• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
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    • 专利摘要:
    The invention relates to a display device comprising an optical display unit (4) designed to display at least one pictogram (19) and a housing frame (2), the optical display unit (4) being elastically mounted on the housing frame (2) and relative to the housing frame (2) is designed so that it can be excited to mechanical vibrations, and the display device has vibration-generating means that are set up to cause mechanical vibrations in the optical display unit (4) on the basis of a control signal (15) for the reproduction of an acoustic signal in a frequency range perceptible to humans to stimulate
    公开号:AT17313U1
    申请号:TGM50075/2021U
    申请日:2021-04-21
    公开日:2021-12-15
    发明作者:
    申请人:Zumtobel Lighting Gmbh At；
    IPC主号:
    专利说明:

    description
    INTELLIGENT ESCAPE ROUTE DISPLAY DEVICE FOR OPTICAL-ACOUSTIC ESCAPE DIRECTION AND GUIDANCE SYSTEM
    The invention relates to the field of routing for people, especially escape routing. A display device for buildings and a corresponding wayfinding system and an arrangement which includes the wayfinding system and a sensor network are proposed.
    Safety lighting with emergency lights allows people to quickly and safely leave a building or an area in an emergency situation, such as a fire, or to visit safe areas of the building.
    In appropriately equipped buildings or areas escape route displays are arranged with pictograms that are intended to cause a spatial escape route guidance when such an emergency situation occurs. Escape route signs should also be visible in the event of a fault in the general electrical lighting of the building and are therefore often designed to be integrated with emergency lights.
    An example of escape route displays are signs with pictograms or special escape route display lights with which people are shown the direction of an escape or rescue route to leave the building or area.
    The pictograms can be applied to signs as static escape route displays.
    Escape route indicator lights may include illuminated pictograms that are activated as active escape route indicators upon the occurrence (detection) of an emergency event.
    [0007] Pictograms as displays are pictorial representations of information showing a stylized, running person and an arrow pointing in the direction of a predetermined escape route. The pictograms can alternatively or additionally include other characters, for example the lettering “EXIT”.
    A problem of these known systems is that people can be guided by the static pictograms in a dangerous situation, for example in a smoky room. Dynamic escape route displays have therefore been developed in which some of the escape route displays are designed as a changeable display. With these changeable displays, an arrow is shown in the direction of the escape and rescue route, with the direction of the arrow being adjustable by appropriate control of the display. Such a dynamic escape route display can be controlled, for example, depending on the data from fire alarms collected in a fire alarm control panel (BMZ) of the building. Such dynamic escape route displays are used within the framework of systems for dynamic or adaptive escape route guidance, as specified in particular in leaflet 33013:2016-05 of the ZVEI Zentralverband der Elektrotechnik- und Elektronikindustrie e. V., Fachverband Sicherheit, May 2016 with the title "Adaptive escape routing: further development of technical building evacuation: from dynamic to adaptive escape routing" (https://www.zvel.org/fileadmin/user__upload/Presse_und_Medien/Publikationen/2016 /mai/Adaptive_Fluchtwegführung_- _ ZVEI leaflet 333013_2016-05/MerkBlatt33013-2016- 05_Adaptive_Fluchtwegführung.pdf).
    However, the known dynamic escape route displays have disadvantages. The effectiveness of such optical escape route signs is based solely on the visual perception of the pictograms shown by people who are in an area around the escape route sign.
    [0010] If there is a lot of smoke inside a building, the range of vision can be limited, especially in the case of people who are above head height and therefore of average height
    Escape route signs possibly mounted in the immediate vicinity of a room ceiling. People with visual impairments, for example blind people, people with age-related visual impairments cannot see the pictograms, or only to a very limited extent, without additional obstruction from smoke.
    [0011] European and national standards stipulate that people with disabilities must not be disadvantaged. Thus, people with sensory limitations, such as visual impairments, need to be improved in their ability to save themselves by using the two-senses principle (2-channel principle). The two senses "seeing" and "hearing" of the three senses "seeing", "hearing" and "touching" are used for the purpose of guiding escape routes. According to the two-senses principle, an alarm can be triggered and escape routes guided by means of optical and acoustic devices. Loudspeakers are known as acoustic alarm devices, which, when an evacuation event occurs, play acoustic signals, for example stored voice files, that the building should be vacated. However, a corresponding additional speaker system that is fully functional for a predefined period of time even if a corresponding event occurs, possibly associated with a failure of the mains power supply, is associated with additional costs.
    In addition to a well-known, acoustic alarm, it is desirable that people with visual impairments are continuously supported, for example by acoustic signals, in the event of an emergency event, in order to be able to leave the building or site as quickly as possible.
    It is therefore an object of the present invention to provide an improved routing system for dynamic and/or adaptive routing which eliminates the above-mentioned disadvantages of the prior art.
    [0014] This object is achieved by a display device having the features of claim 1, a wayfinding system and an arrangement of a wayfinding system and a sensor network according to the independent claims.
    According to a first aspect, the invention relates to a display device comprising an optical display unit and a housing frame. The visual display unit is designed to display a pictogram. The display device is characterized in that the optical display unit is mounted elastically on the housing frame and can be excited to mechanical vibrations relative to the housing frame. Furthermore, the display device according to the invention has a vibration-generating means. The vibration-generating means is designed, on the basis of a control signal, to excite the optical display unit to perform mechanical vibrations for the reproduction of an acoustic signal in a frequency range that can be heard by humans.
    The acoustic signal output is directly integrated in the display device according to the invention. It is particularly advantageous with regard to the structure of the display device to use the optical display unit for the visual display of the pictogram at the same time as an acoustic signal transmitter, in particular as its sound surface. A loudspeaker as an isolated component can thus be dispensed with. Optical and acoustic escape route guidance are also particularly advantageously integrated in a single display device.
    [0017] The display device according to the invention makes it possible to implement a system for dynamic escape route guidance in such a way that a dynamic, optically perceptible emergency exit sign and a dynamic acoustic escape route guidance are provided in combination. Studies show that groups of people without visual limitations can find their way around an unfamiliar building more quickly thanks to supplementary acoustic announcements and can leave the building, in certain cases in 50 to 70% less time.
    The display device according to the invention brings about reduced manufacturing costs for the manufacturer and reduced procurement costs and system costs for the customer. It is a product display device that realizes both functions - visual display and acoustic display
    corresponding information - which means that fewer components need to be procured, assembled and integrated into a system for a wayfinding system with the same functionality.
    The structure of the display device itself is particularly advantageous because the component optical display unit for the provision of two functions - takes over essential tasks - optical display and acoustic display of a corresponding information. The optical display unit is used directly for the visual display of the pictogram, at the same time the function of a loudspeaker membrane is taken over for the acoustic output of the acoustic signal.
    The dependent claims develop the central idea of the invention in an advantageous manner.
    The display device according to one embodiment has a control unit for generating and outputting a control signal to the vibration-generating means of the display device.
    The display device can thus use the optical display unit as a membrane of a sound transducer, which generates an acoustic sound signal in a frequency range perceptible to people from the supplied (electrical) control signal and emits it to the environment. The arrangement of the control unit in the display device simultaneously enables local control and coordinated control of the output of optical and acoustic information at one position.
    According to one embodiment of the display device, the display device comprises storage means set up for storing at least one predefined acoustic signal assigned to the pictogram. The acoustic signal can be stored as a control signal for output to the vibration-generating means. Alternatively or additionally, the display device has an interface designed for reading in the predefined acoustic signal assigned to the pictogram. The control unit of the display device is set up to output the stored and/or read-in predefined acoustic signal to the vibration-generating means as a function of a spatial position of the display device and/or depending on the situation in the control signal, and to visibly display the associated pictogram through the optical display device.
    The display device in a further embodiment comprises the control unit, which is set up to control the vibration-generating means with the control signal at least in a first operating mode for the acoustic reproduction of a speech and/or music signal, and in a second operating mode with the control signal for to control an acoustic output of the acoustic signal assigned to the pictogram and at the same time to bring about a visual output of the pictogram via the visual display unit.
    [0025] According to one embodiment, the display device comprises the control unit set up to activate the vibration-generating means in the first operating mode when the control unit detects operation of the display device in mains operation, ie powered by a mains power supply. The control unit is also designed to control the vibration-generating means in the second operating mode when the control unit detects mains-independent, battery-supported operation of the display device. Battery-supported operation is therefore evaluated as an indication of a failure of the mains power supply and thus also as an indication of the occurrence of an emergency event. Alternatively or additionally, the control unit can be set up to switch between the first operating mode and the second operating mode on the basis of a signal supplied externally to the display device. This can be done, for example, by means of an activation signal fed via a DALI interface to the display device, in particular to its control unit.
    The display device can comprise a magnet and an electromagnet supplied with the control signal as the vibration-generating means.
    [0027] According to one embodiment of the display device, the optical display unit
    a flat display carrier and a lighting means arranged parallel thereto. The lighting means is designed as a light guide, preferably as a light guide plate, and is arranged in front of the display carrier in the viewing direction in order to enable front lighting of the display carrier. The display carrier illuminated by the lighting means shows the pictogram in the viewing direction without the components of the display device causing a disturbing formation of shadows.
    The display device of a further embodiment uses electronic paper as the display technology for the optical display unit in order to display the pictogram in a visible manner. The pictogram preferably represents dynamically and/or adaptively changeable path information and/or direction information.
    The use of electronic paper as the display technology enables the realization of a dynamic display of the icon. Electronic paper, also sometimes referred to with the English translation "E-Paper Display", the terms "E-Ink", "elnk" or "E Ink'M, which are used synonymously, achieve as a display technology for screens that a dynamic display is created, which continues to display a set figure even if one of the power supply fails completely. In particular, electronic paper is an example of a bistable display that requires energy input in the form of an electrical current just to change the display. This is particularly advantageous for battery-backed operation in the event of an emergency event involving failure of a mains power supply.
    [0030] Electronic paper has the further advantage that the display realized in this way shows the essential properties of classic signage. Existing standards and recommendations for the appearance of safety displays can be easily met using this type of display. This also applies in particular to a color display. Due to a small distance between the imaging elements and the surface of the optical display unit, the displayed display content looks the same from a wide viewing angle range and is easily recognizable. The content of the visual display is shown without flickering and is equally recognizable in artificial light, for example in a lit room, or in sunlight. Electronic paper is available in various sizes, thin in thickness and therefore light in weight to manufacture, and can be formed into flexible and rigid designs. due to the low weight and the associated low mass inertia, such a display unit is particularly suitable for the display device according to the invention.
    The display device of a preferred embodiment is designed as an escape route display.
    With its ability to output information both acoustically and visually, the display device is particularly suitable for operation when emergency events occur using the “two-senses principle”. People in stressful situations are reliably provided with essential information via their visual and acoustic senses. An acoustic output by the same device that also represents the visual display has the advantage that people's attention is drawn in the direction of the display. This uses the fact that humans can locate a direction in space to a sound source.
    According to a second aspect, the invention relates to a wayfinding system with at least one display device according to the first aspect of the invention. The at least one display device is distributed in a spatial area and networked by means of a communication network of the wayfinding system. A control device of the wayfinding system is set up to control the at least one display device individually to output a position-related acoustic signal and the correspondingly assigned pictogram.
    The display device according to the invention thus enables the design of a particularly advantageous route guidance system, since the acoustic signals are provided exactly where they are needed in order to implement dynamic acoustic route guidance: at each designated route change. This means that locally relevant, dynamic throughputs can
    Messages such as "go left", "go right" are provided to people where they are most appropriate.
    According to a third aspect, the invention relates to an arrangement comprising the wayfinding system according to the second aspect and a sensor system, wherein the wayfinding system and the sensors of the sensor system are distributed over the spatial area. The control device has an interface that is set up to read in position-related sensor data.
    The arrangement according to one embodiment has a sensor system that has at least one sensor that is embodied as a fire detector, a smoke alarm device, and a motion detector, a presence sensor, a temperature sensor, an imaging sensor, in particular also a camera sensor, a gas sensor, in particular also CO» sensor, or acoustic sensor among its sensors.
    [0037] One embodiment of the arrangement includes the control device, designed with a voice interface to a microphone. The control device is set up to transmit recorded or stored voice signals via the voice interface to the control units of the at least two display devices of the wayfinding system on the basis of at least one piece of position information determined by the sensor system.
    Embodiments of the invention are discussed below with reference to a brief description of the figures. It shows
    [0040] FIG. 1 shows an overview of functional blocks of a preferred embodiment of a display device according to the invention of a wayfinding system,
    [0040] FIG. 2 shows a schematic representation of an embodiment of a display device in an application,
    [0041] FIG. 3 shows a schematic representation of a preferred embodiment of an arrangement of a dynamic/adaptive wayfinding system with a sensor system, and
    [0042] FIG. 4 shows a simple flow chart of the operation of a display device according to the invention in a dual-mode operation,
    A particularly preferred embodiment based on a display device 1 designed as an escape or rescue route sign within a wayfinding system 30 of a spatial area, in particular of a building and its surroundings, is presented below. The wayfinding system 30 can include emergency lighting, safety lighting, escape route lighting and/or escape route signs.
    Figure 1 provides an overview of functional blocks of a display device 1 according to the invention.
    The at least one display device 1 of the wayfinding system can form an escape or rescue route sign. The display device 1 can be arranged on a wall or on a ceiling of the building. The display device 1 comprises a housing frame 2 in and/or on which further assemblies and units of the display device 1 are arranged.
    The display device 1 shown has a suspension device 3 firmly connected to the housing frame 2 . The suspension device 3 shows a flat contact surface for wall mounting of the display device 1. The suspension device 3 can include attachment options for wall mounting or for suspension by means of ropes, chains or the like from a ceiling.
    The acoustic escape route guidance is directly integrated in the display device 1 . The central element of the display device 1 according to the invention is to use an optical display unit 4 itself for generating sound and thus as an acoustic signal generator and sound-generating surface.
    The individual components and assemblies of the display device 1 are arranged within the housing frame 2 . One of these elements is the visual display unit 4. The visual display unit 4 includes a display carrier 5, which has a display surface for displaying the pictogram 19. The display carrier 5 is arranged in the housing frame 2 in such a way that the obligation to display with the pictogram 19 is arranged visible to an observer in at least one viewing direction (front side). The size of the area of the display medium 5 in the viewing direction is preferably predetermined by the size of the pictogram 19 to be displayed.
    [0049] Pictograms 19 come in different sizes, depending on the required detection range. The detection range can usually be calculated by multiplying the height of the pictogram by a factor of 200. For example, the following detection ranges result for standard pictogram sizes:
    (1) for 75 x 150mm the detection distance is 15 meters, (2) for 115 x 230mm the detection distance is 23 meters and (3) for 150 x 300mm the detection distance is 30 meters.
    With a typical pictogram size for a recognition range of 30 m, 450 cm Pictogram surface available as a sound-generating surface for use within the scope of the display device 1 according to the invention.
    The display medium 5 can be designed in particular as a screen using electronic paper display technology. Electronic paper reflects light like paper and thus shows the effect of a passive, i.e. non-luminous, display. The image content, in this case a pictogram 19, can be displayed continuously without a power supply being required to maintain the display. This makes it particularly advantageous to use it for emergency lights. The possibility of electronic paper display technology also enables dynamic change of the display during operation in an emergency situation. The display medium 5 constructed using this display technology can thus in particular implement a dynamic and/or adaptive display of pictograms 19 .
    [0052] A lighting means 6 is arranged in front of the display carrier 5 in a viewing direction. In the exemplary embodiment according to Figure 1, the lighting means 6 comprises a plate-shaped light guide 7 and one or more light-emitting diodes 8 (LEDs) as lighting means for introducing light into the light guide 7.
    Known display devices have lighting means that illuminate a display carrier with the pictogram 19 from behind, ie from the side facing away from a viewer.
    In contrast, the display device 1 according to Figure 1 has front lighting by means of a lighting means 6 arranged in the viewing direction, i.e. on a side of the display carrier 5 facing the viewer with the pictogram 19. The lighting means 6 shown essentially comprises the planar light guide 7 for this purpose The embodiment of the optical display unit 4 shown shows one, alternatively several, LEDs 8 along one side of the essentially rectangular light guide 7. The LEDs 8 are arranged in such a way that the light they emit is coupled into the light guide 7 and in the light guide 7 is guided and spread. The light of the LED 8 thus realizes a front illumination of the display medium 5 with the pictogram 19 shown on it.
    [0055] as is regularly prescribed in particular in the application of an emergency light, a safety light or an escape and rescue route marking. In the display device 1 shown, the elements magnet 12, electromagnet 11 and control gear 13 arranged behind the display carrier 5 to implement the sound transducer (loudspeaker) in the viewing direction cannot influence the light path of the lighting, since the display device 1 implements front lighting using the lighting means 6. A shadow cast by the elements of the sound transducer therefore does not occur. The pictogram 19 shown can
    be illuminated in accordance with the standard.
    The embodiment according to FIG. 1 also arranges a translucent front cover 9 in front of the light guide 7 of the lighting means 6 in the viewing direction.
    The optical display unit 4 thus comprises the display support for the light guide 7, the LED 8 and the front panel 9 as components which are firmly connected to one another.
    Controlled by a control unit 13, components of the optical display unit 4 realize an illuminated optical display for the pictogram 19.
    Alternatively, however, only some of the elements of the display unit 4 could be excited to oscillate.
    The optical display unit 4 is mounted in the housing frame 2 elastically and thus capable of vibrating. This elastic, oscillatable (oscillatable) mounting is effected by the elastic fastening means 10. A membrane or resilient fastening means, for example, can be arranged between the housing frame 2 and the optical display unit 4 as the elastic fastening means 10.
    The electrical control of the oscillatable optical display unit 4 associated LED 7 from the control unit 13 via a flexible electrical connection 17. Since a possible maximum deflection of the optical display unit 4 is low, the flexible electrical connection is by means of a multi-wire, in particular one 2-core flexible cable possible.
    The flexible electrical connection 17 can comprise a first electrical connection 17.1 for supplying the LED 8 with an LED current and a second electrical connection 17.2 for controlling the display carrier 5. The activation of the display medium 17.2 can enable the transmission of image data for the display of the pictogram 19 from the control unit 13. Alternatively or additionally, the display medium 5 can store image data for at least one pictogram 19 .
    The control unit 13 arranged in the housing frame 2 also generates a control signal (electrical control signal 15) for controlling vibration-generating means of the display unit 1. The embodiment according to FIG have permanent magnets 12 firmly connected to the optical display unit 4 . The electromagnet 11 and the permanent magnet 12 are arranged relative to one another in such a way that an attractive and/or repelling force can be generated between the electromagnet 11 and in the permanent magnet 12 by means of the control signal 15 supplied to the electromagnet 11 .
    The formation of the vibration-generating means by means of an electromagnet 11 firmly connected to the housing frame 2 and a permanent magnet 12 firmly connected to the optical display unit 4 represents only one of many possible forms for the vibration-generating means.
    For example, the electromagnet 11 can also be firmly connected to the optical display unit 4 as an immersion magnet and immersed in a correspondingly shaped permanent magnet 11 arranged in a more rigid connection with the housing frame 2 .
    Alternatively, other fundamentally known technical solutions from the field of sound transducers can also be used as vibration-generating means. In this way, the drive of the loudspeaker can be implemented by means of vibration-generating means using piezoelectric or electrostatic effects.
    The components of the display device 1 according to the invention realize the essential properties of a sound transducer. The sound transducer is designed as a loudspeaker for generating sound for the reproduction of speech and/or music in a human-audible frequency range from 20 Hz to 20 kHz: the optical display unit 4 fulfills the function of the loudspeaker membrane, the vibration-generating means the
    Function of the drive unit of the loudspeaker and the elastic fastening means 9 the function of the connecting elements with respect to the loudspeaker membrane and loudspeaker housing. In the case illustrated in FIG. 1, the optical display unit 4 is set in motion by means of the control signal 15 to the vibration-generating means. The optical display unit 4 thus moves in a piston-like manner in relation to the housing frame 2 as a function of a frequency of the control signal 15.
    The technical parameters of the vibration-generating means, for example a diameter and a winding height of a coil realizing the electromagnet 11, as well as the strength and range of a magnetic field of the permanent magnet 12 are to be dimensioned according to the desired performance parameters of the loudspeaker realized by the display device 1 according to the invention.
    The control unit 13 of the display device 1 generates the signal for activating the lighting means, in Figure 1 the LED 87, and the control signal 15 for activating the vibration-generating means, in the exemplary embodiment shown the electromagnet 11. The control unit 13 thus controls both the visual display of the pictogram 19 by the lighting means 6, and an acoustic output of information associated with the pictogram 19 via the control signal 15.
    In one exemplary embodiment, the control unit 13 has a memory unit 13.1. The storage unit 13.1 can store one or more pictograms 19 each in the form of image data, as well as acoustic output data, in particular voice data.
    In particular, the storage unit 13.1 can store pictograms 19 assigned to corresponding acoustic output data.
    The memory unit 13.1 preferably stores one or more pictograms 19, one or more corresponding acoustic output files being associated with each pictogram 19 stored as an image file.
    Particularly preferably, the memory unit 13.1 stores at least one pictogram 19 with route information and/or direction information as image data for the visual display, as well as the corresponding route information and/or direction information assigned to this pictogram 19 in the form of a voice file for an acoustic output of the Path information and/or direction information.
    The control unit 13 can also have an interface 13.2. The interface 13.2 provides a network connection for the control unit 13 and thus also for the components of the display device 1 that are controlled and supplied by it. For this purpose, the interface 13.2 has connection means for the mains power supply 14.
    The display device 1 can be designed for operation in an emergency lighting system as a single battery system or a central battery system. In the case of operation in an individual battery system, the display device 1 can have an electrical energy store 16 .
    The control unit 13 can, starting from the mains power supply 14, charge the electrical energy store 16, for example a chargeable battery (accumulator). The electrical energy store 16 can ensure the operation of the display device 1 for a predetermined period of time if the mains power supply 14 fails.
    The control unit 13 in the embodiment of the display device 1 shown in FIG. 1 also has the functionalities of an emergency lighting operating device. In particular, this can also include the charging and monitoring of the electrical energy store 16 . Furthermore, the control unit 13 can ensure the activation of the lighting means, the LED 8 is shown here, with a suitable LED current.
    The control unit 13 can in particular also have monitoring means that detect a failure of the mains power supply 14 (alternating current), and when a failure of the mains power supply 14 is detected, a supply of the display device 1 from the electrical
    Switch energy store 16 (direct current). At the same time, if the mains power supply 14 fails, the control unit 13 can change an operating mode of the display device 1 .
    In particular, when a failure of the mains power supply 14 is detected, the control unit 13 can control the optical output of a predetermined pictogram 19 and the acoustic output of an acoustic output file assigned to the predetermined pictogram 19 as an acoustic signal.
    Furthermore, if a failure of the mains power supply 14 is detected, the control unit 13 can control an emergency lighting function using the lighting means of the display device 1 for a defined period of time and fed from the electrical energy store 16 .
    [0081] Furthermore, the interface 13.2 can have connection means to a communication network 18. An activation signal can be supplied to the display device 1 , in particular the control unit 13 , via the communication network 18 . The activation signal can trigger an optical output of the pictogram 19 and a simultaneous acoustic output of an associated voice file.
    A dynamic and/or adaptive control of the acoustic and visual output of the pictogram 19 can take place via the interface 13.2 to the communication network 18 .
    The interface 13.2 to the communication network 18 can be used to integrate the display device 1 into a wayfinding system.
    The interface 13.2 can be wireless and/or wired. The interface 13.2 can support communication according to one or more communication standards, in particular lighting standards, for example DALI.
    [0085] In particular, commissioning and configuration of the display device 1 can also be carried out via the interface 13.2. Likewise, a change and/or new storage of pictograms 19 and acoustic output files in the storage unit 12.1 can be made possible via the interface 13.2.
    The display device 1 according to FIG. 1 therefore shows all the advantageous properties of the invention. With the display device 1 for dynamically changeable pictograms 19, a customer can also use the means for an acoustic output of the information shown visually with the pictogram 19 in a particularly compact design.
    [0087] This makes it possible, for example, to provide direct acoustic guidance in addition to visual escape route guidance.
    The display device 1 has further, particularly advantageous properties at the higher level of a signage system implemented therewith, as will be shown below with reference to FIG.
    Figure 2 first shows a schematic representation of an embodiment of a display device 1 in an application, here as an escape and rescue route sign of a wayfinding system 30.
    In the case shown in the drawing, an event has occurred and been recognized that triggers an evacuation event for a building. The control unit 13 of the display device 1 can receive this signaled with a corresponding activation signal via the interface 13.2, in particular to a communication network 18 and a fire alarm control panel BMZ of the building connected to the communication network. In addition, the received activation signal can include further activation data based on the present evacuation event.
    The further activation data can contain, for example, image data for optical information to be output by the display device 1 . Alternatively, the received activation data can have a memory address for locally in the memory unit 13.1 of the display device
    Device 1 include stored image data for a pictogram.
    The activation data can also contain voice data for an acoustic signal to be output by the display device 1. Alternatively, the received activation data can include a memory address for voice data stored locally in the memory unit 13.1 of the display device 1 for an acoustic output.
    In the case shown in FIG. 2, the display device 1 uses the optical display unit 4 to show a pictogram 19 on the display medium 5 with a running person and symbolized clouds of smoke. The pictogram shown also includes a directional arrow pointing to the right shown above the running person.
    In addition, the control unit 13 of the display device 1 generates a control signal for driving the vibration generating means. In particular, the means for generating oscillations generates an acoustic signal 20 by means of an oscillation of the optical display unit 4 excited on the basis of the control signal. The acoustic signal 20 shown provides the information “Please go to the right. The room behind the left door is smoky.” again. it can be provided that this acoustic output is repeated at regular intervals until the end of the emergency situation is recognized. This can be linked to the duration of the display of the pictogram 19 .
    FIG. 3 shows a simplified block diagram of a preferred embodiment of a dynamic/adaptive wayfinding system 30 . The dynamic/adaptive wayfinding system 30 is arranged together with a fire alarm system 40 . The arrangement shown comprising the dynamic/adaptive guidance system 30 and the fire alarm system 40 also has a control device 37 .
    The control device 37 can be spatially arranged in a fire alarm control panel BMZ of the fire alarm system 40 .
    The dynamic/adaptive wayfinding system 30 can be, for example, an emergency lighting system of a building.
    The fire alarm system 40 in Figure 3 includes five sensors 41, 42, 43, 44 and 45. Shown are a smoke detector 41, a CO2 sensor 42 as an example of a gas sensor, a PIR sensor 43, a camera 44 and a acoustic sensor (microphone) 45. The sensors 41 to 45 are connected via communication network 47 to a fire alarm control panel BMZ. A central control device 46 of the fire alarm system is arranged in the fire alarm control panel BMZ.
    The central control device 46 collects the information from the individual sensors 41 to 45 via the communication network 47. From the information collected from the sensors 41 to 45, the central control device 46 determines a location-related, position-resolved situation image for the area monitored by the sensors 41 to 45 (Building). The location-related or position-resolved situation image can include, for example, the report of an assumed fire event (location) in a specific room of the building, ie location-related or position-resolved based on a report from the fire detector 41 located in this room.
    The structure and function of a fire alarm panel BMZ are known per se. The fire alarm control panel BMZ in FIG. 3 also includes the control device 37. The control device 37 can be implemented as a logic unit in hardware or as software. In particular, the central control device 46 of the fire alarm system 40, the control device 37 and an emergency light control unit 36 of the emergency light system/route guidance system 30 can be implemented as software modules on a shared piece of hardware.
    In the exemplary embodiment according to FIG. 3, the emergency light control unit 36 controls a wayfinding system 30. The emergency light control unit 36 can include a logic unit, in particular in the form of software, which is designed to control the display devices 31, 32, 33, 34 and 35 depending on the situation .
    The emergency light control unit 36 is formed, the display device 31 to 35 first
    controlled according to a defined behavior, for example based on a table. When the wayfinding system 30 is used as an emergency lighting system, the dynamic and/or adaptive wayfinding system 30 is designed to direct people to predefined alternative or escape routes in the event of a fire. According to a particular embodiment, the dynamic and/or adaptive wayfinding system 30 is a self-learning system. In particular, the wayfinding system 30 is designed as a self-learning system to continuously record and store the behavior of people caused by the system, for example the predefined escape routes and the behavior of people on these escape routes.
    For example, when an emergency event occurs, presence sensors or cameras can be used to record how and where these people move within the area monitored by the sensors 41 to 45 (person tracking). The control device 37 can learn, in particular from a combination of the information collected by the fire alarm system 40 and the emergency light control unit 36, that too many people are being directed onto an escape route, this escape route is consequently overloaded and the risk of mass panic increases. In the case of a subsequent evacuation event, the routing system 37 can then divide the flow of people into two or more escape routes. In this way, dynamic escape route guidance, which is also adaptive when the escape routes are adapted during an ongoing emergency event, is made possible by the route guidance system 30 .
    Presence sensors or cameras used for this purpose can be integrated in the display devices 31 to 35 or arranged separately.
    [00105] The wayfinding system 30 can also be designed to direct the flow of people through the area with the aim of avoiding congestion.
    The wayfinding system 30 can therefore, apart from being used as an emergency lighting system, take over guiding people through museums, directing people to specific goods in a shop or directing vehicles to free parking spaces in a multi-storey car park or in a city.
    The design of the display devices 31 to 35 as display devices 1 according to the invention within the framework of the dynamic and/or adaptive wayfinding system 30 enables location-based acoustic signals, in particular path and direction information in an emergency mode, or general acoustic playback, for example speech or music playback in a general playback mode.
    By means of the display devices 1, additional acoustic signals for people with visual impairments are generated, for example, which supplement the known, purely visual display of path and direction information by means of pictograms 19. In this way, a wayfinding system based on the two-senses principle is implemented via the relevant area of the building.
    The sensors 41 to 45 of the fire alarm system 40 can, in addition to the permanently installed sensors shown, also include mobile devices, in particular mobile phones or mobile computers, for example tablet computers or smartphones. The mobile devices can be connected to the control device 37 via a communication network, for example a wireless local area network (WLAN) or a cellular mobile radio network, and can transmit position data to the control device 37, for example. Based on the transmitted position data of the mobile devices, the control device 37 can identify where people are in the building. The control device 37 logically links the information collected from the sensors 41 to 45, the mobile devices and the display devices 31 to 35, in particular the spatial positions of the display devices 31 to 35. Based on the information collected, the control device determines 37 specifications (instructions), which pictograms 19 and which acoustic signals, in particular voice output, should be provided by which display device 31 to 35. The control device 37 transmits the corresponding instructions to the emergency lighting control unit 36. The emergency lighting control unit 36 then forwards the instructions accordingly for a situation- and position-related optical output and an acoustic output of information through the respective display devices 31 to 35.
    In further embodiments, the wayfinding system 30 is designed for navigation, in particular for so-called indoor navigation within buildings.
    For example, the wayfinding system 30 forms an interactive video guide for a museum or for a city. A visitor can activate a display device 31 to 35 using an app on a mobile device and this then shows him information or videos about the environment. For this purpose, the display devices 31 to 35 can be located, for example, on exhibits in the museum or on historical buildings. A parallel installation of optical screens and acoustic reproduction devices with loudspeakers is avoided by using display devices 1 according to the invention.
    In another application example, the dynamic and/or adaptive routing system 30 can be used to find the way in a shop. The wayfinding system 30 can be designed to guide a person with the display devices 31 to 35 in the shop to specific goods. Additional display devices 31 to 35 can be located on special goods, which, after activation via an app, display additional information about these goods, e.g. about the production of the goods. The control device 37 can use the mobile device assigned to the customer to identify the customer and then send individualized information for a visual display and an acoustic output, for example special customer offers, to a single display device of the plurality of display devices 31 to 35 according to the situation. and transmit position-related.
    In an application example, the dynamic and/or adaptive wayfinding system 30 is implemented in an office building and, based on sensor data, detects whether a workplace or a meeting room is occupied, and a person can use the display devices 31 to 35 to go to a free workplace or direct available meeting room.
    In a further application example, the wayfinding system 30 is installed in a hospital building or the building of a care facility in order to guide people, for example doctors or visitors, to a patient.
    In an example application, the wayfinding system 30 is implemented in a care facility. If, for example, an emergency button is pressed in a care facility, information to calm the patient can be displayed on a display device 31 to 35 in the room, e.g. "Help is on the way", or a direct connection can be made via video chat with a caregiver. In this case, the display device 31 to 35 of the emergency lighting system assumes the function of a loudspeaker,
    In addition, the display device 31 to 35 can be equipped with a microphone. In this case, the display device 31 to 35 can handle the entire bidirectional communication between the immediate spatial area of the display device 31 to 35 and a remote station, for example the control device 37, via its correspondingly designed control unit 13 with the interface 13.2. For example, in the event that a person has suffered a cardiac arrest, a first responder on site in the area of a display device 31 to 35 can receive support during resuscitation from a specialist contact person (doctor, paramedic) via the display device 31 to 35 according to the invention.
    In an application example, the wayfinding system 30 is installed distributed over the building in connection with a sensor system with optical sensors (camera 44). The cameras 44 are also powered in the event of an emergency. The camera 44 transmits position-resolved information about the presence of a person in the building to the control device 37, in particular to an interface 37.1 of the control device 37 to the sensor system. Via a suitable interface of the control device 37, for example, rescue workers can give a person direct acoustic instructions, for example “Please keep calm and stay in the room. Rescue workers with breathing apparatus are on their way to you". In addition to a corresponding signal interface for recording speech using
    a microphone, the wayfinding system 30 is to be designed for this application with a corresponding transmission option for voice data (acoustic data) up to individually addressable display devices 1, 31 to 35 via the communication network 38.
    The transmission possibilities mentioned via the communication network 38 also enable the operation of the individual display devices 31 to 35 as acoustic playback devices (loudspeakers) in individual rooms or room groups or the entire building in an operating mode independent of an emergency event.
    In an alternative embodiment, the routing system 30 is designed with display devices 31 to 35 for displaying timetables, for example at train stations, airports or bus stops. People can call up additional, updated timetable information for acoustic playback and visual display on the display devices 31 to 35 via an associated app.
    Due to the reduced number of display devices 31 to 35 to be procured, installed and integrated into a system, the overall system is correspondingly favorable in terms of procurement and installation effort, and thus in terms of the costs incurred. This applies in particular when comparing the wayfinding system 30 with a known wayfinding system combined with a separate communication system with loudspeakers, which shows a comparable functionality with optical and acoustic wayfinding.
    FIG. 4 shows a simple flow chart for the operation of a display device 1 according to the invention. In particular, the two basic operating modes of an embodiment of the display device 1 are clear from FIG.
    In step S1, the display device 1 is in a first operating mode for the acoustic reproduction of a speech and/or music signal. The control unit 13 generates the control signal 15 and outputs the generated control signal 15 to the means for generating oscillations. For this purpose, separate amplification means can also be arranged in the signal path in order to adapt the power of the signal to the power requirement for the acoustic output.
    The generated control signal 15 can be an electrical signal modulated with a speech signal or a music signal. In one embodiment, the generated control signal 15 is an electrical current modulated with the speech or music signal, with which the control unit 13 feeds the electromagnet 11 .
    In step S1, the display device 1 works exclusively as a loudspeaker for the acoustic reproduction of music, speech or other noises as an acoustic signal through the display device 1.
    In step S2, the control unit 13 checks whether an evacuation event (emergency event) is present.
    Step S2 can be executed in parallel to step S1. Alternatively, step S2 can be carried out at regular or irregular time intervals in parallel with step S1.
    For example, the control unit 13 can check whether the display device 1 is powered by the mains power supply 14 in mains operation, or whether the mains power supply 14 has failed and the display device 1 is battery-supported and therefore mains-independent. If mains-independent, battery-supported operation of the display device 1 is present, then the control unit 13 decides that the building needs to be cleared and that an evacuation event is therefore present.
    Alternatively or additionally, the control unit 13 can be set up to switch from the first operating mode to the second operating mode on the basis of an activation signal supplied externally to the display device 1 .
    If the control device 13 decides in step S2 that an evacuation event has occurred, the control device 13 can determine the specific evacuation event in step S3. For the application of dynamic routing, this can be, for example
    indicate to determine whether the display device 1 for the present evacuation event should display a specific pictogram 19 and output a specific acoustic signal associated with the pictogram 19 . The control device 13 now continues with step S4 and with the action of the display device 1 defined for the specific evacuation event.
    In step S4, which follows step S3, the control unit 13 first initiates a change of the display device 1 from the first operating mode to the second operating mode.
    The change from the first operating mode to the second operating mode of an optical routing takes place in step S4. For this change to the second operating mode, the control unit 13 can in particular read in image data for the display of a specific pictogram 19 from the memory unit 13.1. Furthermore, the control unit 13 can read in stored acoustic data corresponding to the specific pictogram 19 for the acoustic reproduction by the display device 1 .
    In step S5, the control unit 13 generates the control signal 15 on the basis of the acoustic data read in and outputs this control signal to the vibration-generating means. In step S5, the display device 1 now works in the second operating mode, in which the acoustic output of the acoustic signal 20 assigned to the pictogram 19 takes place simultaneously with the optical output of the pictogram 19 in accordance with the image data read on the display medium 5 by means of corresponding vibration excitation of the optical display unit 4.
    [00133] The display device 1 according to the invention thus implements a “dual mode” operation. In addition to the operation as a visual and at the same time acoustic escape route display in the second operating mode, the display device 1 can also be used as a purely acoustic reproduction means in one of the operating modes.
    The control device 37 can have an interface 37.2 via which data for the acoustic output, in particular music data and/or voice data, can be read. The read-in data can be processed in the control device 37 . The processed data can be forwarded via the communication network 38 to the individual display devices 31 to 35 for the acoustic output. This means that the separate and additional construction of a network for additional loudspeakers for the output of acoustic signals is just as unnecessary as additional loudspeakers for the display devices 31 to 35.
    The first operating mode enables the creation of a distributed loudspeaker system, which is made possible with minimal additional effort in the area of the emergency light control unit 36 and the control device 37 by means of the display devices 1, 31 to 35 according to the invention. Since escape route lights are located at each exit door (escape route) around the room in a hall-like room, the room can be exposed to sound from different sides. An effect comparable to "Dolby Surround" can thus be achieved by including the display device according to the invention in a system for sound reinforcement of the room. The technical complexity and thus the combined costs for an escape route identification and guidance and a sound reinforcement of the room are thus advantageously reduced by means of the display device 1 according to the invention.
    权利要求:
    Claims (10)
    [1]
    1. Display device comprising an optical display unit (4) designed to display at least one pictogram (19) and a housing frame (2), and characterized in that the optical display unit (4) is elastically mounted on the housing frame (2) and relative to the housing frame (2) is designed such that it can be excited to mechanical vibrations, and the display device has vibration-generating means which are set up, on the basis of a control signal (15), to cause the optical display unit (4) to mechanically vibrate for the reproduction of an acoustic signal in a human-readable format to excite the perceptible frequency range, and the display device comprises a control unit (13) for generating and outputting the control signal (15) to the vibration-generating means of the display device.
    [2]
    2. The display device according to claim 1, characterized in that the display device has memory means (13.1) set up for storing at least one predefined acoustic signal assigned to the pictogram (19), and/or an interface (13.2) designed to read in the predefined acoustic signal to the pictogram (19), and the control unit (13) is set up to output the stored and/or read-in predefined acoustic signal as a function of a spatial position of the display device and/or as a function of the situation in the control signal (15) to the vibration-generating means, and displaying the associated icon (19) through the visual display device.
    [3]
    3. Display device according to one of Claims 1 or 2, characterized in that the control unit (13) is set up to control the vibration-generating means with the control signal (15) in a first operating mode for the acoustic reproduction of a speech and/or music signal, and in a second operating mode simultaneously with optical output of the pictogram (19) and acoustic output of the pictogram (19) associated with the acoustic signal.
    [4]
    4. Display device according to Claim 3, characterized in that the control unit (13) is set up to activate the vibration-generating means in the first operating mode when the control unit (13) detects operation of the display device in mains operation, and the vibration-generating means in the second to control the operating mode when the control unit (13) detects mains-independent, battery-supported operation of the display device, and/or the control unit (13) is set up to switch between the first operating mode and the second operating mode on the basis of a signal supplied externally to the display device.
    [5]
    5. Display device according to one of Claims 1 to 4, characterized in that the vibration-generating means comprises a magnet (12) and an electromagnet (11) fed with the control signal (15).
    [6]
    6. Display device according to one of Claims 1 to 5, characterized in that the optical display unit comprises a flat display carrier (4) and a lighting means (6) arranged parallel thereto, and the lighting means (6) as a light guide (7), in particular as a Light guide plate formed
    and is arranged in front of the display support (4) in the viewing direction in order to provide front lighting of the display support (4), and
    the display carrier (4) illuminated by the lighting means (6) displays the pictogram (19) in the viewing direction.
    [7]
    7. Display device according to one of claims 1 to 6, characterized in that the visual display unit (4) uses electronic paper as the display technology for the pictogram (19) and/or the display device is designed as an escape route display.
    [8]
    8. Wayfinding system with at least one display device (1, 31, 32, 33, 34, 35) according to one of claims 1 to 7, characterized in that the wayfinding system has a communication network (38) for networking the at least one display device (1, 31, 32, 33, 34, 35) and a control device (36), and the control device (36) of the wayfinding system is set up to have at least one display device (1, 31, 32, 33, 34, 35) individually for outputting a position-related acoustic signal and a pictogram (19) assigned to the position-related acoustic signal.
    [9]
    9. Arrangement comprising the wayfinding system (30) according to claim 8, and a sensor system (40), characterized in that the wayfinding system (30) and sensors (41, 42, 43, 44, 45) of the sensor system (40) via a spatial Area are arranged distributed, and the control device (36, 37) has an interface set up for reading in position-related sensor data.
    [10]
    10. Arrangement according to claim 9, characterized in that the control device (36) has a signal interface (37.2) to a microphone, and the control device (36, 37) is set up to transmit recorded or stored voice signals to the control unit via the signal interface (37.2). (13) of the at least one display device (1, 31, 32, 33, 34, 35) of the wayfinding system (30) on the basis of position information determined by the sensor system (40).
    4 sheets of drawings
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE202020103910.5U|DE202020103910U1|2020-07-07|2020-07-07|Intelligent escape route display device for optical-acoustic escape route guidance, as well as a wayfinding system|
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