• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a presence detection apparatus comprising means (3) for storing noises, each stored sound being associated with a control command; Means (1A, 1B, 1C) for detecting acoustic signals; Means (2) for detecting a sound in a detected acoustic signal; Means (2) for comparing the detected noise with the stored sounds; and means (4) for outputting the control command associated with the detected noise.
    公开号:AT15321U1
    申请号:TGM97/2015U
    申请日:2015-04-20
    公开日:2017-06-15
    发明作者:Kistler Roger
    申请人:Tridonic Gmbh & Co Kg；
    IPC主号:
    专利说明:

    description
    PRESENCE DETECTION BY SOUND
    The present invention relates to an apparatus and a method for presence detection preferably in closed spaces. In particular, the invention relates to the presence detection of persons.
    Sensors for presence detection are often used in lighting technology to automatically switch the lighting depending on the presence or absence of people. Such sensors mainly use passive infrared (PIR) or radar technology for person detection.
    PIR technology requires a lens to realize a practical detection range. In particular, this lens is visually an ugliness in the design of lights, as this requires a certain size for the correct functionality. In addition, PIR elements are relatively expensive and the PIR technology relies on a certain temperature of the object to be detected.
    The radar technology, however, requires a by the antenna and the transmitting and receiving electronics (RF electronics) conditional size. The emission of radar beams dislikes many people.
    Both technologies have a limited detection range, which depends on the environment of the sensor. Objects in the detection area can cover the object to be detected, so that the light does not turn on or too late. Turning on especially in the outdoor area can also be triggered by animals, which is usually undesirable.
    The invention has for its object to provide devices and methods that reduce the problems described. In particular, the object is to provide a device and a method for presence detection which permit accurate and early detection and a configuration which can be integrated well.
    This object is solved according to the features of the independent claims. The invention is further developed by the features of the dependent claims.
    According to the present invention, the presence detection apparatus comprises means for storing noises, each control signal assigned to each stored sound, means for detecting acoustic signals, means for detecting a sound in a detected acoustic signal, means for comparing the detected sound with the stored sounds and means for outputting the control command associated with the detected noise.
    With the present invention, it is possible to realize systems or supporting systems for the sensor of a lighting control and home automation in a small space, energy efficient and with a large detection area. Not only people can be recognized directly, but also sounds that are triggered by the activities of persons or objects. For example, the sound may be detected by the unlocking of a door, with which the lighting or other devices can be activated even before a person enters a room and not after the person has already entered the room, as is the case with conventional sensors , This early detection provides additional security.
    With the present invention also persons and events can be detected, which are not in the optical field of view of the sensor or the device. The sensor can hear "around the corner." Noise from activities of persons and animals or sounds from other objects (e.g., machines) can be distinguished so that only one output of the control command can be made in the presence of persons or certain objects.
    There are less complex electronic components needed. Since it is a passive system that does not emit radiation, very little energy is needed to operate and the acceptance of the radar beams against critically adjusted humans is given.
    The sounds and their associated control commands may be pre-set, e.g. from the manufacturer in which storage means are stored and / or means for inputting and storing noises and their associated control commands to the user, e.g. an interface, be provided.
    The device may additionally or alternatively be adapted to learn independently, which events or its sounds is to be assigned a specific control command. For this purpose, the device comprises means for receiving a control command, wherein the detection means is adapted to detect a noise in an acoustic signal, which was detected during the received control command or within a certain period before and / or after the received control command, and the storage means is configured to store the detected noise in connection with the received control command.
    A control command, such as a lighting start-up command, several different sounds can be assigned to enable a safe turn-on or turn-on on various events.
    The device may comprise means for detecting a position and / or a direction of the noise with respect to the device, wherein the means for noise comparison or the output means is adapted to perform the noise comparison only or to issue the control command only when the noise from a specific position and / or direction. As a result, a higher accuracy in the detection of events can be achieved. In particular, when events from different positions / directions cause similar noises, but only a portion of these events are intended to trigger the dispensing of a control command, the additional discrimination in position and / or direction will result in greater accuracy. Additionally or alternatively, similar commands from different positions and / or directions can be assigned different control commands.
    According to the present invention, a luminaire has one of the above-described presence detection devices, wherein a control command may be a turn-on command, a turn-off command, or a dimming command.
    According to the present invention, a presence detection method comprises the steps of: detecting an acoustic signal; Detecting a noise in the detected acoustic signal; Comparing the detected noise with stored sounds, each stored noise being associated with a control command; and outputting the control command associated with the detected noise.
    A single control command can be assigned several different sounds. Thus it can also be provided to trigger a control command only when several different sounds occur in combination, e.g. Steps and pressing a door handle to turn on the room lighting.
    The method may additionally include the steps of receiving a control command; and storing a sound detected in an acoustic signal that has been detected during or within a certain period of time before and / or after the received control command, in conjunction with the received control command.
    The method may additionally or alternatively comprise the step detecting the position and / or the direction of the noise, wherein the noise comparison is performed only or the control command is issued only when the noise from a certain position and / or direction was recorded.
    The invention will be explained in more detail with reference to the accompanying drawings. 1 schematically shows the structure of a luminaire according to an embodiment according to the present invention, and [0023] FIG. 2 shows in a flow chart the method for detecting presence after a first embodiment
    Embodiment according to the present invention.
    Fig. 1 shows a provided with a device S for presence detection lamp according to an embodiment of the present invention. The luminaire shown in FIG. 1 has the dashed line presence detection apparatus S, which includes three microphones 1A, 1B, 1C for detecting noise, a control circuit 2, a memory device 3, and an interface 4 for inputting and outputting control commands , and has a light source 5 and a twilight sensor 6.
    The light source 5 may comprise a light emitting diode (LED) or multiple LEDs. The LEDs may be inorganic or organic LEDs. The multiple LEDs can be connected in series or in parallel. The plurality of LEDs can also be interconnected in more complex arrangements, for example in a plurality of series circuits connected in parallel with one another. The luminous means 5 can have a circuit for operating the LEDs.
    The microphones 1A, 1B, 1C are advantageously arranged at different positions of the lamp. While three microphones 1 A, 1 B, 1 C are shown by way of example, the luminaire may also have only one microphone, two microphones or more than three microphones.
    The memory device 3 may be a removable memory, such as a memory card, or could be integrated into the control circuit 2. In the memory device 3, waveforms of various sounds to be detected and / or the characteristic data describing / characterizing each sound to be detected, such as intensity, duration and frequency spectrum, may be stored. These stored data represent various noises for presence detection. At least one control command is associated with the several different stored sounds. The control command (s) may be stored in the memory device 3 for readout by the control circuit 2. The control commands associated with the various noises may include a switch-on command for the lighting means 5, a switch-off command and / or a dimming command for the lighting means 5.
    The various commands associated with the various control commands may also include a configuration command, so that, for example, by noises of a particular object of the operating mode of the lamp can be changed.
    Alternatively, particularly when only a single control command such as a power-on command is to be issued, the power-on command for the lighting device 5 is output from the control circuit 2 upon occurrence / detection of a noise similar to a stored sound. The switching off of the light source 5 can be triggered by the control circuit 2 even after the expiry of a certain duty cycle.
    The control circuit 2 may be a semiconductor integrated circuit or comprise a semiconductor integrated circuit. The control circuit 4 may be configured as a processor, a microprocessor, a controller, a microcontroller or an application specific integrated circuit (ASIC) or a combination of said units.
    The sound waves (acoustic signal) detected by at least one of the microphones 1A, 1B, 1C are converted into an electrical signal and supplied to the control circuit 2. The control circuit 2 detects a noise in the electrical signal and compares this noise and / or its determined characteristic data with the sounds stored in the memory device 3 or the stored characteristic data.
    In noise detection, various frequencies within a spectrum of the sound without a particular frequency ratio can be isolated and compared with the reference patterns of the sounds stored in the memory device 3. Alternatively or additionally, the signal curve of the sound detected by the microphones 1A, 1B, 1C can be correlated with the stored signal waveforms. When a coincidence or a certain degree of similarity of the waveform and / or the characteristics of the noise detected by the microphones 1A, 1B, 1C with a waveform and / or the stored noise characteristic is detected, the control circuit 2 gives the control command (enable command) via the interface 4 or determines the control command (switching on, dimming or switching off the light source 5) by reading the control command associated with the stored noise from the memory device 3.
    The degree of similarity to be used for evaluation of the noise coincidence may depend on the characteristic of the stored sound and / or the control command, and may be stored in the memory device 3 or detected by the control circuit 2. When a similarity of the waveform and / or the characteristics of the multi-waveform noise detected by the microphones 1A, 1B, 1C and / or characteristics of the stored sounds is detected, the control circuit 2 can increase the similarity degree to be used or the stored noise having the highest coincidence -measure / similarity choose. If no similarity of the waveform and / or the characteristics of the detected by the microphones 1A, 1B, 1C noise with the waveforms and / or the characteristics of the stored noise to determine no control command is issued.
    In a specific embodiment, for example, after a predetermined time, a switch-off can be issued.
    The output of the control command may depend on the transmitted from the twilight sensor 6 to the control circuit 2 via the interface 4 brightness signal. The control circuit 2 could suppress the output of a switch-on command despite positive noise detection above a certain brightness or output a dimming command for operation of the light-emitting means 5 with reduced brightness instead of a switch-on command of the light source 5 with maximum brightness.
    The device S shown in FIG. 1 can be designed as an independent device for presence detection, with which one or more remote devices can be controlled or regulated via the interface 4 by means of the control commands. The interface 4 can for this purpose have a plurality of outputs for connecting devices, each Ausgangsanschuss a particular device, a specific control command or a specific acoustic event is assignable, so that different devices can be controlled by means of different sounds. The devices and devices to be controlled are not limited to luminaires and may, for example, also include door openers, fans, heaters or alarm systems.
    As described above, the presence detection according to the present invention is already possible with one of the three microphones 1 A, 1B, 1C. If the presence detection apparatus S has more than one microphone 1A, 1B, 1C, the control circuit 2 can determine the position or direction of the detected noise with respect to the luminaire by running time differences of the sound detected by the microphones 1A, 1B, 1C and the known positions of the microphones 1A, 1B, 1C to each other.
    The determined position and / or direction can be used to increase the accuracy of the detection of control commands triggering acoustic events. If an acoustic event to be detected can only start from one position and / or be received from one direction, such as the sound of a particular door opening or opening, that sound may be from a similar sound (unlocking or opening another door). be distinguished by means of the position and / or direction determination. In addition, it is possible to send control commands only to those lights or devices which are located in the vicinity of the determined position and / or in the direction of the determined position.
    Alternatively or additionally, the temporal evolution of a sound, a change of position and / or a change in the direction of a sound can be detected and the output of a control command can be made dependent on the detected change. For example, turning on or off a light could be made dependent on whether a detected person or the noise caused by the person is moving towards or away from the light (or other object).
    By detecting the change of the position of a sound such as a sound of steps of a bound person, for example, the lighting may be turned on entering a corridor and turned off again after passing through the corridor.
    According to an embodiment of the present invention, in addition to the noise detected by the microphones 1A, 1B, 1C, the delivery of control commands is itself also dependent on the position and / or direction of the detected sound and / or a change in position and / or Direction of a sound dependent. In the memory device 3, a control command can be assigned to each stored position and / or directions of a sound to be detected and / or each change in position and / or direction of a sound to be detected.
    The sounds, positions, position changes, directions, direction changes and their associated control commands may be pre-determined, e.g. from the manufacturer, are stored in the memory device 3 and / or can be stored by the user in the memory device 3 by means of the interface 4 in the memory device 3.
    The device S may additionally or alternatively be designed to learn independently, which events or their sounds is to be assigned to a specific control command. For this purpose, the device S can be set by the user, for example after installation of the device, in a programming mode storing the noises, positions, position changes, directions, direction changes and their associated control commands in the memory device 3. The device S could comprise a switch (not shown) by means of which the programming mode can be switched on and off. The switch can also be remote controlled. Alternatively, the programming mode may be permanently activated or automatically activated for a certain period of time after installation of the device S.
    In the programming mode, the control circuit 2 combines detected sounds with received control commands that are in temporal relation to the detected sounds. For this purpose, acoustic signals from at least one of the microphones 1A, 1B, 1C are detected and continuously recorded, wherein the oldest recorded signal portions of the detected signal can be continuously overwritten with the most recent signal portions to store only the detected signal of a limited past period.
    When a control command is received, for example, for turning on or off a light, the control circuit 2 searches for a noise in the stored acoustic signal which is detected during the received control command or within a certain period of time before and / or after the received control command was and stores a successfully detected and analyzed noise in connection with the received control command in the memory device 3. The control command may be the manual switching on / off of the light. After linking this control command, then, e.g. automatically turn on the light as soon as the associated noise is identified.
    The stored noise and the received control command associated with this noise can be used immediately in the presence detection or only after the completion of the programming mode. However, release of the use for the presence detection can also take place only if this combination of noise and control command has been repeatedly detected, i.e., the control circuit 2 must have repeatedly assigned the same noise to the same control command received at different times. The number of retries for the release may preferably be specified by the user or depend on the nature of the control command. Similarly, positions, changes in position, directions, changes in direction of sounds can be detected and assigned to control commands, for which purpose the acoustic signals from at least two microphones 1A, 1B, 1C are detected and recorded and the control circuit 2 the position, position change, direction and / or Direction change of the recorded noise with respect to the luminaire by means of transit time differences of the detected sound in the recorded acoustic signals and the known positions of the microphones 1 A, 1B, 1C to each other.
    The autonomous assignment of events or their noises to control commands allows a high accuracy in the presence detection, since the stored sounds can be detected in the same environment and detected by the same device S, in which or with which the presence detection later he follows. This results in a high similarity of a sound to be detected and a stored sound, which are generated by the same event as the opening of a door.
    A control command may be the turn-on signal of a light switch of a luminaire and / or a signal received via the interface 4 at a specific output terminal. The switching on of a lamp could also be detected by means of the twilight sensor 6.
    Fig. 2 shows the method for presence detection according to an embodiment according to the present invention. In the first step S1, the detection of acoustic signals with at least two microphones 1 A, 1B, 1C takes place. The detected signals can be buffered for processing in a buffer memory. The control circuit 2 performs a continuous noise detection in step S2 in at least one of the detected signals. As soon as a sound having a certain similarity with one of the stored noises is detected in step S2, the determination of the position or direction of the detected noise is carried out in step S3 by determining the propagation time differences of the sound with respect to the detection of the at least two microphones 1A, 1B, 1C. In step S4, when the detected noise with the determined position or direction is assigned a control command, this control command is issued.
    According to the present invention, it is not necessary for the presence detection and the control of devices and devices that a person consciously generates a sound for the control or speaks a specific voice command. Presence detection is controlled by a specific noise that is generated anyway when a person is moving, entering a room, or handling objects.
    If objects (for example an entrance door) constitute a fixed furniture of the room, handling of these objects by different people will relatively reliably lead to a comparable acoustic noise. By contrast, a comparably reliable repetition of acoustic noise is not ensured in the case of speech signals from different persons, in particular if the system is not calibrated to the corresponding persons.
    According to the present invention, the discrimination of a signal recognized as valid can additionally be done on the basis of the volume (amplitude). This means that, for example, door operations can also be distinguished from one another by systems with only one microphone.
    Also, according to the invention, a sorting out of signals, which must not be considered. For example, constantly existing signals such as the noise of a fan or the start of a lift can be detected and they can thus be specifically excluded from the influence of the light.
    权利要求:
    Claims (10)
    [1]
    claims
    1. A presence detection apparatus, characterized in that means (3) are provided for storing noises, each stored noise being associated with a control command; and means (1A, 1B, 1C) for detecting acoustic signals; and means (2) for detecting a sound in a detected acoustic signal; and means (2) for comparing the detected noise with the stored sounds; and means (4) for outputting the control command associated with the detected noise.
    [2]
    2. Apparatus according to claim 1, characterized in that means (4) for inputting and storing noises and their associated control commands in the memory means (3) are provided.
    [3]
    3. Apparatus according to claim 1 or 2, characterized in that a control command is associated with a plurality of different sounds.
    [4]
    4. Device according to one of claims 1 to 3, characterized in that means (4) are provided for receiving a control command; wherein the detection means (2) is adapted to detect a noise in an acoustic signal, which was detected during the received control command or within a certain time period before or after the received control command; and the memory means (3) is adapted to store the detected noise in connection with the received control command.
    [5]
    5. Device according to one of claims 1 to 4, characterized in that means (2) are provided for detecting a position and / or a direction of the noise with respect to the device; wherein the means (2) for comparing or the output means (4) are designed to execute the noise comparison only or to output the control command only when the noise has been detected from a specific position and / or direction.
    [6]
    6. luminaire with a device (S) according to one of claims 1 to 5, characterized in that a control command is a switch-on, switch-off or dimming command for the lamp is provided.
    [7]
    A method of presence detection, characterized in that the steps of: detecting (S1) an acoustic signal; Detecting (S2) a sound in the detected acoustic signal; Comparing (S2) the detected noise with stored sounds, each stored noise being assigned a control command; and outputting (S4) the control command associated with the detected noise; are provided.
    [8]
    8. The method according to claim 7, characterized in that a control command several different sounds are assigned.
    [9]
    A method according to claim 7 or 8, characterized in that the steps of: receiving a control command; and storing a sound detected in an acoustic signal detected during or within a certain period of time before or after the received control command in connection with the received control command; are provided.
    [10]
    10. The method according to any one of claims 7 to 9, comprising the step of detecting (S3) a position and / or direction of the noise; wherein the control command is issued only when the noise has been detected from a specific position and / or direction. For this 2 sheets of drawings
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    法律状态:
    2021-12-15| MM01| Lapse because of not paying annual fees|Effective date: 20210430 |
    优先权:
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