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    • 专利摘要:
    There is provided a container inspection apparatus (10) and a container inspection method for inspecting containers (2). The container inspection device (10) comprises at least one lamp (11 to 15) for illuminating containers (2) at a predetermined inspection time for inspecting the containers (2), and an electrical line for connecting the at least one lamp (11 to 15) to one electrical power supply and to a bus system (6), so that the electrical line serves both for supplying the at least one lamp (11 to 15) with electrical energy and for connection to a real-time data network.
    公开号:AT16388U2
    申请号:TGM50060/2019U
    申请日:2016-02-08
    公开日:2019-08-15
    发明作者:Will Christof；Niedermeier Anton；Aichinger Karl；Klinger Reinhard；Piana Stefan
    申请人:Krones Ag；
    IPC主号:
    专利说明:

    Description: The present invention relates to a container inspection device and a container inspection method for the inspection of containers or their logically assigned secondary packaging units such as beverage crates and containers or pallets. The container inspection device and the container inspection method can be used, for example, in a container treatment system in which the containers are inspected for defects, defects, etc. using the container inspection device.
    [0002] DE 100 17 126 C1 shows a method and a device for the optical inspection of transparent containers. The device for performing the method has an LED fluorescent screen with a large number of LEDs that can be activated individually or in groups. The LED fluorescent screen is arranged next to a stream of transparent containers arranged in a row, a container stream. If the containers are illuminated with the LED screen, an image of the container can be taken to carry out the visual inspection of the containers.
    [0003] An inspection device thus comprises lighting, an optical recording unit and an image evaluation unit. The recording unit and image evaluation unit can be implemented in the same device as, for. B. in so-called vision sensors or intelligent cameras, but also implemented separately, such as. B. a camera and a separate image evaluation unit.
    Various types of technical lights are generally used in inspection technology for illuminating the inspection device. The lighting can be designed as permanent light or switched light or flashed light. In the case of illumination with continuous light, a lighting time T E is understood to be from approximately 1 second to 00 . In the case of illumination with switched light, the lighting time T E is approximately 150 ps to approximately 2 s. When illuminated with flashed light, the lighting time T E , N is approximately 1ps to 400 ps. The transitions are fluid. In the remaining time, i.e. the non-lighting time, the lighting is switched off. This non-lighting time is also referred to below as the switch-off time T A us.
    The inspection of containers, in particular that of containers in container treatment plants for beverage filling during the movement, is preferably carried out with flashed lights. This is also the most complex lighting. If the inspection task allows it, a switched lighting or a steady light could also be used. Flashed or switched lights can have their own energy storage in order to provide a sufficiently large amount of energy for the duration of the lighting time T E , N. In the following, only flash lighting is mentioned, but the explanations also apply in the same way to switched lighting.
    Lighting is triggered by a trigger signal which triggers a predefined flash duration in the lighting, or is controlled by the signal length.
    Accordingly, lighting requires at least the following connections: a power supply, a flashed or switched lighting, and additionally a trigger signal or switch-on signal (T BN signal) for triggering the flashed or switched lighting.
    In the evaluation unit, an aperture (shutter) is used for the recording unit, which can be designed as a 1D, 2D or 3D camera, which is open for a predetermined aperture time T s (shutter time) and releases a recording sensor. Only the temporal intersection of aperture time T s and lighting time T E! N acts effectively on the recording sensor and generates an image with the effective exposure time T B. The intensity of the resulting image is the integral of light intensity in the exposure sensor over the effective exposure time T B. Images of the same intensity can only be achieved if the intensity of the illumination and the effective exposure time T B are constant.
    In technical implementation, either the lighting time T E , N is set so that the aperture time T s is always within the lighting time T E | N lies, or vice versa. However, the / 15
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    Illumination time T E , N cannot be extended arbitrarily, because then the advantages of the actually selected illumination time T E! N will be lost. In the opposite case, the aperture time T s should not be extended arbitrarily, because this makes the recording sensor susceptible to extraneous light, such as ambient light or flashes of light, from other inspection units and can irritate the subsequent evaluation.
    In order to avoid the disadvantages mentioned, the lighting must be synchronized with the recording unit. In the prior art, synchronization is achieved by a common trigger line, or the recording unit controls the lighting via a digital output. It is also possible for the lighting to control the recording unit.
    A clock of the recording unit and a clock of the lighting can be synchronized, for example, via a computer network on which an established time protocol, such as SNTP or NTP, runs. However, a computer network cannot guarantee that a communication packet will reach the recording unit and the lighting as participants in the synchronization within a predefined time. The predefined time is derived, for example, from the image field of the recording unit and the reaction time for recording after the container has been detected.
    The smaller the image field, the shorter the distance between the detection of the container and the location of the picture must be. The time for a transport of the container over the distance results from the transport speed of the container treatment system, which, for. B. in a stretch blow molding machine is up to 8 m / s. An encoder signal is relevant for the response time. The encoder signal is used to check approximately every 100ps to 10ms, typically every 0.2 5ms, whether the container has actually covered the distance between the detection of the container and the location of the recording. The container detection signal and the encoder signal are stimuli for deciding when a recording with the recording unit should be triggered. Because of the short response time and thus predefined time resulting from the conditions mentioned for a container treatment plant, the computer network is ruled out for the timely, synchronous triggering of exposure time and flash time and thus for the required synchronization.
    Another disadvantage of previous solutions in a container inspection device for a container treatment system lies in the complex cabling. In a container treatment plant, the lighting often has to be reconfigured because the lamp color has to be adapted to the container material, lighting segments have to be adapted to the container geometry, etc. In these cases, a supply cable with a trigger signal and other cables must be connected to the lighting.
    With regard to the trigger line, it is also problematic that an unfavorably laid line can couple interference and trigger flash lighting in an uncontrolled manner. Falsely triggered triggers trigger unwanted energy from the energy storage of the lighting. If the energy storage is not sufficiently charged, a necessary flash cannot be carried out at full brightness. As a result, the brightness in the captured image fluctuates, in the worst case the image is too dark. This increases the wiring effort, since, for example, power-carrying (motor) lines must be laid separately from the trigger line.
    Another problem is that the container inspection device requires a large number of rapid exits. In a higher-level system, not only must the stimuli be read in, but outputs must also be provided. This increases the cost of the container inspection device.
    Another disadvantage is that the cabling topology must be known in advance. Any changes or additions require a change in the circuit diagram. Example: Recording units A and B use the same lighting. The recording units A, B act independently of one another. The outputs of both recording units A, B control the
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    Lighting. Diodes are used for decoupling. If you want to switch between transmitted light illumination C and incident light illumination D depending on the processed product, the synchronization between the cameras and the lights is very complex. A solution can be additional AND gates in the lighting path. However, the trigger options must also be known a priori in the cabling topology.
    It is therefore an object of the present invention to provide a container inspection device and a container inspection method for inspecting containers with which the aforementioned problems can be solved. In particular, a container inspection device and a container inspection method for the inspection of containers are to be provided, which can realize that an inspection of the containers reliably fulfills the required quality requirements and is nevertheless simple and inexpensive to implement.
    [0018] This object is achieved by a container inspection device for inspecting containers according to claim 1. The container inspection device comprises at least one lamp for illuminating containers at a predetermined inspection time for inspecting the containers, and an electrical line for connecting the at least one lamp to an electrical power supply and to a bus system, so that the electrical line both for supplying the at least one lamp with electrical energy as well as for connection to a real-time data network.
    With the container inspection device, the requirements for real-time capability for an inspection of the containers can be met inexpensively and effectively.
    Another advantage is that the complexity of cabling between the individual components of the container inspection device or the container treatment system and in the control cabinet of the container inspection device is greatly reduced if the cabling is only accomplished via a single line or plug connection. The container inspection device has a one-line solution for its lights and peripheral devices. Overall, there are significantly fewer electrical lines to be laid in and for the container inspection device. This also saves space in the control cabinet.
    Thus, the bus system describes a bus connection of flash lighting using a single-line solution, so that only one line has to be led to the lighting or the lights. The power supply, the real-time data, such as e.g. B. trigger, and possibly the parameterization of the lighting realized. This means that no separate trigger line has to be routed to the lights. Another advantage is that with the one-line solution, the type of real-time data transmission, i. H. the trigger signal is extremely insensitive to electromagnetic radiation. This greatly simplifies the wiring of the lights and flash lighting, while at the same time improving the trigger reliability.
    This also has the advantage of simple expandability of the overall system by individual components, since no hardware expansion of the central system is necessary for this, but only a further bus subscriber is looped into the combined bus and supply line. It is also advantageous here that several lights or lamps or other appropriately equipped devices can be easily connected in a chain ("daisy chain").
    A great advantage is that the wiring topology is independent of the trigger topology. This increases the flexibility of the overall system.
    Another advantage is that no control outputs on the recording unit or at a higher point for the trigger of the lighting are necessary.
    It is also advantageous that synchronization mechanisms between several lights or lamps can be easily carried out as a software function and no cross-wiring is required. Thus e.g. the suppression or delay of
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    Flash of a second lighting or another, neighboring inspection system can be realized while a first lighting is active. This can e.g. disturbing light reflections or stray light can be avoided.
    Another advantage results from the fact that independent topology can be standardized and no errors in execution can occur during planning, production or commissioning of a commission. The elimination of errors reduces the effort and the system can thus be implemented inexpensively.
    [0027] Advantageous further refinements of the container inspection device are specified in the dependent claims.
    [0028] The bus system is also advantageously designed to supply a trigger signal to the at least one lamp in order to trigger the lighting of containers at the predetermined inspection time for inspecting the containers. As a result, the cabling of the container inspection device is designed to be significantly less complex, more space-saving and less expensive.
    Here, the trigger signal for triggering the at least one lamp can be configured by oversampling the bus system in the single-digit microsecond range.
    It is conceivable that the electrical line is a data cable, of which at least one pair of wires is provided for connection to the electrical power supply and at least one pair of wires is provided for connection to the bus system.
    Possibly, the at least one lamp is an LED flashing light, which has an energy buffer for intermediate storage of the electrical energy supplied by the electrical power supply, and wherein the energy buffer is designed such that the LED flashing light can temporarily extract an amount of energy from the energy buffer which is higher than the energy provided by the electrical energy supply at the time of removal. The buffer store can be designed, for example, as a capacitor or a battery.
    Here, the intermediate energy storage device can be designed such that at least two lights can flash at least temporarily at the same time in the predetermined inspection cycle for illuminating a container, and / or the container inspection device can be designed to control the LED flashing light such that for the same container in one Container flow of a container treatment system, different areas of the LED flashing light can be switched on in succession for inspection of a container.
    Here, the color and / or brightness of the at least one lamp, in particular while illuminating a container, can be controllable.
    [0034] The container inspection device described above can be part of a container treatment system for treating containers.
    [0035] The object is also achieved by a container inspection method for inspecting containers according to claim 9. The container inspection method comprises the steps: supplying, with an electrical line, at least one lamp from an electrical energy supply with electrical energy, transmitting data, with the electrical line, via a bus system, so that the electrical line supplies the at least one lamp with both electrical energy supplies and also connects to a real-time data network, and illuminating containers at a predetermined inspection time for inspecting the containers with the at least one lamp or in a predetermined inspection cycle for triggering via the real-time capable bus line.
    [0036] The container inspection method achieves the same advantages as previously mentioned with regard to the container inspection device.
    [0037] Further possible implementations of the invention also include combinations of previously or hereinafter not explicitly mentioned combinations relating to the exemplary embodiments be4 / 15
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    written features or embodiments. The person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the invention.
    The invention is described in more detail below with reference to the accompanying drawing and using exemplary embodiments. Show it:
    Fig. 1 is a block diagram illustrating a machine with a container inspection device according to a first embodiment;
    [0040] FIG. 2 shows a block diagram to illustrate the electrical connection of the container inspection device according to the first exemplary embodiment; and Fig. 3 is a schematic view of a data frame transmitted in the bus system of the container inspection device according to the first embodiment.
    In the figures, the same or functionally identical elements, unless otherwise stated, are provided with the same reference numerals.
    Fig. 1 shows very schematically a part of a machine 1, for example a container treatment system, in particular an empty bottle inspection machine, full bottle inspection machine, label control device, lid inspection machine, prefom inspection machine, fill level control machine, stretch blow molding machine, filling machine, machine for treating glass containers, etc., a packaging system, can be a box inspection device, etc. Even if machine 1 is partially described below using the example of a container treatment system, machine 1 is not limited to this.
    In the machine 1, containers 2, in particular transparent plastic bottles, glass bottles, metal cans, preforms, empty, full, closed, unsealed, labeled, unlabelled etc., are produced and / or treated. This means that the container inspection device described below can be connected upstream and / or downstream of each treatment step in the container treatment system. Secondary packaging units logically assigned to the containers 2, such as beverage crates and containers or pallets, can also be inspected in the machine 1.
    In FIG. 1, for the sake of simplicity, not all containers 2 are provided with a reference number. The containers 2 are moved in a container stream 3, in which the containers 2 are arranged individually in a row one after the other, with the aid of a transport device 4 through a container inspection device 10 in the direction of an arrow TR. The containers 2 are moved past lights 11, 12 and receiving units 21, 22, 23, 24. The machine 1 is operated by a person 5, for example, or even viewed. Light barriers 71, 72 and / or rotary sensors 81, 82 can detect states of the containers 2 on the transport device 4 or only one movement, in particular rotation, of the transport device 4 without containers 2. The light barriers 71, 72 and / or rotary sensors 81, 82 can be used to detect the path of the containers 2 and thus to determine the speed of the container flow 3. The light barriers 71, 72 and / or rotary sensors 81, 82 are arranged, for example, in a decentralized manner, in particular at the inlet and / or outlet of the containers 2 into / out of the container inspection device 10.
    In the container inspection device 10 of FIG. 1, the lamp 11 is arranged between the receiving units 21, 22 on one side of the container flow 3. The lamp 12 is arranged between the receiving units 23, 24 on the other side of the container stream 3. The containers 2 can thus be illuminated from two different sides. The recording units 23, 24 are positioned such that they can record images of each of the containers 2 from, for example, the four directions R1, R2, R4, R5, which are represented by an arrow in FIG. 1. If required, the recording units 21, 22, 23, 24 can also be positioned differently, so that, for example, pictures are taken from above the lamp 11 at an angle or below the lamp 12 at an angle, and / or pictures are taken at different heights of the containers 2, etc ,
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    Patent Office [0047] One or both lights 11, 12 illuminate the containers 2 on the basis of a control of the detection system illustrated in more detail in FIG. 2 in such a way that one or more of the receiving units 21 to 24 can / can detect the containers 2 optically. The recording units 21 to 24 can, for example, record images which are evaluated for the detection of errors, defects, etc. of the container 2. The recording units 21 to 24 can be cameras.
    The choice of the type of lights 11, 12 is dependent on various framework conditions, such as price, energy consumption (= heat development) and the mutual influence of other inspection devices.
    In the choice of the illuminant (lamp) all types of electrical illuminants are used. In addition to LED lamps, incandescent, halogen, fluorescent, high-pressure discharge and low-pressure discharge lamps can also be used. The wavelength of the lamps covers the range of radiation with a frequency in the Tera-Hertz range up to the range of the wavelength of X-rays.
    2 shows a special embodiment of the container inspection device 10 in more detail. A bus system 6 is provided in machine 1, to which many of the components of machine 1 are connected. In addition, connecting lines 7, 8, 9 are provided.
    In the bus system 6, data can be real-time capable via an electrical line, for example with the Profinet standard (Profinet = Process Field Network) or the Ethernet POWERLINK standard, or according to the EtherCAT standard (Ethernet for Control Automation Technology) according to IEC 61158, etc. The bus system 6 is in particular an Ethernet real-time fieldbus. The bus system 6 provides a real-time data network.
    Via the point-to-point connections (point-to-point: in the true sense - that is, the connection path entirely without an intermediate station) 7, 8 or 9 can be used as recording units 21 to 26 industrial cameras on existing data networks, by using the GigabitEthernet standard be connected. 2, the receiving units 23, 24 are not shown. The connecting line 7 can be implemented in particular for the GigEVision® standard. The connecting line 8 can connect a recording unit 25 to an image recording system 40 via a USB interface. Likewise, the connection line 9 would be a connection via alternative vision protocols such as FireWire or CoaXPress possible.
    In Fig. 2, the container inspection device 10 has the first lamp 11 with an energy buffer 111, a second lamp 12 with an energy buffer 121, a third lamp 13 with an energy buffer 131, a fourth lamp 14 with an energy buffer 141, a fifth lamp 15 with an energy buffer 151 and a first and second light field 152, 153, the first and second recording units 21, 22, a fifth recording unit 25 and a sixth recording unit 26, the recording units 21, 22, 25, 26 forming a recording system and / or each can be designed quite generally as an optical detection device, an optional power injector or electrical energy supply 30, a bus system controller 35, an image recording system 40 with a connection module 41 and to which an electrical line 50 is connected, and a general user interface 55 Signals from light barriers 71, 72 and / or rotary encoders 81, 82 can be passed on to the bus system controller 35, even if this is not shown in FIG. 2.
    The luminaire 15 can also have more than two light fields 152, 153 which can be controlled separately from one another and thus can light up separately from one another. In the case of the second light 14, a light can be controlled in relation to the color and / or brightness curve.
    The energy storage 111, 121, 131, 141, 151 are designed such that the associated lamp 11 to 15 or flashing light can temporarily remove an amount of energy from the respective energy storage 111, 121, 131, 141, 151, which is higher than the energy provided by the electrical energy supply at the time of extraction. With
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    Patent office of the intermediate energy store 111 or the other intermediate energy stores of the lamps 12 to 15 can at least one lamp 11 to 14 and / or a lamp 15 with at least two separate light fields 152, 153 at least temporarily at the same time and / or in quick succession and / or with different duration and / or different electrical current for flashing.
    Thus, the lights 11 to 15 form a flash device that provides a lot of light for a very short time or in pulses. The light pulse does not last very long, usually only a few thousandths of a second at full power, as previously described in the introduction to the description.
    The optional power injector or the electrical power supply 30 can take over or supplement the power supply of the lights 11 to 15 instead of the power supply unit provided in the connection module 41 for supply with a voltage U and can be looped in at any point in the real-time bus system 6 , If a large number of lights 11 to 15 or other consumers are connected to the line for the real-time bus system 6, the feed for the electrical energy supply can take place at several points.
    In Fig. 2, the simplified image recording system 40 has a connection module 41. The connection module 41 is used to connect the electrical line 50, via which an electrical energy supply with the voltage U and the trigger signal TG1 on different wires or pairs of wires are performed. The image recording system 40 also has connections 43, 44 for connecting both the bus system controller 35 and the line of the bus system 6, for example in each case via a data connector, such as an RJ-45 connector. In addition, the image recording system 40 with its connections 42, 45 and 46 shows various connection options for a wide variety of camera interfaces, such as USB Vision Camera Link, CoaXPress, GigEVision or others, with the aid of the connecting lines 7, 8 and 9. The real-time bus system 6 and the connecting lines 7, 8 , 9 are clearly separated from one another via an I / O module or input / output module 48.
    The general user interface 55 can be designed as a personal computer (PC) and can also be referred to as a GUI PC. With the general user interface 55, the person 5 can operate and monitor the container inspection device 10.
    In the image recording system 40 of FIG. 2, a real-time bus, for example, is used to trigger the lighting with at least one of the lamps 11 to 15. B. EtherCat, used in connection with the electrical supply of the lighting in a cable of the bus system 6. If the lighting also needs to be configured, this can be done with the same real-time bus.
    The electrical line for the bus system 6 thus carries both the energy supply for lighting with the lights 11 to 15, and the communication of the real-time bus to the lights 11 to 15. The electrical line for the bus system 6 consists of at least two or more wires or wire pairs. The electrical power supply can use the same wires as the communication, or a part of these wires. It can also be routed through separate wires in the line. The electrical line for the bus system 6 can be designed as a data cable, of which at least one pair of wires is provided for connection to the electrical power supply and at least one pair of wires is provided for connection to the bus system.
    The lights 11 to 15 receive the electrical line for the bus system 6 as a connecting line or cable, further lines or cables not being necessary. The lights 11 to 15 can each have an additional connection. This connects a further light of the lights 11 to 15, etc., via a second line for the bus system 6, so that a kind of chain is created.
    The real-time bus system 6 is not exclusively reserved for the lights 11 to 15. On the real-time bus system 6 z. B. Measuring devices can be included as participants that deliver the stimuli for the inspection of containers 2. This includes different sensors like
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    z. B. the light barriers 71, 72, IR sensors, HF alkali sensors, the rotary sensors 81, 82, distance sensors, metal sensors, color sensors etc. The sensors can be connected directly to the real-time bus system 6 via their own interface, or via an on / off Output device can be connected to the real-time bus system 6.
    It is possible that these sensors or input / output devices are also powered using the energy supply located in the line of the real-time bus system 6.
    At least one recording unit 21, 22, 25, 26 of the image recording system 40 is connected to the same real-time bus system 6 with a real-time interface. However, there is a clear separation of the real-time bus system 6 from the connecting line 7, as shown in FIG. 2 via the input / output module 48 and already mentioned above. An image recording system 40 can support a recording unit 21, 22, 25, 26 or a plurality of independent recording units 21, 22, 25, 26. The interface between recording unit 21, 22, 25, 26 and image recording system 40 can be designed differently. Typical interfaces between image recording system 40 and recording units 21, 22, 25, 26 can be an open standard, such as GigE Vision, USB, Camera Link, or others, but also a proprietary interface. The imaging system 40 could be an intelligent camera with a real-time bus interface.
    However, due to the configuration described above and below within the image recording system 40, it is strictly ensured that the bus system 6 and the network are separate from one another in connection with the connecting line 7, that is to say are not the same or the same.
    The real-time bus system 6 ensures that data is sent and received in finite time and with a short response time or delay time T D. The real-time bus system 6 offers the ability that several or all of the participants connected to the real-time bus system 6 work synchronously, similar to a computer network. The data is sent in a so-called frame or message.
    In the real-time bus system 6 it is ensured that the frame is exchanged cyclically among all participants, such as lights 11 to 15, sensors, etc. The cycle time for sending a frame in the real-time bus system 6 can be from less than one millisecond to several milliseconds. Typical for inspection technology are 0.5 - 10ms, ideally 1 - 2ms. The real-time bus system 6 can synchronize the participants down to a few nanoseconds. In practical implementation, devices such as the participants in the real-time bus system 6, in particular the lights 11 to 15 and the recording units 21, 22, 25, 26, can perform actions that are synchronous with one another in the single-digit ps range. With the real-time bus system 6, the action can be distributed over several devices, such as the participants in the real-time bus system 6, in particular the lights 11 to 15 and the recording units 21, 22, 25, 26, extremely synchronously within a very short reaction time between stimuli and the derived action be performed. One action in the sense of the present description is the synchronous execution of the exposure with the respective recording unit 21, 22, 25, 26 and the lamp flash of the lights 11 to 15.
    The devices are synchronized with one another 1000 times more precisely than the cycle time, since there is synchronism with respect to the devices in the ps range instead of the ms. A distinction must now be made between the response time, between stimuli and action and synchronicity, the time of execution in at least two different devices. The response time is the time that passes in the overall system until at least one action reaches the executing device from input stimuli. The real-time bus system 6 used in the container inspection device 10 offers both.
    The bus system 6 of the container inspection device 10 is designed such that a trigger signal TG1, TG2 any lights of the lights 11 to 15 or any light fields of the light fields 152, 153 of the light 11 or any combination of the recording units 21 to 26 and flash or Can trigger exposure time combinations. It is conceivable for
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    Patent Office, for example, the combination of triggering the recording unit 25 and at the same time, during an exposure time of 100ps of the recording unit 25, activating the lamp 12, which is in particular a transmitted light lamp, for a period of 100ps and at the same time the lamp 13, which is in particular a reflected light lamp, to flash for a period of 50ps.
    Alternatively or additionally, it is possible to activate the lamp 11 for a period of 50ps for a 100ps recording with the recording unit 22 and then to activate the lamp 12 or a light field (not shown) of the lamp 12 for a further 50ps.
    A further embodiment of the container inspection device 10 is that the ps-precise control of the image recording with one of the recording units 21 to 26, the brightness of the recorded image via the flash length and / or energy of one of the lights 11 to 15 or a light field of the light fields 152, 153 of the lamp 15 can be achieved.
    A further possible embodiment is that different light fields 152, 153 of the lamp 15 are triggered at different times during a recording with the recording unit 26. This is necessary, for example, if patterns and / or contrast edges of a container 2 or its label or closure etc. have to be generated in a targeted manner.
    Another design option is the targeted switching on of different color spectra by means of, for example, the lamp 12, it being possible here to call the switching on of the red-green-blue spectrum (RGB spectrum) by means of a light-emitting diode (LED), as well as the near-IR spectrum and / or the UV spectrum. In this context, it goes without saying that all mixed colors can be generated, in particular also during the duration of the flashing process.
    The bus system 6 is designed in such a way that a change in the bus topology, that is to say adding or removing a bus subscriber during operation of the container inspection device 10 is possible (“hot plug”). In addition, the container inspection device 10 can be expanded in a modular manner. These properties are particularly advantageous since, as a result, a standstill of the container treatment system as machine 1 is as short as possible, for example when there is a change of type.
    With the structure described above, the container inspection device 10 has a very robust structure both mechanically and thermally and in relation to the EMC protective measures to be observed.
    3 shows a frame 65 for a transmission of data in the bus system 6 of the container inspection device 10 according to a second exemplary embodiment. The container inspection device 10 and the associated machine 1 are largely implemented in the same manner as described in relation to the first exemplary embodiment. Therefore, only the differences from the first embodiment are described below.
    The frame 65 in FIG. 3 has a frame header 651, a data part 652 and a frame end 652. The data part has data blocks 6521 to 6525.
    As mentioned above, the real-time bus system 6 cyclically sends the frame 65 to all participants after the cycle time has expired. If the response time, cycle time is sufficient, in the sense between the shortest point in time between stimuli and action, but the granularity of the cycle time is not yet sufficient in the application, a data block 6521 to 6525 in data part 652 can be interpreted as oversampling for a specific subscriber. The following example explains this.
    For example, a trigger TG1 should be triggered in 1.6 ms. The cycle time is 1ms. In the simple case, the trigger TG1 can be triggered in one millisecond or after two milliseconds. If 5 values are now used for a trigger in data part 652, oversampling can be carried out. I.e. each value stands for a time of execution in a 0.2 ms grid. In the example in the data part 652 in the data blocks 6521 to 6525, the information [0,0,0,1,0] would mean the oversampling of the trigger time. In order to
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    Patent office, it is possible to execute a trigger in 1.6ms with a temporal resolution of 200ps, although the cycle of the bus system 6 is 1ms in the example. Even if this example describes a five-fold oversampling, the oversampling could be reduced or increased in the data part 652.
    The oversampling need not be the same for all participants in the real-time bus system 6. Participants with larger oversampling, others with none, and still others with lower oversampling, could be operated in the same real-time bus.
    According to a modification of the second embodiment, the oversampling is interpreted as a number instead of the binary digitization described above. A granularity of 256 levels could be achieved with 8 binary digits, for example. In the example, the granularity would then be approximately 3.9 ps.
    Whether the oversampling is interpreted as a “time slice” (second exemplary embodiment) or value (modification of the second exemplary embodiment) is only a question of necessity. Both are possible. Both have advantages. In this way, the granularity can be increased with the same memory allocation, or multiple flashes can be triggered in quick succession with one of the lamps 11 to 15.
    For example, five digits are reserved in the data part 652 as [0,0,0,0,0], the cycle time being 1 ms. So z. B. a granularity of 2 5 = 32 subdivisions with a resolution of 1ms / 32 = 31.25ps can be achieved. Alternatively, each of the 5 digits can be interpreted as a time slice of 200ps. Depending on the inspection task, both interpretations are possible in the same real-time bus system 6. The content [0,0,1,0,1] can mean: 1) Triggering a flash in (2 4 * 0 + 2 3 * 0 + 2 2 * 1 + 2 1 * 0 + 2 ° * 1) * 31 , 25ps = 5 * 32.25ps = 156.25ps, if the data content is interpreted as a binary number. 2) Trigger two flashes at 400ps and 800ps. This means that a flash can be triggered in a highly granular manner. Or flashes are triggered at 400ps intervals in the same lighting. These could be synchronized with two recording units 21, 22. The recording unit 21 “receives” the information [0,0,1,0,0] in the data part 652 and therefore takes a picture at 400ps with the lighting of the lamp 11. The recording unit 22 “receives” the information [0,0,0,0,1] in the data part 652 and takes a picture with the same lighting at the time 800ps. In practice, the information is separated in the image recording system 40 and fed into the correct connecting lines 7 for the recording units 21, 22.
    Otherwise, the container inspection device 10 according to the present exemplary embodiment is designed in the same manner as described in the first exemplary embodiment.
    All of the previously described configurations of the container inspection device 10 and the container inspection method can be used individually or in all possible combinations. In particular, the features of the first to third exemplary embodiments can be combined as desired. In addition, the following modifications are particularly conceivable.
    The parts shown in the figures are shown schematically and may differ in their precise configuration from the shapes shown in the figures, as long as their functions described above are ensured.
    The container inspection device 10 can also have only one lamp, for example the first lamp 11, or two lamps. Alternatively, the container inspection device 10 can also have more than the five lights shown.
    In addition, the container inspection device 10 can also have only one receiving unit, for example the first receiving unit 21. Alternatively, the container inspection device 10 can also have more than six receiving units.
    Additionally or alternatively, it is also possible for successive containers 2 in a container stream 3 of a container treatment system to have different ones in succession
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    Areas of the lights 11 to 15 in the form of an LED flashing light can be switched on for inspecting a container 2.
    In each of the exemplary embodiments, at least one of the lamps 11 to 15 can also be controlled in such a way that the power P for a flash of the lamp 11 to 15 increases continuously over time. In addition, another lamp of lamps 11 to 15 can also be controlled in such a way that the power of lamp 11 to 15 decreases continuously over time t. Other variants are also conceivable here.
    In each of the exemplary embodiments, the luminaires 11 to 15 can be controlled with the maximum output of the luminaire 11 to 15 when the container stream 3 is illuminated, if one or more of the recording units 21 to 26 is to carry out an optical detection or image recording. ,
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    AT16 388U2 2019-08-15 Austrian
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    LIST OF REFERENCE NUMBERS
    123567, 8.910II to 1521 to 263035404143.4442,45,464850556571.7281.82III121131141151152153230, 2406516526536521 to 6525I machinecontainercontainer flowpersonbus systemconnecting cableContainer inspection devicelampcameraelectric energy supplyBus controllerImaging systemConnection module with power supply unit Connection bus systemConnection for image acquisition system 40Input / Output ModulemanagementGeneral user interfaceframelight barriersencodersStorage of energyStorage of energyStorage of energyStorage of energyStorage of energyFirst light fieldSecond light fielddiodeframe headdata partframe enddata blockLight intensity R1, R2, R3, R4 U TG1, TG2 Taus T d Tein TR t Recording direction electrical supply voltage trigger signaloff timeDelay Timelight timeArrow for transport directiontime
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    权利要求:
    Claims (9)
    [1]
    Expectations
    1. container inspection device (10) for inspecting containers (2), with at least one lamp (11 to 15) for illuminating containers (2) at a predetermined inspection time for inspecting the containers (2), and an electrical line for connecting the at least a lamp (11 to 15) to an electrical power supply (30) and to a bus system (6), so that the electrical line both for supplying the at least one lamp (11 to 15) with electrical energy and for connection to a real-time Data network serves.
    [2]
    2. Container inspection device (10) according to claim 1, wherein the bus system (6) is further configured to supply a trigger signal to the at least one lamp (11 to 15), to illuminate containers (2) at the predetermined inspection time for inspecting the containers (2) trigger.
    [3]
    3. Container inspection device (10) according to claim 2, wherein the trigger signal for triggering the at least one lamp (11 to 15) is designed by oversampling the bus system (6) in the single-digit microsecond range.
    [4]
    4. Container inspection device (10) according to any one of the preceding claims, wherein the electrical line is a data cable, of which at least one pair of wires for connection to the electrical power supply (30) and at least one pair of wires for connection to the bus system (6) is provided.
    [5]
    5. Container inspection device (10) according to one of the preceding claims, wherein the at least one lamp (11 to 15) is an LED flashing light, which has an energy buffer (111, 121, 131, 141, 151) for intermediate storage of the supplied by the electrical power supply has electrical energy, and wherein the energy buffer (111, 121, 131, 141, 151) is designed such that the LED flashing light from the energy buffer (111, 121, 131, 141, 151) can temporarily extract an amount of energy that is higher than the energy provided by the electrical energy supply at the time of removal.
    [6]
    6. The container inspection device (10) according to claim 5, wherein the intermediate energy store (111, 121, 131, 141, 151) is designed in such a way that at least two lights (11 to 15) at least temporarily at the same time in the predetermined inspection cycle for illuminating a container (2) can flash, and / or wherein the container inspection device (10) for controlling the LED flashing light is designed such that for the same container (2) in a container stream (3) of a container treatment system, different areas of the LED flashing light for inspecting a container (2 ) can be switched on.
    [7]
    7. container inspection device (10) according to any one of the preceding claims, wherein the color and / or brightness of the at least one lamp (11 to 15), in particular while lighting a container (2), is controllable.
    [8]
    8. Container treatment plant for the treatment of containers (2), with a container inspection device (10) according to one of the preceding claims.
    [9]
    9. container inspection method for the inspection of containers (2), with the steps supply, with an electrical line, at least one lamp (11 to 15) from an electrical energy supply with electrical energy, transmission of data, with the electrical line, via a bus system ( 6), so that the electrical line both supplies the at least one lamp (11 to 15) with electrical energy and connects it to a real-time data network, and illuminates containers (2) at a predetermined inspection time in order to inspect the containers (2) with the at least one a lamp (11 to 15).
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    同族专利:
    公开号 | 公开日
    EP3286552A1|2018-02-28|
    AT16388U3|2020-05-15|
    US20180136142A1|2018-05-17|
    CN107667286A|2018-02-06|
    CN107667286B|2020-10-02|
    EP3286552B1|2021-01-20|
    DE102015106013A1|2016-10-20|
    US10261029B2|2019-04-16|
    WO2016169667A1|2016-10-27|
    DE202015009702U1|2019-05-02|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102015106013.2A|DE102015106013A1|2015-04-20|2015-04-20|Container inspection device and container inspection method for inspecting containers|
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