Equipment light monitoring system

Abstract

The utility model discloses an equipment light monitoring system. Comprising a condensing lens, an optical fiber, a signal conversion device and a signal transmission device. And the condensing lens is arranged at a light outlet of the to-be-tested equipment, is connected with the signal conversion device through an optical fiber, and is used for collecting the light signal of the to-be-tested equipment and sending the light signal to the signal conversion device through the optical fiber. The light of the to-be-tested equipment is effectively gathered without scattering, so that the monitoring effectiveness of the system is ensured. And meanwhile, the passive condensing lens does not influence the electromagnetic interference monitoring result, and the electromagnetic interference influence of other equipment can be avoided through optical fiber light transmission. The signal conversion device is connected with the electromagnetic interference monitoring unit through the signal transmission device. And the signal conversion device is used for converting the light signal into a monitoring electric signal and sending the monitoring electric signal to the electromagnetic interference monitoring unit through the signal transmission device, so that the problems of inaccuracy and high cost caused by manual judgment can be avoided.

Description

Technical Field

[0001] This application relates to the field of electromagnetic compatibility testing technology, and particularly to a system for monitoring the lights of a device. Background Art

[0002] With the development of automotive intelligence, the vehicle cockpit has gradually become a place for people to drive, rest, and entertain. The control units in the cockpit are becoming more and more abundant, such as head-up displays, ambient lights, information entertainment systems, etc. The information and light colors displayed by various control units are also becoming more and more complex. Whether multiple control units can coexist without interference under the conditions of limited in-vehicle space and spectrum resources requires electromagnetic compatibility testing.

[0003] In the existing technology, in electromagnetic compatibility testing, the light signals of the device under test are mostly transmitted to an external display through a camera. The test operator needs to observe the display screen for monitoring and judge the electromagnetic interference situation of the device under test based on subjective awareness. This method requires labor costs, and the test operator is prone to fatigue when looking at various lights for a long time, and may ignore situations such as screen flashing and light dimming. There are also light changes that are difficult to detect by the naked eye and are weak, resulting in the accuracy of the monitoring results not being guaranteed. Therefore, how to accurately monitor the light state of the device under test has become an urgent problem to be solved. Utility Model Content

[0004] Based on the above problems, this application provides a system for monitoring the lights of a device to accurately monitor the light state of the device under test, which has become an urgent problem to be solved.

[0005] This application discloses a system for monitoring the lights of a device, and the system includes: a condenser lens, an optical fiber, a signal conversion device, and a signal transmission device;

[0006] The condenser lens disposed at the light outlet of the device under test is connected to the signal conversion device through the optical fiber;

[0007] The signal conversion device is connected to the electromagnetic interference monitoring unit through the signal transmission device;

[0008] The condenser lens is used to collect the light signal of the device under test and send the light signal to the signal conversion device through the optical fiber;

[0009] The signal conversion device is used to convert the light signal into a monitoring electrical signal and send the monitoring electrical signal to the electromagnetic interference monitoring unit through the signal transmission device.

[0010] Optionally, the signal conversion device includes: a light signal processor and a signal transceiver;

[0011] One end of the light signal processor is connected to the optical fiber and is used for converting the light signal into a monitoring electrical signal;

[0012] The other end of the light signal processor is connected to the signal transmission device through the signal transceiver and is used for sending the monitoring electrical signal to the signal transmission device via the signal transceiver.

[0013] Optionally, the monitoring electrical signal includes a light intensity electrical signal and a color electrical signal, and the light signal processor includes: an MCU processor, a photosensitive sensor, and a light color extractor that are respectively connected to the MCU processor;

[0014] The photosensitive sensor is used for sending the light intensity signal obtained from the light signal to the MCU processor;

[0015] The light color extractor is used for sending the color signal obtained from the light signal to the MCU processor;

[0016] The MCU processor is connected to the signal transceiver and is used for converting the light intensity signal into the light intensity electrical signal, converting the color signal into the color electrical signal, and sending the light intensity electrical signal and / or the color electrical signal to the signal transceiver.

[0017] Optionally, the signal transmission device is a CAN card, and the signal transceiver is a CAN transceiver.

[0018] Optionally, the light signal processor further includes: an optical fiber splitter;

[0019] One end of the optical fiber splitter is connected to the optical fiber, and the other end is respectively connected to the photosensitive sensor and the light color extractor and is used for respectively sending the light signal to the photosensitive sensor and the light color extractor.

[0020] Optionally, the signal conversion device further includes: a secondary power supply connected to the power supply access terminal;

[0021] The secondary power supply is used for providing electrical energy for the signal conversion device.

[0022] Optionally, the device under test, the condenser lens, and one end of the optical fiber connected to the condenser lens are in a dark room, and one end of the optical fiber connected to the signal conversion device is not in a dark room.

[0023] Optionally, the system further includes the electromagnetic interference monitoring unit, which is used for analyzing the monitoring electrical signal to obtain a monitoring result.

[0024] Optionally, the electromagnetic interference monitoring unit includes: a monitoring electrical signal analysis unit and a monitoring result output unit;

[0025] The input end of the monitoring electrical signal analysis unit is connected to the signal transmission device, and the output end is connected to the monitoring result output unit; the monitoring electrical signal analysis unit includes an optical intensity electrical signal analysis unit and a color electrical signal analysis unit;

[0026] The monitoring result output by the monitoring result output unit is used to indicate the lighting state of the device to be measured.

[0027] Optionally, the monitoring result output unit is configured to output an indication signal when the monitoring electrical signal meets a preset state; the preset state is that the optical intensity electrical signal exceeds a preset range and / or the color electrical signal changes.

[0028] The present application discloses a system for monitoring the lighting of a device. It includes a condenser lens, an optical fiber, a signal conversion device, and a signal transmission device. The condenser lens arranged at the light outlet of the device to be measured is connected to the signal conversion device through the optical fiber, and is used to collect the lighting signal of the device to be measured and send the lighting signal to the signal conversion device through the optical fiber. It ensures that the lighting of the device to be measured is effectively aggregated without scattering, thereby ensuring the monitoring effectiveness of the system. At the same time, the passive condenser lens will not affect the electromagnetic interference monitoring result, and transmitting the lighting through the optical fiber can also avoid the influence of electromagnetic interference from other devices. The signal conversion device is connected to the electromagnetic interference monitoring unit through the signal transmission device. The signal conversion device is used to convert the lighting signal into a monitoring electrical signal and send the monitoring electrical signal to the electromagnetic interference monitoring unit through the signal transmission device. The electromagnetic interference monitoring unit monitors the electromagnetic interference situation of the device to be measured according to the monitoring electrical signal, which can avoid the problems of inaccuracy and high cost caused by manual judgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0030] Figure 1 It is a schematic structural diagram of a system for monitoring the lighting of a device disclosed in an embodiment of the present application;

[0031] Figure 2 It is a schematic structural diagram of another system for monitoring the lighting of a device disclosed in an embodiment of the present application;

[0032] Figure 3 It is a schematic structural diagram of another system for monitoring the lighting of a device disclosed in an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0034] Embodiment 1: The present application discloses a system for monitoring the lights of a device.

[0035] Specifically, please refer to Figure 1 , a system for monitoring the lights of a device disclosed in this embodiment includes: a condenser lens 101, an optical fiber 102, a signal conversion device 103, and a signal transmission device 104.

[0036] The condenser lens 101 disposed at the light outlet of the device to be measured is connected to the signal conversion device 103 through the optical fiber 102. The signal conversion device 103 is connected to the electromagnetic interference monitoring unit through the signal transmission device 104. Among them, the electromagnetic interference monitoring unit can be a desktop computer, or other devices such as mobile phones and tablet computers that can be movable or immovable, as long as this device can analyze the monitored electrical signals and judge the electromagnetic interference situation according to the monitored electrical signals. The electromagnetic interference monitoring unit is not specifically limited here.

[0037] The condenser lens 101 is used to collect the light signal of the device to be measured and send the light signal to the signal conversion device 103 through the optical fiber 102. The signal conversion device 103 is used to convert the light signal into a monitored electrical signal and send the monitored electrical signal to the electromagnetic interference monitoring unit through the signal transmission device 104. The electromagnetic interference monitoring unit is used to analyze the monitored electrical signal to obtain a monitoring result, that is, to judge the electromagnetic interference situation of the device to be measured according to the monitored electrical signal.

[0038] Among them, the device to be measured, the condenser lens 101, and the end of the optical fiber 102 connected to the condenser lens 101 are in a dark room, and the end of the optical fiber 102 connected to the signal conversion device 103 is not in a dark room.

[0039] In the system described in this embodiment, Figure 2 is a schematic structural diagram of another system for monitoring the lights of a device disclosed in the embodiments of the present application. As an optional solution, as Figure 2 shown, the signal conversion device 103 includes: a light signal processor 201 and a signal transceiver 202.

[0040] One end of the light signal processor 201 is connected to the optical fiber 102 and is used to convert the light signal into a monitoring electrical signal. The other end of the light signal processor 201 is connected to the signal transmission device 104 through the signal transceiver 202 and is used to send the monitoring electrical signal to the signal transmission device 104 via the signal transceiver 202. Wherein, the signal transmission device 104 can be a CAN card, and the signal transceiver 202 can be a CAN transceiver. As long as the signal transmission device 104 and the signal transceiver 202 can transmit signals, the signal transmission device 104 and the signal transceiver 202 are not specifically limited herein.

[0041] In addition, the signal conversion device 103 may further include a secondary power supply connected to the power access terminal. The secondary power supply is used to supply electrical energy to the signal conversion device 103.

[0042] In the system described in this embodiment, Figure 3 It is a schematic structural diagram of another device light monitoring system disclosed in the embodiments of the present application. As an alternative solution, as Figure 3 shown, when the monitoring electrical signal includes a light intensity electrical signal and a color electrical signal, the light signal processor 201 includes: an MCU processor 301, a photosensitive sensor 302, and a light color extractor 303 respectively connected to the MCU processor 301. Among them, the monitoring electrical signal may include both a light intensity electrical signal and a color electrical signal, or may only include one of them.

[0043] The photosensitive sensor 302 is used to send the light intensity signal obtained from the light signal to the MCU processor 301. The light color extractor 303 is used to send the color signal obtained from the light signal to the MCU processor 301.

[0044] The MCU processor 301 is connected to the signal transceiver 202 and is used to convert the light intensity signal into the light intensity electrical signal, convert the color signal into the color electrical signal, and send the light intensity electrical signal and / or the color electrical signal to the signal transceiver 202.

[0045] As another alternative solution, the light signal processor 201 further includes an optical fiber splitter 304. One end of the optical fiber splitter 304 is connected to the optical fiber 102, and the other end is respectively connected to the photosensitive sensor 302 and the light color extractor 303 and is used to send the light signal to the photosensitive sensor 302 and the light color extractor 303 respectively.

[0046] In the system described in this embodiment, the electromagnetic interference monitoring unit includes a monitoring electrical signal analysis unit and a monitoring result output unit. The input end of the monitoring electrical signal analysis unit is connected to the signal transmission device 104, and the output end is connected to the monitoring result output unit. Among them, the monitoring electrical signal analysis unit further includes a light intensity electrical signal analysis unit and a color electrical signal analysis unit.

[0047] The monitoring result output by the monitoring result output unit is used to indicate the lighting state of the device under test. The monitoring result output unit is configured to output an indication signal when the monitoring electrical signal meets a preset state. Among them, the preset state is that the light intensity electrical signal exceeds a preset range and / or the color electrical signal changes.

[0048] As an implementable solution, the electromagnetic interference monitoring unit can monitor the situation of the light intensity electrical signal based on the light intensity electrical signal and the preset range. Specifically, the lighting brightness is obtained according to the light intensity electrical signal, and the situation of the light intensity electrical signal is obtained by comparing the lighting brightness with the preset range. For example, the electromagnetic interference monitoring unit can use LabVIEW software to read and judge whether the lighting brightness exceeds the acceptable range (preset range), display and record it on the software, and name the display quantity bright (bright is default green). When the lighting brightness does not exceed the preset range, bright is green. When the lighting brightness exceeds the preset range, bright becomes red. When the lighting brightness exceeds the preset range and then returns to the preset range, bright becomes yellow.

[0049] The electromagnetic interference monitoring unit can also monitor the situation of the color electrical signal based on the change situation of the color electrical signal. For example, the electromagnetic interference monitoring unit can use LabVIEW software to read and display the color electrical signal, name the display quantity RGB (RGB is default green), and judge whether the lighting color changes according to the change situation of the color electrical signal. When the lighting color does not change, RGB is green. When the lighting color changes, RGB becomes red. When the lighting color changes from the changed state to the unchanged state, RGB becomes yellow. As an optional solution, RGB only turns red when the lighting color change is judged twice consecutively to prevent misjudgment.

[0050] In the system described in this embodiment, the electromagnetic interference monitoring unit can monitor the electromagnetic interference situation of the device under test based on the situation of the light intensity electrical signal and / or the situation of the color electrical signal. Among them, the electromagnetic interference situation includes passing the monitoring, in the process of a fault, and having had a fault. For example, the display quantity being green indicates passing the monitoring, being red indicates in the process of a fault, and being yellow indicates having had a fault.

[0051] The system described in this embodiment can accurately monitor the light brightness and color of the device under test with lights in the electromagnetic compatibility test without affecting the electromagnetic test environment. Using optical fibers and condenser lenses will not introduce the interference in the test area to the non-test area and affect the monitoring equipment, nor will it introduce the interference in the non-test area into the test area and affect the monitoring results. Automated non-manual monitoring can save costs while making the monitoring results more accurate, avoiding problems such as fatigue of testers, omission of records, and misjudgment. The system described in this embodiment can also monitor the light brightness and color simultaneously. The device under test can play dynamic images of different colors, which is more in line with the actual work requirements.

[0052] It should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0053] The steps of the method or algorithm described in connection with the embodiments disclosed herein can be implemented directly in hardware, a software module executed by a processor, or a combination of both. The software module can be placed in a random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium well-known in the technical field.

[0054] The features described in the embodiments in this specification can be replaced or combined with each other, enabling those skilled in the art to implement or use this application.

[0055] The above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A system for monitoring device lighting, characterized in that, Including: A condenser lens, an optical fiber, a signal conversion device, and a signal transmission device; The condenser lens disposed at the light outlet of the device under test is connected to the signal conversion device through the optical fiber; The signal conversion device is connected to the electromagnetic interference monitoring unit through the signal transmission device; The condenser lens is used to collect the light signal of the device under test and send the light signal to the signal conversion device through the optical fiber; The signal conversion device is used to convert the light signal into a monitoring electrical signal and send the monitoring electrical signal to the electromagnetic interference monitoring unit through the signal transmission device.

2. The system according to claim 1, wherein The signal conversion device includes: a light signal processor and a signal transceiver; One end of the light signal processor is connected to the optical fiber and is used to convert the light signal into a monitoring electrical signal; The other end of the light signal processor is connected to the signal transmission device through the signal transceiver and is used to send the monitoring electrical signal to the signal transmission device via the signal transceiver.

3. The system according to claim 2, wherein The monitoring electrical signal includes a light intensity electrical signal and a color electrical signal. The light signal processor includes: an MCU processor, a photosensitive sensor, and a light color extractor respectively connected to the MCU processor; The photosensitive sensor is used to send the light intensity signal obtained from the light signal to the MCU processor; The light color extractor is used to send the color signal obtained from the light signal to the MCU processor; The MCU processor is connected to the signal transceiver and is used to convert the light intensity signal into the light intensity electrical signal, convert the color signal into the color electrical signal, and send the light intensity electrical signal and / or the color electrical signal to the signal transceiver.

4. The system according to claim 2, characterized in that The signal transmission device is a CAN card, and the signal transceiver is a CAN transceiver.

5. The system according to claim 3, characterized in that, The light signal processor further includes: an optical fiber splitter; One end of the optical fiber splitter is connected to the optical fiber, and the other end is respectively connected to the photosensitive sensor and the light color extractor, and is used to send the light signal to the photosensitive sensor and the light color extractor respectively.

6. The system according to claim 1, characterized in that, The signal conversion device further includes: a secondary power supply connected to the power supply access terminal; The secondary power supply is used to provide electrical energy for the signal conversion device.

7. The system according to claim 1, wherein The device under test and the condenser lens, and one end of the optical fiber connected to the condenser lens are in a dark room, and one end of the optical fiber connected to the signal conversion device is not in a dark room.

8. The system according to claim 1, characterized in that The system further includes the electromagnetic interference monitoring unit, which is used to analyze the monitoring electrical signal to obtain a monitoring result.

9. The system according to claim 8, wherein The electromagnetic interference monitoring unit includes: a monitoring electrical signal analysis unit and a monitoring result output unit; The input end of the monitoring electrical signal analysis unit is connected to the signal transmission device, and the output end is connected to the monitoring result output unit; the monitoring electrical signal analysis unit includes a light intensity electrical signal analysis unit and a color electrical signal analysis unit; The monitoring result output by the monitoring result output unit is used to indicate the light state of the device under test.

10. The system according to claim 9, characterized in that, The monitoring result output unit is configured to output an indication signal when the monitored electrical signal meets a preset state; the preset state is that the optical intensity electrical signal exceeds a preset range and / or the color electrical signal changes.

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