New energy automobile lamp electromagnetic compatibility performance detection device

Abstract

The utility model discloses a new energy automobile lamp electromagnetic compatibility performance detection device which comprises a photosensitive module, an amplification module, a voltage acquisition module, a BNC interface, a control system, a display screen, an SD card and an RS232 interface. The photosensitive module is electrically connected to the amplification module, the amplification module is electrically connected to the voltage acquisition module and the BNC interface, the voltage acquisition module is electrically connected to the control system, and the control system is electrically connected to the display screen, the SD card and the RS232 interface. According to the technical scheme of the utility model, when a test is carried out, outside a test area, the test is not influenced by a test environment, and accurate detection of the vehicle lamp under the conditions of electromagnetic compatibility, high temperature and high humidity is realized. The electromagnetic compatibility performance detection device for the new energy automobile lamp can independently measure and store data, does not need to additionally use equipment such as an oscilloscope and a computer, is not influenced by various environments such as electromagnetic compatibility, high temperature and high humidity, is convenient to carry, low in cost and excellent in performance, and does not damage the vision of testers.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle lamp detection, in particular to an electromagnetic compatibility performance detection device for a new energy vehicle lamp. Background Art

[0002] At present, the headlight detection equipment on the market is placed in the test site. The detection equipment will be affected by the test environment, with low reliability, complex installation, high price, and limited by the number of computer slots, addresses and interrupt resources, and poor scalability. The current electromagnetic compatibility test of headlights is to observe the brightness of the headlights with human eyes or collect the working current of the headlights through an oscilloscope to judge whether the anti-interference performance of the headlights is qualified. Observing the brightness of the headlights with human eyes may damage the eyesight of the testers, and the existing test devices need to be measured with a multimeter, oscilloscope and computer. The operation is cumbersome, there are many components in the system, and the cost is high, so it is increasingly unable to meet the requirements of society.

[0003] In summary, how to design a detection device with a simple structure and convenient operation is a problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0004] The main purpose of the embodiment of the utility model is to provide a new energy vehicle headlight electromagnetic compatibility performance detection device, aiming to design a detection device with simple structure and convenient operation.

[0005] The utility model solves the above technical problem by providing a new energy vehicle headlight electromagnetic compatibility performance detection device, including a photosensitive module, an amplifying module, a voltage acquisition module, a BNC interface, a control system, a display screen, an SD card and an RS232 interface; the photosensitive module is electrically connected to the amplifying module, the amplifying module is electrically connected to the voltage acquisition module and the BNC interface, the voltage acquisition module is electrically connected to the control system, and the control system is electrically connected to the display screen, the SD card and the RS232 interface;

[0006] The photosensitive module is used to convert the optical signal into an electrical signal and transmit it to the amplifying module;

[0007] The amplification module is used to amplify the electrical signal and transmit it to the voltage acquisition module and the BNC interface;

[0008] The BNC interface is used to provide a voltage signal to an external voltage acquisition device such as an oscilloscope;

[0009] The voltage acquisition module is used to collect the voltage value of the electrical signal and transmit it to the control system;

[0010] The control system is used to receive data, calculate and feed back results;

[0011] The display screen is used to display the curve of the test light intensity in real time;

[0012] The SD card is used to store light intensity data;

[0013] The RS232 interface is used to control the communication between the control system and the computer, transmit the collected data or calibrate the device.

[0014] Furthermore, the light sensing module is a photodiode type photosensor with a response time of 80us.

[0015] Furthermore, the amplification module adopts an operational amplifier circuit with a digital potentiometer, and the amplification factor is programmable and adjustable.

[0016] Furthermore, the voltage acquisition module adopts a 16-bit voltage acquisition chip.

[0017] Furthermore, the amplification module is provided with a BNC interface for providing a voltage signal to an external voltage acquisition device.

[0018] Furthermore, the control system adopts a 32-bit single-chip microcomputer.

[0019] Furthermore, the control system is provided with a display screen socket for connecting to a display screen.

[0020] Furthermore, the control system is provided with an SD card socket for connecting an SD card.

[0021] Furthermore, the control system is provided with a chip for serial port conversion to RS232.

[0022] The technical solution of the utility model is that the electromagnetic compatibility performance detection device for new energy vehicle headlights is not affected by the test environment when the test is carried out outside the test area, and realizes accurate detection of headlights under electromagnetic compatibility, high temperature and high humidity conditions. The electromagnetic compatibility performance detection device for new energy vehicle headlights can independently measure and store data without the need for additional equipment such as oscilloscopes and computers. The electromagnetic compatibility performance detection device for new energy vehicle headlights is not affected by various environments such as electromagnetic compatibility, high temperature and high humidity, is easy to carry, has low cost, excellent performance, and will not damage the eyesight of testers. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 This is the overall system structure diagram of the electromagnetic compatibility performance detection device for new energy vehicle lights described in the utility model.

[0025] Figure 2 This is the circuit diagram of the amplifying module of the electromagnetic compatibility performance detection device for new energy vehicle lights described in the utility model.

[0026] Figure 3 This is the circuit diagram of the voltage acquisition module of the electromagnetic compatibility performance detection device for new energy vehicle lights described in the utility model.

[0027] Figure 4 This is a control system circuit diagram of the electromagnetic compatibility performance detection device for new energy vehicle lights described in the utility model.

[0028] Figure 5 This is a structural diagram of the electromagnetic compatibility performance detection device for new energy vehicle lights described in the utility model.

[0029] Description of Figure Numbers:

[0030] Label name Label name 10 Photosensitive module 50 Control System 20 Amplification module 60 Display 30 Voltage acquisition module 70 SD Card 40 BNC connector 80 RS232 interface DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the utility model specification to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "several" or "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] The utility model provides a new energy vehicle headlight electromagnetic compatibility performance detection device, aiming to design a detection device with simple structure and convenient operation.

[0037] The electromagnetic compatibility performance detection device for new energy vehicle lamps proposed by the utility model will be described in the following specific embodiments:

[0038] In the technical solution of this embodiment, a new energy vehicle headlight electromagnetic compatibility performance detection device, such as Figure 1 , Figure 5 As shown, it includes a photosensitive module 10, an amplifying module 20, a voltage acquisition module 30, a BNC interface 40, a control system 50, a display screen 60, an SD card 70 and an RS232 interface 80; the photosensitive module 10 is electrically connected to the amplifying module 20, the amplifying module 20 is electrically connected to the voltage acquisition module 30 and the BNC interface 40, the voltage acquisition module 30 is electrically connected to the control system 50, and the control system 50 is electrically connected to the display screen 60, the SD card 70 and the RS232 interface 80;

[0039] The photosensitive module 10 is used to convert the optical signal into an electrical signal and transmit it to the amplifying module 20;

[0040] The amplifier module 20 is used to amplify the electrical signal and transmit it to the voltage acquisition module 30 and the BNC interface 40;

[0041] The voltage acquisition module 30 is used to acquire the voltage value of the electrical signal and transmit it to the control system 50;

[0042] BNC interface 40, used to provide voltage signals to external voltage acquisition equipment such as an oscilloscope;

[0043] A control system 50, for receiving data, calculating and feeding back results;

[0044] Display screen 60, used for displaying the curve of the test light intensity in real time;

[0045] SD card 70, used to store light intensity data;

[0046] The RS232 interface 80 is used to control the system 50 and communicate with the computer, transmit the collected data or calibrate the detection device.

[0047] like Figure 2 As shown, the amplification module 20 includes an operational amplifier U10 and a digital potentiometer U8. Ports 2 and 3 of the operational amplifier U10 are electrically connected to the photosensitive module 10, and the ADV_IN port of the operational amplifier U10 is electrically connected to the voltage acquisition module 30 and the BNC interface 40. The electrical signal output by the photosensitive module 10 is amplified by the operational amplifier U10 and then transmitted to the voltage acquisition module 30 and the BNC interface 40. The digital potentiometer U8 is electrically connected to the control system 50 through the SCL and SDA ports. The control system 50 can control the amplification factor of the operational amplifier U10 by controlling the digital potentiometer U8, thereby realizing the function of programmable adjustable amplification factor.

[0048] like Figure 3 As shown, the voltage acquisition module 30 includes a 16-bit voltage acquisition chip U9. The voltage acquisition chip U9 is electrically connected to the control system 50 through ports such as CONVSTA, AD_RES, AD_SCK, AD_CS, BUSY, DOUTA and DOUTB, and is electrically connected to the amplifier module 20 through the ADV_IN port. The voltage acquisition chip U9 converts the voltage value transmitted by the amplifier module 20 into a digital signal and transmits it to the control system 50.

[0049] like Figure 4As shown, the control system 50 includes a 32-bit single-chip microcomputer U1, a display screen interface U6, a serial port to RS232 chip U7 and an SD card holder CRAD1. The single-chip microcomputer U1 is electrically connected to the display screen interface U6, the serial port to RS232 chip U7, the SD card holder CRAD1, the digital potentiometer U8 of the amplification module 20 and the voltage acquisition chip U9 of the voltage acquisition module 30. The single-chip microcomputer U1 is used to receive data, calculate and give feedback results. The display screen interface U6 is electrically connected to the display screen 60 for displaying the curve of the test light intensity. The SD card holder CRAD1 is electrically connected to the SD card 70 for storing the collected light intensity data. The serial port to RS232 chip U7 is electrically connected to the RS232 interface 80 for communicating with a computer, uploading collected data or calibrating the electromagnetic compatibility performance detection device of the new energy vehicle headlight.

[0050] Working principle of electromagnetic compatibility performance testing device for new energy vehicle lights:

[0051] One end of the optical fiber is fixed to the surface of the light source to be tested, and the other end is connected to the electromagnetic compatibility performance detection device of the headlight of a new energy vehicle. The light source emitted by the lamp is transmitted to the photosensitive module 10 through the optical fiber, and the optical signal is converted into an electrical signal. Then, the voltage signal is amplified by the amplifier module 20 with a programmable amplification factor. The amplified voltage is connected to the BNC interface 40, and the voltage value can be collected by a multimeter or an oscilloscope through a coaxial cable. At the same time, the amplified voltage is transmitted to the control system 50 through the voltage collection module 30. The control system 50 records the voltage value in the SD card 70 and displays the numerical curve of the test light intensity in real time on the display screen 60. The control system 50 can also realize RS232 bus communication with the computer through the RS232 interface 80 to transmit the collected data or calibrate the device.

[0052] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A new energy vehicle headlight electromagnetic compatibility performance detection device, characterized in that: It includes a photosensitive module, an amplifying module, a voltage acquisition module, a BNC interface, a control system, a display screen, an SD card and an RS232 interface; the photosensitive module is electrically connected to the amplifying module, the amplifying module is electrically connected to the voltage acquisition module and the BNC interface, the voltage acquisition module is electrically connected to the control system, and the control system is electrically connected to the display screen, the SD card and the RS232 interface; The photosensitive module is used to convert the optical signal into an electrical signal and transmit it to the amplifying module; The amplification module is used to amplify the electrical signal and transmit it to the voltage acquisition module and the BNC interface; The BNC interface is used to provide a voltage signal to an external voltage acquisition device of the oscilloscope; The voltage acquisition module is used to collect the voltage value of the electrical signal and transmit it to the control system; The control system is used to receive data, calculate and feed back results; The display screen is used to display the curve of the test light intensity in real time; The SD card is used to store light intensity data; The RS232 interface is used to control the communication between the control system and the computer, transmit the collected data or calibrate the detection device.

2. The electromagnetic compatibility performance testing device for new energy vehicle lights according to claim 1 is characterized in that: The photosensitive module is a photodiode type photosensor with a response time of 80us.

3. The electromagnetic compatibility performance testing device for new energy vehicle lights according to claim 1 is characterized in that: The amplification module adopts an operational amplifier circuit with a digital potentiometer, and the amplification factor is programmable and adjustable.

4. The electromagnetic compatibility performance testing device for new energy vehicle lights according to claim 1 is characterized in that: The voltage acquisition module adopts a 16-bit voltage acquisition chip.

5. The electromagnetic compatibility performance testing device for new energy vehicle lights according to claim 1 is characterized in that: The amplification module is provided with a BNC interface for providing a voltage signal to an external voltage acquisition device.

6. The electromagnetic compatibility performance testing device for new energy vehicle lights according to claim 1 is characterized in that: The control system adopts a 32-bit single-chip microcomputer.

7. The electromagnetic compatibility performance testing device for new energy vehicle lights according to claim 1 is characterized in that: The control system is provided with a display screen socket for connecting the display screen.

8. The electromagnetic compatibility performance testing device for new energy vehicle lights according to claim 1 is characterized in that: The control system is provided with an SD card socket for connecting an SD card.

9. The electromagnetic compatibility performance testing device for new energy vehicle lights according to claim 1, characterized in that: The control system is provided with a chip for serial port conversion to RS232.

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