Vehicle detection system and vehicle detection equipment

Abstract

The utility model discloses a vehicle detection system and a vehicle detection device, the vehicle comprises a tractor and a trailer, the vehicle detection system comprises an ABS power supply detection signal obtaining device, the ABS power supply detection signal obtaining device is connected with an ABS power supply interface of the tractor and is used for obtaining an ABS power supply detection signal; and the trigger diagnosis device is connected with the tractor and the ABS power supply detection signal acquisition device, and is used for sending the detection trigger signal to the tractor and detecting the power supply state of the anti-lock braking system of the trailer according to the ABS power supply detection signal. According to the vehicle detection system, automatic detection of the anti-lock braking system (ABS) function of the trailer can be executed within limited space and time, manpower and time can be saved, the safety and reliability of the trailer can be improved, the quality of the vehicle is improved, and safety accidents are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a vehicle detection system and vehicle detection equipment. Background Art

[0002] The trailer of trailer trucks, RVs, and other special vehicles that are towed needs to be connected to the towing vehicle, but these vehicles are generally long, which makes it difficult to test the brakes of the trailer. These vehicles are generally not tested for the ABS function of their trailers when they leave the factory, or only test whether the towing vehicle can power the ABS of the trailer, but this usually requires manual recording of the test results.

[0003] In the related art, if the ABS of the trailer is not tested before leaving the factory, it is easy to cause safety accidents. In the case of manual measurement, manual operation is required during the inspection. Conventional manual measurement takes at least 3 minutes and requires 2 people to complete it together, which consumes manpower and time. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a vehicle detection system, by setting up the vehicle detection system, the ABS function of the trailer can be automatically detected, which can save manpower and time, and improve the safety and reliability of the trailer, improve the quality of the vehicle, and avoid safety accidents.

[0005] A second purpose of the utility model is to provide a vehicle detection device.

[0006] In order to solve the above problems, the first aspect of the utility model provides a vehicle detection system, wherein the vehicle includes a tractor and a trailer, and the vehicle detection system includes: an ABS power supply detection signal acquisition device, which is connected to the ABS power supply interface of the tractor and is used to obtain an ABS power supply detection signal; a trigger diagnosis device, which is connected to the tractor and the ABS power supply detection signal acquisition device, and is used to send a detection trigger signal to the tractor, and detect the power supply status of the anti-lock braking system of the trailer according to the ABS power supply detection signal.

[0007] According to the vehicle detection system of the utility model, the trigger diagnosis device and the ABS power supply detection signal acquisition device can be two or more devices, each of which is connected by a hard wire or a network cable to jointly realize the detection function. Alternatively, the multiple devices can also be integrated into the same hardware structure, and the vehicle detection system replaces the trailer to be connected to the tractor, which can realize the detection of the power supply status of the anti-lock braking system in a limited space, improve the safety and reliability of the trailer, improve the quality of the vehicle, and avoid safety accidents. The vehicle detection system can automatically perform the detection operation without manual intervention, which can save manpower and time.

[0008] In some embodiments, the ABS power supply interface of the tractor includes at least one of a first power supply interface, a second power supply interface, a ground wire power supply interface, an instrument ABS light power supply interface, a third power supply interface and a fourth power supply interface.

[0009] In some embodiments, the ABS power supply detection signal acquisition device includes: a detection connector, the first end of the detection connector is connected to the first power supply interface, the second power supply interface, the ground wire power supply interface, the instrument ABS light power supply interface, the third power supply interface and the fourth power supply interface.

[0010] In some embodiments, the ABS power supply detection signal acquisition device also includes: a first voltage detection circuit, wherein the first end of the first voltage detection circuit is connected to the second end of the detection connector; a second voltage detection circuit, wherein the first end of the second voltage detection circuit is connected to the second end of the detection connector; a ground wire detection circuit, wherein the first end of the ground wire detection circuit is connected to the second end of the detection connector; an instrument ABS light detection circuit, wherein the first end of the instrument ABS light detection circuit is connected to the second end of the detection connector; a first voltage waveform detection circuit, wherein the first end of the first voltage waveform detection circuit is connected to the second end of the detection connector; and a second voltage waveform detection circuit, wherein the first end of the second voltage waveform detection circuit is connected to the second end of the detection connector.

[0011] In some embodiments, the trigger diagnostic device includes: a diagnostic unit, a first end of the diagnostic unit is connected to the second end of the first voltage detection circuit, the second end of the second voltage detection circuit, the second end of the ground wire detection circuit, the second end of the instrument ABS light detection circuit, the second end of the first voltage waveform detection circuit and the second end of the second voltage waveform detection circuit.

[0012] In some embodiments, the trigger diagnosis device includes: a trigger unit, a first end of which is connected to the tractor, and is used to send an initial detection trigger signal to the tractor to control the tractor to supply power to the first power supply line of the trailer.

[0013] In some embodiments, the second end of the trigger unit is connected to the second end of the diagnostic unit, and the trigger unit is also used to, after determining that the power supply status of the first power supply line is normal, send an initial detection trigger signal to the tractor in a preset order to control the tractor to respectively power the second power supply line of the trailer, the ground line of the trailer, the instrument ABS light, and the CAN bus of the trailer.

[0014] In some embodiments, the vehicle detection system further includes: an alarm device, which is connected to the trigger diagnosis device and is used to alarm when it is determined that the power supply status of the anti-lock braking system of the trailer is abnormal.

[0015] In some embodiments, the vehicle detection system also includes: a diagnostic result generating device, which is wirelessly connected to the diagnostic unit and is used to generate a diagnostic result based on the power supply status of the anti-lock braking system of the trailer; and a printing device, which is connected to the diagnostic result generating device and is used to receive and print the diagnostic result.

[0016] The second aspect of the utility model provides a vehicle detection device, comprising: a vehicle detection system as described in any one of the above embodiments; at least one processor, the processor and the vehicle detection system are electrically connected to the processor; a memory, the memory is communicatively connected to the at least one processor, and the memory stores a computer program that can be executed by the at least one processor.

[0017] According to the vehicle detection device provided by the embodiment of the utility model, the hardware structure of the vehicle detection system of the above embodiment can be directly put into use as a vehicle detection device, or the above vehicle detection system can be added to a vehicle detection device, so that the device has the function of detecting the anti-lock braking system of the trailer. Among them, when the vehicle detection device automatically performs the power supply status detection of the anti-lock braking system of the trailer, the processor executes the computer program stored in the memory to assist the vehicle detection system in realizing the automatic detection of the power supply status of the anti-lock braking system of the trailer, without manual intervention, which can save manpower and time, and can improve the safety and reliability of the trailer through detection, improve the quality of the vehicle, and avoid safety accidents.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a block diagram of a vehicle detection system according to an embodiment of the utility model;

[0021] Figure 2 It is a block diagram of an ABS power supply detection signal acquisition device according to an embodiment of the utility model;

[0022] Figure 3 is a schematic diagram of a detection circuit according to an embodiment of the utility model;

[0023] Figure 4 is a block diagram of a trigger diagnosis device according to an embodiment of the utility model;

[0024] Figure 5 is a block diagram of a vehicle detection system according to an embodiment of the utility model;

[0025] Figure 6 is a block diagram of a vehicle detection system according to yet another embodiment of the utility model;

[0026] Figure 7 It is a block diagram of a vehicle detection device according to an embodiment of the utility model.

[0027] Reference numerals:

[0028] Vehicle testing equipment 1000;

[0029] Vehicle detection system 100, processor 200, memory 300;

[0030] ABS power supply detection signal acquisition device 10, trigger diagnosis device 20, alarm device 30, diagnosis result generation device 40, printing device 50;

[0031] Detection connector 101, first voltage detection circuit 11, second voltage detection circuit 12, ground wire detection circuit 13, instrument ABS light detection circuit 14, first voltage waveform detection circuit 15, second voltage waveform detection circuit 16, diagnosis unit 1, trigger unit 2;

[0032] A first ground wire detection circuit 131 and a second ground wire detection circuit 132 . DETAILED DESCRIPTION

[0033] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0034] Reference below Figure 1 Describe the vehicle detection system according to the embodiment of the utility model, Figure 1 is a block diagram of a vehicle detection system according to an embodiment of the present utility model, wherein Figure 1 As shown, the vehicle detection system 100 includes an ABS power supply detection signal acquisition device 10 and a trigger diagnosis device 20.

[0035] Among them, the structure of vehicles such as trucks, RVs or semi-trailers is usually divided into two parts, a tractor and a trailer. The anti-lock braking system of the trailer is usually powered or controlled by the tractor. However, when detecting the status of the trailer light power supply, the trailer is long and the body is large, which is not convenient for detection. Therefore, the vehicle detection system 100 can be used to replace the trailer and connect to the tractor to achieve detection. Among them, the ABS power supply detection signal acquisition device 10 is connected to the power supply interface of the tractor, and is used to obtain the ABS power supply detection signal when the tractor is powered; the trigger diagnosis device 20 is connected to the tractor and the ABS power supply detection signal acquisition device 10, and is used to send a detection trigger signal to the tractor and obtain the ABS power supply detection signal, and judge the power supply status of the trailer's anti-lock braking system according to the ABS power supply detection signal.

[0036] Specifically, the detection of the ABS function of the trailer can be the detection of the power supply status of the trailer's anti-lock braking system. Therefore, when performing the operation of detecting the power supply status of the trailer's anti-lock braking system, the trigger diagnosis device 20 of the vehicle detection system 100 of this embodiment will send a detection trigger signal to the tractor, and the tractor will power the trailer's anti-lock braking system. The ABS power supply detection signal acquisition device 10 is actually a device that replaces the trailer and is connected to the tractor. When the tractor powers the trailer's anti-lock braking system, the ABS power supply detection signal acquisition device 10 can directly obtain the ABS power supply detection signal and send the ABS power supply detection signal to the trigger diagnosis device 20. The trigger diagnosis device 20 can determine the power supply status of the trailer's anti-lock braking system based on the ABS power supply detection signal, thereby completing the detection of the trailer's ABS function. It should be noted that the above process is performed automatically and can be automatically completed by the system without manual intervention.

[0037] It is understandable that, in actual design, the ABS power supply detection signal acquisition device 10 can adopt the signal acquisition device of the existing trailer detection equipment, and the trigger diagnosis device 20 can be implemented by the diagnostic instrument PORTY instead, which is not limited here. The diagnostic line and the trailer test line can be set separately, or different wire harnesses can be used. If they are the same wire harness, the purpose is to achieve two-way transmission of signals.

[0038] According to the vehicle detection system 100 of the embodiment of the utility model, the trigger diagnosis device 20 and the ABS power supply detection signal acquisition device 10 can be two or more devices, each device is connected by a hard line or a network cable to jointly realize the detection function, or the multiple devices can also be integrated into the same hardware structure to realize the detection of the power supply status of the trailer's anti-lock braking system, thereby improving the safety and reliability of the trailer, improving the quality of the vehicle, and avoiding safety accidents. Among them, the trigger diagnosis device 20 sends a detection trigger signal to control the tractor to power the trailer's anti-lock braking system, and the ABS power supply detection signal acquisition device 10 replaces the trailer and is connected to the power supply interface of the tractor, and can perform detection operations in a limited space. In addition, the ABS power supply detection signal acquisition device 10 acquires the ABS power supply detection signal of the trailer and sends it to the trigger diagnosis device 20, and then the trigger diagnosis device 20 determines the power supply status of the trailer's anti-lock braking system according to the acquired ABS power supply detection signal. The process is all automatically executed by the vehicle detection system 100 without manual intervention, which can save manpower and time.

[0039] In some embodiments, the ABS power supply interface of the tractor includes at least one of a first power supply interface, a second power supply interface, a ground wire power supply interface, an instrument ABS light power supply interface, a third power supply interface, and a fourth power supply interface. It can be understood that the first power supply interface, the second power supply interface, the ground wire power supply interface, the instrument ABS light power supply interface, the third power supply interface, and the fourth power supply interface of the tractor are integrated into an ABS power supply interface, and the tractor is connected to the anti-lock braking system and the instrument ABS light in the trailer through its various ABS power supply interfaces to power them.

[0040] In some embodiments, the ABS power supply detection signal acquisition device 10 includes a detection connector 101 and multiple detection circuits, which can be specifically combined with Figure 2 Understand the ABS power supply detection signal acquisition device 10 according to the embodiment of the present utility model. Figure 2 It is a block diagram of an ABS power supply detection signal acquisition device according to an embodiment of the utility model.

[0041] Among them, reference Figure 2As shown, the ABS power supply detection signal acquisition device 10 specifically includes a detection connector 101, a first voltage detection circuit 11, a second voltage detection circuit 12, a ground wire detection circuit 13, an instrument ABS light detection circuit 14, a first voltage waveform detection circuit 15, and a second voltage waveform detection circuit 16. Among them, the first end of the detection connector 101 is connected to the first power supply interface, the second power supply interface, the ground wire power supply interface, the instrument ABS light power supply interface, the third power supply interface, and the fourth power supply interface. The first voltage detection circuit 11 is connected to the second end of the detection connector 101 for obtaining a first voltage detection signal; the second voltage detection circuit 12 is connected to the second end of the detection connector 101 for obtaining a second voltage detection signal; the ground wire detection circuit 13 is connected to the second end of the detection connector 101 for obtaining a ground wire voltage detection signal; the instrument ABS light detection circuit 14 is connected to the second end of the detection connector 101 for obtaining an instrument ABS light indication signal; the first voltage waveform detection circuit 15 is connected to the second end of the detection connector 101 for obtaining a first voltage waveform detection signal; the second voltage waveform detection circuit 16 is connected to the second end of the detection connector 101 for obtaining a second voltage waveform detection signal.

[0042] It should be noted that the grounding line detection circuit 13 may be provided with two grounding lines or only one line. Figure 3 FIG. 1 is a cross-sectional view of a detection joint according to an embodiment of the utility model. Figure 3 The example in which the grounding line detection circuit 13 includes two grounding lines is shown. The grounding line detection circuit 13 includes a first grounding line detection circuit 131 and a second grounding line detection circuit 132, which correspond to the grounding lines of the first voltage detection circuit 11 and the second voltage detection circuit 12, respectively.

[0043] Furthermore, the above-mentioned detection circuits can be integrated into a power supply harness, and each wire corresponds to the line power supply of the anti-lock braking system of a certain trailer. More specifically, the first power supply interface, the second power supply interface, the ground wire power supply interface, the instrument ABS light interface, the third power supply interface, and the fourth power supply interface of the tractor are integrated into the power supply harness interface on the tractor. It can be understood that the trailer is also equipped with a corresponding power supply harness, and the pins in the power supply harness are adapted to the power supply harness interface. In a normal state, the trailer is connected to the power supply harness interface of the tractor through the power supply harness in the trailer, and the tractor supplies power to the anti-lock braking system of the trailer through the power supply harness, wherein the pins of the power supply harness are provided with grounding. And, in the detection state, the ABS power supply detection signal acquisition device 10 replaces the trailer to connect with the tractor, and at this time, the pins on the first end of the detection connector 101 are adapted to the power supply harness interface of the tractor.

[0044] For example, you can combine Figure 3The anti-lock braking system detection circuit of the embodiment of the present utility model can be understood with Table 1, which is a pin definition table of the anti-lock braking system detection circuit according to an embodiment of the present utility model.

[0045] Table 1

[0046] PIN definition Program number Standard value 11 The first voltage detection circuit 1258 22-28V 12 Second voltage detection circuit 1262 22-28V 131 First ground wire detection circuit 1259 0-0.6V 132 Second ground wire detection circuit 1259 0-0.6V 14 Instrument ABS light detection circuit 1261 Instrument ABS lights up 15 The first voltage waveform detection circuit 1260 3.5V square wave 16 Second voltage waveform detection circuit 1260 1.5V square wave

[0047] Combination Figure 3 As can be seen from Table 1, wires 11 to 16 respectively represent the first voltage detection circuit 11, the second voltage detection circuit 12, the ground wire detection circuit 13, the instrument ABS light detection circuit 14, the first voltage waveform detection circuit 15, and the second voltage waveform detection circuit 16. Exemplarily, in the detection state, the vehicle detection system 10 obtains the first voltage detection signal of the trailer through wire 11 in the power supply harness, and sends it to the trigger diagnosis device 20, which determines the power supply state of the first power supply circuit of the corresponding trailer according to the first voltage detection signal.

[0048] In some embodiments, Figure 4 is a block diagram of a trigger diagnosis device according to an embodiment of the present utility model, referring to Figure 4 As shown, the trigger diagnostic device 20 includes a diagnostic unit 1 .

[0049] Among them, reference Figure 2 and Figure 4 As shown, the first end of the diagnostic unit 1 is connected to the second end of the first voltage detection circuit 11, the second end of the second voltage detection circuit 12, the second end of the ground wire detection circuit 13, the second end of the instrument ABS light detection circuit 14, the second end of the first voltage waveform detection circuit 15 and the second end of the second voltage waveform detection circuit 16, and is used to determine the power supply status of the anti-lock braking system of the trailer according to the acquired ABS power supply detection signal.

[0050] Specifically, after the ABS power supply detection signal acquisition device 10 acquires the ABS power supply detection signal, it directly sends it to the diagnostic unit 1. The diagnostic unit 1 can determine the power supply voltage of the corresponding circuit according to the received ABS power supply detection signal, and judge the power supply status of the anti-lock braking system of the trailer according to the power supply voltage of the corresponding circuit.

[0051] In some embodiments, when determining the power supply status of the anti-lock braking system of the trailer according to the ABS power supply detection signal, the diagnostic unit 1 is used to determine that the power supply voltage of the first power supply circuit meets the first preset voltage threshold according to the first voltage detection signal, determine that the power supply voltage of the second power supply circuit meets the second preset voltage threshold according to the second voltage detection signal, determine that the power supply voltage of the ground circuit meets the third preset voltage threshold according to the ground line voltage detection signal, determine that the instrument ABS light is on according to the instrument ABS light indication signal, determine that the first power supply voltage waveform of the CAN bus meets the first preset voltage waveform threshold according to the first voltage waveform detection signal, and determine that the second power supply voltage waveform of the CAN bus meets the second preset voltage waveform threshold according to the second voltage waveform detection signal. If all of the above conditions are met, it is determined that the power supply status of the anti-lock braking system of the trailer is normal.

[0052] Specifically, the diagnostic unit 1 may include a voltage comparator, and the voltage comparator may be provided with a preset voltage threshold, which is the voltage threshold when the first power supply circuit, the second power supply circuit, and the ground circuit of the trailer are working normally. After the diagnostic unit 1 obtains the first voltage detection signal, the second voltage detection signal, and the ground voltage detection signal from the first voltage detection circuit, the second voltage detection circuit, and the ground wire detection circuit, and obtains the power supply voltage corresponding to each detection signal, the power supply voltage is compared with the corresponding preset voltage threshold through the voltage comparator. If the power supply voltage meets the preset voltage threshold, it is determined that the power supply status of the first voltage detection circuit, the second voltage detection circuit, and the ground wire detection circuit is normal. If not, it indicates that there is a fault and maintenance is required.

[0053] Furthermore, in some embodiments, the ABS light indicator signal is used to determine whether the instrument ABS light is on. If it is on, it indicates that the power supply status of the instrument ABS light is normal. If it is not on, it indicates that the power supply status of the instrument ABS light is abnormal. For example, after the power supply status of the instrument ABS light is determined according to the ABS light indicator signal, the light detection result can be displayed on the display screen and the next step can be automatically executed. For example, when detecting the power supply status of the instrument ABS light, the instrument ABS light is on, and "YES" can be displayed on the display screen, or the instrument ABS light is on, and "NO" can be displayed on the display screen, and then the detection step is continued. In addition, it is also possible to manually observe the status of the instrument ABS light to determine whether the power supply status of the instrument ABS light is normal. If the power supply status of the instrument ABS light is abnormal, the detection can be directly manually stopped.

[0054] Furthermore, it is determined that the voltage waveform of the CAN bus satisfies the preset voltage waveform threshold value according to the voltage waveform detection signal, and it is determined that the power supply state of the trailer's anti-lock braking system is normal. It should be noted that the voltage waveform of the CAN bus of the trailer's anti-lock braking system when it works normally is pre-written in the program of the present method, that is, the preset voltage waveform threshold value. When the vehicle detection system 100 detects the power supply state of the trailer's anti-lock braking system, it can determine the voltage waveform in the corresponding line according to the obtained voltage waveform detection signal, and compare it with the preset voltage waveform threshold value of the line, thereby being able to determine its power supply state.

[0055] It is understandable that the first voltage threshold, the second voltage threshold, the third voltage threshold, the lighting of the instrument ABS light and the voltage waveform threshold can be set according to the design of the vehicle and the normal operation of the trailer anti-lock braking system, and no specific limitation is made here. For example, the first voltage threshold, the second voltage threshold, and the third voltage threshold can be set to be the same or different. The utility model has been described by setting the first voltage threshold and the second voltage threshold to 22-28V, the third voltage threshold to 0-0.6V, the first preset voltage waveform threshold to 3.5V square wave, and the second preset voltage waveform threshold to 1.5V square wave as an example.

[0056] Specifically, the first voltage threshold can be set to 22-28V, and the power supply voltage of the first power supply circuit is determined to meet the first voltage threshold according to the first voltage detection signal, which indicates that the power supply state of the first power supply circuit 11 of the trailer is normal; the second voltage threshold can be set to 22-28V, and the voltage of the second power supply circuit 12 is determined to meet the second voltage threshold according to the second voltage detection signal, which indicates that the power supply state of the second power supply circuit 12 of the trailer is normal; the third voltage threshold can be set to 0-0.6V, and the power supply voltage of the grounding circuit 13 is determined to meet the third voltage threshold according to the third voltage detection signal, which indicates that the power supply state of the grounding circuit 13 of the trailer is normal. It should be noted that when the grounding wire detection circuit 13 includes two grounding wires, it is determined according to the third voltage detection signal that the power supply voltages of the first grounding wire detection circuit 131 and the second grounding wire detection circuit 132 both meet the third voltage threshold, which indicates that the power supply state of the grounding circuit 13 of the trailer is normal, and so on until all the lines of the anti-lock braking system of the trailer are detected. Among them, if the power supply state of all detection circuits is normal, it can be finally determined that the power supply function of the trailer anti-lock braking system is normal.

[0057] In some embodiments, when determining the power supply status of the anti-lock braking system of the trailer according to the ABS power supply detection signal, the diagnostic unit is also used to determine that the power supply voltage of the first power supply circuit does not meet the first preset voltage threshold according to the first voltage detection signal, determine that the power supply status of the anti-lock braking system of the trailer is abnormal and report an error; or, determine that the power supply voltage of the second power supply circuit does not meet the second preset voltage threshold according to the second voltage detection signal, determine that the power supply status of the anti-lock braking system of the trailer is abnormal and report an error; or, determine that the power supply voltage of the grounding circuit does not meet the third preset voltage threshold according to the grounding line voltage detection signal, determine that the power supply status of the anti-lock braking system of the trailer is abnormal and report an error; or, determine that the instrument ABS light indicator signal is not on, determine that the power supply status of the anti-lock braking system of the trailer is abnormal and report an error;

[0058] Alternatively, it is determined based on the first voltage waveform detection signal that the first power supply voltage waveform of the CAN bus does not satisfy the first preset voltage waveform threshold, and the power supply status of the trailer's anti-lock braking system is determined to be abnormal and an error is reported; or, it is determined based on the second voltage waveform detection signal that the second power supply voltage waveform of the CAN bus does not satisfy the second preset voltage waveform threshold, and the power supply status of the trailer's anti-lock braking system is determined to be abnormal and an error is reported.

[0059] Specifically, when the vehicle detection system 100 compares the current ABS power supply detection signal with the corresponding voltage threshold or the instrument ABS light on or the voltage waveform threshold, if the voltage threshold or the voltage waveform threshold is not met or the instrument ABS light is not on, etc., it is determined that the power supply status is abnormal and needs to be repaired.

[0060] For example, if the trailer ABS pin is plugged incorrectly and a fault occurs, if the power supply voltage of the ground wire detection circuit is determined to be 11.64V according to the acquired third voltage detection signal, which is not within the third preset voltage threshold range of 0-0.6V, the ground line 13 power supply state is considered abnormal and an error is reported. At this time, the inspection personnel can directly receive the error information of the vehicle inspection system 100. If the instrument ABS light is not lit during the inspection, the vehicle inspection system is directly manually stopped to interrupt the inspection.

[0061] In some embodiments, reference Figure 4 As shown, the trigger diagnosis device 20 further includes a trigger unit 2. A first end of the trigger unit 2 is connected to the tractor. After the vehicle detection system 100 is powered on, the trigger unit 2 sends an initial detection trigger signal to the tractor, indicating that the detection operation starts to be performed, so as to control the tractor to supply power to the first power supply line of the trailer.

[0062] In other embodiments, reference Figure 4As shown, the second end of the trigger unit 2 is connected to the second end of the diagnostic unit 1. The trigger unit 2 is used to send an initial detection trigger signal to the tractor in a preset sequence after determining that the power supply state of the vehicle light is normal, so as to control the tractor to respectively power the second power supply line of the trailer, the ground line of the trailer, the instrument ABS light, and the CAN bus of the trailer.

[0063] The re-detection trigger signal can be automatically triggered after each detection of the power supply status of a power supply line and judging that it is normal, and the entire detection process does not require manual operation. For example, after the diagnosis unit 1 judges that the power supply status of the first line of the trailer's anti-lock braking system is normal, the trigger unit 2 automatically sends a re-detection trigger signal to the tractor to control the tractor to supply power to the second power supply line of the trailer. The trigger unit 2 controls the tractor to supply power to the lines of the anti-lock braking system of all trailers according to the pre-set detection sequence, thereby ensuring that the anti-lock braking system power supply detection of the trailer will not be missed.

[0064] Specifically, the anti-lock braking system detection circuit and the trigger unit 2 sending the detection trigger signal in the embodiment of the utility model can be understood in conjunction with Table 1. More specifically, when the vehicle detection system in the embodiment of the utility model detects the power supply status of the trailer's anti-lock braking system, the existing trailer detection device can be used for detection.

[0065] In some embodiments, when the trigger unit 2 sends a detection trigger signal to the tractor to control the tractor to supply power to the anti-lock braking system of the trailer, the program starts after the detection starts. The trigger unit 2 can first automatically send an initial detection trigger signal to the tractor, and the initial detection trigger signal is the program number 1258 shown in Table 1. The program number can be used as the first detection trigger signal to the tractor to control the tractor to supply power to the first power supply line of the trailer. Then the ABS power supply detection signal acquisition device 10 acquires the first voltage detection signal of the trailer. When the diagnostic unit 1 determines that the power supply state of the first power supply line of the trailer is normal according to the first voltage detection signal of the trailer, the trigger unit 2 automatically executes the step of sending a re-detection trigger signal. In this way, the trigger unit 2 sequentially controls the tractor to supply power to the first power supply line, the second power supply line, the ground line, the instrument ABS light, and the CAN bus of the anti-lock braking system of the trailer and detects through the diagnostic unit 1.

[0066] Specifically, after the diagnostic unit 1 determines that the power supply status of the line of the anti-lock braking system is normal, the trigger unit 2 sends a first re-detection trigger signal to the tractor, for example, as shown in Table 1, the program number 1262 can be sent to the tractor to control the tractor to supply power to the second power supply line of the trailer; after determining that the power supply status of the second power supply line is normal, a second re-detection trigger signal is sent, for example, as shown in Table 1, the program number 1259 can be sent to the tractor to control the tractor to simultaneously supply power to the first grounding line and the second grounding line of the anti-lock braking system of the trailer; after determining that the power supply status of the grounding line is normal, a third re-detection trigger signal is sent, for example, as shown in Table 1, the program number 1261 can be sent to the tractor to control the tractor to supply power to the instrument ABS light; after determining that the power supply status of the instrument ABS light is normal, a fourth re-detection trigger signal is sent, for example, as shown in Table 1, the program number 1260 can be sent to the tractor to control the tractor to supply power to the CAN bus of the anti-lock braking system of the trailer; after determining that the power supply status of the CAN bus is normal, the detection is completed, and it is determined that the power supply of the anti-lock braking system of the trailer is normal. The above execution procedure takes a total of 10 seconds, while conventional manual measurement takes at least 3 minutes and requires 2 people to complete. The program automatically sends a detection trigger signal to control the power supply of the tractor, saving manpower and time compared to existing technologies.

[0067] It is understandable that in actual production, inspectors may adopt different inspection sequences as needed, which are not limited to the above example and are not specifically limited here.

[0068] In some embodiments, Figure 5 is a block diagram of a vehicle detection system according to an embodiment of the present utility model, wherein reference is made to Figure 5 As shown, the vehicle detection system 100 also includes an alarm device 30, which is connected to the trigger diagnosis device 20 and is used to alarm when it is determined that the power supply state of the anti-lock braking system of the trailer is abnormal. The alarm device 30 can be configured to include a display, which can display the power supply state abnormality information on the screen, and display the error corresponding to the detection circuit of the power supply abnormality on the screen, and can prompt the detection personnel to perform maintenance in the form of text or light.

[0069] In other embodiments, reference Figure 5 As shown, the vehicle detection system 100 further includes a diagnosis result generating device 40 and a printing device 50 .

[0070] The diagnostic result generating device 40 is wirelessly connected to the diagnostic unit 1 to obtain the power supply status of the trailer's anti-lock braking system and generate a diagnostic result according to the power supply status of the trailer's anti-lock braking system; the printing device 50 is connected to the diagnostic result generating device 40 to receive and print the diagnostic result. The diagnostic result generating device 40 can be factory IT (Information Technology), which can sort out the final test results, and the printing device 50 can be a printer or a printing device.

[0071] Specifically, Figure 6 is a block diagram of a vehicle detection system according to another embodiment of the utility model, wherein: Figure 6 The warning device 30 is not shown. Figure 6 The description is made by taking the example that the ABS power supply detection signal acquisition device 10 can adopt the existing trailer detection device, the trigger diagnosis device 2 can be a diagnostic instrument PORTY, the diagnosis result generation device 40 is a factory IT, and the printing device 50 is a printer.

[0072] The diagnostic unit 1 can be connected to the factory IT via WiFi (wireless fidelity, wireless network communication technology), and the factory IT can sort out the final test results. The factory IT is connected to the printer via a network cable and can send the test results to the printer for printing. In addition, when the diagnostic unit 1 determines that there is a power supply failure, it reports an error and sends the error information to the factory IT via WiFi, and the factory IT can also record the error report.

[0073] According to the vehicle detection system 100 of the embodiment of the utility model, by adopting the above-mentioned hardware combination, the ABS function of the trailer can be detected, thereby ensuring the safety and reliability of the trailer. Moreover, the vehicle detection system 100 can automatically perform the detection of the ABS function of the trailer, and can be operated by a single person, saving manpower and time.

[0074] The second aspect of the utility model provides a vehicle detection device, such as Figure 7 , which is a block diagram of a vehicle detection device according to another embodiment of the present utility model, wherein the vehicle detection device 1000 includes a vehicle detection system 100 , a processor 200 and a memory 300 .

[0075] Among them, there is at least one processor 200, and the processor 200 and the vehicle detection system 100 are electrically connected to the processor 200; the memory 300 is communicatively connected to the at least one processor 200, and the memory 300 stores a computer program that can be executed by the at least one processor.

[0076] According to the vehicle detection device 1000 provided by the embodiment of the utility model, the hardware structure of the vehicle detection system 100 of the above embodiment can be directly put into use as the vehicle detection device 1000, or the above vehicle detection system 100 can be added to a vehicle detection device 1000, so that the device has the function of detecting the power supply status of the anti-lock braking system of the trailer. Among them, when the vehicle detection device 1000 automatically performs the power supply status detection of the anti-lock braking system of the trailer, the processor 200 executes the computer program stored in the memory 300 to assist the vehicle detection system 100 in realizing the automatic detection of the power supply status of the anti-lock braking system of the trailer, without manual intervention, which can save manpower and time, and can improve the safety and reliability of the trailer through detection, improve the quality of the vehicle, and avoid safety accidents.

[0077] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0078] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A vehicle detection system, characterized in that: The vehicle includes a tractor and a trailer, and the vehicle detection system includes: An ABS power supply detection signal acquisition device, the ABS power supply detection signal acquisition device is connected to the ABS power supply interface of the tractor and is used to acquire an ABS power supply detection signal; A trigger diagnostic device is connected to the tractor and the ABS power supply detection signal acquisition device, and is used to send a detection trigger signal to the tractor, and detect the power supply status of the anti-lock braking system of the trailer according to the ABS power supply detection signal.

2. The vehicle detection system according to claim 1, characterized in that: The ABS power supply interface of the tractor includes at least one of a first power supply interface, a second power supply interface, a ground wire power supply interface, an instrument ABS light power supply interface, a third power supply interface and a fourth power supply interface.

3. The vehicle detection system according to claim 2, characterized in that: The ABS power supply detection signal acquisition device comprises: A detection connector, wherein the first end of the detection connector is connected to the first power supply interface, the second power supply interface, the ground wire power supply interface, the instrument ABS light power supply interface, the third power supply interface and the fourth power supply interface.

4. The vehicle detection system according to claim 3, characterized in that: The ABS power supply detection signal acquisition device also includes: a first voltage detection circuit, wherein a first end of the first voltage detection circuit is connected to a second end of the detection connector; a second voltage detection circuit, wherein a first end of the second voltage detection circuit is connected to a second end of the detection connector; A ground wire detection circuit, a first end of the ground wire detection circuit is connected to the second end of the detection connector; An instrument ABS light detection circuit, wherein a first end of the instrument ABS light detection circuit is connected to a second end of the detection connector; a first voltage waveform detection circuit, wherein a first end of the first voltage waveform detection circuit is connected to a second end of the detection connector; A second voltage waveform detection circuit, wherein a first end of the second voltage waveform detection circuit is connected to a second end of the detection connector.

5. The vehicle detection system according to claim 4, characterized in that: The trigger diagnosis device comprises: A diagnostic unit, wherein a first end of the diagnostic unit is connected to a second end of the first voltage detection circuit, a second end of the second voltage detection circuit, a second end of the ground wire detection circuit, a second end of the instrument ABS light detection circuit, a second end of the first voltage waveform detection circuit, and a second end of the second voltage waveform detection circuit.

6. The vehicle detection system according to claim 5, characterized in that: The trigger diagnosis device comprises: A trigger unit, a first end of which is connected to the tractor, is used to send an initial detection trigger signal to the tractor to control the tractor to supply power to the first power supply line of the trailer.

7. The vehicle detection system according to claim 6, characterized in that: The second end of the trigger unit is connected to the second end of the diagnostic unit. The trigger unit is further used to, after determining that the power supply status of the first power supply line is normal, send an initial detection trigger signal to the tractor in a preset order to control the tractor to respectively power the second power supply line of the trailer, the ground line of the trailer, the instrument ABS light, and the CAN bus of the trailer.

8. The vehicle detection system according to claim 1, characterized in that: Also includes: An alarm device is connected to the trigger diagnosis device and is used to alarm when it is determined that the power supply state of the anti-lock braking system of the trailer is abnormal.

9. The vehicle detection system according to claim 5, characterized in that: The vehicle detection system also includes: a diagnostic result generating device, the diagnostic result generating device being wirelessly connected to the diagnostic unit and configured to generate a diagnostic result according to a power supply status of the anti-lock braking system of the trailer; A printing device, the printing device is connected to the diagnosis result generating device, and is used to receive and print the diagnosis result.

10. A vehicle detection device, characterized in that: include: The vehicle detection system according to any one of claims 1 to 9; at least one processor, the processor being electrically connected to the vehicle detection system; A memory, the memory is communicatively connected to at least one of the processors, and the memory stores a computer program that can be executed by at least one of the processors.

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