Complete vehicle quiescent current test method and device, terminal equipment and storage medium

Abstract

The invention discloses a vehicle quiescent current test method and device, terminal equipment and a storage medium. The method comprises the following steps: acquiring an equipment fault message of a test vehicle; wherein the test vehicle is arranged in an electron radiation test field; the electron radiation test field generates an electron radiation field outside the test vehicle through a free field method; transmitting the equipment fault message to a test vehicle so as to enable the test vehicle to operate in the electron radiation field based on the equipment fault message; and receiving a fault code generated by the test vehicle, and generating a test result of the quiescent current based on the fault code. According to the invention, various electromagnetic conditions outside the vehicle are simulated by setting the electron radiation test field, and a quiescent current test result under a real condition can be obtained under the electromagnetic conditions simulated outside the vehicle by setting different equipment fault messages, so that the accuracy of the quiescent current of the whole vehicle is greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of automotive electronic technology, and in particular to a whole vehicle static current testing method, device, terminal equipment and storage medium. Background Art

[0002] In order to improve the user experience, even if the car computer is not working, it will remain in standby or dormant state to ensure timely wake-up next time or keep the vehicle network working normally. At the same time, it is convenient for customers to use mobile phones to remotely control the vehicle to achieve related functions (air conditioning, door locks, and car search, etc.). This causes the car computer to be affected by the external mobile communication network and the static current of the whole vehicle;

[0003] In the past, due to the closed internal communication network of the vehicle being less affected by the external network, generally only static current testing of the vehicle in the locked state and network testing of the control module ECU were arranged, and static current testing of the vehicle in a complex external electromagnetic field environment was not arranged; resulting in low accuracy of the static current of the vehicle.

[0004] Therefore, a whole vehicle static current testing strategy is urgently needed to solve the problem of low accuracy of the vehicle's static current. Summary of the invention

[0005] The embodiments of the present invention provide a whole vehicle static current testing method, device, terminal equipment and storage medium to solve the problem of low accuracy of the whole vehicle static current.

[0006] In order to solve the above problem, an embodiment of the present invention provides a vehicle static current testing method, comprising:

[0007] Acquiring a device fault message of a test vehicle; wherein the test vehicle is arranged in an electronic radiation test field; the electronic radiation test field generates an electronic radiation field outside the test vehicle by a free field method;

[0008] transmitting the device fault message to a test vehicle so that the test vehicle operates in the electronic radiation field based on the device fault message;

[0009] A fault code generated by the test vehicle is received, and a test result of a static current is generated based on the fault code.

[0010] As an improvement of the above scheme, the electronic radiation test field includes: an anechoic chamber, a radio frequency signal generator, a power amplifier, a dual directional coupler, a power meter, a coaxial feedthrough hole and a transmitting antenna;

[0011] The coaxial feedthrough hole is arranged on the side of the anechoic chamber, the anechoic chamber, the radio frequency signal generator, the power amplifier, the dual directional coupler and the power meter are arranged outside the anechoic chamber, and the transmitting antenna is arranged inside the anechoic chamber;

[0012] The radio frequency signal generator is connected to the power amplifier, the power amplifier is connected to the dual directional coupler, the dual directional coupler is connected to the power meter, and the dual directional coupler, the coaxial feedthrough hole and the transmitting antenna are connected.

[0013] As an improvement of the above scheme, the electronic radiation test field also includes: a static current monitoring device and a network message monitoring device; the static current monitoring device and the network message monitoring device are arranged outside the radio wave darkroom and connected to the test vehicle through a test connection line.

[0014] As an improvement of the above solution, the step of obtaining the equipment failure message of the test vehicle includes:

[0015] Obtaining historical fault information of the test vehicle;

[0016] Analyze each historical fault information to obtain the content, generation time and corresponding ECU of the stop message corresponding to each historical fault information;

[0017] Among all messages generated by the ECU corresponding to the stop message, the ECU corresponding to the stop message stops sending the stop message corresponding to the content at the generation time of the stop message, so as to generate the equipment failure message of the test vehicle.

[0018] As an improvement of the above solution, the transmitting of the equipment fault message to the test vehicle includes:

[0019] The device fault message is transmitted to the diagnostic service of the test vehicle, so that the diagnostic service sends the device fault message according to a preset stop period; wherein the stop period is obtained through a stop period obtaining operation.

[0020] As an improvement of the above solution, the stop period acquisition operation includes:

[0021] Control the diagnostic service to send the device fault message according to the initial stop period, and obtain the device fault message sending feedback;

[0022] Sending feedback on the device fault message and making a judgment;

[0023] If a fault code is included, the current initial stop period is used as the final stop period;

[0024] If the fault code is not included, the current initial stop period is changed, and the changed initial stop period is used as the initial stop period of the next stop period acquisition operation, and the stop period acquisition operation is re-executed.

[0025] As an improvement of the above solution, the test result of generating the static current based on the fault code includes:

[0026] Obtain the time and type of generation of the fault code; wherein the types include pending confirmation and confirmed;

[0027] Determining the time when the fault code was generated;

[0028] If the generation time is before the first stop cycle and the generated type is a fault code to be confirmed, the current test fails;

[0029] If the generation time is after the first stop cycle and no fault code of the type to be confirmed is generated, the current test fails;

[0030] If the generation time is after the first stop cycle and the generated type is a fault code to be confirmed, the current test fails;

[0031] If the generation time is within the first stop cycle and the generated type is a confirmed fault code, the current test fails;

[0032] If the generation time is within the second stop period and no confirmed fault code is generated, the current test fails; wherein the second stop period and the first stop period are adjacent periods;

[0033] If the generation time is before the second stop cycle and the generated type is a confirmed fault code, the current test fails;

[0034] If the generation time is after the second stop cycle and the generated type is a confirmed fault code, the current test fails;

[0035] Otherwise, the current test succeeds and a test result of the quiescent current is generated.

[0036] Accordingly, an embodiment of the present invention further provides a vehicle static current testing device, comprising: a data acquisition module, a data transmission module and a data testing module;

[0037] The data acquisition module is used to acquire equipment fault messages of the test vehicle; wherein the test vehicle is arranged in an electronic radiation test field; the electronic radiation test field generates an electronic radiation field outside the test vehicle by a free field method;

[0038] The data transmission module is used to transmit the device fault message to the test vehicle, so that the test vehicle operates based on the device fault message in the electronic radiation field;

[0039] The data testing module is used to receive the fault code generated by the test vehicle and generate a test result of the static current based on the fault code.

[0040] Correspondingly, an embodiment of the present invention further provides a computer terminal device, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, a whole vehicle static current testing method as described in the present invention is implemented.

[0041] Correspondingly, an embodiment of the present invention further provides a computer-readable storage medium, which includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute a whole vehicle static current testing method as described in the present invention.

[0042] As can be seen from the above, the present invention has the following beneficial effects:

[0043] The present invention provides a method for testing the static current of a whole vehicle, and obtains a device fault message of the test vehicle; wherein the test vehicle is set in an electronic radiation test field; the electronic radiation test field generates an electronic radiation field outside the test vehicle by a free field method; the device fault message is transmitted to the test vehicle, so that the test vehicle runs in the electronic radiation field based on the device fault message; the fault code generated by the test vehicle is received, and a test result of the static current is generated based on the fault code. The present invention simulates various electromagnetic conditions outside the vehicle by setting an electronic radiation test field, and by setting different device fault messages, the static current test result under the real situation can be obtained under the electromagnetic conditions simulated outside the vehicle, which greatly improves the accuracy of the static current of the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a flow chart of a vehicle static current testing method provided by an embodiment of the present invention;

[0045] Figure 2 It is a structural schematic diagram of a vehicle static current testing device provided by an embodiment of the present invention;

[0046] Figure 3 This is a schematic diagram of the structure of a terminal device provided by an embodiment of the present invention;

[0047] Figure 4 is a schematic structural diagram of an electronic radiation test field provided by an embodiment of the present invention;

[0048] Figure 5 is a schematic diagram of test reference points of a test vehicle provided by an embodiment of the present invention;

[0049] Figure 6 is a schematic diagram of an equivalent circuit of an antenna provided by an embodiment of the present invention;

[0050] Figure 7 It is a flow chart of a vehicle static current testing method provided by another embodiment of the present invention. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] Embodiment 1

[0053] See also Figure 1 , Figure 1 is a flow chart of a method X provided by an embodiment of the present invention, such as Figure 1 As shown, this embodiment includes step 101 to step 10X, and each step is specifically as follows:

[0054] Step 101: Acquire a device fault message of a test vehicle; wherein the test vehicle is arranged in an electron radiation test field; the electron radiation test field generates an electron radiation field outside the test vehicle by a free field method.

[0055] In this embodiment, obtaining the equipment failure message of the test vehicle includes:

[0056] Obtaining historical fault information of the test vehicle;

[0057] Analyze each historical fault information to obtain the content, generation time and corresponding ECU of the stop message corresponding to each historical fault information;

[0058] Among all messages generated by the ECU corresponding to the stop message, the ECU corresponding to the stop message stops sending the stop message corresponding to the content at the generation time of the stop message, so as to generate the equipment failure message of the test vehicle.

[0059] In a specific embodiment, before testing a certain fault code, it is necessary to clearly identify which message of which ECU on the bus the message pointed to by the fault code comes from, add the corresponding ECU and its message in the test software, set the diagnostic service and each signal content in the message that the corresponding ECU needs to use, so that the corresponding value in the message signal can be changed later to achieve the purpose of simulating different faults. After all diagnostic services and corresponding device fault messages are added and set, you can try to simulate sending. If the device fault message can be read on the bus, the database editing is successful.

[0060] It should be noted that since the messages sent by the ECU on the vehicle bus will basically not have any faults, it is necessary to stop the messages sent by the relevant ECU. The message can be stopped by pulling out the ECU fuse or connector, but since the bus message cycle is in milliseconds, it is impossible to accurately control the time of stopping the message. Moreover, some ECUs are hidden under the vehicle carpet, armrest box, etc., and pulling out their connectors requires destructive operations on the vehicle, which will cause great losses in manpower and financial resources. Therefore, the diagnostic database edited in advance is used to stop all messages of a certain ECU or the entire vehicle through diagnostic services, which saves time and effort. After the message is stopped, it is necessary to continue to use the edited DBC database to simulate the sending of the stopped message, so that the content and cycle of the message sending can be accurately controlled through the test software.

[0061] In a specific embodiment, the free-field method uses the free-field TLS stripline method. The free-field method is a common method for automotive electronic radiation immunity testing: the device under test is exposed to the radiated electromagnetic field generated by the antenna for testing. The test level is generally determined by the performance of the device under test. The current maximum field strength can reach 100V / m. For better explanation, the free-field immunity test level of the whole vehicle refers to the ECE R10 standard as shown in Table 1 below:

[0062] Table 1

[0063] Frequency band(MHz) Level (V / m) Modulation 1.5～30 100 CW, AM 80% 30～1000 70 CW, AM 80% 800～2000 30 CW, P.M.

[0064] Step 102: Transmit the device fault message to a test vehicle, so that the test vehicle operates in the electronic radiation field based on the device fault message.

[0065] In this embodiment, the electronic radiation test field includes: an anechoic chamber, a radio frequency signal generator, a power amplifier, a dual directional coupler, a power meter, a coaxial feedthrough hole and a transmitting antenna;

[0066] The coaxial feedthrough hole is arranged on the side of the anechoic chamber, the anechoic chamber, the radio frequency signal generator, the power amplifier, the dual directional coupler and the power meter are arranged outside the anechoic chamber, and the transmitting antenna is arranged inside the anechoic chamber;

[0067] The radio frequency signal generator is connected to the power amplifier, the power amplifier is connected to the dual directional coupler, the dual directional coupler is connected to the power meter, and the dual directional coupler, the coaxial feedthrough hole and the transmitting antenna are connected.

[0068] In this embodiment, the electronic radiation test field further includes: a static current monitoring device and a network message monitoring device; the static current monitoring device and the network message monitoring device are arranged outside the anechoic chamber and connected to the test vehicle through a test connection line.

[0069] It should be noted that there are many components on the vehicle that may generate electromagnetic interference. After the test vehicle is turned on, the driving cycle requirements are met artificially by starting the vehicle, stepping on the accelerator, and driving. After turning on the long-time load electrical appliances of the vehicle, the vehicle is powered off and put into sleep mode after turning off all electrical appliances. At the same time, network message monitoring equipment and vehicle static current monitoring equipment are used to monitor the vehicle sleep mode and network message sending and receiving. All components that may generate electromagnetic interference should be tested.

[0070] In a specific embodiment, to better illustrate the electron radiation test field, see Figure 4 , including: an anechoic chamber 1, a radio frequency signal generator 2, a power amplifier 3, a dual directional coupler 4, a power meter 5, a coaxial feedthrough hole 6, a transmitting antenna 7, a vehicle reference point 8, a static current monitoring device 9, and a network message monitoring device 10.

[0071] To better explain the selection of test points for the test vehicle, see Figure 5 , the distance between the transmitting antenna and the reference point of the vehicle is 2m, and the 4-probe method is used to calibrate the field strength. The test frequency band for free-field immunity is 1.5MHz~2GHz. In the 1.5MHz~30MHz band, the stripline method is used for testing. In the 30MHz~2GHz band, the antenna needs to be arranged in front and rear of the vehicle, that is, position 1 and position 5, and vertical polarization is used for testing.

[0072] Preferably, see Figure 6 , Figure 6It is the equivalent circuit of the transmitting antenna. The transient electromagnetic induction receiving antenna is an inductor coil. Its internal resistance, self-inductance and distributed capacitance constitute an oscillating current. Its equivalent circuit model is shown in the figure below, where: R represents the internal resistance of the receiving coil, which is mainly affected by the material, length and wire diameter of the coil, L represents the self-inductance of the selected material, C represents the distributed capacitance, and e represents the signal source.

[0073] According to the circuit principle, the output voltage of the coil can be obtained

[0074] Where: ω is the angular frequency, ω=2πfω=2πf, e(jω)=jωμ 0 nS;

[0075]

[0076] Where: f is the frequency, μ0 is the material magnetic permeability, n is the number of coil turns, and S is the coil interface area;

[0077]

[0078] Step 103: Receive a fault code generated by the test vehicle, and generate a test result of static current based on the fault code.

[0079] In this embodiment, the transmitting the device fault message to the test vehicle includes:

[0080] The device fault message is transmitted to the diagnostic service of the test vehicle, so that the diagnostic service sends the device fault message according to a preset stop period; wherein the stop period is obtained through a stop period obtaining operation.

[0081] In this embodiment, the stop period acquisition operation includes:

[0082] Control the diagnostic service to send the device fault message according to the initial stop period, and obtain the device fault message sending feedback;

[0083] Sending feedback on the device fault message and making a judgment;

[0084] If a fault code is included, the current initial stop period is used as the final stop period;

[0085] If the fault code is not included, the current initial stop period is changed, and the changed initial stop period is used as the initial stop period of the next stop period acquisition operation, and the stop period acquisition operation is re-executed.

[0086] In a specific embodiment, from the time when the relevant ECU message is stopped after the vehicle is powered on (i.e., the device failure message of the present invention is sent) to the time when the device simulates the message that is stopped, the ECU under test may have recorded some fault codes. Therefore, in order to eliminate the interference of other factors in the stage before the test starts, after the simulated message is sent normally, the fault code clearing operation is first performed on the ECU under test, and the DTC operation is read to ensure that no fault code to be tested appears before the test. So far, the first operation cycle officially begins. After simulating the sending of relevant messages for a certain period of time, according to the generation conditions of the fault code to be tested described in the DTC list, the relevant messages are accurately stopped for a certain period and then normal sending is resumed. By reading the fault code operation, it is determined whether the pending fault code has been generated. If it has been generated, the current operation cycle can be ended. If it has not been generated, the period of stopping the message is fine-tuned until the pending fault code is generated.

[0087] The conditions for generating the fault code to be tested are shown in Table 2:

[0088] Table 2

[0089] DUT monitor Require multimedia Display fault, CAN network Normal function during and after testing ECU Fault lights, fault codes, CAN network Normal function during and after testing ESC Fault lights, fault codes, CAN network Normal function during and after testing meter Display fault, CAN network Normal function during and after testing Air conditioning controller Display panel, CAN network Normal function during and after testing BCM CAN Network Normal function during and after testing TCM CAN Network Normal function during and after testing Accelerator pedal Engine speed Normal function during and after testing

[0090] In the second operation cycle, the same operation as the first operation cycle is performed until a confirmed DTC is generated. At this point, the test is completed, and the test result is determined to be qualified according to the specific situation.

[0091] In this embodiment, the test result of generating the static current based on the fault code includes:

[0092] Obtain the time and type of generation of the fault code; wherein the types include pending confirmation and confirmed;

[0093] Determining the time when the fault code was generated;

[0094] If the generation time is before the first stop cycle and the generated type is a fault code to be confirmed, the current test fails;

[0095] If the generation time is after the first stop cycle and no fault code of the type to be confirmed is generated, the current test fails;

[0096] If the generation time is after the first stop cycle and the generated type is a fault code to be confirmed, the current test fails;

[0097] If the generation time is within the first stop cycle and the generated type is a confirmed fault code, the current test fails;

[0098] If the generation time is within the second stop period and no confirmed fault code is generated, the current test fails; wherein the second stop period and the first stop period are adjacent periods;

[0099] If the generation time is before the second stop cycle and the generated type is a confirmed fault code, the current test fails;

[0100] If the generation time is after the second stop cycle and the generated type is a confirmed fault code, the current test fails;

[0101] Otherwise, the current test succeeds and a test result of the quiescent current is generated.

[0102] It should be noted that since the final result of the test case is determined based on the condition that the corresponding fault code is read, if the fault code is not read or the fault code is read before the condition is met, the test is considered unqualified. Various unqualified situations have been taken into account in the test case to ensure the absolute accuracy of the test results. Specifically, the following situations are included:

[0103] A. The fault code to be tested has appeared before the test has started;

[0104] B. The first operation cycle cannot generate a pending fault code;

[0105] C. The first operation cycle has not yet reached the fault code generation conditions but the pending fault code has appeared;

[0106] D. The pending fault code appears only when the first operation cycle exceeds the fault code generation condition;

[0107] E. A confirmed fault code has been generated in the first operation cycle;

[0108] F. The second operation cycle cannot generate a confirmed fault code;

[0109] G. The confirmed fault code is generated before the fault code generation condition is met in the second operation cycle;

[0110] H. The confirmed fault code appears only when the second operation cycle exceeds the fault code generation conditions.

[0111] In a specific embodiment, see Figure 7 , a flow chart of another vehicle static current test method is provided.

[0112] It can be understood that the present invention can avoid the difficulty of manually plugging and unplugging the ECU connector of the actual vehicle, and can easily realize the sending and stopping of messages; at the same time, it can simulate the sending of real vehicle data according to actual needs, without sticking to the state of the actual vehicle itself; in addition, it automatically stops sending messages for a certain period to achieve the effect of accurately simulating the fault state, which makes up for the shortcomings of emission-related network fault code testing, provides evaluation for fault code strategies, and provides troubleshooting direction and data support for after-sales fault cases.

[0113] See also Figure 2 , Figure 2 2 is a schematic diagram of the structure of a vehicle static current test device provided by an embodiment of the present invention, comprising: a data acquisition module 201, a data transmission module 202 and a data test module 203;

[0114] The data acquisition module is used to acquire equipment fault messages of the test vehicle; wherein the test vehicle is arranged in an electronic radiation test field; the electronic radiation test field generates an electronic radiation field outside the test vehicle by a free field method;

[0115] The data transmission module is used to transmit the device fault message to the test vehicle, so that the test vehicle operates based on the device fault message in the electronic radiation field;

[0116] The data testing module is used to receive the fault code generated by the test vehicle and generate a test result of the static current based on the fault code.

[0117] It can be understood that the above-mentioned system item embodiments correspond to the method item embodiments of the present invention, and can implement the whole vehicle static current testing method provided by any one of the above-mentioned method item embodiments of the present invention.

[0118] This embodiment obtains the equipment fault message of the test vehicle; wherein the test vehicle is set in an electronic radiation test field; the electronic radiation test field generates an electronic radiation field outside the test vehicle through a free field method; transmits the equipment fault message to the test vehicle so that the test vehicle runs based on the equipment fault message in the electronic radiation field; receives the fault code generated by the test vehicle, and generates a test result of the static current based on the fault code. The present invention simulates various electromagnetic conditions outside the vehicle by setting an electronic radiation test field, and by setting different equipment fault messages, it is possible to obtain the static current test result under the real situation under the electromagnetic conditions simulated outside the vehicle, thereby greatly improving the accuracy of the static current of the vehicle.

[0119] Embodiment 2

[0120] See also Figure 3 , Figure 3 It is a schematic diagram of the structure of a terminal device provided in one embodiment of the present invention.

[0121] A terminal device of this embodiment includes: a processor 301, a memory 302, and a computer program stored in the memory 302 and executable on the processor 301. When the processor 301 executes the computer program, the steps of the above-mentioned vehicle static current test method in the embodiment are implemented, for example: Figure 1 Alternatively, when the processor executes the computer program, the functions of each module in the above-mentioned device embodiments are realized, for example: Figure 2 All modules of the vehicle static current test device are shown.

[0122] In addition, an embodiment of the present invention further provides a computer-readable storage medium, which includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the whole vehicle static current test method described in any of the above embodiments.

[0123] Those skilled in the art will understand that the schematic diagram is merely an example of a terminal device and does not constitute a limitation on the terminal device. The terminal device may include more or fewer components than shown in the diagram, or a combination of certain components, or different components. For example, the terminal device may also include input and output devices, network access devices, buses, etc.

[0124] The processor 301 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc. The processor 301 is the control center of the terminal device, and uses various interfaces and lines to connect various parts of the entire terminal device.

[0125] The memory 302 can be used to store the computer program and / or module. The processor 301 implements various functions of the terminal device by running or executing the computer program and / or module stored in the memory and calling the data stored in the memory 302. The memory 302 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0126] Wherein, if the module / unit integrated in the terminal device is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Wherein, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium, etc.

[0127] It should be noted that the device embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, in the accompanying drawings of the device embodiments provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, which may be specifically implemented as one or more communication buses or signal lines. A person of ordinary skill in the art may understand and implement it without paying any creative effort.

[0128] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A vehicle static current testing method, characterized in that: include: Acquiring a device fault message of a test vehicle; wherein the test vehicle is arranged in an electronic radiation test field; the electronic radiation test field generates an electronic radiation field outside the test vehicle by a free field method; transmitting the device fault message to a test vehicle so that the test vehicle operates in the electronic radiation field based on the device fault message; A fault code generated by the test vehicle is received, and a test result of a static current is generated based on the fault code.

2. The vehicle static current testing method according to claim 1, characterized in that: The electronic radiation test field comprises: an anechoic chamber, a radio frequency signal generator, a power amplifier, a dual directional coupler, a power meter, a coaxial feedthrough hole and a transmitting antenna; The coaxial feedthrough hole is arranged on the side of the anechoic chamber, the anechoic chamber, the radio frequency signal generator, the power amplifier, the dual directional coupler and the power meter are arranged outside the anechoic chamber, and the transmitting antenna is arranged inside the anechoic chamber; The radio frequency signal generator is connected to the power amplifier, the power amplifier is connected to the dual directional coupler, the dual directional coupler is connected to the power meter, and the dual directional coupler, the coaxial feedthrough hole and the transmitting antenna are connected.

3. The vehicle static current testing method according to claim 2, characterized in that: The electronic radiation test field also includes: a static current monitoring device and a network message monitoring device; the static current monitoring device and the network message monitoring device are arranged outside the anechoic chamber and connected to the test vehicle through a test connection line.

4. The vehicle static current testing method according to claim 3, characterized in that: The step of obtaining the equipment failure message of the test vehicle includes: Obtaining historical fault information of the test vehicle; Analyze each historical fault information to obtain the content, generation time and corresponding ECU of the stop message corresponding to each historical fault information; Among all messages generated by the ECU corresponding to the stop message, the ECU corresponding to the stop message stops sending the stop message corresponding to the content at the generation time of the stop message, so as to generate the equipment failure message of the test vehicle.

5. The vehicle static current testing method according to claim 3, characterized in that: The transmitting the device fault message to the test vehicle includes: The device fault message is transmitted to the diagnostic service of the test vehicle, so that the diagnostic service sends the device fault message according to a preset stop period; wherein the stop period is obtained through a stop period obtaining operation.

6. The vehicle static current testing method according to claim 5, characterized in that: The stop period acquisition operation includes: Control the diagnostic service to send the device fault message according to the initial stop period, and obtain the device fault message sending feedback; Sending feedback on the device fault message and making a judgment; If a fault code is included, the current initial stop period is used as the final stop period; If the fault code is not included, the current initial stop period is changed, and the changed initial stop period is used as the initial stop period of the next stop period acquisition operation, and the stop period acquisition operation is re-executed.

7. The vehicle static current testing method according to claim 6, characterized in that: The test result of generating the static current based on the fault code includes: Obtain the time and type of generation of the fault code; wherein the types include pending confirmation and confirmed; Determining the time when the fault code was generated; If the generation time is before the first stop cycle and the generated type is a fault code to be confirmed, the current test fails; If the generation time is after the first stop cycle and no fault code of the type to be confirmed is generated, the current test fails; If the generation time is after the first stop cycle and the generated type is a fault code to be confirmed, the current test fails; If the generation time is within the first stop cycle and the generated type is a confirmed fault code, the current test fails; If the generation time is within the second stop period and no confirmed fault code is generated, the current test fails; wherein the second stop period and the first stop period are adjacent periods; If the generation time is before the second stop cycle and the generated type is a confirmed fault code, the current test fails; If the generation time is after the second stop cycle and the generated type is a confirmed fault code, the current test fails; Otherwise, the current test succeeds and a test result of the quiescent current is generated.

8. A vehicle static current test device, characterized in that: include: Data acquisition module, data transmission module and data testing module; The data acquisition module is used to acquire the equipment fault message of the test vehicle; wherein the test vehicle is arranged in an electronic radiation test field; the electronic radiation test field generates an electronic radiation field outside the test vehicle by a free field method; The data transmission module is used to transmit the device fault message to the test vehicle, so that the test vehicle operates based on the device fault message in the electronic radiation field; The data testing module is used to receive the fault code generated by the test vehicle and generate a test result of the static current based on the fault code.

9. A computer terminal device, characterized in that: It includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, and when the processor executes the computer program, it implements a whole vehicle static current testing method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute a vehicle static current testing method as described in any one of claims 1 to 7.

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