Electromagnetic compatibility test method, system, device and medium for vehicle positioning function

Abstract

The present application discloses an electromagnetic compatibility test method, system, device and medium for the vehicle positioning function, the method comprising: when the positioning module of the test vehicle and the environment in which it is located meet the test conditions, controlling the positioning simulation device to generate a positioning signal and send it to the positioning module to activate the positioning module; determining the test type and obtaining the test environment configuration parameters of the positioning module within a preset frequency range according to the test type; according to the test environment configuration parameters, controlling the electromagnetic interference generating device to emit electromagnetic waves to the positioning module to generate electromagnetic interference to the positioning module; performing an electromagnetic compatibility test on the positioning module, and monitoring the attribute parameter information of the positioning module, and determining the test result of the positioning module according to the attribute parameter information. The scheme of the present application more comprehensively considers the ability of the positioning function of the whole vehicle or the positioning module to resist electromagnetic interference, facilitates the timely discovery of potential faults related to electromagnetic compatibility in the positioning module, and increases the overall electromagnetic safety performance of the vehicle.

Description

Technical Field

[0001] The present application relates to the field of electromagnetic compatibility testing technology, and in particular to an electromagnetic compatibility testing method, system, device and medium for a vehicle positioning function. Background Art

[0002] With the continuous development of automobile technology, vehicle assisted driving systems have been increasingly used in people's daily lives because they can reduce traffic jams and improve driver safety. In the application of assisted driving systems, a high-precision positioning system based on vehicle real-time differential positioning (Real-Time Kinematic, RTK) technology is usually used to achieve centimeter-level positioning accuracy by real-time processing of satellite signals.

[0003] At present, high-precision positioning vehicles based on RTK need to meet three requirements: first, data from base stations can be received through data links; second, GPS data can be collected; and third, differential observations can be quickly processed. The first and second points are very susceptible to the influence of the external electromagnetic environment during the processing. Therefore, in order to improve the safety of vehicle use and enable the vehicle to maintain high-precision positioning in all scenarios, how to conduct electromagnetic compatibility testing on the vehicle's positioning function is an urgent problem to be solved. Summary of the invention

[0004] The purpose of this application is to provide an electromagnetic compatibility testing method, system, device and medium for the vehicle positioning function, which can more comprehensively consider the ability of the positioning function of the entire vehicle or the positioning module to resist electromagnetic interference, facilitate timely discovery of potential faults related to electromagnetic compatibility in the positioning module, and increase the overall electromagnetic safety performance of the vehicle.

[0005] To achieve the above objectives, this application provides the following solutions:

[0006] In a first aspect, the present application provides an electromagnetic compatibility test method for a vehicle positioning function, comprising:

[0007] When the positioning module of the test vehicle and the environment in which it is located meet the test conditions, the positioning simulation device is controlled to generate a positioning signal and send it to the positioning module to activate the positioning module;

[0008] Determine the test type and obtain the test environment configuration parameters of the positioning module within a preset frequency range according to the test type;

[0009] According to the test environment configuration parameters, controlling the electromagnetic interference generating device to emit electromagnetic waves to the positioning module to generate electromagnetic interference to the positioning module;

[0010] An electromagnetic compatibility test is performed on the positioning module, and attribute parameter information of the positioning module is monitored, and a test result of the positioning module is determined according to the attribute parameter information.

[0011] Optionally, the positioning simulation device includes a communication base station and a satellite signal simulator; the controlling the positioning simulation device to generate a positioning signal and send it to the positioning module to activate the positioning module specifically includes:

[0012] When the positioning module sends a registration request to the communication base station, controlling the communication base station to allocate a transmission address to the positioning module;

[0013] The satellite signal simulator is controlled to generate a positioning signal and sent to the positioning module according to the transmission address to activate the positioning module.

[0014] Optionally, obtaining test environment configuration parameters of the positioning module within a preset frequency range according to the test type specifically includes:

[0015] When the test type is a vehicle test, the test environment configuration parameters include at least one of the following: test level, reference point, antenna position, antenna polarization mode, scanning step, modulation mode, and dwell time;

[0016] When the test type is a component test, the test environment configuration parameters include at least one of the following: test level, anti-interference signal type, discharge type, and test standard parameters.

[0017] Optionally, when the test type is a component test, the positioning module is subjected to an electromagnetic compatibility test, including at least one of the following: an immunity test on the electromagnetic radiation of the positioning module, an electrical transient conduction immunity test along the power line, an electrical transient immunity test on wires other than the power line through capacitive and inductive coupling, and an electrical immunity test caused by electrostatic discharge.

[0018] Optionally, the attribute parameter information includes: a positioning signal; and determining the test result of the positioning module according to the attribute parameter information specifically includes:

[0019] Monitoring whether the positioning signal of the test vehicle meets the preset signal requirements;

[0020] When the preset signal requirement is not met, it indicates that the electromagnetic compatibility test of the positioning module has failed;

[0021] When the preset signal requirements are met, it indicates that the electromagnetic compatibility test of the positioning module has passed.

[0022] Optionally, the attribute parameter information includes: location information, speed information and time information of the test vehicle;

[0023] Determining the test result of the positioning module according to the attribute parameter information specifically includes:

[0024] Comparing the position information, speed information and time information with preset attribute parameters respectively to obtain comparison results;

[0025] When the comparison result indicates that the comparison is inconsistent, it indicates that the electromagnetic compatibility test of the positioning module fails;

[0026] When the comparison result indicates that the comparison is consistent, it indicates that the electromagnetic compatibility test of the positioning module has passed.

[0027] In a second aspect, the present application provides an electromagnetic compatibility test system for a vehicle positioning function, comprising:

[0028] An electromagnetic interference generating device, a main control device, and a positioning simulation device; the main control device establishes communication connections with the electromagnetic interference generating device and the positioning simulation device respectively;

[0029] The electromagnetic interference generating device is used to: emit electromagnetic waves to the positioning module to generate electromagnetic interference to the positioning module;

[0030] The main control device is used to: when the positioning module of the test vehicle and the environment in which it is located meet the test conditions, control the positioning simulation device to generate a positioning signal and send it to the positioning module; determine the test type and obtain the test environment configuration parameters of the positioning module within a preset frequency range according to the test type; control the electromagnetic interference generating device to emit electromagnetic waves to the positioning module according to the test environment configuration parameters; perform an electromagnetic compatibility test on the positioning module, monitor the attribute parameter information of the positioning module, and determine the test result of the positioning module according to the attribute parameter information.

[0031] The positioning simulation device is used to generate a positioning signal and send it to the positioning module to activate the positioning module.

[0032] In a third aspect, the present application provides a main control device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the electromagnetic compatibility test method for the vehicle positioning function described in any one of the above.

[0033] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the electromagnetic compatibility testing method for a vehicle positioning function as described in any one of the above.

[0034] According to the specific embodiments provided in this application, this application discloses the following technical effects:

[0035] The present application provides an electromagnetic compatibility test method, system, device and medium for a vehicle positioning function. When the positioning module of the test vehicle and the environment in which it is located meet the test conditions, a positioning simulation device is controlled to generate a positioning signal and send it to the positioning module to activate the positioning module. Then, the test type is determined and the test environment configuration parameters of the positioning module within a preset frequency range are obtained according to the test type. According to the test environment configuration parameters, an electromagnetic interference generating device is controlled to emit electromagnetic waves to the positioning module to generate electromagnetic interference to the positioning module, and an electromagnetic compatibility test is performed on the positioning module. The attribute parameter information of the positioning module is monitored, and the test result of the positioning module is determined according to the attribute parameter information. Compared with the prior art, the technical solution of the present application introduces a positioning signal to the positioning module through a positioning simulation device, so that the positioning module can be automatically activated under test conditions, and the test environment configuration parameters are comprehensively considered. By controlling the electromagnetic interference generating device, an electromagnetic environment that is more in line with the test requirements is targetedly constructed for the positioning module, and then the electromagnetic compatibility test of the positioning module is accurately performed under the electromagnetic environment, and the electromagnetic compatibility of the positioning module is evaluated according to the attribute parameter information. It can more comprehensively consider the ability of the positioning function of the whole vehicle or positioning module to resist electromagnetic interference, facilitate timely discovery of potential faults related to electromagnetic compatibility in the positioning module, increase the overall electromagnetic safety performance of the vehicle, and improve the safety of intelligent connected vehicles and autonomous driving vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 This is a schematic diagram of the structure of an electromagnetic compatibility test system for a vehicle positioning function in one embodiment of the present application;

[0038] Figure 2 This is a structural schematic diagram of an electromagnetic compatibility test system for a vehicle positioning function in another embodiment of the present application;

[0039] Figure 3 A schematic flow chart of an electromagnetic compatibility test method for a vehicle positioning function provided in one embodiment of the present application;

[0040] Figure 4 A schematic diagram of the structure of the connection between a satellite signal simulator, a positioning module and a communication base station provided in an embodiment of the present application;

[0041] Figure 5 A schematic diagram of the structure of an electromagnetic compatibility test system corresponding to the component test provided in one embodiment of the present application;

[0042] Figure 6 A schematic diagram of a flow chart of a method for determining an electromagnetic compatibility test result of a positioning module provided in an embodiment of the present application;

[0043] Figure 7 A schematic diagram of a flow chart of a method for determining an electromagnetic compatibility test result of a positioning module provided in an embodiment of the present application;

[0044] Figure 8 A schematic diagram of a connection structure for communication between a main control device and a positioning module provided in one embodiment of the present application;

[0045] Fig. 9 A schematic diagram of functional modules of an electromagnetic compatibility testing device for a vehicle positioning function provided in one embodiment of the present application;

[0046] Fig.10 A schematic diagram of the structure of a computer device provided in one embodiment of the present application.

[0047] Description of reference numerals:

[0048] Electromagnetic interference generating device-10; test cavity-11; signal generator-12; power amplifier-13; coupler-14; radio frequency antenna-15; coaxial feedthrough module-16; power detection module-17; vehicle reference point-18; main control device-20; positioning simulation device-30; satellite signal simulator-31; communication base station-32; first transmitting antenna-33; second transmitting antenna-34; support-40; positioning module-41; grounding copper tape-42; low-voltage power supply-43; low-voltage power supply network-44; simulated load-45; actual load-46; reference ground plane-47. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0050] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0051] The electromagnetic compatibility test system of a vehicle positioning module provided in the embodiment of the present application can be found in Figure 1 The electromagnetic compatibility test system of the vehicle positioning module includes an electromagnetic interference generating device 10 , a main control device 20 , and a positioning simulation device 30 .

[0052] The electromagnetic interference generating device 10 is used to emit electromagnetic waves to the positioning module to generate electromagnetic interference to the positioning module 41. The main control device 20 is used to control the positioning simulation device 30 to generate a positioning signal and send it to the positioning module 41 when the positioning module 41 of the test vehicle and the environment in which it is located meet the test conditions; determine the test type and obtain the test environment configuration parameters of the positioning module 41 within a preset frequency range according to the test type; control the electromagnetic interference generating device to emit electromagnetic waves to the positioning module 41 according to the test environment configuration parameters; perform electromagnetic compatibility testing on the positioning module, monitor the attribute parameter information of the positioning module 41, and determine the test result of the positioning module 41 according to the attribute parameter information. The positioning simulation device 30 is used to: generate a positioning signal and send it to the positioning module 41 to activate the positioning module 41.

[0053] Specifically, the positioning module 41 may be a real-time differential positioning RTK module, which is a method that can obtain centimeter-level positioning accuracy in real time in the wild. The electromagnetic interference generating device 10 is used to provide an electromagnetic compatibility test environment for the positioning module of the test vehicle, and the electromagnetic compatibility test environment may include electromagnetic waves, which are used to generate electromagnetic interference to the positioning module of the test vehicle.

[0054] The main control device 20 has data control and data processing functions, and may include a computer device, which may include a terminal for establishing a communication connection between a server and a server. Optionally, the server may be a single server, or a server cluster or distributed system composed of several servers, or a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, content delivery networks (CDN), and big data and artificial intelligence platforms. An operating system may be running on the terminal, which may include but is not limited to Android systems, IOS systems, Linux systems, Unix, Windows systems, etc., and may also include a user interface (UI) layer, which may provide data display to the outside through the UI layer. In addition, a first control instruction may be sent to the positioning simulation device 30 based on an application programming interface (API), so that the positioning simulation device 30 receives and responds to the first control instruction and performs a corresponding operation; and is also used to send a second control instruction to the electromagnetic interference generating device 10, so that the electromagnetic interference generating device 10 receives and responds to the second control instruction and performs a corresponding operation.

[0055] Among them, the server and terminal can be equipped with a microprocessor (MCU), memory (ROM, RAM), input and output interface (I / O), analog-to-digital converter (A / D), and large-scale integrated circuits such as shaping and driving.

[0056] In one embodiment, see Figure 2 As shown, the electromagnetic interference generating device includes: a test cavity 11, a signal generator 12, a power amplifier 13, a coupler 14, a radio frequency antenna 15, a coaxial feedthrough module 16 and a power detection module 17; the signal generator 12, the power amplifier 13, the coupler 14, the coaxial feedthrough module 16 and the power detection module 17 are all located outside the test cavity 11, and the radio frequency antenna 15 is located inside the test cavity 11; the coupler 14 is electrically connected to the power amplifier 13, the coaxial feedthrough module 16 and the power detection module 17 respectively, and the power amplifier 13 is also electrically connected to the signal generator 12.

[0057] The signal generator 12 is used to generate an initial RF signal and send it to the power amplifier 13; the power amplifier 13 is used to amplify the initial RF signal to obtain an amplified RF signal and send it to the coupler 14; the coupler 14 is used to transmit the amplified RF signal to the coaxial feedthrough module 16; the power detection module 17 is used to detect the forward power and the directional power to determine whether the amplified RF signal is transmitted to the coaxial feedthrough module 16; the coaxial feedthrough module 16 is used to transmit the amplified RF signal to the RF antenna 15; the RF antenna 15 is used to transmit the amplified RF signal to the positioning module 41 to generate electromagnetic interference to the positioning module 41. The positioning module is located in the test vehicle.

[0058] Specifically, the above-mentioned test chamber 11 can be a darkroom, which can be understood as a shielded chamber with a large electrical size and a highly conductive reflective wall. One or several mechanical stirrers or tuners are usually installed in the shielded chamber. The boundary conditions of the chamber are changed by the rotation of the mechanical stirrer, thereby forming a statistically uniform, isotropic and randomly polarized electromagnetic environment in the modified chamber.

[0059] The above-mentioned coupler 14 can be a bidirectional coupler, which is used for signal distribution, merging, power extraction and control, transmission loss attenuation and directional coupling. The bidirectional coupler can distribute the input signal to multiple output ports, or merge the input signal into one output signal. This function plays the role of signal distribution, merging and combination; the bidirectional coupler extracts a part of the function from the main signal route by coupling a part of the input signal to an additional port, so that it can be used for power detection, power control and feedback. The bidirectional coupler can be composed of two transmission lines, respectively called the main line and the branch line. The main line is used to transmit the input signal, and the branch line is used to transmit the output signal. The two transmission lines are coupled to each other through electromagnetic induction and current conduction. Its working principle is based on the principle of electromagnetic induction and current conduction. Through the working principle of the bidirectional coupler, the input signal can be transmitted between the main line and the branch line, and two-way communication can be achieved.

[0060] The coaxial feedthrough module 16 is an electronic component mainly used to transmit coaxial signals, has good shielding performance, can reduce the influence of external electromagnetic fields, and reduce losses during signal transmission. It also has the advantages of low noise, high bandwidth and high power transmission capability, and is suitable for a variety of application scenarios.

[0061] The power detection module 17 is used to detect the forward power and the directional power, and determine whether the amplified RF signal is transmitted to the coaxial feedthrough module 16 , so that the amplified RF signal is transmitted to the RF antenna 15 through the coaxial feedthrough module 16 .

[0062] The above-mentioned RF antenna 15 is used to receive the amplified RF signal and transmit it to the positioning module. It can be a non-directional omnidirectional antenna or a directional directional antenna. Among them, an omnidirectional antenna refers to a 360° uniform radiation on the horizontal directional diagram; a directional antenna refers to a radiation within a certain angle range on the horizontal directional diagram. The directional antenna is generally suitable for environments with long communication distances, small coverage areas, large target density, and high frequency utilization. Optionally, the test vehicle can be used as the vehicle reference point 18, and the distance between the RF antenna 15 and the test vehicle can be at an angle of α with the horizontal plane of the vehicle reference point 18. The distance between the RF antenna 15 and the test reference line corresponding to the vehicle reference point 18 can be greater than or equal to 2m, and the vertical distance between the RF antenna 15 and the test vehicle can be greater than or equal to 0.25m.

[0063] In one embodiment, the positioning simulation device 30 includes: a satellite signal simulator 31, a communication base station 32, a first transmitting antenna 33 and a second transmitting antenna 34; the satellite signal simulator 31 is electrically connected to the first transmitting antenna 33 and the communication base station 32 respectively, and the communication base station 32 is also electrically connected to the second transmitting antenna 34, and the satellite signal simulator 31 and the communication base station 32 are both located outside the test cavity 11; the first transmitting antenna 33 and the second transmitting antenna 34 are both located inside the test cavity.

[0064] The satellite signal simulator 31 is used to simulate the attitude of the satellite, generate a positioning signal and send it to the first transmitting antenna 33, and to generate a satellite signal and send it to the communication base station 32; the first transmitting antenna 33 is used to send the positioning signal to the positioning module 41; the communication base station 32 is used to receive the satellite signal sent by the satellite signal simulator 31, generate differential data according to the satellite signal and send it to the second transmitting antenna 34; the second transmitting antenna 34 is used to send the differential data to the positioning module 41.

[0065] It should be noted that the above-mentioned satellite signal simulator 31 simulates the satellite's flight attitude, orbital dynamics, and the satellite full-frame telemetry information flow change process of the measurement and control arc segment through two parts: a simulated transponder and an attitude orbit simulator. The satellite signal simulator 31 is a device that can simulate the performance of the onboard measurement and control subsystem. It can be composed of two parts: a simulated transponder and an attitude simulator. The simulated transponder includes a receiver (carrier tuning), a transmitter (carrier modulation), a squelch control circuit, a ranging forwarder, a telemetry terminal (including telemetry parameter simulation), a remote control terminal, etc. The attitude orbit simulator is composed of a simulation computer and an input / output interface circuit, etc., and can simulate the attitude and orbit operation of the satellite under the control of the attitude control system. The satellite signal simulator can be SMBV 100B.

[0066] The communication base station 32 can be a base station simulator, an interface device for terminal equipment to access the Internet, and a form of radio station, which refers to a radio transceiver station that transmits information between the vehicle-mounted terminal through the mobile communication exchange center in a certain radio coverage area. The communication base station can be CMW500, for example. The first transmitting antenna 33 and the second transmitting antenna 34 can be non-directional omnidirectional antennas or directional directional antennas.

[0067] A corresponding communication protocol is established between the satellite signal simulator 31 and the communication base station 32. The communication protocol may be, for example, RTCM3.3, which describes a protocol for differential correction data transmission, allowing the receiver to calculate its position with higher accuracy. The satellite signal simulator 31 may be connected to the communication base station 32 via a LAN Ethernet interface. The positioning module 41 may be an RTK high-precision positioning function module of the test vehicle.

[0068] It is understandable that the Global Navigation Satellite System (GNSS) is the same name for individual satellite navigation and positioning systems such as Beidou, GPS, GLONASS, and Galileo. It can also refer to their enhanced systems, and also to the added mixture of all these satellite navigation and positioning systems and their enhanced systems. GNSS is a star-level radio navigation system that uses artificial satellites as navigation stations, providing all-weather, high-precision position, speed and time information for various carriers on land, sea, air and space around the world.

[0069] Exemplarily, taking the satellite signal simulator as 31SMBV 100B, the communication base station as CMW500, and the positioning module as the vehicle high-precision positioning function module TBOX of the test vehicle as an example, TBOX is respectively connected to the satellite signal simulator 31SMBV 100B and the communication base station CMW500, and the satellite signal simulator 31SMBV 100B is connected to the communication base station CMW500. A communication connection can be established between the satellite signal simulator 31SMBV 100B and the communication base station CMW500 through the communication protocol RTCM3.3, and the communication base station CMW500 can send RTCM3.3 information to the positioning module TBOX.

[0070] In this embodiment, the satellite signal simulator and the communication base station are arranged outside the darkroom, which meets the requirements of electromagnetic compatibility testing, avoids electromagnetic influence on each positioning simulation device, protects the safety of each device, and increases the service life of the device.

[0071] The RTCM3.3 message contains carrier phase and pseudorange measurements made by a reference station. A reference station is a GNSS receiver that processes GNSS signals like a normal receiver. The RTCM3.3 message is transmitted from the reference station to another GNSS receiver, enabling that receiver to compensate for its measurement errors, thereby improving its positioning accuracy.

[0072] The electromagnetic compatibility test system for the vehicle positioning function provided in this embodiment includes an electromagnetic interference generating device, a main control device, and a positioning simulation device. It can comprehensively consider the test environment configuration parameters, and by controlling the electromagnetic interference generating device, it can specifically build an electromagnetic environment that better meets the test requirements for the positioning module, and then accurately perform electromagnetic compatibility testing on the positioning module under the electromagnetic environment, and evaluate the electromagnetic compatibility of the positioning module based on the attribute parameter information. It can more comprehensively consider the ability of the positioning function of the entire vehicle or the positioning module to resist electromagnetic interference, facilitate timely discovery of potential faults related to electromagnetic compatibility in the positioning module, increase the overall electromagnetic safety performance of the vehicle, and improve the safety of intelligent connected vehicles and autonomous driving vehicles.

[0073] In an exemplary embodiment, Figure 3 As shown, a method for electromagnetic compatibility testing of vehicle positioning function is provided. The method is executed by a main control device, and can be executed by a computer device such as a terminal or a server alone, or by a terminal and a server together. In the embodiment of the present application, the method is applied to Figure 1 The main control device 20 in the embodiment is taken as an example to illustrate, and the method includes the following steps S201 to S204. Among them:

[0074] Step S201, when the positioning module of the test vehicle and the environment in which it is located meet the test conditions, the positioning simulation device is controlled to generate a positioning signal and send it to the positioning module to activate the positioning module.

[0075] It should be noted that the above test conditions can be customized according to actual needs, for example, the environmental parameters of the test vehicle can meet the conditions. When the test cavity is a darkroom, the positioning module of the test vehicle can be placed in the test cavity, and the satellite signal simulator and the communication base station can be placed outside the darkroom. The darkroom can be reserved with a through hole, which is used to transmit the positioning signal and differential data to the darkroom. The through hole can be, for example, a threaded hole, or a square hole or a hole of other shapes. Among them, the differential data is generated by the communication base station after receiving the satellite signal and processing the data. It is used to improve the positioning accuracy of the positioning module. It can use the differential correction number to correct the received satellite signal, so as to achieve more accurate positioning.

[0076] In this step, the GNSS positioning signal and differential data are transmitted to the darkroom through the through hole of the darkroom, thereby activating the RTK high-precision positioning module of the test vehicle. The main control device can control the lights of the test vehicle to be in a ready state, that is, control the low beam and driver's side direction indicator of the test vehicle to turn on, the interior lights to turn off, and control the combination instrument to turn on and the multimedia screen to ensure that the combination instrument and the multimedia screen can work normally. And control the alarm module to reset, the horn to turn off, the airbag and safety control device to operate, the vehicle rear view device to work, the fan to adjust to a medium air volume, the radio to be turned on and adjusted to the FM band, the front wiper to the maximum speed, the automatic door lock, the adjustable suspension to the normal position, and the driver's seat and steering wheel to the middle position. Optionally, if the test vehicle has auxiliary driving functions such as adaptive cruise control (ACC), automatic emergency braking (AEB), lane keeping assist (LKA), etc., the ACC, AEB, and LKA functions should be set to standby.

[0077] After the property parameters of the test vehicle are adjusted, it can be determined whether the positioning module and the environment meet the test conditions. When the positioning module and the environment meet the test conditions, the positioning simulation device is controlled to generate a positioning signal and send it to the positioning module. In the process of activating the positioning module, when the positioning module sends a registration request to the communication base station, the communication base station is controlled to allocate a transmission address to the positioning module, and the satellite signal simulator is controlled to generate a positioning signal and send it to the positioning module according to the transmission address to activate the positioning module.

[0078] For example, see Figure 4As shown, the system may include a terminal, a vector signal source and a comprehensive tester. The terminal may be a TBOX, which includes a positioning module. The vector signal source may be an SMBV 100B. The comprehensive tester may be a CMW500. The TBOX may include a GNSS radio frequency interface and a UU radio frequency interface. Different radio frequency interfaces have different corresponding functions. The TBOX is connected to the vector signal source SMBV 100B through a direct connection or an air interface. The UU radio frequency port (4G) of the TBOX may be connected to the CMW500 through a direct connection or an air interface. The TBOX sends a registration request to the CMW500 through the UU radio frequency port. The CMW500 receives and responds to the registration request and allocates an IP address for data transmission to the TBOX. The TBOX may send a signal acquisition request to the SMBV 100B according to the IP address, thereby receiving the navigation signal (GNSS Single) sent by the SMBV 100B. The SMBV 100B also sends differential correction data to the CMW500. The differential correction data may be in the form of RTCM 3.3 data format, and CMW500 can send differential correction data to TBOX, which is in the data format of RTCM3.3.

[0079] Step S202: determine the test type and obtain test environment configuration parameters of the positioning module within a preset frequency range according to the test type.

[0080] It should be noted that the above test types may include whole vehicle tests and component tests. The preset frequency range is a frequency range predetermined according to the test type, for example, it may be 20~6000MHz. The test environment configuration parameters may be customized according to actual needs. Different test types correspond to different test environment configuration parameters. Whole vehicle testing refers to installing the positioning module in the entire test vehicle and placing the entire test vehicle in a darkroom for testing; component testing refers to placing a single positioning module in a darkroom for testing.

[0081] Among them, when the test type is a whole vehicle test, the test environment configuration parameters include at least one of the following: test level, reference point, antenna position, antenna polarization mode, scanning step, modulation mode, and dwell time; when the test type is a component test, the test environment configuration parameters include at least one of the following: test level, anti-interference signal type, discharge type, and test standard parameters.

[0082] Specifically, after activating the positioning module, the main control device can import and obtain environmental configuration parameters from an external device according to the test type, or it can obtain environmental configuration parameters according to the test type through a database or blockchain, which is not limited in this embodiment.

[0083] In this embodiment, the test environment configuration parameters of the positioning module within a preset frequency range can be more accurately determined according to the test type, providing good data guidance information for the subsequent electromagnetic interference generated by the positioning module.

[0084] Step S203, according to the test environment configuration parameters, controlling the electromagnetic interference generating device to emit electromagnetic waves to the positioning module to generate electromagnetic interference to the positioning module.

[0085] Step S204: perform an electromagnetic compatibility test on the positioning module, monitor the attribute parameter information of the positioning module, and determine the test result of the positioning module according to the attribute parameter information.

[0086] After obtaining the test environment configuration parameters, the object for which the parameters need to be set can be found according to the test environment configuration parameters, and then the corresponding test environment configuration parameters are configured for the object, which can be, for example, a radio frequency antenna, a signal generator, etc. Different objects have different corresponding configuration parameters.

[0087] When the object of action is a radio frequency object, the corresponding test environment configuration parameters may include: antenna polarization mode, antenna position, scanning step length, etc.; when the object of action is a signal generator, the corresponding test environment configuration parameters may include: modulation mode and dwell time, etc.

[0088] As an implementable method, when the test type is a whole vehicle test, the positioning navigation signal and differential signal are set for the test vehicle, and after the vehicle RTK positioning function module is activated, the anti-interference test is started. The test environment configuration parameters of the whole vehicle test can be obtained first, and according to the test environment configuration parameters, the electromagnetic interference generating device is controlled to emit electromagnetic waves to the positioning module to generate electromagnetic interference to the positioning module. The test environment configuration parameters corresponding to the whole vehicle test can be shown in Table 1 below:

[0089] Table 1

[0090]

[0091] It can be understood that the above-mentioned test frequency can include different frequency levels, namely 20~100, 100~200, 200~220, 220~400, 400~800, 800~1000, 1000~6000, and the test levels can include three types, namely 30V / m, 60V / m, and 100V / m. The field strengths of electromagnetic waves generated by different test levels are different. The higher the test level, the greater the field strength of the corresponding electromagnetic wave. The antenna position can be set in front of the vehicle, the distance between the antenna and the test reference line can be 2.5m, the scanning step size can also be set to different levels, namely linear 5MHz, linear 10MHz, linear 20MHz, and linear 40MHz, the modulation mode can be set to AM, and the dwell time can be set to 2s. After setting the test environment configuration parameters, the signal generator can be controlled to generate an initial RF signal and send it to the power amplifier, and the initial RF signal can be amplified by the power amplifier to obtain the amplified RF signal and send it to the coupler, so that the coupler transmits the amplified RF signal to the coaxial feedthrough module, and then the coaxial feedthrough module transmits the amplified RF signal to the RF antenna. At this time, the RF antenna transmits the amplified RF signal to the positioning module to generate electromagnetic interference to the positioning module.

[0092] It can be understood that, for the same test level, the parameters such as the distance between the antenna and the test reference line, the reference point, the antenna position, the antenna polarization mode, the modulation mode, the dwell time, etc. may be kept unchanged, and different test frequency ranges and different scanning steps may be adjusted each time to generate electromagnetic interference to the positioning module, thereby performing an electromagnetic compatibility test on the positioning module, monitoring the attribute parameter information of the positioning module, and determining the test result of the positioning module based on the attribute parameter information.

[0093] As another possible implementation, when the test type is component test, see Figure 5 As shown, Figure 5 The system structure diagram of the component test includes a positioning module 41, a support 40, a grounding copper strip 42, a low-voltage power supply 43, a low-voltage power supply network 44, a simulated load 45, an actual load 46, and a satellite signal simulator 31. The low-voltage power supply 43 is connected to the simulated load 45 and the actual load 46 respectively through the low-voltage power supply network 44. The satellite signal simulator 31 is connected to the positioning module 41 by direct connection. The positioning module 41, the support 40, the low-voltage power supply 43, the low-voltage power supply network 44, the simulated load 45 and the actual load 46 can be located in the reference ground plane 47 of the test cavity 11. The positioning module 41 can be set on the support 40. The low-voltage power supply network 44 is used to filter the clutter interference of the low-voltage power supply 43. The above-mentioned test cavity 11 can be, for example, a darkroom; the actual load 46 can be, for example, a 50Ω load, used to simulate the load environment in the car; the support 40 can be a low relative dielectric constant support.

[0094] In this embodiment, the GNSS positioning signal and differential data generated by the satellite signal simulator are provided to the vehicle RTK high-precision positioning module to activate the positioning module, and then the test environment configuration parameters corresponding to the component test are obtained. The test type may include multiple test items, and different test items correspond to different test environment configuration parameters. When the test type is a component test, the positioning module is subjected to an electromagnetic compatibility test, and the test items include at least one of the following: an immunity test on the electromagnetic radiation of the positioning module, an electrical transient conduction immunity test along the power line, an electrical transient immunity test of the wires other than the power line through capacitive and inductive coupling, and an electrical immunity test generated by electrostatic discharge. Among them, the test items can be seen in Table 2 below:

[0095] Table 2

[0096]

[0097] It should be noted that when the test item is the electromagnetic radiation immunity test, the test standard based on the test standard parameters is GB 34660-2017, and the corresponding preset frequencies can include two frequency ranges of 20MHz to 200MHz and 200MHz to 2000MHz. Different frequency ranges correspond to different test levels and test methods. Among them, for the frequency range of 20MHz to 200MHz, the test level can be set to 60mA, and the corresponding test method is the bulk current injection (BCI) method; for the frequency range of 200MHz to 2000MHz, the test level can be set to 30V / m, and the corresponding test method is the anechoic chamber method. When the test item is the electrical transient conducted immunity test along the power line, the test standard parameters are based on the test standard GB / T 21437.2-2021, the corresponding immunity signal types may include pulse 1 and pulse 2b, and the test level adopted may be test level III; the corresponding immunity signal types may also include pulse 2a, pulse 3a and pulse 3b, and the corresponding test level adopted may be test level III. When the test item is the electrical transient immunity test of the conductor other than the power line through capacitive and inductive coupling, the test standard parameters are based on the test standard GB / T 21437.3-2021, the corresponding immunity signal types may include pulse 3a and pulse 3b, and the test level adopted may be test level III; the immunity signal types may also be slow pulse 2a (positive pulse) and slow pulse 2a (negative pulse), and the test level adopted may be test level III.

[0098] When the test item is the electrical immunity test for electrostatic discharge, it includes two parts: when the electronic module is not powered on and when the electronic module is powered on. The test standard parameters are based on GB / T 19951-2019. When the electronic module is not powered on, it includes two discharge types: contact discharge and air discharge. When the discharge type is contact discharge, the corresponding discharge voltage may include ±2kV, ±4kV, ±6kV; when the discharge type is air discharge, the corresponding discharge voltage may include ±2kV, ±4kV, ±8kV. When the electronic module is powered on, it includes three discharge types: contact discharge, air discharge and indirect discharge. When the discharge type is contact discharge, the corresponding discharge voltage may include ±2kV, ±4kV, ±6kV; when the discharge type is air discharge, the corresponding discharge voltage may include ±2kV, ±4kV, ±8kV; when the discharge type is indirect discharge, the corresponding discharge voltage may include ±2kV, ±4kV, ±6kV.

[0099] For different test types, during the electromagnetic compatibility test of the positioning module, the attribute parameter information of the positioning module can be monitored, and the test result of the positioning module can be determined based on the attribute parameter information. The attribute parameter information of the positioning module can include the positioning signal, the position information of the test vehicle, the speed information and the time information. The test result includes two situations: the positioning module passes the test and the test fails.

[0100] It is understandable that when the test type is a whole vehicle test, the entire test process can be carried out in a semi-anechoic chamber 10 meters away, specifically, the entire vehicle including the positioning module is placed in a semi-anechoic chamber 10 meters away, so as to conduct an electromagnetic compatibility test on it; when the test type is a component test, the entire test process can be carried out in a 3-meter semi-anechoic chamber, that is, the entire positioning module is placed in a 3-meter semi-anechoic chamber, so as to conduct an electromagnetic compatibility test on it. In addition, in this embodiment, GNSS signals and differential data signals are introduced into the darkroom, and the whole vehicle test introduces signals through the air interface, which can more specifically examine the overall electromagnetic compatibility performance of the vehicle RTK high-precision positioning function and improve the test accuracy of electromagnetic compatibility; for the component test, the positioning module introduces the positioning signal through a direct connection, so that the electromagnetic compatibility performance of the component module can be more specifically examined.

[0101] The present application provides an electromagnetic compatibility test method for a vehicle positioning function. When the positioning module of the test vehicle and the environment in which it is located meet the test conditions, a positioning simulation device is controlled to generate a positioning signal and send it to the positioning module to activate the positioning module. Then, the test type is determined and the test environment configuration parameters of the positioning module within a preset frequency range are obtained according to the test type. According to the test environment configuration parameters, an electromagnetic interference generating device is controlled to emit electromagnetic waves to the positioning module to generate electromagnetic interference to the positioning module. An electromagnetic compatibility test is performed on the positioning module, attribute parameter information of the positioning module is monitored, and a test result of the positioning module is determined according to the attribute parameter information. Compared with the prior art, the technical solution of the present application introduces a positioning signal to the positioning module through a positioning simulation device, so that the positioning module can be automatically activated under test conditions, and the test environment configuration parameters are comprehensively considered. By controlling the electromagnetic interference generating device, an electromagnetic environment that is more in line with the test requirements is targetedly constructed for the positioning module, and then the electromagnetic compatibility test of the positioning module is accurately performed under the electromagnetic environment, and the electromagnetic compatibility of the positioning module is evaluated according to the attribute parameter information. It can more comprehensively consider the ability of the positioning function of the whole vehicle or positioning module to resist electromagnetic interference, facilitate timely discovery of potential faults related to electromagnetic compatibility in the positioning module, increase the overall electromagnetic safety performance of the vehicle, and improve the safety of intelligent connected vehicles and autonomous driving vehicles.

[0102] In another exemplary embodiment of the present application, when the attribute parameter information includes a positioning signal, in order to accurately determine the test result of the positioning module, the test result of the positioning module can be determined according to the attribute parameter information, such as Figure 6 As shown, the above step 204 is replaced by the following steps S301 to S303:

[0103] Step S301, monitoring whether the positioning signal of the test vehicle meets the preset signal requirements.

[0104] Step S302: When the preset signal requirement is not met, it indicates that the electromagnetic compatibility test of the positioning module fails.

[0105] Step S303: When the preset signal requirement is met, it indicates that the electromagnetic compatibility test of the positioning module has passed.

[0106] Specifically, regardless of whether the test type is a vehicle test or a component test, during the electromagnetic compatibility test of the positioning module, the positioning module of the positioning module can be monitored, for example, whether the positioning signal is lost, whether the signal strength of the positioning signal is less than the preset strength threshold, whether the positioning information of the positioning signal is correct, etc. can be monitored in real time. When it is determined that the positioning signal is not lost and the signal strength of the positioning signal is not less than the preset strength threshold, and the positioning information of the positioning signal is correct, that is, the positioning signal satisfies these three conditions, it indicates that the electromagnetic compatibility test of the positioning module has passed. When the positioning signal is lost or the signal strength of the positioning signal is less than the preset strength threshold, or the positioning information of the positioning signal is incorrect, it indicates that the electromagnetic compatibility test of the positioning module has failed.

[0107] Among them, the above-mentioned system can also include a main control display screen, which can display whether the above-mentioned positioning signal meets the preset signal requirements through the central control display screen; when it does not meet the preset signal requirements, a prompt instruction can be generated and displayed on the central control display screen, so that the user can find the reason for the test failure in time; when it meets the preset signal requirements, it can also be displayed in real time on the central control display screen.

[0108] It should be noted that in the process of determining whether the positioning information of the positioning signal is correct, the positioning information can be compared with the preset standard positioning information. When the positioning information is consistent with the preset standard positioning information, the positioning information of the standard positioning signal is correct; when the positioning information is inconsistent with the preset positioning standard information, the positioning information of the standard positioning signal is incorrect.

[0109] In this embodiment, by monitoring whether the positioning signal of the test vehicle meets the preset signal requirements and judging the electromagnetic compatibility test result according to the monitoring result, the accuracy of the test result can be improved.

[0110] In another exemplary embodiment of the present application, when the attribute parameter information includes: location information, speed information and time information of the test vehicle, in order to determine the test result of the positioning module, the test result of the positioning module can be determined according to the attribute parameter information, such as Figure 7 As shown, the above step S204 is replaced by the following steps S401 to S403:

[0111] Step S401 : comparing the position information, speed information and time information with preset attribute parameters respectively to obtain a comparison result.

[0112] Step S402: When the comparison result indicates that the comparison is inconsistent, it indicates that the electromagnetic compatibility test of the positioning module fails.

[0113] Step S403: When the comparison result indicates that the comparison is consistent, it indicates that the electromagnetic compatibility test of the positioning module has passed.

[0114] Specifically, the preset attribute parameters may include standard position information, standard speed information, and standard time information, and the preset attribute parameters are customized according to actual needs. After obtaining the position information, speed information, and time information, the position information may be compared with the standard position information, the speed information may be compared with the standard speed information, and the time information may be compared with the standard time information to obtain a comparison result.

[0115] If the position information, speed information and time information are all consistent, it means that the electromagnetic compatibility test of the positioning module has passed. If any one of the speed information, position information and time information is inconsistent, it means that the electromagnetic compatibility test of the positioning module has failed, that is, when the speed information is inconsistent with the standard speed information, or when the position information is inconsistent with the standard position information, or when the time information is inconsistent with the standard time information, it means that the electromagnetic compatibility test of the positioning module has failed.

[0116] Optionally, see Figure 8 As shown, the main control device is arranged outside the darkroom, and the above-mentioned positioning module is arranged in the darkroom. Monitoring software can be installed in the main control device, and the main control device establishes a communication connection with the positioning module through Ethernet optical conversion. The main control device can be connected to the positioning module in sequence through an ordinary network cable outside the darkroom and through a reserved optical fiber line and an on-board Ethernet connection line in the darkroom, so as to obtain the position information, speed information and time information of the test vehicle.

[0117] In this embodiment, by obtaining the attribute parameter information of the positioning module and determining the test result of the positioning module according to the attribute parameter information, the electromagnetic compatibility test can be performed on the whole vehicle or a single positioning module, thereby more comprehensively examining the ability of the positioning function of the whole vehicle or the positioning module to resist electromagnetic interference, increasing the overall electromagnetic safety function of the vehicle, and greatly enhancing the safety of automobile use. For enterprises, unexpected potential faults related to electromagnetic compatibility can be discovered in time during the product development stage, thereby facilitating rapid response and correction, greatly accelerating the development process; for consumers, the overall electromagnetic safety of the product is enhanced, ensuring driving safety.

[0118] Based on the same inventive concept, the embodiment of the present application also provides an electromagnetic compatibility test device for a vehicle positioning function for implementing the electromagnetic compatibility test method for the vehicle positioning function involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in the embodiments of the electromagnetic compatibility test device for one or more vehicle positioning functions provided below can refer to the limitations of the electromagnetic compatibility test method for the vehicle positioning function above, and will not be repeated here.

[0119] In an exemplary embodiment, Fig. 9 As shown, an electromagnetic compatibility test device for a vehicle positioning function is provided, comprising:

[0120] The activation module 710 is used to control the positioning simulation device to generate a positioning signal and send it to the positioning module to activate the positioning module when the positioning module of the test vehicle and the environment in which the test vehicle is located meet the test conditions;

[0121] A parameter determination module 720, used to determine the test type and obtain test environment configuration parameters of the positioning module within a preset frequency range according to the test type;

[0122] The electromagnetic interference module 730 is used to control the electromagnetic interference generating device to emit electromagnetic waves to the positioning module according to the test environment configuration parameters, so as to generate electromagnetic interference to the positioning module;

[0123] The result determination module 740 is used to perform an electromagnetic compatibility test on the positioning module, monitor the attribute parameter information of the positioning module, and determine the test result of the positioning module according to the attribute parameter information.

[0124] As an optional implementation, the activation module 710 is specifically configured to:

[0125] When the positioning module sends a registration request to the communication base station, controlling the communication base station to allocate a transmission address to the positioning module;

[0126] The satellite signal simulator is controlled to generate a positioning signal and sent to the positioning module according to the transmission address to activate the positioning module.

[0127] As an optional implementation, the parameter determination module 720 is specifically configured to:

[0128] When the test type is a vehicle test, the test environment configuration parameters include at least one of the following: test level, reference point, antenna position, antenna polarization mode, scanning step, modulation mode, and dwell time;

[0129] When the test type is component test, the test environment configuration parameters include at least one of the following: test level, anti-disturbance signal type, discharge type, and test standard parameters.

[0130] As an optional implementation, the result determination module 740 is specifically configured to:

[0131] When the test type is component test, the electromagnetic compatibility test is performed on the positioning module, including at least one of the following: immunity test of electromagnetic radiation of the positioning module, electrical transient conduction immunity test along the power line, electrical transient immunity test of wires other than the power line through capacitive and inductive coupling, and electrical immunity test caused by electrostatic discharge.

[0132] As an optional implementation, the result determination module 740 is further configured to:

[0133] Monitor whether the positioning signal of the test vehicle meets the preset signal requirements;

[0134] If the preset signal requirements are not met, it indicates that the electromagnetic compatibility test of the positioning module has failed;

[0135] When the preset signal requirements are met, it indicates that the electromagnetic compatibility test of the positioning module has passed.

[0136] As an optional implementation, the result determination module 740 is further configured to:

[0137] The test results of the positioning module are determined according to the attribute parameter information, including:

[0138] Compare the position information, speed information and time information with the preset attribute parameters respectively to obtain a comparison result;

[0139] When the comparison result indicates that the comparison is inconsistent, it indicates that the electromagnetic compatibility test of the positioning module fails;

[0140] When the comparison result indicates that the comparison is consistent, it indicates that the electromagnetic compatibility test of the positioning module has passed.

[0141] Among them, by implementing this implementation method, by introducing a positioning signal for the positioning module, the positioning module can be automatically activated under test conditions, and the test environment configuration parameters are comprehensively considered. By controlling the electromagnetic interference generating device, an electromagnetic environment that better meets the test requirements is targetedly constructed for the positioning module, and then the electromagnetic compatibility test of the positioning module is accurately performed under the electromagnetic environment, and the electromagnetic compatibility of the positioning module is evaluated according to the attribute parameter information. It can more comprehensively consider the ability of the positioning function of the whole vehicle or the positioning module to resist electromagnetic interference, facilitate timely discovery of potential faults related to electromagnetic compatibility in the positioning module, increase the overall electromagnetic safety performance of the vehicle, and improve the safety of intelligent connected vehicles and self-driving vehicles.

[0142] In an exemplary embodiment, a computer device is provided. The computer device may be a server or a terminal. The internal structure diagram thereof may be as follows: Fig.10As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store video tag processing data. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, an electromagnetic compatibility test method for a vehicle positioning function is implemented.

[0143] Those skilled in the art will understand that Fig.10 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0144] In an exemplary embodiment, a computer device is further provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above-mentioned method embodiments when executing the computer program.

[0145] In an exemplary embodiment, a computer-readable storage medium is provided, storing a computer program, and when the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0146] In an exemplary embodiment, a computer program product is provided, including a computer program, and when the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0147] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0148] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM may be in various forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM).

[0149] The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. The non-relational database may include a distributed database based on blockchain, etc., but is not limited thereto. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but is not limited thereto.

[0150] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0151] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A method for testing electromagnetic compatibility of a vehicle positioning function, characterized in that: The electromagnetic compatibility test method of the vehicle positioning function includes: When the positioning module of the test vehicle and the environment in which it is located meet the test conditions, the positioning simulation device is controlled to generate a positioning signal and send it to the positioning module to activate the positioning module; Determine the test type and obtain the test environment configuration parameters of the positioning module within a preset frequency range according to the test type; According to the test environment configuration parameters, controlling the electromagnetic interference generating device to emit electromagnetic waves to the positioning module to generate electromagnetic interference to the positioning module; Performing an electromagnetic compatibility test on the positioning module, monitoring the attribute parameter information of the positioning module, and determining the test result of the positioning module according to the attribute parameter information; Wherein, obtaining the test environment configuration parameters of the positioning module within a preset frequency range according to the test type specifically includes: When the test type is a vehicle test, the test environment configuration parameters include at least one of the following: test level, reference point, antenna position, antenna polarization mode, scanning step, modulation mode, and dwell time; When the test type is a component test, the test environment configuration parameters include at least one of the following: test level, anti-interference signal type, discharge type, and test standard parameters.

2. The electromagnetic compatibility test method of the vehicle positioning function according to claim 1, characterized in that: The positioning simulation device includes a communication base station and a satellite signal simulator; the control positioning simulation device generates a positioning signal and sends it to the positioning module to activate the positioning module, specifically including: When the positioning module sends a registration request to the communication base station, controlling the communication base station to allocate a transmission address to the positioning module; The satellite signal simulator is controlled to generate a positioning signal and sent to the positioning module according to the transmission address to activate the positioning module.

3. The electromagnetic compatibility test method of the vehicle positioning function according to claim 1, characterized in that: When the test type is a component test, the positioning module is subjected to an electromagnetic compatibility test, including at least one of the following: an electromagnetic radiation immunity test on the positioning module, an electrical transient conduction immunity test along the power line, an electrical transient immunity test of wires other than the power line through capacitive and inductive coupling, and an electrical immunity test generated by electrostatic discharge.

4. The electromagnetic compatibility test method of the vehicle positioning function according to claim 1, characterized in that: The attribute parameter information includes: a positioning signal; and determining the test result of the positioning module according to the attribute parameter information specifically includes: Monitoring whether the positioning signal of the test vehicle meets the preset signal requirements; When the preset signal requirement is not met, it indicates that the electromagnetic compatibility test of the positioning module has failed; When the preset signal requirements are met, it indicates that the electromagnetic compatibility test of the positioning module has passed.

5. The electromagnetic compatibility test method of the vehicle positioning function according to claim 1, characterized in that: The attribute parameter information includes: location information, speed information and time information of the test vehicle; Determining the test result of the positioning module according to the attribute parameter information specifically includes: Comparing the position information, speed information and time information with preset attribute parameters respectively to obtain comparison results; When the comparison result indicates that the comparison is inconsistent, it indicates that the electromagnetic compatibility test of the positioning module fails; When the comparison result indicates that the comparison is consistent, it indicates that the electromagnetic compatibility test of the positioning module is passed.

6. An electromagnetic compatibility test system for vehicle positioning function, characterized in that: The electromagnetic compatibility test system for the vehicle positioning function comprises: an electromagnetic interference generating device, a main control device, and a positioning simulation device; the main control device establishes communication connections with the electromagnetic interference generating device and the positioning simulation device respectively; The electromagnetic interference generating device is used to: emit electromagnetic waves to the positioning module to generate electromagnetic interference to the positioning module; The main control device is used to: when the positioning module of the test vehicle and the environment in which it is located meet the test conditions, control the positioning simulation device to generate a positioning signal and send it to the positioning module; determine the test type and obtain the test environment configuration parameters of the positioning module within a preset frequency range according to the test type; control the electromagnetic interference generating device to emit electromagnetic waves to the positioning module according to the test environment configuration parameters; perform an electromagnetic compatibility test on the positioning module, monitor the attribute parameter information of the positioning module, and determine the test result of the positioning module according to the attribute parameter information; The positioning simulation device is used to: generate a positioning signal and send it to the positioning module to activate the positioning module; The main control module is also used for: when the test type is a vehicle test, the test environment configuration parameters include at least one of the following: test level, reference point, antenna position, antenna polarization mode, scanning step, modulation mode, and dwell time; When the test type is a component test, the test environment configuration parameters include at least one of the following: test level, anti-interference signal type, discharge type, and test standard parameters.

7. The electromagnetic compatibility test system according to claim 6, characterized in that: The electromagnetic interference generating device comprises: a test cavity, a signal generator, a power amplifier, a coupler, a radio frequency antenna, a coaxial feedthrough module and a power detection module; the signal generator, the power amplifier, the coupler, the coaxial feedthrough module and the power detection module are all located outside the test cavity, and the radio frequency antenna is located inside the test cavity; the coupler is electrically connected to the power amplifier, the coaxial feedthrough module and the power detection module respectively, and the power amplifier is also electrically connected to the signal generator; The signal generator is used to: generate an initial radio frequency signal and send it to the power amplifier; The power amplifier is used to: perform signal amplification processing on the initial radio frequency signal to obtain an amplified radio frequency signal and send it to the coupler; The coupler is used to: transmit the amplified radio frequency signal to the coaxial feedthrough module; The power detection module is used to detect forward power and directional power to determine whether the amplified RF signal is transmitted to the coaxial feedthrough module; The coaxial feedthrough module is used to: transmit the amplified radio frequency signal to the radio frequency antenna; The radio frequency antenna is used to transmit the amplified radio frequency signal to the positioning module to generate electromagnetic interference to the positioning module.

8. The electromagnetic compatibility test system according to claim 7, characterized in that: The positioning simulation device comprises: a satellite signal simulator, a communication base station, a first transmitting antenna and a second transmitting antenna; the satellite signal simulator is electrically connected to the first transmitting antenna and the communication base station respectively, and the communication base station is also electrically connected to the second transmitting antenna, the satellite signal simulator and the communication base station are both located outside the test cavity; the first transmitting antenna and the second transmitting antenna are both located inside the test cavity; The satellite signal simulator is used to: simulate the attitude of the satellite, generate a positioning signal and send it to the first transmitting antenna; and to generate a satellite signal and send it to the communication base station; The first transmitting antenna is used to: send the positioning signal to the positioning module; The communication base station is used to: receive the satellite signal sent by the satellite signal simulator, generate differential data according to the satellite signal and send the differential data to the second transmitting antenna; The second transmitting antenna is used to send the differential data to the positioning module.

9. A main control device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the electromagnetic compatibility test method for the vehicle positioning function described in any one of claims 1 to 5.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the electromagnetic compatibility testing method for the vehicle positioning function described in any one of claims 1 to 5 are implemented.

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