CN107238759B

CN107238759B - Electromagnetic anti-interference performance testing method and device for PEPS system vehicle

Info

Publication number: CN107238759B
Application number: CN201710547521.2A
Authority: CN
Inventors: 许欣; 范成慧; 吴凤英; 李平
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2017-07-06
Filing date: 2017-07-06
Publication date: 2020-12-01
Anticipated expiration: 2037-07-06
Also published as: CN107238759A

Abstract

The invention discloses a method and a device for testing electromagnetic interference rejection performance of a PEPS system vehicle, and belongs to the field of vehicle performance testing. The method comprises the following steps: the pneumatic module provides power for the mechanical key module, the door handle mechanical arm, the clamp dummy and the interference source module in a pneumatic mode; the control module sends a first control instruction to the mechanical key module, a second control instruction to the clamp dummy, a third control instruction to the doorknob mechanical arm and a fourth control instruction to the interference source module; the interference source module sends out a first interference signal of target field intensity; when the performance of the induction button is tested, the mechanical key module presses the induction button of the door handle; detecting the state of the vehicle door by the mechanical arm of the door handle, and determining the performance of the induction button under the target field intensity; when the performance of the distance sensor is tested, the clamp dummy carries the intelligent key to enter the detection range of the distance sensor; the door handle robot detects the state of the door and determines the performance of the distance sensor at the target field strength.

Description

Electromagnetic anti-interference performance testing method and device for PEPS system vehicle

Technical Field

The invention relates to the technical field of vehicle performance testing, in particular to a method and a device for testing electromagnetic interference rejection performance of a PEPS system vehicle.

Background

With the development of the automobile manufacturing industry, electronic devices such as sensors and electronic switches are more and more widely applied in vehicles, for example, a PEPS (Passive Entry Passive Start) system in a vehicle can realize automatic opening and closing of a vehicle door through a position sensor and an electronic switch installed in a door handle of the vehicle, and the process is as follows: when the vehicle detects that the intelligent key is around the door handle through the sensor or the sensing button of the vehicle is pressed down, the PEPS system of the vehicle can be started through the electronic switch by the vehicle, so that the automatic unlocking or locking of the vehicle door is realized.

However, the increase of electronic devices in a vehicle can cause problems with the electromagnetic compatibility of the vehicle, which refers to the ability of a device or system to operate satisfactorily in its electromagnetic environment and not to generate intolerable electromagnetic interference with any device in its environment. For example, when a vehicle is driven to a high field intensity environment, the PEPS system in the vehicle may cause that the doors of the vehicle cannot be automatically unlocked or locked due to strong electromagnetic interference. At this time, the worker needs to perform performance tests on the sensor or the induction button in the vehicle of the PEPS system in different field intensity environments to judge the electromagnetic compatibility of the vehicle of the PEPS system. Therefore, a method and a device for testing electromagnetic immunity performance of a PEPS system vehicle are needed to improve reliability of the PEPS system vehicle.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a method and a device for testing the electromagnetic disturbance rejection performance of a PEPS system vehicle. The technical scheme is as follows:

in a first aspect, the invention provides an electromagnetic immunity performance testing device for a PEPS system vehicle, which comprises a control module, a mechanical key module, a clamp dummy, a door handle mechanical arm, a pneumatic module and an interference source module; the control module is respectively connected with the pneumatic module, the mechanical button module, the doorknob mechanical arm, the clamp dummy and the interference source module, and the pneumatic module is respectively connected with the control module, the mechanical button module, the doorknob mechanical arm and the clamp dummy;

the pneumatic module is used for providing power for the mechanical key module, the door handle mechanical arm, the clamp dummy and the interference source module in a pneumatic mode;

the control module is used for sending a first control instruction indicating the action of the mechanical key module to the mechanical key module, sending a second control instruction indicating the action of the clamp dummy to the clamp dummy, sending a third control instruction indicating the action of the doorknob mechanical arm to the doorknob mechanical arm, and sending a fourth control instruction indicating that the interference source module sends a first interference signal of a target field intensity to the interference source module;

the interference source module is used for receiving the fourth control instruction and sending a first interference signal of the target field intensity according to the fourth control instruction;

when the performance of a key-free entering and starting induction button of the PEPS system vehicle under the target field intensity is tested, the mechanical key module is used for receiving the first control instruction and pressing the induction button of the door handle of the PEPS system vehicle according to the first control instruction so as to enable the door of the PEPS system vehicle to reach a first opening condition;

the door handle mechanical arm is used for receiving the third control command, pulling a door handle of the PEPS system vehicle according to the third control command, detecting the state of a door of the PEPS system vehicle, and determining the performance of the induction button under the target field intensity according to the state;

when the performance of the distance sensor of the PEPS system vehicle under the target field intensity is tested, the clamp dummy is used for receiving the second control instruction, carrying an intelligent key matched with the PEPS system vehicle according to the second control instruction, and entering the detection range of the distance sensor to enable the door of the PEPS system vehicle to reach a second opening condition;

the door handle mechanical arm is used for receiving the third control command, pulling a door handle of the PEPS system vehicle according to the third control command, detecting the state of a door of the PEPS system vehicle, and determining the performance of the distance sensor under the target field intensity according to the state.

Optionally, the pneumatic module comprises an air cylinder and a pressure regulating valve, the pressure regulating valve is connected with one end of the air cylinder, and the other end of the air cylinder is respectively connected with the control module, the mechanical button module, the door handle mechanical arm and the clamp dummy;

the pressure regulating valve is used for regulating the movement pressure of the cylinder;

the control module is further configured to send a fifth control instruction to the air cylinder, the fifth control instruction is used for indicating the air cylinder to provide power for the mechanical key module, and the fifth control instruction carries a first motion frequency of the air cylinder; the cylinder is used for receiving the fifth control instruction and compressing air at the first motion frequency under the motion pressure to provide power for the mechanical key module;

the control module is further configured to send a sixth control instruction to the cylinder, where the sixth control instruction is used to instruct the cylinder to provide power for the door handle mechanical arm, and the sixth control instruction carries a second motion frequency of the cylinder; the air cylinder is used for receiving the sixth control instruction, and compressing air at the second motion frequency under the motion pressure to provide power for the door handle mechanical arm;

the control module is further configured to send a seventh control instruction to the cylinder, the seventh control instruction is used for instructing the cylinder to provide power for the clamp dummy, and the seventh control instruction carries a third motion frequency of the cylinder; the air cylinder is used for receiving the seventh control instruction and compressing air at the third movement frequency under the movement pressure to power the clamp dummy.

Optionally, the interference source module includes a signal generator, a power amplifier and an antenna, one end of the signal generator is connected to one end of the power amplifier, and the other end of the power amplifier is connected to the antenna and the control module respectively;

the signal generator is used for generating a second interference signal and transmitting the second interference signal to the power amplifier;

the power amplifier is configured to receive the second interference signal, perform power scaling processing on the second interference signal according to the target field strength to obtain the first interference signal, and send the first interference signal to the antenna;

the antenna is used for receiving the first interference signal and transmitting the first interference signal.

Optionally, the control module is further configured to send an eighth control instruction to the jig dummy, where the eighth control instruction indicates that the jig dummy acts;

when the performance of the start button of the PEPS system vehicle under the target field intensity is tested, the clamp dummy is further used for receiving the eighth control instruction, entering the PEPS system vehicle according to the eighth control instruction, pressing the start button of the PEPS system vehicle to enable the PEPS system vehicle to reach a first start condition, detecting the state of an engine of the PEPS system vehicle, and determining the performance of the start button under the target field intensity according to the state of the engine.

Optionally, the control module is further configured to send a ninth control instruction to the mechanical key module, where the ninth control instruction indicates an action of the mechanical key module;

when the performance of the start button of the PEPS system vehicle under the target field intensity is tested, the mechanical key module is further used for receiving the ninth control instruction, entering the PEPS system vehicle according to the ninth control instruction, pressing the start button of the PEPS system vehicle to enable the PEPS system vehicle to reach a second start condition, detecting the state of an engine of the PEPS system vehicle, and determining the performance of the start button under the target field intensity according to the state of the engine.

In a second aspect, the invention provides an electromagnetic immunity performance testing method for a PEPS system vehicle, wherein the electromagnetic immunity performance testing method is applied to an electromagnetic immunity performance testing device, and the electromagnetic immunity performance testing device comprises a control module, a mechanical key module, a clamp dummy, a door handle mechanical arm, a pneumatic module and an interference source module; the control module is respectively connected with the pneumatic module, the mechanical button module, the doorknob mechanical arm, the clamp dummy and the interference source module, and the pneumatic module is respectively connected with the control module, the mechanical button module, the doorknob mechanical arm and the clamp dummy;

the pneumatic module provides power for the mechanical key module, the door handle mechanical arm, the clamp dummy and the interference source module in a pneumatic mode;

the control module sends a first control instruction indicating the action of the mechanical key module to the mechanical key module, a second control instruction indicating the action of the clamp dummy to the clamp dummy, a third control instruction indicating the action of the doorknob mechanical arm to the doorknob mechanical arm, and a fourth control instruction indicating that the interference source module sends a first interference signal of a target field intensity to the interference source module;

the interference source module receives the fourth control instruction and sends out a first interference signal of the target field intensity according to the fourth control instruction;

when the performance of a key-free entering and starting induction button of a PEPS system vehicle under the target field intensity is tested, the mechanical key module receives the first control instruction, and presses the induction button of a door handle of the PEPS system vehicle according to the first control instruction so as to enable the door of the PEPS system vehicle to reach a first opening condition;

the door handle mechanical arm receives the third control instruction, pulls a door handle of the PEPS system vehicle according to the third control instruction, detects the state of a door of the PEPS system vehicle, and determines the performance of the induction button under the target field intensity according to the state;

when the performance of the distance sensor of the PEPS system vehicle under the target field intensity is tested, the clamp dummy receives the second control instruction, carries an intelligent key matched with the PEPS system vehicle according to the second control instruction, and enters the detection range of the distance sensor to enable the door of the PEPS system vehicle to reach a second opening condition;

the door handle mechanical arm receives the third control command, pulls a door handle of the PEPS system vehicle according to the third control command, detects the state of a door of the PEPS system vehicle, and determines the performance of the distance sensor under the target field intensity according to the state.

the pressure regulating valve regulates the movement pressure of the cylinder;

the control module sends a fifth control instruction to the air cylinder, the fifth control instruction is used for indicating the air cylinder to provide power for the mechanical key module, and the fifth control instruction carries the first motion frequency of the air cylinder; the air cylinder receives the fifth control instruction, and compresses air at the first motion frequency under the motion pressure to provide power for the mechanical key module;

the control module sends a sixth control instruction to the air cylinder, the sixth control instruction is used for indicating the air cylinder to provide power for the door handle mechanical arm, and the sixth control instruction carries a second motion frequency of the air cylinder; the cylinder receives the sixth control command, and compresses air at the second motion frequency under the motion pressure to power the door handle mechanical arm;

the control module sends a seventh control instruction to the air cylinder, the seventh control instruction is used for indicating the air cylinder to provide power for the clamp dummy, and the seventh control instruction carries a third motion frequency of the air cylinder; the cylinder receives the seventh control command and compresses air at the third motion frequency at the motion pressure to power the clamp dummy.

the signal generator generates a second interference signal and sends the second interference signal to the power amplifier;

the power amplifier receives the second interference signal, performs power scaling processing on the second interference signal according to the target field intensity to obtain the first interference signal, and sends the first interference signal to the antenna;

and the antenna receives the first interference signal and transmits the first interference signal.

Optionally, the control module sends an eighth control instruction indicating the motion of the jig dummy to the jig dummy;

when the performance of the start button of the PEPS system vehicle under the target field intensity is tested, the clamp dummy receives the eighth control instruction, enters the PEPS system vehicle according to the eighth control instruction, presses the start button of the PEPS system vehicle to enable the PEPS system vehicle to reach a first start condition, detects the state of an engine of the PEPS system vehicle, and determines the performance of the start button under the target field intensity according to the state of the engine.

Optionally, the control module sends a ninth control instruction indicating an action of the mechanical key module to the mechanical key module;

when the performance of the start button of the PEPS system vehicle under the target field intensity is tested, the mechanical key module receives the ninth control instruction, enters the PEPS system vehicle according to the ninth control instruction, presses the start button of the PEPS system vehicle to enable the PEPS system vehicle to reach a second start condition, detects the state of an engine of the PEPS system vehicle, and determines the performance of the start button under the target field intensity according to the state of the engine.

In the embodiment of the invention, the electromagnetic interference rejection performance testing device comprises a pneumatic module 101, a control module 102, an interference source module 103, a mechanical key module 104, a door handle mechanical arm 105 and a clamp dummy 106; the pneumatic module 101 is configured to provide power to the mechanical button module 104, the door handle mechanical arm 105, the clamp dummy 106, and the interference source module 103 in a pneumatic manner; the control module 102 is configured to send a first control instruction indicating an action of the mechanical key module 104 to the mechanical key module 104, send a second control instruction indicating an action of the clamp dummy 106 to the clamp dummy 106, send a third control instruction indicating an action of the door handle dummy robot 105 to the door handle robot arm 105, and send a fourth control instruction indicating that the interference source module 103 sends a first interference signal of a target field strength to the interference source module 103; the interference source module 103 is configured to receive the fourth control instruction, and send a first interference signal of the target field strength according to the fourth control instruction; when the performance of the induction button of the PEPS system vehicle under the target field intensity is tested, the mechanical key module 104 is configured to receive the first control instruction, and press the induction button of the door handle of the PEPS system vehicle according to the first control instruction, so that the door of the PEPS system vehicle reaches a first opening condition; the door handle mechanical arm 105 is used for receiving the third control command, pulling a door handle of the PEPS system vehicle according to the third control command, detecting the state of a door of the PEPS system vehicle, and determining the performance of the induction button under the target field intensity according to the state; when the performance of the distance sensor of the PEPS system vehicle under the target field intensity is tested, the clamp dummy 106 is used for receiving the second control instruction, carrying an intelligent key matched with the PEPS system vehicle according to the second control instruction, and entering the detection range of the distance sensor to enable the vehicle door of the PEPS system vehicle to reach a second opening condition; the door handle mechanical arm 105 is configured to receive the third control command, pull the door handle of the PEPS system vehicle according to the third control command, detect a state of the door of the PEPS system vehicle, and determine the performance of the distance sensor at the target field strength according to the state. Therefore, the electromagnetic immunity performance of the PEPS system vehicle is tested under the target field intensity, and the pneumatic module 101 is arranged in the electromagnetic immunity performance testing device, so that power can be provided for the mechanical key module 104, the door handle mechanical arm 105 and the clamp dummy 106 in a pneumatic mode, the electromagnetic environment of an anechoic chamber is not influenced, the requirement on the electromagnetic immunity performance of each module in the electromagnetic immunity performance testing device is lowered, and the expenditure of the electromagnetic immunity performance testing device is saved.

Drawings

FIG. 1 is a schematic structural diagram of an electromagnetic immunity testing device for a PEPS system vehicle according to an embodiment of the invention;

fig. 2 is a flowchart of an electromagnetic immunity performance testing method for a PEPS system vehicle according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiment of the invention provides an electromagnetic immunity performance testing device for a PEPS system vehicle, which comprises a pneumatic module 101, a control module 102, an interference source module 103, a mechanical key module 104, a door handle mechanical arm 105 and a clamp dummy 106, wherein the pneumatic module 101 is connected with the control module 102; the control module 102 is connected to the pneumatic module 101, the mechanical button module 104, the door handle robot 105, the clamp dummy 106, and the interference source module 103, respectively, and the pneumatic module 101 is connected to the control module 102, the mechanical button module 104, the door handle robot 105, and the clamp dummy 106, respectively.

The pneumatic module 101 is used to pneumatically power the mechanical button module 104, the door handle robot 105 and the clamp dummy 106.

The pneumatic module 101 includes a cylinder 1011 and a pressure regulating valve 1012, the pressure regulating valve 1012 is connected to one end of the cylinder 1011, and the other end of the cylinder 1011 is connected to the control module 102, the mechanical button module 104, the door handle robot 105 and the clamp dummy 106 respectively.

Specifically, the pressure regulating valve 1012 is used for regulating the movement pressure of the cylinder 1011.

Wherein, the worker can adjust the movement pressure of the cylinder 1011 by adjusting the pressure adjusting valve 1012 in advance.

The control module 102 is configured to send a fifth control instruction to the cylinder 1011, where the fifth control instruction is used to instruct the cylinder 1011 to provide power for the mechanical key module 104, and the fifth control instruction carries the first motion frequency of the cylinder 1011; the cylinder 1011 is configured to receive the fifth control command, and compress air at the first motion frequency under the motion pressure to power the mechanical key module 104.

In the embodiment of the invention, the motion pressure of the cylinder 1011 is controlled by the pressure regulating valve 1012, so as to control the motion amplitude of the motion of the cylinder 1011, the control module 102 sends a fifth control command carrying a first motion frequency to the cylinder 1011, after receiving the fifth control command, the cylinder acquires the first motion frequency from the fifth control command, and according to the instruction of the fifth control command, the cylinder compresses air at the motion amplitude and the first motion frequency, so as to perform reciprocating cylinder motion, thereby providing power for the mechanical key module 104.

The control module 102 is further configured to send a sixth control instruction to the cylinder 1011, where the sixth control instruction is used to instruct the cylinder 1011 to provide power for the door handle mechanical arm 105, and the sixth control instruction carries the second motion frequency of the cylinder 1011; the cylinder 1011 is configured to receive the sixth control command, and compress air at the second motion frequency under the motion pressure to power the door handle robot 105.

In the embodiment of the invention, the movement pressure of the cylinder 1011 is controlled by the pressure regulating valve 1012 so as to control the movement amplitude of the movement of the cylinder 1011, the control module 102 sends a sixth control command carrying a second movement frequency to the cylinder 1011, the cylinder 1011 receives the fifth control command and then acquires the second movement frequency from the sixth control command, and the cylinder 1011 compresses air at the movement amplitude and the second movement frequency according to the command of the sixth control command so as to perform reciprocating cylinder movement, thereby providing power for the door handle mechanical arm 105.

The control module 102 is further configured to send a seventh control command to the cylinder 1011, where the seventh control command is used to instruct the cylinder 1011 to provide power for the clamp dummy 106, and the seventh control command carries a third motion frequency of the cylinder 1011; the cylinder 1011 is configured to receive the seventh control command, and compress air at the third motion frequency under the motion pressure to power the clamp dummy 106.

In the embodiment of the invention, the movement pressure of the cylinder 1011 is controlled by the pressure regulating valve 1012 so as to control the movement amplitude of the movement of the cylinder 1011, the control module 102 sends a seventh control command carrying a third movement frequency to the cylinder 1011, after the cylinder receives the seventh control command, the cylinder acquires the third movement frequency from the seventh control command, and according to the instruction of the seventh control command, the cylinder compresses air under the movement amplitude and the third movement frequency to perform reciprocating cylinder movement, so as to provide power for the clamp dummy 106.

In the embodiment of the present invention, the electromagnetic immunity performance testing apparatus provides an interference signal required by a test environment through the interference source module 103, so that the field strength of the whole test environment reaches a target field strength.

Therefore, the control module 102 is further configured to send a fourth control instruction to the interference source module 103, where the fourth control instruction indicates that the interference source module 103 sends out the first interference signal of the target field strength. The interference source module 103 is configured to receive the fourth control instruction, and send a first interference signal of the target field strength according to the fourth control instruction.

Specifically, the aggressor module 103 includes a signal generator 1031, a power amplifier 1032 and an antenna 1033, where one end of the signal generator 1031 is connected to one end of the power amplifier 1032, and the other end of the power amplifier 1032 is connected to the antenna 1033 and the control module 102, respectively.

The signal generator 1031 is configured to generate a second interference signal, and transmit the second interference signal to the power amplifier 1032.

The power amplifier 1032 is configured to receive the second interference signal, perform power scaling processing on the second interference signal according to the target field strength to obtain the first interference signal, and send the first interference signal to the antenna 1033.

The antenna 1033 is configured to receive the first interference signal and transmit the first interference signal.

The control module 102 may send a fourth control instruction to the signal generator 1031 and the power amplifier 1032 in the interference source module 103, and when receiving the fourth control instruction, the signal generator 1031 generates a second interference signal according to the fourth control instruction and sends the second interference signal to the power amplifier 1032. The fourth control instruction carries a power scaling coefficient for performing power scaling on the second interference signal, when the power amplifier 1032 receives the fourth control instruction, the power scaling coefficient is obtained from the fourth control instruction, and power scaling processing is performed on the received second interference signal according to the power scaling coefficient, so that the first interference signal is obtained. The first interference signal is transmitted into the test environment via the antenna 1033, so that the field strength of the test environment reaches the target field strength.

It should be noted that before the signal generator 1031, the power amplifier 1032 and the antenna 1033 in the interference source module 103 are used, the field strength of the interference module 103 needs to be calibrated in advance. The field intensity calibration may be performed by using a standard field method, a standard antenna method, or other conventional techniques. And will not be described in detail herein.

The target field strength may be set and changed according to the user's needs, which is not specifically limited in the embodiment of the present invention. For example, the target field strength may be 150V/m, 120V/m, etc.

In the embodiment of the invention, the pneumatic module 101 provides power for the auxiliary mold in the electromagnetic immunity test device, and after the interference source module 103 sends out the first interference signal of the target field strength, the control module 102 controls the auxiliary mold in the electromagnetic immunity test device to act, so as to simulate the electromagnetic compatibility of the PEPS system vehicle to be tested in the target field strength environment.

The PEPS system vehicle has the functions of automatically unlocking and locking the vehicle door, namely, the PEPS system vehicle can be automatically unlocked by pressing a sensing button of the vehicle, or the PEPS system vehicle can be automatically unlocked by carrying a smart key matched with the PEPS system vehicle into the detection range of a distance sensor in a door handle of the vehicle.

Therefore, the control module 102 is configured to send a first control command indicating the motion of the mechanical key module 104 to the mechanical key module 104, send a second control command indicating the motion of the gripper dummy 106 to the gripper dummy 106, and send a third control command indicating the motion of the door handle robot arm 105 to the door handle robot arm 105.

When the performance of the induction button of the PEPS system vehicle under the target field intensity is tested, the mechanical key module 104 is configured to receive the first control instruction, and press the induction button of the door handle of the PEPS system vehicle according to the first control instruction, so that the door of the PEPS system vehicle reaches a first opening condition;

the door handle mechanical arm 105 is configured to receive the third control command, pull the door handle of the PEPS system vehicle according to the third control command, detect a state of the door of the PEPS system vehicle, and determine the performance of the sensor button at the target field strength according to the state.

Wherein, the first opening condition is that the induction button is pressed down and the intelligent key passes the authentication.

In the embodiment of the invention, a detection antenna for detecting a smart key is installed in a door handle of a vehicle door of the PEPS system vehicle, the smart key is placed in a detection range of the detection antenna in advance, when an induction button of the door handle of the PEPS system vehicle is pressed through the mechanical key Module 104, an automatic unlocking function of the PEPS system vehicle is turned on, the detection antenna starts to detect whether the smart key is in the detection range, if so, high-frequency and low-frequency two-way communication is established with the smart key through an ECU (Electronic Control Unit) in the PEPS system vehicle, and identity verification is carried out on the smart key, if the identity verification is passed, the ECU determines that a first opening condition of the PEPS system vehicle is reached, the ECU sends a vehicle door command to a BCM (Body unlocking Control Module) through a Controller Area Network (Controller Area Network) bus, the BCM controls the door to be unlocked. If the identity authentication is not passed, the ECU does not send a door unlocking instruction to the BCM, and the detection antenna can continue to execute the step of detecting whether the intelligent key exists in the detection range.

Further, after the first opening condition is reached, whether the door is in the unlocked state or not can be tested through the door handle mechanical arm 105 in the electromagnetic disturbance rejection performance testing device, specifically, the door handle mechanical arm 105 receives the third control command sent by the control module 102, the door handle of the PEPS system vehicle is pulled according to the third control command, the state of the door of the PEPS system vehicle is detected, if the door of the vehicle can be pulled, the state of the door is determined to be in the unlocked state, the performance of the distance sensor is good under the target field strength, if the door of the vehicle cannot be pulled, the state of the door is determined not to be in the unlocked state, and under the target field strength, the distance sensor is subjected to electromagnetic interference in a testing environment, and the performance of the distance sensor is damaged and cannot normally work.

When the performance of the distance sensor of the PEPS system vehicle under the target field intensity is tested, the clamp dummy 106 is used for receiving the second control instruction, carrying an intelligent key matched with the PEPS system vehicle according to the second control instruction, and entering the detection range of the distance sensor to enable the vehicle door of the PEPS system vehicle to reach a second opening condition;

the door handle mechanical arm 105 is configured to receive the third control command, pull the door handle of the PEPS system vehicle according to the third control command, detect a state of the door of the PEPS system vehicle, and determine the performance of the distance sensor at the target field strength according to the state.

Wherein, the second opening condition is that the smart key enters the detection range of the distance sensor and the authentication is passed.

In the embodiment of the invention, a tested vehicle is placed in a testing environment, a distance sensor is arranged in a door handle of a door of the PEPS system vehicle, the distance sensor takes the distance sensor as a center, emits a low-frequency signal in a spherical space with the radius of a preset distance, detects the distance between an intelligent key and the distance sensor, and determines that the intelligent key enters the detection range of the distance sensor when the distance sensor detects that the distance is smaller than the preset distance. And if the identity verification is passed, the ECU determines that a second opening condition of the PEPS system vehicle is met, the ECU sends a vehicle door unlocking instruction to the BCM through the CAN bus, and the BCM controls the vehicle door to be in an unlocking state. If the authentication is not passed, the distance sensor may continue to perform the step of transmitting a low frequency signal to detect the distance between the fob and the distance sensor.

Further, after the second opening condition is reached, whether the door is in the unlocked state or not can be tested through the door handle mechanical arm 105 in the electromagnetic disturbance rejection performance testing device, specifically, the door handle mechanical arm 105 receives the third control command sent by the control module 102, the door handle of the PEPS system vehicle is pulled according to the third control command, the state of the door of the PEPS system vehicle is detected, if the door of the vehicle can be pulled, the state of the door is determined to be in the unlocked state, the performance of the distance sensor is good under the target field strength, if the door of the vehicle cannot be pulled, the state of the door is determined not to be in the unlocked state, and under the target field strength, the distance sensor is subjected to electromagnetic interference in a testing environment, and the performance of the distance sensor is damaged and cannot normally work.

In the embodiment of the invention, the trunk door in the PEPS system vehicle also has the automatic unlocking/locking function, so the electromagnetic interference rejection performance testing device can also test the performance of the induction button and the performance of the distance sensor in the trunk door in the PEPS system vehicle, and the testing method is the same as the testing method for detecting the performance of the induction button and the performance of the distance sensor in the trunk door, and is not repeated here.

The electromagnetic immunity performance testing device can also test the performance of a starting button in the PEPS system vehicle. Specifically, the electromagnetic immunity test apparatus may press a start button through the clamp dummy 106, and test the performance of the start button by detecting the state of the engine.

Therefore, the control module 102 is further configured to send an eighth control command to the jig dummy 106, wherein the eighth control command indicates the movement of the jig dummy 106; when the performance of the start button of the PEPS system vehicle at the target field strength is tested, the clamp dummy 106 is further configured to receive the eighth control command, enter the PEPS system vehicle according to the eighth control command, press the start button of the PEPS system vehicle to enable the PEPS system vehicle to reach the first start condition, detect the state of the engine of the PEPS system vehicle, and determine the performance of the start button at the target field strength according to the state of the engine.

After the clamp dummy 106 enters the system vehicle with the smart key and presses the start button, the ECU in the PEPS system vehicle performs authentication on the smart key carried by the clamp dummy 106, and when the authentication of the smart key passes, the ECU controls the engine to be in a start state. The clamp dummy 106 can detect whether the state of the engine is a starting state by detecting whether the window can be swung down or the car light can be lighted, and the like, and if the clamp dummy 106 detects that the window can be swung down or the car light can be lighted, the engine is determined to be in the starting state, so that the performance of the starting button is good under the target field intensity, if the clamp dummy 106 detects that the window cannot be swung down or the car light cannot be lighted, the engine is determined to be in a non-starting state, and under the target field intensity, the starting button is subjected to electromagnetic interference in a test environment, the performance of the starting button is damaged, and the starting button cannot normally work.

Optionally, the electromagnetic immunity testing apparatus may further press a start button through the mechanical key module 104, and test the performance of the start button by detecting the state of the engine.

Specifically, the method comprises the following steps. The control module 102 is further configured to send a ninth control instruction to the mechanical key module 104, where the ninth control instruction indicates an action of the mechanical key module 104. When the performance of the start button of the PEPS system vehicle at the target field strength is tested, the mechanical key module 104 is further configured to receive the ninth control instruction, enter the PEPS system vehicle according to the ninth control instruction, press the start button of the PEPS system vehicle to enable the PEPS system vehicle to reach the second start condition, detect the state of the engine of the PEPS system vehicle, and determine the performance of the start button at the target field strength according to the state of the engine.

After the mechanical key module 104 carries the intelligent key to enter the system vehicle and the start button is pressed, the ECU in the PEPS system vehicle carries out identity verification on the intelligent key carried by the mechanical key module 104, and when the identity verification of the intelligent key passes, the ECU controls the engine to be in a starting state. The mechanical key module 104 can detect whether the state of the engine is a starting state by detecting whether the window can be swung down or the car light can be lighted, and the like, and if the mechanical key module 104 detects that the window can be swung down or the car light can be lighted, the engine is determined to be the starting state, so that the performance of the starting button is good under the target field intensity, if the mechanical key module 104 detects that the window cannot be swung down or the car light cannot be lighted, the engine is determined to be in a non-starting state, and under the target field intensity, the starting button is subjected to electromagnetic interference in a test environment, the performance of the starting button is damaged, and the starting button cannot normally work.

The usage environment of the electromagnetic immunity testing apparatus is an anechoic chamber environment, that is, when the performance test is performed on each module of the electromagnetic immunity testing apparatus, the performance test is performed in the anechoic chamber environment.

The embodiment of the invention provides an electromagnetic immunity performance testing method for a PEPS system vehicle, which is applied to an electromagnetic immunity performance testing device, wherein the electromagnetic immunity performance testing device comprises a pneumatic module 101, a control module 102, an interference source module 103, a mechanical key module 104, a door handle mechanical arm 105 and a clamp dummy 106; the control module 102 is respectively connected to the pneumatic module 101, the mechanical button module 104, the door handle mechanical arm 105, the clamp dummy 106 and the interference source module 103, and the pneumatic module 101 is respectively connected to the control module 102, the mechanical button module 104, the door handle mechanical arm 105 and the clamp dummy 106; as shown in fig. 2, the method includes:

step 201: the pneumatic module 101 pneumatically powers the mechanical key module 104, the door handle robot 105, the clamp dummy 106, and the interference source module 103.

Step 202: the control module 102 sends a first control instruction indicating the motion of the mechanical key module 104 to the mechanical key module 104, a second control instruction indicating the motion of the clamp dummy 106 to the clamp dummy 106, a third control instruction indicating the motion of the door handle robot arm 105 to the door handle robot arm 105, and a fourth control instruction indicating the first interference signal of the target field intensity sent by the interference source module 103 to the interference source module 103.

Step 203: the interference source module 103 receives the fourth control instruction, and sends out the first interference signal of the target field strength according to the fourth control instruction.

Step 204: when the performance of the induction button of the PEPS system vehicle entering and starting without the key under the target field intensity is tested, the mechanical key module 104 receives the first control instruction, and presses the induction button of the door handle of the PEPS system vehicle according to the first control instruction, so that the door of the PEPS system vehicle reaches a first opening condition.

Step 205: the door handle robot arm 105 receives the third control command, pulls the door handle of the PEPS system vehicle according to the third control command, detects the state of the door of the PEPS system vehicle, and determines the performance of the sensor button at the target field strength according to the state.

Step 206: when the performance of the distance sensor of the PEPS system vehicle under the target field strength is tested, the clamp dummy 106 receives the second control instruction, carries the smart key matched with the PEPS system vehicle according to the second control instruction, and enters the detection range of the distance sensor, so that the door of the PEPS system vehicle reaches a second opening condition.

Step 207: the door handle robot arm 105 receives the third control command, pulls the door handle of the PEPS system vehicle according to the third control command, detects the state of the door of the PEPS system vehicle, and determines the performance of the distance sensor at the target field strength according to the state.

Optionally, the pneumatic module 101 comprises a cylinder 1011 and a pressure regulating valve 1012, the pressure regulating valve 1012 is connected to one end of the cylinder 1011, and the other end of the cylinder 1011 is connected to the control module 102, the mechanical button module 104, the door handle mechanical arm 105 and the clamp dummy 106 respectively;

the pressure regulating valve 1012 regulates the movement pressure of the cylinder 1011;

the control module 102 sends a fifth control instruction to the cylinder 1011, where the fifth control instruction is used to instruct the cylinder 1011 to provide power for the mechanical key module 104, and the fifth control instruction carries the first motion frequency of the cylinder 1011; the cylinder 1011 receives the fifth control command, and compresses air at the first motion frequency under the motion pressure to provide power for the mechanical key module 104;

the control module 102 sends a sixth control command to the cylinder 1011, where the sixth control command is used to instruct the cylinder 1011 to provide power for the door handle mechanical arm 105, and the sixth control command carries a second motion frequency of the cylinder 1011; the cylinder 1011 receives the sixth control command, and compresses air at the second motion frequency under the motion pressure to power the door handle robot 105;

the control module 102 sends a seventh control command to the cylinder 1011, the seventh control command is used for instructing the cylinder 1011 to provide power for the clamp dummy 106, and the seventh control command carries a third motion frequency of the cylinder 1011; the cylinder 1011 receives the seventh control command and compresses air at the third motion frequency at the motion pressure to power the clamp dummy 106.

Optionally, the interferer module 103 includes a signal generator 1031, a power amplifier 1032 and an antenna 1033, where one end of the signal generator 1031 is connected to one end of the power amplifier 1032, and the other end of the power amplifier 1032 is connected to the antenna 1033 and the control module 102, respectively;

the signal generator 1031 generates a second interference signal, and transmits the second interference signal to the power amplifier 1032;

the power amplifier 1032 receives the second interference signal, performs power scaling processing on the second interference signal according to the target field strength to obtain the first interference signal, and sends the first interference signal to the antenna 1033;

the antenna 1033 receives the first interference signal and transmits the first interference signal.

Optionally, the control module 102 sends an eighth control instruction to the jig dummy 106 instructing the jig dummy 106 to act;

when the performance of the start button of the PEPS system vehicle at the target field strength is tested, the clamp dummy 106 receives the eighth control command, enters the PEPS system vehicle according to the eighth control command, presses the start button of the PEPS system vehicle to enable the PEPS system vehicle to reach the first start condition, detects the state of the engine of the PEPS system vehicle, and determines the performance of the start button at the target field strength according to the state of the engine.

Optionally, the control module 102 sends a ninth control instruction indicating the motion of the mechanical key module 104 to the mechanical key module 104;

when the performance of the start button of the PEPS system vehicle at the target field strength is tested, the mechanical key module 104 receives the ninth control instruction, enters the PEPS system vehicle according to the ninth control instruction, presses the start button of the PEPS system vehicle to enable the PEPS system vehicle to reach a second start condition, detects the state of the engine of the PEPS system vehicle, and determines the performance of the start button at the target field strength according to the state of the engine.

In the embodiment of the invention, the electromagnetic interference rejection performance testing device comprises a pneumatic module 101, a control module 102, an interference source module 103, a mechanical key module 104, a door handle mechanical arm 105 and a clamp dummy 106; the pneumatic module 101 provides power to the mechanical key module 104, the door handle mechanical arm 105, the clamp dummy 106 and the interference source module 103 in a pneumatic manner; the control module 102 sends a first control instruction indicating the motion of the mechanical key module 104 to the mechanical key module 104, a second control instruction indicating the motion of the clamp dummy 106 to the clamp dummy 106, a third control instruction indicating the motion of the door handle mechanical arm 105 to the door handle mechanical arm 105, and a fourth control instruction indicating the first interference signal of the target field intensity sent by the interference source module 103 to the interference source module 103; the interference source module 103 receives the fourth control instruction, and sends out a first interference signal of the target field strength according to the fourth control instruction; when the performance of the induction button of the PEPS system vehicle under the target field intensity is tested, the mechanical key module 104 receives the first control instruction, and presses the induction button of the door handle of the PEPS system vehicle according to the first control instruction, so that the door of the PEPS system vehicle reaches a first opening condition; the door handle mechanical arm 105 receives the third control command, pulls the door handle of the PEPS system vehicle according to the third control command, detects the state of the door of the PEPS system vehicle, and determines the performance of the induction button under the target field intensity according to the state; when the performance of the distance sensor of the PEPS system vehicle under the target field intensity is tested, the clamp dummy 106 receives the second control instruction, carries an intelligent key matched with the PEPS system vehicle according to the second control instruction, and enters the detection range of the distance sensor to enable the door of the PEPS system vehicle to reach a second opening condition; the door handle robot arm 105 receives the third control command, pulls the door handle of the PEPS system vehicle according to the third control command, detects the state of the door of the PEPS system vehicle, and determines the performance of the distance sensor at the target field strength according to the state. Therefore, the electromagnetic immunity performance of the PEPS system vehicle is tested under the target field intensity, and the pneumatic module 101 is arranged in the electromagnetic immunity performance testing device, so that power can be provided for the mechanical key module 104, the door handle mechanical arm 105 and the clamp dummy 106 in a pneumatic mode, the electromagnetic environment of an anechoic chamber is not influenced, the requirement on the electromagnetic immunity performance of each module in the electromagnetic immunity performance testing device is lowered, and the expenditure of the electromagnetic immunity performance testing device is saved.

It should be noted that: the electromagnetic immunity performance testing device for the PEPS system vehicle provided in the above embodiment is only illustrated by dividing the functional modules when being used for the electromagnetic immunity performance testing of the PEPS system vehicle, and in practical application, the function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the functions described above. In addition, the electromagnetic immunity performance testing device for the PEPS system vehicle provided in the above embodiment and the embodiment of the electromagnetic immunity performance testing method for the PEPS system vehicle belong to the same concept, and specific implementation processes thereof are detailed in the embodiment of the method and are not described herein again.

It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The electromagnetic disturbance rejection performance testing device for the PEPS system vehicle is characterized by comprising a control module, a mechanical key module, a clamp dummy, a door handle mechanical arm, a pneumatic module and a disturbance source module; the control module is respectively connected with the pneumatic module, the mechanical button module, the doorknob mechanical arm, the clamp dummy and the interference source module, and the pneumatic module is respectively connected with the control module, the mechanical button module, the doorknob mechanical arm and the clamp dummy;

the pneumatic module comprises an air cylinder and a pressure regulating valve for regulating the movement pressure of the air cylinder, the pressure regulating valve is connected with one end of the air cylinder, the other end of the air cylinder is respectively connected with the control module, the mechanical key module, the door handle mechanical arm and the clamp dummy, and the pneumatic module is used for providing power for the mechanical key module, the door handle mechanical arm, the clamp dummy and the interference source module in a pneumatic mode;

the control module is used for sending a first control instruction indicating the action of the mechanical key module to the mechanical key module, sending a second control instruction indicating the action of the fixture dummy to the fixture dummy, sending a third control instruction indicating the action of the doorknob mechanical arm to the doorknob mechanical arm, sending a fourth control instruction indicating that the interference source module sends a first interference signal of a target field intensity to the interference source module, sending an eighth control instruction indicating the action of the fixture dummy to the fixture dummy, and sending a ninth control instruction indicating the action of the mechanical key module to the mechanical key module;

the control module is further configured to send a seventh control instruction to the cylinder, the seventh control instruction is used for instructing the cylinder to provide power for the clamp dummy, and the seventh control instruction carries a third motion frequency of the cylinder; the air cylinder is used for receiving the seventh control instruction and compressing air at the third movement frequency under the movement pressure to power the clamp dummy;

the interference source module comprises a signal generator, a power amplifier and an antenna, wherein one end of the signal generator is connected with one end of the power amplifier, the other end of the power amplifier is respectively connected with the antenna and the control module, the signal generator is used for generating a second interference signal and sending the second interference signal to the power amplifier, the power amplifier is used for receiving the second interference signal, carrying out power scaling processing on the second interference signal according to the target field intensity to obtain a first interference signal, and sending the first interference signal to the antenna, and the antenna is used for receiving the first interference signal and sending the first interference signal;

when the performance of a key-free entering and starting induction button of the PEPS system vehicle under the target field intensity is tested, the mechanical key module is used for receiving the first control instruction, and pressing the induction button of a door handle of the PEPS system vehicle according to the first control instruction so as to enable the door of the PEPS system vehicle to reach a first opening condition, wherein the first opening condition is that the induction button is pressed down and the intelligent key identity verification is passed;

when the performance of the distance sensor of the PEPS system vehicle under the target field intensity is tested, the clamp dummy is used for receiving the second control instruction, carrying an intelligent key matched with the PEPS system vehicle according to the second control instruction, entering a detection range of the distance sensor so as to enable the door of the PEPS system vehicle to reach a second opening condition, wherein the second opening condition is that the intelligent key enters the detection range of the distance sensor and the identity verification is passed;

the door handle mechanical arm is used for receiving the third control command, pulling a door handle of the PEPS system vehicle according to the third control command, detecting the state of a door of the PEPS system vehicle, and determining the performance of the distance sensor under the target field intensity according to the state;

when the performance of the start button of the PEPS system vehicle under the target field intensity is tested, the clamp dummy is further used for receiving the eighth control instruction, entering the PEPS system vehicle according to the eighth control instruction, pressing the start button of the PEPS system vehicle to enable the PEPS system vehicle to reach a first start condition, detecting the state of an engine of the PEPS system vehicle, and determining the performance of the start button under the target field intensity according to the state of the engine;

2. The electromagnetic disturbance rejection performance testing method for the PEPS system vehicle is characterized by being applied to an electromagnetic disturbance rejection performance testing device, wherein the electromagnetic disturbance rejection performance testing device comprises a control module, a mechanical key module, a clamp dummy, a door handle mechanical arm, a pneumatic module and an interference source module; the control module is respectively connected with the pneumatic module, the mechanical button module, the doorknob mechanical arm, the clamp dummy and the interference source module, and the pneumatic module is respectively connected with the control module, the mechanical button module, the doorknob mechanical arm and the clamp dummy;

the pneumatic module comprises an air cylinder and a pressure regulating valve used for regulating the movement pressure of the air cylinder by a pressure regulating valve, the pressure regulating valve is connected with one end of the air cylinder, the other end of the air cylinder is respectively connected with the control module, the mechanical button module, the door handle mechanical arm and the clamp dummy, and the pneumatic module provides power for the mechanical button module, the door handle mechanical arm, the clamp dummy and the interference source module in a pneumatic mode;

the control module sends a first control instruction indicating the action of the mechanical key module to the mechanical key module, a second control instruction indicating the action of the fixture dummy to the fixture dummy, a third control instruction indicating the action of the doorknob mechanical arm to the doorknob mechanical arm, a fourth control instruction indicating that the interference source module sends a first interference signal of a target field intensity to the interference source module, an eighth control instruction indicating the action of the fixture dummy to the fixture dummy, and a ninth control instruction indicating the action of the mechanical key module to the mechanical key module;

the control module sends a seventh control instruction to the air cylinder, the seventh control instruction is used for indicating the air cylinder to provide power for the clamp dummy, and the seventh control instruction carries a third motion frequency of the air cylinder; the air cylinder receives the seventh control command, and compresses air at the third movement frequency at the movement pressure to power the jig dummy;

the interference source module comprises a signal generator, a power amplifier and an antenna, wherein one end of the signal generator is connected with one end of the power amplifier, and the other end of the power amplifier is respectively connected with the antenna and the control module; the signal generator generates a second interference signal and sends the second interference signal to the power amplifier; the power amplifier receives the second interference signal, performs power scaling processing on the second interference signal according to the target field intensity to obtain the first interference signal, and sends the first interference signal to the antenna; the antenna receives the first interference signal and transmits the first interference signal;

when the performance of a key-free entering and starting induction button of a PEPS system vehicle under the target field intensity is tested, the mechanical key module receives the first control instruction, and presses the induction button of a door handle of the PEPS system vehicle according to the first control instruction so as to enable the door of the PEPS system vehicle to reach a first opening condition, wherein the first opening condition is that the induction button is pressed down and the intelligent key identity verification is passed;

when the performance of the distance sensor of the PEPS system vehicle under the target field intensity is tested, the clamp dummy receives the second control instruction, carries an intelligent key matched with the PEPS system vehicle according to the second control instruction, and enters the detection range of the distance sensor to enable the door of the PEPS system vehicle to reach a second opening condition, wherein the second opening condition is that the intelligent key enters the detection range of the distance sensor and the identity verification is passed;

the door handle mechanical arm receives the third control instruction, pulls a door handle of the PEPS system vehicle according to the third control instruction, detects the state of a door of the PEPS system vehicle, and determines the performance of the distance sensor under the target field intensity according to the state;