CN112684774A - Calibration and verification system of control module, test method thereof and storage medium - Google Patents
Calibration and verification system of control module, test method thereof and storage medium Download PDFInfo
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Abstract
The invention discloses a calibration and verification system of a control module, a test method thereof and a storage medium, wherein the calibration and verification system comprises an upper computer and an FPGA module, wherein the upper computer is used for simulating peripheral device parameters of a vehicle-mounted safety airbag control module to generate first test information and simulating communication messages sent to the vehicle-mounted safety airbag control module by other controllers of a whole vehicle to generate second test information; the FPGA receives the first test information and the second test information, generates a hard-line signal according to the first test information through a corresponding simulation circuit, converts the second test information into a corresponding communication message through a first communication protocol, inputs the communication message into the vehicle-mounted airbag control module for testing, and sends a test result to the upper computer. Therefore, the calibration and verification system of the vehicle-mounted airbag control module can improve the calibration and verification speed, avoids the cycle limitation of real vehicle verification, and improves the application range and coverage rate of the system.
Description
Technical Field
The invention relates to the technical field of vehicle safety, in particular to a calibration and verification system of a vehicle-mounted airbag control module, a test method of the calibration and verification system of the vehicle-mounted airbag control module and a computer-readable storage medium.
Background
With the increase of the keeping quantity of Chinese automobiles, the number of road traffic accident deaths is always high every year. As a last protective barrier for road traffic accidents, vehicle-mounted airbags have high attention and dependence on the vehicle-mounted airbags. The vehicle-mounted safety airbag is an important component of the passive safety of the whole vehicle, and is very important for the development of the whole vehicle, in the development of the vehicle-mounted safety airbag in the related technology, the calibration and verification of the vehicle-mounted safety airbag are limited by the influence of a real vehicle and an experimental environment, the defects of high cost, low coverage rate and poor efficiency exist, and the real vehicle calibration and verification in the related technology are usually in the later stage of a project, the development risk of an air bag control module is increased, and the development cycle of the whole vehicle is influenced.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, an object of the present invention is to provide a calibration and verification system for a vehicle-mounted airbag control module, which can improve calibration and verification speed, avoid the cycle limitation of real vehicle verification, and improve the application range and coverage rate of the system.
The second purpose of the invention is to provide a test method of a calibration and verification system of a vehicle-mounted safety airbag control module
A third object of the invention is to propose a computer readable storage medium.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides a system for calibrating and verifying a vehicle-mounted airbag control module, the system including: the upper computer is used for simulating peripheral device parameters of the vehicle-mounted airbag control module to generate first test information and simulating communication messages sent to the vehicle-mounted airbag control module by other controllers of the whole vehicle to generate second test information; the FPGA module is communicated with the upper computer to receive the first test information and the second test information, generates a hard wire signal according to the first test information through a corresponding simulation circuit and inputs the hard wire signal to the vehicle-mounted airbag control module, converts the second test information into a corresponding communication message through a first communication protocol and inputs the communication message to the vehicle-mounted airbag control module to test the vehicle-mounted airbag control module, and sends a test result of the vehicle-mounted airbag control module to the upper computer.
The system comprises an upper computer and an FPGA module, wherein the upper computer is in communication connection with the FPGA module and is used for simulating parameters of peripheral devices of a vehicle-mounted airbag control module to generate first test information, and the communication messages sent to the vehicle-mounted airbag control module by other controllers of the whole vehicle are simulated to generate second test information, the FPGA module receives the first test information and the second test information generated by the upper computer, and generates hard-line information according to the first test information through a corresponding simulation circuit and inputs the hard-line information into a vehicle-mounted safety airbag control module, the FPGA module converts the second test information into a corresponding communication message through a first communication protocol and inputs the communication message into the vehicle-mounted safety airbag control module, the vehicle-mounted safety airbag control module is tested, and finally the test result of the vehicle-mounted safety airbag control module is sent to the upper computer. Therefore, the calibration and verification system of the vehicle-mounted airbag control module can improve the calibration and verification speed, avoids the cycle limitation of real vehicle verification, and improves the application range and coverage rate of the system.
In some examples of the present invention, the peripheral device parameters of the vehicle-mounted airbag control module include acceleration sensor parameters and seat belt switch parameters of each position of the entire vehicle, the corresponding simulation circuit includes a seat belt switch simulation circuit and an acceleration sensor simulation circuit, the acceleration sensor simulation circuit is configured to simulate the acceleration information in the first test information to output an acceleration simulation signal to the vehicle-mounted airbag control module, and the seat belt switch simulation circuit is configured to simulate the seat belt switch information in the first test information to output a seat belt switch simulation signal to the vehicle-mounted airbag control module.
In some examples of the invention, the FPGA module comprises: the universal serial port communication unit is used for establishing serial port communication between the FPGA module and the upper computer; the processing unit is used for determining the signal types of the first test information and the second test information and forwarding the signal types according to the signal types; the safety belt analog output unit is used for converting the safety belt switch information forwarded by the processing unit into a switch control signal and outputting the switch control signal to the safety belt switch simulation circuit; the acceleration sensor signal output unit is used for converting the acceleration information forwarded by the processing unit into a PWM signal according to a second communication protocol and outputting the PWM signal to the acceleration sensor simulation circuit; the communication bus unit is used for converting the second test information forwarded by the processing unit into a bus message and outputting the bus message to the vehicle-mounted airbag control module; and the hard wire input unit is used for sending the test result processed by the processing unit to the upper computer through the universal serial port communication unit.
In some examples of the invention, the first communication protocol is a CAN bus protocol and the second communication protocol is a PSI5 protocol.
In some examples of the invention, the acceleration sensor simulation circuit includes: the control electrode of the first switch tube is connected with the FPGA module; one end of the first resistor is connected with the first pole of the first switching tube; and one end of the second resistor is connected with one end of the first resistor, the other end of the second resistor is connected with the second pole of the first switching tube, and two ends of the second resistor are connected to the vehicle-mounted airbag control module.
In some examples of the invention, the seat belt switch emulation circuit comprises: a first resistor having one end connected to a power source terminal; one end of the first controllable switch is connected with the other end of the first resistor and is provided with a first node, the other end of the first controllable switch is grounded, the control end of the first controllable switch is connected with the FPGA module, and the first node is connected with the vehicle-mounted airbag control module.
In order to achieve the above object, a second aspect of the present invention provides a testing method for a calibration and verification system of a vehicle-mounted airbag control module according to the above embodiment, including the following steps: receiving first test information and second test information, wherein the first test information is generated by simulating peripheral device parameters of the vehicle-mounted airbag control module, and the second test information is generated by simulating communication messages sent to the vehicle-mounted airbag control module by other controllers of the whole vehicle; generating a hard-line signal according to the first test information through a corresponding simulation circuit, inputting the hard-line signal into the vehicle-mounted airbag control module, converting the second test information into a corresponding communication message through a first communication protocol, and inputting the communication message into the vehicle-mounted airbag control module to test the vehicle-mounted airbag control module; and receiving the test result of the vehicle-mounted safety airbag control module, and sending the test result of the vehicle-mounted safety airbag control module to an upper computer for displaying.
According to the test method, first test information and second test information are received, wherein the first test information is generated by simulating peripheral device parameters of the vehicle-mounted airbag control module, and the second test information is generated by simulating communication messages sent to the vehicle-mounted airbag control module by other controllers of the whole vehicle. After the first test information and the second test information are received, a corresponding simulation circuit generates a hard-wire signal according to the first test information and inputs the hard-wire signal into the vehicle-mounted safety airbag control module, the second test information is converted into a corresponding communication message through a first communication protocol and is input into the vehicle-mounted safety airbag control module, and therefore the vehicle-mounted safety airbag control module is tested. And receiving the test result of the vehicle-mounted airbag control module, and sending the test result of the vehicle-mounted airbag control module to an upper computer for displaying. Therefore, the testing method of the calibration and verification system of the vehicle-mounted airbag control module can improve the calibration and verification speed, avoids the cycle limitation of real vehicle verification, and improves the application range and coverage rate of the system.
In some examples of the present invention, the peripheral device parameters of the vehicle-mounted airbag control module include an acceleration sensor parameter and a seat belt switch parameter at each position of the entire vehicle, and the corresponding simulation circuit includes a seat belt switch simulation circuit and an acceleration sensor simulation circuit, wherein converting the first test information into a hard-wired signal to be input to the vehicle-mounted airbag control module includes: and simulating the acceleration information in the first test information through the acceleration sensor simulation circuit to output an acceleration simulation signal to the vehicle-mounted airbag control module, and simulating the safety belt switch information in the first test information through the safety belt switch simulation circuit to output a safety belt switch simulation signal to the vehicle-mounted airbag control module.
In some examples of the invention, before converting the first test information and the second test information, signal types of the first test information and the second test information are also determined and forwarded according to the signal types.
In order to achieve the above object, a third aspect of the present invention provides a computer-readable storage medium, on which a test program of a calibration and verification system of an in-vehicle airbag control module is stored, where the test program, when executed by a processor, implements a test method of the calibration and verification system of the in-vehicle airbag control module according to the above embodiment.
According to the computer-readable storage medium provided by the embodiment of the invention, the processor executes the test program stored on the storage medium, so that the calibration and verification speed of the vehicle-mounted airbag control module can be improved, the cycle limit of real vehicle verification is avoided, and the application range and the coverage rate of the system are improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a block diagram of a calibration and verification system for an in-vehicle airbag control module according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an acceleration sensor simulation circuit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a seat belt switch emulation circuit in accordance with one embodiment of the present invention;
FIG. 4 is a block diagram of the mechanism of an FPGA module of one embodiment of the present invention;
fig. 5 is a flowchart of a testing method of a calibration and verification system of an in-vehicle airbag control module according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The following describes a calibration and verification system of a control module, a test method thereof, and a storage medium according to an embodiment of the present invention with reference to the drawings.
Fig. 1 is a block diagram of a calibration and verification system of an in-vehicle airbag control module according to an embodiment of the present invention.
As shown in fig. 1, a calibration and verification system 100 for a vehicle-mounted airbag control module includes an upper computer 101 and an FPGA module 102.
The upper computer 101 is used for simulating peripheral device parameters of the vehicle-mounted airbag control module to generate first test information, and simulating communication messages sent to the vehicle-mounted airbag control module by other controllers of the whole vehicle to generate second test information; the FPGA module 102 communicates with the upper computer 101 to receive the first test information and the second test information, generates a hard-line signal according to the first test information through a corresponding simulation circuit and inputs the hard-line signal to the vehicle-mounted airbag control module, converts the second test information into a corresponding communication message through a first communication protocol and inputs the communication message to the vehicle-mounted airbag control module to test the vehicle-mounted airbag control module, and sends a test result of the vehicle-mounted airbag control module to the upper computer 101.
Specifically, the upper computer 101 is in communication connection with the FPGA module 102, and peripheral device parameters of the vehicle-mounted airbag control module can be simulated through software on the upper computer 101 to generate first test information. The upper computer 101 can also simulate communication messages sent to the vehicle-mounted airbag control module by other controllers of the whole vehicle to generate second test information. It should be noted that the parameters of the peripheral devices of the vehicle-mounted airbag control module may include parameters of acceleration sensors at various positions of the entire vehicle and parameters of safety belt switches, and it is understood that, except for the peripheral devices, other controllers of the vehicle-mounted airbag control module are other controllers of the entire vehicle in this embodiment. After the FPGA module 102 acquires the first test information and the second test information generated by the upper computer 101, the corresponding simulation circuit generates a hard-line signal according to the first test information and inputs the hard-line signal into the vehicle-mounted airbag control module, and the first communication protocol converts the second test information into a corresponding communication message and inputs the communication message into the vehicle-mounted airbag air module, so as to test the vehicle-mounted airbag control module, and after the vehicle-mounted airbag control module completes the test, the test result is sent to the upper computer 101.
In some embodiments, the peripheral device parameters of the vehicle-mounted airbag control module include acceleration sensor parameters and seat belt switch parameters of each position of the entire vehicle, the corresponding simulation circuit includes a seat belt switch simulation circuit and an acceleration sensor simulation circuit, the acceleration sensor simulation circuit is configured to simulate an acceleration simulation signal according to acceleration information in the first test information and send the acceleration simulation signal to the vehicle-mounted airbag control module, and the seat belt switch simulation circuit is configured to simulate a seat belt switch simulation signal according to seat belt switch information in the first test information and send the seat belt switch simulation signal to the vehicle-mounted airbag control module.
Specifically, the simulation circuit corresponding to the peripheral device of the vehicle-mounted airbag control module comprises a safety belt switch simulation circuit and an acceleration sensor simulation circuit, and the peripheral device parameters of the vehicle-mounted airbag control module comprise acceleration sensor parameters of each position of the whole vehicle and safety belt switch parameters, wherein the safety belt switch simulation circuit can simulate safety belt switch signals, and the acceleration sensor simulation circuit can simulate acceleration sensor signals of each position of the whole vehicle. More specifically, the upper computer can send the first test information to an FPGA module in communication connection with the upper computer, and then the FPGA module simulates an acceleration simulation signal through an acceleration sensor simulation circuit according to acceleration information in the first test information and outputs the acceleration simulation signal to a vehicle-mounted airbag control module; similarly, the FPGA module can simulate a safety belt switch simulation signal through a safety belt switch simulation circuit according to the safety belt switch information in the first test information, and outputs the safety belt switch simulation signal to the vehicle-mounted safety airbag control module. It can be understood that after the vehicle-mounted airbag control module receives the acceleration simulation signal and the safety belt switch simulation signal, the acceleration simulation signal and the safety belt switch simulation signal can be processed according to design requirements, and then a processing result is fed back to the FPGA module, and the FPGA module can adjust the simulation circuit according to the processing result fed back by the vehicle-mounted airbag control module and further test information. It can be understood that the other controllers of the entire vehicle are also correspondingly provided with the simulation circuit, the second test information can be processed by the same processing method as the first test information, and the specific processing method may refer to the processing method of the first test information, which is not described herein again.
In some embodiments of the present invention, as shown in fig. 2 and 3, the acceleration sensor simulation circuit 10 includes a first switch transistor T1, a first resistor R1, and a second resistor R2. Wherein, the control electrode of the first switch tube T1 is connected with the FPGA module 102; one end of the first resistor R1 is connected to the first pole of the first switch transistor T1; one end of the second resistor R2 is connected to one end of the first resistor R1, the other end of the second resistor R2 is connected to the second pole of the first switch transistor T1, and both ends of the second resistor R2 are connected to the vehicle airbag control module. The seat belt switch emulation circuit 20 includes a first resistor R10 and a first controllable switch Q1. Wherein, one end of the first resistor R10 is connected to the power supply end; one end of the first controllable switch Q1 is connected with the other end of the first resistor R10 and is provided with a first node, the other end of the first controllable switch Q1 is grounded, the control end of the first controllable switch Q1 is connected with the FPGA module, and the first node is connected with the vehicle-mounted airbag control module.
Specifically, as shown in fig. 2, after receiving the acceleration information of the upper computer, the FPGA module 102 may convert the acceleration information into a PWM signal according to a communication protocol and output the PWM signal to the first switch tube T1, the first switch tube T1 changes a change of a current and/or a voltage inside the acceleration sensor simulation circuit 10 in an on-off manner, and the vehicle airbag control module may recognize a current acceleration simulation signal according to the communication protocol according to the change of the current and/or the voltage, and then determine whether the vehicle airbag control module needs to output an ignition signal according to the acceleration simulation signal, so as to achieve an effect of simulating a collision. As shown in fig. 3, after the seat belt switch simulation circuit 20 receives the seat belt switch information, the FPGA module may control the on/off of the first controllable switch Q1 according to the communication protocol, the vehicle-mounted airbag control module may recognize a seat belt switch simulation signal according to the on/off state of the first controllable switch Q1, and if the seat belt switch simulation signal indicates that the seat belt is not fastened, a seat belt fastening signal may be input and fed back to the FPGA module.
Optionally, the signal received by the FPGA module may be displayed on an upper computer.
In some embodiments of the present invention, as shown in fig. 4, the FPGA module 102 includes a universal serial communication unit 1021, a processing unit 1022, a seat belt analog output unit 1023, an acceleration sensor signal output unit 1024, a communication bus unit 1025, and a hard-wired input unit 1026.
The universal serial port communication unit 1021 is used for establishing serial port communication between the FPGA module 102 and the upper computer 101; the processing unit 1022 is configured to determine signal types of the first test information and the second test information, and forward the signal types according to the signal types; the safety belt analog output unit 1023 is used for converting the safety belt switch information forwarded by the processing unit 1022 into a switch control signal and outputting the switch control signal to the safety belt switch simulation circuit; the acceleration sensor signal output unit 1024 is configured to convert the acceleration information forwarded by the processing unit 1022 into a PWM signal according to a second communication protocol and output the PWM signal to the acceleration sensor simulation circuit; the communication bus unit 1025 is configured to convert the second test information forwarded by the processing unit 1022 into a bus message and output the bus message to the vehicle-mounted airbag control module 103; the hard-wired input unit 1026 is configured to send the test result processed by the processing unit 1022 to the upper computer 101 through the universal serial communication unit 1021.
Specifically, first, the upper computer 101 sends the first test information and the second test information to the FPGA module 102 through the universal serial port communication unit 1021, the processing unit 1022 determines the types of the first test information and the second test information and forwards the first test information and the second test information according to the signal types, wherein the seat belt switch information can be forwarded to the seat belt analog output unit 1023 to be converted into a switch control signal to be output to the seat belt switch analog circuit, the acceleration information can be forwarded to the acceleration sensor signal output unit 1024 to be converted into a PWM signal to be output to the acceleration sensor analog circuit, the second test information can be converted into a bus message according to the second communication protocol through the communication bus unit 1025 to be output to the vehicle-mounted airbag control module 103, and the vehicle-mounted airbag control module 103 judges whether a seat belt fastening signal, a seat belt, And the vehicle-mounted safety airbag control module ignites and outputs a signal and the like. After the processing unit 102 processes the information and obtains the test result, the hard-wired input unit 1026 may send the test result to the upper computer 101 through the universal serial communication unit 1021, and the upper computer may display the test result.
It should be noted that, in the above embodiment, the first communication protocol is a CAN (Controller Area Network) bus protocol, and the second communication protocol is a PSI5 protocol. And the upper computer can utilize Python language to develop and realize the serial port protocol communicated with the FPGA module.
In conclusion, the calibration and verification system of the vehicle-mounted airbag control module in the embodiment can improve the calibration and verification speed, avoids the cycle limitation of real vehicle verification, and improves the application range and coverage rate of the system.
Fig. 5 is a flowchart of a testing method of a calibration and verification system of an in-vehicle airbag control module according to an embodiment of the present invention.
Further, an embodiment of the present invention provides a test method for a calibration and verification system of a vehicle-mounted airbag control module, where the test method is applied to the calibration and verification system of the vehicle-mounted airbag control module in the above-mentioned embodiment, and the test method includes the following steps:
and S10, receiving first test information and second test information, wherein the first test information is generated by simulating peripheral device parameters of the vehicle-mounted airbag control module, and the second test information is generated by simulating communication messages sent to the vehicle-mounted airbag control module by other controllers of the whole vehicle. And S20, generating a hard-wire signal according to the first test information through a corresponding simulation circuit, inputting the hard-wire signal into the vehicle-mounted airbag control module, converting the second test information into a corresponding communication message through a first communication protocol, and inputting the communication message into the vehicle-mounted airbag control module to test the vehicle-mounted airbag control module. And S30, receiving the test result of the vehicle-mounted airbag control module, and sending the test result of the vehicle-mounted airbag control module to an upper computer for display.
Specifically, first test information and second test information sent by the upper computer are received, and then the first test information is converted according to a corresponding simulation circuit, wherein the first test information is formed by simulating parameters of peripheral devices of the vehicle-mounted airbag control module, and then the simulation circuit of the peripheral devices can be used for carrying out simulation conversion on the first test information. The second test information is generated by simulating communication messages sent to the vehicle-mounted airbag control module by other controllers of the whole vehicle, and then the second test information is converted into corresponding communication messages through the first communication protocol and is input into the vehicle-mounted airbag control module to test the vehicle-mounted airbag control module, wherein the first communication protocol CAN be a CAN bus protocol. And after the vehicle-mounted airbag control module completes the test, receiving the test result of the vehicle-mounted airbag control module, and sending the test result of the vehicle-mounted airbag control module to an upper computer for display.
In some embodiments of the present invention, the peripheral device parameters of the vehicle airbag control module include acceleration sensor parameters and seat belt switch parameters at each position of the entire vehicle, and the corresponding simulation circuit includes a seat belt switch simulation circuit and an acceleration sensor simulation circuit, wherein the converting of the first test information into a hard-wired signal is input to the vehicle airbag control module, including: the acceleration sensor simulation circuit simulates acceleration information in the first test information to output an acceleration simulation signal to the vehicle-mounted airbag control module, and the safety belt switch simulation circuit simulates safety belt switch information in the first test information to output a safety belt switch simulation signal to the vehicle-mounted airbag control module.
In some embodiments of the present invention, before converting the first test information and the second test information, signal types of the first test information and the second test information are also determined and forwarded according to the signal types.
It should be noted that, as another specific embodiment of the testing method according to the embodiment of the present invention, reference may be made to the specific implementation of the calibration and verification system of the vehicle-mounted airbag control module in the foregoing embodiment.
In conclusion, the testing method of the calibration and verification system of the vehicle-mounted airbag control module in the embodiment can improve the calibration and verification speed, avoids the cycle limitation of real vehicle verification, and improves the application range and coverage rate of the system.
Further, the present invention provides a computer-readable storage medium on which a test program of a calibration and verification system of a vehicle airbag control module is stored, the test program, when executed by a processor, implementing a test method of the calibration and verification system of the vehicle airbag control module as in the above embodiments.
The computer-readable storage medium of the embodiment of the invention executes the test program of the calibration and verification system of the vehicle-mounted airbag control module stored on the storage medium through the processor, so that the calibration and verification speed can be improved, the cycle limit of real vehicle verification is avoided, and the application range and the coverage rate of the system are improved.
It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A calibration and verification system for a vehicle-mounted airbag control module is characterized by comprising:
the upper computer is used for simulating peripheral device parameters of the vehicle-mounted airbag control module to generate first test information and simulating communication messages sent to the vehicle-mounted airbag control module by other controllers of the whole vehicle to generate second test information;
the FPGA module is communicated with the upper computer to receive the first test information and the second test information, generates a hard-line signal according to the first test information through a corresponding simulation circuit and inputs the hard-line signal to the vehicle-mounted airbag control module, converts the second test information into a corresponding communication message through a first communication protocol and inputs the corresponding communication message to the vehicle-mounted airbag control module to test the vehicle-mounted airbag control module, and sends a test result of the vehicle-mounted airbag control module to the upper computer.
2. The system for calibrating and verifying the vehicle-mounted airbag control module according to claim 1, wherein the parameters of peripheral devices of the vehicle-mounted airbag control module include parameters of an acceleration sensor and parameters of a seat belt switch at each position of the vehicle, the corresponding simulation circuit includes a seat belt switch simulation circuit and an acceleration sensor simulation circuit, the acceleration sensor simulation circuit is configured to simulate acceleration information in the first test information to output an acceleration simulation signal to the vehicle-mounted airbag control module, and the seat belt switch simulation circuit is configured to simulate seat belt switch information in the first test information to output a seat belt switch simulation signal to the vehicle-mounted airbag control module.
3. The system for calibrating and verifying a vehicle airbag control module of claim 2, wherein the FPGA module comprises:
the universal serial port communication unit is used for establishing serial port communication between the FPGA module and the upper computer;
the processing unit is used for determining the signal types of the first test information and the second test information and forwarding the signal types according to the signal types;
the safety belt analog output unit is used for converting the safety belt switch information forwarded by the processing unit into a switch control signal and outputting the switch control signal to the safety belt switch simulation circuit;
the acceleration sensor signal output unit is used for converting the acceleration information forwarded by the processing unit into a PWM signal according to a second communication protocol and outputting the PWM signal to the acceleration sensor simulation circuit;
the communication bus unit is used for converting the second test information forwarded by the processing unit into a bus message and outputting the bus message to the vehicle-mounted airbag control module;
and the hard wire input unit is used for sending the test result processed by the processing unit to the upper computer through the universal serial port communication unit.
4. The system for calibrating and verifying the vehicle airbag control module of claim 3, wherein the first communication protocol is a CAN bus protocol and the second communication protocol is a PSI5 protocol.
5. The system for calibrating and verifying a vehicle airbag control module according to claim 2, wherein the acceleration sensor simulation circuit comprises:
the control electrode of the first switch tube is connected with the FPGA module;
one end of the first resistor is connected with the first pole of the first switching tube;
and one end of the second resistor is connected with one end of the first resistor, the other end of the second resistor is connected with the second pole of the first switching tube, and two ends of the second resistor are connected to the vehicle-mounted airbag control module.
6. The system for calibration and verification of a vehicle airbag control module according to claim 2, wherein the seatbelt switch emulation circuit comprises:
a first resistor having one end connected to a power source terminal;
one end of the first controllable switch is connected with the other end of the first resistor and is provided with a first node, the other end of the first controllable switch is grounded, the control end of the first controllable switch is connected with the FPGA module, and the first node is connected with the vehicle-mounted airbag control module.
7. A test method of a calibration and verification system of a vehicle airbag control module according to any one of claims 1 to 6, characterized by comprising the steps of:
receiving first test information and second test information, wherein the first test information is generated by simulating peripheral device parameters of the vehicle-mounted airbag control module, and the second test information is generated by simulating communication messages sent to the vehicle-mounted airbag control module by other controllers of the whole vehicle;
generating a hard-line signal according to the first test information through a corresponding simulation circuit, inputting the hard-line signal into the vehicle-mounted airbag control module, converting the second test information into a corresponding communication message through a first communication protocol, and inputting the communication message into the vehicle-mounted airbag control module to test the vehicle-mounted airbag control module;
and receiving the test result of the vehicle-mounted safety airbag control module, and sending the test result of the vehicle-mounted safety airbag control module to an upper computer for displaying.
8. The method according to claim 7, wherein the parameters of the peripheral devices of the vehicle-mounted airbag control module include parameters of an acceleration sensor and parameters of a seat belt switch of each position of the whole vehicle, and the corresponding simulation circuit includes a seat belt switch simulation circuit and an acceleration sensor simulation circuit, wherein converting the first test information into a hard-wired signal to be input to the vehicle-mounted airbag control module comprises:
and simulating an acceleration simulation signal according to the acceleration information in the first test information by the acceleration sensor simulation circuit and sending the acceleration simulation signal to the vehicle-mounted safety airbag control module, and simulating a safety belt switch simulation signal according to the safety belt switch information in the first test information by the safety belt switch simulation circuit and sending the safety belt switch simulation signal to the vehicle-mounted safety airbag control module.
9. The test method of claim 8, wherein prior to converting the first test information and the second test information, signal types of the first test information and the second test information are also determined and forwarded according to the signal types.
10. A computer-readable storage medium, on which a test program of a calibration and verification system of an in-vehicle airbag control module is stored, the test program, when executed by a processor, implementing a test method of the calibration and verification system of the in-vehicle airbag control module according to any one of claims 7 to 9.
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