KR20220084776A - Apparatus and method for generating test case of aigbag system - Google Patents

Abstract

An apparatus and method for generating a test case for an airbag system are disclosed. Airbag system information including at least one of end-of-line (EOL) code information, failure code information, hardware information, and CAN communication information of the airbag system, in an apparatus for generating a test case for an airbag system according to an aspect of the present invention A collection unit receiving the input, extracts the corresponding fault code information for each EOL code through matching of the EOL code information and the fault code information, and uses the extracted fault code information of each EOL code to test case of each EOL code and a test case generator that generates a test case, and a test case converter that converts the test case of the EOL code into a test case of a system under test based on the hardware information and the CAN communication information.

Description

Apparatus and method for generating a test case for an airbag system {APPARATUS AND METHOD FOR GENERATING TEST CASE OF AIGBAG SYSTEM}

The present invention relates to an apparatus and method for generating a test case for an airbag system, and more particularly, to an apparatus and method for generating a test case for an airbag system capable of automatically generating a test case according to the specifications of the airbag system.

The airbag system is a system between the passenger and the airbag so that the airbag can be deployed with an appropriate pressure according to the overall collision information of the vehicle, such as the vehicle's collision speed and collision angle, and the overall occupant information such as the position, posture, and whether or not the seat belt is worn. It is a widely known fact that the length is adjusted according to the distance, passenger posture, and collision situation of the vehicle to promote optimal restraint performance, thereby promoting passenger stability.

And when the acceleration signal of the mechanical or electrical acceleration sensor for detecting a collision is input to the microcomputer through a predetermined interface circuit, the airbag controller (Air bag ECU) for operating such an airbag system determines whether the microcomputer deploys the airbag. According to the result of performing the algorithm for airbag deployment, the current driver for airbag deployment is driven to deploy the airbag.

In fact, when the airbag controller's microcomputer drives the current driver, a strong current (eg, 0.8~2A) flows in the ignition wire of the charge in the airbag module for a predetermined time (eg, 120 ms) or more, and accordingly, the charge explodes and at the same time The generated explosive gas instantly inflates and deploys the airbag.

In addition, the microcomputer of the airbag controller determines whether to deploy the airbag by performing a predetermined algorithm for determining whether to deploy the airbag, while continuously diagnosing whether various circuits required for the deployment of the airbag are faulty, and various circuits necessary for deploying the airbag. If it is determined that a failure has occurred as a result of diagnosing the failure of the airbags, the lamp driver is activated to turn on the airbag failure lamp installed on the instrument panel to inform the driver of the failure status of various circuits necessary for airbag deployment.

However, prior to mounting the airbag system in the vehicle, there is no device for testing the internal defects of the airbag system, that is, disconnection, short circuit, over/under voltage, over/under resistance, and the like. Accordingly, the installation of the airbag system is performed without properly testing the defects, and the malfunction of the airbag is caused in the event of a vehicle crash, thereby threatening the safety of the driver as well as the occupants.

In addition, since the airbag system is a function that is basically installed in all car models for domestic and export use, there are various specifications for each car model. There is a problem that the test cases for each specification could not be applied.

The background technology of the present invention is disclosed in Korean Patent Application Laid-Open No. 2017-0112794 (published on October 12, 2017, an airbag deployment test system mounted on a vehicle and a driving method thereof).

The present invention has been devised to improve the above problems, and it is an object of the present invention to provide an apparatus and method for generating a test case for an airbag system that can automatically generate a test case according to the specifications of the airbag system. will provide

The problem to be solved by the present invention is not limited to the problem(s) mentioned above, and another problem(s) not mentioned will be clearly understood by those skilled in the art from the following description.

Airbag system information including at least one of end-of-line (EOL) code information, failure code information, hardware information, and CAN communication information of the airbag system, in an apparatus for generating a test case for an airbag system according to an aspect of the present invention A collection unit receiving the input, extracts the corresponding fault code information for each EOL code through matching of the EOL code information and the fault code information, and uses the extracted fault code information of each EOL code to test case of each EOL code and a test case generator that generates a test case, and a test case converter that converts the test case of the EOL code into a test case of a system under test based on the hardware information and the CAN communication information.

In the present invention, the collecting unit may check whether the airbag information system has an error based on the format of the received airbag system information.

In the present invention, the failure code information may include at least one of a failure target device, failure type, failure recognition time, and failure release time.

In the present invention, the test case generating unit matches the device of the EOL code information with the device of the failure code information to extract a failure target device matching the EOL code information, and the failure code information on the failure code information You can create a test case for each EOL code with .

In the present invention, the test case generating unit may set each of the failure target device, failure type, failure recognition time, and failure release time as variables, and generate a test case using a combination of each variable.

In the present invention, the test case conversion unit extracts a test case of the EOL code corresponding to the evaluation target system, and derives a connection relationship between devices included in the extracted test case based on the hardware information and CAN communication information. can

According to an aspect of the present invention, there is provided a method for generating a test case of an airbag system, wherein the airbag collecting unit includes at least one of end-of-line (EOL) code information, failure code information, hardware information, and CAN communication information of the airbag system. receiving system information, the test case generator extracts the corresponding fault code information for each EOL code by matching the EOL code information and the fault code information, and uses the extracted fault code information of each EOL code generating a test case of the EOL code; and a test case converter converting the test case of the EOL code into a test case of a system under test based on the hardware information and the CAN communication information.

In the step of receiving the airbag system information, the collecting unit may check whether the airbag information system has an error based on the format of the received airbag system information.

In the present invention, the failure code information may include at least one of a failure target device, failure type, failure recognition time, and failure release time.

In the present invention, in the step of generating the test case, the test case generating unit extracts a failure target device matching the EOL code information by matching the device of the EOL code information with the failure target device of the failure code information, A test case of each EOL code may be generated using the failure code information on the failure target device as a variable.

In the present invention, in the step of generating the test case, the test case generating unit sets each of the failure target device, failure type, failure recognition time, and failure release time as variables, and generates a test case with a combination of each variable can do.

In the present invention, in the step of converting the test case, the test case converting unit extracts a test case of an EOL code corresponding to the evaluation target system, and displays a connection relationship between devices included in the extracted test case to the hardware information and CAN communication information.

The apparatus and method for generating a test case for an airbag system according to an embodiment of the present invention automatically generate a test case according to the specifications of the airbag system, thereby shortening the evaluation period of the airbag system and reducing test errors caused by the evaluator. quality can be improved.

On the other hand, the effects of the present invention are not limited to the above-mentioned effects, and various effects may be included within the range obvious to those skilled in the art from the description below.

1 is a conceptual diagram illustrating an apparatus for generating a test case of an airbag system according to an embodiment of the present invention.
2 is a block diagram schematically showing the configuration of an apparatus for generating a test case of an airbag system according to an embodiment of the present invention.
3 is an exemplary diagram for explaining EOL code information according to an embodiment of the present invention.
4 is an exemplary diagram for explaining fault code information according to an embodiment of the present invention.
5 is an exemplary diagram for explaining a test case according to an embodiment of the present invention.
6 is a flowchart illustrating a method for generating a test case of an airbag system according to an embodiment of the present invention.

Hereinafter, an apparatus and method for generating a test case of an airbag system according to an embodiment of the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of the user or operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

Implementations described herein may be implemented in, for example, a method or process, an apparatus, a software program, a data stream, or a signal. Although discussed only in the context of a single form of implementation (eg, discussed only as a method), implementations of the discussed features may also be implemented in other forms (eg, as an apparatus or program). The apparatus may be implemented in suitable hardware, software and firmware, and the like. A method may be implemented in an apparatus such as, for example, a processor, which generally refers to a computer, a microprocessor, a processing device, including an integrated circuit or programmable logic device, and the like. Processors also include communication devices such as computers, cell phones, portable/personal digital assistants (“PDA”) and other devices that facilitate communication of information between end-users.

1 is a conceptual diagram illustrating an apparatus for generating a test case of an airbag system according to an embodiment of the present invention.

Referring to FIG. 1 , an apparatus 100 for generating a test case of an airbag system according to an embodiment of the present invention receives hardware (HW) information, CAN communication information, specification information, and failure code information of the airbag system, and the A test case according to the airbag controller specification can be generated using the received information. The test case generating apparatus 100 may convert the generated test case into a test case that can be driven in the test target system and output the converted test case.

A detailed description of the airbag system test case generating apparatus 100 will be described with reference to FIG. 2 .

2 is a block diagram schematically showing the configuration of an apparatus for generating a test case of an airbag system according to an embodiment of the present invention, FIG. 3 is an exemplary diagram for explaining EOL code information according to an embodiment of the present invention, FIG. 4 is an exemplary diagram for explaining fault code information according to an embodiment of the present invention, and FIG. 5 is an exemplary diagram for explaining a test case according to an embodiment of the present invention.

Referring to FIG. 2 , the test case generating apparatus 100 of the airbag system according to an embodiment of the present invention may include a collecting unit 110 , a test case generating unit 120 , and a test case converting unit 130 . have.

The collection unit 110 receives airbag system information including at least one of end-of-line (EOL) code information, failure code information, hardware information, and CAN communication information of the airbag system. Here, the EOL code information may mean specification information of the airbag system. The EOL code information may indicate specification information of the airbag system for each EOL code as shown in FIG. 3 .

For example, for EOL code 1, the lamp is on the warning light and front passenger airbag, the switch is on the buckle and front passenger airbag, the crash sensor is on the front of the driver's seat, the squib is on the driver's and front passenger's seat, and the CAN is It has usage information in engine and braking. For EOL code 2, the lamps are on the warning light and front passenger airbag, the switch is on the front passenger airbag, the crash sensors are on the front driver's seat, front passenger's seat and on the driver's side, and the squib is on the driver's seat, front passenger's seat, and driver's knee , CAN has usage information in engine and braking.

The failure code information is information indicating a failure diagnosis function of the airbag system, and may include a failure target device, failure type, failure recognition time, and failure release time, as shown in FIG. 4 . The failure target device may include a driver's seat airbag, a passenger seat airbag, an engine, and the like, and the failure type may include a disconnection and a short circuit.

The hardware information may mean a pin map to know the hardware configuration of the airbag system. The CAN communication information may include information about sensors and controllers connected through CAN communication.

The collection unit 110 may check whether the airbag information system has an error based on the format of the received airbag system information. For example, if the format of the input airbag system information is not the same as the preset format, the collection unit 110 may determine that there is an error in the corresponding information. The collection unit 110 notifies the tester of the error information so that the tester can solve the error.

The test case generator 120 extracts the corresponding fault code information for each EOL code through matching of the EOL code information and the fault code information, and uses the extracted fault code information of each EOL code to generate a test case for each EOL code. can create

The test case generation unit 120 matches the device of EOL code information with the device of failure code information to extract a failure target device matching the EOL code information, and each You can create test cases of EOL code. In this case, the test case generating unit 120 may set each of the failure target device, failure type, failure recognition time, and failure release time as variables, and generate a test case using a combination of each variable.

For example, the test case generator 120 may generate a test case for each EOL code as shown in FIG. 5 . Referring to FIG. 5 , the test case generator 120 may generate a test case 1 for disconnection of the driver's seat airbag and a test case 2 for a power short circuit of the front collision sensor with respect to the EOL code 1 . Also, the test case generator 120 may generate a test case 1 for disconnection of the driver's seat airbag and a test case 2 for a power short circuit of the front collision sensor in EOL code 2 . In this case, the test case generating unit 120 may generate a test case by dividing the failure recognition time and failure release time into a normal case and a failure case.

The test case conversion unit 130 may convert a test case of an EOL code into a test case of a system under test based on hardware information and CAN communication information.

That is, the test case conversion unit 130 extracts a test case of the EOL code corresponding to the system under test and derives a connection relationship between devices included in the extracted test case based on hardware information and CAN communication information, thereby performing the test. It can be converted into test cases of the target system.

For example, if HW1/2/3 and CAN1/2/3 are required for EOL code 1 and HW1/3/4 and CAN2/4/5 are required for EOL code 2, the test case conversion unit 130 may Corresponding hardware (HW) and CAN can be connected according to each EOL code. That is, the test case conversion unit 130 may connect HW1/2/3 and CAN1/2/3 to the test case of EOL code 1, and HW1/3/4, CAN2/4 to the test case of EOL code 2 You can connect /5.

6 is a flowchart illustrating a method for generating a test case of an airbag system according to an embodiment of the present invention.

Referring to FIG. 6 , the collection unit 110 receives airbag system information including at least one of specification information, fault code information, hardware information, and CAN communication information of the airbag system ( S610 ), and the received airbag system information is analyzed to determine whether there is an error (S620). At this time, if the format among the input airbag system information is not the same as the preset format, the collection unit 110 may determine that there is an error in the corresponding information.

When step S620 is performed, the test case generator 120 matches the EOL code information with the failure code information (S630), and extracts the corresponding failure code information for each EOL code (S640). That is, the test case generating unit 120 may extract a failure target device matching the EOL code information by matching the device of the EOL code information and the failure target device of the failure code information.

When step S640 is performed, the test case generator 120 generates a test case of each EOL code by using the extracted fault code information of each EOL code ( 650 ). In this case, the test case generator 120 may generate a test case of each EOL code using the failure code information on the failure target device as a variable. That is, the test case generator 120 may set each of the failure target device, the failure type, the failure recognition time, and the failure release time as variables, and generate a test case using a combination of the variables.

For example, the test case generator 120 may generate a test case for disconnection and a short circuit for the driver's seat airbag. In the case of disconnection of the driver's seat airbag, the test case generating unit 120 sets the normal time and the failure time differently for the failure application time and failure recovery time, and recognizes the test case and failure when recognized as normal. Each test case can be created.

When step S650 is performed, the test case conversion unit 130 extracts a test case of the EOL code corresponding to the system under test (S660), and compares the connection relationship between devices included in the extracted test case to hardware information and CAN communication information It is derived based on (S670). That is, the test case conversion unit 130 may convert the corresponding test case to be drivable in the system under test by referring to the pin map and CAN communication information.

As described above, the apparatus and method for generating a test case for an airbag system according to an exemplary embodiment of the present invention automatically generate a test case according to the specifications of the airbag system, thereby shortening the evaluation period of the airbag system and test errors caused by the evaluator. can be reduced to improve the airbag quality.

Although the present invention has been described with reference to the embodiment shown in the drawings, this is merely exemplary, and it is understood that various modifications and equivalent other embodiments are possible by those of ordinary skill in the art. will understand

Accordingly, the true technical protection scope of the present invention should be defined by the following claims.

100: test case generating device
110: collection unit
120: test case generation unit
130: test case conversion unit

Claims (12)

a collection unit for receiving airbag system information including at least one of end-of-line (EOL) code information, failure code information, hardware information, and CAN communication information of the airbag system;
Test case generation for extracting corresponding fault code information for each EOL code by matching the EOL code information with the fault code information, and generating a test case for each EOL code using the extracted fault code information for each EOL code wealth; and
A test case conversion unit that converts a test case of the EOL code into a test case of a system under test based on the hardware information and CAN communication information
A test case generating device for an airbag system comprising a.
According to claim 1,
The collection unit,
and checking whether the airbag information system has an error based on the received airbag system information format.
According to claim 1,
The fault code information is
An apparatus for generating a test case for an airbag system, comprising at least one of a failure target device, a failure type, a failure recognition time, and a failure clearing time.
4. The method of claim 3,
The test case generation unit,
Matching the device of the EOL code information with the device of the failure code information to extract a failure target device matching the EOL code information, and testing each EOL code using the failure code information for the failure code information as a variable A test case generating device for an airbag system, characterized in that it generates a case.
5. The method of claim 4,
The test case generation unit,
The apparatus for generating a test case for an airbag system, wherein each of the failure target device, failure type, failure recognition time, and failure release time is set as a variable, and a test case is generated by a combination of each variable.
According to claim 1,
The test case conversion unit,
A test case of an airbag system, characterized in that extracting a test case of an EOL code corresponding to the evaluation target system, and deriving a connection relationship between devices included in the extracted test case based on the hardware information and CAN communication information generating device.
receiving, by a collecting unit, airbag system information including at least one of end-of-line (EOL) code information, failure code information, hardware information, and CAN communication information of the airbag system;
The test case generator extracts the corresponding fault code information for each EOL code by matching the EOL code information and the fault code information, and generates a test case of each EOL code using the extracted fault code information of each EOL code. to do; and
converting, by a test case conversion unit, the test case of the EOL code into a test case of the system under test based on the hardware information and CAN communication information
A method of generating a test case for an airbag system comprising a.
8. The method of claim 7,
In the step of receiving the airbag system information,
The method of generating a test case for an airbag system, wherein the collecting unit checks whether the airbag information system has an error based on a format of the received airbag system information.
8. The method of claim 7,
The fault code information is
A method for generating a test case for an airbag system, comprising at least one of a failure target device, a failure type, a failure recognition time, and a failure clearing time.
10. The method of claim 9,
In the step of generating the test case,
The test case generating unit is configured to match the device of the EOL code information with the device of the failure code information to extract a failure target device matching the EOL code information, and use the failure code information for the failure code information as a variable A method of generating a test case for an airbag system, characterized in that it generates a test case for each EOL code.
11. The method of claim 10,
In the step of generating the test case,
The test case generation unit sets each of the failure target device, failure type, failure recognition time, and failure release time as variables, and generates a test case using a combination of each variable. .
8. The method of claim 7,
In the step of converting to the test case,
The test case conversion unit extracts a test case of an EOL code corresponding to the evaluation target system, and derives a connection relationship between devices included in the extracted test case based on the hardware information and CAN communication information How to create a test case for an airbag system.

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