CN106874178A - A kind of flight control system BIT automated testing method abstract based on object - Google Patents

Abstract

The invention belongs to computer technology, and relates to an object abstraction-based flight control system BIT (in-machine self-test) automatic test method and a device for object abstraction-based flight control system BIT automatic test, including a data abstraction module, a translation module and A detection module, the abstraction module performs data abstraction on the test object, the translation module uses the mapping specification to translate the information in the requirement description text of the specification language into device instructions, and the detection module drives the device based on the device instruction set generated by the translation module complete test. This method uses an abstract method to describe the requirements, the requirements are standardized and accurate, and there is no ambiguity; the customized script translation rules realize the mapping of requirements and codes, eliminating the possibility of errors in manual coding; using scripts to realize The scanning of requirements and the automatic realization of requirements not only improve the efficiency but also ensure that the realization is error-free.

Description

A BIT automated test method for flight control system based on object abstraction

1. Technical field

The invention belongs to computer technology, and relates to an object abstraction-based flight control system BIT (in-machine self-test) automatic test method and an object abstraction-based flight control system BIT automatic test device.

2. Background technology

As fly-by-wire flight control systems become increasingly complex, it is necessary to test all flight control components regularly or irregularly, and determine whether the aircraft can take off through the test results. At present, the software-driven hardware test method is used to complete the BIT test of the flight control system. The test process is to test all the components involved in the flight control system one by one in a certain order until all components are tested.

But the above test method has the following problems:

As the flight control system becomes more and more complex and the requirements for test coverage become higher and higher, there are more and more types of test objects, and more and more steps to be tested for test objects. An aircraft often contains hundreds of different tests. Object, each test object has dozens of test steps, so it is often necessary to design thousands of test steps for one test, and write different codes for each step, which makes BIT software design, maintenance and modification more and more difficult.

3. Contents of the invention

1. The technical problem to be solved in the present invention:

Aiming at the situation that the flight control system has numerous test objects, cumbersome test steps, difficult test maintenance and complex test software design in the BIT test process of the flight control system, the invention designs an object abstraction-based BIT automatic test method of the flight control system.

2. Technical scheme of the present invention:

The present invention provides a kind of flight control system BIT (built-in self-test) automatic test method based on object abstraction, specifically comprises the following steps

Step 1 abstracts the data of the test object, and each test object can be abstracted into a combination of analog and digital, so that the test method can be abstracted into analog and digital tests, so the complex multiple object detection process can be abstracted For multiple read and write operations of analog and digital quantities, form a specification language requirement description text;

Step 2 formulate a script scanning mapping specification to realize the one-to-one mapping between the requirement description text of the specification language and the device instruction;

Step 3 uses the mapping specification to translate the information in the requirement description text of the specification language into device instructions;

Step 4 drives the device to complete the test based on the above-mentioned automatically generated device instruction set.

Wherein: the step 1 abstracts the test object data, including abstracting any detection process as: "setting the digital output address AAA output value BBB" or "setting the analog output address AAA output value BBB" or "reading the analog Input address AAA input value should be BBB" "read digital input address AAA input value should be BBB" any one or a combination of several.

The present invention also includes a device for BIT automated testing of the flight control system based on object abstraction. The device specifically includes a data abstraction module, a translation module, and a detection module. The specification translates the information in the requirement description text of the specification language into equipment instructions, and the detection module drives the equipment to complete the test based on the equipment instruction set generated by the translation module.

3. Beneficial effects of the present invention:

1) Use an abstract method to describe the requirements, the requirements specification is accurate, and there is no ambiguity;

2) Customized script translation rules realize the mapping of requirements and codes, eliminating the possibility of errors in manual coding;

3) Use scripts to scan requirements and automate requirements, which not only improves efficiency but also ensures that there are no errors in implementation.

4. Description of drawings

Fig. 1 is the main program flowchart of the present invention;

Fig. 2 is a schematic diagram of the device of the present invention;

Among them, 1 is the data abstraction module, 2 is the translation module, and 3 is the detection module.

5. Specific implementation

The following is a detailed description through an example.

Assume that the original requirements of a test object in BIT are as follows:

It is necessary to test the BIT test stimulus; before performing the BIT test stimulus test, it is necessary to turn on the test stimulus permission switch and test whether the test wrap is correct when the test stimulus is 10V; at the same time, after the test wrap is over, it is necessary to test when the test stimulus permission switch is turned off After that, test whether the excitation wrap is 0V. Tests whether the stimulus allows switch wraparound to 0.

According to the above information, the test process is divided and described in a standardized manner, as shown in Table 2 and Table 3 below

According to the original requirements, the test is divided into 8 test steps, as shown in Table 1 below, and these actions need to be completed in order.

Table 1 Example table of test content

serial number content 1 Set the test stimulus enable switch (address 0x263002) to 1 2 Send test stimulus (address 0x353001) is 10V 3 Read Test Stimulus Wrap (0x286001) should be 10V 4 Read test stimulus enable switch wraparound (0x333007) should be 1 5 Set the BIT_MODE_SW (address 0x263002) switch to 0 6 Send test stimulus (address 0x353001) is 10V 7 Read test stimulus wrap (address 0x286001) should be 0V 8 Read test stimulus enable switch wraparound (0x333007) should be 0

Abstract according to the test object in Table 2 above. The abstract results are shown in Table 2 below:

Table 2 Abstract results of requirements

Second, formulate a script scanning mapping specification to realize the one-to-one mapping between the requirement description text of the specification language and the device instruction;

As shown in Table 3, the principle of script translation is as follows, scan the description of the requirements of the specification, scan the abstract requirements of Table 2 according to the following scanning specifications, and map and call the driver function:

Table 3 Script scan specification

Third, use the mapping to translate the requirement description text information of the specification language to generate a device instruction set.

Use the mapping relationship in Table 3 to scan the requirements in Table 2, and automatically generate the device instruction set shown in Table 4 below.

Table 4 The results of generating device instruction sets

Fourth, the device is driven to complete the test based on the above-mentioned automatically generated device instruction set.

The detection module reads the generated device instructions one by one in order to form a device instruction set, and drives the device to complete automatic detection based on the formed device instruction set.

Claims (3)

1. a kind of self-detection automatic testing method in the flight control system machine based on object abstraction, it is characterized in that, comprises the following steps: Step 1. Data abstraction of test objects, each test object can be abstracted into a combination of analog and digital, so that the test method can be abstracted into analog and digital tests, so the complex multiple object detection process can be abstracted For multiple read and write operations of analog and digital quantities, form a specification language requirement description text; Step 2 Formulate the script scanning mapping specification to realize the one-to-one mapping between the requirement description text of the specification language and the device instruction; Step 3: Use the mapping specification to translate the information in the requirement description text of the specification language into equipment instructions; Step 4 Drive the device to complete the test based on the above-mentioned automatically generated device instruction set. 2. The method according to claim 1, wherein said step 1 abstracts the data of the test object, including abstracting any detection process as: "setting digital output address AAA output value BBB" or "setting analog Output address AAA output value BBB" or "read analog input address AAA input value should be BBB" "read digital input address AAA input value should be BBB" any one or a combination of several. 3. A device for BIT automated testing of the flight control system based on object abstraction, characterized in that it comprises a data abstraction module, a translation module and a detection module, the abstraction module carries out data abstraction with the test object, and the translation module utilizes the mapping specification The information in the requirement description text of the specification language is translated into equipment instructions, and the detection module drives the equipment to complete the test based on the equipment instruction set generated by the translation module.