ICD (interface control document)-oriented RS422 bus signal simulation testing method

A simulation test and bus signal technology, applied in the direction of instruments, simulators, control/adjustment systems, etc., can solve the problems of RS422 data simulation test and the lack of general RS422 signal simulation test equipment, etc., and achieve the effect of reasonable structure and clear hierarchy

Inactive Publication Date: 2017-01-25
SHAANXI QIANSHAN AVIONICS
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Problems solved by technology

[0004] At present, many RS422 bus signal simulation test methods used in avionics systems only realize the basic communication performance test of the RS422 bus, not for specific ICD requirements, and do not perform simulation tests and calculations for...

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  • ICD (interface control document)-oriented RS422 bus signal simulation testing method
  • ICD (interface control document)-oriented RS422 bus signal simulation testing method
  • ICD (interface control document)-oriented RS422 bus signal simulation testing method

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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

[0029] A kind of ICD-oriented RS422 bus signal emulation test method, emulation test is carried out in emulation system, described emulation system comprises tested avionics equipment, test platform and emulator, RS422 bus emulation module is installed in the test platform, is controlled by emulator For control, the simulator sends simulation signals to the avionics equipment under test via the RS422 bus simulation module according to the ICD interface protocol requirements, see the attached figure 1 .

[0030] A kind of ICD-oriented RS422 bus signal simulation test method, working principle and data flow see figure 2 . The simulation test method steps include:

[0031] 1) The simulation system is powered on, and the application layer software interface driven by the RS422 bus module is set in the simul...

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Abstract

The invention relates to an ICD-oriented RS422 bus signal simulation test method. The simulation test is carried out in a simulation system. The simulation system includes a tested avionics equipment, a test platform and a simulator, and an RS422 bus simulation module is installed in the test platform. Controlled by the simulator, the simulator sends the simulation test signal to the avionics equipment under test through the RS422 bus simulation module according to the requirements of the ICD interface protocol. The value is automatically solved and the simulation signal is output and the original code value is recovered as the step of solving the parameter engineering value. Using this method reduces the complexity of the simulation test, not only can carry out the RS422 bus interface communication performance test, but also can carry out the simulation test for the engineering value of the parameters, and comprehensively test the correctness of the ICD interface protocol information.

Description

technical field [0001] The invention belongs to the simulation test technology, and relates to an ICD-oriented RS422 bus signal simulation test method based on a VXI bus module and applied in the technical field of avionics. Background technique [0002] RS422 bus communication technology has been widely used in various aircrafts today, and it is a relatively commonly used data communication bus. [0003] The ICD (Interface Control Document) interface control file describes the definition of the bus data of the avionics system, including the physical layer and logical link layer of the system, the communication protocol of the bus, the verification method, the meaning of the physical quantity parameters of the data, the proportional relationship, the physical quantity Various information such as the unit, coding form, fault code, etc. [0004] At present, many RS422 bus signal simulation test methods used in avionics systems only realize the basic communication performance ...

Claims

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Application Information

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IPC IPC(8): G05B17/02
Inventor 于勇任锋刘生桂
Owner SHAANXI QIANSHAN AVIONICS
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