Method for constructing cabin pressure control system application software virtual test environment

Abstract

The invention discloses a method for constructing a cabin pressure control system application software virtual test environment. The method comprises the following steps: to begin with, constructing acomprehensive airborne electronic system network structure having a cabin pressure control system, and constructing interfaces associated with the cabin pressure control system; then, constructing avirtual target machine associated with the cabin pressure control system, forming an embedded operating system and constructing a simulation control and display module according to the network structure; constructing a peripheral device model library; then, establishing a fault model of all systems, and developing a dynamic link library to form an interface for the cabin pressure control system and the embedded operating system; and finally, integrating auxiliary test tools for testing cabin pressure control system software. The method can independently and fully complete test of configurationitems of airborne software of the cabin pressure control system in the virtual test environment or system without being influenced by system real operation environment.

Description

technical field [0001] The invention belongs to the technical field of airborne system software testing, and in particular relates to a method for constructing a virtual testing environment for cabin pressure control system application software. Background technique [0002] The application software of the tanker cabin pressure control system realizes the automatic control and monitoring functions of the cabin pressure control system, which mainly realizes the following functions: [0003] a) Automatically adjust the cabin pressure in the pressurized area within the entire flight envelope; [0004] b) the ability to control the rate of change of cabin pressure under steady state and transient conditions of cabin pressure; [0005] c) Control the pressure difference inside and outside the cockpit of the aircraft on the ground; [0006] d) It has the function of cockpit smoke exhaust; [0007] e) It has the function of height restriction; [0008] f) It has the control fun...

AI Technical Summary

Problems solved by technology

[0013] i) According to the traditional method, the test of the configuration items of the cockpit pressure control system software (CPCU software) needs to wait for the completion of the development and testing of the relevant airborne system hardware equipment, and the airborne software can only be carried out after the available hardware equipment is submitted. Test work, resulting in prolongation of the entire project cycle;

[0014] j) During the testing phase of airborne software configuration items, due to limited hardware equipment resources or high cost of hardware equipment, the software testing project team cannot efficiently carry out relevant testing work;

[0015] k) Due to the design or prototype production problems in the early debugging stage of hardware equipment, it is impossible to effectively distinguish software or hardware failures when testing software configuration items, making software testing inefficient;

[0016] l) In the test and verification stage, based on the real hardware environment, it is difficult to fully test and verify through the hardware environment to deal with many abnormal situations (such as the failure mode of each member system or equipment) in the flight management system software design;

[0017] m) In the phase of simultaneous testing and verification of multiple versions of software, since there is only one set of real hardware environment, an unfavorable situation is formed in order to test multiple versions of CPCU software, and the same set of hardware test system competes for test resources at the same time;

[0018] n) Or, it often occurs that the only set of real hardware environment is developing and verifying the function of a certain version of CPCU software, and the state of another version of CPCU software cannot be tested at the same time, which delays the test plan and software product installation plan to be carried out on time;

[0019] o) Or, the only physical verification platform in the laboratory is in the state of troubleshooting airborne equipment in the outfield, and the state of CPCU software testing cannot be carried out at the same time, which delays the testing plan and software product installation plan on time;

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