A hierarchical test routing device and control method for avionics equipment

Abstract

The invention discloses a hierarchical test routing device and control method for avionics equipment, including a main control unit and at least one slave extension unit, the main control unit includes a low-frequency interface board, and the main control unit provides the low-frequency interface board required control signal; the extension includes a microwave switch module array and other microwave components, and the main control unit provides control signals and power supplies required by the microwave switch module and other microwave components; the main control unit and the extension are respectively arranged on different circuit boards, The main control machine does not provide a switch drive circuit, and the interface board of the extension is provided with a switch drive circuit. The hierarchical master-slave separation structure facilitates the connection with the tested avionics equipment and the maintenance of the whole machine, reduces the interference problem during the test process, and improves the test efficiency. The design of the drive circuit makes the device more versatile and facilitates the upgrade of the device.

Description

technical field [0001] The invention relates to the technical field of testing, in particular to a hierarchical test routing device and control method for avionics equipment. Background technique [0002] Airborne avionics equipment includes communication, navigation, identification equipment, etc., which complete the communication, navigation, identification processing and control between the aircraft and the ground. Airborne communication navigation identification equipment is composed of functional units such as ultrashort wave, short wave communication, altimeter, compass beacon, TACAN precision ranging, microwave landing, identification friend or foe, and air traffic control response. There are many test parameters and complex test procedures. Low frequency microwave signals Mixed, large and small power signals coexist, the test is very difficult. It has more than one hundred automatic test routing channels and nearly one hundred test interfaces. The test routing is co...

AI Technical Summary

Problems solved by technology

[0004] The existing switch matrix device uses a large number of microwave switch modules, relays, signal conditioning microwave components and semi-steel cables, etc., including low-frequency test interfaces and radio frequency test interfaces are all concentrated together, there are many test interfaces, and the interface density is very large, which is inconvenient The connection with the avionics device under test affects the test efficiency

Moreover, since there are many microwave parts used inside the device, all the parts are gathered together, which is inconvenient for the maintenance of the whole machine.

Due to the rapid development of avionics equipment, the test route of avionics equipment changes with the test method and test process of the new generation of equipment, and the design of existing devices has the problem of difficulty in upgrading

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