Automatic test safety control method of satellite interface

Abstract

The invention relates to an automatic test safety control method of an satellite interface, comprising the steps of: (1) mounting a signal switching circuit between a satellite contact and a measuring port, namely a piece of measuring equipment, wherein the connection between the satellite contact and the measuring equipment is a passage, and two ends of each protective resistor are connected to a static measuring switch in parallel; (2) performing static interface measurement when the satellite is not electrified, switching on the static measuring switch in the step (1) and a bypass protection resistor; (3) before the satellite is electrified, switching off the static measuring switch, accessing the protection resistor, monitoring the state of each passage by FPGA (field programmable gate array), and realizing the exclusive logic with the FPGA, so as to avoid the switch error of the passages; and (4) electrifying the satellite, and performing the tests of other low-frequency interface signals on the satellite with the exception of the static interface measurement. The method provided by the invention enables the automatic test equipment to be work safely and reliably, and still can ensure that the safety of the single machine on the satellite is not influenced by the faults of the device under the condition that the automatic test equipment is faulted, so that the safety of the whole satellite low-frequency interface test is ensured.

Description

technical field [0001] The invention relates to a safety control method for satellite interface automatic testing, which belongs to the field of satellite testing. Background technique [0002] Satellite low-frequency interface includes 100V bus power supply interface, secondary power supply interface, command interface, telemetry interface and other types of interfaces, and there will be high voltage. If improper use leads to wrong contact switching, and the protection measures are not perfect, the interfaces that should not be connected together may be connected, and the test results may be wrong, or the single unit on the star may be damaged. In order to avoid the occurrence of the above situation, to ensure that the wrong operation of the channel can still be avoided in the case of improper use or wrong switching command, and to protect the safety of satellite testing, it is necessary to study the control method of safe switching of the channel. According to the princip...

AI Technical Summary

Problems solved by technology

If improper use leads to wrong contact switching, and the protection measures are not perfect, the interfaces that should not be connected together may be connected together, and the test results may be wrong, or the single machine on the star may be damaged.

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