A remote control interface output protection device

Abstract

The invention discloses a remote control interface output protective device comprising a digital circuit, a conditioning circuit, a programmable logic device CPLD, an NPN type triode Q2 and a controller. The digital circuit generates a level control signal. The conditioning circuit acquires and processes the level control signal through the programmable logic device CPLD. The controller controls the programmable logic device CPLD by adjusting the NPN type triode Q2 so as to protect the conditioning circuit. The signal inputted to the conditioning circuit is acquired and processed through the programmable logic device CPLD so that multistage protection of the conditioning circuit can be realized, and the problem that high level output is not controlled by the input end after failure of the conventional conditioning circuit triode can be solved. Indicating lamps are arranged at three positions of the circuit so that the situation of the input signal, the output signal and voltage on / off can be effectively reflected, and the effect of fault detection rapid locating can be achieved and the technical defect that the satellite-borne product abnormal switch is not easy to discover can be compensated.

Description

technical field [0001] The invention relates to a remote control interface output protection device, which is suitable for a circuit interface with fixed pulse width and high level output, and belongs to the technical field of remote control interface circuit protection. Background technique [0002] In the field of aerospace, many products use magnetic latching relays to control the power on or off, and the on-off of magnetic latching relays is usually controlled by a specific voltage and a specific duration. Therefore, in aerospace product systems, there are A dedicated remote control subsystem is used to control the on-off of all stand-alone machines, and before the whole star joint test, in order to control the power on and off of the product, it is necessary to develop a simulator to realize this function. [0003] The remote control interface of the simulator usually requires the output of high-level, fixed pulse width pulses, and multiple signal outputs. The common ci...

AI Technical Summary

Problems solved by technology

[0006] The technical problem of the present invention is: to overcome the deficiencies of the prior art, the present invention provides a remote control interface output protection device, which collects and processes the signal entering the conditioning circuit through the programmable logic device CPLD, and realizes the multi-level protection of the conditioning circuit , which solves the problem that the high-level output is not controlled by the input terminal after the triode of the traditional conditioning circuit fails; by setting indicator lights at three positions of the circuit, it effectively reflects the input signal, output signal and voltage on-off situation, achieving It improves the effect of rapid fault detection and positioning, and makes up for the technical defect that it is difficult to find the abnormal switch of the product on the star.

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