An inverse logic negative terminal control reset block linkage circuit and reset control method

Abstract

The invention relates to an antilogical negative terminal control reset block linkage circuit and a reset control method. The reset block linkage circuit comprises a block module, a reset module and anand module. When a reset signal exists, the reset module outputs a high level signal. When the reset signal does not exist, the reset module outputs a low level signal. When a block signal exists, the block module outputs the high level signal. When the block signal does not exist, the block module outputs the low level signal. The output singles of the reset module and the block module are connected with the nand module. The nand module outputs a stand-alone reset signal. According to the circuit and the method, a product only can realize a reset function under the condition that the blockcircuit cannot be put through, after a rocket is taken off, a rocket-ground power supply path is switched off, the block circuit does not work, and it is ensured that the reset circuit cannot work ina flight process. The problem that the block circuit loses efficacy resulting from the fact that other signals enter a block circuit control end along a negative busbar and an optocoupler interface due to the sneak path problem can be avoided.

Description

Technical field [0001] The invention relates to an anti-logic negative terminal control reset blockade linkage circuit and a reset control method, belonging to the field of launch vehicle control. Background technique [0002] At present, reset blockade circuits are applied in the fields of industrial and military electronic products. The reset circuit is mainly a functional circuit that resets the inside of the chip during product debugging. The main function of the blocking circuit is to prohibit the reset function of the instrument and equipment, so as to avoid accidental resetting of the product during work, which may cause the product to fail or terminate. The usual method is to power up the lockout circuit separately, so that the lockout circuit can work for a long time and the reset circuit cannot work, thereby achieving the purpose of avoiding accidental resetting of the single machine during operation. However, this design method is not applicable in the field of launc...

AI Technical Summary

Problems solved by technology

Especially when the rocket takes off and the stage is separated, it is particularly serious, and the power supply system on the rocket is connected to each other at the negative end. According to the traditional design method, at this time, the electronic product may be affected by the sneak path or the instantaneous power supply interruption, which will cause the actual effect of the blocked circuit, thereby increasing Unexpected reset conditions due to device interference

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