Series-parallel sequential logic relay circuit network

Abstract

The invention provides a serial-parallel sequential logic relay circuit network, and aims to provide a relay-based highly reliable circuit executing mechanism to ensure that a command is output reliably as required and otherwise, the command cannot be output at all. The invention is achieved by the following technical scheme: the serial-parallel sequential logic relay circuit network includes a relay series circuit by series connection of contacts and a parallel circuit consisting of a plurality of relay contacts connected in parallel, the three-way relay series circuit has common terminals connected in parallel through an input terminal a to receive a preparatory command and common terminals connected in parallel through an output terminal c to output a command of execution, and the two groups share the same line to output the preparatory command through a parallel line b so as to constitute an at least three-way serial-parallel sequential logic relay circuit network, in the three-way series-parallel sequential logic relay circuit network circuit, series-parallel relays are divided into two groups, the two groups are connected in parallel by the same line to output a preparatory command control signal through the parallel line b, and the signal is input to the network through the command of execution control to achieve the on and off of a relay coil.

Description

technical field [0001] The invention relates to an electronic control device, in particular to a relay circuit adopted by a safety control command executive mechanism in an aircraft safety command receiver. Background technique [0002] The relay is a kind of contact or circuit that turns on or off the AC and DC small-capacity control circuit when the input quantity changes to a certain value. It is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic adjustment, safety protection, and conversion circuit in the circuit. Electromagnetic relays are generally composed of iron cores, coils, armatures, contact reeds, etc. As long as a certain voltage is applied to both ends of the coil, a certain current will flow through the coil, thereby generating an electromagnetic effect. The moving contact and the static contact (normally open contact) are sucked together. For the "normally open and normally cl...

AI Technical Summary

Problems solved by technology

[0004] In the existing safety command receiver, under normal circumstances, one relay of the existing safety control command actuator has two sets of changeover contacts available, although the circuit design also completely eliminates the single point failure mode, using two relays 2 A group of conversion contacts are connected in parallel to realize the output of the pre-order command, 2 relays and 2 groups of conversion contacts are connected in parallel to realize the output of the motor command, the conversion contacts of the pre-command and the motor relay are connected in series, the safety control command actuator in the safety command receiver, the relay The circuit uses 4 sets of transfer contacts of 4 relays. Due to the insufficient design of circuit redundancy, once a set of transfer contacts of a certain relay is stuck or two sets of transfer contacts are disconnected, it will cause malfunction or failure. Does not operate, so there is a defect that the relay circuit may cause non-operation or malfunction

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