Serial control interface circuit for multiple relays

A control interface, multi-relay technology, applied in the direction of program control, computer control, general control system, etc., can solve the problems of high cost, large number of processor IO, low reliability, etc., to achieve low cost, enhance anti-common mode interference ability, high reliability

Pending Publication Date: 2019-07-02
ZHENGZHOU CHUNQUAN ENERGY SAVING
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of a large number of IOs occupied by processors, low reliability and high cost in the existing control of a large number of relays, the present invention provides a serial control interface circuit for multiple relays

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  • Serial control interface circuit for multiple relays
  • Serial control interface circuit for multiple relays

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Embodiment Construction

[0026] In order to make the purpose, technical features and technical effects of the technical solution of the present invention more clear, the exemplary solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention.

[0027] A multi-relay serial control interface circuit, used to control a large number of relays, including at least one serial-to-parallel chip, data latch chip and relay driver chip; for application scenarios that need to control a large number of relays, use the serial The conversion to parallel chip realizes the conversion of serial control signals on the control data line to parallel control signals, reducing the number of input signals required to control multiple relays. For application scenarios that exceed the number of output interfaces of the serial-to-parallel chip, the serial-to-parallel chip can be cascaded to expand the number of...

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Abstract

The invention relates to the technical field of relay control, in particular to a serial control interface circuit for multiple relays, which comprises at least one serial-to-parallel chip, a data latch chip and a relay driving chip, wherein the serial-to-parallel chip is used for converting a serial control signal on a control data line into a parallel control signal, and the multiple serial-to-parallel chips are cascaded; the data latch chip is used for latching the parallel control signal outputted by the serial-to-parallel chip; and the relay driving chip is configured to receive the parallel control signal latched and outputted by the data latch chip to independently control one or more relays. The problems that the existing large amount of relay control occupies a large number of processor IOs, the reliability is low and the cost is high can be solved.

Description

technical field [0001] The present invention relates to the technical field of relay control, in particular to a serial control interface circuit for multiple relays, in particular to a control circuit when a large number of relays need to be controlled one by one or in batches, and the circuit can be applied to industrial or civil automation In the control, the relay controls part of the hardware circuit. Background technique [0002] With the increasing automation requirements of industrial and civil equipment, relays have become an indispensable control and execution device. The relay can not only complete the direct control of weak current to strong current and low power to high power, but also can complete the indirect control of low power to super high power by controlling the AC contactor. In industrial application scenarios, the more process nodes are used for mechanical automation process control, the more relays are needed. A fully functional automated production ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/21014
Inventor 杨东刘铭樊晓翠陈玉军吴杰陈传伟
Owner ZHENGZHOU CHUNQUAN ENERGY SAVING
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