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Device to prevent relay misoperation during power-on

A relay misoperation, relay technology, applied in the direction of relays, circuits, electrical components, etc., can solve problems such as relay misoperation, relay misoperation, etc., to achieve the effect of reducing relay misoperation, simple structure, and obvious effect

Active Publication Date: 2016-04-13
BEIJING ESD POWER COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a device for preventing relay malfunction during power-on, so as to solve the problem of relay malfunction caused by the commonly used relay control circuit in the power-on process of single-chip microcomputer

Method used

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  • Device to prevent relay misoperation during power-on
  • Device to prevent relay misoperation during power-on
  • Device to prevent relay misoperation during power-on

Examples

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specific Embodiment

[0032] Such as image 3 As shown, it is a preferred circuit diagram of a device for preventing relay malfunction during power-on described in a specific embodiment of the present invention, wherein,

[0033] The power supply enabling control module 101 is composed of resistors R1 and R2 (also referred to as the first resistor and the second resistor respectively) and a PNP transistor Q1 (the first transistor);

[0034] The driving module 103 is composed of resistors R3 and R4 (also called third resistor and fourth resistor respectively) and an NPN transistor Q2 (the second transistor);

[0035] The relay 102 is composed of an electromagnetic relay K1;

[0036] The IO pins P1.0 and P1.1 of the microcontroller are connected to R2 and R3 respectively.

[0037] When the output ports (DO1_1, DO1_2 and DO1_3) of the relay 102 are required to act, it is first necessary to set P1. The transistor is turned on. Then set P1.1 to high level. When P1.1 is high level, after the voltage ...

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Abstract

The invention discloses a device for avoiding a malfunction of a relay in a power-on process. The device for avoiding the malfunction of the relay in the power-on process is connected between a singlechip and an external circuit and comprises a power supply control module, at least one relay and a drive module. According to the device for avoiding the malfunction of the relay in the power-on process, requirements of the whole relay reliability and stability are improved, occurrence of the malfunction of the relay is reduced, structure is simple, effect is obvious and the malfunction of the relay caused by power on can be avoided in a common singlechip circuit.

Description

technical field [0001] The invention relates to the field of electronic circuits, in particular to a device for preventing relay malfunction during power-on. Background technique [0002] In some electronic equipment, a relay (relay) is an electrical control device, which is a kind of device that makes the controlled quantity undergo a predetermined step change in the electrical output circuit when the change of the input quantity (excitation quantity) meets the specified requirements. electrical appliances. It has an interactive relationship between the control system (also known as the input loop) and the controlled system (also known as the output loop). Usually used in automatic control circuits, it is actually an "automatic switch" that uses a small current to control the operation of a large current. Therefore, it plays the role of automatic adjustment, safety protection, and conversion circuit in the circuit. [0003] Currently commonly used relay control circuits,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H47/02
Inventor 辛剑明刘冬月马勇赵凤阳崔海顺
Owner BEIJING ESD POWER COMM