Drive control circuit and industrial control equipment

A technology for driving control circuits and circuits, which is applied in the electronic field, can solve the problems of reset and restart, no signal output of the drive circuit, and the reliability of the relay cannot be guaranteed, so as to achieve the effect of ensuring reliability

Active Publication Date: 2018-02-27
深圳市盈科互动科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of relay driving method has the following problems: MCU may reset and restart due to external interference or unreliable MCU program design, resulting in no signal output from the driving circuit to the relay, which in turn leads to the release action of the relay being driven, and the reliability of the relay. performance cannot be guaranteed; if the relay is driving a key device at this time, it may even lead to a very serious safety accident

Method used

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  • Drive control circuit and industrial control equipment
  • Drive control circuit and industrial control equipment
  • Drive control circuit and industrial control equipment

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Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0026] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, the ...

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Abstract

The invention discloses a driving control circuit and industrial control equipment. The driving control circuit comprises a microprocessor, a signal retaining circuit and a relay driving module, and is characterized in that a control signal end of the microprocessor is connected with a signal input end of the signal retaining circuit, and a signal output end of the signal retaining circuit is connected with a driving trigger end of the relay driving module; the control signal end of the microprocessor outputs control level to the signal retaining circuit, and the signal retaining circuit outputs corresponding driving level to the driving trigger end of the relay driving module according to the received control level so as to trigger the relay driving module to open or disconnect driving output; the signal retaining circuit maintains the level state of the signal input end thereof to be unchanged when reset occurs in the microprocessor; and the microprocessor reads the level state of the control signal end thereof after resetting, and configures the control signal end to be level signals with the state being identical to the read level state to output. The technical scheme disclosed by the invention can ensure the operation reliability of a relay.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a drive control circuit and industrial control equipment. Background technique [0002] At present, there are a large number of circuits that use MCU output to drive relays in the field of industrial automation control. Usually, in order to improve the driving capability of MCU or protect the safety of MCU, only a driving circuit (or chip or isolated drive) is added between the MCU and the relay. This kind of relay driving method has the following problems: MCU may reset and restart due to external interference or unreliable MCU program design, resulting in no signal output from the driving circuit to the relay, which in turn leads to the release action of the relay being driven, and the reliability of the relay. Sexuality cannot be guaranteed; if the relay is driving a key device at this time, it may even lead to a very serious safety accident. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/042
CPCG05B19/042G05B2219/25338
Inventor 胡剑敏易龙强
Owner 深圳市盈科互动科技有限公司
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