Unlock instant, AI-driven research and patent intelligence for your innovation.

Diagnosis device and method for relay output channel of a control system

A technology of relay output and control system, applied in measurement devices, circuit breaker testing, instruments, etc., can solve the problems of huge system and reduced practicability, and achieve the effect of small space occupation, low cost and small amount of modification

Active Publication Date: 2018-04-20
MIANYANG WEIBO ELECTRONICS
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a relay output channel diagnostic device for a control system, which is used to overcome the problem of large system and reduced practicability due to the increase of redundant channels when diagnosing relay output failures

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Diagnosis device and method for relay output channel of a control system
  • Diagnosis device and method for relay output channel of a control system
  • Diagnosis device and method for relay output channel of a control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] figure 1 It is a structural diagram of a relay output channel diagnosis device of a control system provided by the present invention. The relay output channel diagnosis device of the control system includes: a first controller 10, a first relay 11 connected to the first controller, a second controller 12 connected to the first controller 10, a second controller 12 connected to The second relay 13 further includes:

[0040] The first signal acquisition circuit 14 connected to the first controller 10 and the first relay 11 is used to collect the first signal of the output channel of the first relay, and send the first signal to the first controller 10;

[0041] The second signal acquisition circuit 15 connected to the second controller 12 and the second relay 13 is used to collect the second signal of the second relay output channel, and send the second signal to the second controller;

[0042] Wherein, when it is judged that the output channel is abnormal according to ...

Embodiment approach

[0048] figure 2It is a structural diagram of another control system relay output channel diagnosis device provided by the present invention. Such as figure 2 As shown, as a preferred embodiment, it also includes:

[0049] The voter 16 connected with the first relay 11 and the second relay 13 is used to determine the voting result according to the output state of the first relay 11 and the output state of the second relay 13;

[0050] The executor 17 connected to the voting device 16 is used to execute actions corresponding to the voting result according to the voting result.

[0051] In the present invention, the voter 16 adopts a 1oo2D voting method, determines the voting result according to the output state of the first relay 11 and the output state of the second relay, and outputs it to the actuator 17 . The executor 17 executes corresponding actions according to the voting result.

[0052] Wherein, the first signal acquisition circuit 14 includes:

[0053] A first r...

Embodiment 2

[0075] image 3 It is a flowchart of a method for diagnosing a relay output channel of a control system provided by the present invention. A method for diagnosing relay output channels of a control system, including:

[0076] S10: collecting the first signal of the first relay output channel, and sending the first signal to the first controller;

[0077] S11: collect the second signal of the second relay output channel, and send the second signal to the second controller;

[0078] S12: When it is judged that the output channel is abnormal according to the first signal, the output state of the first relay, the second signal, and the output state of the second relay, turn off the output of the first relay and closing the output of the second relay.

[0079] The method for diagnosing the relay output channel of the control system provided in this embodiment, by collecting the first signal at the output end of the first relay and the second signal at the output end of the secon...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a relay output diagnosis device for a control system, comprising a first controller, a first relay, a second controller, a second relay, a first signal acquisition circuit, and a second signal acquisition circuit. The first signal acquisition circuit which is connected with the output end of the first relay and the second signal acquisition circuit which is connected with the output end of the second relay are added to acquire a first signal of the output end of the first relay and a second signal of the output end of the second relay. The first controller and the second controller communicate with each other. The first controller or the second controller diagnoses whether an output channel fails based on the first signal and the output state of the first relay or the second signal and the output state of the second relay. Compared with a situation in which only a redundant channel is added, the device has the advantages of low reconstruction workload, small occupied space, high reliability and low cost.

Description

technical field [0001] The invention relates to the technical field of industrial control, in particular to a relay output channel diagnosis device and method of a control system. Background technique [0002] At present, in the field of industrial control technology, especially in safety-level control systems, the digital output module is the last level of equipment before the actuator, and its safety and reliability are particularly important. For the digital output module, if a fault occurs (according to IEC61508, here The failure refers to a single failure), the system should have the ability to turn off the output and enter the safe state. Digital output modules in safety-level control systems usually use relay output. The types of relay output failures include relay coil failure, relay contact adhesion, back-end disconnection, and back-end short circuit. In order to ensure the safety and reliability of the relay output. In the prior art, the safety and reliability of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02G01R31/327
CPCG01R31/3278G05B23/02
Inventor 蒲永材卢铮陈航王享勇李坤贺陈刚赵发银周月阳江楚玲朱文兵
Owner MIANYANG WEIBO ELECTRONICS