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PLC (Programmable Logic Controller) control-based test current instantaneous switching method

A test current and controller technology, applied in the sequence/logic controller in the direction of program control, program control, electrical program control, etc., can solve the problems affecting the accuracy of test results, low response speed, low reliability, etc. Realize the effect of automatic characteristics, meet the precision, and improve the detection level

Inactive Publication Date: 2017-11-24
ELECTROMECHANICAL PRODS DETECTING TECH CENT OF SHANGHAI ENTRY EXIT INSPECTION & QUARANTINE BUREAU
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a test current instantaneous switching method based on PLC control, to solve the problem of low response speed, low reliability, lack of data recording function, and influence on the accuracy of detection results in the way of circuit switching of existing detection equipment The problem

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  • PLC (Programmable Logic Controller) control-based test current instantaneous switching method
  • PLC (Programmable Logic Controller) control-based test current instantaneous switching method

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Embodiment Construction

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described and discussed below in conjunction with the accompanying drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all examples. Based on 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.

[0024] In order to facilitate the understanding of the embodiments of the present invention, specific embodiments will be taken as examples for further explanation below in conjunction with the accompanying drawings, and each embodiment does not constitute a limitation to the embodiments of the present invention.

[0025] Such as figure 1 As shown, a kind of test current instantaneous switching device based on PLC control provided in this embodiment includes:

[0026] The first re...

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Abstract

The present invention provides a PLC (Programmable Logic Controller) control-based test current instantaneous switching method. The method includes the following steps that: a PLC obtains an instantaneous switching instruction for a first relay and a second relay through a touch screen; the PLC controls the first relay to be switched on for a preset time and the second relay to be switched off according to the instantaneous switching instruction, obtains the voltage value and current value of a 6-times current closed circuit through a measuring instrument module; after the preset time ends, the PLC controls the first relay to be switched off and the second relay to be switched on, and obtains the voltage value and the current value of a 1-times current closed circuit through the measuring instrument module; the PLC performs calculation according to the voltage values and current values so as to obtain power and a power factor and displays the voltage values, current values, power and power factor in real time through the touch screen. The method of invention, based on PLC control, has a transient test function, can accurately measure the current values of a test circuit before and after switching is performed, and meets the requirements of the precision of the testing process of electrical components.

Description

technical field [0001] The invention relates to the technical field of detection and certification of electrical appliances, in particular to a method for instantaneously switching test currents based on PLC control. Background technique [0002] As an electrical component to start or control household or similar electrical appliances and other equipment, appliance switches are widely used in various electrical appliances in daily life to directly cut off dangerous voltages. Once there is a problem with the safety performance of the appliance switch, it will easily cause dangers such as electric shock and fire, directly endangering the safety of human life and property. Therefore, the assessment of its connecting and breaking capabilities is an important step to ensure product quality. According to the durability test requirements in GB15092.1-2010 "Appliance Switches Part 1: General Requirements", the contacts need to be applied with the switching current and the breaking c...

Claims

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Application Information

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IPC IPC(8): G05B19/05
CPCG05B19/054G05B2219/13041
Inventor 张婧甘红胜梁辉李广超赵志嵩王少波
Owner ELECTROMECHANICAL PRODS DETECTING TECH CENT OF SHANGHAI ENTRY EXIT INSPECTION & QUARANTINE BUREAU
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