Control method and device for stopping rolling gate when meeting resistance

Abstract

The invention discloses a control method and device for stopping a rolling gate when meeting resistance. The method comprises the steps of conducting sampling within a set sampling interval to obtainmultiple sapling current values, and judging whether or not a motor is running according to the sapling current values; if yes, continuing to judge whether or not the motor of the rolling gate meets resistance or meets resistance and stalls; if yes, controlling the motor to power down and stop running. By means of the method, the purposes that the rolling gate can automatically sense resistance when meeting resistance, and quickly carries out operation like stopping running are achieved to guarantee that people or articles are not hurt or injured due to pinch of the rolling gate, besides, themotor can be protected, and the service life of the motor can be prolonged.

Description

technical field [0001] The invention relates to a control method for stopping a rolling gate when it is blocked, in particular to a method and a control device for controlling a rolling gate to stop when it is blocked. Background technique [0002] At present, during the closing process of the rolling gate, if there is an obstacle blocking the closing of the rolling gate, the rolling gate will continue to close downwards, which may easily cause damage to the rolling gate, especially when people or vehicles pass through when the rolling gate is closed. become a safety accident. [0003] The existing single-phase AC motor rolling gate stop solution uses a feed-through AC transformer with an ADC (Analog-to-Digital Converter) for current sampling. The problem of misjudgment and omission. However, when the rolling gate encounters resistance during operation, the judgment of the single-chip microcomputer is not accurate, and it is easy to cause a large deformation of the rolling...

AI Technical Summary

Problems solved by technology

[0002] At present, during the closing process of the rolling gate, if there is an obstacle blocking the closing of the rolling gate, the rolling gate will continue to close downwards, which may easily cause damage to the rolling gate, especially when people or vehicles pass through when the rolling gate is closed. safety accident

[0003] The existing single-phase AC motor rolling gate stop solution uses a feed-through AC transformer with an ADC (Analog-to-Digital Converter) for current sampling. The problem of misjudgment and omission

However, when the rolling gate encounters resistance during operation, the judgment of the single-chip microcomputer is not accurate, and it is easy to cause a large deformation of the rolling gate, resulting in excessive curling of the rolling gate. , so that the rolling gate is not closed tightly

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