Pre-amplifier circuit based automatic control system for roller shutter door

Abstract

The invention discloses a pre-amplifier circuit based automatic control system for a roller shutter door. The automatic control system is characterized by mainly comprising a CPU (central processing unit), an A / D converter and a control circuit which are connected with the CPU, a pre-amplifier circuit connected with the A / D converter, a photoelectric sensor and an infrared sensor which are connected with the pre-amplifier circuit as well as a lifting motor connected with the control circuit, wherein the control circuit consists of a control chip IC (integrated chip), a signal trigger circuit with the input end connected with the CPU as well as a door opening control circuit and a door closing control circuit with output ends connected with the lifting motor; the signal trigger circuit, the door opening control circuit and the door closing control circuit are connected with the control chip IC. The automatic control system is simple in structure, low in cost and capable of automatically opening and closing the door, so that the roller shutter door can isolate products and the production environment, and the automatic control system is suitable for popularization and application.

Description

technical field [0001] The invention relates to an automatic control system, in particular to an automatic control system for rolling shutter doors based on a preamplifier circuit. Background technique [0002] Due to the needs of production and processing, factories usually use rolling doors to isolate products from the production environment. The rolling doors currently used are usually electric rolling doors. The electric rolling shutter door is opened and closed by the forward and reverse of the single-phase motor controlled by the relay, that is, the door is opened by the up button, the door is closed by the down button, and the door is stopped by the stop button. Since the electric rolling doors are controlled by human actions, there are often situations where the door is forgotten or not closed due to anxiety, so it is easy to cause harmful pollution such as noise, dust or smoke to enter the rolling door, thereby affecting the products or the production environment in...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects that currently used electric rolling doors rely on manual actions to control the switch, and often forget to close the door or fail to close the door due to anxiety, so that harmful pollution such as noise, dust or smoke easily enters the rolling door, and provides a An automatic control system for rolling doors based on a preamplifier circuit that is not only simple in structure, but also low in cost, and can also close the rolling doors in time

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