Networking control method and automatic flushing system of flushers used in public toilet

Abstract

The invention relates to a networking control method and an automatic flushing system of flushers used in a public toilet. Each squatting position in the public toilet is provided with one flusher provided with a sensor, a single-chip and an electromagnetic valve. The control method comprises the following steps of: a) connecting the single-chip of each flusher together by using a bus; b) detecting the squatting position by the sensor, from the time when a person is detected at the squatting position to the time when the person leaves the squatting position, recording the residence time of the person at the squatting position; and c) when detecting that the person leaves the squatting position, checking whether other flushers are flushing at that time, if so, waiting, otherwise, flushing.The automatic flushing system adopting the method controls each flusher in a unified mode to avoid water pressure reduction caused by flushing at the same time so as to guarantee public health and save water resources; and simultaneously, with the adoption of a one-to-one modularized design, the scheme has extremely strong adaptability and expandability to various systems, faults of a single controller cannot influence the normal work of other flushers, so the stability is very strong.

Description

technical field [0001] The invention relates to the field of public health, in particular to automatic flushing equipment for public toilets. Background technique [0002] At present, the known automatic squatting flushers for toilets all adopt a single-body design and work independently, and are composed of an active infrared induction control device and a solenoid valve. When it is used in a place with a large number of users, many squatting positions are flushed at the same time, resulting in a drop in water pressure, insufficient flushing, adverse effects on the public health environment and a waste of water resources; the patent document with the application number 200510049867.7 discloses a A one-to-many group control scheme that uses a single-chip microcomputer to control multiple flushers including sensors and solenoid valves. It is pointed out that the scheme saves single-chip microcomputers, but the scalability of the scheme is poor. If the number of flushers to be...

AI Technical Summary

Problems solved by technology

[0002] At present, the known automatic squatting flushers for toilets all adopt a single-body design and work independently, and are composed of an active infrared induction control device and a solenoid valve. When it is used in a place with a large number of users, many squatting positions are flushed at the same time, resulting in a drop in water pressure, insufficient flushing, adverse effects on the public health environment and a waste of water resources; the patent document with the application number 200510049867.7 discloses a A one-to-many group control scheme using a single-chip microcomputer to control multiple flushers including sensors and solenoid valves, and pointed out that the scheme saves single-chip microcomputers, but the scheme has poor scalability. If the number of flushers to be controlled increases, it must be redesigned The circuit even has to replace the single-chip microcomputer due to insufficient resources of the single-chip microcomputer; and the stability of the scheme is poor, if the control circuit or the single-chip microcomputer fails, all flushers will not work; finally, the sensor adopts an active infrared sensing method, because its characteristics are easily affected by light, False alarms occur when strong light (e.g. lights, sunlight) shines

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