Automatic water adding control system for humidifier based on rectifier type differential amplification circuit

Abstract

The invention discloses an automatic water adding control system for a humidifier based on a rectifier type differential amplification circuit. The automatic water adding control system is characterized by mainly comprising a central processing unit, an A/D converter, a preset value storage unit, an automatic water adding control circuit, a display, a power supply, the differential amplification circuit, a water level sensor, a rectifying and filtering circuit and an electromagnetic valve, wherein the A/D converter, the preset value storage unit, the automatic water adding control circuit, the display and the power supply are connected with the central processing unit; the differential amplification circuit is connected with the A/D converter; the water level sensor is connected with the differential amplification circuit; the rectifying and filtering circuit is serially connected between the power supply and the water level sensor; and the electromagnetic valve is connected with the automatic water adding control circuit. The automatic water adding control system not only is simple in structure, but also is low in cost; the water supply electromagnetic valve further can be opened through the automatic water adding control circuit when water in the humidifier is insufficient, so that automatic water adding is realized, the circumstance that the humidifier works under an condition of running out of water in the humidifier to cause faults and meanwhile waste electrical energy is prevented, and the automatic water adding control system is suitable to be popularized and used.

Description

technical field [0001] The invention relates to an automatic control system, in particular to an automatic water addition control system for a humidifier based on a rectification differential amplifier circuit. Background technique [0002] Humidifiers are gradually favored by people because they can humidify indoor air, especially in winter when the weather is dry, and humidifiers have become an indispensable household appliance for many people. When using a humidifier, you need to add water to the humidifier. The humidifier will spray water into the air by spraying. As the humidifier continuously sprays water mist, the water in the humidifier will become less and less. When the water in the humidifier is sprayed out, the humidifier will no longer spray, so it cannot continue to humidify the indoor air. The currently used humidifier cannot automatically add water after the water is used up, so it often results in the situation that the humidifier is activated but cannot pe...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the disadvantage that the currently used humidifier cannot automatically add water after the water is used up, so it often causes the humidifier to be in the activated state but cannot perform humidification due to lack of water, and to provide a humidifier that is not only simple in structure, but also low in cost. , and can also add water in time when the water in the humidifier is insufficient

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