Water shortage alarm system based on step-down protection circuit and used for humidifier

Abstract

The invention discloses a water shortage alarm system based on a step-down protection circuit and used for a humidifier. The water shortage alarm system is characterized by comprising a central processor, an analog-to-digital converter, a water shortage alarm circuit, a displayer, a power source, a water level sensor and the step-down protection circuit, wherein the analog-to-digital converter, the water shortage alarm circuit, the displayer and the power source are connected to the central processor, the water level sensor is connected to the analog-to-digital converter, and the step-down protection circuit is connected between the power source and the water level sensor in series. The water shortage alarm system is simple in structure, low in cost, capable of giving an alarm through the water shortage alarm circuit when water in the humidifier is insufficient and reminding users to add the water, high in intelligence degree and suitable for application and popularization.

Description

technical field [0001] The invention relates to an alarm system, in particular to a water shortage alarm system for a humidifier based on a voltage-down protection 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. Humidifiers currently in use cannot notify the user that the water has run out, so it is often the case that the humidifier is activated but cannot perform humidification due to lack of water. Humidifiers work...

AI Technical Summary

Problems solved by technology

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

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