Detecting method and device of vibrator working state, circuit and humidifier

Abstract

The invention discloses a detecting method and a device of a vibrator working state, a circuit and a humidifier, wherein the method includes steps of acquiring oscillating voltage to drive a vibratorto oscillate; counting the lasting time length when the amplitude of the oscillating voltage exceeds the reference voltage; confirming current working state of the vibrator according to the lasting time length. Due to different amplitudes of the oscillating voltage, the working states of corresponding vibrators are also different; the current working state of the vibrator can be determined upon the lasting time length. Only through a single I / O port, the detection of multiple working states can be realized; the inherent attribute of the vibrator with amplitude can also be learned; thus the working state of the vibrator can be simply and rapidly detected.

Description

technical field [0001] The invention relates to the technical field of home appliances, in particular to a method, device, circuit and humidifier for detecting the working state of a vibrator. Background technique [0002] The vibrator is widely used in cleaning, humidification and other fields due to its stable oscillation frequency, high conversion efficiency from electrical energy to mechanical energy, small resonance impedance, and low heat generation. For example, more and more humidifiers currently use vibrator atomization to replace traditional heating atomization. The principle is that the atomization sheet is driven by an oscillating circuit to oscillate at high frequency to break up water into water particles with a diameter of 1-5 microns. Fog, the water is blown out by the fan to humidify the air, which has the advantages of high humidification efficiency, high humidification intensity, and energy saving. [0003] However, when the vibrator is unloaded, for exam...

AI Technical Summary

Problems solved by technology

For example, in a humidifier, the reed switch is generally used to detect the water level in the water tank. When there is a lack of water, the humidifier is controlled to stop working. However, the reed switch has a certain failure probability. When the reed switch fails, it may cause the humidifier to fail. When the water is in the water, it cannot stop automatically; or by detecting the temperature of the vibrator, when the temperature exceeds the preset value, the humidifier is controlled to stop working. Since the temperature rise takes a certain time, maybe tens of seconds, the reaction time is too long and cannot be stopped in time; Or protect by blown thermal fuse or by multiple protection functions, for example, water level detection and temperature detection and blown thermal fuse for protection exist at the same time, but its various protection functions are through multiple protection circuits and main control units respectively. Realization of I / O port leads to increased product cost

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