Filtration screen dust accumulation degree detection method and filtration screen dust accumulation degree detection system

Abstract

The invention discloses a filtration screen dust accumulation degree detection method, which comprises: obtaining the real-time PWM duty cycle and the real-time rotation speed, comparing to a preset initial PWM duty cycle and a preset initial rotation speed, calculating the current PWM duty cycle difference and the current rotation speed difference, and determining the current dust accumulation degree of the filtration screen in the fan according to the current PWM duty cycle difference and the current rotation speed difference. According to the present invention, the two parameters such as the PWM duty cycle and the rotation speed are simultaneously considered in the detection process, and are compared to the initial values so as to improve the accuracy of the detection, such that the good detection result is obtained. The invention further discloses a filtration screen dust accumulation degree detection system, which has the same detection accuracy and the same detection effect as the detection method, wherein the same detection accuracy and the same detection effect can be achieved only by using the original treatment chip in the structure without the additionally arrangement ofnew hardware.

Description

technical field [0001] The invention relates to the technical field of dust accumulation degree detection, in particular to a method and system for detecting dust accumulation degree of a filter net. Background technique [0002] With the industrialization of society, a considerable number of cities and regions in my country have experienced smog and other weather. The decline in air quality has made air purifiers and air conditioners popular, but with the use of air purifiers and air conditioners, it will inevitably lead to filter It will accumulate dust, which will affect the use. [0003] To solve the problem of filter dust accumulation, the prior art also includes calculating the running time of the machine, and if the running time exceeds the threshold, the user is reminded to clean the filter; the fan speed is calculated, and if the speed difference reaches the threshold, it is reminded to clean and replace. The operating conditions of different fan products and the di...

AI Technical Summary

Problems solved by technology

This technology increases the sensor, the cost rises, and when the dust distribution is uneven, the calculation of the return ratio of the infrared signal is prone to misjudgment

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