A method for detecting the life of a filter screen of a vehicle-mounted purifier

Abstract

The invention provides a method for detecting the life of a filter screen of a vehicle-mounted purifier, which includes the steps of detecting the life of dust adsorption: S11. collecting the calibration data of the dust adsorption life of the filter screen and forming a database; S12. detecting the air pressure of the interlayer between the filter screen and the fan in real time value and calculated power, compare the air pressure value corresponding to the calculated power in the database with the detected air pressure value, if the deviation is within the set first threshold, proceed to the next step, otherwise continue to repeat this step; S13. Perform optical illuminance Test, detect the gray scale value on the surface of the HEPA layer of the filter screen, judge the first set range that the gray scale value falls into, and alarm when it reaches the first dangerous range; combine the air pressure changes before and after the filter screen, fan power and the gray value of the filter screen surface And other parameters to comprehensively judge the life stage of the filter screen, making the filter life reminder function of the purifier more accurate, adapting to different environmental changes, effectively evaluating the life of the filter screen, accurate and reliable data, and avoiding secondary pollution in the car.

Description

technical field [0001] The invention relates to the field of filter testing, in particular to a method for detecting the life of a filter screen of a vehicle-mounted purifier. Background technique [0002] Most of the current vehicle-mounted air purifiers have an automatic reminder function for filter replacement. The automatic reminder function for the life detection logic of the filter is mostly based on the cumulative power-on time reaching a certain period of time to remind the replacement, such as setting the cumulative use of 360 hours That is to remind you to replace the filter, but the automatic reminder function ignores many factors that affect the life of the filter, causing consumers to question the product’s automatic filter replacement reminder function. For example, if the purifier is used in the smog weather in northern China, its air quality As a result, the filter screen in the purifier is scrapped in a short period of time and loses the purification effect,...

AI Technical Summary

Problems solved by technology

[0002] Most of the current vehicle-mounted air purifiers have an automatic reminder function for filter replacement. The automatic reminder function for the life detection logic of the filter is mostly based on the cumulative power-on time reaching a certain period of time to remind the replacement, such as setting the cumulative use of 360 hours That is to remind you to replace the filter, but the automatic reminder function ignores many factors that affect the life of the filter, causing consumers to question the product’s automatic filter replacement reminder function. For example, if the purifier is used in the smog weather in northern China, its air quality As a result, the filter screen in the purifier is scrapped in a short period of time and loses the purification effect, but the system does not prompt in time, and continuing to use the scrapped filter screen will easily cause secondary pollution in the car; while the car air purifier can not only remove dust It also has the function of removing harmful gases. Generally, the interior space of a car is about 3 cubic meters, and the filter screen of the purifier is relatively small. At present, most manufacturers use composite filter screens, which can not only remove dust, but also absorb dust. Harmful gas, but the life of the filter is only replaced by the accumulated startup time or dust-related indicators, without considering the life of adsorbing harmful gas, which is obviously inaccurate

[0003] Therefore, in the prior art, there is inaccurate automatic detection of the filter life of the vehicle-mounted purifier, and the vehicle-mounted purifier does not carry out targeted detection of the adsorption life of harmful gases in the filter, so that consumers cannot effectively evaluate the state of the filter, resulting in filtration The filter is not maximized and the filter cannot be replaced in time, causing secondary pollution

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