1results about How to "Reminder to replace" patented technology

The application provides a filter screen life detection method and device, a medium and an air purification equipment. The method comprises the following steps: acquiring a first dust concentration, a first formaldehyde concentration, a first temperature and a first humidity of an air inlet, and a second dust concentration, a second formaldehyde concentration, a second temperature and a second humidity of an air outlet; calculating a dust purification efficiency of the filter screen by using the first dust concentration and the second dust concentration, and calculating a formaldehyde purification efficiency of the filter screen by using the first formaldehyde concentration and the second formaldehyde concentration; determining a life detection result of the filter screen based on the dust purification efficiency, the formaldehyde purification efficiency, a temperature change amount of the first temperature and the second temperature, and a humidity change amount of the first humidity and the second humidity. The dust concentration, the formaldehyde concentration, the temperature and the humidity of the air inlet and the air outlet are detected, so that the filter screen state can be accurately reflected, the accuracy of detection can be ensured, the user can be accurately and effectively reminded to replace the filter screen, and the user experience is improved.