Particle sensor self-cleaning control method, particle sensor, and home appliance
By acquiring particulate matter concentration and oil fume deposition flux, and combining them with a pollution deposition kinetic model, the sensor shutdown time is dynamically adjusted, solving the problems of decreased detection accuracy and shortened lifespan of the sensor in high oil fume environments, and achieving efficient adaptive cleaning control.
CN122386687APending Publication Date: 2026-07-14HANGZHOU ROBAM APPLIANCES CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HANGZHOU ROBAM APPLIANCES CO LTD
- Filing Date
- 2026-04-20
- Publication Date
- 2026-07-14
AI Technical Summary
Technical Problem
Existing particulate matter sensors suffer from decreased detection accuracy and shortened lifespan in high-fume environments. Existing self-cleaning control schemes cannot adapt to dynamic changes in fume concentration, leading to over-cleaning or under-cleaning.
Method used
By acquiring particulate matter concentration and oil fume deposition flux, and combining them with a pollution deposition kinetic model, the sensor shutdown time can be dynamically adjusted to achieve on-demand cleaning and avoid the shortcomings of fixed-cycle cleaning.
Benefits of technology
It improves the detection accuracy and lifespan of the sensor, reduces cleaning energy consumption, and enables adaptive cleaning control of the sensor.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122386687A_ABST
Abstract
The application provides a particle sensor self-cleaning control method, a particle sensor and a household appliance, and relates to the technical field of smart home. The method is applied to a control module of the particle sensor, and the method comprises the following steps: in response to an opening signal, a first oil fume deposition flux in an opening state of the particle sensor and a second oil fume deposition flux in a closing state are acquired; after a preset single detection time length is reached, a self-cleaning mode is started until a preset single cleaning time length is reached; the particle sensor is closed until a maximum safe closing time length is reached, and then the particle sensor is opened again; wherein the maximum safe closing time length is determined by an oil fume deposition amount, a working time length, a self-cleaning efficiency and the single cleaning time length; the state of the particle sensor is acquired to determine the maximum safe closing time length, the closing time length is dynamically adjusted according to the environmental oil fume concentration, the over or deficiency of fixed period cleaning is avoided, and the sensor precision and service life are improved.
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