Methods and apparatuses for detecting parameter for air purifier

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Solution Overview

Problem

Existing air purifiers lack effective methods to measure purification parameters, making it difficult to assess their performance and efficiency in improving indoor air quality.

Innovation Solution

An air purifier system that acquires intake and output air quality parameters using sensors and determines a purification parameter, which is then outputted for user interface and control adjustments, such as fan speed and operation mode, to enhance purification efficiency and user experience.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If air purifier purification performance is improved, then air quality improvement is enhanced, but measurement capability is insufficient

Engineering Contradiction:

Improvepurification performanceVSAvoidpurification parameter measurement

Core Design Contradiction:

ReliabilityVSMeasurement precision

Solution Approach 1:

The patent implements a feedback mechanism by acquiring air quality parameters before and after purification, calculating the purification parameter, and using this information to adjust fan speed and operation modes. This closed-loop feedback enables accurate measurement and continuous optimization of purification performance.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent replaces manual or mechanical measurement methods with electronic sensing and computational analysis. By using sensors to acquire air quality parameters and processors to calculate purification parameters, the system achieves precise, automated measurement of purification performance.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If purification parameter detection is added, then performance measurement capability is improved, but device complexity increases

Engineering Contradiction:

Improvepurification parameter detectionVSAvoidsystem structure

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent makes existing components serve multiple functions. The air intake fan and air discharging fan not only perform air movement functions but also enable the acquisition of air quality parameters before and after purification. The processor both controls fan operations and calculates purification parameters, reducing the need for additional dedicated components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system uses its own operational structure to perform measurement functions. The air purifier utilizes its existing air intake and discharge pathways, along with integrated sensors and processors, to self-measure its purification performance without requiring external measurement equipment or complex additional infrastructure.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS10518208B2Methods and apparatuses for detecting parameter for air purifier

Publication Date: 2019.12.31 XIAOMI INC

AI summary

Methods and apparatuses are provided for detecting parameter. The method includes: acquiring at least one intake air quality parameter of an air intake area of an air purifier and at least one output air quality parameter of an air discharging area of the air purifier; determining a purification parameter corresponding to the intake air quality parameter of the air intake area and the output air quality parameter of the air discharging area; and outputting the purification parameter.