Human body sensing circuit with temperature compensation

By introducing a temperature-compensated human body sensing circuit into household appliances, and utilizing signal amplification and temperature compensation technologies, the problem of temperature interference affecting human body sensing functions has been solved, achieving a more stable and reliable sensing effect.

CN224457039UActive Publication Date: 2026-07-03ZHONGSHAN BAOYUEXIN ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHONGSHAN BAOYUEXIN ELECTRONICS CO LTD
Filing Date
2025-04-17
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

The human body sensing function of existing household appliances is easily affected by the ambient temperature, resulting in unstable sensing, false triggering, or failure to sense human body, which makes it difficult to meet market demand.

Method used

Design a human body sensing circuit with temperature compensation, including a signal processor, a human body sensor, a signal amplification circuit and a temperature compensation comparator circuit. The thermistor and comparator are used for signal amplification and temperature compensation to reduce the impact of ambient temperature changes on the sensing signal.

Benefits of technology

It improves the stability and reliability of the human body sensing circuit, reduces false triggering and failure to detect human body, and enhances the smoothness and applicability of use.

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Abstract

The utility model discloses a human body response circuit with temperature compensation, including signal processor and human body inductor, the output of human body inductor is connected with the human body response signal amplifier circuit for the amplification of response signal, the output of human body response signal amplifier circuit is connected with the temperature compensation comparison circuit for signal comparison and temperature compensation, the signal output of temperature compensation comparison circuit is connected with signal processor. The utility model discloses the structure is reasonable, its output in human body inductor is connected with the human body response signal amplifier circuit for the amplification of response signal, can amplify response signal to the temperature compensation comparison circuit compensation through comparison, thereby makes signal department stable, makes response signal not to attenuate because of environmental temperature change, is favorable to promote use smoothness and reliability, reduces the condition of false triggering or inducting not human body, and the suitability is strong.
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