A Respiratory Signal Detection Circuit with Automatic Compensation Function
- VernacularTitle:一种具有自动补偿功能的呼吸信号检测电路
- Author:
Ruihua ZHANG
;
Fengchun YE
- Publication Type:Journal Article
- Keywords:
sleep apnea;
detection of respiratory signal;
temperature compensation
- From:
Chinese Medical Equipment Journal
1989;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To introduce a new kind of circuit with temperature and voltage double compensation function in view of the deficiency of ambient temperature change on existing respiratory signal detection circuit. Methods The respiratory signal is detected by the characteristics of diode junction voltage with temperature changes. Results The functions of automatic temperatures compensation and automatic voltage fluctuation compensation are realized with the differential connection of two identical diodes. Conclusion The experimental results shows that the proposed circuit is basically immune to the fluctuation of ambient temperature changes and voltage fluctuation, its structure is simple and the accuracy of breathing signal detection is also improved.
