JCIPRNET
Impedance sensor and electronic apparatus using the same
An impedance sensor and an electronic apparatus using the same are provided. The impedance sensor includes an impedance-bridge circuit, a compensation circuit, and a signal processing circuit. The impedance-bridge circuit has an input side and an output side, and configured to generate a first impedance variation in response to a physical pressure. The compensation circuit is coupled to the input side of the impedance-bridge circuit in parallel, and configured to generate a second impedance variation in response to an environment temperature. The signal processing circuit respectively detects the first and the second impedance variations, and accordingly generates a first sensing signal indicating the first impedance variation and a second sensing signal indicating the second impedance variation, so as to compensate a temperature shift part of the first sensing signal by the second sensing signal and accordingly generate a pressure detection signal.
UniSense Technology Co., Ltd PROLIFIC TECHNOLOGY INC.
G G
G01L G01L
inventional inventional
Jia-Chun Yeow-Chin Chih-Yuan Yun-Kuo Shu-Fan Chiung-An
Huang Chen Hung Lee Wu Chen