公开(公告)号：US09989432B2

公开(公告)日：2018-06-05

申请号：US15216698

申请日：2016-07-22

Applicant: PROLIFIC TECHNOLOGY INC. ,  UniSense Technology Co., Ltd

Inventor： Chiung-An Chen ,  Yun-Kuo Lee ,  Chih-Yuan Hung ,  Jia-Chun Huang ,  Yeow-Chin Chen ,  Shu-Fan Wu

IPC: G01L9/00 ,  G01L19/00 ,  G01L19/04 ,  G01L9/02

CPC classification number: G01L9/025 ,  G01L9/0052

Abstract: 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.

公开(公告)号：US20170023428A1

公开(公告)日：2017-01-26

申请号：US15216698

申请日：2016-07-22

Applicant: PROLIFIC TECHNOLOGY INC. ,  UniSense Technology Co., Ltd

Inventor： Chiung-An Chen ,  Yun-Kuo Lee ,  Chih-Yuan Hung ,  Jia-Chun Huang ,  Yeow-Chin Chen ,  Shu-Fan Wu

IPC: G01L9/02

CPC classification number: G01L9/025 ,  G01L9/0052

Abstract: 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.

Abstract translation: 提供了阻抗传感器和使用该阻抗传感器的电子装置。 阻抗传感器包括阻抗桥电路，补偿电路和信号处理电路。 阻抗桥电路具有输入侧和输出侧，并且被配置为响应于物理压力产生第一阻抗变化。 补偿电路并联耦合到阻抗桥电路的输入侧，并且被配置为响应于环境温度而产生第二阻抗变化。 信号处理电路分别检测第一和第二阻抗变化，并且因此产生指示第一阻抗变化的第一感测信号和指示第二阻抗变化的第二感测信号，以补偿第一感测信号的温度偏移部分 并通过第二检测信号产生压力检测信号。