Pressure detecting system based on programmable gain amplifier

• Main Authors: ZHU ZHIGUANG, GUO YANGYANG, LIU YAOJI, CHEN SHUGUANG, WANG PANFENG, WANG CONG, KONG XIANGFEI, WANG WEI, HOU JIANPING, WEI WENJUAN, NIE JINGJING, ZHAI YINGYING, LIU CONG, WANG CHAO, HE FAZHAN, CHEN JING
• Format: Patent
• Language: Chinese; English
• Published: 19.09.2017
• Subjects: MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; PHYSICS; TESTING

The utility model discloses a pressure detecting system based on programmable gain amplifier, including a plurality of bridge type pressure sensor, every bridge type pressure sensor's signal output part is connected through the low pass filter and the signal input part of pressure collecting module respectively, the signal output part of pressure collecting module passes through serial peripheral interface and main control singlechip communication connection, main control singlechip is connected with upper computer communication through its inside asynchronous receiver/transmitter transmitter. The utility model discloses the advantage lies in adopting programmable gain amplifier (PGA) conduct sensor signal's preceding stage modulate circuit, according to the different gain of demand adoption of difference, and the homogenization of realization multichannel pressure sensor signal collection full -scale range to improve the effective accuracy of AD conversion, reach the undistorted processing of sensor signal,