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四、电阻应变式压力传感器 (一)电阻应变式压力传感器的概况 压力传感器与流量、液位等传感器是工业过程自动化的四大传感器之一,在航空航天、化工、汽车、家电以及医疗器械等方面具有广阔的市场,因而对其研究也很活跃。现在产品化的压力传感器,大致可分直接变换型的压电元件、间接变换型的电阻应变式(电阻式)、差动变压器式(电感式)、振动式(振子)等五种形式,其中半导体应变计式压力传感器较引人注意,起初它是用于工业计测和汽车等部门,但随着价格降低,几年前已经开始在家用电子血压计方面获得了大量使用。
Fourth, the resistance strain gauge pressure sensor (a) resistance strain gauge pressure sensor Overview Pressure sensors and flow, level and other sensors is one of the four industrial process automation sensors, in aerospace, chemical, automotive, home appliances and medical equipment, etc. As a result, its research is also very active. Pressure sensors that are now being manufactured are broadly divided into five types of direct conversion type piezoelectric elements, indirect conversion type resistance strain type (resistance type), differential transformer type (inductance type) and vibration type (vibrator type) Semiconductor strain gauge pressure sensor more attractive, initially it is used for industrial measurement and automotive sectors, but with the price, a few years ago has begun to get a lot of use in home electronic sphygmomanometer.