Design of high precision pressure-resistance type pressure sensor detecting system

摘要

The high precision detecting circuit is designed for the KELLER 3L sensor which is the pressure-resistance pressure sensor, and the water level long time monitoring of groundwater is accomplished. Through designing the power management circuit, the pressure sensor driver circuit, the signal conditioning circuit and temperature compensation method, the problem of zero drift and temperature drift is solved. The experiment shows that the pressure detecting instrument has the very good application prospect with the advantages of small size, low power consumption, high precision and so on.