Full-automatic rapid temperature compensation device and method for multiple pressure sensors

Abstract

The invention relates to a full-automatic rapid temperature compensation device and method for multiple pressure sensors. The device comprises multiple pressure sensors, multiple bus communication circuits, a bus module, a power supply, a standard pressure source, a temperature control box, and an upper computer, wherein the bus communication circuit is connected with the pressure sensor and is used for collecting and storing data collected by the pressure sensors, the multiple bus communication circuits are connected with the bus module, the bus module is connected with the upper computer, the standard pressure source and the temperature control box are connected with the upper computer, and the pressure sensors are arranged in the temperature control box. Pressure signals generated by the standard pressure source are collected under the same temperature condition through the multiple pressure sensors arranged in the temperature control box, collected pressure values are obtained, the different pressure values are provided for the upper computer for algorithm compensation, in factory mass production, the inconsistency of each pressure sensor is competed for, each pressure sensor is compensated, and manual pressurization in the past is replaced.

Description

technical field [0001] The invention relates to the field of pressure transmitter equipment, in particular to a fully automatic rapid temperature compensation device and method for multiple pressure sensors. Background technique [0002] The main material of a silicon pressure sensor is semiconductor silicon, and its output is easily affected by temperature. At present, high-precision pressure sensors need a wide temperature range of 40°C-85°C to meet the requirements of good output temperature characteristics and high precision. Compensation only through the sensor circuit can no longer meet the high-precision requirements; at the same time, in the mass production of the factory, for the inconsistency of each pressure sensor itself, it is necessary to compensate each pressure sensor. The existing compensation method is through manual Pressurization and temperature setting for compensation are relatively cumbersome. Contents of the invention [0003] In view of this, the...

AI Technical Summary

Problems solved by technology

Compensation only through the sensor circuit can no longer meet the high-precision requirements; at the same time, in the mass production of the factory, for the inconsistency of each pressure sensor itself, it is necessary to compensate each pressure sensor. The existing compensation method is through manual Pressurization, set temperature for compensation, more cumbersome

Images