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Sensor temperature drift compensation method and pressure sensor box

A pressure sensor and temperature drift technology, applied in the direction of measuring fluid pressure, instruments, measuring devices, etc., can solve the problems of scattered sensor installation, inconvenient use, and low precision, and achieve simple structure, high measurement reliability, and overload resistance strong effect

Inactive Publication Date: 2012-07-04
CHINA GAS TURBINE ESTAB
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is: in order to solve the shortcomings of scattered sensor installation, inconvenient use, serious temperature drift and low precision in the existing multi-point pressure measurement, the present invention provides a sensor temperature drift compensation method and a pressure sensor, which can improve Measurement Accuracy of Pressure Sensors

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  • Sensor temperature drift compensation method and pressure sensor box
  • Sensor temperature drift compensation method and pressure sensor box
  • Sensor temperature drift compensation method and pressure sensor box

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Embodiment Construction

[0045] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, please refer to Figure 1 to Figure 2 .

[0046] See Figure 1 to Figure 2 , A pressure sensor box, including a box body part and a circuit part. The box body part is composed of a pressure sensor 2 and an aviation plug 1. The circuit part is a compensation circuit composed of a MAX1452 chip and a peripheral circuit. The output signal of the pressure sensor The terminal is connected to the S+ port and the S- port of the compensation circuit, the power terminal is connected to the E+ and E- ports of the compensation circuit, and the aviation plug 1 is connected to the output terminal OUT of the compensation circuit, the communication line SDIO and the locking pin ULCK.

[0047] The number of the pressure sensor 2 is more than one, and the number of the compensation circuit is the same as the number of the pressure sensor 2.

[0048] The number of the pr...

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Abstract

The invention belongs to the field of gas pressure measurement, and relates to a sensor temperature drift compensation method and a pressure sensor box. The pressure sensor box comprises a box body part and a circuit part, wherein the box body part consists of a pressure sensor [2] and an aviation plug [1]; and the circuit part is a compensation circuit consisting of an MAX 1452 chip and a peripheral circuit. According to the sensor temperature drift compensation method provided by the invention, calibration of temperature drift can be realized according to sensor characteristics, and the algorithm is simple and effective; and sensor full-range output temperature drift before correction of the temperature compensation method is 4 percent within a range of -40 to 125 DEG C, and the compensation accuracy can reach 0.5 percent after the compensation by the algorithm. The pressure sensor box integrates the gas pressure measurement of multiple passages, and has the advantages of simple structure, high sensitivity, excellent dynamic response characteristic, high overload resistance capacity, high measurement reliability, wide working temperature range and the like.

Description

Technical field [0001] The invention belongs to the field of gas pressure measurement, and relates to a sensor temperature drift compensation method and a pressure sensor box. Background technique [0002] Common pressure sensors have the advantages of simple structure, high sensitivity, good dynamic response characteristics, strong anti-overload ability, and easy realization of non-contact measurement, and are widely used. However, the common pressure measurement sensors are mostly single-channel measurement. By simply integrating the sensor and the compensation circuit, the test object may even be damaged due to the damage of the integrated system in the harsh test environment. The output of the pressure sensor is not only determined by the pressure it is subjected to, but also affected by the environmental temperature, that is, the pressure sensor has cross-sensitivity to temperature, which affects the performance and measurement accuracy of the sensor. This is suitable for hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L19/04
Inventor 陈洪敏罗乘川张光中钟明李杨
Owner CHINA GAS TURBINE ESTAB
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