Pressure sensor temperature measuring system

Abstract

The invention relates to the field of measurement, in particular to a pressure sensor temperature measuring system. The pressure sensor temperature measuring system comprises a control module, and a communication module, a data acquisition module, a data storage module and a digital filtering module which are connected with the control module, wherein the control module transmits a control command to the communication module, the data acquisition module, the data storage module and the digital filtering module; the communication module is used for communicating with an upper computer; the data acquisition module is used for acquiring a pressure signal and a temperature signal at the same time by adopting the same pressure-resistive pressure sensor; the signals are saved in the data storage module; the data storage module is used for finishing control, reading and writing of an underlying FLASH storage chip; the digital filtering module is used for extracting storage data from the data storage module, and writing the storage data back to the data storage module after performing frequency band expansion and filtering processing on the storage data. By adopting the pressure sensor temperature measuring system, the acquisition and measurement of the temperature and the pressure are finished simultaneously by adopting a single sensor, and synchronization of temperature and pressure measurement and temperature measurement accuracy are ensured.

Description

technical field [0001] The invention relates to the measurement field, in particular to a pressure sensor temperature measurement system. Background technique [0002] For the field of downhole electronic downhole pressure gauges in oil and gas fields, the pressure gauges at home and abroad all need to measure the pressure quickly and accurately at the same time. [0003] Existing schemes for manometers to measure temperature all use independent temperature sensors. The temperature sensors are either set inside the manometer or integrated in the front probe. The temperature sensor is set on the internal circuit of the metal cavity of the pressure gauge. The external heat change needs to pass through the heat conduction of the medium and the pressure gauge shell, and the heat radiation of the air inside the shell can reach the temperature sensor. The temperature measurement requires heat conduction, and the induction lags; the temperature sensor Integrated with the front pro...

AI Technical Summary

Problems solved by technology

The temperature sensor is set on the internal circuit of the metal cavity of the pressure gauge. The external heat change needs to pass through the heat conduction of the medium and the pressure gauge shell, and the heat radiation of the air inside the shell can reach the temperature sensor. The temperature measurement requires heat conduction, and the induction lags; the temperature sensor Integrated with the front probe, temperature and pressure measurements still have asynchronous measurement, which affects the temperature drift correction accuracy of pressure

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