Pressure sensor online calibration system based on ZigBee
A pressure sensor, calibration system technology, applied in signal transmission system, force/torque/work measurement instrument calibration/test, measurement of fluid pressure, etc. question
Pending Publication Date: 2021-12-28
SHANDONG UNIV OF TECH
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However, the system adopts the data acquisition and network communication method of distributed gas sensors. This connection method is relatively complicated, and it will cause a certain process error to the obtained value, so that the data deviates from the real value, making the calibration value calculated by the online calibration method low precision
[0008] Patent CN206095281 U discloses an online calibration device for temperature and pressure integrated sensors, which solves the problem that the current pipeline installed sensors of this type cannot be calibrated
However, the degree of intelligence of this device is low, and it is not enough to be widely used in the current environment of rapid development, so it is necessary to improve the design on the basis of this structure
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[0032] The ZigBee-based pressure sensor online calibration system and method according to the present invention will be further explained and described below in conjunction with the accompanying drawings and specific embodiments. However, the explanation and description do not constitute an improper limitation on the technical solution of the present invention.
[0033] figure 1 It is a simple structural block diagram of the ZigBee-based pressure sensor online calibration system described in the present invention.
[0034] Such as figure 1 As shown, the ZigBee-based pressure sensor online calibration system in this embodiment mainly includes three aspects, namely, data collection of the lower computer, data processing of the upper computer, and real-time data display and alarm of the Android APP.
[0035] Among them, the networking part of the sensor 1-1 is carried out by using the ZigBee module, and adopts a star topology, so when networking, only the coordinator 1-2 and t...
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The invention discloses a pressure sensor online calibration system based on ZigBee, and relates to the field of online calibration and detection after sensors in oil fields are used. The system mainly comprises three aspects of contents, namely data acquisition of a lower computer, data processing of an upper computer and data real-time display and alarm of an Android APP. During data processing, a user can set an APP alarm threshold value according to actual requirements, and when the transmitted data is higher than the threshold value, the user can receive an alarm prompt and then perform data processing. According to the online calibration method, after data of a high-precision sensor and data of other sensors are compared, the sensors with large error deviation are locked, then data fusion processing is carried out, and the sensors to be calibrated and the locked sensors are calibrated according to the data of the other sensors. Therefore, the truth and reliability of the pressure value during sensor data acquisition and fusion result calculation are ensured, and the sensor calibration precision is improved at the same time.
Description
technical field [0001] The invention relates to the calibration detection of a pressure sensor in an oil field after being used for a period of time, belongs to the field of on-line detection, in particular to an on-line calibration system of a pressure sensor based on ZigBee. Background technique [0002] Petroleum plays a vital role in the development of a country. A large number of pressure sensors will be used in the process of ensuring the smooth exploitation of oil to detect the pressure value of the pipeline to avoid accidents. However, after the sensor is used for a period of time, due to the influence of various factors, the measurement deviation will increase and the measurement accuracy will decrease, which requires calibration. For now, the sensor calibration technology used is not perfect, especially the online calibration needs to be further improved, whether it is the collection and transmission of sensor data or the processing of data, there is a problem of l...
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IPC IPC(8): G01L25/00G01L27/00G08C17/02
CPCG01L25/00G01L27/005G08C17/02
Inventor 庄须叶李新硕李平华张佳宁
Owner SHANDONG UNIV OF TECH