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Automatic calibration method of air compressor system sensor

An automatic calibration and air compressor technology, applied in thermometer testing/calibration, instruments, scientific instruments, etc., can solve problems affecting the normal operation of the air compressor system, large errors in temperature and pressure parameters, and many operating links, etc., to achieve Improve work efficiency and calibration accuracy, avoid human error, and ensure normal operation

Active Publication Date: 2013-06-05
上海电气自动化集团有限公司
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Problems solved by technology

The calibration process has many and cumbersome operations, low work efficiency, and is easy to introduce human error, which makes the temperature and pressure parameters displayed in real time by the air compressor system have large errors, which affects the normal operation of the air compressor system.

Method used

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  • Automatic calibration method of air compressor system sensor

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Embodiment Construction

[0031] The automatic calibration method of the air compressor system sensor of the present invention, the air compressor system in a specific working environment, the normal working temperature and pressure have a fixed range, according to the characteristics of the data acquisition module and the analog / digital conversion module of the air compressor system , the sensor output signal is converted into a voltage signal by the data acquisition module, and the voltage signal is converted into a digital signal by the analog / digital conversion module, and the output value of the sensor through the data acquisition module and the analog / digital conversion module is:

[0032] (1)

[0033] In the formula: K max — sensor nominal measurement upper limit,

[0034] K min — sensor nominal measurement lower limit,

[0035] u max — the upper limit of the collected voltage signal,

[0036] u min — the lower limit of the collected voltage signal,

[0037] u REF — the reference ...

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Abstract

The invention discloses an automatic calibration method of an air compressor system sensor. The method comprises that according to normal working temperature and a pressure range of an air compressor system in a specific work environment, an output valve of a sensor is calculated through a data acquisition module and an analog-digital conversion module, a calibration formula of the air compressor system sensor is obtained according to a calibration formula of operating characteristics of a linear transducer, and the air compressor system is adjusted to enable a calibration value of the sensor to be zero, so a zero calibration value is obtained; the air compressor system is adjusted to enable the calibration value of the sensor to be a certain fixed value of a range detected by the sensor when the air compressor system normally works, so a slope factor calibration value is obtained; and the zero calibration value and the slope factor calibration value are placed in the air compressor system, and calibration is carried out for an output signal of the sensor according to the zero calibration value and the slope factor calibration value. According to the method, calibration for the sensor can be finished quickly in a high quality mode, existing personal errors caused by manual calibration are avoided, work efficiency and calibration accuracy are improved, labor intensity of calibration is lightened, and normal operation of the air compressor system is guaranteed.

Description

technical field [0001] The invention relates to an automatic calibration method for a sensor of an air compressor system. Background technique [0002] The sensors of the air compressor system generally include temperature sensors and pressure sensors. The data acquisition module of the air compressor system obtains the analog signal output by the sensor, and converts it into a digital signal through the analog / digital conversion module. The current temperature and pressure parameters of the compressor system and control the operation of the air compressor system. Due to the sensor's own error, signal conversion and loss in the data acquisition process, the final sensor detection value may deviate from the actual value. [0003] According to the actual operating conditions of the air compressor system, the sensor is usually calibrated so that the sensor detection data reflects the actual working condition data. The calibration of the sensor is a relatively complicated proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K15/00G01L27/00
Inventor 熊明明
Owner 上海电气自动化集团有限公司
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