A kind of in-situ calibration method of sensor
An in-situ calibration and sensor technology, which is applied in the direction of instruments, measuring devices, and electrical devices, can solve problems such as inability to calibrate methods, inability to obtain quantitative calibration data, and inability to perform quantitative calibration, so as to improve work efficiency and reduce costs. Effect
Active Publication Date: 2020-05-22
SUZHOU DONGLING VIBRATION TEST INSTR
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But it only utilizes the excitation unit to carry out qualitative detection on the sensing unit, cannot perform quantitative calibration, and lacks the calibration of its excitation unit, so the calibration method described in this invention cannot obtain accurate quantitative calibration data, only has the function of evaluating whether the sensor has function of the signal output and cannot be used as an accurate method of calibrating
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[0025] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0026] see figure 1 and figure 2 , as shown in the legend, as shown in the legend, an in-situ calibration method of the sensor is realized by the following steps:
[0027] (1) Provide a sensor 1 to be calibrated with an in-situ calibration function, make the sensor 1 to be calibrated in its working position (installed on the DUT 6) to be calibrated, and install the reference sensor 2 on the top surface of the sensor 1 to be calibrated , the sensitivity of reference sensor 2 is S 0 ;
[0028] (2) The excitation signal input line 5 is connected to the drive source 7 and the excitation signal input end 4 of the sensor 1 to be calibrated, and the sensor signal output line...
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The invention discloses an on-station calibration method of sensor, making the sensor to be calibrated under working in situ, installing the reference sensor on the top surface of the sensor to be calibrated, the driving source inputting the drive signal to the excitation unit of the sensor to be calibrated, using the detector including a conditioner to measure the output signal of the reference sensor, and finishing the calibration for the excitation unit of the sensor to be calibrated; removing the reference sensor, and the the driving source inputting the same drive signal to the excitation unit of the sensor to be calibrated, using the detector including a conditioner to measure the sensing unit output signal of the sensor to be calibrated, and finishing the calibration for the sensing unit of the sensor to be calibrated, so as to achieve sensor on-station calibration. By using the sensor of the internally-arranged excitation unit, the method invented achieves sensor on-station calibration, no need of removing the sensor and using the standard vibration table suite to get the accurate calibration result, and effectively improves work efficiency and reduces costs.
Description
technical field [0001] The invention relates to the field of test and measurement, in particular to an in-situ calibration method of a sensor. Background technique [0002] Sensors have become an extremely important tool for obtaining natural and production information, especially for modern industry, if there is no sensor, modern industry will lose its foundation. A large number of sensors are used in modern industrial equipment to detect the operating status of the equipment and realize online detection. The accuracy of the working performance of sensors is closely related to the normal operation of equipment and the personal safety of users. Therefore, the working performance of these sensors must be calibrated in a timely and accurate manner. [0003] The current common sensor calibration method is to separate the sensor to be tested from the equipment, use a standard vibration table set for calibration, and then reinstall it into the equipment. This method can obtain ...
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IPC IPC(8): G01H11/08
CPCG01H11/08
Inventor 亢立吴国雄
Owner SUZHOU DONGLING VIBRATION TEST INSTR