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Automatic calibration method of sensor and batch calibration device

An automatic calibration, sensor technology, applied in the direction of automatic recalibration, test/calibration device, measurement device, etc., can solve the problems of complicated processing process and large workload, and achieve the effect of convenient expansion and simple operation

Inactive Publication Date: 2017-01-04
西安翔腾微电子科技有限公司
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is firstly to provide a sensor automatic calibration method, which is used to calibrate the sensor output drift caused by the change of specific environmental variables, avoiding the complexity of the processing process caused by repeatedly adjusting the zero offset and full scale offset during the calibration process , large workload and other issues

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  • Automatic calibration method of sensor and batch calibration device
  • Automatic calibration method of sensor and batch calibration device
  • Automatic calibration method of sensor and batch calibration device

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Embodiment Construction

[0041] The sensor automatic calibration method of the present invention mainly realizes the automatic calibration of the sensor through two major links of pre-calibration and main calibration.

[0042] The pre-calibration stage calculates and determines the configuration parameters of the sensor conditioning chip; the main calibration is based on the pre-calibration, the sensor output is stabilized at the required output value by adjusting the compensation amount, and the calibration compensation value is obtained by using the approximation algorithm.

[0043] Taking the pressure sensor and considering the temperature variable factor as an example, a specific example of an automatic batch calibration method is given below.

[0044] like Figure 1 to Figure 4 As shown, the pressure sensor automatic batch calibration method includes the following steps:

[0045] Step 1] On the premise of confirming that the sensor communication is normal, perform the pre-calibration operation. ...

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Abstract

The invention provides an automatic calibration method of a sensor and a batch calibration device. The automatic calibration method realizes automatic calibration of the sensor through two large links including pre-calibration and main calibration, wherein at a pre-calibration phase, configuration parameters of a sensor regulation chip of the sensor are calculated and determined; the main calibration comprises the steps of stabilizing sensor output to a needed output value through regulating a compensation amount on the basis of the pre-calibration and obtaining a calibration compensation value by adopting an approximation algorithm. Only external excitation with minimum and maximum measuring ranges needs to be applied for one time, calibration of the sensor can be finished; corresponding physical connection expansion can be carried out according to the quantity of a sensor system needing to be calibrated to perform batch calibration on the plurality of sensor systems.

Description

technical field [0001] The invention belongs to the field of electronic circuit design, relates to a sensor automatic calibration method, and also relates to a device and method for realizing batch calibration. Background technique [0002] In the existing sensor calibration and calibration method, it is necessary to repeatedly apply external excitations of the minimum and maximum ranges to the sensor during the calibration process to repeatedly adjust the zero offset and full scale offset, which complicates the processing process and increases the workload. In addition, the traditional sensor system calibration method uses only one circuit board to calibrate one sensor. When dealing with more than two sensor systems, two or more circuit boards need to be used at the same time. For multiple sensor system calibration, multiple circuit boards are used. can no longer meet the requirements. Therefore, as the number of calibrated sensor systems increases, the traditional solutio...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D18/00G01L27/00
CPCG01D18/002G01L27/005
Inventor 余立宁刘敏侠邵刚王晋田泽刘颖
Owner 西安翔腾微电子科技有限公司
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