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Sensor linear correction method and device

A linear correction, sensor technology, applied in the direction of instruments, etc., can solve the problems of reduced measurement system accuracy, low measurement accuracy and stability of the measurement system, etc., to achieve the effect of improving accuracy, improving test accuracy and stability

Inactive Publication Date: 2017-06-13
SHENZHEN YIHUA COMP +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] It is often necessary to use linear sensor devices in measurement systems, such as Hall sensors, magnetoresistive sensors, etc. Although these linear sensor devices have an ideal linear relationship in theory, they are subject to electrical and structural constraints during practical applications. Effects can lead to non-ideal linearity of the actual application process, resulting in reduced accuracy of the measurement system
[0003] This phenomenon has not been further dealt with in the prior art, and the problem of low measurement accuracy and stability of the measurement system needs to be solved urgently

Method used

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Embodiment 1

[0047] figure 1 It is a flow chart of a sensor linearity calibration method provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation where a linear sensor needs to be calibrated. This method can be executed by a sensor linearity calibration device, which can be implemented by hardware and / or or software, for example, it may be a control component or a control program integrated in the measurement system. Such as figure 1 As shown, the method specifically includes the following steps:

[0048] Step S101 , using a sensor to measure at least two standard measuring objects, so as to obtain corresponding calibration measurement data.

[0049] Among them, the thickness sensor in the banknote detector is taken as an example to illustrate, and the thickness is respectively from small to large in order of x 1 , x 2 ,...,x n At least two pieces of standard paper pass through the banknote detector, and then the corresponding at least three ca...

Embodiment 2

[0068] Please refer to figure 2 , figure 2 It is a flow chart of a sensor linearity correction method provided by Embodiment 2 of the present invention. This embodiment is optimized and improved based on the solutions of the above embodiments, and in particular, a specific solution for obtaining calibration measurement data is provided. Such as figure 2 As shown, the method includes:

[0069] Step S1011 , for each of the at least two standard measuring objects, use the sensor to measure at least twice, so as to obtain at least two spare measurement data corresponding to each standard measuring object.

[0070] Step S1012, calculating the mean value of the at least two spare measurement data, so as to obtain the calibration measurement data corresponding to each standard measurement object.

[0071] Among them, the correction measurement data is obtained by collecting the measurement data corresponding to the sensor and each standard measurement object multiple times and...

Embodiment 3

[0077] Please refer to image 3 , image 3 It is a flow chart of a sensor linearity correction method provided by Embodiment 3 of the present invention. This embodiment is based on the solution of the first embodiment above, and optimization and improvement are carried out, and in particular, a specific solution for obtaining calibration measurement data is provided. Such as image 3 As shown, the method includes:

[0078] Step S100, collect the initial value of the sensor at least twice, so as to obtain the average value of the initial value.

[0079] Among them, when the sensor has no input, the initial value of the sensor output is collected multiple times to obtain the average value of the initial value

[0080] Step S1011 , for each of the at least two standard measuring objects, use the sensor to measure at least twice, so as to obtain at least two spare measurement data corresponding to each standard measuring object.

[0081] Step S1012, respectively calculating...

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Abstract

The invention discloses a sensor linear correction method and device. The method comprises the steps of adopting a sensor to measure at least two standard measured objects to obtain corresponding correction measurement data; building a corresponding relation between actual data and the correction measurement data of all standard measured objects, and using two adjacent correction measurement data as a correction interval; measuring an object to be measured through the sensor to obtain corresponding real-time measurement data, and determining the correction interval into which the real-time measurement data falls; according to a linear relation of the correction measurement data which falls into the correction interval and the actual data corresponding to the correction measurement data and by combining the real-time measurement data, calculating the actual data of the object to be measured. In the sensor linear correction method and device, according to linear characteristics of the sensor itself, a multi-section type correction method is designed, the precision of the sensor in the correction process is drastically improved, and the testing precision and stability of a measurement system are improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of electronic device calibration, and in particular to a sensor linearity calibration method and device. Background technique [0002] Measurement systems often need to use linear sensor components, such as Hall sensors, magnetoresistive sensors, etc. Although these linear sensor devices are ideal linear relationships in theory, they are subject to electrical and structural constraints during practical applications. The effect can lead to non-ideal linearity of the actual application process, thus resulting in a reduction in the accuracy of the measurement system. [0003] This phenomenon has not been further dealt with in the prior art, and the problem of low measurement accuracy and stability of the measurement system needs to be solved urgently. Contents of the invention [0004] The invention provides a sensor linearity correction method and device to improve the accuracy of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D18/00
CPCG01D18/00
Inventor 董扬辉
Owner SHENZHEN YIHUA COMP
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