Magnetic-strip detection sensor fitting algorithm
A technology for detecting sensors and sensors, applied in instruments, measuring devices, using electromagnetic means, etc., can solve the problems of reducing the working effect of sensors and the impact of static performance calibration accuracy, and achieve the effect of improving accuracy
Inactive Publication Date: 2016-10-19
天津大世自动化科技有限公司
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Problems solved by technology
However, in the static calibration, due to the existence of the nonlinear error of the sensor, it will have a great impact on the accuracy of the static performance calibration, thereby reducing the working effect of the sensor.
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Embodiment 1
[0015] Such as figure 1 As shown, a magnetic stripe detection sensor fitting algorithm includes a magnetic stripe 1, a magnetic stripe detection sensor 2, a signal converter 3, a least square method 4 and an iterative search method 5, the magnetic stripe 1 can generate a stable magnetic field, and the magnetic stripe Detection sensor 2 can detect the magnetic field that described magnetic stripe 1 sends, and signal converter 3 is installed in described magnetic stripe detection sensor 2, can convert magnetic field signal input into voltage output, then by least square method 4, can set magnetic The input and output data of the bar sensor is (X i ,U i ) (i=1,2,...,n), wherein n is the number of measuring points of the magnetic strip detection sensor 2, X represents the displacement of the sensor, and U represents the output voltage, so that the fitting line equation is y=kx+b, Then use the iterative search method5 to calculate the equation of each fitted straight line.
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The invention discloses a magnetic-strip detection sensor fitting algorithm. The magnetic-strip detection sensor fitting algorithm relates to a magnetic strip, a magnetic-strip detection sensor, a signal converter, the least square method and the iterative searching method. The magnetic strip can generate a stable magnetic field, the magnetic-strip detection sensor can detect the magnetic field emitted by the magnetic strip, and the signal converter is installed in the magnetic-strip detection sensor and can convert magnetic field signal input into voltage output; the input and output data of the magnetic strip sensor can be set into (Xi, Ui)(i=1,2,...,n) with the least square method, wherein n is the number of measuring points of the magnetic strip detection sensor, X is the displacement of the sensor, U is the output voltage, and therefore the fitting linear equation is set to be y=kx+b; then the equations of fitting straight lines are calculated with the iterative searching method. The maximum working range of the magnetic-strip sensor is obtained with the accurate calculation method instead of the commonly-adopted observing method, and the accuracy of static calibration of the magnetic-strip sensor is greatly improved.
Description
technical field [0001] The invention relates to a fitting algorithm, in particular to a magnetic strip detection sensor fitting algorithm, and belongs to the technical fields of sensor information processing, data fusion and environment modeling. Background technique [0002] With the continuous improvement of automation in modern industrial production, the application of sensors is becoming more and more extensive. As the primary link to realize automatic detection and automatic control, the accuracy, stability and reliability of sensors play a decisive role in the quality of system control. Compared with the sensing methods of photoelectric sensors and visual sensors, the magnetic strip sensor has higher reliability and is not affected by the environment, sunlight and ground conditions; compared with the acousto-optic method, the magnetic induction system is simple, easy to implement, and low in cost. In the process of building a magnetic sensing device, it is necessary t...
Claims
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IPC IPC(8): G01B7/02
CPCG01B7/02
Inventor 朱世波
Owner 天津大世自动化科技有限公司