A Method for Improving Measurement Accuracy of Sensors Based on Differential Constraints of Measured Values
A technology with measurement accuracy and differential constraints, which can be used in instruments, special data processing applications, electrical digital data processing, etc., and can solve the problem of low sensor measurement accuracy.
Inactive Publication Date: 2016-06-01
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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[0007] The purpose of the present invention is to solve the problem of low measurement accuracy caused by the sensor’s own resolution, to provide a method for improving the measurement accuracy of the sensor based on the differential constraint of the measurement value, to compensate for the lack of hardware to a certain extent, and to correct the measurement value according to the measurement value information. Approximate ideal values to improve measurement accuracy
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[0038] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention. It should be noted that in the following description, when detailed descriptions of known functions and designs may dilute the main content of the present invention, these descriptions will be omitted here.
[0039] first with figure 1 The linear sensor input and output characteristic curve of the linear sensor, where M represents the intrinsic resolution of the sensor, Xres represents the internal discrete sampling interval of the sensor input, and K is the linear sensor proportional system.
[0040] figure 1 Among them, the dotted straight line is the ideal output characteristic. Due to the characteristics of sensor technology and digitization, such accurate input and output characteristics cannot be obtained in practice. The dotted line curve is the discrete sampling input a...
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The invention discloses a method for improving the measurement accuracy of a sensor based on the differential constraint of the measured value. By determining the number of iterations Nint, the dynamic adjustment of Δt in the iterative process can be realized, and the output of the sensor can be self-adapted, which overcomes the time delay and delay of using the arithmetic mean. Pushing the average does not have the self-adaptability; the method of the present invention is simple in operation, and is suitable for real-time correction of the information processing unit of the smart sensor itself, realizes software compensation for hardware shortage, overcomes the measurement inaccuracy caused by the sensor's own resolution to a certain extent, and improves Measurement accuracy; the method of the present invention can not only improve the accuracy of sensor measurement data, but also has a certain denoising ability, and can be directly used for sensor output data processing.
Description
technical field [0001] The invention belongs to the technical field of sensor signal processing, and more specifically relates to a method for improving sensor measurement accuracy based on differential constraints of measured values, which is used to improve sensor measurement accuracy and remove noise in aspects such as intelligent sensor design and signal denoising interference. Background technique [0002] With the advent of the "information age", as a means of obtaining information, sensor technology has made great progress. The application fields of sensors are becoming more and more extensive, the requirements for them are getting higher and higher, and the needs are becoming more and more urgent. Sensor technology has become one of the important symbols to measure the development level of a country's science and technology. [0003] Because sensors can convert various physical quantities, chemical quantities, and biomass signals into electrical signals, people can ...
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IPC IPC(8): G01D18/00G06F19/00
Inventor 葛树志王刚王维周红坤钱杰秦有宝
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA