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A sensor selection method for optimizing sensor array

A sensor array and sensor technology, applied in the field of sensors, can solve the problems of increasing the cost of sensors and the complexity of data processing

Active Publication Date: 2018-11-06
JIANGSU UNIV
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Problems solved by technology

Although these sensor technologies can identify a variety of substances, the number of sensors in the sensor array is still large compared to the type or quantity of substances detected, which increases the cost of sensors and the complexity of data processing

Method used

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  • A sensor selection method for optimizing sensor array
  • A sensor selection method for optimizing sensor array
  • A sensor selection method for optimizing sensor array

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Embodiment Construction

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0038] Such as figure 1 As shown, the sensor deletion method of the optimized sensor array proposed by the present invention comprises the following steps:

[0039] a) Select sensor array data P (1) ,P (2) ,...P (K) , calculate the Wilks statistical value Λ of the data collected by each sensor k , and choose the sensor that makes it smallest:

[0040]

[0041] where Λ k =|W k | / |T k |, Indicates the serial number of the selected sensor, K is the number of sensors in the array, Indicates the mth characteristic variable value of the kth sensor in the sensor array. W k and T k are the covariance matrix within and between groups of the kth sensor data respectively:

[0042]

[0043] in

[0044]

[0045] Represents the i-th characteristic variable of the k-th sensor and the data of the j-th parallel test for the α-th analy...

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Abstract

The invention discloses a sensor deletion and selection method for an optimization sensor array. The method comprises the steps of a, for all sensor array data, computing a Wilks statistic value of each piece of sensor collection data, and selecting sensors which enable the Wilks statistic values to be minimum; b, successively selecting one kind of sensor data in the unselected sensors to form a measurement matrix with selected sensor data, computing a joint Wilks value, and selecting the sensors which enable the joint Wilks statistic values to be minimum; c, deleting one sensor when the selected sensors satisfy conditions, otherwise reserving the sensors; d, repeating the steps b and c, thereby obtaining the importance ranking of the sensors which provide main information; e, inputting the sensors in the step d for linear judgment and analysis, thereby obtaining classification accuracy and cross verification accuracy; and f, stopping when the sum of the classification accuracy and cross verification accuracy reaches the maximum, thereby obtaining the simplified optimization sensor array combination. According to the method, the number of the sensors in the sensor array can be remarkably reduced, the data processing complexity is reduced, and moreover, the good classification and identification functions are realized.

Description

technical field [0001] The invention relates to a sensor deletion method for optimizing a sensor array, which belongs to the technical field of sensors. Background technique [0002] In recent years, low-cost sensor arrays have become a research hotspot and are widely used for qualitative or semi-quantitative analysis of measurement data. However, in previous studies, an array composed of more sensors is often needed to better identify and classify substances. For example, an array of 16 sensors was used to identify 15 different substances such as monosaccharides, polysaccharides and artificial sugars; 16 different colorimetric sensors were used to detect 14 different millimolar concentrations of natural and artificial sweeteners ; Use 16 different colorimetric sensors to conduct semi-quantitative detection of triacetone triperoxide gas with a concentration of 50ppb to 10ppm; use 36 different colorimetric sensors to identify 20 common indoor organic pollutants with two conc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/16
CPCG16Z99/00
Inventor 鲍煦王赟韩娟
Owner JIANGSU UNIV
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