Unlock instant, AI-driven research and patent intelligence for your innovation.

A Taste Recognition Method of Electronic Tongue Based on Local Discrimination Preserving Projection

A technology that maintains projection and recognition methods. It is applied to pattern recognition in signals, character and pattern recognition, and computer components. It can solve problems such as outliers or outlier effects, so as to enhance robustness and improve accuracy. , the effect of increasing tolerance

Active Publication Date: 2021-02-26
CHONGQING UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the discriminativeness of this locally preserving discriminative projection method is global and is easily affected by outliers or outliers

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Taste Recognition Method of Electronic Tongue Based on Local Discrimination Preserving Projection
  • A Taste Recognition Method of Electronic Tongue Based on Local Discrimination Preserving Projection
  • A Taste Recognition Method of Electronic Tongue Based on Local Discrimination Preserving Projection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0077] The electronic tongue system of this embodiment is composed of bare metal electrode sensor arrays, and the metal electrodes are gold electrodes, platinum electrodes, palladium electrodes, tungsten electrodes and silver electrodes respectively, and are used to detect 13 kinds of common drinkable substances in daily life, including beer, Red wine, white wine, black tea, Maofeng tea, Pu'er tea, oolong tea, coffee, milk, cola, vinegar, medicine and salt. The specific sample size is shown in Table 1:

[0078] Table 1

[0079] sample beer wine Liquor black tea Maofeng tea Puer tea oolong tea coffee milk Cola vinegar medicine Salt total quantity 19 8 6 9 9 9 9 9 9 6 9 6 6 114

[0080] 1. Data detection

[0081] In order to test the validity of the model for the recognition of electronic tongue data, the electrolytic cell was directly exposed to the air at room temperature (25±1°C), and the liquid samples were measu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an electronic tongue taste recognition method with partial discrimination and projection preservation, which comprises the following steps: step 1, establishing a subspace expression model according to sample X and label y; step 2, solving the projection matrix W; step 3, training classification Machine: After obtaining the projection matrix W through step 2, map the original data to a new space Z, use the projection data Z and label y to train a classifier, and identify liquid samples. Due to the optimization model in step 1 of the present invention, the projected data space can not only maintain the local manifold structure, but also have local discrimination; the local manifold structure maintenance refers to the projection of similar data points in the original space to low-dimensional The local discriminant means that when constructing the discriminant, only local data points are considered to reduce the sensitivity to outliers or outliers. Therefore, the present invention has the advantages of enhancing the robustness of the algorithm and improving the accuracy of taste detection.

Description

technical field [0001] The invention belongs to the field of taste detection of an electronic tongue. Background technique [0002] As a bionic taste system, the electronic tongue has been widely used in food testing, medical analysis and environmental monitoring. The electronic tongue is a multi-sensor system composed of a set of non-specific, low-selectivity, and high-cross-sensitivity sensing arrays. Combined with pattern recognition or multivariate analysis methods, it can achieve qualitative and quantitative analysis of liquid samples. [0003] According to the type of sensor, it can be roughly divided into potential electronic tongue, voltammetric electronic tongue, acoustic wave electronic tongue and biological electronic tongue. The electronic tongue used in the present invention is based on the multi-frequency large-scale pulse voltammetry electronic tongue. The electronic tongue obtains more electrochemical information in the solution components by applying multi-...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06K9/62G01N27/26
CPCG01N27/26G06F2218/04G06F2218/08G06F18/2135G06F18/24147G06F18/214
Inventor 张磊王雪菡王姗姗段青言
Owner CHONGQING UNIV