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Fruit damage detection method and device based on thermal characteristics of different tissues on surface of fruit

A technology of damage detection and thermal characteristics, applied in the direction of electric radiation detectors, etc., can solve the problems of misjudging fruit stem/calyx as damage, high cost, and poor robustness in detecting damage, achieving good reliability and high accuracy. Effect

Active Publication Date: 2016-01-13
杭州诺田智能科技有限公司
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Problems solved by technology

However, these non-destructive testing methods are not robust enough to detect damage, and the cost is high, and how to avoid misjudging the fruit stem / calyx as damage while identifying damage is still a big problem

Method used

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  • Fruit damage detection method and device based on thermal characteristics of different tissues on surface of fruit
  • Fruit damage detection method and device based on thermal characteristics of different tissues on surface of fruit
  • Fruit damage detection method and device based on thermal characteristics of different tissues on surface of fruit

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with drawings and embodiments.

[0036] Such as figure 1 As shown, the present invention comprises bracket 2, thermopile sensor 3, single-chip microcomputer 4 and PC machine 5, and fruit sample 1 is placed on bracket 2 top, and bracket 2 bottom center is equipped with thermopile sensor 3, and thermopile sensor 3 wears The bottom end of the bracket 2 is towards the bottom of the fruit sample 1, there is a gap between the top of the thermopile sensor 3 and the bottom of the fruit sample 1, and the thermopile sensor 3 is connected with the PC 5 through the single-chip microcomputer 4; The data is transmitted to the single-chip microcomputer 4, and the single-chip microcomputer 4 converts the original data into temperature data and transmits it to the PC 5, and the PC 5 processes and displays the temperature data.

[0037] The thermopile sensor 3 adopts an infrared array thermopile sensor, which includes ...

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Abstract

The invention discloses a fruit damage detection method and a device based on thermal characteristics of different tissues on the surface of a fruit. Temperature data of different regions of interest on a fruit sample are acquired through a thermopile sensor; the temperature data are subjected to compression and Fourier transform analysis sequentially and then curve peaks are extracted to serve as characteristic values; and the characteristic values are inputted to a least squares linear classifier for classified training, and the to-be-detected fruit is detected. The device comprises a bracket, the thermopile sensor, a single chip microcomputer and a PC. A damage part is recognized by using the thermal characteristics of different tissues on the surface of the fruit, reliability is good, and accuracy is high.

Description

technical field [0001] The invention relates to a food detection method and device, in particular to a fruit damage detection method and device based on the thermal characteristics of different tissues on the fruit surface. Background technique [0002] The presence or absence of damage is one of the important bases for fruit grading, which is strictly regulated in the fruit grading standards of various countries in the world. Mechanical damage is the main factor causing postharvest fruit loss. Mechanical damage will not only cause sensory changes in fruits and reduce quality, but also increase the risk of microbial infection, increase fruit decay, shorten shelf life, and seriously affect quality and economic benefits (Guo Lujia, Li Ping, Hou Xiaorong, etc. Fruit and Vegetable Advances in Research on Postharvest Mechanical Damage Characteristics. Food Industry Science and Technology [J], 2013,34(1):389-91,96.). What's more serious is that the damaged tissue will also provi...

Claims

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Application Information

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IPC IPC(8): G01J5/10
Inventor 饶秀勤高迎旺刘光远周鸣川应义斌
Owner 杭州诺田智能科技有限公司
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