Non-destructive testing system and method for testing internal quality of fruit by using near-infrared spectra

A near-infrared spectroscopy and non-destructive testing technology, applied in the field of near-infrared spectroscopy, can solve problems such as the inability to realize automatic calibration of the spectrum, and achieve the effect of reducing the impact of noise

Active Publication Date: 2013-04-17
NONGXIN TECH BEIJING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, there is a hand-held near-infrared probe used for non-destructive testing of the internal quality of fruits. The optical fiber probe consists of four LED light sources with different wavelengths, a detection optical fiber, an automatic sampling control system, a light source

Method used

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  • Non-destructive testing system and method for testing internal quality of fruit by using near-infrared spectra
  • Non-destructive testing system and method for testing internal quality of fruit by using near-infrared spectra
  • Non-destructive testing system and method for testing internal quality of fruit by using near-infrared spectra

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Example Embodiment

[0038] Example one

[0039] The present invention proposes a near-infrared spectroscopy non-destructive detection system for the internal quality of fruits. The system includes: a collector and a microcomputer; the collector includes a collection probe (3) and an optical fiber probe installed inside the collector (6) The optical fiber probe (6) is evenly distributed with six smaller diameter optical fibers for light source output, and a larger diameter optical fiber in the middle is used to collect near-infrared spectrum signals; the acquisition probe (3) is provided with There are elastic shading pads (11) and a correction wheel (1); the correction wheel (1) is connected to a stepping motor (2), and the stepping motor (2) is connected to the microcomputer (22).

[0040] The optical fiber probe (6) is connected with the small spectrometer (19) and the light source (20) through a standard SMA905 interface (18).

[0041] The acquisition probe (3) is also provided with an automatic acq...

Example Embodiment

[0048] Example two

[0049] The invention also provides a method for non-destructive detection of the internal quality of fruits by near infrared spectroscopy. image 3 , The method includes:

[0050] A. The micro stepping motor (2) controls the correction wheel (1) to rotate and enters the total reflection reference spectrum measurement state S1;

[0051] B. The microcomputer (22) controls the small spectrometer (19) for total reflection reference spectrum R ref Collection and storage R ref ;

[0052] C. The micro stepping motor (2) controls the correction wheel (1) to rotate, enters the dark spectrum measurement state S2, and the microcomputer (22) controls the light source (20) to turn off;

[0053] D. The microcomputer (22) controls the small spectrometer (19) for dark spectrum R dark Collection and storage R dark ;

[0054] E. The micro stepping motor (2) controls the correction wheel (1) to rotate, enters the sample spectrum measurement state S3, and the microcomputer (22) contro...

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Abstract

The invention provides a non-destructive testing system for testing the internal quality of a fruit by using near-infrared spectra. The non-destructive testing system comprises a collector and a microcomputer, wherein the collector comprises a collecting probe (3) and an optical fiber probe (6) which penetrates through the interior of the collector; an elastic light-shading pad (11) and a correcting wheel (1) are arranged on the collecting probe (3); the correcting wheel (1) is connected with a step motor (2); and the step motor (2) is connected with the microcomputer (22). A whiteboard and a blackboard which can be automatically switched and a through hole are designed inside a light path of the collecting probe to automatically collect the total reflection reference spectrum, a dark spectrum and a sample spectrum and automatically calibrate the spectra, so that noise influence on a detector is reduced; the elastic light-shading pad is arranged at the front part of the collecting probe to prevent interference of ambient light to the near-infrared spectra; and an automatic collecting switch is triggered by a force generated during contact of the elastic light-shading pad and a tested object, thus achieving automatic collection of the spectra.

Description

technical field [0001] The invention relates to the technical field of near-infrared spectroscopy, in particular to a system and method for detecting the internal quality of fruits by near-infrared spectroscopy. Background technique [0002] With the improvement of living standards, consumers have higher and higher requirements for fruit quality. They not only pay attention to the external quality of fruit, but also pay great attention to internal quality such as sugar content and acidity. Destructive detection methods are usually used for the internal quality detection of fruits, and the detection workload is heavy. Each index needs to be detected by different methods, and it is impossible to achieve rapid and non-destructive detection of samples. The use of near-infrared spectroscopy technology can quickly and non-destructively detect the internal quality of fruits such as sugar content, acidity and maturity, and is an efficient detection method. In recent years, the rese...

Claims

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Application Information

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IPC IPC(8): G01N21/25
Inventor 黄文倩陈立平王庆艳张驰郭志明李江波李斌
Owner NONGXIN TECH BEIJING CO LTD
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