CN104359856B

CN104359856B - Near-infrared nondestructive testing device for fruits

Info

Publication number: CN104359856B
Application number: CN201410664527.4A
Authority: CN
Inventors: 景君; 刘斌; 张艳
Original assignee: TIANJIN AOLV AGRICULTURAL & SIDELINE PRODUCTS GROUP Co Ltd
Current assignee: Proud green group Limited by Share Ltd
Priority date: 2014-11-19
Filing date: 2014-11-19
Publication date: 2017-04-26
Anticipated expiration: 2034-11-19
Also published as: CN104359856A

Abstract

The invention provides a near-infrared nondestructive testing device for fruits. The device comprises a sample rack, a light source, a detector, an optical fiber and an optical fiber probe, wherein the sample rack is a columnar frame provided with a fruit placing table on the top; a through hole which is slightly smaller than a fruit is formed in the middle of the fruit placing table; a turbine lead screw lifter is arranged at the bottom of the frame; an optical fiber probe installation frame which is a hollow cylinder matched with the optical fiber probe in shape and with a first through slot on the side face is arranged on a lifting rod of the lifter; the width of the first through slot is greater than the wire diameter of the optical fiber; the optical fiber probe is erected on the top of the cylinder by virtue of a bump on the optical fiber probe; a hollow wedged block with a second through slot on the side face is arranged between the top of the cylinder and the bump; the hollow part of the wedged block is matched with the optical fiber probe in shape. The angle of the optical fiber is changed by way of arranging the wedged block on the optical fiber probe bracket, so that the problem that light is reflected by fruits is solved. The device provided by the invention is simple in structure, strong in practicality, low in cost and high in accuracy.

Description

Near-infrared fruit the cannot-harm-detection device

Technical field

The invention belongs to infrared detection apparatus field, more particularly to a kind of near-infrared fruit the cannot-harm-detection device.

Background technology

Fruit Non-Destructive Testing, is generally detected, fiber-optical probe using near infrared spectrum diffusing reflection to the pol of fruit Generally all it is vertical irradiation fruit, light Jing fruit occurs irreflexive while can also produce reflex, once it there is reflection Impact, and then the accuracy of impact testing result can be produced on result of detection, one kind how is designed and is reduced or even avoid Guang Jingshui The near infrared detection equipment of fruit back reflection becomes the problem of those skilled in the art's research.

The content of the invention

The problem to be solved in the present invention is to provide a kind of reduction light Jing fruit back reflection degree and then improves accuracy in detection Near-infrared fruit the cannot-harm-detection device.

To solve the above problems, the technical solution used in the present invention：A kind of near-infrared fruit the cannot-harm-detection device, including sample Product frame and FT-IR spectrometers, the spectrometer includes light source, detector, optical fiber and fibre-optical probe, the light that the light source sends Jing incident opticals are irradiated to fruit surface into fibre-optical probe, light Jing fibre-optical probes and reception optical fiber that fruit surface is reflected Treatment Analysis are carried out into the detector, the specimen holder is cylindrical frame, and fruit mounting table is provided with the top of the framework, The middle part of the fruit mounting table has a through hole for being used to set up fruit and be slightly less than fruit size, the bottom of the framework A worm screw lift is provided with, the elevating lever of the worm screw lift is provided with a fibre-optical probe installing rack, the light Fine probe mounting frame is the hollow cylinder for having the first groove with the side of the fibre-optical probe mating shapes, and described first leads to The width of groove is more than the line footpath of the optical fiber, and fibre-optical probe is set up in the top of the cylinder, institute by boss thereon State and side be provided between cylinder top and the boss with the second groove and hollow voussoir, the shape of voussoir hollow space with The mating shapes of the fibre-optical probe.

The voussoir is 10-20 degree with the angle of horizontal direction.

The through hole top is provided with a rubber washer.

The block of outward-dipping setting in a week is provided with the fruit mounting table on the outside of through hole.

The present invention has the advantages and positive effects that：The present invention on fibre-optical probe support by way of arranging voussoir Change the angle of optical fiber, and then solve the problems, such as that light Jing fruit reflects, simple structure is practical, low cost, and the degree of accuracy is high； Elevating mechanism and the height of the convenient adjustment cylinder of the cooperation of cylinder, probe are put in cylinder, while probe and water can be adjusted The distance of fruit, is further ensured that the accuracy of testing result；Voussoir can be farthest with the angle 10-20 degree of horizontal direction Reduce reflected light；Packing ring plays a part of sealing to the surface reflection of light, and reaches adaptation not as a flexible support The purpose of similar shape fruit, the setting of block prevents fruit from falling.

Description of the drawings

Fig. 1 is the structural representation of the present invention；

In figure：1- lifts, 11- swing handles, 12- elevating levers, 2- specimen holders, 3- cylinders, the grooves of 31- first, 4- blocks, 5- Rubber washer, 6- fibre-optical probes, 7- optical fiber, 8- spectrometers, 9- voussoirs.

Specific embodiment

Explanation in greater detail is now carried out to the present invention with reference to the accompanying drawings, as shown in figure 1, a kind of near-infrared fruit Non-Destructive Testing dress Put, including specimen holder 2 and FT-IR spectrometers 8, the spectrometer 8 includes light source, detector, optical fiber 7 and fibre-optical probe 6, described The light Jing incident opticals 7 that light source sends are irradiated to fruit surface into fibre-optical probe 6, the light Jing light that fruit surface is reflected Fibre probe 6 and reception optical fiber 7 carry out Treatment Analysis into the detector, and the specimen holder 2 is cylindrical frame, the framework Top is provided with fruit mounting table, and the middle part of the fruit mounting table has one for setting up fruit and being slightly less than fruit size Through hole, the bottom of the framework is provided with a worm screw lift 1, and the lifting of the worm screw lift 1 catches up with 12 to be provided with The installing rack of one fibre-optical probe 6, the installing rack of the fibre-optical probe 6 is have the with the side of the mating shapes of the fibre-optical probe 6 The hollow cylinder 3 of one groove 31, the width of first groove 31 is more than the line footpath of the optical fiber 7, and fibre-optical probe 6 is by thereon Boss be set up in the top of the cylinder 3, be provided with side between the top of the cylinder 3 and the boss and lead to second Groove and hollow voussoir 9, the shape of the hollow space of voussoir 9 and the mating shapes of the fibre-optical probe 6.

The voussoir 9 is 10-20 degree with the angle of horizontal direction.

The through hole top is provided with a rubber washer 5.

The block 4 of outward-dipping setting in a week is provided with the fruit mounting table on the outside of through hole.

Operation principle：Lift 1 is adjusted first, cylinder 3 is adjusted to into suitable height, first lead to optical fiber 7 by first Groove 31 is put in cylinder 3, and then position relationship as shown in Figure 1 is put into voussoir 9 and fibre-optical probe 6 is set up on cylinder 3, rotation Swing handle 11, by cylinder 3 the suitable position in fruit lower section is raised to, and on specimen holder 2, puts fruit, is opened spectrometer 8 and is detected i.e. Can.

Embodiments of the invention have been described in detail above, but the content is only presently preferred embodiments of the present invention, It is not to be regarded as the practical range for limiting the present invention.All impartial changes made according to the scope of the invention and improvement etc., all should Still belong within this patent covering scope.

Claims

1. a kind of near-infrared fruit the cannot-harm-detection device, it is characterised in that：Including specimen holder and FT-IR spectrometers, the spectrum Instrument includes light source, detector, optical fiber and fibre-optical probe, and the light Jing incident opticals that the light source sends irradiate into fibre-optical probe To fruit surface, light Jing fibre-optical probes that fruit surface is reflected and reception optical fiber carry out processing point into the detector Analysis, the specimen holder is cylindrical frame, and fruit mounting table is provided with the top of the framework, and the middle part of the fruit mounting table has One through hole for being used to set up fruit and be slightly less than fruit size, the bottom of the framework is provided with a worm screw lift, institute The elevating lever for stating worm screw lift is provided with a fibre-optical probe installing rack, and the fibre-optical probe installing rack is and the optical fiber The side of probe mating shapes has the hollow cylinder of the first groove, and the width of first groove is more than the line of the optical fiber Footpath, fibre-optical probe is set up in the top of the cylinder by boss thereon, between the cylinder top and the boss Side is provided with the second groove and hollow voussoir, the shape phase of the shape of voussoir hollow space and the fibre-optical probe Match somebody with somebody.

2. near-infrared fruit the cannot-harm-detection device according to claim 1, it is characterised in that：The voussoir and horizontal direction Angle be 10-20 degree.

3. near-infrared fruit the cannot-harm-detection device according to claim 2, it is characterised in that：The through hole top is provided with one Rubber washer.

4. near-infrared fruit the cannot-harm-detection device according to any one of claim 1-3, it is characterised in that：The fruit is put Put the block for being provided with outward-dipping setting in a week on platform on the outside of through hole.