CN108593588A - A kind of Portable near infrared moisture detector and its data collecting probe - Google Patents
A kind of Portable near infrared moisture detector and its data collecting probe Download PDFInfo
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- CN108593588A CN108593588A CN201810509266.7A CN201810509266A CN108593588A CN 108593588 A CN108593588 A CN 108593588A CN 201810509266 A CN201810509266 A CN 201810509266A CN 108593588 A CN108593588 A CN 108593588A
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- shell
- data collecting
- light
- collecting probe
- photosensitive sensor
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- 239000000523 sample Substances 0.000 title claims abstract description 38
- 238000001514 detection method Methods 0.000 claims abstract description 23
- 235000020989 red meat Nutrition 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 4
- 238000002955 isolation Methods 0.000 claims description 3
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 4
- 229910052736 halogen Inorganic materials 0.000 abstract description 3
- 150000002367 halogens Chemical class 0.000 abstract description 3
- 235000013372 meat Nutrition 0.000 description 23
- 238000010586 diagram Methods 0.000 description 5
- 238000004611 spectroscopical analysis Methods 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009659 non-destructive testing Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 235000013622 meat product Nutrition 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3554—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for determining moisture content
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3563—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing solids; Preparation of samples therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/359—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/062—LED's
- G01N2201/0627—Use of several LED's for spectral resolution
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a kind of near-infrared data collecting probes for red meat water content detection, including shell, set inside the shell and be along the circumferential direction distributed in housing top end it is several to light source, set photosensitive sensor inside the shell, it is additionally provided with one in the shell and shell is isometric and the cylinder made of opaque material, the photosensitive sensor are located in cylinder.What the present invention popped one's head in detection is transflector light, reduce interference of the light source to photosensitive sensor itself compared to reflection light detection, and use the LED light of specific wavelength, reduce calorific value and data volume compared to full wave halogen lamp, the difficulty for reducing data processing and calculating, so that device is broken away from, host computer realization is independent easily to work.
Description
Technical field
The present invention relates to a kind of near infrared moisture detectors and its data collecting probe for red meat water content detection.
Background technology
With the development of economy with the increasingly raising of Living consumption, people also constantly increase the consumption demand of meat
Add, wherein red meat occupies enormous proportions in meat total output.Red meat as with huge consumption demand meat products,
Water content number directly affect fresh meat processing, storage, trade and a series of edible indexs, be a weight for evaluating its quality
Want parameter.Fresh meat moisture content is excessively high, and it is rotten to easily cause meat for bacterium, mould breeding aggravation；Dehydration drying shrinkage not only makes meat lose
Weight causes direct economic loss, and influences color, flavor and the structural state of meat.So being carried out to red meat moisture fast
Fast non-destructive testing is significant to itself economic value and edible quality.
The traditional detection method of meat moisture content is seasoning, and this method process is cumbersome to be taken longer and have to sample broken
Bad property, quality inspection efficiency is low, deficiency in economic performance.Visible/near infrared technology is due to its quick, efficient, accurate advantage quilt in recent years
It is applied to more and more widely in the non-destructive testing of meat moisture, but existing near infrared moisture detector there are volumes big, behaviour
Make the shortcomings of inconvenient, and light detection is reflected using full wave halogen lamp, not only there is calorific value to be easy to influence greatly
The shortcomings of detection module, the wide spectroscopic data amount of wave-length coverage is big, data processing complex, and cannot reflect the inherent product of meat sample
The result of matter, red meat moisture measurement is usually present larger deviation.
Invention content
It is an object of the invention to overcome drawbacks described above, the Portable near infrared that a kind of performance is stable, accuracy rate is high is provided
Moisture detector and its data collecting probe.
Above-mentioned purpose is achieved through the following technical solutions：
A kind of near-infrared data collecting probe for red meat water content detection, including cylindrical housing, set inside the shell and
Along the circumferential direction be distributed in housing top end it is several to light source, set photosensitive sensor inside the shell, be additionally provided in the shell
One isometric and the cylinder made of opaque material, the cylinder are located at several centers to light source, the light with shell
Dependent sensor is located in cylinder.
Preferably, the light source is eight pairs of LED light, the wavelength of eight pairs of LED light be respectively 415nm, 445nm,
475nm, 530nm, 760nm, 850nm, 940nm and 980nm, a pair of of LED light of each wavelength are symmetricly set on the axis of shell
Line both sides.
Preferably, the open end of the shell is equipped with transparent isolation slide, for preventing detection meat sample or other sundries
It is internal into probe.
Preferably, the open end of the shell is additionally provided with the rubber seal being protected from light, and for being bonded meat sample surface, prevents outer
It is internal that portion's light enters probe.
Include the Portable near infrared moisture detector of the near-infrared data collecting probe.
Preferably, which also includes control handle, and the control handle is equipped with and is used for
Show the liquid crystal display of water content detection result, the reset button for removing current data, for control opening for beginning gathered data
Beginning button and power switch button, the control handle is interior to be equipped with mainboard and power supply.
It is further preferred that the mainboard is the embedded main board based on STM32F4 minimum systems.
The beneficial effects of the invention are as follows：
The present invention inside probe by being arranged cylinder and photosensitive sensor being located in cylinder, when detecting meat sample, by
It is fitted in meat sample in the open end of cylinder, to form darkroom in inner barrel, the detection light that LED light is sent out can not be from meat sample
Surface is directly reflected into darkroom and is received by photosensitive sensor, and must first be transmitted into meat sample, then again inside meat sample
It is reflected into darkroom, therefore, what the present invention popped one's head in detection is really transflector light, and compared to reflection light detection, transflector light can have
Effect reduces interference of the light source to photosensitive sensor itself, and can more reflect the interior quality of red meat meat sample, makes moisture measurement
As a result more accurate.
Light source of the present invention uses the LED light of specific wavelength, and the detection light of these wavelength is not only easy transmission and carries out red meat.
Meanwhile traditional near infrared spectrometer uses full wave halogen lamp, calorific value to be easy to influence detection module greatly, and due to wavelength model
Enclose wide spectroscopic data amount it is big need to by host computer handle spectroscopic data, and the present invention have chosen above-mentioned specific 8 it is related to moisture
The high wavelength of degree has the advantages such as calorific value is few, data volume is few, and data processing and difficulty in computation are low, device is enable to break away from
Host computer, which is realized, independently easily to work.
Therefore, the present invention is directed to the water content detection of red meat, provide it is a kind of it is at low cost, small, easy to use, performance is steady
Fixed, the accurate Portable near infrared moisture detector of result, has a good application prospect.
Description of the drawings
Fig. 1 is the structural schematic diagram of Portable near infrared moisture detector.
Fig. 2 is the axial section structural schematic diagram of near-infrared data collecting probe.
Fig. 3 is the radial section structural schematic diagram of near-infrared data collecting probe.
Fig. 4 is the circuit operation principle schematic diagram of the present invention.
Specific implementation mode
Invention is further described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of Portable near infrared moisture detector for red meat water content detection, it includes near-infrared number
According to acquisition probe 6, control handle 1, the near-infrared data collecting probe 6 is located at the top of control handle 1, the control handle
It is additionally provided with the liquid crystal display 2 for showing water content detection result, the reset button 3 for removing current data on 1, is opened for controlling
The start button 4 and power switch button 5 of beginning gathered data, the control handle 1 is internally provided with mainboard and power supply, described
Mainboard is the embedded main board based on STM32F4 minimum systems.
Fig. 2, Fig. 3 are the structural schematic diagrams of the near-infrared data collecting probe 6, as shown, near-infrared data acquire
Probe 6 includes cylindrical housing 61, is located in shell 61 and is along the circumferential direction distributed in eight pairs of light sources 62 on 61 top of shell, sets
Photosensitive sensor 64 inside the shell is additionally provided with made of an opaque material of the use isometric with shell 61 in the shell 61
Cylinder 63, one end of the cylinder 63 are fixed on the top of shell 61 and the center positioned at eight pairs of light sources 62, cylinder 63 it is another
One end open makes reflection luminous energy enter cylinder 63 and be received by photosensitive sensor 64.
The photosensitive sensor 64 is located at the middle lower section in cylinder 63, and eight pairs of light sources 62 are LED light, wavelength difference
A pair of of LED light for 415nm, 445nm, 475nm, 530nm, 760nm, 850nm, 940nm and 980nm, each wavelength is symmetrical
It is arranged in the central axes both sides of shell 61.
The rubber seal 66 that the open end of the shell 61 is additionally provided with transparent isolation slide 65 and is protected from light.
Fig. 2 also shows a transflector spectrum data gathering principle of the present embodiment.As shown, what light source 62 was sent out
Light irradiating and detecting meat sample, due to being isolated from the outside world inside cylinder 63, detection light can not be directly reflected into cylinder from meat sample surface
63, and it must be first transmitted into meat sample, then enter cylinder 63 from meat sample internal reflection again, to the light being arranged in cylinder 63
Dependent sensor 64 receives.
Fig. 3 is System Working Principle figure.In conjunction with attached drawing, specific implementation is as follows：
First, nearly infrared data's acquisition probe 6 is placed on as shown in Figure 2 on meat sample product to be detected, is made inside probe with outside
Boundary completely cuts off.Power switch button 5 is pressed, the power supply inside control handle 1 starts to power to light source 62 and embedded main board.It presses
After start button 4, embedded main board controls the 62 orderly light on and off of different wave length LED light source by I/O mouthfuls and constant current source module,
Sending drive signal to digital photosensitive sensor 64 simultaneously makes its normal work.Photosensitive sensor 64 is transmitted to embedded main board
Detected illumination degrees of data, embedded main board receive data and according to the programs write, and each wavelength data is substituted into moisture
In detection model, obtains water content detection result and show on the display screen 2.Due to the LED light source using specific wavelength, spectrum number
According to being reduced, therefore the data of photosensitive sensor 64 can be directly stored in embedded main board memory without additional storage mould
Block, to simplify mainboard structure.
Moisture calculation formula is：
Wherein, M is moisture, and X1~X8 is variable, indicates 8 different wave length LED light source spectroscopic datas respectively；A1~
A8 is constant, indicates that each regression coefficient, b are deviation factor, regression coefficient can be by mathematical statistics partially minimum two with deviation factor
Multiplication obtains.
Claims (7)
1. a kind of near-infrared data collecting probe for red meat water content detection, including cylindrical housing, set inside the shell and edge
Circumferencial direction be distributed in housing top end it is several to light source, set photosensitive sensor inside the shell, it is characterised in that：The shell
It is inside additionally provided with one and shell is isometric and the cylinder made of opaque material, the cylinder are located at several centers to light source
The heart, the photosensitive sensor are located in cylinder.
2. near-infrared data collecting probe as described in claim 1, it is characterised in that：The light source is eight pairs of LED light, described
The wavelength of eight pairs of LED light is respectively 415nm, 445nm, 475nm, 530nm, 760nm, 850nm, 940nm and 980nm, Mei Gebo
Long a pair of of LED light is symmetricly set on the central axes both sides of shell.
3. near-infrared data collecting probe as described in claim 1, it is characterised in that：The open end of the shell is equipped with transparent
Isolation slide.
4. near-infrared data collecting probe as described in claim 1, it is characterised in that：The open end of the shell, which is additionally provided with, to be kept away
The rubber seal of light.
5. including the Portable near infrared moisture detector of near-infrared data collecting probe described in claim 1-4 any one.
6. Portable near infrared moisture detector as claimed in claim 5, it is characterised in that：Also include control handle, it is described
Control handle is equipped with for showing the liquid crystal display of water content detection result, the reset button for removing current data, for controlling
System starts the start button and power switch button of gathered data, and mainboard and power supply are equipped in the control handle.
7. Portable near infrared moisture detector as claimed in claim 6, it is characterised in that：The mainboard is to be based on
The embedded main board of STM32F4 minimum systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810509266.7A CN108593588A (en) | 2018-05-24 | 2018-05-24 | A kind of Portable near infrared moisture detector and its data collecting probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810509266.7A CN108593588A (en) | 2018-05-24 | 2018-05-24 | A kind of Portable near infrared moisture detector and its data collecting probe |
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| Publication Number | Publication Date |
|---|---|
| CN108593588A true CN108593588A (en) | 2018-09-28 |
Family
ID=63629091
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810509266.7A Pending CN108593588A (en) | 2018-05-24 | 2018-05-24 | A kind of Portable near infrared moisture detector and its data collecting probe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114428058A (en) * | 2022-01-29 | 2022-05-03 | 中国农业大学 | Corn moisture content detector |
Citations (5)
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|---|---|---|---|---|
| CN101799401A (en) * | 2010-04-19 | 2010-08-11 | 华东交通大学 | Handheld near-infrared probe for nondestructive internal quality testing of fruit and detection method |
| CN101876630A (en) * | 2009-10-27 | 2010-11-03 | 华东交通大学 | Portable fruit quality nondestructive testing device based on LED combined light source |
| CN204705582U (en) * | 2015-06-23 | 2015-10-14 | 中国农业大学 | A kind of integrated portable LED light source detecting device |
| CN106770067A (en) * | 2017-01-14 | 2017-05-31 | 西北农林科技大学 | Portable kiwi fruit sugar the cannot-harm-detection device |
| CN208537408U (en) * | 2018-05-24 | 2019-02-22 | 华中农业大学 | A kind of Portable near infrared moisture detector and its data collecting probe |
-
2018
- 2018-05-24 CN CN201810509266.7A patent/CN108593588A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101876630A (en) * | 2009-10-27 | 2010-11-03 | 华东交通大学 | Portable fruit quality nondestructive testing device based on LED combined light source |
| CN101799401A (en) * | 2010-04-19 | 2010-08-11 | 华东交通大学 | Handheld near-infrared probe for nondestructive internal quality testing of fruit and detection method |
| CN204705582U (en) * | 2015-06-23 | 2015-10-14 | 中国农业大学 | A kind of integrated portable LED light source detecting device |
| CN106770067A (en) * | 2017-01-14 | 2017-05-31 | 西北农林科技大学 | Portable kiwi fruit sugar the cannot-harm-detection device |
| CN208537408U (en) * | 2018-05-24 | 2019-02-22 | 华中农业大学 | A kind of Portable near infrared moisture detector and its data collecting probe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114428058A (en) * | 2022-01-29 | 2022-05-03 | 中国农业大学 | Corn moisture content detector |
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