CN106770078A - A kind of LIF food detector - Google Patents
A kind of LIF food detector Download PDFInfo
- Publication number
- CN106770078A CN106770078A CN201610998067.8A CN201610998067A CN106770078A CN 106770078 A CN106770078 A CN 106770078A CN 201610998067 A CN201610998067 A CN 201610998067A CN 106770078 A CN106770078 A CN 106770078A
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- laser
- data acquisition
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- workbench
- base
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- 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
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
- G01N21/643—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes" non-biological material
-
- 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
- G01N2201/061—Sources
- G01N2201/06113—Coherent sources; lasers
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- Immunology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Optics & Photonics (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a kind of LIF food detector, including base and detection workbench, the detection workbench is arranged on base, support frame is connected between workbench and base, support frame bottom surface builds data acquisition device in region, data acquisition device is connected with DSP data processing modules, DSP data processing modules are connected to computer, DSP data processing modules are associated with detection workbench, detection workbench side is provided with laser, convex lens are provided with outside the laser port of laser upper end, laser is fixed on two-dimentional micro actuator top, two-dimentional micro actuator is fixed on lowering or hoisting gear, lowering or hoisting gear is arranged on base top.The present invention can quickly detect the concentration of determinand in food by appropriate Signal acquiring and processing, and practical and convenient, accuracy is high.
Description
Technical field
The present invention relates to food detector technical field, specially a kind of LIF food detector.
Background technology
The safe condition of modern society people growing interest food, it is especially exceeded to food additives, residues of pesticides and
The related data information growing interest of unauthorized substances is added in food.
Such detector of prior art is primarily present positioning inaccurately, detection mode tradition, the low problem of sensitivity.
The content of the invention
It is an object of the invention to provide a kind of LIF food detector, possesses Signal acquiring and processing fast
Speed, detection accuracy advantage high.
To achieve the above object, the present invention provides following technical scheme：A kind of LIF food detector, including
Base and detection workbench, the detection workbench are arranged on base, and support frame, support frame are connected between workbench and base
Data acquisition device is built in bottom surface region, data acquisition device is connected with DSP data processing modules, DSP data processing moulds
Block is connected to computer, and DSP data processing modules are associated with detection workbench, and detection workbench side is provided with laser,
Convex lens are provided with outside the laser port of laser upper end, laser is fixed on two-dimentional micro actuator top, and two-dimentional micro actuator is fixed on liter
On falling unit, lowering or hoisting gear is arranged on base top.
Preferably, the detection workbench includes NaOH solution tank NaOH to be measured, capillary and sensing element, and sensing element is molten with to be measured
Flow container is worked in coordination, and sensing element front end is provided with capillary, and capillary is stretched into NaOH solution tank NaOH to be measured.
Preferably, loophole is offered on the NaOH solution tank NaOH bottom surface to be measured.
Preferably, the data acquisition device includes microcobjective, filter module, optical filter, photomultiplier and data
Collector, microcobjective and loophole are arranged on same vertical line, and microcobjective is adjacent with filter module, filter module and
Photomultiplier is connected, and photomultiplier top is provided with optical filter, and photomultiplier is connected to data acquisition unit, data acquisition
Device transmits signals to DSP data processing modules.
Preferably, the filter module is followed successively by dichroscope, condenser lens, logical filter, band logical filter long from top to bottom.
Compared with prior art, beneficial effects of the present invention are as follows：
The present invention is by setting capillary and laser and registration, two dimension is adjustable, and laser excitation is by biology compatible reaction
And the determinand for making to be connected to the mark on sensing element surface and having sends fluorescence and collects, then by appropriate signal
Collection and treatment, you can the concentration of determinand in detection food, it is simple and quick, and filter module is adjusted, use
Low-angle incident-type light path design, obtains maximum detection sensitivity, can be used for the detection of micro-example.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is structure detection workbench schematic diagram of the present invention；
Fig. 3 is structured data harvester schematic diagram of the present invention.
In figure：1- bases, 2- lasers, 3- detection workbench, 31- NaOH solution tank NaOHs to be measured, 32- capillaries, 33- sensing elements
Part, 34- loopholes, 4- data acquisition devices, 41- microcobjectives, 42- filter modules, 43- optical filters, 44- photomultipliers,
45- data acquisition units, 5-DSP data processing modules, 6- computers, 7- two dimension micro actuators, 8- lowering or hoisting gears, 9- convex lens, 10-
Support frame.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1-3 are referred to, the present invention provides a kind of technical scheme：A kind of LIF food detector, including bottom
Seat 1 and detection workbench 3, the detection workbench 3 are arranged on base 1, and support frame 10 is connected between workbench 3 and base 1,
Support frame 10 builds data acquisition device 4 in bottom surface region, and data acquisition device 4 is connected with DSP data processing modules 5, DSP
Data processing module 5 is connected to computer 6, and DSP data processing modules 5 are associated with detection workbench 3, detect workbench 3 one
Side is provided with laser 2, and convex lens 9 are provided with outside the upper end laser port of laser 2, and laser 2 is fixed on two-dimentional micro actuator 7
Portion, two-dimentional micro actuator 7 is fixed on lowering or hoisting gear 8, and lowering or hoisting gear 8 is arranged on the top of base 1.
It is described detection workbench 3 include NaOH solution tank NaOH to be measured 31, capillary 32 and sensing element 33, sensing element 33 with it is to be measured
NaOH solution tank NaOH 31 is worked in coordination, and the front end of sensing element 33 is provided with capillary 32, and capillary 32 is stretched into NaOH solution tank NaOH to be measured 31, passed through
The effect testing sample of capillary 32 enters and reflects a period of time, and the transmitting golden light of laser 2 simultaneously enters sensing element 33, lures into glimmering
Light reflects, simple to operate quick,
Loophole 34 is offered on the bottom surface of NaOH solution tank NaOH to be measured 31, is easy to gather the situation of fluorescent reflection, the data to adopt
Acquisition means 4 include microcobjective 41, filter module 42, optical filter 43, photomultiplier 44 and data acquisition unit 45, microcobjective
41 are arranged on same vertical line with loophole 34, and microcobjective 41 is adjacent with filter module 42, filter module 42 and photoelectricity
Multiplier tube 44 is connected, and the top of photomultiplier 44 is provided with optical filter 43, and photomultiplier 44 is connected to data acquisition unit 45, number
DSP data processing modules 5 are transmitted signals to according to collector 45, strong and weak by signal Analysis can learn the dense of test substance
Degree, the filter module 42 is followed successively by dichroscope, condenser lens, logical filter, band logical filter long from top to bottom, obtains great
Detection sensitivity can be widely applied to the other fields such as food, medical science, environmental project, agricultural simultaneously.
Operation principle：When using this kind of LIF food detector, sensing element 33 is put into determinand molten
In liquid, under the effect of capillary 32, solution enters capillary 32, after reaction certain hour, opens laser 2, and laser is being all-trans
Mode into sensing element 33 is penetrated, the evanescent waves produced during multihop propagation excite the fluorescent material for being attached to its surface, glimmering
Stimulative substance sends fluorescence, enters after filter module 42, optical filter 43, photomultiplier 44 are acted on after being caught through microcobjective 41
Data acquisition unit 45, and the electric signal for being converted into being directly proportional to fluorescence intensity by DSP data processing modules 5, are sent to computer 6
Be analyzed treatment, computer 6 analyze and process after to data be directly proportional to the concentration of test substance, by the strong of signal Analysis
The weak concentration that can learn test substance.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding can carry out various changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention
And modification, the scope of the present invention be defined by the appended.
Claims (5)
1. a kind of LIF food detector, including base（1）With detection workbench（3）, it is characterised in that：The inspection
Survey workbench（3）It is arranged on base（1）On, workbench（3）With base（1）Between be connected with support frame（10）, support frame（10）Under
Data acquisition device is built in base surface area（4）, data acquisition device（4）With DSP data processing modules（5）It is connected, DSP data
Processing module（5）It is connected to computer（6）, DSP data processing modules（5）With detection workbench（3）It is associated, detect workbench
（3）Side is provided with laser（2）, laser（2）Convex lens are provided with outside the laser port of upper end（9）, laser（2）It is fixed on two
Dimension micro actuator（7）Top, two-dimentional micro actuator（7）It is fixed on lowering or hoisting gear（8）On, lowering or hoisting gear（8）It is arranged on base（1）On
Side.
2. a kind of LIF food detector according to claim 1, it is characterised in that：The detection workbench
（3）Including NaOH solution tank NaOH to be measured（31）, capillary（32）And sensing element（33）, sensing element（33）With NaOH solution tank NaOH to be measured（31）Mutually
It is engaged, sensing element（33）Front end is provided with capillary（32）, capillary（32）Stretch into NaOH solution tank NaOH to be measured（31）In.
3. a kind of LIF food detector according to claim 2, it is characterised in that：The NaOH solution tank NaOH to be measured
（31）Loophole is offered on bottom surface（34）.
4. a kind of LIF food detector according to claim 1, it is characterised in that：The data acquisition dress
Put（4）Including microcobjective（41）, filter module（42）, optical filter（43）, photomultiplier（44）And data acquisition unit（45）,
Microcobjective（41）With loophole（34）It is arranged on same vertical line, microcobjective（41）With filter module（42）It is adjacent,
Filter module（42）With photomultiplier（44）It is connected, photomultiplier（44）Top is provided with optical filter（43）, photomultiplier transit
Pipe（44）It is connected to data acquisition unit（45）, data acquisition unit（45）Transmit signals to DSP data processing modules（5）.
5. a kind of LIF food detector according to claim 1, it is characterised in that：The filter module
（42）Dichroscope, condenser lens, logical filter, band logical filter long are followed successively by from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610998067.8A CN106770078A (en) | 2016-11-14 | 2016-11-14 | A kind of LIF food detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610998067.8A CN106770078A (en) | 2016-11-14 | 2016-11-14 | A kind of LIF food detector |
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| Publication Number | Publication Date |
|---|---|
| CN106770078A true CN106770078A (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610998067.8A Pending CN106770078A (en) | 2016-11-14 | 2016-11-14 | A kind of LIF food detector |
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| Country | Link |
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| CN (1) | CN106770078A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682754A (en) * | 2017-10-19 | 2019-04-26 | 中国石油化工股份有限公司 | Multichannel analysis of stability analyzer |
| CN110057808A (en) * | 2019-05-27 | 2019-07-26 | 中国人民解放军军事科学院军事医学研究院 | Sample swivel mount and Raman spectrum detector |
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| US20020113136A1 (en) * | 2000-09-18 | 2002-08-22 | Talley Douglas G. | Optical patternation method |
| WO2002090955A1 (en) * | 2001-05-04 | 2002-11-14 | Niton Corporation | X-ray fluorescence combined with laser induced photon spectroscopy |
| CN1548944A (en) * | 2003-05-20 | 2004-11-24 | 中国科学院大连化学物理研究所 | Micro fluid control chip laser inducing fluorometric analysis instrument |
| CN1563998A (en) * | 2004-04-16 | 2005-01-12 | 南京大学 | Microcurrent controlled chip detection combiner having general and integral and high efficiency radiation |
| CN2736759Y (en) * | 2004-07-22 | 2005-10-26 | 中国科学院大连化学物理研究所 | Micro flow controlled chip laser induction fluorescent analyzer |
| CN103063646A (en) * | 2013-01-14 | 2013-04-24 | 武汉大学 | Dual-purpose laser-induced fluorescence detecting system |
| CN204575538U (en) * | 2015-05-08 | 2015-08-19 | 罗强 | A kind of laser-induced fluorescence (LIF) food detector |
-
2016
- 2016-11-14 CN CN201610998067.8A patent/CN106770078A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020113136A1 (en) * | 2000-09-18 | 2002-08-22 | Talley Douglas G. | Optical patternation method |
| WO2002090955A1 (en) * | 2001-05-04 | 2002-11-14 | Niton Corporation | X-ray fluorescence combined with laser induced photon spectroscopy |
| CN1548944A (en) * | 2003-05-20 | 2004-11-24 | 中国科学院大连化学物理研究所 | Micro fluid control chip laser inducing fluorometric analysis instrument |
| CN1563998A (en) * | 2004-04-16 | 2005-01-12 | 南京大学 | Microcurrent controlled chip detection combiner having general and integral and high efficiency radiation |
| CN2736759Y (en) * | 2004-07-22 | 2005-10-26 | 中国科学院大连化学物理研究所 | Micro flow controlled chip laser induction fluorescent analyzer |
| CN103063646A (en) * | 2013-01-14 | 2013-04-24 | 武汉大学 | Dual-purpose laser-induced fluorescence detecting system |
| CN204575538U (en) * | 2015-05-08 | 2015-08-19 | 罗强 | A kind of laser-induced fluorescence (LIF) food detector |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682754A (en) * | 2017-10-19 | 2019-04-26 | 中国石油化工股份有限公司 | Multichannel analysis of stability analyzer |
| CN109682754B (en) * | 2017-10-19 | 2021-10-01 | 中国石油化工股份有限公司 | Multi-channel stability analyzer |
| CN110057808A (en) * | 2019-05-27 | 2019-07-26 | 中国人民解放军军事科学院军事医学研究院 | Sample swivel mount and Raman spectrum detector |
| US11971358B2 (en) | 2019-05-27 | 2024-04-30 | Academy Of Military Medical Sciences | Sample rotating rack and Raman spectrum detector |
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Application publication date: 20170531 |
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