CN209606321U - A kind of peanut oil doping soybean oil discriminating gear of double excitation LIF technology - Google Patents

Abstract

The utility model relates to a kind of peanut oil of double excitation LIF technology to adulterate soybean oil discriminating gear, which includes following part: power module, laser module 1, laser module 2, laser fluorescence probe module 1, laser fluorescence probe module 2, spectrometer module, delay switch module, upper computer module.Fluorescent probe acquires the fluorescence generated in vegetable oil to be measured by laser transmitting laser using silica fibre, during spectrometer receives fluorescence information, realize that the timesharing for the fluorescence information that the LIF spectrum under double laser light source is obtained using two different-waveband laser light sources is received using delay switch.The model database of known peanut oil, soybean oil pure plant oil sample sheet and their miscella sample laser-induced fluorescence spectroscopy is established using host computer after calculating fluorescence intensity, and the fluorescence spectrum for treating measuring plants oil sample sheet carries out Classification and Identification, to be conducive to detect the doping that whether there is soybean oil in peanut oil.

Description

A kind of peanut oil doping soybean oil discriminating gear of double excitation LIF technology

Technical field

The utility model relates to vegetable oil to adulterate differentiation field, the peanut oil doping of specifically a kind of double excitation LIF technology Soybean oil discriminating gear.

Background technique

Well known, oil is indispensable a part in our daily lifes.For comparing animal oil, edible vegetable oil Because that contained unsaturated fatty acid is more than animal oil is more nutritious than animal oil, thus in living vegetable oil utilization rate it is far high In animal oil, wherein being especially to contain with soybean oil and peanut oil.And in fact, because peanut oil price is much higher than soybean oil, Ge Bieshang To seek exorbitant profit, the example that soybean oil is adulterated in peanut oil can be found everywhere dealer.

The characteristic of specific fluorescence can be generated under laser irradiation so as to vegetable oil to distinguish whether adulterate in peanut oil greatly Soya-bean oil.Being analyzed using common fluorescent usually has limitation, as spectral line is few, light intensity is small, ultra-violet (UV) band output is weak, stability is poor, hot The features such as effect is big, and time and effort consuming, it is not easy to fast implement.And laser induced fluorescence (Laser Induced Fluorescence, LIF) technology has the characteristics that spectral resolution height, high sensitivity, fast response time, to examining peanut oil In whether adulterate soybean oil with important researching value and far-reaching influence.And on this basis, using two different-wavebands Laser light source obtain the LIF spectrum under double laser light source, then test result can be made relatively sharp, accurately.

Utility model content

The purpose of the utility model is to provide a kind of peanut oil of double excitation LIF technology to adulterate soybean oil discriminating gear, from And on the basis of existing identification method is insufficient, to realize quick, the accurate detection to soybean oil whether is adulterated in peanut oil.

In order to realize the purpose, the technical solution adopted in the utility model is: providing a kind of peanut of double excitation LIF technology Oil doping soybean oil discriminating gear, the device include following part: power module, laser module 1, laser module 2, laser Fluorescent probe module 1, laser fluorescence probe module 2, spectrometer module, delay switch module, upper computer module；Immersion is miniature One end of fluorescent probe 1 is connected by UV/VIS silica fibre with laser 1, and the other end passes through UV/VIS silica fibre and spectrum One end of the connection of instrument module, immersion cell 2 is connected by UV/VIS silica fibre with laser 2, and the other end passes through UV/VIS Silica fibre is connected with 86 type touching delay-action switchs, and 86 type touching delay-action switchs then with DET4-200-850 USB4000 type Spectrometer connection, last DET4-200-850 USB4000 type spectrometer are connected with host computer.

Preferably, the utility model provides a kind of peanut oil doping soybean oil discriminating gear of double excitation LIF technology, institute Laser fluorescence probe module is stated using the miniature fluorescent probe of immersion, probe uses right angle light path system, so that incident light and glimmering Light reaches optimal separation in detected solution part.

Preferably, the utility model provides a kind of peanut oil doping soybean oil discriminating gear of double excitation LIF technology, institute Spectrometer model DET4-200-850 USB4000 is stated, service band is 200~850nm.

Preferably, the utility model provides a kind of peanut oil doping soybean oil discriminating gear of double excitation LIF technology, institute It states laser module 1 and chooses model CBD-445-20 445nm, the adjustable royal purple optical semiconductor laser of laser power；It is described Laser 2 chooses model SCT-DSL-850nm-2W, the adjustable semiconductor laser of laser power.

Preferably, the utility model provides a kind of peanut oil doping soybean oil discriminating gear of double excitation LIF technology, In Delay switch module is added between laser fluorescence probe module and spectrometer module, which uses 86 type touching delay-action switchs, mesh Be in order to realize the fluorescence information under twin-laser timesharing receive.

The utility model has the advantages that

Compared with prior art, its advantages are embodied in the utility model: laser Induced Fluorescence Technology is applied to peanut The detection of soybean oil whether is adulterated in oil to analyze compared to common fluorescent, there is that easy to operate, spectral resolution is high, sensitivity The features such as height, fast response time.In being analyzed using common fluorescent, make frequently with glow discharge spot lamp (such as high-pressure sodium lamp, xenon) For light source, these light sources usually have limitation, as spectral line is few, light intensity is small, ultra-violet (UV) band output is weak, stability is poor, fuel factor is big The features such as, it is not able to satisfy the excitation needs of various test substances.And time and effort consuming, it is not easy to fast implement.With ordinary light source phase Than laser light source has the characteristics that monochromaticjty is good, brightness is high, high directivity and coherence are strong, is identification substance and its is sitting in body Structure, composition, state and the perfect light source of variation of system.And the present apparatus, while using laser Induced Fluorescence Technology, and Double excitation spectral comparison technology is added on the basis of this, obtains various lasers detection using acting on spectrometer for delay switch The fluorescence intensity of substance of the same race can then make test result relatively sharp, accurate by comparing, and more convincingness.It is applicable in very much The real-time and precise detection of soybean oil whether is adulterated in peanut oil and is promoted.

Detailed description of the invention

Fig. 1 is the structural block diagram of utility model device.

Specific embodiment

The utility model is further elaborated below in conjunction with attached drawing, so that the advantages of the utility model and characteristic It can be easier to be readily appreciated by one skilled in the art.A kind of peanut oil doping soybean oil discriminating gear of double excitation LIF technology is provided, The device includes following part: power module, laser module 1, laser module 2, laser fluorescence probe module 1, laser are glimmering Light probe module 2, spectrometer module, delay switch module, upper computer module.One end of the miniature fluorescent probe 1 of immersion passes through UV/VIS silica fibre is connected with laser 1, and the other end is connect by UV/VIS silica fibre with spectrometer module, and immersion is visited First 2 one end is connected by UV/VIS silica fibre with laser 2, and the other end is touched by UV/VIS silica fibre and 86 types Delay switch is connected, and 86 type touching delay-action switchs are then connect with DET4-200-850 USB4000 type spectrometer, last DET4- 200-850 USB4000 type spectrometer is connected with host computer.

The utility model is obtained on the basis of laser Induced Fluorescence Technology using the laser light source of two different-wavebands LIF spectrum under double laser light source makes its result have more convincingness so that test result is relatively sharp, accurate by comparing.Tool Body realizes that steps are as follows:

One end of the miniature fluorescent probe of the immersion of two kinds of same models by UV/VIS silica fibre respectively with model not Same semiconductor laser is connected, and the laser irradiation that laser emits is entered in vegetable oil to be measured, issues vegetable oil to be measured glimmering Light, then fluorescence is acquired by the miniature fluorescent probe of immersion.Miniature fluorescent probe 1 directly reaches model DET4- through silica fibre 200-850 USB4000, service band are in the spectrometer of 200~850nm.And miniature fluorescent probe 2 is then first via one 86 Type touching delay-action switch again send the fluorescence information after delay to light to realize that the timesharing of the fluorescence information under twin-laser receives In spectrometer.The information is sent into host computer again after spectrometer calculating fluorescence intensity and carries out Classification and Identification, to be conducive to detect It whether there is the doping of soybean oil in peanut oil.

It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting Related claim.

In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.

Claims (5)

1. a kind of peanut oil of double excitation LIF technology adulterates soybean oil discriminating gear, it is characterised in that: the device includes with lower part Point: power module, laser module 1, laser module 2, laser fluorescence probe module 1, laser fluorescence probe module 2, spectrum Instrument module, delay switch module, upper computer module；One end of the miniature fluorescent probe 1 of immersion by UV/VIS silica fibre with Laser 1 is connected, and the other end is connect by UV/VIS silica fibre with spectrometer module, and one end of immersion cell 2 passes through UV/ VIS silica fibre is connected with laser 2, and the other end is connected by UV/VIS silica fibre with 86 type touching delay-action switchs, and 86 Type touching delay-action switch is then connect with DET4-200-850USB4000 type spectrometer, last DET4-200-850USB4000 type light Spectrometer is connected with host computer.

2. a kind of peanut oil of double excitation LIF technology according to claim 1 adulterates soybean oil discriminating gear, feature exists In: the laser fluorescence probe module uses the miniature fluorescent probe of immersion, and probe uses right angle light path system, so that incident light Reach optimal separation in detected solution part with fluorescence.

3. a kind of peanut oil of double excitation LIF technology according to claim 1 adulterates soybean oil discriminating gear, feature exists In: the spectrometer model DET4-200-850USB4000, service band are 200~850nm.

4. a kind of peanut oil of double excitation LIF technology according to claim 1 adulterates soybean oil discriminating gear, feature exists In: the laser module 1 chooses model CBD-445-20445nm, the adjustable royal purple optical semiconductor laser of laser power； The laser 2 chooses model SCT-DSL-850nm-2W, the adjustable semiconductor laser of laser power.

5. a kind of peanut oil of double excitation LIF technology according to claim 1 adulterates soybean oil discriminating gear, feature exists In: delay switch module is added between laser fluorescence probe module and spectrometer module, which touches delay using 86 types and open It closes, in order to realize that the timesharing of the fluorescence information under twin-laser receives.