CN203324188U - Fluorescent oxygen sensor - Google Patents
Fluorescent oxygen sensor Download PDFInfo
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- CN203324188U CN203324188U CN2013203087703U CN201320308770U CN203324188U CN 203324188 U CN203324188 U CN 203324188U CN 2013203087703 U CN2013203087703 U CN 2013203087703U CN 201320308770 U CN201320308770 U CN 201320308770U CN 203324188 U CN203324188 U CN 203324188U
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Abstract
The utility model discloses a fluorescent oxygen sensor comprising a shell with an inner cavity, a main circuit board, a photoelectric element, a light source element and a light-sensitive element, wherein the main circuit board, the photoelectric element, thelight source element and the light-sensitive element are mounted in the inner cavity of the shell, wherein a plurality of gas diffusion holes for gas to enter into the inner cavity are formed on the shell; the photoelectric element and the light source element are respectively electrically connected with the main circuit board; the light sensor comprises a substrate and an oxygen fluorescent sensitive luminescent layer which is made from an oxygen fluorescent sensitive luminescent material on the substrate; the light-sensing element is arranged on a light path of the light source element in a manner of positioning the oxygen fluorescent sensitive luminescent layer towards the light source element; the oxygen fluorescent sensitive luminescent layer of the light-sensitive element is excited by light emitted by the light source element, fluorescent light is generated, and the fluorescent light is transmitted to the photoelectric element through the substrate and received by the photoelectric element to generate a corresponding electric signal. The fluorescent oxygen sensor is high in sensitivity, wide in linearity range and good in stability, and is capable of realizing real-time measurement of oxygen in an environment.
Description
Technical field
The utility model relates to a kind of gas sensor, relates in particular to a kind of fluorescence oxygen sensor.
Background technology
The analysis of oxygen is measured and is widely used in the numerous areas such as laboratory, biology, medical science, automobile making, chemical industry, the energy, military affairs.Oxygen sensor is the most ripe class sensor of most study, technology in all gas sensor, and its annual production has accounted for more than 40% of all gas sensor, occupies first place.
Raising along with people's living standard, the concept of health-care air-conditioner progressively is promoted, the space air also demand of automatic air-exchanging of monitoring is also grown to even greater heights, some air-conditioning producer has proposed the concept of oxygen bar's air-conditioning for this reason, has expedited the emergence of the heavy demand of lambda sensor in this field simultaneously.In automotive field, along with enforcing and the raising of automobile exhaust emission standard of motor car engine EFI, promoted the application of lambda sensor at automotive field, every annual consumption reaches more than one hundred million.With lambda sensor, its oxygen content is monitored in the metallurgical and chemical industry production run, in order to further carry out the adjusting of air gas, reached the purpose that energy-saving and environmental protection and high-quality are smelted.Along with development and the progress of social economy and military technology, lambda sensor and smart instrumentation thereof have been widely used in the fields such as national defence scientific research, auto industry, chemical metallurgy, medical environmental protection, food brewing.
Lambda sensor can be divided into galvanochemistry type lambda sensor, optical fiber type lambda sensor, Thermomagnetic type lambda sensor, semi-conductor electricity resistive lambda sensor etc. according to the principle of work difference.At present practical oxygen sensor mainly comprises the leaded oxygen sensor, concentration cell type zirconia oxygen, semi-conductor electricity resistance type titanium dioxide oxygen sensor of the traditional electrical principles of chemistry and the optical fiber oxygen sensor of very few Fluorescence Quenching Principle, the lambda sensor of different principle because of its separately characteristic cause its applicable scope difference.By contrast, the optical oxygen sensing technology because of simple to operate, highly sensitive, selectivity is good, do not consume test substance, be easy to microminiaturization, use safety and can carry out the attention that the advantage such as on-line monitoring enjoys people.
To be oxygen have quenching effect to the fluorescence of some fluorescent materials to the principle of work of fluoroscopy oxygen sensor, thereby cause the reduction of its fluorescence intensity and the shortening of fluorescence lifetime, the fluorescence intensity of fluorescent material or life-span and oxygen concentration are linear, just can draw the concentration of oxygen by fluorescence intensity or the life-span of measuring under aerobic and oxygen free condition.The patents such as CN200810070821.7, CN201010532981.6, CN200910205946.0 disclose the synthetic method of relevant Luminescence based Oxygen Sensor sensitive material and can be used for the theoretic discussion of Luminescence based Oxygen Sensor, but only limit to the experimental phase, not yet have this type of oxygen-sensitive material for practical Luminescence based Oxygen Sensor, for the Real-Time Monitoring to environment oxygen.
The utility model content
The technical problems to be solved in the utility model is, for the above-mentioned defect of prior art, provide a kind of highly sensitive, the range of linearity is wide, good stability, can realize the fluorescence oxygen sensor of oxygen the real time measure in environment.
The utility model solves the technical scheme that its technical matters adopts: a kind of fluorescence oxygen sensor is provided, comprises the housing with inner chamber and be arranged on main circuit board, photovalve, light source component and the light activated element in described housing inner chamber; Described housing is provided with several gas diffusion holes that supplied gas enters described inner chamber; Described photovalve and light source component are electrically connected with described main circuit board respectively;
Described light activated element comprises substrate and is formed on described on-chip oxygen-sensitive fluorescent luminescent layer by the oxygen-sensitive fluorescent luminescent material; Described light activated element is arranged on the light path of described light source component with described oxygen-sensitive fluorescent luminescent layer towards described light source component, the oxygen-sensitive fluorescent luminescent layer of the described light activated element of optical excitation that described light source component sends produces fluorescence, fluorescence sees through described substrate and is transmitted into described photovalve, and described photovalve produces corresponding electric signal after receiving fluorescence.
Preferably, described fluorescence oxygen sensor also comprises filter element, described filter element is arranged on the light path of described light source component and between described light source component and light activated element, and the light that described light source component sends is transmitted into described light activated element after described filter element filters again.
Preferably, described light activated element and described light source component opposing parallel, the parallel described light activated element of described photovalve and light source component or relative described light activated element and light source component tilt and are positioned at substrate one side of described light activated element, and the angle of described inclination is less than 90 °; Or,
The relatively described light source component of described light activated element is obliquely installed, and the angle of described inclination is less than 90 °; Described photovalve is relative with described light source component vertical and be positioned at substrate one side of described light activated element.
Preferably, described main circuit board is provided with signal output pin and Power supply pin, and described signal output pin and Power supply pin stretch out respectively described housing.
Preferably, described housing is provided with waterproof ventilated membrane, and described waterproof ventilated membrane covers on described gas diffusion hole.
Preferably, described light source component comprises the modulation of source circuit board be electrically connected with described main circuit board and is electrically connected at the LED light source on described modulation of source circuit board.
Preferably, described fluorescence oxygen sensor also comprises that described pressure sensor is arranged in described housing and with described main circuit board and is electrically connected for responding to the pressure sensor of temperature and gaseous tension in described housing.
Preferably, described housing comprises base and lid, and described lid and described base are connected and form the described housing with inner chamber, and described gas diffusion hole is opened on described lid.
Preferably, be provided with holder in described housing, described main circuit board is arranged between described base and holder, described light source component and light activated element are arranged on described holder, be arranged on described main circuit board top by described holder, described photovalve is positioned at substrate one side of described light activated element and is arranged on described main circuit board or on described holder.
Fluorescence oxygen sensor of the present utility model, its light activated element adopts the responsive luminescent material preparation of fluorescence oxygen, the responsive luminescent material of this fluorescence oxygen have high multiple the luminous intensity signal ratio, highly sensitive, light transmission strong and be difficult for the characteristics such as loss, thereby the fluorescence oxygen sensor made is highly sensitive, the range of linearity is wide, good stability, can realize oxygen the real time measure in environment, be applicable to the fields such as commercial production, environmental monitoring and medication chemistry, have simple in structure, be beneficial to the volume miniaturization, easy for installation, response is rapidly and the characteristics such as stable and reliable for performance.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the decomposition texture schematic diagram of the utility model fluorescence oxygen sensor one embodiment;
Fig. 2 is the cut-open view after the combination of the oxygen sensor of fluorescence shown in Fig. 1;
Fig. 3 is the light path principle schematic diagram of the oxygen sensor of fluorescence shown in Fig. 1;
Fig. 4 is the light path principle schematic diagram of another embodiment of the utility model fluorescence oxygen sensor;
Fig. 5 be in the utility model the oxygen-sensitive fluorescent luminescent material at pure nitrogen gas and airborne fluorescence spectrum figure;
Fig. 6 is the utility model fluorescence oxygen sensor gas response performance proving installation figure;
Fig. 7 is the gas response performance curve map of the utility model fluorescence oxygen sensor;
Fig. 8 is by the gas chromatogram of oxygen concentration in the gas chromatograph test gas sample.
Embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
As shown in Figures 1 and 2, the fluorescence oxygen sensor of the utility model one embodiment, comprise the housing 1 with inner chamber and be arranged on main circuit board 2, photovalve 3, light source component 4 and the light activated element 5 in housing 1 inner chamber.Housing 1 is provided with several gas diffusion holes 10 that supplied gas enters inner chamber; Photovalve 3 and light source component 4 are electrically connected with main circuit board 2 respectively, light activated element 5 comprises substrate 51 and is formed on the oxygen-sensitive fluorescent luminescent layer 52 on substrate 51 by the oxygen-sensitive fluorescent luminescent material, this light activated element 5 is arranged on the light path of light source component 4 with oxygen-sensitive fluorescent luminescent layer 52 towards light source component 4, thereby the oxygen-sensitive fluorescent luminescent layer of the phot-luminescence photosensitive elements 5 that light source component 4 sends 52 produces fluorescence, fluorescence sees through substrate and is transmitted into photovalve 3, and photovalve 3 produces corresponding electric signal after receiving fluorescence.
For waterproof ventilated membrane 6 better is fixed on lid 12, can be on lid 12 groove 120 of the region division indent of corresponding gas diffusion hole 10, gas diffusion hole 10 is arranged on groove 120 bottom surfaces, and waterproof ventilated membrane 6 is embedded in groove 120 and gas diffusion hole 10 is covered.The shape of this waterproof ventilated membrane 6 is corresponding with groove 120 shapes, the perisporium that the periphery of chimeric rear waterproof ventilated membrane 6 can adjacent groove 120, thus can realize that waterproof ventilated membrane 6 is fixed on lid 12.
Photovalve 3 is electrically connected with main circuit board 2, and preferably, photovalve 3 is arranged on the side of main circuit board 2 towards lid 12.Photovalve 3 converts received fluorescence intensity to corresponding electric signal, by the TT&C system on main circuit board 2, carries out the data processing, finally by signal output pin 21, sends out the data such as oxygen concentration, temperature.Light source component 4, light activated element 5 and photovalve 3 are as the core of whole sensor, for the oxygen Luminescent Quenching Reactions occurs.Oxygen molecule in environment can be subject to light activated element 5 light source component 4 to excite the fluorescence generation quencher of generation to react, the oxygen concentration difference causes Luminescent Quenching Reactions degree difference, and then the fluorescence intensity difference that captures of photovalve 3, can calculate oxygen density value by fluorescence intensity.This photovalve 3 can be the photodetectors such as photoresistance, silicon photocell or photodiode, as long as the fluorescence that can will be transmitted on it changes electric signal into, and can get final product by main circuit board 2 and 21 outputs of signal output pin.
Corresponding setting between light source component 4, light activated element 5 and photovalve 3, so that the luminous energy that light source component 4 sends is transmitted into light activated element 5, light activated element 5 is stimulated and produces fluorescent emission to photovalve 3.Wherein, light activated element 5 light source component 4 relatively is obliquely installed, and photovalve 3 is relative with light source component 4 vertical and be positioned at substrate 51 1 sides of light activated element 5; The angle tilted is less than 90 °.In the present embodiment, the relative main circuit board 2 of light source component 4 is vertically set on main circuit board 2, and with photovalve 3 intervals; The relative light source component 4 of light activated element 5 is 45 ° and is obliquely installed, and is positioned at photovalve 3 tops, and the setting of this each element is beneficial to reducing of sensor bulk.Shown in figure 3, during work, the light directive light activated element 5 that light source component 4 sends, excited the oxygen-sensitive fluorescent luminescent layer 52 on light activated element 5, oxygen-sensitive fluorescent luminescent layer 52 is stimulated and sends fluorescence, fluorescence can be effectively by the molecular oxygen quencher, thereby fluorescence intensity is along with oxygen concentration increases and reduces, and vice versa; Then fluorescence is transmitted on photovalve 3 through substrate 51, after photovalve 3 receives, according to the fluorescence intensity captured, produces corresponding electric signal, can pass through the signal output pin 21 output data on main circuit board 2.
In other embodiments, but light activated element 5 and light source component 4 opposing parallel settings, but and photovalve 3 also parallel light-sensitive element 5 and light source component 4, as shown in Figure 4; Or, photovalve 3 also relatively light activated element 5 and light source component 4 tilt and be positioned at substrate 51 1 sides of light activated element 5, the angle tilted is less than 90 °, preferably 45 °, as long as can reach the light that light source component 4 sends, be transmitted on light activated element 5, and the fluorescence that light activated element 5 produces can be transmitted on photovalve 3 and gets final product.
In above-mentioned light activated element 5, the oxygen-sensitive fluorescent luminescent material that forms oxygen-sensitive fluorescent luminescent layer 52 comprises that fixing reaching mutually is fixed on the fixedly fluorescence indicator of phase surface.Fluorescence indicator can adopt the methods such as covalent cross-linking method, physically trapping method or sol-gel process to be fixed on fixedly phase surface.Wherein, fluorescence indicator can comprise one or more in metal Ru complex compound, metal platinum complex compound, Metal Palladium complex compound, metal iridium complex compound and transition metal porphyrin complex, this fluorescence indicator preferable alloy ruthenium complex, particularly preferably ruthenium (II) complex compound.Fixing can be mutually that silica gel, ion exchange resin, stupalith, mesoporous material, fritted glass, polystyrene, Polyvinylchloride, dimethyl silicone polymer or other can adsorb or the organic or inorganic superpolymer of bonding fluorescence indicator.Fix and be mutually Powdered or graininess.Should fixing preferred silica gel, particularly preferably particle diameter 70-230 purpose silica gel particle mutually.Adopt the metal Ru complex compound as fluorescence indicator and silica gel as fixing phase, due to metal Ru complex compound positively charged, it can firmly be adsorbed onto Silica Surface by electrostatic interaction, is difficult for disengaging.
The method for preparing fluorescence indicator with the metal Ru complex compound can be as follows: ruthenium trichloride is dissolved in organic solvent, forms the solution of concentration 15-30mg/ml; Add the red luxuriant and rich with fragrance Lip river of DPP(quinoline), it is mixed with the ratio of mol ratio 3-5:1 with ruthenium trichloride; Reflux, cooling, to filter, washing, add the sodium-chloride water solution of the 1M of the chlorophenylboronic acid salt of 1-15mM and 50-100ml, separates out insolubles, filters, and washing, revolve steaming, and recrystallization filters, and ether rinses, and vacuum drying obtains powdery product, is fluorescence indicator.During this oxygen-sensitive fluorescent luminescent materials, first fluorescence indicator is dissolved in organic solvent, puts into fixedly phase, through aging, filtration, removal of impurities, the dry residual solvent of removing, obtain the oxygen-sensitive fluorescent luminescent material.Above-mentioned organic solvent all can be tetrahydrofuran, acetone, chloroform, cyclohexane, ethylene glycol, N, one or more in-N dimethyl formamide (DMF), toluene, methenyl choloride and ethyl acetate, preferred acetone, N ,-N dimethyl formamide and chloroform.
When the oxygen-sensitive fluorescent luminescent material is formed on substrate 51, first by organic solvent (same as above), makes solution, then be formed on substrate 51 by methods such as gluing, spin coating, spraying or vapour deposition processes.Substrate 51 can be optical filter or microslide.The light that light source component 4 sends first excites oxygen-sensitive fluorescent luminescent layer 52, and oxygen-sensitive fluorescent luminescent layer 52 is stimulated and sends fluorescence through substrate 51, and fluorescence can be effectively by the molecular oxygen quencher in environment, and the fluorescent emission after the oxygen quencher is to photovalve 3.The oxygen-sensitive fluorescent luminescent material has the luminous intensity signal ratio of high multiple, and highly sensitive, light transmission is strong, be difficult for running off, and can give the advantages such as sensor high sensitivity, the wide range of linearity, good stability.
This fluorescence oxygen sensor also comprises filter element 7, and filter element 7 is arranged on the light path of light source component 4 and between light source component 4 and light activated element 5, preferably filter element 7 is sticked on LED light source 42 1 sides of light source component 4.The light that light source component 4 sends is transmitted into light activated element 5 again through filter element 7, filter element 7 is mainly other veiling glare eliminations that in the light that light source component 4 is sent, light activated element 5 nothings excited, and effective light is transmitted into to light activated element 5, can improve sensitivity and the accuracy rate of sensor.Filter element 7 is preferably optical filter.
Also be provided with holder 13 in housing 1, can be by light source component 4, light activated element 5 and filter element 7 location and installation in housing 1.Holder 13 is positioned on main circuit board 2 in housing 1, thereby main circuit board 2 is arranged between base 11 and holder 13, light source component 4 and light activated element 5 are arranged on holder 13, be arranged on main circuit board 2 tops by holder 13, photovalve 3 is positioned at substrate 51 1 sides of light activated element 5 and is arranged on main circuit board 2 or on holder 13.In the present embodiment, holder 13 is provided with the groove position 131,132,133 of installing for light source component 4, light activated element 5 and filter element 7 respectively, and 132 belows, groove position of corresponding light activated element 5 also are provided with the groove 134 that runs through holder 13 from these 132 bottoms, groove position, are convenient to the be stimulated fluorescence that produces of light activated element 5 and pass through to and be transmitted into photovalve 3.
Further, this fluorescence oxygen sensor also comprises for responding to the pressure sensor 8 of temperature and gaseous tension in housing.Pressure sensor 8 is arranged in housing 1 and with main circuit board 2 and is electrically connected, this pressure transducer 8 is with integrated high accuracy number circuit, be used under extreme temperature and humidity conditions and use, it can directly produce corresponding data according to the temperature of sensing, pressure, then by signal output pin 21 outgoi8ng datas on main circuit board 2.By the setting of this pressure sensor 8, can realize that this sensor is simultaneously to the detection of environment temperature and atmospheric pressure.
This pressure transducer 8 can be arranged on main circuit board 2, position that should pressure transducer 8 is provided with the through hole 135 of up/down perforation on holder 13, can strengthen gas and circulate on pressure sensor 8, be convenient to the better temperature sensor of pressure sensor 8 and gaseous tension.
Below with a specific embodiment, the making of oxygen-sensitive fluorescent luminescent material is described:
10mlDMF solution is warming up to 120 ℃, add ruthenium trichloride 150mg, after stirring, add DPP600mg, making it take the ratio that mol ratio is 4:1 with ruthenium trichloride mixes, the gained mixed solution is warmed up to 165 ℃ of backflow 45min, be cooled to room temperature, acetone filtration washing repeatedly, finally be made into the 100ml acetone soln, the chlorophenylboronic acid salt 100ml of 10mM is joined in above-mentioned gained acetone soln, then add the 1M sodium-chloride water solution of 100ml, separate out insolubles, after filtration, wash, revolve steaming.By the thick product of gained, at acetone and water, be 80:20(V:V) mixed solution in recrystallization, filter, ether rinses, 40 ℃ of vacuum drying 6 hours, obtain powdery product, is fluorescence indicator.
The fluorescence indicator of above-mentioned synthesized is added in acetone, be made into the fluorescence indicator organic solution of 0.1M, the silica gel that is 100 order left and right by the 15mg particle diameter is placed in the 0.1M fluorescence indicator organic solution of 15ml, through operations such as aging, filtration, removal of impurities, dryings, remove remaining solvent, can obtain the responsive luminescent material of corresponding fluorescence oxygen.
The responsive luminescent material of the fluorescence oxygen that this is made passes into pure nitrogen gas respectively in fluorescence spectrophotometer and air is tested, and as shown in Figure 5, horizontal ordinate is wavelength (nm) to the fluorescence spectrum figure of acquisition, and ordinate is fluorescence intensity (cd(candela)).The curve that in figure, a is the responsive luminescent material of fluorescence oxygen under pure nitrogen gas, the curve that b is the responsive luminescent material of fluorescence oxygen under air, from figure, curve is known, and the responsive luminescent material of fluorescence oxygen fluorescence intensity change under pure nitrogen gas and air is large, has the luminous intensity signal ratio of high multiple.
The gas response performance test of fluorescence oxygen sensor:
As shown in Figure 6, the fluorescence oxygen sensor is placed on the support 105 of air chamber 100, this air chamber 100 is connected respectively welding bottle 101 and High Purity Nitrogen gas cylinder 102, be respectively equipped with gas meter 103 on the connection pipeline of air chamber 100 and welding bottle 101 and High Purity Nitrogen gas cylinder 102 and control oxygen and nitrogen flows, air chamber 100 is provided with detection system control circuit board 108 and offers Demarcate Gas sample tap 107 and exhausr port 106, also is provided with fan 104 in air chamber 100.The signal output pin of fluorescence oxygen sensor and Power supply pin are connected with detection system control circuit board 108, but detection system control circuit board 108 external power supplies provide the operation required voltage by Power supply pin two 2 for the fluorescence oxygen sensor, the signal of fluorescence oxygen sensor sends to detection system control circuit board 108 by signal output pin 21, then sends to detection system by the signal output part of detection system control circuit board 108.
During test, at first only open the valve of High Purity Nitrogen gas cylinder 102, by gas meter 103, control nitrogen flows, the advertising of (10min left and right) (realizing by fan 104) through after a while, be full of nitrogen in air chamber 100, record the parameters value of fluorescence oxygen sensor; Open the valve of welding bottle 101, in air chamber 100, be filled with oxygen, make the mixed gas that contains certain oxygen in air chamber 100, record now fluorescence oxygen sensor parameters value.The results are shown in Figure shown in 7, as can be seen from Figure, while in air chamber 100, only having nitrogen, the oxygen concentration that the fluorescence oxygen sensor detects is about 0, when being filled with oxygen, oxygen concentration increases along with the increase that is filled with amount of oxygen, is filled with after a certain amount of oxygen to stop oxygen and be filled with, the oxygen density value detected is in steady state (SS), as shown in FIG. be 20.5%.
Contrast: sampled by 107 pairs of interior mixed gass of air chamber 100 of Demarcate Gas sample tap, adopt gas chromatograph to test gaseous sample, the gaseous sample gas chromatogram of acquisition as shown in Figure 8, wherein, horizontal ordinate is retention time, and ordinate is magnitude of voltage, and c is that calibrating gas is (containing H
2, O
2And N
2Three kinds of gases) curve, the curve that d is gaseous sample; Calculate gained by gas chromatograph, the chromatographic peak area that in calibrating gas spectrogram c, oxygen is corresponding is 261755, in the interior gaseous sample spectrogram of air chamber 100 d, chromatographic peak area corresponding to oxygen is 2700142, known calibrating gas is commercial gained, wherein oxygen concentration is 20.07%, the concentration that can obtain oxygen in the interior mixed gas of discharge chamber 100 by ratio calculation is 20.7%, known in Fig. 7, the measured oxygen concentration of fluorescence lambda sensor of the present utility model is 20.5%, the two differs minimum, thereby has shown that this fluorescence oxygen sensor Detection accuracy is high.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model instructions and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present utility model.
Claims (9)
1. a fluorescence oxygen sensor, is characterized in that, comprises the housing (1) with inner chamber and be arranged on main circuit board (2), photovalve (3), light source component (4) and the light activated element (5) in described housing (1) inner chamber; Described housing (1) is provided with several gas diffusion holes (10) that supplied gas enters described inner chamber; Described photovalve (3) and light source component (4) are electrically connected with described main circuit board (2) respectively;
Described light activated element (5) comprises substrate (51) and is formed on the oxygen-sensitive fluorescent luminescent layer (52) on described substrate (51) by the oxygen-sensitive fluorescent luminescent material; Described light activated element (5) is arranged on the light path of described light source component (4) towards described light source component (4) with described oxygen-sensitive fluorescent luminescent layer (52), the oxygen-sensitive fluorescent luminescent layer (52) of the described light activated element of optical excitation (5) that described light source component (4) sends produces fluorescence, fluorescence sees through described substrate (51) and is transmitted into described photovalve (3), and described photovalve (3) produces corresponding electric signal after receiving fluorescence.
2. fluorescence oxygen sensor according to claim 1, it is characterized in that, described fluorescence oxygen sensor also comprises filter element (7), described filter element (7) is arranged on the light path of described light source component (4) and is positioned between described light source component (4) and light activated element (5), and the light that described light source component (4) sends is transmitted into described light activated element (5) after described filter element (7) filters again.
3. fluorescence oxygen sensor according to claim 1, it is characterized in that, described light activated element (5) and described light source component (4) opposing parallel, the parallel described light activated element of described photovalve (3) (5) and light source component (4) or relative described light activated element (5) and light source component (4) tilt and are positioned at substrate (51) one sides of described light activated element (5), and the angle of described inclination is less than 90 °; Or,
The relatively described light source component of described light activated element (5) (4) is obliquely installed, and the angle of described inclination is less than 90 °; Described photovalve (3) is relative with described light source component (4) vertical and be positioned at substrate (51) one sides of described light activated element (5).
4. fluorescence oxygen sensor according to claim 1, it is characterized in that, described main circuit board (2) is provided with signal output pin (21) and Power supply pin (22), and described signal output pin (21) and Power supply pin (22) stretch out respectively described housing (1).
5. fluorescence oxygen sensor according to claim 1, is characterized in that, described housing (1) is provided with waterproof ventilated membrane (6), and described waterproof ventilated membrane (6) covers on described gas diffusion hole (10).
6. fluorescence oxygen sensor according to claim 1, it is characterized in that, described light source component (4) comprises the modulation of source circuit board (41) be electrically connected with described main circuit board (2) and is electrically connected at the LED light source (42) on described modulation of source circuit board (41).
7. fluorescence oxygen sensor according to claim 1, it is characterized in that, described fluorescence oxygen sensor also comprises for responding to the pressure sensor (8) of the interior temperature of described housing (1) and gaseous tension, and described pressure sensor (8) is arranged in described housing (1) and is electrically connected with described main circuit board (2).
8. according to the described fluorescence oxygen sensor of claim 1-7 any one, it is characterized in that, described housing (1) comprises base (11) and lid (12), described lid (12) is connected and forms the described housing (1) with inner chamber with described base (11), and described gas diffusion hole (10) is opened on described lid (12).
9. fluorescence oxygen sensor according to claim 8, it is characterized in that, be provided with holder (13) in described housing (1), described main circuit board (2) is arranged between described base (11) and holder (13), described light source component (4) and light activated element (5) are arranged on described holder (13), be arranged on described main circuit board (2) top by described holder (13), described photovalve (3) is positioned at substrate (51) one sides of described light activated element (5) and is arranged on described main circuit board (2) or on described holder (13).
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| CN2013203087703U CN203324188U (en) | 2013-05-31 | 2013-05-31 | Fluorescent oxygen sensor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278489A (en) * | 2013-05-31 | 2013-09-04 | 深圳市深安旭传感技术有限公司 | Fluorescent oxygen sensor |
| CN106092992A (en) * | 2016-07-13 | 2016-11-09 | 苏州普兰塔环境科技有限公司 | A kind of oxygen in soil Two dimensional Distribution measurement apparatus |
| CN109557058A (en) * | 2017-09-26 | 2019-04-02 | 北京华泰诺安探测技术有限公司 | A kind of method and apparatus for detecting the whether aqueous molecule of under test gas |
| CN110389122A (en) * | 2019-09-03 | 2019-10-29 | 中国工程物理研究院流体物理研究所 | A kind of fluorescence enhancement type all-fiber hydrogen sensor based on Meta Materials |
| EP3096917B1 (en) * | 2014-01-21 | 2020-02-26 | Illinois Tool Works Inc. | Device for measuring and collecting oxygen concentration data in welding processes |
-
2013
- 2013-05-31 CN CN2013203087703U patent/CN203324188U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278489A (en) * | 2013-05-31 | 2013-09-04 | 深圳市深安旭传感技术有限公司 | Fluorescent oxygen sensor |
| CN103278489B (en) * | 2013-05-31 | 2015-06-17 | 深圳市深安旭传感技术有限公司 | Fluorescent oxygen sensor |
| EP3096917B1 (en) * | 2014-01-21 | 2020-02-26 | Illinois Tool Works Inc. | Device for measuring and collecting oxygen concentration data in welding processes |
| CN106092992A (en) * | 2016-07-13 | 2016-11-09 | 苏州普兰塔环境科技有限公司 | A kind of oxygen in soil Two dimensional Distribution measurement apparatus |
| CN106092992B (en) * | 2016-07-13 | 2019-04-19 | 王亮 | A kind of oxygen in soil Two dimensional Distribution measuring device |
| CN109557058A (en) * | 2017-09-26 | 2019-04-02 | 北京华泰诺安探测技术有限公司 | A kind of method and apparatus for detecting the whether aqueous molecule of under test gas |
| CN110389122A (en) * | 2019-09-03 | 2019-10-29 | 中国工程物理研究院流体物理研究所 | A kind of fluorescence enhancement type all-fiber hydrogen sensor based on Meta Materials |
| CN110389122B (en) * | 2019-09-03 | 2022-05-20 | 中国工程物理研究院流体物理研究所 | Fluorescence enhancement type all-fiber hydrogen sensor based on metamaterial |
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