CN206740651U - A kind of laminated construction fluorescent optical sensor - Google Patents
A kind of laminated construction fluorescent optical sensor Download PDFInfo
- Publication number
- CN206740651U CN206740651U CN201720345838.3U CN201720345838U CN206740651U CN 206740651 U CN206740651 U CN 206740651U CN 201720345838 U CN201720345838 U CN 201720345838U CN 206740651 U CN206740651 U CN 206740651U
- Authority
- CN
- China
- Prior art keywords
- optical sensor
- pass filter
- laminated construction
- shell
- wave pass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
It the utility model is related to a kind of laminated construction fluorescent optical sensor, including the sensor outer housing that can be sealed and the optical sensor system being inlaid in sensor outer housing, optical sensor system is including the light source of coaxial setting, short wave pass filter, air chamber, sensing unit, long wave pass filter group and optical signal collector unit, optical signal collector unit are connected with signal processing system successively from top to bottom；Air inlet and bleeding point are further opened with sensor outer housing, air inlet is connected by inlet channel with air chamber, and air chamber is connected by bleed-off passage with bleeding point.The utility model small volume, it is easy to array to realize while detect two or more measured object, signal to noise ratio is high, quick detection can be used for and include but is not limited to micro- trace chemicals such as explosive, drugs, Detection results are good, when being detected to non-measured matter with measured matter signal response can discrimination it is obvious, detection stablize it is accurate.
Description
Technical field
The utility model belongs to fluorescence sense technical field, and in particular to a kind of laminated construction fluorescent optical sensor.
Background technology
Fluorescence sense refer to using a wavelength range light irradiation certain there is the sensing unit of specific identification function, swash
Hair produces fluorescence, and when corresponding tested substance contacts with sensing unit, and interacts, the fluorescence for sending it is strong
Degree enhancing or quenching, fluorescence lifetime extend or reduced, it is possible thereby to be realized by the change for monitoring fluorescence signal to detected material
Matter is measured either qualitatively or quantitatively.This technology is typically used to biological and chemical sensing.What current sensors with auxiliary electrode on the market had
In order to obtain high light intensity signal to noise ratio to improve measurement sensitivity, allowed in structure excitation light path and signal light path be mutually perpendicular to or
It is at an angle, the distance between sensing element and optical signal gathering element are undesirably increased, so as to need to introduce
Lens group improves collection efficiency so that whole sensor bulk increase.In addition, to the angle of the optical elements such as lens in structure
Degree, location layout etc. also have rigors, significantly limit the integrated and array of sensor., can also be with practice
Optical fiber builds fluorescent optical sensor as the communication media of exciting light and flashlight, but cross section of optic fibre product general only hundreds of is micro-
Rice, it is limited to the capture range of optical signal, therefore have to by lens, or even multigroup optical filter improves signal to noise ratio, so that
Sensor complicated integral structure.Here it is why performance good fiber fluorescence sensor price general charged all costly
Reason.Therefore, it is necessary to research and develop structure set stabilization, signal to noise ratio height, small volume, be easy to fluorescence biography of the advantages that array for the whole body
Sensor.
The content of the invention
The purpose of this utility model is to overcome problems of the prior art, there is provided a kind of laminated construction fluorescence sense
Device, light intensity signal to noise ratio is high, is easy to array, so as to realize while detect two or more measured object.
In order to achieve the above object, the utility model adopts the following technical scheme that：
Including the sensor outer housing that can be sealed and the optical sensor system being inlaid in sensor outer housing, optical sensing system
System include from top to bottom successively the light source of coaxial setting, short wave pass filter, air chamber, sensing unit, long wave pass filter group and
Optical signal collector unit, optical signal collector unit are connected with signal processing system；Be further opened with sensor outer housing air inlet and
Bleeding point, air inlet are connected by inlet channel with air chamber, and air chamber is connected by bleed-off passage with bleeding point.
Further, light source is straw hat type LED, bullet cut LED or patch-type LED；The angle of divergence of light source is 7 °
~30 °.
Further, sensor outer housing includes the upper strata shell and lower floor's shell of inserted type, upper strata shell and lower floor's shell
On be further opened with the screwed hole that can connect, mounting screw in screwed hole；Light source is fixedly mounted on light source fixing frame, and light source is solid
Determine frame and short wave pass filter to be inlaid in the shell of upper strata；Sensing unit, long wave pass filter group and optical signal collector unit
It is inlaid in lower floor's shell, signal processing system is connected with the sealed bottom of lower floor's shell.
Further, optical signal collector unit uses the photodiode of PIN-type.
Further, it is 4~6 that the transmitance of short wave pass filter, which is more than 30%, OD values,.
Further, long wave pass filter group includes combination or the dislocation arrowband of narrow band pass filter and long wave pass filter
Optical filter coordinates combination；The thickness of long wave pass filter group is in the range of 2~5mm.
Further, there is 10 °~50 ° of folder between the outlet of inlet channel and the entrance of bleed-off passage and sensing unit
Angle, or the outlet of inlet channel and the entrance of bleed-off passage are located at 0.2~1mm directly over sensing unit edge tangent line direction
Place.
Further, optical sensor system is several, and when optical sensor system is more than one, optical sensor system
It is inlaid in side by side in sensor outer housing；Air inlet and bleeding point are located at the both sides of air chamber respectively.
Further, bleeding point connection micro vacuum aspiration pump；It is provided between short wave pass filter and air chamber transparent
Optics window.
Further, sensing unit uses fluorescence sense film；Diameter 10mm fluorescence sense film is correspondingly arranged volume
For 50~500mm3Air chamber.
Compared with prior art, the utility model has technique effect beneficial below：
The optical element that the utility model laminated construction fluorescent optical sensor is related to only has light source, optical filter and optical signal and collected
Unit etc., it is total to by excitation source, short wave pass filter, sensing unit, long wave pass filter group, and optical signal collector unit
Axle is set, and forms the laminated construction of simple and stable, under the premise of its light intensity signal to noise ratio, the speed of response and selectivity is ensured, long,
Wide, Gao Junke within 2cm, realize while detect two or more measured object by small volume, the array that is easy to；It is simultaneously same
Axle sets and shortens the distance between light source and sensing unit, single so as to reduce sensing beneficial to the scope of control hot spot diffusion
The required exciting light light intensity of member；Almost only have the interval of long wave pass filter group between optical signal collector unit and sensing unit,
It ensure that the collection efficiency of fluorescence；The use of long wave pass filter group leads to arrowband fluorescent optical filter compared to conventional use of long wave
Filtering capabilities be higher by 1~2 order of magnitude, not only reduce the cost of manufacture of optical filter, also cause sensing unit send it is glimmering
Light is only that several one thousandths of LED exciting lights are even more small, and also a variety of veiling glares such as the infrared tail of light source, frequency multiplication peak
In the case of influence, obtain can even more high same with conventional structure sensor light intensity signal to noise ratio；Sensor outer housing can seal,
Ensure airtight environment, the optical condition needed for sensing detection.The utility model signal to noise ratio is high, and can be used for quick detection is included but not
It is limited to micro- trace chemicals such as explosive, drugs, Detection results are good, can to non-measured object and signal response during tested analyte detection
Discrimination is obvious, and it is accurate that detection is stablized.
Further, the utility model is by controlling the profile and the angle of divergence of light source, while coaxial with each optical element sets
Put and be engaged, being advantageous to raising light intensity signal to noise ratio and launching efficiency, the light intensity that the utility model is radiated on sensing unit only needs 5
~30 μ W, compared to light source compared with more than the 100 μ W needed for the angled conventional sensors of detection unit, greatly subtract
Photobleaching and light injury of the exciting light to sensing unit are lacked.
Further, the utility model is easily installed each element by setting upper strata shell and lower floor's shell；And setting-in
Mode, that is, sensor outer housing and optical sensor system component size agree with and the structure design in stepped profile, make
Whole stack fluorescent chemical sensor just reaches the airtight environment needed for sensing, optics in the case where not using rubber washer
Condition, its anti-vibration, good impact resistance.
Further, the utility model ensures light source to sensing by controlling the transmitance and OD values of short wave pass filter
The cut-off of the fluorescent emission bands of unit.
Further, the utility model is by setting long wave pass filter group, with the wave spread of excitation source and
The fluorescent emission commensurate in scope of sense film, improve the light intensity signal to noise ratio, cost-effective of sensor；Also make long wave pass filter group
Thickness control in 2~5mm, reduce volume.
Further, there is angle between the outlet of the utility model inlet channel and the entrance of bleed-off passage and sensing unit
Or certain distance, to prevent the impact injury sensing unit of air-flow, while adjacent obstruction air-flow is avoided in the stream on sensing unit surface
It is dynamic.
Further, the utility model is realized highly integrated by setting polymorphic air inlet and bleeding point
Array stack sensor, it is non-interfering either simultaneously or alternately detect multiple types material.
Further, the utility model prevents tested pollution of the gas to short wave pass filter by setting optics window.
Further, the utility model does not influence tested gas by controlling chamber volume corresponding to fluorescence sense film
The sensitivity of the size and sensor of mobility, gas passage on fluorescence sense film surface in itself.
Brief description of the drawings
Fig. 1 is the structural representation of laminated construction fluorescent optical sensor.
Fig. 2 is the structural representation of two integrated laminated construction fluorescent optical sensors.
Fig. 3 (a) is the air flue top view of two integrated laminated construction fluorescent optical sensors；Fig. 3 (b) is that two integrated laminated construction are glimmering
The air flue right view of optical sensor.
Fig. 4 is the test result figure that several frequently seen drugs are detected using the stack fluorescent sensor of embodiment 1, and (a) figure is
The light intensity signal to noise ratio of stack fluorescent sensor, (b) figure are to gather once material to be detected every 30 seconds.
Fig. 5 is using the integrated stack fluorescent sensor of 2 liang of embodiment while detects the result figure of several drugs and explosive.
Wherein：1- upper stratas shell；101- lower floors shell；The air inlets of 2- first；The air inlets of 201- second；3- bleeding points；4-
Screwed hole；5- micro vacuum aspiration pumps；6- light source fixing frames；7- light sources；8- short wave pass filters；9- optics windows；10- gas
Room；11- fluorescence sense films；12- long wave pass filter groups；13- photodiodes；14- signal processing systems.
Embodiment
The utility model is described in further details below in conjunction with the accompanying drawings, but the utility model is not limited only to following implementations
Situation.It is horizontally disposed with the utility model with fluorescence sense film in Fig. 1, the first air inlet is located at right side and defines related side
To only for more clearly describing, rather than being actually located at upper strata shell to restriction of the present utility model, such as air inlet
Any one face on；According under test gas situation, the utility model sensor can overturn or be inverted use, that is to say, that use
When fluorescence sense film be not necessarily in horizontality.
Relevant technical terms and other explanations in the utility model laminated construction fluorescent optical sensor：The utility model lamination knot
Structure refers to excitation source, short wave pass filter, sensing unit, long wave pass filter group, and optical signal collector unit etc. is coaxial
A kind of special construction.
Light intensity signal to noise ratio refer to stack fluorescent sensor have sense film with without sense film working condition under light intensity phase
To the ratio of value；The speed of response refers to response time of the sensor to detected material；Selectivity refers to that lamination sensor detects quilt
When surveying thing and non-measured object can discrimination.
Referring to Fig. 1 and Fig. 2, the utility model includes the sensor outer housing that can be sealed and is arranged in sensor outer housing
Optical sensor system, optical sensor system can be one or more, and when optical sensor system is more than one, optical sensing
System is inlaid in sensor outer housing side by side.Sensor outer housing includes upper strata shell 1 and lower floor's shell 101, and upper strata shell 1 is with
Open up the screwed hole 4 that can be connected on layer shell 101, mounting screw in screwed hole 4, upper strata shell 1 and lower floor's shell 101 it
Between be additionally provided with embedded occlusion structure, by embedded occlusion structure and screw by upper strata shell 1 and the stationary phase of lower floor's shell 101
Even.Optical sensor system is embedded in inside sensor outer housing, and embed occlusion structure by the sensor outer housing of precision connects with screw thread
Connect to form airtight environment, optical condition needed for sensing detection.
The light source 7 of optical sensor system including coaxial setting successively from top to bottom, short wave pass filter 8, optics window 9,
Air chamber 10, fluorescence sense film 11, long wave pass filter group 12, photodiode 13 and signal processing system 14, the pole of photoelectricity two
Pipe 13 is connected with signal processing system 14；Be further opened with air flue, air inlet and bleeding point 3 on sensor outer housing, air flue include into
Gas passage and bleed-off passage；Air flue on sensor outer housing is designed as one with air chamber 10 and is seamlessly connected entirety, reduces and is detected
Loss during material steam to fluorescence sense film 11.Air flue ranks the both sides of air chamber 10 and is connected with air chamber 10：On one side
Inlet channel be connected with air inlet, inlet port is designed as funnel-form；Another side bleed-off passage is connected with bleeding point 3,
Bleeding point 3 connects with a micro vacuum aspiration pump 5.
Sensor outer housing is divided into upper and lower two layers：Upper strata shell 1 is used to install light source 7 and short wave pass filter 8, and is used for
The layout of air chamber 10 and gas passage is formed, light source 7 is fixedly mounted in upper strata shell 1 by light source fixing frame 6；Lower floor's shell
101 installation fluorescence sense films 11, long wave pass filter group 12 and photodiode 13, outside signal processing system 14 and lower floor
The sealed bottom of shell 101 is connected；It is separately provided for installing the step of each part in upper strata shell 1 and lower floor's shell 101
Hole, each part can be inlaid in upper strata shell 1 and lower floor's shell 101.
With fluorescence sense film 11 similar in inlet channel and bleed-off passage with sensing membrane substrate in 10 °~50 ° or so
Angle or at 0.2~1mm of surface of sensing membrane basal edge tangential direction, gas passage and fluorescence sense film 11
Impact injury film of the face to prevent air-flow is unable to, can not the adjacent flowing for hindering air-flow in film surface；With external environment
Air inlet, the bleeding point 3 to connect can be designed on any one face of upper strata shell 1 as needed, as long as ensureing gas passage energy
Under test gas is enough allowed to pass through air chamber.
Such as optical sensor system be one when, air inlet can be arranged on two positions, wherein the first air inlet 2
It is opened in the side wall of upper strata shell 1, the second air inlet 201 is opened in the top of upper strata shell 1, and bleeding point 3 is opened in upper strata
The top of shell 1, and air inlet and bleeding point 3 are located at the left and right sides of air chamber 10 respectively；Referring to Fig. 3 (a) and Fig. 3 (b), optics
When sensor-based system is two, air inlet is opened on front side of the top of upper strata shell 1, and bleeding point 3 is opened in the bottom of upper strata shell 1
Rear side, and air inlet and bleeding point 3 are respectively positioned between two optical sensor systems.
Excitation source of the light source 7 as fluorescence sense film 11, using LED lamp bead, straw hat type LED can be used by having
Lamp, bullet cut LED or patch-type LED；Its main emission wavelength range is tried one's best and the optimum excitation wave of fluorescence sense film 11
Section matching, the angle of divergence of light source 7 is 7 °~30 °.
The distance of short wave pass filter 8 and light source 7 is defined within 3mm by the effect for not losing short wave pass filter 8,
Short wave pass filter 8 is more than 30% for the transmitance of exciting light, the cut-off to the fluorescent emission bands of fluorescence sense film 11
Depth will greatly, and it is 4~6 typically to require OD values.
Optics window 9 selects light transmission medium, prevents tested pollution of the gas to short wave pass filter 8.
The size of air chamber 10 of sensor is led to not influenceing tested gas in the mobility on the surface of fluorescence sense film 11, gas
The sensitivity of the size and sensor in road in itself is defined, the size of air chamber 10 about 50 corresponding to diameter 10mm fluorescence sense film 11
~500 mm3。
11 available optical substrate of fluorescence sense film has a lot, and main principle is to sensing membrane and fluoroscopic examination wave band
It is noiseless, the optical medium of fluorescence, such as sheet glass can be conducted, finish and flatness no requirement (NR) to optical substrate, will be passed
Sense material, which is applied or is chemically bound in optical substrate, is made diaphragm, and fast and easy is changed.
The effect of long wave pass filter group 12 is that to filter exciting light and frequency doubled light, infrared tail on sense film etc. miscellaneous
Astigmatism, usual exciting light 3~10 orders of magnitude bigger than the light intensity value of fluorescence are even more big, carried by the optical filter of single type
High light intensity signal to noise ratio, often OD values need to reach 6~8, but the increase of OD values can cause the reduction of fluorescence bands transmitance, can also
Increase the thickness and cost of manufacture of optical filter；Long wave pass filter group 12 is according to specific excitation source in the utility model
Wave spread and the fluorescent emission scope of sense film carry out selecting design, including narrow band pass filter and the logical optical filtering of long wave
Combination of piece or dislocation narrow band pass filter coordinate combination etc. to improve the light intensity signal to noise ratio of sensor, cost-effective；Also make length
The thickness control of ripple pass filter group 12 is in 2~5mm.
The LED of arrowband has a main luminescence band, but some veiling glares near main luminescence band also be present, and one
As merely with short wave pass filter do not reach filter effect, therefore need long wave pass filter group auxiliary to filter.For Stokes
The big sensing unit of displacement just can reach filter effect from a narrow band pass filter and a long wave pass filter combination, such as
Exciting light can be in 600nm-800nm wave bands, the long wave pass filter group of selection in 430 nm-500nm, fluorescent emission
650nm narrow band pass filter and the long wave pass filter of 350nm-600nm cut-offs, require that narrow band pass filter leans on according to experimental verification
Nearly sensing unit；For Stokes shift, small and exciting light is in ultraviolet band, as between 300nm-400nm, fluorescent emission
Sensing unit of the wave band between 380nm -470nm is then suggested using dislocation narrow band pass filter, wherein dislocation narrow band pass filter group
Conjunction can be the 410nm narrow band pass filters with a width of 20nm and bandwidth 10nm 415nm narrow band pass filters, be wanted according to experimental verification
The short narrow band pass filter of wavelength is sought close to sensing unit.
There is 0.2~0.6mm gap to be used to fix optical filter between long wave pass filter group 12 and fluorescence sense film, it is long
Distance is 0~1mm between ripple pass filter group 12 and photoelectric diode 13.
Photodiode 13 uses PIN-type photodiode.
For the utility model under the premise of its light intensity signal to noise ratio, the speed of response and selectivity is ensured, length can be in 2cm
Within, the optical element being related to only has light source 7, optical filter, light-sensitive device, makes its simple in construction, install convenient, can also extend
Into the array type sensor for detecting multiclass material simultaneously.
Gas to be detected enters from the air inlet of inlet channel, through air chamber 10 after from the row of bleeding point 3 of bleed-off passage
Go out.The light that light source 7 is sent is radiated on fluorescence sense film 11 by short wave pass filter 8 and excites generation fluorescence, by long wave
Pass filter group 12 is received after filtering exciting light and veiling glare by the photodiode 13 of PIN-type.
The aperture of installation optical mirror slip keeps one with size of the thickness with optical mirror slip in itself inside sensor outer housing
Cause, its scope of activities is limited by the regulation and control of size between optical sensor system element, it is ensured that the anti-vibration of optical element, impact
Dark conditions needed for power and fluorescence sense etc..
Embodiment 1
Single stack fluorescent sensor, as shown in figure 1, upper strata shell 1, lower floor's shell 101 including sensor outer housing
And the optical sensor system in housing.The optical element of optical sensor system is pacified into embedded sensor outer housing in particular order
Inside, then fix upper strata shell 1 and lower floor's shell 101 using screwed hole 4 and screw, and be connected to lower floor's shell
Signal processing system 14 on 101, the entirety of this few part composition stack fluorescent sensor.The light that light source 7 is sent passes through shortwave
It is radiated at after the optical filtering diffusion of pass filter 8 and air chamber 10 on fluorescence sense film 11 and excites generation fluorescence, then is led to by long wave
Filter set 12 makes fluorescence be received by the photodiode 13 of PIN-type after filtering, and photodiode 13 carries out photosignal and turned
Change, and electric signal is sent to signal processing system 14, signal processing system 14 monitors sent on fluorescence sense film 11 in real time
Fluorescence intensity change.When tested substance steam via the first air inlet 2 or the second air inlet 201 reach air chamber 10 with
Reversible interaction occurs for fluorescence sense film 11, makes fluorescence intensity enhancing or weaken that fluorescence sense film 11 is sent, passes through
The size of fluorescence intensity change judges the result of detection.
As shown in figure 4, several frequently seen drugs are detected using stack fluorescent sensor.Wherein (a) figure is that stack fluorescent passes
The light intensity signal to noise ratio of sensor；Using scribble 10 μ L concentration be 0.05% fluorescence sense film a diameter of 15mm sheet glass
On, you can make the signal to noise ratio of lamination drug sensor up to more than 30；(b) figure is to gather once material to be detected every 30 seconds, is adopted
Collect time control at 1~5 second, the response time of sensor is almost synchronous with the sampling time, and lamination sensor is also provide a comparison in figure
Detect non-measured object and signal response during measured object can discrimination, signal distinguishing is obvious and stable accurate.
The light intensity that laminated construction fluorescent optical sensor is radiated on fluorescence sense film is only 5~30 μ W, compared to light source with
More than 100 μ W needed for the angled conventional sensors of detection unit, which are compared, (uses Thorlabs companies model
PM100D power meter, it is placed in what sense film surface test obtained), exciting light is greatly reducing to fluorescence sense film
Photobleaching, light injury.
Embodiment 2
It is frequently necessary to detect two or more measured object simultaneously in actual applications, such as explosive and drugs
Class.It is two integrated stack fluorescent sensors as shown in Fig. 2, including the upper strata shell 1 of two integrated lamination sensor outer housings, lower floor
Shell 101 and two sets of optical sensor systems.According to inhomogeneous measured matter, from corresponding detection fluorescence sense film 11
And corresponding optical element, then each optical element of optical sensor system is pacified outside embedded sensor in particular order
The inside of shell, then fix upper strata shell 1 and lower floor's shell 101, and lower floor's shell 101 and letter using screwed hole 4 and screw
Number processing system 14, the entirety of this several two integrated stack fluorescent sensor of parts composition.The light that light source 7 is sent is filtered by short-pass
It is radiated at after the optical filtering diffusion of mating plate 8 and air chamber 10 on fluorescence sense film 11 and excites generation fluorescence, then is filtered by long wave is logical
Piece group 12 is received after filtering exciting light and other veiling glares by the photodiode 13 of PIN-type, reacts in signal processing system
On 14, the change in fluorescence sent on fluorescence sense film 11 is monitored in real time.When the steam of tested substance is via the first air inlet 2
It is divided into two strands of air chambers 10 for entering both sides, when reversible interaction occurs simultaneously with the fluorescence sense film 11 on both sides respectively, makes
The fluorescence intensity enhancing or weaken that fluorescence sense film 11 is sent, judge the result of detection by the size of fluorescence intensity change.
Fig. 5 is to detect two kinds of explosives and two kinds of drugs test result figures with two integrated stack fluorescent sensors.This practicality
New embodiment 2 is the preliminary expansion to embodiment 1, though there is respective optical sensor system, shares an air inlet with taking out
Gas port, detection or the mutual mirror rice steamer ability confirmed detection, add sensor while two kinds of measured matters can be realized.
Expansion direction of the present utility model can be that each sensor-based system is simply existed side by side in a word, i.e., respective optical sensing
System and air chamber, but share same air inlet, bleeding point；Can also share same air chamber, excitation source, the pole of photoelectricity two
The integration of the realization height such as pipe；Can also partly exist side by side as needed, thin consolidation, finally realize that highly integrated array is folded
Layer sensor, the non-interfering material for either simultaneously or alternately detecting multiple types.
Finally, it is described above to show only the utility model certain embodiments, every design put forward with reference to the utility model
Structure and the optical sensor system variation and expansion made, be the content that the utility model is related to.
Claims (10)
- A kind of 1. laminated construction fluorescent optical sensor, it is characterised in that：Including the sensor outer housing that can be sealed and it is inlaid in sensing Optical sensor system in device shell, optical sensor system include the light source (7) of coaxial setting successively from top to bottom, short-pass filter Mating plate (8), air chamber (10), sensing unit, long wave pass filter group (12) and optical signal collector unit, optical signal collector unit and Signal processing system (14) is connected；Air inlet and bleeding point (3) are further opened with sensor outer housing, air inlet passes through inlet channel It is connected with air chamber (10), air chamber (10) is connected by bleed-off passage with bleeding point (3).
- A kind of 2. laminated construction fluorescent optical sensor according to claim 1, it is characterised in that：Light source (7) is straw hat type LED Lamp, bullet cut LED or patch-type LED；The angle of divergence of light source (7) is 7 °~30 °.
- A kind of 3. laminated construction fluorescent optical sensor according to claim 2, it is characterised in that：Sensor outer housing includes chimeric The upper strata shell (1) and lower floor's shell (101) of formula, upper strata shell (1) be further opened with what can be connected on lower floor's shell (101) Screwed hole (4), screwed hole (4) interior mounting screw；Light source (7) is fixedly mounted on light source fixing frame (6), light source fixing frame (6) It is inlaid in upper strata shell (1) with short wave pass filter (8)；Sensing unit, long wave pass filter group (12) and optical signal are received Collection unit is inlaid in lower floor's shell (101), and signal processing system (14) is connected with the sealed bottom of lower floor's shell (101).
- A kind of 4. laminated construction fluorescent optical sensor according to claim 1, it is characterised in that：Optical signal collector unit uses The photodiode (13) of PIN-type.
- A kind of 5. laminated construction fluorescent optical sensor according to claim 1, it is characterised in that：Short wave pass filter (8) It is 4~6 that transmitance, which is more than 30%, OD values,.
- A kind of 6. laminated construction fluorescent optical sensor according to claim 1, it is characterised in that：Long wave pass filter group (12) Coordinate including combination of the narrow band pass filter with long wave pass filter or dislocation narrow band pass filter and combine；Long wave pass filter group (12) thickness is in the range of 2~5mm.
- A kind of 7. laminated construction fluorescent optical sensor according to claim 1, it is characterised in that：The outlet of inlet channel and take out There are 10 °~50 ° of angle, or the outlet of inlet channel and entering for bleed-off passage between the entrance and sensing unit of gas passage Mouth is at 0.2~1mm directly over sensing unit edge tangent line direction.
- A kind of 8. laminated construction fluorescent optical sensor according to claim 1, it is characterised in that：Optical sensor system is some It is individual, and when optical sensor system is more than one, optical sensor system is inlaid in sensor outer housing side by side；Air inlet and pumping Mouth (3) is located at the both sides of air chamber (10) respectively.
- A kind of 9. laminated construction fluorescent optical sensor according to claim 1, it is characterised in that：Bleeding point (3) connection is miniature Vacuum air pump (5)；Transparent optics window (9) is provided between short wave pass filter (8) and air chamber (10).
- A kind of 10. laminated construction fluorescent optical sensor according to claim 1, it is characterised in that：Sensing unit uses fluorescence Sense film (11)；It is 50~500mm that diameter 10mm fluorescence sense film (11), which is correspondingly arranged volume,3Air chamber (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720345838.3U CN206740651U (en) | 2017-04-01 | 2017-04-01 | A kind of laminated construction fluorescent optical sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720345838.3U CN206740651U (en) | 2017-04-01 | 2017-04-01 | A kind of laminated construction fluorescent optical sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206740651U true CN206740651U (en) | 2017-12-12 |
Family
ID=60558435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720345838.3U Active CN206740651U (en) | 2017-04-01 | 2017-04-01 | A kind of laminated construction fluorescent optical sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206740651U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037019A (en) * | 2017-04-01 | 2017-08-11 | 陕西师范大学 | Laminated construction fluorescent optical sensor |
| CN110132926A (en) * | 2019-06-06 | 2019-08-16 | 深圳砺剑防卫技术有限公司 | Multichannel fluorescent quenching sensing device |
-
2017
- 2017-04-01 CN CN201720345838.3U patent/CN206740651U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037019A (en) * | 2017-04-01 | 2017-08-11 | 陕西师范大学 | Laminated construction fluorescent optical sensor |
| CN107037019B (en) * | 2017-04-01 | 2024-01-23 | 陕西师范大学 | Lamination structure fluorescence light sensor |
| CN110132926A (en) * | 2019-06-06 | 2019-08-16 | 深圳砺剑防卫技术有限公司 | Multichannel fluorescent quenching sensing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107037019A (en) | Laminated construction fluorescent optical sensor | |
| JP6181707B2 (en) | Integrated photoelectrochemical sensor for nitric oxide in gaseous samples | |
| US7440101B2 (en) | System and method for multiple laser triggering | |
| CN206740651U (en) | A kind of laminated construction fluorescent optical sensor | |
| US9612200B2 (en) | Particle detector | |
| Xiao et al. | CE detector based on light‐emitting diodes | |
| CN102869980A (en) | Gas sensor with radiation guide | |
| CN103134780A (en) | Closely attached type light emitting diode induction fluorescence detector for exciting light path | |
| CN104677876B (en) | A kind of gaseous material detection device based on transparent capillary structure and fluorescence | |
| US11467088B2 (en) | Detector | |
| CN1898551A (en) | Method for evaluating a scattered light signal and a scattered light detector for realizing the method | |
| CN102798621A (en) | Multi-piece reflection type ultraviolet induced biological fluorescence detection system | |
| CN107328730B (en) | Complete or collected works' accepted way of doing sth infrared gas sensor and its working method | |
| CN107328739B (en) | Complete or collected works' accepted way of doing sth infrared gas sensor and its working method | |
| CN102103082A (en) | Multi-light path optical fiber fluorescent sensor | |
| US5567947A (en) | Spectral line discriminator for passive detection of fluorescence | |
| CN103424387A (en) | Fluorescence spectrum detection device for pesticide residue | |
| CN103278489A (en) | Fluorescent oxygen sensor | |
| CN103293139B (en) | A kind of sensing device of fluorescence explosive detection instrument | |
| CN103091291A (en) | Real-time monitoring device for biological aerosol | |
| CN201177598Y (en) | Gas detection device | |
| CN203324188U (en) | Fluorescent oxygen sensor | |
| CN106525737A (en) | A multi-gas parallel trace detection fire hazard early warning device and method | |
| RU2005116018A (en) | INFRARED MULTI-BAND FLAME AND EXPLOSION DETECTOR | |
| CN107643275A (en) | A kind of integral type Raman optical-mechanical system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |