CN209215210U - A kind of Tail gas measuring light path system - Google Patents
A kind of Tail gas measuring light path system Download PDFInfo
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- CN209215210U CN209215210U CN201822122777.1U CN201822122777U CN209215210U CN 209215210 U CN209215210 U CN 209215210U CN 201822122777 U CN201822122777 U CN 201822122777U CN 209215210 U CN209215210 U CN 209215210U
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Abstract
The utility model discloses a kind of Tail gas measuring light path systems, belong to photoelectric detection technology field.It includes optical fiber source, light source transmission fiber, optical fiber source beam splitter, beam splitter tail optical fiber, fiber coupler and light signal receiving, light source transmission fiber one end is connect with the optical fiber source, the light source transmission fiber other end is connect with the multi-channel optical fibre light source beam splitter, the optical fiber source beam splitter is connected by the beam splitter tail optical fiber with fiber coupler one end, the light signal receiving and the fiber coupler are separated by coaxial arrangement, and are located along the same line.The Tail gas measuring light path system of the utility model uses optical fiber source beam splitter light splitting technology, so that each optical fiber luminous energy is uniformly distributed after light splitting, consistency is good, and each optical fiber luminous energy is mutually indepedent, interference is not generated mutually, the installation of detector light path system and debugging process are simplified, the reliability of detecting instrument is improved.
Description
Technical field
The utility model belongs to photoelectric detection technology field, specifically, being related to a kind of Tail gas measuring light path system.
Background technique
As transportation business develops rapidly, town and country air environment is given on especially road on great amount of fuel oil gas powered vehicle
Serious pollution is caused, the real-time effective monitoring inspection of carry out such as noxious gas emission concentration, content that motor-vehicle tail-gas is discharged
It surveys, is one of the effective ways of effective control pollution sources, existing several motor-vehicle tail-gas optical detectors mostly use multichannel
The design method of optical path, using plane mirror spectroscopic modes detecting instrument, optical path processes the design of plane beam splitter film layer, plated film
More demanding, each light luminous energy uniformity consistency is poor, since light source is by one group of reflecting mirror reflection beam splitting, instrument and equipment
Optical system alignment it is complicated, spend difficult big, special light source reflector is a connectivity structure, the minor change of light source, reflecting mirror,
Whole optical path will be had an impact, affect the reliability of detecting instrument.
Utility model content
1, it to solve the problems, such as
Complicated for the optical system alignment of existing tail gas optical detector instrument and equipment, the big problem of difficulty, this is practical
It is novel that a kind of Tail gas measuring light path system is provided.
2, technical solution
To solve the above problems, the utility model adopts the following technical scheme.
A kind of Tail gas measuring light path system, including optical fiber source, light source transmission fiber, optical fiber source beam splitter, beam splitter
Tail optical fiber, fiber coupler and light signal receiving, light source transmission fiber one end are connect with the optical fiber source, the light
The source transmission fiber other end is connect with the multi-channel optical fibre light source beam splitter, and the optical fiber source beam splitter passes through the beam splitter
Tail optical fiber is connected with fiber coupler one end, and the light signal receiving and the fiber coupler are separated by coaxial arrangement, and
It is located along the same line.
Preferably, the optical fiber output coupler other end is provided with optical fiber source beam-expanding collimation device.
Preferably, the light signal receiving includes that light source receives convergent lens and photo signal receiving sensor, described
Light source receives convergent lens and is connected with photo signal receiving sensor, and the light source receives convergent lens, the optical fiber source
Beam-expanding collimation device is located along the same line with optical fiber output coupler.
Preferably, the light source receives convergent lens and the optical fiber source beam-expanding collimation device is separated by setting, and is located at same
On one horizontal linear.
Preferably, the light source transmission fiber is multimode fibre.
Preferably, the Tail gas measuring light path system further includes host computer, the photo signal receiving sensor and host computer
It is connected, the optical fiber source is connected with host computer.
3, beneficial effect
Compared with the prior art, the utility model has the following beneficial effects:
(1) the Tail gas measuring light path system of the utility model uses optical fiber source beam splitter light splitting technology, so that after light splitting
Each optical fiber luminous energy is uniformly distributed, and consistency is good, compared with plane mirror light splitting technology, is significantly reduced optical component and is set
Meter and difficulty of processing, and the optical fiber source after beam splitting is respectively independent, it is non-interference, even if there is event in light source or component all the way for certain
Barrier problem nor affects on remaining optical path normal work, it is ensured that detecting instrument can also work normally under specific condition, simplify
The installation of detector light path system and debugging process；Meanwhile the high stable based on current optical fiber source and its optical fiber technology is highly reliable
Property, so that the reliability of detecting instrument greatly improved, the utility model is suitable for fixed or mobile motor-driven vehicle
The optical design application of gas detector can safely, conveniently have motor vehicle noxious gas emission concentration, content etc. in real time
The monitor and detection of effect；
(2) optical fiber source beam-expanding collimation device is arranged in the other end of fiber coupler in the utility model, being capable of accurate school
Light beam in quasi-fiber；
(3) the utility model receives convergent lens and photo signal receiving sensor as optical signal using light source and receives dress
It sets, light beam is received through light source and passes to photo signal receiving sensor after convergent lens is assembled, design is reasonable, easily fabricated peace
Dress；
(4) the light source transmission fiber of the utility model is multimode fibre, and multimode fibre can transmit the laser of relatively high power,
It lays a good foundation to divide the light-source system of multiple optical paths equally, multimode fibre is selected to can reduce the entirety of Tail gas measuring light path system
Cost.
Detailed description of the invention
Fig. 1 is that fiber beam splitting formula motor-vehicle tail-gas monitors system light path figure；
Fig. 2 is that plane mirror beam splitting type motor-vehicle tail-gas monitors system light path figure.
In figure: 1, optical fiber source；2, light source transmission fiber；3, optical fiber source beam splitter；4, beam splitter tail optical fiber；5, optical fiber coupling
Clutch；6, optical fiber source beam-expanding collimation device；7, light source receives convergent lens；8, photo signal receiving sensor；9, motor-vehicle tail-gas；
21, light source；22, light source couples mirror；23, light beam total reflection mirror；24, half-reflection and half-transmission spectroscope.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described.Wherein, it is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Therefore, below to providing in the accompanying drawings
The detailed description of the embodiments of the present invention be not intended to limit the range of claimed invention, but only
Indicate the selected embodiment of the utility model.
It should be noted that in the description of the present invention, term " on ", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom", "inner", "outside" be orientation based on the figure or
Positional relationship is merely for convenience of describing the present invention and simplifying the description, and is not the device or member of indication or suggestion meaning
Part must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limit to the utility model
System.
Term used in the explanation of this paper is stated is intended merely to description specific embodiment, it is not intended that limits this hair
Bright utility model, term " and or " used herein include any and all of one or more relevant listed items
Combination.
Embodiment 1
As shown in Figure 1, a kind of Tail gas measuring light path system, including optical fiber source 1, light source transmission fiber 2, optical fiber source point
Beam device 3, beam splitter tail optical fiber 4, fiber coupler 5, light signal receiving and host computer, 2 one end of light source transmission fiber with it is described
Optical fiber source 1 connects, and 2 other end of light source transmission fiber connect with optical fiber source beam splitter 3, and optical fiber source beam splitter 3 is by light source
It is split, optical fiber source beam splitter 3 is connected by beam splitter tail optical fiber 4 with 5 one end of fiber coupler, light signal receiving
It is separated by setting with the fiber coupler 5, and is located along the same line, i.e., fiber coupler 5 is arranged in road side, light letter
Number reception device is arranged in the road other side, is located on the same line fiber coupler 5 and light signal receiving.
In order to accurately calibrate the light beam in optical fiber, 5 other end of fiber coupler is provided with optical fiber source and expands
Collimator 6.
For above-mentioned light signal receiving, the present embodiment selects light source to receive convergent lens 7 and optical signal reception biography
Light source reception convergent lens 7 is connected with photo signal receiving sensor 8 and the other side of road, motor-driven vehicle is arranged in by sensor 8
Gas 9 is thrown into optical fiber source beam-expanding collimation device 6 and light source receives between convergent lens 7, and light source receives convergent lens 7, optical fiber
Light source beam-expanding collimation device 6 and fiber coupler 5 are located on same level straight line.
When optical fiber source 1 is through the transmission of light source transmission fiber 2,3 beam splitting of optical fiber source beam splitter, beam splitter tail optical fiber 4 and optical fiber
After coupler 5 exports, the motor-vehicle tail-gas 9 travelled in road can absorb the light that part is exported by fiber coupler 5, remaining light
Can be received through photo signal receiving sensor 8, photo signal receiving sensor 8 can transfer data to host computer, host computer by pair
Light source than primary source and after being partially absorbed is predominantly absorbed how much light to complete the inspection to motor-vehicle tail-gas in analytic process
It surveys.
A specific light beam is illustrated below:
A branch of 0.53um green light detection light is exported from optical fiber source 1, is coupled into fiber optic splitter 3, is averaged and is separated into 8
Shu Guang, into the tail optical fiber 4 of fiber optic splitter, optical transport is by respective fiber coupler 5, into optical fiber source beam-expanding collimation
Device 6 exports detection light, and detection light, which passes through, is detected section air environment, oil smoke ash of the luminous energy by vehicular emission in this section
Dirt, hydrocarbon etc. partially absorb, and the light source that remaining luminous energy reaches diameter 60mm receives convergent lens 7, converge to light and connect
Sensor 8 is received, the photosignal for being converted into the detection of motor-vehicle tail-gas 9 passes to host computer, passes through real-time detection motor-driven vehicle going
The variable quantity of front and back light beam spectral power obtains soot dust, hydrocarbon emission in motor-vehicle tail-gas 9 after analysis processing
Content whether exceeded (i.e. light obscuration) simultaneously shows output, and light source is divided into 8 beam light in the present embodiment, expands Tail gas measuring area
Domain improves the accuracy of Tail gas measuring, can carry out point of light sources with different wavelengths, different beam splitting quantity as needed in application
Beam.
As shown in Fig. 2, traditional Tail gas measuring light path system use light source couples mirror 22, using light beam total reflection mirror 23,
Half-reflection and half-transmission spectroscope 24 is split light source, and using such spectroscopic modes detecting instrument, adjustment is complicated, spends difficult big, detection
Reliability is low, and the Tail gas measuring light path system of the present embodiment is made using optical fiber source 1 using 3 light splitting technology of fiber optic splitter
Each optical fiber luminous energy is uniformly distributed after must being divided, and consistency is good, significantly reduces optical component design and difficulty of processing, and divide
Optical fiber source after beam is respectively independent, non-interference, even if certain light source or component failure problem all the way, nor affect on it
Remaining light road works normally, it is ensured that detecting instrument can also work normally under specific condition, simplify detector light path system peace
Dress and debugging process；Meanwhile the high stable high reliability based on current optical fiber source and its optical fiber technology, to greatly improved
The reliability of detecting instrument can pacify suitable for the optical design application of fixed or mobile motor vehicle tailgas detector
Entirely, easily to the real-time effective monitoring detection of the carry out such as motor vehicle noxious gas emission concentration, content.
The light source transmission fiber 2 of the present embodiment is multimode fibre, and it is flat that multimode fibre, which can transmit the laser of relatively high power,
The light-source system of multiple optical paths is divided to lay a good foundation, the entirety for selecting multimode fibre to can reduce Tail gas measuring light path system is made
Valence.
Embodiment 2
On the basis of above-described embodiment, the present embodiment is different from above-described embodiment, the light letter in the present embodiment
Number reception device and the fiber coupler 5 are separated by setting, and in same vertical straight line, the insufficient space in road two sides
In the case of, Tail gas measuring light path system can be vertically arranged, it is only necessary to by optical fiber source 1, light source transmission fiber 2, optical fiber light
Source beam splitter 3, beam splitter tail optical fiber 4, fiber coupler 5, optical fiber source beam-expanding collimation device 6 etc. are arranged in portal frame eminence, and
It can be directly by the existing portal frame for installing camera on road, on the ground of face optical fiber source beam-expanding collimation device 6
Reflection unit is set by light source reflected light signal receiving device.
Light signal receiving and the fiber coupler 5 are separated by setting, and in same vertical straight line, can also be by
Other various ways realizations, such as can be by optical fiber source 1, light source transmission fiber 2, optical fiber source beam splitter 3, beam splitter tail optical fiber
4, fiber coupler 5, optical fiber source beam-expanding collimation device 6 etc. are arranged in portal frame eminence, and can be directly by pacifying on road
The existing portal frame for filling camera, light signal receiving is arranged in subsurface below face optical fiber source beam-expanding collimation device 6,
And at the ground of setting light signal receiving, ground is reinforced, when preventing vehicle by being embedded with light signal receiving,
Ground intensity is inadequate.
Schematically the utility model is created above and embodiments thereof are described, description is not limiting,
Shown in the drawings is also one of the embodiment that the utility model is created, and actual structure is not limited to this.So such as
Those of ordinary skill in the art are inspired by it for fruit, in the case where not departing from this creation objective, not inventively designs
Frame mode similar with the technical solution and embodiment, should belong to the protection scope of this patent.
Claims (6)
1. a kind of Tail gas measuring light path system, it is characterised in that: including optical fiber source (1), light source transmission fiber (2), optical fiber light
Source beam splitter (3), beam splitter tail optical fiber (4), fiber coupler (5) and light signal receiving, the light source transmission fiber (2) one
End is connect with the optical fiber source (1), light source transmission fiber (2) other end and the multi-channel optical fibre light source beam splitter (3)
Connection, the optical fiber source beam splitter (3) is connected by the beam splitter tail optical fiber (4) with fiber coupler (5) one end, described
Light signal receiving and the fiber coupler (5) are separated by coaxial arrangement, and are located along the same line.
2. Tail gas measuring light path system according to claim 1, it is characterised in that: fiber coupler (5) other end
It is provided with optical fiber source beam-expanding collimation device (6).
3. Tail gas measuring light path system according to claim 2, it is characterised in that: the light signal receiving includes light
Source receives convergent lens (7) and photo signal receiving sensor (8), and the light source receives convergent lens (7) and optical signal is received and passed
Sensor (8) is connected, and the light source receives convergent lens (7), the optical fiber source beam-expanding collimation device (6) and fiber coupler
(5) it is located along the same line.
4. Tail gas measuring light path system according to claim 3, it is characterised in that: the light source receives convergent lens (7)
It is separated by setting with the optical fiber source beam-expanding collimation device (6), and is located on same level straight line.
5. Tail gas measuring light path system according to claim 1 or 2 or 3 or 4, it is characterised in that: the light source transmits light
Fine (2) are multimode fibre.
6. Tail gas measuring light path system according to claim 5, it is characterised in that: the Tail gas measuring light path system also wraps
Host computer is included, the photo signal receiving sensor (8) is connected with host computer, and the optical fiber source (1) is connected with host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822122777.1U CN209215210U (en) | 2018-12-18 | 2018-12-18 | A kind of Tail gas measuring light path system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822122777.1U CN209215210U (en) | 2018-12-18 | 2018-12-18 | A kind of Tail gas measuring light path system |
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| Publication Number | Publication Date |
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| CN209215210U true CN209215210U (en) | 2019-08-06 |
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| CN201822122777.1U Active CN209215210U (en) | 2018-12-18 | 2018-12-18 | A kind of Tail gas measuring light path system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114200689A (en) * | 2021-12-16 | 2022-03-18 | 安徽庆宇光电科技有限公司 | Light path debugging method and system for motor vehicle pollution detection equipment |
-
2018
- 2018-12-18 CN CN201822122777.1U patent/CN209215210U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114200689A (en) * | 2021-12-16 | 2022-03-18 | 安徽庆宇光电科技有限公司 | Light path debugging method and system for motor vehicle pollution detection equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Tail gas detection optical path system Effective date of registration: 20200708 Granted publication date: 20190806 Pledgee: Hefei merchants bank innovation Avenue Branch Pledgor: ANHUI QINGYU PHOTOELECTRIC TECHNOLOGY Co.,Ltd. Registration number: Y2020980003883 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230306 Granted publication date: 20190806 Pledgee: Hefei merchants bank innovation Avenue Branch Pledgor: ANHUI QINGYU PHOTOELECTRIC TECHNOLOGY CO.,LTD. Registration number: Y2020980003883 |