CN209069825U - A kind of binary channels infrared gas sensor - Google Patents
A kind of binary channels infrared gas sensor Download PDFInfo
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- CN209069825U CN209069825U CN201821769087.9U CN201821769087U CN209069825U CN 209069825 U CN209069825 U CN 209069825U CN 201821769087 U CN201821769087 U CN 201821769087U CN 209069825 U CN209069825 U CN 209069825U
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- optical cavity
- binary channels
- infrared gas
- circuit board
- upper cover
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Abstract
The utility model discloses a kind of binary channels infrared gas sensors, it include: optical cavity upper cover (2), optical cavity lower cover (3), waterproof ventilated membrane (1), infrared light supply (4), binary channels infrared gas detector (5), circuit board (7) and fixation member (8), optical cavity upper cover (2) upper surface is provided with venthole and posts waterproof ventilated membrane (1)；Infrared light supply (4) and binary channels infrared gas detector (5) are respectively fixedly disposed at circuit board (7) two sides；Mounting hole is respectively set on the two sides of optical cavity lower cover (3), infrared light supply (4) and binary channels infrared gas detector (5) protrude into the optical channel being made of the internal chamber wall of reflecting surface and lower cover on upper cover internal chamber wall after being each passed through mounting hole；Circuit board is provided with fixation hole on (7), protrudes into the firm banking of optical cavity upper cover (2) side wall after passing through fixation hole by fixation member (8).The utility model can realize the high-precision detection to the object gas of various concentration range, have the advantages that structure is simple, easy to assembly, performance is stable.
Description
Technical field
The utility model relates to a kind of binary channels infrared gas sensors, belong to sensor technical field.
Background technique
Binary channels infrared gas sensor is based on non-dispersive infrared (NDIR) principle to object gas present in air
The sensor that (such as carbon dioxide, methane etc.) is detected, binary channels infrared gas sensor generally include infrared light supply, bilateral
Road infrared gas detector, optical cavity and microprocessor circuit.Binary channels infrared gas detector includes that reference channel receives
Window and service aisle receive window.Infrared light supply emits infrared light in one end of optical cavity, and infrared light passes through optical cavity
The reflection of inner wall reaches detector, the concentration information of the available object gas of electric signal of analysis detector output.
Common infrared gas sensor uses single channel infrared gas detector, to the detection accuracy of object gas by
Environment temperature factor is affected, and lacks the functions such as water vapor interference, temperature-compensating.
Summary of the invention
It is infrared the technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a kind of binary channels
Gas sensor, solve the detection accuracy of existing infrared gas sensor object gas in detection vulnerable to environment temperature because
The problem of element influences, and detection accuracy is caused to reduce.It is simple, easy to assembly, high-precision that the utility model provides a kind of structure
Binary channels infrared gas sensor.
The utility model specifically uses following technical scheme to solve above-mentioned technical problem:
A kind of binary channels infrared gas sensor, comprising: optical cavity upper cover, optical cavity lower cover, waterproof ventilated membrane, red
Outer light source, binary channels infrared gas detector, circuit board and fixation member, wherein cap upper surface is provided with ventilation in optical cavity
Hole and side wall are provided with firm banking, and waterproof ventilated membrane is posted on venthole；The infrared light supply and the infrared gas of binary channels
Bulk detector is respectively fixedly disposed at circuit board two sides, and infrared light supply and binary channels infrared gas detector respectively with circuit board
It is electrical connected；Mounting hole, the infrared light supply and binary channels infrared-gas are respectively set on the two sides of the optical cavity lower cover
Detector protrudes into after being each passed through the mounting hole of optical cavity lower cover two sides by reflection fixed on optical cavity upper cover internal chamber wall
The optical channel that the internal chamber wall of face and optical cavity lower cover is constituted；It is provided with fixation hole on the circuit board, is worn by fixation member
It is protruded into the firm banking of optical cavity upper cover side wall after crossing fixation hole, it will be fixed between optical cavity upper cover and circuit board.
Further, as a kind of optimal technical scheme of the utility model: the optical cavity upper cover and optical cavity
The internal chamber wall of lower cover is respectively provided with Gold plated Layer.
Further, as a kind of optimal technical scheme of the utility model: on the internal chamber wall of the optical cavity upper cover
Reflecting surface is fixedly installed in degree angle.
Further, as a kind of optimal technical scheme of the utility model: further including being arranged in circuit board and optics cavity
The two sides of silicagel pad between body lower cover, the silicagel pad are arranged for penetrating infrared light supply and binary channels infrared gas detector
Perforation.
Further, as a kind of optimal technical scheme of the utility model: the circuit board includes sequentially connected electricity
Source circuit, operation amplifier circuit and MCU circuit, output interface.
Further, as a kind of optimal technical scheme of the utility model: the output interface using digital interface and
Or analog interface.
Further, as a kind of optimal technical scheme of the utility model: the fixation member uses fixed screw.
The utility model by adopting the above technical scheme, can have the following technical effects:
The utility model provides a kind of binary channels infrared gas sensor, passes through optical cavity upper cover and the optical cavity
The internal chamber wall of lower cover constitutes optical channel, is each passed through optical cavity lower cover by infrared light supply and binary channels infrared gas detector
It is protruded into optical channel after the mounting hole of two sides, the light that infrared light supply issues reaches binary channels infrared-gas by reflective surface
Reception window on detector carries out gas concentration detection, and is exported the signal of detection by circuit board.The binary channels is infrared
Gas sensor can eliminate influence of the environment temperature to detection object gas precision by temperature-compensating, and environment resistant steam is dry
It disturbs, the high-precision detection to the object gas of various concentration range may be implemented, the way of output of the sensor is taken into account number and connect
Mouth and analog interface.It has the advantages that structure is simple, easy to assembly, performance is stable, numeral output, has a wide range of application.
Detailed description of the invention
Fig. 1 is the side view of the utility model binary channels infrared gas sensor.
Fig. 2 is that the structure of the utility model binary channels infrared gas sensor splits schematic diagram.
Wherein Symbol explanation: waterproof ventilated membrane 1, optical cavity upper cover 2, optical cavity lower cover 3, infrared light supply 4, binary channels
Infrared gas detector 5, silicagel pad 6, circuit board 7 and fixation member 8.
Specific embodiment
The embodiments of the present invention is described with reference to the accompanying drawings of the specification.
Such as Fig. 1 and shown, the utility model devises a kind of binary channels infrared gas sensor, comprising: in optical cavity
Lid 2, optical cavity lower cover 3, waterproof ventilated membrane 1, infrared light supply 4, binary channels infrared gas detector 5, silicagel pad 6, circuit board 7
With fixation member 8.
Specifically, as shown in Fig. 2, in the utility model structure, 2 upper surface of optical cavity upper cover is provided with venthole
And side wall is provided with firm banking, and waterproof ventilated membrane 1 is posted on venthole；The infrared light supply 4 and the infrared gas of binary channels
Bulk detector 5 is respectively fixedly disposed at 7 two sides of circuit board, and infrared light supply 4 and binary channels infrared gas detector 5 respectively with electricity
Road plate 7 is electrical connected；Mounting hole is respectively set on the two sides of the optical cavity lower cover 3, the infrared light supply 4 and binary channels are red
Outer gas detector 5 protrudes into after being each passed through the mounting hole of 3 two sides of optical cavity lower cover by solid on 2 internal chamber wall of optical cavity upper cover
The optical channel that the internal chamber wall of fixed reflecting surface and optical cavity lower cover 3 is constituted；It is provided with fixation hole on the circuit board 7, by
Fixation member 8 protrudes into the firm banking of 2 side wall of optical cavity upper cover after passing through fixation hole, by optical cavity upper cover 2 and electricity
It is fixed between road plate 7.Preferably, the fixation member 8 can use fixed screw, and stationarity can be enhanced by fixed screw
Energy.
Preferably, the internal chamber wall of the optical cavity upper cover 2 and optical cavity lower cover 3 is respectively provided with Gold plated Layer, by gold-plated
Layer reflects convenient for light.Further, reflecting surface is fixedly installed in 45 degree of angles on the internal chamber wall of the optical cavity upper cover 2, makes
45 degree angles are more convenient for contact of the reflecting surface with light, spread reflection range, raising reflex.
Also, silicagel pad 6 is set between circuit board 7 and optical cavity lower cover 3, and the two sides of the silicagel pad 6, which are arranged, to be used
In the perforation for penetrating infrared light supply 4 and binary channels infrared gas detector 5, by circuit board 7 infrared light supply 4 and binary channels it is red
Outer gas detector 5 by protruding into the mounting hole of optical cavity lower cover 3 after perforation, leads to silicagel pad 6 and realizes baffle and pad respectively
The effect of setting.
The circuit board 7 includes sequentially connected power circuit, operation amplifier circuit, MCU circuit, output interface.And
And the binary channels infrared gas detector 5 connects operation amplifier circuit, connects MCU circuit by operation amplifier circuit；Institute
State MCU circuit connection infrared light supply 4.And the output interface uses digital interface and/or analog interface, so that sensor is defeated
Various ways can be used out.
The working principle of the utility model is:
This sensor constitutes optics by the reflecting surface of optical cavity upper cover 2 and the internal chamber wall of the optical cavity lower cover 3
Channel is extended back by the mounting hole that infrared light supply 4 and binary channels infrared gas detector 5 are each passed through 3 two sides of optical cavity lower cover
Enter in optical channel, the light that the MCU circuit control infrared light supply 4 on circuit board 7 issues, 45 degree by optical cavity upper cover 2
The gold-plated reflecting surface transmitting at angle reaches the reception window on binary channels infrared gas detector 5, is detected by binary channels infrared-gas
Device 5 carries out gas concentration and detects to obtain detectable signal, and by detection input MCU circuit, is exported by MCU processing of circuit
Digital or analog signal is respectively exported signal by digital signal output interface or analog signal output interface.
To sum up, the binary channels infrared gas sensor of the utility model can eliminate environment temperature pair by temperature-compensating
The influence of object gas precision is detected, the interference of environment resistant steam may be implemented to the high-precision of the object gas of various concentration range
Degree detection, the way of output of the sensor take into account digital interface and analog interface.Its simple with structure, easy to assembly, performance
Stabilization, numeral output, the advantages of having a wide range of application.
The embodiments of the present invention is explained in detail above in conjunction with attached drawing, but the utility model is not limited to
Above embodiment can also not depart from the utility model within the knowledge of a person skilled in the art
It is made a variety of changes under the premise of objective.
Claims (7)
1. a kind of binary channels infrared gas sensor characterized by comprising optical cavity upper cover (2), optical cavity lower cover
(3), waterproof ventilated membrane (1), infrared light supply (4), binary channels infrared gas detector (5), circuit board (7) and fixation member (8),
Wherein optical cavity upper cover (2) upper surface is provided with venthole and side wall is provided with firm banking, and posts on venthole anti-
Water ventilated membrane (1)；The infrared light supply (4) and binary channels infrared gas detector (5) are respectively fixedly disposed at circuit board (7) two
Side, and infrared light supply (4) and binary channels infrared gas detector (5) are electrical connected with circuit board (7) respectively；The optical cavity
Mounting hole is respectively set on the two sides of lower cover (3), the infrared light supply (4) and binary channels infrared gas detector (5) are worn respectively
It protrudes into after crossing the mounting hole of optical cavity lower cover (3) two sides by reflecting surface and light fixed on optical cavity upper cover (2) internal chamber wall
Learn the optical channel that the internal chamber wall of cavity lower cover (3) is constituted；It is provided with fixation hole on the circuit board (7), by fixation member (8)
It is protruded into after fixation hole in the firm banking of optical cavity upper cover (2) side wall, by optical cavity upper cover (2) and circuit board
(7) fixed between.
2. binary channels infrared gas sensor according to claim 1, it is characterised in that: the optical cavity upper cover (2) and
The internal chamber wall of optical cavity lower cover (3) is respectively provided with Gold plated Layer.
3. binary channels infrared gas sensor according to claim 1, it is characterised in that: the optical cavity upper cover (2)
Reflecting surface is fixedly installed in 45 degree of angles on internal chamber wall.
4. binary channels infrared gas sensor according to claim 1, it is characterised in that: further include being arranged in circuit board (7)
Silicagel pad (6) between optical cavity lower cover (3), the silicagel pad (6) two sides setting for penetrate infrared light supply (4) and
The perforation of binary channels infrared gas detector (5).
5. binary channels infrared gas sensor according to claim 1, it is characterised in that: the circuit board (7) includes successively
Power circuit, operation amplifier circuit, the MCU circuit, output interface of connection.
6. binary channels infrared gas sensor according to claim 5, it is characterised in that: the output interface is connect using number
Mouth and/or analog interface.
7. binary channels infrared gas sensor according to claim 1, it is characterised in that: the fixation member (8) is using solid
Determine screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821769087.9U CN209069825U (en) | 2018-10-30 | 2018-10-30 | A kind of binary channels infrared gas sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821769087.9U CN209069825U (en) | 2018-10-30 | 2018-10-30 | A kind of binary channels infrared gas sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209069825U true CN209069825U (en) | 2019-07-05 |
Family
ID=67096762
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821769087.9U Active CN209069825U (en) | 2018-10-30 | 2018-10-30 | A kind of binary channels infrared gas sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209069825U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD1027682S1 (en) | 2021-09-30 | 2024-05-21 | Carrier Corporation | Refrigerant detection sensor housing |
-
2018
- 2018-10-30 CN CN201821769087.9U patent/CN209069825U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD1027682S1 (en) | 2021-09-30 | 2024-05-21 | Carrier Corporation | Refrigerant detection sensor housing |
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