CN213957127U - Intermediate infrared gas sensing equipment - Google Patents
Intermediate infrared gas sensing equipment Download PDFInfo
- Publication number
- CN213957127U CN213957127U CN202022590738.1U CN202022590738U CN213957127U CN 213957127 U CN213957127 U CN 213957127U CN 202022590738 U CN202022590738 U CN 202022590738U CN 213957127 U CN213957127 U CN 213957127U
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- infrared
- mid
- fiber sensor
- amplifier
- 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
Images
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model discloses a middle infrared gas sensing equipment, including broadband light source, fiber coupler, air chamber, middle infrared optical fiber sensor, amplifier and record appearance, its characterized in that: well infrared optical fiber sensor is including the optical fiber branching unit, connect tunable scanning filter subassembly again on the optical fiber branching unit, tunable scanning filter subassembly connects the detector, well infrared optical fiber sensor connects the amplifier, the record appearance is connected to the amplifier, the beneficial effects of the utility model: the gas component and concentration conditions can be obtained by automatically analyzing the mid-infrared spectrum through the mid-infrared optical fiber sensor system, and the measurement of the gas component concentration is realized, so that the function of simultaneously measuring various substances at one time by the sensor is realized.
Description
Technical Field
The utility model relates to a sensing monitoring technology field specifically is a middle infrared gas sensing equipment.
Background
In order to prevent toxic gas from leaking, chemical production enterprises can effectively detect and alarm toxic gas and combustible gas in time for harm caused by production and life, continuously monitor the concentration of combustible and toxic gas in the environment and send out an alarm in time.
The method has important significance in monitoring the content of toxic gas in working and living environments in real time through the mid-infrared optical fiber sensor. Therefore, the on-line monitoring of the mid-infrared optical fiber sensor with low research and manufacturing cost and high detection sensitivity becomes a research hotspot, especially in the production fields of chemical industry, medical treatment, agriculture and the like.
The basic measurement light source of the gas sensor is portable mid-infrared broad spectrum light, the mid-infrared spectrum analysis method is used for judging, and usable alarm signals are provided.
The middle infrared optical fiber sensor has long service time, a plurality of electrochemical ammonia gas, hydrogen chloride and other dangerous gas sensors are available at present, direct electrochemical oxidation of noble metal catalysts in neutral or alkaline aqueous solution is mainly focused on, but the electrolyte of the sensor is easy to lose efficacy due to volatilization and water loss of leaked liquid and absorption of carbon dioxide in air, so that the sensor cannot be used for a long time, the accuracy is low, and the environment is polluted by waste electrolyte. Metal semiconductor, conductive polymer, nano material and dangerous gas sensors of ammonia gas, hydrogen chloride and the like based on electrochemical principle have the defects of low sensitivity, long response time, low precision, overhigh cost and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a middle infrared gas sensing equipment to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a gaseous sensing equipment of intermediate infrared, includes broadband light source, fiber coupler, air chamber, intermediate infrared fiber sensor, amplifier and record appearance, its characterized in that: the intermediate infrared optical fiber sensor comprises an optical fiber splitter, a tunable scanning filter component is connected to the optical fiber splitter and is connected with a detector, the intermediate infrared optical fiber sensor is connected with an amplifier, and the amplifier is connected with a recorder.
As a further aspect of the present invention: the surface of the fiber core of the mid-infrared optical fiber sensor is coated with carbon fluoride or porous silicon.
As a further aspect of the present invention: the cross section of the fiber core of the intermediate infrared optical fiber sensor is of a D-shaped structure.
As a further aspect of the present invention: two ends of the optical fiber coupler are respectively connected with the broadband light source and the air chamber, the optical fiber coupler is specifically a circulator, and at least three ports of the circulator are provided.
As a further aspect of the present invention: the tunable scanning filter component comprises a tunable scanning filter, a D/A card, an A/D card and a photoelectric receiver, wherein electronic circuit actions and data processing between the D/A card and the A/D card are coordinated by a DSP and are communicated with a PC.
Compared with the prior art, the beneficial effects of the utility model are that: the gas component and concentration conditions can be obtained by automatically analyzing the mid-infrared spectrum through the mid-infrared optical fiber sensor system, and the measurement of the gas component concentration is realized, so that the function of simultaneously measuring various substances at one time by the sensor is realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is the utility model discloses well infrared sensor fibre core structure sketch map.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, in an embodiment of the present invention, a mid-infrared gas sensing apparatus includes a broadband light source 1, an optical fiber coupler 2, an air chamber 3, a mid-infrared optical fiber sensor 4, an amplifier 5, and a recorder 6, two ends of the optical fiber coupler 2 are respectively connected to the broadband light source 1 and the air chamber 3, the optical fiber coupler 2 is specifically a circulator, at least three ports of the circulator are provided, the mid-infrared optical fiber sensor 4 includes an optical fiber splitter, a surface of a fiber core of the mid-infrared optical fiber sensor 4 is coated with carbon fluoride or porous silicon, a cross section of the fiber core of the mid-infrared optical fiber sensor 4 is in a "D" shape structure, the optical fiber splitter is further connected to a tunable scanning filter assembly, the tunable scanning filter assembly is connected to a detector, the mid-infrared optical fiber sensor 4 is connected to the amplifier 5, the amplifier 5 is connected with a recorder 6, the tunable scanning filter component comprises a tunable scanning filter, a D/A card, an A/D card and a photoelectric receiver, and electronic circuit actions and data processing between the D/A card and the A/D card are coordinated by a DSP and communicated with a PC.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. The utility model provides a gaseous sensing equipment of intermediate infrared, includes broadband light source (1), fiber coupler (2), air chamber (3), intermediate infrared fiber sensor (4), amplifier (5) and record appearance (6), its characterized in that: the intermediate infrared optical fiber sensor (4) comprises an optical fiber branching unit (7), a tunable scanning filter component (8) is connected to the optical fiber branching unit (7), the tunable scanning filter component (8) is connected with a detector (9), the intermediate infrared optical fiber sensor (4) is connected with an amplifier (5), and the amplifier (5) is connected with a recorder (6).
2. A mid-infrared gas sensing apparatus according to claim 1, wherein: the surface of the fiber core of the mid-infrared optical fiber sensor (4) is coated with carbon fluoride or porous silicon.
3. A mid-infrared gas sensing apparatus according to claim 1, wherein: the cross section of the fiber core of the intermediate infrared optical fiber sensor (4) is of a D-shaped structure.
4. A mid-infrared gas sensing apparatus according to claim 1, wherein: the two ends of the optical fiber coupler (2) are respectively connected with the broadband light source (1) and the air chamber (3), the optical fiber coupler (2) is specifically a circulator, and at least three ports of the circulator are provided.
5. A mid-infrared gas sensing apparatus according to claim 1, wherein: the tunable scanning filter component (8) comprises a tunable scanning filter, a D/A card, an A/D card and a photoelectric receiver, and electronic circuit actions and data processing between the D/A card and the A/D card are coordinated by a DSP and communicated with a PC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022590738.1U CN213957127U (en) | 2020-11-11 | 2020-11-11 | Intermediate infrared gas sensing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022590738.1U CN213957127U (en) | 2020-11-11 | 2020-11-11 | Intermediate infrared gas sensing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213957127U true CN213957127U (en) | 2021-08-13 |
Family
ID=77209160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022590738.1U Active CN213957127U (en) | 2020-11-11 | 2020-11-11 | Intermediate infrared gas sensing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213957127U (en) |
-
2020
- 2020-11-11 CN CN202022590738.1U patent/CN213957127U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2549912C2 (en) | Combined optoelectrochemical sensor of nitrogen oxides in gaseous samples | |
| US5440927A (en) | Fiber optic moisture sensor | |
| EP1777517A1 (en) | Ozone gas detecting element | |
| CN202281767U (en) | Hydrogen sulfide online monitoring analyzer | |
| US6284545B1 (en) | Filter for gas sensor | |
| CN202393706U (en) | Optical fiber multi-parameter water quality analyzer based on fluorescent probes | |
| CN106442370A (en) | On-line water quality detector and on-line water quality detecting method | |
| CN111579599B (en) | CO distributed in network 2 Online continuous detection system and detection method | |
| CN115561215A (en) | Two-channel quadrature phase-locked dissolved oxygen sensing device, system and method | |
| CN111693490A (en) | Gas telemetering device based on quantum cascade laser or interband cascade laser | |
| CN213957127U (en) | Intermediate infrared gas sensing equipment | |
| Moreno et al. | Analytical performance of an optical pH sensor for acid-base titration | |
| CN105424904A (en) | Gunpowder gas ingredient testing system | |
| CN211785286U (en) | Online continuous CO2 detection system with networked distribution | |
| CN112198118A (en) | Intermediate infrared gas sensing equipment | |
| CN102954949A (en) | System with multi-channel networkings for simultaneous monitoring on coal mine gas concentration | |
| CN101907560A (en) | Ammonia sensor based on nano porous reflecting sensing material and detection method | |
| CN2804861Y (en) | Device for testing air quality | |
| CN115684009A (en) | Small infrared gas sensor and working principle | |
| Russell et al. | An optical-fibre sensor for fluoride | |
| Trettnak et al. | New instrumentation for optical measuring of oxygen in gas or dissolved in liquids | |
| Gruber et al. | Instrumentation for optical measurement of dissolved oxygen based on solid state technology | |
| CN111089889A (en) | Silk-screen printing carbon nanotube sensor, preparation method thereof and pesticide detection application | |
| Bacci et al. | A compact optical fibre device for the detection of pH | |
| CN217112164U (en) | Atmospheric gaseous pollutant sensing circuit and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |