CN208313820U - A kind of infrared gas detection device based on double gas chambers - Google Patents
A kind of infrared gas detection device based on double gas chambers Download PDFInfo
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- CN208313820U CN208313820U CN201820854835.7U CN201820854835U CN208313820U CN 208313820 U CN208313820 U CN 208313820U CN 201820854835 U CN201820854835 U CN 201820854835U CN 208313820 U CN208313820 U CN 208313820U
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- eyeglass
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- gas
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Abstract
The utility model discloses a kind of infrared gas detection devices based on double gas chambers, including infrared lamp, collimating mirror, filter set, semi-transflective reflective eyeglass, detect gas chamber, detector A, MCU and driving power, driving power is connected with infrared lamp, collimating mirror, filter set, semi-transflective reflective eyeglass, detection gas chamber is successively set on the infrared beam of infrared lamp sending, the mirror surface of semi-transflective reflective eyeglass is towards filter set, detector A input terminal is connected with detection gas chamber, output end is connected with MCU, device further includes total reflection eyeglass, demarcate gas chamber, detector B and optical filter driver, the mirror surface of the reflected light directive total reflection eyeglass of semi-transflective reflective eyeglass, the reflected light of total reflection eyeglass enters calibration gas chamber, detector B input terminal is connected with calibration gas chamber, detector B output end is connected with MCU, MCU Output end is also connected with optical filter driver；The device detection gas concentration and can be monitored and switch to the optical filtering performance of optical filter.
Description
Technical field
The utility model relates to infrared gas detector, in particular to a kind of infrared gas detection dress based on double gas chambers
It sets.
Background technique
Infrared gas detector, using infrared principles detection gas concentration, based on infrared absorption type, core component is red
Outer sensor, infrared sensor is different to infrared waves degree of absorption using gas with various, is examined by measurement infrared absorption wavelength
Gas is surveyed, has anti-toxicity good, is quick on the draw, gas is with strong points, long service life, the strong feature of environmental suitability.
Traditional infrared gas detection device is detected by being directly entered detection gas chamber after optical filter, although in short term
It inside can achieve detection accuracy requirement, but see for a long time, with the variation of temperature and humidity, the optical filtering performance of optical filter changes
Become, will affect measurement accuracy.
Utility model content
In view of this, the purpose of the utility model is to provide a kind of infrared gas detection device based on double gas chambers, it can
Detection gas concentration, but can the optical filtering performance to optical filter be monitored and adjust.
The purpose of this utility model is achieved through the following technical solutions:
A kind of infrared gas detection device based on double gas chambers, including it is infrared lamp, collimating mirror, filter set, semi-transparent semi-reflecting
It penetrates eyeglass, detection gas chamber, detector A, MCU and driving power, the driving power to be connected with infrared lamp, the collimating mirror, filter
Mating plate group, semi-transflective reflective eyeglass, detection gas chamber are successively set on the infrared beam of infrared lamp sending, the semi-transflective reflective
The mirror surface of eyeglass is connected towards filter set, the detector A input terminal with detection gas chamber, and output end is connected with MCU, the dress
Set further includes total reflection eyeglass, calibration gas chamber, detector B and optical filter driver, the reflected light directive of semi-transflective reflective eyeglass
It is totally reflected the mirror surface of eyeglass, the reflected light of the total reflection eyeglass enters calibration gas chamber, the detector B input terminal and calibration gas
Room is connected, and the detector B output end is connected with MCU, and the MCU output end is also connected with optical filter driver, filter set
It is arranged on a switching device of optical fiber, the optical filter driver is connected with the motor of switching device of optical fiber.
The filter set is 10 eyeglass filter sets.
Further, the switching device of optical fiber is a runner, and the runner is driven by a motor, the filter of the filter set
Mating plate is disposed in an evenly spaced relation in runner circumferential direction, and the axis of runner is arranged on infrared beam.
The beneficial effects of the utility model are:
A kind of infrared gas detection device based on double gas chambers of the utility model, by increasing filter set, semi-transparent half
Reflecting optics, total reflection eyeglass, calibration gas chamber and detector B make the infrared light through filter set be divided into two halves, half into
Enter to detect gas chamber, the other half enters calibration gas chamber, by demarcating gas chamber, detector B, MCU detection gas concentration, the concentration of detection
With Demarcate Gas concentration (i.e. the concentration of gas indoor gas is known in fact) in calibration gas chamber if compared relatively
Or there is no problem for the equal optical filtering performance for illustrating filter set, can continue to use, if comparison is too wide in the gap to illustrate filter set
Optical filtering performance it is problematic, optical filter is switched by optical filter driver, reaches the performance of real-time monitoring optical filter, ensure that and be
The precision for detection gas of uniting.
Other advantages, target and feature of the utility model will be explained in the following description to a certain extent
It states, and to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, or
Person can be instructed from the practice of the utility model.The target of the utility model and other advantages can be said by following
Bright book is achieved and obtained.
Detailed description of the invention
It is practical to this below in conjunction with attached drawing in order to keep the purpose of this utility model, technical solution and advantage clearer
It is novel to be described in further detail, in which:
FIG. 1 is a schematic structural view of the utility model.
Specific embodiment
Hereinafter reference will be made to the drawings, and the preferred embodiment of the utility model is described in detail.It should be appreciated that preferably real
Example is applied only for illustrating the utility model, rather than in order to limit the protection scope of the utility model.
As shown in Figure 1, a kind of infrared gas detection device based on double gas chambers, including infrared lamp 1, collimating mirror 2, optical filter
Group 3, semi-transflective reflective eyeglass 4, detection gas chamber 5, detector A 6, MCU 7 and driving power 8, driving power 8 and infrared lamp 1
It is connected, collimating mirror 2, filter set 3, semi-transflective reflective eyeglass 4, detection gas chamber 5 are successively set on the infrared light that infrared lamp hair 1 goes out
Shu Shang, towards filter set 3,6 input terminal of detector A is connected the mirror surface of semi-transflective reflective eyeglass 4 with detection gas chamber 5, exports
End is connected with MCU 7, and device further includes total reflection eyeglass 11, demarcates gas chamber 12, detector B 13 and optical filter driver 14, partly
The mirror surface of the reflected light directive total reflection eyeglass 11 of saturating half reflection eyeglass 4, the reflected light of total reflection eyeglass 11 enter calibration gas chamber
13 input terminal of 12, detector B is connected with calibration gas chamber 12, and 13 output end of detector B is connected with MCU 7,7 output end of MCU
Also it is connected with optical filter driver 14, filter set is arranged on a switching device of optical fiber, the optical filter driver and filter
The motor of mating plate switching device is connected, it is preferred that and the switching device of optical fiber is a runner, and the runner is driven by a motor,
The optical filter of the filter set is disposed in an evenly spaced relation in runner circumferential direction, and the axis of runner is arranged on infrared beam.
Filter set 3 is 10 eyeglass filter sets, can guarantee the whole service life of device, does not have to replacement often and filters
Piece.
The course of work of the device are as follows:
Step 1: the starting driving infrared lamp 1 of driving power 8 shines.
Step 2: infrared lamp 1 shines and is made into directional light after collimating mirror 2.
Step 3: directional light carries out wavelength filtering by filter set 3, and wherein filter set 3 is the optical filtering of one group of 10 eyeglass
Piece group, can according to need and switch over, and change the wavelength of optical filtering.
Step 4: the light by filter set 3 enters semi-transflective reflective eyeglass 4, and semi-transflective reflective eyeglass 4 can penetrate one
Half light intensity, in addition half light intensity reflects.
Step 5: entering detection gas chamber 5 by the light that semi-transflective reflective eyeglass 4 projects and detect, detection signal passes through detector
A 6, which is detected, finally to be calculated in MCU 7.
Step 6: entering total reflection eyeglass 11 by the light that semi-transflective reflective eyeglass 4 reflects, be totally reflected the reflection of eyeglass 11
Light enters calibration gas chamber 12, and calibration gas chamber 12 is interior filled under test gas, detects signal and is detected by detector B 13, is passed through
MCU 7 carries out detection and obtains the calibration indoor gas concentration value of gas, and the actual concentrations value of the value and the gas is compared (mark
It is known for determining the indoor gas actual concentrations value of gas).
Step 7: when concentration and the actual concentrations that MCU 7 is detected not to it is corresponding when illustrate filter performance decline, wavelength generation
Offset, needs to adjust the switching that the rotary-type driver 14 of optical filter carries out optical filter, and every switching one optical filter records
Gasmetry concentration value in gas chamber is demarcated, the optical filter closest to actual concentrations is found out, then adjusts driving power control infrared lamp
Power complete entire adjustment process until reaching actual concentrations, guarantee the precision of system detection gas.
Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this
The technical solution of utility model is modified or replaced equivalently, should all without departing from the objective and range of the technical program
Cover in the scope of the claims of the utility model.
Claims (3)
1. a kind of infrared gas detection device based on double gas chambers, it is characterised in that: including infrared lamp, collimating mirror, filter set,
Semi-transflective reflective eyeglass, detection gas chamber, detector A, MCU and driving power, the driving power are connected with infrared lamp, the standard
Straight mirror, filter set, semi-transflective reflective eyeglass, detection gas chamber are successively set on the infrared beam of infrared lamp sending, and described half
The mirror surface of saturating half reflection eyeglass is connected towards filter set, the detector A input terminal with detection gas chamber, output end and MCU phase
Even, described device further includes total reflection eyeglass, calibration gas chamber, detector B and optical filter driver, semi-transflective reflective eyeglass it is anti-
Mirror surface of the light emission to total reflection eyeglass is penetrated, the reflected light of the total reflection eyeglass enters calibration gas chamber, the detector B input terminal
It is connected with calibration gas chamber, the detector B output end is connected with MCU, and the MCU output end is also connected with optical filter driver,
Filter set is arranged on a switching device of optical fiber, and the optical filter driver is connected with the motor of switching device of optical fiber.
2. a kind of infrared gas detection device based on double gas chambers according to claim 1, it is characterised in that: the optical filtering
Piece group is 10 eyeglass filter sets.
3. a kind of infrared gas detection device based on double gas chambers according to claim 1 or 2, it is characterised in that: described
Switching device of optical fiber is a runner, and the runner is driven by a motor, and the optical filter of the filter set is disposed in an evenly spaced relation in
Runner is circumferential, and the axis of runner is arranged on infrared beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820854835.7U CN208313820U (en) | 2018-06-04 | 2018-06-04 | A kind of infrared gas detection device based on double gas chambers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820854835.7U CN208313820U (en) | 2018-06-04 | 2018-06-04 | A kind of infrared gas detection device based on double gas chambers |
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| Publication Number | Publication Date |
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| CN208313820U true CN208313820U (en) | 2019-01-01 |
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| CN201820854835.7U Active CN208313820U (en) | 2018-06-04 | 2018-06-04 | A kind of infrared gas detection device based on double gas chambers |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693481A (en) * | 2020-06-23 | 2020-09-22 | 贵州电网有限责任公司 | Determination of SF6Method for calibrating non-dispersive infrared absorption spectrum of CO content in gas |
-
2018
- 2018-06-04 CN CN201820854835.7U patent/CN208313820U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693481A (en) * | 2020-06-23 | 2020-09-22 | 贵州电网有限责任公司 | Determination of SF6Method for calibrating non-dispersive infrared absorption spectrum of CO content in gas |
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