CN209513609U - A kind of multicomponent Freon gas infrared detecting device - Google Patents
A kind of multicomponent Freon gas infrared detecting device Download PDFInfo
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- CN209513609U CN209513609U CN201822255239.XU CN201822255239U CN209513609U CN 209513609 U CN209513609 U CN 209513609U CN 201822255239 U CN201822255239 U CN 201822255239U CN 209513609 U CN209513609 U CN 209513609U
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- 238000012545 processing Methods 0.000 claims abstract description 14
- 238000010521 absorption reaction Methods 0.000 claims abstract description 13
- 230000003287 optical effect Effects 0.000 claims abstract description 6
- 238000005259 measurement Methods 0.000 claims abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 230000010259 detection of temperature stimulus Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 59
- 238000001514 detection method Methods 0.000 description 11
- 230000001276 controlling effect Effects 0.000 description 7
- 238000000862 absorption spectrum Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 238000002329 infrared spectrum Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 230000005457 Black-body radiation Effects 0.000 description 3
- 238000004566 IR spectroscopy Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
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- 239000004615 ingredient Substances 0.000 description 2
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- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
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- 238000013507 mapping Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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Abstract
A kind of multicomponent Freon gas infrared detecting device of the utility model, including infrared light supply, gas chamber, be located at the indoor temperature sensor of gas, detector, Fabry Perot interference mirror, signal acquisition and controlling unit and signal processing and display unit；Infrared light supply issues the infrared light of bandwidth covering 8-10 mu m waveband to gas chamber；Gas chamber is used for sealed storage Freon gas to be detected；Fabry Perot interference mirror is installed on detector for adjusting the frequency of infrared light into detector that is penetrating gas chamber；Detector, for received optical signal to be converted into electric signal；Electric signal of the signal acquisition and controlling unit for signal and the detector detection of temperature collection sensor measurement；Signal processing and display unit carry out the component that processing obtains gas to be detected to received signal, proportional according to gas concentration under Current Temperatures and its characteristic absorption peak intensity, obtain the concentration information of gas to be detected.The device, which can be realized, detects the Freon gas of different component.
Description
Technical field
The utility model belongs to gas analysis detection technique field, and in particular to a kind of infrared inspection of multicomponent Freon gas
Survey device.
Background technique
Semiconductor-type freon gas body sensor and Infrared spectra adsorption side is widely used in existing Freon gas detection
Method is detected.
Semiconductor-type freon gas body sensor uses semiconductor material, plates other adsorbent materials such as ZO and various catalysis
Agent.When there are Freon gas, adsorbent material can adsorb Freon gas, and sensor resistance is caused to change, and this
When a little Freon gas desorptions, resistance restores normal again.By the variation of this resistance to realize the inspection to Freon gas
It surveys.
Infrared spectra adsorption method is that there are sink effect progress using infrared spectroscopy of the Freon gas to specific frequency
Detection.When there are Freon gas, the infrared spectroscopy of specific frequency can be actually taken up by gas, and lead to infrared light energy at transmission
Decline, when Freon gas may be not present, infrared light energy is normal at transmission.Use photodetector by infrared energy at transmission
Amount is converted to electric signal and is detected, to realize the quantitative detection to Freon gas.
But existing detection method can not carry out quantitative measurment to the Freon gas of various ingredients.
Utility model content
The purpose of the utility model is to provide a kind of detection device of multicomponent Freon gas, which be can be realized pair
The Freon gas of different component is detected.
Realize that the technical method of the utility model is as follows:
A kind of multicomponent Freon gas infrared detecting device, including infrared light supply, gas chamber, temperature sensor, detector,
Fabry Perot interference mirror, signal acquisition and controlling unit and signal processing and display unit；Wherein the temperature sensor is set
It is placed in gas chamber；
Infrared light supply issues the infrared light of bandwidth covering 8-10 mu m waveband to gas chamber；
Gas chamber is used for sealed storage Freon gas to be detected；
The Fabry Perot interference mirror is installed on detector, for adjust penetrate gas chamber, into the red of detector
The frequency of outer light；
Detector, for received optical signal to be converted into electric signal；
Signal acquisition and controlling unit, the electricity on the one hand detected for the signal of temperature collection sensor measurement and detector
Signal, and signal collected is transferred to signal processing and display unit, on the other hand for controlling optical light source and detector
Work；
Signal processing and display unit, handle received signal, obtain the component of gas to be detected, while basis
Gas concentration and its characteristic absorption peak intensity are proportional under Current Temperatures, the concentration information of gas to be detected are obtained, on boundary
It is shown on face.
Further, light source described in the utility model uses black body radiation light source emirs200.
Further, detector described in the utility model uses a pyroelectric detector of InfraTec company.
Beneficial effect
First, the utility model is since there are different frequencies in 8-10um for multicomponent Freon gas (1301, R22, R410A)
The Infrared spectra adsorption of rate absorbs the difference of infrared spectum according to it, Fabry Perot interferometer is adjusted, according to detection
The signal that device is detected realizes the identification to multicomponent Freon gas.
Second, the utility model is proportional according to gas concentration and its characteristic absorption peak intensity, realizes infrared suction
Receive the quantitative measurment of spectrum.
Third, utility model device stability, repeatability are preferably, it can be achieved that quantitative survey to multicomponent Freon gas
Amount.
Detailed description of the invention
Fig. 1 is multicomponent Freon gas infrared detecting device structural schematic diagram.
Fig. 2 is Fabry Perot interference mirror working principle.
Fig. 3 is multicomponent Freon gas infrared detecting device structure conjoint figure.
Fig. 4 is whole device workflow.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
The design philosophy of the utility model are as follows: since different substances has different molecular structures, be absorbed by difference
Infrared energy and generate corresponding infrared absorption spectrum, therefore with instrument mapping sample material infrared absorption spectrum,
Then according to parameters such as the infrared signature absorption peak position of various substances, number, relative intensity and shapes (peak width), so that it may push away
There are which groups in disconnected sample material, and determine molecular structure, and here it is the qualitative and structural analysis foundations of infrared spectroscopy；?
Under same temperature, when same substance various concentration, there is different absorption intensities in same absorption peak position, under certain condition
The concentration of sample material and its characteristic absorption peak intensity are proportional, and here it is the quantitative analysis foundations of infrared absorption spectrum.
Based on the above principles, the utility model designs Freon gas infrared detecting device, by the infrared ray of specific frequency by having
The environment of gas to be detected is converted to electric signal by the infrared ray that photoelectric converter (detector) will transmit through and is analyzed, mentioned
Take the information such as gaseous species, concentration.
A kind of multicomponent Freon gas infrared detecting device of the utility model embodiment, as shown in Figure 1, mainly by light
Source, gas chamber, detector (photoelectric converter), signal acquisition and controlling unit and signal processing and five part groups of display unit
At.
Infrared light supply issues the infrared light of bandwidth covering 8-10 mu m waveband to gas chamber；Due to Freon gas (1301, R22,
R410A) infrared absorption spectrum wavelength is in 8-10 μm, so infrared light supply bandwidth should cover 8-10 mu m waveband.Light source preferably selects
Low power dissipation design is used with a modulated black body radiation light source emirs200, emirs200, there is wider frequency
Modulation bandwidth exports 2-14 μm of infrared wavelength range.
Gas chamber is used for sealed storage Freon gas to be detected；The gas chamber is equipped with air inlet and air outlet, to be detected
Gas is input in gas chamber and is sealed by air inlet.
Detector is for receiving the infrared light for penetrating gas chamber and converting thereof into electric signal；Detector preferably uses
A pyroelectric detector of InfraTec company has added a piece of Fabry Perot interference mirror on the pyroelectric detector, can be real
Now to the arbitrary switch of the 8-10.5um wavelength for the infrared light for entering detection, Fabry Perot interference mirror is according to reflection Board position
Difference, realization pass through the light of different frequency, filter out the light of other frequencies, basic schematic diagram is as shown in Figure 2.
Signal acquisition and controlling unit, the electricity on the one hand detected for the signal of temperature collection sensor measurement and detector
Signal, and signal collected is transferred to signal processing and display unit, on the other hand for controlling optical light source and detector
Work.
Signal processing and display unit, handle received signal, obtain the concentration information of different Freon gases,
It is shown on interface；Simultaneously because gas is different to the characteristic absorption peak intensity of infrared light at a temperature of different, therefore according to working as
The temperature of preceding temperature sensor gas chamber collected utilizes the pass directly proportional to its characteristic absorption peak intensity of gas concentration at this temperature
System, obtains the concentration information of gas to be detected, and show on interface.
As shown in figure 3, signal acquisition and controlling unit is realized using circuit board, circuit board in the utility model embodiment
On be also integrated with the generation to infrared light supply driving signal, temperature acquisition, detector signal acquisition, data be packaged transmission, detection
Device is powered and the functions such as control and data communication, using a STM32 single-chip microcontroller as MCU on circuit board, to whole device reality
Now control.
In the utility model embodiment, signal processing and display unit are realized using host computer, main to realize to detector
Real time signal processing with the results show that realize human-computer interaction interface realize to complete machine function control.
As shown in figure 4, the workflow of utility model device are as follows: on power-up initializing, upper computer software and circuit board
Single-chip microcontroller establishes communication linkage, according to the different parameters information of user setting, is issued to parameter information by upper computer software
Single-chip microcontroller, parameter information required for detector is allocated to detector by single-chip microcontroller, while host computer passes algorithm parameter information
Pass algorithm part；After user clicks start button, 2-14um blackbody radiation source emirs200 is red to multicomponent Freon gas
Outer absorption frequency (8-10um) is scanned, and Fabry Perot interference mirror in pyroelectric detector is regulated and controled respectively through frequency
To at the Infra-red Absorption Frequency of different Freon gases, single-chip microcontroller can acquire detector output signal in real time, and data are transmitted
To host computer, host computer calls algorithm part to handle data in real time, resolves and obtains the concentration letter of different Freon gases
Breath, and display data on upper computer software interface and shown with curve.
The device of the utility model uses Freon gas to the principle of specific frequency Infrared spectra adsorption, using method cloth
In-Paro interference mirror through infrared light frequency can the principle that adjusts of electricity, realize quantitative survey to various ingredients Freon gas
Amount, at the same it is proportional using gas concentration and its characteristic absorption peak intensity, realize the survey to various concentration Freon gas
Amount is compensated for the technological deficiency of a variety of Freon gases while detection in existing market, and there are certain market demands.Meet
To the miniaturized and portable demand of Freon gas detection device in confined space, exists and be widely applied very much scene.
In conclusion the above is only the preferred embodiments of the present utility model only, it is not intended to limit the utility model
Protection scope.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all wrap
Containing being within the protection scope of the utility model.
Claims (3)
1. a kind of multicomponent Freon gas infrared detecting device, which is characterized in that including infrared light supply, gas chamber, temperature sensing
Device, detector, Fabry Perot interference mirror, signal acquisition and control unit and signal processing and display unit；The wherein temperature
Degree sensor is set in gas chamber；
Infrared light supply issues the infrared light of bandwidth covering 8-10 mu m waveband to gas chamber；
Gas chamber is used for sealed storage Freon gas to be detected；
The Fabry Perot interference mirror is installed on detector, penetrates gas chamber, infrared light into detector for adjusting
Frequency；
Detector, for received optical signal to be converted into electric signal；
Signal acquisition and controlling unit, the telecommunications on the one hand detected for the signal of temperature collection sensor measurement and detector
Number, and signal collected is transferred to signal processing and display unit, on the other hand for controlling the work of optical light source and detector
Make；
Signal processing and display unit, handle received signal, obtain the component of gas to be detected, while according to current
At a temperature of gas concentration and its characteristic absorption peak intensity it is proportional, the concentration information of gas to be detected is obtained, on interface
Display.
2. multicomponent Freon gas infrared detecting device according to claim 1, which is characterized in that the light source is using black
Body radiating light source emirs200.
3. multicomponent Freon gas infrared detecting device according to claim 1, which is characterized in that the detector uses
A pyroelectric detector of InfraTec company.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822255239.XU CN209513609U (en) | 2018-12-29 | 2018-12-29 | A kind of multicomponent Freon gas infrared detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822255239.XU CN209513609U (en) | 2018-12-29 | 2018-12-29 | A kind of multicomponent Freon gas infrared detecting device |
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| Publication Number | Publication Date |
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| CN209513609U true CN209513609U (en) | 2019-10-18 |
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| CN201822255239.XU Withdrawn - After Issue CN209513609U (en) | 2018-12-29 | 2018-12-29 | A kind of multicomponent Freon gas infrared detecting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682770A (en) * | 2018-12-29 | 2019-04-26 | 中国船舶重工集团公司第七一八研究所 | A kind of multicomponent Freon gas infrared detecting device |
-
2018
- 2018-12-29 CN CN201822255239.XU patent/CN209513609U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682770A (en) * | 2018-12-29 | 2019-04-26 | 中国船舶重工集团公司第七一八研究所 | A kind of multicomponent Freon gas infrared detecting device |
| CN109682770B (en) * | 2018-12-29 | 2024-04-09 | 中国船舶重工集团公司第七一八研究所 | Multicomponent freon gas infrared detection device |
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