CN215894386U - Infrared multi-light-source multi-detector gas detection device - Google Patents
Infrared multi-light-source multi-detector gas detection device Download PDFInfo
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- CN215894386U CN215894386U CN202121869129.8U CN202121869129U CN215894386U CN 215894386 U CN215894386 U CN 215894386U CN 202121869129 U CN202121869129 U CN 202121869129U CN 215894386 U CN215894386 U CN 215894386U
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- 238000001514 detection method Methods 0.000 title claims abstract description 31
- 238000012545 processing Methods 0.000 claims abstract description 5
- 238000004891 communication Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000003491 array Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 11
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 28
- 238000005516 engineering process Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
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- 230000007547 defect Effects 0.000 description 1
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Abstract
The utility model discloses an infrared multi-light source multi-detector gas detection device, which is characterized by comprising the following components: one end of the air chamber is an infrared transmitting end, the other end of the air chamber is an infrared receiving end, the infrared transmitting end of the air chamber is provided with a plurality of infrared light sources, the infrared receiving end of the air chamber is provided with a plurality of infrared sensors, reflectors are uniformly distributed at the positions of the infrared transmitting end except the positions where the infrared light sources are installed, and the reflectors are distributed at the positions of the infrared receiving end except the positions where the infrared sensors are installed; an air inlet and an air outlet are arranged on two sides of the air chamber; the control module is used for receiving and processing data of the infrared sensor; the device increases the retention time of the infrared light in the air chamber through the reflector, so that the infrared light and the gas are fully contacted in the air chamber, the measurement error caused by the instability of the light source can be eliminated, and the measurement precision is improved.
Description
Technical Field
The utility model relates to an infrared multi-light-source multi-detector gas detection device, and belongs to the technical field of gas detection.
Background
With the acceleration of the modern process and the expansion of industrial scale of China, various domestic gas and industrial gas are increased year by year, and many dangerous gases are not lacked. In the production and living environment of people, once the use or the storage is improper, the concentration reaches a certain concentration, and the serious threat to the life property and the living space is formed. Gas detection technology has advanced over the years and has entered a relatively mature stage. Several infrared gas detection techniques are characterized as follows: the single light source double detector detection technology can eliminate zero drift, does not need to be calibrated by using a standard gas sample before measurement, but cannot eliminate measurement errors caused by mismatching of a measurement detector and a reference detector. The single light source single detector detection technology is characterized in that zero setting is carried out on a detector output signal before use, then calibration is carried out on standard gas, and then the detection technology can be used for measuring the concentration of the measured gas, and the measurement process is complex. In the existing national patent existing at the present stage, CN204389388U effectively solves the problems of detection of gas concentration and small volume, but it does not fully consider whether the detection device can complete the detection task when introducing the mixed gas, and the problems of poor detection precision, sensor coupling, stability and reliability of the system in long-time operation, and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of poor detection precision, sensor coupling and poor stability of long-time working reliability of a system in the prior art, and provides an infrared multi-light-source multi-detector gas detection device.
An infrared multi-light-source multi-detector gas detection device is characterized by comprising:
the infrared receiving end of the air chamber is provided with a plurality of infrared sensors, reflectors are uniformly distributed at the positions of the infrared transmitting end except the positions where the infrared light sources are installed, and the reflectors are uniformly distributed at the positions of the infrared receiving end except the positions where the infrared sensors are installed; an air inlet and an air outlet are arranged on two sides of the air chamber;
and the control module is used for receiving and processing the data of the infrared sensor.
Further, an air extractor is arranged at the air inlet.
Further, a dryer is arranged in the air chamber.
Furthermore, a plurality of infrared sensors are arranged side by side at an infrared receiving end to form a sensor array.
Further, the reflector is a concave reflector.
Furthermore, the control module comprises a phase-locked amplifier, an AD converter, a signal processor and a communication interface; the phase-locked amplifier is used for amplifying an analog signal of the signal output by the infrared light source; the AD converter is used for performing digital quantity conversion on the analog quantity signal; the signal processor is used for calculating the obtained data and transmitting the data to the PC through the communication interface.
Further, the device also comprises a power supply adaptation module for supplying power to the whole device.
Compared with the prior art, the utility model has the following beneficial effects:
(1) the residence time of the infrared light in the air chamber is prolonged through the reflector, so that the infrared light and the gas are fully contacted in the air chamber, the measurement error caused by the instability of a light source can be eliminated, and the measurement precision is improved;
(2) the device adopts a multi-light-source multi-detection system, and the problems of single type of detected gas and sensor coupling are effectively solved through the detection system; meanwhile, the multi-light-source multi-detection system can compare output signals measured by different detectors in the same environment, and can effectively improve the system precision and the stability and reliability of the system in long-time work.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a flow chart of the present invention;
in the figure: 1. an air chamber; 2. an infrared light source; 3. an infrared sensor; 4. a mirror; 5. an air inlet; 6. an air outlet; 7. an air extractor; 8. and (7) a dryer.
Detailed Description
The utility model is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The infrared multi-light-source multi-detector gas detection device shown in fig. 1 comprises a gas chamber 1, wherein a gas inlet 5 and a gas outlet 6 are arranged on two sides of the gas chamber 1, and an air extractor 7 and a dryer 8 are arranged at the gas inlet 5, so that gas in a space to be detected is filled in the gas chamber 1 quickly.
The infrared detection device is characterized in that one end of the air chamber 1 is an infrared transmitting end, the other end of the air chamber 1 is an infrared receiving end, the infrared transmitting end of the air chamber 1 is provided with two infrared light sources 2 which emit infrared detection light rays simultaneously, and the infrared receiving end of the air chamber 1 is provided with a plurality of infrared sensors 3 which are arranged side by side to form a sensor array. Reflectors 4 are uniformly distributed at the positions of the infrared emission end except the infrared light source 2; the infrared receiving end except the infrared sensor 3 is provided with a reflector 4, and the reflector 4 is a concave reflector with a reflecting surface opposite to the reflecting surface.
As shown in fig. 2, the detection apparatus further includes a control module for receiving and processing the infrared signal, wherein the control module includes a lock-in amplifier, an AD converter, a signal processor, and a communication interface. Wherein the lock-in amplifier is used to amplify the analog signal passing through the device, in this embodiment to amplify the analog signal passing through the output signal of the infrared light source 2; the AD converter is used for carrying out digital quantity conversion on the analog quantity, the signal processor calculates the obtained data, and the data are transmitted to the PC through the communication interface.
The checking device also comprises a power supply adaptation module which provides the required working voltage for the whole system, and the power supply design of the system must be combined with the power supply requirements of each module.
When the device is used, the air chamber is filled with gas to be detected by opening the air pump 7, the light source is emitted from the infrared light source, the infrared light source directly irradiates the air chamber, the air chamber is internally provided with a plurality of reflectors 4 and a sensor array, when infrared radiation irradiates on the reflectors 4, the infrared light source can be irradiated on the sensor array fully by continuous reflection, the instability of the light source can be eliminated, the measurement errors caused by mismatching of sensitive elements and the like, and the device can continuously work for a long time. The infrared light source and the sensor both belong to precise instruments, and after each measurement is finished, the dryer is opened to remove residual water vapor in the air chamber, so that the damage of a precise device is prevented, and the service life of the system is prolonged.
The output signal is processed by the single chip processing module to the output signal measured by the sensor array, so that the null shift can be reduced, the influence of powder and water vapor can be eliminated, the source of errors is reduced, and the measurement precision is improved. And finally, transmitting the data to a server through serial port communication. Software developed on the server is responsible for communicating with the module and analyzing the received data. And finally, detecting the obtained gas and the gas concentration and other data by constructing a web page interface for real-time display.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. An infrared multi-light-source multi-detector gas detection device is characterized by comprising:
the infrared receiving device comprises a gas chamber (1), wherein one end of the gas chamber (1) is an infrared transmitting end, the other end of the gas chamber is an infrared receiving end, the infrared transmitting end of the gas chamber (1) is provided with a plurality of infrared light sources (2), the infrared receiving end of the gas chamber (1) is provided with a plurality of infrared sensors (3), reflectors (4) are arranged at positions of the infrared transmitting end except positions where the infrared light sources (2) are installed, and reflectors (4) are arranged at positions of the infrared receiving end except positions where the infrared sensors (3) are installed; an air inlet (5) and an air outlet (6) are arranged on two sides of the air chamber (1);
a control module for receiving and processing data of the infrared sensor (3).
2. The infrared multi-light-source multi-detector gas detection device according to claim 1, wherein an air pump (7) is arranged at the outlet of the air inlet (5).
3. The infrared multi-light-source multi-detector gas detection device according to claim 1, wherein a dryer (8) is provided in the gas chamber (1).
4. The infrared multi-light-source multi-detector gas detection device as claimed in claim 1, wherein the infrared sensors (3) are arranged in a plurality of sensor arrays side by side at the infrared receiving end.
5. The infrared multi-light-source multi-detector gas detection device according to claim 1, wherein the reflector (4) is a concave reflector.
6. The infrared multi-light-source multi-detector gas detection device as claimed in claim 1, wherein the control module comprises a lock-in amplifier, an AD converter, a signal processor and a communication interface; the phase-locked amplifier is used for amplifying an analog signal of a signal output by the infrared light source (2); the AD converter is used for performing digital quantity conversion on the analog quantity signal; the signal processor is used for calculating the obtained data and transmitting the data to the PC through the communication interface.
7. The infrared multi-light-source multi-detector gas detection apparatus as claimed in claim 1, further comprising a power adapter module for supplying power to the entire apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121869129.8U CN215894386U (en) | 2021-08-11 | 2021-08-11 | Infrared multi-light-source multi-detector gas detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121869129.8U CN215894386U (en) | 2021-08-11 | 2021-08-11 | Infrared multi-light-source multi-detector gas detection device |
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| CN215894386U true CN215894386U (en) | 2022-02-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114705161A (en) * | 2022-06-02 | 2022-07-05 | 广州云舟智慧城市勘测设计有限公司 | Road bed settlement detection device for town road with intelligence is from transferring function |
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2021
- 2021-08-11 CN CN202121869129.8U patent/CN215894386U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114705161A (en) * | 2022-06-02 | 2022-07-05 | 广州云舟智慧城市勘测设计有限公司 | Road bed settlement detection device for town road with intelligence is from transferring function |
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Effective date of registration: 20240109 Address after: 7th Floor, Building D, International Student Entrepreneurship Park, No. 5 Lanyuan Road, Huayuan Industrial Zone, Binhai New Area, Tianjin, 300384 Patentee after: TIANJIN TONGYANG TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 210044, No. 219, Ning six road, Pukou District, Jiangsu, Nanjing Patentee before: Nanjing University of Information Science and Technology |
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