CN211576943U - Three-dimensional space gas concentration distribution measuring device - Google Patents
Three-dimensional space gas concentration distribution measuring device Download PDFInfo
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- CN211576943U CN211576943U CN202020160722.4U CN202020160722U CN211576943U CN 211576943 U CN211576943 U CN 211576943U CN 202020160722 U CN202020160722 U CN 202020160722U CN 211576943 U CN211576943 U CN 211576943U
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- 230000007246 mechanism Effects 0.000 claims abstract description 47
- 238000000862 absorption spectrum Methods 0.000 claims description 14
- 238000000041 tunable diode laser absorption spectroscopy Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 28
- 238000004587 chromatography analysis Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 36
- 230000006872 improvement Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000003325 tomography Methods 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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Abstract
The embodiment of the utility model discloses three-dimensional space gas concentration distribution measuring device, the device include workstation, actuating mechanism, scanning device, sensor and treater. The scanning device and the sensor are both installed on the workbench, and the driving mechanism is used for driving the workbench and the sensor to rotate. The processor is respectively connected with the driving mechanism, the scanning device and the sensor. The embodiment of the utility model provides a can carry out automatic fault measurement to three-dimensional space, after obtaining every planar fault structure of fault and light path integral concentration, use chromatography to reconstruct the planar concentration distribution of fault to further obtain three-dimensional space's gas concentration distribution. Compared with the traditional gas sensor, the measuring speed and efficiency are greatly improved.
Description
Technical Field
The utility model relates to an environmental monitoring technical field, concretely relates to three-dimensional space gas concentration distribution measuring device.
Background
People spend 90% of their time in indoor environments, and health and environmental problems caused by indoor pollutants are of particular concern. By measuring the concentration distribution of indoor pollutants, the propagation rule of the indoor pollutants is analyzed, and the personnel exposure level in the building and the performance of an environmental control system are further evaluated. In addition, many toxic and harmful chemical gases are colorless and odorless for industrial environments, particularly the chemical industry. When the leakage occurs, the alarm needs to be given in time, and the leakage source is accurately identified, so that the gas concentration distribution in the industrial factory building needs to be quickly and accurately measured. In a word, the measurement of the three-dimensional distribution of the gas phase concentration in the building space has important significance for improving the indoor environment of the residential building and ensuring the production safety of the industrial building.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a three-dimensional space gas concentration distribution measuring device can measure the gas concentration distribution who obtains the space automatically, rapidly.
In order to achieve the above object, the embodiments of the present invention adopt the following technical solutions:
an embodiment of the utility model provides a three-dimensional space gas concentration distribution measuring device, include: the device comprises a workbench, a driving mechanism, a scanning device, a sensor and a processor; the scanning device and the sensor are both arranged on the workbench, and the driving mechanism is used for driving the workbench and the sensor to rotate; the device also comprises an inclination angle measuring instrument which is arranged on the workbench and used for measuring the rotation angle of the workbench on a vertical surface; the processor is respectively connected with the driving mechanism, the scanning device, the sensor and the inclination measuring instrument.
As a further improvement of the embodiment of the present invention, the driving mechanism includes a vertical driving mechanism and a horizontal driving mechanism, and the vertical driving mechanism is connected to the worktable and drives the worktable to rotate on a vertical surface; the horizontal driving mechanism is connected with the sensor and drives the sensor to rotate on a first plane, and the first plane is parallel to the plane where the workbench is located.
As a further improvement of the embodiment of the present invention, the working platform includes a first platform and a second platform which are parallel to each other and arranged up and down, and a rotating shaft for connecting the first platform and the second platform; the vertical driving mechanism is connected with the rotating shaft and drives the rotating shaft to drive the first platform and the second platform to rotate on a vertical surface; the scanning device is mounted on the first platform, and the sensor is mounted on the second platform.
As a further improvement of the embodiment of the present invention, the scanning device is configured to measure a two-dimensional plane structure and send the measured two-dimensional plane structure to the processor; the sensor is used for measuring the light path integral concentration and sending the measured light path integral concentration to the processor; the processor is used for sending a rotation signal to the driving mechanism, receiving the two-dimensional plane structure sent by the scanning device and the light path integral concentration sent by the sensor, and calculating to obtain the gas concentration distribution in the three-dimensional space according to the two-dimensional plane structure and the light path integral concentration.
As a further improvement of the embodiment of the present invention, the scanning device is a rotatable laser radar.
As a further improvement of the embodiment of the present invention, the sensor is a tunable diode laser absorption spectrum sensor.
As a further improvement of the embodiment of the present invention, the laser wavelength tuning range of the tunable diode laser absorption spectrum sensor is 780nm to 2526 nm.
The embodiment of the utility model provides a three-dimensional space gas concentration distribution measuring device can measure automatically, rapidly and obtain space ground gas concentration distribution. The embodiment of the utility model provides a combine the treater, be used for driving workstation and sensor pivoted actuating mechanism, be used for measuring two-dimensional planar structure's scanning device and be used for measuring the sensor of light path integral concentration, can carry out automatic fault measurement to three-dimensional space, obtain every planar two-dimensional planar structure of fault and light path integral concentration after, use the chromatography algorithm reconsitution to obtain the planar concentration distribution of fault to further obtain three-dimensional space's gas concentration distribution. Compared with the traditional gas sensor, the gas sensor does not need to arrange a large number of sensors to intervene in the space for measurement, simplifies the measurement process, and greatly improves the measurement speed and efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a three-dimensional space gas concentration distribution measuring device provided by the embodiment of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, the embodiments obtained in advance by the ordinary skilled person without creative work shall belong to the protection scope of the present invention.
The embodiment of the utility model provides a three-dimensional space gas concentration distribution measuring device, as shown in fig. 1, the device includes workstation, actuating mechanism, scanning device 3, sensor 4 and treater. Scanning device 3 and sensor 4 are all installed on the workstation, actuating mechanism is used for driving the workstation with sensor 4 rotates. The device also comprises an inclination angle measuring instrument, and the inclination angle measuring instrument is arranged on the workbench. The processor is respectively connected with the driving mechanism, the scanning device 3, the sensor 4 and the inclinometer.
In the above embodiment, the scanning device 3 is configured to measure a planar two-dimensional planar structure, the sensor 4 is configured to measure a planar light path integrated concentration, and the processor is configured to control the driving mechanism to drive the workbench and the sensor 4 to rotate, receive data of the planar two-dimensional planar structure measured by the scanning device 3 and data of the light path integrated concentration measured by the sensor 4, and process the data to obtain gas concentration distribution data in a three-dimensional space. Preferably, the processor is an STM32F4 chip available from ARM corporation. The dip angle measuring instrument is used for measuring the rotating angle of the workbench on a vertical surface, namely the included angle between a measured plane and a preset plane, the measured data are sent to the processor, and the processor can control the driving mechanism to drive the rotating angle of the workbench according to the measured data, so that the measurement is carried out according to the preset rotating angle, and the measurement accuracy is improved.
The three-dimensional space gas concentration distribution measuring device of the embodiment combines the processor, the driving mechanism for driving the workbench and the sensor to rotate, the scanning device 3 for measuring the two-dimensional plane structure and the sensor 4 for measuring the light path integral concentration, can perform automatic tomography measurement on the three-dimensional space, and reconstructs the concentration distribution of the fault plane by using a tomography algorithm after obtaining the fault structure and the light path integral concentration of each fault plane, thereby further obtaining the gas concentration distribution of the three-dimensional space. Compared with the traditional measurement by using a gas sensor, the method has the advantages that a large number of sensors are not required to be arranged to intervene in the space for measurement, the measurement process is simplified, and the measurement speed and efficiency are greatly improved.
As a preferred example, the driving mechanism includes a vertical driving mechanism and a horizontal driving mechanism 22, and the vertical driving mechanism is connected to the worktable and drives the worktable to rotate on a vertical surface; the horizontal driving mechanism 22 is connected to the sensor 4, and drives the sensor 4 to rotate on a first plane, which is parallel to the plane where the worktable is located. Wherein, vertical actuating mechanism and horizontal drive structure all can be the motor.
In the above embodiment, the vertical driving mechanism drives the workbench to rotate on the vertical surface, that is, the scanning device 3 and the sensor 4 are driven to rotate on the vertical surface, and after the included angle between the plane where the workbench is located and the preset plane is adjusted, the scanning device 3 rotates for a circle on the plane parallel to the plane where the workbench is located, and the two-dimensional plane structure of the plane can be measured. The horizontal driving mechanism 22 drives the sensor 4 to rotate on a plane parallel to the plane where the worktable is located, and the light path integral concentration of the plane can be measured and obtained by rotating for a circle, so that a two-dimensional plane structure and the light path integral concentration of a fault plane are obtained. The included angle between the plane where the workbench is located and the preset plane is adjusted through the driving mechanism, the two-dimensional plane structure and the light path integral concentration of each fault plane of the three-dimensional space can be sequentially obtained, and the fault measurement of the three-dimensional space is realized.
As a preferred example, the working platform comprises a first platform 11 and a second platform 12 which are parallel to each other and arranged up and down, and a rotating shaft 13 for connecting the first platform 11 and the second platform 12; the vertical driving mechanism is connected with the rotating shaft 13, and drives the rotating shaft 13 to drive the first platform 11 and the second platform 12 to rotate on a vertical plane; the scanning device 3 is mounted on the first platform 11 and the sensor 4 is mounted on the second platform 12. In this embodiment, the workstation is the U type, and scanning device 3 and sensor 4 install respectively on the platform of parallel from top to bottom for scanning device 3 and sensor 4 can not shelter from each other and disturb when carrying out the scanning survey, can carry out the measurement of the gaseous integral concentration of two-dimensional planar structure and the light path of same fault plane simultaneously, reduce and measure the number of times, improve measurement of efficiency.
Preferably, the scanning device 3 is a rotatable laser radar. The two-dimensional plane structure is measured by using the rotatable laser radar, and a mechanism for driving the laser radar to rotate is not required to be additionally arranged, so that the whole device is simple in structure, the two-dimensional plane structure is measured by the laser radar, and the measurement accuracy is high.
As a preferred example, the sensor 4 is a tunable diode laser absorption spectrum sensor. The tunable diode laser absorption spectrum sensor is used for measuring the light path integral concentration, and compared with a real-time optical sensor combined with a reflecting lens, the light path integral concentration measuring device can scan more quickly without adjusting the reflecting lens and can obtain the light path integral concentration with higher accuracy.
As a preferable example, the laser wavelength tuning range of the tunable diode laser absorption spectrum sensor is 780nm to 2526 nm. By adjusting the laser wavelength, the concentration profiles of different gases can be measured. In the embodiment, the laser wavelength is adjusted to 1572.3nm, and the method can be used for measuring the carbon dioxide concentration distribution. The laser wavelength is adjusted to 1665.4nm, and the method can be used for measuring the methane concentration distribution.
The three-dimensional space gas concentration distribution measuring device of the above embodiment operates as follows:
the three-dimensional space gas concentration distribution measuring device of the embodiment is placed in a building space to be measured, the initial plane where the workbench is located is a preset plane, and the preset plane can be parallel to the horizontal plane.
The three-dimensional space gas concentration distribution measuring device of the embodiment starts to work, the processor sends a vertical rotation signal to the vertical driving mechanism, and the vertical driving mechanism drives the workbench to drive the laser radar and the tunable diode laser absorption spectrum sensor to rotate on a vertical surface for a vertical preset angle.
The processor sends a measurement signal to the tunable diode laser absorption spectrum sensor, the tunable diode laser absorption spectrum sensor measures to obtain the gas integral concentration of the first light path, and the measurement data are sent to the processor. The processor sends a horizontal rotation signal to the horizontal driving mechanism, and the horizontal driving mechanism drives the tunable diode laser absorption spectrum sensor to rotate by a horizontal preset angle on a plane parallel to the plane where the workbench is located. And the processor sends a measurement signal to the tunable diode laser absorption spectrum sensor, and the tunable diode laser absorption spectrum sensor measures to obtain the gas integral concentration of the second light path and sends the measurement data to the processor. And the processor sends a horizontal rotation signal to the horizontal driving mechanism until the tunable diode laser absorption spectrum sensor rotates by M degrees on a plane parallel to the plane where the workbench is positioned. The processor thereby obtains the optical path gas integrated concentration for the first fault plane.
And the processor transmits a measurement signal to the laser radar, the laser radar rotates and measures on a plane parallel to the plane where the workbench is located, and the measurement data is transmitted to the processor until the laser radar rotates by P degrees on the plane parallel to the plane where the workbench is located. The processor thus obtains a two-dimensional planar structure of the first fault plane.
And the processor sends a vertical rotation signal to the vertical driving mechanism until the vertical driving mechanism drives the workbench to drive the laser radar and the tunable diode laser absorption spectrum sensor to rotate by Q degrees on a vertical surface. The processor thus obtains a two-dimensional planar structure of multiple fault planes and an optical path gas integrated concentration.
And the processor calculates the grid concentration of each fault plane by using a chromatography reconstruction algorithm according to the two-dimensional plane structure and the light path gas integral concentration of each fault plane. And finally, according to the included angle between each fault plane and the horizontal plane, performing coordinate conversion between each fault plane and the three-dimensional space, thereby obtaining the gas concentration distribution of the three-dimensional space.
The three-dimensional space gas concentration distribution measuring device is different in installation position in a building space, and the values of P and Q are different. For example, when the three-dimensional space gas concentration distribution measuring device is installed on one wall of a building space, P is 180, and Q is 180; when the three-dimensional space gas concentration distribution measuring device is arranged at the junction of two walls of a building space, P is 180, and Q is 90; when the three-dimensional space gas concentration distribution measuring device is installed at the junction of three walls of a building space, P is 90, and Q is 90. Preferably, the three-dimensional space gas concentration distribution measuring device of the embodiment is installed at the junction of three walls of a building space, the number of measured fault planes is small, the rotating angle range of the workbench and the sensor is small, the number of measurement times is small, the whole three-dimensional space gas concentration distribution measurement can be rapidly completed, the measurement efficiency is improved, errors caused by multiple measurements are reduced, and the measurement accuracy is improved.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A three-dimensional space gas concentration distribution measuring apparatus, comprising: the device comprises a workbench, a driving mechanism, a scanning device (3), a sensor (4) and a processor; the scanning device (3) and the sensor (4) are both arranged on the workbench, and the driving mechanism is used for driving the workbench and the sensor (4) to rotate; the inclination angle measuring device is arranged on the workbench and used for measuring the rotation angle of the workbench; the processor is respectively connected with the driving mechanism, the scanning device (3), the sensor (4) and the inclination measuring instrument.
2. The three-dimensional space gas concentration distribution measuring device according to claim 1, wherein the driving mechanism comprises a vertical driving mechanism and a horizontal driving mechanism (22), the vertical driving mechanism is connected with the worktable and drives the worktable to rotate on a vertical surface; the horizontal driving mechanism (22) is connected with the sensor (4) and drives the sensor (4) to rotate on a first plane, and the first plane is parallel to the plane where the workbench is located.
3. The three-dimensional space gas concentration distribution measuring apparatus according to claim 2, wherein the table comprises a first platform (11) and a second platform (12) arranged in parallel one above the other, and a rotating shaft (13) for connecting the first platform (11) and the second platform (12); the vertical driving mechanism is connected with the rotating shaft (13), and drives the rotating shaft (13) to drive the first platform (11) and the second platform (12) to rotate on a vertical plane; the scanning device (3) is mounted on the first platform (11) and the sensor (4) is mounted on the second platform (12).
4. The three-dimensional space gas concentration distribution measuring device according to claim 1, wherein the scanning device (3) is a rotatable lidar.
5. The three-dimensional spatial gas concentration distribution measuring device according to claim 1, wherein the sensor (4) is a tunable diode laser absorption spectroscopy sensor.
6. The three-dimensional space gas concentration distribution measuring device according to claim 5, wherein the laser wavelength tuning range of the tunable diode laser absorption spectrum sensor is 780nm to 2526 nm.
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| CN202020160722.4U CN211576943U (en) | 2020-02-11 | 2020-02-11 | Three-dimensional space gas concentration distribution measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112215950A (en) * | 2020-10-19 | 2021-01-12 | 陈雨轩 | Three-dimensional reconstruction method for indoor toxic and harmful gas concentration |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112215950A (en) * | 2020-10-19 | 2021-01-12 | 陈雨轩 | Three-dimensional reconstruction method for indoor toxic and harmful gas concentration |
| CN112215950B (en) * | 2020-10-19 | 2024-02-06 | 陈雨轩 | Three-dimensional reconstruction method for indoor toxic and harmful gas concentration |
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