CN111855610A - Two-dimensional gas detection device and three-dimensional gas detection device - Google Patents
Two-dimensional gas detection device and three-dimensional gas detection device Download PDFInfo
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- CN111855610A CN111855610A CN202010613539.XA CN202010613539A CN111855610A CN 111855610 A CN111855610 A CN 111855610A CN 202010613539 A CN202010613539 A CN 202010613539A CN 111855610 A CN111855610 A CN 111855610A
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Abstract
The invention discloses a two-dimensional gas detection device and a three-dimensional gas detection device, wherein the two-dimensional gas detection device comprises a multi-channel gas chamber, a laser assembly and a detector assembly, wherein the multi-channel gas chamber is provided with an upper side wall, a lower side wall, a left side wall and a right side wall; the laser assembly comprises a plurality of upper lasers and left lasers, each upper laser is uniformly arranged on the upper side wall, and each left laser is uniformly arranged on the left side wall; the detector assembly includes a plurality of lower detectors and a right detector. The invention has the beneficial effects that: through distributing each laser instrument and detector array, constitute and survey the area array, survey each light path in the area array and all can realize independent receiving and dispatching to everywhere gas concentration in the detectable multichannel gas chamber, and information such as the diffusion direction, speed, the gas concentration distribution of detectable await measuring gas, through connecting two-dimentional gas detection device on triaxial manipulator, thereby enlarged detection range, and can make the testing result more accurate.
Description
Technical Field
The invention relates to the technical field of gas detection, in particular to a two-dimensional gas detection device and a three-dimensional gas detection device.
Background
The gas sensing technology based on the TDLAS principle is a novel technology with wide development prospect. The principle is as follows: each gas molecule has its own characteristic absorption spectrum, so when the laser beam emitted by the laser passes through the gas absorption cell containing the gas to be detected, the concentration of the gas to be detected can be obtained by demodulating the laser beam received by the detector.
Conventional gaseous detection device of spectrum absorption type includes gaseous absorption cell, laser instrument and detector, and the laser instrument is used for kicking into laser beam in to gaseous absorption cell, and this laser beam is detected by the detector behind the gaseous absorption cell, thereby obtains the concentration of the gas that awaits measuring through demodulating the laser beam that the detector received. However, such a conventional gas detection device has a relatively single function, and cannot obtain information such as the diffusion direction, velocity, and gas concentration distribution of the gas to be measured.
Disclosure of Invention
In view of the above, it is desirable to provide a gas detection apparatus capable of measuring information such as diffusion direction, velocity, gas concentration distribution, and the like of a gas to be measured.
In a first aspect, the present invention provides a two-dimensional gas detection apparatus comprising: a multi-channel gas cell, a laser assembly and a detector assembly,
The multi-channel air chamber is provided with an absorption cavity with an upward opening, and the multi-channel air chamber is provided with an upper side wall, a lower side wall, a left side wall and a right side wall, wherein the upper side wall is opposite to the lower side wall, and the left side wall is opposite to the right side wall;
the laser assembly comprises a plurality of upper lasers and left lasers, the upper lasers are used for emitting laser beams into the absorption cavity, the upper lasers are uniformly arranged on the upper side wall, and the left lasers are uniformly arranged on the left side wall;
the detector assembly comprises a plurality of lower detectors and a plurality of right detectors, the lower detectors correspond to the upper lasers one by one, and each lower detector is arranged opposite to the corresponding upper laser; the right detectors correspond to the left lasers one by one, and each right detector is arranged opposite to the corresponding left laser.
In a second aspect, the invention further provides a three-dimensional gas detection device, which comprises a three-axis manipulator and the two-dimensional gas detection device provided by the invention,
the three-axis manipulator is provided with a moving mechanism which can move along the directions of XYZ axes;
and the two-dimensional gas detection device is fixedly connected with the moving mechanism.
Compared with the prior art, the technical scheme provided by the invention has the beneficial effects that: through distributing each laser instrument and detector array, constitute and survey the area array, each light path in surveying the area array all can realize independent receiving and dispatching, thereby the gaseous concentration everywhere in the detectable multichannel gas chamber, and the detectable awaits measuring information such as gaseous diffusion direction, speed, gas concentration distribution, through connecting two-dimentional gas detection device on triaxial manipulator, thereby can make this device detect the concentration distribution of the gas that awaits measuring in three-dimensional space, the detection range has been enlarged, and can make the testing result more accurate.
Drawings
FIG. 1 is a schematic perspective view of a two-dimensional gas detection device according to an embodiment of the present invention;
FIG. 2 is a top view of the two-dimensional gas detection device of FIG. 1;
FIG. 3 is an optical path diagram of the two-dimensional gas sensing device of FIG. 1 during operation;
FIG. 4 is a schematic perspective view of an embodiment of a three-dimensional gas detection device provided by the present invention;
FIG. 5 is a schematic perspective view of the three-axis robot of FIG. 4;
in the figure: the device comprises a 1-two-dimensional gas detection device, an 11-multichannel gas chamber, a 111-upper side wall, a 112-lower side wall, a 113-left side wall, a 114-right side wall, a 115-through hole, a 121-upper laser, a 122-lower laser, a 123-left laser, a 124-right laser, a 131-upper detector, a 132-lower detector, a 133-left detector, a 134-right detector, a 2-three-axis manipulator, a 21-support, a 22-X axis guide rail, a 23-Y axis guide rail, a 24-Z axis guide rail and a 25-sliding rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
Referring to fig. 1 and 2, the present invention provides a two-dimensional gas detection device 1, which includes a multi-channel gas chamber 11, a laser assembly, and a detector assembly.
Referring to fig. 1 and 2, the multi-channel gas cell 11 has an absorption cavity opening upward, the multi-channel gas cell 11 has an upper sidewall 111, a lower sidewall 112, a left sidewall 113 and a right sidewall 114, the upper sidewall 111 is disposed opposite to the lower sidewall 112, and the left sidewall 113 is disposed opposite to the right sidewall 114.
Referring to fig. 1 and 2, the laser assembly includes a plurality of upper lasers 121 and left lasers 123 for emitting laser beams into the absorption cavity, each of the upper lasers 121 is uniformly disposed on the upper sidewall 111, and each of the left lasers 123 is uniformly disposed on the left sidewall 113.
Referring to fig. 1 and 2, the detector assembly includes a plurality of lower detectors 132 and right detectors 134, the lower detectors 132 correspond to the upper lasers 121 one by one, and each of the lower detectors 132 is disposed opposite to the corresponding upper laser 121; the right detectors 134 correspond to the left lasers 123 one by one, and each right detector 134 is arranged opposite to the corresponding left laser 123.
When the two-dimensional gas detection device 1 provided by the invention is used, the two-dimensional gas detection device 1 is placed in a space containing gas to be detected, laser beams with the same wavelength are injected into the absorption cavity through the upper laser 121 and the left laser 123, and are received by the lower detector 132 and the right detector 134 respectively. The two-dimensional gas detection device 1 can detect the gas concentration at each position in the multi-channel gas chamber 11 due to the multi-emission and multi-reception sampling structure on the two-dimensional plane, thereby detecting the information such as the diffusion direction, the speed, the gas concentration distribution and the like of the gas to be detected. Further, by outputting laser beams of different wavelengths from the upper laser 121 and the left laser 123, the present apparatus can detect the concentrations of a plurality of gases.
Further, referring to fig. 1-3, the laser assembly further includes a plurality of lower lasers 122 and right lasers 124 for injecting laser beams into the absorption cavity, each of the lower lasers 122 is uniformly arranged on the lower sidewall 112, and the lower lasers 122 and the lower detectors 132 are staggered; each of the right lasers 124 is uniformly arranged on the right sidewall 114, and the right lasers 124 and the right detectors 134 are staggered; the detector assembly further comprises a plurality of upper detectors 131 and left detectors 133, the upper detectors 131 correspond to the lower lasers 122 one by one, each upper detector 131 is arranged opposite to the corresponding lower laser 122, and the upper detectors 131 and the upper lasers 121 are arranged in a staggered manner; the left detectors 133 correspond to the right lasers 124 one by one, each left detector 133 is arranged opposite to the corresponding right laser 124, and the left detectors 133 and the left lasers 123 are arranged in a staggered manner. Because the volume of the laser is larger than that of the detector, the structure of the device can be more compact by arranging the laser components and the detector components in a staggered way.
Preferably, referring to fig. 1 and 2, the bottom wall of the multi-channel gas chamber 11 is provided with a through hole 115, and the through hole 115 can reduce the weight of the device, reduce the production cost, and facilitate the diffusion of the gas into the gas chamber 11.
Specifically, referring to fig. 1 and 2, the number of the upper lasers 121 is 3, the number of the lower lasers 122 is 2, the number of the left lasers 123 is 3, the number of the right lasers 124 is 2, the number of the upper detectors 131 is 2, the number of the lower detectors 132 is 3, the number of the left detectors 133 is 2, and the number of the right detectors 134 is 3.
Example 2
Referring to fig. 4, the present invention further provides a three-dimensional gas detection device, including a three-axis robot 2 and a two-dimensional gas detection device 1, wherein the three-axis robot 2 has a moving mechanism, and the moving mechanism can move along XYZ axes; the two-dimensional gas detection device 1 is fixedly connected with the moving mechanism. When the device is used, the two-dimensional gas detection device 1 moves in a three-dimensional space containing gas to be detected through the three-axis manipulator 2, so that the device can detect the concentration distribution of the gas to be detected in the three-dimensional space, the detection range is expanded, and the detection result is more accurate.
Preferably, referring to fig. 4 and 5, the three-axis robot 2 includes a support 21, an X-axis guide 22, a Y-axis guide 23, a Z-axis guide 24, a slide bar 25, an X-axis driving device, a Y-axis driving device, and a Z-axis driving device. The X-axis guide rail 22 is fixed on the bracket 21 and extends along the horizontal direction; the Y-axis guide rail 23 is connected to the X-axis guide rail 22 in a sliding manner and can slide along the X-axis guide rail 22, and the Y-axis guide rail 23 extends in the horizontal direction and is perpendicular to the X-axis guide rail 22; the Z-axis guide rail 24 is slidably connected to the Y-axis guide rail 23 and can slide along the Y-axis guide rail 23, and the Z-axis guide rail 24 extends in the vertical direction; the slide bar 25 is slidably connected to the Z-axis guide rail 24 and can slide along the Z-axis guide rail 24, and the two-dimensional gas detection device 1 is fixed on the slide bar 25; the X-axis driving device is connected with the Y-axis guide rail 23 and is used for driving the Y-axis guide rail 23 to slide along the X-axis guide rail 22; the Y-axis driving device is connected with the Z-axis guide rail 24 and is used for driving the Z-axis guide rail 24 to slide along the Y-axis guide rail 23; the Z-axis driving device is connected with the slide bar 25 and is used for driving the slide bar 25 to slide along the Z-axis guide rail 24.
Specifically, referring to fig. 4 and 5, the X-axis driving device is an X-axis cylinder, an output shaft of the X-axis cylinder is connected to the Y-axis guide rail 23, and the X-axis cylinder is used for driving the Y-axis guide rail 23 to slide along the X-axis guide rail 22.
Specifically, referring to fig. 4 and 5, the Y-axis driving device is a Y-axis cylinder, an output shaft of the Y-axis cylinder is connected to the Z-axis guide rail 24, and the Y-axis cylinder is used for driving the Z-axis guide rail 24 to slide along the Y-axis guide rail 23.
Specifically, referring to fig. 4 and 5, the Z-axis driving device is a Z-axis cylinder, an output shaft of the Z-axis cylinder is connected to the sliding rod 25, and the Z-axis cylinder is used for driving the sliding rod 25 to slide along the Z-axis guide rail 24.
For better understanding of the present invention, the operation of the three-dimensional gas detection device provided by the present invention is described in detail below with reference to fig. 1 to 5: when the three-dimensional gas detection device is used, the three-dimensional gas detection device is placed in a space containing gas to be detected, laser beams with the same wavelength are emitted into the absorption cavity through the upper laser 121, the lower laser 122, the left laser 123 and the right laser 124, and are received by the lower detector 132, the upper detector 131, the right detector 134 and the left detector 133 respectively. Therefore, the gas concentration at each position in the multi-channel gas chamber 11 can be detected, and the information of the diffusion direction, the diffusion speed, the gas concentration distribution and the like of the gas to be detected can be detected. The two-dimensional gas detection device 1 is moved in a three-dimensional space containing a gas to be detected by the three-axis manipulator 2, so that the device can detect the concentration distribution of the gas to be detected in the three-dimensional space. Further, by outputting laser beams of different wavelengths from the upper laser 121, the lower laser 122, the left laser 123, and the right laser 124, the present apparatus can detect the concentrations of a plurality of gases.
In summary, the two-dimensional gas detection device provided by the invention forms a detection area array by distributing each laser and detector array, each light path in the detection area array can realize independent transceiving, so that the concentration of gas at each position in the multi-channel gas chamber 11 can be detected, and information such as diffusion direction, speed, gas concentration distribution and the like of gas to be detected can be detected, and the two-dimensional gas detection device is connected to the three-axis manipulator 2, so that the device can detect the concentration distribution of the gas to be detected in a three-dimensional space, the detection range is expanded, and the detection result is more accurate.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. A two-dimensional gas detection device, comprising: a multi-channel gas cell, a laser assembly and a detector assembly,
the multi-channel air chamber is provided with an absorption cavity with an upward opening, and the multi-channel air chamber is provided with an upper side wall, a lower side wall, a left side wall and a right side wall, wherein the upper side wall is opposite to the lower side wall, and the left side wall is opposite to the right side wall;
The laser assembly comprises a plurality of upper lasers and left lasers, the upper lasers are used for emitting laser beams into the absorption cavity, the upper lasers are uniformly arranged on the upper side wall, and the left lasers are uniformly arranged on the left side wall;
the detector assembly comprises a plurality of lower detectors and a plurality of right detectors, the lower detectors correspond to the upper lasers one by one, and each lower detector is arranged opposite to the corresponding upper laser; the right detectors correspond to the left lasers one by one, and each right detector is arranged opposite to the corresponding left laser.
2. A two-dimensional gas sensing device according to claim 1, wherein said laser assembly further comprises a plurality of lower and right lasers for emitting laser beams into said absorption cavity, each of said lower lasers being uniformly disposed on said lower sidewall, said lower lasers being staggered with respect to said lower detectors; the right lasers are uniformly arranged on the right side wall, and the right lasers and the right detector are arranged in a staggered mode;
the detector assembly further comprises a plurality of upper detectors and a plurality of left detectors, the upper detectors correspond to the lower lasers one by one, each upper detector is arranged opposite to the corresponding lower laser, and the upper detectors and the upper lasers are arranged in a staggered mode; the left detectors correspond to the right lasers one by one, each left detector is arranged opposite to the corresponding right laser, and the left detectors and the left lasers are arranged in a staggered mode.
3. The two-dimensional gas detection device according to claim 1, wherein the bottom wall of the multi-channel gas chamber is provided with through holes.
4. A two-dimensional gas sensing device as recited in claim 2, wherein the number of upper lasers is 3, the number of lower lasers is 2, the number of left lasers is 3, the number of right lasers is 2, the number of upper detectors is 2, the number of lower detectors is 3, the number of left detectors is 2, and the number of right detectors is 3.
5. A three-dimensional gas detection apparatus comprising a three-axis robot and the two-dimensional gas detection apparatus of any one of claims 1 to 4,
the three-axis manipulator is provided with a moving mechanism which can move along the directions of XYZ axes;
and the two-dimensional gas detection device is fixedly connected with the moving mechanism.
6. The three-dimensional gas detection device according to claim 5, wherein said three-axis robot comprises a support, an X-axis guide, a Y-axis guide, a Z-axis guide, a slide bar, an X-axis drive, a Y-axis drive, and a Z-axis drive,
the X-axis guide rail is fixed on the bracket and extends along the horizontal direction;
The Y-axis guide rail is connected to the X-axis guide rail in a sliding manner and can slide along the X-axis guide rail, and the Y-axis guide rail extends along the horizontal direction and is vertical to the X-axis guide rail;
the Z-axis guide rail is connected to the Y-axis guide rail in a sliding manner and can slide along the Y-axis guide rail, and the Z-axis guide rail extends along the vertical direction;
the sliding rod is connected to the Z-axis guide rail in a sliding mode and can slide along the Z-axis guide rail, and the two-dimensional gas detection device is fixed on the sliding rod;
the X-axis driving device is connected with the Y-axis guide rail and is used for driving the Y-axis guide rail to slide along the X-axis guide rail;
the Y-axis driving device is connected with the Z-axis guide rail and is used for driving the Z-axis guide rail to slide along the Y-axis guide rail;
the Z-axis driving device is connected with the sliding rod and is used for driving the sliding rod to slide along the Z-axis guide rail.
7. The three-dimensional gas detection device according to claim 6, wherein the X-axis driving device is an X-axis cylinder, an output shaft of the X-axis cylinder is connected with the Y-axis guide rail, and the X-axis cylinder is used for driving the Y-axis guide rail to slide along the X-axis guide rail.
8. The three-dimensional gas detection device according to claim 6, wherein the Y-axis driving device is a Y-axis cylinder, an output shaft of the Y-axis cylinder is connected with the Z-axis guide rail, and the Y-axis cylinder is used for driving the Z-axis guide rail to slide along the Y-axis guide rail.
9. The three-dimensional gas detection device according to claim 6, wherein the Z-axis driving device is a Z-axis cylinder, an output shaft of the Z-axis cylinder is connected with the slide bar, and the Z-axis cylinder is used for driving the slide bar to slide along the Z-axis guide rail.
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| CN202010613539.XA CN111855610A (en) | 2020-06-30 | 2020-06-30 | Two-dimensional gas detection device and three-dimensional gas detection device |
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| CN202010613539.XA CN111855610A (en) | 2020-06-30 | 2020-06-30 | Two-dimensional gas detection device and three-dimensional gas detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114965319A (en) * | 2022-05-31 | 2022-08-30 | 四川大学 | Gas parameter multidimensional detection system and measurement method based on absorption spectrum |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114965319A (en) * | 2022-05-31 | 2022-08-30 | 四川大学 | Gas parameter multidimensional detection system and measurement method based on absorption spectrum |
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