CN110068524B - Atmospheric particulate lead-containing and isotope detection system thereof - Google Patents
Atmospheric particulate lead-containing and isotope detection system thereof Download PDFInfo
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- CN110068524B CN110068524B CN201910475963.XA CN201910475963A CN110068524B CN 110068524 B CN110068524 B CN 110068524B CN 201910475963 A CN201910475963 A CN 201910475963A CN 110068524 B CN110068524 B CN 110068524B
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- 238000001514 detection method Methods 0.000 title claims abstract description 127
- 239000000523 sample Substances 0.000 claims abstract description 226
- 238000001228 spectrum Methods 0.000 claims abstract description 47
- 239000000443 aerosol Substances 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 12
- 238000001819 mass spectrum Methods 0.000 claims abstract description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000012216 screening Methods 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002536 laser-induced breakdown spectroscopy Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004949 mass spectrometry Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
Abstract
The invention discloses a system for detecting lead and isotopes of atmospheric particulate matters, which comprises a gas collection module, a gas detection module and a sample conveying unit, wherein the gas collection module is connected with the gas detection module; the gas collection module comprises an unmanned aerial vehicle and a base; the unmanned aerial vehicle comprises an exhaust pipe, an unmanned aerial vehicle sample channel and a fan; the sample delivery unit includes a gas sample container; the base comprises a base body with a base body sample channel; the conveying pipeline is fixedly arranged below the seat body; the gas detection module comprises a laser irradiation device, a laser receiving unit, a spectrum analyzer, a mass spectrometer probe and a single-particle mass spectrometer for measuring aerosol; when the gas sample container moves to the detection section, the laser irradiation device emits laser, and after the laser acts on the gas, the spectrum analyzer receives the spectrum and analyzes the spectrum to obtain a detection result of the gas; the probe of the mass spectrometer extends into the gas sample container, and the detected data is transmitted to a single-particle mass spectrometer for measuring aerosol to obtain a mass spectrum detection result of the gas. The invention has the advantages of accuracy, rapidness and the like.
Description
Technical Field
The invention belongs to the field of environment detection, and relates to a gas detection system, in particular to a system for detecting lead and isotopes of atmospheric particulate matters.
Background
At present, most of the detection of the lead and the isotopes of the atmospheric particulate matters require artificial collection or other collection methods, and the long-time artificial collection work can influence the human health of collection personnel and has great harm. In addition, the methods such as manual collection are not accurate enough when collecting the gas sample, and the original gas in the collection container or the conveying equipment is easy to mix, so that the error of the gas detection result is larger, and the accurate and precise gas performance detection result cannot be obtained. In addition, the methods such as manual collection and the like cannot realize real-time detection of data, most of the methods need to be uniformly sent to a detection device for monitoring after a large number of samples are collected, the whole process is long in time consumption, real-time performance data of gas cannot be obtained, and due to the fact that the gas mobility is large, the delayed result output greatly reduces subsequent applicability of gas detection results, for example, when pollution treatment work is carried out, the reference property of the gas detection results before a certain time is small, and the like.
Disclosure of Invention
The invention provides a system for detecting lead and isotopes in atmospheric particulate matters so as to overcome the defects in the prior art.
In order to achieve the above object, the present invention provides a system for detecting atmospheric particulate matters containing lead and isotopes thereof, comprising a gas collection module, a gas detection module and a sample conveying unit; the gas collection module comprises an unmanned aerial vehicle and a base; the unmanned aerial vehicle comprises a machine body, a plurality of wings, an exhaust pipe, an unmanned aerial vehicle sample channel and a fan, wherein the wings are arranged on the machine body and drive the unmanned aerial vehicle to fly; the top end of the exhaust pipe can be communicated with the outside; the unmanned aerial vehicle sample channel is vertically arranged in the machine body, the top end of the unmanned aerial vehicle sample channel is communicated with the bottom end of the exhaust pipe, and the fan is arranged at the top end of the unmanned aerial vehicle sample channel; the sample delivery unit comprises a gas sample container having openable top and bottom caps, the sidewalls of the gas sample container being transparent; the gas sample container is detachably arranged in the unmanned aerial vehicle sample channel and is positioned below the fan; the top end of the exhaust pipe, the top cover and the bottom cover of the gas sample container and the part of the unmanned aerial vehicle sample channel, which is positioned below the gas sample container, are opened, the fan rotates, gas continuously enters the gas sample container from the opening part of the unmanned aerial vehicle sample channel, then is exhausted upwards through the exhaust pipe, the top cover and the bottom cover of the gas sample container are closed, and gas collection is completed; the base comprises a base body, the base body is provided with a vertically arranged base body sample channel, the unmanned aerial vehicle is stopped on the base body, and the unmanned aerial vehicle sample channel is communicated with the base body sample channel; the sample conveying unit also comprises a conveying pipeline and a bracket; the conveying pipeline is fixedly arranged below the seat body, and the top end of the conveying pipeline is communicated with the seat body sample channel; the top end of the bracket is detachably connected with the gas sample container, the bracket stretches into the unmanned aerial vehicle sample channel, and after being connected with the gas sample container, the bracket can drive the gas sample container to pass through the seat body sample channel and move into the conveying pipeline; the conveying pipeline is provided with a detection section, and the pipe wall of the detection section is transparent; the gas detection module comprises a laser irradiation device, a laser receiving unit, a spectrum analyzer, a mass spectrometer probe and a single-particle mass spectrometer for measuring aerosol; the laser irradiation device and the laser receiving unit are respectively arranged at two opposite sides outside the detection section, when the gas sample container moves to the detection section, the laser irradiation device emits laser, and after the laser acts on the gas in the gas sample container, the laser is received by the laser receiving unit and forms a spectrum; the spectrum analyzer is connected with the laser receiving unit, receives the spectrum and analyzes and obtains the detection result of the gas; the mass spectrometer probe is connected with a single-particle mass spectrometer for measuring aerosol; the side wall of the gas sample container is provided with a detection hole which can be opened and closed; the mass spectrometer probe can open a detection hole, extend into the gas sample container, receive and detect the gas irradiated by the laser, and transmit the detected data to a single-particle mass spectrometer for measuring aerosol to obtain a mass spectrum detection result of the gas.
Further, the present invention provides a system for detecting lead and its isotopes in atmospheric particulate matters, which may further have the following features: wherein the gas detection module further comprises a detection ring; the detection ring is sleeved outside the detection section of the conveying pipeline, and the laser irradiation device and the laser receiving unit are both fixed on the detection ring and positioned at opposite positions on the detection ring; the detection ring rotates around the center of the detection ring and moves up and down, and the up and down movement range is from the top position of the gas sample container to the bottom position of the gas sample container.
Further, the present invention provides a system for detecting lead and its isotopes in atmospheric particulate matters, which may further have the following features: the laser receiving unit comprises a prism, a grating and a spectrum receiving device, wherein the prism is positioned between the conveying pipeline and the grating; the grating is provided with a plurality of grating sides which are connected in sequence; the grating side faces are opposite to the prisms, the gratings can rotate around the central lines among the grating side faces, and when the gratings rotate, the grating side faces are sequentially opposite to the prisms to receive and screen the spectrum decomposed by the prisms; the spectrum receiving device is arranged in the grating and used for receiving the spectrum screened by the side surface of the grating, and is connected with the spectrum analyzer to transmit the collected spectrum to the spectrum analyzer.
Further, the present invention provides a system for detecting lead and its isotopes in atmospheric particulate matters, which may further have the following features: the support comprises a disc and a rod body, and the disc is fixed at the top end of the rod body; the disc is detachably connected with the bottom cover of the gas sample container, and when the disc is connected with the bottom cover of the gas sample container, the rod body moves to drive the gas sample container to move up and down.
Further, the present invention provides a system for detecting lead and its isotopes in atmospheric particulate matters, which may further have the following features: wherein the gas detection module further comprises a baffle; the baffle is arranged outside the top end of the detection section and can move into the detection section through an opening on the pipe wall of the detection section; the disc of the bracket is matched and fit with the inner wall of the gas sample container; when the gas sample container is positioned in the detection section, the baffle plate moves into the detection section and is blocked at the upper end of the gas sample container, the bottom cover of the gas sample container is opened, the bracket moves upwards, and the gas in the gas sample container is compressed by the disc moving upwards.
Further, the present invention provides a system for detecting lead and its isotopes in atmospheric particulate matters, which may further have the following features: the unmanned aerial vehicle comprises a body, a central body and a lower body, wherein the body of the unmanned aerial vehicle is provided with the central body and the lower body which can be separated up and down, and the lower body is positioned below the central body; the unmanned aerial vehicle sample channel is divided into an upper channel section and a lower channel section which are respectively arranged in the middle machine body and the lower machine body; the gas sample container is detachably arranged in the upper channel section; the unmanned aerial vehicle further comprises a plurality of telescopic connecting rods, the upper ends of the connecting rods are fixed in the middle machine body, and the lower ends of the connecting rods are fixed in the lower machine body; the connecting rod stretches, the middle machine body is separated from the lower machine body, and gas can enter the unmanned aerial vehicle sample channel from a gap between the middle machine body and the lower machine body; the bottom of unmanned aerial vehicle still is equipped with openable and closed unmanned aerial vehicle bottom, and when unmanned aerial vehicle bottom was closed, unmanned aerial vehicle's bottom was sealed, and when opening, gaseous sample container can follow unmanned aerial vehicle sample channel and shift out.
Further, the present invention provides a system for detecting lead and its isotopes in atmospheric particulate matters, which may further have the following features: the base also comprises a base shell, and the top surface of the base shell is provided with an openable solar panel; the base is fixedly arranged in the base, is a charging module and can receive the converted electric energy collected by the solar panel; the top end of the seat body is provided with an annular charging plug which is arranged around the top end of the seat body sample channel; the bottom end of the unmanned aerial vehicle is provided with an annular charging slot which is arranged around the bottom end of the gas sample channel; the charging plug is inserted into the charging slot, and a seat body sample channel positioned in the center of the charging plug is communicated with an unmanned aerial vehicle sample channel in the center of the charging slot after the charging plug is inserted into the charging slot; the unmanned aerial vehicle flies into the base shell, when berthing on the pedestal, the charging plug on pedestal top inserts in the charging slot of unmanned aerial vehicle bottom, and the module of charging charges for unmanned aerial vehicle.
Further, the present invention provides a system for detecting lead and its isotopes in atmospheric particulate matters, which may further have the following features: the device also comprises a gas treatment unit; the gas treatment unit comprises an exhaust pipeline and an exhaust fan; one end of the exhaust pipeline is communicated with the side surface of the bottom end of the conveying pipeline, and the other end of the exhaust pipeline is communicated with the outside; the exhaust pipeline is L-shaped, and the exhaust fan is arranged at a turning position in the exhaust pipeline; when the gas sample container moves down to the bottom end of the conveying pipeline, the detection hole is opposite to the exhaust pipeline, the detection hole is opened, the exhaust fan rotates, and gas in the gas sample container is exhausted.
Further, the present invention provides a system for detecting lead and its isotopes in atmospheric particulate matters, which may further have the following features: also comprises a shell; the base shell is fixed at the upper end of the shell; the top end of the conveying pipeline stretches into the base shell, the top end of the conveying pipeline is communicated with the bottom end of the base sample channel, and the rest part of the conveying pipeline is vertically arranged in the shell.
The invention has the beneficial effects that: the invention provides a lead-containing and isotope detection system for atmospheric particulate matters, which is characterized in that a gas sample is collected through an unmanned aerial vehicle, and is stored and conveyed independently through a gas sample container, wherein the gas sample container is an independent space, so that the gas sample is completely isolated from the outside, and the problem of impurity of the sample caused by mixing of the gas sample and the gas in a pipeline when the gas is directly conveyed through the pipeline is solved. Secondly, after unmanned aerial vehicle gathers and accomplishes, gas sample container is carried to gas detection module and detects promptly, reduces the consumption of manpower and materials, can guarantee "freshness" of data again simultaneously. The gas detection module comprises spectrum analysis and mass spectrum analysis, the two detection modes are combined to obtain spectrum and mass spectrum two-dimensional information, and the analysis is carried out to obtain accurate component information of the atmospheric particulate matters, so that the atmospheric pollutants are comprehensively and accurately detected. The laser detection device further comprises a detection ring, and the laser irradiation device and the laser receiving unit which are opposite in position can be driven to rotate and move up and down, so that the gas in various conditions such as density and the like is fully bombarded, the accurate receiving of laser is realized, and the accuracy of a detection result is improved in multiple aspects. In addition, four grating sides are used for screening four isotopes of lead, and the pertinence is strong. The invention can realize automatic, convenient, rapid and more comprehensive detection of atmospheric pollutants and provide real-time data support for pollutant treatment.
Drawings
FIG. 1 is a schematic diagram of the structure of the base and upper housing of an atmospheric particulate lead and isotope detection system;
Fig. 2 is a schematic structural diagram of an unmanned aerial vehicle with atmospheric particulate lead and its isotope detection system;
FIG. 3 is a schematic view of the structure of a gas sample container;
fig. 4 is a schematic structural view of the separated state of the middle body and the lower body of the unmanned aerial vehicle;
FIG. 5 is a schematic diagram of a front view of a gas detection module;
FIG. 6 is a schematic top view of a gas detection module;
FIG. 7 is a schematic diagram of the structure of the gas detection module at different movement positions;
Fig. 8 is a schematic diagram of the structure of a unit for gas treatment.
Detailed Description
Specific embodiments of the present invention are described below with reference to the accompanying drawings.
The invention provides a system for detecting lead and isotopes of atmospheric particulate matters, which comprises a gas collection module, a gas detection module, a sample conveying unit and a gas processing unit.
As shown in fig. 1 and 2, the gas collection module includes a drone 11 and a base 12.
The drone 11 includes a body 111, a number of wings 112, an exhaust duct 113, fans 114, and a drone sample passage 115. The wing 112 is arranged on the body 111 and comprises a driving device which can drive the unmanned aerial vehicle 11 to fly.
An exhaust pipe 113 is provided in the body 111, and a top end thereof is communicable with the outside to exhaust gas. Preferably, as shown in fig. 2, the exhaust pipe 113 is vertically disposed in the upper portion 1111 of the machine body 111, and the top end has a cover 1131 that can be closed by lifting, and when the cover 1131 is lifted, the top end of the exhaust pipe 113 communicates with the outside, and after the cover 1131 is lifted, the top end of the exhaust pipe 113 is closed. The upper portion 1111 of the housing 111 is a battery or other integrated part.
The unmanned aerial vehicle sample channel 115 is vertically arranged in the machine body 111, and the top end is communicated with the bottom end of the exhaust pipe 113. A fan 114 is disposed at the top end of the unmanned aerial vehicle sample channel 115.
The sample delivery unit comprises a gas sample container 21. As shown in fig. 3, the gas sample container 21 is cylindrical in shape, having a top cover and a bottom cover that are openable. The sidewall of the gas sample container is transparent.
The gas sample container 21 is detachably disposed in the unmanned aerial vehicle sample channel 115 below the fan 114.
When the unmanned aerial vehicle 11 flies to collect a sample, the top end of the exhaust pipe 113, the top and bottom covers of the gas sample container 21, and the portion of the unmanned aerial vehicle sample passage 115 located below the gas sample container 21 are opened, the fan 114 rotates, and gas continuously enters the gas sample container 21 from the opened portion of the unmanned aerial vehicle sample passage 115 and is discharged upward through the exhaust pipe 113. The above process may be to empty the gas sample container 21 of the original gas and then introduce the newly collected other sample. Then, the top and bottom caps of the gas sample container 21 are closed, and the gas collection is completed. At this time, the unmanned aerial vehicle sample passage 115 and the exhaust pipe 113 are also closed, and the unmanned aerial vehicle 11 can continue to fly smoothly.
When a gas sample is collected, the drone sample channel 115 below the gas sample container 21 is open. Specifically, the body 111 of the unmanned aerial vehicle 11 has a middle body 1112 and a lower body 1113 that are separable up and down. The lower body 1113 is located below the middle body 1112. The middle body 1112 is fixedly located below the upper portion 1111 of the body 111.
The unmanned aerial vehicle sample channel 115 is divided into an upper channel section and a lower channel section, which are respectively arranged in the middle body 1112 and the lower body 1113. The gas sample container 21 is detachably arranged in the upper channel section.
The drone 11 also includes a number of telescoping connection rods 116. The upper end of the connecting rod 116 is fixed in the middle body 1112 and the lower end is fixed in the lower body 1113.
As shown in fig. 4, when collecting a gas sample, the connecting rod 116 is extended, the middle body 1112 is separated from the lower body 1113, and gas can enter the unmanned aerial vehicle sample channel 115 from a gap between the middle body 1112 and the lower body 1113 due to rotation of the fan 114, and then enter the gas sample container 21, so as to collect the gas. Compared with the mode of introducing gas from other positions (for example, the bottom end of the sample channel of the unmanned aerial vehicle), the separated mode of the body can enable the unmanned aerial vehicle to fly more stably.
Preferably, the bottom of the unmanned aerial vehicle 11 is further provided with an openable and closable unmanned aerial vehicle bottom cover 117, and when the unmanned aerial vehicle bottom cover 117 is closed, the bottom of the unmanned aerial vehicle 11 is sealed, and the sealing can enable the flight process of the unmanned aerial vehicle 11 to be more stable. When open, the gas sample container 21 may be removed from the drone sample channel 115.
The base 12 includes a seat 121. The center of the housing 121 has a housing sample passage 122 vertically disposed and penetrating up and down. The drone 11 may rest on the seat 121, with the drone sample channel 115 in communication with the seat sample channel 122.
Further, the base 12 also includes a base housing 123. The top surface of the base housing 123 has an openable solar panel. The base 121 is fixedly located in the base 12, and the base 121 is a charging module and can receive the converted electric energy collected by the solar panel. The top end of the housing 121 has an annular charging plug disposed around the top end of the housing sample channel 122.
The bottom end of the drone has an annular charging slot 118 disposed around the bottom end of the gas sample channel 115.
The charging slot 118 is matched with a charging plug, the charging plug can be inserted into the charging slot, and after the charging plug is inserted, the seat body sample channel 122 positioned in the center of the charging plug is communicated with the unmanned aerial vehicle sample channel 115 in the center of the charging slot 118. Unmanned aerial vehicle 11 flies into base shell 123, when berthing on pedestal 121, the charging plug on pedestal 121 top inserts in unmanned aerial vehicle 11 bottom's the slot 118 that charges, and the module that charges for unmanned aerial vehicle.
The sample delivery unit further comprises a delivery conduit 22 and a holder 23.
The conveying pipe 22 is fixedly positioned below the seat body 121. The top end of the delivery conduit 22 communicates with the housing sample channel 122.
The tip of the holder 23 is detachably connected to the gas sample container 21. The cross sections of the unmanned plane sample channel 115, the seat body sample channel 122 and the conveying pipeline 22 are all round, and the inner diameters are equal and are connected in a one-to-one opposite mode, so that an integral channel is formed. The bracket 23 extends into the unmanned aerial vehicle sample channel 115, and after being connected with the gas sample container 21, the bracket can drive the gas sample container 21 to pass through the seat body sample channel 122 and move into the conveying pipeline 22.
As shown in fig. 5, the delivery conduit 22 has a detection section 221. The tube wall of the detection section 221 is transparent.
The gas detection module includes a laser generating device 34, a laser irradiation device 31, a laser receiving unit 32, and a spectrum analyzer 33. The laser irradiation device 31 and the laser receiving unit 32 are provided on opposite sides outside the detection section 221, respectively. The laser generator 34 is connected to the laser irradiation device 31. When the gas sample container 21 moves to the detection section 221, the laser generator 34 generates laser light, the laser light is emitted from the laser irradiation device 31, and the laser light acts on the gas in the gas sample container 21, and is received by the laser light receiving unit 32 to form a spectrum. The spectrum analyzer 33 is connected to the laser receiving unit 32, and the spectrum analyzer 33 receives the spectrum and analyzes the detection result of the obtained gas.
Further, as shown in fig. 5-7, the gas detection module also includes a detection ring 35.
The detection ring 35 is sleeved outside the detection section 221 of the conveying pipeline 22, and the conveying pipeline 22 is positioned at the center. The laser irradiation device 31 and the laser receiving unit 32 are both fixed to the detection ring 35 at opposite positions on the detection ring 35. The detection ring 35 rotates around its center while moving up and down in a range from the top position of the gas sample container 21 to the bottom position of the gas sample container 21.
The laser irradiation device 31 and the laser receiving unit 32 move along with the detection ring 35, namely rotate around the gas sample container 21 and move up and down at the same time, and the movement mode can enable the laser to bombard the gas from different directions, so that the sufficient bombardment of the laser on the sample is ensured, the problem of insufficient bombardment of the gas to be detected caused by different densities is avoided, and the accurate measurement is realized. In addition, the laser irradiation device 31 and the laser receiving unit 32 are located at opposite positions and move simultaneously, so that accurate laser receiving can be realized, and the accuracy of a measurement result is further ensured.
Specifically, the laser light receiving unit 32 includes a prism 321, a grating 322, and a spectrum receiving device 323. Prism 321 is located between delivery conduit 22 and grating 322.
The grating 322 has four grating sides 3221 that meet one another in sequence. Four grating sides 3221 are gratings for screening four different isotopes of lead, respectively, one grating side 3221 corresponding to screening of an isotope of lead.
The grating side 3221 is disposed opposite to the prism 321, and the grating 322 is rotatable about a center line in the middle of the four grating sides 3221, and when rotated, the four grating sides 3221 are sequentially opposite to the prism 321 to receive and screen the spectrum decomposed by the prism 321.
The spectrum receiving device 323 is provided in the grating 322, receives the spectrum screened by the grating side 3221, and the spectrum receiving device 323 is connected to the spectrum analyzer 33 to transmit the collected spectrum to the spectrum analyzer 33.
The spectrum analyzer 33 analyzes the specific content of lead and its isotopes. The mass numbers (204, 206, 207, 208) and other relevant data about lead and its isotopes, in particular their LIBS characteristic spectra, are stored in the spectrum analyzer 33, and by comparing the measured data with the stored data, a more intuitive and accurate analysis is possible.
In this embodiment, the grating 322 may have other numbers and types of grating sides for screening different isotopes of other elements, and may be configured according to the detected object.
The gas detection module also includes a mass spectrometer probe 36 and a single particle mass spectrometer 37 for measuring aerosols. The mass spectrometer probe 36 is connected to a single particle mass spectrometer 37 which measures aerosols.
As shown in fig. 3, the sidewall of the gas sample container 21 has a detection hole 211 that can be opened and closed.
The mass spectrometer probe 36 can open the detection hole 211, extend into the gas sample container 21, receive and detect the gas irradiated by the laser, and transmit the detected data to the single particle mass spectrometer 37 for measuring aerosol, so as to obtain the mass spectrum detection result of the gas, namely, obtain the types of all elements in the gas. After detection is complete, the mass spectrometer probe 36 is removed from the detection aperture 211 and the detection aperture 211 is sealed closed.
Further, the bracket 23 includes a disk 231 and a rod 232. The disk 231 is fixed to the top end of the rod 232. The disk 231 is detachably connected to the bottom cover of the gas sample container 21, and when connected, the rod 232 moves to drive the gas sample container 21 to move up and down. The rod 232 can be driven to move by an electric device such as a motor.
The gas detection module also includes a baffle 38. The baffle 38 is disposed outside the top end of the detection section 221 and is movable into the detection section 221 through an opening in the wall of the detection section 221.
The disk 231 of the holder 23 is in mating engagement with the inner wall of the gas sample container 21.
When the gas sample container 21 is located in the detection section 221, the shutter 38 is moved into the detection section 221 to block the upper end of the gas sample container 21. At this time, the bottom cover of the gas sample container 21 is opened, the holder 23 is moved upward, and the gas in the gas sample container 21 is compressed by the upward moving disk 231, and the gas concentration is increased to facilitate detection.
Preferably, the outer surface of the bottom cover of the gas sample container 21 is coated with a magnetic material, the disk 231 is made of an electromagnet material, and the electromagnet is activated by an electric device and an electric wire in the rod body 232. When activated, the bottom cover of the gas sample container 21 is in attractive connection with the disk 231 of the bracket 23, that is, the gas sample container 21 is fixedly connected with the disk 231, and the bracket 23 can drive the gas sample container 21 to move up and down. When the power is off, the gas sample container 21 is not connected with the bracket 23, and the bracket 23 can be removed. When the bracket 23 conveys the gas sample container 21 into the unmanned aerial vehicle sample channel 115 to prepare for collecting gas, the bracket 23 is separated from the gas sample container 21 after the gas sample container 21 is fixed below the fan 114, the unmanned aerial vehicle 11 is moved downwards, and the unmanned aerial vehicle 11 can fly to collect samples.
As shown in fig. 8, the gas treatment unit includes an exhaust duct 41 and an exhaust fan 42.
One end of the exhaust duct 41 communicates with the bottom end side of the delivery duct 22, and the other end communicates with the outside. The exhaust duct 41 is L-shaped, and the exhaust fan 42 is provided at a turn in the exhaust duct 41.
When the gas sample container 21 moves down to the bottom end of the transport pipe 22, the detection hole 211 is opposed to the exhaust pipe 41. The detection hole 211 is opened, the exhaust fan 114 is rotated to form an internal-external pressure difference, and the gas in the gas sample container 21 can be exhausted.
As shown in fig. 1, the detection system further comprises a housing 5.
The base housing 123 is fixed to the upper end of the housing 5. The top end of the transfer tube 22 extends into the base housing 123, the top end communicates with the bottom end of the housing sample channel 122, and the remainder of the transfer tube 22 is disposed vertically within the housing 5. The gas detection module may also be provided within the housing 5.
The working process of the detection system is as follows:
Step one, the unmanned aerial vehicle 11 collects a gas sample during flight. The top end port of the exhaust pipe 113, and the top and bottom covers of the gas sample container 21 are opened, the connection rod 116 is extended to separate the middle body 1112 and the lower body 1113, the fan 114 is rotated, and the gas continuously enters the gas sample container 21 from the gap between the middle body 1112 and the lower body 1113 and is then discharged upward through the exhaust pipe 113. After a period of time, the top and bottom caps of the gas sample container 21 are closed and the gas sample collection is completed. The exhaust pipe 113 and the connecting rod 116 are also closed and contracted accordingly.
And step two, the unmanned aerial vehicle 11 returns to fly into the base shell 123 and rests on the seat body 121. The drone bottom cap 117 is opened and the cradle 23 extends into the drone sample channel 115 and connects with the gas sample container 21. Meanwhile, the charging module charges the unmanned aerial vehicle 11.
Step three, the bracket 23 drives the gas sample container 21 to move downwards to the gas detection module. The laser generator 34 generates laser light, and the laser light is emitted from the laser irradiation device 31, and the laser light is applied to the gas in the gas sample container 21, and then received by the laser receiving unit 32 to form a spectrum, and the spectrum analyzer 33 receives the spectrum, and analyzes the result of the detection of the gas. During this detection, the laser irradiation device 31 and the laser receiving unit 32 also rotate and move up and down with the detection ring 35. At the same time, the mass spectrometer probe 36 extends into the gas sample container 21, receives and detects the gas irradiated by the laser, and transmits the detected data to the single particle mass spectrometer 37 for measuring aerosol, thereby obtaining a mass spectrometry detection result of the gas.
Step four, the bracket 23 continues to drive the gas sample container 21 to move downwards to the gas treatment unit. The detection hole of the gas sample container 21 is opened, the exhaust fan 42 is rotated, and the gas in the gas sample container is discharged from the exhaust duct 41.
Step five, the bracket 23 drives the emptied gas sample container 21 to move upwards, and returns back to the unmanned plane sample channel 115 of the unmanned plane 11. After the gas sample container 21 is fixed, the bracket 23 is separated from the gas sample container, the gas sample container is moved out of the unmanned aerial vehicle sample channel 115, and the unmanned aerial vehicle 11 is ready for the next collection work.
Claims (6)
1. An atmospheric particulate lead-containing and isotope detection system thereof is characterized in that:
comprises a gas collection module, a gas detection module and a sample conveying unit;
The gas collection module comprises an unmanned aerial vehicle and a base;
the unmanned aerial vehicle comprises a machine body, a plurality of wings, an exhaust pipe, an unmanned aerial vehicle sample channel and a fan, wherein the wings are arranged on the machine body and drive the unmanned aerial vehicle to fly;
the exhaust pipe is arranged in the machine body, and the top end of the exhaust pipe can be communicated with the outside;
the unmanned aerial vehicle sample channel is vertically arranged in the machine body, the top end of the unmanned aerial vehicle sample channel is communicated with the bottom end of the exhaust pipe, and the fan is arranged at the top end of the unmanned aerial vehicle sample channel;
the sample delivery unit includes a gas sample container having openable top and bottom caps, the sidewalls of the gas sample container being transparent;
the gas sample container is detachably arranged in the unmanned aerial vehicle sample channel and is positioned below the fan;
The top end of the exhaust pipe, the top cover and the bottom cover of the gas sample container and the part of the unmanned aerial vehicle sample channel, which is positioned below the gas sample container, are opened, the fan rotates, gas continuously enters the gas sample container from the opening part of the unmanned aerial vehicle sample channel, then is exhausted upwards through the exhaust pipe, the top cover and the bottom cover of the gas sample container are closed, and gas collection is completed;
the base comprises a base body, the base body is provided with a base body sample channel which is vertically arranged, the unmanned aerial vehicle is stopped on the base body, and the unmanned aerial vehicle sample channel is communicated with the base body sample channel;
The sample conveying unit further comprises a conveying pipeline and a bracket;
The conveying pipeline is fixedly positioned below the seat body, and the top end of the conveying pipeline is communicated with the seat body sample channel;
The top end of the bracket is detachably connected with the gas sample container, and the bracket stretches into the unmanned aerial vehicle sample channel and can drive the gas sample container to pass through the seat body sample channel and move into the conveying pipeline after being connected with the gas sample container;
the conveying pipeline is provided with a detection section, and the pipe wall of the detection section is transparent;
The gas detection module comprises a laser irradiation device, a laser receiving unit, a spectrum analyzer, a mass spectrometer probe and a single-particle mass spectrometer for measuring aerosol;
The laser irradiation device and the laser receiving unit are respectively arranged at two opposite sides outside the detection section, and when the gas sample container moves to the detection section, the laser irradiation device emits laser, and the laser acts on the gas in the gas sample container and is received by the laser receiving unit to form a spectrum;
The spectrum analyzer is connected with the laser receiving unit, receives the spectrum and analyzes the detection result of the obtained gas;
The mass spectrometer probe is connected with a single-particle mass spectrometer for measuring aerosol;
the side wall of the gas sample container is provided with a detection hole which can be opened and closed;
The mass spectrometer probe can open the detection hole, extend into the gas sample container, receive and detect the gas irradiated by the laser, and transmit the detected data to the single-particle mass spectrometer for measuring the aerosol to obtain a mass spectrum detection result of the gas;
The gas detection module further comprises a detection ring; the detection ring is sleeved outside the detection section of the conveying pipeline, and the laser irradiation device and the laser receiving unit are both fixed on the detection ring and positioned at opposite positions on the detection ring; the detection ring rotates around the center of the detection ring and moves up and down at the same time, and the up and down movement range is from the top position of the gas sample container to the bottom position of the gas sample container;
The support comprises a disc and a rod body, and the disc is fixed at the top end of the rod body; the disc is detachably connected with the bottom cover of the gas sample container, and when the disc is connected with the bottom cover of the gas sample container, the rod body moves to drive the gas sample container to move up and down;
The gas detection module further comprises a baffle; the baffle is arranged outside the top end of the detection section and can move into the detection section through an opening of the pipe wall of the detection section; the disc of the bracket is matched and fit with the inner wall of the gas sample container; when the gas sample container is positioned in the detection section, the baffle plate moves into the detection section and is blocked at the upper end of the gas sample container, the bottom cover of the gas sample container is opened, the bracket moves upwards, and gas in the gas sample container is compressed by the disc moving upwards.
2. The atmospheric particulate lead and isotope detection system thereof according to claim 1, wherein:
the laser receiving unit comprises a prism, a grating and a spectrum receiving device, and the prism is positioned between the conveying pipeline and the grating;
The grating is provided with a plurality of grating sides which are connected in sequence;
The grating side faces are arranged opposite to the prisms, the gratings can rotate around the central lines among the grating side faces, and when the gratings rotate, the grating side faces are sequentially opposite to the prisms to receive and screen spectrums decomposed by the prisms;
The spectrum receiving device is arranged in the grating and is used for receiving the spectrum screened by the side face of the grating, the spectrum receiving device is connected with the spectrum analyzer and transmits the collected spectrum to the spectrum analyzer.
3. The atmospheric particulate lead and isotope detection system thereof according to claim 1, wherein:
the unmanned aerial vehicle comprises a body, a central body and a lower body, wherein the body of the unmanned aerial vehicle is provided with the central body and the lower body which can be separated up and down, and the lower body is positioned below the central body;
the unmanned aerial vehicle sample channel is divided into an upper channel section and a lower channel section which are respectively arranged in the middle machine body and the lower machine body;
The gas sample container is detachably arranged in the upper channel section;
The unmanned aerial vehicle further comprises a plurality of telescopic connecting rods, the upper ends of the connecting rods are fixed in the middle machine body, and the lower ends of the connecting rods are fixed in the lower machine body;
The connecting rod stretches, the middle machine body is separated from the lower machine body, and gas can enter the unmanned aerial vehicle sample channel from a gap between the middle machine body and the lower machine body;
The bottom of unmanned aerial vehicle still is equipped with openable and closed unmanned aerial vehicle bottom, and unmanned aerial vehicle bottom is when closed, and unmanned aerial vehicle's bottom is sealed, and when opening, gas sample container can follow unmanned aerial vehicle sample channel and shift out.
4. The atmospheric particulate lead and isotope detection system thereof according to claim 1, wherein:
The base also comprises a base shell, wherein the top surface of the base shell is provided with an openable solar panel;
the base is fixedly arranged in the base, is a charging module and can receive the converted electric energy collected by the solar panel;
The top end of the seat body is provided with an annular charging plug which is arranged around the top end of the seat body sample channel in a surrounding manner;
the bottom end of the unmanned aerial vehicle is provided with an annular charging slot which is arranged around the bottom end of the gas sample channel;
The charging plug is matched with the charging plug, the charging plug can be inserted into the charging plug, and after the charging plug is inserted, the seat body sample channel positioned in the center of the charging plug is communicated with the unmanned aerial vehicle sample channel in the center of the charging plug;
The unmanned aerial vehicle flies into the base shell, when berthing on the pedestal, the charging plug on the top end of the pedestal is inserted into the charging slot on the bottom end of the unmanned aerial vehicle, and the charging module charges the unmanned aerial vehicle.
5. The atmospheric particulate lead and isotope detection system thereof according to claim 1, wherein:
The device also comprises a gas treatment unit;
The gas treatment unit comprises an exhaust pipeline and an exhaust fan;
one end of the exhaust pipeline is communicated with the side surface of the bottom end of the conveying pipeline, and the other end of the exhaust pipeline is communicated with the outside;
The exhaust pipeline is L-shaped, and the exhaust fan is arranged at a turning position in the exhaust pipeline;
When the gas sample container moves down to the bottom end of the conveying pipeline, the detection hole is opposite to the exhaust pipeline, the detection hole is opened, the exhaust fan rotates, and gas in the gas sample container is exhausted.
6. The atmospheric particulate lead and isotope detection system thereof according to claim 4 wherein:
Also comprises a shell;
The base shell is fixed at the upper end of the shell;
The top end of the conveying pipeline stretches into the base shell, the top end of the conveying pipeline is communicated with the bottom end of the seat body sample channel, and the rest part of the conveying pipeline is vertically arranged in the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910475963.XA CN110068524B (en) | 2019-06-03 | Atmospheric particulate lead-containing and isotope detection system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910475963.XA CN110068524B (en) | 2019-06-03 | Atmospheric particulate lead-containing and isotope detection system thereof |
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| Publication Number | Publication Date |
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| CN110068524A CN110068524A (en) | 2019-07-30 |
| CN110068524B true CN110068524B (en) | 2024-07-02 |
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