CN110068524A - Atmospheric particulates are leaded and its isotope detection system - Google Patents

Abstract

The invention discloses a system for detecting lead in atmospheric particulate matter and its isotopes, 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 an exhaust pipe, an unmanned aerial vehicle machine sample channel and fan; the sample conveying unit includes a gas sample container; the base includes a base body with a base body sample channel; the conveying pipe is fixed under the base body; the gas detection module includes a laser irradiation device, a laser receiving unit, and a spectrum analyzer and mass spectrometer probe and single particle mass spectrometer for measuring aerosol; when the gas sample container moves to the detection section, the laser irradiation device emits laser light, after the laser acts on the gas, the spectrum analyzer receives the spectrum and analyzes the gas detection result; the mass spectrometer The probe extends into the gas sample container, and the detected data is transmitted to the single particle mass spectrometer that measures the aerosol to obtain the mass spectrometry detection result of the gas. The present invention has the advantages of precision, speed and the like.

Description

Lead and Isotope Detection System in Atmospheric Particulate Matter

technical field

The invention belongs to the field of environmental detection, and relates to a gas detection system, in particular to a detection system for lead in atmospheric particulate matter and its isotope.

Background technique

At present, most of the detection of lead and its isotopes in atmospheric particulates requires manual collection or other collection methods. Long-term manual collection work may affect the human health of the collectors and cause great harm. In addition, methods such as artificial collection are not accurate enough when collecting gas samples, and are easily mixed into the original gas in the collection container or conveying equipment, resulting in large errors in the gas detection results and inability to obtain accurate and accurate gas performance detection results. In addition, methods such as artificial collection cannot realize real-time detection of data. Most of them need to collect a large number of samples and then send them to the detection device for monitoring. The whole process takes a long time, and real-time performance data of gas cannot be obtained. Due to the fluidity of gas Larger, this delayed result output greatly reduces the subsequent applicability of the gas detection results. For example, when carrying out pollution control work, the gas detection results before a certain period of time are less reference.

SUMMARY OF THE INVENTION

The present invention provides a system for detecting lead and its isotopes in atmospheric particulate matter, so as to overcome the defects of the prior art.

In order to achieve the above purpose, the present invention provides a system for detecting lead in atmospheric particulate matter and its isotopes, including a gas collection module, a gas detection module and a sample delivery unit; the gas collection module includes an unmanned aerial vehicle and a base; the unmanned aerial vehicle includes a body, Several wings, exhaust pipes, UAV sample channels and fans, the wings are arranged on the body to drive the drone to fly; the exhaust pipes are arranged in the body, and the top can be communicated with the outside world; the UAV sample channel is vertical It is directly arranged in the body, the top end communicates with the bottom end of the exhaust pipe, and the fan is arranged at the top end of the sample channel of the drone; the sample delivery unit includes a gas sample container, and the gas sample container has an openable top cover and a bottom cover. The side wall of the container is transparent; the gas sample container is detachably arranged in the sample channel of the drone, and is located below the fan; the top of the exhaust pipe, the top and bottom covers of the gas sample container, and the sample channel of the drone is located in the gas The lower part of the sample container is opened, the fan rotates, the gas continues to enter the gas sample container from the open part of the sample channel of the drone, and then is discharged upward through the exhaust pipe, the top and bottom covers of the gas sample container are closed, and the gas collection is completed; The base includes a base body, the base body has a base body sample channel arranged vertically, the drone is docked on the base body, and the drone sample channel is communicated with the base body sample channel; the sample conveying unit also includes a conveying pipe and a support; the conveying pipe It is fixed under the base, and the top of the conveying pipe is connected with the sample channel of the base; the top of the bracket is detachably connected to the gas sample container, and the bracket extends into the sample channel of the drone. After connecting with the gas sample container, the gas sample can be driven. The container passes through the sample channel of the base body and is moved into the conveying pipeline; the conveying pipeline has a detection section, and the pipe wall of the detection section is transparent; the gas detection module includes a laser irradiation device, a laser receiving unit, a spectrum analyzer, a mass spectrometer probe and a measuring device for aerosols. Single particle mass spectrometer; the laser irradiation device and the laser receiving unit are respectively arranged on opposite sides outside the detection section. When the gas sample container moves to the detection section, the laser irradiation device emits laser light. After the laser acts on the gas in the gas sample container, it is The laser receiving unit receives and forms the spectrum; the spectrum analyzer is connected with the laser receiving unit, the spectrum analyzer receives the spectrum, and analyzes the detection result of the gas; the mass spectrometer probe is connected with the single particle mass spectrometer for measuring aerosol; the side of the gas sample container The wall has a detection hole that 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 the detected data is transmitted to the single particle mass spectrometer that measures the aerosol, Obtain gas mass spectrometry detection results.

Further, the present invention provides a system for detecting lead in atmospheric particulate matter and its isotopes, which may also have the following features: wherein the gas detection module further includes a detection ring; the detection ring is sleeved outside the detection section of the conveying pipeline, and the laser irradiation device and the The receiving units are all fixed on the detection ring and are located at opposite positions on the detection ring; the detection rotates around its center 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.

Further, the present invention provides a system for detecting lead in atmospheric particulate matter and its isotopes, which can also have the following characteristics: wherein the laser receiving unit includes a prism, a grating and a spectrum receiving device, and the prism is located between the conveying pipeline and the grating; the grating has several The grating side faces are connected in sequence; the grating side faces are arranged opposite to the prism, and the grating can rotate around the center line in the middle of several grating side faces. When rotating, several grating side faces are opposite to the prism in turn to receive and filter the spectrum decomposed by the prism; The device is arranged in the grating and receives the spectrum screened by the side of the grating. The spectrum receiving device is connected with the spectrum analyzer, and transmits the collected spectrum to the spectrum analyzer.

Further, the present invention provides a system for detecting lead in atmospheric particulate matter and its isotopes, which may also have the following characteristics: wherein the support includes a disc and a rod body, and the disc is fixed on the top of the rod body; the disc and the bottom cover of the gas sample container Removable connection, when connected, the rod body moves, which drives the gas sample container to move up and down.

Further, the present invention provides a system for detecting lead in atmospheric particulate matter and its isotopes, which may also have the following features: wherein the gas detection module further includes a baffle; The opening of the wall moves into the detection section; the disc of the bracket matches the inner wall of the gas sample container; when the gas sample container is located in the detection section, the baffle moves into the detection section and blocks the upper end of the gas sample container, and the bottom cover of the gas sample container is opened , the support moves upward, and the gas in the gas sample container is compressed by the upward moving disc.

Further, the present invention provides a system for detecting lead in atmospheric particulate matter and its isotopes, which can also have the following characteristics: wherein, the body of the drone has a middle body and a lower body that can be separated up and down, and the lower body is located below the middle body; The sample channel of the drone is divided into an upper channel section and a lower channel section, which are respectively set in the middle body and the lower body; the gas sample container is detachably arranged in the upper channel section; the drone also includes several retractable connecting rods , the upper end of the connecting rod is fixed in the middle body, and the lower end is fixed in the lower body; the connecting rod is extended, the middle body is separated from the lower body, and the gas can enter the UAV sample channel from the gap between the middle body and the lower body; no The bottom end of the man-machine is also provided with a bottom cover of the drone that can be opened and closed. When the bottom cover of the drone is closed, the bottom end of the drone is sealed, and when it is opened, the gas sample container can be removed from the drone sample channel. Move out.

Further, the present invention provides a system for detecting lead in atmospheric particulate matter and its isotopes, which can also have the following characteristics: wherein the base further includes a base shell, and the top surface of the base shell has an openable solar panel; the base body It is fixed in the base, and the base is a charging module, which can receive the electric energy collected and converted by the solar panel; the top of the base has a ring-shaped charging plug, which is arranged around the top of the sample channel of the base; the bottom end of the drone has a ring-shaped charging plug. The charging slot is arranged around the bottom of the gas sample channel; the charging slot matches the charging plug, and the charging plug can be inserted into the charging slot. The UAV sample channel is connected; when the UAV flies into the base shell and docks on the base, the charging plug at the top of the base is inserted into the charging slot at the bottom of the UAV, and the charging module charges the UAV.

Further, the present invention provides a system for detecting lead in atmospheric particulate matter and its isotopes, which can also have the following features: further comprising a gas processing unit; the gas processing unit includes an exhaust duct and an exhaust fan; one end of the exhaust duct is connected to a conveying duct The bottom end of the gas sample container is connected to the side, and the other end is connected to the outside world; the exhaust duct is L-shaped, and the exhaust fan is located at the turning point in the exhaust duct; The gas pipes are opposite to each other, the detection hole is opened, the exhaust fan rotates, and the gas in the gas sample container is discharged.

Further, the present invention provides a system for detecting lead in atmospheric particulate matter and its isotopes, which can also have the following features: further comprising a shell; the base shell is fixed on the upper end of the shell; the top end of the conveying pipe extends into the base shell, and the top end is The bottom ends of the sample channels of the base are communicated with each other, and the remaining part of the conveying pipeline is vertically arranged in the casing.

The beneficial effects of the present invention are as follows: the present invention provides a system for detecting lead and its isotopes in atmospheric particulates, collecting gas samples by unmanned aerial vehicles, and separately storing and transporting gas samples by setting up a gas sample container, and the gas sample container is a separate gas sample container. Space, the gas sample is completely isolated from the outside world, avoiding the problem of impurity of the sample when the gas sample is mixed with the gas in the pipeline when the gas is directly transported through the pipeline. Secondly, after the drone collection is completed, the gas sample container is transported to the gas detection module for detection, reducing the consumption of manpower and material resources, and at the same time ensuring the "freshness" of the data. The gas detection module includes spectral analysis and mass spectrometry analysis. The two kinds of detection are combined to obtain the two-dimensional information of the spectrum and mass spectrometry, and the accurate composition information of the atmospheric particles can be obtained by analysis, and the atmospheric pollutants can be detected comprehensively and accurately. Among them, it also includes a detection ring, which can drive the relative position of the laser irradiation device and the laser receiving unit to rotate and move up and down, so as to fully bombard the gas with various densities and other conditions, and realize the accurate reception of the laser, and improve the detection results in many aspects. accuracy. In addition, the four grating sides are used to screen the four isotopes of lead, which are highly targeted. The invention can realize automatic, convenient, rapid and more comprehensive detection of atmospheric pollutants, and provide real-time data support for pollutant treatment.

Description of drawings

Figure 1 is a schematic diagram of the structure of the base and the upper part of the housing of the atmospheric particulate matter lead and its isotope detection system;

Figure 2 is a schematic structural diagram of an unmanned aerial vehicle of an atmospheric particulate matter lead and its isotope detection system;

3 is a schematic structural diagram of a gas sample container;

FIG. 4 is a schematic structural diagram of the separated state of the middle body and the lower body of the UAV;

Fig. 5 is the front view structure schematic diagram of gas detection module;

6 is a schematic top view of a gas detection module;

7 is a schematic structural diagram of different movement positions of the gas detection module;

FIG. 8 is a schematic structural diagram of a unit for gas processing.

Detailed ways

The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

The present invention provides a system for detecting lead in atmospheric particulate matter and its isotopes, comprising a gas collection module, a gas detection module, a sample delivery unit and a gas processing unit.

As shown in FIGS. 1 and 2 , the gas collection module includes a drone 11 and a base 12 .

The drone 11 includes a body 111 , several wings 112 , an exhaust duct 113 , a fan 114 and a drone sample channel 115 . The wing 112 is disposed on the body 111 and includes a driving device, which can drive the drone 11 to fly.

The exhaust pipe 113 is arranged in the body 111, and the top end can communicate with the outside world, and can discharge gas. Preferably, as shown in FIG. 2 , the exhaust pipe 113 is vertically arranged in the upper part 1111 of the body 111 , and the top end has a cover 1131 that can be closed by lifting. When the cover 1131 rises, the top of the exhaust pipe 113 communicates with the outside world. , after the cover body 1131 is lowered, the top end of the exhaust pipe 113 is closed. The upper part 1111 of the body 111 is other integrated parts such as batteries.

The drone sample channel 115 is vertically arranged in the body 111 , and the top end communicates with the bottom end of the exhaust pipe 113 . The fan 114 is arranged at the top of the drone sample channel 115 .

The sample delivery unit includes a gas sample container 21 . As shown in FIG. 3 , the gas sample container 21 is cylindrical with openable top and bottom covers. The side walls of the gas sample container are transparent.

The gas sample container 21 is detachably disposed in the sample channel 115 of the drone, below the fan 114 .

When the drone 11 flies to collect samples, the top of the exhaust pipe 113, the top and bottom covers of the gas sample container 21, and the part of the drone sample channel 115 below the gas sample container 21 are opened, the fan 114 rotates, and the gas The gas sample container 21 is continuously entered from the open portion of the sample channel 115 of the drone, and then discharged upward through the exhaust pipe 113 . In the above process, the original gas in the gas sample container 21 can be exhausted first, and then other newly collected samples can be introduced. Then, the top and bottom covers of the gas sample container 21 are closed, and the gas collection is completed. At this time, the UAV sample channel 115 and the exhaust pipe 113 are also closed, and the UAV 11 can continue to fly smoothly.

When the gas sample is collected, the UAV sample channel 115 located under the gas sample container 21 is opened. Specifically, the body 111 of the drone 11 has a middle body 1112 and a lower body 1113 that can be separated up and down. The lower body 1113 is located below the middle body 1112 . The middle body 1112 is fixedly located below the upper part 1111 of the body 111 .

The UAV 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 several retractable connecting 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 the gas sample is collected, the connecting rod 116 is extended, and the middle body 1112 is separated from the lower body 1113 . Due to the rotation of the fan 114 , the gas can enter the UAV from the gap between the middle body 1112 and the lower body 1113 The sample channel 115 then enters the gas sample container 21 to realize gas collection. Compared with introducing gas from other positions (for example, the bottom end of the sample channel of the drone), the separation of the body can make the flight of the drone more stable.

Preferably, the bottom end of the drone 11 is further provided with a bottom cover 117 of the drone that can be opened and closed. When the bottom cover 117 of the drone is closed, the bottom end of the drone 11 is sealed, and the sealing can make the drone 11 The flight process is more stable. When open, the gas sample container 21 can be removed from the drone sample channel 115 .

The base 12 includes a seat body 121 . The center of the holder body 121 has a holder body sample channel 122 arranged vertically and penetrating up and down. The drone 11 can be docked on the base body 121 . When docked, the drone sample channel 115 is communicated with the base body sample channel 122 .

Further, the base 12 further includes a base housing 123 . The top surface of the base housing 123 has an openable solar panel. The base body 121 is fixedly located in the base 12, and the base body 121 is a charging module, which can receive the electric energy collected and converted by the solar cell panel. The top end of the base body 121 has an annular charging plug, which is arranged around the top of the base body sample channel 122 .

The bottom end of the drone has an annular charging slot 118 , which is arranged around the bottom end of the gas sample channel 115 .

The charging socket 118 matches the charging plug, and the charging plug can be inserted into the charging socket. After insertion, the base sample channel 122 located in the center of the charging plug communicates with the drone sample channel 115 in the center of the charging socket 118 . When the drone 11 flies into the base shell 123 and stops on the base 121, the charging plug at the top of the base 121 is inserted into the charging slot 118 at the bottom of the drone 11, and the charging module charges the drone.

The sample delivery unit also includes a delivery conduit 22 and a holder 23 .

The conveying pipe 22 is fixedly located below the base body 121 . The top end of the delivery pipe 22 is communicated with the base sample channel 122 .

The top end of the holder 23 is detachably connected to the gas sample container 21 . The UAV sample channel 115 , the base sample channel 122 and the conveying pipeline 22 are all circular in cross section, and have the same inner diameter, and are connected one by one to form a whole channel. The bracket 23 extends into the sample channel 115 of the drone, and after being connected with the gas sample container 21 , can drive the gas sample container 21 to pass through the base sample channel 122 and move into the delivery pipeline 22 .

As shown in FIG. 5 , the delivery pipe 22 has a detection section 221 . The pipe 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 irradiating device 31 and the laser receiving unit 32 are respectively disposed on opposite sides outside the detection section 221 . The laser generating device 34 is connected to the laser irradiation device 31 . When the gas sample container 21 moves to the detection section 221 , the laser generating device 34 generates laser, and the laser irradiation device 31 emits the laser. After the laser acts on the gas in the gas sample container 21 , the laser is received by the laser receiving unit 32 and forms a spectrum. The spectrum analyzer 33 is connected to the laser receiving unit 32, the spectrum analyzer 33 receives the spectrum, and analyzes the gas detection result.

Further, as shown in FIGS. 5-7 , the gas detection module further includes a detection ring 35 .

The detection ring 35 is sleeved outside the detection section 221 of the conveying pipe 22, and the conveying pipe 22 is located at the center thereof. The laser irradiating device 31 and the laser receiving unit 32 are both fixed on the detection ring 35 and located at opposite positions on the detection ring 35 . The detection ring 35 rotates around its center 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 21 to the bottom position of the gas sample container 21 .

The laser irradiation device 31 and the laser receiving unit 32 move with the detection ring 35, that is, they rotate around the gas sample container 21 and move up and down at the same time. This movement method enables the laser to bombard the gas from different directions, so as to ensure sufficient bombardment of the sample by the laser and avoid waiting. The problem of insufficient bombardment of the measured gas due to different densities can be achieved to achieve accurate measurement. In addition, the laser irradiating device 31 and the laser receiving unit 32 are located in relative positions and move at the same time, which can realize accurate laser reception and further ensure the accuracy of the measurement results.

Specifically, the laser receiving unit 32 includes a prism 321 , a grating 322 and a spectrum receiving device 323 . The prism 321 is located between the conveying pipe 22 and the grating 322 .

The grating 322 has four grating side surfaces 3221 which are connected in sequence. The four grating side surfaces 3221 are gratings respectively used for screening four different isotopes of lead, and one grating side surface 3221 corresponds to the screening of one isotope of lead.

The grating side 3221 is opposite to the prism 321, and the grating 322 can rotate around the center line of the four grating sides 3221. When rotating, the four grating sides 3221 are opposite to the prism 321 in turn, and receive and filter the spectrum decomposed by the prism 321.

The spectrum receiving device 323 is arranged in the grating 322 to receive the spectrum filtered by the grating side 3221 . The spectrum receiving device 323 is connected to the spectrum analyzer 33 and transmits the collected spectrum to the spectrum analyzer 33 .

Spectral analyzer 33 analyzes to obtain the specific content of lead and its isotopes. The mass numbers (204, 206, 207, 208) and other related data of lead and its isotopes are stored in the spectrum analyzer 33, especially their LIBS characteristic spectra. By comparing the measured data with the stored data, it is possible to for a more intuitive and accurate analysis.

In this embodiment, the grating 322 may also have other numbers and types of grating sides, so as to be used for screening different isotopes of other elements, which can be designed according to the detection object.

The gas detection module also includes a mass spectrometer probe 36 and a single particle mass spectrometer 37 that measures aerosols. The mass spectrometer probe 36 is connected to a single particle mass spectrometer 37 that measures aerosols.

As shown in FIG. 3 , the side wall of the gas sample container 21 has a detection hole 211 which 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 that measures the aerosol to obtain the mass spectrometry detection result of the gas , that is, to get the types of all elements in the gas. After the detection is completed, the mass spectrometer probe 36 is removed from the detection hole 211 , and the detection hole 211 is closed and sealed.

Further, the bracket 23 includes a disc 231 and a rod body 232 . The disc 231 is fixed on the top end of the rod body 232 . The disc 231 is detachably connected to the bottom cover of the gas sample container 21 . When connected, the rod body 232 moves to drive the gas sample container 21 to move up and down. The rod body 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 arranged outside the top position of the detection section 221 , and can be moved into the detection section 221 through the opening of the pipe wall of the detection section 221 .

The disk 231 of the holder 23 is matched with the inner wall of the gas sample container 21 .

When the gas sample container 21 is located in the detection section 221 , the baffle 38 moves into the detection section 221 and blocks the upper end of the gas sample container 21 . At this time, the bottom cover of the gas sample container 21 is opened, the support 23 is moved upward, the gas in the gas sample container 21 is compressed by the upwardly moved 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 disc 231 is made of electromagnet material, and the electromagnet can be activated by the electric device and the wires in the rod body 232 . When activated, the bottom cover of the gas sample container 21 is suction-connected to the disk 231 of the bracket 23 , that is, the gas sample container 21 is fixedly connected to the disk 231 , and the bracket 23 can drive the gas sample container 21 to move up and down. When the power is turned off, the gas sample container 21 is not connected with the holder 23, and the holder 23 can be removed. Removing the finger, when the support 23 transports the gas sample container 21 into the UAV sample channel 115 and is ready to collect gas, after the gas sample container 21 is fixed under the fan 114 , the support 23 is separated from it, and moves downward out of the UAV 11 , the drone 11 can fly to collect samples.

As shown in FIG. 8 , the gas processing unit includes an exhaust duct 41 and an exhaust fan 42 .

One end of the exhaust duct 41 is communicated with the side surface of the bottom end of the conveying duct 22, and the other end is communicated 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 is moved down to the bottom end of the delivery pipe 22 , the detection hole 211 is opposite to the exhaust pipe 41 . The detection hole 211 is opened, and the exhaust fan 114 rotates to form a pressure difference between the inside and outside, so that the gas in the gas sample container 21 can be discharged.

As shown in FIG. 1 , the detection system further includes a housing 5 .

The base case 123 is fixed to the upper end of the case 5 . The top end of the delivery pipe 22 extends into the base housing 123 , the top end communicates with the bottom end of the base sample channel 122 , and the rest of the delivery pipe 22 is vertically arranged in the housing 5 . The gas detection module can also be arranged in the housing 5 .

The working process of the detection system is as follows:

Step 1: The drone 11 collects gas samples during flight. The top port of the exhaust pipe 113 and the top and bottom covers of the gas sample container 21 are opened, the connecting rod 116 is extended to separate the middle body 1112 and the lower body 1113, the fan 114 rotates, and the gas continues from the middle body 1112 and the lower body 1113 The gap between them enters the gas sample container 21 , and is discharged upward through the exhaust pipe 113 . After a period of time, the top and bottom covers 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 retracted accordingly.

Step 2: The drone 11 returns, flies into the base shell 123 , and stops on the base body 121 . The bottom cover 117 of the drone is opened, and the bracket 23 extends into the sample channel 115 of the drone and is connected to the gas sample container 21 . At the same time, the charging module charges the drone 11 .

Step 3: The support 23 drives the gas sample container 21 to move down to the gas detection module. The laser generating device 34 generates laser light and emits it through the laser irradiation device 31. After the laser acts on the gas in the gas sample container 21, it is received by the laser receiving unit 32 to form a spectrum, and the spectrum analyzer 33 receives the spectrum and analyzes it to obtain the detection of the gas. result. During the detection process, 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 that measures the aerosol to obtain the gas mass spectrometry detection result.

Step 4: The support 23 continues to drive the gas sample container 21 to move down to the gas processing 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 5: The support 23 drives the emptied gas sample container 21 to move up, and returns to the drone sample channel 115 of the drone 11 again. After the gas sample container 21 is fixed, the support 23 is separated from it and removed from the drone sample channel 115, and the drone 11 is ready for the next collection.

Claims (9)

1. a kind of Atmospheric particulates are leaded and its isotope detection system, it is characterised in that:

Including gas collection module, gas detection module and sample supply unit；

The gas collection module includes unmanned plane and pedestal；

The unmanned plane includes body, several wings, exhaust pipe, unmanned plane sample channel and fan, and wing is arranged in body On, drive unmanned plane during flying；

The exhaust pipe is arranged in the body, and top can communicate with the outside world；

The unmanned plane sample channel is vertically arranged in the body, and top is connected to the bottom end of the exhaust pipe, the wind The top of the unmanned plane sample channel is arranged in fan；

The sample supply unit includes gas sample container, and gas sample container has openable top cover and bottom cover, gas The side wall of sample container is transparent；

The gas sample container is removable installed in the unmanned plane sample channel, positioned at the lower section of the fan；

The top of the exhaust pipe, the top cover and bottom cover of the gas sample container, the unmanned plane sample channel be located at gas Partially opening below body sample container, the fan rotation, gas continue to enter from the opening part of unmanned plane sample channel Gas sample container, then be discharged upwardly through exhaust pipe, the top cover and bottom cover closure of gas sample container, gas collection is completed；

The pedestal includes pedestal, and pedestal has the pedestal sample channel being vertically arranged, and the unmanned plane rests on pedestal, nothing Man-machine sample channel is connected with pedestal sample channel；

The sample supply unit further includes conveyance conduit and bracket；

The fixed lower section for being located at the pedestal of the conveyance conduit, the top of conveyance conduit is connected with the pedestal sample channel It is logical；

The top of the bracket is detachably connected with the gas sample container, and bracket protrudes into unmanned plane sample channel, with gas After sample container connection, gas sample container can be driven to pass through the pedestal sample channel, move into the conveyance conduit；

The conveyance conduit has detection section, and the tube wall for detecting section is transparent；

The gas detection module includes laser irradiation device, laser pick-off unit, spectroanalysis instrument, mass spectrograph probe and measurement The individual particle mass spectrograph of aerosol；

Laser irradiation device and laser pick-off unit are respectively arranged on two sides opposite outside the detection section, the gas sample container When being moved to detection section, laser irradiation device projects laser, after gas of the laser action in gas sample container, is connect by laser Unit is received to receive and form spectrum；

The spectroanalysis instrument is connect with the laser pick-off unit, and spectroanalysis instrument receives the spectrum, and analyzes and obtain gas The testing result of body；

The mass spectrograph probe is connect with the individual particle mass spectrograph of measurement aerosol；

The side wall of the gas sample container has the detection hole that can be opened and closed；

The openable detection hole of the mass spectrograph probe, protrudes into the gas sample container, receives and detect and shone by laser Gas after penetrating, the data detected pass to the individual particle mass spectrograph of the measurement aerosol, obtain the Mass Spectrometer Method of gas As a result.

2. Atmospheric particulates according to claim 1 are leaded and its isotope detection system, it is characterised in that:

Wherein, the gas detection module further includes detection ring；

For the detection ring set outside the detection section of the conveyance conduit, the laser irradiation device and laser pick-off unit are fixed On detection ring, and it is located at position opposite on detection ring；

It is described to detect around its center rotating, it moves up and down simultaneously, fluctuation range is from the top of the gas sample container Portion position to gas sample container bottom position.

3. Atmospheric particulates according to claim 1 are leaded and its isotope detection system, it is characterised in that:

Wherein, the laser pick-off unit includes prism, grating and spectrum receiving device, and prism is located at the conveyance conduit and light Between grid；

The grating side that there are the grating several successively to connect；

The grating side is oppositely arranged with the prism, and grating can be rotated around the center line among several grating sides, is turned When dynamic, several grating sides are successively opposite with prism, receive and screen the spectrum of prism decomposition；

The spectrum receiving device is set in the grating, the spectrum after receiving the screening of grating side, spectrum receiving device and institute Spectroanalysis instrument connection is stated, the spectrum of collection is sent to spectroanalysis instrument.

4. Atmospheric particulates according to claim 1 are leaded and its isotope detection system, it is characterised in that:

Wherein, the bracket includes disk and the body of rod, and disk is fixed on the top of the body of rod；

The bottom cover of the disk and the gas sample container is detachably connected, and when connection, the body of rod is mobile, drives gas sample This container moves up and down.

5. Atmospheric particulates according to claim 4 are leaded and its isotope detection system, it is characterised in that:

Wherein, the gas detection module further includes baffle；

The baffle is set to outside the apical position of the detection section, can move into detection section by detecting the opening of section tube wall；

The inner wall of the disk of the bracket and the gas sample container, which matches, to be agreed with；

When the gas sample container is located at detection section, baffle moves into detection section, keeps off in the upper end of gas sample container, gas sample The bottom cover of this container is opened, and bracket moves up, the disk compression that the gas in gas sample container is shifted up.

6. Atmospheric particulates according to claim 1 are leaded and its isotope detection system, it is characterised in that:

Wherein, the body of the unmanned plane has the middle part body and lower part body that can be separated up and down, and lower part body is located at middle part The lower section of body；

The unmanned plane sample channel is divided into upper channel section and lower channel section, is respectively arranged in middle part body and lower part body；

The gas sample container is removably disposed in the upper channel section；

The unmanned plane further includes several telescopic connecting rods, and the upper end of connecting rod is fixed in the middle part body, under End is fixed in the lower part body；

Connecting rod elongation, middle part body are separated with lower part body, and gas can seam between middle part body and lower part body Gap enters unmanned plane sample channel；

The bottom end of the unmanned plane is additionally provided with openable and closure unmanned plane bottom cover, when unmanned plane bottom cover is closed, unmanned plane Bottom end is sealed, and when opening, gas sample container can be removed from unmanned plane sample channel.

7. Atmospheric particulates according to claim 1 are leaded and its isotope detection system, it is characterised in that:

Wherein, the pedestal further includes base shell, and the top surface of base shell has openable solar panel；

The pedestal is fixed to be located in the pedestal, and pedestal is charging module, is subjected to the solar panel and is collected conversion Electric energy；

The top of the pedestal has the charging plug of annular, is circumferentially positioned at around pedestal sample channel top；

The bottom end of the unmanned plane has the charging slot of annular, is circumferentially positioned at around the gas sample passageway bottom end；

The charging slot matches with the charging plug, and charging plug can be inserted into charging slot, after insertion, is located at charging and inserts The pedestal sample channel at head center, is connected to the unmanned plane sample channel at charging slot center；

The unmanned plane flies into the base shell, and when resting on the pedestal, the charging plug on pedestal top is inserted into nobody In the charging slot of machine bottom end, charging module is unmanned plane charging.

8. Atmospheric particulates according to claim 1 are leaded and its isotope detection system, it is characterised in that:

It further include air processing unit；

The air processing unit includes exhaust pipe and scavenger fan；

One end of the exhaust pipe is connected with the bottom end side of the conveyance conduit, and the other end is in communication with the outside；

The exhaust pipe is L-shaped, and the scavenger fan is set to the turning in exhaust pipe；

When the gas sample container is displaced downwardly to the bottom end of conveyance conduit, the detection hole is opposite with exhaust pipe, and detection hole is beaten It opens, air ejector fan rotation, the gas in gas sample container is discharged.

9. Atmospheric particulates according to claim 7 are leaded and its isotope detection system, it is characterised in that:

It further include shell；

The base shell is fixed on the upper end of the shell；

The top of the conveyance conduit is protruded into base shell, and top is connected with the bottom end of pedestal sample channel, conveyance conduit Remainder be set in shell vertically.