CN114264518A - High altitude atmospheric pollutants sample collection system - Google Patents
High altitude atmospheric pollutants sample collection system Download PDFInfo
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- CN114264518A CN114264518A CN202111346505.XA CN202111346505A CN114264518A CN 114264518 A CN114264518 A CN 114264518A CN 202111346505 A CN202111346505 A CN 202111346505A CN 114264518 A CN114264518 A CN 114264518A
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Abstract
The invention discloses a high-altitude atmospheric pollutant sample collecting device which comprises a lifting sampling device and a control device, wherein the lifting sampling device is in signal connection with the control device, the lifting sampling device controls the height of the lifting sampling device through a traction rope, a plurality of angle detectors are uniformly fixed on the traction rope, the angle detectors are used for detecting the inclination angle of the current position of the traction rope, and the angle detectors are in signal connection with the control device. After the lift-off sampling device rises to a certain distance, the angle detector can send the angle of the traction rope to the control device, the control device obtains the height difference between the angle detectors through trigonometric function conversion according to the fixed distance between the angle and the angle detector, and the accurate height of the lift-off sampling device is obtained after the height difference is added, so that the detection precision of the air quality is improved.
Description
Technical Field
The invention relates to the field of environment-friendly equipment, in particular to a high-altitude atmospheric pollutant sample collection device.
Background
Along with the enhancement of environmental protection in China, the quality detection of air is more and more strict, so that each link in the air detection needs to be accurately controlled, especially the sampling link of air, if the sampling area has deviation, the air quality can be misjudged, and the targeted management of the environment is influenced.
The sampling of high-altitude gas is generally carried out in a preset altitude range raised by a helium balloon carrying a sampling device, the control of the altitude is generally calculated by the extension length of a traction rope, but the traction rope can be bent due to the influence of air flow, so that the altitude control is extremely inaccurate, the altitude can be converted into the altitude in a mode of detecting air pressure, the accuracy is generally poor, the altitude is easily interfered by strong wind, air humidity, cloud layers and the like, and the altitude accuracy can be in error of dozens of meters or even hundreds of meters; although the towline has been replaced in unmanned aerial vehicle's appearance, most still adopt the mode of atmospheric pressure conversion height, and the error still can be very big, is unfavorable for the accurate assurance of air quality.
Therefore, a new type of high altitude atmospheric pollutant sample collection device is needed to solve the above problems.
Disclosure of Invention
The invention aims to provide a novel technical scheme for high-altitude gas sampling.
According to a first aspect of the invention, the high-altitude atmospheric pollutant sample collection device comprises a lifting sampling device and a control device, wherein the lifting sampling device is in signal connection with the control device, the height of the lifting sampling device is controlled through a traction rope, a plurality of angle detectors are uniformly fixed on the traction rope, the angle detectors are used for detecting the inclination angle of the current position of the traction rope, and the angle detectors are in signal connection with the control device.
Through this scheme, the rising sampling device is rising after certain distance, and the angle detector can send the angle of haulage rope this department to controlling means, and controlling means reachs the difference in height between the angle detector according to the fixed distance between this angle and the angle detector after the trigonometric function conversion, with this difference in height through adding the accurate height that obtains the rising sampling device to help improving the detection precision of air quality.
Preferably, the angle detector comprises a protective cylinder and a detector, the detector being located in the protective cylinder.
Through this scheme, a protection section of thick bamboo can play the guard action to the detector, avoids receiving high air current and cloud cover to the influence of detector, improves the detection precision of detector.
Preferably, the hauling cable comprises a plurality of cable sections, the cable sections and the protective cylinder are alternately arranged, and the end parts of the cable sections and the end parts of the protective cylinder are coaxially fixed.
Through this scheme, make angle detector and haulage rope coaxial arrangement, help reducing the volume, reduce the windage to reduce the wind-force influence that the haulage rope received, help reducing the haulage rope vibrations and rock, improve the precision in the testing process.
Preferably, the detector includes an adaptation section of thick bamboo, angle sensor and weight, the coaxial rotation of an adaptation section of thick bamboo is connected to in the protection section of thick bamboo, one side of an adaptation section of thick bamboo is provided with the counter weight strip, angle sensor fixes to in the adaptation section of thick bamboo, the weight is connected to on angle sensor's the pivot, the swing direction of weight is all the time towards or is kept away from the counter weight strip.
Through this scheme, an adaptation section of thick bamboo can rotate under the action of gravity of counter weight strip, makes the weight only can rotate on the perpendicular with sea level to the accurate contained angle that detects out and sea level, when improving the precision, reduce the horizontal atress to angle sensor, play protection angle sensor's effect.
Preferably, a first gear is fixed on a rotating shaft of the angle sensor, the heavy hammer is connected with a second gear through a connecting rod, a circle center of the second gear is rotatably connected into the adapting cylinder, and the second gear is meshed with the first gear.
Through this scheme, on the mode through gear engagement transmitted the change of weight angle to angle sensor, further avoided rocking of weight to the influence of angle sensor pivot, filter other direction displacements and only remain the contained angle information of vertical direction, when improving the detection precision, further protected angle sensor.
Preferably, the lift-off sampling device comprises a high-altitude balloon and a sampling bottle, wherein the sampling bottle is horizontally arranged and fixed to the bottom of the high-altitude balloon, the sampling bottle comprises a bottle body with two open ends and blocking covers for blocking the two ends of the bottle body, and the blocking covers are connected to a sampling control mechanism.
Through this scheme, after the sampling device that rises to the air reachd accurate height, sampling control mechanism control shutoff lid is opened, helps releasing remaining original air in falling the body to be full of the air under this height, further improve the sampling precision.
Preferably, the sampling bottle is of a shuttle-shaped structure, a fixing block is horizontally and rotatably connected to the bottom of the sampling bottle, and the traction rope is fixed to the fixing block.
Through this scheme, make the sampling bottle in high air current, can keep the opening of body unanimous with the wind direction all the time to remaining original air in the bottle is blown away in the assurance, the sample of gathering is the air under this height completely.
Preferably, the sampling control mechanism comprises a transmission shaft, a driving motor and a sampling control board, the transmission shaft is rotatably connected to the bottle body along the axial direction of the bottle body, and two ends of the transmission shaft are respectively fixed to the eccentric positions of the two plugging covers; the driving motor is meshed with the turbine on the transmission shaft through a worm; the driving motor is electrically connected to the sampling control board, and the sampling control board is connected with the control device.
Through this scheme, the cooperation of turbine worm drives the transmission shaft and rotates to drive the rotatory opening that opens the body both ends of plugging cover and sample, the back antiport that finishes of sampling makes the plugging cover reseal the opening.
Preferably, the control device comprises a power module, a processor, a display and an input module, and the power module, the display, the input module, the lift-off sampling device and the angle detector are all connected to the processor.
Preferably, the hauling cable comprises a supporting layer and a threading pipe, the supporting layer is wrapped outside the threading pipe, and the conducting wire between the lifting sampling device and the control device and the conducting wire between the angle detector and the control device are all arranged through the threading pipe.
Through this scheme, the wire is connected and can is improved sampling precision and reliability, and the supporting layer can also play the effect of protection to wearing the spool when playing main atress part.
According to one embodiment of the disclosure, the high-altitude atmospheric pollutant sample collecting device is used for collecting samples of high-altitude gas, the sampling height can be accurately calculated, the atmospheric pollutant samples at a certain height can be accurately collected, and the high-altitude atmospheric pollutant sample collecting device is beneficial to improving the quality detection precision of the high-altitude gas.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of a high-altitude atmospheric pollutant sample collection device according to an embodiment of the invention.
Fig. 2 is a schematic view of the configuration of the pull-cord of fig. 1.
Fig. 3 is a schematic cross-sectional structure diagram of the angle detector in fig. 2.
Fig. 4 is a schematic view of the structure of the compliant cartridge of fig. 3.
FIG. 5 is a schematic diagram of a connection structure between an angle sensor and a weight according to another embodiment.
FIG. 6 is a schematic diagram of the sample bottle of FIG. 1.
FIG. 7 is a schematic cross-sectional view of the sample bottle of FIG. 6.
Fig. 8 is a block diagram of the circuit structure of the airborne atmospheric pollutant sample collection device in fig. 1.
Fig. 9 is a schematic cross-sectional view of the pull-cord of fig. 2.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Examples
As shown in fig. 1 to 9, the high-altitude atmospheric pollutant sample collecting device in this embodiment includes an ascending sampling device 100 and a control device 200, the ascending sampling device 100 is in signal connection with the control device 200, the ascending sampling device 100 controls the height thereof through a pulling rope 300, a plurality of angle detectors 400 are uniformly fixed on the pulling rope 300, the angle detectors 400 are used for detecting the inclination angle of the current position of the pulling rope 300, and the angle detectors 400 are all in signal connection with the control device 200.
The levitation sampling device comprises a high-altitude balloon 100 or a levitation device such as an unmanned aerial vehicle, in the embodiment, the high-altitude balloon 100 contains helium or hydrogen, and can be lifted to a certain height in the atmosphere. A sampling bottle 120 is fixed at the bottom of the high-altitude balloon 100, and the sampling bottle 120 can be opened and closed under the control of the control device 200 to collect high-altitude gas.
According to the scheme of the embodiment, after the lift-off sampling device 100 is lifted to a certain distance, due to the self weight of the pulling rope 300 and the factors of high-altitude wind power, the pulling rope 300 can be in an inverted parabolic shape, the angle detector 400 can send the angle of each node of the pulling rope 300 to the control device 200, the pulling rope 300 is divided into a plurality of inclined line segments, the control device 200 obtains the height difference between the angle detectors 400 through trigonometric function conversion according to the fixed distance between the angle and the angle detectors 400, the accurate height of the lift-off sampling device 100 is obtained after the height difference is added, and then the collection of high-altitude atmospheric pollutants is carried out, so that the detection accuracy of the air quality is improved.
The pulling rope 300 in this embodiment is wound around a winding roller, and the winding roller is driven manually or electrically to wind or release the pulling rope 300; numbers are drawn on the angle detector 400 to facilitate approximate estimation of the current height according to the numbers, and the number of the angle detector 400 rising to the air is known according to the numbers to facilitate accurate calculation; scales are marked on the traction rope, and the length of the bottommost traction rope extending out can be calculated in an auxiliary mode by reading the scales on the traction rope.
In this embodiment or other embodiments, the angle detector 400 includes a protective cylinder 410 and a detector, the detector is located in the protective cylinder 410, the protective cylinder 410 can protect the detector from being affected by high air flow and cloud cover, and the detection accuracy of the detector is improved. The protective cylinder 410 is a plastic cylinder made of polyethylene, for example, and has certain toughness and light weight. Through holes are formed at the upper and lower ends of the protective cylinder 410 for a circuit to pass through, so as to ensure the electrical connection of the detector and the control device 200.
In this embodiment or other embodiments, the pulling rope 300 includes a plurality of rope portions 310, the rope portions 310 and the protective tube 410 are alternately arranged, and the end portions of the rope portions 310 and the end portions of the protective tube 410 are coaxially fixed, so that the angle detector 400 and the pulling rope 300 are coaxially arranged, which helps to reduce the size and the wind resistance, thereby reducing the wind force influence on the pulling rope 300, helping to reduce the vibration and shaking of the pulling rope 300, and improving the precision in the detection process. The end of the protective cylinder 410 in this embodiment is fixed to the end of the rope section 310 by means of a hoop or the like, which facilitates the detachment and installation.
In this embodiment or other embodiments, the detector includes a cylindrical adaptive cylinder 420, an angle sensor 430, and a weight 440, the adaptive cylinder 420 is coaxially and rotatably connected to the protective cylinder 410, a weight strip 421 is disposed on one side of the adaptive cylinder 420, the angle sensor 430 is fixed to the adaptive cylinder 420, the weight 440 is connected to a rotating shaft of the angle sensor 430, and the swinging direction of the weight 440 is always toward or away from the weight strip 421.
This counter weight strip 421 is metal strip or metal block, inlays to on the lateral wall of adaptation section of thick bamboo 420, and adaptation section of thick bamboo 420 passes through bearing and protection section of thick bamboo 410 coaxial coupling, makes adaptation section of thick bamboo 420 can rotate under the action of gravity of counter weight strip 421, when haulage rope 300 inclines, adaptation section of thick bamboo 420 can take place thereupon and rotate, counter weight strip 421 is the downward orientation in the end, makes weight 440 only can rotate on the perpendicular plane with the sea level, thereby the accurate contained angle that detects and the sea level, when improving the precision, reduce the horizontal atress to angle sensor 430, play the effect of protection angle sensor 430.
The angle sensor 430 is, for example, a potentiometer or an encoder, and can convert the rotation angle of the rotating shaft into an electrical signal, and calculate the rotation angle, and the current inclination angle of the traction rope 300 by voltage detection or decoding.
As shown in fig. 5, in another embodiment, a first gear 431 is fixed on the rotation shaft of the angle sensor 430, the weight 440 is connected to a second gear 432 through a connecting rod 441, the center of the second gear 432 is rotatably connected to the adaptive cylinder 420, and the second gear 432 is meshed with the first gear 431. On the mode through gear engagement transmitted the change of weight 440 angle to angle sensor 430, further avoided rocking of weight 440 to the influence of angle sensor 430 pivot, filter other direction displacements and only remain the contained angle information of vertical direction, when improving the detection precision, further protected angle sensor.
In this embodiment or other embodiments, the lift-off sampling device 100 includes a high-altitude balloon 110 and a sampling bottle 120, the sampling bottle 120 is horizontally disposed and fixed to the bottom of the high-altitude balloon 110, the sampling bottle 120 includes a bottle body 121 with two open ends and a blocking cover 122 blocking two ends of the bottle body 121, and the blocking cover 122 is connected to a sampling control mechanism; the sampling control mechanism is connected to the control device 200.
When the sampling device 100 in the air is lifted to the accurate height, the sampling control mechanism controls the blocking cover 122 to be opened, the bottle body 121 with the two open ends is beneficial to releasing the residual original air in the bottle body in the high air, the blocking cover 122 is closed after the air at the height is filled in a certain time, and the sampling precision is further improved.
In this embodiment or other embodiments, the sampling bottle 120 is in a shuttle shape, a fixing block 124 is horizontally and rotatably connected to the bottom of the sampling bottle 120, and the pulling rope 300 is fixed to the fixing block 124. This fixed block 124 rotates to be connected to the sampling bottle 120 bottom through the bearing for example, and haulage rope 300 is in fixed connection back with fixed block 124, and sampling bottle 120 can keep the opening of body 121 unanimous with the wind direction all the time in high air current, makes the air current pass body 121 to guarantee to blow away remaining original air in the bottle, make the sample of gathering totally be the air under this height, avoid the air to remain.
In this embodiment, the sampling bottle 120 is divided into two chambers which are parallel to each other along the axial direction, one chamber is used for collecting an air sample, and the other chamber is provided with a particulate matter sampling film for collecting particulate matters in the high-altitude atmosphere.
In this embodiment or other embodiments, the sampling control mechanism includes a transmission shaft 131, a driving motor 132, and a sampling control board 133, the transmission shaft 131 is connected to the bottle body 121 in an axial direction of the bottle body 121, and two ends of the transmission shaft 131 are respectively fixed to the two eccentric portions of the two blocking caps 122; the driving motor 132 is meshed with the worm wheel on the transmission shaft 121 through a worm; the driving motor 132 is electrically connected to the sampling control board 133, and the sampling control board 133 is in signal connection with the control device 200 in a wired or wireless manner. The sampling control means may be provided with a power source and connected only to the control device 200 by a signal, or may be supplied with power from the control device 200 to operate the drive motor 132.
The worm-gear is matched with the worm gear to drive the transmission shaft 131 to rotate, so that the plugging cover 122 is driven to rotate to open the openings at the two ends of the bottle body 121 for sampling, and the opening is sealed again by the plugging cover 122 through reverse rotation after sampling is finished.
In this embodiment or other embodiments, the control device 200 includes a power module 220, a processor 210, a display 230, and an input module 240, wherein the power module 220, the display 230, the input module 240, the lift-off sampling device 100, and the angle detector 400 are all connected to the processor 210. The display 230 is configured to display a current height value, the input module 240 is configured to input various parameter information (for example, a signal for controlling the opening and closing of the ascent sampling apparatus 100, and a number of the last ascent angle detector 400, etc.), and the processor 210 is configured to receive an angle signal of the angle sensor 430, calculate the angle signal to obtain height information, and send the height information to the display 230 for displaying. The processor 210 is further configured to convert and send the signal of the input module 240 to the lift-off sampling apparatus 100 to actuate the driving motor 132.
The processor 210 further includes an RS485 remote communication module for processing the electrical signals of the angle sensors 430 and sending control signals to the sampling control board 133, so as to implement remote signal transmission.
In this embodiment or other embodiments, the pulling rope 300 includes a supporting layer 311 and a threading pipe 312, the supporting layer 311 is wrapped outside the threading pipe 312, the supporting layer 311 is made of a nylon braided rope or the like and has certain strength and toughness, the threading pipe 312 is made of a flexible plastic pipe made of polyethylene, and the conducting wires between the lifting sampling device 100 and the control device 200 and the conducting wires between the angle detector 430 and the control device 200 are all arranged through the threading pipe 312. The wire connection can improve sampling precision and reliability, and the support layer 311 can protect the threading pipe 312 while playing a main stressed part.
In other embodiments, the hauling cable 300 is directly woven from nylon, and the wires are arranged in a mixture with the nylon cable by weaving.
When the device is used, the device is placed in a region to be sampled, the number of the angle detectors needing to be lifted is roughly estimated according to the distance between the angle detectors and the height needing to be sampled, the high-altitude balloon is released by rotating the winding roller, and the number of the lifted angle detectors is observed until the preset number is reached.
After the serial number of the last lift-off angle detector is input through the input module, the processor collects the numerical values of all lift-off angle sensors, calculates the accurate height of the current lift-off sampling device, adjusts the height according to the accurate height, winds or releases the traction rope until the required height is reached, reads the numerical value on the bottommost rope section, controls the extending length to reach the required height, and controls the sampling control mechanism to act for sampling.
The high-altitude atmospheric pollutant sample collecting device is used for collecting the high-altitude gas sample, can accurately calculate the sampling height, can accurately collect the gas sample at a certain height, and is beneficial to improving the quality detection precision of the high-altitude gas.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. The utility model provides a high altitude atmospheric pollutants sample collection system, includes lift-off sampling device and controlling means, lift-off sampling device with signal connection between the controlling means, its height is controlled through the haulage rope to the lift-off sampling device, its characterized in that, evenly be fixed with a plurality of angle detection wares on the haulage rope, the angle detection ware is used for detecting the inclination of haulage rope current position, the angle detection ware all with controlling means signal connection.
2. The high altitude atmospheric pollutant sample collection device of claim 1, characterized in that, the angle detector comprises a protective cylinder and a detector, the detector is located in the protective cylinder.
3. The high-altitude atmospheric pollutant sample collection device according to claim 2, wherein the traction rope comprises a plurality of rope sections, the rope sections and the protection cylinder are alternately arranged, and the end parts of the rope sections and the end parts of the protection cylinder are coaxially fixed.
4. The device for collecting samples of high altitude atmospheric pollutants as claimed in claim 3, wherein the detector comprises an adaptive cylinder, an angle sensor and a weight, the adaptive cylinder is coaxially and rotatably connected to the protective cylinder, a weight strip is arranged on one side of the adaptive cylinder, the angle sensor is fixed to the adaptive cylinder, the weight is connected to a rotating shaft of the angle sensor, and the swinging direction of the weight is always towards or away from the weight strip.
5. The high altitude atmospheric pollutant sample collection device of claim 4, characterized in that a first gear is fixed on the rotating shaft of the angle sensor, the weight is connected with a second gear through a connecting rod, the center of the second gear is rotatably connected to the adaptive cylinder, and the second gear is meshed with the first gear.
6. The high-altitude atmospheric pollutant sample collection device according to claim 1, wherein the lift-off sampling device comprises a high-altitude balloon and a sampling bottle, the sampling bottle is horizontally arranged and fixed to the bottom of the high-altitude balloon, the sampling bottle comprises a bottle body with two open ends and blocking covers for blocking two ends of the bottle body, and the blocking covers are connected to a sampling control mechanism.
7. The high-altitude atmospheric pollutant sample collection device as claimed in claim 6, wherein the sampling bottle is of a shuttle-shaped structure, a fixing block is horizontally and rotatably connected to the bottom of the sampling bottle, and the traction rope is fixed to the fixing block.
8. The high-altitude atmospheric pollutant sample collection device according to claim 6, wherein the sampling control mechanism comprises a transmission shaft, a driving motor and a sampling control board, the transmission shaft is rotatably connected to the bottle body along the axial direction of the bottle body, and two ends of the transmission shaft are respectively fixed to the eccentric positions of the two plugging covers; the driving motor is meshed with the turbine on the transmission shaft through a worm; the driving motor is electrically connected to the sampling control board, and the sampling control board is connected with the control device.
9. The high altitude atmospheric pollutant sample collection device of claim 1, wherein the control device comprises a power module, a processor, a display, and an input module, the power module, the display, the input module, the levitation sampling device, and the angle detector all being connected to the processor.
10. The high-altitude atmospheric pollutant sample collection device according to claim 1, wherein the hauling cable comprises a support layer and a threading pipe, the support layer is wrapped outside the threading pipe, and a lead between the lift-off sampling device and the control device and a lead between the angle detector and the control device are arranged through the threading pipe.
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| CN214309770U (en) * | 2020-12-31 | 2021-09-28 | 江苏坤实检测技术有限公司 | Air sampling device for waste gas detection |
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