CN110758737A

CN110758737A - Amphibious sampling detection unmanned aerial vehicle

Info

Publication number: CN110758737A
Application number: CN201911054591.XA
Authority: CN
Inventors: 赵忆轩
Original assignee: Individual
Current assignee: Boxing Xingye Intelligent New Material Co ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-02-07
Anticipated expiration: 2039-10-31
Also published as: CN112414774A; CN112414774B; CN112432816B; CN112432816A; CN110758737B

Abstract

The invention discloses an amphibious sampling detection unmanned aerial vehicle, which comprises a central control box, a sampling box, support legs, propellers and sampling pipes, wherein the support legs extend out of the side face of the central control box along the horizontal direction to the periphery, the propellers are arranged on the upper parts of the support legs, the sampling box is arranged at the bottom of the central control box, the sampling pipes are arranged on the sampling box in a downward mode, the lower ends of the sampling pipes are immersed in water during sampling, and the sampling box collects water quality samples through the sampling pipes in an upward suction mode and stores the water quality samples in the sampling box. The sampling box includes case box, pipe support, a plurality of sample cell and joint, and the pipe support setting has arranged the sample cell in the case box on the pipe support, and the sample cell is connected with the sampling tube through the joint, and the sample cell is the vacuum state in the intraductal original, and the sample cell is inhaled the mode with the vacuum and is gathered quality of water sample via the sampling tube. Through the power when using the vacuum of sample cell self as the sampling, no longer use traditional mechanical type pump class as water sampling power, unmanned aerial vehicle's weight alleviates greatly, and the flight is rapid, and the structure is succinct.

Description

Amphibious sampling detection unmanned aerial vehicle

Technical Field

The invention relates to the field of unmanned aerial vehicles, in particular to an amphibious sampling detection unmanned aerial vehicle.

Background

Unmanned aerial vehicles play an increasingly important role in obtaining water quality samples of the front roads for river and lake treatment, and are applied more and more.

Among the prior art, often through the mode of hanging, for example in CN201610127943.X water sampling unmanned aerial vehicle's the patent, through hanging in midair a immersible pump as the sampling initiative, unmanned aerial vehicle is loaded down with trivial details complicated, and is unstable during the flight moreover, and the sampling hose need have sufficient intensity so that can bear immersible pump weight, because self is the hose again, takes place to warp scheduling problem very easily, and it is inconvenient to use.

Disclosure of Invention

The invention aims to provide an amphibious sampling detection unmanned aerial vehicle, which aims to solve the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides an amphibious sampling detection unmanned aerial vehicle, includes well accuse case, sampling box, support leg, screw and sampling pipe, and well accuse case side is followed the horizontal direction and is stretched out a plurality of support legs all around, and the screw is installed on support leg upper portion, and the sampling box setting is in the bottom of well accuse case, and the sampling pipe is installed downwards to the sampling box, and the sampling pipe lower extreme is in the submergence when the sampling, and the sampling box is inside in order to inhale the mode via sampling pipe collection quality of water sample and leave in self.

The screw is the part that provides lift for unmanned aerial vehicle, receives well control box control and power supply, and well control box receives unmanned aerial vehicle controller's control again, and the landing foot point when the support leg is unmanned aerial vehicle takes off and descends. According to the invention, a suspended water delivery pump is omitted, and a suction-up mode is adopted for sampling, so that the weight of the machine body can be effectively controlled, the energy required by the flight of the unmanned aerial vehicle is greatly reduced, and not only are the wearing parts of the unmanned aerial vehicle reduced, but also the resource consumption is saved. When the unmanned aerial vehicle is used, an operator controls the unmanned aerial vehicle to fly to a sampling point, then the height is reduced, the lower end of the sampling pipe is immersed in water, then the water is sucked upwards, and the electric part and the propeller part of the unmanned aerial vehicle are not close to the water surface so as to avoid interference or unstable flight; after the water sample collection is finished, the operator controls the unmanned aerial vehicle to fly away, and the unmanned aerial vehicle flies back to the shutdown platform or goes to the next sampling point to be collected.

Further, the sampling box includes case, pipe support, a plurality of sample cell and connects, and the pipe support setting has arranged the sample cell in the case, and the sample cell is connected with the sampling tube through connecting, and the sample cell is the vacuum state in the beginning, and the sample cell is inhaled the mode with the vacuum and is gathered quality of water sample via the sampling tube.

The sampling pipe comprises a pipe frame, a plurality of sample pipes, a plurality of sampling pipes, a plurality of pipe body marks, a plurality of pipe body positions and a plurality of sampling points. It is vacuum inside when the sample cell dress pipe support, during the sampling, the vacuum that utilizes the sampling tube just can absorb the water of below, a standard atmospheric pressure corresponds the water column of rice about, that is to say, the sample cell has 90% vacuum at first, then consider the volume that some air of reserving caused on the overflow pipeline when inhaling occupied, it highly has a five meters to accomplish completely to inhale, do carefully through inhaling the pipeline, the sample cell is done roughly and can reduce the influence of reserving the air, and during the use, it is very easy just to accomplish to hover to unmanned aerial vehicle to the one to two meters of surface of water top. Therefore, the suction power of the invention during sampling is directly from the vacuum degree carried in the sample tube, so that the mechanical power for assisting the water body to ascend is not required to be provided, such as a careful centrifugal pump, a plunger pump, a diaphragm pump and the like, and the weight of the device is greatly reduced.

Further, as mentioned above, the sample tube has a vacuum degree, and can be used as a power for sucking up the water body, but it is additionally necessary to pay attention to the problems that the sample tube is established and disconnected with an overflow channel of the water body below the unmanned aerial vehicle, and the sample tube after sampling is sealed, so the invention adopts the following butt-joint scheme:

the sampling box also comprises an indexing plate, the indexing plate is arranged in the box body, the indexing plate is provided with a rotary drive, the rotary axis of the indexing plate is vertical, the joint is arranged at the outer edge of the indexing plate, the pipe frame is provided with a lifting drive, a plurality of sample tubes arranged on the pipe frame are circumferentially arranged by taking the rotary axis of the indexing plate as a central line, and one of the sample tubes is positioned on the square joint;

the sample tube comprises a tube body, a gland, a polished rod nail, a spring, a sealing gasket and a sealing ring, wherein an inlet and outlet hole is formed in the end face of one end of the tube body, the rod part of the polished rod nail is inserted into the center of the end of the tube body, the head of the polished rod nail and the end face of the tube body are directly provided with the spring, the polished rod nail is a part similar to a screw, only the rod part thread without the screw is arranged, the head of the polished rod nail is smooth and cylindrical, the gland is in threaded connection with one end of the tube body, the sealing gasket is arranged on an axial gap, the head part of the polished rod nail is pressed by the inner surface of the gland, the sealing ring is arranged between the;

the joint comprises a pipe joint and a rubber sleeve, the pipe joint comprises a bottom section and a column head section arranged on the end face of the bottom section, the diameter of the column head section is smaller than that of a through hole in the end face of a gland, a overflowing hole is formed in the bottom section to connect the lower end of the bottom section with the root of the column head section, the lower end of the bottom section is connected with a sampling pipe, the rubber sleeve is placed on the upper surface of the bottom section and is concentrically arranged with the column head section, and the rubber sleeve is provided with a cylindrical.

The dividing plate rotates to enable the joints to move to the positions below the sample tubes arranged on the circumference of the tube frame respectively to serve as selection actions of the sample tubes, and the sample tubes are driven by the tube frame to move downwards and are in butt joint with the joints below;

at the beginning, the sample tube is in a self-sealing state, the spring downwards extrudes the polished rod nail and abuts against the sealing ring, so that the path between the interior of the tube body and the central hole of the end face of the gland is sealed, the path between the gland and the connection thread of the tube body is also sealed by the sealing gasket in a compressed state, and the vacuum in the tube body is stored;

when the sample tube is needed to be used for sampling, the sample tube descends to contact with the joint, firstly, the upper end surface of the rubber sleeve is contacted with the lower surface of the gland in a loose state, so that a path of a water body immersed in the lower end of the sample tube ascends along the sample tube, passes through the joint and reaches the end surface of the gland is isolated from ambient air, an absorption channel is preliminarily established, then, the sample tube continues to descend, the rubber sleeve is pressed downwards and provides more reliable sealing, then, the lower end surface of the head of the polished rod nail is contacted with the upper surface of the column head section and is pushed open, so that the space inside the tube body is communicated with the through-flow hole, the absorption channel is punched, the water body around the lower end of the sample tube starts to be absorbed due to the vacuum degree in the tube body, after the sampling is finished, the sample tube is driven by the tube frame to ascend, the column head section is firstly separated from the lower, and disconnecting the communication path between the interior of the tube body and the overflowing hole, and then separating the upper end surface of the rubber sleeve from the lower end surface of the gland to realize the complete separation of the joint and the sample tube. The water sample in the sample tube is sealed and stored, and redundant water in the joint flows back to the water area along the sampling tube, and the pipeline path is vacated and moved so that the sampling process of next time.

Furthermore, the lower ends of the support legs are provided with buoys. Under the general situation, unmanned aerial vehicle flies above the water surface, but need stop on the water surface or the very closely surface of water of subsides at a short time, at this moment, in order to prevent that the unmanned aerial vehicle body from falling into the aquatic, the flotation pontoon can provide reliable buoyancy, bumps some proruption situations, and when falling down as the unmanned aerial vehicle energy is not enough, also can get up the effect of protection unmanned aerial vehicle. The volume of the pontoon is dependent on the weight of the entire flight portion and is taken into account when the weight is in a fully loaded state.

Further, the sampling pipe lower extreme still is equipped with the sampling head, and sampling head density is greater than water, and when unmanned aerial vehicle fell on the surface of water, the sampling head was submerged in water. The sampling head can let the sampling pipe lower extreme immerse the certain degree of depth under the surface of water reliably, prevents that some suspended solids on water surface from blockking the sampling pipe import, also prevents that the sampling pipe from failing to immerse the water and sampling fails.

Preferably, the sampling head is provided with a filter screen, and the sampling head filters the water body entering the sampling pipe. The filter screen filters bulky rubbish debris, prevents that debris from getting into the sampling pipe and causing the jam. If parameters such as suspended matter content and particulate matter content do not need to be detected in the water quality detection parameters, the filter screen can be made finer, and most of particle impurities are blocked.

As optimizing, unmanned aerial vehicle still includes the position mark, and the position mark carries out wireless connection with well accuse case, and during the use, the position mark is placed around the waters, and position mark quantity more than or equal to is three. The unmanned aerial vehicle generally uses satellite signals such as GPS (global positioning system), Beidou and the like to confirm position information and navigation, but in some places, the GPS signals are weak, the precision of civil GPS signals is only about ten meters, and the precision is insufficient when accurate fixed-point sampling is needed, so that an auxiliary positioning means is added in the unmanned aerial vehicle, and the accurate fixed-point sampling point only needs to acquire horizontal position information because the water area can be almost horizontal. The position mark is wirelessly connected with a central control box of the flight part of the unmanned aerial vehicle, the central control box acquires distance information with the position mark, after the central control box acquires a distance signal with one position mark, the position of the central control box is a circle with the position mark as the center of the circle, after the distance signal with two position marks is acquired, the position of the central control box is an intersection point of two circles, the position is locked into two points, and after the distance signal with a third position mark is acquired, the position can be completely confirmed, so that at least three position marks need to be arranged in a water area to be sampled by using the auxiliary positioning means. The position mark can be a transmitter which sends out signals with specific types and strength, and the central control box obtains the signals and then obtains the transmission distance by calculating the attenuation degree.

For optimization, the number of position markers is four. The fourth position mark can provide a check signal for the position parameter, the first three position marks already confirm the accurate position of the flight part of the unmanned aerial vehicle, so that the signal generated by the fourth position mark on the central control box can be automatically obtained in advance, the signal is compared with the actual fourth position mark signal, if the signal is consistent with the actual fourth position mark signal, no obstacle exists, and if the signal is inconsistent with the actual fourth position mark signal, an alarm is sent to an operator to prompt whether the signal part of the position mark and the central control box are in fault or not. What defaulted earlier is that unmanned aerial vehicle flying height's variation value is less than waters scope length far away, and if the waters is less, then altitude information also can exert an influence to the signal value of position mark, and at this moment, need the fourth position mark to confirm the altitude information of unmanned aerial vehicle flight part, and for the check, need set up the fifth position mark.

Preferably, the rubber sleeve is internally provided with a spring rib. The spring ribs again provide axial spring force to the rubber sleeve and prevent the rubber sleeve from deforming in other ways than by axial compression.

And optimally, the inner surface and the outer surface of the sampling pipe, the sampling head and the joint are coated with hydrophobic layers. And the hydrophobic layer reliably drains water, and after one-time sampling is finished, a water body is not remained on the sampling channel, so that the water body is prevented from being mixed into the water body for next sampling.

Compared with the prior art, the invention has the beneficial effects that: according to the unmanned aerial vehicle, the vacuum of the sample tube is used as power during sampling, and the traditional mechanical pumps are not used as power for sampling water, so that the unmanned aerial vehicle is greatly reduced in weight, fast in flight and simple in structure; the polished rod nail is extruded by the vacuum in the tube body through the spring to tightly abut against the sealing ring for sealing, the sealing is reliable, the establishment of a vacuum sucking channel can be completed only by pushing the polished rod nail open through the column head section of the tube joint during sampling, the establishment and the disconnection of the channel only need to be realized by the lifting motion of the tube frame, the operation structure is very easy to realize, and the structure is simple; the position mark is used as an auxiliary positioning means of the flight part of the unmanned aerial vehicle, and can provide accurate fixed point positioning for the unmanned aerial vehicle under the conditions of insufficient precision and poor signal of positioning means such as a GPS.

Drawings

In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a schematic view of the internal structure of the sampling box of the present invention;

FIG. 4 is a schematic diagram of the butt sampling principle of the sample tube and the joint according to the present invention;

FIG. 5 is a view A of FIG. 4 showing the butt joint structure of the sample tube and the joint during sampling;

FIG. 6 is a butt structure of the sample tube and the joint in a non-sampling state of view A in FIG. 4;

fig. 7 is a schematic layout of position markers from a top view according to the present invention.

In the figure: 1-central control box, 2-sampling box, 21-box, 22-pipe frame, 23-sample pipe, 231-pipe body, 2311-inlet and outlet hole, 232-gland, 233-polished rod nail, 234-spring, 235-sealing gasket, 236-sealing ring, 24-dividing plate, 25-joint, 251-pipe joint, 2511-bottom section, 2512-column head section, 2513-overflowing hole, 252-rubber sleeve, 2521-spring rib, 3-bracket leg, 4-propeller, 5-buoy, 6-sampling pipe, 7-sampling head and 9-position mark.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, 2, amphibious sampling detection unmanned aerial vehicle, including well control box 1, sampling box 2, support leg 3, screw 4 and sampling pipe 6, well control box 1 side is along the horizontal direction to stretching out a plurality of support legs 3 all around, screw 4 is installed on 3 upper portions of support leg, sampling box 2 sets up the bottom at well control box 1, sampling pipe 6 is installed down to sampling box 2, the immersion water of 6 lower extremes of sampling pipe when the sampling, sampling box 2 is inside in order to inhale the mode through the sampling pipe 6 quality of water sample of gathering and deposit in self.

Screw 4 is the part that provides lift for unmanned aerial vehicle, receives well control box 1 control and power supply, and well control box 1 receives unmanned aerial vehicle controller's control again, and support leg 3 is the landing foot point when unmanned aerial vehicle takes off and descends. According to the invention, a suspended water delivery pump is omitted, and a suction-up mode is adopted for sampling, so that the weight of the machine body can be effectively controlled, the energy required by the flight of the unmanned aerial vehicle is greatly reduced, and not only are the wearing parts of the unmanned aerial vehicle reduced, but also the resource consumption is saved. When the unmanned aerial vehicle is used, an operator controls the unmanned aerial vehicle to fly to a sampling point, then the height is reduced, the lower end of the sampling pipe 6 is immersed in water, then the water is sucked upwards, and the electric part of the unmanned aerial vehicle and the propeller 4 are not close to the water surface so as to avoid interference or unstable flight; after the water sample collection is finished, the operator controls the unmanned aerial vehicle to fly away, and the unmanned aerial vehicle flies back to the shutdown platform or goes to the next sampling point to be collected.

As shown in fig. 3, the sampling box 2 includes a box 21, a pipe frame 22, a plurality of sample tubes 23 and a connector 25, the pipe frame 22 is disposed in the box 21, the sample tubes 23 are disposed on the pipe frame 22, the sample tubes 23 are connected to the sampling tube 6 through the connector 25, the interior of the sample tubes 23 is initially in a vacuum state, and the sample tubes 23 are used for collecting water quality samples through the sampling tube 6 in a vacuum suction manner.

The plurality of sample tubes 23 respectively collect water samples at different sampling points, tube body marks are respectively made, the tube body marks correspond to the sampling points one by one, and after sampling in one period is completed, an operator takes down all the sample tubes 23 from the tube frame 22 and sends the sample tubes to a laboratory for sample determination and water quality information acquisition. It is vacuum inside when pipe support 22 is adorned to sample cell 23, during the sampling, utilize the vacuum of sampling cell 23 just can absorb the water of below, a standard atmospheric pressure corresponds 10 meters water column approximately, that is to say, sample cell 23 has 90% vacuum at first, then consider the volume that some air that remain on the flow pipeline caused and occupy when inhaling, it can accomplish completely to inhale to highly have a five meters, do carefully through inhaling the pipeline, sample cell 23 does thick influence that can reduce the air of reserving, and during the use, it can accomplish very easily to hover to one to two meters above the surface of water with unmanned aerial vehicle. Thus, the suction power of the present invention during sampling is directly derived from the vacuum degree carried in the sample tube 23 itself, so that there is no need to provide mechanical power for assisting the water body to rise, such as a careful centrifugal pump, a plunger pump, a diaphragm pump, etc., and the weight of the device is greatly reduced.

As mentioned above, the sample tube 23 has a vacuum degree, and can be used as a power for sucking water, but it should be noted that the sample tube 23 is connected to or disconnected from an overflow channel of the water below the unmanned aerial vehicle, and the sample tube 23 after sampling is sealed, so the present invention adopts the following butt-joint scheme:

as shown in fig. 3 to 6, the sampling box 2 further includes an index plate 24, the index plate 24 is disposed in the box 21, the index plate 24 has a rotation drive, a rotation axis of the index plate 24 is vertical, the connector 25 is mounted at an outer edge of the index plate 24, the tube rack 22 has a lifting drive, a plurality of sample tubes 23 mounted on the tube rack 22 are circumferentially arranged with the rotation axis of the index plate 24 as a center line, and one of the sample tubes 23 is located on the square of the connector 25;

the sample tube 23 comprises a tube body 231, a gland 232, a polished rod nail 233, a spring 234, a sealing gasket 235 and a sealing ring 236, wherein an access hole 2311 is formed in the end face of one end of the tube body 231, the rod part of the polished rod nail 233 is inserted in the center of one end of the tube body 231 provided with the access hole 2311, the spring 234 is directly arranged on the head part of the polished rod nail 233 and the end face of the tube body 231, the polished rod nail 233 is a part similar to a screw, only the rod part thread of the screw is not provided, the head part of the polished rod nail 233 is smooth cylindrical, the gland 232 is in threaded connection with one end of the tube body 231, the sealing gasket 235 is arranged on an axial gap, the head part of the polished rod nail 233 is pressed by the inner surface of the gland 232, the sealing ring 236 is;

the joint 25 comprises a pipe joint 251 and a rubber sleeve 252, the pipe joint 251 comprises a bottom section 2511 and a column head section 2512 arranged on the end face of the bottom section 2511, the diameter of the column head section 2512 is smaller than that of a through hole on the end face of a gland 232, an overflowing hole 2513 is arranged inside the bottom section 2511 to connect the lower end of the bottom section 2511 with the root of the column head section 2512, the lower end of the bottom section 2511 is connected with a sampling pipe 6, the rubber sleeve 252 is placed on the upper surface of the bottom section 2511 and is arranged concentrically with the column head section 2512, and the rubber sleeve 252 has a cylindrical.

As shown in fig. 3, the index plate 24 rotates to allow the joints 25 to move to the lower portions of the sample tubes 23 arranged circumferentially on the tube rack 22, respectively, as a selecting action of the sample tubes 23, and the sample tubes 23 are driven by the tube rack 22 to move downwards and contact with the joints 25 below to perform a butt joint action of the sample tubes 23;

as shown in fig. 6, initially, the sample tube 23 is in a self-sealing state, the spring 234 presses the polished rod nail 233 downward against the sealing ring 236, so that the path between the interior of the tube 231 and the central hole of the end face of the gland 232 is sealed, and the connection thread path between the gland 232 and the tube 231 is also sealed by the sealing gasket 235 in a compressed state, so that the vacuum in the tube 231 is preserved;

as shown in fig. 5, when the sample tube 23 is needed to be used for sampling, the sample tube 23 is lowered to contact with the connector 25, and first, the upper end surface of the rubber sleeve 252 in a loose state contacts with the lower surface of the gland 232, so that the water body immersed in the lower end of the sample tube 6 rises along the sample tube 6, passes through the connector 25, and is isolated from the ambient air in the path reaching the end surface of the gland 232, and an upper suction channel is initially established, and then, the sample tube 23 continues to be lowered, the rubber sleeve 252 is pressed down and provides more reliable sealing, then, the lower end surface of the head of the screw 233 contacts with the upper surface of the column head section 2512 and is pushed open, so that the space inside the tube body 231 is communicated with the through-flow hole 2513, the upper suction channel is opened, the water body around the lower end of the sample tube 6 starts to be sucked up due to the vacuum degree in the tube body 231, the flow channel of the water body is as shown by the thick black, the column head section 2512 is firstly separated from the lower end face of the head of the polish rod nail 233, the lower end face of the polish rod nail 233 is contacted with the sealing ring 236 again, the communication path between the interior of the tube body 231 and the overflowing hole 2513 is disconnected, then the upper end face of the rubber sleeve 252 is separated from the lower end face of the gland 232, the joint 25 and the sample tube 23 are completely separated, and the separation state shown in fig. 6 is returned again. The water sample in the sample tube 23 is sealed and stored, and the surplus water in the joint flows back to the water area along the sampling tube 6, so that the pipeline path is moved for the next sampling process.

As shown in fig. 2, the lower end of the support leg 3 is provided with a buoy 5. Under the general situation, unmanned aerial vehicle flies above the water surface, but sometimes need to stop on the water surface or the very closely surface of water of subsides, and at this moment, in order to prevent that the unmanned aerial vehicle body from falling into the aquatic, flotation pontoon 5 can provide reliable buoyancy, bumps some proruption situations, and when falling down as the unmanned aerial vehicle energy is not enough, also can get up the effect of protection unmanned aerial vehicle. The volume of the pontoon 5 depends on the weight of the entire flight portion and is considered to be the weight in the fully loaded state.

As shown in fig. 1 and 2, the lower end of the sampling pipe 6 is also provided with a sampling head 7, the density of the sampling head 7 is greater than that of water, and when the unmanned aerial vehicle falls on the water surface, the sampling head 7 sinks into the water. Sampling head 7 can let the sampling pipe 6 lower extreme immerse certain degree of depth under the surface of water reliably, prevents that some suspended solids on water surface from blockking sampling pipe 6 import, also prevents that sampling pipe 6 from failing to immerse the water and sampling fails.

The sampling head 7 is provided with a filter screen, and the sampling head 7 filters the water body entering the sampling pipe 6. The filter screen filters bulky rubbish debris, prevents that debris from getting into sampling pipe 6 and causing the jam. If parameters such as suspended matter content and particulate matter content do not need to be detected in the water quality detection parameters, the filter screen can be made finer, and most of particle impurities are blocked.

As shown in fig. 7, the unmanned aerial vehicle further comprises a position mark 9, the position mark 9 is in wireless connection with the central control box 1, when the unmanned aerial vehicle is used, the position mark 9 is placed around the water area, and the number of the position marks 9 is more than or equal to three. The unmanned aerial vehicle generally uses satellite signals such as GPS (global positioning system), Beidou and the like to confirm position information and navigation, but in some places, the GPS signals are weak, the precision of civil GPS signals is only about ten meters, and the precision is insufficient when accurate fixed-point sampling is needed, so that an auxiliary positioning means is added in the unmanned aerial vehicle, and the accurate fixed-point sampling point only needs to acquire horizontal position information because the water area can be almost horizontal. The position mark 9 is wirelessly connected with the central control box 1 of the flight part of the unmanned aerial vehicle, the central control box 1 acquires the distance information with the position mark 9, after the central control box 1 acquires the distance signal with one position mark 9, the position of the central control box is a circle with the position mark 9 as the center of the circle, after the distance signals with two position marks 9 are acquired, the position of the central control box is the intersection point of the two circles, the position is locked into two points, and after the distance signal with the third position mark 9 is acquired, the position can be completely confirmed, so that by using the auxiliary positioning means, at least three position marks 9 are required to be arranged in the water area to be sampled. The position mark 9 can be a transmitter which sends out signals with specific types and intensity, and the central control box 1 obtains the signals and then obtains the transmission distance by calculating the attenuation degree; the existing electronic map is used before the position mark 9 is placed and the position positioning processing, the position mark 9 is placed at the positions after the proper positions are selected as reference points on the map, and then the longitude and latitude coordinates of the positions are input into the central control box 1 to be used as original reference data.

The position markers 9 are four in number. The fourth position mark 9 can provide a check signal for the position parameter, the first three position marks 9 already confirm the accurate position of the flight part of the unmanned aerial vehicle, so that the signal generated by the fourth position mark 9 on the central control box 1 can be automatically obtained in advance, the signal is compared with the actual signal of the fourth position mark 9, if the signal is consistent with the signal of the actual fourth position mark 9, no obstacle exists, and if the signal is inconsistent with the actual signal of the fourth position mark 9, an alarm is sent to an operator to prompt whether the signal parts of the position mark 9 and the central control box 1 need to be checked to be in fault. What defaulted earlier is that unmanned aerial vehicle flying height's variation value is less than waters scope length far away, and if the waters is less, then altitude information also can exert an influence to the signal value of position mark 9, and at this moment, need fourth position mark 9 to confirm the altitude information of unmanned aerial vehicle flight part, and for the check, need set up fifth position mark 9.

As shown in fig. 5, a spring rib 2521 is provided in the rubber bushing 252. The spring ribs 2521 again provide the rubber sleeve 252 with an axial spring force and prevent the rubber sleeve 252 from deforming in other forms than the axial compression deformation.

The inner and outer surfaces of the sampling tube 6, the sampling head 7 and the joint 25 are coated with hydrophobic layers. And the hydrophobic layer reliably drains water, and after one-time sampling is finished, a water body is not remained on the sampling channel, so that the water body is prevented from being mixed into the water body for next sampling.

The main operation process of the device is as follows: unmanned aerial vehicle flies by ground control person's control, after flying the sampling point, the height is reduced, let sampling head 7 immerse in water, graduated plate 24 is rotatory, select sample tube 23 that is used for depositing the sample, let joint 25 rotate under this sample tube 23, then pipe support 22 moves down, sample tube 23 and joint 25 contact, owing to have the vacuum in the body 231, thereby come and leave in body 231 with the water suction around the sampling tube 6 lower extreme, the back of finishing sampling, pipe support 22 shifts up, sample tube 23 and joint 25 throw off, sample tube 23 reentrant sealed up the state of depositing, wait for the staff to take.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. An amphibious sampling detection unmanned aerial vehicle is characterized in that: unmanned aerial vehicle includes well accuse case (1), sampling box (2), support leg (3), screw (4) and sampling pipe (6), well accuse case (1) side is along horizontal direction to stretching out a plurality of support legs (3) all around, screw (4) are installed on support leg (3) upper portion, sampling box (2) set up in the bottom of well accuse case (1), and sampling pipe (6) are installed down to sampling box (2), sampling pipe (6) lower extreme submerge when the sampling, sampling box (2) are in order to inhale the mode via sampling pipe (6) water quality sample and leave in self inside.

2. An amphibious sample detection drone according to claim 1, characterised in that: sample box (2) include case (21), pipe support (22), a plurality of sample tube (23) and joint (25), pipe support (22) set up in case (21), have arranged sample tube (23) on pipe support (22), and sample tube (23) are connected with sample tube (6) through joint (25), and the sample tube (23) is interior to be vacuum state, and sample tube (23) are inhaled the mode with the vacuum and are gathered quality of water sample via sample tube (6).

3. An amphibious sample detection drone according to claim 2, characterised in that: the sampling box (2) further comprises an index plate (24), the index plate (24) is arranged in the box body (21), the index plate (24) is provided with a rotary drive, the rotary axis of the index plate (24) is vertical, the joint (25) is installed on the outer edge of the index plate (24), the pipe frame (22) is provided with a lifting drive, a plurality of sample tubes (23) installed on the pipe frame (22) are circumferentially arranged by taking the rotary axis of the index plate (24) as a central line, and one sample tube (23) is located on the square of the joint (25);

the sample tube (23) comprises a tube body (231), a gland (232), a polish rod nail (233), a spring (234), a sealing gasket (235) and a sealing ring (236), wherein an access hole (2311) is formed in one end face of the tube body (231), a rod part of the polish rod nail (233) is inserted into the center of one end of the tube body (231) provided with the access hole (2311), the head part of the polish rod nail (233) and the end face of the tube body (231) are directly provided with the spring (234), the gland (232) is in threaded connection with one end of the tube body (231) and provided with the sealing gasket (235) in an axial gap, the inner surface of the gland (232) presses the head part of the polish rod nail (233), the sealing ring (236) is arranged between the inner surface of the gland (232) and the head part of the polish rod nail (233), the center of the end face of the;

the joint (25) comprises a pipe joint (251) and a rubber sleeve (252), the pipe joint (251) comprises a bottom section (2511) and a column head section (2512) arranged on the end face of the bottom section (2511), the diameter of the column head section (2512) is smaller than that of a through hole in the end face of a gland (232), an overflowing hole (2513) is arranged in the bottom section (2511) and connected with the lower end of the bottom section (2511) and the root of the column head section (2512), the lower end of the bottom section (2511) is connected with a sampling pipe (6), the rubber sleeve (252) is placed on the upper surface of the bottom section (2511) and is concentrically arranged with the column head section (2512), and the rubber sleeve (252) is provided with a cylindrical side face with wave-shaped folds.

4. An amphibious sample detection drone according to claim 1, characterised in that: the lower end of the bracket leg (3) is provided with a buoy (5).

5. An amphibious sample detection drone according to claim 3, characterised in that: sampling pipe (6) lower extreme still is equipped with sampling head (7), sampling head (7) density is greater than water, and when unmanned aerial vehicle fell on the surface of water, sampling head (7) sink in the water.

6. An amphibious sample detection drone according to claim 5, characterised in that: the sampling head (7) is provided with a filter screen, and the sampling head (7) filters the water body entering the sampling pipe (6).

7. An amphibious sample detection drone according to claim 1, characterised in that: unmanned aerial vehicle still includes position mark (9), wireless connection is carried out with well accuse case (1) in position mark (9), and during the use, position mark (9) are placed around the waters, and position mark (9) quantity more than or equal to three.

8. An amphibious sample detection drone according to claim 7, characterised in that: the number of the position markers (9) is four.

9. An amphibious sample detection drone according to claim 3, characterised in that: a spring rib (2521) is arranged in the rubber sleeve (252).

10. An amphibious sample detection drone according to claim 5, characterised in that: and the inner surface and the outer surface of the sampling pipe (6), the sampling head (7) and the joint (25) are coated with hydrophobic layers.