CN112278284B - Liquid level monitoring device and plant protection unmanned aerial vehicle comprising same - Google Patents
Liquid level monitoring device and plant protection unmanned aerial vehicle comprising same Download PDFInfo
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- CN112278284B CN112278284B CN202011194585.7A CN202011194585A CN112278284B CN 112278284 B CN112278284 B CN 112278284B CN 202011194585 A CN202011194585 A CN 202011194585A CN 112278284 B CN112278284 B CN 112278284B
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- magnet
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- hall sensor
- sensor switch
- monitoring device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D1/00—Dropping, ejecting, releasing, or receiving articles, liquids, or the like, in flight
- B64D1/16—Dropping or releasing powdered, liquid, or gaseous matter, e.g. for fire-fighting
- B64D1/18—Dropping or releasing powdered, liquid, or gaseous matter, e.g. for fire-fighting by spraying, e.g. insecticides
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
- A01M7/0025—Mechanical sprayers
- A01M7/0032—Pressure sprayers
- A01M7/0042—Field sprayers, e.g. self-propelled, drawn or tractor-mounted
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
- A01M7/0082—Undercarriages, frames, mountings, couplings, tanks
- A01M7/0085—Tanks
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
- A01M7/0089—Regulating or controlling systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C39/00—Aircraft not otherwise provided for
- B64C39/02—Aircraft not otherwise provided for characterised by special use
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D47/00—Equipment not otherwise provided for
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
- G01F23/40—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using bands or wires as transmission elements
- G01F23/42—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using bands or wires as transmission elements using mechanically actuated indicating means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U2101/00—UAVs specially adapted for particular uses or applications
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Environmental Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Insects & Arthropods (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention discloses a liquid level monitoring device and a plant protection unmanned aerial vehicle comprising the same, and relates to the technical field of unmanned aerial vehicles. The problem of liquid level monitoring device adopt the mode of bonding to fix more, be unsuitable for long-term use is solved. The liquid level monitoring device disclosed by the invention comprises: the action wheel, the connecting wire, first magnet, from the driving wheel, the floater, second magnet, third magnet and hall angle sensor, the floater floats on the liquid level in the medical kit, second magnet in the floater drives first magnet on the connecting wire and reciprocates to it rotates to drive the action wheel, and then drives the epaxial third magnet rotation of commentaries on classics, can record third magnet pivoted angle through hall angle sensor, obtain the change of connecting wire length through the pivoted angle conversion, and then obtain the change of liquid level in the medical kit. The liquid levels corresponding to the positions of the connecting line and the medicine boxes with different heights can be calibrated in advance, so that the corresponding liquid levels in the medicine boxes can be visually obtained. This application easy dismounting can detect the liquid level in succession, is difficult for droing.
Description
Technical Field
The invention relates to the technical field of unmanned aerial vehicles, in particular to a liquid level monitoring device and a plant protection unmanned aerial vehicle comprising the same.
Background
Plant protection unmanned aerial vehicle flies the accuse through ground remote control or navigation and realizes spraying the operation, need adopt the level gauge to monitor the interior liquid medicine volume of medical kit at the in-process of spraying insecticide, avoids causing unmanned aerial vehicle to make a round trip repeatedly because of observing the water tank liquid medicine, reduces unmanned aerial vehicle flying distance, practices thrift the unmanned aerial vehicle electric quantity, improves and sprays efficiency. The float-ball type liquid level meter consists of float ball, inserted rod, etc. and when the liquid level in the container changes, the float ball moves up and down. But the suitability of traditional floater level gauge is lower, in addition, also is inconvenient for monitoring remaining dose in the medical kit as required. Therefore, in the unmanned aerial vehicle field, certain modification has been carried out to the floater level gauge to adapt to actual need.
Among the prior art, plant protection unmanned aerial vehicle includes the water tank, and the winding of water tank surface is connected with the lamp strip, and inlays at the water tank top and be equipped with the filler, and the welding of filler bottom has the baffle, and both sides all have the connecting rod in the front and back of baffle to inlay in the both sides, and the filler top is inlayed and is equipped with the funnel, and both sides all are through bolt fixedly connected with electro-magnet around the funnel, and water tank one side is seted up flutedly, and the inboard of recess is provided with contact and shell fragment, the inside floater that is provided with of water tank, and the floater is inside to be inlayed and is equipped with the second magnetic path. The water level change is sensed through the sliding rod and the floating ball in the water tank, and the magnetic block in the floating ball attracts the contact plate to be communicated with the contact plate, so that the lamp strip outside the water tank emits light, and the amount of liquid medicine in the water tank is accurately prompted to an operator according to the light.
However, the prior art has the following problems: the lamp strip outside the water tank is fixed on the outer wall of the medicine box in a bonding mode, is exposed outside for a long time, is easy to fall off and damage, and is low in reliability and service life.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a liquid level monitoring device and a plant protection unmanned aerial vehicle comprising the same, and solves the problems that the liquid level monitoring device is mostly fixed in a bonding mode and is not suitable for long-term use.
The first aspect of the present invention discloses a liquid level monitoring device, comprising: a first fixing plate, a detection box, a driving wheel, a connecting wire, a first magnet, a driven wheel, a floating ball, a second fixing plate, a connecting strip, a third magnet, a third fixing plate, a first sensor plate and a Hall angle sensor,
the first fixing plate is provided with a detection box;
the inner side wall of the detection box is provided with a driving wheel and a driven wheel, the driving wheel and the driven wheel are rotatably connected with the detection box, the driving wheel and the driven wheel are connected through a connecting wire, and a first magnet is arranged on the connecting wire;
a connecting strip is arranged on the second fixing plate, a floating ball is arranged on the connecting strip, and a second magnet is arranged on the floating ball;
the third magnet is arranged on the end surface of the rotating shaft of the driving wheel;
the third fixed plate sets up the one side of keeping away from the detection box at the action wheel, and the one side of keeping away from the action wheel at the third fixed plate is set up to first sensor board, is provided with hall angle sensor on the first sensor board.
Further, still include: a quick-release device, which is arranged on the frame,
the quick detaching device is arranged on the first fixing plate and comprises a quick detaching button, a spring, a first clamping ring and a second clamping ring, the spring is arranged between the first clamping ring and the second clamping ring, and the spring, the first clamping ring and the second clamping ring are sleeved on the quick detaching button.
Further, still include: an upper limit clamp and a lower limit clamp,
the upper limit card is arranged on the inner wall of the detection box at one side close to the driving wheel, the connecting wire passes through the upper limit card,
the lower limit card is arranged on the inner wall of the detection box close to one side of the driven wheel, the connecting wire passes through the lower limit card,
the first magnet is arranged between the upper limit card and the lower limit card.
Further, still include: a second sensor plate, a first Hall sensor switch and a second Hall sensor switch,
the second sensor plate is arranged on the inner side wall of the detection box, the length of the second sensor plate is greater than the center distance between the driving wheel and the driven wheel, the second sensor plate is provided with a Hall sensor switch, the first Hall sensor switch is arranged at a position close to the upper limit card, so that the first magnet moved to the position of the upper limit card can be induced with the first Hall sensor switch,
the second Hall sensor switch is arranged at a position close to the lower limit card, so that the first magnet which moves to the position of the lower limit card can sense the second Hall sensor switch,
further, a mounting bracket, a first mounting plate, a second mounting plate, a threaded rod, a first motor, a fourth fixing plate, a second motor and a rubber ring,
the mounting bracket is arranged at the upper end of the inner side wall of the detection box and at one side of the second sensor plate far away from the connecting line,
the upper end of the mounting bracket is provided with a first mounting plate, the lower end is provided with a second mounting plate, the second mounting plate is provided with a first motor,
the threaded rod is rotationally connected with the first mounting plate and the second mounting plate and is connected with the first motor,
a second motor is arranged on the fourth fixing plate, a rubber ring is arranged on the second motor, the rubber ring is arranged under the driving wheel,
one end of the fourth fixing plate far away from the second motor is provided with a first mounting lug and a bolt, the bolt is matched with a thread groove of the threaded rod,
the threaded rod and the fourth fixing plate are connected through the first mounting lug, and the bolt is arranged in a thread groove of the threaded rod.
Further, still include: a fourth magnet, a third Hall sensor switch and a fourth Hall sensor switch,
the fourth magnet is arranged on the fourth fixing plate and between the bolt and the second motor,
the third Hall sensor switch and the fourth Hall sensor switch are arranged on the second sensor plate, the third Hall sensor switch is arranged on one side close to the first mounting plate, and the fourth Hall sensor switch is arranged on one side close to the second mounting plate.
Further, still include: the positioning shaft and the second mounting lug are arranged on the positioning shaft,
one end of the positioning shaft is connected with the first mounting plate, the other end is connected with the second mounting plate,
the second installation ear sets up on the fourth fixed plate, and the location axle cooperates with second installation ear hole axle.
Furthermore, the Hall angle sensor, the first Hall sensor switch, the second Hall sensor switch, the third Hall sensor switch, the fourth Hall sensor switch, the first motor and the second motor are electrically connected with the unmanned aerial vehicle flight controller.
Furthermore, a first boss and a second boss are arranged on the inner side wall of the detection box, the first boss is arranged at the upper end of the detection box, the second boss is arranged at the lower end of the detection box, the driving wheel is matched with the first boss hole shaft, and the driven wheel is matched with the second boss hole shaft;
a shaft sleeve and a first rotating shaft are arranged on one side of the driving wheel, which is far away from the first boss, the shaft sleeve is arranged between the driving wheel and the first rotating shaft, and the driving wheel, the shaft sleeve and the first rotating shaft are coaxially arranged;
a second rotating shaft is arranged on one side of the driven wheel, which is far away from the second boss, and the driven wheel and the second rotating shaft are coaxially arranged;
a first fixing column and a second fixing column are arranged on the inner side wall of the detection box.
The second aspect of the invention discloses a plant protection unmanned aerial vehicle, comprising: unmanned aerial vehicle fuselage and medical kit, the medical kit is pegged graft in the fuselage, and liquid level monitoring device's first fixed plate is installed on the unmanned aerial vehicle fuselage, and the medical kit inner wall is located to liquid level monitoring device's second fixed plate, detects the box and is located the medical kit outside and close in the medical kit inner wall of fixed second fixed plate.
The liquid level monitoring device disclosed by the invention comprises: first fixed plate, detect the box, the action wheel, the connecting wire, first magnet, from the driving wheel, the second fixed plate, the floater, second magnet, the connecting strip, third magnet, the third fixed plate, first sensor board and hall angle sensor, the floater floats on the liquid level in the medical kit, second magnet in the floater drives first magnet on the connecting wire and reciprocates, thereby drive the action wheel and rotate, and then drive the epaxial third magnet rotation of commentaries on classics, can record third magnet pivoted angle through hall angle sensor, obtain the change of connecting wire length through the pivoted angle conversion, and then obtain the change of liquid level in the medical kit. The liquid levels corresponding to the positions of the connecting line length and the positions of the medicine boxes with different heights can be calibrated in advance, and the corresponding liquid levels in the medicine boxes are obtained through the change of the connecting line length. For the plug-in medicine chest, in some embodiments, the magnet on the fixing piece in the detection box can return to the lower limiting card, so that the next measurement is facilitated. The liquid level detection device is suitable for different medicine boxes, and the structure of the medicine boxes does not need to be changed; easy dismounting detects the box and can follow unmanned aerial vehicle and dismantle fast, can detect the liquid level of multiple height in the medical kit, and safe and reliable is difficult for droing.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a liquid level monitoring device according to the present application;
fig. 2 is a schematic structural view of a liquid level monitoring device and a plant protection unmanned aerial vehicle comprising the same according to the present application;
FIG. 3 is a schematic structural view of a quick release button at the bottom of a fluid level monitoring device according to the present application;
FIG. 4 is a first schematic structural diagram of the interior of a detection box of a liquid level monitoring device according to the present application;
FIG. 5 is a second schematic structural view of the interior of the detection box of the liquid level monitoring device of the present application;
FIG. 6 is a schematic view of an internal structure of a medicine tank of a liquid level monitoring device according to the present application;
FIG. 7 is a sectional view of the structure of a drug container of a device for monitoring fluid level according to the present application;
FIG. 8 is a schematic structural diagram of a reset device of a first magnet in a fluid level monitoring device according to the present application;
FIG. 9 is an exploded view of the inner components of the detecting box of the liquid level monitor of the present application;
FIG. 10 is a cross-sectional view of an upper driving wheel of a fluid level monitoring apparatus according to the present application;
fig. 11 is a third schematic structural diagram of the interior of the detection box in the liquid level monitoring device according to the present application.
1-a first fixing plate; 2-detection box, 201-first boss, 202-second boss, 203-first fixing column, 204-second fixing column; 3-driving wheel, 301-shaft sleeve, 302-first rotating shaft; 4-connecting wires; 5-a first magnet; 6-driven wheel, 601-second rotating shaft; 7-floating ball; 8-a second fixing plate; 9-connecting bar, 901-second magnet; 10-a third magnet; 11-a third fixing plate; 12-a first sensor board; 13-a hall angle sensor; 14-quick release device, 141-quick release button, 142-spring, 143-first snap ring, 144-second snap ring; 15-upper limit card; 16-lower limit card; 17-a second sensor board; 18-a first hall sensor switch, 19-a second hall sensor switch; 20-mounting a bracket; 21-a first mounting plate, 22-a second mounting plate; 23-a threaded rod; 24-a first motor; 25-fourth fixing plate, 251-first mounting lug, 252-bolt; 26-a second motor; 27-rubber ring; 28-a fourth magnet; 29-a third hall sensor switch, 30-a fourth hall sensor switch; 31-positioning the shaft; 32-a second mounting ear; 33-a drone fuselage; 34-medicine chest.
Detailed Description
In order to make the technical solutions in the embodiments of the present invention better understood and make the above objects, features and advantages of the embodiments of the present invention more comprehensible, the technical solutions in the embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
Example 1:
the invention provides a liquid level detection device and a plant protection unmanned aerial vehicle comprising the same, and referring to fig. 1, 2 and 3, the liquid level detection device comprises two parts, wherein one part is arranged on the unmanned aerial vehicle and comprises a first fixing plate 1 and a detection box 2, the first fixing plate 1 is fixed on a body of the unmanned aerial vehicle, the detection box 2 is arranged on the first fixing plate 1 in a quick-release manner, a quick-release groove is formed in the first fixing plate 1, the detection box 2 is connected in the quick-release groove in a sliding manner, a quick-release button 141 is arranged at the bottom of the detection box, a spring 142 is sleeved on the quick-release button 141, the spring 142 is positioned between a first snap ring 143 and a second snap ring 144, and the quick-release button 141 prevents the detection box 2 from falling out of the quick-release groove downwards.
Referring to fig. 4 and 5, a driving wheel 3 and a driven wheel 6 are fixed in the detection box, the driving wheel 3 and the driven wheel 6 are driven through a connecting wire 4, a first magnet 5 is fixed on the connecting wire 4, the first magnet 5 can be fixed on the connecting wire 4 through a fixing piece, and the first magnet 5 can be embedded on the fixing piece.
Referring to fig. 6, a second fixing plate 8 is fixed on the inner wall of the medicine box 34, a connecting strip 9 is arranged on the second fixing plate 8, referring to fig. 7, a floating ball 7 is fixed on the connecting strip 9, a second magnet 901 is arranged in the floating ball 7, the floating ball 7 is driven by the liquid level in the medicine box 34 to move, and the second magnet 901 is arranged in the floating ball 7 to move along with the floating ball 7.
According to the structure of the liquid level detection device, the moving second magnet 901 can drive the first magnet 5 in the detection box to move, and the first magnet 5 is fixed on the connecting line 4, so that the connecting line 4 can move along with the first magnet, the driving wheel 3 is driven to rotate, and the driving wheel 3 drives the driven wheel 6 to rotate. The last pivot terminal surface of action wheel 3 is fixed with third magnet 10, still include third fixed plate 11 and first sensor board 12, third fixed plate 11 supports fixedly through three fixed column 203 of fixing at the detection box inner wall, first sensor board 12 stacks and has certain clearance between third fixed plate 11 top and two boards, there is hall angle sensor 13 on the first sensor board 12, can record action wheel 3 pivoted angle through hall angle sensor 13, obtain the displacement distance of first magnet 5 through the pivoted angle, and then obtain the change of liquid level.
The manner of converting the rotation angle into the movement distance is as follows: in the angular system, since the arc length subtended by the central angle θ of 360 ° is equal to the circumference (the radius of the circle is r), the arc length L subtended by the central angle is equal to
Under the radian system, if the central angle subtended by the arc is θ, then there is the formula:
the liquid levels corresponding to the positions of the connecting line 4 and the medicine boxes 34 at different heights can be calibrated in advance, and the corresponding liquid levels in the medicine boxes 34 can be obtained through the change of the length of the connecting line 4. The advance calibration means that, before the medicine box 34 is used, the first magnet 5 is positioned at the lower limit card 16, the medicine boxes 34 are filled with the liquid medicines of different volumes, the volume of the liquid medicine filled each time and the angle obtained by the hall angle sensor 13 are recorded, the moving distance of the first magnet 5 can be known according to the angle, and the length of the connecting line corresponds to the volume of the liquid medicine. In normal use, each time the length of the connecting line is obtained, the volume of the liquid medicine corresponding to the length of the connecting line, that is, the liquid level in the medicine box 34, which is actually the volume of the liquid medicine remaining in the medicine box 34, can be obtained.
Example 2:
referring to fig. 4 and 5, the driving wheel 3 and the driven wheel 6 are respectively provided with an upper limit card 15 and a lower limit card 16 to limit the upper and lower positions of the first magnet 5, in addition, the inner wall of the detection box 2 is provided with a second sensor plate 17, the upper and lower ends of the second sensor plate 17 are provided with a first hall sensor switch 18 and a second hall sensor switch 19, and the first hall sensor switch 18 and the second hall sensor switch 19 of the hall sensor switches correspond to the positions of the upper limit card 15 and the lower limit card 16 and are used for sensing the position of the first magnet 5 reaching the upper and lower positions.
The first hall sensor switch 18 and the second hall sensor switch 19 correspond to the positions of the upper limit card 15 and the lower limit card 16, and are used for sensing that the first magnet 5 reaches the upper and lower positions. If the medicine box 34 is installed on the unmanned aerial vehicle body 33 in a plug-in manner, in the process of pulling the medicine box 34 upwards from the unmanned aerial vehicle body, the first magnet 5 in the detection box 2 moves upwards to the upper limit card 15 along with the floating ball 7 in the medicine box 34, and meanwhile, the hall sensor switch 19 at the upper limit card 15 can sense the position information and send the position information to the flight controller. Before the next installation, the magnet located at the upper limit card 15 needs to be reset to the lower limit card 16, the first hall sensor switch 18 and the second hall sensor switch 19 are used for sensing the position, and the flight controller cannot know whether the upper limit card and the lower limit card have been reached without the first hall sensor switch 18 and the second hall sensor switch 19.
Example 3:
some medical kits 34 adopt plug-in mode to install on unmanned aerial vehicle's fuselage, and after pulling out medical kit 34, the first magnet 5 in detecting box 2 can be along with the floater 7 upward movement in medical kit 34 to upper limit card 15 department, for next liquid level measurement, need let the magnet return to lower limit card 16 department.
A magnet may be further disposed on the detecting box 2, and when the above adjustment is needed, the operator holds the magnet to attract the first magnet 5 to the lower limit card 16.
Example 4:
to the above embodiment 3, the present invention provides a liquid level detection device, which uses a mechanized structure to replace manual operation, thereby realizing automation.
Referring to fig. 5, 8 and 9, the scheme adopted is: second sensor board 17 one side is equipped with installing support 20, installing support 20 both ends include first mounting panel 21 and second mounting panel 22, it is connected with threaded rod 23 to rotate between first mounting panel 21 and the second mounting panel 22, threaded rod 23 is connected with first motor 24, first motor 24 is fixed on one of them mounting panel, still include fourth fixed plate 25, refer to fig. 6, be fixed with second motor 26 on the fourth fixed plate 25, the cover is equipped with rubber circle 27 on the output shaft of second motor 26, second motor 26 rotates, drive action wheel 3 through the frictional force between rubber circle 27 and the action wheel 3 and move, thereby send magnet to lower upper limit card 15 and lower limit card 16 department.
In order to adjust the distance between the rubber ring 27 on the output shaft of the second motor 26 and the driving wheel 3 to ensure that the rubber ring 27 can drive the driving wheel 3 to move, the threaded rod 23 is driven to move by the first motor 24, the fourth fixing plate 25 is clamped into the gap on the threaded rod 23 by the bolt 252 on the fourth fixing plate 25 and is fixed on the threaded rod 23, the threaded rod 23 moves to drive the fourth fixing plate 25 to move linearly on the threaded rod 23, in order to position accurately, a magnet is arranged on the fourth fixing plate 25, a third hall sensor switch 29 and a fourth hall sensor switch 30 are arranged at the corresponding positions of the sensor plates, and the fourth fixing plate 25 can be sensed to reach an accurate position. One end of the threaded rod 23 is connected with the first motor 24, and the other end is rotatably connected in a shaft sleeve on the mounting plate. One side of the threaded rod 23 is provided with a positioning shaft 31, and the fourth fixing plate 25 is sleeved on the positioning shaft 31. Each sensor and motor are connected with unmanned aerial vehicle flight controller, control through flight controller.
Example 5:
fig. 8 is a schematic structural diagram of a resetting device for a first magnet in a liquid level monitoring device according to the present application. As shown in fig. 8, the present invention provides a specific structure of a resetting device for a first magnet in a liquid level detecting device, including: the mounting bracket 20, the first mounting plate 21, the second mounting plate 22, the threaded rod 23, the first motor 24, the fourth fixing plate 25, the second motor 26 and the rubber ring 27, the mounting bracket 20 is arranged at the upper end of the inner side wall of the detection box 2 and is arranged at one side of the second sensor plate 17 away from the connecting line 4, the first mounting plate 21 is arranged at the upper end of the mounting bracket 20, the second mounting plate 22 is arranged at the lower end of the mounting bracket, the first motor 24 is arranged on the second mounting plate 22, the threaded rod 23 is rotatably connected with the first mounting plate 21 and the second mounting plate 22 and is connected with the first motor 24, the second motor 26 is arranged on the fourth fixing plate 25, the rubber ring 27 is arranged on the second motor 26, the rubber ring 27 is arranged under the driving wheel 3, a first mounting lug 251 and a bolt 252 are arranged at one end of the fourth fixing plate 25 away from the second motor 26, the bolt 252 is matched with a threaded groove of the threaded rod 23, the threaded rod 23 and the fourth fixing plate 25 are connected by the first mounting lug 251, and the bolt 252 is in the threaded groove of the threaded rod 23.
Further, still include: fourth magnet 28 and third hall sensor switch 29 and fourth hall sensor switch 30, fourth magnet 28 set up on fourth fixed plate 25, set up between bolt 252 and second motor 26, third hall sensor switch 29 and fourth hall sensor switch 30 set up on second sensor board 17, third hall sensor switch 29 sets up in the one side that is close to first mounting panel 21, fourth hall sensor switch 30 sets up in the one side that is close to second mounting panel 22.
Further, still include: the positioning shaft 31 and the second mounting lug 32, positioning shaft 31 one end is connected with first mounting panel 21, and the other end is connected with second mounting panel 22, and second mounting lug 32 sets up on fourth fixed plate 25, and positioning shaft 31 and the axle cooperation of second mounting lug 32 hole.
Example 6:
referring to fig. 10 and 11, the present invention discloses a structure of a driving wheel on the inside of a cartridge, including: the detection device comprises a first fixing plate 1, a detection box 2, a driving wheel 3, a connecting wire 4, a first magnet 5, a driven wheel 6, a medicine box 34, a second fixing plate 88, a connecting strip 9, a third magnet 10, a third fixing plate 11, a first sensor plate 12 and a Hall angle sensor 13, wherein the first fixing plate 1 is connected with the detection box 2 in a sliding manner, a first boss 201 and a second boss 202 are arranged on the inner side wall of the detection box 2, the first boss 201 is arranged at the upper end of the detection box 2, the second boss 202 is arranged at the lower end of the detection box 2, the driving wheel 3 is matched with a hole shaft of the first boss 201, the driven wheel 6 is matched with a hole shaft of the second boss 202, a shaft sleeve 301 and a first rotating shaft 302 are arranged on one side of the driving wheel 3 far away from the first boss 201, the shaft sleeve 301 is arranged between the driving wheel 3 and the first rotating shaft 302, the driving wheel 3, the shaft sleeve 301 and the first rotating shaft 302 are coaxially arranged, a second rotating shaft 601 is arranged on one side of the driven wheel 6 far away from the second boss 202, follow the coaxial setting of driving wheel 6 and second pivot 601, be provided with first fixed column 203 and second fixed column 204 on the detection box 2 inside wall, first pivot 302 is connected with first fixed column 203, second pivot 601 is connected with second fixed column 204, action wheel 3 passes through connecting wire 4 with driven wheel 6 and connects, be provided with first magnet 5 on the connecting wire 4, third magnet 10 sets up in the through-hole of action wheel 3, axle sleeve 301's one side is kept away from at first pivot 302 in third fixed plate 11 setting, with first pivot 302 spiro union, one side that third fixed plate 11 is close to first pivot 302 is provided with first sensor board 12, be provided with hall angle sensor 13 on first sensor board 12, hall angle sensor 13 and third magnet 10 are sensible.
Example 7:
further, the fourth fixing plate 25, the first mounting lug 251, the bolt 252 and the second mounting lug 32 are integrally formed.
This embodiment can be applied to all the embodiments described above.
While there has been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics 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.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
The embodiments of the present invention are described in detail, and the embodiments are only examples of the general inventive concept, and should not be construed as limiting the scope of the present invention. Any other embodiments extended by the solution according to the invention without inventive step will be within the scope of the present invention for a person skilled in the art.
Claims (8)
1. A liquid level monitoring device, comprising: a first fixing plate (1), a detection box (2), a driving wheel (3), a connecting line (4), a first magnet (5), a driven wheel (6), a floating ball (7), a second fixing plate (8), a connecting strip (9), a third magnet (10), a third fixing plate (11), a first sensor plate (12) and a Hall angle sensor (13),
the first fixing plate (1) is provided with the detection box (2);
the inner side wall of the detection box (2) is provided with the driving wheel (3) and the driven wheel (6), the driving wheel (3) and the driven wheel (6) are rotatably connected with the detection box (2), the driving wheel (3) and the driven wheel (6) are connected through the connecting line (4), and the connecting line (4) is provided with the first magnet (5);
the second fixing plate (8) is provided with the connecting strip (9), the connecting strip (9) is provided with the floating ball (7), and the floating ball (7) is provided with a second magnet (901);
the third magnet (10) is arranged on the end face of the rotating shaft of the driving wheel (3);
the third fixing plate (11) is arranged on one side, far away from the detection box (2), of the driving wheel (3), the first sensor plate (12) is arranged on one side, far away from the driving wheel (3), of the third fixing plate (11), and the Hall angle sensor (13) is arranged on the first sensor plate (12);
the liquid level monitoring device further comprises: the sensor comprises an upper limit card (15), a lower limit card (16), a second sensor plate (17), a first Hall sensor switch (18) and a second Hall sensor switch (19);
the upper limiting clamp (15) is arranged on the inner wall of the detection box (2) close to one side of the driving wheel (3), and the connecting wire (4) penetrates through the upper limiting clamp (15);
the lower limiting clamp (16) is arranged on the inner wall of the detection box (2) close to one side of the driven wheel (6), and the connecting wire (4) penetrates through the lower limiting clamp (16);
the first magnet (5) is arranged between the upper limit clamp (15) and the lower limit clamp (16);
the second sensor plate (17) is arranged on the inner side wall of the detection box (2), the length of the second sensor plate (17) is larger than the center distance between the driving wheel (3) and the driven wheel (6), a first Hall sensor switch (18) and a second Hall sensor switch (19) are arranged on the second sensor plate (17), the first Hall sensor switch (18) is arranged at a position close to the upper limit card (15), and therefore the first magnet (5) moving to the position of the upper limit card (15) can be induced by the first Hall sensor switch (18);
the second Hall sensor switch (19) is arranged at a position close to the lower limit card (16), so that the first magnet (5) moved to the position of the lower limit card (16) can be induced by the second Hall sensor switch (19).
2. A fluid level monitoring device as claimed in claim 1, further comprising: a quick release device (14),
the quick release device (14) is arranged on the first fixing plate (1), the quick release device (14) comprises a quick release button (141), a spring (142), a first clamping ring (143) and a second clamping ring (144), the spring (142) is arranged between the first clamping ring (143) and the second clamping ring (144), and the spring (142), the first clamping ring (143) and the second clamping ring (144) are sleeved on the quick release button (141).
3. The fluid level monitoring device of claim 1, further comprising: a mounting bracket (20), a first mounting plate (21), a second mounting plate (22), a threaded rod (23), a first motor (24), a fourth fixing plate (25), a second motor (26) and a rubber ring (27),
the mounting bracket (20) is arranged at the upper end of the inner side wall of the detection box (2) and is arranged on one side, away from the connecting line (4), of the second sensor plate (17);
the first mounting plate (21) is arranged at the upper end of the mounting bracket (20), the second mounting plate (22) is arranged at the lower end of the mounting bracket, and the first motor (24) is arranged on the second mounting plate (22);
the threaded rod (23) is rotatably connected to the first mounting plate (21) and the second mounting plate (22) and is connected with the first motor (24);
the second motor (26) is arranged on the fourth fixing plate (25), the rubber ring (27) is arranged on the second motor (26), the rubber ring (27) is arranged right below the driving wheel (3), a first mounting lug (251) and a bolt (252) are arranged at one end, far away from the second motor (26), of the fourth fixing plate (25), and the bolt (252) is matched with a thread groove of the threaded rod (23);
the threaded rod (23) and the fourth fixing plate (25) are connected through the first mounting lug (251), and the bolt (252) is arranged in a threaded groove of the threaded rod (23).
4. The fluid level monitoring device of claim 3, further comprising: a fourth magnet (28), a third Hall sensor switch (29) and a fourth Hall sensor switch (30),
the fourth magnet (28) is arranged on the fourth fixing plate (25) and between the bolt (252) and the second motor (26);
the third Hall sensor switch (29) and the fourth Hall sensor switch (30) are arranged on the second sensor plate (17), the third Hall sensor switch (29) is arranged on one side close to the first mounting plate (21), and the fourth Hall sensor switch (30) is arranged on one side close to the second mounting plate (22).
5. The fluid level monitoring device of claim 3, further comprising: a positioning shaft (31) and a second mounting lug (32),
one end of the positioning shaft (31) is connected with the first mounting plate (21), and the other end of the positioning shaft is connected with the second mounting plate (22);
the second mounting lug (32) is arranged on the fourth fixing plate (25), and the positioning shaft (31) is in shaft fit with the hole of the second mounting lug (32).
6. The liquid level monitoring device according to claim 4, wherein the Hall angle sensor (13), the first Hall sensor switch (18), the second Hall sensor switch (19), the third Hall sensor switch (29) and the fourth Hall sensor switch (30), the first motor (24) and the second motor (26) are electrically connected with an unmanned aerial vehicle flight controller.
7. The fluid level monitoring device of claim 1,
a first boss (201) and a second boss (202) are arranged on the inner side wall of the detection box (2), the first boss (201) is arranged at the upper end of the detection box (2), the second boss (202) is arranged at the lower end of the detection box (2), the driving wheel (3) is matched with a hole shaft of the first boss (201), and the driven wheel (6) is matched with a hole shaft of the second boss (202);
a shaft sleeve (301) and a first rotating shaft (302) are arranged on one side, away from the first boss (201), of the driving wheel (3), the shaft sleeve (301) is arranged between the driving wheel (3) and the first rotating shaft (302), and the driving wheel (3), the shaft sleeve (301) and the first rotating shaft (302) are coaxially arranged;
a second rotating shaft (601) is arranged on one side, away from the second boss (202), of the driven wheel (6), and the driven wheel (6) and the second rotating shaft (601) are coaxially arranged;
a first fixing column (203) and a second fixing column (204) are arranged on the inner side wall of the detection box (2).
8. The utility model provides a plant protection unmanned aerial vehicle, its characterized in that includes: unmanned aerial vehicle fuselage (33) and medical kit (34), medical kit (34) are pegged graft in fuselage (33), still include the liquid level monitoring device in any one of claims 1-7, liquid level monitoring device's first fixed plate (1) sets up on unmanned aerial vehicle fuselage (33), liquid level monitoring device's second fixed plate (8) set up on medical kit (34) inner wall, detect box (2) and set up in medical kit (34) the outside and be close to medical kit (34) inner wall in fixed second fixed plate (8).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011194585.7A CN112278284B (en) | 2020-10-30 | 2020-10-30 | Liquid level monitoring device and plant protection unmanned aerial vehicle comprising same |
| PCT/CN2020/126244 WO2022088207A1 (en) | 2020-10-30 | 2020-11-03 | Liquid level monitoring device and plant protection unmanned aerial vehicle comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011194585.7A CN112278284B (en) | 2020-10-30 | 2020-10-30 | Liquid level monitoring device and plant protection unmanned aerial vehicle comprising same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112278284A CN112278284A (en) | 2021-01-29 |
| CN112278284B true CN112278284B (en) | 2021-12-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011194585.7A Active CN112278284B (en) | 2020-10-30 | 2020-10-30 | Liquid level monitoring device and plant protection unmanned aerial vehicle comprising same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112278284B (en) |
| WO (1) | WO2022088207A1 (en) |
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|---|---|---|---|---|
| GB798790A (en) * | 1955-09-24 | 1958-07-30 | Nils Peter Hoyer | Improvements in or relating to apparatus for translating vertical float movements instorage tanks into rotary movements of a level indicating instrument |
| JPS5748614A (en) * | 1980-02-14 | 1982-03-20 | Aoi Eng Kk | Direct viewing type magnet liquid level gage |
| CN2290842Y (en) * | 1997-04-28 | 1998-09-09 | 王福双 | Code disk type magnetic float tank gage |
| CN2515662Y (en) * | 2001-09-07 | 2002-10-09 | 铁岭市兴科精密仪器有限责任公司 | Magnetic suspension type liquid level sensor |
| CN202048961U (en) * | 2011-04-14 | 2011-11-23 | 宝山钢铁股份有限公司 | Liquid level detecting device for laser source cooling water tank of welding machine |
| CN207585725U (en) * | 2017-12-01 | 2018-07-06 | 四川雷神空天科技有限公司 | A kind of liquid-level detection device for water tanks based on agricultural plant protection unmanned plane |
| CN110785639A (en) * | 2018-09-14 | 2020-02-11 | 深圳市大疆创新科技有限公司 | Unmanned aerial vehicle's liquid level measurement device, medical kit device, liquid feeding device and unmanned vehicles |
| CN210119268U (en) * | 2019-07-12 | 2020-02-28 | 佳木斯大学 | Liquid level sensor with high stability |
-
2020
- 2020-10-30 CN CN202011194585.7A patent/CN112278284B/en active Active
- 2020-11-03 WO PCT/CN2020/126244 patent/WO2022088207A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB798790A (en) * | 1955-09-24 | 1958-07-30 | Nils Peter Hoyer | Improvements in or relating to apparatus for translating vertical float movements instorage tanks into rotary movements of a level indicating instrument |
| JPS5748614A (en) * | 1980-02-14 | 1982-03-20 | Aoi Eng Kk | Direct viewing type magnet liquid level gage |
| CN2290842Y (en) * | 1997-04-28 | 1998-09-09 | 王福双 | Code disk type magnetic float tank gage |
| CN2515662Y (en) * | 2001-09-07 | 2002-10-09 | 铁岭市兴科精密仪器有限责任公司 | Magnetic suspension type liquid level sensor |
| CN202048961U (en) * | 2011-04-14 | 2011-11-23 | 宝山钢铁股份有限公司 | Liquid level detecting device for laser source cooling water tank of welding machine |
| CN207585725U (en) * | 2017-12-01 | 2018-07-06 | 四川雷神空天科技有限公司 | A kind of liquid-level detection device for water tanks based on agricultural plant protection unmanned plane |
| CN110785639A (en) * | 2018-09-14 | 2020-02-11 | 深圳市大疆创新科技有限公司 | Unmanned aerial vehicle's liquid level measurement device, medical kit device, liquid feeding device and unmanned vehicles |
| CN210119268U (en) * | 2019-07-12 | 2020-02-28 | 佳木斯大学 | Liquid level sensor with high stability |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112278284A (en) | 2021-01-29 |
| WO2022088207A1 (en) | 2022-05-05 |
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