CN215270205U - Plant protection machine and liquid level detection device thereof - Google Patents
Plant protection machine and liquid level detection device thereof Download PDFInfo
- Publication number
- CN215270205U CN215270205U CN202120452328.2U CN202120452328U CN215270205U CN 215270205 U CN215270205 U CN 215270205U CN 202120452328 U CN202120452328 U CN 202120452328U CN 215270205 U CN215270205 U CN 215270205U
- Authority
- CN
- China
- Prior art keywords
- liquid level
- sleeve
- water tank
- plant protection
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 174
- 238000001514 detection method Methods 0.000 title claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 75
- 238000005259 measurement Methods 0.000 claims description 17
- 239000012530 fluid Substances 0.000 claims 1
- 230000008859 change Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000575 pesticide Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Abstract
The utility model provides a plant protection machine and a liquid level detection device thereof, wherein the liquid level detection device comprises a liquid level meter (1) and a sleeve (2), the sleeve comprises an accommodating cavity (21), one end of the sleeve, which is close to the bottom, is provided with a circulation hole (22), and the accommodating cavity is communicated with the liquid in a water tank through the circulation hole; the liquid level meter is at least partially accommodated in the accommodating cavity and is used for detecting the liquid level of liquid in the water tank. The utility model discloses an increase a sleeve pipe, place the level gauge and detect in the sleeve pipe, just can effectively block the influence of the liquid level wave in the plant protection machine water tank, improve the interior liquid level measuring accuracy of water tank to can correctly calculate the surplus dose of water tank, and can ensure liquid level detection's real-time, liquid level detection device's simple structure, with low costs, measuring accuracy, stability and real-time nature are strong, user experience is good.
Description
Technical Field
The utility model relates to a plant protection machine field especially relates to a plant protection machine and liquid level detection device thereof.
Background
With the rapid development of digital agriculture, agriculture enters a new stage of high-quality development, and the mode of spraying pesticide by plant protection machines such as unmanned aerial vehicles and the like is a bright spot in the new agricultural era rapidly due to the characteristics of flexibility, low cost and high efficiency. Some existing liquid level meters have inaccurate measuring results due to the fact that when a water tank of the plant protection machine moves or is in an unstable environment, and in order to reduce the influence, a large amount of effort is required to design a software filter. However, due to the complexity of the posture of the plant protection machine, the structural change of the water tank, the difference of the actual liquid loading amount and the difference of the liquid viscosity, the change condition of the waves is variable and complex, and the measurement result still has the problems of poor effect, poor universality, low reliability and the like; moreover, a software filter used for eliminating the influence of water waves has larger delay, and more real-time performance is sacrificed while accuracy is pursued.
SUMMERY OF THE UTILITY MODEL
The utility model provides a plant protection machine and liquid level detection device thereof.
Specifically, the utility model discloses a realize through following technical scheme:
an embodiment of the utility model provides a liquid level detection device of plant protection machine for measure the liquid level of the liquid in plant protection machine's the water tank, liquid level detection device includes:
a liquid level meter; and
the sleeve comprises an accommodating cavity, a circulation hole is formed in one end, close to the bottom, of the sleeve, and the accommodating cavity is communicated with liquid in the water tank through the circulation hole;
the liquid level meter is at least partially accommodated in the accommodating cavity and is used for detecting the liquid level of liquid in the water tank.
Optionally, the flow holes are provided in the bottom of the sleeve and/or in the side wall of the sleeve near one end of the bottom.
Optionally, the liquid level meter includes a rod body at least partially accommodated in the accommodating cavity, a magnetic float sleeved on the rod body, and a plurality of magnetic sensors arranged in the rod body, an extending direction of the rod body is consistent with an extending direction of the sleeve, and the plurality of magnetic sensors are arranged at intervals along the extending direction of the rod body;
the magnetic floater and the magnetic-sensing sensor are accommodated in the accommodating cavity, and the magnetic floater is matched with the magnetic-sensing sensor to detect the liquid level of the liquid in the water tank.
Optionally, the liquid level detection device further comprises a limiting part, and the limiting part is arranged at the through hole to prevent the magnetic floater from penetrating out of the through hole.
Optionally, the limiting part is fixed at the bottom of the rod body or at the bottom of the sleeve.
Optionally, the level gauge is a radar level gauge or an ultrasonic level gauge.
Optionally, an air pressure balancing hole is formed in one end, close to the top, of the sleeve, and the air pressure balancing hole is communicated with the accommodating cavity.
Optionally, the air pressure balancing hole is provided at the top of the sleeve and/or at the side wall of the sleeve near one end of the top.
Optionally, the liquid level meter is installed at the bottom of a water tank cover, and the sleeve is fixed to the top of the liquid level meter or the top of the sleeve covers the bottom of the water tank cover.
Optionally, the liquid level detection apparatus further comprises an inertial measurement unit IMU for detecting a posture of the water tank to determine an actual liquid level of the water tank based on the liquid level detected by the liquid level meter and the posture.
The embodiment of the utility model provides a still provide a plant protection machine, plant protection machine includes:
a body; and
the liquid level detection device according to any one of the above embodiments, wherein the liquid level detection device is mounted on the machine body.
According to the utility model provides a technical scheme, through increasing a sleeve pipe, place the level gauge and detect in the sleeve pipe, just can effectively block the influence of the liquid level wave in the plant protection machine water tank, improve the interior liquid level measurement's of water tank accuracy to can correctly calculate the remaining dose of water tank, and can ensure liquid level detection's real-time, liquid level detection device's simple structure, with low costs, measuring accuracy, stability and real-time nature are strong, user experience is good.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a plant protection machine according to an exemplary embodiment of the present invention;
fig. 2 is a schematic structural view of a water tank according to an exemplary embodiment of the present invention;
fig. 3 is a schematic structural diagram of a liquid level detecting device according to an exemplary embodiment of the present invention.
Reference numerals:
100. a body; 200. a water tank; 210. a box body; 220. a water tank cover; 1. a liquid level meter; 11. a rod body; 12. a magnetic float; 13. a magnetic induction sensor; 2. a sleeve; 21. an accommodating cavity; 22. a flow-through hole; 23. an air pressure balancing hole; 3. a limiting part.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
When a water tank of a plant protection machine moves or is in an unstable environment, a liquid level wave of the existing liquid level meter can lead to inaccurate measuring results, and the real-time performance of measurement is sacrificed by using a software filter. In addition, the plant protection machine is sprayed according to the automatic pesticide that accomplishes of preset airline, degree of automation is very high, use unmanned aerial vehicle as an example, however at the flight in-process, the vibrations of unmanned aerial vehicle motor, and advance, the turn, the violent change in gesture that action such as scram appears can cause liquid (like the pesticide) in unmanned aerial vehicle's the water tank wave and the continuous oscillation by a wide margin appear, thereby influence the measuring accuracy degree of average liquid level height and the degree of accuracy that the liquid surplus calculated, the surplus dose that leads to the user to see appears the condition of fluctuating by a wide margin (high for a moment and low for a moment), influence user experience, false alarm also can appear, influence user or intelligent spray task's judgement, end in advance sprays, and the operating efficiency is reduced.
To this, the utility model discloses liquid level detection device through increasing a sleeve pipe, places the level gauge and detects in the sleeve pipe, just can effectively block the influence of the liquid level wave in the plant protection machine water tank, improves liquid level measurement's accuracy in the water tank to can correctly calculate the residual dose of water tank, and can ensure liquid level detection's real-time, liquid level detection device's simple structure, with low costs, measuring accuracy, stability and real-time nature are strong, user experience is good.
The plant protection machine and the liquid level detection device thereof of the present invention will be described in detail with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.
Referring to fig. 1, an embodiment of the present invention provides a plant protection machine, which may include a machine body 100 and a liquid level detection device, wherein the liquid level detection device is carried on the machine body 100, and the liquid level detection device of this embodiment is used for measuring the liquid level of the liquid in a water tank 200 of the plant protection machine.
The utility model discloses plant protection machine can be unmanned vehicles such as unmanned aerial vehicle, unmanned vehicle or mobile robot etc. also can be for someone aircraft.
Referring to fig. 2 and 3, the liquid level detecting device of the embodiment of the present invention may include a liquid level meter 1 and a sleeve 2, wherein the sleeve 2 includes a containing cavity 21, a through hole 22 is disposed at one end of the sleeve 2 near the bottom, and the containing cavity 21 is communicated with the liquid in the water tank 200 through the through hole 22. The embodiment of the utility model provides an in, level gauge 1 is partly acceptd in accepting chamber 21 at least, and level gauge 1 is used for detecting the liquid level of the liquid in the water tank 200.
Particularly, when measuring the liquid level of the liquid in the water tank 200, place the liquid level detection device of the embodiment of the present invention in the water tank 200, so, even if the plant protection machine moves or is in an unstable environment and the liquid in the water tank 200 fluctuates, because the sleeve 2 can block the waves, the flow hole 22 on the sleeve 2 can not isolate the flow of the liquid inside and outside the sleeve 2, the heights of the liquid inside and outside the sleeve 2 are approximately equal (the height of the liquid outside the sleeve 2 is the average height of the liquid, that is, the height when the liquid does not fluctuate), and the liquid inside the sleeve 2 can not be affected by the waves outside the sleeve 2; meanwhile, since the space of the housing chamber 21 is narrow and the liquid in the housing chamber 21 cannot form a large wave, the liquid level of the liquid in the housing chamber 21 can be measured by the liquid level meter 1, and the liquid level of the liquid in the water tank 200 can be measured accurately. In addition, by adding the simple sleeve 2, a great deal of effort is not required to be invested to research and develop a high-level software filter, so that the cost is reduced, the real-time performance of measurement is ensured, and the user experience is improved.
Illustratively, the plant protection machine is a mobile cart, and the unstable environment may include: the road surface shakes. Of course, the unstable environment may be other.
Further, the residual liquid amount of the water tank can be determined according to the liquid level detected by the liquid level meter 1, and the plant protection machine can conveniently realize accurate operation.
The utility model discloses a liquid level detection device can solve the problem that the machine carries the water tank and leads to the average liquid level height measurement difficulty and the remaining dose calculation difficulty that the liquid level fluctuates by a wide margin, the continuous oscillation arouses because of the motion of plant protection machine (like starting, turning, scram).
The number of the flow holes 22 may be one or plural.
The specific arrangement position of the flow holes 22 can be selected according to the needs, for example, the number of the flow holes 22 is one, and in some embodiments, as shown in fig. 2 and 3, the flow holes 22 are arranged at the bottom of the casing 2; in other embodiments, the flow openings 22 are provided in the side wall of the casing 2 near the bottom end.
As another example, the number of flow holes 22 includes a plurality, and in some embodiments, a plurality of flow holes 22 are provided at the bottom of the casing 2; in other embodiments, a plurality of flow holes 22 are provided in the sidewall of the casing 2 near the bottom end; in still other embodiments, a portion of the plurality of flow holes 22 is disposed in the bottom of the casing 2 and another portion is disposed in the sidewall of the casing 2 near the bottom end.
The diameter size of circulation hole 22 can be selected as required, the embodiment of the utility model provides a diameter size of convection current through-hole 22 does not specifically limit.
The level gauge 1 can be different types of level gauges, such as radar level gauge, electromagnetism level gauge, ultrasonic wave level gauge etc. can carry out liquid level detection based on different measurement principles, only need level gauge 1 can feed back the liquid level continuous variation can.
For example, referring to fig. 2 and 3, the liquid level meter 1 may include a rod 11, a magnetic float 12, and a plurality of magnetic sensors 13, wherein the rod 11 is at least partially received in the receiving cavity 21, the magnetic float 12 is sleeved on the rod 11, the plurality of magnetic sensors 13 are disposed in the rod 11, an extending direction of the rod 11 is the same as an extending direction of the sleeve 2, and the plurality of magnetic sensors 13 are arranged at intervals along the extending direction of the rod 11. In this embodiment, the magnetic float 12 and the magnetic sensor 13 are accommodated in the accommodating chamber 21, and the magnetic float 12 and the magnetic sensor 13 cooperate to detect the liquid level of the liquid in the tank 200. It is understood that the magnetic float 12 of the present embodiment can slide along the rod body 11, so that the liquid level of the liquid in the water tank 200 can be detected by the magnetic float 12 cooperating with the magnetic induction sensor 13. In addition, the magnetic float 12 may be slidably connected to the rod 11 in other manners, and is not limited to the sleeving manner.
Specifically, when the liquid level is measured, the floating height of the magnetic float 12 is matched with the liquid level height of the liquid in the housing chamber 21 due to the buoyancy, and when the liquid level changes, the position of the magnetic float 12 changes according to the change of the liquid level, and when the magnetic float 12 passes the magnetic sensor 13, the magnetic sensor 13 operates to detect the voltage, wherein the magnitude of the voltage detected by the magnetic sensor 13 closer to the magnetic float 12 is larger, and therefore, the current position of the magnetic float 12 can be determined by the magnitude of the voltage detected by the plurality of magnetic sensors 13, and the liquid level can be determined.
Further, in some embodiments, the liquid level detection device may further include a limiting portion 3, the limiting portion 3 is disposed at the circulation hole 22 to prevent the magnetic float 12 from passing through the circulation hole 22, and the magnetic float 12 cannot fall out of the accommodating cavity 21 by being stopped by the limiting portion 3.
The structure of the limiting part 3 can be designed as required, and exemplarily, in some embodiments, the limiting part 3 is fixed at the bottom of the rod body 11. Optionally, the number of the circulation holes 22 may be one, the circulation holes 22 are disposed at the bottom of the casing 2, the limiting portion 3 includes a support rod and two limiting pieces, the middle portion of the support rod is fixed at the bottom of the rod body 11, the two limiting pieces are disposed at two ends of the support rod respectively, and the limiting pieces are disposed below the circulation holes 22. The two limiting pieces are positioned on the same plane and are arranged at intervals, and the gap between the two limiting pieces is smaller than the size of the magnetic floater 12, so that the magnetic floater 12 is prevented from flowing out of the accommodating cavity 21.
In other embodiments, the position-limiting part 3 is disposed at the bottom of the sleeve 2, and optionally, the position-limiting part 3 is integrally formed with the bottom of the sleeve 2; optionally, the limiting portion 3 and the sleeve 2 are separately disposed, the limiting portion 3 is fixed at the bottom of the sleeve 2, if the limiting portion 3 includes two limiting pieces, the two limiting pieces are disposed on two sides of the rod 11, and the limiting pieces are fixedly connected with corresponding positions of the sleeve 2.
It should be understood that the structure of the limiting portion 3 is not limited to the limiting portion listed in the above embodiments, and other limiting structures may be designed.
Further, in some embodiments, an end of the sleeve 2 near the top is provided with an air pressure balancing hole 23, and the air pressure balancing hole 23 is communicated with the accommodating cavity 21. Through setting up atmospheric pressure balancing hole 23, ensure to accept the atmospheric pressure size unanimity inside and outside the chamber 21, under the atmospheric pressure effect, the average height of the liquid is unchangeable inside and outside sleeve pipe 2 (namely the liquid height in sleeve pipe 2 and the liquid of sleeve pipe 2 outside the highly uniform and change when not undulant less) to ensure that the average height of the liquid is unchangeable inside and outside sleeve pipe 2. It should be understood that the air pressure balancing hole 23 of the embodiment of the present invention is higher than the height of the liquid level to be measured, so as to achieve the effect of balancing the air pressure.
The number of the air pressure balance holes 23 may be one or more.
The specific arrangement position of the air pressure balance holes 23 can be selected according to needs, for example, the number of the air pressure balance holes 23 is one, and in some embodiments, the air pressure balance holes 23 are arranged at the top of the casing 2; in other embodiments, as shown in fig. 2 and 3, the air pressure balancing hole 23 is formed in the sidewall of the casing 2 near the top end thereof.
As another example, the number of the air pressure balance holes 23 is plural, and in some embodiments, the plural air pressure balance holes 23 are provided at the top of the casing 2; in other embodiments, a plurality of air pressure balancing holes 23 are formed in the sidewall of the casing 2 near the top end; in still other embodiments, a portion of the plurality of air pressure balance holes 23 is disposed at the top of the casing 2, and another portion is disposed at the sidewall of the casing 2 near the top end.
The diameter size of atmospheric pressure balancing hole 23 can be selected as required, the embodiment of the utility model provides a do not specifically limit to the diameter size of atmospheric pressure balancing hole 23.
For example, the water tank 200 is filled with liquid, and the liquid can shake to cause the liquid level to generate waves in the moving or unstable environment of the plant protection machine; the liquid level measuring device in the water tank 200 measures the height change of the liquid through the height change of the magnetic floater 12, and the specific measuring mode is as follows: the magnetic floater 12 contains magnetic substances, a row of magnetic sensors 13 (the magnetic sensors 13 may or may not be arranged at intervals) are arranged in the liquid level meter 1, and when the magnetic floater 12 passes through the magnetic sensors 13, the magnetic sensors 13 act to judge the current position of the magnetic floater 12, so that the liquid level is determined.
The utility model discloses level gauge 1 periphery has a sleeve pipe 2 to wrap up level gauge 1, can block the influence of the wave in the water tank 200 to magnetic float 12, and magnetic float 12 only receives the wave influence of accepting in the chamber 21, nevertheless because the space of accepting chamber 21 is narrow and small, and receives the influence of factors such as the surface tension of liquid, and difficult liquid wave in order to form is big, and magnetic float 12 changes relatively stably. Also, the sleeve 2 is provided with a circulation hole 22 and a pressure balancing hole 23 so that when the level of the liquid in the tank 200 is actually raised and lowered, the liquid in the receiving chamber 21 is also raised and lowered together. The limiting part 3 is used for preventing the floater from falling out of the sleeve 2 when the liquid in the water tank 200 reaches the lowest value.
The material of the sleeve 2 can be selected according to the requirement, exemplarily, the material of the sleeve 2 is plastic, and the sleeve 2 made of the plastic has strong corrosion resistance, simple manufacture and low cost.
The utility model discloses liquid level detection device can locate tank lid 220, also can locate other positions of water tank 200, like the inner wall of water tank 200.
Hereinafter, the liquid level detection device is disposed on the tank cover 220 as an example.
The liquid level meter 1 and the tank cover 220 may be integrated or may be separated. Illustratively, the liquid level meter 1 is arranged at the bottom of the water tank cover 220, the liquid level meter 1 can be integrated at the bottom of the water tank cover 220, or the liquid level meter 1 is arranged separately from the water tank cover 220, the liquid level meter 1 is arranged at the bottom of the water tank cover 220, and the separate design can facilitate replacement of the liquid level meter 1.
The fixing mode of the sleeve 2 can be selected according to requirements, for example, the sleeve 2 can be fixed on the top of the liquid level meter 1 or the top of the sleeve 2 covers the bottom of the water tank cover 220.
Illustratively, the sleeve 2 is fixed on the top of the liquid level meter 1, for example, the top of the sleeve 2 is provided with a mounting hole, and the top of the liquid level meter 1 is fixedly arranged in the mounting hole. It should be understood that the fixation between the sleeve 2 and the top of the gauge 1 may also be other fixation means.
For another example, the top of the sleeve 2 covers the bottom of the tank cover 220. Further, the sleeve 2 and the tank cover 220 may be integrally designed or may be separated. For example, the sleeve 2 may be integrated with the bottom of the water tank cover 220, or the sleeve 2 may be provided separately from the water tank cover 220, and the sleeve 2 is mounted on the bottom of the water tank cover 220, wherein the fixing manner between the sleeve 2 and the water tank cover 220 may be an existing fixing manner.
For example, in a possible embodiment, the liquid level meter 1 is installed at the bottom of the tank cap 220, and the sleeve 2 is fixed to the top of the liquid level meter 1 or the top of the sleeve 2 covers the bottom of the tank cap 220.
The utility model discloses sleeve pipe 2 can be a special sleeve pipe 2, also can not special sleeve pipe 2, and the device that has other usage also probably has the water wave to separate and keep off the effect, for example sleeve pipe 2 can be the inlet tube of water tank 200, specifically, the inlet tube extends to the bottom of water tank 200 to place level gauge 1 inside the inlet tube.
Furthermore, in some embodiments, the liquid level detection apparatus further comprises an inertial Measurement unit imu (inertial Measurement unit) for detecting the attitude of the water tank 200 to determine the actual liquid level of the water tank 200 based on the liquid level and attitude detected by the liquid level meter 1. In plant protection machine operation process, the water tank 200 probably has the slope, and the liquid level size that level gauge 1 detected is not the true liquid level of water tank 200, consequently, detects the gesture of water tank 200 through inertial measurement unit to confirm the degree of inclination of water tank 200, and then can confirm the actual liquid level of water tank 200 according to the degree of inclination of water tank 200 and the liquid level that level gauge 1 detected, so, the level measurement of water tank 200 is more accurate, satisfies the accurate operation demand of plant protection machine. The liquid level detection device of the embodiment is integrated with an inertial measurement unit, and it should be understood that the inertial measurement unit can also be an inertial measurement unit of a plant protection machine, so that the measurement cost is reduced.
The size of the liquid level detected by the liquid level piece can be output and displayed so as to facilitate a user to obtain the residual liquid amount of the water tank 200; for another example, the liquid level detection device can send the liquid level size detected by the liquid level meter 1 to an external display device, the liquid level size is displayed through the external display device, and the external display device can be a remote control device of the plant protection machine and/or an external terminal in communication connection with the plant protection machine, such as a mobile phone.
Further, the embodiment of the utility model provides a still provide a tank lid 220, this tank lid 220 can include the liquid level detection device of lid and above-mentioned embodiment, and the lid is located to the liquid level detection device.
The liquid level detection device and the cover body can be designed in an integrated mode or in a separated mode, timing is conducted in a separated mode, and the liquid level detection device is fixed on the cover body.
The embodiment of the utility model provides a still provide a water tank 200, this water tank 200 can include box 210 and the water tank lid 220 of above-mentioned embodiment, and wherein, box 210 is equipped with the stock solution chamber, and the top of box 210 is equipped with the opening, opening and stock solution chamber intercommunication, water tank lid 220 and opening cooperation.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a liquid level detection device of plant protection machine for measure the liquid level of the liquid in plant protection machine's the water tank, its characterized in that, liquid level detection device includes:
a liquid level meter; and
the sleeve comprises an accommodating cavity, a circulation hole is formed in one end, close to the bottom, of the sleeve, and the accommodating cavity is communicated with liquid in the water tank through the circulation hole;
the liquid level meter is at least partially accommodated in the accommodating cavity and is used for detecting the liquid level of liquid in the water tank.
2. The apparatus of claim 1, wherein the flow hole is formed in the bottom of the sleeve and/or a side wall of the sleeve near one end of the bottom.
3. The liquid level detection device of the plant protection machine according to claim 1, wherein the liquid level meter comprises a rod body at least partially accommodated in the accommodating cavity, a magnetic floater sleeved on the rod body, and a plurality of magnetic sensors arranged in the rod body, the extension direction of the rod body is consistent with the extension direction of the sleeve, and the plurality of magnetic sensors are arranged at intervals along the extension direction of the rod body;
the magnetic floater and the magnetic-sensing sensor are accommodated in the accommodating cavity, and the magnetic floater is matched with the magnetic-sensing sensor to detect the liquid level of the liquid in the water tank.
4. The liquid level detection device of a plant protection machine according to claim 3, further comprising a limiting portion, wherein the limiting portion is disposed at the through hole to prevent the magnetic float from passing through the through hole.
5. The liquid level detection device of a plant protection machine according to claim 4, wherein the limiting part is fixed at the bottom of the rod body or at the bottom of the sleeve.
6. The apparatus of claim 1, wherein the gauge is a radar gauge or an ultrasonic gauge.
7. The liquid level detecting device of a plant protection machine according to claim 1, wherein an air pressure balancing hole is formed at one end of the sleeve close to the top, and the air pressure balancing hole is communicated with the accommodating cavity.
8. The apparatus of claim 1, wherein the liquid level gauge is installed at the bottom of a tank cover, and the sleeve is fixed to the top of the liquid level gauge or the top of the sleeve covers the bottom of the tank cover.
9. The liquid level detection apparatus of a plant protection machine according to claim 1, further comprising an inertial measurement unit IMU for detecting a posture of the water tank to determine an actual liquid level of the water tank based on the liquid level detected by the liquid level meter and the posture.
10. A plant protection machine, characterized in that, plant protection machine includes:
a body; and
the fluid level detecting device according to any one of claims 1 to 9, which is mounted on the body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120452328.2U CN215270205U (en) | 2021-03-02 | 2021-03-02 | Plant protection machine and liquid level detection device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120452328.2U CN215270205U (en) | 2021-03-02 | 2021-03-02 | Plant protection machine and liquid level detection device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215270205U true CN215270205U (en) | 2021-12-24 |
Family
ID=79532831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120452328.2U Expired - Fee Related CN215270205U (en) | 2021-03-02 | 2021-03-02 | Plant protection machine and liquid level detection device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215270205U (en) |
-
2021
- 2021-03-02 CN CN202120452328.2U patent/CN215270205U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5184510A (en) | Liquid level sensor | |
| CN107421598B (en) | Liquid quantity monitoring device and monitoring method | |
| US10852174B2 (en) | Device for sensing the pressure of a medium | |
| US6029514A (en) | Device for measuring the volume of liquid in a container | |
| US7059167B2 (en) | Method and arrangement for indirectly determining fill characteristics of a fluid tank on a marine vessel | |
| CN110785639B (en) | Unmanned aerial vehicle's liquid level measurement device, medical kit device, liquid feeding device and unmanned vehicles | |
| US10746579B2 (en) | Method of operating a fluid meter, and fluid meter | |
| CN215270205U (en) | Plant protection machine and liquid level detection device thereof | |
| CN207730303U (en) | Anti- liquid fluctuating interference liquid level detection gauge and detection device | |
| US20030183002A1 (en) | Fluid level indicator and container | |
| CN208672092U (en) | Device for storing liquid, liquid storage detection device and unmanned plane | |
| CN109060394A (en) | The fault detection method and device of sprinkling system | |
| US9057638B2 (en) | System and method for determining the level of a substance in a container based on measurement of resonance from an acoustic circuit that includes unfilled space within the container that changes size as substance is added or removed from the container | |
| CN104132716A (en) | Vehicle-mounted oil flow standard device | |
| CN113795732A (en) | Level gauge, spraying assembly and unmanned aerial vehicle | |
| CN213494430U (en) | Spraying assembly and movable platform with same | |
| US10495506B2 (en) | Liquid level meter | |
| CN112082625A (en) | Liquid level judgment method of liquid level meter | |
| CN212058988U (en) | Level gauge, spraying assembly and unmanned aerial vehicle | |
| CN111623854B (en) | Liquid level detection system and liquid level detection method using same | |
| CN107271004A (en) | Device for determining liquid level in container | |
| CN111089817B (en) | Pesticide liquid medicine droplet holding capacity detection device | |
| WO2001071295A1 (en) | Alternative liquid environment measurement system and method | |
| CN219831422U (en) | Automatic flowing back and weighing type precipitation sensor of fluid infusion | |
| EP3824256B1 (en) | Liquid measurement device for a tank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211224 |