CN207585725U - A kind of liquid-level detection device for water tanks based on agricultural plant protection unmanned plane - Google Patents
A kind of liquid-level detection device for water tanks based on agricultural plant protection unmanned plane Download PDFInfo
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- CN207585725U CN207585725U CN201721656407.5U CN201721656407U CN207585725U CN 207585725 U CN207585725 U CN 207585725U CN 201721656407 U CN201721656407 U CN 201721656407U CN 207585725 U CN207585725 U CN 207585725U
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- medicine
- chest
- detection device
- liquid
- guide rail
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Abstract
The utility model discloses a kind of liquid-level detection device for water tanks based on agricultural plant protection unmanned plane, it is characterized in that, including medicine-chest, the guide rail being arranged in medicine-chest, the annular permanent magnet float being placed on guide rail, the guide rail is set along the medicine-chest mouth of medicine-chest to medicine-chest bottom direction, medicine-chest outer guide rail is provided with a row for detecting the detection device in permanent magnet float magnetic field, at least provided with a pair of of magnetic pole on the permanent magnet float.Detection device can not be contacted with liquid and medicine-chest at work for it, quick and convenient when being mounted and dismounted so as to fulfill medicine-chest, durable；It is simple in structure, it is at low cost.
Description
Technical field
The utility model is related to agricultural plant protection unmanned air vehicle technique fields, and in particular to a kind of based on agricultural plant protection unmanned plane
Liquid-level detection device for water tanks.
Background technology
With the quickening of Urbanization Process In China, rural laborer becomes more and more rare, and agriculture human cost increasingly increases
Add.Recently as the increasingly ripe of unmanned air vehicle technique, unmanned plane has obtained a large amount of application in agricultural production.Plant protection nobody
Machine pesticide spraying technology can long-distance remote control operation, operating personnel is avoided to be exposed to the danger of pesticide, while from greatly improving and make
Industry efficiency.Medicine-chest is the key equipment of plant protection UAV flight, and internal loading is liquid to be sprayed.
In plant protection unmanned plane operation process, the liquid level of medicine-chest is in the presence of fluctuation is violent, the physicochemical property of liquid is different, corrosion
The features such as strong；And the electronic more rotor plant protection unmanned planes of mainstream are limited to power battery at present, and 10 kilograms or so of payload is single
General 10 minutes or so cruise duration of sortie.Medicine-chest, supplement liquid flux etc., therefore medicine can be frequently replaced in operation process
Case design needs fast assembling-disassembling, it is desirable to which the level sensing design of medicine-chest requires careful consideration.At present, domestic and international common contact
The liquid-level detecting method of formula has：Differential pressure type level measurement, the measurement of servo type float liquid level, electric pole type level gauging, flowmeter type
Level gauging；Contact-free level detection method has：Ultrasonic liquid level measuring, optical fiber liquid level measure, laser liquid-level measures, radar
Wave level gauging, machine vision formula measure.And in unmanned plane medicine-chest due to frequently replacing, so the level measuring method of contact
Dismounting is made to become cumbersome；Contactless ultrasonic wave, optical fiber, laser, radar and computer vision measuring method mechanical structure is answered
It is miscellaneous, it is not easy to install, and price is also relatively high in unmanned plane.
Utility model content
In order to solve the above-mentioned technical problem the utility model provides a kind of high water tank inspection based on agricultural plant protection unmanned plane
Survey device.
The utility model is achieved through the following technical solutions：
A kind of liquid-level detection device for water tanks based on agricultural plant protection unmanned plane, including medicine-chest, the guide rail being arranged in medicine-chest,
Annular permanent magnet float on guide rail is placed on, under the buoyancy of liquid, permanent magnet float can be moved up and down along guide rail；Guide rail
Moving for permanent magnet float is situated so as to along the medicine-chest mouth of medicine-chest to medicine-chest bottom direction；Medicine-chest outer guide rail is provided with row use
Detection device in detection permanent magnet float magnetic field, at least provided with a pair of of magnetic pole on permanent magnet float.
Detection device is set as a row, and single detection device corresponds to corresponding height, when permanent magnet float is with liquid displacement
Corresponding height is moved, the detection device of corresponding height will be according to magnetic field detection to permanent magnet float, to realize elevation carrection.It adopts
With the device, detection device can not be contacted with liquid and medicine-chest at work, when being mounted and dismounted so as to fulfill medicine-chest, quick side
Just, it is durable；It is simple in structure, it is at low cost.Connectionless cable, avoids away circuit between medicine-chest and detection device；Between the two
Also do not have to contact, avoid the abrasion of medicine-chest and detection device.
Preferably, detection device includes the Hall switch that a row is provided along the rail, for acquiring Hall switch signal
Priority encoder and the analog-to-digital conversion module for transcriber signal.Inspection to permanent magnet float is realized using Hall switch
It surveys, when permanent magnet float corresponding Hall switch position as liquid level is moved to, this switching device just generates state transition, inspection
The position that this state transition just knows medicine-chest liquid level is measured, so as to calculate remaining dose in medicine-chest.
Preferably, the detection device includes the tongue tube that a row sets along guidance cavity, for acquiring reed switch signal
Priority encoder and and the analog-to-digital conversion module for transcriber signal.
Further, the priority encoder and analog-to-digital conversion module are both connected on LDO power supply circuits.LDO power supply electricity
Road, that is, low pressure difference linearity voltage stabilizing power supplying circuit, at low cost using the circuit, low noise, quiescent current is small, ensures priority encoding
Device and the stability of analog-to-digital conversion module work.
Preferably, the guide rail is fixed on medicine-chest bottom into column and one end.
Further, in order to reduce the influence that guide rail moves up and down permanent magnet float, the guide rail is into cylindric.
Further, it for the ease of the placement of permanent magnet float, also allows for measuring liquid maximum variable amount, the guide rail
One end is located at below the medicine-chest mouth of medicine-chest.
The utility model compared with prior art, has the following advantages and advantages：
1st, detection device can not be contacted with liquid and medicine-chest when the utility model at work, pacify installation and dismantling so as to fulfill medicine-chest
It is quick and convenient when unloading, it is durable；It is simple in structure, it is at low cost.
Description of the drawings
Attached drawing described herein is used for providing further understanding the utility model embodiment, forms the one of the application
Part does not form the restriction to the utility model embodiment.
Fig. 1 is the schematic diagram of the utility model.
Reference numeral in figure it is entitled：
1st, medicine-chest, 2, permanent magnet float, 3, guide rail.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, with reference to embodiment and attached drawing,
The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this
Utility model is not intended to limit the scope of the present invention.
Embodiment 1
A kind of liquid-level detection device for water tanks based on agricultural plant protection unmanned plane as shown in Figure 1, including medicine-chest 1, is arranged on
Guide rail 3 in medicine-chest, the annular permanent magnet float 2 being placed on guide rail 3, guide rail 3 are set along the medicine-chest mouth of medicine-chest to medicine-chest bottom direction
Put, medicine-chest outer guide rail is provided with a row for detecting the detection device in permanent magnet float magnetic field, permanent magnet float up to
It is provided with a pair of of magnetic pole less.The magnetic field that annular permanent magnet float generates is in vertical distribution with medicine-chest wall, detection device intersection.
In order to enhance the signal of permanent magnet float, multipair magnetic pole can be set on annular permanent magnet float, for example, 2 pairs, 3 pairs,
4 equities.Particular number selects as the case may be.
This detector row part has a gap with medicine-chest outer wall, which can be adjusted by adjusting the magnetic field intensity of permanent magnet,
So as to not have to contact with medicine-chest and liquid when being achieved that detection device work.
Embodiment 2
Principle based on above-described embodiment, the present embodiment disclose a specific embodiment.
Various ways realization can be used in detection device, and the specific two kinds of embodiments of this implementation are explained, and need what is illustrated
Thing, based on 1 principle of embodiment, the scheme realized using other structure of the detecting device is in the protection domain of this programme.
First, detection device includes the Hall switch that a row is provided along the rail, for acquiring the preferential of Hall switch signal
Encoder and the analog-to-digital conversion module for transcriber signal.As shown in Figure 1, priority encoder is preferential using -5 line of 32 line
Encoder realizes the connection with multiple Hall switch.Analog-to-digital conversion module is realized exports binary digital signal by priority encoder
Be converted into analog voltage output, by -5 line priority encoder of 32 line export 5bit digital signals be connected to analog-to-digital conversion module
High 5 inputs, pass through RC oscillators and generate clock signal, the continuous simulation output for realizing liquid level signal of timing.
Second, the detection device includes the tongue tube that a row is provided along the rail, for acquiring the preferential of reed switch signal
Encoder and and the analog-to-digital conversion module for transcriber signal.The principle of this detection device and the original of above-mentioned Hall switch
It manages similar.
Priority encoder and analog-to-digital conversion module are both connected on LDO power supply circuits.
When the required precision of medicine-chest level monitoring is not high, 1-3 line priority encoder of 8 line can be used to realize medicine-chest liquid
8 deciles of position；When the required precision of medicine-chest level monitoring improves, -3 line priority encoder of 8 line can be increased, be combined into 16-
4 line priority encoders, -5 line priority encoder of 32 line etc..Such as Fig. 1, using 4-3 line priority encoders of 8 line, medicine-chest liquid is realized
32 deciles of position, and export the binary system liquid level information of 5bit.
Embodiment 3
Structure based on above-described embodiment, the present embodiment optimize above-described embodiment.That is guide rail is into column and one end
It is fixed on medicine-chest bottom, and guide rail is into cylindric.
Permanent magnet float is loop configuration, can be annulus, Fang Huan, certainly, other structures can also be used.
One end of guide rail is located at below the medicine-chest mouth of medicine-chest.It certainly, also can be as shown in Figure 1, guide rail be provided only on medicine-chest
The position of Partial Height or close medicine-chest side wall.
Above-described specific embodiment, the purpose of this utility model, technical solution and advantageous effect have been carried out into
One step is described in detail, it should be understood that the foregoing is merely specific embodiment of the present utility model, is not used to limit
Determine the scope of protection of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replaced
It changes, improve, should be included within the scope of protection of this utility model.
Claims (7)
1. a kind of liquid-level detection device for water tanks based on agricultural plant protection unmanned plane, which is characterized in that including medicine-chest, be arranged on medicine-chest
Interior guide rail, the annular permanent magnet float being placed on guide rail, the guide rail are set along the medicine-chest mouth of medicine-chest to medicine-chest bottom direction, institute
It states medicine-chest outer guide rail and is provided with a row for detecting the detection device in permanent magnet float magnetic field, on the permanent magnet float at least
It is provided with a pair of of magnetic pole.
2. a kind of liquid-level detection device for water tanks based on agricultural plant protection unmanned plane according to claim 1, which is characterized in that
The detection device include a row be provided along the rail Hall switch, for acquire the priority encoder of Hall switch signal and and
For the analog-to-digital conversion module of transcriber signal.
3. a kind of liquid-level detection device for water tanks based on agricultural plant protection unmanned plane according to claim 1, which is characterized in that
The detection device includes the tongue tube that a row is provided along the rail, for the priority encoder that acquires reed switch signal and for turning
Change the analog-to-digital conversion module of code device signal.
4. a kind of liquid-level detection device for water tanks based on agricultural plant protection unmanned plane according to Claims 2 or 3, feature exist
In the priority encoder and analog-to-digital conversion module are both connected on LDO power supply circuits.
5. a kind of liquid-level detection device for water tanks based on agricultural plant protection unmanned plane according to claim 1, which is characterized in that
The guide rail is fixed on medicine-chest bottom into column and one end.
6. a kind of liquid-level detection device for water tanks based on agricultural plant protection unmanned plane according to claim 5, which is characterized in that
The guide rail is into cylindric.
7. a kind of liquid-level detection device for water tanks based on agricultural plant protection unmanned plane according to claim 5, which is characterized in that
One end of the guide rail is located at below the medicine-chest mouth of medicine-chest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721656407.5U CN207585725U (en) | 2017-12-01 | 2017-12-01 | A kind of liquid-level detection device for water tanks based on agricultural plant protection unmanned plane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721656407.5U CN207585725U (en) | 2017-12-01 | 2017-12-01 | A kind of liquid-level detection device for water tanks based on agricultural plant protection unmanned plane |
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| Publication Number | Publication Date |
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| CN207585725U true CN207585725U (en) | 2018-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721656407.5U Expired - Fee Related CN207585725U (en) | 2017-12-01 | 2017-12-01 | A kind of liquid-level detection device for water tanks based on agricultural plant protection unmanned plane |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112278284A (en) * | 2020-10-30 | 2021-01-29 | 南京拓攻自动驾驶技术研究院有限公司 | Liquid level monitoring device and plant protection unmanned aerial vehicle comprising same |
| CN113167631A (en) * | 2020-05-28 | 2021-07-23 | 深圳市大疆创新科技有限公司 | Liquid level meter, measuring method thereof, spraying assembly and unmanned aerial vehicle |
-
2017
- 2017-12-01 CN CN201721656407.5U patent/CN207585725U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113167631A (en) * | 2020-05-28 | 2021-07-23 | 深圳市大疆创新科技有限公司 | Liquid level meter, measuring method thereof, spraying assembly and unmanned aerial vehicle |
| WO2021237582A1 (en) * | 2020-05-28 | 2021-12-02 | 深圳市大疆创新科技有限公司 | Liquid level meter and measuring method therefor, and spraying assembly and unmanned aerial vehicle |
| CN112278284A (en) * | 2020-10-30 | 2021-01-29 | 南京拓攻自动驾驶技术研究院有限公司 | Liquid level monitoring device and plant protection unmanned aerial vehicle comprising same |
| CN112278284B (en) * | 2020-10-30 | 2021-12-03 | 南京拓攻自动驾驶技术研究院有限公司 | Liquid level monitoring device and plant protection unmanned aerial vehicle comprising same |
| WO2022088207A1 (en) * | 2020-10-30 | 2022-05-05 | 南京拓攻自动驾驶技术研究院有限公司 | Liquid level monitoring device and plant protection unmanned aerial vehicle comprising same |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180706 Termination date: 20181201 |
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| CF01 | Termination of patent right due to non-payment of annual fee |