CN102356733A - Green agriculture microwave anti-freezing system - Google Patents
Green agriculture microwave anti-freezing system Download PDFInfo
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- CN102356733A CN102356733A CN2011102524807A CN201110252480A CN102356733A CN 102356733 A CN102356733 A CN 102356733A CN 2011102524807 A CN2011102524807 A CN 2011102524807A CN 201110252480 A CN201110252480 A CN 201110252480A CN 102356733 A CN102356733 A CN 102356733A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a green agriculture microwave anti-freezing system, which comprises a control module and a plurality of wireless microwave emitting devices, wherein the control module comprises an environment sensor and an environmental power central processor; each microwave emitting device mainly comprises a wireless microwave emitter and a wireless microwave emitting antenna; the heating frequencies of emitted microwaves are at an S band and are 2.4-2.5 GHz, and the central wavelength is 0.122 meter; and the environment sensor, the environmental power central processor, the wireless microwave emitters and a power supply are connected through circuits. A multi-direction plate type antenna, a rotary antenna or a leakage coaxial cable antenna can be selected according to different using requirements. The microwave frequency and the emitting power are adjusted synchronously according to detected real-time data, so that different antenna systems can be selected according to different environment factors, different optimal growing frequencies are selected for different crops, the system advantages of timeliness, accuracy and adaptability are shown fully, and the economical aims of low energy consumption, low radiation and high efficiency are fulfilled.
Description
Technical field
The present invention relates to heating system, relate to and a kind of crops are adopted the functional electronics technology of wireless heating using microwave, specifically finger can be defendd the green agriculture microwave winterization system of cold spell in spring (flash freezing).
Background technology
China is the big country that agricultural product are produced and sold and exported.Yet because global climate is unusual, in recent years, each province and city usually took place extremely to damage to plants caused by sudden drop in temperature.The low temperature cold in the late spring that particularly happens suddenly the beginning of the year; Cause manyly having the crops frost bitten of higher economic worth or freezing to death; Cause the extensive underproduction of crops, the greenbelt around particularly important tourist attractions and the urban landmark property building, its economic loss that suffers is amplified especially at double.
At present agriculture most of antifreezing measures only limit to into the winter fertilising, and agricultural garden litters protects ground temperature freezing cold-resistant, and remedies after the calamity and resume work.Other measures are as building green house, or it is too high to tend to cost with the ways of diaphragm parcel crops, and can't prevent prominent cold freezing extremely.
Normal other means to prevent freezings that use of peasants, such as with hot water spray to crops, the hot gas that perhaps will burn bavin with fan blower blows to the farmland with the raising ambient temperature.These ways have several big problems: the first, can only be to the farmland of small size, and can not cover that large tracts of land is cold freezes.The second, efficient is low.Energy major part in transfer process is disabled to consume and slatterns, and causes cost to uprise.The 3rd, a large amount of waters possibly influence the quality of crops.The 4th, a large amount of cigarette ashes that the burning bavin blows out can pollute surrounding enviroment.
In addition, China has also introduced a collection of large-scale frost prevention fan from Japan and has been used for antifreeze.These fans cost an arm and a leg, controlled range little (generally can only regulate 1 ~ 2 degree), and energy consumption is high, and noise is very big when using evening, the masses' normal rest around the influence.
Also mentioned in the United States Patent (USP) 4434345 and utilized microwave to prevent cold freezing, but, do not reached sanitary standard because the transmitter power that this patent is used is too high.Simultaneously, the portable emitter that this patent is used requires under the frost situation, and the peasant is pushing away dolly and heating to individual plants.At first too high transmitting power can endanger the peasant of go-cart; The place that next this device can be implemented must be fit to dolly and between plant, move; Moreover this device can not continue the heating, under the environment of low temperature, dolly one is pushed open, the temperature of plant will soon reduce, and does not reach the actual effect that prevents frostbite.This invention has simultaneously also proposed above each strain plant, directly to install the scheme of transmitter, but this way cost is higher, lacks operational feasibility.
Summary of the invention
The objective of the invention is to overcome the defective of above-mentioned prior art; Guaranteeing under safety and environmental protection, the free of contamination prerequisite a kind of green agriculture microwave winterization system to be provided; The emission low-power, continuous, balanced wireless microwave is through letting the vibration of inside plants hydrone realize the intensification to plant.Automaticity is high, and energy consumption is low, and is cheap, controlled range is big, can reach heats at short notice, can also be through regulating germination, the flowering time that temperature controlled crops.
To achieve these goals, technical scheme of the present invention is following:
Green agriculture microwave winterization system comprises a control module and some wireless microwave launchers;
Described control module mainly is made up of environment induction device, environment power central processing unit;
Each microwave launcher mainly is made up of wireless microwave emitter and wireless microwave transmitting antenna; Microwave launcher can use separately, also can a plurality of combinations use, and the heating frequency of microwave is in the S section, and frequency is 2.4 GHz to 2.5GHz, and centre wavelength is 0.122m; 2.4Ghz to 2.5Ghz frequency microwave be known today can be effectively by fruit, the wave band that plant leaf etc. absorb.
Connect through circuit between environment induction device, environment power central processing unit, wireless microwave emitter, the power supply.
The microwave transmitting antenna has various ways, according to the optional majority direction of different user demands Patcho antenna, rotary antenna or leakage coaxial cable antenna.
Wherein multi-direction Patcho antenna is made up of four plate antennas, is equilateral rectangular pyramid housing shape, and is up big and down small, laterally inclined, to around on the lower side the side, four direction crops launch wireless microwave.
Rotary antenna is strip, and its cross section is a rectangular housing, and there is frp protective coverboard the outside, can horizontally rotate around symmetrical center line, and microwave along circular scanning, is cyclical intermission and covers in transmitting boundary.
The leakage coaxial cable antenna is that leaky cable double as antenna that utilize to realize the signal transmission uses, and its structure and common leakage coaxial cable basically identical are made up of inner wire, dielectric and outer conductor three parts that have a periodicity slotted eye.When electromagnetic wave vertically transmitted in the leakage coaxial cable antenna, to extraneous radiated electromagnetic wave, the microwave distribution can be provided with according to paving track flexibly through slotted eye.Consider the microwave attenuation factor, when transmission range was longer, certain-length need be provided with a signal intensive at interval.
The environment induction device comprises ambient temperature sensor, solar radiation sensor, humidity sensor, air velocity transducer etc.Its installation environment and setting height(from bottom) need to be consistent with the air layer height of the actual growth of plant.The environment induction device is sent to the environment power central processing unit with the real time data that records through connecting circuit.
The crops parameter that can preset on the environment power central processing unit has: minimum growth bearing temperature, optimum growth temp, optimum response frequency.The environment power central processing unit compares and analytical calculation according to real-time detection data and the predefined ideal parameters that sensor sends, and calculates the size that will keep the required microwave energy of plant normal growth under this environment.When being lower than design temperature, regulate the emissive porwer of wireless microwave emitter automatically, all the time with the temperature maintenance of corps leaf surface near optimum temperature.Under cold especially situation, when system prediction to can't keep the minimum bearing temperature of crops the time, system can give a warning in real time, reminds people is taked other measure.
The present invention has the following advantages:
1. the present invention combines microwave emitter with the environment induction device; According to detected real time data adjusted in concert microwave frequency and transmitting power, can select dissimilar antenna systems according to different factors such as the situation of plant own, cost control, place scale and surrounding environment, select different optimum growh frequencies for different crops; Demonstrated fully system advantage timely, accurate, that be suitable for; To realize low energy consumption, low radiation, high efficiency economic aim.
2. working range of the present invention is wide, and the coverage of each transmitter can reach 4 to 8 mu, and automaticity is high, need not artificial control on duty.
3. national operation place microwave radiation hygiene standard (GB 10436-89) regulation is 50 microwatt/square centimeters; 1.8 microwatt/square centimeters that the present invention the most often uses (be with plant temperature from subzero 6 the degree be heated to 0 the degree theoretical value; China's most of areas does not need to surpass this power) illumination energy require to be significantly less than 38 microwatt/square centimeters of the provisional sanitary standard regulation of microwave radiation, therefore relate to personnel and need not to use and protect dress ornament.Signal strength signal intensity fluctuation range of the present invention can be controlled in 10%, has guaranteed the safe handling of system.Simultaneously, because most of cold freezing occurs in night, system does not need personnel on duty when operate as normal yet, and therefore the amount of radiation to human body can further reduce.
4. in use environmental requirement is low to external world to be somebody's turn to do invention, and consumed power during operate as normal can not produce other any type of pollutions.
5. except antifreeze, a series of crop growth demands that requirement is arranged for temperature such as the present invention can also be used to controlling germination, bloom.
Description of drawings
Fig. 1 is a green agriculture microwave winterization system sketch map;
Fig. 2 is the billboard antenna structural representation;
Fig. 3 is the billboard antenna microwave distribution map under the individual antenna emission source;
Fig. 4 is a billboard antenna arranged crosswise microwave distribution map;
Fig. 5 is the system architecture sketch map of rotary antenna device;
Fig. 6 is the left view of Fig. 5;
Fig. 7 is the microwave distribution map of single rotary antenna;
Microwave distribution map when Fig. 8 turns over an angle of 90 degrees for rotable antenna;
Fig. 9 is a leakage coaxial cable antenna scheme of installation;
Figure 10 is design considerations of the present invention: frost prevention principle figure.
Description of reference numerals:
1 environment induction device, 2 environment power central processing units, 3 wireless microwave emitters, 4 multi-direction Patcho antennas; 41 protective covers, 5 microwave coverages, 6 rotary antennas, 61 mechanical rotary devices, 62 frp protective coverboards; 7 power supplys, 8 leakage coaxial cable antennas, 9 signal intensives;
Embodiment
Before system installs; The staff at first will measure various crops parameters; As minimum growth bearing temperature, optimum growth temp and according to water oil content in the plant body than the optimum response frequency of analyzing these crops that draw, and with each item setting value input environment power central processing unit 2.
Can select dissimilar wireless microwave transmitting antennas for use according to acreage of farm, landform situation and cooling degree during actual the use.
Environment induction device 1 is installed near the crops, and placing environment should be consistent with crops, and setting height(from bottom) should be in the air layer height of plant normal growth, and is true to avoid prohibited data detection.
Whole system connects power supply 7 backs and drops into actual motion; Environment induction device 1 is sent to environment power central processing unit 2 with the real time data that records (temperature, day luminous intensity, humidity, wind speed), and environment power central processing unit 2 compares and calculates, analyzes according to these transmission data and preset parameters; Automatically control the emissive porwer of wireless microwave emitter 3.
The embodiment of the invention is that frost prevention principle (by Richard L. Snyder works) according to University of California Davis is as design basis.Data of testing in the chrysanthemum garden in Indian mountain valley, California and in other orchards and the test carried out of crops place have all obtained identical result.When environmental temperature is low to moderate-6 when spending, reach antifrost effect, the blade face temperature that keep plant normal growth then need be imported 18 watts/every square metre energy greater than 0 degree, i.e. 1.8 milliwatts/every square centimeter.System adopts the frequency S section that is used for heating using microwave of regulation in the world under most of situation, frequency is 2.4 GHz to 2.5GHz, and centre wavelength is 0.122m.Through test, it is a very effective frequency that this frequency heats up to crops.In other cases, according to concrete instructions for use, tranmitting frequency can exceed 2.4 to this scope of 2.5Ghz, also can be lower than this scope.
Embodiment 1:
Should select multi-direction Patcho antenna 4 or rotary antenna 6 at relatively flat, farm and tea garden that area is bigger, and fixedly mount wireless microwave launcher.Advantage is that antenna periphery microwave area coverage is big, and reaction is fast, can open and close at any time; But fixed point is installed, fixed point is used, and mobile flexibility is not enough.To reach signal strength signal intensity during use and on average cover relatively difficulty, can adopt a plurality of transmitters to intersect and cover to overcome this defective, as shown in Figure 4.Even in order to guarantee signal, each transmitter needed debugging to cooperate before fixing, under the lower situation of environmental temperature, was fit to adopt a plurality of transmitters.
Like Fig. 5, rotary antenna shown in Figure 6 to crops around it along circumference scan round, the microwave coverage 5 of single rotary antenna 6 emissions is as shown in Figure 7, the ovalize strip in the both sides of rod shape antenna; Because the rotation of antenna, can realize the uniform signal of crops is on every side covered, as shown in Figure 8, Installation and Debugging are fairly simple, but can produce the covering disappearance gap of short time to crops on every side, and the heat supply that the short time can occur is interrupted.It is not that use in low especially area that rotary antenna 6 is adapted at environmental temperature.
Embodiment 2:
Less or be scattered distribution when acreage of farm, or when existing, can use the leakage coaxial cable antenna 8 that proposes among the present invention in this case with forms such as terraced fields, mountain regions.
Leakage coaxial cable antenna 8 does not adopt and is permanently fixed installation, after picking out from wireless microwave emitter 3, according to differing heights and the topography profile of crops, adopts temporary fixed making somebody a mere figurehead perhaps directly to be thrown on the ground, farm.Because cable is a soft materials, uses this kind cable antenna can wireless microwave be covered in above the crops of complex terrain neatly, both satisfied that the uniform wireless microwave of crops was covered, guaranteed not wasting of wireless microwave again.As shown in Figure 9, but because leakage coaxial cable antenna 8 has certain-length, wireless microwave signal can weaken greatly along with the change of transmission range, and the surrounding enviroment factor also can influence fade performance.In order to guarantee the emissive porwer of wireless microwave, when transmission range was big, leakage coaxial cable antenna 8 needed whenever at a distance from a segment distance signal intensive 9 to be installed.
The leakage coaxial cable antenna can guarantee signal distributions evenly, effectively in the small size scope, installation simultaneously is simple, and cost is low.Cable and transmitter can be entered the room when not using and collected keeping, and protection equipment lowers use cost.Be suitable for individual tea plantation area little, to the actual national conditions of cost sensitivity.Shortcoming is that this antenna ratio is fit to short plant, and high strain plant is needed the stringing hoisting depth, and is high not as using open antenna efficiency when covering the large tracts of land farm.
Claims (5)
1. green agriculture microwave winterization system is characterized in that: comprise a control module and some wireless microwave launchers;
Described control module mainly is made up of environment induction device, environment power central processing unit;
Each microwave launcher comprises wireless microwave emitter and wireless microwave transmitting antenna; Emitter can use separately, also can use a plurality of emitter combinations to use, and the heating frequency of microwave is selected the S section; Frequency is 2.4 GHz to 2.5GHz, and centre wavelength is 0.122m;
Connect through circuit between environment induction device, environment power central processing unit, wireless microwave emitter, the power supply.
2. green agriculture microwave winterization system according to claim 1; It is characterized in that: described microwave transmitting antenna is multi-direction Patcho antenna; Form by four plate antennas, be equilateral rectangular pyramid housing shape, up big and down small; Laterally inclined, to around on the lower side the side, four direction crops launch wireless microwave.
3. green agriculture microwave winterization system according to claim 1 is characterized in that: described microwave transmitting antenna is the strip rotary antenna, and its cross section is a rectangular housing, and there is frp protective coverboard the outside, can horizontally rotate around symmetrical center line.
4. green agriculture microwave winterization system according to claim 1; It is characterized in that: described microwave transmitting antenna is the leakage coaxial cable antenna; Its structure and common leakage coaxial cable basically identical are by inner wire, dielectric with have periodically outer conductor three parts of slotted eye and form;
Electromagnetic wave in the leakage coaxial cable antenna vertically in the transmission, through slotted eye to extraneous radiated electromagnetic wave; When transmission range was longer, certain-length need be provided with a signal intensive at interval.
5. green agriculture microwave winterization system according to claim 1 is characterized in that: described environment induction device comprises ambient temperature sensor, solar radiation sensor, humidity sensor, air velocity transducer; The environment induction device is sent to the environment power central processing unit with the real time data that records through connecting circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102524807A CN102356733A (en) | 2011-08-30 | 2011-08-30 | Green agriculture microwave anti-freezing system |
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| CN2011102524807A CN102356733A (en) | 2011-08-30 | 2011-08-30 | Green agriculture microwave anti-freezing system |
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| CN102356733A true CN102356733A (en) | 2012-02-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804470A (en) * | 2014-12-31 | 2016-07-27 | 张文知 | Landscape type large-power snow-removal and deicing microwave tower |
| CN106486783A (en) * | 2016-11-30 | 2017-03-08 | 中国科学技术大学 | The new leakage cable of internet of things oriented application |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2120065A (en) * | 1982-04-27 | 1983-11-30 | Michael Frederick Huber | Heating plants |
| US4434345A (en) * | 1982-07-29 | 1984-02-28 | Muscatell Ralph P | Microwave system for frost protection of fruit trees |
| DE3244428A1 (en) * | 1982-12-01 | 1984-06-07 | Peter Dipl.-Phys. 7000 Stuttgart Hoffmann | Process and device for heating live plants using microwaves |
| CN2322258Y (en) * | 1998-04-24 | 1999-06-02 | 重庆蜀明科技发展有限公司 | Microwave generator |
| CN2748496Y (en) * | 2003-10-31 | 2005-12-28 | 杨成颖 | Soil Microwave Heating Machine |
| ES2221540B2 (en) * | 2002-10-23 | 2006-08-01 | Universidad Politecnica De Madrid | PROCEDURE FOR ELECTROMAGNETIC IRRADIATION OF GRASS AND ITS USES FOR CARE AND MAINTENANCE OF GRASS. |
| WO2009042828A2 (en) * | 2007-09-26 | 2009-04-02 | Raytheon Company | System and apparatus for preventing freezing of crops |
-
2011
- 2011-08-30 CN CN2011102524807A patent/CN102356733A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2120065A (en) * | 1982-04-27 | 1983-11-30 | Michael Frederick Huber | Heating plants |
| US4434345A (en) * | 1982-07-29 | 1984-02-28 | Muscatell Ralph P | Microwave system for frost protection of fruit trees |
| DE3244428A1 (en) * | 1982-12-01 | 1984-06-07 | Peter Dipl.-Phys. 7000 Stuttgart Hoffmann | Process and device for heating live plants using microwaves |
| CN2322258Y (en) * | 1998-04-24 | 1999-06-02 | 重庆蜀明科技发展有限公司 | Microwave generator |
| ES2221540B2 (en) * | 2002-10-23 | 2006-08-01 | Universidad Politecnica De Madrid | PROCEDURE FOR ELECTROMAGNETIC IRRADIATION OF GRASS AND ITS USES FOR CARE AND MAINTENANCE OF GRASS. |
| CN2748496Y (en) * | 2003-10-31 | 2005-12-28 | 杨成颖 | Soil Microwave Heating Machine |
| WO2009042828A2 (en) * | 2007-09-26 | 2009-04-02 | Raytheon Company | System and apparatus for preventing freezing of crops |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804470A (en) * | 2014-12-31 | 2016-07-27 | 张文知 | Landscape type large-power snow-removal and deicing microwave tower |
| CN106486783A (en) * | 2016-11-30 | 2017-03-08 | 中国科学技术大学 | The new leakage cable of internet of things oriented application |
| CN106486783B (en) * | 2016-11-30 | 2019-06-11 | 中国科学技术大学 | The novel leakage cable of internet of things oriented application |
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Application publication date: 20120222 |