CN104123444B - Real-time irrigation forecast system and method based on region Soil Moisture Monitoring and remotely-sensed data - Google Patents
Real-time irrigation forecast system and method based on region Soil Moisture Monitoring and remotely-sensed data Download PDFInfo
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- CN104123444B CN104123444B CN201410328095.XA CN201410328095A CN104123444B CN 104123444 B CN104123444 B CN 104123444B CN 201410328095 A CN201410328095 A CN 201410328095A CN 104123444 B CN104123444 B CN 104123444B
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Abstract
The present invention relates to a kind of real-time irrigation forecast system and method based on region Soil Moisture Monitoring and remotely-sensed data, Irrigation Forecast system includes remote sensing information soil moisture content inverting module, the real-time monitoring modular of region soil moisture content and region real-time irrigation forecast module；Remote sensing information soil moisture content inverting module transmits the region soil moisture content spatial coefficient of determination to region real-time irrigation forecast module；Soil moisture content real-time monitoring modular in region transmits the real-time Soil Moisture Monitoring result in region to region real-time irrigation forecast module；Region real-time irrigation forecast module chooses the picture dot corresponding with soil moisture content or Soil Moisture Monitoring point, picture dot and measured value are fitted, obtain the coefficient by point scale to regional scale spread, and the soil moisture content or soil moisture content data monitored in real time is combined using the coefficient, simulated domain yardstick soil moisture content or the real-time spatial distribution map of soil moisture content, complete the real-time prediction to regional irrigation situation.The present invention can be widely applied to Irrigation Project Design decision-making and the field such as management and Regional Drought monitoring.
Description
Technical field
The present invention relates to a kind of real-time irrigation forecast system and method, especially with regard to one kind based on region Soil Moisture Monitoring and
The real-time irrigation forecast system and method for remotely-sensed data.
Background technology
Due to the influence of global warming and rainfall spatial and temporal distributions inequality, the northern area of China arid takes place frequently, damage caused by a drought adds
Play, or even also occur the situation of extreme drought in southern some areas, the future of agriculture irrigated area faces the risk aggravation of arid.Cause
This, quickly and accurately monitors and assesses arid situation, not only can provide scientific basis for irrigated area water distribution, and be advantageous to drought resisting
The development of work, to improving, irrigated areas administration is horizontal, ensures that national food security plays a significant role.
Early in 1973, Brown and Rosenberg just by carrying sensor inverting thermal infrared temperature on board the aircraft,
And thermal infrared temperature to be used for the calculating of maturity in field evapotranspiration；Hereafter the research for evapotranspiration being calculated using remotely-sensed data is sent out rapidly
Exhibition.At present, the calculating of remote sensing evapotranspiration still needs the auxiliary of part meteorological measuring, therefore generally use establishes remote sensing steaming
The method of emission model calculates evapotranspiration.In terms of soil water assimilation, Walker assimilates to Water Content of Top Soil, hair
Now when initial value degeneration is remote sensing evapotranspiration model initial value and larger measured value deviation, data assimilation can improve whole soil
The simulation precision of earth section moisture content.Crow research shows when precipitation data error is larger, assimilates Water Content of Top Soil
The simulation precision of soil moisture and Surface latent heat fluxes can be improved.Pipuni is in land-surface processes model LSM (Land Surface
Model Surfaces soil water content, surface temperature and latent heat and sensible heat flux are assimilated respectively in), the results showed that when adopting
During by the use of Surfaces soil water content as assimilation observation, the simulation precision of root zone soil water content can be improved.However, using distant
Some defects and difficult point be present in sense image inverting ground evapotranspiration and assimilation soil moisture content：First, the high-resolution currently obtained
There is regular hour hysteresis quality in the remote sensing image that passes by, it is difficult to carry out real time inversion and analysis and utilization；Second, evapotranspired for remote sensing
Send out application of the model on region, it is necessary to model accuracy is evaluated by ground observation, and the ground that remote-sensing inversion obtains
Table parameter space yardstick is between hundreds of meters to several kilometers, it is therefore desirable to the ground that full and accurate ground observation value obtains with these invertings
Table parameter is matched.
Real-time irrigation forecast is the basis for formulating dynamic irrigation program, to irrigated area water saving, volume increase and improves economic effect
Benefit plays an important role.Using Field Water Balance equation, by measuring and calculating rainfall, Crop evapotranspiration hair amount, the soil water
Divide variable quantity, the increment of groundwater and deep percolation isoequilibrium key element, required irrigation volume can be calculated, it is possible thereby to carry out reality
When Irrigation Forecast.In Field Water Balance it is most basic and it is most important be farmland root region soil soil moisture content data.Filled for region
Irrigate for forecast, also exist Soil Moisture Monitoring point set, Spatial Variability the problems such as need to solve.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide one kind can overcome remote sensing images inverting ground evapotranspiration and same
Change soil moisture content the defects of existing and difficult point real-time irrigation forecast system based on region Soil Moisture Monitoring and remotely-sensed data and
Method, according to the large area of remote-sensing inversion, quasi real time evapotranspiration data and real-time soil moisture content data can be realized to region the system
Real-time irrigation forecast.
To achieve the above object, the present invention takes following technical scheme：One kind is based on region Soil Moisture Monitoring and remotely-sensed data
Real-time irrigation forecast system, it is characterised in that：It includes remote sensing information soil moisture content inverting module, the real-time monitoring modular of region soil moisture content
With region real-time irrigation forecast module；The remote sensing information soil moisture content inverting module passes the region soil moisture content spatial coefficient of determination
Transport to the region real-time irrigation forecast module；The real-time monitoring modular of region soil moisture content passes the real-time Soil Moisture Monitoring result in region
Transport to the region real-time irrigation forecast module；The region real-time irrigation forecast module is chosen supervises with soil moisture content or soil moisture content
The corresponding picture dot of measuring point, picture dot and measured value are fitted, and obtain the coefficient to regional scale spread by point scale, and profit
The soil moisture content or soil moisture content data monitored in real time, simulated domain yardstick soil moisture content or soil moisture content real-time empty are combined with the coefficient
Between distribution map, complete the real-time prediction to regional irrigation situation.
The remote sensing information soil moisture content inverting module includes remote sensing information collection and processing module, Regional Soil Moisture Content inverting mould
Block and region soil moisture content spatial coefficient determination module；The remote sensing information collection is carried out with processing module to region soil moisture content data
Transmitted after collection and processing to the Regional Soil Moisture Content inverting module, the Regional Soil Moisture Content inverting module that water consumption is empty
Between the analog result that is distributed transmit to the region soil moisture content spatial coefficient determination module, the region soil moisture content spatial system
Number determining module is determined to region soil moisture content spatial coefficient.
The real-time monitoring modular of region soil moisture content includes power supply unit, microprocessor, multidiameter option switch, soil moisture letter
Breath collecting unit, AD conversion unit, data storage cell and the data biography being made up of wireless communication module and GPRS module
Defeated unit；Said supply unit is to the microprocessor, multidiameter option switch, soil moisture information collecting unit, analog-to-digital conversion
Unit, data storage cell and data transmission unit provide operating voltage；The microprocessor is opened by the multi-path choice
Close the simulation of the soil moisture for controlling the soil moisture information collecting unit collection soil profile different depth, temperature or the flow of water
Signal, and by the analog signal transmission collected to the AD conversion unit；The mould that the AD conversion unit will receive
Intend signal to be converted into transmitting after data signal to the microprocessor, the microprocessor is at the data signal that receives
Transmit to the data storage cell and stored after reason；The microprocessor passes through the wireless communication module and local computing
Machine carries out information exchange, by the GPRS module by the data transfer that the data storage cell stores to server.
Said supply unit includes battery pack and DC/DC boost modules；The microprocessor is by controlling the DC/DC liters
Die block is by the work required for the voltage increase of the battery pack to the soil moisture information collecting unit and GPRS module
Voltage.
The battery pack is using two section 1.5V dry cells or a section 3.6V lithium ion batteries.
The soil moisture information collecting unit includes soil moisture sensor, soil temperature sensor and soil water potential and passed
Sensor；The microprocessor is by controlling the multidiameter option switch to make the soil moisture sensor, soil temperature sensor
Or soil water potential sensor is connected with the AD conversion unit.
The data storage cell uses SIM card or FLASH memory.
The wireless communication module includes 433MHz radio circuits and 433MHz antennas；The region soil moisture content monitors mould in real time
Block is communicated by the wireless communication module with local computer；The microprocessor controls the 433MHz radio circuits
Every the beacon that 5 seconds send a sub-band address, beacon is sent to local computer by the 433MHz antennas；Micro- place
Reason device performs corresponding operating after the control signal that local computer sends is received by the wireless communication module.
A tilt switch and a GPS module are set in the real-time monitoring modular of region soil moisture content；The tilt switch and
GPS module is connected with the microprocessor respectively, and the microprocessor monitors the angle of inclination of the tilt switch in real time, and right
The positional information for the real-time monitoring modular of region soil moisture content that the GPS module detects is acquired, the position letter collected
Breath is transmitted to user mobile phone terminal by the GPRS module.
A kind of real-time irrigation of real-time irrigation forecast system based on region Soil Moisture Monitoring and remotely-sensed data described in use is pre-
Reporting method, it comprises the following steps：1) remote sensing information soil moisture content inverting module is according to the quasi real time remote sensing information inverting area collected
Region soil soil moisture content, the region soil moisture content spatial coefficient of determination is transmitted to region real-time irrigation forecast module, it is specifically included：
1. remote sensing information collection is acquired and handled to region soil moisture content data with processing module, the region soil moisture content data transfer after processing
To Regional Soil Moisture Content inverting module；2. according to the remote sensing region soil moisture content data received, Regional Soil Moisture Content inverting module is built
Vertical remote sensing water consumption model, it will be late by the quasi real time remotely-sensed data input remote sensing water consumption model of some days, to the space of water consumption
Distribution is simulated, and analog result is transmitted to region soil moisture content spatial coefficient determination module；3. according to analog result, area
Domain soil moisture content spatial coefficient determination module is determined to region soil moisture content spatial coefficient, it is determined that after region soil moisture content space
Spreading coefficient is transmitted to region real-time irrigation forecast module；2) soil moisture content real-time monitoring modular in region is supervised in real time to region soil moisture content
Survey, and the real-time Soil Moisture Monitoring result in region is transmitted to region real-time irrigation forecast module, it is specifically included：1. power supply unit is given
Microprocessor provides operating voltage, and local computer is controlled by wireless communication module to microprocessor；In microprocessor
Clock module is set, clock module produces interval time of measurement and GPRS data sends two timing clock signals of interval time,
And it is transmitted separately to soil moisture information collecting unit and GPRS module；2. according to the interval time of measurement timer clock received
Signal, soil moisture information collecting unit enter to the analog signal of the soil moisture of soil profile different depth, temperature or the flow of water
Row collection and storage；After starting interval time of measurement timing clock signal, microprocessor controls DC/DC boost modules by battery pack
The operating voltage of the voltage increase of output each sensor into soil moisture information collecting unit, microprocessor is by controlling multichannel
Selecting switch respectively transmits the signal that each sensor collects the mould that will be received to AD conversion unit, AD conversion unit
Intend signal to be converted into transmitting to microprocessor, microprocessor after data signal transmitting after handling the data signal received
Stored into data storage cell；After the completion of Data acquisition and storage, DC/DC boost modules are closed in microprocessor control,
Soil moisture content real-time monitoring modular in region enters resting state；3. interval time timer clock letter is sent according to the GPRS data received
Number, microprocessor transmits the data stored in the data store to server by GPRS module；Start GPRS data
After sending interval time timing clock signal, microprocessor control DC/DC boost modules arrive the voltage increase that battery pack exports
The operating voltage of GPRS module, microprocessor control GPRS module are connected to server, microprocessor control data memory cell
The data that preceding once transmission terminates to store during this transmission are transmitted to server by GPRS module；Data transfer is completed
Afterwards, DC/DC boost modules are closed in microprocessor control, and soil moisture content real-time monitoring modular in region enters resting state；4. microprocessor
The angle of inclination of monitoring tilt switch in real time, after monitoring that tilt switch is in non-standard state predetermined angle, microprocessor
The positional information for the real-time monitoring modular of region soil moisture content that device detects to GPS module is acquired, and the position collected is believed
Breath is transmitted to user mobile phone terminal by GPRS module；3) it is real according to the region soil moisture content spatial coefficient and region that receive
When Soil Moisture Monitoring result, region real-time irrigation forecast module chooses the picture dot corresponding with soil moisture content or Soil Moisture Monitoring point,
Picture dot and measured value are fitted, obtain the coefficient to regional scale spread by point scale, and combine in real time using the coefficient
The soil moisture content or soil moisture content data of monitoring, simulated domain yardstick soil moisture content or the real-time spatial distribution map of soil moisture content, so as to right
The irrigation situation in region carries out real-time prediction.
For the present invention due to taking above technical scheme, it has advantages below：1st, the present invention is due to setting remote sensing information moisture in the soil
Feelings inverting module, the real-time monitoring modular of region soil moisture content and region real-time irrigation forecast module, remote sensing information soil moisture content inverting module will
The region soil moisture content spatial coefficient of determination is transmitted to region real-time irrigation forecast module；Soil moisture content real-time monitoring modular in region is by area
The real-time Soil Moisture Monitoring result in domain is transmitted to region real-time irrigation forecast module；Region real-time irrigation forecast module is chosen to be contained with soil
Water or the corresponding picture dot of Soil Moisture Monitoring point, picture dot and measured value are fitted, obtained by point scale to regional scale exhibition
The coefficient of cloth, and the soil moisture content or soil moisture content data monitored in real time, simulated domain yardstick soil water-containing are combined using the coefficient
Amount or the real-time spatial distribution map of soil moisture content, therefore the present invention can overcome remote sensing images inverting ground evapotranspiration and assimilation soil water-containing
The defects of amount is present and difficult point, according to the large area of remote-sensing inversion, quasi real time evapotranspiration data and real-time soil moisture content data are realized to area
The real-time irrigation forecast in domain.2nd, the present invention is due to using microprocessor by controlling DC/DC boost modules by the voltage of battery pack
Lift soil moisture information collecting unit and GPRS (General Packet Radio Service, general grouped wireless clothes
Business technology) operating voltage required for module, therefore the present invention can be each unit in the real-time monitoring modular of region soil moisture content on demand
Power supply, so as at utmost reduce the power consumption of the present invention, reach green, the effect of environmental protection.3rd, the present invention is due to using two sections
1.5V dry cells or a section 3.6V lithium ion battery power supplies, therefore the present invention can reduce the volume of power supply unit, be easy in field
Between lay, and do not influence farming operation.It is 4th, of the invention due to carrying out information exchange by wireless communication module and local computer,
By GPRS module by the data transfer that data storage cell stores to server, therefore the present invention is easy to enter row information with user
Interaction, it is simple, convenient.Based on above advantage, the present invention can be widely applied to Irrigation Project Design decision-making and be given birth to management, region
The fields such as state monitors and Regional Drought monitors.
Brief description of the drawings
Fig. 1 is the structural representation of the real-time irrigation forecast system based on region Soil Moisture Monitoring and remotely-sensed data
Fig. 2 is the overall structure diagram of the real-time monitoring modular of region soil moisture content
Fig. 3 is the flow chart of the real-time irrigation forecast method based on region Soil Moisture Monitoring and remotely-sensed data
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
As shown in figure 1, the real-time irrigation forecast system of the invention based on region Soil Moisture Monitoring and remotely-sensed data includes remote sensing
Information soil moisture content inverting module 1, the real-time monitoring modular 2 of region soil moisture content and region real-time irrigation forecast module 3.Remote sensing information soil moisture content is anti-
Module 1 is drilled according to the quasi real time remote sensing information inverting Regional Soil Moisture Content collected, by the region soil moisture content spatial system of determination
Number is transmitted to region real-time irrigation forecast module 3；Soil moisture content real-time monitoring modular 2 in region is monitored in real time to region soil moisture content, and
The real-time Soil Moisture Monitoring result in region is transmitted to region real-time irrigation forecast module 3；According to the region soil moisture content space exhibition received
The real-time Soil Moisture Monitoring result of cloth coefficient and region, region real-time irrigation forecast module 3 is chosen supervises with soil moisture content or soil moisture content
The corresponding picture dot of measuring point, picture dot and measured value are fitted, and obtain the coefficient to regional scale spread by point scale, and profit
The soil moisture content or soil moisture content data monitored in real time, simulated domain yardstick soil moisture content or soil moisture content real-time empty are combined with the coefficient
Between distribution map, so as to region irrigation situation carry out real-time prediction.
In above-described embodiment, gathered as shown in figure 1, remote sensing information soil moisture content inverting module 1 includes remote sensing information with handling mould
Block 11, Regional Soil Moisture Content inverting module 12 and region soil moisture content spatial coefficient determination module 13.Remote sensing information gathers and place
Reason module 11 is transmitted to Regional Soil Moisture Content inverting module 12, regional soil moisture in the soil after region soil moisture content data are acquired and handled
Feelings inverting module 12 establishes remote sensing evapotranspiration model according to the remote sensing region soil moisture content data received, and it is real to will be late by the standard of some days
When remotely-sensed data input remote sensing evapotranspiration model in the spatial distribution of water consumption is simulated, and analog result is transmitted to area
Domain soil moisture content spatial coefficient determination module 13；According to analog result, region soil moisture content spatial coefficient determination module 13 is to area
Domain soil moisture content spatial coefficient is determined.
In above-described embodiment, as shown in Fig. 2 soil moisture content real-time monitoring modular 2 in region includes power supply unit 21, microprocessor
22nd, multidiameter option switch 23, soil moisture information collecting unit 24, AD conversion unit 25, data storage cell 26 and by
The data transmission unit 27 that wireless communication module 271 and GPRS module 272 are formed.Wherein, power supply unit 21 to microprocessor 22,
Multidiameter option switch 23, soil moisture information collecting unit 24, AD conversion unit 25, data storage cell 26 and data pass
Defeated unit 27 provides operating voltage；Microprocessor 22 makes soil moisture information collecting unit by controlling multidiameter option switch 23
The analog signal of the soil moisture of 24 pairs of soil profile different depths, temperature or the flow of water is acquired, and the simulation that will be collected
Signal is transmitted to AD conversion unit 25, AD conversion unit 25 and transmitted after the analog signal received is converted into data signal
To microprocessor 22, microprocessor 22, which is transmitted after handling the data signal received to data storage cell 26, to be deposited
Storage；Microprocessor 22 carries out information exchange by wireless communication module 271 and local computer (not shown), passes through GPRS
Module 272 is by the data transfer that data storage cell 26 stores to server (not shown).
In above-described embodiment, as shown in Fig. 2 power supply unit 21 includes battery pack 211 and DC/DC boost modules 212.Micro- place
Device 22 is managed by controlling DC/DC boost modules 212 by the voltage increase of battery pack 211 to the He of soil moisture information collecting unit 24
Operating voltage required for GPRS module 272.
In above-described embodiment, battery pack 211 is using two section 1.5V dry cells or a section 3.6V lithium ion batteries.
In above-described embodiment, as shown in Fig. 2 soil moisture information collecting unit 24 includes soil moisture sensor 241, soil
Earth temperature sensor 242 and soil water potential sensor 243.Microprocessor 22 is by controlling multidiameter option switch 213 to make the soil water
Sub-sensor 241, soil temperature sensor 242 or soil water potential sensor 243 are connected with AD conversion unit 25.
In above-described embodiment, data storage cell 26 uses SIM card or FLASH memory.
In above-described embodiment, wireless communication module 271 includes 433MHz radio circuits and 433MHz antennas.Region soil moisture content is real
When monitoring modular 2 communicated by wireless communication module 271 with local computer (not shown).In order to reduce power consumption,
Microprocessor 22 controls 433MHz radio circuits to pass through 433MHz antennas every 5 seconds beacons for sending a sub-band address, beacon
After being sent to local computer, microprocessor 22 enters the reception wait state of low-power consumption.When microprocessor 22 passes through channel radio
After letter module 271 receives the control signal that local computer is sent, microprocessor 22 performs corresponding operating.
In above-described embodiment, as shown in Fig. 2 also setting up the He of a tilt switch 28 in the real-time monitoring modular 2 of region soil moisture content
One GPS (Global Positioning System, global positioning system) module 29.Tilt switch 28 and GPS module 29 are distinguished
It is connected with microprocessor 22, microprocessor 22 monitors the angle of inclination of tilt switch 28 in real time, when monitoring at tilt switch 28
After non-standard state certain angle, the position for the real-time monitoring modular 2 of region soil moisture content that microprocessor 22 detects to GPS module 29
Confidence breath is acquired, and the positional information collected is transmitted to user mobile phone terminal by GPRS module 272 and (not shown in figure
Go out), for reminding the position of the real-time monitoring modular 2 of user area soil moisture content to change, in order to user's timely processing.
As shown in figure 3, carried out using the present invention based on the real-time irrigation forecast system of region Soil Moisture Monitoring and remotely-sensed data
The method of real-time irrigation forecast, it comprises the following steps：
1) remote sensing information soil moisture content inverting module 1 is according to the remote sensing information inverting Regional Soil Moisture Content collected, by determination
Region soil moisture content spatial coefficient is transmitted to region real-time irrigation forecast module 3, and it is specifically included：
1. remote sensing information collection is acquired and handled to region soil moisture content data with processing module 11, the region moisture in the soil after processing
Feelings data transfer is to Regional Soil Moisture Content inverting module 12.
2. according to the remote sensing region soil moisture content data received, Regional Soil Moisture Content inverting module 12 establishes remote sensing evapotranspiration mould
Type, it will be late by the quasi real time remotely-sensed data input remote sensing evapotranspiration model of some days, mould carried out to the spatial distribution of water consumption
Intend, and analog result is transmitted to region soil moisture content spatial coefficient determination module 13.
3. according to analog result, region soil moisture content spatial coefficient determination module 13 is entered to region soil moisture content spatial coefficient
Row determine, it is determined that after region soil moisture content spatial coefficient transmit to region real-time irrigation forecast module 3.
2) soil moisture content real-time monitoring modular 2 in region is monitored in real time to region soil moisture content, and by the real-time Soil Moisture Monitoring knot in region
Fruit is transmitted to region real-time irrigation forecast module 3, and it is specifically included：
1. power supply unit 21 provides operating voltage to microprocessor 22, local computer is right by wireless communication module 271
Microprocessor 22 is controlled.Clock module is set in microprocessor 22, and clock module produces interval time of measurement and GPRS numbers
According to transmission two timing clock signals of interval time, and it is transmitted separately to soil moisture information collecting unit 24 and GPRS module
272。
2. according to the interval time of measurement timing clock signal received, soil moisture information collecting unit 24 cuts open to soil
The analog signal of the soil moisture of face different depth, temperature or the flow of water is acquired and stored；
After starting interval time of measurement timing clock signal, microprocessor 22 controls DC/DC boost modules 212 by battery pack
The operating voltage of voltage increase each sensor into soil moisture information collecting unit 24 of 211 outputs, microprocessor 22 pass through
Control multidiameter option switch 23 respectively transmits the signal that each sensor collects to AD conversion unit 25, AD conversion unit
25 are converted into the analog signal received transmit to microprocessor 22 after data signal, and microprocessor 22 is to the numeral that receives
Signal is transmitted into data storage cell 26 after being handled and stored.After the completion of Data acquisition and storage, microprocessor 22
DC/DC boost modules 212 are closed in control, and soil moisture content real-time monitoring modular 2 in region enters resting state.
3. sending interval time timing clock signal according to the GPRS data received, microprocessor 22 will be stored in data
Data in memory cell 26 are transmitted to server by GPRS module 272；
After starting GPRS data transmission interval time timing clock signal, microprocessor 22 controls DC/DC boost modules 212
Operating voltage by the voltage increase that battery pack 211 exports to GPRS module 272, microprocessor 22 control GPRS module 272 to connect
Server is connected to, the control data memory cell 26 of microprocessor 22 once sends end to the number stored during this transmission by preceding
Transmitted according to by GPRS module 272 to server.After the completion of data transfer, DC/DC boost modules are closed in the control of microprocessor 22
212, soil moisture content real-time monitoring modular 2 in region enters resting state.
4. microprocessor 22 monitors the angle of inclination of tilt switch 28 in real time, when monitor tilt switch 28 be in it is non-horizontal
After state predetermined angle, the positional information for the real-time monitoring modular 2 of region soil moisture content that microprocessor 22 detects to GPS module 29
It is acquired, and the positional information collected is transmitted to user mobile phone terminal by GPRS module 272, for reminds user area
The position of the real-time monitoring modular 2 of domain soil moisture content has changed, in order to user's timely processing.
3) according to the real-time Soil Moisture Monitoring result of region soil moisture content spatial coefficient and region received, region fills in real time
Irrigate forecast module 3 and choose the picture dot corresponding with soil moisture content or Soil Moisture Monitoring point, picture dot and measured value are fitted, obtained
The coefficient by point scale to regional scale spread is obtained, and the soil moisture content monitored in real time or soil moisture content number are combined using the coefficient
According to simulated domain yardstick soil moisture content or the real-time spatial distribution map of soil moisture content, so as to which the irrigation situation progress to region is pre- in real time
Report.
The various embodiments described above are merely to illustrate the present invention, wherein the structure of each part, connected mode and method and step etc. are all
It can be varied from, every equivalents carried out on the basis of technical solution of the present invention and improvement, should not exclude
Outside protection scope of the present invention.
Claims (1)
1. a kind of real-time irrigation forecast method using the real-time irrigation forecast system based on region Soil Moisture Monitoring and remotely-sensed data,
It is characterized in that：The system fills in real time including remote sensing information soil moisture content inverting module, the real-time monitoring modular of region soil moisture content and region
Irrigate forecast module；The remote sensing information soil moisture content inverting module transmits the region soil moisture content spatial coefficient of determination to the region
Real-time irrigation forecast module；The real-time monitoring modular of region soil moisture content transmits the real-time Soil Moisture Monitoring result in region to the region
Real-time irrigation forecast module；The region real-time irrigation forecast module is chosen corresponding with soil moisture content or Soil Moisture Monitoring point
Picture dot, picture dot and measured value are fitted, obtain the coefficient to regional scale spread by point scale, and combine using the coefficient
The soil moisture content or soil moisture content data monitored in real time, simulated domain yardstick soil moisture content or the real-time spatial distribution map of soil moisture content, it is complete
The real-time prediction of paired regional irrigation situation；
The real-time monitoring modular of region soil moisture content includes power supply unit, microprocessor, multidiameter option switch, soil moisture information and adopted
Collect unit, AD conversion unit, data storage cell and the data transfer list being made up of wireless communication module and GPRS module
Member；Said supply unit to the microprocessor, multidiameter option switch, soil moisture information collecting unit, AD conversion unit,
Data storage cell and data transmission unit provide operating voltage；The microprocessor is controlled by the multidiameter option switch
The analog signal of the soil moisture of soil moisture information collecting unit collection soil profile different depth, temperature or the flow of water,
And by the analog signal transmission collected to the AD conversion unit；The analog signal that the AD conversion unit will receive
It is converted into transmitting to the microprocessor, the microprocessor after data signal passing after handling the data signal received
The data storage cell is transported to be stored；The microprocessor is carried out by the wireless communication module and local computer
Information exchange, by the GPRS module by the data transfer that the data storage cell stores to server；
The remote sensing information soil moisture content inverting module include remote sensing information collection with processing module, Regional Soil Moisture Content inverting module and
Region soil moisture content spatial coefficient determination module；The remote sensing information collection is acquired with processing module to region soil moisture content data
Water consumption quantity space is divided with being transmitted after processing to the Regional Soil Moisture Content inverting module, the Regional Soil Moisture Content inverting module
The analog result of cloth is transmitted true to the region soil moisture content spatial coefficient determination module, the region soil moisture content spatial coefficient
Cover half block is determined to region soil moisture content spatial coefficient；
Said supply unit includes battery pack and DC/DC boost modules；The microprocessor is by controlling the DC/DC boostings mould
Block is by the operating voltage required for the voltage increase of the battery pack to the soil moisture information collecting unit and GPRS module；
The battery pack is using two section 1.5V dry cells or a section 3.6V lithium ion batteries；
The soil moisture information collecting unit includes soil moisture sensor, soil temperature sensor and soil water potential sensing
Device；The microprocessor by control the multidiameter option switch make the soil moisture sensor, soil temperature sensor or
Soil water potential sensor is connected with the AD conversion unit；
The data storage cell uses SIM card or FLASH memory；
The wireless communication module includes 433MHz radio circuits and 433MHz antennas；The real-time monitoring modular of region soil moisture content leads to
The wireless communication module is crossed to be communicated with local computer；The microprocessor control the 433MHz radio circuits every
5 seconds beacons for sending a sub-band address, beacon are sent to local computer by the 433MHz antennas；The microprocessor
Corresponding operating is performed after receiving the control signal that local computer sends by the wireless communication module；
A tilt switch and a GPS module are set in the real-time monitoring modular of region soil moisture content；Tilt switch and the GPS mould
Block is connected with the microprocessor respectively, and the microprocessor monitors the angle of inclination of the tilt switch in real time, and to described
The positional information for the real-time monitoring modular of region soil moisture content that GPS module detects is acquired, and the positional information collected is led to
The GPRS module is crossed to transmit to user mobile phone terminal；
It the described method comprises the following steps：
1) remote sensing information soil moisture content inverting module is according to the quasi real time remote sensing information inverting Regional Soil Moisture Content collected, by determination
Region soil moisture content spatial coefficient is transmitted to region real-time irrigation forecast module, and it is specifically included：
1. remote sensing information collection is acquired and handled to region soil moisture content data with processing module, the region soil moisture content data after processing
Transmit to Regional Soil Moisture Content inverting module；
2. according to the remote sensing region soil moisture content data received, Regional Soil Moisture Content inverting module establishes remote sensing water consumption model, will be stagnant
Afterwards in the quasi real time remotely-sensed data input remote sensing water consumption model of some days, the spatial distribution of water consumption is simulated, and by mould
Intend result to transmit to region soil moisture content spatial coefficient determination module；
3. according to analog result, region soil moisture content spatial coefficient determination module carries out true to region soil moisture content spatial coefficient
It is fixed, it is determined that after region soil moisture content spatial coefficient transmit to region real-time irrigation forecast module；
2) soil moisture content real-time monitoring modular in region is monitored in real time to region soil moisture content, and the real-time Soil Moisture Monitoring result in region is transmitted
To region real-time irrigation forecast module, it is specifically included：
1. power supply unit provides operating voltage to microprocessor, local computer is carried out by wireless communication module to microprocessor
Control；Clock module is set in microprocessor, and clock module produces interval time of measurement and GPRS data sends interval time two
Individual timing clock signal, and it is transmitted separately to soil moisture information collecting unit and GPRS module；
It is 2. different to soil profile according to the interval time of measurement timing clock signal received, soil moisture information collecting unit
The analog signal of the soil moisture of depth, temperature or the flow of water is acquired and stored；
After starting interval time of measurement timing clock signal, microprocessor controls the electricity that DC/DC boost modules export battery pack
The operating voltage of pressure lifting each sensor into soil moisture information collecting unit, microprocessor is by controlling multidiameter option switch
The signal that each sensor collects is transmitted to AD conversion unit, AD conversion unit respectively and turns the analog signal received
Transmitted after changing data signal into microprocessor, microprocessor is transmitted to data after handling the data signal received to be deposited
Stored in storage unit；After the completion of Data acquisition and storage, DC/DC boost modules, region soil moisture content are closed in microprocessor control
Real-time monitoring modular enters resting state；
3. sending interval time timing clock signal according to the GPRS data received, microprocessor will be stored in data storage list
Data in member are transmitted to server by GPRS module；
After starting GPRS data transmission interval time timing clock signal, microprocessor controls DC/DC boost modules by battery pack
The voltage increase of output to GPRS module operating voltage, microprocessor control GPRS module be connected to server, microprocessor
Control data memory cell transmits the data that preceding once transmission terminates to store during this transmission to clothes by GPRS module
Business device；After the completion of data transfer, DC/DC boost modules are closed in microprocessor control, and soil moisture content real-time monitoring modular in region, which enters, stops
Dormancy state；
4. microprocessor monitors the angle of inclination of tilt switch in real time, when monitoring that it is default that tilt switch is in non-standard state
After angle, the positional information for the real-time monitoring modular of region soil moisture content that microprocessor detects to GPS module is acquired, and will be adopted
The positional information collected is transmitted to user mobile phone terminal by GPRS module；
3) irrigate in real time pre- according to the real-time Soil Moisture Monitoring result of region soil moisture content spatial coefficient and region received, region
Report module to choose the picture dot corresponding with soil moisture content or Soil Moisture Monitoring point, picture dot and measured value be fitted, obtain by
Point scale and combines the soil moisture content or soil moisture content data that monitor in real time, mould to the coefficient of regional scale spread using the coefficient
Intend regional scale soil moisture content or the real-time spatial distribution map of soil moisture content, so as to which the irrigation situation to region carries out real-time prediction.
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