CN107589240A - A kind of agricultural land soil soil moisture content remote monitoring terminal - Google Patents
A kind of agricultural land soil soil moisture content remote monitoring terminal Download PDFInfo
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- CN107589240A CN107589240A CN201711000783.3A CN201711000783A CN107589240A CN 107589240 A CN107589240 A CN 107589240A CN 201711000783 A CN201711000783 A CN 201711000783A CN 107589240 A CN107589240 A CN 107589240A
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- soil
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- moisture content
- monitoring terminal
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Abstract
The invention provides a kind of agricultural land soil soil moisture content remote monitoring terminal, including data acquisition unit, MCU microprocessors, GPS module, wireless communication unit and power supply unit, the data acquisition unit includes soil temperature-moisture sensor and signal conditioning circuit, and said supply unit includes solar panel, rectification reduction voltage circuit and battery.The present invention combines sensor technology, singlechip technology, GPS technology and wireless communication technology, unmanned automatic collection information on soil moisture in real time can be realized, also it can realize that information gathering transmission is completed in unmanned timing, do not influenceed by regional context environment, can arbitrarily it be arranged in big region, compact, can flexibly it move, it is easy for installation, GPS demarcates particular geographic location, and multipoint acquisition data are wirelessly transmitted to mobile terminal by GPRS, realize remote monitoring, the arrangement of big region communication cable is avoided, has saved cost.
Description
Technical field
The present invention relates to Internet of Things monitoring technology field, more particularly to a kind of agricultural land soil soil moisture content remote monitoring terminal.
Background technology
Soil moisture content is one of most important and the most frequently used soil information, and it is that soil moisture is full of in the crop growth phase
The formulation foundation of thanks to judgement, irrigation, Fertilization Decision and drainage measure etc..The agricultural land soil soil moisture content letter in big region is grasped simultaneously
Breath, helps to understand and grasp national water resource in the region well.Therefore accurately and rapidly to soil moisture content
It is significant to be monitored forecast.Traditional soil moisture content monitoring, be by successively being weighed using drying, neutron moisture content
The instrument and method such as meter, TDR time-domain reflectomers and ground-penetrating radar, test process is comparatively laborious, and can only be to specific small
The soil information in region manually gathers.And the collection to big Regional field information on soil moisture then involves a large amount of manpower and materials,
It is unfavorable for information data transmission.Soil moisture content monitoring is carried out using satellite remote sensing method, although can realize that the remote of information is adopted
Collection and transmission, but cost is higher, and the influence of the easy climate of measuring accuracy and orographic condition, real-time are poor.
The content of the invention
(1) technical problem solved
In order to solve the above problems, the invention provides a kind of agricultural land soil soil moisture content remote monitoring terminal, nobody can be realized
Change automatic collection information on soil moisture in real time, and remote monitoring can be carried out to information, using not limited by time and space.
(2) technical scheme
A kind of agricultural land soil soil moisture content remote monitoring terminal, including data acquisition unit, MCU microprocessors, GPS module, nothing
Line communication unit and power supply unit；
The data acquisition unit includes soil temperature-moisture sensor and signal conditioning circuit, the soil temperature and humidity sensing
During device is placed into the soil, each depth soil moisture informations of 0~100cm under earth's surface are gathered, and are converted to 0~5V analog voltages letter
Number；The signal conditioning circuit is filtered and buffered to the analog voltage signal, and with the ADC of the MCU microprocessors
Port connects；
The MCU microprocessors read the analog voltage signal by the ADC ports and changed, and pass through simultaneously
COM port or COM device or COM1 and COM2 mouths are communicatively coupled with the wireless communication unit and the GPS module respectively；
The GPS module is connected by the COM port or COM device or COM1 with the MCU microprocessors, and receives GPS positioning satellite transmission
Navigation message, for determining particular geographic location；
The wireless communication unit includes GPRS module and SIM card, and the GPRS module is through the COM2 mouths and the MCU
Microprocessor is connected, and the MCU microprocessors send the data to mobile terminal by the GPRS module；
Said supply unit provides operating voltage for other each modules.
Further, the soil temperature-moisture sensor selects JWSL-5VB protection type humiture transducers.
Further, the signal conditioning circuit includes the first amplifier, the second amplifier, rheostat, the first electric capacity, the second electricity
Appearance, first resistor and second resistance, wherein first and second amplifier selects LM358P operational amplifiers.
Further, the MCU microprocessors select low-power consumption 8-bit microprocessor ATmega128.
Further, the GPS module includes GPS sensor, triode, diode and the 3rd~the 8th resistance, wherein
The GPS sensor selects GPS-C3-470 built-in aerial GPS chips.
Further, the GPRS module includes GPRS radio communications module, phase inverter, light emitting diode and the 9th electricity
Resistance, wherein the GPRS radio communications module selects the embedded GPRS radio communications modules of MC35, the phase inverter selects NOT gate
74LS04。
Further, said supply unit includes solar panel, rectification reduction voltage circuit and battery.
(3) beneficial effect
The invention provides a kind of agricultural land soil soil moisture content remote monitoring terminal, with reference to sensor technology, singlechip technology,
GPS technology and wireless communication technology, unmanned automatic collection information on soil moisture in real time can be realized, can also realize unmanned timing
Information gathering transmission is completed, is not influenceed by regional context environment, can arbitrarily be arranged, compact, can flexibly move in big region
Dynamic, easy for installation, GPS demarcation particular geographic locations, multipoint acquisition data are wirelessly transmitted to mobile terminal by GPRS, real
Remote monitoring is showed, has avoided the arrangement of big region communication cable, saved cost, its system power dissipation is low, and measuring accuracy is high, property
Can be reliable and stable, there is good real-time, flexibility and scalability.
Brief description of the drawings
Fig. 1 is a kind of system architecture diagram of agricultural land soil soil moisture content remote monitoring terminal involved in the present invention.
Fig. 2 is a kind of data acquisition unit circuit theory of agricultural land soil soil moisture content remote monitoring terminal involved in the present invention
Figure.
Fig. 3 is a kind of GPS module circuit theory diagrams of agricultural land soil soil moisture content remote monitoring terminal involved in the present invention.
Fig. 4 is a kind of GPRS module circuit theory diagrams of agricultural land soil soil moisture content remote monitoring terminal involved in the present invention.
Embodiment
Embodiment involved in the present invention is described in further details below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of agricultural land soil soil moisture content remote monitoring terminal, including data acquisition unit, MCU microprocessors,
GPS module, wireless communication unit and power supply unit；Data acquisition unit includes soil temperature-moisture sensor and signal condition electricity
Road, during soil temperature-moisture sensor is placed into the soil, each depth soil moisture informations of 0~100cm under earth's surface are gathered, and convert
For 0~5V analog voltage signals；Signal conditioning circuit is filtered and buffered to analog voltage signal, and with MCU microprocessors
ADC ports connection；MCU microprocessors read analog voltage signal by the ADC ports and changed, while through COM1
Mouth and COM2 mouths are communicatively coupled with wireless communication unit and GPS module respectively；GPS module passes through COM port or COM device or COM1 and the micro- places of MCU
Device connection is managed, and receives the navigation message of GPS positioning satellite transmission, for determining particular geographic location；Wireless communication unit bag
GPRS module and SIM card are included, GPRS module is connected through COM2 mouths with MCU microprocessors, and MCU microprocessors will by GPRS module
Data are sent to mobile terminal；Power supply unit provides operating voltage for other each modules.
Soil temperature-moisture sensor U1 selects JWSL-5VB protection type humiture transducers, and its interface is 0~5V analog quantitys
Interface, output signal are d. c. voltage signal, and scope is 0~5V, and temperature exports with moisture signal from respective passage, mutually solely
It is vertical.During soil temperature-moisture sensor U1 places into the soil, each depth soil moisture informations of 0~100cm under earth's surface are gathered, and turn
0~5V analog voltage signals are changed to be exported.
In view of the requirement of cost and process performance, MCU microprocessors U4 low-power consumption 8-bit microprocessor ATmega128.
The chip hardware aboundresources, have the advantages that low in energy consumption, function is more, cheap and powerful.Atmega128 itself bands
There are 128K bytes Flash memories, program can be downloaded to directly in piece in Flash by programmable device, while again with 4K bytes
Eeprom memory, the data of soil temperature-moisture sensor U1 collections are directly deposited in EEPROM.Inside ATmega128
ADC has 8 passages, and the resolution ratio per passage is 10bit, and input voltage range is 0~5V, disclosure satisfy that monitoring terminal data
The needs of touring collection.
As shown in Fig. 2 the signal of soil temperature-moisture sensor U1 outputs is input to after linear transformation is handled
ATmega128 ADC ports, analog-to-digital conversion is carried out by the ADC inside ATmega128.Signal conditioning circuit include amplifier U2 and
U3, rheostat Rw1, electric capacity C1 and C2, resistance R1 and R2, wherein amplifier U2 and U3 select LM358P operational amplifiers.Soil temperature
The low pass filter that the voltage signal of humidity sensor U1 outputs first passes around electric capacity C1 and resistance R1 compositions carries out LPF.
The voltage signal of soil temperature-moisture sensor U1 outputs may have destabilizing factor in itself, can be by the shadow of other disturbing factors
To ring, many high-frequency noises are added in voltage signal, so before ADC port of the voltage signal into ATmega128, first
By low pass filter as much as possible noise and interference filtering.It is filtered, ends used here as single order RC low pass filters
Frequency is 15.92Hz, and can effectively decay medium-high frequency interference component, the change of reflected well voltage signal.Voltage is believed
After number by wave filter, then the voltage order one follower buffering that is formed via amplifier U2 and it is made up of resistance R2 and rheostat Rw1
Bleeder circuit be converted into 0~4.09V voltage signal after, then via amplifier U3 form voltage order one follower buffer, most
ATmega128 ADC ports are sent into afterwards, and wherein temperature signal send ADC1 mouths, and moisture signal send ADC2 mouths.
As shown in figure 3, GPS module includes GPS sensor U5, triode Q1, diode D1 and resistance R3~R8, wherein
GPS sensor U5 selects GPS-C3-470 built-in aerial GPS chips.GPS-C3-470 is connected by ATmega128 COM2 mouths,
Because its interface is Transistor-Transistor Logic level interface, serial line interface that can be directly with ATmega128 is attached.GPS module makes to be sent to
The data of mobile terminal carry geographical position subscript, the convenient collection point particular geographic location for determining monitoring terminal.
As shown in figure 4, GPRS module includes GPRS radio communication modules U6, phase inverter U7, LED 1 and electricity
R9 is hindered, wherein GPRS radio communications module U6 selects the embedded GPRS radio communications modules of MC35, and phase inverter U7 selects NOT gate
74LS04.Embedded GPRS radio communications module MC35 powers for direct current 5V, and its interface is also Transistor-Transistor Logic level interface, can directly be connected
It is connected on ATmega128 serial line interface COM1.Pin TXD and RXD are communication interface, and ONLINE is online instruction interface, when
The pin exports a low level signal after being connected to network, driving light-emitting diodes after being carried out reversely by 74LS04 NOT gates
Pipe LED1, just illustrate to have connected network after LED 1 is lighted.Soil temperature-moisture sensor U1 gathers soil moisture in the soil
Feelings data, after ATmega128 is handled, mobile terminal is sent to by GPRS network, realizes the long-range prison of mobile terminal user
Control, the soil water profit situation in agricultural land soil is grasped in time.
Power supply unit includes solar panel, rectification reduction voltage circuit and battery, and solar panel collects sunshine
Can, be converted to low-voltage DC through over commutation reduction voltage circuit and be stored in battery, powered to monitoring terminal.Due to monitoring terminal
It is placed in farmland, it is contemplated that the particularity of farmland geographical environment, use the form of solar panel combination battery as dress
Power supply is put, meets energy-conserving and environment-protective and the requirement of Ecological Sustainable Development, improves energy utilization rate, reduce cost.
The invention provides a kind of agricultural land soil soil moisture content remote monitoring terminal, with reference to sensor technology, singlechip technology,
GPS technology and wireless communication technology, unmanned automatic collection information on soil moisture in real time can be realized, can also realize unmanned timing
Information gathering transmission is completed, is not influenceed by regional context environment, can arbitrarily be arranged, compact, can flexibly move in big region
Dynamic, easy for installation, GPS demarcation particular geographic locations, multipoint acquisition data are wirelessly transmitted to mobile terminal by GPRS, real
Remote monitoring is showed, has avoided the arrangement of big region communication cable, saved cost, its system power dissipation is low, and measuring accuracy is high, property
Can be reliable and stable, there is good real-time, flexibility and scalability.
The above-described embodiments are merely illustrative of preferred embodiments of the present invention, not to the structure of the present invention
Think and scope is defined.On the premise of design concept of the present invention is not departed from, technology of the ordinary people in the field to the present invention
The all variations and modifications that scheme is made, all should drop into protection scope of the present invention, the claimed technology contents of the present invention,
All record in detail in the claims.
Claims (7)
- A kind of 1. agricultural land soil soil moisture content remote monitoring terminal, it is characterised in that：Including data acquisition unit, MCU microprocessors, GPS module, wireless communication unit and power supply unit；The data acquisition unit includes soil temperature-moisture sensor and signal conditioning circuit, and the soil temperature-moisture sensor buries Enter in soil, gather each depth soil moisture informations of 0~100cm under earth's surface, and be converted into 0~5V analog voltage signals； The signal conditioning circuit is filtered and buffered to the analog voltage signal, and with the ADC ports of the MCU microprocessors Connection；The MCU microprocessors read the analog voltage signal by the ADC ports and changed, while through COM port or COM device or COM1 It is communicatively coupled respectively with the wireless communication unit and the GPS module with COM2 mouths；The GPS module is connected by the COM port or COM device or COM1 with the MCU microprocessors, and receives leading for GPS positioning satellite transmission Avionics text, for determining particular geographic location；The wireless communication unit includes GPRS module and SIM card, and the GPRS module is through the COM2 mouths and the micro- places of the MCU Reason is connected, and the MCU microprocessors send the data to mobile terminal by the GPRS module；Said supply unit provides operating voltage for other each modules.
- A kind of 2. agricultural land soil soil moisture content remote monitoring terminal according to claim 1, it is characterised in that：The Soil Temperature And Moisture Degree sensor selects JWSL-5VB protection type humiture transducers.
- A kind of 3. agricultural land soil soil moisture content remote monitoring terminal according to claim 1, it is characterised in that：The signal condition Circuit includes the first amplifier, the second amplifier, rheostat, the first electric capacity, the second electric capacity, first resistor and second resistance, wherein institute State the first and second amplifiers and select LM358P operational amplifiers.
- A kind of 4. agricultural land soil soil moisture content remote monitoring terminal according to claim 1, it is characterised in that：The micro- places of MCU Reason device selects low-power consumption 8-bit microprocessor ATmega128.
- A kind of 5. agricultural land soil soil moisture content remote monitoring terminal according to claim 1, it is characterised in that：The GPS module Including GPS sensor, triode, diode and the 3rd~the 8th resistance, wherein the GPS sensor is from GPS-C3-470 Put antenna GPS chip.
- A kind of 6. agricultural land soil soil moisture content remote monitoring terminal according to claim 1, it is characterised in that：The GPRS module Including GPRS radio communications module, phase inverter, light emitting diode and the 9th resistance, wherein the GPRS radio communications module is selected The embedded GPRS radio communications modules of MC35, the phase inverter select NOT gate 74LS04.
- A kind of 7. agricultural land soil soil moisture content remote monitoring terminal according to claim 1, it is characterised in that：Said supply unit Including solar panel, rectification reduction voltage circuit and battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711000783.3A CN107589240A (en) | 2017-10-24 | 2017-10-24 | A kind of agricultural land soil soil moisture content remote monitoring terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711000783.3A CN107589240A (en) | 2017-10-24 | 2017-10-24 | A kind of agricultural land soil soil moisture content remote monitoring terminal |
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| Publication Number | Publication Date |
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| CN107589240A true CN107589240A (en) | 2018-01-16 |
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| CN201711000783.3A Withdrawn CN107589240A (en) | 2017-10-24 | 2017-10-24 | A kind of agricultural land soil soil moisture content remote monitoring terminal |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109151046A (en) * | 2018-09-10 | 2019-01-04 | 浙江工商大学 | A kind of smart home system based on Internet of Things |
| CN109737609A (en) * | 2019-01-03 | 2019-05-10 | 湘潭大学 | A kind of large size domestic gas water heating boiler air demand automatic regulating system |
| CN109946496A (en) * | 2019-02-20 | 2019-06-28 | 四川健坤科技有限公司 | A kind of telecommunications monitoring device |
| CN110763821A (en) * | 2019-09-20 | 2020-02-07 | 河南锐利特计算机科技有限公司 | Method and device for measuring water-holding capacity of field |
-
2017
- 2017-10-24 CN CN201711000783.3A patent/CN107589240A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109151046A (en) * | 2018-09-10 | 2019-01-04 | 浙江工商大学 | A kind of smart home system based on Internet of Things |
| CN109737609A (en) * | 2019-01-03 | 2019-05-10 | 湘潭大学 | A kind of large size domestic gas water heating boiler air demand automatic regulating system |
| CN109946496A (en) * | 2019-02-20 | 2019-06-28 | 四川健坤科技有限公司 | A kind of telecommunications monitoring device |
| CN110763821A (en) * | 2019-09-20 | 2020-02-07 | 河南锐利特计算机科技有限公司 | Method and device for measuring water-holding capacity of field |
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Application publication date: 20180116 |
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