CN103926886B - There is the agricultural environment information acquisition control device of evaporation sensor interface circuit - Google Patents
There is the agricultural environment information acquisition control device of evaporation sensor interface circuit Download PDFInfo
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- CN103926886B CN103926886B CN201410068386.XA CN201410068386A CN103926886B CN 103926886 B CN103926886 B CN 103926886B CN 201410068386 A CN201410068386 A CN 201410068386A CN 103926886 B CN103926886 B CN 103926886B
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Abstract
The present invention relates to a kind of agricultural environment information acquisition control device with evaporation sensor interface circuit, including the control circuit electrically connected, evaporation sensor interface circuit, GPS and GPRS communication interface circuit；Evaporation sensor interface circuit is connected with control circuit；GPS and GPRS communication interface circuit, pass through GPRS communication module, wireless connections Internet network, send data to remote server, Internet is connected by GPRS wireless network, realize remotely intelligently monitoring and Remote Data Analysis, which solves the real-time monitoring of agricultural site environment parameter, the problems such as long term monitoring, can pass through wireless connections Internet network, easy to use and flexible, the program uses distributed management to sensor node, various sensors can be optionally combined, and increases system flexibility.
Description
Technical field
The present invention relates to a kind of agricultural environment information acquisition control device, specifically, relate to one and there is evaporation capacity biography
The agricultural environment information acquisition control device of sensor interface circuit, belongs to agricultural technology field.
Background technology
Agricultural environment refers to the various natural of agro-ecology survival and development and through engineered natural cause
Totally, Agricultural Environmental Monitoring is exactly the ambient parameter utilizing the means such as physics, chemistry monitoring agricultural on-the-spot.Agricultural is raw for a long time
Produce and use extensive management, judge as substance environment with the experience of Producer, then take appropriate measures.Along with precisely
The development trend of agricultural, increasingly payes attention to the collection of environmental information, begins with the sensings such as the soil moisture, soil moisture, illumination
Device, but still be main for the most discrete acquisition mode, workload is big, it is impossible to real-time, and long-term judges agricultural environment.
Summary of the invention
The problem to be solved in the present invention is for problem above, it is provided that a kind of agriculture with evaporation sensor interface circuit
Industry environment information acquisition controls device.
For solving the problems referred to above, the technical solution adopted in the present invention is: one has evaporation sensor interface circuit
Agricultural environment information acquisition control device, it is characterised in that: described agricultural environment information acquisition control device include electrical connection
Control circuit, evaporation sensor interface circuit, GPS and GPRS communication interface circuit；
Described evaporation sensor interface circuit is connected with control circuit；
Described GPS and GPRS communication interface circuit, by GPRS communication module, wireless connections Internet network, by number
According to sending to remote server.
A kind of prioritization scheme, described control circuit includes microprocessor U1, shift register U16, the type of microprocessor U1
Number being STM32F107,94 feet of microprocessor U1 patch 8 feet of fitting J0, microprocessor U1 and the indirect brilliant of 9 feet through resistance R4
Shake X1,12 feet of microprocessor U1 and one end of 14 foot connecting resistance R1 of the indirect crystal oscillator X2, microprocessor U1 of 13 feet, electric capacity C5
One end, another termination power of resistance R1, the other end ground connection of electric capacity C5.
Further, 23 feet of described microprocessor U1 connect wake-up circuit, and wake-up circuit includes resistance R3, electric capacity C6 and opens
Close one end of 23 foot connecting resistance R3 of K1, microprocessor U1, one end of electric capacity C6 and one end of switch K1, the other end of resistance R3
Connect power supply, the other end ground connection of switch K1, the other end ground connection of electric capacity C6.
Further, 1 foot of described shift register U16 connects 63 feet of microprocessor U1,2 feet of shift register U16
Connecing 61 feet of microprocessor U1,9 feet of shift register U16 connect 62 feet of microprocessor U1.
Further, described evaporation sensor interface circuit includes operational amplifier U9, operational amplifier U10, resistance
R40, resistance R41, resistance R42, resistance R43, resistance R44, audion Q2 and plug connector J8, operational amplifier U9, operation amplifier
The model of device U10 is LM358, and plug connector J8 is used for connecting evaporation sensor, and evaporation sensor uses ZFL1 type vaporizer,
1 foot of plug connector J8 connects the signal end of evaporation sensor, and 2 feet of plug connector J8 connect the positive source of evaporation sensor, inserts
The 3 foot ground connection of fitting J8,4 feet of plug connector J8 connect the power cathode of evaporation sensor, and the base stage of audion Q2 is through resistance R40
Connecing 37 feet of microprocessor U1, the colelctor electrode of audion Q2 connects power supply, and the emitter stage of audion Q2 connects the electricity of operational amplifier U9
Source, 2 feet of plug connector J8, one end of 4 foot connecting resistance R41 of plug connector J8,3 feet of shift register U16, resistance R41's
Another termination power, 1 foot of plug connector J8 connects the in-phase input end of operational amplifier U9, the inverting input of operational amplifier U9
Connecing its outfan, the outfan of operational amplifier U9 connects the in-phase input end of operational amplifier U10 through resistance R42, and resistance R44 is even
Being connected between inverting input and the outfan of operational amplifier U10, the inverting input of operational amplifier U10 is through resistance R43
Ground connection, 36 feet of the output termination microprocessor U1 of operational amplifier U10.
Further, described GPS and GPRS communication interface circuit includes single channel current limliting panel switches U13, transceiver
U17, resistance R75 are to resistance R78, electric capacity C22, electric capacity C23, electric capacity C34 to electric capacity C37, plug connector J12 and plug connector J13, single
The model of passage current limliting panel switches U13 is TPS2041BDBV, and the model of transceiver U17 is MAX3232, and plug connector J12 is used for
Connecting GPRS communication module, GPRS communication module uses LT2302 embedded GPRS DTU module, and 1 foot of plug connector J12 connects
The ON/OFF end of GPRS communication module, 2 feet of plug connector J12 connect the positive source DC+ of GPRS communication module, the 3 of plug connector J12
Foot ground connection, 5 feet of Transistor-Transistor Logic level serial ports reception RX, plug connector J12 that 4 feet of plug connector J12 connect GPRS communication module meet GPRS and lead to
What the Transistor-Transistor Logic level serial ports of news module sent that 6 feet of TX, plug connector J12 connect GPRS module gets out signal LINK, plug connector J12
One end of 1 foot connecting resistance R75,76 feet of microprocessor U1,4 feet of plug connector J12 connect 78 feet of microprocessor U1, plug connector
5 feet of J12 connect 79 feet of microprocessor U1, and 6 feet of plug connector J12 connect 77 feet of microprocessor U1, one end of resistance R76, electricity
Another termination power of resistance R76.
Further, described plug connector J13 is used for connecting GPS communication module, uses global BR-355 GPS module, grafting
The 1 foot ground connection of part J13,3 feet of RS-232 serial ports transmission TX, plug connector J13 that 2 feet of plug connector J13 connect GPS communication module connect
The RS-232 serial ports of GPS communication module receives RX, and 4 feet of plug connector J13 meet the positive source of GPS communication module, plug connector J13
5 feet connect the power cathode of GPS communication module, 13 feet of 2 foot transceiver U17 of plug connector J13,3 feet of plug connector J13 connect
14 feet of transceiver U17,1 foot of 4 foot order passage current limliting panel switches U13 of plug connector J13, one end of electric capacity C22, electric capacity
One end of C23, the other end of electric capacity C22, the other end ground connection of electric capacity C23,4 feet of single channel current limliting panel switches U13 connect micro-
85 feet of processor U1, one end of resistance R77, another termination power of resistance R77,11 feet of transceiver U17 connect microprocessor
80 feet of U1,12 feet of transceiver U17 connect 83 feet of microprocessor U1；
Described shift register U16 is formed in line detection circuit, by eight parallel-by-bit inputs/serial output register
74LV165 forms, and microprocessor U1 inputs the presence of each sensor by shift register U16.
The present invention takes above technical scheme, has the advantage that for disadvantage mentioned above, and this device is with network technology and biography
Sensor technology is core, adapts to the requirement of modern agricultural development, it is achieved the Intellectualized monitoring of agricultural environment.This device to wired and
Wireless sensor node carries out distributed management, according to on-the-spot or remotely located acquisition agricultural site environment parameter, and passes through
GPRS wireless network or cable network connect Internet, it is achieved remotely intelligently monitoring and Remote Data Analysis.
Which solves the real-time monitoring of agricultural site environment parameter, the problem such as long term monitoring, can by wireless and
Wired connection Internet network, easy to use and flexible.Particularly there is wireless sensor node interface, not only make information gathering
Scope expands significantly, and arbitrarily increases ambient parameter kind by wave point.The program uses distribution to sensor node
Formula manages, and various sensors can be optionally combined, and increases system flexibility.Each sensor node power supply independently controls, Ke Yiyou
Effect reduces system power dissipation, meets field long-term work requirement.
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Accompanying drawing 1 is the circuit block diagram of control circuit in the embodiment of the present invention；
Accompanying drawing 2 is the circuit theory diagrams of sensor interface circuitry in the embodiment of the present invention；
Accompanying drawing 3 is baroceptor interface circuit in the embodiment of the present invention, soil temperature sensor interface circuit, Air Temperature
The circuit theory diagrams of humidity sensor interface circuit；
Accompanying drawing 4 is wind speed sensor interface circuitry in the embodiment of the present invention, optical sensor interface circuit, soil moisture biography
The circuit theory diagrams of sensor interface circuit；
Accompanying drawing 5 is the circuit theory diagrams of carbon dioxide sensor interface circuit in the embodiment of the present invention；
Accompanying drawing 6 is the circuit theory diagrams of evaporation sensor interface circuit in the embodiment of the present invention；
Accompanying drawing 7 is the circuit theory diagrams of rainfall amount sensor interface circuit in the embodiment of the present invention；
Accompanying drawing 8 is the circuit theory diagrams of wireless interface circuit in the embodiment of the present invention；
Accompanying drawing 9 is the circuit theory diagrams of network interface circuit in the embodiment of the present invention；
Accompanying drawing 10 is the circuit theory diagrams of power circuit in the embodiment of the present invention；
Accompanying drawing 11 is the circuit theory diagrams of GPS and GPRS communication interface circuit in the embodiment of the present invention；
Accompanying drawing 12 is the enlarged drawing of microprocessor U1 in accompanying drawing 2；
In figure,
1-control circuit, 2-sensor interface circuitry, 3-wireless interface circuit, 4-network interface circuit, 5-power circuit,
6-baroceptor interface circuit, 7-soil temperature sensor interface circuit, 8-aerial temperature and humidity sensor interface circuitry, 9-wind
Speed sensor interface circuitry, 10-optical sensor interface circuit, 11-soil humidity sensor interface circuit, 12-carbon dioxide
Sensor interface circuitry, 13-evaporation sensor interface circuit, 14-rainfall amount sensor interface circuit, 15-wireless transmission connects
Mouth circuit, 16-wireless receiving interface circuit, 17-power switch circuit, 18-mu balanced circuit, 19-charging circuit, 20-electricity refers to
Show circuit, 21-GPS and GPRS communication interface circuit.
Detailed description of the invention
Embodiment, as it is shown in figure 1, a kind of agricultural environment information acquisition control device, including electrical connection control circuit 1,
Sensor interface circuitry 2, wireless interface circuit 3, network interface circuit 4 and power circuit 5.
The effect of control circuit 1: include microprocessor U1, is the core of whole system, and microprocessor U1 uses
STM32F107 chip, STM32F107 be ST Microelectronics release a STM32 interconnected type series, kernel be ARM
32 high-performance microcontrollers of Cortex-M3.It is responsible for system call, data acquisition, the functions such as data process, network transmission.
The effect of sensor interface circuitry 2: be various sensor interfaces, including wired sensor nodes and wireless senser
Node.Each sensor has independent current source, or several sensor has an independent current source, and each independent current source is the most permissible
Independent switch, only when gathering certain sensor, just opens corresponding power supply, thus effectively reduces power consumption, extends battery and uses the longevity
Life.Each sensor interface is respectively provided with line detection signal, improves system flexibility.Sensor interface circuitry 2 includes electrical connection
Baroceptor interface circuit 6, soil temperature sensor interface circuit 7, aerial temperature and humidity sensor interface circuitry 8, wind speed
Sensor interface circuitry 9, optical sensor interface circuit 10, soil humidity sensor interface circuit 11, carbon dioxide sensor
Interface circuit 12, evaporation sensor interface circuit 13, rainfall amount sensor interface circuit 14.
Wireless interface circuit 3, including wireless transmission interface circuit 15 and wireless receiving interface circuit 16, wireless transmission interface
Circuit 15 connects 433MHz wireless transmitter module, for sending instruction to wireless sensor node；Wireless receiving interface circuit 16
Connect 315MHz wireless receiving module, for receiving the collection data of wireless sensor node.
The effect of network interface circuit 4: realize TCP/IP network interface, can be wired Internet network, increases
System reliability.
The effect of power circuit 5: be whole system electric power system, has accumulator and mains-supplied function, has soft opening
Shut-off function, it is ensured that zero-power under off-mode.Power circuit 5 includes power switch circuit 17, mu balanced circuit 18, charging circuit
19 and battery capacity indication circuit 20.
Baroceptor interface circuit 6, uses Switzerland INTERSEMA digital gas pressure sensor MS5540C, meets Europe
ROHS standard, has the features such as low-power consumption, low-voltage.
Soil temperature sensor interface circuit 7, connects the DS18B20 digital temperature sensor of DALLAS company of the U.S.,
Interface, with on-line checking function, increases system intelligence.
Aerial temperature and humidity sensor interface circuitry 8, connects SHT11 humidity and temperature sensor, and SHT11 is Switzerland
What Sensirion company produced has the accurate digital relative humidity of monolithic whole school and the temperature sensor of I2C EBI.This biography
Sensor uses unique CMOSens TM technology, has digital output, exempts from debugging, non-calibrating, exempt from peripheral circuit and entirely exchange
Feature.Interface, with on-line checking function, increases system intelligence.
Air velocity transducer interface circuit 9, is used for connecting EC-8SX integration wind speed wind direction sensor, increases system reliable
Property, there is level shifting circuit.Interface, with on-line checking function, increases system intelligence.
Optical sensor interface circuit 10, connects RY-G type intensity of illumination sensor, receives 4-20mA electric current loop signal.Connect
Mouth, with on-line checking function, increases system intelligence.
Soil humidity sensor interface circuit 11, connects TDR-3 type soil moisture sensor, receives voltage signal, has
Signal modulation function.Interface, with on-line checking function, increases system intelligence.
Carbon dioxide sensor interface circuit 12, connects the infrared C0 of CM1101 NDIR2Sensor, by serial ports and system
It is connected, uses independent current source, only turn on the power when detection, can effectively reduce power consumption.Interface, with on-line checking function, increases
System intelligence.
Evaporation sensor interface circuit 13, connects ZFL1 type vaporizer, receives voltage signal, has signal modulation merit
Energy.Use independent current source, only turn on the power when detection, can effectively reduce power consumption.Interface, with on-line checking function, increases system
Unite intelligent.
Rainfall amount sensor interface circuit 14, connect RY-YLH02 rainfall amount sensor, receive switching value, interface with
Line detection function, increases system intelligence.
Power switch circuit 17, supply power soft switch electromechanics road, off-mode under zero-power, and shutdown can be effectively ensured
Time system significant data do not lose.
Mu balanced circuit 18, uses switching regulator IC, improves conversion efficiency, reduces heating；Charging circuit 19, battery charges
And indicating circuit；Battery capacity indication circuit 20, by detection cell voltage, calculates battery capacity.There is detection cut-off circuit, can have
Effect reduces power consumption.
GPS and GPRS communication interface circuit 21, by GPRS communication module, wireless connections Internet network, by data
Send to remote server.
As shown in Fig. 2, Figure 12, control circuit 1 includes microprocessor U1, shift register U16, the model of microprocessor U1
94 feet for STM32F107, microprocessor U1 patch 8 feet and the indirect crystal oscillator of 9 feet of fitting J0, microprocessor U1 through resistance R4
12 feet of X1, microprocessor U1 and one end of 14 foot connecting resistance R1 of the indirect crystal oscillator X2, microprocessor U1 of 13 feet, electric capacity C5
One end, another termination power of resistance R1, the other end ground connection of electric capacity C5.
23 feet of microprocessor U1 connect wake-up circuit, and wake-up circuit includes resistance R3, electric capacity C6 and switch K1, microprocessor
One end of 23 foot connecting resistance R3 of U1, one end of electric capacity C6 and one end of switch K1, another termination power of resistance R3, switch K1
Other end ground connection, the other end ground connection of electric capacity C6.
The 14 of microprocessor U1,72,76,77,89,90 feet patch fitting J1, plug connector J1 be used for connect commissioning device with
Microprocessor U1 is debugged.
Shift register U16 is formed in line detection circuit, by eight parallel-by-bit input/serial output register 74LV165 groups
Becoming, 1 foot of shift register U16 connects 63 feet of microprocessor U1, and 2 feet of shift register U16 connect 61 feet of microprocessor U1,
9 feet of shift register U16 connect 62 feet of microprocessor U1, and microprocessor U1 inputs each sensor by shift register U16
Presence.
As it is shown on figure 3, baroceptor interface circuit 6 includes air pressure module sensors U3, resistance R14, resistance R15, electricity
Resistance R16, resistance R17, the model of air pressure module sensors U3 is MS5540C, 1 foot connecting resistance R14 of air pressure module sensors U3
One end, 15 feet of microprocessor U1, another termination power of resistance R14,8 foot connecting resistance R15 of air pressure module sensors U3
One end, 18 feet of microprocessor U1, another termination power of resistance R15,7 foot connecting resistance R16 of air pressure module sensors U3
One end, 17 feet of microprocessor U1, another termination power of resistance R16,6 foot connecting resistance R17 of air pressure module sensors U3
One end, 26 feet of microprocessor U1, another termination power of resistance R17,5 feet of air pressure module sensors U3 connect power supply.
Soil temperature sensor interface circuit 7 includes resistance R18, resistance R19 and plug connector J2, and plug connector J2 is used for connecting
Soil temperature sensor, the model of soil temperature sensor is DS18B20, and 1 foot of plug connector J2 connects the power cathode of sensor,
2 feet of plug connector J2 connect sensor signal, and 3 feet of plug connector J2 connect sensor positive pole, 4 feet of plug connector J2 and shift register
6 feet of U16 connect, and one end of resistance R18, a termination power of resistance R19, the other end of resistance R18 patches the 4 of fitting J2
Foot, 6 feet of shift register U16,3 feet of plug connector J2 connect power supply, and the other end of resistance R19 patches 2 feet of fitting J2, Wei Chu
2 feet of reason device U1, the 1 foot ground connection of plug connector J2.
Aerial temperature and humidity sensor interface circuitry 8 includes resistance R20, resistance R21, resistance R22 and plug connector J3, plug connector
J3 is used for connecting aerial temperature and humidity sensor, and the model of aerial temperature and humidity sensor is SHT11, and 1 foot of plug connector J3 connects air
The power cathode of Temperature Humidity Sensor, 2 feet of plug connector J3 connect the data signal of aerial temperature and humidity sensor, the 3 of plug connector J3
Foot connects the clock signal of aerial temperature and humidity sensor, and 4 feet of plug connector J3 connect the positive source of aerial temperature and humidity sensor, grafting
5 feet of part J3 connect the power cathode of aerial temperature and humidity sensor, one end of resistance R20, one end of resistance R21, the one of resistance R22
Termination power, the other end of resistance R20 patches 10 feet of 5 feet of fitting J3, shift register U16, and 4 feet of plug connector J3 connect electricity
Source, the other end of resistance R21 patches 4 feet of 3 feet of fitting J3, microprocessor U1, and the other end of resistance R22 patches fitting J3's
2 feet, 5 feet of microprocessor U1, the 1 foot ground connection of plug connector J3.
As shown in Figure 4, air velocity transducer interface circuit 9 include dual power supply conversion transceiver U5, resistance R24, resistance R25,
Electric capacity C11 and plug connector J4, the model of dual power supply conversion transceiver U5 is 74LVC4245, and plug connector J4 is used for connecting wind speed and wind
To sensor, wind speed wind direction sensor uses EC-8SX integration wind speed wind direction sensor, and 1 foot of plug connector J4 connects wind speed and direction
Wind direction signals D0 of sensor, 2 feet of plug connector J4 connect wind direction signals D1 of wind speed wind direction sensor, and 3 feet of plug connector J4 connect
Wind direction signals D2 of wind speed wind direction sensor, 4 feet of plug connector J4 meet wind direction signals D3 of wind speed wind direction sensor, plug connector J4
5 feet connect wind direction signals D4 of wind speed wind direction sensor, 6 feet of plug connector J4 connect wind direction signals D5 of wind speed wind direction sensor,
7 feet of plug connector J4 connect wind direction signals D6 of wind speed wind direction sensor, and 8 feet of plug connector J4 connect the power supply of wind speed wind direction sensor
Positive pole, 9 feet of plug connector J4 connect the power cathode of wind speed wind direction sensor, and 10 feet of plug connector J4 are empty, 11 feet of plug connector J4
Meeting the wind velocity signal CP of wind speed wind direction sensor, 11 feet of plug connector J4 connect the power cathode of wind speed wind direction sensor, double electricity
1 foot of source conversion transceiver U5,2 feet connect 8 feet of power supply and plug connector J4,3 feet of dual power supply conversion transceiver U5,4 feet, 5 feet,
6 feet, 7 feet, 8 feet, 9 feet and 1 foot of plug connector J4,2 feet, 3 feet, 4 feet, 5 feet, 6 feet, 7 foot one_to_one corresponding, dual power supply conversion transmitting-receiving
10 feet of device U5,11 feet of plug connector J4 connect one end of electric capacity C11, one end of resistance R25, the other end ground connection of electric capacity C11, electricity
Another termination power of resistance R25,9 feet of plug connector J4 connect power supply through resistance R24, and 14 feet of dual power supply conversion transceiver U5 connect micro-
40 feet of processor U1,14 feet of dual power supply conversion transceiver U5 connect 40 feet of microprocessor U1, dual power supply conversion transceiver U5
15 feet connect 46 feet of microprocessor U1,16 feet of dual power supply conversion transceiver U5 connect 45 feet of microprocessor U1, and dual power supply turns
17 feet changing transceiver U5 connect 44 feet of microprocessor U1, and 18 feet of dual power supply conversion transceiver U5 connect the 43 of microprocessor U1
Foot, 19 feet of dual power supply conversion transceiver U5 connect 41 feet of microprocessor U1, and 20 feet of dual power supply conversion transceiver U5 meet micro-place
39 feet of reason device U1,21 feet of dual power supply conversion transceiver U5 connect 38 feet of microprocessor U1.
Optical sensor interface circuit 10 include operational amplifier U6, resistance R26, resistance R27, resistance R28, resistance R29,
Resistance R30 and plug connector J5, the model of operational amplifier U6 is LM358, and plug connector J5 is used for connecting optical sensor, and illumination passes
Sensor uses RY-G type intensity of illumination sensor, and 4 feet of plug connector J5 connect the positive source of optical sensor, the 3 of plug connector J5
Foot connects the power cathode of optical sensor, and 2 feet of plug connector J5 connect the signal of optical sensor, and 1 foot of plug connector J5 connects illumination
The power cathode of sensor, the power supply termination power of operational amplifier U6,4 feet of plug connector J5, the homophase of operational amplifier U6
One end through resistance R28 connecting resistance R27 of input, 2 feet of plug connector J5, the other end ground connection of resistance R27, resistance R30 is arranged
Between the inverting input and outfan of operational amplifier U6, the inverting input of operational amplifier U6 through resistance R29 ground connection,
One end of 1 foot connecting resistance R26 of plug connector J5,12 feet of shift register U16, another termination power of resistance R26, computing is put
31 feet of the output termination microprocessor U1 of big device U6.
Soil humidity sensor interface circuit 11 includes operational amplifier U7, resistance R31, resistance R32, resistance R33, resistance
R34, resistance R35 and plug connector J6, the model of operational amplifier U7 is LM358, and plug connector J6 is used for connecting soil moisture sensing
Device, soil humidity sensor uses TDR-3 type soil moisture sensor, and 1 foot of plug connector J6 connects soil humidity sensor power supply
Negative pole, 2 feet of plug connector J6 connect soil humidity sensor signal, and 3 feet of plug connector J6 connect soil humidity sensor positive source,
4 feet of plug connector J6 connect soil humidity sensor power cathode, and the in-phase input end of operational amplifier U7 is through resistance R33 connecting resistance
One end of R32,2 feet of plug connector J6, the other end ground connection of resistance R32, resistance R35 is arranged on the anti-phase defeated of operational amplifier U7
Entering between end and outfan, the inverting input of operational amplifier U7 is through resistance R34 ground connection, the 4 foot connecting resistance R31 of plug connector J6
One end, 13 feet of shift register U16, another termination power of resistance R31, the output of operational amplifier U7 terminates micro-process
30 feet of device U1.
As it is shown in figure 5, carbon dioxide sensor interface circuit 12 includes single channel current limliting panel switches U8, electric capacity C12, electricity
Hold C13, resistance R36, resistance R37, resistance R38, resistance R39, audion Q1 and plug connector J7, single channel current limliting panel switches U8
Model be TPS2041BDBV, plug connector J7 is used for connecting carbon dioxide sensor, and carbon dioxide sensor uses CM1101
The infrared C0 of NDIR2Sensor, 1 foot of plug connector J7 meets C02The positive source of sensor, 2 feet of plug connector J7 meet C02Sensor
3 feet of signal RX, plug connector J7 meet C02The signal TX of sensor, 4 feet of plug connector J7 connect the positive source of sensor, insert
5 feet of fitting J7 meet C02The power cathode of sensor, one end of the 4 foot connecting resistance R36 of single channel current limliting panel switches U8, micro-
96 feet of processor U1, another termination power of resistance R36,1 foot of single channel current limliting panel switches U8 meets the one of electric capacity C12
End, one end of electric capacity C13,1 foot of plug connector J7, the other end of electric capacity C12, the other end ground connection of electric capacity C13, plug connector J7's
2 feet connect 92 feet of microprocessor U1, and 3 feet of plug connector J7 connect 93 feet of microprocessor U1, and 4 feet of plug connector J7 are through resistance R38
One end of connecting resistance R37, the base stage of audion Q1, the emitter stage of audion Q1, the other end ground connection of resistance R37, audion Q1
Colelctor electrode connect 4 feet of shift register U16, one end of resistance R39, the other end ground connection of resistance R39.
As shown in Figure 6, evaporation sensor interface circuit 13 includes operational amplifier U9, operational amplifier U10, resistance
R40, resistance R41, resistance R42, resistance R43, resistance R44, audion Q2 and plug connector J8, operational amplifier U9, operation amplifier
The model of device U10 is LM358, and plug connector J8 is used for connecting evaporation sensor, and evaporation sensor uses ZFL1 type vaporizer,
1 foot of plug connector J8 connects the signal end of evaporation sensor, and 2 feet of plug connector J8 connect the positive source of evaporation sensor, inserts
The 3 foot ground connection of fitting J8,4 feet of plug connector J8 connect the power cathode of evaporation sensor, and the base stage of audion Q2 is through resistance R40
Connecing 37 feet of microprocessor U1, the colelctor electrode of audion Q2 connects power supply, and the emitter stage of audion Q2 connects the electricity of operational amplifier U9
Source, 2 feet of plug connector J8, one end of 4 foot connecting resistance R41 of plug connector J8,3 feet of shift register U16, resistance R41's
Another termination power, 1 foot of plug connector J8 connects the in-phase input end of operational amplifier U9, the inverting input of operational amplifier U9
Connecing its outfan, the outfan of operational amplifier U9 connects the in-phase input end of operational amplifier U10 through resistance R42, and resistance R44 is even
Being connected between inverting input and the outfan of operational amplifier U10, the inverting input of operational amplifier U10 is through resistance R43
Ground connection, 36 feet of the output termination microprocessor U1 of operational amplifier U10.
As it is shown in fig. 7, rainfall amount sensor interface circuit 14 include electric capacity C14, resistance R45, resistance R46, resistance R47 and
Plug connector J9, plug connector J9 are used for connecting rainfall amount sensor, and rainfall amount sensor uses RY-YLH02 rainfall amount sensor, insert
1 foot of fitting J9 connects the power cathode of rainfall amount sensor, and 1 foot of plug connector J9 connects the positive source of rainfall amount sensor, inserts
3 feet of fitting J9 connect the power cathode of rainfall amount sensor, one end of 3 foot connecting resistance R45 of plug connector J9, shift register
14 feet of U16, another termination power of resistance R45, one end of 2 foot connecting resistance R46 of plug connector J9, one end of resistance R47, electricity
Holding one end of C14, another termination power of resistance R46, the other end ground connection of electric capacity C14, another of resistance R47 terminates micro-process
42 feet of device U1.
As shown in Figure 8, wireless interface circuit 3 includes single channel current limliting panel switches U11, resistance R48, electric capacity C14, electric capacity
C15, wireless transmission interface circuit 15 and wireless receiving interface circuit 16, the model of single channel current limliting panel switches U11 is
4 feet of TPS2041BDBV, single channel current limliting panel switches U11 meet 1 foot of microprocessor U1, single channel current limliting panel switches U11
1 foot i.e. export one end of termination capacitor C14, one end of electric capacity C15, the other end of electric capacity C14, another termination of electric capacity C15
Ground.
Wireless transmission interface circuit 15 includes resistance R49, resistance R50, audion Q3 and plug connector J10, and plug connector J10 uses
Connecting wireless transmitter module, use 433MHz wireless transmitter module, 1 foot of plug connector J10 is just connecing wireless transmitter module power supply
Pole, 2 feet of plug connector J10 connect wireless transmitter module data terminal, and 3 feet of plug connector J10 connect wireless transmitter module power cathode, and three
One end of colelctor electrode connecting resistance R50 of pole pipe Q3,1 foot of plug connector J10, the other end order passage current limliting distribution of resistance R50
Switch 1 foot of U11,2 feet of plug connector J10, the base stage of audion Q3 connects 29 feet of microprocessor U1, audion through resistance R49
The grounded emitter of Q3.
Wireless receiving interface circuit 16 includes resistance R51, resistance R52, resistance R53, resistance R54, audion Q4 and grafting
Part J11, plug connector J11 are used for connecting wireless receiving module, use 315MHz wireless receiving module, and 1 foot of plug connector J11 connects nothing
Line receiver module positive source, 2 feet of plug connector J11 connect wireless receiving module data terminal, and 3 feet of plug connector J11 are empty, plug connector
4 feet of J11 connect wirless transmitting and receiving module power cathode, one end of colelctor electrode connecting resistance R51 of audion Q4, resistance R52
One end, 98 feet of another termination microprocessor U1 of resistance R51, another termination power of resistance R52, the emitter stage of audion Q4
Ground connection, one end of base stage connecting resistance R53 of audion Q4, one end of resistance R54, the other end ground connection of resistance R53, resistance R54
The other end patch 2 feet of fitting J11,1 foot of the 1 foot order passage current limliting panel switches U11 of plug connector J11.
Soil humidity sensor interface circuit 11 is used to connect the TDR-3 type soil water more nearby at distance acquisition control device
Sub sensor detects soil moisture；Wireless transmitter module, wireless receiving is connected the most then using wireless interface circuit 3
Module, wirless transmitting and receiving module connects soil humidity sensor and detects soil moisture.
Owing to wireless transmitter module is different from the frequency of wireless receiving module, it is to avoid launch, receive the phase of wireless signal
Interference mutually, soil humidity sensor connects wirless transmitting and receiving module, and wirless transmitting and receiving module receives wireless transmitter module and sends out
The 433MHZ signal gone out, controls soil humidity sensor work, the humidity information detected is passed through wirless transmitting and receiving module
415MHZ signal launch, wireless receiving module receives this signal.
As it is shown in figure 9, network interface circuit 4 include ethernet transceiver U12, RJ45 joint, resistance R55 to resistance R74,
Electric capacity C17 to electric capacity C21, the model of ethernet transceiver U12 be the model of DM9161AEP, RJ45 joint be HR911105A,
10 feet of too net transceiver U12 connect 12 feet of 65 feet of microprocessor U1, too net transceiver U12 connect microprocessor U1 24 feet,
One end of resistance R61,67 feet of another termination microprocessor U1 of resistance R61, the 32 foot connecting resistance R57 of too net transceiver U12
One end, one end of resistance R59, resistance R57 another termination microprocessor U1 66 feet, the other end power supply of resistance R59, too
One end of 25 foot connecting resistance R58 of net transceiver U12,25 feet of microprocessor U1, another termination power of resistance R58, too net
24 feet of transceiver U12 connect 37 feet of 16 feet of microprocessor U1, too net transceiver U12 and connect 32 feet of microprocessor U1, too net
29 feet of transceiver U12 connect 28 feet of 33 feet of microprocessor U1, too net transceiver U12 and connect 34 feet of microprocessor U1, too net
21 feet of transceiver U12 connect 20 feet of 48 feet of microprocessor U1, too net transceiver U12 and connect 51 feet of microprocessor U1, too net
19 feet of transceiver U12 connect 3 feet of 52 feet of microprocessor U1, too net transceiver U12,4 feet, 7 feet, 8 feet, 11 feet, 13 feet with
3 feet of RJ45 joint, 6 feet, 1 foot, 2 feet, 10 feet, 11 foot correspondences connect.
As shown in Figure 10, power circuit 5 includes that power switch circuit 17, mu balanced circuit 18, charging circuit 19 and electricity refer to
Show circuit 20.
Power switch circuit 17 include resistance R87, resistance R88, resistance R89, diode D1, diode D2, electric capacity C26,
Switch K2 and audion Q7, a termination power of resistance R87, the positive pole of another terminating diode D1 of resistance R87, microprocessor
58 feet of U1, the negative pole of diode D1 connect diode D2 negative pole and after electric capacity C26 in parallel, switch K2 ground connection, diode
One end of positive pole connecting resistance R88 of D2, mu balanced circuit 18, the colelctor electrode of another termination audion Q7 of resistance R88, audion Q7
Base stage connect 57 feet of microprocessor U1, the grounded emitter of audion Q7 through resistance R89.
Mu balanced circuit 18 includes resistance R90, electric capacity C27, electric capacity C28, electric capacity C29, electric capacity C30, electric capacity C31, electric capacity
C32, electric capacity C33, diode D5, coil L, manostat U14 and pressure regulator U15, the model of manostat U14 is LM2576T-5.0,
The model of pressure regulator U15 is LM1117.
Charging circuit 19 includes resistance R83, resistance R84, resistance R85, resistance R86, electric capacity C24, electric capacity C25, diode
D3, diode D4, audion Q5, lithium battery BT2 and plug connector J14, plug connector J14 is used for meeting external power supply, the one of resistance R86
Termination power, another termination 59 feet of microprocessor U1, colelctor electrode of audion Q5 of resistance R86, the emitter stage of audion Q5
Ground connection, the base stage of audion Q5 is through one end of resistance R84 connecting resistance R83, one end of resistance R85, another termination of resistance R83
Ground, the other end of resistance R85 is just patching 2 feet of fitting J14, one end of electric capacity C24, one end of electric capacity C25, diode D3
Pole, the negative pole of diode D3 connects the positive pole of lithium battery BT2, the positive pole of diode D4, the other end of electric capacity C24, electric capacity C25 another
One end, the minus earth of lithium battery BT2, the negative pole of diode D4 connects 12V power supply.
Battery capacity indication circuit 20 includes resistance R79, resistance R80, resistance R81, resistance R82, diode D4, audion Q6,
The colelctor electrode of audion Q6 connects 12V power supply, and the base stage of audion Q6 meets 60 feet of microprocessor U1, audion Q6 through resistance R79
Emitter stage through one end of resistance R81 connecting resistance R80, one end of resistance R82, the other end ground connection of resistance R82.
As shown in figure 11, GPS and GPRS communication interface circuit 21 includes single channel current limliting panel switches U13, transceiver
U17, resistance R75 are to resistance R78, electric capacity C22, electric capacity C23, electric capacity C34 to electric capacity C37, plug connector J12 and plug connector J13, single
The model of passage current limliting panel switches U13 is TPS2041BDBV, and the model of transceiver U17 is MAX3232, and plug connector J12 is used for
Connecting GPRS communication module, GPRS communication module uses LT2302 embedded GPRS DTU module, and 1 foot of plug connector J12 connects
The ON/OFF end of GPRS communication module, 2 feet of plug connector J12 connect the positive source DC+ of GPRS communication module, the 3 of plug connector J12
Foot ground connection, 5 feet of Transistor-Transistor Logic level serial ports reception RX, plug connector J12 that 4 feet of plug connector J12 connect GPRS communication module meet GPRS and lead to
What the Transistor-Transistor Logic level serial ports of news module sent that 6 feet of TX, plug connector J12 connect GPRS module gets out signal LINK, plug connector J12
One end of 1 foot connecting resistance R75,76 feet of microprocessor U1,4 feet of plug connector J12 connect 78 feet of microprocessor U1, plug connector
5 feet of J12 connect 79 feet of microprocessor U1, and 6 feet of plug connector J12 connect 77 feet of microprocessor U1, one end of resistance R76, electricity
Another termination power of resistance R76.
Plug connector J13 is used for connecting GPS communication module, uses global BR-355 GPS module, and 1 foot of plug connector J13 connects
Ground, 3 feet of RS-232 serial ports transmission TX, plug connector J13 that 2 feet of plug connector J13 connect GPS communication module connect GPS communication module
RS-232 serial ports receive RX, 4 feet of plug connector J13 connect the positive source of GPS communication module, and 5 feet of plug connector J13 meet GPS
The power cathode of communication module, 13 feet of 2 foot transceiver U17 of plug connector J13,3 foot transceiver U17 of plug connector J13
14 feet, 1 foot of 4 foot order passage current limliting panel switches U13 of plug connector J13, one end of electric capacity C22, the one of electric capacity C23
End, the other end of electric capacity C22, the other end ground connection of electric capacity C23,4 feet of single channel current limliting panel switches U13 meet microprocessor U1
85 feet, one end of resistance R77, another termination power of resistance R77,11 feet of transceiver U17 connect 80 feet of microprocessor U1,
12 feet of transceiver U17 connect 83 feet of microprocessor U1.
During start, the 5 foot level pressing switch K2, manostat U14 are dragged down by diode D2, switch K2, manostat U14 work
Making output 5V power supply, export 3.3V power supply through manostat U15, control circuit starts.Immediately by ONOFF_ after control circuit startup
POWER position signal sets high, and audion Q7 turns on, and 5 feet being maintained manostat U14 by resistance R88 are low level, keeps voltage stabilizing electricity
Road 18 normally works.When shutdown, press switch K2, ONOFF_SW signal through diode D1, switch K2 step-down level, control electricity
Road completes the work such as data preservation after detecting, and etc. switch K2 upspring after ONOFF_POWER position signal is set low, audion
Q7 ends, and 5 feet of manostat U14 uprise level mu balanced circuit 18 and quit work, system cut-off.Charging circuit 19 realizes battery and fills
Electricity instruction function, after plug connector J14 accesses civil power, audion Q5 turns on Power_SW signal step-down, when plug connector J14 power-off
Rear audion Q5 ends, and Power_SW signal uprises, and control circuit is by detection Power_SW signal level, instruction charging shape
State, diode D3, diode D4 all use low pressure drop diode, reduce the loss of power.Battery capacity indication circuit 20 is by gathering electricity
Cell voltage calculates battery remaining power, and when need to gather battery, control circuit sets high Batter_Power signal level, audion Q6
Conducting, control circuit gathers Batter_AD point voltage by A/D mouth.Control circuit sets low Batter_Power signal electricity at ordinary times
Flat, audion Q6 ends, and resistance R81, resistance R82 do not shunt, and reduces battery loss.
Control circuit includes that STM32F107 and support device thereof, crystal oscillator X1 are low frequency crystal oscillator, supplies together with lithium battery BT1
Microprocessor U1 internal RTC circuit work, provides real-time clock for system, crystal oscillator X2 be high frequency clock be the work clock of U1,
The electrification reset circuit of resistance R1, electric capacity C5 composition system, resistance R3, electric capacity C6, switch K1 form wake-up circuit, at system
When power saving sleep state, being used for waking up up system, plug connector J0, plug connector J1 and adnexa thereof are the programming of control circuit, debugging
Interface.
Baroceptor interface circuit 6 is atmosphere pressure sensor interface, and soil temperature sensor interface circuit 7 is soil temperature
Degree sensor interface, aerial temperature and humidity sensor interface circuitry 8 is aerial temperature and humidity sensor interface, and single channel current limliting distribution is opened
Close U2, resistance R13, the power supply circuits of electric capacity C7, electric capacity C8 composition three of the above sensor, when starting to gather one of them sensing
During device, it is low level that control circuit 1 puts CG3V3_Power signal, and single channel current limliting panel switches U2 opens, sensor power,
Starting working, having gathered rear control circuit 1 and having put CG3V3_Power signal is high level, and single channel current limliting panel switches U2 breaks
Opening, sensor quits work, thus effectively lowers power consumption.Baroceptor interface circuit 6 is atmosphere pressure sensor interface,
MS5540C, by I2C bus and microprocessor U1 communication, sends atmospheric pressure digital signal to microprocessor U1.The soil moisture
Sensor interface circuitry 7 is soil temperature sensor interface, uses DS18B20, by TuWen_DATA mono-line and microprocessor
U1 communication, TuWen_Online is sensor line detection signal, terminates power cathode at sensor, after accessing sensor,
TuWen_Online becomes low level, is otherwise high level.Whether microprocessor U1 passes through on-line checking electric circuit inspection sensor
Online.Soil temperature sensor interface circuit 7 is soil temperature sensor interface, uses SHT11, by KongQi_clk,
KongQi_DATA two-wire system signal and microprocessor U1 communication, KongQi_Online is sensor line detection signal, is passing
Sensor termination power negative pole, after accessing sensor, KongQi_Online becomes low level, is otherwise high level.Microprocessor
U1 is the most online through on-line checking electric circuit inspection sensor.
Air velocity transducer interface circuit 9 is wind speed wind direction sensor interface, and optical sensor interface circuit 10 is strong for illumination
Degree sensor interface, soil humidity sensor interface circuit 11 is soil humidity sensor interface, single channel current limliting panel switches
The power supply circuits of U4, resistance R23, electric capacity C9, electric capacity C10 composition three of the above sensor, when starting to gather one of them sensing
During device, it is low level that control circuit 1 puts CG5V_Power signal, and single channel current limliting panel switches U4 opens, and sensor power is opened
Beginning work, having gathered rear control circuit 1 and having put CG5V_Power signal is high level, and single channel current limliting panel switches U4 disconnects,
Sensor quits work, thus effectively lowers power consumption.Air velocity transducer interface circuit 9 is wind speed wind direction sensor interface, uses
EC-8SX integration wind speed wind direction sensor, sensor signal passes through dual power supply conversion transceiver U5 and microprocessor U1 isolates,
Wind direction signals uses Gray code, obtains wind direction angle by decoding after input microprocessor U1, and wind velocity signal CP is pulse letter
Number, microprocessor U1 calculates wind speed by measuring pulse frequency.Feng_Online is sensor line detection signal, is passing
Sensor termination power negative pole, after accessing sensor, Feng_Online becomes low level, is otherwise high level.Microprocessor U1
The most online through on-line checking electric circuit inspection sensor.Optical sensor interface circuit 10 is intensity of illumination sensor interface, adopts
With RY-G type intensity of illumination sensor, send 4-20mA electric current loop signal, resistance R27, resistance R28, resistance R29, resistance R30 and
Operational amplifier U6 forms signal conditioning circuit, and current signal is converted into the voltage signal of 0-3V, by microprocessor U1's
A/D translation interface measures signal intensity, calculates intensity of illumination.GuagZhao_Online is sensor line detection signal,
Sensor termination power cathode, after accessing sensor, GuagZhao_Online becomes low level, is otherwise high level.Micro-place
Device U1 is the most online through on-line checking electric circuit inspection sensor for reason.Soil humidity sensor interface circuit 11 senses for soil moisture
Device interface, uses TDR-3 soil moisture sensor, exports 0-2.5V voltage signal, resistance R32, resistance R33, resistance R34, electricity
Resistance R35 and operational amplifier U7 forms signal conditioning circuit, exports 0-3V voltage signal, is changed by the A/D of microprocessor U1
Interface measures signal intensity, calculates soil moisture content.TuShi_Online is sensor line detection signal, in sensor side
Connecing power cathode, after accessing sensor, TuShi_Online becomes low level, is otherwise high level.Microprocessor U1 warp exists
Line detection circuit detection sensor is the most online.
Carbon dioxide sensor interface circuit 12 is by serial ports and microprocessor U1 communication, and microprocessor U1 is taken by serial ports
Obtain C02Concentration.Single channel current limliting panel switches U8, resistance R36, the power supply circuits of electric capacity C12, electric capacity C13 composition sensor, when
When starting to gather sensor, control circuit 1 puts C02_ Power signal is low level, and single channel current limliting panel switches U4 opens, and passes
Sensor is powered, and starts working, and has gathered rear control circuit 1 and has put C02_ Power signal is high level, and single channel current limliting distribution is opened
Closing U8 to disconnect, sensor quits work, thus effectively lowers power consumption.C02_ Online is sensor line detection signal, is passing
4 feet of sensor end J7 connect positive source, and after accessing sensor, audion Q1 turns on, C02_ Online becomes low level, otherwise
Audion Q1 ends, C02_ Online is high level.Microprocessor U1 is the most online through on-line checking electric circuit inspection sensor.
Evaporation sensor interface circuit 13, ZFL1 type vaporizer output 0-20mV voltage signal.Operational amplifier U9, fortune
Calculation amplifier U10, resistance R42, resistance R43, resistance R44 form signal conditioning circuit, export 0-3V voltage signal, by micro-place
The A/D translation interface of reason device U1 measures signal intensity, calculates evaporation capacity.Resistance R40, audion Q2 form power supply circuits, when
When starting to gather sensor, it is high level that control circuit 1 puts ZhengFa_Power signal, and audion Q2 turns on, and sensor supplies
Electricity, starts working.Collection complete after control circuit 1 to put ZhengFa_Power signal be low level, audion Q2 ends, sensing
Device quits work, thus effectively lowers power consumption.ZhengFa_Online is sensor line detection signal, at sensor termination electricity
Source negative pole, after accessing sensor, ZhengFa_Online becomes low level, is otherwise high level.Microprocessor U1 is through online
Testing circuit detection sensor is the most online.
Rainfall amount sensor interface circuit 14, rainfall amount sensor uses RY-YLH02 rainfall amount sensor, exports pulse
Signal, after electric capacity C14, resistance R47 filter, input microprocessor U1, microprocessor U1 calculate fall by measuring pulse frequency
Rainfall.
Wireless interface circuit 3 connects wireless sensor node, and wave point uses to send and receives bifrequency structure, and information is sent out
Sending and take 433MHz channel, data receiver takies 315MHz channel.Polling mode is used to inquire about each sensing data.Wireless transmission
Wireless transmission interface is formed by resistance R49, resistance R50, audion Q3 with 433MHz wireless transmitter module shown in interface circuit 15,
Microprocessor U1 sends modulation intelligence by WuXian_433, after audion Q3 makees level translation, by 433MHz wireless transmission
Module sends.Shown in wireless receiving interface circuit 16 by resistance R51, resistance R52, resistance R53, resistance R54, audion Q4 and
315MHz wireless receiving module composition wireless receiving interface, reception signal, after audion Q4 makees level conversion, passes to micro-place
Reason device U1, microprocessor U1 demodulating received signal obtains metrical information.Single channel current limliting panel switches U11, resistance R48, electricity
Holding C14, electric capacity C15 and form the power supply circuits of this interface, when starting communication, control circuit 1 is put WuXian_Power signal and is
Low level, single channel current limliting panel switches U11 opens, and interface is powered, and starts working, and after communication completes, control circuit 1 is put
WuXian_Power signal is high level, and single channel current limliting panel switches U11 disconnects, and interface quits work, thus effectively lowers
Power consumption.
Wired network interface circuit 4 realizes the wired connection of device and Internet network.DM9161AEP be a completely
Integrated and meet cost benefit single-chip Fast Ethernet PHY, it is a conventional physical layer transceiver.HR911105A is
With the network socket of networking transformator, utilize this sets of plan can form reliably, network interface with low cost.
GPRS radio network interface is made up of resistance R75, resistance R76 and GPRS communication module, and GPRS communication module is passed through
Transistor-Transistor Logic level rs 232 serial interface signal GPRS_RX, GPRS_TX are connected with microprocessor U1, are connected with Internet through GPRS module, it is achieved
Long-distance intelligent control and remote data transmission.Microprocessor U1 controls in GPRS module by arranging GPRS_OFFON low and high level
Electricity or power-off.Duty by GPRS_LINK signal enquiry module.
GPS interface electricity routing resistance R77, resistance R78, electric capacity C22, electric capacity C33, single channel current limliting panel switches U13, receipts
Send out device U17 and GPS communication module composition, be used for receiving the on-site geography information of device and standard time.Microprocessor U1
GPS communication module information is received by RS-232 interface.Transceiver U17 is RS-232 level shifting circuit.Single channel current limliting is joined
Electric switch U13, resistance R77, electric capacity C22, electric capacity C23 form the power supply circuits of this interface, when starting communication, and control circuit 1
Putting GPS_Power signal is low level, and single channel current limliting panel switches U13 opens, and GPS communication module is started working, and communication is complete
After one-tenth, control circuit 1 puts GPS_Power signal is high level, and single channel current limliting panel switches U13 disconnects, and GPS communication module stops
Only work, thus effectively lower power consumption.GPS_Online is GPS communication module line detection signal, at sensor termination power
Negative pole, after accessing GPS communication module, GPS_Online becomes low level, is otherwise high level.
Below being only a kind of Techniques of Optimum scheme of the present invention, the above circuit of the present invention is not unique, wherein each
Individual circuit can also use other forms, as long as being capable of its function.
One skilled in the art would recognize that above-mentioned detailed description of the invention is exemplary, be to make ability
Field technique personnel can be better understood from present invention, should not be understood as limiting the scope of the invention.At this
Under the enlightenment of bright technical scheme, those skilled in the art can use alternate manner to realize the present invention's without creative work
The change of quantity in purpose, such as sensor interface circuitry, and the change etc. of wireless interface circuit, as long as according to the present invention
Technical scheme improvements introduced, each falls within protection scope of the present invention.
Claims (1)
1. there is the agricultural environment information acquisition control device of evaporation sensor interface circuit, it is characterised in that: described agricultural
Environment information acquisition control device include electrical connection control circuit (1), evaporation sensor interface circuit (13), GPS and
GPRS communication interface circuit (21)；
Described evaporation sensor interface circuit (13) is connected with control circuit (1)；
Described GPS and GPRS communication interface circuit (21), by GPRS communication module, wireless connections Internet network, by number
According to sending to remote server；
Described control circuit (1) includes microprocessor U1, shift register U16, and the model of microprocessor U1 is STM32F107,
94 feet of microprocessor U1 patch 8 feet and the indirect crystal oscillator X1 of 9 feet, the microprocessor of fitting J0, microprocessor U1 through resistance R4
12 feet of U1 and one end of 14 foot connecting resistance R1 of the indirect crystal oscillator X2, microprocessor U1 of 13 feet, one end of electric capacity C5, resistance R1
Another termination power, the other end ground connection of electric capacity C5；
23 feet of described microprocessor U1 connect wake-up circuit, and wake-up circuit includes resistance R3, electric capacity C6 and switch K1, microprocessor
One end of 23 foot connecting resistance R3 of U1, one end of electric capacity C6 and one end of switch K1, another termination power of resistance R3, switch K1
Other end ground connection, the other end ground connection of electric capacity C6；
1 foot of described shift register U16 connects 63 feet of microprocessor U1, and 2 feet of shift register U16 connect microprocessor U1's
61 feet, 9 feet of shift register U16 connect 62 feet of microprocessor U1；
Described evaporation sensor interface circuit (13) includes operational amplifier U9, operational amplifier U10, resistance R40, resistance
R41, resistance R42, resistance R43, resistance R44, audion Q2 and plug connector J8, operational amplifier U9, the type of operational amplifier U10
Number being LM358, plug connector J8 is used for connecting evaporation sensor, and evaporation sensor uses ZFL1 type vaporizer, plug connector J8
1 foot connect the signal end of evaporation sensor, 2 feet of plug connector J8 connect the positive source of evaporation sensor, the 3 of plug connector J8
Foot ground connection, 4 feet of plug connector J8 connect the power cathode of evaporation sensor, and the base stage of audion Q2 connects micro-process through resistance R40
37 feet of device U1, the colelctor electrode of audion Q2 connects power supply, and the emitter stage of audion Q2 connects the power end of operational amplifier U9, grafting
2 feet of part J8, one end of 4 foot connecting resistance R41 of plug connector J8,3 feet of shift register U16, another termination electricity of resistance R41
Source, 1 foot of plug connector J8 connects the in-phase input end of operational amplifier U9, and the anti-phase input of operational amplifier U9 terminates its output
End, the outfan of operational amplifier U9 connects the in-phase input end of operational amplifier U10 through resistance R42, and resistance R44 is connected to computing
Between inverting input and the outfan of amplifier U10, the inverting input of operational amplifier U10 is through resistance R43 ground connection, computing
36 feet of the output termination microprocessor U1 of amplifier U10；
Described GPS and GPRS communication interface circuit (21) includes single channel current limliting panel switches U13, transceiver U17, resistance R75
To resistance R78, electric capacity C22, electric capacity C23, electric capacity C34 to electric capacity C37, plug connector J12 and plug connector J13, single channel current limliting is joined
The model of electric switch U13 is TPS2041BDBV, and the model of transceiver U17 is MAX3232, and plug connector J12 is used for connecting GPRS and leads to
News module, GPRS communication module uses LT2302 embedded GPRS DTU module, and 1 foot of plug connector J12 connects GPRS communication module
ON/OFF end, 2 feet of plug connector J12 connect the 3 foot ground connection of the positive source DC+ of GPRS communication module, plug connector J12, grafting
4 feet of part J12 connect the Transistor-Transistor Logic level serial ports of GPRS communication module and receive RX, and 5 feet of plug connector J12 meet the TTL of GPRS communication module
6 feet of level serial ports transmission TX, plug connector J12 connect the 1 foot connecting resistance getting out signal LINK, plug connector J12 of GPRS module
One end of R75,76 feet of microprocessor U1,4 feet of plug connector J12 connect 78 feet of microprocessor U1, and 5 feet of plug connector J12 connect
79 feet of microprocessor U1,6 feet of plug connector J12 connect 77 feet of microprocessor U1, one end of resistance R76, another of resistance R76
Termination power；
Described plug connector J13 is used for connecting GPS communication module, uses global BR-355 GPS module, and 1 foot of plug connector J13 connects
Ground, 3 feet of RS-232 serial ports transmission TX, plug connector J13 that 2 feet of plug connector J13 connect GPS communication module connect GPS communication module
RS-232 serial ports receive RX, 4 feet of plug connector J13 connect the positive source of GPS communication module, and 5 feet of plug connector J13 meet GPS
The power cathode of communication module, 13 feet of 2 foot transceiver U17 of plug connector J13,3 foot transceiver U17 of plug connector J13
14 feet, 1 foot of 4 foot order passage current limliting panel switches U13 of plug connector J13, one end of electric capacity C22, the one of electric capacity C23
End, the other end of electric capacity C22, the other end ground connection of electric capacity C23,4 feet of single channel current limliting panel switches U13 meet microprocessor U1
85 feet, one end of resistance R77, another termination power of resistance R77,11 feet of transceiver U17 connect 80 feet of microprocessor U1,
12 feet of transceiver U17 connect 83 feet of microprocessor U1；
Described shift register U16 is formed in line detection circuit, by eight parallel-by-bit input/serial output register 74LV165 groups
Becoming, microprocessor U1 inputs the presence of each sensor by shift register U16.
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| CN201410068386.XA CN103926886B (en) | 2014-02-27 | 2014-02-27 | There is the agricultural environment information acquisition control device of evaporation sensor interface circuit |
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| CN201410068386.XA CN103926886B (en) | 2014-02-27 | 2014-02-27 | There is the agricultural environment information acquisition control device of evaporation sensor interface circuit |
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| CN112330947A (en) * | 2020-11-20 | 2021-02-05 | 浙江大学 | Secondary water supply pump house data acquisition circuit based on STM32 singlechip |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8035403B1 (en) * | 2009-02-03 | 2011-10-11 | Green Badge, LLC | Wireless soil sensor utilizing a RF frequency for performing soil measurements |
| CN103004559A (en) * | 2012-11-21 | 2013-04-03 | 黑龙江八一农垦大学 | Precision control system for water layer of rice square field |
| CN203241793U (en) * | 2013-04-18 | 2013-10-16 | 何惠彬 | Agriculture production monitoring and management system based on internet of things |
| CN203338054U (en) * | 2013-07-04 | 2013-12-11 | 徐州工程学院 | Agricultural environment monitoring system |
| CN203838505U (en) * | 2014-02-27 | 2014-09-17 | 山东安博仪器股份有限公司 | Agricultural environment information acquisition control device with evaporation capacity sensor interface circuit |
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2014
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8035403B1 (en) * | 2009-02-03 | 2011-10-11 | Green Badge, LLC | Wireless soil sensor utilizing a RF frequency for performing soil measurements |
| CN103004559A (en) * | 2012-11-21 | 2013-04-03 | 黑龙江八一农垦大学 | Precision control system for water layer of rice square field |
| CN203241793U (en) * | 2013-04-18 | 2013-10-16 | 何惠彬 | Agriculture production monitoring and management system based on internet of things |
| CN203338054U (en) * | 2013-07-04 | 2013-12-11 | 徐州工程学院 | Agricultural environment monitoring system |
| CN203838505U (en) * | 2014-02-27 | 2014-09-17 | 山东安博仪器股份有限公司 | Agricultural environment information acquisition control device with evaporation capacity sensor interface circuit |
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