CN108759930A

CN108759930A - The grain feelings of more power supplies and communication mode are supported to detect extension set

Info

Publication number: CN108759930A
Application number: CN201810859541.8A
Authority: CN
Inventors: 王志民; 刘文敬; 朱鹏飞
Original assignee: Source Zhengzhou Powerise Control Co Ltd
Current assignee: Zhengzhou Banghai Intelligent Technology Co ltd
Priority date: 2018-08-01
Filing date: 2018-08-01
Publication date: 2018-11-06

Abstract

The present invention relates to supporting the grain feelings of more power supplies and communication mode to detect extension set, technical solution is, including extension set shell and the circuit board in shell, and control circuit is housed on circuit board, and the control circuit includes:Intelligent power supply module, sensor interface module, communication module, supply voltage detection module, data processing module；The data processing module is connected with intelligent power supply module, sensor interface module, communication module and supply voltage detection module respectively；The intelligent power supply module includes the lithium battery charging management circuit being connected respectively with data processing module, power supply automatic switchover circuit and working sensor power circuit；Strong antijamming capability of the present invention, it is easy to operate, be easy to wiring, be adaptable, economical and practical.

Description

The grain feelings of more power supplies and communication mode are supported to detect extension set

Technical field

The present invention relates to grain storage detection technique fields, especially a kind of to support to power and the inspection of the grain feelings of communication mode more Survey extension set.

Background technology

By taking the grain information monitoring system in grain storage industry as an example, the grain mutual affection machine of existing market is with solar energy channel radio News mode it is in the majority, 220V power supply or wire communication it is seldom.

(1) according to on-site actual situations, some occasions are in the back, and sunray is insufficient, and solar powered mode is limited；

(2) solar power supply unit can only be installed on outdoor, can not be integrated into certain switch boards；

(3) poor anti jamming capability：When using wireless communication, when signal interference occurs for outside, transmission data can be abnormal；

(4) with other system globe areas at scene when, existing RS485 communications or fiber optic network, wireless telecommunications side need to be relied on Formula can not be merged；

(5) wire communication in the market, interface is single, RS485 interfaces is generally used, without Ethernet.In order to realize with Too Network Communication need to separately add serial server, and such price is high, and power consumption is big, and stability is not strong；

(6) RS485 is used to communicate without increasing isolation jamming countermeasure, data transmission is susceptible to problem；

(7) installation trouble, all wirings are directly connected in outside, it has not been convenient to also dangerous；

Therefore, the improvement and innovation of grain feelings detection extension set are imperative.

Invention content

For the above situation, to overcome the defect of the prior art, the purpose of the present invention be just to provide a kind of load capacity it is strong, Strong antijamming capability, the grain feelings detection extension set be easy to wiring, be economical and practical, supporting more power supplies and communication mode.

The technical solution that the present invention solves is：

It is a kind of to support to power and the grain feelings of communication mode detection extension set, including extension set shell and the circuit in shell more Plate, control circuit is equipped on circuit board, and the control circuit includes:

Intelligent power supply module：For providing 3.3V 5V working powers；

Sensor interface module：Including Temperature Humidity Sensor interface and grain temperature sensor interface, passed for connecting humiture Sensor and grain temperature sensor (temperature sensor of detection cereal temperature), for extension set provide the wet data in storehouse temperature storehouse (grain temperature, Silo humidity data) and grain temperature data (cereal temperature data)；

Communication module：For completing receiving host order and uploading collected data of the Temperature and Humidity module and grain temperature data；It should Module include Temperature Humidity Sensor communication, RS485 wire communications either the communication of network interface communication wired or network interface be for Corresponding measurement and control host computer communication, completes receiving host order, uploads the functions such as collected humiture and grain temperature data；With The RS485 communications that Temperature Humidity Sensor, the communication of grain temperature sensor use.

Supply voltage detection module：For the detection of circuit supply voltage and output voltage detection；Including externally fed voltage Detection, the detection of booster circuit supply voltage, the detection of booster circuit output voltage；

Data processing module：For the processing of grain temperature gathered data, the wet detection data processing of Cang Wencang, lithium battery charging inspection It surveys, detection subordinate machine system power supply monitoring；

The data processing module is electric with intelligent power supply module, sensor interface module, communication module and power supply respectively Detection module is pressed to be connected.

The intelligent power supply module includes the lithium battery charging management circuit being connected respectively with data processing module, power supply Automatic switch-over circuit and working sensor power circuit；

The lithium battery charging management circuit includes charging manager U3, and 1 foot of charging manager U3 connects chip respectively The connecing of U11, the cathode of solar cell for supplying power, one end of discharge tube T7, discharge tube T1 one end, have electrode capacitance C1's Cathode, 3 feet (grounding leg) of charging manager U3, resistance R12 one end, have electrode capacitance C6 cathode and 3.7V lithium batteries end 2 feet of mouth hold ground connection, 2 feet of charging manager U3 to be connected with the other end of resistance R12 altogether, the 4 feet difference of electric manager U3 The cathode of diode D2, the cathode of diode D1 and the anode for having electrode capacitance C1 are connect, end is connected with power supply out splice going splice SDC altogether, The anode of diode D2 is connected with the other end of the 5V power supplys output pin of chip U11 and discharge tube T7 respectively, is supplied as 5V power supplys Electricity output end (is connected with 5V power connection VCC5V), and the anode of diode D1 connects the anode of solar cell for supplying power and puts respectively The other end of fulgurite T1, as solar cell for supplying power output end, 5 feet of charging manager U3 meet charging manager U3 respectively 8 feet, the anode and 3.7V lithium batteries port that have electrode capacitance C6 1 foot, (be connected with as 3.7V lithium battery power supply output ends 3.7V lithium batteries connector BAT+), 6 feet, 7 feet of charging manager U3 are connected with data processing module respectively, the fire of chip U11 Line input terminal distinguishes one end of one end and fuse F2 of connecting resistance RM, and the other end of fuse F2 is that 220V power supply firewires are defeated Enter end, one end of the other end and resistance RT1 of the zero curve input terminal difference connecting resistance RM of chip U11, the other end of resistance RT1 For 220V power supply zero curve input terminals.

The power supply automatic switchover circuit includes three terminal regulator U2, PMOS tube U8A, U8B and triode Q1, Q8, three ends 2 feet (input pin) of voltage-stablizer U2 be connected to respectively the anode of electrode capacitance C2, the source electrode of PMOS tube U8B, diode D5 cathode, The emitter of triode Q1, one end and PMOS tube U8A of resistance R35 source electrode, altogether end as VCC output port of power source (connection Have VCC power supplys out splice going splice VCC), have the cathode of electrode capacitance C2 be connected to respectively the cathode of electrode capacitance C7, three terminal regulator U2 1 Foot (grounding leg), one end of resistance R37, the emitter of triode Q8, resistance R34 one end, altogether end ground connection (is connected with ground connection Connector GND), the drain electrode of PMOS tube U8B is connected with the anode of diode D5, and the grid of PMOS tube U8B connects triode Q1's respectively The other end of collector and resistance R37, the base stage of triode Q1 connect the collector and resistance of triode Q8 through resistance R38 respectively One end of R36, the grid of the other end and PMOS tube U8A of the other end difference connecting resistance R35 of resistance R36, PMOS tube U8A's Drain electrode connects one end of the cathode and resistance R42 of controllable accurate source of stable pressure Q2 respectively, altogether end and electricity in lithium battery charging management circuit 4 feet of manager U3 are connected, one end of the anode difference connecting resistance R41 of controllable accurate source of stable pressure Q2, the other end of resistance R34 With one end of resistance R43, the reference of the other end and controllable accurate source of stable pressure Q2 of the other end difference connecting resistance R42 of resistance R43 Pole, the base stage of the other end and triode Q8 of resistance R41 and are having electrode capacitance C7 just at 3 feet (output pin) of three terminal regulator U2 Extremely it is connected, end is as 3.3V power output ends VCC3.3V altogether (connection 3.3V power supplys export VCC3.3V)；

The working sensor power circuit includes booster U7, PMOS tube U1A, U1B, and 1 foot of booster U7 connects respectively The anode of diode D3 and one end of inductance L1, the cathode of diode D3 respectively one end of connecting resistance R2, have electrode capacitance C15's Positive, one end of capacitance C21 and fuse F1 one end, the other end of resistance R2 connect 3 feet and resistance R3 of booster U7 respectively One end, the other end of resistance R3 connect respectively the anode of zener diode T4, capacitance C21 the other end, have electrode capacitance C15's Cathode, one end of resistance R1, booster U7 2 feet, have electrode capacitance C3 cathode, have electrode capacitance C14 one end and triode Q4 Emitter, end ground connection altogether, the other end of fuse F1 is connected with the cathode of zener diode T4, holds be used as VDD power supplys defeated altogether Exit port (is connected with VDD power supplys out splice going splice VDD), and the other end of inductance L1 connects 4 feet of booster U7,5 feet, has pole respectively The inspection detected as booster circuit supply voltage is held in the drain electrode of the anode of capacitance C3, one end and PMOS tube U1A of capacitance C14 altogether Measuring point VEE (is connected with booster circuit supply voltage detection tabs VEE), and the one of the source electrode difference connecting resistance R8 of PMOS tube U1A It holds, the source electrode of the cathode of diode D7 and PMOS tube U1B, holds the leakage of VFF and PMOS tube U8B in power supply automatic switchover circuit altogether Pole, diode D5 the total end of anode be connected, the other end of resistance R8 connects the grid and triode Q4 of PMOS tube U1A respectively Collector, the grid of one end and PMOS tube U1B of the anode difference connecting resistance R29 of diode D7, holds PWR_5V and lithium battery altogether The anode of diode D2,1 foot of 5V power ports P9, the total end of discharge tube T7 are connected in charge management circuit, PMOS tube U1B Drain electrode as probe power feeder ear (being connected with system power supply interface PSW), the base stage of triode Q4 and the one of resistance R5 End is connected, and the other end of resistance R5 is equipped with connector VDDEN.

The communication module includes buzzer U10, RS_485 communication chip U5, communication port P7 and communication port P5, The power input of buzzer U10 respectively with one end of capacitance C18 and power supply automatic switchover circuit VCC output port of power source phases Even, the signal input part of buzzer U10 is connected with the collector of triode Q7, and the base stage of triode Q7 connects data through resistance R25 The other end of 4 feet (ports BEEP) of processing module chips U4, the emitter capacity C18 of triode Q7 is connected, and terminates altogether Ground, 1 foot of RS_485 communication chips U5 are negative with 17 feet of data processing module chips U4 and light emitting diode DS2 respectively Extremely it is connected, 2 feet of RS_485 communication chips U5 are connected with 20 feet of data processing module chips U4, RS_485 communication chips 3 feet of U5 are connected with 15 feet of data processing module chips U4,4 feet of RS_485 communication chips U5 respectively with data processing 16 feet of module chips U4 are connected with the cathode of light emitting diode DS1, the anode difference sending and receiving light two of light emitting diode DS1 The anode of pole pipe DS2 and one end of resistance R44,5 feet of RS_485 communication chips U5 meet one end of capacitance C19, resistance R6 respectively One end, one end of protector T3, protector T5 one end, end ground connection, 6 feet of RS_485 communication chips U5 connect electricity respectively altogether One end of one end and resistance R15 of R9 is hindered, the other end of resistance R9 is connected with the other end of resistance R44, and end is automatic with power supply altogether 3.3V power output ends VCC3.3V in switching circuit is connected, one end of the other end difference connection protector T8 of resistance R15 and The other end of protector T5 terminates 13 feet of sensor and power switch port P4 in integrated wiring terminal module, RS_485 altogether One end of the other end and resistance R18 of the 7 feet difference connecting resistance R6 of communication chip U5, the other end of resistance R18 connect protection respectively The other end of the other end and protector T3 of device T8 terminates sensor and power switch port in integrated wiring terminal module altogether 8 feet of 12 feet of P4, RS_485 communication chips U5 are connected with the other end of capacitance C19, altogether in end and power supply automatic switchover circuit 3.3V power output ends VCC3.3V be connected, 1 foot of communication port P7 ground connection, 2 feet meet one end of wire jumper J1, wire jumper J2 respectively One end and capacitance C20 one end, the 3.3V power output ends in the other end and power supply automatic switchover circuit of wire jumper J1 VCC3.3V is connected, and the other end of wire jumper J2 is connected with the 5V power supply power supply output ends in lithium battery charging management circuit, capacitance The other end of C20 is grounded, 3 feet of communication port P7 respectively with the cathode of light emitting diode DS4 and data processing module chips 29 feet of U4 are connected, 4 feet of communication port P7 respectively with the cathode of light emitting diode DS3 and data processing module chips U4 30 feet be connected, light emitting diode DS3 anode connect respectively Light-Emitting Diode DS4 anode and resistance R45 one end, resistance The other end of R45 is connected with the 3.3V power output ends VCC3.3V in power supply automatic switchover circuit, and 5 feet of communication port P7 connect Ground；1 foot of communication port P5 connects 13 feet of 8 access port P2 in integrated wiring terminal module, and 2 feet of communication port P5 connect 3 feet of 14 feet of 8 access port P2 in integrated wiring terminal module, communication port P5 connect in integrated wiring terminal module 8 15 feet of access port P2.

The present invention has technique effect beneficial below：

1, strong antijamming capability：Traditional RS485 communicates no safeguard measure, and this product increase is isolator protected, and data are made Transmission reliability increases；

2, easy to operate：Extension set detection is integrated into switch board, is not had to external connection all in external connection, enhancing peace Full property and meet information reform；

3, it is easy to connect up：By integrated control cabinet, external connection is set directly to be connected on corresponding port by interface, simply It is convenient；

4, adaptable：

A, in terms of power supply, power supply power supply can use solar powered, lithium battery power supply or external power supply 220V, in light When according to intensity deficiency solar panels can not normal use, it is system power supply that can use lithium battery or outside 220V power supplys, Have when opening acquisition grain temperature operation, power for grain temperature sensor, other times close power supply, loss are reduced, when sunny When, it is charged for lithium battery using solar energy, and the use of solar energy is that whole system and working sensor are powered, makes full use of money Energy waste is reduced in source, ensures that system remains to when solar energy and lithium battery can not power using external 220V power supply power supplies Normal work；

B, communication aspects can use 433 wireless, RS485 or ethernet communication, compared to list according to live different demands One wireless communication, transmission data mode is more flexible, also safer, stronger in wireless communication interference, optional RS485 or ethernet communication are selected, communication is avoided to interfere；

5, economical and practical：Ethernet communication can be used directly in this product, and the ethernet communication compared to other products uses RS485 adds the mode of serial server, this product to reduce cost and system power dissipation.

Description of the drawings

Fig. 1 is the circuit frame schematic diagram of the present invention.

Fig. 2-8 is the circuit diagram of the data processing module of the present invention.

Fig. 9-11 is the circuit diagram of the intelligent power supply module of the present invention；

Wherein Fig. 9 is lithium battery charging management circuit schematic diagram；

Figure 10 power supply automatic switchover circuit schematic diagrams：

Figure 11 working sensor power circuit principle figures.

Figure 12 is inventive sensor interface module grain temperature channel data Acquisition Circuit schematic diagram.

Figure 13 is that inventive sensor interface module grain temperature channel integrates connection terminal module circuit diagram.

Figure 14 is the circuit diagram of communication module of the present invention.

Figure 15-17 is supply voltage detection module circuit diagram of the present invention：

Wherein Figure 15 is externally fed voltage detecting circuit schematic diagram；

Figure 16 is booster circuit supply voltage detection circuit schematic diagram；

Figure 17 is booster circuit output voltage detecting circuit schematic diagram.

Figure 18 is integral module schematic diagram of the present invention.

Specific implementation mode

The specific implementation mode of the present invention is described in further detail below in conjunction with attached drawing.

It is provided by Fig. 1-18, including extension set shell and the circuit board in shell, control circuit, institute is housed on circuit board The control circuit stated includes:

Intelligent power supply module：For providing 3.3V 5V working powers；Solar cell for supplying power, lithium battery can be used Power supply or external power supply 220V power supplies；

The lithium battery charging management circuit includes charging manager U3, and 1 foot of charging manager U3 connects chip respectively The connecing of U11, the cathode of solar cell for supplying power, one end of discharge tube T7, discharge tube T1 one end, have electrode capacitance C1's Cathode, 3 feet (grounding leg) of charging manager U3, resistance R12 one end, have electrode capacitance C6 cathode and 3.7V lithium batteries end 2 feet of mouth hold ground connection, 2 feet of charging manager U3 to be connected with the other end of resistance R12 altogether, the 4 feet difference of electric manager U3 The cathode of diode D2, the cathode of diode D1 and the anode for having electrode capacitance C1 are connect, end is connected with power supply out splice going splice SDC altogether, The anode of diode D2 is connected with the other end of the 5V power supplys output pin of chip U11 and discharge tube T7 respectively, is supplied as 5V power supplys Electricity output end (is connected with 5V power connection VCC5V), and the anode of diode D1 connects the anode of solar cell for supplying power and puts respectively The other end of fulgurite T1, as solar cell for supplying power output end, 5 feet of charging manager U3 meet charging manager U3 respectively 8 feet, the anode and 3.7V lithium batteries port that have electrode capacitance C6 1 foot, (be connected with as 3.7V lithium battery power supply output ends 3.7V lithium batteries connector BAT+), 6 feet, 7 feet of charging manager U3 are connected with data processing module respectively, the fire of chip U11 Line input terminal distinguishes one end of one end and fuse F2 of connecting resistance RM, and the other end of fuse F2 is that 220V power supply firewires are defeated Enter end, one end of the other end and resistance RT1 of the zero curve input terminal difference connecting resistance RM of chip U11, the other end of resistance RT1 For 220V power supply zero curve input terminals；

Chip U11 is AC/DC power supply adaptors, model PLF12A-5V；

U3 is lithium battery charging management chip, model CN3063；

The controllable accurate source of stable pressure Q2 is the 2.5V reference voltage source chips of model TL431, is supplied for detecting solar energy Piezoelectric voltage.

The booster U7 models FP6291；

The three terminal regulator U2 models XC6214P332PR；

As shown in figure 9, the power supply in lithium battery charging management circuit can use 220V supply inputs or selection Solar panel is powered.Discharge tube T1 and T7 are used for surge protection, and diode D1 and D2 are used for anti-reverse, the circuit power Input can be selected as solar energy or 5V power supply power supplies, for solar-powered, pass through diode D1 and discharge tube T1 4 feet (VIN) and 3 feet (GND) that solar powered end is connected to charging manager U3 by protection circuit are constituted, it is extremely electric by having Hold C6 give lithium battery charging, charging manager U3 just charging status signal output end CH pins (7 foot) and be full of electricity condition Signal output end OK pins (6 foot) are separately connected 3 feet of data processing module chips U4 and 2 feet are connected.Diode Dl and D2 Cathode be also connected with solar panel power supply out splice going splice (SDC connectors), 5V input powers are directly connected to 5V power connections VCC5V。

System using solar powered end by diode D1, discharge tube T1 or 5V input power by discharge tube T7, Diode D2 is as externally fed power supply and lithium battery charging input power；Capacitance C1, charging manager U3, resistance R12, electricity Hold C6 and form lithium battery charging circuit, suitable charging modes are provided for lithium battery；This circuit is that system work increases one kind Power supply mode (220 power supply), improves system environments adaptability, enhances system job stability and safety.Diode D1, D2, discharge tube T1, T7 provide protective effect for lithium battery charging input end mouth, reduce static electricity on human body, external surge interference etc. pair System impacts.

As shown in Figure 10, power supply automatic switchover circuit includes resistance R34, R35, R36, R38, R41, R42, R43, controllably Precision voltage regulator Q2, PMOS tube U8A, U8B, triode Q8, Q1, diode D5, three terminal regulator U2, wherein PMOS tube U8A's Electric manager in the total end SDC and lithium battery charging management circuit of drain electrode, the cathode of controllable accurate source of stable pressure Q2 and resistance R42 4 feet of U3 are connected, and are inputted as sun-generated electric power, only when total end SDC is higher than 4.9V, by resistance R42 and R43, controllably Precision voltage regulator Q2, triode Q8 and Q1, PMOS tube U8A and U8B constitute power input selector, and PMOS tube U8A is connected at this time It being not turned on U8B, sun-generated electric power is by diode D5 and has electrode capacitance C7 to provide input power to three terminal regulator U2, when Solar voltage is too low, and PMOS tube U8A is not turned on, PMOS pipes U8B is connected, and power input selector selects battery powered at this time, The drain electrode of PMOS tube U8B, the positive total end VFF of diode D5 are by having the ends VIN (2 of electrode capacitance C7 and three terminal regulator U2 Foot) it is connected.Wherein the parasitic diode of PMOS tube U8A and U8B is backward dioded, with normal diode on the contrary, to prevent Electric current charges the battery by diode when battery powered, and lithium battery is caused to overshoot, this is one of this product innovation and excellent Point, three terminal regulator U2 are that system power supply functional mode is realized in system work power supply by there is electrode capacitance C7 to export 3.3V voltages Switching.

Resistance R42, R43, R34 and triode Q2 form input power gate, by triode Q8, Q1, resistance R41, R36, R35, R38, PMOS tube U8A and U8B form power supply selection circuit, are used according to the control of power supply gate state outer Portion input power SDC uses battery VFF to input electricity as three terminal regulator U2 primes with diode D5, PMOS tube U8B Source；Capacitance C2, three terminal regulator U2, capacitance C7 constitute working power circuit, and normal work electricity is provided for data processing module Source；This circuit meeting intelligent selection uses external power supply or lithium battery to be inputted as data processing module power supply, Neng Goubao Demonstrate,proving data processing module being capable of normal table operation；Wherein PMOS tube U8B and U8A source electrode and drain electrode selection reversal connection mode be Supply input electric current reversely flows into lithium battery by parasitic diode in order to prevent, and lithium battery is caused to overcharge.

As shown in figure 11, working sensor power circuit is the PSW being connected with lithium battery BAT respectively there are two types of input power Anode, the resistance R29 and PMOS pipe U1B for the diode D7 that (the power supply connector PSW of PMOS tube U1B drain electrodes) is connected with 5V power supplys Grid total end PWR_5V.Circuit includes P metal-oxide-semiconductor U1B, U1A, resistance R5, R8, R29, R1, R2, R3, diode D3, D7, triode Q4, capacitance C3, C21, zener diode T4, inductance L1 and fuse F1；When circuit uses lithium battery BAT conducts When circuit prime power input, the grid of P metal-oxide-semiconductors U1B is connected by resistance R29 with ground, the U1B conductings of P metal-oxide-semiconductors, P MOS The source electrode and drain electrode of pipe U1B increases a reversed parasitic diode, prevents electric current when battery powered from being filled to battery by diode Electricity causes lithium battery to overshoot.Be used as the input terminal of booster U7 by filter capacitor C14 and C3, at the same with pin VEE (inductance The total end that L1,4 feet of booster U7,5 feet, the anode for having electrode capacitance C3, capacitance C14 drain with PMOS tube U1A) be connected conduct The test point of booster circuit supply voltage detection.The OC pins (6 foot) of booster U7 are connected to ground by resistance R1, FB pins (3 foot) is connected between resistance R2 and R3 and is grounded by R3.Booster U7 output ends (1 foot) connection diode D3 passes through filtered electrical Hold C15 and C21 to be later connected with fuse F1, being then connected to 5V pins VDD by zener diode T4, (VDD power supplys export Port)；When the ports VDDEN (14 foot) of data processing module chips U4 export high level, triode Q4 saturation conductions, To make P MOS pipes U1A conductings be that rear class sensor circuit is powered, when the ports VDDEN of data processing module chips U4 When (14 foot) exports low level, triode Q4 cut-offs are no longer powered for rear class sensor circuit to MOS U1A cut-offs.

PMOS tube U1B, resistance R29 and diode D7 constitute external 5V power supplys and lithium battery power supply automatic switchover circuit, When external 5V power supplys work normally, it can preferentially select this power supply to system power supply；PMOS tube U1A, resistance R8, R5 and three poles Pipe Q4 constitutes sensor power supply output control circuit, and data processing module controls probe power as needed Output function；Capacitance C3, booster U7, inductance L1, diode D3, resistance R1, R2, R3, capacitance C15, C21 constitute sensing Device power supply management circuit, system is in lithium battery power supply, and with the electric discharge of lithium battery, cell output voltage can be reduced constantly, be examined Considering system, farther out from extension set, the conducting wire pressure drop for connecting extension set and sensor is larger, works as lithium battery for sensor in actual use Voltage as low as to a certain degree when, sensor job insecurity or cisco unity malfunction due to electricity shortage can be caused, thus design This electric power management circuit, effect are that unstable cell output voltage is converted to stable DC5V power supplys output, improve biography The reliability of sense device working extends the use distance of sensor.Fuse F1 and zener diode T4 constitutes sensor electricity The protective effect of source output terminal mouth, power supply output short-circuit, static electricity on human body, external surge interference etc. are to being caused by preventing artificially System damages.

The data processing module includes chip U4, and 1 foot of chip U4 is connected with one end of capacitance C13, altogether end and intelligence The 3.3V power output ends VCC3.3V of energy power supply module is connected, and the other end ground connection of capacitance C13,7 feet of chip U4 connect respectively One end of one end and capacitance C8 of resistance R14, the other end ground connection of capacitance C8, the other end and the intelligent power supply module of resistance R14 3.3V power output ends VCC3.3V be connected, 13 feet of chip U4 respectively with 19 feet of chip U4,64 feet, 48 feet, 32 feet, electricity Hold one end of C9, one end of capacitance C10, capacitance C11 one end be connected with one end of capacitance C12, altogether end and intelligent power supply module 3.3V power output ends VCC3.3V be connected, the other end of capacitance C9 connect respectively the other end of capacitance C10, capacitance C11 it is another The other end of one end and capacitance C12, end ground connection, 60 feet of chip U4 distinguish the collection of one end and triode Q5 of connecting resistance R20 altogether Electrode, the other end ground connection of resistance R20,1 foot of one end and port P1 of the emitter difference connecting resistance R23 of triode Q5, altogether End is connected with the 3.3V power output ends VCC3.3V of intelligent power supply module, and the other end of resistance R23 connects triode Q5's respectively One end of base stage and resistance R22, the other end of resistance R22 are connected with 5 feet of port P1,2 feet of port P1 and the 42 of chip U4 Foot is connected, and 3 feet of port P1 are connected with 43 feet of chip U4,4 ground connection of port P1,7 feet of port P1 and 49 feet of chip U4 It is connected, 8 feet of port P1 are connected with 46 feet of chip U4, and 5 feet of chip U4 meet one end and the capacitance C16 of crystal oscillator M2 respectively The other end of one end, capacitance C16 is connected with one end of capacitance C17, and end ground connection, the other end of capacitance C17 meet crystal oscillator M2 respectively altogether The other end and chip U4 6 feet；27 feet of chip U4 connect the base stage of triode Q9, the emitter of triode Q9 through resistance R39 Ground connection, collector are connected with sensor interface module, and 57 feet of chip U4 connect the base stage of triode Q10, three poles through resistance R40 The emitter of pipe Q9 is grounded, and collector is connected with sensor interface module；28 feet of chip U4 are grounded through resistance R17,31 feet, 47 feet, 63 feet, 18 feet, 12 foot earths；6 feet of charging manager U3 are connected with 2 feet of chip U4, charging manager U3 7 feet be connected with 3 feet of chip U4,14 feet and the connecing in working sensor power circuit of data processing module chips U4 Head VDDEN be connected.

As illustrated in figs. 2 through 8, it is 32 high-performance Cortex-M3 that data processing module, which is contained including chip U4, chip U4, The processor of kernel, subordinate machine system working power are all connected in the VCC output port of power source of intelligent power supply module, are chip U4 (data processor MCU) provides normal work power supply；In the ports VDDEN (14 foot) the control intelligent power supply module of chip U4 Power supply connected state, U2_TXD (16 foot), U2_RXD (17 foot), 485_RE (20 foot) and the 485_DE (15 foot) of chip U4 The function of four ports is respectively data transmission, data receiver, reception is all-round and transmission is enabled, this four ports are connected to logical The RS485 telecommunication circuits for believing module, for being communicated with storehouse temperature storehouse wet sensor.ADO (21 foot), the AD1 (22 foot) of chip U4 and AD2 (23 foot) port is that subordinate machine system supply voltage detects port, these three ports are connected to supply voltage detection module, Middle ADO Port detectings externally fed supply voltage, AD1 Port detecting booster circuit supply voltages, AD2 Port detectings boosting electricity Road output voltage, the OK (2 foot) of chip U4 and CH (3 foot) port are that lithium battery charged state detects port, and the wherein ports OK are Battery is full of signal, and the ports CH are battery just in charging signals；The U3_TXD (29 foot) of chip U4 and U3_RXD (30 foot) port It is connected to the wireless communication port of communication module, function is respectively data transmission and data receiver, and chip U4's passes through the two Port is communicated with radio communication circuit, for receiving order that measurement and control host computer is sent or being sent to measurement and control host computer collected Data.Corresponding 8 passways of extension set CHI [8..1] (45 feet of corresponding chip U4,55 feet, 58 feet, 62 feet, 33 feet, 37 feet, 40 Foot, 52 feet), for detecting the grain temperature sensor data connected on each channel.The confession in the corresponding each channels CHPWR [8..1] Electric power port, is used for giving Air conduct measurement power supply, CHL [8..1] (26 feet of corresponding chip U4,28 feet, 8 feet, 9 feet, 10 feet, 11 feet, 24 feet, 25 feet) to be used for control output end CH_OUT be low level, CHH [8..1] (41 feet of corresponding chip U4,50 feet, 56 feet, 59 feet, 34 feet, 36 feet, 38 feet, 53 feet) it is used for control output end CH_OUT as high level, input terminal CHI [8..1] is straight Output end CH_OUT is met in succession, it is made to be consistent, as shown in figure 5, providing the electricity of the grain temperature channel data acquisition in 2 channels Road schematic diagram.

Resistance R14 and capacitance C8 form electrification reset circuit, and in powered on moment, capacitance C8 both end voltages are 0V, resistance R14 Both end voltage is 3.3V, i.e., the RST pins of chip U4 (7 foot) are that low level chip U4 is in reset state, as the time prolongs Late, electric current charges to capacitance C8 through resistance R14, and charge increases in capacitance C8, and both end voltage is also gradually increasing, as capacitance C8 two When terminal voltage rises to 2V or more, chip U4 resets terminate, into starting state；The power supply of grain temperature sensor channel passes through control Be connected to the port chip U4 corresponding CHPWR [8..1] (1-8 totally 8 access ports, correspond to respectively chip U4 44 feet, 54 Foot, 27 feet, 57 feet, 61 feet, 35 feet, 39 feet, 51 feet), make corresponding triode ON or cut-off, power supply is provided for channel Power supply.

The ends VBAT (1 foot) of chip U4 and capacitance C13 form real-time clock power circuit, make real-time clock normal operation. Data processing module is communicated by RS485 with storehouse temperature storehouse wet sensor, the life sent using wireless communication receiver measurement and control host computer It enables or sends collected data to measurement and control host computer, detect subordinate machine system each section supply voltage, control 8 sensor passages Working condition, channel is powered, data processing；Resistance R39, triode Q9 and resistance R40, triode Q10 difference The level shifting circuit of sensor passage is constituted, data processing module controls sensor passage power work shape as needed State.

The sensor interface module includes 4 identical grain temperature channel data Acquisition Circuits, each grain temperature port number 2 grain temperature data acquisition channels are corresponded to according to Acquisition Circuit comprising PMOS tube U6B, U5B, U9A, U9B, triode Q3, Q6, Protector T2 and protection diode D6, protector T2 and protection diode D6 have identical two, the source electrode of PMOS tube U6B Connect respectively one end of capacitance C25, one end of capacitance C26, one end of resistance R26, the source electrode of PMOS tube U9B, resistance R28 one End, one end of resistance R16, the source electrode of PMOS tube U9A, one end of resistance R24, one end of resistance R27, resistance R11 one end With the source electrode of PMOS tube U6A terminates the VDD output port of power source of the working sensor power circuit altogether, PMOS tube U6B's Grid is connected with the other end of resistance R24, and a corresponding CHPWR [8..1] ports chip termination U4 (are respectively chip U4 altogether 44 feet, 54 feet, 27 feet, 57 feet, 61 feet, 35 feet, 39 feet, 51 feet), the drain electrode of PMOS tube U6B connects the collection of triode Q3 respectively Electrode, the other end of resistance R27, one end of resistance R19, one end of capacitance C23, first protector T2 one end and first The cathode of a protection diode D6 is held as output end CHx_OUT (be connected with corresponding out splice going splice CHx_OUT, wherein x altogether For 1-8, the output end in 8 channels is represented) and an input terminal CHI [8..1] corresponding with data processing module chips U4 Being connected is used as input terminal for port (being respectively 45 feet, 55 feet, 58 feet, 62 feet, 33 feet, 37 feet, 40 feet, 52 feet of chip U4), The other end of the grid connecting resistance R11 of PMOS tube U6A holds a CHH corresponding with data processing module chips U4 altogether Port [8..1] (being respectively 41 feet, 50 feet, 56 feet, 59 feet, 34 feet, 36 feet, 38 feet, 53 feet of chip U4) is connected, PMOS tube The other end of the drain electrode connecting resistance R19 of U6A, the base stage of triode Q3 meet data processing module chips U4 through resistance R32 and correspond to CHL [8..1] port 26 feet, 28 feet, 8 feet, 9 feet, 10 feet, 11 feet, 24 feet, 25 feet of chip U4 (be respectively), three The emitter of pole pipe Q3 meets the other end of capacitance C23, the other end of capacitance C25, the other end of capacitance C26, triode Q6 respectively Emitter, one end of capacitance C24, one end of second protector T2, the other end of first protector T2, second guarantor The other end of one end and first protection diode D6 of diode D6 is protected, altogether end ground connection, the grid connecting resistance of PMOS pipes U9A The other end of R16, an end CHH [8..1] port corresponding with data processing module chips U4 (is respectively chip U4's altogether 41 feet, 50 feet, 56 feet, 59 feet, 34 feet, 36 feet, 38 feet, 53 feet) it is connected, one end of the drain electrode connecting resistance R21 of PMOS tube U9A, The other end of resistance R21 connect respectively the drain electrode of PMOS tube U9B, the other end of resistance R28, the other end of capacitance C24, second The other end of the other end of protector T2 and second protection diode D6, altogether end (be connected with pair as output end CHx_OUT The out splice going splice CHx_OUT answered, wherein x are 1-8, represent the output end in 8 channels) and input terminal and data processing module in A corresponding CHI [8..1] ports chip U4 (respectively 45 feet of chip U4,55 feet, 58 feet, 62 feet, 33 feet, 37 feet, 40 Foot, 52 feet) being connected is used as input terminal, and the other end of the grid connecting resistance R26 of PMOS tube U9B holds corresponding with chip U4 one altogether A CHPWR [8..1] port (being respectively 44 feet, 54 feet, 27 feet, 57 feet, 61 feet, 35 feet, 39 feet, 51 feet of chip U4) phase Even, the base stage of triode Q6 connects a corresponding CHL [8..1] ports data processing module chips U4 (respectively through resistance R33 For 26 feet of chip U4,28 feet, 8 feet, 9 feet, 10 feet, 11 feet, 24 feet, 25 feet).

The sensor interface module further includes integrated wiring terminal module, integrated wiring terminal module include sensor and 1 foot and lithium battery charging management circuit of power switch port P4,8 access port P2, sensor and power switch port P4 Middle 220V power supplies firewire input terminal is connected, and 2 feet are connected with 220V power supplies zero curve input terminal in lithium battery charging management circuit, 6 feet Connect respectively 14 feet of sensor and power switch port P4, one end and 8 access port P2 of ESD protection device T6 2 feet, altogether 7 feet of end ground connection, sensor and power switch port P4 connect the 5V power supplys in lithium battery charging management circuit through fuse F3 and supply Electricity output end, in the 9 foot lithium battery charging management circuit of anode of the solar cell for supplying power in 8 foot lithium battery charging management circuits Solar cell for supplying power cathode, 10 feet connect the 3.7V lithium battery power supply output ends in lithium battery charging management circuit, 11 feet Connect the probe power feeder ear (system power supply interface PSW) in working sensor power circuit, 12 feet, 13 feet respectively with it is logical Believe that module is connected, 15 feet connect the other end of 1 foot and ESD protection device T6 of 8 access port P2 respectively, terminate sensor work altogether Make the VDD output port of power source of power circuit, the 3-10 feet of 8 access port P2 are electric with 4 grain temperature channel data acquisitions respectively The corresponding output end CHx_OUT in road (is connected with corresponding out splice going splice CHx_OUT, wherein x is 1-8, represents the defeated of 8 channels Outlet) it is connected, 13,14,15 feet of 8 access port P2 are connected with communication module respectively.

The protector T2 models PESD5V0L2BT；

The protection diode D6 models BAW56；

ESD protection device T6 is unidirectional patch TVS pipe；

As shown in figure 12, the grain temperature channel data Acquisition Circuit schematic diagram of 2 grain temperature data acquisition channels is provided, wherein

The port CHPWR [8..1] is respectively CH1_PWR and CH2_PWR, corresponds to 27 feet and 35 feet of chip U4 respectively；CHI The port [8..1] is respectively CH1_I and CH2_I, corresponds to the ports CHI1 and the ports CHI2 (33 feet and 37 feet) of chip U4 respectively； The port CHH [8..1] is respectively CH1_H and CH2_H, corresponds to the ports CHH1 and the ports CHH2 (34 feet and 36 of chip U4 respectively Foot)；Connector CHx_OUT is respectively CH1_OUT and CH2_OUT, is connected (8 with the corresponding ports of integrated wiring terminal module respectively The CH2 of the 3 foot CH1 and 4 feet of a access port P2)；The port CHL [8..1] is respectively CH1_L and CH2_L, corresponds to chip respectively The ports CHL1 of U4 and the ports CHL2 (24 feet and 25 feet)；This is the grain temperature channel Acquisition Circuit in 2 channels, other channels with This circuit is identical；

CHx_PWR connects P metal-oxide-semiconductor U6B grids with power vd D by R24, when input low level control PMOS pipes are led It is logical, so that output end CHx_OUT is connected with VDD and exports high level；CHxH connects P metal-oxide-semiconductor U6A grids with power vd D by R11, Control CHx_H output low and high levels carry out the state of control output end CHx_OUT.CHx_I is directly connected with output end CHx_OUT, The transition of output end CHx_OUT is identical as input terminal CHx_I；Input CHx_L passes through current-limiting resistance R32 and NPN triode Q3 bases Extremely it is connected, the collector of triode Q3 is directly connected with output end CHx_OUT, and emitter and the ground short circuit of triode Q3 pass through Notify the on and off of the low and high level control triode Q3 of input terminal CHx_L, whether control output end CHx_OUT is low Level.Output end CHx_OUT is output to port after being connected by filter capacitor C23, protector T2 and protection diode D6 CHx_OUT；Resistance R24, PMOS tube U6B form sensor passage power supply output control circuit, data processing module according to It needs to control working sensor power supply status；Resistance R11, PMOS tube U6A resistance, R32, triode Q3 form output state Control circuit, data processing module carry out control output end CHx_OUT states as needed.CHx_I directly with output end CHx_ OUT is connected, the status information for reading output end CHx_OUT.It is made of capacitance C23, protector T2 and protection diode D6 Digital output protector reduces static electricity on human body, external surge interference etc. and is impacted to system.

As shown in figure 13, PSW+ and PSW-port are connected to intelligent power supply module in integrated wiring terminal module, are extension set System power supply, sensor and power switch port P4 are sensor and power switch Wiring port, ESD protection device T6 therein It is grain temperature channel sensor connectivity port, two pole of voltage stabilizing for protecting interference of the internal circuit from electrostatic, 8 access port P2 Pipe T4 (TVS protective devices) is for protecting subordinate machine system power supply not by extraneous such as thunder and lightning interference.

Described protector T8, T3, T5 are unidirectional patch TVS pipe；

The buzzer U10 is the general active buzzers of 5V sold in the market；

RS_485 communication chips U5 is is sold general-purpose chip in the market.

As shown in the circuit diagram of Figure 14 communication modules, communication module includes the wireless telecommunications list based on ad hoc network function Member, the wet data transmission units of Cang Wencang and buzzer cue circuit, communication port P7 and P5 composition standard telecommunications modules interface electricity Road can connect a variety of communication modules, such as RS485 communication modules, 433 wireless communication modules and ethernet communication module etc.. Isolator safeguard measure improves data transmission stability to the RG1 feet of communication port P5；Wireless communication unit is an independent nothing Line telecommunication circuit, by U3_TXD in the chip U4 in USART interfaces (WL_RXD, WL_TXD pin) and subordinate machine system and U3_RXD connections (29,30 foot), wireless communication unit is mainly responsible for the foundation, connection and maintenance of wireless network, by wirelessly passing Contribute's host data is transmitted to data processing module, and the data that data processing module receives are sent to goes to be received by host in the air, Realize the logical biography function of the data of grain feelings detection subordinate machine system and respective host；

The wet data transmission unit in storehouse temperature storehouse uses RS485 telecommunication circuits, by RS_485 communication chips U5, capacitance C19, electricity Hinder R6, R8, R15, R18, protector T3, T5, T8 composition.Chip U4 supports 32 nodes, and resistance R6 and resistance R9 are respectively Upper and lower pull-up resistor, resistance R15 and resistance R18 are respectively current-limiting resistance, and protector T3, T5, T8 are ESD protectors, prevent from leading to The electrostatic come is conducted in letter bus to damage chip U5.

Buzzer cue circuit includes buzzer U10, resistance R25, NPN triode Q7 and capacitance C18.By data processing The port BEEP (4 foot) of module controls triode Q7 on or off, and whether control buzzer work, wire jumper J1, J2 into Row selects 3.3V power supplys or 5V power supplys.

The supply voltage detection module includes externally fed voltage detecting circuit, booster circuit supply voltage detection electricity Road and booster circuit output voltage detecting circuit, externally fed voltage detecting circuit include resistance R30, R31, and the one of resistance R30 End is connected with one end of resistance R31, altogether 21 feet of terminating data processing module chips U4, another termination lithium electricity of resistance R30 The other end of power supply the out splice going splice SDC, resistance R31 of pond charge management circuit are grounded；Booster circuit supply voltage detection circuit Including resistance R7, R13, one end of resistance R7 is connected with one end of resistance R13, total terminating data processing module chips U4's 22 feet, the test point VEE of the booster circuit supply voltage detection of another termination working sensor power circuit of resistance R7, electricity Hinder the other end ground connection of R13；Booster circuit output voltage detecting circuit includes resistance R4, R10, one end of resistance R4 and resistance One end of R10 is connected, altogether 23 feet of terminating data processing module chips U4, another termination working sensor electricity of resistance R4 The other end of VDD the output port of power source VDD, resistance R10 of source circuit are grounded.

Supply voltage detection module as seen in figs. 15-17 includes externally fed voltage detecting circuit, booster circuit power supply Voltage detecting circuit and booster circuit output voltage detecting circuit.

Externally fed voltage detecting circuit is made of resistance R30, R31, and resistance R30 first ends are for connecting lithium battery charging The voltage input end for managing circuit, connects after then being connect with resistance R31 with ground, resistance R30 and R31 connector intermediate contact Outer power voltage detection data input terminal AD0 (21 foot) for connecting data processing module.

The detection of booster circuit supply voltage includes resistance R7, R13, and resistance R7 first ends are used for the control source of booster circuit End, connects after then being connect with resistance R13 with ground, and resistance R7 and R13 connector intermediate contact is for connecting data processing module Booster circuit supply voltage detection data input terminal AD1 (22 foot).

The detection of booster circuit output voltage includes resistance R4, R10, and resistance R4 first ends are defeated for connecting booster circuit voltage Enter end, connect with ground after then being connect with resistance R10, resistance R4 and R10 connector intermediate contact is for connecting data processing mould The booster circuit output voltage detection data input terminal AD2 (23 foot) of block.

Compared with prior art, the present invention has the following advantages：

4, adaptable：

Claims

1. a kind of support to power and the grain feelings of communication mode detection extension set, including extension set shell and the circuit in shell more Plate is equipped with control circuit on circuit board, which is characterized in that the control circuit includes:

Intelligent power supply module：For providing 3.3V 5V working powers；

Sensor interface module：Including Temperature Humidity Sensor interface and grain temperature sensor interface, for connecting Temperature Humidity Sensor With grain temperature sensor, the wet data in storehouse temperature storehouse and grain temperature data are provided for extension set；

Communication module：For completing receiving host order and uploading collected data of the Temperature and Humidity module and grain temperature data；

Supply voltage detection module：For the detection of circuit supply voltage and output voltage detection；

Data processing module：For the processing of grain temperature gathered data, the wet detection data processing of Cang Wencang, lithium battery charging detection, inspection Survey subordinate machine system power supply monitoring；

The data processing module is examined with intelligent power supply module, sensor interface module, communication module and supply voltage respectively Module is surveyed to be connected；

The intelligent power supply module includes that the lithium battery charging management circuit being connected respectively with data processing module, power supply are automatic Switching circuit and working sensor power circuit；

The lithium battery charging management circuit includes charging manager U3, and 1 foot of charging manager U3 connects chip U11's respectively Connect, the cathode of solar cell for supplying power, one end of discharge tube T7, discharge tube T1 one end, have electrode capacitance C1 cathode, fill 3 feet of electric manager U3, one end of resistance R12, the cathode for having electrode capacitance C6 and 3.7V lithium batteries port 2 feet, altogether end ground connection, 2 feet of charging manager U3 are connected with the other end of resistance R12, and 4 feet of electric manager U3 meet the cathode of diode D2, two respectively The cathode of pole pipe D1 and the anode for having electrode capacitance C1, altogether end be connected with the anode of power supply out splice going splice SDC, diode D2 respectively with The 5V power supplys output pin of chip U11 is connected with the other end of discharge tube T7, and as 5V power supply power supply output ends, diode D1 is just Pole connects the anode of solar cell for supplying power and the other end of discharge tube T1 respectively, as solar cell for supplying power output end, charging 5 feet of manager U3 connect 1 foot of 8 feet of charging manager U3, the anode for having electrode capacitance C6 and 3.7V lithium batteries port respectively, make For 3.7V lithium battery power supply output ends, 6 feet, 7 feet of charging manager U3 are connected with data processing module respectively, chip U11's Firewire input terminal distinguishes one end of one end and fuse F2 of connecting resistance RM, and the other end of fuse F2 is that 220V power supply firewires are defeated Enter end, one end of the other end and resistance RT1 of the zero curve input terminal difference connecting resistance RM of chip U11, the other end of resistance RT1 is 220V power supply zero curve input terminals.

2. support according to claim 1 is powered more and the grain feelings of communication mode detect extension set, which is characterized in that the electricity Source automatic switch-over circuit includes three terminal regulator U2, PMOS tube U8A, U8B and triode Q1, Q8,2 feet point of three terminal regulator U2 It is not connected to the anode of electrode capacitance C2, the source electrode of PMOS tube U8B, the cathode of diode D5, the emitter of triode Q1, resistance R35 One end and PMOS tube U8A source electrode, altogether end be used as VCC output port of power source, there is the cathode of electrode capacitance C2 to be connected to respectively extremely electric Hold one end of the cathode of C7,1 foot of three terminal regulator U2, one end of resistance R37, the emitter of triode Q8, resistance R34, altogether End ground connection, the drain electrode of PMOS tube U8B are connected with the anode of diode D5, and the grid of PMOS tube U8B connects the collection of triode Q1 respectively The other end of electrode and resistance R37, the base stage of triode Q1 connect the collector and resistance R36 of triode Q8 through resistance R38 respectively One end, the grid of the other end and PMOS tube U8A of the other end difference connecting resistance R35 of resistance R36, the drain electrode of PMOS tube U8A One end of the cathode and resistance R42 of controllable accurate source of stable pressure Q2 is connect respectively, and end is managed with fulgurite in lithium battery charging management circuit altogether 4 feet of device U3 are connected, one end of the anode difference connecting resistance R41 of controllable accurate source of stable pressure Q2, the other end and resistance of resistance R34 One end of R43, the reference pole of the other end and controllable accurate source of stable pressure Q2 of the other end difference connecting resistance R42 of resistance R43, resistance The base stage of the other end and triode Q8 of R41,3 feet of three terminal regulator U2 are connected with there is the anode of electrode capacitance C7, hold conduct altogether 3.3V power output ends VCC3.3V；

The working sensor power circuit includes booster U7, PMOS tube U1A, U1B, and 1 foot of booster U7 connects two poles respectively The anode of pipe D3 and one end of inductance L1, the cathode of diode D3 respectively one end of connecting resistance R2, have electrode capacitance C15 anode, One end of one end and fuse F1 of capacitance C21, the other end of resistance R2 connect respectively booster U7 3 feet and resistance R3 one End, the other end of resistance R3 connect respectively the anode of zener diode T4, capacitance C21 the other end, have electrode capacitance C15 cathode, The transmitting of one end of resistance R1,2 feet of booster U7, the cathode for having electrode capacitance C3, one end and triode Q4 for having electrode capacitance C14 Pole holds ground connection, the other end of fuse F1 to be connected with the cathode of zener diode T4 altogether, and end is used as VDD output port of power source altogether, The other end of inductance L1 connects 4 feet, 5 feet, the anode for having electrode capacitance C3, one end of capacitance C14 and the PMOS tube of booster U7 respectively The test point VEE detected as booster circuit supply voltage, the source electrode difference connecting resistance R8 of PMOS tube U1A are held in the drain electrode of U1A altogether One end, diode D7 cathode and PMOS tube U1B source electrode, hold PMOS tube U8B in VFF and power supply automatic switchover circuit altogether Drain electrode, diode D5 the total end of anode be connected, the other end of resistance R8 connects the grid and triode Q4 of PMOS tube U1A respectively Collector, the grid of one end and PMOS tube U1B of the anode difference connecting resistance R29 of diode D7, holds PWR_5V and lithium battery altogether The anode of diode D2,1 foot of 5V power ports P9, the total end of discharge tube T7 are connected in charge management circuit, PMOS tube U1B's Drain electrode is used as probe power feeder ear (being connected with system power supply interface PSW), one end of the base stage and resistance R5 of triode Q4 It is connected, the other end of resistance R5 is equipped with connector VDDEN.

3. support according to claim 2 is powered more and the grain feelings of communication mode detect extension set, which is characterized in that described Data processing module includes chip U4, and 1 foot of chip U4 is connected with one end of capacitance C13, altogether end and intelligent power supply module 3.3V power output ends VCC3.3V is connected, the other end ground connection of capacitance C13, one end of the 7 feet difference connecting resistance R14 of chip U4 It is grounded with the other end of one end of capacitance C8, capacitance C8, the other end of resistance R14 is exported with the 3.3V power supplys of intelligent power supply module Hold VCC3.3V to be connected, 13 feet of chip U4 respectively with 19 feet of chip U4,64 feet, 48 feet, 32 feet, one end of capacitance C9, capacitance One end of C10, one end of capacitance C11 are connected with one end of capacitance C12, altogether the 3.3V power output ends at end and intelligent power supply module VCC3.3V is connected, and the other end of capacitance C9 connects the another of the other end of capacitance C10, the other end of capacitance C11 and capacitance C12 respectively Ground connection is held in one end altogether, and the collector of one end and triode Q5 of the 60 feet difference connecting resistance R20 of chip U4, resistance R20's is another End ground connection, 1 foot of one end and port P1 of the emitter difference connecting resistance R23 of triode Q5, holds and intelligent power supply module altogether 3.3V power output ends VCC3.3V is connected, and the other end of resistance R23 connects one end of the base stage and resistance R22 of triode Q5 respectively, The other end of resistance R22 is connected with 5 feet of port P1, and 2 feet of port P1 are connected with 42 feet of chip U4,3 feet of port P1 with 43 feet of chip U4 are connected, and 4 ground connection of port P1,7 feet of port P1 are connected with 49 feet of chip U4,8 feet and core of port P1 46 feet of piece U4 are connected, and 5 feet of chip U4 connect one end of one end and capacitance C16 of crystal oscillator M2 respectively, the other end of capacitance C16 with One end of capacitance C17 is connected, and end ground connection, the other end of capacitance C17 connect the other end of crystal oscillator M2 and 6 feet of chip U4 respectively altogether； 27 feet of chip U4 connect the base stage of triode Q9, the emitter ground connection of triode Q9, collector and sensor interface through resistance R39 Module is connected, and 57 feet of chip U4 connect the base stage of triode Q10 through resistance R40, the emitter ground connection of triode Q9, collector with Sensor interface module is connected；28 feet of chip U4 are grounded through resistance R17, and 31 feet, 47 feet, 63 feet, 18 feet, 12 feet simultaneously couple Ground；6 feet of charging manager U3 are connected with 2 feet of chip U4, and 7 feet of charging manager U3 are connected with 3 feet of chip U4, data 14 feet of processing module chips U4 and the connector VDDEN in working sensor power circuit be connected.

4. support according to claim 3 is powered more and the grain feelings of communication mode detect extension set, which is characterized in that described Sensor interface module includes 4 identical grain temperature channel data Acquisition Circuits, and each grain temperature channel data Acquisition Circuit corresponds to 2 A grain temperature data acquisition channel comprising PMOS tube U6B, U5B, U9A, U9B, triode Q3, Q6, two poles protector T2 and protection Pipe D6, protector T2 and protection diode D6 have identical two, the source electrode of PMOS tube U6B connect respectively one end of capacitance C25, One end of capacitance C26, one end of resistance R26, the source electrode of PMOS tube U9B, one end of resistance R28, one end of resistance R16, PMOS The source electrode of pipe U9A, one end of resistance R24, one end of resistance R27, resistance R11 one end and, the source electrode of PMOS tube U6A, altogether hold Connect the VDD output port of power source of the working sensor power circuit, the grid of PMOS tube U6B and the other end phase of resistance R24 Even, a corresponding CHPWR [8..1] ports chip termination U4, the drain electrode of PMOS tube U6B connect the current collection of triode Q3 respectively altogether Pole, the other end of resistance R27, one end of resistance R19, one end of capacitance C23, one end of first protector T2 and first guarantor The cathode of diode D6 is protected, end is used as output end CHx_OUT and input terminal corresponding with data processing module chips U4 one altogether A CHI [8..1] port, which is connected, is used as input terminal, the other end of the grid connecting resistance R11 of PMOS tube U6A, end and data processing altogether A corresponding CHH [8..1] ports module chips U4 are connected, the other end of the drain electrode connecting resistance R19 of PMOS tube U6A, three poles The base stage of pipe Q3 connects a corresponding CHL [8..1] ports data processing module chips U4, the hair of triode Q3 through resistance R32 Emitter-base bandgap grading connects the other end of capacitance C23, the other end of capacitance C25, the other end of capacitance C26, the emitter of triode Q6, electricity respectively Hold one end of C24, one end of second protector T2, the other end of first protector T2, second protection diode D6 The other end of one end and first protection diode D6, end ground connection, the other end of the grid connecting resistance R16 of PMOS tube U9A are total altogether An end CHH [8..1] port corresponding with data processing module chips U4 is connected, the drain electrode connecting resistance R21 of PMOS tube U9A One end, the other end of resistance R21 connect respectively the drain electrode of PMOS tube U9B, the other end of resistance R28, capacitance C24 the other end, The other end of the other end and second protection diode D6 of second protector T2, end is as output end CHx_OUT and defeated altogether Enter an end CHI [8..1] port corresponding with data processing module chips U4 to be connected as input terminal, the grid of PMOS tube U9B The other end of pole connecting resistance R26, an end CHPWR [8..1] port corresponding with chip U4 is connected altogether, the base stage of triode Q6 A corresponding CHL [8..1] ports data processing module chips U4 are connect through resistance R33.

5. support according to claim 4 is powered more and the grain feelings of communication mode detect extension set, which is characterized in that the biography Sensor interface module further includes integrated wiring terminal module, and integrated wiring terminal module includes sensor and power switch port 1 foot of P4,8 access port P2, sensor and power switch port P4 are with 220V in lithium battery charging management circuit for electrical fire Line input terminal is connected, and 2 feet are connected with 220V power supplies zero curve input terminal in lithium battery charging management circuit, and 6 feet connect sensor respectively With 2 feet of one end and 8 access port P2 of 14 feet of power switch port P4, ESD protection device T6, altogether end ground connection, sensor With 7 feet of power switch port P4 the 5V power supply power supply output ends in lithium battery charging management circuit, 8 foot lithiums are connect through fuse F3 Solar cell in the 9 foot lithium battery charging management circuit of anode of solar cell for supplying power in battery charging management circuit supplies The cathode of electricity, 10 feet connect the 3.7V lithium battery power supply output ends in lithium battery charging management circuit, and 11 feet connect working sensor electricity Probe power feeder ear in source circuit, 12 feet, 13 feet are connected with communication module respectively, and 15 feet connect 8 access ports respectively The other end of 1 foot and ESD protection device T6 of P2 terminates the VDD output port of power source of working sensor power circuit altogether, and 8 logical Output end CHx_OUT's 3-10 feet of road port P2 corresponding with 4 grain temperature channel data Acquisition Circuits is connected respectively, 8 channels 13,14,15 feet of port P2 are connected with communication module respectively.

6. support according to claim 5 is powered more and the grain feelings of communication mode detect extension set, which is characterized in that described Communication module includes buzzer U10, RS_485 communication chip U5, communication port P7 and communication port P5, the power supply of buzzer U10 Input terminal is connected with one end of capacitance C18 and power supply automatic switchover circuit VCC output port of power source respectively, the letter of buzzer U10 Number input terminal is connected with the collector of triode Q7, and the base stage of triode Q7 meets data processing module chips U4 through resistance R25 4 feet, the other end of the emitter capacity C18 of triode Q7 is connected, altogether end ground connection, the 1 foot difference of RS_485 communication chips U5 Be connected with the cathode of 17 feet of data processing module chips U4 and light emitting diode DS2,2 feet of RS_485 communication chips U5 with 20 feet of data processing module chips U4 are connected, and 3 feet of RS_485 communication chips U5 are with data processing module chips U4's 15 feet are connected, 4 feet of RS_485 communication chips U5 respectively with 16 feet and light emitting diode DS1 of data processing module chips U4 Cathode be connected, the anode of light emitting diode the DS1 anode of sending and receiving optical diode DS2 and one end of resistance R44 respectively, RS_485 5 feet of communication chip U5 connect respectively one end of capacitance C19, one end of resistance R6, one end of protector T3, protector T5 one Ground connection is held at end altogether, and one end of one end and resistance R15 of the 6 feet difference connecting resistance R9 of RS_485 communication chips U5, resistance R9's is another One end is connected with the other end of resistance R44, altogether end and the 3.3V power output end VCC3.3V phases in power supply automatic switchover circuit Even, the other end of one end and protector T5 of the other end difference connection protector T8 of resistance R15, terminates integrated wiring Terminals Die altogether 13 feet of sensor and power switch port P4 in block, the other end of the 7 feet difference connecting resistance R6 of RS_485 communication chips U5 and One end of resistance R18, the other end of the other end and protector T3 of the other end difference connection protector T8 of resistance R18, terminates altogether 12 feet of sensor and power switch port P4 in integrated wiring terminal module, 8 feet and the capacitance C19 of RS_485 communication chips U5 The other end be connected, altogether end be connected with the 3.3V power output ends VCC3.3V in power supply automatic switchover circuit, communication port P7's 1 foot is grounded, and 2 feet connect one end of one end of wire jumper J1, one end of wire jumper J2 and capacitance C20, the other end and the electricity of wire jumper J1 respectively 3.3V power output ends VCC3.3V in the automatic switch-over circuit of source is connected, the other end and the lithium battery Charge Management electricity of wire jumper J2 5V power supply power supply output ends in road are connected, the other end ground connection of capacitance C20,3 feet of communication port P7 respectively with light-emitting diodes The cathode of pipe DS4 is connected with 29 feet of data processing module chips U4,4 feet of communication port P7 respectively with light emitting diode The cathode of DS3 is connected with 30 feet of data processing module chips U4, and the anode of light emitting diode DS3 connects Light-Emitting Diode respectively The anode of DS4 and one end of resistance R45, the 3.3V power output ends in the other end and power supply automatic switchover circuit of resistance R45 VCC3.3V is connected, the 5 feet ground connection of communication port P7；1 foot of communication port P5 connects 8 tunnel ends in integrated wiring terminal module 13 feet of mouth P2,2 feet of communication port P5 meet 14 feet of 8 access port P2 in integrated wiring terminal module, communication port P5 3 feet connect 15 feet of 8 access port P2 in integrated wiring terminal module.

7. support according to claim 6 is powered more and the grain feelings of communication mode detect extension set, which is characterized in that described Supply voltage detection module includes that externally fed voltage detecting circuit, booster circuit supply voltage detection circuit and booster circuit are defeated Go out voltage detecting circuit, externally fed voltage detecting circuit includes resistance R30, R31, one end of resistance R30 and the one of resistance R31 End is connected, altogether 21 feet of terminating data processing module chips U4, another termination lithium battery charging management circuit of resistance R30 The other end of power supply out splice going splice SDC, resistance R31 are grounded；Booster circuit supply voltage detection circuit includes resistance R7, R13, electricity One end of resistance R7 is connected with one end of resistance R13, altogether 22 feet of terminating data processing module chips U4, the other end of resistance R7 Connect the test point VEE of the booster circuit supply voltage detection of working sensor power circuit, the other end ground connection of resistance R13；It rises Volt circuit output voltage detecting circuit includes resistance R4, R10, and one end of resistance R4 is connected with one end of resistance R10, terminates number altogether According to 23 feet of processing module chips U4, the VDD output port of power source of another termination working sensor power circuit of resistance R4 The other end of VDD, resistance R10 are grounded.