CN108574333A - The intelligent power supply module of extension set is detected for grain feelings - Google Patents

The intelligent power supply module of extension set is detected for grain feelings Download PDF

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Publication number
CN108574333A
CN108574333A CN201810859506.6A CN201810859506A CN108574333A CN 108574333 A CN108574333 A CN 108574333A CN 201810859506 A CN201810859506 A CN 201810859506A CN 108574333 A CN108574333 A CN 108574333A
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CN
China
Prior art keywords
feet
resistance
capacitance
pmos tube
port
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Withdrawn
Application number
CN201810859506.6A
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Chinese (zh)
Inventor
刘文敬
朱鹏飞
王志民
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Zhengzhou Banghai Intelligent Technology Co ltd
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Source Zhengzhou Powerise Control Co Ltd
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Priority to CN201810859506.6A priority Critical patent/CN108574333A/en
Publication of CN108574333A publication Critical patent/CN108574333A/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00302—Overcharge protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

Abstract

The present invention relates to the intelligent power supply modules that extension set is detected for grain feelings, technical solution is, include lithium battery charging management circuit, power supply automatic switchover circuit and the working sensor power circuit of circuit board and setting on circuit boards, the lithium battery charging management circuit includes charging manager U3, and power supply automatic switchover circuit includes three terminal regulator U2, PMOS tube U8A, U8B and triode Q1, Q8；Working sensor power circuit includes booster U7, PMOS tube U1A, U1B, and the present invention is adaptable, the use of solar energy is that whole system and working sensor are powered, makes full use of resource, reduce energy waste；Extend lithium battery service life, scheme is supplied using solar energy and lithium battery modular power supply, effectively reduces the charge and discharge number of lithium battery, extend the service life of lithium battery, improve solar energy utilization ratio, it is lithium battery usage time to extend no light, energy utilization rate is high, and service life is long, low in energy consumption.

Description

The intelligent power supply module of extension set is detected for grain feelings
Technical field
The present invention relates to grain storage detection technique field, especially a kind of intelligent power supply mould for grain feelings detection extension set Block.
Background technology
By taking the grain information monitoring system in grain storage industry as an example, existing grain feelings detection extension set is in practical applications Shortcoming is as follows：
1, communication mode is inconvenient：Node connectedness communication mode, extension set and master are used when common detection extension set wireless telecommunications Communication between machine must be provided with routed path, such as have A, B, tri- network nodes of C, host A, if host is wanted to obtain C point datas, it is necessary to path as A-B-C is set in advance, this communication mode setting trouble, once and some node Equipment breaks down, and will be unable to communicate with remaining associated equipment of its path, needs to reset wireless communication after more exchange device , flexibility is poor for diameter；
2, communication distance is limited：In the same environment, due to the use of be that network node mode wirelessly communicates, if point Machine and host are apart from too far, and signal of communication receives bad, communication abnormality between leading to node；
3, poor anti jamming capability：When PERCOM peripheral communication node sends failure or the generation interference of some node signal, transmission number According to can be abnormal；
4, environmental suitability is poor：Entire power supply system only has two kinds of solar panels and battery, and solar panel cannot obtain When enough to illumination, battery capacity is again limited, and system power supply, which goes wrong, to be made entirely to detect extension set and can not work；
5, energy utilization rate is low：Solar panels are generally 0.5W or so using drop offset plate, power, after long-time use by It is influenced in environment material, solar panel working efficiency reduces, and light transmittance is low, is reduced to the transfer efficiency of solar energy；
6, service life is short：One factor is that the material that the solar panels of current detection extension set use is that drop offset plate uses year It is limited to 3 years, another factor is that the power supply of whole system is charged the battery by solar energy, and then battery is supplied to remaining equipment Electricity shorten the service life of battery during battery can be often in charging, electric discharge in the extension set course of work；
7, power consumption is high：Grain inspection system need not give grain temperature sensor to power, only always during normal use System can just power when needing to acquire grain temperature, so substantially 30 points of the time of every grain feelings detection extension set real work Clock is enough, and such 98% time is in fact all in off working state.Existing grain feelings detection product is to be always maintained at system electricity Source powers, and which results in the significant wastage of the energy, power consumption is also relatively high.
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 is just to provide a kind of easy to operate, suitable It should be able to power be strong, low energy consumption, the intelligent power supply module with long service life for grain feelings detection extension set.
The technical solution that the present invention solves is：
A kind of intelligent power supply module for grain feelings detection extension set, the intelligent power supply module include circuit board and are arranged in electricity Lithium battery charging management circuit, power supply automatic switchover circuit on the plate of road and working sensor power circuit, the lithium battery Charge management circuit includes charging manager U3, and 1 foot of charging manager U3 meets 2 feet, the 5V of solar cell port P2 respectively 2 feet of power port P9, one end of discharge tube T7, one end of discharge tube T1, the cathode for having electrode capacitance C1, charging manager U3 3 feet (grounding leg), one end of resistance R12, the cathode and 3.7V lithium batteries port that have electrode capacitance C6 2 feet, end ground connection, fills altogether 2 feet of electric 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 1 foot of 5V power ports P9, the other end of discharge tube T7 are connected, and (5V power connections are connected with as 5V power supply power supplies output end VCC5V), the anode of diode D1 connects the other end of 1 foot and discharge tube T1 of solar cell port P2 respectively, as solar energy Battery powered output end, 5 feet of charging manager U3 connect respectively 8 feet of charging manager U3, have electrode capacitance C6 anode and 1 foot of 3.7V lithium batteries port, as 3.7V lithium battery power supplies output end (being connected with 3.7V lithium batteries connector BAT+)；
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 anode difference connecting resistance R41 of controllable accurate source of stable pressure Q2, the other end of resistance R34 and One end of resistance 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, The base stage of the other end and triode Q8 of resistance R41,3 feet (output pin) of three terminal regulator U2 and the anode for having electrode capacitance C7 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 that electrode capacitance C15's is negative Pole, one end of resistance R1, booster U7 2 feet, have electrode capacitance C3 cathode, have electrode capacitance C14 one end and triode Q4 Emitter holds ground connection, the other end of fuse F1 to be connected with the cathode of zener diode T4 altogether, and end is as the output of VDD power supplys altogether 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 electrode capacitance respectively The test point detected as booster circuit supply voltage is held in the drain electrode of the anode of C3, one end and PMOS tube U1A of capacitance C14 altogether VEE (is connected with booster circuit supply voltage detection tabs VEE), one end of the source electrode difference connecting resistance R8 of PMOS tube U1A, two The source electrode of the cathode and PMOS tube U1B of pole pipe D7 holds VFF and the drain electrode of PMOS tube U8B, two poles in power supply automatic switchover circuit altogether The total end of the anode of pipe D5 is connected, and the other end of resistance R8 connects the collector of the grid and triode Q4 of PMOS tube U1A respectively, and two The grid of one end and PMOS tube U1B of the anode difference connecting resistance R29 of pole pipe D7, holds PWR_5V and lithium battery Charge Management electricity altogether The anode of diode D2,1 foot of 5V power ports P9, the total end of discharge tube T7 are connected in road, and (drain electrode of PMOS tube U1B is (even System power supply interface PSW is connected to as probe power feeder ear), the base stage of triode Q4 is connected with one end of resistance R5, electricity The other end for hindering R5 is equipped with connector VDDEN.
The present invention has technique effect beneficial below：
1, adaptable：It is system power supply that lithium battery is used in intensity of illumination deficiency, is only opening acquisition grain temperature When operation, to be powered for grain temperature sensor using lithium battery, other times close power supply, reduce battery loss, when sunny, It is charged for lithium battery using solar energy, and the use of solar energy is that whole system and working sensor are powered, made full use of resource, subtract Few energy waste；
2, extend lithium battery service life：Scheme, environmental suitability are supplied using solar energy and lithium battery modular power supply By force, intelligent power supply module uses intelligent electric power management mechanism, effectively reduces the charge and discharge number of lithium battery, extends making for lithium battery With the service life, solar energy utilization ratio is improved, it is lithium battery usage time to extend no light, and energy utilization rate is high, and service life is long, work( It consumes low.
Description of the drawings
Fig. 1-3 is the circuit diagram of the present invention；
Wherein Fig. 1 is lithium battery charging management circuit schematic diagram；
Fig. 2 power supply automatic switchover circuit schematic diagrams：
Fig. 3 working sensor power circuit principle figures.
Fig. 4 is the circuit frame schematic diagram of use state of the present invention.
Fig. 5-11 is the circuit diagram of the data processing module of the present invention.
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 the integral module schematic diagram of use state 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, the present invention includes lithium battery charging management circuit, the electricity of circuit board and setting on circuit boards Source automatic switch-over circuit and working sensor power circuit, the lithium battery charging management circuit include charging manager U3, 1 foot of charging manager U3 connect respectively 2 feet of solar cell port P2,2 feet of 5V power ports P9, discharge tube T7 one End, one end of discharge tube T1, the cathode for having electrode capacitance C1,3 feet (grounding leg) of charging manager U3, resistance R12 one end, have 2 feet of the cathode and 3.7V lithium batteries port of electrode capacitance C6, end ground connection, 2 feet of charging manager U3 are another with resistance R12's altogether End is connected, 4 feet of electric manager U3 connect respectively the cathode of diode D2, diode D1 cathode and have the anode of electrode capacitance C1, Altogether end be connected with power supply out splice going splice SDC, diode D2 anode respectively with 1 foot of 5V power ports P9, discharge tube T7 it is another One end is connected, and as 5V power supply power supplies output end (being connected with 5V power connection VCC5V), the anode of diode D1 connects the sun respectively Can battery port P2 1 foot and discharge tube T1 the other end, as solar cell for supplying power output end, the 5 of charging manager U3 Foot connects 1 foot of 8 feet of charging manager U3, the anode for having electrode capacitance C6 and 3.7V lithium batteries port respectively, as 3.7V lithium electricity Pond power supply output end (being connected with 3.7V lithium batteries connector BAT+)；
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 anode difference connecting resistance R41 of controllable accurate source of stable pressure Q2, the other end of resistance R34 and One end of resistance 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, The base stage of the other end and triode Q8 of resistance R41,3 feet (output pin) of three terminal regulator U2 and the anode for having electrode capacitance C7 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 that electrode capacitance C15's is negative Pole, one end of resistance R1, booster U7 2 feet, have electrode capacitance C3 cathode, have electrode capacitance C14 one end and triode Q4 Emitter holds ground connection, the other end of fuse F1 to be connected with the cathode of zener diode T4 altogether, and end is as the output of VDD power supplys altogether 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 electrode capacitance respectively The test point detected as booster circuit supply voltage is held in the drain electrode of the anode of C3, one end and PMOS tube U1A of capacitance C14 altogether VEE (is connected with booster circuit supply voltage detection tabs VEE), one end of the source electrode difference connecting resistance R8 of PMOS tube U1A, two The source electrode of the cathode and PMOS tube U1B of pole pipe D7 holds VFF and the drain electrode of PMOS tube U8B, two poles in power supply automatic switchover circuit altogether The total end of the anode of pipe D5 is connected, and the other end of resistance R8 connects the collector of the grid and triode Q4 of PMOS tube U1A respectively, and two The grid of one end and PMOS tube U1B of the anode difference connecting resistance R29 of pole pipe D7, holds PWR_5V and lithium battery Charge Management electricity altogether The anode of diode D2,1 foot of 5V power ports P9, the total end of discharge tube T7 are connected in road, and (drain electrode of PMOS tube U1B is (even System power supply interface PSW is connected to as probe power feeder ear), the base stage of triode Q4 is connected with one end of resistance R5, electricity The other end for hindering R5 is equipped with connector VDDEN.
Lithium battery charging management chip U3 models 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 1, the power supply in lithium battery charging management circuit can be inputted or be selected too using external 5V Positive energy solar panel power supply.Lithium battery charging management circuit includes the 5V power ports and solar panel being connected with 5V power supplys Connected solar cell port, the 3.7V lithium batteries port being connected with lithium battery BAT, discharge tube T1, T7, diode D1, D2, there are electrode capacitance C1, C6 (as filter capacitor) and charging manager U3；Discharge tube T1 and T7 are used for surge protection, diode For D1 and D2 for anti-reverse, circuit power input can be selected as solar energy or 5V power supply power supplies, such as solar-powered For, 4 feet for protecting circuit that solar powered end is connected to charging manager U3 are made up of diode D1 and discharge tube T1 (VIN) and 3 feet (GND), by there is electrode capacitance C6 to charge to lithium battery, charging manager U3's just exports in charging status signal End CH pins (7 foot) and fully charged status signal output OK pins (6 foot) are separately connected the 3 of data processing module chips U4 Foot and 2 feet are connected.The cathode of diode Dl and D2 are also connected with solar panel power supply out splice going splice (SDC connectors), 5V inputs Power supply is 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, capacitance C6 forms lithium battery charging circuit, and suitable charging modes are provided for lithium battery；This circuit is that system work increases a kind of confession Electric mode improves system environments adaptability, enhances system job stability and safety.Diode D1, D2, discharge tube T1, T7 provides protective effect for lithium battery charging input end mouth, reduces static electricity on human body, external surge interference etc. and is impacted to system.
As shown in Fig. 2, power supply automatic switchover circuit includes resistance R34, R35, R36, R38, R41, R42, R43, controllable essence Close source of stable pressure Q2, PMOS tube U8A, U8B, triode Q8, Q1, diode D5, three terminal regulator U2, the wherein leakage of PMOS tube U8A The total end SDC of pole, the cathode of controllable accurate source of stable pressure Q2 and resistance R42 and electric manager U3 in lithium battery charging management circuit 4 feet are connected, and are inputted as sun-generated electric power, only when total end SDC is higher than 4.9V, pass through resistance R42 and R43, controllable accurate Source of stable pressure Q2, triode Q8 and Q1, PMOS tube U8A and U8B constitute power input selector, PMOS tube U8A conductings at this time and U8B It is not turned on, sun-generated electric power is by diode D5 and has electrode capacitance C7 to provide input power to three terminal regulator U2, works as solar energy Brownout, PMOS tube U8A is not turned on, PMOS pipes U8B is connected, and power input selector selects battery powered, PMOS tube at this time The drain electrode of U8B, the positive total end VFF of diode D5 are by there is the ends VIN of electrode capacitance C7 and three terminal regulator U2 (2 foot) phase Even.Wherein the parasitic diode of PMOS tube U8A and U8B is backward dioded, with normal diode on the contrary, to prevent battery Electric current charges the battery by diode when power supply, and lithium battery is caused to overshoot, this is an innovation and advantage of this product, three ends Voltage-stablizer U2 is that the switching of system power supply functional mode is realized in system work power supply by there is electrode capacitance C7 to export 3.3V voltages.
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 controlled using external according to power supply gate state Input power SDC uses battery VFF with diode D5, PMOS tube U8B as three terminal regulator U2 prime input powers； Capacitance C2, three terminal regulator U2, capacitance C7 constitute working power circuit, and normal work power supply is provided for data processing module；This Circuit meeting intelligent selection uses external power supply or lithium battery to be inputted as data processing module power supply, can ensure data Processing module being capable of normal table operation；The source electrode and drain electrode selection reversal connection mode of wherein PMOS tube U8B and U8A is in order to prevent Supply input electric current reversely flows into lithium battery by parasitic diode, and lithium battery is caused to overcharge.
As shown in figure 3, 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 metal-oxide-semiconductors The source electrode and drain electrode of U1B increases a reversed parasitic diode, prevents electric current when battery powered from charging the battery by diode, Lithium battery is caused to overshoot.Be used as the input terminal of booster U7 by filter capacitor C14 and C3, at the same with pin VEE (inductance L1, The total end that 4 feet of booster U7,5 feet, the anode for having electrode capacitance C3, capacitance C14 drain with PMOS tube U1A) it is connected as boosting The test point of circuit supply voltage detection.The OC pins (6 foot) of booster U7 are connected to ground by resistance R1, FB pins (3 foot) It is connected between resistance R2 and R3 and is grounded by R3.Booster U7 output ends (1 foot) connection diode D3 passes through filter capacitor C15 It is connected with fuse F1 with after C21,5V pins VDD (VDD power output ends is then connected to by zener diode T4 Mouthful)；When the ports VDDEN (14 foot) of data processing module chips U4 export high level, triode Q4 saturation conductions, to It is that rear class sensor circuit is powered to make P MOS pipes U1A conductings, when the ports VDDEN (14 foot) of data processing module chips U4 When exporting 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 the defeated of probe power as needed Go out function；Capacitance C3, booster U7, inductance L1, diode D3, resistance R1, R2, R3, capacitance C15, C21 constitute sensor 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, considers To 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 When forcing down to a certain extent, sensor job insecurity or cisco unity malfunction due to electricity shortage can be led to, so designing this Electric power management circuit, effect are that unstable cell output voltage is converted to stable DC5V power supplys output, improve sensing The reliability of device work, extends the use distance of sensor.Fuse F1 and zener diode T4 constitute probe power System is made in the protective effect of output port, power supply output short-circuit, static electricity on human body, external surge interference etc. caused by preventing artificially At damage.
To ensure that using effect, 6 feet of the charging manager U3 are connected with data processing module, the data processing Module includes chip U4, and 1 foot of chip U4 is connected with one end of capacitance C13, and end is defeated with the 3.3V power supplys of intelligent power supply module altogether Outlet VCC3.3V is connected, the other end of capacitance C13 ground connection, one end of the 7 feet difference connecting resistance R14 of chip U4 and capacitance C8's One end, the other end ground connection of capacitance C8, the other end of resistance R14 and the 3.3V power output ends VCC3.3V of intelligent power supply module 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 C10 one It holds, one end of capacitance C11 is connected with one end of capacitance C12, the 3.3V power output ends at total 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 One end is grounded, 1 foot of one end and port P1 of the emitter difference connecting resistance R23 of triode Q5, altogether end and intelligent power supply module 3.3V power output ends VCC3.3V be connected, the other end of resistance R23 connect respectively triode Q5 base stage and resistance R22 one End, the other end of resistance R22 are connected with 5 feet of port P1, and 2 feet of port P1 are connected with 42 feet of chip U4, and the 3 of port P1 Foot is connected with 43 feet of chip U4, and 4 ground connection of port P1,7 feet of port P1 are connected with 49 feet of chip U4,8 feet of port P1 It is connected with 46 feet of chip U4,5 feet of chip U4 connect one end of one end and capacitance C16 of crystal oscillator M2 respectively, and capacitance C16's is another One end is connected with one end of capacitance C17, and end ground connection, the other end of capacitance C17 connect the other end and chip U4 of crystal oscillator M2 respectively altogether 6 feet；27 feet of chip U4 connect the base stage of triode Q9, the emitter ground connection of triode Q9, collector and sensing through resistance R39 Device interface module (corresponding CHPWR [8..1] end is connected) is connected, and 57 feet of chip U4 connect the base of triode Q10 through resistance R40 Pole, the emitter ground connection of triode Q9, collector are connected with sensor interface module (corresponding CHPWR [8..1] end is connected)； 28 feet of chip U4 are grounded through resistance R17,31 feet, 47 feet, 63 feet, 18 feet, 12 foot earths；The 6 of charging manager U3 Foot is connected with 2 feet of chip U4, and 7 feet of charging manager U3 are connected with 3 feet of chip U4, data processing module chips U4's 14 feet in working sensor power circuit connector VDDEN be connected.
As shown in Figure 11-Figure 5, 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；The ports VDDEN (14 foot) the control intelligent power supply mould of chip U4 is in the block Power supply connected state, U2_TXD (16 foot), U2_RXD (17 foot), 485_RE (20 foot) and the 485_DE (15 foot) four of chip U4 The function of a port is respectively data transmission, data receiver, reception is all-round and transmission is enabled, this four ports are connected to communication mould The RS485 telecommunication circuits of block, for being communicated with storehouse temperature storehouse wet sensor.ADO (21 foot), AD1 (22 foot) and the AD2 of chip U4 (23 foot) port is that subordinate machine system supply voltage detects port, these three ports are connected to supply voltage detection module, wherein ADO Port detecting externally fed supply voltage, AD1 Port detecting booster circuit supply voltages, the output of AD2 Port detecting booster circuits 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 filled for battery Full signal, the ports CH are battery just in charging signals；The U3_TXD (29 foot) of chip U4 and U3_RXD (30 foot) port are connected to The wireless communication port of communication module, function be respectively data send and data receiver, chip U4 by the two ports with Radio communication circuit communicates, for receiving order that measurement and control host computer is sent or sending collected data to measurement and control host computer.CHI 8 passways of [8..1] corresponding extension set (45 feet, 55 feet, 58 feet, 62 feet, 33 feet, 37 feet, 40 feet, 52 feet of corresponding chip U4), For detecting the grain temperature sensor data connected on each channel.The power supply port in the corresponding each channels CHPWR [8..1], For powering to Air conduct measurement, CHL [8..1] (26 feet of corresponding chip U4,28 feet, 8 feet, 9 feet, 10 feet, 11 feet, 24 feet, 25 Foot) 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 Foot, 36 feet, 38 feet, 53 feet) it is used for control output end CH_OUT as high level, input terminal CHI [8..1] is directly connected to output end CH_OUT makes it be consistent, as shown in figure 5, providing the circuit diagram of the grain temperature channel data acquisition in 2 channels.
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, when the both ends capacitance C8 When voltage rises to 2V or more, chip U4 resets terminate, into starting state；The power supply of grain temperature sensor channel is by controlling connection To the port chip U4 corresponding CHPWR [8..1], (1-8 totally 8 access ports correspond to 44 feet of chip U4,54 feet, 27 respectively Foot, 57 feet, 61 feet, 35 feet, 39 feet, 51 feet), make corresponding triode ON or cut-off, power supply is provided for channel.
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, 8 sensor passages of control Working condition is powered channel, data processing；Resistance R39, triode Q9 and resistance R40, triode Q10 are respectively constituted The level shifting circuit of sensor passage, data processing module control sensor passage power work state as needed.
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 are protected Shield device T2 and protection diode D6, protector T2 and protection diode D6 have identical two, the source electrode point of PMOS tube U6B Do not connect 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 and, The source electrode of PMOS tube U6A terminates the VDD output port of power source of the working sensor power circuit, the grid of PMOS tube U6B altogether Pole is connected with the other end of resistance R24, and a corresponding CHPWR [8..1] ports chip termination U4 (are respectively chip U4's 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 current collection of triode Q3 respectively 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 The cathode of protection diode D6 is held as output end CHx_OUT (be connected with corresponding out splice going splice CHx_OUT, wherein x is altogether 1-8 represents the output end in 8 channels) and an input terminal CHI [8..1] port corresponding with data processing module chips U4 (being respectively 45 feet, 55 feet, 58 feet, 62 feet, 33 feet, 37 feet, 40 feet, 52 feet of chip U4) being connected is used as input terminal, PMOS tube The other end of the grid connecting resistance R11 of U6A holds a CHH [8..1] port corresponding with data processing module chips U4 altogether (being respectively 41 feet, 50 feet, 56 feet, 59 feet, 34 feet, 36 feet, 38 feet, 53 feet of chip U4) is connected, the drain electrode of PMOS tube U6A The base stage of the other end of connecting resistance R19, triode Q3 meets the corresponding CHL of data processing module chips U4 through resistance R32 Port [8..1] (being respectively 26 feet, 28 feet, 8 feet, 9 feet, 10 feet, 11 feet, 24 feet, 25 feet of chip U4), the hair of triode Q3 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 is held be grounded altogether, the other end of the grid connecting resistance R16 of PMOS pipes U9A, An end CHH [8..1] port corresponding with data processing module chips U4 (respectively 41 feet of chip U4,50 feet, 56 altogether Foot, 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, resistance R21's is another End connect respectively the drain electrode of PMOS tube U9B, the other end of resistance R28, the other end of capacitance C24, second protector T2 it is another The other end at end and second protection diode D6 is held as output end CHx_OUT (be connected with corresponding out splice going splice altogether CHx_OUT, wherein x are 1-8, represent the output end in 8 channels) and input terminal corresponding with data processing module chips U4 one A CHI [8..1] port (being respectively 45 feet, 55 feet, 58 feet, 62 feet, 33 feet, 37 feet, 40 feet, 52 feet of chip U4) phase continuous cropping For input terminal, the other end of the grid connecting resistance R26 of PMOS tube U9B holds a CHPWR [8..1] corresponding with chip U4 altogether Port (being respectively 44 feet, 54 feet, 27 feet, 57 feet, 61 feet, 35 feet, 39 feet, 51 feet of chip U4) is connected, the base of triode Q6 Pole through resistance R33 connect a corresponding CHL [8..1] ports data processing module chips U4 (be respectively chip U4 26 feet, 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 P5, sensor and power switch port P4 In 3.7V lithium battery power supply output ends be connected, the drain electrode phase continuous cropping of 2 feet and PMOS tube U1B in working sensor power circuit For probe power feeder ear；3 feet are connected with 1 foot of one end of ESD protection device T6 and 8 access port P5 respectively, terminate altogether 4 feet of the VDD output port of power source of the working sensor power circuit, sensor and power switch port P4,5 feet respectively with Communication module is connected, and 6 feet of sensor and power switch port P4 connect the other end and 8 tunnel ends of ESD protection device T6 respectively 2 feet of mouth P5, end ground connection, the 3-10 feet of 8 access port P5 are corresponding defeated with 4 grain temperature channel data Acquisition Circuits respectively altogether Outlet CHx_OUT (being connected with corresponding out splice going splice CHx_OUT, wherein x is 1-8, represents the output end in 8 channels) is connected.
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 [8..1] is held Mouth 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； CHH The port [8..1] is respectively CH1_H and CH2_H, corresponds to the ports CHH1 and the ports CHH2 (34 feet and 36 feet) of chip U4 respectively； Connector CHx_OUT is respectively CH1_OUT and CH2_OUT, and being connected respectively with the corresponding ports of integrated wiring terminal module, (8 logical The CH2 of the 3 foot CH1 and 4 feet of road port P5)；The port CHL [8..1] is respectively CH1_L and CH2_L, corresponds to chip U4's respectively The ports CHL1 and the ports CHL2 (24 feet and 25 feet)；This is the grain temperature channel Acquisition Circuit in 2 channels, other channels and this circuit It 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 electricity It is flat.Output end CHx_OUT is output to port CHx_ after being connected by filter capacitor C23, protector T2 and protection diode D6 OUT；Resistance R24, PMOS tube U6B form sensor passage power supply output control circuit, and data processing module is as needed To control working sensor power supply status；Resistance R11, PMOS tube U6A resistance, R32, triode Q3 composition output state controls Circuit, data processing module carry out control output end CHx_OUT states as needed.CHx_I directly with output end CHx_OUT phases Even, the status information for reading output end CHx_OUT.Output is formed by capacitance C23, protector T2 and protection diode D6 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 P5 Pipe T4 (TVS protective devices) is for protecting subordinate machine system power supply not by extraneous such as thunder and lightning interference.
The present invention is in use, grain feelings detection extension set includes shell and the circuit board in shell, equipped with control on circuit board Circuit processed, which is characterized in that the control circuit includes:
Intelligent power supply module：For providing 3.3V 5V working powers；Output end of powering connects data processing module, leads to The energization input of letter module, supply voltage detection module and sensor interface module；Power source includes that external 5V power supplys supply Electricity, solar panel and lithium battery；Observing and controlling subordinate machine system is adopted in progress grain temperature sensor and storehouse temperature storehouse sensor device data When collection, data processing module can control power supply by the ports VDDEN (14 foot) of chip U4 and connect, and give the wet detection in corresponding bin temperature storehouse Grain temperature detection sensor power supply in sensor and all channels, data processing module can control closing after data acquire Power path reaches energy-efficient purpose；
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), storehouse temperature storehouse wet data (grain temperature, grain are provided for extension set Storehouse 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 includes wireless communication, RS485 communications, and wireless communication is for being communicated with corresponding measurement and control host computer, completing receiving host life It enables, upload the functions such as collected humiture and grain temperature data；Use is communicated with Temperature Humidity Sensor, grain temperature sensor RS485 is communicated.
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.
Communication module includes buzzer U10, RS_485 communication chip U5 and communication port P7, and the power supply of buzzer U10 is defeated Enter end to be respectively connected with one end of capacitance C18 and power supply automatic switchover circuit VCC output port of power source, the signal of buzzer U10 Input terminal is connected with the collector of triode Q7, and the base stage of triode Q7 connects data processing module chips U4's through resistance R25 The other end of 4 feet (ports BEEP), the emitter capacity C18 of triode Q7 is connected, altogether end ground connection, RS_485 communication chips U5 1 foot be connected with 17 feet of data processing module chips U4,2 feet of RS_485 communication chips U5 and data processing module core 20 feet of piece U4 are connected, and 3 feet of RS_485 communication chips U5 are connected with 15 feet of data processing module chips U4, RS_485 4 feet of communication chip U5 are connected with 16 feet of data processing module chips U4, and 5 feet of RS_485 communication chips U5 connect respectively One end of capacitance C19, one end of resistance R6, one end of protector T3, protector T5 one end, altogether end ground connection, RS_485 communication One end of one end and resistance R15 of the 6 feet difference connecting resistance R9 of chip U5, the other end and power supply automatic switchover circuit of resistance R9 In 3.3V power output ends VCC3.3V be connected, one end of the other end of resistance R15 difference connection protector T8 and protector T5's The other end terminates 4 feet of sensor and power switch port P4 in integrated wiring terminal module altogether, RS_485 communication chips U5's 7 feet distinguish one end of the other end and resistance R18 of connecting resistance R6, the other end of the other end difference connection protector T8 of resistance R18 With the other end of protector T3,5 feet of sensor and power switch port P4 in integrated wiring terminal module, RS_485 are terminated altogether 8 feet of communication chip U5 are connected with the other end of capacitance C19, altogether end and the 3.3V power output ends in power supply automatic switchover circuit VCC3.3V is connected, and the 1 foot ground connection of communication port P7,2 feet meet one end of wire jumper J1, one end of wire jumper J2 and capacitance C20 respectively One end, the other end of wire jumper J1 is connected with the 3.3V power output ends VCC3.3V in power supply automatic switchover circuit, wire jumper J2's The other end is connected with the 5V power supply power supply output ends in lithium battery charging management circuit, the other end ground connection of capacitance C20, communication ends 3 feet of mouth P7 are connected with 29 feet of data processing module chips U4,4 feet and the data processing module chips of communication port P7 30 feet of U4 are connected, the 5 feet ground connection of communication port P7.
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, wireless communication unit are an independent radio communication circuits, By USART interfaces (WL_RXD, WL_TXD pin) in the chip U4 in subordinate machine system U3_TXD and U3_RXD connect (29,30 foot), wireless communication unit is mainly responsible for the foundation, connection and maintenance of wireless network, by being wirelessly transferred host number According to data processing module is transmitted to, the data that data processing module receives are sent to goes to be received by host in the air, realizes the inspection of grain feelings Survey the logical biography function of data of 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, resistance 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 communication bus The electrostatic that upper conduction comes damages chip U5.
Buzzer cue circuit includes buzzer U10, resistance R25, NPN triode Q7 and capacitance C18.By data processing mould The port BEEP (4 foot) of block controls triode Q7 on or off, and whether control buzzer works, wire jumper J1, J2 are carried out 3.3V power supplys or 5V power supplys are selected.
Supply voltage detection module includes externally fed voltage detecting circuit, booster circuit supply voltage detection circuit and liter Volt circuit output voltage detecting circuit, externally fed voltage detecting circuit include resistance R30, R31, one end and the electricity of resistance R30 The one end for hindering R31 is connected, altogether 21 feet of terminating data processing module chips U4, another termination lithium battery charging of resistance R30 Manage the other end ground connection of power supply the out splice going splice SDC, resistance R31 of circuit；Booster circuit supply voltage detection circuit includes electricity R7, R13 are hindered, one end of resistance R7 is connected with one end of resistance R13, altogether 22 feet of terminating data processing module chips U4, electricity The test point VEE of the booster circuit supply voltage detection of another termination working sensor power circuit of R7 is hindered, resistance R13's The other end is grounded；Booster circuit output voltage detecting circuit includes resistance R4, R10, one end of resistance R4 and the one of resistance R10 End is connected, altogether 23 feet of terminating data processing module chips U4, another termination working sensor power circuit of resistance R4 The other end of VDD output port of power source VDD, resistance R10 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, and resistance R30 and R31 connector intermediate contact is used In the outer power voltage detection data input terminal AD0 (21 foot) of connection 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.
In conclusion compared with prior art, the present invention has the following advantages：
The present invention has technique effect beneficial below：
1, load capacity is strong：Extension set has 8 acquisition channels altogether, and each channel at most can access 120 temperature measuring points.Altogether may be used To accommodate 960 temperature measuring points.1 extension set can be for using between 1,2,4 or 8 Ao；
2, strong antijamming capability：Plug-in unit P4 is sensor and power switch Wiring port, and ESD protection device T6 therein is used In protection internal circuit from the interference of electrostatic.Plug-in unit P5 is grain temperature channel sensor connectivity port, and TVS protective devices T4 is used for Protect subordinate machine system power supply not by extraneous such as thunder and lightning interference；
3, easy to operate：It only needs grain temperature cable being articulated on main line, be acquired by main line grain temperature corresponding with extension set Channel connects, and host is communicated with extension set, and obtaining extension set by wireless transmission collects the wet information of grain temperature information and storehouse temperature storehouse；
4, adaptable：It is system power supply that lithium battery is used in intensity of illumination deficiency, is only opening acquisition grain temperature When operation, to be powered for grain temperature sensor using lithium battery, other times close power supply, reduce battery loss, when sunny, It is charged for lithium battery using solar energy, and the use of solar energy is that whole system and working sensor are powered, made full use of resource, subtract Few energy waste；
5, communication distance is remote：Using wireless communication technique by wireless communication unit based on ad hoc network function with it is corresponding Measurement and control host computer establishes wireless telecommunications convenient for networking.It is more convenient without manually carrying out complicated path setting and safeguarding；
6, extend lithium battery service life：Scheme, environmental suitability are supplied using solar energy and lithium battery modular power supply By force, intelligent power supply module uses intelligent electric power management mechanism, effectively reduces the charge and discharge number of lithium battery, extends making for lithium battery With the service life, solar energy utilization ratio is improved, it is lithium battery usage time to extend no light.Energy utilization rate is high, and service life is long, work( It consumes low.

Claims (4)

1. a kind of intelligent power supply module for grain feelings detection extension set, which is characterized in that the intelligent power supply module includes circuit board With lithium battery charging management circuit, power supply automatic switchover circuit and the working sensor power circuit of setting on circuit boards, institute The lithium battery charging management circuit stated includes charging manager U3, and 1 foot of charging manager U3 connects solar cell port respectively 2 feet of P2,2 feet of 5V power ports P9, one end of discharge tube T7, one end of discharge tube T1, the cathode for having electrode capacitance C1, charging 3 feet of 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, fill 2 feet of electric manager U3 are connected with the other end of resistance R12, and 4 feet of electric manager U3 connect the cathode of diode D2, two poles respectively The cathode of 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 5V 1 foot of power port P9, the other end of discharge tube T7 are connected, and as 5V power supply power supply output ends, the anode of diode D1 is respectively The other end for connecing 1 foot and discharge tube T1 of solar cell port P2, as solar cell for supplying power output end, charging manager 5 feet of 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, as 3.7V Lithium battery power supply output end；
The power supply automatic switchover circuit includes three terminal regulator U2, PMOS tube U8A, U8B and triode Q1, Q8, three-terminal voltage-stabilizing 2 feet of device U2 are connected to the transmitting of the anode of electrode capacitance C2, the source electrode of PMOS tube U8B, the cathode of diode D5, triode Q1 respectively The source electrode of pole, one end of resistance R35 and PMOS tube U8A is held be used as VCC output port of power source altogether, there is the cathode point of electrode capacitance C2 It is not connected to the cathode of electrode capacitance C7,1 foot of three terminal regulator U2, one end of resistance R37, the emitter of triode Q8, resistance R34 One end, end ground connection altogether, the drain electrode of PMOS tube U8B is connected with the anode of diode D5, and the grid of PMOS tube U8B connects three poles respectively The other end of the collector and resistance R37 of pipe Q1, the base stage of triode Q1 through resistance R38 connect respectively triode Q8 collector and One end of resistance 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 Drain electrode connect respectively controllable accurate source of stable pressure Q2 cathode and resistance R42 one end, altogether end with lithium battery charging management circuit in 4 feet of electric 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 R41,3 feet of three terminal regulator U2 are connected with there is the anode of electrode capacitance C7, altogether End is used as 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, triode Q4's Base stage is connected with one end of resistance R5, and the other end of resistance R5 is equipped with connector VDDEN.
2. the intelligent power supply module according to claim 1 for grain feelings detection extension set, which is characterized in that the charging valve 6 feet of reason device U3 are connected with data processing module, and the data processing module includes chip U4,1 foot and capacitance of chip U4 One end of C13 is connected, and end is connected with the 3.3V power output ends VCC3.3V of intelligent power supply module altogether, another termination of capacitance C13 Ground, one end of one end and capacitance C8 of the 7 feet difference connecting resistance R14 of chip U4, the other end ground connection of capacitance C8, resistance R14's The other end is connected with the 3.3V power output ends VCC3.3V of intelligent power supply module, 13 feet of chip U4 respectively with chip U4 19 Foot, 64 feet, 48 feet, 32 feet, one end of capacitance C9, one end of capacitance C10, one end of capacitance C11 and capacitance C12 one end phase Even, end is connected with the 3.3V power output ends VCC3.3V of intelligent power supply module altogether, and the other end of capacitance C9 meets capacitance C10 respectively The other end, capacitance C11 the other end and capacitance C12 the other end, end ground connection altogether, the 60 feet difference connecting resistance R20 of chip U4 One end and triode Q5 collector, the other end ground connection of resistance R20, the emitter difference connecting resistance R23's of triode Q5 1 foot of one end and port P1 is held be connected with the 3.3V power output ends VCC3.3V of intelligent power supply module altogether, and resistance R23's is another End connects one end of the base stage and resistance R22 of triode Q5 respectively, and the other end of resistance R22 is connected with 5 feet of port P1, port P1 2 feet be connected with 42 feet of chip U4,3 feet of port P1 are connected with 43 feet of chip U4, port P1 4 ground connection, the 7 of port P1 Foot is connected with 49 feet of chip U4, and 8 feet of port P1 are connected with 46 feet of chip U4, and 5 feet of chip U4 connect crystal oscillator M2's respectively The other end of one end of one end and capacitance C16, capacitance C16 is connected with one end of capacitance C17, altogether end ground connection, and capacitance C17's is another End connects 6 feet of the other end and chip U4 of crystal oscillator M2 respectively；27 feet of chip U4 connect the base stage of triode Q9 through resistance R39, and three The emitter of pole pipe Q9 is grounded, and collector is connected with sensor interface module, and 57 feet of chip U4 connect triode through resistance R40 The base stage of Q10, the emitter ground connection of triode Q9, collector are connected with sensor interface module；28 feet of chip U4 are through resistance R17 is grounded, 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, 7 feet of charging manager U3 are connected with 3 feet of chip U4,14 feet and the working sensor power supply of data processing module chips U4 Connector VDDEN in circuit be connected.
3. the intelligent power supply module according to claim 2 for grain feelings detection extension set, which is characterized in that the sensing Device interface module includes 4 identical grain temperature channel data Acquisition Circuits, and each grain temperature channel data Acquisition Circuit corresponds to 2 grains Warm data acquisition channel 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, and the source electrode of PMOS tube U6B connects one end of capacitance C25, electricity respectively Hold one end of C26, one end of resistance R26, the source electrode of PMOS tube U9B, one end of resistance R28, one end of resistance R16, PMOS tube The source electrode of U9A, one end of resistance R24, one end of resistance R27, resistance R11 one end and, the source electrode of PMOS tube U6A, altogether terminate The grid of the VDD output port of power source of the working sensor power circuit, PMOS tube U6B is connected with the other end of resistance R24, A corresponding CHPWR [8..1] port chip termination U4 altogether, the drain electrode of PMOS tube U6B connect respectively the collector of triode Q3, The other end of resistance R27, one end of resistance R19, one end of capacitance C23, one end of first protector T2 and first protection The cathode of diode D6, end is used as output end CHx_OUT altogether and input terminal is one corresponding with data processing module chips U4 The port CHI [8..1], which is connected, is used as input terminal, the other end of the grid connecting resistance R11 of PMOS tube U6A, altogether end and data processing mould A corresponding CHH [8..1] ports block chips U4 are connected, the other end of the drain electrode connecting resistance R19 of PMOS tube U6A, triode The base stage of Q3 connects a corresponding CHL [8..1] ports data processing module chips U4, the transmitting of triode Q3 through resistance R32 Pole connects the other end of capacitance C23, the other end of capacitance C25, the other end of capacitance C26, the emitter of triode Q6, capacitance respectively One end of C24, one end of second protector T2, the other end of first protector T2, second protection diode D6 one The other end at end and first protection diode D6, end ground connection, the other end of the grid connecting resistance R16 of PMOS tube U9A are held altogether altogether A CHH [8..1] port corresponding with data processing module chips U4 is connected, the drain electrode connecting resistance R21's of PMOS tube U9A The other end of one end, resistance R21 connects the drain electrode of PMOS tube U9B, the other end of resistance R28, the other end of capacitance C24, respectively The other end of the other end and second protection diode D6 of two protector T2, end is as output end CHx_OUT and input altogether An end CHI [8..1] port corresponding with data processing module chips U4, which is connected, is used as input terminal, the grid of PMOS tube U9B The other end of connecting resistance R26, an end CHPWR [8..1] port corresponding with chip U4 is connected altogether, the base stage warp of triode Q6 Resistance R33 connects a corresponding CHL [8..1] ports data processing module chips U4.
4. the intelligent power supply module according to claim 3 for grain feelings detection extension set, which is characterized in that the sensor Interface module further includes integrated wiring terminal module, integrated wiring terminal module include sensor and power switch port P4,8 1 foot of access port P5, sensor and power switch port P4 and the 3.7V lithium battery power supplies in lithium battery charging management circuit Output end is connected, and 2 feet are connected with the drain electrode of PMOS tube U1B in working sensor power circuit is used as probe power feeder ear；3 Foot is connected with 1 foot of one end of ESD protection device T6 and 8 access port P5 respectively, terminates the working sensor power supply electricity altogether 4 feet, 5 feet of the VDD output port of power source on road, sensor and power switch port P4 are connected with communication module respectively, sensor Connect 2 feet of the other end and 8 access port P5 of ESD protection device T6 respectively with 6 feet of power switch port P4, altogether end ground connection, 8 Output end CHx_OUT's 3-10 feet of a access port P5 corresponding with 4 grain temperature channel data Acquisition Circuits is connected respectively.
CN201810859506.6A 2018-08-01 2018-08-01 The intelligent power supply module of extension set is detected for grain feelings Withdrawn CN108574333A (en)

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