CN109193901B - Power supply system of data acquisition equipment - Google Patents
Power supply system of data acquisition equipment Download PDFInfo
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- CN109193901B CN109193901B CN201811204744.XA CN201811204744A CN109193901B CN 109193901 B CN109193901 B CN 109193901B CN 201811204744 A CN201811204744 A CN 201811204744A CN 109193901 B CN109193901 B CN 109193901B
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- 238000004146 energy storage Methods 0.000 claims abstract description 58
- 239000003990 capacitor Substances 0.000 claims description 95
- 230000000087 stabilizing effect Effects 0.000 claims description 16
- 239000004303 calcium sorbate Substances 0.000 claims description 9
- 239000004302 potassium sorbate Substances 0.000 claims description 9
- 239000004283 Sodium sorbate Substances 0.000 claims description 8
- 230000001629 suppression Effects 0.000 claims description 7
- 230000001052 transient effect Effects 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 2
- 238000003973 irrigation Methods 0.000 description 2
- 230000002262 irrigation Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 210000000352 storage cell Anatomy 0.000 description 1
Classifications
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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
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0034—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using reverse polarity correcting or protecting circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1584—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
- H02M3/072—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps adapted to generate an output voltage whose value is lower than the input voltage
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a power supply system of data acquisition equipment, which comprises a solar photovoltaic panel, an energy storage battery, a main controller, a step-down circuit, a step-up circuit, a charging control circuit and an external battery power supply switch, wherein the step-up circuit is connected with the main controller; the solar photovoltaic panel is respectively connected with the input ends of the voltage reducing circuit and the voltage boosting circuit, and the output ends of the voltage reducing circuit and the voltage boosting circuit are connected with the energy storage battery; the control end of the charging control circuit is connected with internal hardware, the input end of the charging control circuit is connected with the positive electrode of the energy storage battery, and the output end of the charging control circuit is connected with the control end of the voltage reducing circuit; the control end of the external battery power supply switch is connected with the main controller, the input end of the external battery power supply switch is respectively connected with the solar photovoltaic panel, the energy storage battery and the internal hardware, and the output end of the external battery power supply switch is used for supplying power to the data acquisition equipment. The invention can realize all-weather power supply to the data acquisition equipment, and the solar light panel is adopted to charge the energy storage battery. The invention is suitable for the field of data acquisition equipment.
Description
Technical Field
The invention relates to the field of data acquisition equipment, in particular to a power supply system of the data acquisition equipment.
Background
Technological progress and increased business requirements make information statistics and analysis more and more demanding. Stability and integrity of data acquisition in the big data information age are one of the crucial factors. The integrity of information acquisition is ensured, the data acquisition equipment can be ensured to normally operate, and continuous power is used for ensuring the stable operation of the acquisition equipment in advance. The power of the existing data acquisition equipment generally comes from two aspects: first, mains supply; a second storage battery supplies power;
the two power supply modes still have the defects that the first and most of the current data acquisition equipment adopts the mains supply for power supply, and data cannot be acquired and reported when power failure emergency occurs or the situation that the power supply is not available in non-irrigation and drainage time in the irrigation and drainage area is similar to the situation. Second, influenced by the structure of the data acquisition equipment, the spare battery of the existing data acquisition equipment has small capacity, short power supply time and needs to increase the battery capacity, and the battery belongs to a loss part, so that the self-loss is very large under severe environment after long-time leakage, and the service life is short. Third, even if a spare battery is additionally installed, the battery capacity is limited in a power failure state, and power cannot be supplied for a long time.
Disclosure of Invention
The invention aims to solve the problem of the defects of the power supply system of the data acquisition equipment, and provides the power supply system of the data acquisition equipment, which can realize the characteristic of all-weather long-time power supply.
In order to achieve the above purpose of the present invention, the following technical scheme is adopted: a power supply system of data acquisition equipment comprises a solar photovoltaic panel, an energy storage battery, a main controller, a voltage reduction circuit, a voltage boosting circuit, a charging control circuit and an external battery power supply switch; the solar photovoltaic panel is respectively connected with the input ends of the voltage reducing circuit and the voltage boosting circuit, and the output ends of the voltage reducing circuit and the voltage boosting circuit are connected with the energy storage battery; the control end of the charging control circuit is connected with internal hardware, the input end of the charging control circuit is connected with the positive electrode of the energy storage battery, and the output end of the charging control circuit is connected with the control end of the voltage reducing circuit; the control end of the external battery power supply switch is connected with the main controller, the input end of the external battery power supply switch is respectively connected with the solar photovoltaic panel, the energy storage battery and the internal hardware, and the output end of the external battery power supply switch is used for supplying power to the data acquisition equipment.
Preferably, the solar energy collection device further comprises a Faraday capacitor charging circuit and an anti-reverse connection circuit, wherein the input end of the Faraday capacitor charging circuit is connected with the solar photovoltaic panel and the energy storage battery, and the output end of the Faraday capacitor charging circuit is connected with the data collection device; the input end of the anti-reverse circuit is connected with the solar photovoltaic panel, and the output end of the anti-reverse circuit is connected with the input end of the voltage reduction circuit, the input end of the voltage boosting circuit and the input end of the external battery power supply switch respectively.
Preferably, the anti-reverse connection circuit comprises a bipolar transient suppression diode, a CMOS (complementary metal oxide semiconductor) tube, a diode R204, a diode R213 and a wiring terminal P202; the wiring terminal is led out of two pins, wherein one pin is directly connected with the input end of the solar photovoltaic panel, the input end of the energy storage battery and the input of the external battery power supply switch; the other pin is connected with the drain electrode of the CMOS tube; the bipolar transient suppression diode is connected in parallel with two pins of the wiring terminal; the grid electrode of the CMOS tube is connected with the input end of the solar photovoltaic panel, the input end of the energy storage battery and the input of the external battery power supply switch through a resistor R204; the source electrode of the CMOS tube is grounded;
preferably, the step-down circuit includes a capacitor C203, a capacitor C204, a resistor R219, a resistor R223, a step-down module, a schottky diode, an inductor L201, a resistor R220, a resistor R224, a capacitor E201, a capacitor C202, a diode D201, a triode Q203, a resistor R225, a resistor R227, and a resistor R226;
the capacitor C203 and the capacitor C204 are connected in parallel, the rear end of the capacitor C is grounded, and the other end of the capacitor C is connected with an input pin of the anti-reverse circuit and the input pin of the anti-reverse circuit;
the resistor R219 is connected in parallel between the input end of the voltage reduction module and the EN pin of the voltage reduction module; one end of the resistor R223 is connected with an EN pin of the voltage reduction module, and the other end of the resistor R223 is grounded;
the positive electrode of the Schottky diode is grounded, and the negative electrode of the Schottky diode is respectively connected with the output pin of the voltage reduction module;
the output pin of the voltage reduction module is connected with the positive electrode of the energy storage battery through an inductor L201 and a diode D201 respectively;
one end of the capacitor E201 and the capacitor 202 which are connected in parallel is connected between the inductor E201 and the capacitor C202, and the other end is grounded;
one end of the resistor R220 is connected between the inductor L201 and the capacitor C202, and the other end of the resistor R is connected with the FB pin of the voltage reduction module;
one end of the resistor R224 is connected with the FB pin of the voltage dropping module, and the other end of the resistor R is grounded;
one end of the resistor R225 is connected with the output end of the charging control circuit; the other end is connected with the base electrode of the triode Q203; the collector electrode of the triode Q203 is connected with the EN pin of the buck module;
one end of the resistor R227 is connected with an IO pin of the main controller, and the other end of the resistor R227 is connected with the emitter of the triode Q203 through a resistor R226 and then grounded;
the base of the transistor Q203 is connected between the resistor R227 and the resistor R226.
Preferably, the boost circuit includes a resistor R236, a resistor R247, a controllable precision voltage stabilizing source TL431, a resistor R237, a resistor R243, a resistor R248, a resistor R234, a resistor R238, a CMOS transistor Q205, a triode Q207, a capacitor E203, a capacitor C207, a resistor R245, a resistor R240, a resistor R249, a boost module, a resistor R239, an inductor L202, a schottky diode D206, a schottky diode D205, a capacitor C208, a capacitor E202, a capacitor C206, and a diode D207;
the output end of the anti-reverse circuit is connected with the source electrode of the CMOS tube Q205, one end of the resistor R236 is connected with the source electrode of the CMOS tube Q205, and the other end is connected with the reference electrode of the controllable precise voltage stabilizing source TL 431;
one end of the resistor R247 is connected with the reference electrode of the controllable precise voltage stabilizing source TL431, and the other end of the resistor R247 is connected with the reference electrode; the anode of the controllable precise voltage stabilizing source TL431 is grounded; the cathode of the controllable precise voltage stabilizing source TL431 is connected with the source electrode of the CMOS tube Q205 through a resistor R237;
the resistor R234 is connected in parallel between the source electrode and the grid electrode of the CMOS tube Q205; the grid electrode of the CMOS tube Q205 is connected with the collector electrode of the triode Q207 through a resistor R238;
the positive electrode of the capacitor E203 is connected with the drain electrode of the CMOS tube Q205, and the drain electrode of the CMOS tube Q205 is connected with the positive electrode of the energy storage battery through a Schottky diode;
the capacitor C207 is connected in parallel with the two ends of the capacitor E203, one end of the resistor R245 is connected with the capacitor C207, the other end is connected with the IPK pin of the boosting module, and meanwhile, the resistor R239 is connected with the DRC pin of the boosting module;
the VCC pin of the boosting module is connected between the resistor R240 and the capacitor C207, and the CMP pin of the boosting module is grounded through the resistor R249; the TC pin of the boost module is grounded through a capacitor C208;
one end of the inductor L202 is simultaneously connected with a resistor R239 and a resistor R245; the other end is simultaneously connected with the SWC pin of the boost module and the anode of the Schottky diode D206; the cathode of the Schottky diode D206 is connected with the anode of the energy storage battery through a diode D207;
one end of the resistor R240 is connected with the resistor R249, and the other end is connected between the Schottky diode D206 and the diode D207; one end of the capacitor E202 is grounded after being connected in parallel with the capacitor C206, and the other end of the capacitor E is connected with the anode of the diode D207; wherein the anode of the capacitor E202 is connected to the anode of the diode D207.
Preferably, the charging control circuit includes a resistor R216, a resistor R221, a resistor R215, a light emitting diode D203, an operational amplifier U204A, a resistor R222, and a resistor R217;
one end of the resistor R216 is connected with the positive electrode of the energy storage battery, and the other end of the resistor R is connected with the positive input end of the operational amplifier U204A;
one end of the resistor R221 is connected with the positive input end of the operational amplifier U204A, and the other end of the resistor R is grounded;
the resistor R222 is connected in parallel between the positive input end and the output end of the operational amplifier U204A;
the power supply of the operational amplifier U204A is powered by an energy storage battery; the power pin of the operational amplifier U204A is connected with the negative input end of the operational amplifier U204A through a resistor R215, and the negative input end of the operational amplifier U204A is connected with internal hardware and grounded through a light emitting diode D203;
the output end of the operational amplifier U204A is connected with a resistor R225 through a resistor R217.
Preferably, the external battery power switch includes a resistor R235, a resistor R246, an operational amplifier U204B, a resistor R244, a resistor R233, a resistor R230, a resistor R228, a resistor R229, a CMOS transistor Q204, a diode D204, a capacitor C205, a resistor R231, a transistor Q206, a resistor R241, a resistor R242;
the negative input end of the operational amplifier U204B is internally connected with hardware; the positive input end of the operational amplifier U204B is connected with the output end of the anti-reverse circuit through a resistor R235; simultaneously, the ground is connected to the ground after passing through a resistor R246;
the resistor R244 is connected in parallel between the positive input end and the output end of the operational amplifier U204B; the output end of the operational amplifier U204B is connected with the grid electrode of the CMOS tube Q204 through a resistor R233;
the source electrode of the CMOS tube Q204 is connected with the anode of the energy storage battery; the resistor R230 is connected in parallel between the grid electrode and the source electrode of the CMOS tube Q204;
one end of the resistor R228 connected in parallel with the resistor R229 is connected with the drain electrode of the CMOS tube Q204, and the other end of the resistor R228 is connected with the grid electrode of the CMOS tube Q204 through a capacitor C205;
the anode of the diode D204 is connected with the drain electrode of the CMOS tube Q204, and the cathode of the diode D204 is connected with the power end of the data acquisition equipment;
the grid electrode of the CMOS tube Q204 is connected with the collector electrode of the triode Q206 through a resistor R231;
the resistor R242 is connected in parallel between the base electrode and the emitter electrode of the triode Q206, and the emitter electrode of the triode Q206 is grounded; the base of the triode Q206 is connected with an IO pin of the main controller through a resistor 241.
The beneficial effects of the invention are as follows: according to the invention, the solar photovoltaic panel is adopted to charge the energy storage battery, so that the energy storage battery can be kept to continuously supply power to the data acquisition equipment under the condition of power failure, and all-weather power supply to the data acquisition equipment is realized; the invention adopts the step-up circuit and the step-down circuit to ensure that the solar photovoltaic panel can output stable voltage, thereby being capable of storing the service life of the battery.
Drawings
Fig. 1 is a schematic diagram of a power supply system of a data acquisition device.
Fig. 2 is a circuit diagram of the anti-reverse circuit of the present invention.
Fig. 3 is a circuit diagram of the step-down circuit of the present invention.
Fig. 4 is a circuit diagram of the booster circuit of the present invention.
Fig. 5 is a circuit diagram of the charge control circuit of the present invention.
Fig. 6 is a circuit diagram of an external battery powered switch of the present invention.
Detailed Description
The invention is described in detail below with reference to the drawings and the detailed description.
Example 1
As shown in fig. 1, a power supply system of a data acquisition device comprises a solar photovoltaic panel, an energy storage battery, a main controller, a voltage reduction circuit, a voltage boosting circuit, a charging control circuit and an external battery power supply switch; the solar photovoltaic panel is respectively connected with the input ends of the voltage reducing circuit and the voltage boosting circuit, and the output ends of the voltage reducing circuit and the voltage boosting circuit are connected with the energy storage battery; the control end of the charging control circuit is connected with internal hardware, the input end of the charging control circuit is connected with the positive electrode of the energy storage battery, and the output end of the charging control circuit is connected with the control end of the voltage reducing circuit; the control end of the external battery power supply switch is connected with the main controller, the input end of the external battery power supply switch is respectively connected with the solar photovoltaic panel, the energy storage battery and the internal hardware, and the output end of the external battery power supply switch is used for supplying power to the data acquisition equipment.
The utility power, the solar photovoltaic panel and the energy storage battery are used for supplying power to the data acquisition equipment, and the data acquisition equipment is also provided with a collector, an ammeter, a water meter, a heat meter and a gas meter; the collector is used for collecting data of the electric meter, the water meter, the heat meter and the gas meter, transmitting the data to the main controller in the data collecting device for data processing, and transmitting the data to the main station.
The invention also comprises a Faraday capacitor charging circuit and an anti-reverse connection circuit, wherein the input end of the Faraday capacitor charging circuit is connected with the solar photovoltaic panel and the energy storage battery, and the output end of the Faraday capacitor charging circuit is connected with the data acquisition equipment; the input end of the anti-reverse circuit is connected with the solar photovoltaic panel, and the output end of the anti-reverse circuit is connected with the input end of the voltage reduction circuit, the input end of the voltage boosting circuit and the input end of the external battery power supply switch respectively. The Faraday capacitor charging circuit is used for providing electric quantity for the data acquisition equipment to store the electric quantity required by data when the commercial power and the energy storage battery are not powered. The anti-reverse connection circuit is used for preventing damage caused when the wiring terminal is reversely connected with the solar photovoltaic panel.
As shown in fig. 2, the anti-reverse connection circuit comprises a bipolar transient suppression diode, a CMOS transistor Q201, a diode R204, a diode R213, and a connection terminal P202; the wiring terminal is led out of two pins, wherein one pin is directly connected with the input end of the solar photovoltaic panel, the input end of the energy storage battery and the input of the external battery power supply switch; the other pin is connected with the drain electrode of the CMOS transistor Q201; the bipolar transient suppression diode is connected in parallel with two pins of the wiring terminal; the grid electrode of the CMOS tube Q201 is connected with the input end of the solar photovoltaic panel, the input end of the energy storage battery and the input of the external battery power supply switch through a resistor R204; the source electrode of the CMOS tube Q201 is grounded; the bipolar transient suppression diode can bear instant pulse so as to protect other electronic elements, the CMOS tube Q201 can play a role of a switch, when a circuit is connected reversely, the CMOS tube Q201 is not conducted, and the CMOS tube Q201 adopts CEU84A4 type.
As shown in fig. 3, when the voltage of the output end Vin of the solar photovoltaic panel is greater than the battery charging voltage, the main controller in the data acquisition device automatically charges the energy storage battery with the voltage of the solar photovoltaic panel through the step-down circuit. The step-down circuit comprises a capacitor C203, a capacitor C204, a resistor R219, a resistor R223, a step-down module, a Schottky diode, an inductor L201, a resistor R220, a resistor R224, a capacitor E201, a capacitor C202, a diode D201, a triode Q203, a resistor R225, a resistor R227 and a resistor R226; the step-down module adopts a step-down module of model TD 7590.
The capacitor C203 and the capacitor C204 are connected in parallel, the rear end of the capacitor C is grounded, and the other end of the capacitor C is connected with an input pin of the anti-reverse circuit and the input end of the voltage reduction module.
The resistor R219 is connected in parallel between the input end of the voltage reduction module and the EN pin of the voltage reduction module; one end of the resistor R223 is connected with an EN pin of the voltage dropping module, and the other end of the resistor R223 is grounded.
The positive electrode of the Schottky diode is grounded, and the negative electrode of the Schottky diode is respectively connected with the output pins of the voltage reduction module.
And an output pin of the voltage reduction module is connected with the positive electrode of the energy storage battery through an inductor L201 and a diode D201 respectively.
One end of the capacitor E201 and the capacitor 202 which are connected in parallel is connected between the inductor E201 and the capacitor C202, and the other end is grounded.
One end of the resistor R220 is connected between the inductor L201 and the capacitor C202, and the other end is connected with the FB pin of the voltage dropping module.
One end of the resistor R224 is connected with the FB pin of the voltage dropping module, and the other end of the resistor R is grounded.
One end of the resistor R225 is connected with the output end of the charging control circuit; the other end is connected with the base electrode of the triode Q203; and the collector electrode of the triode Q203 is connected with the EN pin of the buck module.
One end of the resistor R227 is connected with an IO pin of the main controller, and the other end of the resistor R227 is connected with an emitter of the triode Q203 through a resistor R226 and then grounded.
The base of the transistor Q203 is connected between the resistor R227 and the resistor R226.
As shown in fig. 4, when the voltage of the output end Vin of the solar photovoltaic panel is equal to or less than the charging voltage of the energy storage battery, the voltage of the solar photovoltaic panel is charged to the battery through the booster circuit, so that the energy of the solar photovoltaic panel is effectively utilized, the stability of the charging voltage is ensured, and the service life of the energy storage battery can be prolonged. The boost circuit comprises a resistor R236, a resistor R247, a controllable precise voltage stabilizing source U207, a resistor R237, a resistor R243, a resistor R248, a resistor R234, a resistor R238, a CMOS transistor Q205, a triode Q207, a capacitor E203, a capacitor C207, a resistor R245, a resistor R240, a resistor R249, a boost module, a resistor R239, an inductor L202, a Schottky diode D206, a Schottky diode D205, a capacitor C208, a capacitor E202, a capacitor C206 and a diode D207; the CMOS transistor Q205 adopts CEU95P04 model, the boosting module adopts MC33063AD model, the triode Q207 adopts MMBT3904 model, and the controllable precise voltage stabilizing source U207 adopts TL431 model.
The output end of the anti-reverse circuit is connected with the source electrode of the CMOS tube Q205, one end of the resistor R236 is connected with the source electrode of the CMOS tube Q205, and the other end is connected with the reference electrode of the controllable precise voltage stabilizing source U207.
One end of the resistor R247 is connected with the reference electrode of the controllable precise voltage stabilizing source U207, and the other end of the resistor R247 is connected with the reference electrode; the anode of the controllable precise voltage stabilizing source U207 is grounded; the cathode of the controllable precision voltage stabilizing source U207 is connected with the source of the CMOS tube Q205 through a resistor R237.
The resistor R234 is connected in parallel between the source electrode and the grid electrode of the CMOS tube Q205; the gate of the CMOS transistor Q205 is connected to the collector of the transistor Q207 through a resistor R238.
The positive electrode of the capacitor E203 is connected with the drain electrode of the CMOS tube Q205, and the drain electrode of the CMOS tube Q205 is connected with the positive electrode of the energy storage battery through a Schottky diode.
The capacitor C207 is connected in parallel with the two ends of the capacitor E203, one end of the resistor R245 is connected with the capacitor C207, the other end is connected with the IPK pin of the boosting module, and meanwhile, the resistor R239 is connected with the DRC pin of the boosting module.
The VCC pin of the boosting module is connected between the resistor R240 and the capacitor C207, and the CMP pin of the boosting module is grounded through the resistor R249; the TC pin of the boost module is grounded through capacitor C208.
One end of the inductor L202 is simultaneously connected with a resistor R239 and a resistor R245; the other end is simultaneously connected with the SWC pin of the boost module and the anode of the Schottky diode D206; the cathode of the schottky diode D206 is connected to the anode of the energy storage cell through a diode D207.
One end of the resistor R240 is connected with the resistor R249, and the other end is connected between the Schottky diode D206 and the diode D207; one end of the capacitor E202 is grounded after being connected in parallel with the capacitor C206, and the other end of the capacitor E is connected with the anode of the diode D207; wherein the anode of the capacitor E202 is connected to the anode of the diode D207.
As shown in fig. 5, the charge control circuit includes a resistor R216, a resistor R221, a resistor R215, a light emitting diode D203, an operational amplifier U204A, a resistor R222, and a resistor R217; the operational amplifier U204A adopts the model LM2904 PWR.
One end of the resistor R216 is connected with the positive electrode of the energy storage battery, and the other end of the resistor R is connected with the positive input end of the operational amplifier U204A.
One end of the resistor R221 is connected to the positive input end of the operational amplifier U204A, and the other end is grounded.
The resistor R222 is connected in parallel between the positive input and the output of the operational amplifier U204A.
The power supply of the operational amplifier U204A is powered by an energy storage battery; the power pin of the operational amplifier U204A is connected with the negative input end of the operational amplifier U204A through a resistor R215, and the negative input end of the operational amplifier U204A is connected with internal hardware and grounded through a light emitting diode D203.
The output end of the operational amplifier U204A is connected with a resistor R225 through a resistor R217.
When the voltage of the energy storage battery in this embodiment is greater than 14.4V, the output end of the operational amplifier U204A outputs a high level, which is used to control the buck module to work.
As shown in fig. 6, when the external battery power supply switch detects that the voltage at two ends of the solar photovoltaic panel is lower than 8.8V, the external battery power supply switch automatically opens the external energy storage battery to supply power to the data acquisition equipment. The external battery power supply switch comprises a resistor R235, a resistor R246, an operational amplifier U204B, a resistor R244, a resistor R233, a resistor R230, a resistor R228, a resistor R229, a CMOS tube Q204, a diode D204, a capacitor C205, a resistor R231, a triode Q206, a resistor R241 and a resistor R242, wherein the operational amplifier U204B.
The negative input end of the operational amplifier U204B is internally connected with hardware; the positive input end of the operational amplifier U204B is connected with the output end of the anti-reverse circuit through a resistor R235; while being grounded through resistor R246.
The resistor R244 is connected in parallel between the positive input end and the output end of the operational amplifier U204B; the output end of the operational amplifier U204B is connected with the grid electrode of the CMOS tube Q204 through a resistor R233.
The source electrode of the CMOS tube Q204 is connected with the anode of the energy storage battery; the resistor R230 is connected in parallel between the gate and source of the CMOS transistor Q204.
One end of the resistor R228 connected in parallel with the resistor R229 is connected to the drain of the CMOS transistor Q204, and the other end is connected to the gate of the CMOS transistor Q204 through the capacitor C205.
The positive electrode of the diode D204 is connected with the drain electrode of the CMOS tube Q204, and the negative electrode of the diode D204 is connected with the power end of the data acquisition equipment.
The gate of the CMOS transistor Q204 is connected to the collector of the transistor Q206 through a resistor R231.
The resistor R242 is connected in parallel between the base electrode and the emitter electrode of the triode Q206, and the emitter electrode of the triode Q206 is grounded; the base of the triode Q206 is connected with an IO pin of the main controller through a resistor 241.
In order to prevent the life of the energy storage battery from being influenced by insolation, the shell of the energy storage battery is made of materials with good mechanical strength and good flame retardant property, such as metal, plastic and the like.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (4)
1. A power supply system for a data acquisition device, characterized by: the solar energy storage battery comprises a solar photovoltaic panel, an energy storage battery, a main controller, a step-down circuit, a step-up circuit, a charging control circuit and an external battery power supply switch; the solar photovoltaic panel is respectively connected with the input ends of the voltage reducing circuit and the voltage boosting circuit, and the output ends of the voltage reducing circuit and the voltage boosting circuit are connected with the energy storage battery; the control end of the charging control circuit is connected with internal hardware, the input end of the charging control circuit is connected with the positive electrode of the energy storage battery, and the output end of the charging control circuit is connected with the control end of the voltage reducing circuit; the control end of the external battery power supply switch is connected with the main controller, the input end of the external battery power supply switch is respectively connected with the solar photovoltaic panel, the energy storage battery and the internal hardware, and the output end of the external battery power supply switch is used for supplying power to the data acquisition equipment;
the power supply system of the data acquisition equipment further comprises a Faraday capacitor charging circuit and an anti-reverse connection circuit, wherein the input end of the Faraday capacitor charging circuit is connected with the solar photovoltaic panel and the energy storage battery, and the output end of the Faraday capacitor charging circuit is connected with the data acquisition equipment; the input end of the anti-reverse circuit is connected with the solar photovoltaic panel, and the output end of the anti-reverse circuit is connected with the input end of the voltage reduction circuit, the input end of the voltage boosting circuit and the input end of the external battery power supply switch respectively;
the anti-reverse connection circuit comprises a bipolar transient suppression diode, a CMOS tube Q201, a resistor R204, a resistor R213 and a wiring terminal P202; the wiring terminal is led out of two pins, wherein one pin is directly connected with the input end of the solar photovoltaic panel, the input end of the energy storage battery and the input end of the external battery power supply switch; the other pin is connected with the drain electrode of the CMOS tube Q201; the bipolar transient suppression diode is connected in parallel with two pins of the wiring terminal; the grid electrode of the CMOS tube Q201 is connected with the input end of the solar photovoltaic panel, the input end of the energy storage battery and the input end of the external battery power supply switch through a resistor R204; the source electrode of the CMOS tube Q201 is grounded;
the step-down circuit comprises a capacitor C203, a capacitor C204, a resistor R219, a resistor R223, a step-down module, a Schottky diode D202, an inductor L201, a resistor R220, a resistor R224, a capacitor E201, a capacitor C202, a diode D201, a triode Q203, a resistor R225, a resistor R227 and a resistor R226;
the capacitor C203 and the capacitor C204 are connected in parallel, the rear end of the capacitor C is grounded, and the other end of the capacitor C is connected with an input pin of the anti-reverse circuit and the input pin of the anti-reverse circuit;
the resistor R219 is connected in parallel between the input end of the voltage reduction module and the EN pin of the voltage reduction module; one end of the resistor R223 is connected with an EN pin of the voltage reduction module, and the other end of the resistor R223 is grounded;
the positive electrode of the Schottky diode D202 is grounded, and the negative electrode of the Schottky diode D is connected with the output pin of the voltage reduction module;
the output pin of the voltage reduction module is connected with the positive electrode of the energy storage battery through an inductor L201 and a diode D201 respectively;
one end of the capacitor E201 and the capacitor C202 which are connected in parallel is connected between the inductor L201 and the diode D201, and the other end is grounded;
one end of the resistor R220 is connected between the inductor L201 and the diode D201, and the other end of the resistor R is connected with the FB pin of the voltage reduction module;
one end of the resistor R224 is connected with the FB pin of the voltage dropping module, and the other end of the resistor R is grounded;
one end of the resistor R225 is connected with the output end of the charging control circuit; the other end is connected with the base electrode of the triode Q203; the collector electrode of the triode Q203 is connected with the EN pin of the buck module;
one end of the resistor R227 is connected with an IO pin of the main controller, and the other end of the resistor R227 is connected with the emitter of the triode Q203 through a resistor R226 and then grounded;
the base electrode of the triode Q203 is connected between the resistor R227 and the resistor R226 at the same time;
the solar photovoltaic panel is used for charging the energy storage battery, so that the energy storage battery can be kept to continuously supply power to the data acquisition equipment under the condition of power failure of the commercial power, and all-weather power supply to the data acquisition equipment is realized.
2. The power supply system of a data acquisition device of claim 1, wherein: the boost circuit comprises a resistor R236, a resistor R247, a controllable precise voltage stabilizing source TL431, a resistor R237, a resistor R243, a resistor R248, a resistor R234, a resistor R238, a CMOS transistor Q205, a triode Q207, a capacitor E203, a capacitor C207, a resistor R245, a resistor R240, a resistor R249, a boost module, a resistor R239, an inductor L202, a Schottky diode D206, a Schottky diode D205, a capacitor C208, a capacitor E202, a capacitor C206 and a diode D207;
the output end of the anti-reverse circuit is connected with the source electrode of the CMOS tube Q205, one end of the resistor R236 is connected with the source electrode of the CMOS tube Q205, and the other end is connected with the reference electrode of the controllable precise voltage stabilizing source TL 431;
one end of the resistor R247 is connected with a reference electrode of the controllable precise voltage stabilizing source TL431, and the other end of the resistor R247 is connected with the ground; the anode of the controllable precise voltage stabilizing source TL431 is grounded; the cathode of the controllable precise voltage stabilizing source TL431 is connected with the source electrode of the CMOS tube Q205 through a resistor R237;
the resistor R234 is connected in parallel between the source electrode and the grid electrode of the CMOS tube Q205; the grid electrode of the CMOS tube Q205 is connected with the collector electrode of the triode Q207 through a resistor R238;
the positive electrode of the capacitor E203 is connected with the drain electrode of the CMOS tube Q205, and the drain electrode of the CMOS tube Q205 is connected with the positive electrode of the energy storage battery through the Schottky diode D205;
the capacitor C207 is connected in parallel with the two ends of the capacitor E203, one end of the resistor R245 is connected with the capacitor C207, the other end is connected with the IPK pin of the boosting module, and meanwhile, the resistor R239 is connected with the DRC pin of the boosting module;
the VCC pin of the boosting module is connected between the resistor R245 and the capacitor C207, and the CMP pin of the boosting module is grounded through the resistor R249; the TC pin of the boost module is grounded through a capacitor C208;
one end of the inductor L202 is simultaneously connected with a resistor R239 and a resistor R245; the other end is simultaneously connected with the SWC pin of the boost module and the anode of the Schottky diode D206; the cathode of the Schottky diode D206 is connected with the anode of the energy storage battery through a diode D207;
one end of the resistor R240 is connected with the resistor R249, and the other end is connected between the Schottky diode D206 and the diode D207; one end of the capacitor E202 is grounded after being connected in parallel with the capacitor C206, and the other end of the capacitor E is connected with the anode of the diode D207; wherein the anode of the capacitor E202 is connected to the anode of the diode D207.
3. The power supply system of a data acquisition device of claim 1, wherein: the charging control circuit comprises a resistor R216, a resistor R221, a resistor R215, a light emitting diode D203, an operational amplifier U204A, a resistor R222 and a resistor R217;
one end of the resistor R216 is connected with the positive electrode of the energy storage battery, and the other end of the resistor R is connected with the positive input end of the operational amplifier U204A;
one end of the resistor R221 is connected with the positive input end of the operational amplifier U204A, and the other end of the resistor R is grounded;
the resistor R222 is connected in parallel between the positive input end and the output end of the operational amplifier U204A;
the power supply of the operational amplifier U204A is powered by an energy storage battery; the power pin of the operational amplifier U204A is connected with the negative input end of the operational amplifier U204A through a resistor R215, and the negative input end of the operational amplifier U204A is connected with internal hardware and grounded through a light emitting diode D203;
the output end of the operational amplifier U204A is connected with a resistor R222 through a resistor R217.
4. The power supply system of a data acquisition device of claim 1, wherein: the external battery power supply switch comprises a resistor R235, a resistor R246, an operational amplifier U204B, a resistor R244, a resistor R233, a resistor R230, a resistor R228, a resistor R229, a CMOS tube Q204, a diode D204, a capacitor C205, a resistor R231, a triode Q206, a resistor R241 and a resistor R242;
the negative input end of the operational amplifier U204B is internally connected with hardware; the positive input end of the operational amplifier U204B is connected with the output end of the anti-reverse circuit through a resistor R235; simultaneously, the ground is connected to the ground after passing through a resistor R246;
the resistor R244 is connected in parallel between the positive input end and the output end of the operational amplifier U204B; the output end of the operational amplifier U204B is connected with the grid electrode of the CMOS tube Q204 through a resistor R233;
the source electrode of the CMOS tube Q204 is connected with the anode of the energy storage battery; the resistor R230 is connected in parallel between the grid electrode and the source electrode of the CMOS tube Q204;
one end of the resistor R228 connected in parallel with the resistor R229 is connected with the drain electrode of the CMOS tube Q204, and the other end of the resistor R228 is connected with the grid electrode of the CMOS tube Q204 through a capacitor C205;
the anode of the diode D204 is connected with the drain electrode of the CMOS tube Q204, and the cathode of the diode D204 is connected with the power end of the data acquisition equipment;
the grid electrode of the CMOS tube Q204 is connected with the collector electrode of the triode Q206 through a resistor R231;
the resistor R242 is connected in parallel between the base electrode and the emitter electrode of the triode Q206, and the emitter electrode of the triode Q206 is grounded; and the base electrode of the triode Q206 is connected with an IO pin of the main controller through a resistor R241.
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| CN110729891A (en) * | 2019-11-27 | 2020-01-24 | 武汉市国扬科技集团有限公司 | Analog control circuit of optical switch |
| CN112776743B (en) * | 2021-03-08 | 2024-05-17 | 数源科技股份有限公司 | Vehicle-mounted control system using Fabry-Perot capacitor battery |
| CN115865566B (en) * | 2022-12-17 | 2024-06-18 | 中国重汽集团济南动力有限公司 | Gateway controller suitable for commercial car |
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