CN210076207U - Low-power consumption automatic irrigation device - Google Patents
Low-power consumption automatic irrigation device Download PDFInfo
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- CN210076207U CN210076207U CN201920943947.4U CN201920943947U CN210076207U CN 210076207 U CN210076207 U CN 210076207U CN 201920943947 U CN201920943947 U CN 201920943947U CN 210076207 U CN210076207 U CN 210076207U
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- 238000003973 irrigation Methods 0.000 title claims abstract description 21
- 230000002262 irrigation Effects 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000003990 capacitor Substances 0.000 claims description 72
- 238000004891 communication Methods 0.000 claims description 13
- 239000002689 soil Substances 0.000 claims description 12
- 230000003321 amplification Effects 0.000 claims description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 7
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 8
- 238000004146 energy storage Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/12—Technologies relating to agriculture, livestock or agroalimentary industries using renewable energies, e.g. solar water pumping
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Abstract
The utility model relates to an automatic control field provides an automatic irrigation equipment of low-power consumption, including central controller, power supply unit, sensor unit, relay circuit, with relay circuit connection's water pump, power supply unit, sensor unit, relay circuit are connected with central controller respectively. The utility model discloses a photovoltaic power supply circuit is direct for the central controller power supply daytime, and simultaneously for battery charging, photovoltaic power supply circuit is out of work night, then the battery is the central controller power supply, uses the energy of low-power consumption and environmental protection, and when resources are saved, also can accurately detect when need be for the field irrigation.
Description
Technical Field
The utility model relates to an automatic control technical field, in particular to automatic irrigation equipment of low-power consumption.
Background
In the field production, the automatic irrigation technology has been widely used for greenhouses and non-greenhouses, but the traditional controller adopts a storage battery or an external mains supply to supply power for the greenhouses and the non-greenhouses after the voltage is reduced by using a transformer, so that the waste of energy is inevitably increased when the manual labor is reduced, and therefore, a device capable of utilizing renewable environment-friendly energy for supplying power needs to be designed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to improve the not enough that exists among the prior art, provide an automatic irrigation equipment of low-power consumption, adopt the photovoltaic power supply of environmental protection.
In order to realize the purpose of the utility model, the embodiment of the utility model provides a following technical scheme:
the utility model provides an automatic irrigation equipment of low-power consumption, includes central controller, power supply unit, sensor unit, relay circuit, with the water pump of relay circuit connection, power supply unit, sensor unit, relay circuit are connected with central controller respectively.
Further, for better realization the utility model discloses, power supply unit is including the photovoltaic power supply circuit, charging circuit, battery, the low-power consumption output circuit who connects gradually, photovoltaic power supply circuit still is connected with low-power consumption output circuit, low-power consumption output circuit is connected with central controller.
Further, in order to better realize the utility model, the charging circuit comprises a resistor R1-resistor R5, a thermistor RL1, a capacitor C1-capacitor C3, a diode D1-diode D4, an inductor L1 and a charging chip U1, wherein the charging chip U1 is LT 3652; the anode of the diode D1 is connected with the photovoltaic power circuit, and the cathode of the diode D1 is respectively connected with one end of the capacitor C1, one end of the resistor R1 and V of the charging chip U1IN、
The pin is connected, the other end of the capacitor C1 is grounded, and the other end of the resistor R1 is respectively connected with the V of the charging chip U1IN_REGOne end of the pin and one end of the resistor R2 are connected, and the other end of the resistor R2 is grounded; charging deviceThe SW pin of the electric chip U1 is respectively connected with the cathode of the diode D2, one end of the capacitor C2 and one end of the inductor L1, the anode of the diode D2 is grounded, the BOOST pin of the charging chip U1 is respectively connected with the other end of the capacitor C2 and the cathode of the diode D3, the SENSE pin of the charging chip U1 is respectively connected with the other end of the inductor L1 and one end of the resistor R3, the BAT pin of the charging chip U1 is respectively connected with one end of the resistor R4, the anode of the diode D3 and one end of the capacitor C3, the other end of the capacitor C3 is grounded, and the V pin of the charging chip U1 is connected with the cathode ofFBThe pins are respectively connected with the other end of the resistor R4 and one end of the resistor R5, the other end of the resistor R5 is grounded, the NCT pin of the charging chip U1 is connected with one end of the thermistor RL1, and the other end of the thermistor RL1 is connected with the negative electrode of the storage battery; the anode of the storage battery is respectively connected with the BAT pin of the charging chip U1, the other end of the resistor R3 and the anode of the diode D4, and the cathode of the diode D4 is respectively connected with the V of the charging chip U1IN、
And connecting the pins.
Further, in order to better implement the present invention, the low power consumption output circuit includes resistors R6-R9, capacitors C4-C6, MOS transistors Q1 and a diode D5, the resistors R6 are respectively connected in parallel with the photovoltaic power circuit and the battery, one end of the resistor R6 is connected to one end of the capacitor C4, the other end of the resistor R6 is connected to the capacitor C5, the other end of the capacitor C4 is connected to one end of the resistor R7 and the gate of the MOS transistor Q1, the other end of the capacitor C5 is connected to the other end of the resistor R7 and the source of the MOS transistor Q1, the drain of the MOS transistor Q1 is connected to one end of the resistor R8, the anode of the diode D5 and one end of the resistor R9, one end of the capacitor C6 is connected to the other end of the resistor R8 and the cathode of the diode D5, and the other ends of the resistor R9 and the capacitor C6 are all grounded.
Further, for better realization the utility model discloses, central controller adopts the model to be STM32F 101's singlechip.
Further, in order to better realize the utility model, the sensor unit comprises an air temperature sensor connected with the central controller, the air temperature sensor comprises a temperature sensor with model PT100 and a pre-amplification circuit, the pre-amplification circuit comprises a resistor R10-a resistor R16, a sliding resistor RL2, a capacitor C7, a capacitor C8 and an amplifier U1A; the temperature sensor PT100 is respectively connected with one end of a resistor R10, one end of a capacitor C7 and one end of a resistor R13, the other end of a resistor R10 is connected with one end of a resistor R11, the other end of a capacitor C7 and the other end of a resistor R11 are respectively connected with a forward input end of an amplifier U1A, a reverse input end of the amplifier U1A is respectively connected with one end of a capacitor C8 and one end of a resistor R12, and an output end of the amplifier U1A is respectively connected with the other end of the capacitor C8 and one end of a resistor R14; the other end of the resistor R13 is connected with one end of the sliding resistor RL2, the other end of the resistor R12 is connected with the other end of the sliding resistor RL2 and one end of the resistor R16 respectively, the other end of the resistor R16 is connected with one end of the resistor R15, and the other end of the resistor R14 is connected with the other end of the resistor R15 and an I/O interface of the single chip microcomputer respectively.
Further, for better realization the utility model discloses, the sensor unit includes the soil moisture sensor who is connected with central controller, soil moisture sensor includes that the model is DHT 11's humidity transducer, resistance R17, DHT 11's DATA pin respectively with resistance R17, the I/O interface connection of singlechip.
Further, for better realization the utility model discloses, still include the LCD display screen who is connected with central controller, the model of LCD display screen is LCD 1602.
Further, in order to better realize the utility model, the relay circuit comprises a resistor R18-a resistor R21, a sliding resistor RL4, an amplifier U2A, an amplifier U2B, an amplifier U2C, a diode D6, a triode Q2 and a relay K; the positive input end of the amplifier U2A is connected with an I/O interface of the single chip microcomputer, the reverse input end of the amplifier U2A is connected with one end of a resistor R18, and the output end of the amplifier U2A is connected with the other end of the resistor R18, the positive input end of the amplifier U2B and the reverse input end of the amplifier U2C respectively; the forward input end of the amplifier U2C is connected with one end of a resistor R20 and one end of a sliding resistor RL4 respectively, the other end of the resistor R20 is grounded, the other end of the sliding resistor RL4 is connected with one end of a resistor R19 and the reverse input end of the amplifier U2B respectively, the output end of the amplifier U2C is connected with the output end of the amplifier U2B and one end of a resistor R21 respectively, the other end of the resistor R21 is connected with a base electrode of a triode Q2, the collector electrode of the triode Q2 and the other end of the resistor R19 are connected with a relay K respectively, a diode D6 is connected with the relay K in parallel, and the relay K is connected with a.
Furthermore, in order to better realize the utility model, the system also comprises a wireless communication unit connected with the central controller, and the wireless communication unit is connected with an intelligent terminal; the wireless communication unit is a low-power consumption GPRS wireless communication circuit based on the SIM 800.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a photovoltaic power supply circuit is direct for the central controller power supply daytime, and simultaneously for battery charging, photovoltaic power supply circuit is out of work night, then the battery is the central controller power supply, uses the energy of low-power consumption and environmental protection, and when resources are saved, also can accurately detect when need be for the field irrigation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a block diagram of the low power consumption automatic irrigation device of the present invention;
FIG. 2 is a schematic diagram of the CPU of the present invention;
FIG. 3 is a schematic diagram of the charging circuit and the storage battery circuit of the present invention;
FIG. 4 is a schematic diagram of the low power consumption output circuit of the present invention;
FIG. 5 is a schematic diagram of the air temperature sensor circuit of the present invention;
FIG. 6 is a schematic diagram of a soil moisture sensor circuit according to the present invention;
FIG. 7 is a schematic circuit diagram of the LCD display screen of the present invention;
fig. 8 is a schematic diagram of the relay circuit of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Example 1:
the utility model discloses a following technical scheme realizes, as shown in fig. 1, an automatic irrigation equipment of low-power consumption, including central controller, power supply unit, sensor unit, relay circuit, with relay circuit connection's water pump, power supply unit, sensor unit, relay circuit are connected with central controller respectively. Wherein power supply unit is central controller, sensor unit, relay circuit power supply, and sensor unit detects farmland ambient temperature and soil moisture, transmits the testing result for central controller, and central controller judges whether need open the water pump for the field irrigation according to the data that have set for in advance.
Furthermore, the power supply unit comprises a photovoltaic power circuit, a charging circuit, a storage battery and a low-power-consumption output circuit which are sequentially connected, the photovoltaic power circuit is also connected with the low-power-consumption output circuit, and the low-power-consumption output circuit is connected with the central controller. The photovoltaic power supply circuit directly supplies power to the central controller in the daytime and charges the storage battery, and the storage battery supplies power to the central controller when the photovoltaic power supply circuit does not work at night. As shown in fig. 2, the central controller adopts a single chip microcomputer with the model number of STM32F 101.
As shown in fig. 3, the charging circuit includes a resistor R1-a resistor R5, a thermistor RL1, a capacitor C1-a capacitor C3, a diode D1-a diode D4, an inductor L1, and a charging chip U1, wherein the charging chip U1 is LT 3652; the anode of the diode D1 is connected with the photovoltaic power circuit, and the cathode of the diode D1 is respectively connected with one end of the capacitor C1, one end of the resistor R1 and V of the charging chip U1IN、The pin is connected, the other end of the capacitor C1 is grounded, and the other end of the resistor R1 is respectively connected with the V of the charging chip U1IN_REGOne end of the pin and one end of the resistor R2 are connected, and the other end of the resistor R2 is grounded; the SW pin of the charging chip U1 is respectively connected with the cathode of the diode D2, one end of the capacitor C2 and one end of the inductor L1, the anode of the diode D2 is grounded, the BOOST pin of the charging chip U1 is respectively connected with the other end of the capacitor C2 and the cathode of the diode D3, the SENSE pin of the charging chip U1 is respectively connected with the other end of the inductor L1 and one end of the resistor R3, the BAT pin of the charging chip U1 is respectively connected with one end of the resistor R4, the anode of the diode D3 and one end of the capacitor C3, the other end of the capacitor C3 is grounded, and the V pin of the charging chip U1 is connected with the cathode ofFBThe pins are respectively connected with the other end of the resistor R4 and one end of the resistor R5, the other end of the resistor R5 is grounded, the NCT pin of the charging chip U1 is connected with one end of the thermistor RL1, and the other end of the thermistor RL1 is connected with the negative electrode of the storage battery; the anode of the storage battery is respectively connected with the BAT pin of the charging chip U1, the other end of the resistor R3 and the anode of the diode D4, and the cathode of the diode D4 is respectively connected with the V of the charging chip U1IN、
And connecting the pins.
It should be noted that the electric energy output by the photovoltaic power circuit is used for charging the storage battery through the charging circuit, or is directly used for supplying power to the single chip microcomputer through the low-power output circuit. The charging chip LT3652 in the charging circuit accepts a wide range of input from 4.95V to 32V, and the current for charging the storage battery is up to 2A. At VIN_REGThe resistor R1 and the resistor R2 are arranged at the pins for voltage division, so that the minimum input voltage can be set, and the output peak voltage is set for the photovoltaic power circuit in this way. When V isIN_REGAnd when the pin is lower than the voltage stabilization threshold, the charging current of the storage battery is reduced. Since the output voltage of the photovoltaic power supply circuit is susceptible to the ambient temperature, a thermistor RL1 is connected to the NCT pin for temperature monitoring and compensation.
Furthermore, as shown in fig. 5, the low power consumption output circuit includes resistors R6 to R9, capacitors C4 to C6, a MOS transistor Q1, and a diode D5, the resistor R6 is respectively connected in parallel with the photovoltaic power circuit and the battery, one end of the resistor R6 is connected to one end of the capacitor C4, the other end of the resistor R6 is connected to the capacitor C5, the other end of the capacitor C4 is respectively connected to one end of the resistor R7 and the gate of the MOS transistor Q1, the other end of the capacitor C5 is respectively connected to the other end of the resistor R7 and the source of the MOS transistor Q1, the drain of the MOS transistor Q1 is respectively connected to one end of the resistor R8, the anode of the diode D5, and one end of the resistor R9, one end of the capacitor C6 is respectively connected to the other end of the resistor R6 and the cathode of the diode D6, and the other end of the resistor R6 are all grounded.
It should be noted that the capacitor C6 charges for energy storage, when the voltage of the capacitor C6 drops to a specific lower limit value, the single chip microcomputer makes a command to enter a low power consumption mode, and the single chip microcomputer, the sensor unit, the relay circuit and the like enter a low power consumption mode; when the voltage of the capacitor C6 is greater than a specific lower limit value, the single chip microcomputer sends a normal working mode command, the single chip microcomputer is awakened from a low power consumption mode, and the single chip microcomputer, the sensor unit, the relay circuit and the like are in a normal working mode.
Specifically, the resistor R8 and the resistor R9 are used for consuming the electric energy of the capacitor C6; the resistor R6 and the resistor R7 are matched resistors, so that the anti-interference performance of the low-power-consumption output circuit is improved; the capacitor C4 and the capacitor C5 are blocking capacitors and filter electric energy entering the low-power-consumption output circuit. When photovoltaic power supply circuit or battery supplied energy, MOS pipe Q1's grid received drive signal, and MOS pipe Q1 switches on, and the current ratio of charging is great this moment, and energy storage capacitor C6's voltage is filled fast and is equivalent with mains voltage VCC, is generally 3.3V ~ 5V, can regard as singlechip wake-up signal. When the grid of the MOS transistor Q1 does not receive a driving signal, the MOS transistor Q1 is cut off, namely, the photovoltaic power supply circuit or the storage battery is not powered temporarily, and the singlechip, the sensor unit, the relay circuit and the like enter a low-power-consumption mode when the voltage of the capacitor C6 is reduced to a specific lower limit value. When the solar photovoltaic power supply circuit enters the night stage in the daytime, the solar energy received by the photovoltaic power supply circuit is gradually decreased, and if the solar photovoltaic power supply circuit is directly switched to the storage battery to supply power to the central controller, the situation of power supply short circuit is easy to occur, so that the device is damaged. Therefore, a low-power-consumption output circuit is added, when the vehicle enters night, the driving signal output by the photovoltaic power circuit is gradually reduced, the voltage of the energy storage capacitor C6 is also gradually reduced, and the single chip microcomputer and the like enter a low-power-consumption mode.
Furthermore, the sensor unit comprises an air temperature sensor connected with the central controller, as shown in fig. 5, the air temperature sensor comprises a temperature sensor with model number PT100, and a pre-amplification circuit, wherein the pre-amplification circuit comprises resistors R10-R16, a sliding resistor RL2, a capacitor C7, a capacitor C8, and an amplifier U1A; the temperature sensor PT100 is respectively connected with one end of a resistor R10, one end of a capacitor C7 and one end of a resistor R13, the other end of a resistor R10 is connected with one end of a resistor R11, the other end of a capacitor C7 and the other end of a resistor R11 are respectively connected with a forward input end of an amplifier U1A, a reverse input end of the amplifier U1A is respectively connected with one end of a capacitor C8 and one end of a resistor R12, and an output end of the amplifier U1A is respectively connected with the other end of the capacitor C8 and one end of a resistor R14; the other end of the resistor R13 is connected with one end of the sliding resistor RL2, the other end of the resistor R12 is connected with the other end of the sliding resistor RL2 and one end of the resistor R16 respectively, the other end of the resistor R16 is connected with one end of the resistor R15, and the other end of the resistor R14 is connected with the other end of the resistor R15 and a PA0 pin of the single chip microcomputer respectively.
It should be noted that the resistor R10, the resistor R11, and the capacitor C7 are connected to the output terminal of the temperature sensor PT100, and are used to isolate the null shift of the PT100, so as to implement phase compensation, and the amplifier U1A is AD 829. Because the PT100 is used for detecting the temperature of air, the detection accuracy can be influenced by environmental factors, and therefore, the pre-amplification circuit is added to compensate and put down the initial signal detected by the PT100 sensor, so that the detected temperature signal is more accurate.
Furthermore, the sensor unit includes a soil humidity sensor connected to the central controller, as shown in fig. 6, the soil humidity sensor includes a humidity sensor of DHT11 type and a resistor R17, and a DATA pin of the DHT11 is connected to the resistor R17 and a PA1 pin of the single chip microcomputer, respectively.
Further, as shown in fig. 7, the system further comprises an LCD display screen connected to the central controller, wherein the LCD display screen is of a type LCD1602, and is used for displaying data detected by the temperature sensor and the humidity sensor.
Further, as shown in fig. 8, the relay circuit includes resistors R18 to R21, a sliding resistor RL4, an amplifier U2A, an amplifier U2B, an amplifier U2C, a diode D6, a transistor Q2, and a relay K; the forward input end of the amplifier U2A is connected with a pin PC0 of the single chip microcomputer, the reverse input end of the amplifier U2A is connected with one end of a resistor R18, and the output end of the amplifier U2A is respectively connected with the other end of a resistor R18, the forward input end of an amplifier U2B and the reverse input end of an amplifier U2C; the forward input end of the amplifier U2C is connected with one end of a resistor R20 and one end of a sliding resistor RL4 respectively, the other end of the resistor R20 is grounded, the other end of the sliding resistor RL4 is connected with one end of a resistor R19 and the reverse input end of the amplifier U2B respectively, the output end of the amplifier U2C is connected with the output end of the amplifier U2B and one end of a resistor R21 respectively, the other end of the resistor R21 is connected with a base electrode of a triode Q2, the collector electrode of the triode Q2 and the other end of the resistor R19 are connected with a relay K respectively, a diode D6 is connected with the relay K in parallel, and the relay K is connected with a.
It should be noted that the water pump is connected with a water delivery pipe embedded in soil and a spraying type water pipe standing in the air, and if the relay circuit shown in fig. 8 is connected with the water pump for controlling the water delivery pipe embedded in soil, when the soil humidity is not within a preset normal range, a pin of the single chip microcomputer PC0 sends a low level signal, at the moment, the triode Q2 is switched on, the normally closed contact of the relay K is closed, and the water pump is started to irrigate the soil.
Similarly, the relay circuit connected with the spraying type water pipe standing in the air is the same as that in fig. 8, the working principle is the same, and when the air temperature is not within the preset normal range, the relay K controls the water pump to be started, water is sprayed to the air, and the air temperature is reduced.
Furthermore, the intelligent terminal also comprises a wireless communication unit connected with the central controller, and the wireless communication unit is connected with an intelligent terminal; the wireless communication unit is a low-power consumption GPRS wireless communication circuit based on the SIM 800. The singlechip sends the data detected by the temperature sensor and the humidity sensor and the information of the water pump controlled by the relay to start water delivery to the intelligent terminal through the wireless communication unit at regular time for users to check.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A low-power consumption automatic irrigation device is characterized in that: the water pump system comprises a central controller, a power supply unit, a sensor unit, a relay circuit and a water pump connected with the relay circuit, wherein the power supply unit, the sensor unit and the relay circuit are respectively connected with the central controller;
the power supply unit comprises a photovoltaic power circuit, a charging circuit, a storage battery and a low-power-consumption output circuit which are sequentially connected, the photovoltaic power circuit is further connected with the low-power-consumption output circuit, and the low-power-consumption output circuit is connected with the central controller.
2. The low power consumption automatic irrigation device according to claim 1, characterized in that: the charging circuit comprises a resistor R1-a resistor R5, a thermistor RL1, a capacitor C1-a capacitor C3, a diode D1-a diode D4, an inductor L1 and a charging chip U1, wherein the charging chip U1 is LT3652 in model number;
the anode of the diode D1 is connected with the photovoltaic power circuit, and the cathode of the diode D1 is respectively connected with one end of the capacitor C1, one end of the resistor R1 and V of the charging chip U1IN、
The pin is connected, the other end of the capacitor C1 is grounded, and the other end of the resistor R1 is respectively connected with the V of the charging chip U1IN_REGOne end of the pin and one end of the resistor R2 are connected, and the other end of the resistor R2 is grounded;
the SW pin of the charging chip U1 is respectively connected with the cathode of the diode D2, one end of the capacitor C2 and one end of the inductor L1, the anode of the diode D2 is grounded, the BOOST pin of the charging chip U1 is respectively connected with the other end of the capacitor C2 and the cathode of the diode D3, the SENSE pin of the charging chip U1 is respectively connected with the other end of the inductor L1 and one end of the resistor R3, the BAT pin of the charging chip U1 is respectively connected with one end of the resistor R4, the anode of the diode D3 and one end of the capacitor C3, the other end of the capacitor C3 is grounded, and the V pin of the charging chip U1 is connected with the cathode ofFBThe pin is respectively connected with the other end of the resistor R4 and one end of the resistor R5, the other end of the resistor R5 is grounded, and the NCT pin of the charging chip U1One end of a thermistor RL1 is connected, and the other end of the thermistor RL1 is connected with the negative electrode of the storage battery;
the anode of the storage battery is respectively connected with the BAT pin of the charging chip U1, the other end of the resistor R3 and the anode of the diode D4, and the cathode of the diode D4 is respectively connected with the V of the charging chip U1IN、
And connecting the pins.
3. The low power consumption automatic irrigation device according to claim 1, characterized in that: the low-power-consumption output circuit comprises resistors R6-R9, capacitors C4-C6, a MOS tube Q1 and a diode D5, wherein the resistor R6 is respectively connected with the photovoltaic power circuit and the storage battery in parallel, one end of a resistor R6 is connected with one end of a capacitor C4, the other end of the resistor R6 is connected with a capacitor C5, the other end of the capacitor C4 is respectively connected with one end of a resistor R7 and a grid electrode of the MOS tube Q1, the other end of a capacitor C5 is respectively connected with the other end of a resistor R7 and a source electrode of the MOS tube Q1, a drain electrode of the MOS tube Q1 is respectively connected with one end of a resistor R8, an anode of a diode D5 and one end of a resistor R9, one end of the capacitor C6 is respectively connected with the other end of the resistor R6 and a cathode of the diode D6, and the other end of the resistor R6.
4. A low power consumption automatic irrigation device according to any one of claims 1-3, characterized in that: the central controller adopts a single chip microcomputer with the model of STM32F 101.
5. The low power consumption automatic irrigation device according to claim 4, characterized in that: the sensor unit comprises an air temperature sensor connected with a central controller, the air temperature sensor comprises a temperature sensor with the model number PT100 and a pre-amplification circuit, and the pre-amplification circuit comprises resistors R10-R16, a sliding resistor RL2, a capacitor C7, a capacitor C8 and an amplifier U1A;
the temperature sensor PT100 is respectively connected with one end of a resistor R10, one end of a capacitor C7 and one end of a resistor R13, the other end of a resistor R10 is connected with one end of a resistor R11, the other end of a capacitor C7 and the other end of a resistor R11 are respectively connected with a forward input end of an amplifier U1A, a reverse input end of the amplifier U1A is respectively connected with one end of a capacitor C8 and one end of a resistor R12, and an output end of the amplifier U1A is respectively connected with the other end of the capacitor C8 and one end of a resistor R14;
the other end of the resistor R13 is connected with one end of the sliding resistor RL2, the other end of the resistor R12 is connected with the other end of the sliding resistor RL2 and one end of the resistor R16 respectively, the other end of the resistor R16 is connected with one end of the resistor R15, and the other end of the resistor R14 is connected with the other end of the resistor R15 and an I/O interface of the single chip microcomputer respectively.
6. The low power consumption automatic irrigation device according to claim 5, characterized in that: the sensor unit comprises a soil humidity sensor connected with the central controller, the soil humidity sensor comprises a humidity sensor with the model of DHT11 and a resistor R17, and a DATA pin of the DHT11 is connected with the resistor R17 and an I/O interface of the single chip microcomputer respectively.
7. The low power consumption automatic irrigation device according to claim 5, characterized in that: the intelligent control system also comprises an LCD display screen connected with the central controller, wherein the model of the LCD display screen is LCD 1602.
8. The low power consumption automatic irrigation device according to claim 5, characterized in that: the relay circuit comprises resistors R18-R21, a sliding resistor RL4, an amplifier U2A, an amplifier U2B, an amplifier U2C, a diode D6, a triode Q2 and a relay K;
the positive input end of the amplifier U2A is connected with an I/O interface of the single chip microcomputer, the reverse input end of the amplifier U2A is connected with one end of a resistor R18, and the output end of the amplifier U2A is connected with the other end of the resistor R18, the positive input end of the amplifier U2B and the reverse input end of the amplifier U2C respectively;
the forward input end of the amplifier U2C is connected with one end of a resistor R20 and one end of a sliding resistor RL4 respectively, the other end of the resistor R20 is grounded, the other end of the sliding resistor RL4 is connected with one end of a resistor R19 and the reverse input end of the amplifier U2B respectively, the output end of the amplifier U2C is connected with the output end of the amplifier U2B and one end of a resistor R21 respectively, the other end of the resistor R21 is connected with a base electrode of a triode Q2, the collector electrode of the triode Q2 and the other end of the resistor R19 are connected with a relay K respectively, a diode D6 is connected with the relay K in parallel, and the relay K is connected with a.
9. The low power consumption automatic irrigation device according to claim 5, characterized in that: the intelligent terminal also comprises a wireless communication unit connected with the central controller, and the wireless communication unit is connected with an intelligent terminal; the wireless communication unit is a low-power consumption GPRS wireless communication circuit based on the SIM 800.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920943947.4U CN210076207U (en) | 2019-06-21 | 2019-06-21 | Low-power consumption automatic irrigation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920943947.4U CN210076207U (en) | 2019-06-21 | 2019-06-21 | Low-power consumption automatic irrigation device |
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| CN210076207U true CN210076207U (en) | 2020-02-18 |
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| CN201920943947.4U Expired - Fee Related CN210076207U (en) | 2019-06-21 | 2019-06-21 | Low-power consumption automatic irrigation device |
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