Low power consumption intelligent irrigation system
By using a low-power irrigation device and wireless communication, the problem of frequent power replacements in existing smart irrigation systems has been solved, achieving long equipment life, low cost, and efficient management.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO HANCI ELECTRICAL CO LTD
- Filing Date
- 2025-08-21
- Publication Date
- 2026-07-14
AI Technical Summary
In existing smart irrigation systems, devices such as irrigation controllers, soil sensors, and air sensors require frequent power supply replacements or external power sources, increasing usage costs and maintenance workload, especially in large-area irrigation areas.
The irrigation device, designed for low power consumption, is powered by dry cell batteries and converted to a 3.3V operating voltage via a first DC boost circuit. It then transmits data to the irrigation gateway via RF signals. The irrigation gateway uploads the data to the cloud to control the irrigation device, supporting wireless communication and remote monitoring.
It extends equipment lifespan, reduces battery replacement frequency and operating costs, improves system adaptability and stability, and enables flexible equipment connection and efficient irrigation management.
Smart Images
Figure CN224482460U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of agricultural and garden automation technology, and in particular to a low-power intelligent irrigation system. Background Technology
[0002] With social development and technological advancements, irrigation technology is constantly evolving. Traditional irrigation methods mainly rely on manual operation or simple timed devices, but these have some shortcomings. For example, manual irrigation not only consumes a lot of manpower but also makes it difficult to accurately control irrigation time and water volume, easily leading to water waste or poor plant growth. While traditional simple timed irrigation controllers can reduce manual operation to some extent, they cannot dynamically adjust the irrigation plan based on actual conditions such as soil moisture and weather conditions, resulting in inaccurate irrigation. For example, continuing to water according to the plan after rainfall or continuing to irrigate when the soil moisture is already sufficient not only wastes water resources but may also damage plant roots.
[0003] In recent years, with the development of the Internet of Things, sensor technology, and communication technology, intelligent irrigation systems have gradually emerged. These systems collect data such as soil moisture, temperature, and meteorological information through sensors, and transmit the data to a central control system or cloud platform using communication technology. The system then automatically controls the operation of irrigation equipment according to preset rules or algorithms, realizing the automation and intelligence of irrigation. A relevant prior art is the Chinese patent application "Low-Power Intelligent Irrigation System Based on Radio Frequency Networking Technology," application number: CN201921956301.6, which discloses an irrigation system including an irrigation decision module, an irrigation controller located in the irrigation area, a soil factor decision module, and an air factor decision module. The soil factor decision module submits soil irrigation decisions to the irrigation decision module based on the soil conditions in the irrigation area; the air factor decision module submits weather forecasts to the irrigation decision module based on the air conditions in the irrigation area; the irrigation decision module is connected to a rainfall information sensor to receive the current rainfall; and the irrigation decision module decides whether to initiate irrigation operations in the irrigation area based on the received soil irrigation decisions and weather forecasts.
[0004] However, existing smart irrigation systems still have some limitations. Although the aforementioned patent application adopts a low-power smart irrigation system, the irrigation controller, soil sensor, and air sensor used may still require frequent power supply replacements or external power, especially in large-area irrigation areas, which increases the cost of use and maintenance workload. Utility Model Content
[0005] The technical problem to be solved by this application is to provide a low-power intelligent irrigation system. Through further optimized low-power design, the reliability of the product is improved, it has the advantage of cost-effectiveness, and enhances the user experience.
[0006] The technical solution adopted in this application is: a low-power intelligent irrigation system, including an APP, cloud, irrigation gateway, soil sensor and irrigation device. The soil sensor and irrigation device transmit data with the irrigation gateway through RF signals. The irrigation gateway uploads data to the cloud and obtains the synchronized data from the cloud to control the irrigation device.
[0007] The irrigation device includes an irrigation chip, a second radio frequency chip, and a DC boost circuit. The second radio frequency chip is connected to the irrigation chip. The irrigation device is powered by a dry cell battery. The supply voltage of the irrigation device is 3V, and the operating voltage of the irrigation device is 3.3V. The supply voltage of the irrigation device is converted into the operating voltage of the irrigation device through the first DC boost circuit.
[0008] Compared with existing technologies, the advantages of this application are as follows: First, the irrigation device in this application is designed to operate at a 3.3V working voltage. This low-power design not only extends the service life of the equipment and reduces the frequency of battery replacement, but also lowers the operating costs. The irrigation device is powered by dry cell batteries, a simple, low-cost, and easy-to-replace and maintain power supply method suitable for use in situations without a stable power supply, thus reducing the overall system cost. The first DC boost circuit converts the 3V supply voltage to a 3.3V operating voltage. This circuit design improves energy conversion efficiency, reduces energy loss, and thus lowers power consumption to a certain extent. Simultaneously, it ensures that the device can operate normally under lower supply voltages, enhancing the system's adaptability and stability.
[0009] Secondly, the soil sensor and irrigation device transmit data to the irrigation gateway via RF signals. This wireless communication method makes the connection between devices more flexible, free from wiring limitations, and facilitates installation and deployment in various complex environments, improving the system's applicability and scalability. The irrigation gateway can upload data to the cloud and obtain synchronized data from the cloud to control the irrigation device, realizing remote monitoring and management of the irrigation system. Users can view soil moisture, temperature, and other information anytime, anywhere via a mobile app and adjust irrigation plans according to actual conditions, improving the intelligence level of irrigation and the convenience of management.
[0010] Preferably, the irrigation chip is model HC32L90, and the second radio frequency chip is model CMT2300A. The irrigation chip in the watering device uses the HC32L90 model, which is an ultra-low power microcontroller suitable for battery-powered devices. It effectively reduces power consumption, extends the device's lifespan, and reduces the frequency of battery replacements. The second radio frequency chip uses the CMT2300A model, which features low power consumption and is suitable for use in wireless communication devices. It can further reduce the overall power consumption of the watering device while ensuring communication performance.
[0011] In this application, the selected HC32L90 irrigation chip and CMT2300A RF chip are both mature products with good performance and reliability, ensuring the stable operation of the entire irrigation system. The ultra-low power consumption design allows for stable operation for one year using battery power.
[0012] In this application, the irrigation gateway is the central decision-making unit, the irrigation device is the execution unit, and the soil sensor is the environmental monitoring unit. It also includes peripheral circuits such as power circuits, valves, indicator lights, and buttons. This application can monitor soil temperature and humidity, allow users to preset irrigation plans, and acquire weather data from the cloud to achieve automatic irrigation. Users can set irrigation plans via an app to control the irrigation device.
[0013] In some embodiments of this application, the irrigation gateway includes a control chip and a first radio frequency chip, and the control chip and the first radio frequency chip are connected.
[0014] Preferably, the control chip is an RTL8720cm chip, and the first radio frequency chip is a CMT2300A chip.
[0015] The RTL8720cm is a highly integrated single-chip system manufactured by Realtek. It integrates Wi-Fi and Bluetooth capabilities, making it suitable for various IoT applications and providing robust communication capabilities for irrigation gateways.
[0016] The CMT2300A RF chip ensures stable wireless communication with the irrigation system and soil sensor, guaranteeing the reliability of data transmission.
[0017] In some embodiments of this application, the irrigation gateway is supplied with a voltage of 5V or 100V-240V, and operates at 3.3V. The irrigation gateway includes a step-down module, through which the supply voltage is output as the operating voltage. In this application, the irrigation gateway supports a wide voltage input range of 100V-240V, or a 5V USB adapter input. The step-down module stably converts the 5V or 100V-240V supply voltage to a 3.3V operating voltage, ensuring stable operation of the irrigation gateway.
[0018] In some embodiments of this application, the irrigation device includes a valve, an irrigation chip is connected to the valve and controls the opening and closing of the valve, and the irrigation device is powered by two dry cell batteries.
[0019] The HC32L90 is a high-performance, low-power 32-bit microcontroller. Powered by dry-cell batteries and incorporating a low-power irrigation chip, it extends equipment lifespan and reduces maintenance costs. The irrigation chip directly controls valve operation, enabling precise irrigation control based on real-time data such as soil moisture and weather conditions, thus improving irrigation efficiency.
[0020] In some embodiments of this application, the soil sensor includes a sensing chip and a third radio frequency chip, and the sensing chip and the third radio frequency chip are connected.
[0021] Preferably, the sensing chip is model HC32L90 and the third RF chip is CMT2300A.
[0022] The HC32L90, a low-power sensing chip, combined with the CMT2300A RF chip, ensures stable operation of the soil sensor in low-power mode while providing high-precision soil moisture and temperature data. The CMT2300A RF chip guarantees stable wireless communication between the soil sensor and the irrigation gateway, ensuring reliable data transmission.
[0023] In this application, the control chip, irrigation chip, and sensing chip are each connected to buttons and indicator light groups. The buttons allow users to easily operate each chip, while the indicator light groups can intuitively reflect the status of each chip.
[0024] In some embodiments of this application, the soil sensor includes a sensing capacitor, a thermistor, and a photoresistor. The soil sensor is at least partially inserted into the soil. The thermistor detects the soil temperature, the photoresistor acquires the brightness of the environment to be detected, and the sensing capacitor acquires the soil moisture.
[0025] Preferably, the photoresistor uses a GL5528 photosensitive element.
[0026] By using a sensing capacitor to obtain soil moisture, a thermistor to detect soil temperature, and a photoresistor (GL5528) to obtain ambient light, comprehensive environmental monitoring data is provided, offering a more scientific basis for irrigation decisions. This multi-parameter monitoring enables the irrigation system to comprehensively determine whether irrigation is needed based on soil moisture, temperature, and light conditions, improving irrigation accuracy and conserving water resources.
[0027] In some embodiments of this application, the soil sensor includes a logic chip connected to a sensing capacitor.
[0028] Preferably, the logic gate chip is a 74LVC1G86GW logic gate chip.
[0029] The 74LVC1G86GW logic gate chip is a logic gate chip mainly used to implement digital logic operations. It can be used in conjunction with other sensors (such as inductive capacitors) to process the digital signals output by the sensors.
[0030] In some embodiments of this application, the soil sensor is supplied with a power supply voltage of 3V and operates at a voltage of 3.3V. The power supply voltage of the soil sensor is converted into its operating voltage via a second DC boost circuit. This power conversion design improves energy conversion efficiency, reduces energy loss, and further lowers the system's power consumption.
[0031] In some embodiments of this application, the irrigation gateway transmits data with the cloud via MQTT or HTTPS protocols, and transmits data with the APP via MQTT or HTTPS protocols. Both MQTT and HTTPS are mature data transmission protocols that ensure efficient and secure data transmission between the cloud and the APP. Users can view soil moisture, temperature, and other information anytime, anywhere via the mobile APP, and adjust irrigation plans according to actual conditions, improving the system's intelligence and management convenience.
[0032] In some embodiments of this application, the irrigation chip and the second radio frequency chip communicate using the SPI protocol; the control chip and the first radio frequency chip also communicate using the SPI protocol. The SPI protocol is a high-speed, full-duplex communication protocol that enables rapid data transmission between the irrigation chip and the radio frequency chip, improving the system's response speed.
[0033] Based on common knowledge in the field, the above-described embodiments can be combined arbitrarily. Attached Figure Description
[0034] The present application will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present application. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.
[0035] Figure 1 This is a schematic diagram illustrating the principle of this application;
[0036] Figure 2 This is a schematic diagram illustrating the principle of the irrigation gateway in this application;
[0037] Figure 3 This is a schematic diagram of the irrigation device in this application;
[0038] Figure 4 This is a schematic diagram of the principle of the soil sensor in this application.
[0039] The specific explanations of the reference numerals in the attached diagram are as follows: 1. APP; 2. Cloud; 3. Irrigation gateway; 4. Irrigator; 5. Soil sensor; 6. Control chip; 7. First radio frequency chip; 8. Step-down module;
[0040] 11. Irrigation chip; 12. Second radio frequency chip; 13. First DC boost circuit; 14. Valve;
[0041] 21. Sensor chip; 22. Third RF chip; 23. Second DC boost circuit. Detailed Implementation
[0042] The present application will now be described in detail with reference to the accompanying drawings.
[0043] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0044] Low-power intelligent irrigation system, Example 1 as follows Figure 1 , Figure 3 The system includes an app 1, a cloud platform 2, an irrigation gateway 3, a soil sensor 5, and an irrigation device 4. The soil sensor 5 and the irrigation device 4 transmit data to the irrigation gateway 3 via RF signals. The irrigation gateway uploads data to the cloud platform 2 and receives synchronized data from the cloud platform 2 to control the irrigation device 4. This wireless communication method allows for more flexible connections between devices, eliminating wiring limitations and facilitating installation and deployment in various complex environments, thus improving the system's applicability and scalability. The irrigation gateway 3 can upload data to the cloud platform 2 and receive synchronized data from the cloud platform 2 to control the irrigation device 4, enabling remote monitoring and management of the irrigation system. Users can view soil moisture, temperature, and other information anytime, anywhere via the mobile app 1 and adjust irrigation plans according to actual conditions, improving the intelligence level of irrigation and the convenience of management.
[0045] The irrigation device 4 includes an irrigation chip 11, a second radio frequency chip 12, and a DC boost circuit. The irrigation chip 11 is an HC32L90, and the second radio frequency chip is a CMT2300A. The second radio frequency chip 12 is connected to the irrigation chip 11. The irrigation chip 11 in the irrigation device 4 uses the HC32L90 model, which is an ultra-low power microcontroller suitable for battery-powered devices. It can effectively reduce power consumption, extend the service life of the device, and reduce the frequency of battery replacement. The second radio frequency chip 12 uses the CMT2300A model. This chip has low power consumption characteristics and is suitable for use in wireless communication devices. It can further reduce the power consumption of the entire irrigation device 4 while ensuring communication performance.
[0046] The irrigation device 4 is powered by dry cell batteries. The supply voltage of the irrigation device 4 is 3V, and its operating voltage is 3.3V. The supply voltage of the irrigation device 4 is converted to its operating voltage via a first DC boost circuit 13. The irrigation device 4 in this application is designed with a 3.3V operating voltage. This low-power design not only extends the lifespan of the equipment and reduces the frequency of battery replacement, but also lowers the operating cost. The irrigation device 4 is powered by dry cell batteries, a simple, low-cost, and easy-to-replace and maintain power supply method suitable for use in situations without a stable power supply, thus reducing the overall system cost. The first DC boost circuit 13 converts the 3V supply voltage to a 3.3V operating voltage. This circuit design improves energy conversion efficiency, reduces energy loss, and thus reduces power consumption to a certain extent. Simultaneously, it ensures that the equipment can operate normally under lower supply voltages, enhancing the system's adaptability and stability.
[0047] In this application, the selected HC32L90 irrigation chip 11 and CMT2300A RF chip are both mature products with good performance and reliability, ensuring the stable operation of the entire irrigation system 4. The ultra-low power consumption design allows for stable operation for one year using battery power.
[0048] In this application, the irrigation gateway 3 is the central decision-making unit, the irrigation device 4 is the execution unit, and the soil sensor 5 is the environmental monitoring unit. It also includes peripheral circuits such as power supply circuits, valves, indicator lights, and buttons. This application can monitor soil temperature and humidity, allow users to preset irrigation plans, and acquire weather data through the cloud 2, thereby achieving automatic irrigation. Users can set irrigation plans through the APP 1 to control the irrigation device 4.
[0049] Example 2, as Figures 1 to 4 As shown, the irrigation gateway 3 includes a control chip 6 and a first radio frequency chip 7, with the control chip and the first radio frequency chip connected together. The control chip 6 is an RTL8720cm chip, and the first radio frequency chip 7 is a CMT2300A chip.
[0050] The RTL8720cm is a highly integrated single-chip system manufactured by Realtek. It integrates Wi-Fi and Bluetooth capabilities, making it suitable for various IoT applications and providing robust communication capabilities for the irrigation gateway 3. The CMT2300A RF chip ensures stable wireless communication with the irrigation device 4 and the soil sensor 5, guaranteeing reliable data transmission.
[0051] The irrigation gateway 3 is supplied with a power supply voltage of 5V or 100V~240V, and its operating voltage is 3.3V. The irrigation gateway 3 includes a step-down module 8, through which the power supply voltage is output as the operating voltage. In this application, the irrigation gateway 3 supports a wide voltage input range of 100V~240V, or a 5V USB adapter input. The step-down module 8 can stably convert the 5V or 100V~240V power supply voltage to a 3.3V operating voltage, ensuring the stable operation of the irrigation gateway 3.
[0052] The irrigation device 4 includes a valve 14, and an irrigation chip 11 is connected to the valve 14 and controls its opening and closing. The irrigation device 4 is powered by two dry-cell batteries. The HC32L90 is a high-performance, low-power 32-bit microcontroller. The use of dry-cell batteries, combined with the low-power irrigation chip 11, extends the device's lifespan and reduces maintenance costs. The irrigation chip 11 directly controls the opening and closing of the valve 14, enabling precise irrigation control based on real-time data such as soil moisture and weather conditions, thus improving irrigation efficiency.
[0053] The soil sensor 5 includes a sensing chip 21 and a third radio frequency chip 22, which are connected. The sensing chip 21 is an HC32L90, and the third radio frequency chip is a CMT2300A. The HC32L90, as a low-power sensing chip 21, combined with the CMT2300A radio frequency chip, ensures stable operation of the soil sensor 5 in low-power mode while providing high-precision soil moisture and temperature data. The CMT2300A radio frequency chip ensures stable wireless communication between the soil sensor 5 and the irrigation gateway 3, guaranteeing reliable data transmission.
[0054] In this application, the control chip 6, irrigation chip 11, and sensing chip 21 are respectively connected to buttons and indicator light groups. The buttons allow users to easily operate each chip, while the indicator light groups can intuitively reflect the status of each chip.
[0055] The soil sensor 5 includes a sensing capacitor, a thermistor, and a photoresistor. The soil sensor 5 is at least partially inserted into the soil. The thermistor detects the soil temperature, the photoresistor acquires the brightness of the environment, and the photoresistor uses a GL5528 photosensitive element. The sensing capacitor acquires soil moisture. By acquiring soil moisture through the sensing capacitor, detecting soil temperature through the thermistor, and acquiring ambient brightness through the photoresistor (GL5528), comprehensive environmental monitoring data is provided, offering a more scientific basis for irrigation decisions. Multi-parameter monitoring enables the irrigation system to comprehensively determine whether irrigation is needed based on soil moisture, temperature, and light conditions, improving irrigation accuracy and conserving water resources.
[0056] The soil sensor 5 includes a logic decision chip connected to a sensing capacitor. The logic decision chip is a 74LVC1G86GW logic gate chip. The 74LVC1G86GW logic decision chip is a logic gate chip primarily used for implementing digital logic operations. It can be used in conjunction with other sensors (such as sensing capacitors) to process the digital signals output by the sensors.
[0057] The soil sensor 5 is supplied with a power supply voltage of 3V and operates at a voltage of 3.3V. The power supply voltage of the soil sensor 5 is converted to its operating voltage via a second DC boost circuit 23. This power conversion design improves energy conversion efficiency, reduces energy loss, and further lowers the system's power consumption.
[0058] The irrigation gateway transmits data with the cloud (2) via MQTT or HTTPS protocols, and also transmits data with the app (1) via the same protocols. Both MQTT and HTTPS are mature data transmission protocols, ensuring efficient and secure data transmission between the cloud (2) and the app (1). Users can view soil moisture, temperature, and other information anytime, anywhere via the mobile app (1), and adjust irrigation plans according to actual conditions, improving the system's intelligence and management convenience.
[0059] The irrigation chip 11 communicates with the second radio frequency chip 12 via the SPI protocol; the control chip 6 communicates with the first radio frequency chip via the SPI protocol. The SPI protocol is a high-speed, full-duplex communication protocol that enables rapid data transmission between the irrigation chip 11 and the radio frequency chip, improving the system's response speed.
[0060] The rest of the contents of Example 2 are the same as those of Example 1.
[0061] Specifically, the irrigation device 4 can be manually controlled through APP1. APP1 can display the next irrigation time, historical irrigation records, timed irrigation design, irrigation mode (such as spraying, watering), weather, rain delay design, radio frequency signal strength, battery level and other signals.
[0062] The following information may be used as a reference in this application:
[0063] APP1 activates irrigation gateway 3: The mobile phone connects to irrigation gateway 3 via Bluetooth and transmits the router's SSID and password to irrigation gateway 3. Irrigation gateway 3 then connects to cloud 2 to complete activation.
[0064] Adding Irrigator 4 and Soil Sensor 5 to Irrigation Gateway 3: After Irrigation Gateway 3 is activated, it automatically interacts with Irrigator 4 and Soil Sensor 5 via RF signal to activate Irrigator 4 and Soil Sensor 5 to the cloud 2.
[0065] Irrigation plan: The user configures the plan via APP1 (e.g., timed irrigation plan, spray plan, rain delay, soil sensor 5 linkage). The cloud 2 transmits the irrigation plan to the irrigation gateway via wireless signal. The control chip 6 of the irrigation gateway transmits the data to the first radio frequency chip via SPI protocol. The first radio frequency chip synchronizes the data to the low-frequency irrigator 4 via RF signal.
[0066] Execute the irrigation plan: Irrigator 4 receives the irrigation plan, saves the data to irrigation chip 11, and executes the irrigation. Detailed rules are as follows:
[0067] Only during timed watering / spraying, the irrigation chip 11 opens the valve to perform watering and closes the valve to end watering at set times;
[0068] When there is a timed watering / spraying function and the rain delay is enabled, the irrigation chip 11 will not perform watering when rain is detected.
[0069] When soil sensor 5 is activated, it detects dry soil and reports it to the irrigation gateway. Upon receiving this information, the first RF chip of the irrigation gateway notifies the control chip. The control chip then transmits data to the first RF chip via the SPI protocol and subsequently notifies the irrigation device 4 to initiate irrigation via an RF signal.
[0070] Reporting irrigation data: After valve 14 completes irrigation, it reports the data to the irrigation gateway via radio frequency signal; the irrigation gateway notifies the cloud 2; the APP 1 can view the irrigation record.
[0071] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.
Claims
1. A low-power intelligent irrigation system, characterized in that, The system includes an APP (1), a cloud (2), an irrigation gateway (3), a soil sensor (5), and an irrigation device (4). The soil sensor (5) and the irrigation device (4) transmit data to the irrigation gateway (3) via RF signals. The irrigation gateway uploads data to the cloud (2) and obtains the synchronized data from the cloud (2) to control the irrigation device (4). The irrigation device (4) includes an irrigation chip (11), a second radio frequency chip (12) and a DC boost circuit. The second radio frequency chip (12) is connected to the irrigation chip (11). The irrigation device (4) is powered by a dry cell battery. The power supply voltage of the irrigation device (4) is 3V, and the working voltage of the irrigation device (4) is 3.3V. The power supply voltage of the irrigation device (4) is converted into the working voltage of the irrigation device (4) through the first DC boost circuit (13).
2. The low-power intelligent irrigation system according to claim 1, characterized in that, The irrigation gateway (3) includes a control chip (6) and a first radio frequency chip (7), and the control chip (6) and the first radio frequency chip (7) are connected.
3. The low-power intelligent irrigation system according to claim 2, characterized in that, The power supply voltage of the irrigation gateway (3) is 5V or 100V~240V, the working voltage of the irrigation gateway (3) is 3.3V, the irrigation gateway (3) includes a step-down module (8), and the power supply voltage of the irrigation gateway (3) is output through the step-down module (8) to output the working voltage of the irrigation gateway (3).
4. The low-power intelligent irrigation system according to claim 2, characterized in that, The irrigation device (4) includes a valve (14), an irrigation chip (11) is connected to the valve (14) and controls the opening and closing of the valve (14), and the irrigation device (4) is powered by two dry batteries.
5. The low-power intelligent irrigation system according to claim 1, characterized in that, The soil sensor (5) includes a sensing chip (21) and a third radio frequency chip (22), and the sensing chip (21) and the third radio frequency chip (22) are connected.
6. The low-power intelligent irrigation system according to claim 5, characterized in that, The soil sensor (5) includes a sensing capacitor, a thermistor and a photoresistor. The soil sensor (5) is at least partially inserted into the soil. The thermistor detects the soil temperature, the photoresistor obtains the brightness of the environment to be detected, and the sensing capacitor obtains the soil moisture.
7. The low-power intelligent irrigation system according to claim 6, characterized in that, The soil sensor (5) includes a logic judgment chip, which is connected to a sensing capacitor.
8. The low-power intelligent irrigation system according to claim 1, characterized in that, The power supply voltage of the soil sensor (5) is 3V, and the working voltage of the soil sensor (5) is 3.3V. The power supply voltage of the soil sensor (5) is converted into the working voltage of the soil sensor (5) through the second DC boost circuit (23).
9. The low-power intelligent irrigation system according to claim 1, characterized in that, The irrigation gateway transmits data to the cloud (2) via MQTT or HTTPS protocol, and transmits data to the APP (1) via MQTT or HTTPS protocol.
10. The low-power intelligent irrigation system according to claim 4, characterized in that, The irrigation chip (11) communicates with the second radio frequency chip (12) via the SPI protocol; the control chip (6) communicates with the first radio frequency chip (7) via the SPI protocol.