Solar wireless valve controller

Abstract

The utility model relates to the technical field of solenoid valve decoders, and discloses a solar wireless valve controller. The utility model aims to solve the technical problems that a wired decoder in the prior art needs to lay a large number of wires, the labor cost is high, the maintenance is complicated, and the solar energy utilization efficiency is low. The system comprises a controller connected with a plurality of electromagnetic valves, the controller is connected with a motor driving module and a wireless communication module, and the motor driving module comprises two motor driving chips RZ7899 so as to realize double-shaft tracking rotation of a solar panel; the wireless communication module comprises a LoRa radio frequency chip; the input end of the power supply module is connected with the solar panel, and the output end of the power supply module is connected with the energy storage battery; the power supply module further comprises a signal processing circuit, and the signal processing circuit comprises two optical couplers. According to the utility model, automatic control and management of the electromagnetic valve are realized. The efficiency and the reliability of the system are improved, the operation cost is reduced, and remarkable economic and social benefits are achieved.

Description

A solar-powered wireless valve controller Technical Field

[0001] This utility model relates to the field of electromagnetic valve decoder technology, and in particular to a solar-powered wireless valve controller. Background Technology

[0002] A solenoid valve decoder is an intermediate device that controls the opening and closing of solenoid valves. It identifies irrigation valve zones, completes the opening and closing actions, and enables the system to implement cyclic irrigation. Decoders are divided into wired and wireless decoders. The solenoid valve decoder control system can meet the management needs of large-area irrigation and complex irrigation tasks. One solenoid valve decoder can control one or two solenoid valves, adopts a fully sealed design, and has a waterproof rating of IP68. When a decoder fails, only the decoder for each channel needs to be replaced, without affecting the overall irrigation operation. It is widely applicable to smart agriculture, landscaping, fire monitoring, misting dust suppression, lawn sprinkler irrigation, urban greening, and other scenarios. The solenoid valve decoder is a control unit with a microcontroller, responsible for parsing signals from the intelligent irrigation control host, controlling the solenoid valves, and returning the control results to the intelligent irrigation control host.

[0003] Chinese patent document 202221141370.3 discloses a dustproof and waterproof solenoid valve encoder / decoder, including a sealed end cap and a sealed housing with an upper opening. A connector plate is installed on the lower end face of the sealed end cap, and a connector groove is formed on the upper end face of the side wall of the sealed housing. The sealed end cap and the sealed housing are sealed together via the connector plate and the connector groove. A handle is installed in the middle of the upper end face of the sealed end cap, and wiring sleeves are installed on both sides of the handle. A rubber sealing sleeve is installed inside the wiring sleeve, and waterproof sealant is placed inside the rubber sealing sleeve. A positioning top plate is installed on the lower end face of the sealed end cap, and a cushioning pad is installed around the inside of the sealed housing. A pearl sponge pad is installed at the bottom, and the decoder body is installed above the pearl sponge pad and abuts against the lower end face of the positioning top plate.

[0004] However, the above-mentioned solutions have at least the following technical problems during implementation: wired decoders require the laying of a large amount of wiring, resulting in high labor costs, complex maintenance, and low solar energy utilization efficiency. Therefore, there is an urgent need to propose a solar-powered wireless valve controller. Summary of the Invention

[0005] In view of the above technical problems, this disclosure provides a solar-powered wireless valve controller, which solves the technical problems of existing wired decoders that require laying a large number of cables, have high labor costs, are complicated to maintain, and have low solar energy utilization efficiency.

[0006] According to one aspect of this disclosure, a solar-powered wireless valve controller is provided, comprising a controller connected to multiple solenoid valves. The controller is connected to a motor drive module and a wireless communication module. The motor drive module includes two motor drive chips (RZ7899) to achieve dual-axis tracking rotation of the solar panel. The wireless communication module includes a LoRa radio frequency chip. The controller's power interface is connected to a power supply module, the input of which is connected to the solar panel, and the output of which is connected to a storage battery to enable solar charging of the battery. The power supply module also includes a signal processing circuit, which includes two optocouplers for electrical isolation.

[0007] In some embodiments of this disclosure, the controller is connected to a solenoid valve via a 10k resistor to achieve current limiting protection.

[0008] In some embodiments of this disclosure, the power supply module includes a charging controller, which includes a CN3795 chip to charge the energy storage battery with the output voltage of the solar panel; the charging controller is connected to MOSFETs Q1 and Q2 to control the charging and discharging of the energy storage battery; the power supply module also includes a power management chip U8 to convert the voltage to 3.3V.

[0009] In some embodiments of this disclosure, the controller is an STM8S103, and its NRST reset pin is connected to a 10KΩ pull-up resistor and a RESET button for controller reset; the controller's PB5 and PD7 pins are connected to indicator lights LED1 and LED3, respectively, for indicating the working status of the controller and the wireless communication module.

[0010] In some embodiments of this disclosure, the optocoupler includes a light-emitting device and a light-receiving device packaged together, the input terminal of the optocoupler is connected to a protection diode for input protection, and the output terminal of the optocoupler is connected to an indicator light to indicate the operating status of the optocoupler.

[0011] In some embodiments of this disclosure, the antenna interface of the LoRa RF chip is connected to an antenna for wireless signal transmission; the power supply terminal of the LoRa RF chip is connected to an electrolytic capacitor for filtering and voltage stabilization.

[0012] The beneficial effects of this utility model are as follows:

[0013] Two motor drive chips enable dual-axis tracking rotation of the solar panel. This significantly improves the solar panel's power generation efficiency and allows for dynamic angle adjustment based on the sun's position, maximizing solar energy capture. An optocoupler provides electrical isolation between the solar panel and the energy storage battery. This isolation effectively prevents damage to the controller and battery from high-voltage or current surges, while enhancing system safety and reliability. The charging controller efficiently charges the energy storage battery with the solar panel's output voltage. It features overcharge protection, over-discharge protection, and temperature compensation, extending battery life and ensuring charging safety. A power management chip (U8) converts the voltage to a stable 3.3V, providing a stable power supply to the controller and other low-power modules, ensuring stable system operation under various load conditions. The STM8S103 microcontroller offers high performance and low power consumption. A RESET button allows for convenient system reset. LED indicators show the operating status of the controller and wireless communication module, providing users with a clear understanding of the device's operation, facilitating troubleshooting and maintenance. LoRa technology is employed, offering long-distance transmission and low power consumption. The LoRa chip's antenna interface connects to an antenna for wireless signal transmission, enabling remote control and data transmission. An electrolytic capacitor connects to the LoRa RF chip's power supply terminal for filtering and voltage stabilization, ensuring stable operation of the LoRa module under different power conditions and reducing signal interference. A protection diode connects to the optocoupler's input terminal for input protection. This design prevents damage to the optocoupler from reverse voltage or current surges. The controller is connected to the solenoid valve via a 10kΩ resistor, limiting current and protecting the controller's output port from reverse electromotive force surges from the solenoid valve coil. Solar power reduces reliance on traditional power sources, lowers operating costs, and meets environmental requirements. Combined with the wireless communication module and controller, remote control and automated management of the solenoid valve are achieved, improving the system's automation level. Attached Figure Description

[0014] Figure 1 is a circuit diagram of a solar-powered wireless valve controller.

[0015] Figure 2 is the schematic diagram of the controller circuit;

[0016] Figure 3 is a circuit schematic of the motor drive module;

[0017] Figure 4 is a schematic diagram of the signal processing circuit;

[0018] Figure 5 is a schematic diagram of the solenoid valve circuit.

[0019] Figure 6 is a circuit diagram of the charging controller;

[0020] Figure 7 is a circuit schematic of the power management chip;

[0021] Figure 8 is a circuit schematic of the wireless communication module; Detailed Implementation

[0022] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention. Embodiments

[0023] This example discloses a solar-powered wireless valve controller, see Figures 1 to 8;

[0024] The system includes a controller that connects multiple solenoid valves. The controller connects to a motor drive module and a wireless communication module. The motor drive module includes two RZ7899 motor drive chips to achieve dual-axis tracking rotation of the solar panel. The wireless communication module includes a LoRa RF chip. The controller's power interface connects to a power supply module. The power supply module's input is connected to the solar panel, and its output is connected to an energy storage battery to enable solar charging of the battery. The power supply module also includes a signal processing circuit, which includes two optocouplers for electrical isolation.

[0025] The controller is connected to the solenoid valve via a 10k resistor to achieve current limiting protection.

[0026] The power supply module includes a charging controller, which includes a CN3795 chip to charge the energy storage battery with the output voltage of the solar panel; the charging controller is connected to MOSFETs Q1 and Q2 to control the charging and discharging of the energy storage battery; the power supply module also includes a power management chip U8 to convert the voltage to 3.3V.

[0027] The controller is an STM8S103. Its NRST reset pin is connected to a 10KΩ pull-up resistor and a RESET button for controller reset. The controller's PB5 and PD7 pins are connected to indicator lights LED1 and LED3, which are used to indicate the working status of the controller and the wireless communication module, respectively.

[0028] An optocoupler includes a light-emitting device and a light-receiving device packaged together. The input terminal of the optocoupler is connected to a protection diode for input protection; the output terminal of the optocoupler is connected to an indicator light to indicate the operating status of the optocoupler.

[0029] The antenna interface of the LoRa RF chip is connected to an antenna for wireless signal transmission; the power supply terminal of the LoRa RF chip is connected to an electrolytic capacitor for filtering and voltage stabilization.

[0030] During operation, the controller calculates the optimal angle of the solar panel based on its built-in algorithm. The controller uses a motor driver chip RZ7899 to control two motors, adjusting the horizontal and vertical angles of the solar panel to ensure it always faces the sun. The solar panel converts solar energy into electrical energy, outputting DC voltage. The CN3795 chip receives the output voltage from the solar panel and, through its built-in charging management algorithm, charges the energy into the energy storage battery. MOSFETs Q1 and Q2, connected to the charging controller, control the charging and discharging process of the energy storage battery. The battery voltage is stepped down and regulated by the power management chip U8. A stable 3.3V power supply is output to ensure the normal operation of the controller, wireless communication module, and other low-power modules. The controller connects to multiple solenoid valves via its pins and uses a 10kΩ resistor to limit the current and protect the output ports. The controller controls the opening and closing of the solenoid valves according to a preset schedule. The controller's NRST reset pin is connected to a 10kΩ pull-up resistor and a RESET button, allowing the user to reset the system. The controller's PB5 and PD7 pins are connected to indicator lights LED1 and LED3, indicating the operating status of the controller and wireless communication module, respectively. The indicator lights provide users with a clear understanding of the device's operating status, facilitating troubleshooting and maintenance. The controller transmits data such as the solenoid valve status to a remote server via a LoRa RF chip. Simultaneously, the LoRa RF chip receives commands from the remote server to control the solenoid valve. The LoRa RF chip's antenna interface connects to an antenna, ensuring long-distance wireless signal transmission. A protection diode is connected to the input of the optocoupler to prevent damage from reverse voltage or current surges. Through the optocoupler, electrical isolation is achieved between the solar panel's input signal and the energy storage battery's output signal, preventing damage to the controller and battery from high-voltage or current surges.

[0031] Although some preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0032] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this application and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A solar-powered wireless valve controller, characterized in that: The system includes a controller that connects multiple solenoid valves. The controller also connects to a motor drive module and a wireless communication module. The motor drive module includes two RZ7899 motor drive chips to enable dual-axis tracking rotation of the solar panel. The wireless communication module includes a LoRa radio frequency chip. The controller's power interface connects to a power supply module. The power supply module's input is connected to the solar panel, and its output is connected to a storage battery to enable solar charging of the battery. The power supply module also includes a signal processing circuit, which includes two optocouplers for electrical isolation.

2. The solar-powered wireless valve controller as described in claim 1, characterized in that: The controller is connected to the solenoid valve via a 10k resistor to achieve current limiting protection.

3. The solar-powered wireless valve controller as described in claim 1, characterized in that: The power supply module includes a charging controller, which includes a CN3795 chip to charge the energy storage battery with the output voltage of the solar panel; the charging controller is connected to MOSFETs Q1 and Q2 to control the charging and discharging of the energy storage battery; the power supply module also includes a power management chip U8 to convert the voltage to 3.3V.

4. The solar-powered wireless valve controller as described in claim 1, characterized in that: The controller is an STM8S103, and its NRST reset pin is connected to a 10KΩ pull-up resistor and a RESET button for controller reset.

5. The solar-powered wireless valve controller as described in claim 1, characterized in that: The controller's PB5 and PD7 pins are connected to indicator lights LED1 and LED3, which are used to indicate the working status of the controller and the wireless communication module, respectively.

6. The solar-powered wireless valve controller as described in claim 1, characterized in that: The optocoupler includes a light-emitting device and a light-receiving device packaged together. The input terminal of the optocoupler is connected to a protection diode for input protection. The output terminal of the optocoupler is connected to an indicator light to indicate the operating status of the optocoupler.

7. The solar-powered wireless valve controller as described in claim 1, characterized in that: The LoRa RF chip's antenna interface is connected to an antenna for wireless signal transmission; the LoRa RF chip's power supply terminal is connected to an electrolytic capacitor for filtering and voltage stabilization.

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