A new low-power electric ball valve control device

Abstract

The utility model discloses a novel low -power consumption electric ball valve controlling means, include: ultra -low power consumption microcontroller MCU, power module, intelligent sensing module, motor driver, communication module, ultra -low power consumption microcontroller connects motor driver, motor driver connects the electrical actuating mechanism of electric ball valve, is used for the opening and closing of control valve body, ultra -low power consumption microcontroller is connected with power module, is used for the overall power supply of equipment, ultra -low power consumption microcontroller is connected with communication module, is used for wireless data transmission, the technical effect and advantage of the utility model: through hardware low -power consumption framework design, will average work standby current drop to 3mA below, hibernate current drop to 10uA below, the endurance time is prolonged to 2 months (2 section 18650 battery), and the precise opening degree regulation and the strong environmental adaptability are kept simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of agricultural irrigation equipment technology, specifically to a low-power intelligent control device for electric ball valves in farmland, which is particularly suitable for scenarios requiring long-term autonomous operation in decentralized farmland irrigation systems. Background Technology

[0002] In traditional farmland irrigation systems, electric ball valves mostly rely on AC mains power or DC power supply with frequent battery replacements, which presents the following drawbacks: High power consumption: Existing ball valve controllers have high power consumption due to redundant circuit design and lack of sleep mechanism. As a result, the battery life is only 20 days to 1 month when powered by two 18650 batteries, resulting in high maintenance costs. Conflict between control precision and power consumption: In order to achieve precise opening adjustment, some devices need to continuously collect feedback signals and drive motors, which further increases power consumption. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, this utility model provides a novel low-power electric ball valve control device.

[0004] The technical solution of this utility model is as follows: A novel low-power electric ball valve control device includes: an ultra-low power microcontroller (MCU), a power supply module, an intelligent sensing module, a motor driver, and a communication module; The ultra-low power microcontroller is connected to a motor driver, which in turn is connected to the electrical actuator of the electric ball valve to control the opening and closing of the valve body. The ultra-low power microcontroller is connected to a power module for overall power supply of the device; The ultra-low power microcontroller is connected to a communication module for wireless data transmission; A flow meter is installed in the valve body, and the flow meter is electrically connected to an ultra-low power microcontroller. An angle sensor is installed at the electrical actuator. The angle sensor is electrically connected to an ultra-low power microcontroller and is used to sense the rotation angle of the valve body.

[0005] The ultra-low power microcontroller is connected to a pressure sensor for water pressure detection.

[0006] The communication module is a 4G module. The ultra-low power microcontroller connects to the cloud platform via the 4G network, and the cloud platform connects to a mobile phone or computer via the network.

[0007] The power module uses solar panel components and lithium batteries for charging and discharging.

[0008] It also includes a lithium battery charging chip U1, a power conversion module U2, an ultra-low power microcontroller U3, a low power supply chip U4, a motor drive chip U5, an angle sensor U6, a 4G module COM1, a program download interface SWD1, and a flow meter interface FLOW; Pin 1 of U1 is connected to resistor R3 to GND to set the charging current. Currently, a 2K resistor is selected to limit the maximum charging current to 400mA. Pin 2 of U1 is connected to GND; Pin 3 of U1 is connected to an LED to indicate the charging status; U1's pin 4 is connected to the positive terminal BAT of the battery, and C3 is connected to pin 4 to protect the chip from spikes and glitch damage. Pin 5 of U1 is the battery output pin. The lithium battery supplies power to the load through this pin, which connects to pin 1 of U3 and pin 3 of the low-power power chip U4. Pin 6 of U1 is connected to pin 1 of the solar panel output terminal through resistor R1, and C1 is connected to pin 6 of U1 to protect the chip from spikes and glitch damage. Pin 1 of U2 is connected to pin 1 of U2 through inductor L1 to set the switching frequency; Pin 2 of U2 is connected to GND; Pin 3 of U2 is connected to pin 22 of U3 for power enable, which can control the power switch as needed; Pin 4 of U2 is connected to the pins of resistors R4 and R5. Resistors R4 and R5 are connected in series to pin 5 (V36) of U2 to provide feedback on the voltage output by the chip. Pin 5 of U2 is connected to pin 2 of COM1 of the 4G module to supply power to the 4G module; Pin 1 of COM1 is connected to GND; Pin 2 of COM1 is connected to the V36 power supply; Pin 3 of COM1 is connected to pin 21 of U3, and the UART output rings as a notification. Pin 4 of COM1 is connected to pin 20 of U3, and then connected to power supply V36 through pull-up resistor R6 for data reading. Pin 5 of COM1 is connected to pin 19 of U3 to send data; Connect pin 6 of COM1 to pin 18 of U3 to check if the data terminal is ready; Pin 7 of COM1 is connected to pin 17 of U3 to enable GPS; Pin 1 of U5 is connected to pin 29 of U3 via diode D2 to drive the motor; Pin 2 of U5 is connected to pin 30 of U3 via diode D1 to drive the motor; Pin 3 of U5 is connected to GND; Pin 4 of U5 is connected to the battery BAT; Pins 5 and 6 of U5 are connected to pin 1 of the motor terminal; Pins 7 and 8 of U5 are connected to pin 2 of the motor terminal; Pin 1 of the low-power power chip U4 is connected to pin 32 of U3 to control the GND of the low-power power chip U4; Pin 2 of the low-power power chip U4 is connected to pin 1 of the pressure sensor terminal to power the sensor; Pin 3 of the low-power power chip U4 is connected to pin 32 of U3 to control the GND of the low-power power chip U4; Pin 1 of U6 is connected to pin 15 of U3 to control the power supply of U6; The 3.3V power supply output from the internal chip at pin 2 of U6 is filtered by capacitor C11. Pin 4 of U6 is connected to GND; Pins 3 and 5 of U6 should not be connected; Pin 6 of U6 is connected to pin 2 of U3, and resistor R11 is connected to pin 2 as a pull-up resistor. (Chip data) Pin 7 of U6 is connected to pin 3 of U3, and resistor R10 is connected to pin 2 as a pull-up resistor for the chip clock. Pin 1 of SWD1 is connected to VCC; Pin 2 of SWD1 is connected to pin 24 of U3, which is the clock signal; Pin 3 of SWD1 is connected to GND; Connect pin 4 of SWD1 to pin 23 of U3 for data. Pin 5 of SWD1 is connected to pin 4 of U3 for U3 reset; Connect pin 1 of FLOW to pin 28 of U3 for power control; Connect pin 2 of FLOW to pin 27 of U3, data; Connect the third pin of the FLOW connector to GND. Capacitors C8 and C9 are connected to pins 1 and 4 of U3 respectively for filtering.

[0009] The technical effects and advantages of this utility model are as follows: Through a low-power hardware architecture design, the average standby current is reduced to below 3mA, the sleep current is reduced to below 10uA, and the battery life is extended to 2 months (2 18650 batteries), while maintaining precise opening adjustment and strong environmental adaptability.

[0010] The hardware design of this device prioritizes low power consumption. The power supply is designed to be provided on demand. The sensor is only powered on when it is working, and is powered off at other times. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the system structure of this utility model; Figure 2 Circuit diagram of the power supply system for the pressure sensor; Figure 3 For driving application circuit diagrams; Figure 4 This is the circuit schematic diagram of this utility model. Detailed Implementation

[0012] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0013] Example 1

[0014] like Figure 1 The novel low-power electric ball valve control device shown includes: an ultra-low power microcontroller (MCU), a power supply module, an intelligent sensing module, a motor driver, and a communication module. The ultra-low power microcontroller is connected to a motor driver, which in turn is connected to the electrical actuator of the electric ball valve to control the opening and closing of the valve body. The ultra-low power microcontroller is connected to a power module for overall power supply of the device; The ultra-low power microcontroller is connected to a communication module for wireless data transmission; A flow meter is installed in the valve body, and the flow meter is electrically connected to an ultra-low power microcontroller. An angle sensor is installed at the electrical actuator. The angle sensor is electrically connected to an ultra-low power microcontroller and is used to sense the rotation angle of the valve body.

[0015] Furthermore, the ultra-low power microcontroller is connected to a pressure sensor for water pressure detection.

[0016] Furthermore, the communication module is a 4G module, and the ultra-low power microcontroller connects to the cloud platform via a 4G network. The cloud platform then connects to a mobile phone or computer via the network.

[0017] Furthermore, the power module uses solar panel components and lithium batteries for charging and discharging.

[0018] Example 2

[0019] Low-power hardware design: 1. Employs an ultra-low power microcontroller (MCU), preferably the PY32F030 series from PY Corporation, supporting multiple sleep modes: including standby mode (Sleep Mode, power consumption ≤0.4mA) and stop mode (Stop Mode, power consumption ≤6μA). It can be quickly woken up by external interrupts (such as timing signals or valve opening change signals) (wake-up time ≤10us); integrates a 12-bit ADC (reducing power consumption of peripheral circuits), a real-time clock (RTC, supporting low-power timing), and a comparator (replacing external op-amps for voltage detection), reducing peripheral power consumption.

[0020] 2. Power module: Battery (2 18650 batteries) + solar panel power supply (12V, 1.5W). The power conversion adopts ST's low-power series chip TLV61070A, with a conversion efficiency of up to 92.3% and a VIN and SW shutdown current of 0.1µA.

[0021] 3. Intelligent Sensing Module: The valve opening measurement uses an easy-to-program magnetic rotary position sensor AS5600L from AMS (leaking current is only 0.1uA), which is an angle sensor. It has an intelligent low-power mode that can automatically reduce power consumption and can also provide 12-bit high-resolution analog or PWM output.

[0022] like Figure 2 As shown, the pressure sensor is powered by the MCU controlling the GND pin of the LDO.

[0023] 4. Motor Driver: The system utilizes the MSKSEMI AT8870 DC motor driver with a Sleep mode. It features a single VM power supply and an integrated charge pump. Two logic inputs control an H-bridge driver composed of four N-MOS transistors (on-resistance < 0.3Ω), capable of bidirectional motor control with a peak current up to 3.6A. This chip uses current decay to preset the maximum output current, limiting the current to a specific value. If both inputs are set low, the motor driver enters a low-power sleep mode. Figure 3 As shown.

[0024] 5. Communication module: It uses Quectel's EC800 series 4G module, with a sleep current of 0.64mA. It is only woken up when remote control is needed, and is in shutdown mode (6.42uA) at other times.

[0025] Example 3

[0026] like Figure 4 The schematic diagram shown: U1 is a lithium battery charging chip. Pin 1 of U1 is connected to resistor R3 to GND to set the charging current. Currently, a 2K resistor is selected to limit the maximum charging current to 400mA. Pin 2 of U1 is connected to GND; Pin 3 of U1 is connected to an LED to indicate the charging status; U1's pin 4 is connected to the positive terminal BAT of the battery, and C3 is connected to pin 4 to protect the chip from spikes and glitch damage. Pin 5 of U1 is the battery output pin. The lithium battery supplies power to the load through this pin, which connects to pin 1 of U3 and pin 3 of the low-power power chip U4. Pin 6 of U1 is connected to pin 1 of the solar panel output terminal through resistor R1, and C1 is connected to pin 6 of U1 to protect the chip from spikes and glitch damage. U2 is a power conversion module. Pin 1 of U2 is connected to pin 1 of U2 through inductor L1 to set the switching frequency; Pin 2 of U2 is connected to GND; Pin 3 of U2 is connected to pin 22 of U3 for power enable, which can control the power switch as needed; Pin 4 of U2 is connected to the pins of resistors R4 and R5. Resistors R4 and R5 are connected in series to pin 5 (V36) of U2 to provide feedback on the voltage output by the chip. Pin 5 of U2 is connected to pin 2 of COM1 of the 4G module to supply power to the 4G module; COM1 is a 4G module Pin 1 of COM1 is connected to GND; Pin 2 of COM1 is connected to the V36 power supply; Pin 3 of COM1 is connected to pin 21 of U3, and the UART output rings as a notification. Pin 4 of COM1 is connected to pin 20 of U3, and then connected to power supply V36 through pull-up resistor R6 for data reading. Pin 5 of COM1 is connected to pin 19 of U3 to send data; Connect pin 6 of COM1 to pin 18 of U3 to check if the data terminal is ready; Pin 7 of COM1 is connected to pin 17 of U3 to enable GPS; U5 is a motor driver chip. Pin 1 of U5 is connected to pin 29 of U3 via diode D2 to drive the motor; Pin 2 of U5 is connected to pin 30 of U3 via diode D1 to drive the motor; Pin 3 of U5 is connected to GND; U5's 4th pin is connected to the battery BAT; Pins 5 and 6 of U5 are connected to pin 1 of the motor terminal; Pins 7 and 8 of U5 are connected to pin 2 of the motor terminal; Pin 1 of the low-power power chip U4 is connected to pin 32 of U3 to control the GND of the low-power power chip U4; Pin 2 of the low-power power chip U4 is connected to pin 1 of the pressure sensor terminal to power the sensor; Pin 3 of the low-power power chip U4 is connected to pin 32 of U3 to control the GND of the low-power power chip U4; U6 is an angle sensor. Pin 1 of U6 is connected to pin 15 of U3 to control the power supply of U6; The 3.3V power supply output from the internal chip at pin 2 of U6 is filtered by capacitor C11. Pin 4 of U6 is connected to GND; Pins 3 and 5 of U6 should not be connected; Pin 6 of U6 is connected to pin 2 of U3, and resistor R11 is connected to pin 2 as a pull-up resistor. (Chip data) Pin 7 of U6 is connected to pin 3 of U3, and resistor R10 is connected to pin 2 as a pull-up resistor for the chip clock. SWD1 is the program download interface. Pin 1 of SWD1 is connected to VCC; Pin 2 of SWD1 is connected to pin 24 of U3, which is the clock signal; Pin 3 of SWD1 is connected to GND; Connect pin 4 of SWD1 to pin 23 of U3 for data; Pin 5 of SWD1 is connected to pin 4 of U3 for U3 reset; FLOW is the interface for the flow meter. Connect pin 1 of FLOW to pin 28 of U3 for power control; Connect pin 2 of FLOW to pin 27 of U3, data; FLOW's third pin is connected to GND; U3 is an MCU Capacitors C8 and C9 are connected to pins 1 and 4 of U3 respectively for filtering.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel low-power electric ball valve control device, characterized in that, include: Ultra-low power microcontrollers (MCUs), power modules, intelligent sensing modules, motor drivers, and communication modules; The ultra-low power microcontroller is connected to a motor driver, which in turn is connected to the electrical actuator of the electric ball valve to control the opening and closing of the valve body. The ultra-low power microcontroller is connected to a power module for overall power supply of the device; The ultra-low power microcontroller is connected to a communication module for wireless data transmission; A flow meter is installed in the valve body, and the flow meter is electrically connected to an ultra-low power microcontroller. An angle sensor is installed at the electrical actuator. The angle sensor is electrically connected to an ultra-low power microcontroller and is used to sense the rotation angle of the valve body. The ultra-low power microcontroller is connected to a pressure sensor for water pressure detection.

2. The novel low-power electric ball valve control device according to claim 1, characterized in that: The communication module is a 4G module. The ultra-low power microcontroller connects to the cloud platform via the 4G network, and the cloud platform connects to a mobile phone or computer via the network.

3. The novel low-power electric ball valve control device according to claim 1, characterized in that: The power module uses solar panel components and lithium batteries for charging and discharging.

4. The novel low-power electric ball valve control device according to claim 1, characterized in that: It also includes lithium battery charging chip U1, power conversion module U2, ultra-low power microcontroller U3, low power power chip U4, 4G module COM1, motor drive chip U5, angle sensor U6, and flow meter interface FLOW; Pin 1 of U1 is connected to resistor R3 to GND to set the charging current; Pin 2 of U1 is connected to GND; Pin 3 of U1 is connected to an LED to indicate the charging status; Pin 4 of U1 is connected to the positive terminal BAT of the battery, and capacitor C3 is connected to pin 4 to protect the chip and prevent spikes and glitch damage to the chip. Pin 5 of U1 is the battery output pin. The lithium battery supplies power to the load through this pin, which connects to pin 1 of U3 and pin 3 of the low-power power chip U4. Pin 6 of U1 is connected to pin 1 of the solar panel output terminal through resistor R1, and capacitor C1 is connected to pin 6 of U1 to protect the chip and prevent spikes and glitches from damaging the chip. Pin 1 of U2 is connected to pin 1 of U2 through inductor L1 to set the switching frequency; Pin 2 of U2 is connected to GND; Pin 3 of U2 is connected to pin 22 of U3 for power enable, which can control the power switch as needed; Pin 4 of U2 is connected to the pins of resistors R4 and R5. Resistors R4 and R5 are connected in series to pin 5 (V36) of U2 to provide feedback on the voltage output by the chip. Pin 5 of U2 is connected to pin 2 of COM1 of the 4G module to supply power to the 4G module; Pin 1 of COM1 is connected to GND; Pin 2 of COM1 is connected to the V36 power supply; Pin 3 of COM1 is connected to pin 21 of U3, and the UART output rings as a notification. Pin 4 of COM1 is connected to pin 20 of U3, and then connected to power supply V36 through pull-up resistor R6 for data reading. Pin 5 of COM1 is connected to pin 19 of U3 to send data; Connect pin 6 of COM1 to pin 18 of U3 to check if the data terminal is ready; Pin 7 of COM1 is connected to pin 17 of U3 to enable GPS; Pin 1 of U5 is connected to pin 29 of U3 via diode D2 to drive the motor; Pin 2 of U5 is connected to pin 30 of U3 via diode D1 to drive the motor; Pin 3 of U5 is connected to GND; U5's 4th pin is connected to the battery BAT; Pins 5 and 6 of U5 are connected to pin 1 of the motor terminal; Pins 7 and 8 of U5 are connected to pin 2 of the motor terminal; Pin 1 of the low-power power chip U4 is connected to pin 32 of U3 to control the GND of the low-power power chip U4; Pin 2 of the low-power power chip U4 is connected to pin 1 of the pressure sensor terminal to power the sensor; Pin 3 of the low-power power chip U4 is connected to pin 32 of U3 to control the GND of the low-power power chip U4; Pin 1 of U6 is connected to pin 15 of U3 to control the power supply of U6; The 3.3V power supply output from the internal chip at pin 2 of U6 is filtered by capacitor C11. Pin 4 of U6 is connected to GND; Pin 6 of U6 is connected to pin 2 of U3, and resistor R11 is connected to pin 2 as a pull-up resistor. (Chip data) Pin 7 of U6 is connected to pin 3 of U3, and resistor R10 is connected to pin 2 as a pull-up resistor for the chip clock. Connect pin 1 of FLOW to pin 28 of U3 for power control; Connect pin 2 of FLOW to pin 27 of U3, data; FLOW's third pin is connected to GND; Capacitors C8 and C9 are connected to pins 1 and 4 of U3 respectively for filtering.

5. The novel low-power electric ball valve control device according to claim 4, characterized in that: It also includes the program download interface SWD1. Pin 1 of SWD1 is connected to VCC; Pin 2 of SWD1 is connected to pin 24 of U3, which is the clock signal; Pin 3 of SWD1 is connected to GND; Connect pin 4 of SWD1 to pin 23 of U3 for data; Pin 5 of SWD1 is connected to pin 4 of U3 for U3 reset.

6. The novel low-power electric ball valve control device according to claim 4, characterized in that: The resistor R3 is a 2KΩ resistor, which limits the maximum charging current to 400mA.

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