Low-power agricultural equipment control circuit

Abstract

The utility model discloses a low-power agricultural equipment control circuit, which is characterized by comprising a processor U1, a micro-control switch unit 1, a micro-control switch unit 2, a communication unit, a sensor acquisition unit power supply connection port and a battery unit, the processor U1 controls the micro-control switch unit 1 to supply power to the power supply connection port of the sensor acquisition unit based on the control signal, controls the micro-control switch unit 2 to supply power to the communication unit, and controls the power consumption mode of the processor U1; power is supplied to the communication unit and the sensor acquisition unit by controlling the on or off state of the micro-control switch unit, and the power consumption mode of the processor U1 is controlled, so that unnecessary power consumption is avoided, the energy consumption of equipment is greatly reduced, the cruising ability of the equipment is improved, remote control is realized, and agricultural production management is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of agricultural equipment control technology, and in particular to low-power agricultural equipment control circuits. Background Technology

[0002] In agricultural production, remote control and data acquisition of various agricultural equipment are necessary to improve production efficiency and management. Traditional agricultural equipment control methods typically employ wired or short-range wireless communication, which suffers from problems such as complex wiring and limited communication distance. 4G network communication offers advantages such as wide coverage, high transmission speed, and high stability, meeting the needs of remote control and data acquisition for agricultural equipment. However, 4G network communication consumes a significant amount of power, making the design of a low-power 4G network communication control circuit for agricultural equipment a pressing issue. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, this utility model provides a low-power agricultural equipment control circuit, which realizes the power supply of the communication unit and sensor acquisition unit by controlling the on or off state of the micro-control switch unit, and controls the power consumption mode of the processor U1, avoiding unnecessary power consumption, greatly reducing the energy consumption of the equipment, thereby improving the equipment's endurance, and also realizing remote control to facilitate agricultural production management.

[0004] To achieve the above-mentioned objectives, this utility model adopts the following technical solution:

[0005] The low-power agricultural equipment control circuit includes a processor U1, a micro-control switch unit 1, a micro-control switch unit 2, a communication unit, a power supply connection port for a sensor acquisition unit, and a battery unit. The processor U1 is connected to the micro-control switch unit 1, the micro-control switch unit 2, the sensor acquisition unit, the communication unit, and the battery unit. The communication unit receives control signals sent by the server and transmits them to the processor U1. Based on the control signals, the processor U1 controls the micro-control switch unit 1 to supply power to the power supply connection port of the sensor acquisition unit, controls the micro-control switch unit 2 to supply power to the communication unit, and controls the power consumption mode of the processor U1.

[0006] Furthermore, the processor U1 has two power modes: a sleep power mode and a low power mode.

[0007] Optionally, the processor U1 can be an STM32F103C8T6.

[0008] Furthermore, the communication unit includes a 4G communication chip U9, an RF chip RF1, an antenna, and a SIM card slot for inserting a SIM card to provide 4G network communication. The 4G communication chip U9 is connected to the processor U1, the RF chip RF1, the antenna, and the SIM card slot to enable communication with the server.

[0009] Furthermore, the micro-controller switch unit 1 includes resistors R8, R9, and R10, transistor Q2, and field-effect transistor Q3. The base of transistor Q2 is connected to one end of resistor R9 and one end of resistor R10, respectively. The collector of transistor Q2 is connected to one end of resistor R8 and the gate of field-effect transistor Q3, respectively. The emitter of transistor Q2 and the other end of resistor R10 are grounded. The source of field-effect transistor Q3 is connected to the other end of resistor R8 and the positive terminal of the power supply, respectively. The drain of field-effect transistor Q3 is connected to pin 2 of voltage conversion chip U8, and the other end of resistor R9 is connected to pin 46 of processor U1.

[0010] Furthermore, the micro-controller switch unit 2 includes resistors R13, R14, and R15, transistor Q4, and field-effect transistor Q5. The base of transistor Q4 is connected to one end of resistor R14 and one end of resistor R15, respectively. The collector of transistor Q4 is connected to one end of resistor R13 and the gate of field-effect transistor Q5, respectively. The emitter of transistor Q4 and the other end of resistor R15 are grounded. The source of field-effect transistor Q5 is connected to the other end of resistor R13 and the positive terminal of the power supply, respectively. The drain of field-effect transistor Q5 is connected to pin 18 of 4G communication chip U9, and the other end of resistor R14 is connected to pin 45 of processor U1.

[0011] Furthermore, the communication unit also includes a 485 communication module and a voltage conversion module. The voltage conversion module converts the voltage to a suitable operating voltage for the 485 communication module. The 485 communication module includes a MAX485 chip U2, resistors R1, R2, R3, and R4, a field-effect transistor Q1, a TVS diode U4, and a TVS diode U5. Pin 1 of the MAX485 chip U2 is connected to pin 22 of the processor U1. The source terminal of the field-effect transistor Q1 is connected to one end of resistor R2, pin 2 of the MAX485 chip U2, and pin 3 of the MAX485 chip U2. The gate terminal of MOSFET Q1 is connected to one end of resistor R1 and pin 21 of processor U1, respectively. The drain terminal of MOSFET Q3 is grounded. Pin 4 of voltage converter chip U8 is connected to the other end of resistor R1, the other end of resistor R2 and pin 8 of MAX485 chip U2, respectively. Pin 6 of MAX485 chip U2 is connected to one end of resistor R4 and one end of TVS diode U4, respectively. Pin 7 of MAX485 chip U2 is connected to one end of resistor R3 and one end of TVS diode U5, respectively. The other ends of resistor R4, TVS diode U4, resistor R3 and TVS diode U5 are grounded.

[0012] Furthermore, the voltage conversion module includes a voltage conversion chip U8, a capacitor C9, and a capacitor C13. Pin 2 of the voltage conversion chip U8 is connected to one end of the capacitor C9 and the microcontroller unit 1, respectively. Pin 4 of the voltage conversion chip U8 is connected to one end of the capacitor C13 and the 485 communication module, respectively. Pin 1 and pin 3 of the voltage conversion chip U8, the other end of the capacitor C9, and the other end of the capacitor C13 are grounded.

[0013] Furthermore, the low-power agricultural equipment control circuit also includes a solar charging unit for charging the battery unit. The solar charging unit is connected to both the processor U1 and the battery unit. When the light intensity reaches the charging light intensity threshold, the solar charging unit is controlled to charge the battery unit.

[0014] Furthermore, the solar charging unit includes a diode LED2, resistors R6 and R7, a charging chip U6, and a solar power generation module. Pin 1 of the charging chip U6 is connected to one end of resistor R6, and the other end of resistor R6 is connected to the negative terminal of diode LED2. Pin 2 of the charging chip U6 is grounded, pin 3 of the charging chip U6 is connected to the battery, pin 4 of the charging chip U6 is connected to the positive terminal of diode LED2, pin 2 of the Type-C interface, and the solar power generation module, respectively, and pin 6 of the charging chip U6 is connected to one end of resistor R7, and the other end of resistor R7 is grounded.

[0015] The beneficial effects of this application are: it enables the power supply to the communication unit and sensor acquisition unit by controlling the on or off states of micro-control switch unit 1 and micro-control switch unit 2, and controls the power consumption mode of processor U1 to enter sleep power mode and low power mode, thereby avoiding unnecessary power consumption, greatly reducing the energy consumption of the device, and thus improving the device's battery life.

[0016] It enables remote control of agricultural production management by receiving control signals sent by the server through the communication unit and transmitting them to the processor U1, and controlling the on or off states of micro-control switch unit 1 and micro-control switch unit 2. It also enables charging through solar energy to improve the equipment's battery life. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1This is a schematic diagram of the processor U1 connection circuit of the low-power agricultural equipment control circuit of this utility model;

[0019] Figure 2 This is a schematic diagram of the 485 communication module circuit of the low-power agricultural equipment control circuit of this utility model;

[0020] Figure 3 This is a circuit diagram of the micro-controlled switch unit 1 and the micro-controlled switch unit 2 of this utility model;

[0021] Figure 4 This is a schematic diagram of the connection circuit between the 4G communication chip U9, the radio frequency chip RF1, and the antenna of this utility model;

[0022] Figure 5 This is a schematic diagram of the SIM card slot connection circuit for the low-power agricultural equipment control circuit of this utility model;

[0023] Figure 6 This is a schematic diagram of the solar charging unit circuit of this utility model. Detailed Implementation

[0024] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0025] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. This utility model can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] Example 1

[0027] The low-power agricultural equipment control circuit includes a processor U1, microcontroller unit 1, microcontroller unit 2, a communication unit, a power supply connection port for the sensor acquisition unit, and a battery unit. The processor U1 is connected to microcontroller unit 1, microcontroller unit 2, the sensor acquisition unit, the communication unit, and the battery unit. The communication unit receives control signals from the server and transmits them to the processor U1. Based on the control signals, the processor U1 controls microcontroller unit 1 to supply power to the sensor acquisition unit's power supply connection port, controls microcontroller unit 2 to supply power to the communication unit, and controls the power consumption mode of the processor U1. The processor U1's power consumption modes include a sleep mode and a low-power mode. The processor U1 can be an STM32F103C8T6, and the battery unit can be a lithium battery.

[0028] The communication unit includes a 4G communication chip U9, an RF chip RF1, an antenna, and a SIM card slot for inserting a SIM card to provide 4G network communication. The 4G communication chip U9 is connected to the processor U1, the RF chip RF1, the antenna, and the SIM card slot to enable communication with the server. Specifically, the implementation circuit may include the 4G communication chip U9, resistors R11 and R12, capacitors C1, C2, C3, C4, C5, and C6, the RF chip RF1, the antenna, and the SIM card slot for inserting a SIM card to provide 4G network communication. Pin 23 of the 4G communication chip U9 is connected to one end of resistor R11 and one end of resistor R12. The other end of resistor R12 is connected to pin 1 of the RF chip RF1, and the other end of resistor R11 is connected to the antenna. Pin 18 of the communication chip U9 is connected to the micro-control switch unit 2 and one end of capacitor C1. Pin 6 of the SIM card slot is connected to one end of capacitor C6, and pin 3 of the SIM card slot is connected to one end of capacitor C5. Pin 2 of the SIM card slot is connected to one end of capacitor C4. Pin 1 of the SIM card slot is connected to one end of capacitors C3 and C2 respectively. The other ends of capacitors C1, C2, C3, C4, C5, and C6 are all grounded. Pin 10 of the 4G communication chip U9 is connected to pin 2 of the SIM card slot. Pin 11 of the 4G communication chip U9 is connected to pin 3 of the SIM card slot. Pin 12 of the 4G communication chip U9 is connected to pin 6 of the SIM card slot. Pin 13 of the 4G communication chip U9 is connected to pin 1 of the SIM card slot. Pin 14 of the communication chip U9 is connected to pin 31 of the processor U1. Pin 145 of the communication chip U9 is connected to pin 30 of the processor U1. The model of the 4G communication chip U9 can be AIR700E.

[0029] The micro-controller switch unit 1 includes resistors R8, R9, and R10, transistor Q2, and field-effect transistor Q3. The base of transistor Q2 is connected to one end of resistor R9 and one end of resistor R10. The collector of transistor Q2 is connected to one end of resistor R8 and the gate of field-effect transistor Q3. The emitter of transistor Q2 and the other end of resistor R10 are grounded. The source of field-effect transistor Q3 is connected to the other end of resistor R8 and the positive terminal of the power supply. The drain of field-effect transistor Q3 is connected to pin 2 of voltage conversion chip U8. The other end of resistor R9 is connected to pin 46 of processor U1.

[0030] The micro-controller switch unit 2 includes resistors R13, R14, and R15, transistor Q4, and field-effect transistor Q5. The base of transistor Q4 is connected to one end of resistor R14 and one end of resistor R15. The collector of transistor Q4 is connected to one end of resistor R13 and the gate of field-effect transistor Q5. The emitter of transistor Q4 and the other end of resistor R15 are grounded. The source of field-effect transistor Q5 is connected to the other end of resistor R13 and the positive terminal of the power supply. The drain of field-effect transistor Q5 is connected to pin 18 of 4G communication chip U9. The other end of resistor R14 is connected to pin 45 of processor U1.

[0031] The communication unit also includes a 485 communication module and a voltage conversion module. The 485 communication module is connected to both the processor U1 and the voltage conversion module. The voltage conversion module converts the voltage to a suitable operating voltage for the 485 communication module. The 485 communication module includes a MAX485 chip U2, resistors R1, R2, R3, and R4, a field-effect transistor Q1, a TVS diode U4, and a TVS diode U5. Pin 1 of the MAX485 chip U2 is connected to pin 22 of the processor U1. The source terminal of the field-effect transistor Q1 is connected to one end of resistor R2, pin 2 of the MAX485 chip U2, and pin 3 of the MAX485 chip U2. The gate terminal of MOSFET Q1 is connected to one end of resistor R1 and pin 21 of processor U1, respectively. The drain terminal of MOSFET Q3 is grounded. Pin 4 of voltage conversion chip U8 is connected to the other end of resistor R1, the other end of resistor R2 and pin 8 of MAX485 chip U2, respectively. Pin 6 of MAX485 chip U2 is connected to one end of resistor R4 and one end of TVS diode U4, respectively. Pin 7 of MAX485 chip U2 is connected to one end of resistor R3 and one end of TVS diode U5, respectively. The other ends of resistor R4, TVS diode U4, resistor R3 and TVS diode U5 are grounded.

[0032] The voltage conversion module includes a voltage conversion chip U8, a capacitor C9, and a capacitor C13. Pin 2 of the voltage conversion chip U8 is connected to one end of the capacitor C9 and the microcontroller unit 1, respectively. Pin 4 of the voltage conversion chip U8 is connected to one end of the capacitor C13 and the 485 communication module, respectively. Pin 1 and pin 3 of the voltage conversion chip U8, the other end of the capacitor C9, and the other end of the capacitor C13 are grounded.

[0033] To further ensure the equipment can operate for extended periods, the low-power agricultural equipment control circuit also includes a solar charging unit for charging the battery unit. The solar charging unit is connected to both the processor U1 and the battery unit. When the light intensity reaches the charging light intensity threshold, the solar charging unit is controlled to charge the battery unit. The solar charging unit includes a diode LED2, resistors R6 and R7, a charging chip U6, and a solar power generation module. Pin 1 of the charging chip U6 is connected to one end of resistor R6, and the other end of resistor R6 is connected to the negative terminal of diode LED2. Pin 2 of the charging chip U6 is grounded. Pin 3 of the charging chip U6 is connected to the battery. Pin 4 of the charging chip U6 is connected to the positive terminal of diode LED2, pin 2 of the Type-C interface, and the solar power generation module. Pin 6 of the charging chip U6 is connected to one end of resistor R7, and the other end of resistor R7 is grounded.

[0034] During operation, after the processor U1 is awakened and begins working, it controls the micro-controller unit 1 to turn on via pins, supplying power to the sensors and communication chip. For example, the processor U1 compares and analyzes various collected data with pre-set threshold values. If the data exceeds the upper limit or falls below the lower limit, the processor U1 immediately triggers an alarm mechanism, including audible and visual alarms, network alarms, and SMS alarms, to ensure the safety and stability of the device's operation. The processor U1 also controls the micro-controller unit 1 to turn off via pins and controls the micro-controller unit 2 to turn on, supplying power to the 4G communication chip U9 and the SIM card slot, acquiring the device's battery level and geographical location information. The geographical location information can be acquired using either BeiDou + GPS positioning or BeiDou positioning alone to meet the needs of different scenarios. Simultaneously, the processor U1 transmits the collected data to the server in a timely and accurate manner via 4G communication using communication protocols such as MQTT and HTTP, achieving real-time data transmission and interaction.

[0035] The server sends control commands to the processor U1 via a 4G network using communication protocols such as MQTT and HTTP. These commands allow the processor U1 to enter sleep or low-power modes to conserve energy. They also allow modification of key settings such as the processor U1's data acquisition frequency, sleep time, and threshold values ​​for various data parameters. For example, the server can command the processor U1 to enter sleep mode for 10 minutes, then begin collecting data on air temperature and humidity and upload the data to the platform. If the detected air temperature is below 5 degrees Celsius, the processor U1 will immediately trigger an alarm to alert relevant personnel to take appropriate measures. Upon receiving downlink data, the processor U1 controls the micro-switch unit 2 to disconnect via a pin and enters a low-power sleep state according to a pre-set time, waking up again after the set time to repeat the above steps.

[0036] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A low power consumption agricultural device control circuit, characterized by, The system includes a processor U1, a micro-control switch unit 1, a micro-control switch unit 2, a communication unit, a power supply connection port for a sensor acquisition unit, and a battery unit. The processor U1 is connected to the micro-control switch unit 1, the micro-control switch unit 2, the sensor acquisition unit, the communication unit, and the battery unit. The communication unit receives control signals sent by the server and transmits them to the processor U1. Based on the control signals, the processor U1 controls the micro-control switch unit 1 to supply power to the power supply connection port of the sensor acquisition unit, controls the micro-control switch unit 2 to supply power to the communication unit, and controls the power consumption mode of the processor U1.

2. The low power agricultural device control circuit of claim 1, wherein, The communication unit includes a 4G communication chip U9, a radio frequency chip RF1, an antenna, and a SIM card slot for inserting a SIM card to provide 4G network communication. The 4G communication chip U9 is connected to the processor U1, the radio frequency chip RF1, the antenna, and the SIM card slot to enable communication with the server.

3. The low power agricultural device control circuit of claim 2, wherein, The communication unit also includes a 485 communication module and a voltage conversion module. The 485 communication module is connected to the processor U1 and the voltage conversion module respectively. The voltage conversion module converts the voltage into a suitable operating voltage for the 485 communication module.

4. The low power consumption agricultural device control circuit according to claim 3, characterized by, The voltage conversion module includes a voltage conversion chip U8, a capacitor C9, and a capacitor C13. Pin 2 of the voltage conversion chip U8 is connected to one end of the capacitor C9 and the micro-control switch unit 1, respectively. Pin 4 of the voltage conversion chip U8 is connected to one end of the capacitor C13 and the 485 communication module, respectively. Pin 1 and pin 3 of the voltage conversion chip U8, the other end of the capacitor C9, and the other end of the capacitor C13 are grounded.

5. The low power consumption agricultural device control circuit according to claim 3, characterized by, The 485 communication module includes a MAX485 chip U2, resistors R1, R2, R3, and R4, a field-effect transistor Q1, a TVS diode U4, and a TVS diode U5. Pin 1 of the MAX485 chip U2 is connected to pin 22 of the processor U1. The source terminal of the field-effect transistor Q1 is connected to one end of resistor R2, pin 2 of the MAX485 chip U2, and pin 3 of the MAX485 chip U2. The gate terminal of the field-effect transistor Q1 is connected to one end of resistor R1 and pin 21 of the processor U1. The drain terminal of Q3 should be grounded. Pin 4 of voltage conversion chip U8 is connected to the other end of resistor R1, the other end of resistor R2, and pin 8 of MAX485 chip U2. Pin 6 of MAX485 chip U2 is connected to one end of resistor R4 and one end of TVS diode U4. Pin 7 of MAX485 chip U2 is connected to one end of resistor R3 and one end of TVS diode U5. The other ends of resistor R4, TVS diode U4, resistor R3, and TVS diode U5 are grounded.

6. The low power consumption agricultural device control circuit according to claim 1, characterized by, The micro-controlled switching unit 1 includes resistors R8, R9, and R10, transistor Q2, and field-effect transistor Q3. The base of transistor Q2 is connected to one end of resistor R9 and one end of resistor R10. The collector of transistor Q2 is connected to one end of resistor R8 and the gate of field-effect transistor Q3. The emitter of transistor Q2 and the other end of resistor R10 are grounded. The source of field-effect transistor Q3 is connected to the other end of resistor R8 and the positive terminal of the power supply. The drain of field-effect transistor Q3 is connected to pin 2 of voltage conversion chip U8. The other end of resistor R9 is connected to pin 46 of processor U1.

7. The low power consumption agricultural device control circuit according to claim 1, characterized by, The micro-controlled switch unit 2 includes resistors R13, R14, and R15, a transistor Q4, and a field-effect transistor Q5. The base of transistor Q4 is connected to one end of resistor R14 and one end of resistor R15. The collector of transistor Q4 is connected to one end of resistor R13 and the gate of field-effect transistor Q5. The emitter of transistor Q4 and the other end of resistor R15 are grounded. The source of field-effect transistor Q5 is connected to the other end of resistor R13 and the positive terminal of the power supply. The drain of field-effect transistor Q5 is connected to pin 18 of 4G communication chip U9. The other end of resistor R14 is connected to pin 45 of processor U1.

8. The low power consumption agricultural device control circuit according to any one of claims 1 to 7, characterized by, It also includes a solar charging unit for charging the battery unit. The solar charging unit is connected to the processor U1 and the battery unit respectively. When the light intensity reaches the charging light intensity threshold, the solar charging unit is controlled to charge the battery unit.

9. The low power consumption agricultural device control circuit according to claim 8, characterized by, The solar charging unit includes a diode LED2, resistors R6 and R7, a charging chip U6, and a solar power generation module. Pin 1 of the charging chip U6 is connected to one end of resistor R6, and the other end of resistor R6 is connected to the negative terminal of diode LED2. Pin 2 of the charging chip U6 is grounded. Pin 3 of the charging chip U6 is connected to the battery. Pin 4 of the charging chip U6 is connected to the positive terminal of diode LED2, pin 2 of the Type-C interface, and the solar power generation module, respectively. Pin 6 of the charging chip U6 is connected to one end of resistor R7, and the other end of resistor R7 is grounded.

Images