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CN-224217007-U - Dual-mode Bluetooth electric mower instrument

CN224217007UCN 224217007 UCN224217007 UCN 224217007UCN-224217007-U

Abstract

The utility model provides a dual-mode Bluetooth electric mower instrument which comprises a shell, a liquid crystal screen and an internal circuit module, wherein intelligent interaction and high-efficiency management are realized through integrating an MCU control chip, a dual-mode Bluetooth module, CAN bus communication, a quiescent current control circuit and a data storage circuit. The instrument displays the running state in real time through the liquid crystal screen, supports the Bluetooth to be connected with the mobile equipment for remote control, and cooperates with other ECUs of the electric mower through the CAN bus. The quiescent current control circuit reduces standby power consumption to microampere level, and EEPROM stores key data to ensure that power failure is not lost. The instrument solves the problems of poor interactivity and high power consumption of the traditional equipment, and is suitable for household and commercial electric mowers.

Inventors

  • LI DONGDONG

Assignees

  • 宁波科达仪表有限公司

Dates

Publication Date
20260508
Application Date
20250507

Claims (10)

  1. 1. The utility model provides a bimodulus bluetooth electric mower instrument, its characterized in that includes the casing and installs the LCD screen on the casing, the inside control circuit and the bluetooth module circuit of being equipped with of casing, control circuit is equipped with MCU control chip, bluetooth module circuit with MCU control chip links to each other, MCU control chip connects quiescent current control circuit, data storage circuit to and CAN circuit, quiescent current control circuit connects main power supply circuit.
  2. 2. The dual-mode bluetooth electric mower instrument according to claim 1, wherein the bluetooth module circuit comprises a dual-mode bluetooth chip, a pin PB0 of the dual-mode bluetooth chip is connected with a resistor R29, a pin PB1 is connected with a resistor R30, the other ends of the resistor R29 and the resistor R30 are respectively connected with a control chip, a pin PB0 and a pin PB1 are respectively connected with a pull-up resistor R64 and a pull-up resistor R63, and a pin PB0 and a pin PB1 are respectively connected with a program writing interface circuit.
  3. 3. The dual-mode Bluetooth electric mower instrument according to claim 1, wherein the quiescent current control circuit comprises a triode 0Q1 and a triode 0Q2, an emitter of the triode 0Q1 is grounded, a base of the triode 0Q1 is connected with the MCU control chip, a collector of the triode 0Q1 is connected with a resistor 0R3, the other end of the resistor 0R3 is connected with a base of the triode 0Q2, an emitter of the triode 0Q2 is connected with a power supply, and a collector of the triode 0Q2 is connected with a capacitor 0C1.
  4. 4. The dual mode bluetooth powered mower meter of claim 1 or 2 further comprising a headlight control signal circuit, the headlight control signal circuit being connected to the MCU control chip.
  5. 5. The dual mode bluetooth electric mower instrument according to claim 4, wherein the headlight control signal circuit comprises a triode 5Q6, an emitter of the triode 5Q6 is grounded, a base of the triode 5Q6 is connected with a resistor 5R30, and a collector of the triode 5Q6 is connected with a power supply and an MCU control chip.
  6. 6. The dual-mode bluetooth electric mower instrument according to claim 1 or 2, wherein the CAN circuit converts a TTL level signal of the MCU control chip into a differential signal of the CAN bus through the CAN transceiver chip, the dual-mode bluetooth electric mower instrument comprises the CAN transceiver chip and a TVS2 diode, the pins TXD, RXD and STB of the CAN transceiver chip are respectively connected with the MCU control chip, the TVS2 diode is connected with a CAN bus termination resistor and a filter capacitor, and a common mode inductance L2 is arranged in the middle to suppress bus noise.
  7. 7. The dual-mode bluetooth electric mower instrument according to claim 1 or 2, wherein the instrument power-on detection circuit comprises a triode 2Q1, an emitter of the triode 2Q1 is grounded, a base electrode of the triode 2Q1 is connected with a resistor 2R4, and a collector electrode of the triode 2Q1 is connected with a power supply and an MCU control chip.
  8. 8. The dual mode bluetooth powered mower meter of claim 1 or 2, further comprising a data storage circuit, said data storage circuit being connected to the control chip.
  9. 9. The dual mode bluetooth electric mower instrument according to claim 8, wherein the data storage circuit comprises an EEPROM chip, pins A0, A1, A2 of the EEPROM chip are all grounded, pins SCL, SDA are respectively connected to the control chip, pin VCC1 connects the power supply and filter capacitors C2 and C21, and write protect pin WP is grounded.
  10. 10. The dual mode bluetooth electric mower instrument according to claim 1, wherein the liquid crystal screen on the housing comprises a backlight indicator light circuit and a liquid crystal driving and displaying circuit, the backlight indicator light circuit is connected with the MCU control chip and comprises a plurality of LED indicator lights, the liquid crystal driving and displaying circuit comprises a HT16c23_64LQFP-a chip, the pins SDA and SCL of the liquid crystal driving and displaying circuit are respectively connected with the resistor R27 and the resistor R28, and the other ends of the resistor R27 and the resistor R28 are respectively connected with the control chip.

Description

Dual-mode Bluetooth electric mower instrument Technical Field The utility model relates to the technical field of electric mower meters, in particular to a dual-mode Bluetooth electric mower meter. Background With the improvement of environmental awareness and the improvement of battery technology, the electric mower gradually replaces the traditional fuel mower to become main equipment for maintenance of household and commercial lawns, has the advantages of low noise, zero emission, simplicity and convenience in maintenance and the like, but has a room for improvement in the intelligent degree and user experience, and the electric mower meters in the market at present mainly provide basic information display such as electric quantity, working states and fault prompts, but still have the problems that, for example, information display is single, most meters only adopt LED indicator lamps or simple LCD screens, complex data cannot be intuitively displayed, interactivity is poor, users cannot easily set parameters or switch modes through the meters, physical keys or additional remote control equipment are needed, real-time data interaction with a mobile terminal cannot be realized due to lack of intelligentization, functions such as remote monitoring and historical data analysis are not realized, and the like are weak in environmental adaptability, and the visibility and durability of the traditional meters are poor in strong light or humid environments, so that user experience is influenced. The Chinese patent document CN115039560B discloses an electric mower electrical control system based on a CAN bus, an energy control module, an instrument display module, a walking control module, a mowing control module and a sensor module are designed in the electrical control system based on the CAN bus technology, signal acquisition, receiving, analyzing, processing and transmission are completed through the CAN module and an interface thereof, the integration level and the information processing efficiency of the electric mower are improved, the instrument display module displays the system running state and fault key information of the whole mower and carries out alarm processing, the functions of the instrument display module in the technical scheme are concentrated on basic information display (such as electric quantity, fault codes and the like), and intelligent interaction (such as Bluetooth connection with mobile equipment) is not mentioned. Disclosure of Invention The utility model provides an electric mower instrument, which aims to solve the problems of insufficient intelligent interaction, excessive power consumption when classical Bluetooth is singly used and the like of the traditional electric mower instrument through the design of a control circuit, a Bluetooth module circuit, a static current control circuit, a data storage circuit and a CAN circuit, and is suitable for use scenes needing to balance the functional richness and power consumption control of an electric mower. In order to achieve the above purpose, the utility model provides a dual-mode Bluetooth electric mower instrument, which comprises a shell and a liquid crystal screen arranged on the shell, wherein a control circuit and a Bluetooth module circuit are arranged in the shell, the control circuit is provided with an MCU control chip, the Bluetooth module circuit is connected with the MCU control chip, the MCU control chip is connected with a static current control circuit, a data storage circuit and a CAN circuit, and the static current control circuit is connected with a main power supply circuit. The MCU control chip is of a Huada HC32L072JA type, the Huada HC32L072JA is used as a main control chip, the data is received or transmitted through communication of a CAN bus and other equipment, the liquid crystal screen is driven to control displayed contents (such as current speed, current electric quantity and load value) through an I2C interface, and in addition, the main control chip CAN process user instructions received by the Bluetooth module to control the motor to execute corresponding functions. Preferably, the bluetooth module circuit comprises a dual-mode bluetooth chip, a pin PB0 of the dual-mode bluetooth chip is connected with a resistor R29, a pin PB1 is connected with a resistor R30, the other ends of the resistor R29 and the resistor R30 are respectively connected with a control chip, a pin PB0 and a pin PB1 are respectively connected with a pull-up resistor R64 and a pull-up resistor R63, and a pin PB0 and a pin PB1 are respectively connected with a program writing interface circuit. The dual-mode Bluetooth chip supports coexistence of high bandwidth and low power consumption scenes, classical Bluetooth realizes transmission of high-quality audio, BLE Bluetooth maintains low power consumption mobile phone APP connection, multi-equipment coordination capability is enhanced, user experience is optimized, automatic switchi