User interface unit based on MBUS communication

Abstract

The utility model provides a user interface unit based on MBUS communication, the user interface unit comprises an MBUS communication multiplexing module, a power supply management module, a master control module and an intelligent interaction module, one end of the MBUS communication multiplexing module is connected with an ammeter, and the other end is connected with the power supply management module, the master control module and the intelligent interaction module; the power management module is connected with the main control module and the intelligent interaction module; the main control module is connected with the intelligent interaction module; therefore, the user interface unit is connected through the MBUS, so that the risk of electric shock and attenuation and shielding of wireless communication can be avoided; and meanwhile, an interaction bridge can be provided between the ammeter and the user through the intelligent interaction module, so that the usability of the ammeter and the user experience are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric meter, and particularly to a user interface unit based on MBUS communication. BACKGROUND

[0002] The user interface unit is a communication bridge between the electric meter and the user, which greatly enhances the ease of use, functional expansion and user experience of the electric meter by providing data display, user operation interface, state indication and interactive feedback functions. It not only makes the electric meter data more intuitive and easy to understand, but also supports advanced functions such as remote control, fault alarm, etc., and promotes the transformation and development of traditional electric meters to smart meters.

[0003] However, in the prior art, the traditional user interface unit usually relies on wired carrier reading technology or wireless reading technology to realize data transmission. The wired carrier reading technology needs to connect the user interface unit to the local power system to realize data transmission, but this method has potential safety hazards, i.e. the user may be at risk of electric shock when operating. In the wireless reading technology, the reliability and stability of wireless transmission are difficult to guarantee due to the shielding and interference of wireless signals by obstacles. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above technical problems, the present application provides a user interface unit based on MBUS communication, which comprises an MBUS communication multiplexing module, a power management module, a main control module and an intelligent interaction module.

[0005] One end of the MBUS communication multiplexing module is connected with the electric meter, and the other end is connected with the power management module, the main control module and the intelligent interaction module, for receiving data of the electric meter and converting the data into interactive information recognizable by the main control module and then transmitting the interactive information to the main control module, and rectifying the MBUS bus potential difference into voltage to ground and then outputting to the power management module.

[0006] The power management module is connected with the main control module and the intelligent interaction module, for supplying power to the main control module and the intelligent interaction module.

[0007] The main control module is connected with the intelligent interaction module, for processing the interactive information sent by the MBUS communication multiplexing module or the intelligent interaction module.

[0008] The intelligent interaction module is used for displaying or inputting interactive information.

[0009] In some embodiments of the present application, the intelligent interaction module comprises an interactive indication module, a data display module, a user operation module, a local upgrade module and a fault alarm module.

[0010] In some embodiments of the application, the MBUS communication multiplexing module includes chip U2, MBUS bus fixed seat J1, diode D2, diode D3, diode D4, resistor R3, resistor R4, diode D6, capacitor E2, diode D1, resistor R5, resistor R6, resistor R7, capacitor E1, capacitor C12, capacitor C13; wherein one end of the MBUS bus is connected to the electric meter, and the other end is connected to the MBUS bus fixed seat J1; one end of the diode D2 is connected to the 1 pin of the MBUS bus fixed seat J1, and the other end is grounded; one end of the diode D4 is connected to the 2 pin of the MBUS bus fixed seat J1, and the other end is grounded; one end of the diode D3 is connected to one end of the diode D2, and the other end is connected to one end of the diode D4; one end of the resistor R3 is connected to the diode D2, and the other end is connected to the 1 pin BUSL2 port of the chip U2; one end of the resistor R4 is connected to the diode D4, and the other end is connected to the 16 pin BUSL1 port of the chip U2; one end of the diode D6 is connected to the 2 pin VB port of the chip U2, and the other end is connected to one end of the capacitor E2; the other end of the capacitor E2 is grounded; one end of the diode D1 is connected to the 9 pin BAT port and the 11 pin VDD port of the chip U2, and the other end is connected to the common power supply port of the intelligent interaction module; one end of the resistor R5 is connected to the 4 pin RIDD port of the chip U2, and the other end is grounded; one end of the resistor R6 is connected to the 14 pin RIS port of the chip U2, and the other end is grounded; one end of the resistor R7 is connected to one end of the diode D1, and the other end is grounded; one end of the capacitor E1 is connected to the 3 pin STC port of the chip U2, and the other end is grounded; one end of the capacitor C12 is connected to the 6 pin SC port of the chip U2, and the other end is grounded; one end of the capacitor C13 is connected to one end of the resistor R7, and the other end is grounded; the 15 pin GND port of the chip U2 is grounded, the 8 pin TX end is connected to the receiving signal MCU RX of the master control module, and the 12 pin RX port is connected to the transmitting signal MCU TX of the master control module.

[0011] In some embodiments of the application, the power management module comprises chip U4, capacitor C19, capacitor C20, capacitor C21, capacitor C22, capacitor C23, capacitor C24, capacitor C25, resistor R13, resistor R14, resistor R15, resistor R16, resistor R17, and inductor L1; wherein one end of capacitor C21, capacitor C22, and resistor R14 is commonly connected to the 2-pin VB port of chip U2 and the 3-pin VIN port of chip U4; the other end of capacitor C21 and capacitor C22 is grounded; the other end of resistor R14 is connected to one end of resistor R16; the other end of resistor R16 is grounded; one end of capacitor C25 and one end of resistor R16 are commonly connected to the 5-pin EN port of chip U4, and the other end is commonly grounded with the 1-pin GND port of chip U4; one end of capacitor C19 is connected to the 6-pin BST port of chip U4, and the other end is connected to one end of resistor R13; the other end of resistor R13 and one end of inductor L1 are commonly connected to the 2-pin SW port of chip U4; the other end of inductor L1 is connected to one end of resistor R15; the other end of resistor R15 is connected to one end of resistor R17; the other end of resistor R17 is grounded; one end of capacitor C20, capacitor C23, and capacitor C24 is commonly connected to one end of inductor L1, and the other end of capacitor C20 is commonly connected to the 4-pin FB port of chip U4 with one end of resistor R17; the other end of capacitor C23 and capacitor C24 is commonly grounded.

[0012] In some embodiments of the application, the master control module adopts an ARMv7-M architecture 32bit Cortex-M4 MCU.

[0013] In some embodiments of the application, the local upgrade module comprises voltage stabilizing chip U3, capacitor C14, capacitor C15, capacitor C16, capacitor C17, capacitor C18, resistor R12, and diode D5; wherein one end of capacitor C14, capacitor C15, and resistor R12 is commonly connected to the VUSB port and the 1-pin IN port of chip U3; the other end of capacitor C14 and capacitor C15 is grounded; the other end of resistor R12 and one end of capacitor C18 are commonly connected to the 3-pin EN port of chip U3; the other end of capacitor C18 and the 2-pin GND port of chip U3 are commonly grounded; one end of capacitor C16 and capacitor C17 is commonly connected to the 5-pin OUT port of chip U3, and the other end is commonly grounded; one end of diode D5 is connected to the 5-pin OUT port of chip U3, and the other end is connected to the MCU of the master control module.

[0014] In some embodiments of the application, the fault alarm module comprises a buzzer, resistor R24, resistor R25, and triode Q2; wherein one end of resistor R25 is connected to the MCU of the master control module, and the other end is connected to the base of the triode; one end of the buzzer is connected to the collector of the triode, and the other end is connected to one end of resistor R24; the other end of resistor R24 is connected to the power management module.

[0015] Compared with the prior art, the utility model has the following advantages and beneficial effects: the user interface unit based on MBUS communication of the application includes MBUS communication multiplexing module, power management module, main control module and intelligent interaction module, one end of MBUS communication multiplexing module is connected with the electric meter, the other end is connected with power management module, main control module and intelligent interaction module; power management module is connected with main control module and intelligent interaction module; main control module is connected with intelligent interaction module; in this way, connect the user interface unit through MBUS bus, can avoid the risk of electric shock and the attenuation and shielding of wireless communication; simultaneously, through intelligent interaction module can provide the bridge of interaction between electric meter and user, significantly improved the usability and user experience of electric meter.

[0016] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present text. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings constituting a part of the present text are used to provide further understanding of the present text, the illustrative embodiments of the present text and the description thereof are used to explain the present text, and do not constitute improper limitation on the present text. In the drawings:

[0018] Figure 1 It is the principle diagram of the user interface unit based on MBUS communication provided by an exemplary embodiment of the application;

[0019] Figure 2 It is the circuit diagram of MBUS communication multiplexing module provided by an exemplary embodiment of the application;

[0020] Figure 3 It is the circuit diagram of power module provided by an exemplary embodiment of the application;

[0021] Figure 4 It is the circuit diagram of main control module provided by an exemplary embodiment of the application;

[0022] Figure 5 is the circuit diagram of local upgrade module provided by an exemplary embodiment of the application;

[0023] Figure 6 It is the circuit diagram of fault alarm module provided by an exemplary embodiment of the application;

[0024] Figure 7 It is the schematic diagram of data display module provided by an exemplary embodiment of the application;

[0025] Figure 8 It is the schematic diagram of user operation module provided by an exemplary embodiment of the application. DETAILED DESCRIPTION

[0026] In order to make the purposes, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other at will.

[0027] The user interface unit is a communication bridge between the electric meter and the user interaction. The user interface unit greatly enhances the ease of use, functional expansibility, and user experience of the electric meter by providing data display, user operation interface, state indication, and interaction feedback functions. It not only makes the electric meter data more intuitive and easy to understand, but also supports advanced functions such as remote control, fault alarm, and the like, and promotes the transformation and development of traditional electric meters to smart electric meters.

[0028] However, in the prior art, the traditional user interface unit usually relies on wired carrier reading technology or wireless reading technology to realize data transmission. The wired carrier reading technology needs to connect the user interface unit to the local power system to realize data transmission, but this method has potential safety hazards, i.e., the user may be at risk of electric shock when operating. In the wireless reading technology, the reliability and stability of wireless transmission are difficult to be guaranteed due to the shielding and interference of wireless signals by obstacles.

[0029] Based on this, the exemplary embodiments of the present application provide a user interface unit based on MBUS communication, which includes an MBUS communication multiplexing module, a power management module, a master control module, and an intelligent interaction module. One end of the MBUS communication multiplexing module is connected with the electric meter, and the other end is connected with the power management module, the master control module, and the intelligent interaction module. The power management module is connected with the master control module and the intelligent interaction module. The master control module is connected with the intelligent interaction module. In this way, the user interface unit is connected through the MBUS bus, which can avoid the risk of electric shock and the attenuation and shielding of wireless communication. At the same time, the intelligent interaction module can provide an interaction bridge between the electric meter and the user, significantly improving the ease of use and user experience of the electric meter.

[0030] An exemplary embodiment of the present application provides a user interface unit based on MBUS communication, which includes an MBUS communication multiplexing module, a power management module, a master control module, and an intelligent interaction module. Figure 1As shown, the user interface unit includes an MBUS communication multiplexing module, a power management module, a master control module, and an intelligent interaction module, and each functional module is integrated on a PCB board. One end of the MBUS communication multiplexing module is connected with the electric meter, and the other end is connected with the power management module, the master control module, and the intelligent interaction module, for receiving data of the electric meter, converting the data into interactive information recognizable by the master control module, and transmitting the interactive information to the master control module, and rectifying the potential difference of the MBUS bus into voltage to ground and outputting the voltage to the power management module; the power management module is connected with the master control module and the intelligent interaction module, for supplying power for the master control module and the intelligent interaction module; the master control module is connected with the intelligent interaction module, for processing the interactive information sent by the MBUS communication multiplexing module or the intelligent interaction module; and the intelligent interaction module is used for displaying or inputting the interactive information. In this way, by connecting the MBUS communication multiplexing module of the user interface unit with the MBUS bus, the risk of electric shock and the attenuation and shielding of wireless communication can be avoided; and by the intelligent interaction module, an interactive bridge between the electric meter and the user can be provided, and the usability of the electric meter and the user experience are significantly improved.

[0031] As shown in Figure 2 The MBUS communication multiplexing module includes a chip U2, an MBUS bus fixed seat J1, a diode D2, a diode D3, a diode D4, a resistor R3, a resistor R4, a diode D6, a capacitor E2, a diode D1, a resistor R5, a resistor R6, a resistor R7, a capacitor E1, a capacitor C12, and a capacitor C13; one end of the MBUS bus is connected with the electric meter, and the other end is connected with the MBUS bus fixed seat J1; one end of the diode D2 is connected with the 1 pin of the MBUS bus fixed seat J1, and the other end is grounded; one end of the diode D4 is connected with the 2 pin of the MBUS bus fixed seat J1, and the other end is grounded; one end of the diode D3 is connected with one end of the diode D2, and the other end is connected with one end of the diode D4; the diode D2 and the diode D4 are voltage-resistant TVS diodes, which can ensure the arbitrary wiring function of the MBUS bus, do not need to distinguish the high-potential bus and the low-potential bus, save the judgment operation of the wiring steps, and can effectively avoid the miswiring problem.

[0032] One end of the resistor R3 is connected with the diode D2, and the other end is connected with the 1 pin BUSL2 port of the chip U2; one end of the resistor R4 is connected with the diode D4, and the other end is connected with the 16 pin BUSL1 port of the chip U2; the series connection of the resistor R3 and the resistor R4 can prevent overcurrent damage to the subsequent circuit. One end of the diode D6 is connected with the 2 pin VB port of the chip U2, and the other end is connected with one end of the capacitor E2; the other end of the capacitor E2 is grounded; one end of the diode D1 is connected with the 9 pin BAT port and the 11 pin VDD port of the chip U2, and the other end is connected with the common power supply port of the intelligent interaction module; the common power supply port of the intelligent interaction module is the common power supply port of each sub-module in the intelligent interaction module, as shown in Figure 1As shown, the current output by the power management module first passes through the intelligent interaction module, and then flows into the MBUS communication multiplexing module through the common power port of the intelligent interaction module, so that the level of the entire circuit is at the same level, and the level of the entire circuit is stable. One end of the resistor R5 is connected to the 4-pin RIDD port of the chip U2, and the other end is grounded; one end of the resistor R6 is connected to the 14-pin RIS port of the chip U2, and the other end is grounded; one end of the resistor R7 is connected to one end of the diode D1, and the other end is grounded; one end of the capacitor E1 is connected to the 3-pin STC port of the chip U2, and the other end is grounded. The capacitor E1 is a 100UF electrolytic capacitor with a withstand voltage of 100UF, which ensures stable operation of the chip. One end of the capacitor C12 is connected to the 6-pin SC port of the chip U2, and the other end is grounded; one end of the capacitor C13 is connected to one end of the resistor R7, and the other end is grounded; the 15-pin GND port of the chip U2 is grounded, the 8-pin TX port is connected to the receiving signal MCU RX of the master control module, and the 12-pin RX port is connected to the transmitting signal MCU TX of the master control module, realizing connection and interaction with the master control module. The chip U2 internally outputs a unified 12V / 24V voltage to ground through rectification by the VB port. The diode D6 of the VB port is a unidirectional conduction Schottky diode, which can prevent current from flowing back and affecting the communication of the chip U2.

[0033] As shown in Figure 2 The power management module includes chip U4, capacitor C19, capacitor C20, capacitor C21, capacitor C22, capacitor C23, capacitor C24, capacitor C25, resistor R13, resistor R14, resistor R15, resistor R16, resistor R17, and inductor L1. One end of the capacitor C21, the capacitor C22, and the resistor R14 is commonly connected to the 2-pin VB port of the chip U2 and the 3-pin VIN port of the chip U4. The other end of the capacitor C21 and the capacitor C22 is grounded. The capacitor C21 and the capacitor C22 can perform voltage stabilization processing on the circuit to prevent the introduction of interference caused by sharp pulses. The stabilized voltage is directly connected to the 5-pin EN port of the chip U4, bypassing software control and maintaining a normally open state. In this way, the potential difference of the MBUS bus can be quickly converted to 3.3V, ensuring the rapid action and response of each module.

[0034] The other end of the resistor R14 is connected to one end of the resistor R16; the other end of the resistor R16 is grounded; one end of the capacitor C25 is connected to the 5-pin EN port of the chip U4 together with one end of the resistor R16, and the other end is grounded together with the 1-pin GND port of the chip U4; one end of the capacitor C19 is connected to the 6-pin BST port of the chip U4, and the other end is connected to one end of the resistor R13; the other end of the resistor R13 is connected to one end of the inductor L1 together with the 2-pin SW port of the chip U4; the other end of the inductor L1 is connected to one end of the resistor R15; the other end of the resistor R15 is connected to one end of the resistor R17; the other end of the resistor R17 is grounded; one end of the capacitor C20, the capacitor C23 and the capacitor C24 are connected together to one end of the inductor L1, and the other end of the capacitor C20 is connected to the 4-pin FB port of the chip U4 together with one end of the resistor R17; the other end of the capacitor C23 and the capacitor C24 are grounded together. The capacitors C20, C23 and C24 connected in parallel at the output end can ensure the stability of the output voltage, so that the power management module can accommodate different receiving and transmitting potential differences on the MBUS bus and uniformly convert different potential differences into 3.3V voltage to supply other functional modules.

[0035] As shown in Figure 4 The main control module adopts an ARMv7-M architecture 32bit Cortex-M4 MCU, which has 4-way USART, supports ISO7816-3 protocol, has 1-way CAN, supports ISO11898-1 standard protocol, has 1 USB 2.0 FS, built-in PHY, and supports Device / Host.

[0036] Preferably, the intelligent interaction module includes an interaction indication module, a data display module, a user operation module, a local upgrade module, and a fault alarm module.

[0037] Exemplarily, the interaction indication module is composed of pulse indication, alarm indication, and credit indication LED. The user interface unit obtains the current state of the electric meter through the MBUS bus, and the MCU of the main control module performs logical judgment and controls the interaction indication module to indicate the current state of the electric meter. In this way, the user can judge the current power consumption situation through the flashing time, frequency and lighting state of the LED, so as to better operate and manage the current power consumption behavior through the user interface unit.

[0038] As shown in Figure 5, the local upgrade module includes a voltage regulator chip U3, capacitors C14, C15, C16, C17, and C18, a resistor R12, and a diode D5. One end of capacitors C14, C15, and resistor R12 is connected to the VUSB port and pin 1 (IN) of chip U3; the other end of capacitors C14 and C15 is grounded. The other end of resistor R12 and one end of capacitor C18 are connected to pin 3 (EN) of chip U3; the other end of capacitor C18 is grounded along with pin 2 (GND) of chip U3. One end of capacitors C16 and C17 is connected to pin 5 (OUT) of chip U3, and the other end is grounded. One end of diode D5 is connected to pin 5 (OUT) of chip U3, and the other end is connected to the MCU of the main control module. Preferably, the local upgrade module uses the common Micro-USB interface for conversion and converts 5V voltage to 3.3V through the voltage regulator chip U3. For data transmission, the SWD protocol is selected for local upgrades, while also supporting internal upgrades via the ISP protocol. The upgrade scheme can be changed according to different needs.

[0039] like Figure 6 As shown, the fault alarm module includes a buzzer, resistors R24 and R25, and transistor Q2. One end of resistor R25 is connected to the MCU of the main control module, and the other end is connected to the base of the transistor. One end of the buzzer is connected to the collector of the transistor, and the other end is connected to one end of resistor R24. The other end of resistor R24 ​​is connected to the power management module. Preferably, an active electromagnetic buzzer is used for alarm operation, and the buzzer's alarm loudness can reach 85dB. After the signal is modulated and transmitted to the MCU of the main control module via the MBUS bus for analysis, the MCU of the main control module drives the base switch of transistor Q2 by sending a high-frequency PWM waveform. Transistor Q2 conducts, thereby driving the power supply to power the buzzer. Based on the buzzer's response, the user can determine the current power usage status.

[0040] like Figure 7 As shown, the data display module implements the data display function of this user interface unit through an LCD screen. The LCD screen uses 4COM and 31SEG for code segment control, and employs a 1 / 4 DUTY, 1 / 3 BIAS driving scheme to achieve 8-bit polling display and 4-bit OBIS code display. Preferably, the data display module is equipped with a backlight to ensure normal data interaction display at night.

[0041] like Figure 8 As shown, the user operation module is implemented by 12 keyboard keys. Users can query the current running status by entering short code commands. The user operation module is also equipped with backlit key indicators to ensure that users can operate normally at night.

[0042] In this application, the terms "comprise", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0043] While the preferred embodiments of the application have been described, additional variants and modifications can be suggested to those skilled in the art in the light of the basic inventive concept. The intended scope of the application is limited only by the claims that follow.

[0044] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A user interface unit based on MBUS communication, characterized in that The utility model relates to a kind of intelligent electric energy metering terminal, including MBUS communication multiplexing module, power management module, main control module and intelligent interaction module; One end of the MBUS communication multiplexing module is connected to the electric meter, and the other end is connected to the power management module, the main control module and the intelligent interaction module, for receiving data from the electric meter and converting the data into interactive information recognizable by the main control module, and then transmitting the interactive information to the main control module, while rectifying the potential difference of the MBUS bus to ground voltage and outputting it to the power management module; The power management module is connected to the main control module and the intelligent interaction module, for supplying power to the main control module and the intelligent interaction module. The main control module is connected to the intelligent interaction module, for processing interactive information sent by the MBUS communication multiplexing module or the intelligent interaction module. The intelligent interaction module is used for displaying or inputting interactive information.

2. A user interface unit based on MBUS communication according to claim 1, characterized in that, The intelligent interaction module includes an interaction indication module, a data display module, a user operation module, a local upgrade module and a fault alarm module.

3. A user interface unit based on MBUS communication according to claim 1, characterized in that, The MBUS communication multiplexing module includes a chip U2, an MBUS bus fixed seat J1, diodes D2, D3 and D4, resistors R3 and R4, a diode D6, capacitors E2, R5, R6 and R7, a diode D1, capacitors C12 and C13; one end of the MBUS bus is connected to the electric meter, and the other end is connected to the MBUS bus fixed seat J1; one end of the diode D2 is connected to pin 1 of the MBUS bus fixed seat J1, and the other end is grounded; one end of the diode D4 is connected to pin 2 of the MBUS bus fixed seat J1, and the other end is grounded; one end of the diode D3 is connected to one end of the diode D2, and the other end is connected to one end of the diode D4; one end of the resistor R3 is connected to the diode D2, and the other end is connected to pin 1 BUSL2 port of the chip U2; one end of the resistor R4 is connected to the diode D4, and the other end is connected to pin 16 BUSL1 port of the chip U2; one end of the diode D6 is connected to pin 2 VB port of the chip U2, and the other end is connected to one end of the capacitor E2; the other end of the capacitor E2 is grounded; one end of the diode D1 is connected to pin 9 BAT port and pin 11 VDD port of the chip U2, and the other end is connected to a common power supply port of the intelligent interaction module; one end of the resistor R5 is connected to pin 4 RIDD port of the chip U2, and the other end is grounded; one end of the resistor R6 is connected to pin 14 RIS port of the chip U2, and the other end is grounded; one end of the resistor R7 is connected to one end of the diode D1, and the other end is grounded; one end of the capacitor E1 is connected to pin 3 STC port of the chip U2, and the other end is grounded; one end of the capacitor C12 is connected to pin 6 SC port of the chip U2, and the other end is grounded; one end of the capacitor C13 is connected to one end of the resistor R7, and the other end is grounded; pin 15 GND port of the chip U2 is grounded, pin 8 TX port is connected to the receiving signal MCU RX of the main control module, and pin 12 RX port is connected to the transmitting signal MCU TX of the main control module.

4. A user interface unit based on MBUS communication according to claim 1, characterized in that, The power management module comprises a chip U4, a capacitor C19, a capacitor C20, a capacitor C21, a capacitor C22, a capacitor C23, a capacitor C24, a capacitor C25, a resistor R13, a resistor R14, a resistor R15, a resistor R16, a resistor R17 and an inductor L1; wherein one end of the capacitor C21, the capacitor C22 and the resistor R14 is commonly connected to a 2-pin VB port of the chip U2 and a 3-pin VIN port of the chip U4; the other end of the capacitor C21 and the capacitor C22 is grounded; the other end of the resistor R14 is connected to one end of the resistor R16; the other end of the resistor R16 is grounded; one end of the capacitor C25 and one end of the resistor R16 are commonly connected to a 5-pin EN port of the chip U4, and the other end is commonly grounded with a 1-pin GND port of the chip U4; one end of the capacitor C19 is connected to a 6-pin BST port of the chip U4, and the other end is connected to one end of the resistor R13; the other end of the resistor R13 and one end of the inductor L1 are commonly connected to a 2-pin SW port of the chip U4; the other end of the inductor L1 is connected to one end of the resistor R15; the other end of the resistor R15 is connected to one end of the resistor R17; the other end of the resistor R17 is grounded; one end of the capacitor C20, the capacitor C23 and the capacitor C24 is commonly connected to one end of the inductor L1, and the other end of the capacitor C20 is commonly connected to a 4-pin FB port of the chip U4 with one end of the resistor R17; the other end of the capacitor C23 and the capacitor C24 is commonly grounded.

5. The MBUS communication based user interface unit according to claim 1, characterized in that, The master control module adopts an MCU with an ARMv7-M architecture 32bit Cortex-M4.

6. A user interface unit based on MBUS communication according to claim 2, characterized in that, The local upgrade module comprises a voltage stabilizing chip U3, a capacitor C14, a capacitor C15, a capacitor C16, a capacitor C17, a capacitor C18, a resistor R12 and a diode D5; wherein one end of the capacitor C14, the capacitor C15 and the resistor R12 is commonly connected to a VUSB port and a 1-pin IN port of the chip U3; the other end of the capacitor C14 and the capacitor C15 is grounded; the other end of the resistor R12 and one end of the capacitor C18 are commonly connected to a 3-pin EN port of the chip U3; the other end of the capacitor C18 is commonly grounded with a 2-pin GND port of the chip U3; one end of the capacitor C16 and the capacitor C17 is commonly connected to a 5-pin OUT port of the chip U3, and the other end is commonly grounded; one end of the diode D5 is connected to the 5-pin OUT port of the chip U3, and the other end is connected to the MCU of the master control module.

7. A user interface unit based on MBUS communication according to claim 2, characterized in that, The fault alarm module comprises a buzzer, a resistor R24, a resistor R25 and a triode Q2; wherein one end of the resistor R25 is connected to the MCU of the master control module, and the other end is connected to the base of the triode; one end of the buzzer is connected to the collector of the triode, and the other end is connected to one end of the resistor R24; the other end of the resistor R24 is connected to the power management module.

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