A 4g system supporting wired meters

Abstract

The utility model discloses a 4G system of supporting wired instrument, including 4G chip U1, SIM card U5, MCU U2 and external wired instrument, the utility model is composed of SIM card U5, 4G chip U1, MCU U2 and external wired instrument, and SIM card seat U5 does communication with 4G chip U2 and makes 4G chip U2 can be normal networking, and 4G chip U2 is the core of whole system, and through 4G chip U2 can control the normal operation of whole system and the execution of low -power consumption strategy, and through 4G chip U2 can be connected with the server and realizes the data interaction with the server, and MCU U2 is connected with 4G chip U2, carries out data transmission, and MCU U2 and wired instrument pass through UART communication and carry out data transmission control wired instrument and gather the data such as battery voltage, current, temperature, SOC to the terminal user through display interaction.

Description

Technical Field

[0001] This utility model relates to the field of information transmission technology, specifically a 4G system that supports wired meters. Background Technology

[0002] With the rapid development of industries such as logistics and transportation, auto finance leasing, the sharing economy, personal safety protection, smart cities, and industrial automation, the market demand for real-time monitoring of equipment operating status is increasing. Traditional 4G monitoring systems mostly rely on backend servers or mobile apps to view data, requiring users to use smartphones or computers to obtain equipment location information, usage status, and battery parameters.

[0003] However, in real-world applications, many users do not have the means to access mobile phones or computers at any time, especially in outdoor work, among users with low levels of education, or in special work environments. This makes it difficult for them to obtain critical information in a timely manner, resulting in inefficient equipment management and potential safety hazards.

[0004] Existing 4G terminals generally lack local visualization and audible human-computer interaction capabilities, failing to meet the intelligent requirements of "real-time visibility, audibility, and controllability." Furthermore, most products still have shortcomings in power supply adaptability, low-power performance, positioning accuracy, communication stability, and system scalability, making it difficult to adapt to long-term stable operation in wide voltage environments (such as 10–100V DC power supply). Therefore, we propose a 4G system that supports wired instruments. Utility Model Content

[0005] The purpose of this invention is to provide a 4G system that supports wired meters, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a 4G system supporting wired meters, comprising a 4G chip U1, a SIM card U5, an MCU U2, and an external wired meter.

[0007] The SIM card U5 is used to access the mobile communication network;

[0008] The 4G chip U1 is used for network communication, data transmission and reception, low-power strategy control, and data interaction with a remote server.

[0009] The MCU U2 is electrically connected to the 4G chip U1. The MCU U2 is used for protocol parsing, data processing and control of external wired instruments.

[0010] The external wired instrument is connected to the MCU U2 through a wired instrument interface and a UART serial communication interface. The external wired instrument is used to collect and display the device's battery voltage, current, temperature, SOC, and location information.

[0011] Furthermore, pin 18 of the SIM card U5 is connected to capacitors C9 and C10, pin 17 of the SIM card U5 is connected to resistor R9, and pin 16 of the SIM card U5 is connected to resistor R10.

[0012] Furthermore, pin 13 of the SIM card U5 is connected to resistors R12 and R14.

[0013] Furthermore, the second pin of the 4G chip U1 is connected to resistor R3 and capacitor C4, and the other end of resistor R3 is connected to capacitor C3 and external positioning antenna.

[0014] Furthermore, pin 35 of the 4G chip U1 is connected to an external antenna module for data communication, pin 15 of the 4G chip U1 is connected to the collector of transistor Q1, the emitter of transistor Q1 is grounded through resistor 2, the other end of resistor R2 is connected to the base of transistor Q1 and resistor R1, and the other end of resistor R1 is connected to pin 16 of MCU U2.

[0015] Furthermore, pin 31 of the MCU U2 is connected to resistor R31 and the cathode of Zener diode D24. The other end of resistor R31 is connected to an external wired instrument, and the anode of Zener diode D24 is grounded.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention consists of a SIM card U5, a 4G chip U1, an MCU U2, and an external wired instrument. The SIM card slot U5 communicates with the 4G chip U2, enabling the 4G chip U2 to connect to the network normally. The 4G chip U2 is the core of the entire system. Through the 4G chip U2, the normal operation of the entire system and the execution of low-power strategies can be controlled. Furthermore, the 4G chip U2 can connect to the server to realize data interaction with the server. The MCU U2 is connected to the 4G chip U2 for data transmission. The MCU U2 communicates with the wired instrument via UART to transmit data and control the wired instrument to display and interact with the end user the collected data such as battery voltage, current, temperature, and SOC. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the system principle of this utility model;

[0018] Figure 2 This is the circuit diagram of the SIM card U5 of this utility model;

[0019] Figure 3 This is the circuit diagram of the MCU U2 of this utility model;

[0020] Figure 4 This is the first circuit diagram of the 4G chip U1 of this utility model;

[0021] Figure 5 This is the second circuit diagram of the 4G chip U1 of this utility model. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 This utility model provides a technical solution: a 4G system supporting wired meters, including a 4G chip U1, a SIM card U5, an MCU U2, and an external wired meter.

[0024] The SIM card U5 is used to access the mobile communication network;

[0025] The 4G chip U1 is used for network communication, data transmission and reception, low-power strategy control, and data interaction with a remote server.

[0026] The MCU U2 is electrically connected to the 4G chip U1. The MCU U2 is used for protocol parsing, data processing and control of external wired instruments.

[0027] The external wired instrument is connected to the MCU U2 through a wired instrument interface and a UART serial communication interface. The external wired instrument is used to collect and display the device's battery voltage, current, temperature, SOC, and location information.

[0028] Please see Figures 1-5 Pin 18 of the SIM card U5 is connected to capacitors C9 and C10, which are used for filtering during voltage input. Pin 17 of the SIM card U5 is connected to resistor R9, which controls the reset of the SIM card U5. Pin 16 of the SIM card U5 is connected to resistor R10, and the change in the level of resistor R10 is used to determine the change in the clock signal of pin 16 of the SIM card U5.

[0029] Please see Figures 1-5 The 13th pin of the SIM card U5 is connected to resistors R12 and R14. The change in the data of the 13th pin of the SIM card U5 is determined by the change in the level of resistors R12 and R14.

[0030] Please see Figures 1-5 The second pin of the 4G chip U1 is connected to resistor R3 and capacitor C4. The other end of resistor R3 is connected to capacitor C3 and an external positioning antenna. The positioning antenna forms a Π-type filter to eliminate interference signals from the positioning antenna in order to obtain the current positioning position.

[0031] Please see Figures 1-5 Pin 35 of the 4G chip U1 is connected to an external antenna module for data communication. Pin 15 of the 4G chip U1 is connected to the collector of transistor Q1. The emitter of transistor Q1 is grounded through resistor 2. The other end of resistor R2 is connected to the base of transistor Q1 and resistor R1. The other end of resistor R1 is connected to pin 16 of MCU U2. The 4G chip U1 completes data transmission by controlling the conduction segment of transistor Q1.

[0032] Please see Figures 1-5 Pin 30 of the MCU U2 is connected to resistor R30 and the cathode of Zener diode D23. The other end of resistor R30 is connected to an external wired instrument. The anode of Zener diode D23 is grounded. The Zener diode D23 is used to prevent excessive voltage from damaging the chip, while resistor R30 limits the current.

[0033] Please see Figures 1-5 Pin 31 of the MCU U2 is connected to resistor R31 and the cathode of Zener diode D24. The other end of resistor R31 is connected to an external wired instrument. The anode of Zener diode D24 is grounded. The Zener diode D24 is set to prevent the chip from being damaged by excessive voltage, while resistor R31 plays a current limiting role.

[0034] In use, the system is first connected to a wide-voltage DC power supply of 10–100V (such as an electric vehicle battery). The DC-DC conversion circuit stably converts the input voltage to the operating voltage required by the system, powering the 4G chip U1, SIM card U5, MCU U2, and external wired instruments. Then, the SIM card U5 is powered on, and its pin 18 is decoupled by capacitors C9 and C10 to ensure stable power supply. The 4G chip U1 resets the SIM card U5 through control resistor R9 to ensure that it is properly registered with the mobile network. By monitoring the level changes of the data on pins 16 and 13 of the SIM card U5, the normal communication status of the SIM card U5 is confirmed. After the 4G chip U1 completes its self-test, it obtains the current location information through the built-in GPS / BDS / LBS module. Simultaneously, MCU U2 starts up and enters standby mode, ready to receive commands from 4G chip U1 or external devices. 4G chip U1 connects to the positioning antenna via a Π-type filter circuit to filter out interference signals and improve GPS / BeiDou positioning accuracy. 4G chip U1 connects to the cellular network through the 4G antenna module connected to pin 35, establishing a TCP / IP connection with a remote server to upload data such as device location and operating status. MCU U2 outputs a control signal through pin 16, which controls the base of transistor Q1 via resistor R1. When the MCU outputs a high level, transistor Q1 conducts, pulling pin 15 of 4G chip U1 low, enabling data transmission or wake-up operations; when the output is low, transistor Q1 is cut off, disconnecting the connection. This circuit implements level control and signal isolation between MCU U2 and 4G chip U1, ensuring stable communication. The system supports access to an external battery management system (BMS) via serial port to obtain key parameters such as battery voltage, current, temperature, and SOC (remaining charge) in real time. Data (such as voltage, current, SOC, position, etc.) obtained from the 4G chip U1 or BMS will be sent to the external wired instrument via the UART serial port. The data is transmitted through pins 30 and 31 of MCUU2. Zener diodes D23 and D24 are set on the communication line between MCUU2 and the wired instrument. The cathode of Zener diode D23 is connected to pin 30 of MCUU2, and the anode is grounded. The cathode of Zener diode D24 is connected to pin 31 of MCUU2, and the anode is grounded. When the voltage of the external instrument line rises abnormally, Zener diodes D23 and D24 will break down in reverse, clamping the voltage within a safe range (such as 3.3V). Excess current is conducted to the ground wire to prevent high voltage from damaging MCUU2. Resistors R30 and R31 further limit the current, forming a double protection system together with Zener diodes D23 and D24.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A 4G system supporting wired meters, comprising a 4G chip U1, a SIM card U5, an MCU U2, and an external wired meter, characterized in that: The SIM card U5 is used to access the mobile communication network; The 4G chip U1 is used for network communication, data transmission and reception, low-power strategy control, and data interaction with a remote server. The MCU U2 is electrically connected to the 4G chip U1. The MCU U2 is used for protocol parsing, data processing and control of external wired instruments. The external wired instrument is connected to the MCU U2 through a wired instrument interface and a UART serial communication interface. The external wired instrument is used to collect and display the device's battery voltage, current, temperature, SOC, and location information.

2. The 4G system supporting wired meters according to claim 1, characterized in that: Pin 18 of the SIM card U5 is connected to capacitors C9 and C10, pin 17 of the SIM card U5 is connected to resistor R9, and pin 16 of the SIM card U5 is connected to resistor R10.

3. A 4G system supporting wired meters according to claim 2, characterized in that: Pin 13 of the SIM card U5 is connected to resistors R12 and R14.

4. A 4G system supporting wired meters according to claim 3, characterized in that: The second pin of the 4G chip U1 is connected to resistor R3 and capacitor C4, and the other end of resistor R3 is connected to capacitor C3 and external positioning antenna.

5. A 4G system supporting wired meters according to claim 4, characterized in that: Pin 35 of the 4G chip U1 is connected to an external antenna module for data communication. Pin 15 of the 4G chip U1 is connected to the collector of transistor Q1. The emitter of transistor Q1 is grounded through resistor 2. The other end of resistor R2 is connected to the base of transistor Q1 and resistor R1. The other end of resistor R1 is connected to pin 16 of MCU U2.

6. A 4G system supporting wired meters according to claim 5, characterized in that: Pin 30 of the MCU U2 is connected to resistor R30 and the cathode of Zener diode D23. The other end of resistor R30 is connected to an external wired instrument, and the anode of Zener diode D23 is grounded.

7. A 4G system supporting wired meters according to claim 6, characterized in that: Pin 31 of the MCU U2 is connected to resistor R31 and the cathode of Zener diode D24. The other end of resistor R31 is connected to an external wired instrument, and the anode of Zener diode D24 is grounded.

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