Internet of Things intelligent three-phase multi-rate ammeter based on LTE CAT1 communication technology

Abstract

The utility model relates to the technical field of three-phase electricity meters, in particular to an Internet of Things intelligent three-phase multi-rate electricity meter based on an LTE CAT1 communication technology, which solves the problems of poor reliability and unstable communication service in the prior art, and comprises a switching power supply module, an electric energy metering module, a double-core system and a high-precision real-time clock module, through the arrangement of the switching power supply module, the key module and other structures, the electric energy metering module comprises voltage sampling and current sampling and is used for active electricity metering, a user can set electricity prices in different time periods through an Internet of Things platform, and the personalized electricity utilization requirements of the user are met; the switch power supply module comprises three-phase power input, surge protection, full-wave rectification, filtering processing and switch power supply processing, the switch power supply module provides a stable and reliable direct-current power supply for the whole system, the key module is used for switching different information on the display screen and realizing on-site closing, and through intelligent switching, it is ensured that the ammeter is kept in an available state in communication.

Description

Technical Field

[0001] The utility model relates to the technical field of three-phase electricity meters, in particular to an Internet of Things intelligent three-phase multi-rate electricity meter based on LTE CAT1 communication technology. Background Art

[0002] At present, an IoT smart three-phase multi-rate electricity meter based on LTE CAT1 communication technology is an electricity meter that integrates multiple advanced technologies and can meet the needs of different users.

[0003] With the continuous development of society, the accurate measurement and reasonable management of electricity have become increasingly important issues. Traditional single-rate electricity meters are unable to meet the problem of price differences between peak and off-peak periods, and it is difficult to reflect users' actual electricity costs. At the same time, due to the limitations of the data collection method of traditional electricity meters, real-time data transmission and remote monitoring cannot be achieved, making it difficult for power suppliers to effectively allocate electricity resources.

[0004] Against the backdrop of the rapid development of new and renewable energy, this patent provides a new solution for upgrading the power industry, particularly in data transmission and processing. Furthermore, to enhance LTE CAT1 communication reliability, the innovative use of dual-SIM single-standby technology ensures users seamlessly enjoy more stable and efficient communication services. Utility Model Content

[0005] The purpose of the utility model is to provide an Internet of Things intelligent three-phase multi-rate electricity meter based on LTE CAT1 communication technology, which solves the problems of poor reliability and unstable communication services.

[0006] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0007] To achieve the above objectives, the present invention proposes an IoT intelligent three-phase multi-rate electricity meter based on LTE CAT1 communication technology, comprising a switching power supply module, an energy metering module, a dual-core system, a high-precision real-time clock module, a communication module, a key module, and a storage module. The dual-core system includes a central controller of the energy metering module and a central controller of the communication module, ensuring that the energy metering module and the communication module do not interfere with each other.

[0008] The electric energy metering module includes voltage sampling and current sampling for active energy metering. Users can set electricity prices for different time periods through the Internet of Things platform to meet their personalized electricity needs; the high-precision real-time clock module includes a clock chip and a battery for accurate billing; the communication module includes a primary SIM card and a secondary SIM card. The primary SIM card is used for primary communication, and the secondary SIM card is used as a backup to ensure reliable communication.

[0009] Preferably, the central controller of the electric energy metering module adopts a CH32F203RB chip, and the central controller of the communication module adopts a CH32F203RC chip.

[0010] Preferably, the storage module adopts MB85RC16 storage chip and ZD25WQ80 storage chip.

[0011] Preferably, the clock chip in the high-precision real-time clock module adopts an RX8025T chip.

[0012] Preferably, the electric energy metering module adopts the RN8302B chip.

[0013] Preferably, the communication module includes LTE CAT1 module power management, LTE CAT1 transceiver module, primary SIM card, secondary SIM card, and primary antenna RF processing.

[0014] 1. The utility model adopts the setting of switching power supply module, key module and other structures. The electric energy metering module includes voltage sampling and current sampling for active energy metering. Users can set electricity prices for different time periods through the Internet of Things platform to meet the user's personalized electricity needs. The switching power supply module includes three-phase power input, surge protection, full-wave rectification, filtering processing, and switching power supply processing. The switching power supply module provides a stable and reliable DC power supply for the entire system. The key module is used to switch different information on the display screen and realize local closing. Through intelligent switching, it ensures that the meter remains available during communication.

[0015] 2. The utility model adopts the arrangement of real-time clock module, communication module and other structures. The high-precision real-time clock module includes RX8025 chip and back battery, which provides key time reference for various functions such as billing, event recording, communication, etc. The presence of back battery ensures that the meter can continue to operate in the event of main power interruption or power outage. The communication module includes LTE CAT1 module power management, LTE CAT1 transceiver module, primary SIM card, secondary SIM card, and main antenna RF processing. The primary SIM card is used for primary communication, and the secondary SIM card is used as a backup to ensure reliable communication. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the main structural diagram of the utility model;

[0017] Figure 2 This is the structural diagram of the power management system;

[0018] Figure 3 This is the schematic diagram of the switching power supply module of the present utility model;

[0019] Figure 4This is the principle diagram of the central controller of the electric energy metering module of the utility model;

[0020] Figure 5 This is the principle diagram of the electric energy metering module of the utility model;

[0021] Figure 6 This is the principle diagram of the high-precision real-time clock module of the utility model;

[0022] Figure 7 This is the principle diagram of the central controller of the communication module of the utility model;

[0023] Figure 8 This is the principle diagram of the communication module of this utility model.

[0024] In the figure: 1. Switching power supply module; 2. Electric energy metering module; 3. Dual-core system; 4. High-precision real-time clock module; 5. Communication module; 6. Key module; 7. Storage module; 8. Display module; 9. Output control module. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] As attached Figure 1-Figure 2 : An Internet of Things intelligent three-phase multi-rate electricity meter based on LTE CAT1 communication technology, including a switching power supply module 1, an energy metering module 2, a dual-core system 3, a high-precision real-time clock module 4, a communication module 5, a key module 6 and a storage module 7. The dual-core system 3 is composed of a central controller of the energy metering module 2 and a central controller of the communication module 5, and also includes a display module 8 and an output control module. The communication module 5 is an LTE CAT1 communication module. The central controller of the energy metering module 2 is connected to the energy metering module 2, the storage module 7 and the high-precision real-time clock module 4, and is responsible for energy measurement and local data processing. The central controller of the communication module 5 is connected to the key module 6, the display module 8 and the communication module 5, and is responsible for data transmission and communication management. The display module 8 is an LCD display module.

[0027] refer to Figure 3As shown, the switching power supply module 1UA, UB, UC, and UN realize three-phase power input, RV1, RV2, and RV3 realize surge protection, D4, D9, CX1, CX2, R5, and R6 realize full-wave rectification, C12, C17, C10, and C13 form a filtering processing circuit, and T2 realizes AC-DC conversion. The switching power supply module 1 provides a stable and reliable DC power supply for the entire system.

[0028] refer to Figure 4 As shown, the central controller MCU in the energy metering module 2 uses CH32F203RB. The module calibrates the energy metering chip and reads the energy through PA4, PA5, PA6, and PA7. The module reads and writes to the storage module 7 through PA12 and PA13. The module implements 485 communication through PA9 and PA10. The module communicates with the central controller of the communication module 5 through PB10 and PB11.

[0029] refer to Figure 5 As shown, the electric energy metering module 2 uses the RN8302B metering chip. The module provides a reference frequency through Y1 and associated peripheral circuits. The module implements voltage sampling through UAP, UBP, UCP, UAN, UBN, and UCN. The module implements current sampling through IAP, IBP, ICP, IAN, IBN, and ICN. The module communicates with the metering module central controller through SDI, SDO, SCLK, and SCS_N. The module implements active and reactive pulse output through CF1 and CF2.

[0030] refer to Figure 6 As shown, the high-precision real-time clock module 4 uses the RX8025 clock chip. The module realizes the switching between the mains power supply and the back battery power supply through D1, D5 and related peripheral circuits.

[0031] refer to Figure 7 As shown, the central controller MCU of the communication module 5 uses CH32F203RC. The module implements firmware burning through J7, communicates with the key module 6 through PC1, communicates with the output control module 9 through PA12, PA13, PC8, and PC9, communicates with the communication module 5 through PA4, PA5, PA7, PB10, and PB11, and communicates with the central controller of the electric energy metering module 2 through PA2 and PA3.

[0032] refer to Figure 8As shown, the communication module 5U8 is used as the main SIM card for primary communication, U1 is the secondary SIM card as a backup, Q1, Q19, Q20, Q12, Q9, Q8 and related peripheral circuits realize the switching of the main and secondary SIM cards to ensure reliable communication, Q5, R26, R29, R30 constitute the module power management, and through the level conversion of Q3, Q6, R27, R28, R57, R58, communication with the central controller of the communication module 5 is realized.

[0033] This new LTE CAT1 communication module supports dual-SIM single-standby functionality, allowing the simultaneous use of two SIM cards while only one is active at a time. Intelligent switching ensures the meter remains available during communication. It supports multiple operators and flexible network options, enabling high-speed, stable transmission of power data.

[0034] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed in the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. An Internet of Things intelligent three-phase multi-rate electricity meter based on LTE CAT1 communication technology, comprising a switching power supply module (1), an energy metering module (2), a dual-core system (3), a high-precision real-time clock module (4), a communication module (5), a key module (6) and a storage module (7), characterized in that: The dual-core system (3) includes a central controller of the electric energy metering module (2) and a central controller of the communication module (5), ensuring that the electric energy metering module (2) and the communication module (5) do not interfere with each other; The electric energy metering module (2) includes voltage sampling and current sampling for active energy metering; the high-precision real-time clock module (4) includes a clock chip and a battery; the communication module (5) includes a main SIM card and a secondary SIM card, the main SIM card is used for primary communication, and the secondary SIM card is used as a backup.

2. The IoT intelligent three-phase multi-rate electricity meter based on LTE CAT1 communication technology according to claim 1, characterized in that: The central controller of the electric energy metering module (2) adopts a CH32F203RB chip, and the central controller of the communication module (5) adopts a CH32F203RC chip.

3. The IoT intelligent three-phase multi-rate electricity meter based on LTE CAT1 communication technology according to claim 1, characterized in that: The storage module (7) adopts MB85RC16 storage chip and ZD25WQ80 storage chip.

4. The IoT intelligent three-phase multi-rate electricity meter based on LTE CAT1 communication technology according to claim 1, characterized in that: The clock chip in the high-precision real-time clock module (4) adopts an RX8025T chip.

5. The IoT intelligent three-phase multi-rate electricity meter based on LTE CAT1 communication technology according to claim 1, characterized in that: The electric energy metering module (2) adopts the RN8302B chip.

6. The IoT intelligent three-phase multi-rate electricity meter based on LTE CAT1 communication technology according to claim 1, characterized in that: The communication module (5) includes an LTE CAT1 module power management, an LTE CAT1 transceiver module, a primary SIM card, a secondary SIM card, and a primary antenna radio frequency processing.

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