Single Three Phase AMI Smart Water Meters LoRaWAN Communication Module

LoRaWAN single and three-phase smart meter communication module based on edge computing

• Product Overview

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TW LoRaWAN single and three-phase communication module is based on edge computing. It is an independent installation

of single and three-phase smart meters. The electrical interface is unified, which avoids the secondary development of

LoRaWAN wireless communication module of electric energy meter.

LoRaWAN meter communication module is embedded with LoRaWAN node module with secure encryption transmission

function and high-speed 32-bit microprocessor. It can effectively control the communication module and automatically acquire

various data of the electric energy meter according to its internal upload cycle, reporting task and other operating parameters.

And the data of the electricity meter can be uploaded to the cloud platform on a regular basis. The communication module can

directly replace the PLC module or small wireless module of the current electricity meter. It can realize security control functions

such as encryption/decryption of data at the wireless end of the LoRaWAN network, gateway authentication and network access,

multi-node synchronization and anti-collision.

• Main functions and features​

1. Built-in MCU. Edge computing capability;

2. The communication module has the ability to automatically obtain the unique communication address information of the currently

equipped smart meter after power-on. And realize binding with its own remote communication address;

3. LoRaWAN wireless remote mode can flexibly configure the operation parameters such as task list and upload cycle time required

by the communication module to automatically execute the active upload task;

4. Professional interface data flow automatic control technology. Give priority to the instruction frame issued by the platform gateway

to complete real-time two-way transparent transmission;

5. The standard smart meter communication interface and module box design of the State Grid shall be adopted. Suitable for most

smart meters. It can be replaced directly (powered plug).

6. The configured parameters can be saved when the module is powered down. Automatic recovery when power is restored.

7. Independent power conversion circuit and power enable control circuit. Effectively use DC12V power supply of module interface

and I/O control output of ammeter.

• Main technical parameters​

1. Electrical parameters:

Input voltage: 12V

Current: 400mA;

2. Wireless performance parameters:

Central frequency point: 433MHz/470/923/868MHz (customized project);

Modulation technology: linear frequency modulation spread spectrum modulation;

Bandwidth: 125kHz/250kHz;

RF power:+19dBm (max);

Receiving sensitivity: - 139dBm @ SF12/BW 125KHz;

3. Operating environment:

Temperature: - 20 ℃~+65 ℃;

Humidity: relative humidity ≤ 95%;

4. Data storage: data storage time ≥ 10 years after power failure;

5. Communication interface: standard TTL, 2400bps; 8E1；

• Appearance and antenna installation

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Single-phase smart electricity meter and LoRaWAN communication module assembly diagram

Three-phase smart electricity meter and LoRaWAN communication module assembly diagram