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Introduction to LoRa wireless remote transmission system:

LoRa technology is an ultra-long-distance, low-power data transmission technology based on 1GHz or less released by Semtech, USA. LoRa technology is applied to remote meter reading of water meters. The first-level meter reading distance between the concentrator and the water meter is about 1km. Through a maximum of 5-level relay routing, the maximum meter reading distance is about 5km. The system follows the data transmission management mode of the three-level architecture and two-level transmission of the online remote meter reading system. The system can monitor the water volume data, valve status, abnormal alarm and other meter status of the terminal meter in real time online.

Principle of automatic meter reading:

1. The data concentrator is set to store data (generally set to 00:00:00). At this time point, the data concentrator automatically freezes, reads and saves the meter status data such as the cumulative reading, valve status, battery voltage, etc. of the water meter.

2. The system software reads the data regularly, reads and saves the frozen data stored in the data concentrator to the database of the upstream server through the secondary network (Ethernet or GPRS), and finally displays it in the application through software analysis.

Advantages:

1. Online monitoring of water volume data and water meter status.

2. Built-in valves can be used to achieve remote control functions.

3. No wiring is required, easy to install, and not susceptible to lightning strikes.

4. Automatic networking and automatic meter reading are possible, data transmission is stable, and the failure of a single node does not affect the reading of water meter data in the entire meter reading network.

5. Easy debugging