SMART PRV - PRV.03

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SMART PRV - PRV.03

The MEI pressure monitoring and regulation system is the solution IoT Use microcontroller STM32, specializes in monitoring pressure and flow in water supply networks, and automatically controls pressure regulating valves to maintain stable pressure and reduce water loss. The device supports pressure sensor connection 4–20 mA, flow meter RS485 Modbus RTU and transmit data directly to the platform MEI ECO qua 4G LTE use protocol MQTT. The system operates by Solar energy combined with rechargeable battery, support Continuous Mode, Low Power Mode, Offline Data Logging, automatically synchronize data when there is a network, set alarm thresholds or control according to time frame, send Push Notification, display Dashboard, trend chart and Export Excel report on Web/App.

The MEI pressure monitoring and regulation system is the solution IoT developed on the platform STM32, specialized for monitoring pressure, flow and automatically controlling regulating valves in water supply networks. The device supports pressure sensor connection 4–20 mA and flow meter RS485 Modbus RTU, performs pressure and flow calculations and valve control according to the installation algorithm to maintain stable pressure throughout the network.

The device connects directly to the platform MEI ECO passed 4G LTE use protocol MQTT, without the need for an intermediate Gateway, allowing remote monitoring, control and configuration on the Web/App. The system supports operating by Solar energy combined with rechargeable battery, integrated Continuous Mode and Low Power Mode to optimize energy consumption in locations without grid electricity.

To ensure data integrity, the device integrates Offline Data Logging, automatically save data when connection is lost and synchronize when network is restored. Users can set pressure, flow or control alarm thresholds time frame, receive Push Notification when problems occur, and monitor the Dashboard, trend charts and Export Excel report, effectively meeting the need for pressure monitoring and regulation in modern water supply systems.

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TECHNICAL SPECIFICATIONS

1. General introduction

Equipment due MEI Group development aim Monitor and regulate water supply network pressure in key areas, especially critical points in the network.
Device works completely independent, Connect directly to the server via 4G network, no need for intermediate gateway.
Solution helps Automatic pressure reduction during off-peak hours, prevent pipe breakage, save energy and Sustainable operation thanks to solar energy.

2. Device structure

  • Central controller (MEI Pressure Controller 4G):

    • Microcontroller Industrial STM32/ESP32, integrated modem 4G (SIM7600/A7677S).

    • Communication RS485 Modbus RTU to read data from flow meter (MAG6000, TUF2000, etc.).

    • Entrance 4–20 mA for front-end pressure sensors.

    • Exit 0–10V or 4–20mA to control the electronic damper.

    • Automatically calculate pressure-flow differential to adjust the valve in real time.

    • Warning for pressure, leaks, or stuck valves via MQTT, SMS, or direct call.

  • Power source & operation:

    • Built-in Li-ion battery recharged by solar energy, operating continuously 24/7.

    • Energy saving mechanism: Automatically goes into deep sleep when stable, only turns on the modem when data transmission is needed.

    • Low battery warning, charges itself when there is enough light.

  • Connect & synchronize data:

    • Connect directly to MEI ECO Server via 4G (MQTT/HTTPS).

    • Sends data periodically: pressure, flow, valve status, battery level, alarms.

    • Automatically backup internal data (EEPROM/Flash) when signal is lost, Re-sync when there is a network.

3. Outstanding features

  • Direct 4G connection – no gateway required, flexible deployment to any location.

  • Automatically regulates pressure according to time frame or actual flow rate.

  • Monitoring critical points: Actual data from the low pressure area is sent back to the server to control the valve at the top of the network.

  • Energy saving: DeepSleep mode, operated by Solar power + rechargeable battery.

  • Read flow meter & pressure sensor,disparity calculation and anomaly detection.

  • Smart warnings: when pressure exceeds threshold, connection is lost, battery is low, or leakage occurs.

4. Practical application

  • Water supply network for urban areas, industrial parks, high/low pressure areas.

  • Pressure regulator stations or network endpoints need to monitor flow and pressure.

  • Independent solution for locations far from the center, without grid power.

5. Integrate the MEI ECO ecosystem

Equipment is a part of MEI ECO Platform, including:

  • MEI Pressure Controller 4G (Solar-powered)

  • MEI ECO Server (Cloud + Local)

  • MEI ECO Web/App Dashboard – realtime display, SMS/Call alerts, history storage.

→ Solution Independent pressure regulation – smart – safe, help Prevent broken pipes, optimize pressure and ensure stable water supply network under all conditions.

Technical specifications are subject to change.
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