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Water Level Monitoring Device

This intelligent device is designed for high-precision, real-time, and remote measurement of water levels in various applications such as tanks, reservoirs, wells, and open channels. It utilizes a Time-of-Flight (ToF) sensor for accurate ranging, coupled with robust data processing logic and GSM technology for cloud-based data transmission.

DescriptionDescription

1. Key Features​

  • High-Accuracy Ranging: Employs the LiDAR sensor for non-contact, time-of-flight based distance measurement, providing superior accuracy compared to traditional ultrasonic or float sensors.
  • Intelligent Data Filtering: Features a sophisticated measurement routine where 10 readings are taken over a 5-minute interval, followed by an averaging process to filter out momentary disturbances (e.g., surface ripples, minor turbulence) for reliable data.
  • Change Detection: Compares the current averaged reading against the last transmitted reading to efficiently detect significant water level changes.
  • Remote Data Transmission: Integrated GSM module enables seamless, wireless transmission of filtered water level data to a remote cloud server.
  • Wide Application Range: Suitable for deployment in diverse environments, including industrial monitoring, environmental studies, and smart agriculture.

2. Operation Flow​

The system operates on a precise, scheduled routine every 5 minutes:

  1. Reading Burst: The microcontroller triggers the LiDAR sensor to take 10 consecutive distance readings from the water surface.

  2. Data Averaging: The 10 readings are processed, and their average value is calculated to minimize noise caused by ripples.

  3. Level Calculation: The averaged distance is subtracted from the known sensor mounting height to determine the water level.

  4. Change Check: The current averaged level is compared against the last transmitted value.

  5. Data Transmission:

    • If the difference exceeds a predefined threshold, the GSM module transmits the new water level to the cloud.

  6. Sleep Mode: The system returns to low-power sleep until the next 5-minute cycle begins.

3. Installation Guidelines​

  • Vertical Alignment: Install the LiDAR sensor perpendicularly (straight down) onto the water surface for maximum accuracy.
  • Stability: Ensure the mounting structure is rigid and free from vibrations that could affect ToF readings.
  • Obstruction-Free Path: Keep the laser path clear of obstacles, mist, or fog that could scatter the laser signal and reduce accuracy.