Remote on-board system for monitoring water or liquid leaks

Thousands of cubic meters of drinking water are lost every day due to pipe leaks, so it is important to regularly monitor the condition of the pipes and quickly determine the intervention areas.

This project uses the audio features of bluetooth to listen the flowing in a liquid pipe (water) and retransmit them on demand to an audio analysis system to determine if a leak is present and how far from the measurement location. The device can be embedded and fixed on the pipe and powered by battery or cell with a long autonomy or electric generator with water flow.

This project should make it possible to produce a device to be permanently installed on a buried water distribution pipe. This device includes a microphone with a programmable high-gain preamplifier, a nrf54 SOC to record and pre-filter then transfer on demand by bluetooth. The noise analysis should make it possible to detect a nearby leak and its distance from the sensor.

This device limits the manual intervention of the verifier and allows a faster remote reading.

This device requires very low consumption and fine processing of the audio signal that the nrf54 SOC can perform.

This device includes a PCB, a long-life battery and a waterproof case made by 3D printing made with the FUSION software in weather-resistant plastic.