Study and Design a Low-Power Water Meter

At this time, the issue of water scarcity and stress presents a significant and pressing danger to the global population[1]. To conserve water wealth, we must adopt modern controlling and monitoring consumption management techniques. Due to the smart meter, we can automate consumption readings in a distribution network. This work consists of the development of a water meter easy to implement and transmits the volume readings to visualize it in a user interface based on Node-Red. The contribution of this water meter is realizing an intelligent system based on a battery that allows it to prolong its lifespan of it, as long as possible by using a switching circuit between the turbine generator, and the battery that supplies the system in sleep mode. The meter is equipped with a flow detector that wakes up the MCU from sleep mode and also has a flow sensor that allows us to calculate the volume. Through the LoRa module the meter transmits the information to a gateway. To extend the longevity of the battery, we have implemented a circuit that allows seamless switching between the generator and the battery as needed. Additionally, we have incorporated other circuits that effectively disable all system components during sleep mode, minimizing power consumption to the bare minimum. These measures contribute significantly to conserving energy and ensuring optimal battery performance, providing a sustainable and reliable solution for our system.