Water meters, like most systems, are seeing advancements in measurement and precision. One key driver for this change is the metrology methodology transitioning from mechanical-based to electronic sensors, such as hall-sensors or ultra-sound. Another introduction is automatic meter reading (AMR) technology, integrating in LoRa, Bluetooth® Low Energy (BLE), NB-IoT, and other communication standards.

Renesas has developed a solution based on a tunnel magneto resistance (TMR) sensor, which enables lower power consumption and extends battery life to 5-7 years (as required in the market).

System Benefits

  • Ultra-low power consumption, as a result of TMR and RL78/H1D’s ability to directly drive sensors without CPU wakeup
  • Electronic design, eliminating mechanical metering and improving reliability
  • Ability to integrate additional control functionality and monitoring
System Block Diagram

Winning Combinations

Renesas’ complementary product portfolios of Analog + Power + Embedded Processing work together to deliver comprehensive solutions to our customers. Our product experts have developed "Winning Combinations," compelling product combinations that help our customers accelerate their designs and get to market faster.

See the benefits immediately with our “Winning Combinations” solutions