Renesas offers solutions for gas and water meters that accurately measure the flow, monitor various sensors and provide long-term, stable operation.
Flow meters require the usage measurement, display its result, a monitoring function that uses information from various sensors for a safe supply, a function for data communication with external devices, and they require low power consumption and high reliability to stably operate for the long-term.
To support these requirements, Renesas offers a lineup of RL78/L1x microcontrollers (MCUs) that support three LCD drive voltage generation methods. In addition to the LCD display function, Renesas has a lineup of RL78/H1D equipped with a UART that can communicate up to 19200bps with subsystem clock (38.4kHz), and sampling output timer/detector function that is suitable for rotation detection by MR sensor. For communication unit solutions, Renesas offers ultra-low power Sub-GHz RF driver equipped products to support IEEE 802.15.4g/4e, which is essential for Wi-SUN applications.
Browse Renesas block diagrams for flow meters applications to see how our devices could be used in your next project.
Renesas' RL78/H1D and RL78/L1x Series MCUs achieve operation with ultra-low power consumption and improve the fail-safe function of the microcontroller by equipping a highly reliable watchdog timer (WDT) and a built-in oscillator circuit which make it less prone to abnormal oscillations, making it suitable for gas meter usage that requires stable operation with a high level of reliability.
Renesas’ RL78/L1x MCUs can operate across a wide range of voltages and achieve ultra-low power consumption in the standby state. In addition, Renesas provides various packages lineup which meet your requirement. Also, RL78/H1D makes customers easier to build a system by equipping a timer supporting magnetoresistive (MR) sensor for rotation detection.