Smart Toilet Design

Smart toilets continue to be a rapidly emerging market with market share increasing worldwide. Renesas’ system design demonstrates a high-end product with features that include seat cooling, seat heating, water heating, and dry heating system and a sterilization function with all controls accessible via a remote.

The RX113 is a 32-bit microcontroller (MCU) single-chip solution for bidirectional human-machine interface (HMI) and various peripheral devices. The RL78/G12 is ideal for sub-microcontrollers like remote controllers with compact, low power and high function general purpose. This design also features DC/DC and LDO power for the MCU, motor, and other peripheral modules. The TRIAC is used for the heating function. Lastly, the humidity and temperature sensor provides leading accuracy and excellent stability, and the photocoupler provides high performance in an ultra-small package.