Smart Toilet

Smart toilets continue to be a rapidly emerging market, with market share increasing worldwide. This design demonstrates a high-end product with key features such as seat, water, and dry cooling and heating systems, along with a sterilization function, all controlled via a remote. At its core, the RX113 32-bit MCU serves as a single-chip solution for bi-directional human machine interface (HMI) and peripheral device management, while the RL78/G12 sub-MCU provides compact, low-power functionality for the remote control. The design incorporates DC/DC and LDO power supplies for the MCU, motor, and peripheral modules, with a triac for efficient heating control. Additionally, a high-accuracy humidity and temperature sensor ensures excellent environmental monitoring, complemented by a high-performance, ultra-small photocoupler for seamless system integration.

System Benefits:

• Single-chip MCU reduces BOM cost and PCB size.
• Utilizes the low-end MCU for remote design, widely used in various home appliances.
• High-performance DC/DC converters and LDOs for precise power management.
• Incorporates high-accuracy temperature and humidity sensors for precise environmental monitoring.
• Uses a photocoupler for high-performance signal isolation and control.