Automatic toilet seats, also known as smart toilet seats, revolve around two main technologies: "sensor control" and "comfort functions." Their sensing systems are primarily divided into three categories: infrared, capacitive, and microwave. Infrared sensing triggers actions such as opening the lid and flushing by detecting human body heat; it has a fast response speed but is easily interfered with by strong light. Capacitive sensing utilizes the conductivity of the human body for identification, offering stronger anti-interference capabilities, and is widely used in high-end models. Microwave sensing detects moving targets using electromagnetic waves and adapts to complex operating environments.
In terms of functionality, the warm water washing function relies on a built-in instant heater or a storage water tank: instant heaters use ceramic heating elements, heating water in 3 seconds with a constant temperature and lower energy consumption, making them the current mainstream technology; storage heaters pre-store hot water in an insulated water tank, offering lower costs but experiencing water temperature fluctuations. The drying function often uses a combination of PTC ceramic heating and a cross-flow fan, with adjustable fan speed and temperature. Some high-end models also incorporate negative ion purification technology to enhance drying comfort. The automatic deodorization function is achieved through an activated carbon filter and a small fan. It automatically activates when a person is detected using the device, quickly absorbing odor molecules.
