Abstract: A dual faucet with a sterile water and general water supply function includes a faucet body including a body portion, a sterile water outlet faucet connected to the body portion and through which sterile water comes, and a regular water outlet faucet connected to the body portion near the sterile water outlet faucet and through which raw water supplied from a raw water pipe line comes, and a sterile water supply unit including a casing, and an electrolytic bath module disposed in the casing and configured to produce sterile water by electrolysis of the raw water supplied from the raw water pipe line and supply the produced sterile water to the sterile water outlet faucet, wherein the operation of the electrolytic bath module is controlled to adjust an ion concentration of the sterile water according to a measured internal voltage value or a measured internal current value.

Abstract: A bathroom system for vitamin D synthesis includes an environmental information collection unit which collects external environment information regarding the outdoors, a user information collection unit which collects user activity information about a user's outdoor activities, a data analysis unit which analyzes the external environment information and the user activity information to derive the user's predicted amount of vitamin D synthesis, and compares the predicted amount of vitamin D synthesis with a preset reference recommended amount of vitamin D, to derive an additional amount of vitamin D synthesis, a light source for vitamin synthesis provided in a bathroom facility to irradiate light for synthesis of vitamin D in the user's body, and a light source control unit which controls the light source for vitamin synthesis according to the additional amount of vitamin D synthesis, which has been derived from the data analysis unit.

Abstract: A vitamin D synthesis and sterilization control device according to an embodiment may include a first light source configured to irradiate light for synthesizing vitamin D in the body of a user, a second light source configured to irradiate light for sterilizing a bathroom, a first sterilizing water discharging unit configured to discharge a low-concentration sterilizing water for washing the user, a second sterilizing water discharging unit configured to discharge a high-concentration sterilizing water for cleaning the bathroom, a sensor unit configured to detect whether the user is in the bathroom, and a control unit configured to generate an operation command for controlling at least one of the first light source, the second light source, the first sterilizing water discharging unit and the second sterilizing water discharging unit to operate based on the detection result on whether the user is in the bathroom.