Household domestic water monitoring device and household domestic water monitoring system including same

A household domestic water monitoring device connected to a faucet and configured to measure a state of domestic water currently in use, the household domestic water monitoring device comprising:

• a faucet fastening part for connection to the faucet;
• a self-power generation unit configured to generate power by self-generating power by a fluid flow of the domestic water, the self-power generation unit supplying the power to the household domestic water monitoring device;
• a pipe part through which the domestic water flows in or flows out, the faucet fastening part being positioned at one end of the pipe part, a discharge part through which the domestic water is discharged being formed at the other end of the pipe part, and the domestic water flowing into the pipe part through the faucet fastening part being discharged from the pipe part through the discharge part via the self-power generation unit;
• a communication unit configured to support low-power short-distance communication and control an operation of the household domestic water monitoring device, the communication unit operating by first receiving the power from the self-power generation unit when the self-power generation unit generates the power;
• a measurement unit configured to measure a water temperature and water quality of the domestic water currently in use;
• a memory configured to store state information on the domestic water measured by the measurement unit;
• and
• a display unit configured to display the state information,
• wherein the communication unit transmits the state information on the domestic water to a user terminal connected through the low-power short-distance communication, and the display unit operates after the communication unit operates first,
• wherein a plurality of through-holes are formed in the faucet fastening part such that the domestic water flowing into the pipe part generates turbulence, and the turbulent domestic water generated through the plurality of through-holes is supplied to the self-power generation unit, and
• wherein a width of the pipe part in an area adjacent to the discharge part is relatively smaller than a width of the pipe part in an area not adjacent to the discharge part such that a laminar flows occurs in the domestic water flowing in the pipe part and thus a flow rate of the domestic water flowing in the pipe part increases.