| 摘要 |
PURPOSE: A device for detecting the water leakage from the water supply and drainage is provided to easily sense the measuring data of underground facilities with a compact design by enlarging a storing capacity of a memory and varying a sensing time conveniently. CONSTITUTION: A DC-DC converter(2) and an A/D(Analog/Digital) converter(4) are respectively connected to a pressures sensor(3) or a flow sensor as a 24V boosting circuit. A power part(1) selectively supplying the power such as AC 220/110V, a solar cell, and a battery is installed to the DC-DC converter(2). An RS-232C(Recommended Standard), a watchdog(6) part, the memory(7), a clock IC(8), an antenna(12), and a wireless module(9) are respectively connected to a one-chip microcomputer(5). The one-chip microcomputer is connected to the A/D converter. |
