INTEGRATED SAFETY CONTROL SYSTEM FOR USER'S GAS FACILITY AND GAS LEAKAGE RECOGNIZING METHOD

摘要

An integrated safety control system and a gas leakage recognizing methodenabling the user to easily check the gas leakage for theentire user's gas conduit including a gas meter and to manipulate the gasvalve by remote control through the telephone so that the gasvalve can be automatically cut-off. The system includes a driver unitincluding a first microcomputer (9) for controlling the entire driverunit based on the internal pressure in the gas conduit, an automatic gas cut-off valve unit (3) being driven to open and close the gas valveunder the control of the first microcomputer (9) and a manual power cut-offunit (2) for manually cutting off electric power supplied tothe automatic gas cut-off valve unit (3). The system also includes acontroller unit having a second microcomputer (19) for controlling theentire controller unit in accordance with a signal output from a telephoneconnected to the controller unit via a telephone (10) connectingterminal provided at the controller unit and a signal output from an alarmunit (15 or 16) connected to the controller unit, a pressure displayunit (20) for always displaying the internal pressure of the gas conduit basedon the data from the driver unit and a situation display unit(21) for displaying a gas supply situation of the gas facility under thecontrol of the second microcomputer (19).