G - Physics – 08 – B
Patent
G - Physics
08
B
340/105
G08B 23/00 (2006.01)
Patent
CA 1062794
-1- SUPERVISORY CONTROL SYSTEM Abstract of the Disclosure A supervisory control and self-powered indicating system is provided for controlling the operation of a remote electrically operated device from a control station and for indicating at the control station either the operability of the remote device or the absence of an alarm condition. in which a pair of face-to-face diodes are connected in series across the transmission lines at the remote location, with the mid-point between the diodes connected through a third diode and through a condition responsive switch to earth ground, The return connection through earth ground at the control station is made through a relay coil and back-to-back diodes connected in series across the transmission lines at the control station. Telemetry is provided through the opening and closing of the condition responsive switch, with the time that this switch remains in a given condition being monitored by the length of time the switch associated with the relay coil at the control station remains in this given condition. Alternatively, the condition responsive switch changes state in response to a predetermined alarm condition which is indicated by a change of state of the switch associated with the relay at the control station.
233889
LandOfFree
Supervisory control system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Supervisory control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Supervisory control system will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-884830