EP 0407776 A2 19910116 - Radio telemetry monitoring system.
Title (en)
Radio telemetry monitoring system.
Title (de)
Rundfunk-Telemetrie-Überwachungssystem.
Title (fr)
Système de surveillance à radiotélémétrie.
Publication
Application
Priority
US 37993989 A 19890714
Abstract (en)
A system to monitor an electric fence or a secured area uses radio telemetry to report faults. The radio telemetry transmitter gathers data from a fence charge sensor, battery voltage sensor and/or switch contacts and encodes this information along with a unique address code in a serial data stream that modulates, by frequency shift keying (FSK), a radio frequency (RF) signal. A radio telemetry receiver intercepts the transmitted RF signal and compares the received address code to a preprogrammed unique address code. If code match occurs the received data is transferred to the appropriate displays. Various faults are reported visually and audibly. Fail-safe timers and error detector circuitry in the radio telemetry and transmitter receiver ensure the integrity of the radio telemetry link.
IPC 1-7
IPC 8 full level
G08B 25/10 (2006.01)
CPC (source: EP)
G08B 25/10 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0407776 A2 19910116; EP 0407776 A3 19910918; AU 5755490 A 19910117; BR 9003382 A 19910827; CA 2020228 A1 19910115; ZA 904976 B 19920226
DOCDB simple family (application)
EP 90111713 A 19900621; AU 5755490 A 19900618; BR 9003382 A 19900713; CA 2020228 A 19900629; ZA 904976 A 19900626