Combined communication, security and alarm radio system
First Claim
1. A combined communication, security and alarm radio system for supervising equipment in a plant or installation, said system including:
- (a) a remote control unit;
(b) a base transmitter/receiver in two way voice communication with the remote control unit;
(c) a plurality of portable transmitter/receiver units tuned to the frequency of the base transmitter/receiver to enable direct voice communication between operators through the base transmitter/receiver;
(d) an alarm message unit connected to the remote control unit and also to a telephone exchange landline, for sending out pre-recorded alarm messages in sequence to a plurality of subscribers; and
(e) manually operable means on each portable transmitter/receiver unit for triggering the base transmitter/receiver to activate the alarm message unit, said alarm message unit simultaneously transmitting to the subscribers in sequence the pre-recorded alarm message over the telephone exchange landline and to the portable transmitter/receiver units through the base transmitter/receiver.
1 Assignment
0 Petitions
Accused Products
Abstract
A combined communication, security and alarm radio system for supervising equipment in a plant or installation, in which a base transmitter/receiver (4) is in two way communication with a remote control unit (2). A plurality of portable transmitter/receiver units (12) enables direct communication between operators through the base transmitter/receiver unit (4). An alarm message unit (8) connected to both the control unit (2) and a telephone exchange landline enables pre-recorded messages to be transmitted in sequence to a plurality of subscribers. Each portable transmitter/receiver unit (12) has a push button (27) to activate the alarm message unit (8) through the base transmitter (4) each being recognizable by its own tone. The system also includes a paging transmitter (6) and up to as many paging receivers (14) as there are portable units (12). A plant alarm unit (10) is automatically activated when failure or malfunctioning of equipment occurs or when there is unauthorized entry, this causing the paging transmitter (6) to operate instantaneously and the alarm message unit (8 ) to operate after a predetermined delay.
41 Citations
10 Claims
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1. A combined communication, security and alarm radio system for supervising equipment in a plant or installation, said system including:
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(a) a remote control unit; (b) a base transmitter/receiver in two way voice communication with the remote control unit; (c) a plurality of portable transmitter/receiver units tuned to the frequency of the base transmitter/receiver to enable direct voice communication between operators through the base transmitter/receiver; (d) an alarm message unit connected to the remote control unit and also to a telephone exchange landline, for sending out pre-recorded alarm messages in sequence to a plurality of subscribers; and (e) manually operable means on each portable transmitter/receiver unit for triggering the base transmitter/receiver to activate the alarm message unit, said alarm message unit simultaneously transmitting to the subscribers in sequence the pre-recorded alarm message over the telephone exchange landline and to the portable transmitter/receiver units through the base transmitter/receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification