Personal ocean security system
First Claim
1. Apparatus for monitoring the security of one or more persons in a waterside environment comprising:
- one or more means for transmitting an individualized signal and adapted to be worn about the body of said one or more persons in a location insuring submergence of said transmitting means upon immersion of a person wearing it in the water;
said transmitting means transmitting said individualized signal in an emission band which is suppressed upon submergence of the transmitting means in the water;
means for receiving and recognizing transmitted, individualized signals, the recognition being of the identity of the originating transmitting means further comprising;
means for generating a master time signal;
means for generating a code signal according to the master time signal;
means for correlating the received transmitted, individualized signal with said code signal providing a correlator output signal upon correlation thereof; and
code receiver means for determining the identity of the individualized signal from among all received transmitted, individualized signals;
means for generating an alarm condition in the absence of reception and recognition of an individualized signal corresponding to one of said one or more transmitting means; and
means for suppressing the alarm condition in the presence a received and recognized signal.
2 Assignments
0 Petitions
Accused Products
Abstract
A system for monitoring the security of one or more persons in a waterside environment and for providing a failure proof indication of when such person falls into the water. The system includes a portable transmitter worn about the body of the person whose security is being monitored in a location which insures its submergence when the person falls into the water. Transmissions from the portable unit, which may be either time shared or the result of an interrogation from a base station, are monitored at a base station. Continuous presence of the transmitted signal from each portable unit inhibits an alarm condition at the base station, but if the transmitted signal is not received, or is not received for a predetermined time period, the alarm condition is activated and the portable unit not transmitting is identified. The lack of a transmitted signal indicates a "man overboard" condition resulting from the transmitter being immersed in the water and transmissions thus blocked. A low battery condition is also transmitted by the portable unit and when received by the base station provides a corresponding identification of the affected portable unit allowing recharging before the battery completely fails. A cradle is provided to hold each portable unit for recharging and to permit synchronization of a timer in the portable unit that controls the transmission timing.
68 Citations
21 Claims
-
1. Apparatus for monitoring the security of one or more persons in a waterside environment comprising:
-
one or more means for transmitting an individualized signal and adapted to be worn about the body of said one or more persons in a location insuring submergence of said transmitting means upon immersion of a person wearing it in the water; said transmitting means transmitting said individualized signal in an emission band which is suppressed upon submergence of the transmitting means in the water; means for receiving and recognizing transmitted, individualized signals, the recognition being of the identity of the originating transmitting means further comprising; means for generating a master time signal; means for generating a code signal according to the master time signal; means for correlating the received transmitted, individualized signal with said code signal providing a correlator output signal upon correlation thereof; and code receiver means for determining the identity of the individualized signal from among all received transmitted, individualized signals; means for generating an alarm condition in the absence of reception and recognition of an individualized signal corresponding to one of said one or more transmitting means; and means for suppressing the alarm condition in the presence a received and recognized signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A method for monitoring the security of one or more persons in a waterside environment comprising:
-
transmitting an individualized signal from said one or more persons from a location thereon insuring submergence of said location upon immersion of said person in the water; transmitting said individualized signal in an emission band which is suppressed upon submergence of said person in the water; receiving and recognizing transmitted, individualized signals, the recognition being of the identity of the originating person, comprising the steps of; generating a master time signal; generating a code signal according to the master time signal; correlating the received transmitted, individualized signal with said code signal and providing a correlator output signal upon correlation thereof; and determining the identity of the individualized signal from among all received transmitted, individualized signals by a code receiver determined according to the timing of the absence of a correlator output signal; generating an alarm condition in the absence of reception and recognition of an individualized signal corresponding to one of said one or more persons; and suppressing the alarm condition in the presence a received and recognized signal. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
-
Specification