Marine personnel monitoring, overboard detection, alert and rescue system
DCFirst Claim
1. A system for detecting and locating overboard personnel of a vessel, comprising:
- a plurality of transmitter units to be worn by monitored personnel, each unit including a signal circuit for transmitting a unique identifier signal to said transmitter unit, each transmitter unit further including a deactivator switch for terminating transmission of said unique identifier signal upon entry of said transmitter into water;
an onboard receiver for receiving and monitoring said unique identifier signal, and for establishing an initial identifier configuration indicative of said transmitter unit identifier signals received by said onboard receiver based upon said monitoring, said receiver configured for detection of any change in said initial identifier configuration, resulting from deactivation of one of said plurality of transmitter units;
an alert device operatively connected to said receiver to alert the crew of said vessel to any detected change; and
said transmitter unit further comprising a selector switch for choosing an alarm status of said transmitter selected from the group consisting of onboard, overboard and combined verification and detection, wherein said selection generating separate automated signals to said receiver for alarm generation.
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Abstract
A system for detecting and locating overboard personnel of a vessel. The system includes a plurality of transmitter units and an onboard receiver. A transmitter is assigned to be worn by each person to be monitored by the system. Each transmitter provides a unique identifier signal to the onboard receiver. The onboard receiver is initialized to establish an initial identifier configuration. The onboard receiver then continuously monitors its reception to detect any change in said initial identifier configuration. The onboard receiver triggers an alert in the event of detection of a change in said initial identifier configuration. In a first embodiment the assigned transmitters are activated prior to establishing the initial identifier configuration and the initial identifier configuration consists of all active transmitter identifiers present. In this first embodiment, the alert condition is initiated upon a failure of receipt of one of the identifiers. In a second embodiment, none of the transmitters are activated until it is submerged, the initial identifier configuration consists of no transmitter identifiers present. In this second embodiment, the alert condition is initiated upon receipt of a transmitter identifier. The system can also include a real time clock to record the time of an alert condition and/or a satellite positioning system to record the location of an alert.
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Citations
18 Claims
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1. A system for detecting and locating overboard personnel of a vessel, comprising:
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a plurality of transmitter units to be worn by monitored personnel, each unit including a signal circuit for transmitting a unique identifier signal to said transmitter unit, each transmitter unit further including a deactivator switch for terminating transmission of said unique identifier signal upon entry of said transmitter into water; an onboard receiver for receiving and monitoring said unique identifier signal, and for establishing an initial identifier configuration indicative of said transmitter unit identifier signals received by said onboard receiver based upon said monitoring, said receiver configured for detection of any change in said initial identifier configuration, resulting from deactivation of one of said plurality of transmitter units; an alert device operatively connected to said receiver to alert the crew of said vessel to any detected change; and said transmitter unit further comprising a selector switch for choosing an alarm status of said transmitter selected from the group consisting of onboard, overboard and combined verification and detection, wherein said selection generating separate automated signals to said receiver for alarm generation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification