Marine personnel monitoring, overboard detection, alert and rescue system
US6057759A · kind A · utility
Inventor
Key dates
| Filing date | Feb 16, 1999 |
| Grant date | May 2, 2000 |
| Priority date | — |
| Expiry date | Feb 16, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B21/0227
- WIPO fieldControl
- WIPO sectorInstruments
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 u…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.