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Maritime safety system

a safety system and maritime technology, applied in life-saving, waterborne vessels, instruments, etc., can solve problems such as damage to the transmitter unit, and achieve the effect of reducing the likelihood

Inactive Publication Date: 2005-06-02
MOBILARM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0034] In accordance with a third aspect of the present invention, there is provided a transmitter unit for a maritime system, the transmitter unit being arranged to transmit successive signals by wireless communication, each signal being transmitted at a pseudo random offset relative to a predetermined time interval so as to thereby reduce the likelihood during use of signal transmissions from two transmitter units occurring simultaneously.

Problems solved by technology

It will also be apparent that since an alarm is generated when signals from a transmitter unit are not detected, the alarm may indicate that the transmitter unit is damaged or that charging of a battery in the transmitter unit is necessary.

Method used

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Examples

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Embodiment Construction

[0040] Referring to the drawings, in FIG. 1 there is shown a maritime safety system in accordance with an embodiment of the invention during use. The system comprises a base station 10, first, second, third and fourth transmitter units 12,14, 16 and 18 respectively, an alarm device 20 and a positioning means, in this example in the form of a vessel global positioning system (GPS) 22. In the present example, the safety system also includes an emergency position indicating radio beacon (EPIRB) assembly 24 having an EPIRB 26 and an EPIRB releasing device 28.

[0041] During use, the base station 10, the alarm device 20, the vessel positioning means 22 and the EPIRB assembly 24 are disposed on a maritime vessel 30 and each of the transmitter units 12, 14, 16, 18 is secured to or otherwise carried by a crew member 32 of the vessel 30. Each of the transmitter units 12,14,16, 18 is of sufficient power that a signal transmitted by a transmitter unit 12, 14, 16,18 is capable of being received ...

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Abstract

A maritime safety system comprising at least one transmitter unit (12, 14, 16, 18), each transmitter unit being arranged to transmit successive signals by wireless communication at pseudo random intervals and each transmitter unit (12, 14, 16, 18) having an associated transmitter range, a base station (10) arranged to receive said transmitted signals and an alarm device (20). The base station (10) is arranged to cause the alarm device (20) to generate an audible and / or visible alarm when a plurality of successive signals from at least one of the transmitter units (12, 14, 16, 18) are not detected, and the arrangement is such that when a transmitter unit (12, 14, 16, 18) is disposed a distance from the base station (10) which is greater than the transmission range associated with the transmitter unit and a plurality of successive signals are not detected, an audible and / or visible alarm is generated.

Description

CROSS REFERENCE TO RELATED APPLICATION(S) [0001] This application claims priority to Australian Patent Application No. 20044900824, filed Feb. 19, 2004, and Australian Patent Application No. 2003905841, filed Oct. 24, 2003. BACKGROUND OF THE INVENTION [0002] When a member of the crew of a maritime vessel is lost overboard, the time elapsed before an alarm is raised is critical. This is particularly so in cold waters, where the chances of survival of the crew member diminish rapidly with time. However, even in warm waters, prompt recognition that the crew member is no longer on the vessel greatly enhances the chances of locating the crew member in a safe condition. [0003] Existing systems for indicating that a crew member has fallen overboard require the overboard crew member to activate an alarm carried by the crew member, or another crew member on the vessel to activate an alarm disposed on the vessel. [0004] However, both of these arrangements can result in appreciable delay, for ...

Claims

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Application Information

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IPC IPC(8): B63C9/00G08B21/02G08B21/08
CPCB63C9/0005G08B21/088G08B21/0269
Inventor PALLISTER, MARKPALLISTER, VANESSAWARD, DAVID
Owner MOBILARM
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