Marine Emergency Position Indicating System
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Accused Products
Abstract
A marine emergency position indicating system that can communicate wirelessly between beacon and search engine is provided. When someone carrying the beacon falls into the water, power supply of the beacon opens through drowning automatic switch or manual switch, therefore the beacon can emit wireless SOS signals out. Rescue boat or aircraft installed with search engine can search and receive SOS signals sent from beacons over a 5-kilometer radius along the way to accidental site. The search engine can distinguish the beacons around this area and determine the direction and approximate distance between drowning persons carrying beacons and the search engine through wireless communication technology and wireless positioning technology to help rescuers implement fixed-point rescue. Therefore, the marine emergency position indicating system can overcome the bad weather impact on marine rescue, speed up the rescue process and improve the success possibilities of fixed-point rescue.
6 Citations
20 Claims
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1-10. -10. (canceled)
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11. A marine emergency position indicating system is characterized in that the said system includes the following parts:
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beacon, carried by the marine staff, can send out wireless communication signals after ship wreck;
the said beacon contains power supply circuit, signal process circuit and antenna, which are electrical connected;search engine, mounted in rescue boat or aircraft towards the accident site the said search engine receives wireless communication signals from all neighboring beacons within a certain range and has a signal demodulation module for user identification and conflict detection, and two signal process modules for calculating relative distance and direction of each beacon based on the communication signals; modules within the said search engine indicating the beacon direction contains; direction finding antenna array, which contains multiple antennas according to the design of distribution array, which respectively receive the wireless communication signals matched with the same beacon'"'"'s emitting frequencies; antenna signal process module, which integrates the multi-channel signals from the receiving antennas of the mentioned direction finding antenna array into one channel; mixer amplifier module, which converts the integrated one channel signal output from the mentioned antenna signal process module to a pre-set frequency and amplifiers this signal in the whole signal range to a pre-set amplitude; direction finding data process module, which samples the signals output from the mixer amplifier module on time-division base, recovers the multi-channel signals received from the direction finding antenna array, calculates phase differences of the multi-channel signals and determines the relative direction between the sending beacon and the mentioned search engine. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification