Q.   TAdeo - What is the invention? 

Patent - US8659432 B2The present invention relates to a security system for monitoring persons aboard a vessel using radio frequency identification (RFID), and more particularly, to a security system for automatically detecting and signalling the event of a person falling overboard from a vessel into a body of water. Said security system also provides the exact time and location of the event for facilitating the rescue of said person. 

q.   What makes tadeo the solution for man overboard vs. the ones currently on the market?

Various systems have been developed to detect a person overboard. Most of these systems rely upon the use of a transmitter attached to a person who has fallen overboard to send a signal (ultrasonic waves, radio waves, acoustic signal, or electromagnetic signal) through air or water to a receiver onboard the vessel when said transmitter is immersed in water. The success of these systems depends on producing a signal of sufficient strength that can travel through air or water to reach the receiver on the ship. 

A common deficiency to all the aforementioned systems is that the transmitter, and eventually the "man overboard" alarm system, is triggered upon immersion of the transmitter in water. People on boats, cruise ships or other vessels like to swim in the pool or at the beach. In those circumstances, where no risk of a person overboard exists, the transmitter would be immersed in water and said receivers would recognise such immersion as a person overboard thus causing false alarms.

Another system that has been developed to detect a person overboard relies upon the use of several infrared (IR) sensors which are placed surrounding the hull of a vessel. The IR sensors produce light beams which are detected by another IR sensor. When a person falls overboard, he passes through the sensors breaking the light beam. The light beam interruption triggers an alarm. A deficiency of this system is that objects other than a person overboard (e.g., water or a bird) can pass through the IR sensor, breaking the light beam, and thus activating the alarm. False alarms will cause the crew to react more slowly in the event of a real emergency. Also multiple activations of false alarms would be very unpleasant for the passengers aboard the vessel.

TADEO - The present invention avoids and overcomes these and other problems by providing an automatic detecting and signalling system which is activated when a person, who is wearing a radio frequency identification (RFID) bracelet, falls overboard from a vessel into a body of water; one or more RFID readers which are placed surrounding the hull of the vessel that can detect individually the passage of the RFID tag worn by the person falling overboard through our RFID readers; each RFID reader is connected to a control unit onboard the vessel; the RFID reader transmits to the control unit the information obtained from the RFID tag; the control unit records the exact time and location of the person overboard; and the control unit activates an alarm system for facilitating the rescue of the person overboard.  

Another feature of the present invention is to provide a security system for identification of the passengers onboard a vessel. Such information includes but it is not limited to: passenger's name, passenger's digital photograph, cabin number, dinner table, account number, credit card number, health problems and the number of persons that travel with him.


The system runs in a 12V DC.  It can work with any "set up" digital frequency that suits the need of the vessel. 

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