Patent ID: 6608568
Filing Date: 2003-08-19
Classification: B64D,G08B

Abstract:
Warning device for indicating dangerous circumstances, especially for helicopters, having:a transmitter for receiving and processing an operational status signal; a signal comparison means which compares the received operational status signal against predefined criterion; a signal generating means which generates a monitoring signal when said operational status signal meets said criterion and an address signal uniquely identifying said transmitter; a signal transmitting means which wirelessly emits an emitted signal comprising said generated monitoring signal and said address signal; a signal receiving means which receives said emitted signal; a receiver comparison means which analyzes whether said received monitoring signal meets predefined monitoring signal criteria; an output means which emits an output signal when said monitoring signal meets said criteria; whereby said receiving means, said receiver comparison means and said output means are worn by a user and said output signal is immediately perceived by the user; said output means further comprising a memory storing an address comparison signal and an address comparison means which analyses whether the received address signal concurs with the address comparison signal stored in memory; at least one of said address signal and said address comparison signal being variable; signal changing means capable of changing said one of said address signal and said address comparison signal to make said address signal and said address comparison signal identical to one another; said output means only emitting said output signal when the address signal received by said output means and the address comparison signal stored in the memory are identical.