Incapacitated person alarm and location system - uses miniature radio transmitter and sound transmitter in addition to indication lamps actuated by radio transmitter

摘要

The system is designed to give an alarm and location of an injured person isolated in a building. Each person to be protected in the building carries a radio transmitter which is automatically triggered when wearer is in the horizontal position. The transmitter is fitted with timing and or temporary neutralising and or spontaneous trigger controls. A number of receivers tuned to the transmitter frequency operate winking lamps placed in various parts of the building. With each individual radio transmitter is associated a sound transmitter. Both transmitters are triggered simultaneously so as to permit location by sound in case of faults in the receivers winking lamp circuits.