Emergency lighting system

Details Emergency lighting system Emergency lighting system

2007-07-25

2010-12-07

Nguyen, Tu X (Department: 2618)

Telecommunications

Carrier wave repeater or relay system

Portable or mobile repeater

C455S404100

Reexamination Certificate

active

07848702

ABSTRACT:
An emergency system for providing an emergency function is described in which the system is required to provide an autonomous and self-diagnostic capability so the system can be tested when not in operation in an emergency situation. A plurality of emergency devices14are provided which have transmitters and receivers for producing a mesh network (FIG.1). Each device14has a processor60for establishing a preferred wireless communication link of the mesh network to another device14for relaying signals and messages. The devices14are arranged in subnets50and the subnets are also grouped into groups of devices14which may cross various subnets50so that only one group of devices14can be tested at a particular time.

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