Automatic control system for lighting projector

Details Automatic control system for lighting projector Automatic control system for lighting projector

1993-09-29

1996-08-27

Lazarus, Ira S.

Illumination

Supports

Object sound or sighting controls movable light support

362283, 362276, 342451, F21P 500, G01S 500

Patent

active

055507263

ABSTRACT:
A radio wave signal is transmitted from a radio wave transmitter according to a command from a central control unit, and a supersonic wave is transmitted from a supersonic wave transmitter held by a moving object according to this radio wave signal. A time counter in a supersonic wave detecting device determines the time required from the transmission of the radio wave signal to the detection of the supersonic wave. A coordinate position of the object is calculated on the basis of the thus-obtained time data from a plurality of the supersonic wave detecting devices and positional data of the supersonic wave detecting devices to control the lighting direction of a lighting projector according to a command signal from the central control unit referring to a positional data of the lighting projector. In the case of a plurality of moving objects, supersonic wave transmitters are separately held by the objects, and radio wave signals identified correspondingly to the supersonic wave transmitters are alternately transmitted from the radio wave transmitter. The supersonic wave transmitters detect the radio wave signals identified correspondingly thereto, thereby transmitting respective supersonic waves.

REFERENCES:
patent: 4067015 (1978-01-01), Magarero et al.
patent: 4264978 (1981-04-01), Whidden

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