Remote control and power system
AssigneeBookham Technology PLC
InventorsGiles Humpston, Anthony Patrick Needham, Anthony John Salloway
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Abstract
A remote device such as a control value (4) is powered and controlled by optical energy, supplied by an intensity-modulated light source (8) and optical fibre (10). After conversion into electrical form, the light is detected at (12) and applied to a piezoelectric transformer (14). The output of the transformer powers and control an actuator (16) of the control value.
Claims8
A system for controlling and providing electrical power to an electrical device at a remote point comprising:
- a light source-operable to produce an intensity modulated optical signal in response to a control signal, an optical fibre for guiding said optical signal to a photodetector located at said remote point, said photodetector being operable to produce an electrical signal in response to said optical signal and a piezoelectric transformer connected to said photodetector for converting said electrical signal into a higher voltage second electrical signal for controlling and providing power to the electrical device.
A system according to any preceding claim in which the light source comprises a solid state laser.
A system for controlling and providing electrical power to an electrical device at a remote point substantially as hereinbefore described with reference to or substantially as illustrated in the accompanying drawing.
Dependencies are inferred from the claim text.