Sensor systems
AssigneeStaplethorne Xtra Sense Limited
InventorsPhilip Elphee Williams, Peter John Jones, Peter Jonathan Hutcheson
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Abstract
A sensor system is provided for use in detecting movement of an item, e.g. a picture 16, suspended from a wall or other substantially vertical structure, or for detecting movement of an item displayed or stored on a horizontal or inclined surface, the sensor system including a piezoceramic element (22) which is mounted on a metallic disc (23) which, in use, is located between the item (16) and the structure or surface, and means for detecting the generation of an output by the piezoceramic element (22) as a result of deflection of the disc (23) in either of two opposite directions as a result of movement of the item (16).
Claims12
A sensor system for use in detecting movement of an item suspended from a wall or other substantially vertical structure, or for detecting movement of an item displayed or stored on a horizontal or inclined surface, the sensor system including a piezoceramic element which is mounted on a plate which, in use, is located between the item and the structure or surface, and means for detecting the generation of an output by the piezoceramic element as a result of deflection of the plate in either of two opposite directions as a result of movement of the item.
A sensor system for detecting movement of an item suspended from a wall or other substantially vertical structure, the sensor system including a piezoceramic element fixed to one side of a plate and a permanent magnet fixed to the other side of the plate.
Dependencies are inferred from the claim text.