Piezoelectric coaxial sensor
AssigneeFujikura Ltd.
InventorsSho Ueda, Yuki Tanaka, Masayoshi Omura
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Abstract
A piezoelectric coaxial sensor includes: a center conductor including a conductive wire; a polymer piezoelectric layer covering an outer peripheral surface of the center conductor; a first outer conductor surrounding an outer peripheral surface of the polymer piezoelectric layer; a first jacket layer covering an outer peripheral surface of the first outer conductor; and a second outer conductor surrounding an outer peripheral surface of the first jacket layer. A voltage is generated between the center conductor and the first outer conductor based on induced charges generated in the polymer piezoelectric layer.
Claims8
A piezoelectric coaxial sensor comprising:
- a center conductor comprising a conductive wire;
- a polymer piezoelectric layer covering an outer peripheral surface of the center conductor;
- a first outer conductor surrounding an outer peripheral surface of the polymer piezoelectric layer;
- a first jacket layer covering an outer peripheral surface of the first outer conductor;
- and
- a second outer conductor surrounding an outer peripheral surface of the first jacket layer, wherein
- a voltage is generated between the center conductor and the first outer conductor based on induced charges generated in the polymer piezoelectric layer,
- the second outer conductor is a plurality of conductive wires that surrounds the outer peripheral surface of the first jacket layer, and
- the piezoelectric coaxial sensor further comprises a metal foil layer wound inside or outside the second outer conductor such that the metal foil layer surrounds the outer peripheral surface of the first jacket layer.
A piezoelectric coaxial sensor comprising:
- a center conductor comprising a conductive wire;
- a polymer piezoelectric layer covering an outer peripheral surface of the center conductor;
- a first outer conductor surrounding an outer peripheral surface of the polymer piezoelectric layer;
- a first jacket layer covering an outer peripheral surface of the first outer conductor;
- and
- a second outer conductor surrounding an outer peripheral surface of the first jacket layer, wherein
- a voltage is generated between the center conductor and the first outer conductor based on induced charges generated in the polymer piezoelectric layer,
- the second outer conductor is a plurality of conductive wires that surrounds the outer peripheral surface of the first jacket layer, and
- the piezoelectric coaxial sensor further comprises a metal coated film that:
- is wound inside or outside the second outer conductor such that the metal coated film surrounds an outer peripheral surface of the first jacket layer, and
- comprises a metal film on at least one surface of a tape-shaped film made of a resin.
Dependencies are inferred from the claim text.