Invention Grant
- Patent Title: Sensor device
- Patent Title (中): 传感器装置
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Application No.: US310501Application Date: 1989-02-13
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Publication No.: US4884450APublication Date: 1989-12-05
- Inventor: John C. Greenwood , Peter W. Graves , Rosamund C. Neat
- Applicant: John C. Greenwood , Peter W. Graves , Rosamund C. Neat
- Applicant Address: GB2 London
- Assignee: STC PLC
- Current Assignee: STC PLC
- Current Assignee Address: GB2 London
- Priority: GBX8626208 19861103
- Main IPC: G01D5/26
- IPC: G01D5/26 ; G01L1/10 ; G01L1/18 ; G01L9/00 ; G01L11/02
Abstract:
A pressure sensor includes a resonator element (14) mounted on an optical fibre ferrule (11) whereby light signals for maintaining the resonator in a state of oscillation and for returning a modulated signal to a remote station are coupled to the resonator. The resonator is located in an evacuated cavity and is mounted on a flexible diaphragm whereby pressure changes may be detected as changes in the resonant frequency.
Public/Granted literature
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