Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Mechanical measurement system
Reexamination Certificate
2006-04-18
2006-04-18
Nghiem, Michael (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Mechanical measurement system
C073S504120, C073S504160, C702S141000, C702S146000
Reexamination Certificate
active
07031852
ABSTRACT:
An acceleration sensor, installed together with an angular velocity sensor in the same casing, detects the acceleration induced by the external vibration. Its detection signal Vs is supplied to first and second band-pass filters to extract a driving system resonance frequency fd of the angular velocity sensor as well as a difference frequency Δf between the driving system frequency component and a sensing system resonance frequency. The extracted signals Vs1and Vs2of respective frequency components are supplied to first and second window comparators. When each frequency component deviates from a predetermined range, a diagnostic signal Vd notifying the abnormal condition of the angular velocity sensor is produced.
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Le John
Nghiem Michael
Posz Law Goup, PLC
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