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US 10,240,972 B2Granted
Doppler ultrasonic velocity probe
AssigneeLovejoy Controls Corporation
InventorKim A. Lovejoy
Life of this patent
Estimating the term…
Abstract
A system and method for measuring the vibrations of a test object, such as a machine shaft or other rotating equipment. The system includes a probe sensor fitting having an ultrasonic speaker and an ultrasonic microphone. The probe sensor fitting includes a temperature and relative humidity sensor. The system further includes a probe analyzer circuit with a microcomputer that generates vibration analysis data and probe health diagnostics.
Claims20
A system for measuring vibration velocity of a rotating shaft including:
- a probe sensor for measuring vibrations of said rotating shaft, said probe sensor having a housing, said housing including a first cradle opening and a second cradle opening;
- an ultrasonic speaker, said ultrasonic speaker being positioned in said first cradle opening;
- an ultrasonic microphone, said ultrasonic microphone located within said second cradle opening;
- said probe sensor in communication with a probe analyzer circuit;
- said probe analyzer circuit having a vibration analysis data and a probe health diagnostics data;
- said probe health diagnostics data including at least one of a probe signal loss, a carrier frequency loss and a demodulator power loss;
- said probe analyzer circuit having an zero phase probe;
- wherein said zero phase probe generates a once-per-shaft revolution timing signal reference;
- said probe sensor having a humidity compensation sensor;
- said probe analyzer circuit having at least one manual switch, where said at least one manual switch, providing for at least one of a manual assignment of a direction of said shaft revolution and a manual input of at least one of a serial network drop code, a transceiver drop code, and an installation phase angle;
- and
- wherein said probe sensor and said probe analyzer circuit are measuring said vibration velocity of said rotating shaft.
9 more elements
A method for measuring the vibration velocity of a rotating shaft including the steps of:
- providing a probe sensor for measuring vibrations of said rotating shaft, said probe sensor having a housing, said housing including a first cradle opening and a second cradle opening;
- providing an ultrasonic speaker, said ultrasonic speaker being positioned in said first cradle opening;
- providing an ultrasonic microphone, said ultrasonic microphone located within said second cradle opening;
- providing a temperature and humidity compensation sensor;
- transmitting an ultrasonic signal from said ultrasonic speaker toward said rotating shaft;
- reflecting said ultrasonic signal from said rotating shaft as a reflected ultrasonic signal to said ultrasonic microphone;
- transmitting said reflected ultrasonic signal to a probe analyzer circuit;
- said probe analyzer circuit performing a vibration analysis and a probe health diagnostics;
- transmitting said vibration analysis and said probe health diagnostics via a serial communications network, wherein said probe analyzer circuit provides said probe health diagnostics prior to said vibration analysis;
- said probe analyzer circuit providing for a zero phase probe;
- wherein said zero phase probe generating a once-per-shaft revolution timing signal reference;
- providing for a manual configuration of a microcomputer, wherein said manual configuration provides for at least one of a manual assignment of a direction of said shaft revolution and manual input of at least one of a serial network drop code, a transceiver drop code, and an installation phase angle;
- and
- wherein said probe sensor and said probe analyzer circuit are measuring said vibration velocity of said rotating shaft.
11 more elements
Dependencies are inferred from the claim text.