Time domain delay device measurement apparatus including sensor

Details Time domain delay device measurement apparatus including sensor Time domain delay device measurement apparatus including sensor

1995-11-28

1998-11-03

Oda, Christine K.

Measuring and testing

Vibration

By mechanical waves

73609, G01N 2900

Patent

active

058311670

ABSTRACT:
A sensing apparatus includes a sensor package for generating an output signal responsive to a sensed quantity. The sensor package includes a surface acoustic wave (SAW) sensor and driver driver circuit mounted within a common package to facilitate connection to the associated processing apparatus. More particularly, the SAW sensor has a delay related to a sensed quantity, but generates undesirable reflections responsive to pulses propagating therethrough. The driver is controllable for delivering a series of pulses to the SAW sensor with each pulse having a random phase to thereby reduce effects of the undesired reflections of the SAW sensor. The sensor package also preferably includes connectors carried by the package for facilitating connection of the sensor package to the associated processing apparatus to permit susbstitution or replacement, for example.

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