Wireless surface acoustic wave temperature sensor and interrogation system apparatus capable of generating a self synchronizing shaft position indicator for moving platforms
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United States of America Patent
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Aug 2, 2016
Grant Date -
Jan 14, 2016
app pub date -
Apr 14, 2015
filing date -
Apr 16, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A surface acoustic wave sensor system for use with a moving platform. The system comprises an interrogator for producing an RF interrogating signal transmitted from a first antenna. A substrate that supports surface acoustic waves is attached to the moving platform and an interdigital transducer (IDT) and reflector are mounted on the substrate. The IDT produces surface acoustic waves (SAW) responsive to the RF interrogating signal. The reflector produces reflected SAW responsive to the incident SAW and responsive to a characteristic of the moving platform. A position indicator produces a synchronization signal input to the interrogator for triggering the RF interrogating signal. The synchronization signal is timed to trigger the RF interrogating signal when the interdigital transducer is within a field-of-view of the first antenna.
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International Classification(s)
- G01H:MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC....
- H01L:SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICE....
- G01K:MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT;....
- H04Q:SELECTING
- G01R:MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC V....
- G06K:RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD ....
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