Transducer temperature sensing
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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May 26, 2020
Grant Date -
Aug 9, 2018
app pub date -
Feb 2, 2018
filing date -
Feb 3, 2017
priority date (Note) -
In Force
status (Latency Note)
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Abstract
In described examples, one or more devices include: apparatus including a lens element and a transducer to vibrate the lens element at an operating frequency when operating in an activated state; and controller circuitry. The controller circuitry is arranged to measure an impedance of the apparatus, to determine an estimated temperature of the apparatus in response to the measured impedance, to compare the estimated temperature against a temperature threshold for delineating an operating temperature range of the apparatus, and to toggle an activation state of the transducer in response to comparing the estimated temperature against the temperature threshold.
First Claim
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International Classification(s)
- H03K:PULSE TECHNIQUE
- G01K:MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT;....
- B06B:GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS I....
- G01N:INVESTIGATING OR ANALYSING MATERIALS BY DETERMININ....
- G05B:CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTION....
- G05D:SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC....
- G01R:MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC V....
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