Pressure sensor integrated onto sleeve of solenoid valve
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United States of America Patent
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N/A
Issued Date -
Apr 25, 2002
app pub date -
Jul 18, 2001
filing date -
Jul 18, 2000
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A pressure sensor is integrated upon a solenoid valve by attaching at least one micro-machined strain gauge to an end of the solenoid valve sleeve. The solenoid valve is included in a vehicle brake control system. As the hydraulic fluid pressure in the brake system changes, the end of the solenoid valve sleeve is deflected, causing a change in an electrical property of the strain gauge. The stain gauge is included in a bridge circuit that is electrically connected to a signal conditioning circuit. The signal conditioning circuit generates a pressure signal that is a function of the change in the electrical property of the strain gauge.
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Cited Art Landscape
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