System and method for reducing false positive detection between a human and a moving implement in a power tool
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United States of America Patent
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Jul 11, 2017
Issued Date -
N/A
app pub date -
Mar 14, 2013
filing date -
Sep 28, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A method for detection of false positive condition that an object is in contact with an implement in a power tool includes sampling an electrical signal received from the implement, identifying in-phase and a quadrature components of the sampled electrical signal, identifying a magnitude of each of the samples with reference to the in-phase component and the quadrature component for the samples, detecting an object approaching the implement with reference to the plurality of samples, identifying a signal-to-noise ratio for the samples, and identifying a false positive condition for the detected object with reference to the identified signal-to-noise ratio for the identified samples.
First Claim
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International Classification(s)
- B23Q:DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TO....
- F16P:SAFETY DEVICES IN GENERAL
- H04B:TRANSMISSION
- G01S:RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMI....
- G01R:MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC V....
- B27G:ACCESSORY MACHINES OR APPARATUS; TOOLS
- B23D:PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FI....
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