Measuring and testing – Instrument proving or calibrating – Speed – velocity – or acceleration
Reexamination Certificate
2006-09-26
2006-09-26
Raevis, Robert (Department: 2856)
Measuring and testing
Instrument proving or calibrating
Speed, velocity, or acceleration
Reexamination Certificate
active
07111489
ABSTRACT:
An electrical diagnostic tool for in situ testing of a tone wheel sensor mounted in proximity of a rotatable tone wheel. The tone wheel sensor produces a periodic pulse train signal as the rotatable tone wheel is rotated. The tool has a signal conditioning block for receiving the periodic pulse train signal and generating therefrom a logic-level signal having a frequency. A digital counter has a plurality of outputs and is clocked by the logic-level signal. A plurality of LEDs controlled by the digital counter are used to determine the operational condition of the tone wheel sensor by sequentially illuminating the LEDs at the frequency and in accordance with a counting sequence of the digital counter.
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Arntz Robert T
Deweerdt Thomas E
LeBourdais Ronald A
DaimlerChrysler Corporation
Raevis Robert
Smith Ralph E.
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