发明名称 |
OPTICAL SPEED SENSING SYSTEM |
摘要 |
An apparatus for determining the rotational speed of an object returning diffuse reflections where no reflective singularity exists on the object or no clearly distinct light pulse is produced. A light source illuminates a target area on the object. An optical system receives the reflected light, selectively filters by wavelength, and focuses the light on a detector for signal processing. The reflected light signals may be a series of complex patterns that repeat once per revolution. A Fourier Transform with additional processing enhancements is performed on the signals and used as a basis to calculate the speed of the object. The signal processing may be automated, resulting in a speed (RPM) solution being displayed for the operator of the device.
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申请公布号 |
US2003137648(A1) |
申请公布日期 |
2003.07.24 |
申请号 |
US20020055473 |
申请日期 |
2002.01.23 |
申请人 |
VAN VOORHIS J. BRENT;ROBINSON JAMES C.;HILLARD JASON E. |
发明人 |
VAN VOORHIS J. BRENT;ROBINSON JAMES C.;HILLARD JASON E. |
分类号 |
G01P3/36;(IPC1-7):G01P3/36 |
主分类号 |
G01P3/36 |
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