Tone wheel sensor tester
US7111489B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2004 |
| Grant date | Sep 26, 2006 |
| Priority date | — |
| Expiry date | Dec 10, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D3/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.