Master automotive sensor tester
US6204770A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 11, 1998 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Jun 11, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A sensor tester for testing multiple vehicle sensors is provided comprising: a circuit for testing a vehicle piezoelectric knock sensor; a circuit for testing a vehicle speed sensor; and a circuit for testing ignition coils. The circuit for testing piezoelectric knock sensors comprises: an integrated circuit electrically connectable to a power source, the integrated circuit having a multiple step voltage divider, a connector for connecting the integrated circuit to the knock sensor; and a plurality of light emitting diodes electrically connected to the voltage divider of the integrated circuit. The circuit for testing vehicle speed sensors comprises: a voltage divider for limiting the voltage of a power source to a reference voltage; a voltage comparator having a first input, a second input and an output, the first input electrically connected to the voltage divider, the second input electrically connected to the speed sensor; and a voltage transition detector for detecting a voltage transition from the output of the voltage comparator. The circuit for testing ignition coils that have a primary coil and a secondary coil comprises: capacitance means electrically connectable in a loo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.