Apparatus and method for controlling vehicular wiper
US7772794B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2005 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Aug 16, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/552
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A wiper controlling apparatus capable of discriminating between a signal change at the time of a wiper blade passage and that at the time of a raindrop impact so as to allow a wiper control promptly responding to the change in the condition of the sensing surface is provided. An estimating part (6) includes a displacement status data generating part (61) that calculates displacement status data representing a displacement status of the output signal of the photo-detector respectively based on a plurality of sampling data trains obtained at plural kinds of sampling periods in both of a period in which the wiper is in operation and a period in which the wiper is not in operation, a pattern data storing part (64) that stores in advance respective displacement status pattern data representing a displacement status of the output signal of the photo-detector when a lying object or a contact object is present on the sensing surface and when a wiper blade passes over the sensing surface, and a matching part (62) that compares the displacement status data calculated by the displacement status data generating part (61) with the displacement status pattern data in the pattern data storing par…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.