Electronic device for a vehicle
US5497143A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1994 |
| Grant date | Mar 5, 1996 |
| Priority date | — |
| Expiry date | Jun 10, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62J50/22
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electronic device for a vehicle detects the number of rotations of a wheel of a vehicle, calculates the distance covered by the vehicle, measures the atmospheric pressure to provide data on the atmospheric pressure, obtains a height corresponding to the measured atmospheric pressure from a height-atmospheric pressure conversion table stored in a RAM on the basis of the measured atmospheric pressure data, calculates an tilt of a road where the vehicle travels on the basis of the height and the measured covered distance, detects a gear corresponding to the calculated tilt from a gear change conversion table, drives a transmission to put the gear in the meshed state. In order to apply a barometer to a weather forecast, an actual height where the vehicle travels is calculated on the basis of data on a tilt of the road measured by an inclinometer attached to the vehicle and the calculated covered distance. A change in the atmospheric pressure due to weather is distinguished from that due to the height to predict weather. The inventive device sets a gear suitable for the road and provides weather prediction, thereby bringing about efficient safe cycling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.