Apparatus for visually indicating a current travel route of a vehicle
US4484284A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1981 |
| Grant date | Nov 20, 1984 |
| Priority date | — |
| Expiry date | Sep 2, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P1/006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A visual travel route indicating apparatus for use in an automotive vehicle. The apparatus comprises a distance sensor for detecting a current distance of travel of the vehicle, a gas rate sensor for detecting a current azimuthal deviation generated during travel of the vehicle, a closed thermostatic chamber for hermetically enclosing the gas rate sensor such that it is isolated from external temperature fluctuations, and a signal processing unit for arithmetically obtaining a current location or point plotted on two-dimensional coordinates per a given unit travel distance from the outputs of the two sensors. A travel path store is provided for storing the thus-obtained data so as to be read out subsequently for a continuous visual indication of a current path of travel or locus of the vehicle on a display unit for visually indicating a continuous path of travel of the vehicle. A manual operating unit is provided for setting and modifying the visual indication pattern to be displayed on the display unit. The closed thermostatic chamber is positively heated to a desired constant temperature level by a suitable heater so that the gas rate sensor may be protected from a possible tempe…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.