Height sensor and vehicular headlight beam axis leveling apparatus
US6234654A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1999 |
| Grant date | May 22, 2001 |
| Priority date | — |
| Expiry date | Apr 27, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q2300/132
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A height sensor has an exciting coil for generating an alternating magnetic field and a pickup coil for detecting the magnetic field. The exciting coil is fixed to a suspension arm and the pickup coil is fixed to a body so as to face each other. Distance between these coils is determined by a voltage outputted from the pickup coil, and a height of the vehicle is calculated from the distance between these coils by taking the mounting position of the pickup coil on the suspension arm into account. The height sensor is readily fixed and a detection accuracy is improved by setting the mounting position of the pickup coil in a range of 1/10 to 1/2 of a length of the suspension arm from a connecting portion between the suspension arm and the body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.