Acceleration/deceleration alarm system
US4070562A · kind A · utility
35Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1976 |
| Grant date | Jan 24, 1978 |
| Priority date | — |
| Expiry date | Jun 24, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/171
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for warning the driver of an acceleration or deceleration of a vehicle. A wheel sensor detects wheel rotational speeds N.sub.i and N.sub.i + 1 during two predetermined time intervals T.sub.i and T.sub.i + 1. The absolute value of the difference .vertline.N.sub.i - N.sub.i + 1 .vertline. between the rotational speeds is computed by a computing circuit. Indicating means gives an indication of acceleration when the difference is greater than a predetermined value and when the speed difference is negative, whereas an indication of deceleration is given when the speed difference is positive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.