Relative motion monitor
US4251759A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 8, 1977 |
| Grant date | Feb 17, 1981 |
| Priority date | — |
| Expiry date | Aug 8, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P3/487
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A monitor for detecting the relative velocity between a moving body or surface and a fixed body or surface includes a sensor having an actuator member, such as a wheel having magnetic pole pieces embedded therein and mounted for rotation proportional to the relative velocity between the two bodies or surfaces, and a pick-up member such as a coil or inductor, mounted adjacent the actuator for producing an electrical signal in response thereto. An electric circuit is connected to the pick-up member to receive the electrical signals therefrom and produce a plurality of indication signals in response thereto, including indication signals corresponding to the relative velocity being at or below one or more predetermined levels. The monitor also includes a plurality of indicators connected to the circuit and responsive to the indication signals therefrom, such as lights or audible alarms. In a preferred embodiment, the indicators also include an indicator such as a meter to provide a continuous indication of the proportion which the relative velocity bears to a desired value of the relative velocity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.