Process for the non-contacting detection of eddy current-induced bodies, particularly metal objects, as well as to sensors based on the process
US4843259A · kind A · utility
42Cited by
3References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 26, 1987 |
| Grant date | Jun 27, 1989 |
| Priority date | — |
| Expiry date | Oct 26, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/9537
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The process for the detection of an eddy current-induced body in the action range of an inductive resonant circuit component (L) uses in place of a continuous operation and detection of the current change, a network containing a resonant circuit (L,C) is briefly excited with an electric function and the system response of the network is evaluated. The proximity sensor is constituted by an oscillatable network (L,C) operated on the input side with a function generator and, on the output side, the system response is investigated with an evaluation circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.