Process for the non-contacting detection of eddy current-induced

Details Process for the non-contacting detection of eddy current-induced Process for the non-contacting detection of eddy current-induced

1987-10-26

1989-06-27

Miller, Stanley D.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307309, 307580, 307227, 328 5, 331 65, 324207, 324234, H03K 1790, H03K 17687, G01N 2700, G01B 714

Patent

active

048432598

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.

REFERENCES:
patent: 3350660 (1967-10-01), Engdahl et al.
patent: 3509469 (1970-04-01), Strange
patent: 4719362 (1988-01-01), Nest et al.
Sensenbaugh, "Proximity Detector", IBM Technical Disclosure Bulletin, vol. 13, No. 18, Jan. 1971, pp. 2230-2231.

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