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1. (WO2016055056) METHOD FOR MONITORING THE STATE OF A CONTACT SURFACE OF A PLUG CONTACT

Pub. No.:    WO/2016/055056    International Application No.:    PCT/DE2015/100417
Publication Date: Fri Apr 15 01:59:59 CEST 2016 International Filing Date: Fri Oct 09 01:59:59 CEST 2015
IPC: H01R 13/03
H01H 1/027
H01B 1/24
Applicants: HARTING AG & CO. KG
Inventors: DAMSCH, Stefanie
TRÖGER, Lutz
Title: METHOD FOR MONITORING THE STATE OF A CONTACT SURFACE OF A PLUG CONTACT
Abstract:
In prior art, it is impossible to continuously monitor the state of a contact surface coating of individual contacts. The aim of the invention is to enable said type of continuous state monitoring of the contact surface coating as simply as possible. Said aim is achieved in that sensors (4, 4', 4'') are introduced into a contact surface coating (2) which is applied to a contact base material (1). The sensors (4, 4', 4'') are in particular nanostructures, the conductance thereof being significantly higher than the conductance of the contact surface coating (2). If the contact surface coating (2) is removed by wear and tear, for example due to the counter contact of a tongue (3), then at least some sensors (4, 4', 4'') are destroyed. The results of a corresponding conductivity measurement by means of the measurement device (5) provides a significant statistical indication on the state of the contact surface coating (2).