3m Innovative Properties Company

Lars Schrix

Ronald David Jesme

Ernesto M Rodriguez, Jr

Jens Weichold

David H Redinger

Vaughn G Amann

David J Badzinski

Anne-Maud B Laprais

Michael H Stalder

Hermanus Franciscus Maria Van Meijl

Tsunehisa Nakamura

Michael Mansholt

Manuel Steinbrink

Joerg Hahn

Ann-Maud B Laprais

Frank Van Meijl

Ernesto M Rodriguez

Holger Kurzhals

Impedance assembly () for use in a voltage divider for sensing an AC elevated voltage of at least 1 kV of a power-carrying conductor () distributing electrical energy in a national grid. The impedance assembly comprises a) a PCB (); b) a high-voltage contact () for connection to the power-carrying conductor; c) a first plurality of impedance elements () on the PCB, connected to the high-voltage contact and in series with each other such as to be operable in a first voltage divider () for sensing the voltage of the power-carrying conductor; and d) a second plurality of impedance elements () on the PCB, connected to the high-voltage contact and in series with each other such as to be operable in a second voltage divider () for harvesting electrical energy from the power-carrying conductor.

Impedance assembly

A data communication apparatus, system, and method are described. The data communication system comprises a transceiver disposed on an entrance port to an enclosure, such as an underground enclosure. The transceiver includes a housing, the housing mountable to the entrance port, wherein the transceiver is configured to communicate with a network outside of the underground enclosure. The data communication system also includes a monitoring device disposed in the underground enclosure that provides data related to a real-time condition within the underground enclosure. The data communication system also includes a sensor analytics unit to process the data from the monitoring device/sensor and generate a processed data signal and to communicate the processed data signal to the transceiver.

Data communication apparatus, system, and method

Data communication appratus, system, and method

Method of performing a challenge-response process, comprising, in this sequence, the steps of a) providing a first challenge-response pair () on a source device (), assigned to a responding device (); b) loading the first challenge-response pair () from the source device () to a challenging device (), while the source device () is operationally connected to the challenging device (); c) performing a challenge-response process between the challenging device () and the responding devices () to which the first challenge-response pair () is assigned, d) loading one or more second challenge-response pairs () from a source device () to the challenging device (), while the source device () is operationally connected to the challenging device (), wherein the step of loading the first challenge-response pair () from the source device () to a challenging device () is performed before the challenging device () has received any information from one of the responding devices (), to which the first challenge-response pair () is assigned.

Challenge-response system for maintenance operations via responder for telecommunications cabinet

Growing community of inventors

Duisburg, Germany

Lars Schrix