Endress+hauser Conducta Gmbh+co. Kg

Endress + Hauser Process Solutions Ag

Ervin Binkert

Stefan Robl

Alexey Malinovskiy

Ulrich Kaiser

Heiko Oehme

Sushil Siddesh

Manfred Niederer

Peter Wazinski

Zurab Khadikov

A method for encrypting data of a field device includes steps of generating data using the field device, encrypting the data by the field device using a non-homomorphic encryption method using a first key, transmitting the non-homomorphically encrypted data to a first instance, and storing the non-homomorphically encrypted data in the first instance. The method also includes retrieving part of the non-homomorphically encrypted data stored in the first instance by a second instance, and decrypting the retrieved, non-homomorphically encrypted data using the second instance the first key. Further, the data is encrypted by the second instance using a homomorphic encryption method using a second key, wherein the homomorphically encrypted data is transmitted to the first instance or to a third instance and stored.

Method for encrypting data of a field device

Disclosed is a method for improving the measuring performance of automation field devices, wherein each of the field devices determines a process variable using a measuring algorithm and is exposed to measurable environmental influences. The method includes capturing the calibration data of the field devices and capturing an item of environmental information of the field devices at defined time intervals; storing the environmental information, the calibration data, and a time stamp in a database; selecting a group of field devices which determine a process variable using the same measuring algorithm and which are exposed to the same environmental influences; correlating the environmental information and calibration data captured over time; creating a mathematical model relating the calibration data and the environmental information; adapting the measuring algorithm on the basis of the model; and transmitting the adapted measuring algorithm to all field devices in the group.

Method for improving the measuring performance of automation field devices

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Möhlin, Switzerland

Ervin Binkert