US 12,132,741 B2
System and method for managing data of an automation field device in a secure manner against manipulation
Marc Baret, Kembs (FR); Eric Birgel, Schopfheim (DE); Benedikt Schumann, Weil am Rhein (DE); Simon Merklin, Bahlingen a.K. (DE); and Volker Frey, Schopfheim (DE)
Assigned to Endress+Hauser SE+Co. KG, Maulburg (DE)
Appl. No. 17/753,914
Filed by Endress+Hauser SE+Co. KG, Maulburg (DE)
PCT Filed Aug. 20, 2020, PCT No. PCT/EP2020/073404
§ 371(c)(1), (2) Date Mar. 18, 2022,
PCT Pub. No. WO2021/052708, PCT Pub. Date Mar. 25, 2021.
Claims priority of application No. 10 2019 125 092.7 (DE), filed on Sep. 18, 2019.
Prior Publication US 2022/0417253 A1, Dec. 29, 2022
Int. Cl. G06F 21/00 (2013.01); H04L 9/40 (2022.01); H04L 67/12 (2022.01)
CPC H04L 63/12 (2013.01) [H04L 67/12 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A system for managing data of an automation field device in a secure manner against manipulation, comprising:
a decentralized database comprising a plurality of subscriber nodes comprising validation-capable subscriber nodes;
an automation field device,
wherein the automation field device includes an electronic unit, wherein the electronic unit runs a distributed ledger software stack, and
with a communication interface for establishing a communication connection to the decentralized database via a wireless or wired communication network, wherein the field device generates data comprising measurement values and/or calibration certificates requiring verification,
wherein the field device operates as a light node of the decentralized database after running the distributed ledger software stack and transmits the data to the decentralized database via the communication network and to write them in encrypted form into the decentralized database,
wherein the validation-capable subscriber nodes validates the transmitted data, wherein the decentralized database stores the data when at least a specified proportion of the validation-capable subscriber nodes successfully validates the data, wherein at least one of the subscriber nodes or a device connected to the decentralized database runs an analysis program, wherein the analysis program generates alarm messages on the basis of an analysis of the measurement values of the field device that require verification and are stored in the decentralized database,
wherein the analysis program compares the stored measurement values of the field device requiring verification in the course of the analysis to at least one specified limit value, and
wherein the analysis program generates the alarm message in the case that at least one of the measurement values requiring verification exceeds or falls below the specified limit value.