US 12,452,221 B2
Method and system for collecting consumption data measured by smart meters
Henri Teboulle, Bois-Colombes (FR); and Ziv Roter, Bois-Colombes (FR)
Assigned to SAGEMCOM ENERGY & TELECOM SAS, Bois-Colombes (FR)
Filed by SAGEMCOM ENERGY & TELECOM SAS, Bois-Colombes (FR)
Filed on Aug. 15, 2024, as Appl. No. 18/806,184.
Claims priority of application No. 2308748 (FR), filed on Aug. 17, 2023.
Prior Publication US 2025/0063026 A1, Feb. 20, 2025
Int. Cl. H04L 9/40 (2022.01)
CPC H04L 63/0442 (2013.01) 8 Claims
OG exemplary drawing
 
1. A method for collecting consumption data by an information system in an automated management system, the automated management system comprising a data concentrator to which the information system delegates the collection of data and a communication network via which the data concentrator collects consumption data formatted in accordance with a first communication protocol from smart meters of a first type, referred to as primary smart meters, the automated management system further comprising at least one gateway connected to the communication network, each gateway serving as a relay for collecting consumption data formatted in accordance with a second communication protocol from smart meters of a second type, referred to as secondary smart meters, wherein the method includes:
each secondary smart meter transmits its consumption data accompanied by a hashcode derived from said consumption data, in business data formatted in accordance with the second communication protocol and signed using a private asymmetric encryption key;
each gateway relays, to the data concentrator via the communication network, the data signed by a said secondary smart meter while encapsulating them in business data formatted in accordance with the first communication protocol;
the data concentrator relays to the information system the business data formatted in accordance with the first communication protocol that are received via the communication network;
and, when the business data formatted in accordance with the first communication protocol include business data formatted in accordance with the second communication protocol, the information system:
retrieves the signed hashcode from the business data formatted in accordance with the second communication protocol and decrypts the retrieved signed hashcode using an asymmetric public encryption key corresponding to the secondary smart meter from which the consumption data are supposed to be collected,
generates a reference hashcode from the consumption data received in the business data formatted in accordance with the second communication protocol and from information known to the information system,
compares the reference hashcode generated and the hashcode received in the business data formatted in accordance with the second communication protocol, and validates the consumption data received in the business data formatted in accordance with the second communication protocol when the reference hashcode generated and the decrypted signed hashcode match.