Method and system for collecting consumption data measured by smart meters

An automated management system configured to make a collection of first consumption data by a first information system of the automated management system and of second consumption data by a second information system of the automated management system, the automated management system further comprising a data concentrator to which the first and second information systems respectively delegate the collection of the first and second consumption data, the automated management system further comprising a communication network via which the data concentrator is connected to smart meters of a first type, the automated management system further comprising smart meters of the second type,

• the automated management system being such that each smart meter of the first type, each smart meter of the second type, the data concentrator, the first information system and the second information system comprise electronic circuitry configured so that:
• a pairing is made between each smart meter of the second type and a said smart meter of the first type, so as to serve as relays for collecting consumption data from the smart meter of the second type in question;
• a first secure link is established between each smart meter of the first type and the first information system, the first secure link being such that an asymmetric encryption is established to transmit the first consumption data from the smart meter of the first type in question and the first information system;
• a second secure link is established between each smart meter of a second type and the second information system the second secure link being such that an asymmetric encryption is established to transmit the second consumption data from the smart meter of the second type in question and the second information system using the smart meter of the first type paired as a relay;
• the data concentrator switches consumption data received through the communication network coming from a said smart meter of the first type, either to the first information system or to the second information system, on the secure link to which said received data relate from the first and second secure links.