Communication method in a system comprising a power supply and communication entity and a home automation actuator

A communication method for a power supply and communication entity comprising two electric terminals making it possible to power a home automation actuator comprising an electric motor driving a moving element in a building, and to communicate with this actuator via two wires,

• the method comprising the following steps:
• generation of a power supply signal between the electric terminals;
• determination of a first time-sequence of a response signal by the actuator, called first calibration sequence;
• assignment of a meaning of representation of a first predetermined calibration information element to the first calibration sequence;
• and
• reception, by the power supply and communication entity, of a data frame that forms at least a part of the response signal, wherein the data frame corresponds to a series of time-sequences of the response signal, representative of a series of information elements that represent variations of the response signal circulating on the two wires, each information element of this series, equal to the calibration information element, being represented by a time-sequence which is an image of the first calibration sequence,
• wherein the data frame establishes a communication protocol for communication between the actuator and the power supply and communication entity.

A home automation actuator, comprising:

• an electric motor driving a moving element in a building;
• two electric terminals making it possible to power the actuator by a power supply and communication entity and allowing the communication between the actuator and the power supply and communication entity via two wires;
• means:
• for analyzing the power supply signal supplied by the power supply and communication entity;
• for generating a first time-sequence of a response signal by the actuator, representative of a predetermined calibration information element, called first calibration sequence;
• and
• for sending, from the actuator to the power supply and communication entity, a data frame that forms at least a part of the response signal, wherein the data frame corresponds to a series of time-sequences of the response signal, representative of a series of information elements that represent variations of the response signal circulating on the two wires, each information element of this series, equal to the calibration information element, being represented by a time-sequence which is an image of the first calibration sequence,
• wherein the data frame sent by the actuator to the power supply and communication entity establishes a communication protocol for communication between the actuator and the power supply and communication entity.

A power supply and communication entity, comprising:

• two electric terminals making it possible to power a home automation actuator comprising an electric motor driving a moving element in a building and to communicate with this actuator via two wires;
• means:
• for generating a power supply signal between the electric terminals;
• for determining a first time-sequence of a response signal generated by the actuator, called first calibration sequence;
• for assigning a meaning of representation of a first predetermined calibration information element to the first calibration sequence;
• and
• for receiving, by the power supply and communication entity, a data frame that forms at least a part of the response signal, wherein the data frame corresponds to a series of time-sequences of the response signal, representative of a series of information elements that represent variations of the response signal circulating on the two wires, each information element of this series, equal to the calibration information element, being represented by a time-sequence which is an image of the first calibration sequence,
• wherein the data frame establishes a communication protocol for communication between the actuator and the power supply and communication entity.