Data transmission device, data reception device and data transmission system

1. An emitting device configured to emit data, said emitting device comprising:

an oscillator configured for generating at least one carrier wave;

an emitter comprising:

at least one input connected to the oscillator;

an activation input to receive an activation signal; wherein the activation input is configured for receiving a signal representative of data to be transmitted;

at least one output configured to generate a carrier wave modulated by the signal representative of the data to be transmitted, and

a supplemental output;

a communication link connected to the output of the emitter;

a voltage supply source connected to the power line;

at least one power line connected to the communication link at a connection point;

at least one capacitive coupling component connected between the output of the emitter and the connection point, the capacitive coupling component being configured for sending the modulated carrier wave and blocking the transmission of the supply voltage;

a supplemental communication link connected to the supplemental output;

a supplemental power line connected to the supplemental communication link at a supplemental connection point; and

a transformer connected to the power line and the supplemental power line between on one side the voltage supply source and, on the other side the connection point and the supplemental connection point, said transformer configured for blocking the transmission of the modulated carrier wave.

2. The emitting device according to claim 1 comprising at least one supplemental capacitive coupling component connected between the supplemental output of the emitter and the supplemental connection point.

3. The emitting device according to claim 1 , wherein the emitter is configured for generating the modulated carrier wave in a differential mode at the output and at the supplemental output.

4. The emitting device according to claim 1 , further comprising a processing unit having an output configured for generating a signal representative of data to be transmitted, wherein said output is connected to the activation input of the emitter.

5. The emitting device according to claim 1 , further comprising electrical equipment connected to the power line.

6. A system for data and power transmission comprising an emitting device according to claim 1 and a receiving device comprising a receiver comprising an input connected to the communication link, wherein the receiver is configured for receiving a carrier wave modulated by a signal representative of data;

at least one power line connected to the communication link at a connection point; and

at least one capacitive coupling component connected between the input of the receiver and the connection point, wherein said capacitive coupling component is configured for sending the modulated carrier wave and blocking the transmission of the supply voltage.

7. A receiving device configured to receive data, said receiving device comprising:

a receiver comprising:

an input configured for receiving a carrier wave modulated by a signal representative of data; and

a supplemental input;

a communication link connected to the input of the receiver, wherein the communication link is intended to be brought to a supply voltage and to transmit the modulated carrier wave;

at least one power line connected to the communication link at a connection point;

at least one capacitive coupling component connected between the input of the receiver and the connection point, wherein said capacitive coupling component is configured to send the modulated carrier wave and to block the transmission of the supply voltage;

an electrical equipment connected to the power line;

a supplemental communication link connected to the supplemental input;

a supplemental power line connected to the supplemental communication link at a supplemental connection point;

at least one supplemental capacitive coupling component connected between the supplemental input of the receiver and the supplemental connection point, wherein said supplemental capacitive coupling component is configured to send the modulated carrier wave and to block the transmission of the supply voltage; and

a transformer connected to the power line and the supplemental power line, said transformer being connected between on one side, the electrical equipment and on the other side, the connection point and the supplemental connection point, said transformer configured for blocking the transmission of the modulated carrier wave.

8. The receiving device according to claim 7 , further comprising a voltage supply source connected to the power line.