Control module for human-machine dialogue system

A control module for a human-machine dialogue system, said system comprising a plurality of human-machine dialogue members, each human-machine dialogue member comprising a functional element that includes at least one electrical contact and/or a signalling indicator;

• said control module comprising a microcontroller that is designed to be connected to a first power supply source, a common line that is designed to link the microcontroller to all of the functional elements and a plurality of control lines, each designed to link the microcontroller to a functional element of a distinct human-machine dialogue member;
• said control module being configured to operate in a write mode to attribute a state to each signalling indicator of each human-machine dialogue member and in a read mode to read a state of the electrical contact of each human-machine dialogue member;
• said write mode being applied by placing said common line at a first electrical potential and said read mode being applied by placing said common line at a second electrical potential, distinct from the first electrical potential,
• wherein the control module includes:
• for each control line of a human-machine dialogue member, at least one power supply block that is designed to be linked to a second power supply source and connected to said control line of said human-machine dialogue member;
• said microcontroller being configured to activate or to deactivate each power supply block in said write mode by changing the electrical potential assigned to the associated control line;
• said microcontroller being configured to read the state of the electrical contact of each human-machine dialogue member on the associated control line in said read mode.