Redundant and dissimilar system for monitoring the status of control contactors of an aircraft control stick

A redundant and dissimilar monitoring system for monitoring the state of control contactors, said redundant and dissimilar monitoring system comprising:

• at least one electric power source generating electricity at a power supply voltage VA;
• at least one calculator;
• a plurality of control contactors, each control contactor having a plurality of switches that are operated simultaneously;
• and
• at least two monitor circuits for monitoring the states of said switches of said control contactors, each switch of a control contactor being integrated in a respective monitor circuit, each monitor circuit being connected to at least one electric power source and to at least one calculator, each monitor circuit comprising:
• an electronic unit having a tail receiver and at least two control receivers connected in series with one another, each control receiver being provided with two respective primary terminals;
• and
• at least two switches provided respectively with two secondary terminals, a first secondary terminal of a switch being electrically connected to a first primary terminal of a control receiver, and each switch being connected in parallel with at least one control receiver in such a manner as to short-circuit said at least one control receiver when said switch is in the closed state, the number of said switches being equal to the number of said control receivers;
• the redundant and dissimilar monitoring system being characterized in that each calculator is configured to measure at least one electrical characteristic of said electronic unit and to determine the states of said switches and of said control contactors.