Turbomachine comprising a monitoring system comprising a module for engaging a protection function of the turbomachine and monitoring method

A method for monitoring an aircraft turbine engine including at least one spool rotating at speed N1, said method comprising:

• obtaining a first measurement of speed of the rotating spool according to a first regulation measurement channel of a monitoring system of the speed N1 and at least a second measurement of the speed of the rotating spool according to a second regulation measurement channel of said monitoring system, independent of the first measurement channel;
• comparing the measurement of speed obtained with a thrust setpoint to supply a thrust status;
• obtaining a first overspeed of the rotating spool according to a first overspeed detection channel of a system for protection against overspeed configured to prevent ejection of high-energy debris outside said turbine engine, and a second overspeed of the rotating spool of the turbine engine according to a second overspeed detection channel of the same protection system, independent of the first overspeed detection channel;
• engaging an anti-overthrust or anti-loss of thrust protection function of the turbine engine using the two overspeed values obtained to compare the overspeed measurement with at least one reference speed defined according to the protection function to be engaged.

A method for monitoring an aircraft turbine engine including at least one spool rotating at speed N1, said method comprising:

• obtaining a first measurement of speed of the rotating spool according to a first regulation measurement channel of a monitoring system of the speed N1 and at least a second measurement of the speed of the rotating spool according to a second regulation measurement channel of said monitoring system, independent of the first measurement channel;
• comparing the speed measurements obtained with a thrust setpoint to supply a thrust status;
• obtaining an overspeed of the rotating spool according to at least a first overspeed measurement channel, independent of the regulation measurement channels, of a system of protection against overspeed configured to prevent ejection of high-energy debris outside said turbine engine;
• and
• engaging an anti-overthrust or anti-loss of thrust protection function of the turbine engine by comparison of said overspeed obtained with at least one reference speed defined according to the protection function to be engaged.