Monitoring of the state of health of at least two vibration sensors of a bypass turbomachine

A process for monitoring the state of health of at least two vibration sensors of a bypass turbomachine that comprises a low-pressure body and a high-pressure body, a front vibration sensor that is located at the front of the turbomachine and that measures vibration levels of the low-pressure body and the high-pressure body at the front of the turbomachine, a rear vibration sensor that is located at the rear of the turbomachine and that measures vibration levels of the low-pressure body and the high-pressure body at the rear of the turbomachine, the process being executed in a processing unit of the turbomachine that communicates with the front vibration sensor and with the rear vibration sensor, the process comprising:

• receiving a low-pressure speed and a high-pressure speed of the turbomachine;
• when both the low-pressure speed and the high-pressure speed are simultaneously within respective predetermined ranges,
• determining an average of the vibration levels of the low-pressure body and the vibration levels of the high-pressure body from the front vibration sensor and the rear vibration sensor during a predetermined reception period;
• when both the low-pressure speed and the high-pressure speed are not simultaneously within the respective predetermined ranges, interrupting reception of the vibration levels from the front vibration sensor and the rear vibration sensor such that the vibration levels from the front vibration sensor and the rear vibration sensor are not used in the average during the predetermined reception period;
• and
• determining a state of health of one of the front vibration sensors and the rear vibration sensor based on the average value of the vibration levels during the predetermined reception period.