Method for adjusting the sensor sensitivity of a motion sensor for detecting movement of a pile yarn in a tufting machine and adjusting system

An adjusting system for adjusting the sensor sensitivity of a motion sensor for detecting movement of a pile yarn in a tufting machine, provided with several tufting needles, wherein this pile yarn is incorporated into a fabric, wherein this adjusting system comprises:

• a data unit for reading in current process data;
• a storage unit for storing reference data for the sensor sensitivity of the motion sensor consisting of one or more sets, wherein each set comprises a value of a reference sensor sensitivity and corresponding process data;
• and
• a calculation unit for:
• determining a connection between the current process data and the process data of the provided reference data;
• determining a value for the sensor sensitivity to be adjusted on the basis of this connection and the one or more values of the reference sensor sensitivity of the provided reference data;
• wherein the adjusting system is provided for adjusting the value for the sensor sensitivity to be adjusted in the motion sensor.