Method and system to detect the presence of a broken needle in a needle textile machine

A method to detect the presence of at least one faulty and/or broken needle in a circular or rectilinear textile machine comprising a plurality of needles to which yarns from yarn feed devices associated with that machine are fed,

• feeding each yarn to the textile machine with at least one characteristic thereof, tension, feed speed and quantity fed, being monitored and kept equal to a constant value during the production of a manufactured article or part thereof,
• with provision of monitoring means monitoring said at least one characteristic that is capable of monitoring the value of the at least one characteristic throughout the feeding of the yarn to the textile machine, intended to detect any disturbance in the value of the characteristic monitored, to identify any periodicity in said disturbance and whether the disturbance repeats periodically,
• said monitoring means identifying the presence of a faulty and/or broken needle in the textile machine,
• wherein the tension characteristics of the yarn and feed speed of the yarn are monitored in order to identify a broken and/or faulty needle through the detection of a periodic variation in one of these characteristics of the yarn.