Method and apparatus for monitoring the tension of an advancing yarn
AssigneeBarmag AG
InventorGerhard Martens
Life of this patent
Estimating the term…
Abstract
The yarn tension at each of a plurality of yarn processing stations is continuously monitored, while continuously determining the mean value of the monitored tension at each station, and while also continuously determining the differential between the monitored value and the mean value. Also, an alarm signal is generated whenever the mean value leaves a predetermined tolerance range, and whenever the differential value leaves a second predetermined tolerance range. An alarm signal may serve to actuate a visual error indicator, or to shut down the associated processing station.
Claims11
A method of monitoring a variable parameter at a work station comprising the steps of
- continuously monitoring the value of the parameter, while continuously determining the mean value of the monitored parameter, and while also continuously determining the differential between the monitored value and the mean value, and
- generating an alarm signal whenever the mean value leaves a predetermined tolerance range, or whenever the differential value leaves a second predetermined tolerance range.
A method of monitoring the tension of an advancing yarn at each of a plurality of monitored yarn processing stations of a yarn processing machine and comprising the steps of
- continuously monitoring the value of the tension of the advancing yarn at each of the yarn processing stations, while continuously determining the mean value of the monitored tension of each of the yarns, and while also continuously determining the differential between the monitored value and the mean value for each of the yarns, and
- generating an alarm signal whenever the mean value for one of the advancing yarns leaves a predetermined tolerance range, or whenever the differential value for one of the advancing yarns leaves a second predetermined tolerance range.
An apparatus for monitoring the tension of an advancing yarn at each of a plurality of monitored yarn processing stations of a yarn processing machine comprising
- sensor means for continuously monitoring the value of the tension of the advancing yarn at each of the yarn processing stations and for producing a continuous output signal representative of the value of the tension of each yarn,
- circuit means operatively connected to the sensor means for continuously determining the mean value of the monitored tension of each of the yarns, and for also continuously determining the differential between the monitored value and the mean value for each of the yarns, and
- means for generating an alarm signal whenever the mean value for one of the advancing yarns leaves a predetermined tolerance range, or whenever the differential value for one of the advancing yarns leaves a second predetermined tolerance range.
Dependencies are inferred from the claim text.