Apparatus for the evaluation of yarn qualities
AssigneeAsahi Kasei Kogyo Kabushiki Kaisha
InventorsMasatake Akagawa, Tsutomu Tamura
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Abstract
The invention resides in an improved apparatus for the evaluation of qualities of a running continuous yarn. The apparatus is provided with a capacitive sensor through which the yarn is passed continuously. The apparatus is also provided with a device for extracting from the sensor an output signal with amplitude or frequency components frequency distribution. It is further provided with an electronic calculating device which determines the mean and standard deviation from the foregoing distributory information.
Claims4
An apparatus for evaluating the characteristics of a continuous yarn, said apparatus comprising:
- a. sensor means for sensing a property of the yarn and for producing a first signal in response thereto;
- b. first circuit means coupled to said sensor means for receiving said first signal and for producing a second signal which is a function of the amplitude component frequency distribution of said first signal;
- c. second circuit means coupled to said sensor means for receiving said first signal and for producing a third signal which is a function of the frequency component frequency distribution of said first signal;
- and
- d. calculating means coupled to said first and second circuit means for receiving said second and third signals and for calculating the mean value and standard deviation of each of said signals.
Dependencies are inferred from the claim text.