Resources Contact Us Home
Method and apparatus for detection of edge position thickness or splice position of a material web

Image Number 5 for United States Patent #5583828.

A series of pulses of ultrasonic wave emitted from the transmitter with a specified period are received by the receiver. The received signals are rectified to a smooth wave with a single peak. The occurrence time of the peak is determined to gain and store the peak value, which corresponds to the edge position, thickness or splice position of the web. Alternatively, the transmitter emits a series of pulses of ultrasonic wave with a specified period and the peak value in the signals received by the receiver is once held in the peak-holding circuit. The peak voltage held is discharged and reduced with the discharge device and smoothing of the charged voltage yields its mean value, which corresponds to the edge position, thickness or splice position of the web.

  Recently Added Patents
Highly specialized application protocol for email and SMS and message notification handling and display
Method for generating multi-antenna signals
Embedded bonding pad for image sensors
Masking method and apparatus
Synthesizing VHDL multiple wait FSMS into RT level FSMS by preprocessing
Synchronization of web applications and media
Mobile terminal and controlling method thereof
  Randomly Featured Patents
Integrated pyrolysis gasoline treatment process
Rotor fault and location detector for induction motors
Filter for mounting on an avionic line replaceable unit
Multilayered wiring board and method for fabricating the same
Method of characterizing optical parameters of opto-electronic components and apparatus for carrying out the method, particularly during a coating operation
Method for manufacturing a semiconductor device, stencil mask and method for manufacturing a the same
Single piece construction file hanger
Sensor for acceleration
Information processing apparatus for inputting a signal, and method therefor
Apparatus and method for correcting bar width, bar code reader, and method for decoding bar code