发明名称 METHOD AND DEVICE FOR TRANSFERRING A MEASUREMENT SIGNAL FROMA REVOLVING ROLL USED IN A PAPER MAKING MACHINE
摘要 A method and device for transferring a measurement signal from a revolving roll used in a paper making machine, in which detectors are arranged in the transverse direction of the roll, preferably uniformly spaced. Measurement signals generated by the detectors are passed to a measurement signal reading unit for reading the measurement of the detectors which is installed preferably at the end of the roll. From the measurement signal reading unit, the signals are transmitted wirelessly further as telemeter signals to a reading unit which is placed outside the roll and connected to a PC or equivalent computer. In the measurement signal reading unit for reading the measurement of the detectors, a transponder is arranged into which an unique code is coded for each detector. The signals are processed in the entire measurement process as analog signals. In the transfer of the telemeter signals between the unit for reading and measurement of the detectors and the reading unit placed outside the roll, a substantially low transfer frequency of an order of from about 100 kHz to about 150 kHz is employed. 19
申请公布号 CA2119323(A1) 申请公布日期 1994.09.18
申请号 CA19942119323 申请日期 1994.03.17
申请人 VALMET PAPER MACHINERY INC. 发明人 ALLONEN, HARRI
分类号 G01L5/00;(IPC1-7):D21F3/06;H04B7/00;D21G1/02;G01S13/74;G01S13/76 主分类号 G01L5/00
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