发明名称 Method of and arrangement for producing numerical values proportional to the frequency of measured pulses of a measured pulse train
摘要 A method and a device for the generation of numerical values which are proportional to the frequency of the measured pulses of a measured-pulse train are proposed which make available the numerical values covering a wide measuring range with high precision and in a shortest possible time. To this end, in invariably predetermined reference time intervals, the number of the periods of the measured pulses is in each case measured as an approximate value for the frequency, and a correction value is added to the approximate value. The correction values are contained in at least one table as table values under respective addresses, the table values being derived from the difference between the time durations measured in successive reference time intervals up to the respective last measured pulse in the reference time interval. The table values are proportional to the reciprocal value of the total of the reference time interval and the difference between the time durations measured in the successive reference time intervals up to the respective last pulse in the interval.
申请公布号 US4581713(A) 申请公布日期 1986.04.08
申请号 US19830480209 申请日期 1983.03.30
申请人 ITT INDUSTRIES, INC. 发明人 FENNEL, HELMUT
分类号 G01P3/489;G01R23/10;(IPC1-7):G01P21/00 主分类号 G01P3/489
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