Position measurement time space parameter through switching clock
A technology for exchanging positions and clocks, which is applied to the measurement of electrical unknown time intervals, devices for measuring time intervals, clocks, etc. , can not measure the time change and other problems, to achieve the effect of easy implementation, simple structure, improved measurement accuracy and speed
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[0009] figure 1 is the schematic block diagram of the rotary rod, in figure 1 In the above, the clocks (1, 2) are respectively installed at both ends of the rotary rod, and their frequency signals are transmitted to the mixer (F) through the conductive line, and the difference frequency output of F passes through a low-pass filter (L) to obtain a The low-frequency AC signal is a square wave signal obtained by the voltage comparator (E), and the data port of the parallel latch (C) is a parallel addition counter with a main frequency of fc. When the falling edge signal of the E square wave reaches C, C immediately Lock the counting data, notify and present it on the data processor (CPU) port, the CPU reads the port data and subtracts the last data from the data obtained this time to get the net pulse width data of this square wave, and the width data is marked as :Dat
[0010] figure 2 is the overall structure diagram of the device, in figure 2 Among them, the beat frequen...
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