Nano pulse signal acquiring method
A pulse signal and acquisition method technology, applied in the field of new nanoscale pulse signal acquisition, can solve the problems of circuit board wiring, impossibility, large amount of data processing, etc., and achieve the effect of ensuring real-time and synchronization
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[0035] In a certain test equipment, it is necessary to collect the pulse signal of the inertial group and the pulse signal of the grating ruler. Due to the high collection accuracy required, this collection method is specially adopted.
[0036] In the hardware facilities of the acquisition system, a differential conversion chip with a maximum input frequency of 52MHz is used to receive the signals of the grating ruler and the inertial group, ensuring that it can guarantee the complete grating ruler pulse signal and the inertial group pulse signal input to the greatest extent. The pulse signal that has passed the differential conversion chip is connected to the FPGA as the pulse to be tested. The high-precision 192MHz timing clock and 2K sampling clock are generated inside the FPGA, and registers are generated inside the FPGA to record the reference timing of t1, t2, t4, and t5 respectively. The number of clocks and the value of the register are continuously read and calculated wit...
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