Adjustable-precision time acquisition method based on second pulses
An acquisition method and pulse-per-second technology, which is applied in time-division multiplexing systems, electrical components, multiplexing communications, etc., can solve the problems of inability to adjust accuracy, inconvenient function upgrade and expansion of timing equipment, and inability to flexibly adjust clock accuracy, etc. question
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[0016] The basic principle of the adjustable-accuracy time acquisition method based on the second pulse of the present invention is: the local crystal oscillator provides a clock signal for generating high-precision time, the PPC processor controls the initialization time information and determines the time accuracy, and the FPGA uses the PPS signal to correct the time error.
[0017] figure 1 An architecture diagram showing the method of the present invention. Such as figure 1 As shown, the PPC processor receives the UTC time information sent by the GPS receiver, and obtains the hour, minute, and second data synchronized with the GPS after solving the UTC time information; the PPC processor generates precision information, and obtains The hour, minute, second and second data and accuracy information are transmitted to the FPGA clock acquisition unit; the FPGA clock acquisition unit receives the local clock signal from the local clock source and the PPS signal from the GPS re...
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