Constant-temperature crystal oscillator time keeping system and method based on BP neural network

• Main Authors: YAN SUQING, FU QIANG, LIANG WEIBIN, FU WENTAO, LI JINGJING, JIA XIZI, BAI YANG, JI YUANFA, LI LONG, ZHAO SONGKE, SUN XIYAN, HUANG SHENGRONG
• Format: Patent
• Language: Chinese; English
• Published: 07.07.2023
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; ELECTRONIC TIME-PIECES; HOROLOGY; PHYSICS; RADIO-CONTROLLED TIME-PIECES

The invention relates to the technical field of constant-temperature crystal oscillator time keeping algorithms and time synchronization, in particular to a constant-temperature crystal oscillator time keeping system and method based on a BP neural network, and the system comprises a GPS receiver, a constant-temperature crystal oscillator, a time interval measurement module, a processor, an algorithm processing module, a frequency division module, a D/A module, a temperature sensor, a liquid crystal display module and a serial port communication module. The GPS receiver outputs a 1PPS signal; the constant-temperature crystal oscillator is used as an external input clock of the system and inputs 10MHz crystal oscillator frequency to the processor; the time interval measurement module measures the phase difference between the local pulse per second signal and the 1PPS signal; the processor generates a local pulse per second signal and tames the constant-temperature crystal oscillator through the phase differenc