Recently, our company has producedThe Beidou GPS redundant time synchronization system has been successfully put into operation in the Huining Tao River Diversion Project in Gansu Province

Produced by Shanghai Ruicheng Electric Co., LtdBeidouGPSRedundant time synchronization systemSelect a dual constant temperature slot high stability crystal oscillator with low phase noise and low driftDOCXOHigh precision timing typeGPSBeidou timing board,By using frequency measurement and control technology, the output frequency of the crystal oscillator is precisely measured and calibrated to ensure stabilityGPSThe output frequency of the Beidou tamed crystal oscillator is accurately synchronized inGPSOn the Beidou system, the accuracy is better than1E-12.

BeidouGPSRedundant time synchronization systemNot only does it provide high-precision frequency standards, but it also offers "reproducibility"UTCTime benchmark.GPSOr Beidou taming crystal oscillator output10MHzThe signal passes through10,000,000Obtained by sub division1ppsSignal, not affectedGPSThe impact of short time random jumps in Beidou's pulse can provide more reliable and stable time signals.

BeidouGPSRedundant time synchronization systemThe device has an intelligent learning algorithm that can continuously "learn" the drift and other characteristics of the crystal oscillator during the process of taming it, and store these parameters in the onboard memory. At the same time, it has an intelligent state switching function that can intelligently distinguish between themGPSThe stability of the Beidou receiving system and multiple time reference configuration methods are provided, which can be setGPSOr Beidou as the primary reference source, which can automatically switch to the backup system when the primary reference source is unstable or unavailable; If both the primary and backup systems are disrupted and unavailable, the device can automatically switch to hold mode, tame the crystal oscillator based on historical performance parameters, and continue to provide high reliability time and frequency reference information output.

BeidouGPSRedundant time synchronization systemAdopting a fully modular structure design, its input, output, power supply, etc. can be flexibly configured, and it has a rich variety of modules and boards to choose from. The types and quantities of timing signals can be flexibly selected and configured according to needs. The device has standardsRS232TheRS422/485PulseIRIG-BTheDCF77TheNTP/SNTPagreement andPTP(IEEE1588)Interface forms such as protocol time output can adapt to the timing needs of various devices and are widely used in power, communication, transportation, petrochemicals, metallurgy, water conservancy, healthcare, education, etcITIn other fields.

BeidouGPSRedundant time synchronization systemTechnical indicators:

1．GPSreceiver

12Parallel channelGPSreceiver

ReceiveL1,C/ACode signal-1575.42MHz

Timing accuracy: superior to50ns

Capture time: less than2minute

2Beidou receiver

Receiving frequency（BD2 B1）：1561.098±4MHz.

Receiver sensitivity:-157.6dBW；

TTFFCold start:32s,warm start:1s,Lost lock recapture:<1s；

3Average interval time(MTBF)≥80000Hour; Average repair time（MTTR）≤30Divide,. No maintenance is required under normal usage conditions.

4Output time and Coordinated Universal Time（UTC）Time synchronization accuracy:20nS.

5Physical and environmental parameters

Size:2U，19Inch rack mounted chassis

Weight:<2.6Kg

Power Supply:220V±20% 47Hz～63Hz

Operating Temperature-20℃～ 60℃

Storage temperature:-30℃～ 85℃

Humidity: 95%No condensation

6Power consumption:20W