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Building 1, National Science and Technology Park, Shanghai University of Technology, 128 Xiangyin Road, Shanghai
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Shanghai Ruicheng Electric Co., Ltd
Campus clock system maintenance free
NegotiableUpdate on 05/25
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Overview
The campus master clock system, also known as the "electronic clock system," is maintenance free and consists of a central master clock, multiple slave clocks, and management software. Under normal operation of the system, the central master clock continuously calibrates its internal clock accuracy with synchronous satellite (GPS or Beidou system) time signals, and sends precise time signals to sub clocks and other weak current system equipment that require standard time signals in various regions through transmission systems (network, 485 bus), achieving time unification of the entire network.
Product Details
1Overview of Campus Clock System
Campus clock system maintenance free(also known as "electronic clock system") is composed of a central master clock, multiple slave clocks, and management software. Under normal system operation, the central master clock synchronizes with the satellite（GPSThe time signal of the Beidou system continuously calibrates the accuracy of its internal clock through the transmission system (network485The bus sends precise time signals to sub clocks and other weak current system devices that require standard time signals in each area, achieving time synchronization of the entire network.
The clock, as the terminal time display device of the campus clock system, is an indispensable part of the unified system solution for standard time in various industries. The high-precision sub clock series products produced by Shanghai Ruicheng Electric Co., Ltd. can receive standard time synchronization signals from the master clock or other standard time sources and automatically perform time correction; In the event of a communication interruption with the master clock, it enters the self guarding operation state and can automatically calibrate after the master clock signal is restored. The clock can be passed throughNTPNetwork, wirelessWIFITheCDMAThe4GandRS485Multiple communication methods such as serial port can obtain standard time, and the sub clock can strictly compare, analyze, and judge the received time synchronization signal, thereby eliminating the interference of abnormal time information.
The Rui Cheng series of sub clocks has multiple styles, high time accuracy, and flexible interfaces, which can meet various needs of sub clocks in various industries. The product is widely used in public places such as hospitals, pharmaceuticals, airports, stations, subways, schools, civil air defense, hotels, sports venues, radio and television, office buildings, and other fields.
2Campus Mother Clock Systemmaintenance-free(Digital Sub Clock)technical indicators
Operating Temperature-20℃～＋70℃； humidity<95%
Working voltage:AC220V±20%，50Hz±10%orPOEPower supply (some small-sized sub clocks are available)POEPower supply)
Average power consumption:3W～30W(Determined by the size of the digital tube, single-sided and double-sided display, and display content)
Timing accuracy:≤1mS
Self travel time accuracy: ≤±0.05second/sky
LEDDisplay screen luminous intensity:≥200cd/m2
Contrast ratio:≥10：1
LEDDisplay viewing angle≥±75°
MTBF：≥150000hour
Average repair time（MTTR）Generally not greater than30minute
The service life shall not be less than20Under normal usage conditions, no maintenance is required
Electromagnetic compatibility: Level III or above standard
LEDCharacter color: red, white, green optional
Installation method: hanging, hoisting, embedding
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