Overview
Changjun Meixi Lake High School, located in Changsha’s Dahexi Pilot Zone, continues the century-old tradition of the prestigious Changjun education brand. Established in 2012 and managed by Changjun High School under the Changsha Municipal Education Bureau, the school covers 120 acres with 72 classes from junior to senior high school, accommodating 2,764 students and staffed by 232 teachers.
As a key provincial demonstration high school, the campus annually hosts dozens of national and provincial standardized exams, requiring absolute precision in timekeeping to maintain exam fairness and operational efficiency.
Dispersed and outdated clocks: Original time devices were scattered and lacked consistent calibration, causing sporadic timing errors during exams.
Heavy network dependency: High reliance on network connectivity for time synchronization increased risk of interruptions.
Exam timing accuracy: Inability to guarantee sub-second synchronization (<1 second) across all exam rooms, teaching buildings, and administrative areas.
Maintenance inefficiency: Manual clock calibration was time-consuming and labor-intensive, impacting operational workflow.
Deployment of over 300 wall-mounted intelligent LED clocks covering exam rooms, waiting areas, and teaching buildings.
Automatic time calibration using NTP protocol synchronized with centralized servers, achieving ≤0.5 seconds daily time error.
Low power consumption design with LED displays featuring waterproof, dustproof, and interference-resistant properties.
Installation of two redundant NTP servers receiving dual-source timing signals from BeiDou and GPS satellites to ensure stable and reliable time references.
Provides precise timing to campus monitoring, exam management systems, and other networked devices to facilitate coordinated operation.
Remote monitoring of all clock devices, enabling one-click batch calibration and automatic fault alerts.
Operation and maintenance efficiency improved by 80% through centralized management.
| Feature | Shutai Clock DH2248 | Tianqiong Electronics TQ5519 |
|---|---|---|
| Core Function | Endpoint time display device | Network time synchronization server (NTP) |
| Primary Use | Classrooms, exam rooms, offices | Synchronizes network devices across campus |
| Timing Methods | GPS/BeiDou, 4G/WiFi, Ethernet | GPS/BeiDou (external antenna required), 4G, LAN NTP |
| Power Supply | DC 5V/2A or optional PoE | DC 5V/2A with built-in low-power design |
| Deployment Complexity | Wall or desktop mount, plug-and-play | Requires router/switch connection with multi-port support |
| Advantages | • High-precision display |
TQ5519 NTP Server as Core:
Uses GPS/BeiDou + 4G dual redundant time sources to synchronize servers, monitoring systems, and teaching terminals across multiple campus networks and buildings.
DH2248 Clocks as Endpoints:
Installed in exam rooms, classrooms, and offices, synchronizing via NTP/Ethernet with the TQ5519 server for unified, high-visibility LED time displays.
Standardized Exam Rooms:
DH2248 clocks integrate with exam and monitoring systems to eliminate time discrepancies and ensure fair testing conditions.
Campus Network Management:
TQ5519 synchronizes all networked devices, preventing log conflicts caused by time differences.
Emergency Response:
DH2248 clocks maintain time display during power outages with built-in batteries, while TQ5519 servers continue synchronization via 4G/BeiDou signals, supporting timely emergency coordination.
100% exam room coverage: Time error maintained under 0.5 seconds in all 52 exam rooms.
80% improvement in maintenance efficiency: Remote clock management replaces manual checks.
Zero fault incidents: Successfully supported 12 national-level exams including the 2023 college entrance exams.
30% energy savings: PoE power supply reduced overall system power consumption.
"The Shutai clock system has completely resolved the persistent problem of clock discrepancies in our exam halls. Even in shielded exam environments, the system maintains ultra-high accuracy through its built-in atomic clock, truly achieving fairness in the dimension of time."
Shutai Electronics is a professional leader in satellite navigation and precision time synchronization technology. With over 14 years of experience in R&D, manufacturing, and sales, Shutai serves hospitals, schools, enterprises, and government agencies with reliable time and frequency standards. Shutai Clocks is the preferred brand for synchronization solutions in China, supporting numerous institutions with accurate timing services.
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