The history of Dalian University can be traced back to the Kanto School of Arts and Sciences established in March 1948. On the eve of the founding of the People's Republic of China, the Central Committee of the Communist Party of China officially approved the establishment of a regular people's university—Dalian University—in September 1948. As a comprehensive university, Dalian University undertakes several important national-level examination tasks. According to the Ministry of Education's requirements for the construction of standardized examination rooms, the clocks in the examination rooms must be "uniform, accurate, reliable, and visible." Any time discrepancy could lead to disputes among candidates, affect the fairness of the examination, and even cause serious examination management incidents. The university's original examination room clocks had problems such as timekeeping errors, inconsistent brands, unsynchronized time, and the need for frequent manual calibration, which could not meet the needs of modern high-standard examinations.
Basic Requirements for Examination Room Clocks:
- High Accuracy: Must maintain a high degree of consistency with national standard time, with errors controlled within seconds.
- Global Synchronization: All clocks within the examination room must display the exact same time.
- Clear and Easy to Read: The digital display must be large enough for all students in the examination room to read clearly from any position.
- Stable and Reliable: Must guarantee fault-free operation during the entire examination period.
- Easy Installation: Minimize modifications to the existing classroom environment and reduce installation complexity.
Addressing the urgent needs of Dalian University, Changsha Tianqiong Electronics provided a one-stop solution for a standardized examination room clock system, featuring "satellite timing" as its core and "POE power supply" as a key highlight.
1. Core Timing: Beidou/GPS Dual-Mode Satellite Timing
-A master clock is deployed in the campus network center, automatically receiving Beidou/GPS satellite signals to obtain and distribute national standard time with millisecond accuracy, ensuring the precision of all clocks from the source and achieving true "perfect synchronization."
2. Convenient Installation: Wall-mounted design, POE power supply for "plug and play"
- Wall-mounted digital clocks are deployed in each examination room.
- Using advanced POE (Power over Ethernet) technology, only one network cable is needed to connect the clock, simultaneously providing power and transmitting time signals, truly achieving "plug and play."
- Advantages: Greatly simplifies the installation process, avoiding the hassle of finding power outlets and laying power lines, making it particularly suitable for environments like classrooms that require high standards of wall cleanliness and ease of installation.
3. Full-Domain Synchronization: Building an automatically calibrated examination room clock system
- All examination room electronic clocks act as network slave clocks, automatically synchronizing time from the master clock via the campus network.
- The entire system can achieve automatic calibration without any manual intervention, completely eliminating time errors caused by human negligence or battery power issues, ensuring that the clock display in all examination rooms is completely consistent.
4. Professional Display: Dedicated clock suitable for examination room environments
- The clock uses high-brightness LED digital tubes for clear display with no glare, ensuring that candidates can easily see the time from any angle.
- The simple and elegant design perfectly integrates with the classroom environment, becoming a professional standard for standardized examination rooms.
III. Project Implementation Results: Establishing a Precise Standard for Exam Fairness
After the system was implemented across numerous standardized examination rooms at Dalian University, it achieved immediate and significant results:
- Achieving "zero-error" time synchronization: All examination room clocks are kept in absolute synchronization with Beijing time, providing an indisputable time basis for key events such as the start and end of exams, fundamentally guaranteeing the fairness of the exams.
- Improving exam management efficiency: It eliminates the need for exam administrators to individually check and calibrate clocks before exams, making exam management more efficient and standardized.
- Optimizing the student experience: Clear and accurate time display helps students better manage their answering pace and alleviate anxiety.
- Meeting the highest construction standards: The system fully meets and exceeds the national requirements for automatic clock systems in standardized examination rooms, providing strong support for the university to pass various acceptance evaluations.
- Stable operation and easy maintenance: The POE power supply method is stable and reliable. Since its commissioning, the system has required no maintenance, significantly reducing long-term operating and maintenance costs.
National examinations are of paramount importance, and precise timing is fundamental to fairness. Changsha Tianqiong Electronics' examination room clock system, with its ingenious PoE power supply design, is incredibly easy to install, as simple as installing a network camera. Most importantly, the satellite-based time synchronization technology truly ensures that all examination rooms are perfectly synchronized down to the second, giving us complete peace of mind when organizing any important examination. It has become a trustworthy "silent invigilator" in our standardized examination room construction.
The successful application at Dalian University fully demonstrates the technological advancement and reliability of Changsha Tianqiong Electronics' standardized examination room clock system in demanding scenarios. This solution, which uses satellite time synchronization to ensure accuracy and PoE technology to simplify deployment, perfectly meets the core needs of modern educational examinations for time management, providing solid technical support for maintaining examination fairness and improving the modernization level of educational examinations.
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