**The necessity of establishing a clock system

Time is the basic information and the basis of information. It is an indispensable information base for distributed data acquisition, timing control, and data analysis.

The advent of smart hospital applications not only simplifies medical procedures and reduces medical costs, but also increases the feelings that doctors value. For doctors, it can not only reduce labor time, but also improve patient management quality and improve diagnosis and treatment. It is recognized by patients in continuous learning; for hospitals, it is able to more directly understand the needs of patients, serve patients, improve service satisfaction, and build a harmonious doctor-patient relationship.

In the past two years, smart phones and mobile medical services have opened up many new business opportunities and application scenarios. Various new players are rushing in, mainly divided into B2B modes for hospitals and doctors, and B2C modes for direct users. The former is considered professional. People provide medical knowledge, and the latter is a "self-examination + consultation" telehealth consultation application.

There is a basic trust behind these applications, which is the unified time axis. The distributed exchange information of these applications is time-tagged. The unified time stamp provides the basis for the timeliness, fairness, orderliness and effectiveness of patient visits, and enables doctors to conduct accurate time-searching and analysis. A lot of scientific evidence was cited to facilitate their diagnosis.

Between different medical institutions, a medical information integration platform was set up to integrate the business processes between hospitals. Medical information and resources can be shared and exchanged, which greatly increased the rational distribution of medical resources and truly patient-centered. The unified time axis is even more critical.

Time service system receives standard time signals from GPS or Beidou by dual redundant CT-TSS2000C master clock, and provides uniform standard time signals for other related service system equipment and sub-clocks through RJ45 interface or RS485/422 at the central computer room, making each related The system equipment, subclocks and master clock systems are synchronized to achieve a unified time standard. In order to meet long-distance transmission configurable optical network switches and optical terminal sub clocks.

The time display system is completed by the LED digital clock group. The LED digital display sub clock receives the time signal from the master clock to realize the unified time display in the whole hospital.

The network time management platform realizes on-line monitoring of the time synchronization performance of the master clock, sub clocks, business systems or equipment, realizes time-synchronized closed-loop management, realizes point-to-point monitoring, and detects fault automatic alarms. In addition to monitoring the operation of sub clocks, It can monitor the working status of Beidou or GPS standard time signal receiving unit, master clock communication interface, and various transmission channels. Automatically determine the level of faults (faults are generally divided into three levels: secondary faults, general faults, and severe faults). According to the fault level, the alarm information is sent to the relevant equipment management personnel who are not on site by three methods.