Localization of School Electronic Clock System

Digital sub clock is a terminal time display device of the school electronic clock system, which receives standard time synchronization signals from the master clock or other standard time sources and automatically performs 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. Sub clocks can be divided into digital sub clocks and pointer sub clocks in terms of time display. This article only introduces digital sub clocks using the products of Hai Rui Cheng Electric Co., Ltd. as an example, and introduces pointer sub clocks in a separate article.

1、Localization of School Electronic Clock System--Characteristics of digital sub clocks

High synchronization accuracy - using intelligent time compensation technology

Long visible distance and good angle - using high brightnessLEDAnd anti glare panel

Constant current drive, bidding farewell to traditional voltage drive,Significantly extendedLEDlifespan

Multiple timing methods -RS422/485TheNTP/SNTPNetwork, wirelesswifiTheCDMAThe4G

Intelligent management - can communicate with the upper computer and monitor the running status in real time

2、Localization of School Electronic Clock System--Technical specifications of digital sub clocks

Operating Temperature-20℃～＋70℃； humidity<95%

Power supply:220VorPOE

LEDDisplay unit luminous intensity: ≥200cd/m²

Contrast ≥10：1

LEDThe viewing angle of the display screen is ≥ ±75º

Timing accuracy: ≤1ms

Self travel time accuracy: ≤±0.05second/sky

Electromagnetic compatibility: Level III or above standard

LEDCharacter: Red/green/white/orange

Installation methods: lifting, wall mounting, inlay, etc

5Installation of school electronic clock system

All single face clocks produced by Shanghai Ruicheng Electric Co., Ltd. can be installed by hanging or hoisting, while double-sided clocks can only be installed by hanging or hoistingInstallation method for hoisting. Our company also has embedded sub clocks, specifically designed for embedded installation.

5.1 Hanging method

The back of the single face clock is pre installed with stamped wall mounting holes. The power and signal lines of the single-sided digital sub clock are connected through the top opening by default, or can be customized to be connected through the back opening. The power and signal lines of the single-sided pointer clock are connected through the back opening.

5.2 Lifting method

Both single-sided and double-sided sub clocks can be installed by lifting. Randomly equipped with suspension rods.

5.3 Embedded installation method

Embedded clock is mainly used in biochemical and pharmaceutical enterprises.

6School electronic clock system--management software

The management software mainly completes the monitoring and management of the clock system, collects the operating status information of the master clock and slave clock, and displays the working status and fault status of the clock system. Management software can provide point-to-point control over the clock system, performing necessary operations on any sub clock in the system (such as calibration, stopping, resetting, time tracking, setting countdown time, etc.). The management software records the timing log of the master clock, including the terminalIPAccess time, time deviation, and abnormal alarms.