Structure of Centralizer

•  Using RS-485 to receive and send signal. Data transmittance can be done by portable machine which can either use wired or wireless Infrared method to receive and send signals. After that, using RS-485 to connect with the management software to exchange data or just simple link the two become one.

•  Using the interface to install or uninstall the GPRS. Then, the GPRS will exchange data with RS-485 and send them to management software on schedule.

•  The power source can be divided into two types: common use or reserve. The power source in common use is the city power, using the transformer in the centralizer to change the voltage to be 12V, at the same time, recharge the reserve power. When the power in common use has cut, the centralizer will automatically change mode to the reserve power, which can be used for 72 hours.

Use of Centralizer

Signal communication:

•  Check periodically and update internal storage.

•  Support insertion or deletion of the exterior functions

•  Respond to the signals from terminals at any moment, and authenticate each other during communication

•  Carry internal clock

•  Support simple command from terminal, and use encrypted data during transmittion

Data storage:

•  Support 128 block table, the centralizer can store 6 records and 1 newest status

•  Data will not be lost even with no power for 10 years, and can be read or written for 100 thousands times

Power management:

•  System power is AC220V / DC12V, reserve power is 12V / 7AH