Fanless console server, with multiple serial ports up to 16 serial and 10 Ethernet/LAN ports are Intel x86 based ranged from ATOM up to Pentium. They are also known as console access server, console management server, serial concentrator, or serial console server. Typical of console server applications are telecommunication, healthcare/medical, building automation, electric utility, transportation,factory automation, data center, POS and SCADA.
2013年8月26日 星期一
Power plant efficiency in search
In power plant, the actuator and valve create a single unit — the control valve. Actuators perform different motion sequences, including linear, pivoting and rotating motions, and they are powered by pneumatic, hydraulic or electrical energy. Actuators receive a control signal from automation systems and single board computer. The single board computer is converted into a motion so that the control element of the actuating element assumes a corresponding position. With control valves, this is a stroke motion. With flaps, ball cocks or rotary plug valves, this is a pivoting motion.
Power plants have traditionally used pneumatic actuators to drive the many control valves throughout their facilities. However, major improvements in embedded systems control-valve actuator technology are helping power providers achieve their most important objectives at a lower cost.
The new electric actuators can hold up to the demands of continuous movement.
refer to: http://www.power-eng.com/articles/print/volume-117/issue-8/features/opportunities-to-improve-efficiency.html
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