High Isolation Amplifier Special For Metro Rail Voltage Monitor

July 5, 2010 - PRLog -- Shenzhen SUNYUAN technology company develops a series of ISO Series Signal isolation amplifier products special for track control systems, vehicle monitoring systems, data acquisition control (SCADA) system. Metro orbit control system to achieve data acquisition, equipment control, measurement, parameter adjustment and a variety of signal alarm, it is imperative to collect and isolated or converte the field pressure, temperature, humidity, flow, speed, level, displacement sensors signal.But because of sensors power distribution, output signal type differences, need match different isolated amplifier products.
In the rail transportation, the track circuit control system is one of the important ensure traffic signal devices,it must always check the status of track circuit to ensure the track circuit normal, reliable work. The track circuit is operating normally, you can track voltage by monitoring the changes in apparent. With the development and application of microelectronics technology, especially the programmable logic controller PLC to micro-processing technology, integrated computer technology and automation technology, the signal generated by the station interlocking control system, is gradually replacing the relay-type 6502 electric centralized control system Its orbit is also PLC-voltage test set consisting of voltage monitoring system to replace the track. This track voltage monitoring system is no contact control circuits, equipment, long life, stable performance, reliable and accurate test data, the operation simple and efficient. All stations on the rail section of the voltage test, use the mouse in the track voltage monitor screen click the button loop testing, all the test data quickly displayed. The same time, the computer will automatically detect the voltage value for each section of a track and set the standard voltage value to compare, if we find a difference is too large, that is, the track voltage is too high or too low, given alert message to inform the maintenance staff anticipates potential failures. Rail voltage monitoring system's main process are: host computer (workstation) the issue of rail voltage monitoring instruction, the next-bit machine (PLC) received instructions to carry out logical operations, the sending address of the signal driving the track-voltage collector, a collection channel gating will be collected from 0 to 30 volts AC voltage is converted to 0 to 5 volt DC voltage signal into the PLC system, through the logic operation and data processing, will result into the data storage area, host computer read out the data on the CRT displayed.
Metro rail voltage usually is 750VDC and 1500VDC. ISO EMH series tracks the high voltage monitoring 6000VAC isolation amplifier is designed for track circuit monitoring system PLC.
http://www.szsunyuan.com/sy/upload/ISOEMH%204-20mA.pdf

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Founded in 2002, Shenzhen Sunyuan Technology Co., Ltd. has been dedicating to design and produce DC-DC Converter, Electronic Transmitters ,Speed Transmitters and Analogue To Digital Converters. These modules are available in both PCB and DIN rail mounted.