TNS Asia Pacific Pte Ltd

  Overview

A new residential community was being developed in Taiwan by a well-known construction company. In this community, intelligent buildings would be connected with fiber Ethernet. Residents will have access to high tech services such as high speed Internet connections, advanced security systems, intelligent elevator control, and on-demand TV.

In addition, each building would be monitored in real-time from a central control room, and individual fire alarms could be triggered as needed. The system required every fire alarm to be connected to the control room, which would be staffed by a single security guard.

As there was insufficient space in the existing pipes to install I/O wiring from the alarms to the control room. Another method was required to transmit the I/O signals. Since fiber Ethernet was already installed, the client wanted a solution that satisfied the following requirements:

• - Transmits I/O signals over Ethernet, from each building to the control room
• - No extra controller needed
• - Minimal additional training and wiring effort

Solution

TNS offers a variety of I/O solutions for almost any industrial requirement. MOXA EDS-405A switch was used for the network infrastructure and MOXA ioMirror E3210 was used to transmit I/O signals.

Fire alarm sensors were connected to one ioMirror unit, which exchanged signals over Ethernet with another ioMirror unit that was connected to the control center. By utilizing the existing fiber network, I/O signals could be transferred without additional wiring effort. An advantage with the ioMirror E3210 is that channel-to-channel mapping is also supported, so one unit could receive I/O signals from different channels over Ethernet.

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