The TLACS uses power line technology to trigger bidirectional communication on existing electrical wiring. The principle of this technology consists of superposing onto the alternative electrical signal of 50 or 60 hertz a signal of low energy and higher frequency. This second signal travels on electrical installations and can be received and decoded remotely. Therefore, the signal is received by any receiver located on the same electrical network.
The Nyx Hemera Technologies team has over 20 years of experience in developing power line communication technologies. In fact, most employees started developing microcontrollers and applications complying with CeBUS® protocols at the beginning of 1990s and PowerBus™ standards in 2000.
A first version of the TLAC system, using PowerBus, was installed in the Kallang/Paya Lebar Expressway (KPE) Tunnel in Singapore in 2007. A new version of the system is being deployed in the Marina Coastal Expressway (MCE) and will be fully operational in 2013.