Industrial PoE Series
PoE - the power provider
PoE is presently deployed in applications where USB is unsuitable and where AC power would be inconvenient, expensive or infeasible to supply. However, even where USB or AC power could be used, PoE has several advantages over either, including the following:
- Cheaper cabling — even category 5 cable is cheaper than USB repeaters, and the task of meeting building code requirements to run AC power cable is eliminated.
- A Gigabit connection to every device is possible, which exceeds 2009 USB and the AC powerline networking capabilities.
- Global organizations can deploy PoE everywhere without concern for any local variance in AC power standards, outlets, plugs, or reliability.
- Direct injection from standard 48 V DC battery power arrays; this enables critical infrastructure to run more easily in outages, and make power rationing decisions centrally for all the PoE devices. The priority for power-supply via PoE can be configured via the switches.
- Symmetric distribution is possible. Unlike USB and AC outlets, power can be supplied at either end of the cable or outlet. This means the location of the power source can be determined after cables and outlets are installed.
Application Example
Tunnel Traffic Monitoring
| Undoubtedly, the operating environment of tunnel is harsh coping with humid with extreme temperature and pollutants in a tunnel generating by cars and other moving vehicles, the vibration caused by moving vehicles is another challenge for network devices. Thus, a reliable Ethernet network is the top priority for tunnel traffic monitor application |