These modules, sold in pairs, communicate serially without extra wires or cables. With a DB-9 serial port on one side and a 110/220V power cable slot on the other, they transmit and receive high-frequency signals over power lines using high-pass filters, all with low h.f. output to keep from interfering with electric power on the network. They can transmit data to 500 m at up to 230 kbps, with 56-bit DES data encryption for RS232 signals. The modules are based on a 32-bit RISC processor with 8 MB SDRAM and 4 MB flash memory. They work on 110V or 220V supplies, have built-in surge protectors, and are DTE/DCE selectable.
The Industrial Internet of Things may be going off the deep end in connecting everything on the plant floor. Some machines, bearings, or conveyors simply donít need to be monitored -- even if they can be.
Wind turbines already are imposing structures that stretch high into the sky, but an engineering graduate student at the University of Notre Dame wants to make them even taller to reduce energy costs and improve efficiency.
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