Microchip has developed the new power-line modem (PLM) PICtail Plus daughter board development kit (AC164145) for the utility frequency band.
The kit supports the development of products which communicate using the same wiring that provides power, allowing instant networks to be created at low system and deployment costs.
The kit provides communication over power lines using a binary phase shift keying (BPSK) modulation scheme, with the onboard modem using the CELENEC A utility frequency baseband of 72 kHz, for communication at a rate of 6 Kbps. In addition, the modem hardware is compatible with the universal power line, and can operate on 110 V or 220 V electrical systems.
The soft modem is based on the scalable dsPIC33F digital signal controller (DSC) architecture and interfaces with Microchip’s Explorer 16 development board. It is supported with royalty-free schematics, demo code and software in source-code format.
Applications for power-line communication include utility power meters, in-home energy monitoring and control, and smart-grid products. The utility-band daughter board includes two nodes for out-of-the-box, point-to-point communication, allowing customers to start running a selection of demos in minutes. The BPSK scheme provides a robust modulation method that performs well in noisy environments, and the data rate can be selected in software.
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