Product category: Reference Designs
News Release from: Texas Instruments (April 2001-March 2006) | Subject: Powerline modem with e-meter platform
Edited by the Electronicstalk Editorial Team on 24 February 2004
Platform points to meter
reading via power lines
Texas Instruments has unveiled and demonstrated a new powerline modem with e-meter platform at the 2004 Texas Instruments Developer Conference in Houston
This platform offers the system-level integration required to rapidly deploy next-generation remote metering products to market faster while reducing cost. The powerline modem with e-meter platform applies advanced orthogonal frequency division multiplexing (OFDM) signal processing techniques to transmitting low- to medium-speed data across low-voltage power lines appropriate for remote metering applications.
This article was originally published on Electronicstalk on 24 February 2004 at 8.00am (UK)
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OFDM makes the modem robust against multipath interference and impulse noise that is common on power lines.
The kit consists of two modems, each packaged in a meter-sized box.
The 'slave' modem communicates either measured e-meter data or test data across a power line as requested by the 'master' modem.
The 'master' modem can be optionally connected via RS232 or USB to a PC to monitor the measured data or display modem error rates.
The new platform uses numerous TI analogue and digital signal processing (DSP) components.
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An MSP430FE427-based single-phase e-meter is included on the slave unit to perform power measurement functions.
The modem uses a TI TMS320C5409A DSP for its OFDM and Viterbi signal processing, an AFE1230 codec for data acquisition and filtering and a THS6182 line driver to drive data to the power line through a coupling transformer.
TI's platform technology works as a blueprint for designers, effectively decreasing design time by providing the customer with all schematics, Gerbers, firmware, software, bill-of-materials - everything to rebuild the platform - and complete documentation.
A cross between evaluation models, which are intended for general-purpose designs, and reference designs, which are optimised for individual applications, TI's platforms give engineers more time to invest in design, while lowering overall project cost by eliminating months of system integration.
In addition to the powerline modem with e-meter platform, Texas Instruments offers three other unique demonstration platforms that are currently available.
The quad-channel thermal electric cooler platform demonstrates high-precision temperature regulation, within 0.01C of four temperature channels (for example, EDFA pump lasers) using a single TMS320F2812 digital signal controller with data acquisition, signal conditioning, pulsewidth modulator (PWM) drivers and power management components.
Industrial control solutions via the Controlled Area Network (CAN) bus demo platform include three demo boards interconnected through cables supporting the CANbus.
Demonstrating heat sensing, light intensity measurement and motor functions, the platform showcases the industry's first 3.3/5V mixed voltage CANbus capability using TI's SN65HVD230/251 CANbus transceivers.
The low-cost video interface demo platform shows how to convert analogue video source signalling to a VGA-type output.
Complementing its highly integrated TMS320DM642 solution, the platform connects a lower cost TMS320C6204, TMS320C6205 or TMS320C6711 DSP to TI's single TVP5150 or multichannel TVP5145 video decoder through an inexpensive FPGA.
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