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ASMgrid2 Reference Designs enable smart meter BOM reduction

Posted: 11 Oct 2012 ?? ?Print Version ?Bookmark and Share

Keywords:ASMgrid2? smart mete? ZigBee? AEMET? RF-mesh communication?

Accent has announced plans to introduce the ASMgrid2 Reference Designs to the company's comprehensive set of hardware and software tools.

Accent plans to unveil three new designs that will showcase the full communication capabilities of ASMgrid2's integration in complete system configurations required for wired and wireless smart meters. The new designs will enable smart meter vendors to reduce bill-of-materials with future-proof technology supporting the latest standards.

All additional communication system components have been incorporated as would be required in a production optimised ASMgrid2-based smart meter. The ASM201 Reference Design features an extremely cost optimised total BOM, by incorporating a ZigBee PA, SDRAM, and SPI Flash to the device's world-leading integration, which includes a high-performance ARM926EJ-S, industry-best 10,000:1 Class 0.2 metrology solution (AEMET), and ZigBee radio with modem. The design provides a scalable smart meter application and communications platform with integrated home-area-network support. As a result, emerging communication standards, such as ZigBee IP and SE2.0, and additional software-based meter capabilities can be seamlessly incorporated.

For near-area-network (NAN) RF-mesh communication, Accent offers the ASM211 Reference Design, which can be directly coupled with the ASM201 Reference Design enabling a complete and powerful dual RF-mesh system. The device integrates the industry-only complete 802.15.4g radio and modem solution (Accent's SUNFX-4G) supporting FSK and OFDM options for up to 800 kbps performance. The design achieves a minimum total BOM in a 3 cm x 3 cm form-factor and includes a separate PA to provide up to 30 dBm (1 Watt) output power.

The ASM221 Reference Design incorporates a full PLC-based, standard-compliant smart meter communication system specifically designed to enable industry-best low-cost BOM and utilising the device's CortexTM-M3 processor, AEMET metrology solution, embedded Flash, and SUNFX-PLC modem + AFE for G3/PRIME/P1901.2 support. Additional system functions include line driver, current transformer, and PA sections. The ASM221-based system enables significant cost savings via its function integration while also providing uncompromised flexibility and scalability needed by this market space.

The ASMgrid2 Reference Designs are available now, including schematics, layout files, and Gerber files. The ASMgrid2 product family is also supported by Accent's comprehensive software offering that includes respective MACs, protocol stacks, and reference application software.

- Paul Buckley
??EE Times

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