BRIEF OVERVIEW OF AUTOMATIC METER READING (AMR) LAST MILESTONE CONNECTIVITY SOLUTIONS 22 nd Nov 2012

Agenda ► Introduction ► Deployment scenario and AMR frame work ► Pre requisites of a successful AMR ► Maven’s mesh network protocol Electricity

Introduction ► Maven systems is a product engineering company with an expertise in providing end to end solutions for automatic meter reading. ► AMR solutions are based on LPRF, PLC and GPRS technologies ► Hands on expertise on ZigBee, proprietary mesh, 6LoWPAN, DLMS, Modbus, KNX, M-Bus protocols to name a few. ► Multiple pilots based on LPRF based technologies are in place based on Sub 1 GHz ( MHz) and 2.4 GHz technologies. ► Both technologies have their set of advantages / disadvantages and in the course we have benefited with substantial learning and observations about implementations of AMR. 2.4 GhzSub 1 Ghz ( MHz) ZigBee with SEP 2.0 / MSPZigBee Maven mesh network protocol

Deployment scenario AMR Frame work

Pre requisites of a successful AMR implementation ► Robust and appropriate technology for last milestone connectivity ► Ease of data collection with user friendly customer touch points ► Ease of implementation and deployment ► Reliable system with low maintenance ► Lower implementation and operational costs ► Stable and self healing networks Important ► Capability to capture accurate base line data which could be closely linked with generation capacity and distribution management ► The implementation should be scalable to a AMI, smart grid implementation with minimal changes and efforts.

Maven’s mesh network protocol

Topics ► Adhoc on-demand routing ► Mesh advantages ► Data concentrator

Adhoc on-demand routing ► Network is silent until a connection/ data is needed ► Eliminates the efforts of identifying the locations for the coordinator, routers for data fetching. o In case of ZigBee if the coordinator fails then data cannot be fetched till the time coordinator is restored and the network is created again. ► Installation process is simpler and connection setup delay is lower ► Data can be fetched on demand and / or at regular interval

Mesh advantages ► Cost effective and dynamic high bandwidth networks over a specific coverage area ► Self healing in case of failures of one of the meters in the path ► Auto discovery helps identify the newly introduced meters ► Reduces the efforts of meter commissioning ► PAN ID is used to create the specified coverage area

Data concentrator ► Data concentrator can cache the history data up to 1000 meters along with time stamp as it has larger memory available. ► DC has a list of meters to be polled and the polling duration at which the data can be cached from meters. ► DC uploads the cached data when GPRS connection is available else would store the data and upload it offline when GPRS connectivity is available. ► Cached data on server can be used for billing, plotting the usage patterns and / or energy profiling. ► Hand held unit can also collect the cached data from the DC

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