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ETTC'2003 - SEE

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ETCC'2003 European Test and Telemetry Conference<br />

Supervising parts of a system consist of local data concentrators (P2LPC in figure 1) and/or<br />

hand terminal units. Local data concentrator P2LPC locally collects data from meters that are<br />

located within their communication range and database. Data collection is running either over<br />

pre-defined schedule (polling) or by manual intervention from the utility center. Data are stored<br />

in P2LPC on Flash memory, processing is running over PC WIN CE 4.11 platform. Data<br />

concentrator transmits meters data when it receives a call from the utility’s center or when an<br />

alarm occurs. Several communication possibilities exist like GSM, GPRS, ISDN, plain PSTN or<br />

LAN.<br />

RF modem with RS232<br />

and power supply cable<br />

DLC part<br />

figure 4 Data concentrator P2LPC<br />

figure 5 External RF modem, RS232 interface<br />

PC platform on<br />

WIN CE OS<br />

GSM modul

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