Development of Meter-Reading System Building Centralized Controller in Intelligent Residential District

In a residential district, building centralized controllers are used to check the power consumed in each building, and store the data into data memory. Building centralized controller could communicate with filed data collector using CAN bus, as well as with upper computer by GPRS. Considering the data memory and reliability, FM1808 ferroelectric memory is adopted. To enhance the anti-interference ability, some measurements in hardware, such as fiber-electronic coupling, high frequency channel, decoupling capacitors settlement, are taken. Meanwhile, DS12887 is applied to reset microcontroller every 500 ms.