基于塑料光纤和嵌入式技术的智能电表系统设计

Design of Intelligent Electric Meters Based on the Plastic Optical Fiber and Embedded Technology

目前的用户用电信息采集方式大部分为人工抄表方式,即使采用了自动抄表方式,其抄表方式也是采用无线或者导电的铜线作为传输介质来进行电力采集信息传输,第一种抄表方式落后,且效率低下;第二种抄表方式具有不稳定性等因素。因此需要设计一种软硬件可扩展的智能电表,该电表将塑料光纤作为电力系统中电能电量采集的传输介质,主控CPU采用的是基于Cortex-M3内核的微控制器STM32F107,采用ADE7953芯片实现电量采集,在不采用复杂的纠错码处理的情况下,可实现通信误码率低于10-9。

At present,manual meter reading is most used for collecting users＇ electric power information.Even with the automatic collecting mode,the meter reading methods still use wireless or conductive copper wire as the transmission medium for power information transmission. The first method of meter reading is outdated and with low efficiency; the second method can bring instability factors. So the design of an intelligent electric meter in which software and hardware can be extended is needed. The smart electric meter introduces the plastic optical fiber as transmission medium of electricity power acquisition in the power system, uses the microcontroller STM32F107 based on architecture of the ARM Cortex- M3 core as master CPU,uses ADE7953 chip for electric energy acquisition. Without using complex error correcting code processing,the communication error rate lower than the 10^9 can be realized.