基于多核结构的断路器在线监测系统设计

针对目前断路器在线监测中存在的系统处理能力较弱、稳定性不足等问题,采用了微处理器(ARM),数字信号处理器(digital signal piocessor,DSP),现场可编程门阵列(field piogiammable gate array,FPGA)三核平台实现断路器在线监测。断路器在线监测功能分为数据采集、数据运算和人机交互3部分。由FPGA控制ADS8568完成数据采集,断路器状态量通过传感器传入系统。DSP利用db2小波对FPGA采集的信号进行5次小波分解。将处理之后的数据通过基于Syslink异构的双核通信机制传输到ARM端,最终由ARM完成人机交互。该方案更加充分发挥3个控制核心的优势,使系统拥有更好的数据处理能力。通过测试,基于三核结构的断路器在线监测系统较之原来已有的系统在性能上有较大提高。

On-line Monitoring System Design of Circuit Breaker Based on Multi-core Structure

Aiming at the problems such as weak system processing capability and insufficient stability in online monitoring of circuit breakers, the ARM, DSP and FPGA three-core platform are used to realize the on-line monitoring of the circuit breaker. The on-line monitoring function of circuit breaker is divided into 3 parts: data acquisition, data operation and human-computer interaction. Data acquisition is completed by FPGA control ADS8568. The circuit breaker state variables are passed into the system by sensors. The DSP performs wavelet decomposition five times on the signal collected by FPGA using db2 wavelet. Processed data is transmitted to the ARM through the dual-core communication mechanism based on Syslink heterogeneous, and finally the human-computer interaction is completed by the ARM. The scheme gives full play to the advantages of three control cores, so that it has better data processing ability. Through testing, the on-line monitoring system of circuit breaker based on three-core structure has a better performance than the original system.