采用霍尔传感器阵列检测空间磁场信息，DE0开发板核心平台完成对信号的采集处理及计算，实现磁源定位。-Using Hallelement sensor array detection space magnetic field information,realize magnetic source orientation.

PWM波控制LED亮度,使用Verilog语言，开发环境为Altera的quatus 11，使用的的DE0-Nano-PWM wave control LED brightness, the use of the Verilog language development environment for Altera' s quatus 11, use the DE0-Nano