基于FPGA的X-2正弦波信号发生器的设计

Design of X-2 Sine Wave Signal Generator Based on FPGA

在汽车检修过程中,需要信号发生器提供各种测试信号去检验实际电路中存在的问题。本文设计了以EP1C3T144C8为核心芯片的信号发生器。该信号发生器由键盘电路、液晶显示、FPGA单元、D/A转化、低通滤波电路等构成,能生成汽车磁电式X-2曲轴位置传感器信号,为汽车发动机ECU的软硬件调试与测试以及各种现场调试和快速诊断工作提供了方便。

In the process of vehicle maintenance and repair,the signal generator offers various test signals to find the actual problems existed in circuit design.In this paper,a signal generator is designed with chip of EP1C3T144C8 as center.The signal generator,which consists of the keyboard circuit,liquid crystal display,FPGA unit,D /A conversion,low pass filter circuit,can generate the X-2 crank position signal of automobile.It will facilitate the debugging,test and fast diagnosis works of the hardware and software system of automobile engine ECU.