基于NIOSⅡ便携式信号发生器设计

Design of Portable Signal Generator Based on NIOSⅡ

设计了一种基于SOPC技术便携式信号发生器。该系统利用DDS的理论,以NIOSⅡ嵌入式微处理器为核心的SOPC系统作为信号发生器的信号处理和控制的核心。测试结果表明此信号发生器能输出标准的正弦波、三角波、方波和锯齿波,不但波形的频率和幅度可调,而且根据实际需要可现场编程。此系统具有携带方便、输出频率稳定、波形标准、控制灵活和输出频率范围宽的优点。

A portable signal generator is designed on the basis of SOPC technology. The system uses the theory DDS, taking the SOPC technology based on embedded processing and control. The test results show that processor of NIOS Ⅱ as the core of signal generator for this signal generator can output sine waveforrns, of the signal triangle waveforms, square waveforms and sawtooth waveforms. Its wave form frequency and amplitude are adjustable, and the system can be field programmable according to the actual needs. The system has advantages such as easy to carry, stable output frequency, standard waveforms, easy control and wide bandwidth.