外文翻译基于单片机信号发生器设计.docVIP

The design of microcontroller-based signal generator Huang Pengyong (Meizhou Bay Vocational Technical College, Putian, Fujian, 351 254) Abstract Waveform generator, a simple function signal generator, a produce a variety of waveforms, such as the triangle wave, sawtooth wave, square wave, sine waveform circuit. Function signal generator circuit experiments and equipment, instruments with a wide range of uses. By the principle of the function generator, as well as structure analysis, can be designed one can transform the triangle wave, sawtooth wave, square wave, sine function waveform generator. Function signal generator signals in industrial production and scientific research to measure the performance and parameters of the components, electrical and electronic products index validation, parameter adjustment, and performance appraisal. Most of the commonly used signal generator by an analog circuit, this analog signal generator for low-frequency signal output often requires the RC value, so that not only the parameters of accuracy is difficult to guarantee, but the size and power consumption are large by the digital circuit composed of low-frequency signal generator, although its performance is good, but larger, more expensive, high-precision, wide amplitude modulation will become the trend of the digital signal generator. This article describes the 89C52 microcontroller and digital to analog converter DAC0832 to produce the desired signal of the low frequency signal source, the signal amplitude and frequency can be controlled as required. The article briefly describes the structure of principles and use of the DAC0832 digital-to-analog converter, the 89C52 basic theory and design of circuits a variety of chips. The paper focuses on how to use microcontroller to control the D / A converter to produce the hardware and software programming of the above signals. The signal frequency range is also adjustable as required.The core of the design tasks are: AT89C5