1、 I 基于 ARM 的简易手持示波器的设计 摘 要 本设计是基于 ARM(Advance RISC Machine)以 ARM92为控制核心简易手持 示波器的设计。包括前级电路处理，AD 转换，波形处理，LCD 显示灯模块。前 级电路处理包括程控放大衰减器，极性转换电路，过零比较器组成，AD 的转换速 率最高为 500KSPS，采用实时采样方式，设计中采用模块设计方法。充分使用了 Proteus Multisim 仿真工具，大大提高了设计效率，可测量输入频率范围为 10HZ 60KHZ 的波形，测量幅度范围为-3.3V+3.3V,并实现波形的放大和缩小，实时 显示输入信号波形，同时测量波形输入
2、信号的频率。 总体来看，本文所设计的示波器，体积小，价格低廉，低功耗，方便携带， 适用范围广泛，基本上满足了某些场合的需要，同时克服了传统示波器体积庞大 的缺点，减小成本，完全可以把本设计当做手持数字示波器1。 关键词：AD ，ARM，实时采样，手持数字示波器 II A Design of Simple Handheld Oscilloscope Based On Arm ABSTRACT The design is based on the ARM ( Advanced RISC Machine) with ARM92 as the control core of simple handhe
3、ld oscilloscope design .Includes a front stage circuit ,AD conversion ,waveform processing ,LCD display lamp module ,The front stage circuit processing includes programmable amplifier and attenuator, a polarity conversion circuit , a zero cross comparator , AD conversion rate up to 500KSPS, real-tim
4、e sampling, design adopts module design method , Make full use of the Proteus, Multisim simulation tools ,greatly improving the efficiency of the design ,can measure for input frequency range of 10HZ-60KHZ waveform ,amplitude measurement range of -3.3v-+3.3v,and the realization of waveform amplification and narrow, real-time display of the input signal waveform ,while measuring the wave shape of the frequency of the input signal. Overall, the oscilloscope designed, small volume, low pri
