【摘要】 多数信号采集系统均要求其信号调理部分的参数具有可调性,以及调理模式选择的多样性。论文设计占用较少控制器IO资源且相互独立的程控型低通、高通滤波器和陷波器,并利用多路选择器作为调理信号的流向控制逻辑,从而实现具有多种组合调理模式可选,集成的放大器、滤波器参数均可调的信号调理模块。实际应用于工程地震仪中表明模块对干扰成分的压制效果明显,且其采用全模拟芯片也进一步保证了原始信号的高保真性,同时系统控制简便、占用控制资源少。更多还原

【Abstract】 Most signal acquisition systems require the parameters of its signal conditioning part is adjustable,as well as select diversity with conditioning mode.This paper designed programmed and independent programmable LPF,HPF and NF which used lesser controller IO resources by adopting MAX263,X9241U and LTC1068.Meanwhile,it adopted multiplexer as the control logic for conditioning signal direction,to achieve a signal conditioning system which had various conditioning mode to chose and integrated amplifier and filter whose parameters can be adjusted.It showed that the module has significant effect to disturbance factors,and the entire system ensured further the fidelity of the original signal due to all-analog chip,moreover,it was simple to control and took up lesser control resources.更多还原