基于峰值误差的传感器脉冲信号检测研究仿真  

Research and Simulation of Sensor Pulse Signal Detection Based on Peak Error

作　　者：王枫[1] 王兆明[1] WANG Feng;WANG zhao-ming(College of applied technology Jilin University,Jilin Changchun,130012 China)

机构地区：[1]吉林大学应用技术学院,吉林长春130012

出　　处：《计算机仿真》2020年第12期426-429,459,共5页Computer Simulation

摘　　要：对传感器脉冲信号的有效检测,有利于实现对检测环境的及时准确控制。由于实际应用时采集信号具有叠加特性,以及待检测目标脉冲信号自身的复杂特性,导致现有方法从采样到检测完成会产生严重的信号失真,为此提出了基于最小峰值误差的脉冲信号检测方法。方法首先根据采样信号的叠加特性,得到相应的采样门限,并引入了最小峰值误差修正采样门限与采样间隔,从而准确及时地采集目标脉冲信号,将脉冲信号的采样失真度控制在最小采样分辨率;然后得到关于峰值幅度与峰值出现时间的采样信号模型,经过汉明滑窗对数据进行平滑处理后得到采样序列,并利用偏导计算与泰勒级数展开,求出目标脉冲信号的幅值,最终完成检测。通过仿真结果,验证了基于最小峰值误差方法能够从输入采样信号中快速准确的识别出目标脉冲信号,很好的跟踪脉冲信号变化,并以最小误差采集到峰值数据,有效提高了传感器脉冲信号的检测性能。Effective detection of sensor pulse signal is conducive to timely and accurate control of the detection environment.Because of the superposition characteristic of the collected signal in practical application and the com-plex characteristics of the target pulse signal itself to be detected,as a result,serious signal distortion may occur in the existing methods from sampling to detection.Therefore,a pulse signal detection method based on minimum peak error is proposed.Firstly,based on the superposition characteristics of sampled signals,the corresponding sampling threshold was obtained.On this basis,the minimum peak error correction sampling threshold and sampling interval were introduced.Thus,the target pulse signal can be accurately and timely collected.The sampling distortion of pulse signal was controlled at the minimum sampling resolution.Then the sampling signal model about peak ampli-tude and peak time was obtained.After smoothing the data through Hamming sliding window,the sampling sequence was obtained.The partial derivative calculation and Taylor series expansion were used,the amplitude of the target pulse signal was calculated,and the detection was completed.Through the simulation results,it is verified that the method based on the minimum peak error can recognize the target pulse signal quickly and accurately from the input sampling signal.It can track the change of pulse signal well and collect peak data with minimum error,and the de-tection performance of sensor pulse signal is improved effectively.

关 键 词：脉冲信号 峰值误差 采样门限 最小采样分辨率 

分 类 号：TN911.7[电子电信—通信与信息系统]