2013年全国大学生电子设计竞赛简易照明线路探测仪（K题）【专科组】2013年9月7日简易照明线路探测仪（K题）【专科组】【摘要】本简易照明线路探测仪的设计是根据通电导线在其周围产生磁场的情况下，利用探测其磁场的方法，通过对通电导线所产生的磁场使探测磁头产生电压，对此探头电压进行采样放大，使其输出一定大小的波形，通过驱动蜂鸣器示意，从而达到对通电线缆的探测。该系统能够对60W白炽灯和11W节能灯通电导线所产生的微弱磁场进行探测，从而达到对带电线缆的扫描、记录带电线缆的走向。在探测结束后，该系统保存线缆位置方格序号，而且在必要时候能够随时查阅线缆位置走向。而且该系统对没有带电线缆走过的位置，探测仪不对地球磁场所产生的影响使系统产生误报，从而可以准确达到了检测指定位置是否有带电线缆，是理想的简易照明线路探测仪。【关键词】照明线路；磁场；探测仪[Abstract]thedesignofsimplelightingcircuitdetectorisbasedontheelectricalwireinelectriccurrentproducesamagneticfieldprinciple,usingthemethodofdetectingthemagneticfield,bywhichproducestotheelectrifiedwiremagneticfieldmakesthedetectionheadgeneratesavoltage,thisvoltagesamplingprobeamplification,sothattheoutputofacertainsizebydrivingwaveform,buzzerhint,soastoachievethedetectionofpowercable.Thesystemiscapableofweakmagneticfieldgeneratedbythe60Wlampand11Wlampwiretodetect,soastoachievethechargedcablescanning,recordinglivecable.Intheendpositiondetection,cableboxnumbertosavethesystem,butalsocanaccessatanytimetocablepositionwhennecessary.Andthesystemofnoelectriccablethroughtheposition,effectoftheearth'smagneticfielddetectordoesnotgeneratefalsepositivesgeneratedbythesystem,whichcanaccuratelyreachthedesignatedpositiondetectionwhetherchargedcable,isasimplelightingcircuitidealdetector.[keyword]lightingcircuit；magneticfield；detectorI目录1系统设计要求................................................................................................................................11.1任务.........................................................................................................................................11.2设计相关要求.........................................................................................................................12系统方案论证与选择....................................................................................................................22.1控制模块..............................................................................................................................22.2显示回放模块..........................................................................................................................32.3探测模块.................................................................................................................................33系统理论分析与计算.....................................................................................................................43.1系统传感器的选用分析..........................................................................................................43.1.1传感器...............................................................................................................................43.1.2霍尔传感器.......................................................................................................................43.1.3磁阻效应法.......................................................................................................................43.2原理计...
