第页基于单片机的电机测速系统摘要：在工程实践中，经常会遇到各种需要测量转速的场合，例如在发动机、电动机、机床主轴等旋转设备的试验运转和控制中，常需要分时或连续测量、显示其转速及瞬时速度。为了能精确地测量转速，还要保证测量的实时性，要求能测得瞬时转速。本文介绍了一种基于STC89C52单片机的电机测速系统，该系统利用霍尔传感器采集脉冲信号，通过定时计数算法程序，将转速结果实时显示出来。C语言具有开放性和灵活性强的特点，编写起来比较易于上手，不像汇编语言那样局限。所以本次采用的是C语言编程来实现。关键词:单片机，电机测速系统，霍尔传感器，定时Abstract：Inengineeringpracticeoftenneedtomeasurespeedencountervariousoccasions.Forexample,Attheengines,motors,machinetoolspindlesandotherrotatingequipment’soperationandcontrolofthepilotoftenneedfrequenttime-sharingorcontinuousmeasurementsshowitsspeedandinstantaneousvelocity.Inordertoaccuratelymeasurespeed,ensurethereal-timemeasurementsandrequireinstantaneousspeedcanbemeasured.Thispaperintroducesamicrocomputer-basedSTC89C52motorspeedsystem,thesystemusesHallsensorpulsesignalcollectedthroughthetimercountingalgorithmprograms,willspeedtheresultsofreal-timedisplay.Cprogramminglanguagehastheopennessandflexibility,strongfeatures,andit’sdifficulttowriteeasytofly.Itisunliketheassemblylanguageaslimitations.So,thisistheCprogramminglanguageusedtoimplementKeyword：Single-chip，MotorSpeedSystem，Hallsensor，Timing目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc250097874"1前言PAGEREF_Toc250097874\h1HYPERLINK\l"_Toc250097875"2．总体方案设计PAGEREF_Toc250097875\h2HYPERLINK\l"_Toc250097876"2.1方案论证PAGEREF_Toc250097876\h2HYPERLINK\l"_Toc250097877"2.2方案比较PAGEREF_Toc250097877\h2HYPERLINK\l"_Toc250097878"2.3方案选择PAGEREF_Toc250097878\h3HYPERLINK\l"_Toc250097879"3.硬件部分设计PAGEREF_Toc250097879\h4HYPERLINK\l"_Toc250097880"3.1速度检测电路PAGEREF_Toc250097880\h4HYPERLINK\l"_Toc250097881"3.1.1开关型霍尔传感器介绍PAGEREF_Toc250097881\h4HYPERLINK\l"_Toc250097882"3.1.2传感检测电路PAGEREF_Toc250097882\h5HYPERLINK\l"_Toc250097883"3.2单片机最小系统电路PAGEREF_Toc250097883\h6HYPERLINK\l"_Toc250097884"3.2.1主控器STC89C52的介绍PAGEREF_Toc250097884\h7HYPERLINK\l"_Toc250097885"3.2.2时钟电路PAGEREF_Toc250097885\h8HYPERLINK\l"_Toc250097886"3.2.3复位电路PAGEREF_Toc250097886\h9HYPERLINK\