基于51单片机的智能遥控晾衣架设计硬件主要构成:单片机+最小系统+无线收发模块+编码解码模块+电机模块+限位开关模块+数码管显示模块+湿度检测模块+光敏检测模块+继电器驱动模块+蜂鸣器模块+LED指示灯模块+按键模块主要功能实现:1.电机的转动是通过继电器控制的,可见负载的广泛性。实际应用中继电器可以接其他负载;2.开机初始时为智能模式,通过光敏自动识别光线强弱(白天或夜晚),采用DHT11温湿度传感器检测空气的湿度,数码管显示湿度值,当湿度小于80%时,电机会相应的白天伸出或夜晚收回衣架,碰触相应的限位行程开关,停止转动。如果外面的湿度达到80%以上时,即使是白天衣架也会自动收回。实际应用中行程开关安装在晾衣架的上下限位处,当晾衣架上升或下降到极限时,会碰触行程开关(设计中只是模拟,需要用手碰触),行程开关会给单片机信号,从而防止过卷,安全无误;3.当按下遥控板上的切换按键,实现智能模式与手动模式的切换。手动模式按一下伸出或收回键电机相应的转动,再按一下停止,晾衣架到限位即手动碰触行程开关会停止转动。
上传时间: 2022-07-03
上传用户:trh505
基于51单片机的指纹密码锁主要组成:单片机+最小系统+LCD1602液晶显示模块+LED指示灯模块+继电器驱动模块+矩阵键盘模块+AT24C02芯片模块+指纹模块设计而成主要功能:1.本设计基于STC89C52单片机。2.采用AT24C02芯片可以实现存储的密码掉电保存。密码为6位,可以随意更改,更改时要输入两遍确认;3.采用矩阵按键输入、12864液晶显示、继电器模拟开锁,有开锁指示灯。继电器有常开常闭触点可外接电磁锁等负载;4.有管理员密码,即使忘记密码也不怕,可以找回;5.两种开锁方式:指纹开锁(指纹模块)和密码进入管理员模式开锁(键盘模块)。
上传时间: 2022-07-03
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功能简要说明:输出:正弦波频率:可调;幅值:可调;逆变原理:51单片机SPWM驱动H桥+后级滤波;调节方式:频率加按键、频率减按键、幅值加按键、幅值减按键;频率调节范围:10hz、20hz、30hz、40hz、50hz、60hz、70hz、80hz、100hz;幅值调节范围:0%,10%,20%,30%,40%,50%,60%,70%,80%,90%,100%;(输出峰值占输入电压百分比)输出最大电流:2A;过流打嗝保护: 过流保护值2A,过流时切断,5秒后尝试恢复输出;输入电压范围: DC(直流)5V-40V;输出交流电压范围: ±5V-±40V;
上传时间: 2022-07-03
上传用户:aben
目录1 绪论1.1 信号1.2 信号的频谱1.3 模拟信号和数字信号1.4 放大电路模型1.5 放大电路的主要性能指标小结习题……
标签: 电子技术基础
上传时间: 2022-07-04
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LearningGUI的特点和优势。LearningGUI被设计成独立于具体的硬件平台和具体的软件平台,是一款通用的嵌入式开源GUI系统。它100%使用C语言开发,无浮点运算,只调用C,无汇编代码。显示,键盘,鼠标等驱动由用户在应用中编写注册,因此,LearningGUI的通用性,可移植性非常好!它可以裸奔,也可以在RTOS 上运行,同时更适合在Linux下运行。LearningGUI高度可裁剪,可配置,库大小从20多K到200多K。占用内存小。Basic版实行静态内存管理,占用10多K RAM. Windows版实行动态内存管理,占用内存与建立控件多少相关。支持内置GB2312—80标准汉字库。提供开放式字库访问接口。提供开放式颜色转换接口。提供消息驱动机制。提供类似于Win32 SDK式样的API接口。开发LearningGUI的目的是替代emWin,同时抢占中低端的QT市场。该教程是基于SWM320单片机下移植learningGUI的教程,详细描述了移植过程。适用于想学习learningGUI的爱好者,其它单片机也可以使用这样的方法进行移植,里面讲述了配置文件的使用方法,希望这个教程能对该GUI的爱好者有所帮助。
标签: swm320 learninggui 移植
上传时间: 2022-07-06
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霸天虎核心板原理图 和pcb图可以拓展开发F407“霸天虎”开发板说明(底板+核心板设计)1、“挑战者”STM32F407ZGT6由底板+核心板构成,为全新的设计方式,底板与核心板通过2.54间距的排针连接。2、底板+核心板的好处是底板板载资源丰富,可以学习到很多外扩知识,而且模块集成度高,对于做产品有很好的设计参考价值,对于学习也非常有意义。另外就是不用再单独购买核心板,拆下来使用即可,对于学习和DIY,都非常好。3、核心板有两排2X28的排针,共112个引脚,其中GPOIO为92个,电源和GND15个,排针间距:2.54mm,学完开发板的实验,把核心板拆下来,用杜邦线连接到外围即可做实验,非常适合DIY,可以达到学习和创作两不误。
标签: 野火F429
上传时间: 2022-07-07
上传用户:wangshoupeng199
STM32 HAL固件库是Hardware Abstraction Layer的缩写,中文名称是:硬件抽象层。HAL库是ST公司为STM32的MCU最新推出的抽象层嵌入式软件,为更方便的实现跨STM32产品的最大可移植性。HAL库的推出,可以说ST也慢慢的抛弃了原来的标准固件库,这也使得很多老用户不满。但是HAL库推出的同时,也加入了很多第三方的中间件,有RTOS,USB,TCP / IP和图形等等。和标准库对比起来,STM32的HAL库更加的抽象,ST最终的目的是要实现在STM32系列MCU之间无缝移植,甚至在其他MCU也能实现快速移植。
上传时间: 2022-07-08
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PrefaceDuring the past years, there has been a quickly rising interest in radio access technologies for providingmobile as well as nomadic and fixed services for voice, video, and data. The difference indesign, implementation, and use between telecom and datacom technologies is also becoming moreblurred. One example is cellular technologies from the telecom world being used for broadband dataand wireless LAN from the datacom world being used for voice-over IP.Today, the most widespread radio access technology for mobile communication is digital cellular,with the number of users passing 5 billion by 2010, which is more than half of the world’s population.It has emerged from early deployments of an expensive voice service for a few car-borne users,to today’s widespread use of mobile-communication devices that provide a range of mobile servicesand often include camera, MP3 player, and PDA functions. With this widespread use and increasinginterest in mobile communication, a continuing evolution ahead is foreseen.This book describes LTE, developed in 3GPP (Third Generation Partnership Project) and providingtrue 4G broadband mobile access, starting from the first version in release 8 and through the continuingevolution to release 10, the latest version of LTE. Release 10, also known as LTE-Advanced,is of particular interest as it is the major technology approved by the ITU as fulfilling the IMTAdvancedrequirements. The description in this book is based on LTE release 10 and thus provides acomplete description of the LTE-Advanced radio access from the Bottom up.Chapter 1 gives the background to LTE and its evolution, looking also at the different standardsbodies and organizations involved in the process of defining 4G. It also gives a discussion of the reasonsand driving forces behind the evolution.Chapters 2–6 provide a deeper insight into some of the technologies that are part of LTE and itsevolution. Because of its generic nature, these chapters can be used as a background not only for LTEas described in this book, but also for readers who want to understand the technology behind othersystems, such as WCDMA/HSPA, WiMAX, and CDMA2000.Chapters 7–17 constitute the main part of the book. As a start, an introductory technical overviewof LTE is given, where the most important technology components are introduced based onthe generic technologies described in previous chapters. The following chapters provide a detaileddescription of the protocol structure, the downlink and uplink transmission schemes, and the associatedmechanisms for scheduling, retransmission and interference handling. Broadcast operation andrelaying are also described. This is followed by a discussion of the spectrum flexibility and the associated
上传时间: 2022-07-08
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霍尔传感器应用于无刷电机驱动控制:讨论了利用霍尔元件在无刷电机控制系统中使用的问题,并对霍尔集成传感器进行了探讨。介绍了2种利用霍尔集成传感器组成无刷电机控制电路的方法。
上传时间: 2022-07-09
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HX70A 是一款单节锂电池电量指示芯片,该芯片采用 CMOS 工艺实现,体积小,便于便携式产品安装。HX70A内置比较器和反馈回路,实现4个电压点的检测。 通过内部修调技术,可以保证电压检测精度达 到±1%。输出 采用OPENDRAIN 结构,便于客户使用IO 口 或者LED 指示。
上传时间: 2022-07-11
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