随着光伏发电系统快速发展,以及电动汽车充电桩的普及,传统的剩余电流保护器无法满足实际需求。介绍了一款B型剩余电流保护器,采用磁调制剩余电流互感器和零序电流互感器采集剩余电流。根据GB/T 22794—2017标准要求,可识别1 kHz及以下的正弦交流、带和不带直流分量的脉动直流、平滑直流等剩余电流信号。经信号调理电路将电压信号送到单片机进行采集和判断。通过试验测试,该样机在测试精度和速度上均符合国家标准的相关要求。The rapid development of photovoltaic power generation systems and the popularity of electric vehicle charging piles make the traditional residual current protective devices unable to meet the actual demand.This paper proposed a type B residual current protective device,which uses the magnetically modulated residual current transformer and the zero sequence current transformer to acquire the residual current.According to the requirements of GB/T 22794—2017,the type B residual current protective device can detect sinusoidal AC residual current of 1kHz and below 1kHz,pulsating DC residual current with and without DC component,smooth DC residual current and so on.The signal processing circuit sends the voltage signal to the MCU for acquisition and judgment.Through experimental tests,the device meets the relevant requirements of national standards in terms of test accuracy and speed.
标签: 电流保护器
上传时间: 2022-03-27
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在半导体制冷技术的工作性能及其优缺点研究的基础上,设计了以单片机为核心控制元件,以TEC1-12706为执行元件的半导体制冷温度控制系统。采用高精度分段式PID控制算法配合PWM输出控制的方法实现温度控制;选择数字传感器DS18B20为温度检测元件,还包含1602液晶显示模块、按键调整输入模块和H桥驱动模块等。实际测试表明,该系统结构简单易行,操作方便,工作性能优良,同时针对该系统专门设计的温控算法,使半导体制冷器能更好地适应不同工况而充分发挥其制冷制热工作特性。Based on the study of the performance and advantages and disadvantages of thermoelectric cooler(TEC)technology,a thermoelectric cooling temperature control system with single-chip microcomputer as the core control element and TEC1-12706 as the executive element was designed. High precision piecewise PID control algorithm combined with PWM output control method is adopted to realize temperature control. The digital sensor DS18B20 is selected as the temperature detection element. It also includes 1602 LCD module,key adjustment input module and H bridge drive module. The actual test shows that the system has simple structure,convenient operation and excellent performance. Meanwhile,the temperature control algorithm specially designed for the system can make the semiconductor cooler better adapt to different working conditions and give full play to its refrigeration and heating characteristics.
上传时间: 2022-03-27
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随着科技发展及工业4.0 进程推进,机械臂应用范围越来越广,并演化出各种各样的机械臂,如码垛机械臂、焊接机械臂、装配机械臂以及手术机械臂等。现利用solidworks 进行三维建模,设计制作一款基于stm32f103c8t6 单片机的主从式桌面级机械臂,该机械臂包括一个主动机械臂和一个从动机械臂,采用蓝牙传输信号方式进行同步运动,并且详细介绍了该机械臂材料选择、结构设计、工作原理、组成部分和设计特点。With the development of science and technology and the advancement of Industry 4.0, the application range of the mechanical arm has become wider and wider, and various types of mechanical arms, such as palletizing robot arms, welding robot arms, assembly robot arms, and surgical robot arms, have been developed. Now using solidworks for 3D modeling, design and manufacture a master-slave desktop-level robot arm based on stm32f103c8t6 single-chip microcomputer. The robot arm includes an active robot arm and a slave robot arm, which uses Bluetooth to transmit signals for synchronous motion. The material selection, structural design, working principle, components and design features of the manipulator are introduced.
标签: stm32f103c8t6 单片机
上传时间: 2022-03-27
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ABB机器人编程手册.pdfAliasIO is used to define a signal of any type with an alias name or to use signals in builtin task modules. Signals with alias names can be used for predefined generic programs, without any modification of the program before running in different robot installations. The instruction AliasIO must be run before any use of the actual signal. See Basic examples on page 21 for loaded modules, and More examples on page 22 for installed modules.
上传时间: 2022-03-28
上传用户:kingwide
学习本章要达到的目标:口1.理解 Linux内核编译选项的含义口2.学会根据不同的硬件配置裁减定制内核;口3.理解内核编译过程中每一步的功能,并编译 Linux2.630内核。需要去重新编译 Linux内核口增加操作系统对新的硬件设备的支持口增加内核新的功能口对内核代码或内核配置进行优化时Prompt for development and/or incomplete code/drivers口显示处于开发调试中或尚未完善的代码或驱口选中:如果是测试人员或者开发者;口不选:其他情况Local version append to kerne release口追加本地版本号口使用命令“uname-a”进行查看。POSIX Message Queues口 POSIX消息队列的支持,这是 POSIX进程间通信的一部分BSD Process Accounting口将进程的统计信息写入文件口信息通常包括建立时间、所有者、命令名称、内存使用、控制终端等,这个选项一般是选择的。Enable loadable module support口使能可加载模块支持口如果使能此选项则可以通过"makemodules_insta"把内核模块安装在/lib/modules/中Kernel support for ELF binaries口内核对ELF文件格式的支持口ELF是开放平台下最常用的二进制文件格式支持动态连接,支持不同的硬件平台Kernel support for a out and ECOFF binaries口早期UNIX系统的可执行文件格式,目前已经被ELF格式取代Unix domain sockets口本机高效率的 Socket口仅能运行在本机上的高效率的 Socket,简称 Unix socket。口很多进程使用为这种机制在操作系统内部进行进程间通信,例如 X Window和 syslog等TCP/IP networking口TcP/IP网络协议的支持
标签: linux
上传时间: 2022-03-29
上传用户:kingwide
在内核编译中如何将各个目录树中的文件组织起来编译是一个很重要的问题,并且要根据用户配置来编译特有的内核。为了解决这个问题,内核使用两种文件,Makefile和 Kconfig。分布到各目录的 Kconfig构成了个分布式的内核配置数据库,每个 Kconfig分别描述了所属目录源文档相关的内核配置菜单,就是我们使用命令 make menuconfig(或者 xconfig)后产生的配置菜单,此菜单包含多层,每个层次都是由各个目录中的Kconfig产生的。用户根据需求来选择如何编译内核,然后将配置结果保存到 config中,然后执行 Makefile时就会根据 onfig的结果来实现内核的编译。这个过程是由 kbuild系统来完成的,Linux编译系统会两次扫描 Linux的 Makefile:首先编译系统会读取 Linux内核顶层的 Makefile,然后根据读到的内容第二次读取 Kbuild的 Makefile来编译 Linux内核。内核编译系统或者说 kbuild,是一种在编译內核时,可以对内核配置选项进行选择的机制。2.6内核树中已经更新了这种机制,新版本的 kbuild不仅高速而且备有更完善的文档。Kbuild机制完全依赖于源代码的层次结构。Kconfig的作用就是为了让用户配置内核,在Kconfig中定义了一些变量,用户通过设置变量的值来选择如何个性化自己的系统內核。定义的变量将在每个菜单都有一个关键字标识,最常见的就是contig
标签: linux
上传时间: 2022-03-30
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第一章移植内核1.Linux内核基础知识在动手进行 Linux内核移植之前,非常有必要对 Linux内核进行一定的了解下面从 Linux内核的版本和分类说起1.L.I Linux版本Linux内核的版本号可以从源代码的顶层目录下的 Makefile中看到,比如2.6.29.1内核的 Makefile中:其中的 VERSION和 PATCHLEVELI组成主版本号,比如24、2.526等,稳定版本的德主版本号用偶数表示(比如26的内核),开发中的版本号用奇数表示(比如25),它是下一个稳定版本内核的前身。SUBLEVEL称为次版本号,它不分奇偶,顺序递增,每隔1-2个月发布一个稳定版本1 EXTRAVERSION称为扩展版本号,它不分奇偶,顺序递增,每周发布几次扩展本版号。1,1,2什么是标准内核按照资料上的习惯说法,标准内核(或称基础内核)就是指主要在htp/www.kernelorg/维护和获取的内核,实际上它也有平台属性的。这些linux内核并不总是适用于所有imux支持的体系结构。实际上,这些内核版本很多时候并不是为一些流行的嵌入式 linux系统开发的,也很少运行于这些嵌入式inux系统上,这个站点上的内核首先确保的是在 InteIX86体系结构上可以正常运行,它是基于X86处理器的内核,如对inux-24l8ab2的配置 make menuconfig时就可以看到,Processor type and features->中只有386、486、586/K5/5x86/6x866x86MX、Pentium-Classic、Pentium-MMX、Pentium-Pro/Celeron/Pentium-ll,Pentium-Ill/Celeron(Coppermine),Pentium-4K6K6-/k6-Ⅲl、Athlon/Duron/K7、Elan,Crusoe,Winchip-C6·winchip-2
标签: linux
上传时间: 2022-04-01
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锂电池BMS管理技术是移动机器人的关键技术,本文设计了基于bq76PL455、STM32F103的锂电池管理系统,实现了电池组电压、电流、过压、过流等状态监测;系统配置均衡电路,电池充电过程中若出现电池单体电压不平衡现象,会触发均衡电路,进而提高电池的安全性,延长使用寿命。Lithium battery BMS management technology is the key technology of mobile robot.The lithium battery management system based on bq76PL455 and STM32F103 is proposed to realize the monitoring of battery pack voltage,current,overvoltage and overcurrent.The system is equipped with equalization circuit.When the battery cell voltage imbalance occurs,the equalization circuit is triggered to improve the safety and service life of the battery.
上传时间: 2022-04-02
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随着电磁阀在工业和日常应用的增多,其功耗越来越被人们所重视。通过对电磁阀驱动电路的研究,设计一套电磁阀节能驱动电路。不仅提高了电磁阀的响应时间,更重要的是降低了功耗,使电磁阀由工作在大电流状态下,变成大电流启动小电流维持的工作状态。减少了由电流过大引起的电磁阀线圈过热,增加了电磁阀的安全性。The power consumption of an electromagnetic valve is drawing increasingly more attentiori as it is widely used in industrial production and daily life. In this study, an energy - saving driving circuit of electromagnetic valves was designed. It can make an electromagnetic valve to start with a high current while work with a low current; thereby the power consumption can be reduced. Besides, it can shorten the response time of an electromagnetic valve and improve the security of the valve.
上传时间: 2022-04-16
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INTERNATIONAL STANDARD NORME INTERNATIONALEPart 4-2: Testing and measurement techniques – Electrostatic discharge immunity test.About the IEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards for all electrical, electronic and related technologies.About IEC publications The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the latest edition, a corrigenda or an amendment might have been published.
标签: IEC
上传时间: 2022-04-19
上传用户:fliang