<div class="document"> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">注：* 为必填项</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><strong><span style="color: #0093e6;">请在报名阶段填写 ↓</span></strong></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">* 1、项目功能介绍</h3> <hr class="horizontal-splitline normal-bold-2"> <p><span style="font-size: 24px;"><strong><span style="font-family: 宋体;">本项目产品</span><span style="font-family: sans-serif;">USB2.0</span><span style="font-family: 宋体;">集线器使用</span><span style="font-family: sans-serif;">SL2.1A</span><span style="font-family: 宋体;">芯片作为主控，由</span><span style="font-family: sans-serif;">1</span><span style="font-family: 宋体;">个</span><span style="font-family: sans-serif;">USB端口</span><span style="font-family: 宋体;">总线扩展出</span><span style="font-family: sans-serif;">4</span><span style="font-family: 宋体;">个</span><span style="font-family: sans-serif;">USB</span><span style="font-family: 宋体;">端口，主要用于解决日常</span><span style="font-family: 宋体;">生活</span><span style="font-family: 宋体;">中电子数码产品设备</span><span style="font-family: sans-serif;">USB</span></strong><span style="font-family: 宋体;"><strong>端口资源紧缺的问题场景。</strong>传输速率支持</span>USB2.0 <span style="font-family: 宋体;">高速</span>(480MHz),USB2.0 <span style="font-family: 宋体;">全速</span>(12MHz),<span style="font-family: 宋体;">和低速模式</span>(1.5MHz)</span></p> <p><span style="font-family: 宋体; font-size: 18px;">项目产品特点：</span></p> <p><span style="font-size: 18px;">1、<span style="font-family: 宋体;">具有</span><span style="font-family: sans-serif;">4</span><span style="font-family: 宋体;">个独立的输出短路保护功能，任何一个或多个</span><span style="font-family: sans-serif;">USB</span><span style="font-family: 宋体;">端口发生短路时不影响其他正常使用的</span><span style="font-family: sans-serif;">USB</span><span style="font-family: 宋体;">端口。</span></span></p> <p><span style="font-size: 18px;">2、<span style="font-family: 宋体;">支持外部电源供电，当</span><span style="font-family: sans-serif;">USB</span><span style="font-family: 宋体;">总线供电不足时，接入外部电源即可自动切换为外部电源供电。</span></span></p> <p><span style="font-size: 18px;">3、<span style="font-family: 宋体;">无需安装驱动，支持热插拔，即插即用。</span></span></p> <p><span style="font-size: 18px;">4、<span style="font-family: sans-serif;">USB</span><span style="font-family: 宋体;">总线接口和外部电源供电接口均使用</span><span style="font-family: sans-serif;">TYPE-C</span><span style="font-family: 宋体;">接口，支持正反插。</span></span></p> <p><span style="font-size: 18px;">5、<span style="font-family: 宋体;">硬件成本低。</span></span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><span style="color: #95a5a6; font-size: 14px;">注：主题不限，可以是解决生活/工作中的某个问题、为某个人群/场景设计的方案、毕业设计/课程设计/DIY项目/纯属炫酷项目等。主要讲一下自己通过什么手段解决了什么问题。</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">*2、项目属性</h3> <hr class="horizontal-splitline normal-bold-2"> <p><span style="font-size: 24px;"><span style="font-family: 宋体;">项目产品为原创</span></span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><span style="color: #95a5a6; font-size: 14px;">注：请说明项目是否首次公开；项目是否为原创；项目是否曾经在其他比赛中获奖，若有获奖则叙述获奖详情；项目是否在学校参加过答辩。</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">* 3、开源协议</h3> <hr class="horizontal-splitline normal-bold-2"> <p><span style="font-size: 24px;"><span style="font-family: sans-serif;">GPL3.0</span><span style="font-family: 宋体;">开源协议</span></span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><span style="color: #95a5a6; font-size: 14px;">注：利他即利己，请认真阅读下述内容。</span></p> <ol style="line-height: 1.8;"> <li class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt pap-hanging-indent-1.6em" style="line-height: 1.8;"><span style="color: #95a5a6; font-size: 14px;">拥抱开源，赋予项目无限价值。建议项目核心功能开源80%以上；</span></li> <li class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt pap-hanging-indent-1.6em" style="line-height: 1.8;"><span style="color: #95a5a6; font-size: 14px;">若某一部分功能不可替代且删掉之后项目无法解决对应的问题，则这一部分实现的功能就是项目的核心功能；比如设计了一台电子负载且设计了一款上位机软件监控功率变化，则电子负载为核心功能，上位机软件为辅助功能；比如电子负载中使用了一款隔离485模块与上位机通信，则此485模块实现的通讯功能为辅助功能；</span></li> <li class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt pap-hanging-indent-1.6em" style="line-height: 1.8;"><span style="color: #95a5a6; font-size: 14px;">项目应选择适合自己的<span style="text-decoration: underline;"><a href="/posts/98fdb2accd754af7b51990790db3b47a" target="_blank">开源协议</a></span>，若项目引用其他开源项目，应注明来源并遵循原作者的开源协议规定；原创项目推荐使用GPL3.0开源协议；</span></li> <li class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt pap-hanging-indent-1.6em" style="line-height: 1.8;"><span style="color: #95a5a6; font-size: 14px;">直接引用开源项目的原电路或原代码实现的功能不可作为自己项目的核心功能、使用市场上通用模块直接实现的功能不可作为自己项目的核心功能。</span></li> </ol> <p style="line-height: 1.8;"> </p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><strong><span style="color: #0093e6;">请在竞赛阶段填写 ↓</span></strong></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">*4、硬件部分</h3> <hr class="horizontal-splitline normal-bold-2"> <p><span style="font-size: 18px;"><span style="font-family: 宋体;">硬件部分根据</span><span style="font-family: sans-serif;">SL2.1A</span><span style="font-family: 宋体;">芯片数据手册中给出的应用电路参考图(如图1所示)</span><span style="font-family: 宋体;">进行改进，在这基础上增加输出短路保护和外部电源供电的功能。</span></span></p> <p><span style="font-size: 18px;"><span style="font-family: 宋体;"><img src="//image.lceda.cn/pullimage/kkh9rS8FoilUxP9WHWvptLitIdcIPRqOieMWH7PU.jpeg" alt="" width="658" height="437"></span></span></p> <p><span style="font-size: 18px;"><span style="font-family: 宋体;"> <span style="font-size: 24px;">             <span style="font-size: 18px;">图1 <span style="font-family: sans-serif;">SL2.1A应用电路参考图</span></span></span></span></span></p> <p> </p> <p><span style="font-size: 18px;"><span style="font-family: 宋体;">输出短路保护由限流芯片</span><span style="font-family: sans-serif;">MT9700</span><span style="font-family: 宋体;">来实现(如图2所示)，</span><span style="font-family: sans-serif;">MT9700</span><span style="font-family: 宋体;">可通过</span><span style="font-family: sans-serif;">IPADJ</span><span style="font-family: 宋体;">引脚连接的下拉电阻设置最大输出电流(如图3所示)，当输出端发生短路时，输出电流急剧增大并超过设置的最大输出电流，</span><span style="font-family: sans-serif;">MT9700</span><span style="font-family: 宋体;">自动关闭输出，从而保护负载和前端设备不受影响。</span></span></p> <p><span style="font-family: 宋体;"><img src="//image.lceda.cn/pullimage/6Rz4Zu0NxUfxvEMFE7QrmVMd66PIjPvOl3mSJdGJ.png" width="540" height="280"></span></p> <p><span style="font-size: 18px;"><span style="font-family: 宋体;">              <span style="font-size: 24px;">图2 USB端口输出短路保护电路</span></span></span></p> <p> </p> <p> </p> <p><span style="font-family: 宋体;"><img src="//image.lceda.cn/pullimage/mNY28xAksXYfxcHKwl2kypMWBuEXMLATTH11Ix3T.png"></span></p> <p><span style="font-size: 18px;"><span style="font-family: 宋体;">             <span style="font-size: 18px;"> 图3 <span style="font-family: sans-serif;">MT9700</span>设置最大输出电流</span></span></span></p> <p> </p> <p><span style="font-size: 18px;"><span style="font-family: 宋体;">外部电源供电采用</span><span style="font-family: sans-serif;">NMOS</span><span style="font-family: 宋体;">管</span><span style="font-family: sans-serif;">A03400</span><span style="font-family: 宋体;">和</span><span style="font-family: sans-serif;">PMOS</span><span style="font-family: 宋体;">管</span><span style="font-family: sans-serif;">A03401</span><span style="font-family: 宋体;">的开关特性来实现</span><span style="font-family: 宋体;">自动切换外部电源(如图4所示)。</span></span></p> <p><span style="font-family: 宋体;"><img src="//image.lceda.cn/pullimage/RM0L6OL1ri45dcmAU4gkA93cBg0c8t7ZRxqyoHA7.png" width="475" height="297"></span></p> <p><span style="font-size: 18px;"><span style="font-family: 宋体;">             <span style="font-size: 24px;"> 图4 外部电源切换电路</span></span></span></p> <p> </p> <p><span style="font-size: 24px;"><span style="font-family: 宋体;">项目产品</span><span style="font-family: sans-serif;">USB2.0</span><span style="font-family: 宋体;">集线器PCB3D图&3D外壳预览图</span></span></p> <p><span style="font-size: 18px;"><span style="font-family: 宋体;"><span style="font-size: 24px;"><img src="//image.lceda.cn/pullimage/GJC2BY6PHcl5LkpKOVjKR6DaPtsG9jjE8bckwlVB.png" alt="" width="698" height="393"></span></span></span></p> <p><span style="font-size: 18px;"><span style="font-family: 宋体;"><span style="font-size: 24px;"><img src="//image.lceda.cn/pullimage/y1LjUnIzAvDQrID5N1Jpf1PrpqroTiElqJuVlifv.png" alt="" width="699" height="374"></span></span></span></p> <p> </p> <p><span style="font-size: 18px;"><span style="font-family: 宋体;"><span style="font-size: 24px;">项目产品<span style="font-family: sans-serif;">USB2.0</span>集线器PCB正反面实物图&3D外壳正反面实物图</span></span></span></p> <p><span style="font-size: 18px;"><span style="font-family: 宋体;"><span style="font-size: 24px;"><img src="//image.lceda.cn/pullimage/Y43FzWCq592qczf7UOFN0YwNq45Gh1ET2br1Iid4.jpeg" alt="" width="701" height="379"></span></span></span></p> <p> </p> <p><span style="font-size: 18px;"><span style="font-family: 宋体;"><span style="font-size: 24px;"><img src="//image.lceda.cn/pullimage/WQl2p6zzFDkZuGW8KpTkuXnPne9Yivm1QMQaEqmt.jpeg" alt="" width="707" height="707"></span></span></span></p> <p> </p> <p><span style="font-size: 18px;"><span style="font-family: 宋体;"><span style="font-size: 24px;">项目产品<span style="font-family: sans-serif;">USB2.0</span>集线器三视图</span></span></span></p> <p><span style="font-size: 18px;"><span style="font-family: 宋体;"><span style="font-size: 24px;"><img src="//image.lceda.cn/pullimage/XgoqLSQrw9fX12gEqrBjzXZ9N78pntIdMZnkHL4y.jpeg" alt="" width="716" height="405"></span></span></span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><span style="color: #95a5a6; font-size: 14px;">注：推荐使用<span style="text-decoration: underline;"><a href="https://lceda.cn/editor" target="_blank">嘉立创EDA</a></span>。若选择其他EDA工具，请在附件上传PDF格式的原理图，PDF格式的PCB图纸，Gerber格式的PCB文件。这里可以详细说明您的项目实现原理和机制、注意事项、调试方法、测试方法等。推荐图文并茂的形式向别人介绍您的想法。</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt pap-left-indent-1.6em" style="line-height: 1.8;"> </p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">*5、软件部分</h3> <hr class="horizontal-splitline normal-bold-2"> <p><span style="font-size: 24px;"><span style="font-family: 宋体;">软件部分采用立创</span><span style="font-family: sans-serif;">EDA</span><span style="font-family: 宋体;">专业版进行</span><span style="font-family: sans-serif;">PCB</span><span style="font-family: 宋体;">设计和</span><span style="font-family: sans-serif;">3D</span><span style="font-family: 宋体;">外壳设计。</span></span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><img src="//image.lceda.cn/pullimage/hETVgfITzCnj0n163tKtH6aQeFo3pUEcN7t1wBLE.png" alt="" width="719" height="362"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><span style="color: #95a5a6; font-size: 14px;">注：若您的项目涉及软件开发，请在附件上传对应的工程源码。这里可以详细说明您的软件流程图、功能模块框图、相关算法的解释或科普、源码结构、编译环境的搭建和配置、源码编译方法、程序烧录方法等。推荐图文并茂的形式向别人介绍您的想法。</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt pap-left-indent-1.6em" style="line-height: 1.8;"> </p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">*6、BOM清单</h3> <hr class="horizontal-splitline normal-bold-2"> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><img src="//image.lceda.cn/pullimage/kNC9Rpo0VpLfXqhFLFedqQkgx2fu0eQDJsqCkakg.png" alt="" width="721" height="246"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><span style="color: #95a5a6; font-size: 14px;">注：项目涉及的BOM清单。这个位置请上传BOM的截图。清单详情请以PDF的格式上传到附件中。建议包括型号、品牌、名称、封装、采购渠道、用途等内容。具体内容和形式应以表达清楚项目构成为准。</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">*7、大赛LOGO验证</h3> <hr class="horizontal-splitline normal-bold-2"> <p style="line-height: 1.8;"><span style="font-size: 18px;"><span style="font-family: 宋体;">项目产品</span><span style="font-family: sans-serif;">USB2.0</span><span style="font-family: 宋体;">集线器PCB立创LOGO标识</span></span></p> <p style="line-height: 1.8;"><img src="//image.lceda.cn/pullimage/5xRtOSN2Ka9yjrBvEwDte0YsPH3xO7Kbi2DfMOGl.jpeg" alt="" width="624" height="338"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><span style="color: #95a5a6; font-size: 14px;">请上传包含大赛logo的项目图片，logo以丝印形式印刷在PCB上面。</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><span style="color: #95a5a6; font-size: 14px;">点击zip下载大赛logo标识！ <span style="text-decoration: underline;"><a href="https://image.lceda.cn/easyedaResource/images/%E7%AB%8B%E5%88%9B%E7%94%B5%E8%B5%9B%E6%A0%87%E8%AF%86.rar" target="_blank">（大赛标识）.zip</a></span></span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">* 8、演示您的项目并录制成视频上传</h3> <hr class="horizontal-splitline normal-bold-2"> <p style="line-height: 1.8;"> </p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><span style="color: #95a5a6; font-size: 14px;">视频要求：请横屏拍摄，分辨率不低于1280×720，格式Mp4/Mov，单个视频大小限100M内；</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><span style="color: #95a5a6; font-size: 14px;">视频标题：立创电赛：{项目名称}-{视频模块名称}；如立创电赛：《自动驾驶》-团队介绍。</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><span style="font-size: 14px;">更多详情：<a href="/posts/06c94d90c2c447dfbd9ed7339ff4a5b1" target="_blank">https://diy.szlcsc.com/posts/d76d9cb41705430e9a54e7a5feed07a5</a></span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> </div>