<div class="document"> <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"><span style="color:#333333;font-size:14px;">该基于N32G430C8L7+INA199制作的USB电流表，最高支持20V的快充协议，长时间工作不发热。</span></div> <div class="document"><span style="color:#333333;font-size:14px;">项目设计参考了：<a href="/limengmeng12345/ji-chu-ying-usb-dian-ya-biao#P1" target="_blank">【训练营官方案例】USB电流表 - 嘉立创EDA开源硬件平台 (oshwhub.com)</a></span></div> <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;"> </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、项目内容</h3> <hr class="horizontal-splitline normal-bold-2"><ul><li 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:#000000;font-size:14px;">自带0.91寸OLED支持，直观显示充电功率</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" style="line-height:1.8;"><span style="color:#000000;font-size:14px;">最大支持20V的快充协议</span></li> </ul><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:#000000;"> </span></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、硬件部分</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;"><span style="color:#000000;font-size:14px;">PCB使用嘉立创EDA设计</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:#000000;font-size:14px;">电流采样使用的TI的INA199电流传感放大器，采样方式为低边采样</span></p> <p><span style="color:#000000;font-size:14px;">电压采样部分由两颗电阻构成的串联分压电路</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;">4、软件部分</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;"> 使用Keil v5开发，项目代码基于参照工程进行修改，支持8Mhz外接晶振。</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;">5、实物验证</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/HqD6Xn6YoRqrm3JcyPkx81WjcSq7cJwaghmY4xwn.png" alt="" width="1200" height="720"></p> <p style="line-height:1.8;"><img src="//image.lceda.cn/pullimage/Bp6WKoebKWqfCOFcDu4m3nbK0KM4u6OmrcmxNYBI.jpeg" alt="" width="1200" height="720"></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;"> </p> </div>