<div class="document"> </div> <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"><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;">基于N32G430C8L7+INA199制作的USB功率计，精度1%，可以查看USB工作时候的电流，支持4V-24V版本。</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 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;">参考自国民科技训练营官方案例，外行非专业人士，尝试复刻一下。</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 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;">GPL 3.0</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;">*4、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;">N32G430C8L7为主控，ADC采样INA199输出计算电流，ADC采样分压电阻之间的电压计算电压值，由I2C输出到0.91寸OLED屏中显示</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 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"><span style="color:#000000;font-size:14px;">原理图及PCB由lceda专业版全在线版绘制；代码部分由keil5编写，代码参考了官方案例例程。</span> <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;">*6、大赛LOGO验证</h3> <p><img src="//image.lceda.cn/pullimage/lAt1M2gpE6zgweS4KgDn2ZAayq6xwpwTl3mxDQB0.jpeg" alt="大赛logo验证" width="1200" height="1063"></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、实物验证</h3> <p>退回理由：以下不是实物图。</p> <p><img src="//image.lceda.cn/pullimage/gGT2kiQcHuBDICZwVWyd29tgrBNI9sCdNpCfMCRy.jpeg" alt="" width="1200" height="725"></p> <p><img src="//image.lceda.cn/pullimage/4jjPaa8ZujSpQmqXeykBbZLIkM4RJV5KVwAXw2mC.jpeg" alt="" width="1200" height="775"></p> <p><img src="//image.lceda.cn/pullimage/2YSfh5TlP9c8sxvY8RCpboiQZcCwr2WxCnp4XW2K.jpeg" alt="" width="1200" height="738"></p> <p><img src="//image.lceda.cn/pullimage/HUKHyseOlKsOCmx7fnBoeRtKPhWUoph84UhCqR3u.jpeg" alt="" width="1200" height="1200"></p> <p><img src="//image.lceda.cn/pullimage/PUDxWaRfYjwE11HjcAvIEkNQpTE19GyMhcSCijD4.jpeg" alt="" width="1200" height="936"></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、遇到的问题</h3> <p>1.电源地走线只有10mil，需要加宽重新打板；</p> <p>2.USB公头和母头外壳固定接了地，需要断开与地的连接，因为部分厂商喜欢用外壳做第三方协议或者用外壳过大电流，断开以防止影响测试精度，这里看到我是直接打磨了；</p> <p>3.DCDC部分输出电压比较低，需要排查问题；</p> </div>