<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;">        使用纽扣电池的蓝牙温湿度传感器，可感应周围空气的温度和湿度，并通过蓝牙广播出来，便于用户查看当前环境的温湿度</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;">        项目为首次公开，原创设计</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: #95a5a6;"><span style="font-size: 14px;"><span style="font-size: 16px;"><span style="color: #95a5a6;">        </span></span><span style="font-size: 16px; color: #000000;">基于 GPL3.0 协议开源</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;"> </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;">        本项目硬件设计使用立创EDA（专业版）。项目采用的物料成本低廉采购方便，一个蓝牙温湿度传感器的物料成本约为10元左右。</p> <p>  1.  主控芯片：沁恒CH582F，芯片详情可查看<a href="https://www.wch.cn/products/CH583.html" target="_blank">沁恒CH583系列官方介绍</a>，在本项目中使用到的功能：</p> <ul> <li>32位RISC处理器青稞V4A</li> <li>32KB SRAM，512KB Flash，支持ICP、ISP和IAP</li> <li>内置2.4GHz RF收发器和基带及链路控制，支持BLE5.3</li> <li>提供协议栈和应用层API</li> <li>内置RTC，支持定时和触发两种模式（用于蓝牙、定时任务以及低功耗睡眠）</li> <li>提供8通道12位ADC（使用了一个内置电池电压采样通道）</li> <li>提供4组UART，SPI主从，10路PWM，1路IIC（使用了一组UART作为下载以及调试输出，一路IIC用于和温湿度传感器通讯）</li> <li>最低支持2.3V电源电压，内置 DC-DC 转换，可降低功耗 </li> </ul> <p> </p> <p>  2.  温湿度传感器：奥松AHT20，特点如下：</p> <ul> <li>完全标定</li> <li>数字输出，IIC接口</li> <li>优异的长期稳定性</li> <li>响应迅速、抗干扰能力强</li> <li>宽电压支持</li> </ul> <p> </p> <p>  3.  电源方案：采用CR2032纽扣电池直接供电。</p> <p> </p> <p>  4.  原理图和PCB：</p> <p><img src="//image.lceda.cn/pullimage/veGtsazZsUluGiUAydA7nntrCg08kLwXXzcE928N.png" alt="原理图" width="1190" height="845"><img src="//image.lceda.cn/pullimage/2Ua2DV7YUpsZNHnJzXu4AF3iJZmWjZXDnzc3hsN2.png" alt="PCB" width="504" height="470"></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 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;">        提供一个简易的蓝牙广播DEMO，可在手机上使用nRF Connect、BLE调试助手等蓝牙调试助手查看广播包信息，广播的设备名称便是检测到的电池电压、温度以及湿度。开发时使用的IDE为<a href="http://www.mounriver.com/" target="_blank">MounRiver Studio</a>，下载工具为<a href="https://www.wch.cn/download/WCHISPTool_Setup_exe.html" target="_blank">WCHISPTool</a>，源码和已编译好的HEX文件见附件。</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/xKvOcGrkFqcW8ObNcA6x4abCVjrvVfGZk8FIN9c5.jpeg" alt="演示" width="3072" height="4096"></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;">下载步骤：</p> <ol> <li>使用<a href="http://www.mounriver.com/" target="_blank">MounRiver Studio</a>编译附件中的源码，在项目根路径下的obj文件夹中获得HEX文件，或者直接下载附件HEX。</li> <li>准备一个USB转TTL串口模块，TTL电平需要为3.3V，<span style="color: #e03e2d;"><strong>不得为5V电平</strong></span>。将转换模块的TXD连接至本项目的RX，转换模块的RXD连接至本项目的TX，转换模块的3.3V电源连接到本项目电池座的正极，转换模块的GND连接至本项目的G。3.3V电源可采用焊接或者鳄鱼夹连接，其他线路的连接方式可采用焊接，也可采用1.27mm间距的烧录探针或者烧录夹。</li> <li>启动<a href="https://www.wch.cn/download/WCHISPTool_Setup_exe.html" target="_blank">WCHISPTool</a>，MCU系列视图选择低功耗蓝牙系列，配置如下：<img src="//image.lceda.cn/pullimage/3Eukqcho5EXKeClSEEaRaxS5MgXtH3kNZz81bbGp.png" alt="WCHISPTool配置" width="1424" height="862"></li> <li>点击下载，提示等待设备接入：<img src="//image.lceda.cn/pullimage/6VhSd8hmyyaEGfkzacG32ohlVgbfsODux6wgvKCq.png"></li> <li>暂时确保蓝牙温湿度传感器的电源被完全切断（不能通过将USB转TTL串口模块整个拔下来的方式），在恢复供电前确保TXD、RXD连接正确，随后接通3.3V电源，自动开始串口免按键下载。如果芯片上次烧录时未启用串口免按键下载，则本次烧录需要在恢复供电前手动短接BT和G，待供电恢复即可断开。<img src="//image.lceda.cn/pullimage/VEPKjCybfXfmW6569dT4pbVc0Vuji1ocmkRdhwJI.png"></li> </ol> <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"> <table width="1440"> <tr> <td style="width: 37.3375px;" height="19">No.</td> <td style="width: 67.5125px;">Quantity</td> <td style="width: 115.738px;">Comment</td> <td style="width: 82.475px;">Designator</td> <td style="width: 106.537px;">Footprint</td> <td style="width: 49.25px;">Value</td> <td style="width: 100.412px;">Manufacturer Part</td> <td style="width: 100.375px;">Manufacturer</td> <td style="width: 94.3125px;">Supplier Part</td> <td style="width: 66.275px;">Supplier</td> </tr> <tr> <td style="width: 37.45px;" height="19">1</td> <td style="width: 67.6875px;" align="right">1</td> <td style="width: 115.988px;">CR2032-BS-6-1</td> <td style="width: 82.6375px;">B1</td> <td style="width: 106.713px;">BAT-TH_CR2032-BS-6-1</td> <td style="width: 49.325px;"> </td> <td style="width: 100.537px;">CR2032-BS-6-1</td> <td style="width: 100.5px;">Q&J</td> <td style="width: 94.4125px;">C70377</td> <td style="width: 66.4px;">LCSC</td> </tr> <tr> <td style="width: 37.4875px;" height="19">2</td> <td style="width: 67.7375px;" align="right">1</td> <td style="width: 116.075px;">10uF</td> <td style="width: 82.6875px;">C1</td> <td style="width: 106.775px;">C0603</td> <td style="width: 49.35px;">10uF</td> <td style="width: 100.575px;">CL10A106KP8NNNC</td> <td style="width: 100.537px;">SAMSUNG(三星)</td> <td style="width: 94.45px;">C19702</td> <td style="width: 66.475px;">LCSC</td> </tr> <tr> <td style="width: 37.5px;" height="19">3</td> <td style="width: 67.75px;" align="right">3</td> <td style="width: 116.1px;">2.2uF</td> <td style="width: 82.7px;">C2,C5,C6</td> <td style="width: 106.8px;">C0603</td> <td style="width: 49.35px;">2.2uF</td> <td style="width: 100.588px;">CL10A225KO8NNNC</td> <td style="width: 100.537px;">SAMSUNG(三星)</td> <td style="width: 94.4625px;">C23630</td> <td style="width: 66.5375px;">LCSC</td> </tr> <tr> <td style="width: 37.5px;" height="19">4</td> <td style="width: 67.75px;" align="right">1</td> <td style="width: 116.1px;">1uF</td> <td style="width: 82.7px;">C3</td> <td style="width: 106.8px;">C0603</td> <td style="width: 49.35px;">1uF</td> <td style="width: 100.588px;">CL10A105KB8NNNC</td> <td style="width: 100.525px;">SAMSUNG(三星)</td> <td style="width: 94.4625px;">C15849</td> <td style="width: 66.625px;">LCSC</td> </tr> <tr> <td style="width: 37.5px;" height="19">5</td> <td style="width: 67.75px;" align="right">1</td> <td style="width: 116.1px;">100nF</td> <td style="width: 82.7px;">C4</td> <td style="width: 106.8px;">C0603</td> <td style="width: 49.35px;">100nF</td> <td style="width: 100.588px;">CC0603KRX7R9BB104</td> <td style="width: 100.525px;">YAGEO(国巨)</td> <td style="width: 94.4625px;">C14663</td> <td style="width: 66.625px;">LCSC</td> </tr> <tr> <td style="width: 37.5px;" height="19">6</td> <td style="width: 67.75px;" align="right">2</td> <td style="width: 116.1px;">22uF</td> <td style="width: 82.7px;">C7,C8</td> <td style="width: 106.8px;">C0603</td> <td style="width: 49.35px;">22uF</td> <td style="width: 100.588px;">CL10A226MQ8NRNC</td> <td style="width: 100.525px;">SAMSUNG(三星)</td> <td style="width: 94.4625px;">C59461</td> <td style="width: 66.625px;">LCSC</td> </tr> <tr> <td style="width: 37.5px;" height="19">7</td> <td style="width: 67.75px;" align="right">1</td> <td style="width: 116.1px;">10uH</td> <td style="width: 82.7px;">L1</td> <td style="width: 106.8px;">L0805</td> <td style="width: 49.35px;">10uH</td> <td style="width: 100.588px;">CMP201209XD100MT</td> <td style="width: 100.525px;">FH(风华)</td> <td style="width: 94.4625px;">C139245</td> <td style="width: 66.625px;">LCSC</td> </tr> <tr> <td style="width: 37.5px;" height="19">8</td> <td style="width: 67.75px;" align="right">1</td> <td style="width: 116.1px;">330Ω</td> <td style="width: 82.7px;">R1</td> <td style="width: 106.8px;">R0603</td> <td style="width: 49.35px;">330Ω</td> <td style="width: 100.588px;">0603WAF3300T5E</td> <td style="width: 100.525px;">UNI-ROYAL(厚声)</td> <td style="width: 94.4625px;">C23138</td> <td style="width: 66.625px;">LCSC</td> </tr> <tr> <td style="width: 37.5px;" height="19">9</td> <td style="width: 67.75px;" align="right">2</td> <td style="width: 116.1px;">4.7kΩ</td> <td style="width: 82.7px;">R2,R3</td> <td style="width: 106.8px;">R0603</td> <td style="width: 49.35px;">4.7kΩ</td> <td style="width: 100.588px;">0603WAF4701T5E</td> <td style="width: 100.525px;">UNI-ROYAL(厚声)</td> <td style="width: 94.4625px;">C23162</td> <td style="width: 66.625px;">LCSC</td> </tr> <tr> <td style="width: 37.5px;" height="19">10</td> <td style="width: 67.75px;" align="right">1</td> <td style="width: 116.1px;">AHT20</td> <td style="width: 82.7px;">U1</td> <td style="width: 106.8px;">SENSOR-SMD_L3.0-W3.0-P1.00-BR</td> <td style="width: 49.35px;"> </td> <td style="width: 100.588px;">AHT20</td> <td style="width: 100.525px;">广州奥松</td> <td style="width: 94.4625px;">C2757850</td> <td style="width: 66.625px;">LCSC</td> </tr> <tr> <td style="width: 37.5px;" height="19">11</td> <td style="width: 67.75px;" align="right">1</td> <td style="width: 116.1px;">CH582F</td> <td style="width: 82.7px;">U2</td> <td style="width: 106.8px;">QFN-28_L4.0-W4.0-P0.40-BL-EP2.8</td> <td style="width: 49.35px;"> </td> <td style="width: 100.588px;">CH582F</td> <td style="width: 100.525px;">WCH(南京沁恒)</td> <td style="width: 94.4625px;">C3001175</td> <td style="width: 66.625px;">LCSC</td> </tr> <tr> <td style="width: 37.5px;" height="19">12</td> <td style="width: 67.75px;" align="right">1</td> <td style="width: 116.1px;">32MHz</td> <td style="width: 82.7px;">X1</td> <td style="width: 106.8px;">CRYSTAL-SMD_4P-L2.0-W1.6-BL-2</td> <td style="width: 49.35px;">32MHz</td> <td style="width: 100.588px;">XL7EL89COI-111YLC-32M</td> <td style="width: 100.525px;">YXC(扬兴晶振)</td> <td style="width: 94.4625px;">C2965584</td> <td style="width: 66.625px;">LCSC</td> </tr> </table> <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 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/aFSQfJVVMywocDZkuTAbeavlppNJPgrUBhK6OVCx.jpeg" alt="大赛LOGO" width="3072" height="4096"></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;"> </h3>