<p><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> <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 style="font-size: 14px;">&nbsp; &nbsp; &nbsp; &nbsp; 本项目为桌面式温湿度计产品设计，主要功能是检测环境温湿度，并可设置温湿度提示，当环境温湿度超过设定值之后，温湿度计发出提醒。</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: #000000; font-size: 14px;">项目设计思路见图1。</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;"><img src="//image.lceda.cn/pullimage/ueqMZdXuyza0G1M3i54GeRe5nsnvspjc59feYdJ1.png" alt="" width="942" height="1351" /></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; text-align: center;"><span style="color: #000000; font-size: 14px;">图1 桌面式温湿度计整体设计思路</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" style="line-height: 1.8;"><span style="color: #000000; font-size: 14px;">&nbsp; &nbsp; &nbsp; &nbsp; 功能模块主要被分解为温湿度获取、温湿度显示、日期时间显示、电池电量检测、温湿度及电量报警、低功耗模式、温湿度记录共7个模块；下面针对这7个模块分别做简单分析。</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;"><strong><span style="color: #000000; font-size: 14px;">1.1 温湿度获取</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;"><span style="color: #000000;"><span style="font-size: 14px;">&nbsp; &nbsp; &nbsp; &nbsp; 本次项目采用盛思锐的SHT40</span><span style="font-size: 14px;">温湿度传感器，该传感器具有体积小，精度高，接线方便等特点，非常适合本次项目。</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: #000000;"><span style="font-size: 14px;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/qUXfrMe7ifTSAVtRy5a5pGkjHMQp8Ds2pwyqZQxw.png" alt="" /></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; text-align: center;"><span style="color: #000000;"><span style="font-size: 14px;">图2 盛思锐传感器简介</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;"><strong><span style="color: #000000;"><span style="font-size: 14px;">1.2 温湿度显示</span></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;"><span style="color: #000000;"><span style="font-size: 14px;">&nbsp; &nbsp; &nbsp; &nbsp; 本次项目准备采用2种显示方式，1是使用2个三位数码管进行显示，1个显示温度值，另一个显示湿度值，这种显示非常直观。另一种是采用0.96寸的oled显示屏进行显示，一方面是oled显示屏显示的内容相较于数码管更加丰富，另一方面也是为了和按键配合形成人机交互，用于后续的温湿度报警上限设置、日期时间显示、报警信息显示等。</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: #000000;"><span style="font-size: 14px;">&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/nFTbdvjI4ETraBVsomhVpTATtAQ5q0oiRnYzC4cw.png" alt="" /></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; text-align: center;">图3 数码管</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; padding-left: 40px;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/AGwwL3t5mdzG3P8fFcZvKUBYoi7WHOFQHjGeHsyP.png" alt="" width="350" height="283" /></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; padding-left: 40px; text-align: center;">图4 0.96 oled显示屏</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>1.3日期时间显示、电池电量检测</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; padding-left: 40px;">本次项目采用的主控芯片为STM32G030K6T6，可利用该芯片自带的TCR时钟进行日期时间的读取，并通过OLED显示屏进行显示。</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; padding-left: 40px;">本次项目采用2节5#电池串联（串联后电压为3V）为系统供电，通过STM32G030K6T6的ADC检测电池电压，以判断电池的电量。</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>1.4温湿度及电量报警</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; padding-left: 40px;">通过按键和oled显示屏形成的人机交互，使操作者可以输入温度上限、湿度上限以及电量下限，通过与采集到的温度数据、湿度数据以及电池电量进行比较判断，一旦超过设定的报警值，主控控制LED闪烁、蜂鸣器蜂鸣（可在设置中开启或关闭），并在oled显示屏中显示报警的信息。</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>1.5低功耗模式</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; padding-left: 40px;">本项目预计设计3种工作模式：</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; padding-left: 40px;">低功耗模式：不显示信息，系统进入休眠模式。</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; padding-left: 40px;">常规模式：oled显示，数码管不显示。</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; padding-left: 40px;">醒目模式：oled和数码管同时显示。</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>1.6温湿度记录</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; padding-left: 40px;">此功能属于扩展功能，预留AT24C64存储芯片，可设计用来存储每天的温湿度数据，可设置存储的时间及频次，硬件保留，程序视情况进行开发。</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;"><em>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; padding-left: 40px;"><span style="color: #000000; font-size: 14px;">该项目为个人首次公开，原理设计参考立创训练营官方原理图，PCB设计为自主设计，程序部分由立创训练营程序基础上进行调整，以实现自主设计的功能。</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;"></em> 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; padding-left: 40px;"><span style="color: #000000; font-size: 14px;">GPL 3.0</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;">*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;"><strong><span style="color: #000000;"><span style="font-size: 14px;">4.1 电路原理设计</span></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; padding-left: 40px;"><span style="color: #000000;"><span style="font-size: 14px;">硬件部分主要由</span>电源电路、主控电路、晶振电路、温湿度传感器、数码管显示电路、按键电路、LED电路、蜂鸣器驱动电路、OLED显示电路、EPROM驱动电路、<span style="font-size: 14px;">IO接口电路共11部分组成。</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;"><strong><span style="color: #95a5a6; font-size: 14px;"><span style="color: #95a5a6;"><span style="color: #000000;">4.1.1电源电路</span>：</span></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;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/VHu7ZvY8o6N4S2cPyDTYPJB7oQv3jarq4KqtU8UO.png" alt="" /></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; text-align: center;">图5 电源电路</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; padding-left: 40px;">系统主要由2节5号电池串联得到的3V电压进行供电，出来后连接一个场效应管，防止电压反接。在3V和地之间用2个10K的电阻进行分压，用单片机的ADC进行电压采集，以判断电池电量。</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>4.<span style="color: #95a5a6; font-size: 14px;"><span style="color: #95a5a6;"><span style="color: #000000;">1.</span></span></span>2主控电路</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;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/HE0sVnYlk6wGcv6Ml1HpUAfzfAHXmTkZWoKfQdf5.png" alt="" /></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; text-align: center;">图6 主控电路</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; padding-left: 40px;">主控芯片采用STM32G030K6T6，主电源3V过来后用一个磁珠去干扰，然后给单片机供电。</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>4.<span style="color: #95a5a6; font-size: 14px;"><span style="color: #95a5a6;"><span style="color: #000000;">1.</span></span></span>3 晶振电路</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;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/JRciK9p1GKXU6BzQN5UUosL4SBJiUCabkv0JfIOc.png" alt="" /></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; text-align: center;">图7 晶振电路</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; padding-left: 40px;">STM32G030K6T6内部有晶振，但为了获得更准确的时钟信号，外接了1个32.768KHz的晶振。</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;"><strong>4.<span style="color: #95a5a6; font-size: 14px;"><span style="color: #95a5a6;"><span style="color: #000000;">1.</span></span></span>4 <span style="color: #95a5a6;"><span style="color: #000000;">温湿度传感器</span>、</span>OLED显示电路、EPROM驱动电路</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;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/YCgVVlxo3ngqzm51m7MeW9MtNlJNtTGNl4A70dOv.png" alt="" /></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; text-align: center;">图8 温度传感器电路</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 style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/v1XlicpCmPw1Rdt2dRCnAOQ8dedUWoqRpYtDy0Fn.png" alt="" /></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; text-align: center;">图9 0.96oled 电路</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 style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/9OWxvhr7ywaxfQEo6heYDEebFAlMIEEhAzUfWcJx.png" alt="" /></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; text-align: center;">图10 EEPROM 电路</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; padding-left: 40px;"><span style="color: #95a5a6;"><span style="color: #000000;">温湿度传感器</span>、</span>OLED显示电路、EPROM驱动电路均采用I2C方式与STM32G030K6T6通信，连接方式参考芯片手册连接即可。</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; padding-left: 40px;"><span style="color: #e03e2d;">注意：AT24C64原理图画了2个芯片，实际使用过程中只能焊接1个芯片，另一个备用（地址会冲突）。</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;"><strong>4.<span style="color: #95a5a6; font-size: 14px;"><span style="color: #95a5a6;"><span style="color: #000000;">1.</span></span></span>5 数码管显示电路</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;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/RyI3cOglbAzPrJa1QX3ADfXVficaPQ781n69su6P.png" alt="" /></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 style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/pqwNgyloUW9s9e7lWsuxiFBoKGHyr8NcIQrXenKQ.png" alt="" width="1077" height="328" /></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; text-align: center;">图11 数码管显示电路</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; padding-left: 40px;">采用了2个3位共阴极数码管，用三态输出8位移位寄存器进行控制，以减少STM32G030K6T的IO使用。</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>4.<span style="color: #95a5a6; font-size: 14px;"><span style="color: #95a5a6;"><span style="color: #000000;">1.</span></span></span>6按键电路、LED电路、蜂鸣器驱动电路</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;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/jXwd4HCByG5WY9NbOKsz3vq5tmIJDmVN5cB1j0Dr.png" alt="" /></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; text-align: center;">图12 按键、LED驱动电路</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 style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/v1XlicpCmPw1Rdt2dRCnAOQ8dedUWoqRpYtDy0Fn.png" alt="" /></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; text-align: center;">图13 蜂鸣器驱动电路</p> <p style="padding-left: 40px;">按键电路、LED电路、蜂鸣器驱动电路都是简单的IO高低电平控制，参照原理图与STM32G030K6T的IO连接即可。</p> <p><strong>4.<span style="color: #95a5a6; font-size: 14px;"><span style="color: #95a5a6;"><span style="color: #000000;">1.</span></span></span>7 IO接口电路</strong></p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/yWAC0EwCtJITSzytSIi7GQulBWd5mxEM7Cs1nHjZ.png" alt="" /></p> <p style="text-align: center;">图14 IO接口</p> <p style="padding-left: 40px;">将STM32G030K6T未使用的IO口引出，方便程序下载及扩展功能。</p> <p><strong>4.2 PCB设计</strong></p> <p style="padding-left: 40px;">PCB布局见下图，电路右侧放置数码管，左侧放置oled显示屏，下方放置按键，方便操作。</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/w3TziNerQV43erYOjQ357Lw7aD0E59egcvgK3LRi.png" alt="" width="692" height="493" /></p> <p style="text-align: center;">图15 PCB 布局</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/CnOdCrXiYHu6UekV7SVELJYMZxSVTy8QWBkm96fe.png" alt="" width="689" height="494" /></p> <p style="text-align: center;">图16 电路3D模型</p> <p style="padding-left: 40px;">温湿度传感器选择的是芯片，体积比较小，有一定的焊接难度，复刻的话可以选择模块的，方便焊接。</p> <p><strong>4.3 PCB 打样</strong></p> <p style="padding-left: 40px;">PCB设计完成之后就可以在嘉立创下单了，在这里非常感谢嘉立创提供免费的打样。</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/oshwhub/25e4672b3b1c426eb6b99f91d660ec08.jpeg" width="691" height="519" /></p> <p style="text-align: center;">图17 PCB实物图</p> <p><strong>4.4 焊接</strong></p> <p style="padding-left: 40px;">有3D打印条件的同学可以将PCB图导出为DXF文件，再到3维设计软件（solidworks/shapr 3D等）中拉伸一下，就可以打印出来作为PCB的钢网了。</p> <p style="padding-left: 40px;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/oshwhub/221b892db28a449eb8a97b834460e3ed.png" width="680" height="510" /></p> <p style="padding-left: 40px; text-align: center;">图18 PCB钢网模型</p> <p style="padding-left: 40px;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/oshwhub/21e0afbbfa65492fbf7d6b41fe533094.jpeg" width="687" height="516" /></p> <p style="padding-left: 40px; text-align: center;">图19 PCB上锡</p> <p style="padding-left: 40px;">将器件安装上就可以进入焊接环节了：</p> <p style="padding-left: 40px;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/oshwhub/8a4b2065a45447d09b6e71e94dd67ab8.jpeg" width="687" height="434" /></p> <p style="padding-left: 40px; text-align: center;">图20 焊接</p> <p style="padding-left: 40px;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/oshwhub/ae81d34aed674c11ace7526fffc1a11b.png" width="685" height="482" /></p> <p style="padding-left: 40px; text-align: center;">图21 焊接完成实物图</p> <p><strong>4.5 外壳设计</strong></p> <p style="padding-left: 40px;">外壳部分主要结合PCB布局，考虑OLED显示区域、数码管显示区域、按键区域、温湿度传感器区域。外壳设计见下图</p> <p style="padding-left: 40px;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/oshwhub/f1d1b85baea545e58738b6f1cf48cac3.png" width="682" height="511" /></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; text-align: center;">图22 外壳模型设计图</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; padding-left: 40px;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/oshwhub/a8ca528d4c6a4d83a716816fdf5e1298.jpg" width="680" height="510" /></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; padding-left: 40px; text-align: center;">图23 外壳实物图</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> <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;">5.1 设计思路</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; padding-left: 40px;">结合功能需求，程序部分主要为了实现以下4个功能模块：</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; padding-left: 40px;">温湿度显示（OLED显示和数码管显示）；</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; padding-left: 40px;">温湿度报警（温湿度上限设置、报警方式为LED闪烁和蜂鸣器蜂鸣）；</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; padding-left: 40px;">日期时间显示（温湿度计未联网，需要手动校准日期时间）；</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; padding-left: 40px;">模式设置（醒目模式、正常模式、低功耗模式）。</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; padding-left: 40px;">整体的设计思路见下图：</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/oshwhub/88155c58bc764ce890f9d88b625ab636.png" /></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; text-align: center;">图24 程序实现思路</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;">&nbsp;</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;">5.2 程序编写</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; padding-left: 40px;">程序编写主要使用STM32CubeMX和Keil uVision5，部分配置及程序见下图，详细配置及程序代码见附件。</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/oshwhub/bfecdf37036f4102920e235c303282c6.png" /></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; text-align: center;">图25 芯片引脚配置图（部分）</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;">&nbsp;</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/oshwhub/91d010ed81e6460498abb5ac297d99e8.png" /></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; text-align: center;">图26 程序代码（部分）</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;"><em>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; padding-left: 40px;">详见附件BOM清单。</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;"></em>7、大赛LOGO验证</h3> <hr class="horizontal-splitline normal-bold-2" /> <p style="line-height: 1.8;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/oshwhub/ae81d34aed674c11ace7526fffc1a11b.png" width="685" height="482" /></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; text-align: center;">图27 含大赛LOGO的电路板实物图</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 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; padding-left: 40px;">详见附件演示视频。</p> </div></p>