<div> </div> <h3>* 1、项目功能介绍</h3> <hr> <div>功能：</div> <div>            1.超声波测距，可测量范围 25cm-450cm 误差±1cm</div> <div>            2.温度显示，主要是为了校准音速的，顺便显示下温度（±0.5℃）</div> <div> <div> </div> </div> <div>通过超声波收发模块，收发信号的时间差*音速÷2.得到被测物距离</div> <div>由于音速受温度影响大，直接使用误差会比较大（实测±4cm），</div> <div>所以加了DS18B20,建了一个温度和音速对应系数表。结果乘以这个系数得到距离.误差减小很多（实测±1cm）</div> <div> <div> </div> </div> <div> <div> </div> </div> <h3>* 2、项目属性</h3> <hr> <div>原创项目</div> <div> </div> <div> </div> <h4>* 3、开源协议</h4> <hr> <div><span class="colour"><span class="size">GPL3.0开源协议；</span></span></div> <div> <div> </div> </div> <div> <div> </div> </div> <div><span class="colour"><span class="size">请在竞赛阶段填写 ↓</span></span></div> <h4>* 4、硬件部分</h4> <hr> <div> </div> <div>      最开始是用的MCU是STC89C52，看了STC的广告买了一块STC8H的开发板试了一下，由于官方提供了库函数，还有中文注释。所以上手非常简单</div> <div>      而且速度更快，价格更低，不需要复位电路和外部晶振（宏晶和嘉立创都是很优秀的公司，都有了不起的产品）</div> <div> </div> <div>最后选择用8H1K17,TSSOP-20的封装。喜欢这种每个引脚都用上的感觉</div> <div>            </div> <div><img src="//image.lceda.cn/pullimage/LoEnqSpKWtln7J3E94LuoaTb7Cv4r2zMo4JCm8UP.png" alt="硬件部分" width="1015" height="717"></div> <div> </div> <div> </div> <div>电源部分</div> <div>     极为先进的TYPE-C接口，锂电池供电，稳压至于3.3V</div> <div><img src="//image.lceda.cn/pullimage/YaxaxF05VwV2fHV36j17ZidugTDBpiPmHieBCEFB.jpeg" alt="" width="1005" height="754"></div> <div> </div> <div> </div> <div> </div> <div> </div> <h4>* 5、软件部分</h4> <hr> <div> <div> </div> </div> <div> <div>gitee: <a href="https://gitee.com/uniqueGG/show_distance.git" target="_blank">https://gitee.com/uniqueGG/show_distance.git</a></div> <div> </div> <div> </div> <div><img src="//image.lceda.cn/pullimage/mM7mOJyPLUiR7HwDiPgLzzs1IcBzfNqWSFZiWM5v.png" alt="" width="992" height="600"></div> <div> </div> </div> <div> </div> <h4>* 6、BOM清单</h4> <hr> <div> </div> <div> <div> <table style="height: 1768px;" width="943"> <tr> <td style="width: 64.875px;" height="19">No.</td> <td style="width: 68.2344px;">Quantity</td> <td style="width: 74.625px;">Comment</td> <td style="width: 78.2656px;">Designator</td> <td style="width: 82.7969px;">Footprint</td> <td style="width: 86.2188px;">Value</td> <td style="width: 100.031px;">Manufacturer Part</td> <td style="width: 99.1875px;">Manufacturer</td> <td style="width: 99.9688px;">Supplier Part</td> <td style="width: 105.531px;">Supplier</td> </tr> <tr> <td style="width: 60.7656px;" height="19">1</td> <td style="width: 63.7969px;">3</td> <td style="width: 69.9844px;">10uF</td> <td style="width: 73.25px;">C1,C2,C3</td> <td style="width: 77.4375px;">C0805</td> <td style="width: 80.3594px;">10uF</td> <td style="width: 94.6875px;">CL21A106KAYNNNE</td> <td style="width: 93px;">SAMSUNG(三星)</td> <td style="width: 92.8594px;">C15850</td> <td style="width: 98.0469px;">LCSC</td> </tr> <tr> <td style="width: 60.7656px;" height="19">2</td> <td style="width: 63.7969px;">1</td> <td style="width: 69.9844px;">22uF</td> <td style="width: 73.25px;">C4</td> <td style="width: 77.4375px;">C0805</td> <td style="width: 80.3594px;">22uF</td> <td style="width: 94.6875px;">CL21A226MQQNNNE</td> <td style="width: 93px;">SAMSUNG(三星)</td> <td style="width: 92.8594px;">C5674</td> <td style="width: 98.0469px;">LCSC</td> </tr> <tr> <td style="width: 60.7656px;" height="19">3</td> <td style="width: 63.7969px;">1</td> <td style="width: 69.9844px;">100nF</td> <td style="width: 73.25px;">C5</td> <td style="width: 77.4375px;">C1206</td> <td style="width: 80.3594px;">100nF</td> <td style="width: 94.6875px;">1206B104K101NT</td> <td style="width: 93px;">FH(风华)</td> <td style="width: 92.8594px;">C110255</td> <td style="width: 98.0469px;">LCSC</td> </tr> <tr> <td style="width: 60.7656px;" height="19">4</td> <td style="width: 63.7969px;">1</td> <td style="width: 69.9844px;">lin + 3.3</td> <td style="width: 73.25px;">H1</td> <td style="width: 77.4375px;">HDR-TH_1P-V-M_XKB_X4611WV-01I-C28D40</td> <td style="width: 80.3594px;"> </td> <td style="width: 94.6875px;"> </td> <td style="width: 93px;"> </td> <td style="width: 92.8594px;">C81276</td> <td style="width: 98.0469px;"> </td> </tr> <tr> <td style="width: 60.7656px;" height="19">5</td> <td style="width: 63.7969px;">1</td> <td style="width: 69.9844px;">lin - GND</td> <td style="width: 73.25px;">H2</td> <td style="width: 77.4375px;">HDR-TH_1P-V-M_XKB_X4611WV-01I-C28D40</td> <td style="width: 80.3594px;"> </td> <td style="width: 94.6875px;"> </td> <td style="width: 93px;"> </td> <td style="width: 92.8594px;">C81276</td> <td style="width: 98.0469px;"> </td> </tr> <tr> <td style="width: 60.7656px;" height="19">6</td> <td style="width: 63.7969px;">1</td> <td style="width: 69.9844px;">2.54-1*4P反弯排针</td> <td style="width: 73.25px;">H3</td> <td style="width: 77.4375px;">HDR-TH_4P-P2.54-H-M-W10.4</td> <td style="width: 80.3594px;"> </td> <td style="width: 94.6875px;">2.54-1*4P反弯排针</td> <td style="width: 93px;">BOOMELE(博穆精密)</td> <td style="width: 92.8594px;">C91552</td> <td style="width: 98.0469px;">LCSC</td> </tr> <tr> <td style="width: 60.7656px;" height="19">7</td> <td style="width: 63.7969px;">1</td> <td style="width: 69.9844px;">PZ254R-11-02P</td> <td style="width: 73.25px;">H5</td> <td style="width: 77.4375px;">HDR-TH_2P-P2.54-H-M-W10.4</td> <td style="width: 80.3594px;"> </td> <td style="width: 94.6875px;">PZ254R-11-02P</td> <td style="width: 93px;">XFCN(兴飞)</td> <td style="width: 92.8594px;">C492410</td> <td style="width: 98.0469px;">LCSC</td> </tr> <tr> <td style="width: 60.7656px;" height="19">8</td> <td style="width: 63.7969px;">1</td> <td style="width: 69.9844px;">XL-B324SURSYGW</td> <td style="width: 73.25px;">LED1</td> <td style="width: 77.4375px;">LED-TH_3P-BD3.9-P2.54_XL-B324SURSYGW</td> <td style="width: 80.3594px;"> </td> <td style="width: 94.6875px;">XL-B324SURSYGW</td> <td style="width: 93px;">XINGLIGHT(成兴光)</td> <td style="width: 92.8594px;">C2895561</td> <td style="width: 98.0469px;">LCSC</td> </tr> <tr> <td style="width: 60.7656px;" height="19">9</td> <td style="width: 63.7969px;">2</td> <td style="width: 69.9844px;">1kΩ</td> <td style="width: 73.25px;">R1,R2</td> <td style="width: 77.4375px;">RES-TH_BD2.7-L6.2-P10.20-D0.4</td> <td style="width: 80.3594px;">1kΩ</td> <td style="width: 94.6875px;">CR1/4W-1K±5%-ST26</td> <td style="width: 93px;">VO(翔胜)</td> <td style="width: 92.8594px;">C2894606</td> <td style="width: 98.0469px;">LCSC</td> </tr> <tr> <td style="width: 60.7656px;" height="19">10</td> <td style="width: 63.7969px;">1</td> <td style="width: 69.9844px;">10kΩ</td> <td style="width: 73.25px;">R4</td> <td style="width: 77.4375px;">RES-ADJ-TH_3P-L7.1-W6.9-P2.50-BL-BS</td> <td style="width: 80.3594px;">10kΩ</td> <td style="width: 94.6875px;">3362W-1-103LF</td> <td style="width: 93px;">BOURNS</td> <td style="width: 92.8594px;">C81167</td> <td style="width: 98.0469px;">LCSC</td> </tr> <tr> <td style="width: 60.7656px;" height="19">11</td> <td style="width: 63.7969px;">1</td> <td style="width: 69.9844px;">XKB5858-Z-C</td> <td style="width: 73.25px;">SW1</td> <td style="width: 77.4375px;">SW-TH_XKB5858-Z-C</td> <td style="width: 80.3594px;"> </td> <td style="width: 94.6875px;">XKB5858-Z-C</td> <td style="width: 93px;">XKB Connectivity(中国星坤)</td> <td style="width: 92.8594px;">C318865</td> <td style="width: 98.0469px;">LCSC</td> </tr> <tr> <td style="width: 60.7656px;" height="19">12</td> <td style="width: 63.7969px;">1</td> <td style="width: 69.9844px;">TP4056</td> <td style="width: 73.25px;">U2</td> <td style="width: 77.4375px;">ESOP-8_L4.9-W3.9-P1.27-LS6.0-BL-EP</td> <td style="width: 80.3594px;"> </td> <td style="width: 94.6875px;">TP4056</td> <td style="width: 93px;">TPOWER(天源)</td> <td style="width: 92.8594px;">C382139</td> <td style="width: 98.0469px;">LCSC</td> </tr> <tr> <td style="width: 60.7656px;" height="19">13</td> <td style="width: 63.7969px;">1</td> <td style="width: 69.9844px;">1Ω</td> <td style="width: 73.25px;">U3</td> <td style="width: 77.4375px;">RES-TH_BD2.7-L6.2-P10.20-D0.4</td> <td style="width: 80.3594px;">1Ω</td> <td style="width: 94.6875px;">CR1/4W-1Ω±5%-ST26</td> <td style="width: 93px;">VO(翔胜)</td> <td style="width: 92.8594px;">C2894610</td> <td style="width: 98.0469px;">LCSC</td> </tr> <tr> <td style="width: 60.7656px;" height="19">14</td> <td style="width: 63.7969px;">1</td> <td style="width: 69.9844px;">XC6219B332MR</td> <td style="width: 73.25px;">U4</td> <td style="width: 77.4375px;">SOT-23-5_L3.0-W1.7-P0.95-LS2.8-BR</td> <td style="width: 80.3594px;"> </td> <td style="width: 94.6875px;">XC6219B332MR</td> <td style="width: 93px;">UMW(友台半导体)</td> <td style="width: 92.8594px;">C347386</td> <td style="width: 98.0469px;">LCSC</td> </tr> <tr> <td style="width: 60.7656px;" height="19">15</td> <td style="width: 63.7969px;">1</td> <td style="width: 69.9844px;">STC8H1K17-36I-TSSOP20</td> <td style="width: 73.25px;">U5</td> <td style="width: 77.4375px;">TSSOP-20_L6.5-W4.4-P0.65-LS6.4-BL</td> <td style="width: 80.3594px;"> </td> <td style="width: 94.6875px;">STC8H1K17-36I-TSSOP20</td> <td style="width: 93px;">STC(宏晶)</td> <td style="width: 92.8594px;">C915675</td> <td style="width: 98.0469px;">LCSC</td> </tr> <tr> <td style="width: 60.7656px;" height="19">16</td> <td style="width: 63.7969px;">1</td> <td style="width: 69.9844px;">DS18B20</td> <td style="width: 73.25px;">U6</td> <td style="width: 77.4375px;">TO-92-3_L4.9-W3.7-P1.27-L</td> <td style="width: 80.3594px;"> </td> <td style="width: 94.6875px;">DS18B20</td> <td style="width: 93px;">MSKSEMI(美森科)</td> <td style="width: 92.8594px;">C5379069</td> <td style="width: 98.0469px;">LCSC</td> </tr> <tr> <td style="width: 60.7656px;" height="19">17</td> <td style="width: 63.7969px;">1</td> <td style="width: 69.9844px;">PM254-1-04-Z-8.5</td> <td style="width: 73.25px;">U7</td> <td style="width: 77.4375px;">HDR-TH_4P-P2.54-V-F</td> <td style="width: 80.3594px;"> </td> <td style="width: 94.6875px;">PM254-1-04-Z-8.5</td> <td style="width: 93px;">HCTL(华灿天禄)</td> <td style="width: 92.8594px;">C2897367</td> <td style="width: 98.0469px;">LCSC</td> </tr> <tr> <td style="width: 60.7656px;" height="19">18</td> <td style="width: 63.7969px;">1</td> <td style="width: 69.9844px;">BX-PM2.54-2-8PY</td> <td style="width: 73.25px;">U8</td> <td style="width: 77.4375px;">HDR-TH_16P-P2.54-V-F-R2-C8-S2.54-1</td> <td style="width: 80.3594px;"> </td> <td style="width: 94.6875px;">BX-PM2.54-2-8PY</td> <td style="width: 93px;">Bossie(博锡)</td> <td style="width: 92.8594px;">C18078147</td> <td style="width: 98.0469px;">LCSC</td> </tr> <tr> <td style="width: 60.7656px;" height="19">19</td> <td style="width: 63.7969px;">1</td> <td style="width: 69.9844px;">KH-TYPE-C-2P</td> <td style="width: 73.25px;">USB1</td> <td style="width: 77.4375px;">USB-SMD_KH-TYPE-C-2P</td> <td style="width: 80.3594px;"> </td> <td style="width: 94.6875px;">KH-TYPE-C-2P</td> <td style="width: 93px;">kinghelm(金航标)</td> <td style="width: 92.8594px;">C2919656</td> <td style="width: 98.0469px;">LCSC</td> </tr> </table> </div> </div> <div> <div> </div> </div> <div> </div> <div> </div> <h4>* 7、大赛LOGO验证</h4> <hr> <div> <div> </div> <div>正面实在没啥位置了，只好放背面了（嘉立创紫真是太好看了）</div> <div><img src="//image.lceda.cn/pullimage/VtadXFAbS30Ya7cHokiS72OmBWKg6RIh6RZeqahk.jpeg" alt="" width="948" height="711"></div> <div> </div> <div> </div> </div> <h4>* 8、历史版本</h4> <p> </p> <p> </p> <p>第一版：由于设计疏忽，直接短路，烧坏电源</p> <p>第二版：按按键开关选型错误，复位电路设计错误。修改好后，功能实现，但是误差有点大</p> <p>第三版：修改好硬件BUG，加入温度矫正。可以容忍的误差</p> <p> </p> <p><img src="//image.lceda.cn/pullimage/LBl2EGRxAVGnBJ2GJ2c5ZCbcu2ELCU0DhKqTIcdh.jpeg" alt="" width="950" height="1267"></p>