#第十届立创电赛#小智AI项目 - 立创电子设计大赛

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<div> <p style="line-height:1.8;"> </p> <p style="line-height:1.8;"> </p> <h3 style="line-height:1.8;">* 1、项目功能介绍</h3> <hr> <p>为了增强孩子学习的积极性，我参加了小智AI训练营，学习基于立创开源蓝牙模组制作的简易AI对话机器人，实现AI实时语音对话。</p> <p style="line-height:1.8;"><span style="color:#95a5a6;font-size:14px;">…</span></p> <p style="line-height:1.8;"> </p> <p style="line-height:1.8;"> </p> <h3 style="line-height:1.8;">*<span style="color:#95a5a6;">项目是首次公开；项目为原创；项目未曾在其他比赛中获奖。</span></h3> <p style="line-height:1.8;"> </p> <p style="line-height:1.8;"> </p> <p style="line-height:1.8;"> </p> <h3 style="line-height:1.8;">* 3、开源协议</h3> <hr> <p style="line-height:1.8;"><span style="color:#95a5a6;">Public Domain开源协议</span></p> <p> </p> <p style="line-height:1.8;"> </p> <p style="line-height:1.8;"> </p> <h3 style="line-height:1.8;">*4、硬件部分</h3> <hr> <p style="line-height:1.8;"><span style="color:#95a5a6;">项目原理图如下：</span></p> <p style="line-height:1.8;"><img src="https://image.lceda.cn/oshwhub/pullImage/db3a18e30e8c43619f8c1a707bb82615.png" alt="db3a18e30e8c43619f8c1a707bb82615.png"></p> <p style="line-height:1.8;">第一部分主控</p> <p style="line-height:1.8;"><img src="//image.lceda.cn/pullimage/I7TiB2LImryGJo7teV9gtlItQHIFn6yXXdcksyT4.png" alt="" width="311" height="388"></p> <p style="line-height:1.8;"> </p> <div> <div>主控用的是 [立创·开源SF32LB52模组]，一款蓝牙低功耗芯片，频率 <strong>240MHz</strong>，集成 8MB PSRAM 和 16MB Flash，支持锂电池直接供电。BLE 连接功耗（1S间隔）仅需 7μA，BT连接功耗（1S间隔）仅需 10μA，BLE + BT 双连接功耗比同行单BT连接功耗还能降低 60%。</div> <div> </div> <div> </div> <div> </div> <div>第二部分电池和开关</div> <div><img src="//image.lceda.cn/pullimage/BsHOPe3DUQSKyiAxnawFyczwYIug6q9WwZXxfUrA.png" alt="" width="246" height="282"></div> <div>SW1是电源总开关，负责电源通断。通过锂离子电池直接为模块供电。</div> <div> <div> <div>在本项目中，直接让电池电源直连模组的电源输入引脚 VSYS。这里需要注意<span style="color:#d83931;"><code>该模组电压范围要求 3.7V~4.7V</code></span>。3.3V 和 5V 供电都不行。</div> <div>模组的 VDD33_VOUT2 是由软件控制输出的，需要芯片正常启动后才有输出3V3。</div> <div> </div> </div> </div> <div> </div> <div>第三部分麦克风</div> <div><img src="//image.lceda.cn/pullimage/Itlm822UPXiFsP4YYRunxkf68tB4mcBZgrjfWYzl.png" alt="" width="249" height="232"></div> <div> <div> <div>在原理图中，R1电阻的作用就是给麦克风的正极输入一个基准电压MIC_BIAS，这个电压是由模组控制输出的，由模组控制则可以在要用时才输出，不用时关闭，实现低功耗。R1 的电阻值为 10K，测试效果能够接受，过低则采集的音频信号弱，过高则易引入噪声。</div> <div>C1 电容的作用就是对采集的信号进行滤波，滤除高频噪声，大多是滤除滋滋滋的声音或者声音沙哑问题。</div> </div> </div> <div>此处C1电容不建议改，会影响音质和音量。</div> <div> </div> <div>第四部分按键</div> <div><img src="//image.lceda.cn/pullimage/Fy6bmMxid2KIaSJAJSBGz6hZ2lHkOD0ieaWPipI1.png" alt="" width="658" height="174"></div> <div>本项目通过按键进行控制，SW3 PA34_KEY 是唤醒键 + 语音输入键，按下 SW3 按键可以让主控从低功耗睡眠状态唤醒，当主控正在工作时，按下按键进行语音输入。</div> <div> </div> <div>第五部分 LED指示灯</div> <div> <div> <div><img src="//image.lceda.cn/pullimage/2QqLHnqcI3M7CLSOamfbqBfxofnZtdZXlp0AfCJX.png" alt="" width="256" height="130"></div> <div>用于指示模组状态。通过模组IO控制。PA32_LED输出低电平LED灯亮，PA32_LED输出高电平LED灯灭。</div> </div> </div> <div> </div> <div> </div> <div>第六部分屏幕</div> <div><img src="//image.lceda.cn/pullimage/q1VA9duRIMfowKHgSX1VEmNYAI4WRVNcX4jcTxBP.png" alt="" width="183" height="141"></div> <div>此项目使用 1.69寸TFT屏幕，采购自 <a href="https://item.taobao.com/item.htm?id=694205959541" target="_blank">金逸晨1.69寸TFT液晶屏ST7789小屏240x280显示器LCD圆角屏SPI彩屏</a>，</div> <div> <div> <div>屏幕通过SPI协议控制，供电 3.3V。</div> <div>这里SPI的通信控制信号引脚，可以使用主控的硬件SPI外设，实现更高的通信速率，更快的屏幕刷新。但是使用主控的硬件SPI外设，则需要选择特定的引脚。</div> <div> </div> <div><strong>模组与屏幕的连接</strong></div> <div> <table style="border:none;table-layout:fixed;width:500px;"> <tr style="height:39px;"> <th style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;font-weight:500;background-color:#f2f3f5;text-align:left;" colspan="1" rowspan="1"> <div>模组</div> </th> <th style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;font-weight:500;background-color:#f2f3f5;text-align:left;" colspan="1" rowspan="1"> <div>1.69寸TFT屏幕</div> </th> <th style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;font-weight:500;background-color:#f2f3f5;text-align:left;" colspan="1" rowspan="1"> <div>说明</div> </th> </tr> <tr style="height:39px;"> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div style="text-align:center;">GND</div> </td> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div style="text-align:center;">GND</div> </td> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div>屏幕电源地</div> </td> </tr> <tr style="height:39px;"> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div style="text-align:center;">VDD33_VOUT2</div> </td> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div style="text-align:center;">VCC</div> </td> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div>屏幕电源输入</div> </td> </tr> <tr style="height:39px;"> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div style="text-align:center;">PA04</div> </td> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div style="text-align:center;">DO(SCL)</div> </td> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div>屏幕通信时钟引脚</div> </td> </tr> <tr style="height:39px;"> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div style="text-align:center;">PA05</div> </td> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div style="text-align:center;">D1(SDA)</div> </td> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div>屏幕通信数据引脚</div> </td> </tr> <tr style="height:39px;"> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div style="text-align:center;">PA00</div> </td> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div style="text-align:center;">RES</div> </td> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div>屏幕屏幕复位引脚</div> </td> </tr> <tr style="height:39px;"> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div style="text-align:center;">PA06</div> </td> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div style="text-align:center;">D/C</div> </td> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div>屏幕读写功能引脚</div> </td> </tr> <tr style="height:39px;"> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div style="text-align:center;">PA03</div> </td> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div style="text-align:center;">CS</div> </td> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div>屏幕通信片选引脚</div> </td> </tr> <tr style="height:39px;"> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div style="text-align:center;">PA42</div> </td> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div style="text-align:center;">BLK</div> </td> <td style="border-color:#dee0e3;font-size:10pt;padding:8px;vertical-align:top;" colspan="1" rowspan="1"> <div>屏幕背光控制引脚，高电平屏幕背光亮</div> </td> </tr> </table> </div> </div> </div> <div> </div> <div>第七部分音频功放与喇叭</div> <div><img src="//image.lceda.cn/pullimage/HR41qyjId5O0RO8Bja5AbUwRMHes8IRPJB97tvux.png" alt="" width="647" height="227"></div> <div> <div> <div>音频功放主要以上图的 U3 为主，它型号是 LM4871，是一款 3W、单声道 AB 类音频功率放大器，工作电压 1.9 - 5.5V。</div> </div> </div> <div> <div>功放芯片的 1 脚 Shutdown 是芯片掉电控制引脚，为高电平时功放停止工作实现低功耗；为低电平时功放正常工作。在原理图中通过 R8 电阻让该引脚默认为高电平即芯片默认停止工作，当需要功放工作时，需要主控的 PA26 引脚输出低电平才能工作，这样只有需要用的时候才开，不用的时候默认关闭，以节约用电。</div> <div> </div> <div>第八部分充电电路</div> <div><img src="https://image.lceda.cn/oshwhub/pullImage/a987a38c4a4f45c8995d09ac4578ad56.png" alt="a987a38c4a4f45c8995d09ac4578ad56.png"></div> <div>以TC4056A芯片为主，通过简单的几个外围器件，实现5V电源电压对电池充电，并通过指示灯进行充电指示和充满指示。</div> <div> </div> <div>第九部分串口下载</div> <div><img src="//image.lceda.cn/pullimage/AQF8J5KFFf2oan40AVK6ILLzKcItaOZjQGy9EFuA.png" alt="" width="256" height="174"></div> <div> <div>模组的下载是通过串口进行下载的，必须使用 PA18 和 PA19 引脚下载。</div> <div>本项目直接使用 CH340X 模块的接口作为下载器。实测能够正常下载和串口调试通信。</div> </div> </div> <div> </div> </div> <p style="line-height:1.8;"> </p> <p style="line-height:1.8;"> </p> <h3 style="line-height:1.8;">*5、软件部分</h3> <hr> <p style="line-height:1.8;"><span style="color:#95a5a6;font-size:14px;">由于自己对软件操作不太熟悉，所以直接使用了思澈科技提供的固件。注意，此时最好使用最新固件1.3.5，如果刷1.3.4固件会出现网络问题。</span></p> <p style="line-height:1.8;"> </p> <p style="line-height:1.8;"> </p> <h3 style="line-height:1.8;">*6、BOM清单</h3> <p>请以工程中的BOM为准。</p> <table style="border-collapse:collapse;width:960.77pt;" width="1281"> <tr style="height:13.5pt;"> <td style="height:13.5pt;width:63pt;" width="84" height="18">No.</td> <td style="width:57.75pt;" width="77">Quantity</td> <td style="width:120pt;" width="160">Comment</td> <td style="width:120pt;" width="160">Designator</td> <td style="width:120pt;" width="160">Footprint</td> <td style="width:120pt;" width="160">Value</td> <td style="width:120pt;" width="160">Manufacturer Part</td> <td style="width:120pt;" width="160">Manufacturer</td> <td style="width:120pt;" width="160">Supplier Part</td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">1</td> <td align="right">1</td> <td>10nF</td> <td>C1</td> <td>C0603</td> <td>10nF</td> <td>CC0603KRX7R9BB103</td> <td>YAGEO(国巨)</td> <td>C100042</td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">2</td> <td align="right">2</td> <td>1uF</td> <td>C2,C5</td> <td>CAP-SMD_BD4.0-L4.3-W4.3-LS5.0-FD</td> <td>1uF</td> <td>RST50V1M4X5</td> <td>捷而瑞</td> <td>C48970983</td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">3</td> <td align="right">2</td> <td>100nF</td> <td>C3,C4</td> <td>C0603</td> <td>100nF</td> <td>CGA0603X7R104K500JT</td> <td>HRE(芯声)</td> <td>C6119867</td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">4</td> <td align="right">1</td> <td>22uF</td> <td>C6</td> <td>CAP-SMD_BD6.3-L6.6-W6.6-LS7.3-FD-H7.7</td> <td>22uF</td> <td>JVJ100V22M6x8</td> <td>捷而瑞</td> <td>C46550391</td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">5</td> <td align="right">2</td> <td>10uF</td> <td>C7,C8</td> <td>C0603</td> <td>10uF</td> <td>CL10A106KP8NNNC</td> <td>SAMSUNG(三星)</td> <td>C19702</td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">6</td> <td align="right">1</td> <td>10uF</td> <td>C9</td> <td>C0805</td> <td>10uF</td> <td>CL21A106KAYNNNE</td> <td>SAMSUNG(三星)</td> <td>C15850</td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">7</td> <td align="right">1</td> <td>100nF</td> <td>C10</td> <td>C0805</td> <td>100nF</td> <td>0805B104K500NT</td> <td>FH(风华)</td> <td>C38141</td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">8</td> <td align="right">1</td> <td>DB301V-3.81-2P-GN-S</td> <td>H1</td> <td>CONN-TH_DB301V-3.81-2P-GN</td> <td> </td> <td>DB301V-3.81-2P-GN-S</td> <td>DORABO(地博电气)</td> <td>C2826458</td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">9</td> <td align="right">1</td> <td>PM254-2-05-W-8.5</td> <td>H2</td> <td>HDR-TH_10P-P2.54-H-F-R2-C5-W8.5</td> <td> </td> <td>PM254-2-05-W-8.5</td> <td>HCTL(华灿天禄)</td> <td>C2897425</td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">10</td> <td align="right">1</td> <td>PZ254V-11-02P</td> <td>H3</td> <td>HDR-TH_2P-P2.54-V-M</td> <td> </td> <td>PZ254V-11-02P</td> <td>XFCN(兴飞)</td> <td>C492401</td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">11</td> <td align="right">1</td> <td>XL-302UGD</td> <td>LED1</td> <td>LED-TH_BD3.8-P2.54-FD_GREEN</td> <td> </td> <td>XL-302UGD</td> <td>XINGLIGHT(成兴光)</td> <td>C2895476</td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">12</td> <td align="right">1</td> <td>XL-302UBD</td> <td>LED2</td> <td>LED-TH_BD3.8-P2.54-FD_BLUE</td> <td> </td> <td>XL-302UBD</td> <td>XINGLIGHT(成兴光)</td> <td>C2895474</td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">13</td> <td align="right">1</td> <td>XL-302SURD</td> <td>LED3</td> <td>LED-TH_BD3.8-P2.54-RD</td> <td> </td> <td>XL-302SURD</td> <td>XINGLIGHT(成兴光)</td> <td>C2895470</td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">14</td> <td align="right">1</td> <td>GMI4015P-2C-42db</td> <td>MIC1</td> <td>MIC-TH_BD4.0-P1.40-D0.4-L-FD</td> <td> </td> <td>GMI4015P-2C-42db</td> <td>INGHAi(赢海)</td> <td>C233292</td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">15</td> <td align="right">7</td> <td>10kΩ</td> <td>R1,R2,R3,R4,R7,R8,R9</td> <td>R0603</td> <td>10kΩ</td> <td>0603WAF1002T5E</td> <td>UNI-ROYAL(厚声)</td> <td>C25804</td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">16</td> <td align="right">2</td> <td>2kΩ</td> <td>R5,R6</td> <td>R0603</td> <td>2kΩ</td> <td>0603WAF1002T5E</td> <td>UNI-ROYAL(厚声)</td> <td> </td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">17</td> <td align="right">1</td> <td>2kΩ</td> <td>R10</td> <td>R0805</td> <td>2kΩ</td> <td>0805W8F1002T5E</td> <td>UNI-ROYAL(厚声)</td> <td> </td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">18</td> <td align="right">1</td> <td>1kΩ</td> <td>R11</td> <td>R0805</td> <td>1kΩ</td> <td>0805W8F1001T5E</td> <td>UNI-ROYAL(厚声)</td> <td>C17513</td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">19</td> <td align="right">4</td> <td>M3螺丝</td> <td>SCREW1,SCREW2,SCREW3,SCREW4</td> <td>M3螺丝</td> <td> </td> <td> </td> <td> </td> <td> </td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">20</td> <td align="right">1</td> <td>SK12D07VG5</td> <td>SW1</td> <td>SW-TH_SK12D07VG5-1</td> <td> </td> <td>SK12D07VG5</td> <td>SHOU HAN(首韩)</td> <td>C431548</td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">21</td> <td align="right">2</td> <td>TS665CJ</td> <td>SW2,SW3</td> <td>SW-TH_4P-L6.0-W6.0-P4.50-LS6.5</td> <td> </td> <td>TS665CJ</td> <td>SHOU HAN(首韩)</td> <td>C393938</td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">22</td> <td align="right">1</td> <td>LC-OPEN-SF32LB52-MOD-N16R8</td> <td>U1</td> <td>COMM-SMD_L27.9-W18.0-P1.10_SF32LB52-MOD-1-N16R8</td> <td> </td> <td>LC-OPEN-SF32LB52-MOD-N16R8</td> <td>立创开发板</td> <td>C42924267</td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">23</td> <td align="right">1</td> <td>1.69寸TFTLCD</td> <td>U2</td> <td>1.69寸300*240 TFT LCD</td> <td> </td> <td> </td> <td> </td> <td> </td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">24</td> <td align="right">1</td> <td>LM4871</td> <td>U3</td> <td>SOIC-8_L4.9-W3.9-P1.27-LS6.0-BL</td> <td> </td> <td>LM4871</td> <td>IDCHIP(英锐芯)</td> <td>C7494970</td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">25</td> <td align="right">1</td> <td>TC4056A</td> <td>U4</td> <td>ESOP-8_L4.9-W3.9-P1.27-LS6.0-BR-EP3.3</td> <td> </td> <td>TC4056A</td> <td>FM(富满)</td> <td>C84051</td> </tr> <tr style="height:13.5pt;"> <td style="height:13.5pt;" height="18">26</td> <td align="right">1</td> <td>KH-TYPE-C-2P</td> <td>USB1</td> <td>USB-SMD_KH-TYPE-C-2P</td> <td> </td> <td>KH-TYPE-C-2P</td> <td>kinghelm(金航标)</td> <td>C2919656</td> </tr> </table> <hr> <h3 style="line-height:1.8;">*7、大赛LOGO验证</h3> <hr> <p style="line-height:1.8;"><img src="//image.lceda.cn/pullimage/0bHW3fsBkyspromehPyd0ywYJs1fx1aDdaNiL8gh.png" alt="" width="524" height="310"></p> <p style="line-height:1.8;"> </p> <p style="line-height:1.8;"> </p> <h3 style="line-height:1.8;">* 8、演示您的项目并录制成视频上传</h3> <hr> <p style="line-height:1.8;"> </p> <p style="line-height:1.8;"> </p> <p style="line-height:1.8;"> </p> <p style="line-height:1.8;"> </p> </div>