📁 新增 pcb/ 目录：硬件同事（唐磊）PCB 设计文档归档区
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<ns0:text x="20" y="56" style="font-size: 12px; fill: #5b6475">信号链：环形线圈 → 浪涌保护 → 匹配变压器 → 谐振/考毕兹振荡 → 比较器整形 → MCU 测频判车 → 光耦隔离 → 继电器输出</ns0:text>
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<ns0:text x="478" y="368" style="font-size: 11px; fill: #5b6475">C1 谐振电容</ns0:text>
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<ns0:text x="552" y="240" text-anchor="middle" style="font-size: 11px; fill: #5b6475">考毕兹振荡器（基极调谐）</ns0:text>
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<ns0:text x="522" y="416" style="font-size: 11px; fill: #5b6475">C3 100p</ns0:text>
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<ns0:text x="540" y="306" style="font-size: 11px; fill: #5b6475">Lx 谐振</ns0:text>
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<ns0:text x="712" y="322" style="font-size: 11px; fill: #5b6475">+</ns0:text>
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<ns0:text x="610" y="392" style="font-size: 11px; fill: #5b6475">Vref 分压</ns0:text>
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<ns0:text x="610" y="406" style="font-size: 11px; fill: #5b6475">(R3/R4)</ns0:text>
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<ns0:text x="640" y="452" style="font-size: 11px; fill: #5b6475">方波输出 f≈f₀</ns0:text>
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<ns0:text x="816" y="302" style="font-size: 11px; fill: #5b6475">· 定时器输入捕获测周期</ns0:text>
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<ns0:text x="816" y="322" style="font-size: 11px; fill: #5b6475">· f = Fclk / period → Δf</ns0:text>
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<ns0:text x="816" y="342" style="font-size: 11px; fill: #5b6475">· 数字滤波 + 消抖</ns0:text>
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<ns0:text x="816" y="362" style="font-size: 11px; fill: #5b6475">· 灵敏度阈值(多档)判断</ns0:text>
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<ns0:text x="816" y="382" style="font-size: 11px; fill: #5b6475">· 存在/通过 状态机</ns0:text>
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<ns0:text x="816" y="402" style="font-size: 11px; fill: #5b6475">· 基准频率慢速自适应(抗温漂)</ns0:text>
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<ns0:text x="816" y="422" style="font-size: 11px; fill: #5b6475">· 继电器输出 + 自检/看门狗</ns0:text>
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<ns0:text x="756" y="300" style="font-size: 11px; fill: #5b6475">PA0 捕获</ns0:text>
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<ns0:text x="1004" y="320" style="font-size: 11px; fill: #5b6475">PA1</ns0:text>
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<ns0:path d="M900,476 L894,488 H906 Z" style="fill: none; stroke: #172033; stroke-width: 1.6" />
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<ns0:path d="M900,488 V494" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
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<ns0:path d="M894,494 H906" style="fill: none; stroke: #172033; stroke-width: 1.6" />
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<ns0:path d="M900,494 V506" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
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<ns0:path d="M894,506 H906" style="fill: none; stroke: #172033; stroke-width: 1.6" />
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<ns0:path d="M900,506 V520" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
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<ns0:path d="M900,520 V650" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
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<ns0:text x="918" y="492" style="font-size: 11px; fill: #5b6475">D2 状态LED</ns0:text>
|
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<ns0:text x="918" y="506" style="font-size: 11px; fill: #5b6475">R6 限流</ns0:text>
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|
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<ns0:path d="M860,240 V230" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
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<ns0:text x="846" y="224" style="font-size: 11px; fill: #5b6475">VDD 3.3V</ns0:text>
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<ns0:text x="1065" y="282" text-anchor="middle" style="font-size: 11px; fill: #5b6475">U2 光耦</ns0:text>
|
||||
|
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<ns0:path d="M1052,320 V326" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
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<ns0:circle cx="1062" cy="352" r="2" style="fill: #172033; stroke: none" />
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<ns0:path d="M1062,352 L1072,344 V352" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
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<ns0:path d="M1062,352 L1072,360 V352" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
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<ns0:path d="M1052,326 H1046 V352 H1060" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
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<ns0:path d="M1066,340 L1072,336" style="fill: none; stroke: #172033; stroke-width: 1.6" />
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<ns0:path d="M1066,344 L1072,340" style="fill: none; stroke: #172033; stroke-width: 1.6" />
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<ns0:path d="M1030,330 H1016" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
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<ns0:rect x="1004" y="324" width="12" height="12" style="fill: none; stroke: #172033; stroke-width: 1.6" />
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<ns0:text x="996" y="312" style="font-size: 11px; fill: #5b6475">R5</ns0:text>
|
||||
|
||||
<ns0:path d="M1065,360 V375" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
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<ns0:path d="M1065,375 H1090" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
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<ns0:rect x="1080" y="368" width="22" height="14" rx="2" style="fill: none; stroke: #172033; stroke-width: 1.6" />
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<ns0:path d="M1102,375 H1108" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:path d="M1080,368 V375" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:path d="M1080,382 V375" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:path d="M1080,368 H1074" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:path d="M1080,382 H1074" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:text x="1108" y="380" style="font-size: 11px; fill: #5b6475">Q2</ns0:text>
|
||||
<ns0:text x="1108" y="394" style="font-size: 11px; fill: #5b6475">N-MOS</ns0:text>
|
||||
|
||||
<ns0:path d="M1080,368 V430" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:text x="1090" y="362" style="font-size: 11px; fill: #5b6475">D</ns0:text>
|
||||
<ns0:text x="1090" y="388" style="font-size: 11px; fill: #5b6475">S</ns0:text>
|
||||
|
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<ns0:rect x="1120" y="250" width="60" height="46" rx="4" style="stroke: #64748b; stroke-width: 1; fill: #e2e8f0" />
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<ns0:path d="M1130,258 L1170,288" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:text x="1150" y="282" text-anchor="middle" style="font-size: 11px; fill: #5b6475">K1</ns0:text>
|
||||
<ns0:path d="M1108,375 H1120 V273" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:path d="M1180,273 H1200" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
|
||||
<ns0:path d="M1200,273 V300" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:path d="M1200,300 H1216" style="stroke: #64748b; stroke-width: 2; fill: none" />
|
||||
<ns0:circle cx="1200" cy="300" r="2" style="fill: #172033; stroke: none" />
|
||||
<ns0:path d="M1216,258 H1220" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:path d="M1216,342 H1220" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:circle cx="1216" cy="258" r="2" style="fill: #172033; stroke: none" />
|
||||
<ns0:circle cx="1216" cy="342" r="2" style="fill: #172033; stroke: none" />
|
||||
<ns0:text x="1222" y="254" style="font-size: 11px; fill: #5b6475">NO</ns0:text>
|
||||
<ns0:text x="1222" y="346" style="font-size: 11px; fill: #5b6475">NC</ns0:text>
|
||||
<ns0:text x="1222" y="304" style="font-size: 11px; fill: #5b6475">COM</ns0:text>
|
||||
<ns0:text x="1124" y="318" style="font-size: 11px; fill: #5b6475">→ 道闸/PLC</ns0:text>
|
||||
|
||||
<ns0:path d="M1120,240 V250" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:text x="1080" y="238" style="font-size: 11px; fill: #5b6475">K1 线圈接 VCC(或外供)</ns0:text>
|
||||
|
||||
|
||||
<ns0:rect x="20" y="560" width="1200" height="120" rx="8" style="fill: none; stroke: #64748b; stroke-width: 1; stroke-dasharray: 6 5; opacity: 0.8" />
|
||||
<ns0:text x="30" y="580" style="font-size: 11px; fill: #5b6475">电源与保护</ns0:text>
|
||||
<ns0:rect x="40" y="596" width="86" height="30" rx="4" style="stroke: #64748b; stroke-width: 1; fill: #e2e8f0" />
|
||||
<ns0:text x="83" y="615" text-anchor="middle" style="font-size: 11px; fill: #5b6475">VIN 12~24V</ns0:text>
|
||||
<ns0:path d="M126,611 H140" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:path d="M140,605 L148,611 L140,617 Z" style="fill: none; stroke: #172033; stroke-width: 1.6" />
|
||||
<ns0:path d="M148,611 H158" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:path d="M158,596 V626" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:path d="M158,596 L164,584 H176 L170,596 Z" style="fill: none; stroke: #172033; stroke-width: 1.6" />
|
||||
<ns0:path d="M158,626 L170,596 H176 L164,584 Z" style="fill: none; stroke: #172033; stroke-width: 1.6" />
|
||||
<ns0:text x="190" y="604" style="font-size: 11px; fill: #5b6475">D1 防反接</ns0:text>
|
||||
<ns0:text x="190" y="618" style="font-size: 11px; fill: #5b6475">TVS2 吸收浪涌</ns0:text>
|
||||
<ns0:path d="M158,611 H200" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:rect x="200" y="596" width="70" height="30" rx="4" style="stroke: #64748b; stroke-width: 1; fill: #e2e8f0" />
|
||||
<ns0:text x="235" y="615" text-anchor="middle" style="font-size: 11px; fill: #5b6475">U3 LDO 5V</ns0:text>
|
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<ns0:path d="M270,611 H300" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
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<ns0:rect x="300" y="596" width="80" height="30" rx="4" style="stroke: #64748b; stroke-width: 1; fill: #e2e8f0" />
|
||||
<ns0:text x="340" y="615" text-anchor="middle" style="font-size: 11px; fill: #5b6475">U4 LDO 3.3V</ns0:text>
|
||||
<ns0:path d="M340,596 V540" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:path d="M340,540 H860 V230" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:path d="M340,626 V650" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
|
||||
<ns0:path d="M160,650 H120" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:path d="M120,640 H126" style="fill: none; stroke: #172033; stroke-width: 1.6" />
|
||||
<ns0:path d="M120,650 H126" style="fill: none; stroke: #172033; stroke-width: 1.6" />
|
||||
<ns0:path d="M123,640 V650" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:text x="96" y="668" style="font-size: 11px; fill: #5b6475">Cin</ns0:text>
|
||||
<ns0:path d="M340,650 H300" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:path d="M300,640 H306" style="fill: none; stroke: #172033; stroke-width: 1.6" />
|
||||
<ns0:path d="M300,650 H306" style="fill: none; stroke: #172033; stroke-width: 1.6" />
|
||||
<ns0:path d="M303,640 V650" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:text x="276" y="668" style="font-size: 11px; fill: #5b6475">C5</ns0:text>
|
||||
<ns0:path d="M400,650 H380" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:path d="M380,640 H386" style="fill: none; stroke: #172033; stroke-width: 1.6" />
|
||||
<ns0:path d="M380,650 H386" style="fill: none; stroke: #172033; stroke-width: 1.6" />
|
||||
<ns0:path d="M383,640 V650" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:text x="392" y="668" style="font-size: 11px; fill: #5b6475">C6</ns0:text>
|
||||
|
||||
|
||||
<ns0:rect x="20" y="700" width="1200" height="160" rx="8" style="fill: #e2e8f0; stroke: #64748b; stroke-width: 1" />
|
||||
<ns0:text x="36" y="722" style="font-size: 14px; font-weight: 600; fill: #172033">元件图例</ns0:text>
|
||||
<ns0:text x="36" y="746" style="font-size: 11px; fill: #5b6475">L 电感（线圈符号）</ns0:text>
|
||||
<ns0:path d="M56,756 a6,6 0 0 1 0,12 a6,6 0 0 0 0,12 a6,6 0 0 1 0,12" style="fill: none; stroke: #172033; stroke-width: 1.6" />
|
||||
<ns0:text x="140" y="746" style="font-size: 11px; fill: #5b6475">C 电容</ns0:text>
|
||||
<ns0:path d="M160,756 H172" style="fill: none; stroke: #172033; stroke-width: 1.6" /><ns0:path d="M160,768 H172" style="fill: none; stroke: #172033; stroke-width: 1.6" /><ns0:path d="M166,756 V768" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:text x="244" y="746" style="font-size: 11px; fill: #5b6475">R 电阻</ns0:text>
|
||||
<ns0:rect x="264" y="752" width="12" height="16" style="fill: none; stroke: #172033; stroke-width: 1.6" />
|
||||
<ns0:text x="340" y="746" style="font-size: 11px; fill: #5b6475">TVS 双向</ns0:text>
|
||||
<ns0:path d="M360,756 L354,768 H366 Z" style="fill: none; stroke: #172033; stroke-width: 1.6" />
|
||||
<ns0:path d="M360,768 L366,756 H354 Z" style="fill: none; stroke: #172033; stroke-width: 1.6" />
|
||||
<ns0:text x="440" y="746" style="font-size: 11px; fill: #5b6475">NPN 三极管</ns0:text>
|
||||
<ns0:path d="M456,764 H470" style="stroke: #64748b; stroke-width: 1.3; fill: none" /><ns0:circle cx="470" cy="764" r="2" style="fill: #172033; stroke: none" />
|
||||
<ns0:path d="M470,764 L482,748 V764" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:path d="M470,764 L480,776 V784" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:path d="M474,774 L484,768" style="fill: none; stroke: #172033; stroke-width: 1.6" />
|
||||
<ns0:text x="560" y="746" style="font-size: 11px; fill: #5b6475">MOS</ns0:text>
|
||||
<ns0:rect x="580" y="756" width="20" height="12" rx="2" style="fill: none; stroke: #172033; stroke-width: 1.6" />
|
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<ns0:text x="660" y="746" style="font-size: 11px; fill: #5b6475">继电器</ns0:text>
|
||||
<ns0:rect x="680" y="754" width="16" height="12" style="fill: none; stroke: #172033; stroke-width: 1.6" />
|
||||
<ns0:path d="M684,756 L692,764" style="stroke: #64748b; stroke-width: 1.3; fill: none" />
|
||||
<ns0:text x="36" y="806" style="font-size: 11px; fill: #5b6475">关键设计点：① 环路经匹配变压器隔离耦合，直连会受地环路干扰；② 谐振电容 C1 决定频段，频率 f₀≈1/(2π√(LC))；③ 灵敏度=Δf 阈值，建议多档可调 + 回差；④ 基准频率上电自学习 + 慢速跟踪，抗温漂；⑤ 输出必须光耦隔离，防浪涌反灌烧 MCU；⑥ 软件加看门狗，继电器粘连检测。</ns0:text>
|
||||
<ns0:text x="36" y="830" style="font-size: 11px; fill: #5b6475">⚠️ 数值为典型参考：线圈电感取决于尺寸/匝数/引线长度，谐振频率推荐 20~150kHz（越低抗干扰越差、灵敏度越高，需现场折中）。</ns0:text>
|
||||
</ns0:svg>
|
||||
Reference in New Issue
Block a user