wangfq
91ed16a9b8
- 图示 docs/img/timing-chain-pd132t.{svg,png}：① 一个窗（0~11.2ms）② 检测到输出（0~600ms）③ 基线块平均（0~12s）
· 曲线按 §1~§4 公式真算：Xn=480 tick/160µs、窗=68×480/3MHz=10.880ms、α=79(τ=35.26ms)、
dlt=(32640×60)>>16=29、判据线 32611、大信号(+0.5%) 第 1 窗即越线(t≈10.9ms)、小信号(+0.1%) ≈2.2τ≈78ms
· 同时标注：两种检测路径、50ms 输出节拍量化、上电时 Origin 只有首窗单点样本
- 新工具 tools/plot_timing_chain.py：纯 stdlib 手写 SVG；chromium --headless 转 PNG（零第三方依赖）
- ⚠ 新增 §0.1 符号约定：车辆 ⇒ L↓ ⇒ f↑ ⇒ 周期/Xn↓ ⇒ Value/CAPVD↓（判据取下降侧）
⇒ 修正 5 处「深占压（频偏 −5%）⇒ 窗 +5.3%」的方向错误：车辆是频率升高、窗长应【缩短】(−4.8%)
- README：目录树补 img/ 与两个 tools 脚本；表格校验 0 异常（15 文件）
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210 lines
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<text x="258.0" y="334.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="14" fill="#a35b00" text-anchor="start" font-weight="normal">每 160 µs 累加一次 Xn（共 68 级台阶）⇒ CapCnt≥LPCNT 时「窗结账」</text>
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<text x="258.0" y="614.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="14" fill="#c1121f" text-anchor="start" font-weight="normal">窗结账：Value = Σ(68 个 Xn) = 32640 ⇒ CAP_OK=1 ⇒ 主循环随即调用 VD1_TASK()</text>
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<text x="236.0" y="548.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="15" fill="#0b2c4d" text-anchor="end" font-weight="bold">A4 Value</text>
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<text x="236.0" y="568.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="12" fill="#777" text-anchor="end" font-weight="normal">每窗更新一次</text>
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<text x="1476.0" y="552.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="12" fill="#0a58ca" text-anchor="start" font-weight="normal">Origin 基准 32640</text>
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<text x="1476.0" y="586.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="12" fill="#0a58ca" text-anchor="start" font-weight="normal">车后 32486（−0.5%）</text>
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<text x="1423.1" y="536.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="14" fill="#0a58ca" text-anchor="end" font-weight="normal">窗边界 10.88 ms（本窗只含 0.6~10.88 ms ⇒ 部分反映）</text>
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<text x="890.0" y="302.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="14" fill="#0b2c4d" text-anchor="start" font-weight="bold">窗 = LPCNT·Xn / f_cap = ⌊32768/Xn₀⌋·Xn / f_cap = 68 × 480 / 3 MHz = 10.880 ms（标称上限）</text>
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<text x="28.0" y="682.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="17" fill="#0a58ca" text-anchor="start" font-weight="bold">② 中观：检测延迟与输出（0 ~ 600 ms） 车辆进入 @0.6 ms</text>
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<text x="250.0" y="1121.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="13" fill="#666" text-anchor="middle" font-weight="normal">0</text>
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<text x="453.3" y="1121.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="13" fill="#666" text-anchor="middle" font-weight="normal">100 ms</text>
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<line x1="656.7" y1="1098.0" x2="656.7" y2="1105.0" stroke="#888" stroke-width="1.0" opacity="1.00"/>
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<text x="656.7" y="1121.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="13" fill="#666" text-anchor="middle" font-weight="normal">200 ms</text>
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<line x1="860.0" y1="1098.0" x2="860.0" y2="1105.0" stroke="#888" stroke-width="1.0" opacity="1.00"/>
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<text x="860.0" y="1121.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="13" fill="#666" text-anchor="middle" font-weight="normal">300 ms</text>
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<text x="1063.3" y="1121.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="13" fill="#666" text-anchor="middle" font-weight="normal">400 ms</text>
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<line x1="1266.7" y1="1098.0" x2="1266.7" y2="1105.0" stroke="#888" stroke-width="1.0" opacity="1.00"/>
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<text x="1266.7" y="1121.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="13" fill="#666" text-anchor="middle" font-weight="normal">500 ms</text>
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<line x1="1470.0" y1="1098.0" x2="1470.0" y2="1105.0" stroke="#888" stroke-width="1.0" opacity="1.00"/>
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<text x="1470.0" y="1121.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="13" fill="#666" text-anchor="middle" font-weight="normal">600 ms</text>
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<text x="236.0" y="1103.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="15" fill="#0b2c4d" text-anchor="end" font-weight="bold">时间</text>
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<text x="236.0" y="998.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="15" fill="#0b2c4d" text-anchor="end" font-weight="bold">B1 CAPVD</text>
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<text x="236.0" y="1016.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="12" fill="#777" text-anchor="end" font-weight="normal">IIR 平滑值</text>
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<text x="1476.0" y="821.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="12" fill="#0a58ca" text-anchor="start" font-weight="normal">Origin 32640（基线）</text>
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<text x="1476.0" y="848.7" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="12" fill="#c1121f" text-anchor="start" font-weight="normal">判据线 32611（−dlt=29 / 0.0916%）</text>
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<text x="250.0" y="0.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="1" fill="#111" text-anchor="start" font-weight="normal"></text>
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<text x="282.1" y="832.7" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="14" fill="#c1121f" text-anchor="start" font-weight="normal">越线 ⇒ 有车（大信号 Δf/f=+0.5%：第 1 窗即越线，t≈10.9 ms）</text>
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<text x="416.9" y="890.7" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="14" fill="#1f6fb2" text-anchor="start" font-weight="normal">小信号 Δf/f=+0.1%：≈2.2τ 才越线（t≈76 ms）—— τ 主导</text>
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<text x="1032.0" y="722.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="16" fill="#0a58ca" text-anchor="start" font-weight="bold">两种检测路径（同一条判据）</text>
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<text x="1032.0" y="746.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="14" fill="#333" text-anchor="start" font-weight="normal">大信号（+0.5%）：第 1 窗越线，窗内平均主导</text>
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<text x="1032.0" y="767.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="14" fill="#333" text-anchor="start" font-weight="normal">小信号（+0.1%≈阈值）：≈2.2τ≈78 ms，IIR 主导</text>
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<text x="1032.0" y="788.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="14" fill="#333" text-anchor="start" font-weight="normal">⇒ 延迟 ≈ 窗平均(≤1 窗) + IIR + 输出节拍(50 ms)</text>
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<text x="236.0" y="1064.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="12" fill="#777" text-anchor="end" font-weight="normal">FLAG_IN / 脉冲</text>
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<text x="256.0" y="1100.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="14" fill="#0a7d4b" text-anchor="start" font-weight="normal">50 ms 主节拍（T1 ISR）量化：FLAG_IN 在下一拍被消费 ⇒ 输出起点 ≤ 越线+50 ms。绿=继电器脉冲输出（500 ms）</text>
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<text x="28.0" y="1182.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="17" fill="#0a58ca" text-anchor="start" font-weight="bold">③ 宏观：基线 Origin 的块平均（0 ~ 12 s）</text>
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<text x="453.3" y="1371.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="13" fill="#666" text-anchor="middle" font-weight="normal">2 s</text>
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<text x="656.7" y="1371.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="13" fill="#666" text-anchor="middle" font-weight="normal">4 s</text>
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<text x="860.0" y="1371.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="13" fill="#666" text-anchor="middle" font-weight="normal">6 s</text>
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<line x1="1063.3" y1="1348.0" x2="1063.3" y2="1355.0" stroke="#888" stroke-width="1.0" opacity="1.00"/>
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<text x="1063.3" y="1371.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="13" fill="#666" text-anchor="middle" font-weight="normal">8 s</text>
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<line x1="1266.7" y1="1348.0" x2="1266.7" y2="1355.0" stroke="#888" stroke-width="1.0" opacity="1.00"/>
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<text x="1266.7" y="1371.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="13" fill="#666" text-anchor="middle" font-weight="normal">10 s</text>
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<line x1="1470.0" y1="1348.0" x2="1470.0" y2="1355.0" stroke="#888" stroke-width="1.0" opacity="1.00"/>
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<text x="1470.0" y="1371.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="13" fill="#666" text-anchor="middle" font-weight="normal">12 s</text>
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<text x="236.0" y="1353.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="15" fill="#0b2c4d" text-anchor="end" font-weight="bold">时间</text>
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<text x="236.0" y="1318.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="15" fill="#0b2c4d" text-anchor="end" font-weight="bold">C1 Origin</text>
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<text x="236.0" y="1336.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="12" fill="#777" text-anchor="end" font-weight="normal">基线（块平均）</text>
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<polyline points="250.00,32644.00 2462.27,32644.00 2462.27,32638.00 4674.53,32638.00 4674.53,32641.00 6886.80,32641.00 6886.80,32640.00 9099.07,32640.00 9099.07,32643.00 11311.33,32643.00 11311.33,32639.00 13523.60,32639.00 13523.60,32640.00 15735.87,32640.00 15735.87,32642.00 17948.13,32642.00 17948.13,32640.00 20160.40,32640.00 20160.40,32641.00 22372.67,32641.00 22372.67,32640.00 24584.93,32640.00 24584.93,32640.00" fill="none" stroke="#0a58ca" stroke-width="2.0" opacity="1.00" stroke-linejoin="round"/>
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<polyline points="250.00,32650.00 11577.70,32650.00 11577.70,32636.00 22905.40,32636.00 22905.40,32641.00" fill="none" stroke="#999" stroke-width="1.8" opacity="1.00" stroke-linejoin="round"/>
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<line x1="250.0" y1="1295.5" x2="1470.0" y2="1295.5" stroke="#aaa" stroke-width="1.0" opacity="1.00" stroke-dasharray="4,4"/>
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<circle cx="250.0" cy="1291.0" r="4.2" fill="#c1121f"/>
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<text x="258.0" y="1340.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="13" fill="#c1121f" text-anchor="start" font-weight="normal">上电：Origin = 首窗单点（噪声最大）</text>
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<text x="1476.0" y="1299.5" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="12" fill="#777" text-anchor="start" font-weight="normal">真值</text>
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||
<text x="1476.0" y="1277.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="12" fill="#0a58ca" text-anchor="start" font-weight="normal">PD132T: 100 窗=1.088 s（蓝）</text>
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<text x="1476.0" y="1299.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="12" fill="#888" text-anchor="start" font-weight="normal">PD136HA: 256 窗=5.571 s（灰）</text>
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<text x="605.8" y="1206.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="14" fill="#0b2c4d" text-anchor="middle" font-weight="normal">块平均 ⇒ 基线跟踪是「阶梯式」，块内一直用上一块的均值；有车期间冻结并重新累计</text>
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<rect x="28.0" y="1398.0" width="780.0" height="126.0" rx="6" fill="#fbfcfe" stroke="#0a58ca" stroke-width="1.2" opacity="1.00"/>
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<text x="40.0" y="1422.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="16" fill="#0a58ca" text-anchor="start" font-weight="bold">四条关系（讨论快慢时用「窗」最稳）</text>
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<text x="40.0" y="1446.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="14" fill="#333" text-anchor="start" font-weight="normal">① t_Xn = 分频比/(边沿系数·f_coil)：PD132T = 16/f、PD136HA = 32/f（随站点变，不是常数）</text>
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<text x="40.0" y="1467.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="14" fill="#333" text-anchor="start" font-weight="normal">② Value = Σ(LPCNT 个 Xn) 是箱式积分（计数域降采样）⇒ Δf/f = 表值/65536 精确</text>
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<text x="40.0" y="1488.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="14" fill="#333" text-anchor="start" font-weight="normal">③ τ/T = 256/α ⇒ α79 = 3.24 窗、α64 = 4.0 窗（与型号无关）</text>
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<text x="40.0" y="1509.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="14" fill="#333" text-anchor="start" font-weight="normal">④ Origin = 块平均（100 / 256 窗），非滑动 ⇒ 基线粒度 = 1 块</text>
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<rect x="830.0" y="1398.0" width="770.0" height="126.0" rx="6" fill="#fbfcfe" stroke="#0a58ca" stroke-width="1.2" opacity="1.00"/>
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<text x="842.0" y="1422.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="16" fill="#0a58ca" text-anchor="start" font-weight="bold">PD136HA 对照（同站点、同 ÷32）</text>
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<text x="842.0" y="1446.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="14" fill="#333" text-anchor="start" font-weight="normal">捕获：320 µs/次（单沿，整周期 32 个线圈周期）；Xn₀ 同为 480 tick</text>
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<text x="842.0" y="1467.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="14" fill="#333" text-anchor="start" font-weight="normal">窗：68 × 320 µs = 21.760 ms（标称上限 21.845）</text>
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||
<text x="842.0" y="1488.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="14" fill="#333" text-anchor="start" font-weight="normal">τ(α64) = 87.0 ms = 4.0 窗；Origin = 256 窗 = 5.571 s</text>
|
||
<text x="842.0" y="1509.0" font-family="Noto Serif CJK SC, Noto Sans CJK SC, sans-serif" font-size="14" fill="#333" text-anchor="start" font-weight="normal">⇒ 全链时间 ×2（基线 ×5.1）—— 响应更慢但积分深度 ×2</text></svg>
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