From ab028647f25ac2d123fa40ed7bd67b846afa35a1 Mon Sep 17 00:00:00 2001 From: wangfq Date: Thu, 3 Sep 2026 14:50:04 +0800 Subject: [PATCH] =?UTF-8?q?docs(V4B):=20=E5=BD=92=E6=A1=A3=E5=8E=9F?= =?UTF-8?q?=E7=90=86=E5=9B=BE=20Ver4.01=20+=20=E7=A1=AC=E4=BB=B6=E5=8F=98?= =?UTF-8?q?=E6=9B=B4=E8=AE=B0=E5=BD=95(=E6=8B=A8=E7=A0=81=E4=B8=89?= =?UTF-8?q?=E6=9E=81=E7=AE=A1=205.1K=E2=86=920=CE=A9,=20C=5Feff=2043?= =?UTF-8?q?=E2=86=9268)?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit - docs/hardware/DLD-154_Ver4.01_20251021_Logic.pdf (用户提供归档) - hardware-change-notes.md: 记录 2026-09-03 硬件修复(5.1K→0Ω)与固件 V4.29 COIL_CAL_C_NF=68 的对应关系; 遗留: 图框REV 3.01→4.01 待对齐、33nF档复测 --- .../DLD-154_Ver4.01_20251021_Logic.pdf | Bin 0 -> 28713 bytes docs/hardware/hardware-change-notes.md | 50 ++++++++++++++++++ 2 files changed, 50 insertions(+) create mode 100644 docs/hardware/DLD-154_Ver4.01_20251021_Logic.pdf create mode 100644 docs/hardware/hardware-change-notes.md diff --git 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z$c6Oval%z;=xvXY`h8W)Ku8iUB#D6Fk^w0Lv=0E^yjmWR(<2}Sh(4X|ZGCWQ?)JdB zx_zL(2L@n=;C-5oq2r&e%k#@;?Q7@t#h Ri6X=##XwwKirPw`{{vRMG7$g( literal 0 HcmV?d00001 diff --git a/docs/hardware/hardware-change-notes.md b/docs/hardware/hardware-change-notes.md new file mode 100644 index 0000000..1b12fd4 --- /dev/null +++ b/docs/hardware/hardware-change-notes.md @@ -0,0 +1,50 @@ +# DLD154V4 硬件变更记录 (Hardware Change Notes) + +> 关联仓库:DLD154V4B(固件/文档)。原理图归档见 `docs/hardware/`。 +> 本文记录与固件标定/行为相关的**硬件变更**,作为固件参数(如 COIL_CAL_C_NF)的硬件依据。 + +--- + +## 原理图归档 + +| 文件 | 版本 | 日期 | 说明 | +|------|------|------|------| +| DLD-154_Ver4.01_20251021_Logic.pdf | Ver4.01(图框残留 Ver3.01 字样,待核) | 2025-10-21 | 单路线圈车检器原理图(AT32F421F8P7-TSSOP20,12M 晶振) | + +> PDF 为 CAD 导出的文字层(GBK 乱码 + 平铺坐标碎片),仅能确认元件存在(AT32F421F8P7、 +> 12M Y1、两颗 33nF(*1206)、SS8050×3、拨码 SW6-DIP12、继电器 RLY1/RLY2、LEDA/B/C、 +> 0R R26/R18 等),**连线拓扑无法从文字层还原**,如需网表级对照请提供 CAD 源文件。 + +--- + +## 变更记录 + +### 2026-09-03 — 拨码电容开关支路:5.1K → 0Ω(原理图升版 Ver4.01) + +**背景**:线圈振荡两级频率(固定 33nF + 拨码经三极管接通第二颗 33nF)。 +拨码开关通过**三极管(SS8050 类)**断开/接通该电容。 + +**问题**(2026-09-03 实测):低频档(66nF 名义)实测等效谐振电容 **C_eff≈43nF** +(2 台×5 组线圈反推 41.3~45.5),与名义 66nF 明显不符;两档有效 C 比仅 1.25(应 2.0) +→ 第二颗 33nF 只等效并入 ~8.6nF,**疑似开关支路未完全导通**。 + +**修复**:三极管支路 **5.1K 电阻改 0Ω**(消除基极/开关压降,三极管饱和导通)。 + +**修复后实测**(0Ω 板,低频档,3 颗线圈): + +| 打印 f | LCR 实际 L | C_eff 反推 | +|--------|-----------|-----------| +| 52 kHz | 136 µH | 68.9 nF | +| 127 kHz | 23 µH | 68.3 nF | +| 88 kHz | 48 µH | 68.1 nF | + +**C_eff = 68.1~68.9nF(均值 68.4)≈ 名义 66nF** → 第二颗 33nF 已真正并联。 + +**固件关联**: +- V4.28 `COIL_CAL_C_NF=43`(5.1K 旧板带病特性)**作废** +- V4.29 `COIL_CAL_C_NF=68`(0Ω 板量产默认),L 估算残差 ≤1.5% +- 高频档(33nF)标定参考 34(旧板数据),0Ω 板待复测 + +**遗留**: +- 图框标题 REV 仍印 Ver3.01,需与文件名 Ver4.01 对齐 +- 0Ω 板 33nF 档 C_eff 复测(预期仍 ~34,开关只控并联支路时)