Access Reader Design
Access Reader — важная правка по РАЗМЕЩЕНИЮ разъёмов (ты на placement): ВСЕ разъёмы и клеммники ставь ПО КРАЮ платы, ориентированными наружу, с зазором под вставку кабеля/штекера. Сейчас RJ45 Ethernet стоит ПОСЕРЕДИНЕ — в него физически не воткнуть провод, перемести на кромку. На край разъёмной стороной наружу: RJ45 (Ethernet), клеммник входа 9–32В DC, клеммники 2 реле (NO/NC/COM), сервисный USB, клеммники/хедеры RS-485, Wiegand и 2 входов, разъём/шлейф GM861 (QR), 2-pin разъём катушки 125к (J101). Вход кабеля не должен перекрываться компонентами, крепёжными отверстиями или соседними разъёмами (проверь высоту/вылет коннектора наружу за контур). Зону поднесения карт (антенны 13.56/125к) держи свободным краем без разъёмов. Это правило — жёсткое: неудобный доступ к разъёму = брак. Обнови placement и manufacturing notes, отметь этот constraint в ready-to-export чеклисте.
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Access Reader Factory Package Run — 2026-07-09
Full first Rev A prototype preserved: PoE AG9905-MTB, RJ45/W5500 Ethernet, 9-32 V DC LMR16020 branch and ESP32-S3 Wi-Fi are populated. Criti...
Сделал автономный проход и экспортировал артефакты; все ссылки на Gerber+drill, BOM, BOM с DNP-колонкой и Pick-and-Place собраны в Access Reader Factory Package Run — 2026-07-09.
Что не удалось: пакет не order-ready — routing не завершён, DRC всё ещё показывает много airwires; stackup tool принял 4-layer, но readback показывает inner layers как Signal вместо GND/PWR; SS14 diode-OR работает как reverse-blocking fallback, но лучше заменить на ideal-diode/power-mux перед производством. Critical ERC по питанию/GND для W5500, USB ESD, LMR16020 и PoE/DC OR-ing исправлены, placement выполнен на 80×100 мм.
Fix stackup and routing
Fix stackup
Allow larger board
Finish routing
Replace diode OR
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Regulatory and Safety Notes - Access Reader
Status
Preliminary design-stage notes. This is not a certification report. It identifies documents and design evidence that must be produced as the schematic and layout mature.
Applicable Categories
- Wireless intentional radiators: ESP32-S3 Wi-Fi/BLE module, 13.56 MHz NFC reader, 125 kHz LF reader.
- Wired communications: Ethernet/PoE, RS-485, Wiegand, USB service.
- SELV power: 9 to 32 V DC and PoE 802.3af; no mains input on the PCB.
- Access-control equipment with relay outputs for locks/turnstiles.
Likely Standards and Evidence
Table
| Area | Candidate standard or evidence | Current status |
|---|---|---|
| Wi-Fi/BLE radio | Modular approval conditions for ESP32-S3-WROOM-1 | Must verify exact module FCC/CE docs and antenna keepout |
| NFC/LF emissions | EN 300 330 or regional SRD rules | Requires product-level RF/EMC testing |
| EMC immunity/emissions | EN 55032/55035, IEC 61000-4-x | Requires prototype testing |
| ESD | IEC 61000-4-2 on enclosure and external ports | Design protection matrix required |
| Safety | IEC/UL 62368-1 style SELV assessment | PoE isolation boundary must be documented |
| PoE | IEEE 802.3af PD compliance | Class and power budget not final |
| Access control | UL 294 / EN 60839 style considerations if target market requires | Product/regional requirement TBD |
| Environmental | Indoor 0 to 50 C, non-condensing | Outdoor/IP65 not in Rev A scope |
Technical Construction File Draft Checklist
Table
| Item | Status |
|---|---|
| Product description | Drafted in Project Specification |
| Block diagram | Drafted in Project Specification |
| Schematic | Not started |
| PCB layout/Gerbers | Not started |
| BOM with MPNs | Not started |
| RF module datasheets and grants | Required |
| Antenna keepout evidence | Required after layout |
| EMC/RF lab test reports | External lab work required |
| User manual safety warnings | Draft required before pilot |
| Declaration of conformity | Draft after BOM and intended market are frozen |
Safety Risk Register
Table
| Hazard | Source | Effect | Preliminary mitigation |
|---|---|---|---|
| Electric shock or insulation failure | PoE flyback isolation boundary | User/service risk, certification failure | Use certified transformer, creepage/clearance rules, no copper crossing isolation gap |
| Fire/overheat | Undersized 5 V buck, PoE flyback or relay driver | Enclosure heating, device failure | Worst-case power budget, thermal checks at 50 C, current limiting/fuse |
| Door unlock failure unsafe state | MCU reset, relay driver glitch, brownout | Unintended unlock or failure to unlock | Relay drivers default off, brownout reset, watchdog, safe firmware state machine |
| Relay contact degradation | Inductive lock/turnstile load | Welded or failed contacts, EMI reset | Snubber/TVS/MOV footprints and installation guidance for external suppression |
| ESD reset/damage | User-accessible ports and card area | Device crash or permanent damage | TVS/ESD protection on DC, RJ45, RS-485, Wiegand, USB, inputs and enclosure strategy |
| RF read failure | Metal mounting, antenna detuning, EMI from PoE/bucks | Poor user experience or denied access | RF floorplan, tuning network, EVT antenna measurements in enclosure |
| Credential compromise | Physical access to service port/flash | Security breach | Secure boot, flash encryption, production debug lock-down, unique certs |
Design Requirements Added From Compliance Review
- Do not depend solely on ESP32 module certification; final product still needs EMC/RF verification because NFC and LF are intentional radiators.
- Document all antenna keepouts and integration conditions.
- Treat RJ45/PoE, DC input, RS-485, Wiegand and relay terminals as external-port EMC risk points.
- Create user manual warnings that relay outputs are dry contacts only and do not power locks.
- Add test points and labels needed for production self-test and certification troubleshooting.
Status
Applicable Categories
Likely Standards and Evidence
Technical Construction File Draft Checklist
Safety Risk Register
Design Requirements Added From Compliance Review
