道闸接口技术难题深度解决方案 多厂商异构协议·统一适配层·联动时序

// 请求 POST /api/v1/gate/recognize { "gate_id": "GATE_001", "image_base64": "base64编码的车牌图片", "direction": "in", // in=入场, out=出场 "timestamp": 1694736000000 } // 响应 { "code": 0, "plate_number": "闽A12345", "plate_color": "blue", // blue=蓝牌, green=新能源, yellow=黄牌 "confidence": 0.985, // 识别置信度 0-1 "vehicle_type": "car", // car=小车, truck=货车, motorcycle=摩托车 "recognized_at": "2026-09-15T10:00:00+08:00" }

// 开闸 POST /api/v1/gate/{gate_id}/open { "reason": "plate_recognized", // 开闸原因 "plate_number": "闽A12345", "operator": "system", // system=系统自动, manual=人工 "timeout": 3000 // 超时时间ms } // 关闸 POST /api/v1/gate/{gate_id}/close // 道闸状态查询 GET /api/v1/gate/{gate_id}/status { "gate_id": "GATE_001", "status": "open", // open=开, closed=关, moving=运动中, fault=故障 "current_angle": 90, // 当前角度 "last_action": "open", "last_action_at": "2026-09-15T10:00:01+08:00", "fault_code": null, "online": true }

// 通行记录上报（道闸→平台） POST /api/v1/gate/records { "record_id": "REC_20260915_000001", "gate_id": "GATE_001", "plate_number": "闽A12345", "direction": "in", // in=入场, out=出场 "pass_type": "recognized", // recognized=识别放行, manual=人工放行, free=免费放行 "entry_time": "2026-09-15T10:00:00+08:00", "exit_time": null, "image_url": "https://cdn.example.com/plate/xxx.jpg", "confidence": 0.985, "vehicle_type": "car", "parking_lot_id": "PLOT_001" } // 通行记录查询 GET /api/v1/gate/records?plate_number=闽A12345&start_time=xxx&end_time=xxx&page=1&page_size=20

// 白名单查询（车辆到达时查询） GET /api/v1/gate/whitelist/check?plate_number=闽A12345&gate_id=GATE_001 { "plate_number": "闽A12345", "in_whitelist": true, "whitelist_type": "monthly", // monthly=月卡, vip=VIP, employee=员工, free=免费 "expire_time": "2026-12-31T23:59:59+08:00", "remaining_times": null, // 次卡剩余次数 "discount_rate": 1.0, // 折扣率 "free_hours": 0 // 免费时长 } // 计费计算（出场时计算费用） POST /api/v1/gate/billing/calculate { "plate_number": "闽A12345", "entry_time": "2026-09-15T08:00:00+08:00", "exit_time": "2026-09-15T10:30:00+08:00", "parking_lot_id": "PLOT_001", "vehicle_type": "car" } // 响应 { "duration_minutes": 150, "free_minutes": 30, "billable_minutes": 120, "original_amount": 10.00, "discount_amount": 0.00, "final_amount": 10.00, "currency": "CNY", "billing_rule_id": "RULE_001" }

// 事件上报（道闸→平台） POST /api/v1/gate/events { "event_id": "EVT_20260915_000001", "gate_id": "GATE_001", "event_type": "fault", // fault=故障, alarm=告警, info=信息 "event_code": "GATE_F_001", // 故障码 "event_name": "道闸电机过载", "severity": "high", // low=低, medium=中, high=高, critical=紧急 "description": "道闸电机电流超过阈值，可能存在机械故障", "timestamp": "2026-09-15T10:00:00+08:00", "device_status": { "motor_current": 15.2, "motor_temp": 85, "power_voltage": 220 } } // 告警级别定义 // critical=紧急（安全事故，立即处理）：防砸失效、冲卡、设备冒烟 // high=高（影响运营，1小时内处理）：道闸故障、识别失效、网络中断 // medium=中（影响体验，4小时内处理）：识别率下降、计费异常、设备温度高 // low=低（不影响运营，24小时内处理）：设备离线恢复、日志告警、版本更新

// 设备注册 POST /api/v1/gate/devices/register { "device_id": "GATE_001", "device_type": "gate", // gate=道闸, camera=摄像头, loop=地感, infrared=红外 "vendor": "jieshun", // 厂商 "model": "JS-PB-001", "firmware_version": "v2.3.1", "ip_address": "192.168.1.100", "port": 8080, "protocol": "tcp_json", // 协议类型 "parking_lot_id": "PLOT_001", "location": "入口1号车道" } // 设备心跳 POST /api/v1/gate/devices/heartbeat { "device_id": "GATE_001", "timestamp": 1694736000000, "status": "online", "cpu_usage": 23.5, "memory_usage": 45.2, "network_latency": 15 } // 固件升级 POST /api/v1/gate/devices/{device_id}/upgrade { "firmware_url": "https://cdn.example.com/firmware/v2.4.0.bin", "firmware_version": "v2.4.0", "md5": "abc123...", "upgrade_mode": "auto" // auto=自动, manual=手动 }

// 道闸适配器标准接口 interface IGateAdapter { // ===== 基础信息 ===== getVendor(): string; // 获取厂商名称 getModel(): string; // 获取设备型号 getProtocol(): string; // 获取通信协议 getVersion(): string; // 获取固件版本 // ===== 连接管理 ===== connect(config: DeviceConfig): Promise; // 连接设备 disconnect(): Promise; // 断开连接 isConnected(): boolean; // 连接状态 reconnect(): Promise; // 重连 // ===== 车牌识别 ===== recognizePlate(image: Buffer): Promise; // 车牌识别 getRecognizeConfig(): RecognizeConfig; // 获取识别配置 setRecognizeConfig(config: RecognizeConfig): boolean; // 设置识别配置 // ===== 道闸控制 ===== openGate(reason: string, plate?: string): Promise; // 开闸 closeGate(): Promise; // 关闸 stopGate(): Promise; // 停止 getGateStatus(): Promise; // 获取状态 // ===== 通行记录 ===== getRecords(filter: RecordFilter): Promise; // 查询记录 onRecord(callback: (record: Record) => void): void; // 监听新记录 syncRecords(): Promise; // 同步本地记录到云端 // ===== 白名单/计费 ===== checkWhitelist(plate: string): Promise; // 白名单查询 calculateBilling(entry: Date, exit: Date, plate: string): Promise; // 计费计算 syncWhitelist(): Promise; // 同步白名单 // ===== 事件告警 ===== onEvent(callback: (event: GateEvent) => void): void; // 监听事件 getEvents(filter: EventFilter): Promise; // 查询历史事件 acknowledgeEvent(eventId: string): boolean; // 确认告警 // ===== 设备管理 ===== getDeviceInfo(): DeviceInfo; // 获取设备信息 getDeviceStatus(): DeviceStatus; // 获取设备状态 reboot(): Promise; // 远程重启 upgradeFirmware(url: string, md5: string): Promise; // 固件升级 } // 适配器注册中心 class AdapterRegistry { register(vendor: string, adapter: IGateAdapter): void; // 注册适配器 unregister(vendor: string): void; // 注销适配器 getAdapter(vendor: string): IGateAdapter | null; // 获取适配器 listAdapters(): string[]; // 列出所有适配器 getByGateId(gateId: string): IGateAdapter | null; // 按道闸ID获取 }

// 车辆入场状态机 enum EntryState { ARRIVED, // 已到达识别区 PLATE_RECOGNIZED, // 车牌已识别 WHITELIST_CHECKED, // 白名单已查询 PARKING_ASSIGNED, // 车位已分配 GATE_OPENED, // 道闸已开 ENTERED, // 已入场 NAVIGATING, // 导航中 ARRIVED_PARKING, // 已到达车位 LOCK_DOWN, // 地锁已降下 PARKED, // 已停好 CHARGING, // 充电中 COMPLETED // 流程完成 } // 状态转换规则（严格时序，不可跳跃） stateMachine.on('ARRIVED', async (ctx) => { const result = await recognizePlate(ctx.image); if (result.confidence >= 0.9) { ctx.plate = result.plate_number; return 'PLATE_RECOGNIZED'; } else if (result.confidence >= 0.8) { // 二次确认：多帧融合 const result2 = await recognizePlateMultiFrame(ctx.images); if (result2.confidence >= 0.9) { ctx.plate = result2.plate_number; return 'PLATE_RECOGNIZED'; } } // 置信度不足，人工审核 await manualReview(ctx); return ctx.approved ? 'PLATE_RECOGNIZED' : 'REJECTED'; }); // 失败补偿：某环节失败自动重试，重试失败触发回滚 async function executeWithCompensation(state, action, maxRetries = 3) { for (let i = 0; i < maxRetries; i++) { try { const result = await action(); if (result.success) return result; // 失败，等待后重试 await sleep(500 * (i + 1)); // 指数退避 } catch (e) { await sleep(500 * (i + 1)); } } // 重试失败，触发回滚 await rollback(state); // 触发告警 await triggerAlarm('LINKAGE_FAILED', state); throw new Error(`State ${state} failed after ${maxRetries} retries`); } // 回滚机制：根据当前状态回滚已执行的操作 async function rollback(currentState) { switch (currentState) { case 'LOCK_DOWN': // 地锁降下失败，升起地锁，释放车位 await raiseLock(ctx.lockId); await releaseParking(ctx.parkingId); break; case 'GATE_OPENED': // 道闸已开但后续失败，保持道闸开（安全优先），人工介入 await triggerAlarm('MANUAL_INTERVENTION', 'GATE_OPENED_ROLLBACK'); break; // ... 其他状态的回滚逻辑 } }