HarmonyOS5 智能手表专项：心率持续监测下的7天续航达标测试方案

以下为 ​​HarmonyOS 5 智能手表7天续航测试方案​​，专为持续心率监测场景设计的完整实现代码：

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1. 系统架构

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2. 核心优化模块

2.1 自适应心率采样

// hr-sampler.ets
class HeartRateSampler {
  private static readonly BASELINE_RATE = 30; // 默认30秒间隔
  private static lastHr: number = 60;

  static async getNextInterval(): Promise<number> {
    const [hr, motion] = await Promise.all([
      HeartRateSensor.getCurrent(),
      MotionSensor.getActivityLevel()
    );
    
    // 动态调整采样间隔
    return hr < 50 && motion === 'rest' ? 60 :  // 静息状态延长间隔
           hr > 120 || motion === 'active' ? 5 : // 运动状态高频采样
           this.BASELINE_RATE;
  }

  static async startMonitoring(): Promise<void> {
    while (true) {
      const interval = await this.getNextInterval();
      const hr = await HeartRateSensor.read();
      await this.processHr(hr);
      await sleep(interval * 1000);
    }
  }
}

2.2 低功耗数据处理

// hr-processor.ets
class HeartRateProcessor {
  static async process(hr: number): Promise<ProcessedHr> {
    return {
      value: hr,
      timestamp: Date.now(),
      trend: await this.calculateTrend(hr),
      anomaly: await this.checkAnomaly(hr)
    };
  }

  private static async calculateTrend(hr: number): Promise<'rising'|'falling'|'stable'> {
    const history = await HrHistory.getLast(5);
    if (history.length < 3) return 'stable';
    
    const slope = (hr - history[0].value) / (history.length * 2);
    return Math.abs(slope) < 1 ? 'stable' : 
           slope > 0 ? 'rising' : 'falling';
  }
}

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3. 续航保障机制

3.1 动态电源管理

// power-manager.ets
class HrPowerManager {
  static async optimizeForLongRun(): Promise<void> {
    await PowerProfile.set({
      cpu: { maxFreq: 800000 }, // 限制CPU频率
      sensor: { 
        hr: { mode: 'adaptive' },
        motion: { interval: 2000 } 
      },
      display: { offTimeout: 5000 }
    });
    
    await this.enableUltraLowPowerMode();
  }

  private static async enableUltraLowPowerMode(): Promise<void> {
    await PowerDomainManager.shutdown([
      'gpu',
      'unused_cores',
      { domain: 'bluetooth', retention: true }
    ]);
  }
}

3.2 内存优化处理

// memory-optimizer.ets
class HrMemoryOptimizer {
  private static readonly MAX_HISTORY = 100;
  
  static async processDataPoint(data: HrData): Promise<void> {
    await this.rotateHistory();
    await this.compressData(data);
  }

  private static async rotateHistory(): Promise<void> {
    const count = await HrHistory.count();
    if (count > this.MAX_HISTORY) {
      await HrHistory.deleteOldest(10);
    }
  }
}

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4. 测试验证框架

4.1 续航模拟器

// endurance-simulator.ets
class SevenDaySimulator {
  static async run(): Promise<TestResult> {
    const startTime = Date.now();
    let battery = 100; // 初始电量%
    
    while (battery > 0 && Date.now() - startTime < 604800000) { // 7天
      const hr = await this.simulateHeartRate();
      const powerDraw = await this.calculatePowerDraw(hr);
      
      battery -= powerDraw / 3600 * 100; // 每秒耗电百分比
      await sleep(1000); // 实时模拟
    }
    
    return {
      achievedHours: (Date.now() - startTime) / 3600000,
      batteryLeft: battery,
      isPassed: (Date.now() - startTime) >= 168 * 3600000 // 168小时
    };
  }
}

4.2 实时功耗监控

// power-monitor.ets
@Component
struct LivePowerView {
  @State currentPower: number = 0;
  @State remainingHours: number = 0;
  
  build() {
    Column() {
      Gauge({
        value: this.currentPower,
        max: 50, // 50mW为阈值
        title: '实时功耗 (mW)'
      })
      Text(`预估剩余: ${this.remainingHours.toFixed(1)}小时`)
    }
    .onAppear(() => {
      setInterval(async () => {
        this.currentPower = await PowerMonitor.getNow();
        this.remainingHours = await this.calculateRuntime();
      }, 5000);
    })
  }
}

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5. 异常处理机制

5.1 心率异常警报

// hr-alert.ets
class HeartRateAlert {
  static async checkAndNotify(hr: number): Promise<void> {
    if (await this.isAbnormal(hr)) {
      await Notifier.alert({
        title: '心率异常',
        message: `当前心率: ${hr} (正常范围: ${this.getNormalRange()})`
      });
      
      if (await this.isCritical(hr)) {
        await EmergencyService.notifyCaregiver();
      }
    }
  }

  private static async isAbnormal(hr: number): Promise<boolean> {
    const baseline = await UserProfile.getRestingHr();
    return hr < baseline * 0.6 || hr > baseline * 1.5;
  }
}

5.2 低电量策略

// low-battery.ets
class LowBatteryHandler {
  static async enablePowerSave(): Promise<void> {
    const level = await Battery.getLevel();
    if (level < 20) {
      await HeartRateSampler.setInterval(60); // 降频采样
      await Display.setBrightness(30);
      await NetworkManager.disconnectNonCritical();
    }
  }
}

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6. 数据分析工具

6.1 心率变异性分析

// hrv-analyzer.ets
class HRVAnalyzer {
  static async analyzeLastHour(): Promise<HRVReport> {
    const data = await HrHistory.getLastHour();
    const intervals = data.map((d, i) => 
      i > 0 ? d.timestamp - data[i-1].timestamp : 0
    ).slice(1);
    
    return {
      sdnn: this.calculateSDNN(intervals),
      rmssd: this.calculateRMSSD(intervals),
      pnn50: this.calculatePNN50(intervals)
    };
  }
}

6.2 睡眠阶段识别

// sleep-stage.ets
class SleepStageDetector {
  static async detectStage(hr: number, motion: number): Promise<SleepStage> {
    const model = await SleepModel.load();
    return model.predict({
      heartRate: hr,
      motionLevel: motion,
      timeOfDay: await Clock.getHour()
    });
  }
}

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7. 关键性能指标

指标	目标值	测量方法
平均功耗	≤0.8mW (心率监测)	7天持续记录
心率数据完整性	≥98%	有效样本统计
异常心率响应延迟	<10秒	模拟异常测试
睡眠模式功耗	≤0.3mW	实验室测量

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8. 生产环境部署

8.1 动态配置加载

// configs/hr-monitor.json
{
  "default": {
    "sampleInterval": 30,
    "emergencyThreshold": {
      "bradycardia": 40,
      "tachycardia": 150
    }
  },
  "powerSave": {
    "sampleInterval": 60,
    "enableDuringSleep": true
  }
}

8.2 OTA策略更新

// ota-updater.ets
class HrConfigUpdater {
  static async checkUpdates(): Promise<void> {
    const newConfig = await CloudConfig.fetch('hr_monitoring_v3');
    if (newConfig.version > this.currentVersion) {
      await this.applyConfig(newConfig);
      await UserNotifier.notifyUpdate();
    }
  }
}

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9. 完整测试流程

9.1 7天续航测试

// endurance-test.ets
describe('7天续航测试', () => {
  beforeAll(async () => {
    await BatterySimulator.setCapacity(300); // 300mAh
    await HrPowerManager.optimizeForLongRun();
  });

  it('应持续运行168小时+', async () => {
    const result = await SevenDaySimulator.run();
    expect(result.achievedHours).toBeGreaterThanOrEqual(168);
  }, 604800000); // 7天超时

  it('睡眠模式功耗应≤0.3mW', async () => {
    await SleepMode.enable();
    const power = await PowerMonitor.measureDuring(() => 
      sleep(3600000) // 测量1小时
    );
    expect(power.avg).toBeLessThan(0.3);
  });
});

9.2 异常场景测试

// anomaly-test.ets
describe('异常心率响应', () => {
  it('心动过缓应10秒内报警', async () => {
    await HrSimulator.setRate(35); // 模拟心动过缓
    const start = Date.now();
    let alerted = false;
    
    Alert.on('new', () => { alerted = true });
    while (Date.now() - start < 20000 && !alerted) {
      await sleep(100);
    }
    
    expect(alerted).toBeTruthy();
    expect(Date.now() - start).toBeLessThan(10000);
  });
});

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10. 可视化监控

10.1 实时心率仪表盘

// hr-dashboard.ets
@Component
struct HeartRateDashboard {
  @State hr: number = 0;
  @State trend: string = 'stable';
  
  build() {
    Column() {
      Gauge({
        value: this.hr,
        min: 40,
        max: 160,
        title: '实时心率'
      })
      TrendIndicator(this.trend)
    }
    .onAppear(() => {
      setInterval(async () => {
        const data = await HeartRateProcessor.process(await HeartRateSensor.read());
        this.hr = data.value;
        this.trend = data.trend;
      }, 1000);
    })
  }
}

10.2 续航预测图表

// endurance-chart.ets
@Component
struct BatteryLifeChart {
  @Prop history: PowerRecord[];
  
  build() {
    LineChart({
      series: [{
        name: '电量消耗',
        data: this.history.map((r, i) => ({
          x: i,
          y: r.power
        }))
      }],
      trendLine: true
    })
  }
}

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通过本方案可实现：

1. ​​7天+​​ 持续心率监测续航
2. ​​动态​​ 采样频率调整
3. ​​智能​​ 异常心率响应
4. ​​精准​​ 电量消耗预测