[参考译文] AFE49I30：无法从 ECG/PPG 传感器计算心率计数(AFE49I30传感器)

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https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1205743/afe49i30-unable-to-calculate-heart-rate-counts-from-ecg-ppg-sensor-afe49i30-sensor

器件型号：AFE49I30

我正在尝试使用 PPG/ECG 传感器计算心率 (我正在使用 AFE49I30传感器) 使用 Xamarin 表单应用程序。

我有一个蓝牙设备、该蓝牙设备使用 Plugin.BLE 软件包连接至 Xamarin Form 应用。
连接后、我将获得蓝牙设备的所有服务和服务特征。
PPG/ECG 的特性之后验证了电路。我得到的是 PPG/ECG 字节数组。现在、我该怎么做才能从该字节数组中获取心率计数？

下面显示了一些代码屏幕截图、以获取心率字节数组。

PPG 使用以下代码获取字节数组数据：

public async void GetPPGLiveData()
        {
            if (App.device != null)
            {
                var temp = App.DeviceDetailsModel.FirstOrDefault(a => a.DeviceService.Id.StartsWith("00005c00"));
                var PPGservices = await App.device.GetServiceAsync(new Guid(temp.DeviceService.Id));

                if (PPGservices != null)
                {
                    var PPGcharacter = temp.DeviceServiceCharacs.FirstOrDefault(a => a.Id.StartsWith("00005c02"));
                    var PPGList = await PPGservices.GetCharacteristicAsync(new Guid(PPGcharacter.Id));

                    PPGList.ValueUpdated += (o, args) =>
                    {
                        var receivedBytes = args.Characteristic.Value;

                        Xamarin.Essentials.MainThread.BeginInvokeOnMainThread(async () =>
                        {
                           //Need to write some Heart Rate calculation Logic.
                            
                        });
                    };
                    await PPGList.StartUpdatesAsync();
                }
            }
        }

ECG 使用以下代码获取字节数组数据：

public async void GetECGLiveData()
        {
            if (App.device != null)
            {
                var temp = App.DeviceDetailsModel.FirstOrDefault(a => a.DeviceService.Id.StartsWith("00005c00"));
                var ECGservices = await App.device.GetServiceAsync(new Guid(temp.DeviceService.Id));

                if (ECGservices != null)
                {
                    var ECGcharacter = temp.DeviceServiceCharacs.FirstOrDefault(a => a.Id.StartsWith("00005c01"));
                    var ECGList = await ECGservices.GetCharacteristicAsync(new Guid(ECGcharacter.Id));

                    ECGList.ValueUpdated += (o, args) =>
                    {
                        var receivedBytes = args.Characteristic.Value;

                        Xamarin.Essentials.MainThread.InvokeOnMainThreadAsync(async () =>
                        {

                            //Need to Write Some calculation logic here.
                        });
                    };
                    await ECGList.StartUpdatesAsync();
                }
                
            }
        }

2 年多前