diff --git a/HealthMonitor.Service/Resolver/PregnancyHeartRateResolver.cs b/HealthMonitor.Service/Resolver/PregnancyHeartRateResolver.cs
index 2740b4d..d93b85b 100644
--- a/HealthMonitor.Service/Resolver/PregnancyHeartRateResolver.cs
+++ b/HealthMonitor.Service/Resolver/PregnancyHeartRateResolver.cs
@@ -167,7 +167,7 @@ namespace HealthMonitor.Service.Resolver
                                 /// 设置高频状态
                                 _logger.LogInformation($"{heartRate.Serialno} 进入高频心率启动状态 timeDiffInSeconds {timeDiffInSeconds},highFreqSampleInterval:{highFreqSampleInterval}");
                                 // 设置高频状态
-                                var freqFirstPhr = phr.OrderByDescending(i => i.Timestamp).First();
+                                var freqFirstPhr = phr.OrderByDescending(i => i.LastUpdate).First();
                                 await _deviceCacheMgr.SetPregnancyHeartRateFreqStatusAsync(heartRate.Serialno, freqFirstPhr);
                                 //phrFreqstatus = await _deviceCacheMgr.GetPregnancyHeartRateFreqStatusAsync(heartRate.Serialno);
                             }
@@ -175,7 +175,7 @@ namespace HealthMonitor.Service.Resolver
                             /// 取连续正常次数正常值的平均值,推送到api/v1/open/OpenIot/SetFetalHeartRateConfig
                             #region 检查是否连续12个值都是正常的
                             // 获取最近连续正常次数个心率记录
-                            var lastPhr = phr.OrderByDescending(i => i.Timestamp).Take(stopHighFreqSampleCount).ToList();
+                            var lastPhr = phr.OrderByDescending(i => i.LastUpdate).Take(stopHighFreqSampleCount).ToList();
 
                             // 检查是否连续12个值都是正常的
                             if (lastPhr.All(i => i.PregnancyHeartRate >= triggerHighFreqLow && i.PregnancyHeartRate <= triggerHighFreqHigh))
@@ -188,6 +188,11 @@ namespace HealthMonitor.Service.Resolver
                                 _logger.LogInformation($"{heartRate.Serialno} 高频状态已经持续{(FreqStatsEnd - phrFreqstatus!.LastUpdate).TotalSeconds} 秒，连续 {stopHighFreqSampleCount} 次采样心率正常，将下发指令");
                                 await SaveAndPushFreqFetalHeartRateAsync(heartRate, commonPHR, upperAlarmThreshold, lowerAlarmThreshold, avgPhr, DateTimeUtil.ConvertToTimeStamp(phrFreqstatus!.LastUpdate).ToString());
 
+                                // 删除高频状态的首条记录
+                                await _deviceCacheMgr.DelPregnancyHeartRateFreqStatusAsync(heartRate.Serialno);
+
+                                _logger.LogInformation($"{heartRate.Serialno} 连续正常结束高频心率状态, timeDiffInSeconds {timeDiffInSeconds},highFreqSampleInterval:{highFreqSampleInterval}，高频状态持续{(firstTwoPhr[1] - phrFreqstatus!.LastUpdate).TotalSeconds} 秒");
+
                             }
                             #endregion
                         }
@@ -201,8 +206,8 @@ namespace HealthMonitor.Service.Resolver
                                 /// 取所有值的平均值，推送胎心数据到api/v1/open/OpenIot/SetFetalHeartRateConfig
                                 if (highFreqSampleTimes == 0)
                                 {
-                                    var avgPhr = phr.OrderByDescending(i => i.Timestamp)
-                                           .Where(i => i.Timestamp >= phrFreqstatus?.Timestamp)
+                                    var avgPhr = phr.OrderByDescending(i => i.LastUpdate)
+                                           .Where(i => i.LastUpdate >= phrFreqstatus?.LastUpdate)
                                            .Skip(1) // 去除首条
                                            .Where(i => i.PregnancyHeartRate < triggerHighFreqLow || i.PregnancyHeartRate > triggerHighFreqHigh)
                                            .Select(i => i.PregnancyHeartRate).Average();
@@ -225,12 +230,12 @@ namespace HealthMonitor.Service.Resolver
                                     var filterPhr = phr
                                           .Where(i => i.LastUpdate >= phrFreqstatus?.LastUpdate);
 
-
-
                                     var avgPhr = filterPhr
-                                          .Skip(1) // 去除首条
-                                          .Where(i => i.PregnancyHeartRate < triggerHighFreqLow || i.PregnancyHeartRate > triggerHighFreqHigh)
-                                          .Select(i => i.PregnancyHeartRate).Average();
+                                         .OrderByDescending(i => i.LastUpdate)
+                                         .Skip(1) // 去除首条
+                                         .Take(12) // 计算最后12条
+                                          //.Where(i => i.PregnancyHeartRate < triggerHighFreqLow || i.PregnancyHeartRate > triggerHighFreqHigh)
+                                         .Select(i => i.PregnancyHeartRate).Average();
                                     // 推送胎心数据到 api/v1/open/OpenIot/SetFetalHeartRateConfig
                                     // 计算一般心率得到胎心系数
                                     //await SaveAndPushFetalHeartRateAsync(heartRate, upperAlarmThreshold, lowerAlarmThreshold, avgPhr);
@@ -246,7 +251,7 @@ namespace HealthMonitor.Service.Resolver
                                 // 删除高频状态的首条记录
                                 await _deviceCacheMgr.DelPregnancyHeartRateFreqStatusAsync(heartRate.Serialno);
 
-                                _logger.LogInformation($"{heartRate.Serialno} 结束高频心率状态 timeDiffInSeconds {timeDiffInSeconds},highFreqSampleInterval:{highFreqSampleInterval}，高频状态持续{(firstTwoPhr[1] - phrFreqstatus!.LastUpdate).TotalSeconds} 秒");
+                                _logger.LogInformation($"{heartRate.Serialno} 超时结束高频心率状态 timeDiffInSeconds {timeDiffInSeconds},highFreqSampleInterval:{highFreqSampleInterval}，高频状态持续{(firstTwoPhr[1] - phrFreqstatus!.LastUpdate).TotalSeconds} 秒");
                             }
                             // 正常心率
                             else