ViewModels/MainViewModel.cs

@@ -78,6 +78,7 @@ namespace MembranePoreTester.ViewModels
                 set => SetProperty(ref _pressButtonText, value);
             }
 
+
             public bool EnableStatus
             {
                 get => _enableStatus;
@@ -85,12 +86,17 @@ namespace MembranePoreTester.ViewModels
                 {
                     if (SetProperty(ref _enableStatus, value))
                     {
-                        // 当 EnableStatus 变化时，通知依赖的属性也变化
+                        // 当设备停止运行时，停止孔分布自动采集
+                        if (!value)
+                        {
+                            PoreDistributionVM?.StopCollecting();
+                        }
                         OnPropertyChanged(nameof(EnableStatusText));
                         OnPropertyChanged(nameof(EnableStatusColor));
                     }
                 }
             }
+
             // 使能状态显示文本
             public string EnableStatusText => EnableStatus ? "运行中" : "未启动";
 
@@ -113,23 +119,25 @@ namespace MembranePoreTester.ViewModels
 
             private double _pressureUpperLimit;
             private double _pressureRate;
+            // 防止从PLC读取时触发校验弹窗
+            private bool _suppressPressureValidation = false;
 
             public double PressureUpperLimit
             {
                 get => _pressureUpperLimit;
                 set
                 {
-                    if (SetProperty(ref _pressureUpperLimit, value))
+                    // 如果不是从PLC读取（即用户交互或程序主动设置），先校验再设置
+                    if (!_suppressPressureValidation && HighLowPressure.Contains("低压") && value > 200)
+                    {
+                        MessageBox.Show("低压模式,加压上限不能超过200!");
+                        return;
+                    }
+
+                    bool changed = SetProperty(ref _pressureUpperLimit, value);
+                    // 仅在非抑制模式下将改变写回PLC，避免把PLC读回的值再次写入造成循环
+                    if (changed && !_suppressPressureValidation)
                     {
-                        if (HighLowPressure == "低压")
-                        {
-                            if (value > 200)
-                            {
-                                MessageBox.Show("低压模式,加压上限不能超过200!");
-                                return;
-                            }
-                        }
-                        // 值改变时写入PLC
                         _ = _plcService.WriteMultipleRegistersAsync(_plcConfig.PressureUpperLimit, (float)value);
                     }
                 }
@@ -161,8 +169,11 @@ namespace MembranePoreTester.ViewModels
 
                     Application.Current.Dispatcher.Invoke(() =>
                     {
+                        // 在将PLC读取的值赋回到属性时，抑制用户校验提示和避免回写PLC
+                        _suppressPressureValidation = true;
                         PressureUpperLimit = upperLimit;
                         PressureRate = rate;
+                        _suppressPressureValidation = false;
                     });
                 }
                 catch (Exception ex)

ViewModels/PoreDistributionViewModel.cs

@@ -407,17 +407,33 @@ namespace MembranePoreTester.ViewModels
         // 修改 Calculate 方法：
         private void Calculate()
         {
-            var cleanedPoints = CleanDataPoints(Record.DataPoints);
-            if (Record.DataPoints.Count < 2) return;
+            // 先清洗数据并替换到绑定的集合中，确保DataGrid和曲线显示清洗后的数据
+            var originalPoints = Record.DataPoints.ToList();
+            var cleanedPoints = CleanDataPoints(originalPoints);
 
+            if (cleanedPoints.Count < 2)
+            {
+                MessageBox.Show("有效数据点不足，至少需要 2 个数据点进行计算。");
+                return;
+            }
+
+            int invalidCount = originalPoints.Count - cleanedPoints.Count;
+
+            // 用清洗后的点替换 ObservableCollection 的内容（触发UI更新）
+            Record.DataPoints.Clear();
+            foreach (var p in cleanedPoints)
+                Record.DataPoints.Add(p);
+
+            // 刷新曲线以显示清洗后的数据
+            UpdatePlot();
+
+            // 使用清洗后的集合进行计算
             AveragePoreSize = PoreDistributionAnalysis.CalculateAveragePore(
                 Record.DataPoints, Record.PressureUnit, Record.Liquid);
 
             RangePercentage = PoreDistributionAnalysis.CalculatePoreRangePercentage(
                 Record.DataPoints, Record.PressureUnit, Record.Liquid, LowerPore, UpperPore);
 
-            // 可选：提示用户过滤了多少无效点
-            int invalidCount = Record.DataPoints.Count - cleanedPoints.Count;
             if (invalidCount > 0)
             {
                 MessageBox.Show($"已自动过滤 {invalidCount} 个无效数据点");