Models/AppConfig.cs

@@ -93,6 +93,6 @@ public class CalibrationCoefficients
     public ushort ResistanceCoefficient { get; set; }
 
     //public double ThermalConductivityCorrection { get; set; } = 69;//乙二醇
-    public double ThermalConductivityCorrection { get; set; } = 100;//乙二醇
-    public double ThermalDiffusivityCorrection { get; set; } = 19.9;
+    public double ThermalConductivityCorrection { get; set; } = 28;//乙二醇
+    public double ThermalDiffusivityCorrection { get; set; } = 0.59;
 }

Services/LanScpiSocket.cs

@@ -94,7 +94,7 @@ namespace ASTM_D7896_Tester.Services
             await SendCommandAsync($"VOLT:DC:RANG {DefaultVoltageRange}");
 
             // 3. 设置积分时间 0.02PLC（最快速度）
-            await SendCommandAsync("VOLT:DC:NPLC 0.02");
+            await SendCommandAsync("VOLT:DC:NPLC 0.1");
 
             // 4. 关闭自动归零（提高速度）
             await SendCommandAsync("VOLT:DC:ZERO:AUTO OFF");

ViewModels/D7896ViewModel.cs

@@ -91,7 +91,7 @@ public partial class D7896ViewModel : ObservableObject
     private const double EulerGamma = 0.5772156649;   // 欧拉常数
     //private const double WireRadius = 0.00003;        // 铂丝半径 (0.03 mm)
     [ObservableProperty] private double _sampleDensity = 1000.0;   // 新增，密度默认值1000 kg/m³（水）
-    int samples = 1000; // 1秒 * 1000点/秒
+    int samples = 400; // 1秒 * 1000点/秒
     double heatingDuration = 1;        // 加热时间 0.8 秒（需与您的加热脉冲宽度一致）
     double totalDuration = 2;            // 总采样时间（加热 + 冷却）
     public D7896ViewModel()
@@ -579,6 +579,7 @@ public partial class D7896ViewModel : ObservableObject
             lambda = _config.TestParameters.FixedLambda;
             Logger.Log($"使用固定 lambda={lambda:F6} W/(m·K)");
         }
+        lambda *= _config.TestParameters.CalibrationCoefficients.ThermalDiffusivityCorrection;
         Logger.Log($"constantCurrent(avg)={avgCurrent:E6} A, avgResistance={avgResistance:F6} Ω, powerPerLength={powerPerLength:E6} W/m, 斜率 B = {slope:F5}");
 
         // 计算热扩散率