ASTM D7896-19瞬态热线法.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFramework>net10.0-windows7.0</TargetFramework>
+    <TargetFramework>net8.0-windows7.0</TargetFramework>
     <RootNamespace>ASTM_D7896_19瞬态热线法</RootNamespace>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
@@ -16,11 +16,11 @@
   <ItemGroup>
     <PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.2" />
     <PackageReference Include="EPPlus" Version="7.0.3" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="10.0.8" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="9.0.16" />
     <PackageReference Include="Microsoft.Extensions.Configuration" Version="10.0.8" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="10.0.8" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="10.0.8" />
-    <PackageReference Include="NModbus4.NetCore" Version="4.0.0" />
+    <PackageReference Include="NModbus4.NetCore" Version="3.0.0" />
     <PackageReference Include="OxyPlot.Wpf" Version="2.2.0" />
     <PackageReference Include="PdfSharpCore" Version="1.3.67" />
   </ItemGroup>

Models/AppConfig.cs

@@ -46,7 +46,7 @@ public class TestParameters
     public int MeasurementCount { get; set; } = 10;
     [Range(5, 300)]
     public int IntervalSeconds { get; set; } = 30;
-    public double PlatinumWireLength { get; set; } = 0.04; // 默认 5.6 cm
+    public double PlatinumWireLength { get; set; } = 0.040; // 默认 5.6 cm
     public double PlatinumWireDiameter { get; set; } = 0.00006;
     public string ReportOutputPath { get; set; } = "Reports\\";
 
@@ -91,6 +91,6 @@ public class CalibrationCoefficients
     public ushort PressureProtection { get; set; }
     public ushort TemperatureCoefficient { get; set; }
     public ushort ResistanceCoefficient { get; set; }
-    public double ThermalConductivityCorrection { get; set; } = 37;//蒸馏水   比热率修正
+    public double ThermalConductivityCorrection { get; set; } = 47.305349f;//蒸馏水   比热率修正
-    public double ThermalDiffusivityCorrection { get; set; } = 0.45;//导热率修正
+    public double ThermalDiffusivityCorrection { get; set; } = 0.312912;//导热率修正
 }

ViewModels/D7896ViewModel.cs

@@ -12,11 +12,14 @@ using PdfSharpCore.Pdf;
 using System;
 using System.Collections.ObjectModel;
 using System.IO;
+using System.IO.Ports;
 using System.Linq;
 using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
 using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Threading;
 
 namespace ASTM_D7896_Tester.ViewModels;
 
@@ -52,7 +55,7 @@ public partial class D7896ViewModel : ObservableObject
     [ObservableProperty] private PlotModel _temperatureCurveModel;
 
     // UI 绑定属性 (与之前一致)
-    public ObservableCollection<string> ReferenceLiquids { get; } = new() { "蒸馏水" };
+    public ObservableCollection<string> ReferenceLiquids { get; } = new() { "蒸馏水", "甲苯", "乙二醇" };
     [ObservableProperty] private string _sampleId = "未命名样品";
     [ObservableProperty] private double _testTemperature = 25.0;
     [ObservableProperty] private string _testDateTime = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
@@ -121,6 +124,9 @@ public partial class D7896ViewModel : ObservableObject
         _th1953Ustd = new Th1963LanService();
 
         StartBackgroundMonitoring();
+
+        Task.Run(() => initPort());
+
     }
 
     private async void StartBackgroundMonitoring()
@@ -143,7 +149,6 @@ public partial class D7896ViewModel : ObservableObject
             Application.Current?.Dispatcher.Invoke(() => ChamberPressure = rawPressure);
 
             float rawTemp = await _plcService.ReadFloatAsync(_config.PlcRegisterAddresses.Temperature);
-            rawTemp *= 1.0435f;
             Application.Current?.Dispatcher.Invoke(() => CurrentTestTemperature = rawTemp);
         }
         catch { }
@@ -159,7 +164,8 @@ public partial class D7896ViewModel : ObservableObject
     //    }
     //    catch { return 0; }
     //}
-
+    // 在类成员变量区域添加
+    private int currentSettleMs = 200;   // 电流稳定等待时间（毫秒）
     [RelayCommand]
     private async Task StartTestAsync()
     {
@@ -200,7 +206,7 @@ public partial class D7896ViewModel : ObservableObject
         {
 
 
-
+            BtnSet();
 
 
             await _th1963Ustd.ConnectAsync("192.168.1.12", 45454); // 改为实际IP
@@ -304,7 +310,7 @@ public partial class D7896ViewModel : ObservableObject
                 double[] ustdBase = await _th1963Ustd.FetchBatchAsync();
                 double[] uptBase = await _th1953Ustd.FetchBatchAsync();
 
-                double dynamicR0 = 1.476979; // 默认值
+                double dynamicR0 = 1.49; // 默认值
                 if (ustdBase != null && ustdBase.Length > 0 && uptBase != null && uptBase.Length > 0)
                 {
                     double sumR0 = 0; int cnt = 0;
@@ -335,21 +341,25 @@ public partial class D7896ViewModel : ObservableObject
                 await _th1963Ustd.PrepareBatchAsync(samples);
                 await _th1953Ustd.PrepareBatchAsync(samples);
 
+
+
                 await _plcService.WriteCoilAsync(_config.PlcRegisterAddresses.StartCommand, true);
-                try { await Task.Delay(5, _testCts.Token); } catch (OperationCanceledException) { break; }
+                // 等待电流稳定（不触发采集）
-
+                try { await Task.Delay(currentSettleMs, _testCts.Token); } catch (OperationCanceledException) { break; }
+                // 电流稳定后，触发采集
                 await Task.WhenAll(_th1963Ustd.TriggerAsync(), _th1953Ustd.TriggerAsync());
-
+                // 继续加热剩余时间（加热总时间 = 稳定等待时间 + 有效加热时间）
                 try { await Task.Delay((int)(heatingDuration * 1000), _testCts.Token); } catch (OperationCanceledException) { break; }
                 await _plcService.WriteCoilAsync(_config.PlcRegisterAddresses.StartCommand, false);
 
+
                 int remainingMs = (int)((totalDuration - heatingDuration) * 1000) + 100;
                 try { await Task.Delay(remainingMs, _testCts.Token); } catch (OperationCanceledException) { break; }
 
                 double[] ustd = await _th1963Ustd.FetchBatchAsync();
                 double[] upt = await _th1953Ustd.FetchBatchAsync();
 
-                if (dynamicR0 == 1.476979) // 基线无效
+                if (dynamicR0 == 1.49) // 基线无效
                 {
                     double sumR0 = 0; int cnt = 0;
                     for (int j = 2; j < Math.Min(6, ustd.Length); j++)
@@ -391,7 +401,7 @@ public partial class D7896ViewModel : ObservableObject
 
                 // ---- 异常值检测 ----
                 bool isOutlier = false;
-                double deviationThreshold = 0.20; // 20% 偏差阈值
+                double deviationThreshold = 0.1; // 10% 偏差阈值
 
                 if (validCount >= 2) // 至少有两个有效数据后才开始剔除
                 {
@@ -440,7 +450,7 @@ public partial class D7896ViewModel : ObservableObject
                 // 测量间隔（即使舍弃也等待，让样品恢复）
                 if (validCount < requiredCount && !_stopRequested && attemptCount < maxAttempts)
                 {
-                    try { await Task.Delay(_config.TestParameters.IntervalSeconds * 100, _testCts.Token); } catch (OperationCanceledException) { break; }
+                    try { await Task.Delay(_config.TestParameters.IntervalSeconds * 1000, _testCts.Token); } catch (OperationCanceledException) { break; }
                 }
             }
 
@@ -507,12 +517,13 @@ public partial class D7896ViewModel : ObservableObject
             }
         }
 
-        // 滑动平均平滑（窗口5）
+        // 滑动平均平滑（窗口大小改为 11）
+        int windowSize = 40;   // 原为 5
         double[] smoothDeltaT = new double[n];
         for (int i = 0; i < n; i++)
         {
-            int start = Math.Max(0, i - 2);
+            int start = Math.Max(0, i - windowSize / 2);
-            int end = Math.Min(n - 1, i + 2);
+            int end = Math.Min(n - 1, i + windowSize / 2);
             double sum = 0; int cnt = 0;
             for (int j = start; j <= end; j++)
                 if (!double.IsNaN(deltaT[j])) { sum += deltaT[j]; cnt++; }
@@ -668,34 +679,6 @@ public partial class D7896ViewModel : ObservableObject
         return timeArray.Length - 1;
     }
 
-    private void ExportMeasurementCsv(string path, double[] time, double[] ustd, double[] upt, double[] deltaT, int fitStart, int fitEnd)
-    {
-        using var sw = new StreamWriter(path, false, Encoding.UTF8);
-        sw.WriteLine("index,time,U_std,U_pt,deltaT,fitWindow");
-        int n = Math.Min(Math.Min(time.Length, ustd.Length), deltaT.Length);
-        for (int i = 0; i < n; i++)
-        {
-            bool inFit = (i >= fitStart && i <= fitEnd);
-            sw.WriteLine($"{i},{time[i]:F6},{ustd[i]:F6},{upt[i]:F6},{(double.IsNaN(deltaT[i]) ? 0 : deltaT[i]):F6},{(inFit ? 1 : 0)}");
-        }
-    }
-
-    private void ExportCandidateWindowsCsv(string path, double[] time, double[] deltaT, int startIdx, int endIdx)
-    {
-        using var sw = new StreamWriter(path, false, Encoding.UTF8);
-        sw.WriteLine("s,e,t_start,t_end,meanDelta");
-        int n = time.Length;
-        int minPts = 10;
-        for (int s = startIdx; s <= endIdx - minPts; s++)
-        {
-            for (int e = s + minPts - 1; e <= endIdx; e++)
-            {
-                double mean = deltaT.Skip(s).Take(e - s + 1).Where(x => !double.IsNaN(x)).DefaultIfEmpty(0).Average();
-                sw.WriteLine($"{s},{e},{time[s]:F6},{time[e]:F6},{mean:F6}");
-            }
-        }
-    }
-
     ///// <summary>
     ///// 最小二乘法拟合斜率 (X轴为横坐标，Y轴为纵坐标) — 用于加热段 ln(t) vs ΔT
     ///// </summary>
@@ -799,6 +782,18 @@ public partial class D7896ViewModel : ObservableObject
         AverageVolumetricHeatCapacity = Measurements.Average(m => m.VolumetricHeatCapacity);
     }
 
+    //[RelayCommand]
+    //private void Reset()
+    //{
+    //    //Measurements.Clear();
+    //    //AverageThermalConductivity = AverageThermalDiffusivity = AverageVolumetricHeatCapacity = 0;
+    //    //CurrentMeasurementIndex = 0;
+    //    //StatusMessage = "已重置";
+    //    //TestDateTime = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
+    //    //TemperatureCurveModel = null;
+
+    //}
+
     [RelayCommand]
     private void Reset()
     {
@@ -807,43 +802,20 @@ public partial class D7896ViewModel : ObservableObject
         CurrentMeasurementIndex = 0;
         StatusMessage = "已重置";
         TestDateTime = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
-        TemperatureCurveModel = null;
+
+        // 清空曲线：新建一个空白的 PlotModel 替换原来的
+        TemperatureCurveModel = new PlotModel
+        {
+            Title = "温升与冷却曲线",
+            Background = OxyColors.White
+        };
+        TemperatureCurveModel.Axes.Add(new LinearAxis { Position = AxisPosition.Bottom, Title = "时间 (s)" });
+        TemperatureCurveModel.Axes.Add(new LinearAxis { Position = AxisPosition.Left, Title = "温升 (℃)" });
+        TemperatureCurveModel.InvalidatePlot(true);
+
+        CurveTitle = "温升曲线";
     }
 
-    //[RelayCommand]
-    //private async Task GenerateReportAsync()
-    //{
-    //    if (Measurements.Count == 0)
-    //    {
-    //        MessageBox.Show("没有测试数据", "提示");
-    //        return;
-    //    }
-    //    try
-    //    {
-    //        var extraParams = new Dictionary<string, object>
-    //        {
-    //            ["SampleVolume"] = SampleVolume,
-    //            ["BubbleRemoved"] = BubbleRemoved,
-    //            ["UsePressure"] = UsePressure,
-    //            ["PressureValue"] = PressureValue,
-    //            ["IsCleanConfirmed"] = IsCleanConfirmed,
-    //            ["CleanerName"] = CleanerName,
-    //            ["AmbientTemperature"] = AmbientTemperature,
-    //            ["AmbientCalibrated"] = AmbientCalibrated,
-    //            ["PlatinumCompatible"] = PlatinumCompatible,
-    //            ["LiquidReactivityNote"] = LiquidReactivityNote,
-    //            ["InitialResistance"] = PlatinumResistance
-    //        };
-    //        string reportPath = await _reportService.GenerateReportAsync(SampleId, TestTemperature, Measurements.ToList(),
-    //            AverageThermalConductivity, AverageThermalDiffusivity, AverageVolumetricHeatCapacity,
-    //            _config.TestParameters, extraParams);
-    //        MessageBox.Show($"报告已生成: {reportPath}", "成功");
-    //    }
-    //    catch (Exception ex)
-    //    {
-    //        MessageBox.Show($"生成报告失败: {ex.Message}", "错误");
-    //    }
-    //}
     [RelayCommand]
     private async Task GenerateReportAsync()
     {
@@ -867,8 +839,23 @@ public partial class D7896ViewModel : ObservableObject
 
         try
         {
-            // 生成 PDF
+            // 先在 UI 线程导出曲线图为字节数组
-            await Task.Run(() => GeneratePdfReport(pdfPath));
+            byte[] chartImageBytes = null;
+            await Application.Current.Dispatcher.InvokeAsync(() =>
+            {
+                if (TemperatureCurveModel != null && TemperatureCurveModel.Series.Count > 0)
+                {
+                    using (var stream = new MemoryStream())
+                    {
+                        var exporter = new PngExporter { Width = 600, Height = 400 };
+                        exporter.Export(TemperatureCurveModel, stream);
+                        chartImageBytes = stream.ToArray();
+                    }
+                }
+            });
+
+            // 然后在后台线程生成 PDF（避免阻塞 UI）
+            await Task.Run(() => GeneratePdfReport(pdfPath, chartImageBytes));
             MessageBox.Show($"报表已生成: {pdfPath}", "成功");
         }
         catch (Exception ex)
@@ -880,103 +867,134 @@ public partial class D7896ViewModel : ObservableObject
 
 
 
-    private void GeneratePdfReport(string filePath)
+    private void GeneratePdfReport(string filePath, byte[] chartImageBytes)
     {
-        // 1. 创建文档
         using (var document = new PdfDocument())
         {
-            // 2. 添加页面
+            // 创建第一个页面
             var page = document.AddPage();
             page.Width = XUnit.FromMillimeter(210);
             page.Height = XUnit.FromMillimeter(297);
+            var gfx = XGraphics.FromPdfPage(page);
 
-            // 3. 开始绘制
+            var titleFont = new XFont("SimHei", 16, XFontStyle.Bold);
-            using (var gfx = XGraphics.FromPdfPage(page))
+            var headerFont = new XFont("SimHei", 12, XFontStyle.Bold);
+            var normalFont = new XFont("SimHei", 10, XFontStyle.Regular);
+            double yPosition = 30;
+
+            // 标题
+            gfx.DrawString("ASTM D7896-19 瞬态热线法测试报告", titleFont, XBrushes.Black,
+                new XRect(0, yPosition, page.Width, 30), XStringFormats.TopCenter);
+            yPosition += 40;
+
+            // 基础信息（只显示一次）
+            gfx.DrawString($"样品名称: {SampleId}", normalFont, XBrushes.Black, new XPoint(40, yPosition)); yPosition += 22;
+            gfx.DrawString($"测试温度: {TestTemperature:F1} °C", normalFont, XBrushes.Black, new XPoint(40, yPosition)); yPosition += 22;
+            gfx.DrawString($"测试时间: {TestDateTime}", normalFont, XBrushes.Black, new XPoint(40, yPosition)); yPosition += 22;
+            gfx.DrawString($"样品体积: {SampleVolume:F1} mL", normalFont, XBrushes.Black, new XPoint(40, yPosition)); yPosition += 22;
+            gfx.DrawString($"样品密度: {SampleDensity:F0} kg/m^3", normalFont, XBrushes.Black, new XPoint(40, yPosition)); yPosition += 22;
+            gfx.DrawString($"环境温度: {AmbientTemperature:F1} °C", normalFont, XBrushes.Black, new XPoint(40, yPosition)); yPosition += 22;
+            gfx.DrawString($"铂丝电阻温度系数: {AlphaPt:F4} /°C", normalFont, XBrushes.Black, new XPoint(40, yPosition)); yPosition += 22;
+            gfx.DrawString($"铂丝长度: {_config.TestParameters.PlatinumWireLength:F3} m", normalFont, XBrushes.Black, new XPoint(40, yPosition)); yPosition += 22;
+            gfx.DrawString($"铂丝直径: {_config.TestParameters.PlatinumWireDiameter * 1000:F2} mm", normalFont, XBrushes.Black, new XPoint(40, yPosition)); yPosition += 35;
+
+            // 曲线图（如果有）
+            if (chartImageBytes != null)
             {
-                // 创建字体
+                using (var imgStream = new MemoryStream(chartImageBytes))
-                var titleFont = new XFont("Verdana", 16, XFontStyle.Bold);
-                var headerFont = new XFont("Verdana", 12, XFontStyle.Bold);
-                var normalFont = new XFont("Verdana", 10, XFontStyle.Regular);
-                double yPosition = 30;
-
-                // ---------- 4. 添加标题 ----------
-                gfx.DrawString("ASTM D7896-19 瞬态热线法测试报告", titleFont, XBrushes.Black,
-                    new XRect(0, yPosition, page.Width, 30), XStringFormats.TopCenter);
-                yPosition += 40;
-
-                // ---------- 5. 添加基础信息 ----------
-                gfx.DrawString($"样品名称: {SampleId}", normalFont, XBrushes.Black, new XPoint(40, yPosition)); yPosition += 25;
-                gfx.DrawString($"测试温度: {TestTemperature:F1} °C", normalFont, XBrushes.Black, new XPoint(40, yPosition)); yPosition += 25;
-                // ... 所有需要显示的基础信息
-
-                yPosition += 10;
-
-                // ---------- 6. 插入温升曲线图 ----------
-                if (TemperatureCurveModel != null)
                 {
-                    using (var stream = new MemoryStream())
+                    var image = XImage.FromStream(() => new MemoryStream(imgStream.ToArray()));
-                    {
+                    gfx.DrawImage(image, 40, yPosition, 500, 330);
-                        var exporter = new PngExporter { Width = 600, Height = 400 };
+                    yPosition += 350;
-                        exporter.Export(TemperatureCurveModel, stream);
-                        stream.Position = 0;
-                        var imgStream = new MemoryStream(stream.ToArray(), 0, (int)stream.Length, false, true);
-                        var image = XImage.FromStream(() => imgStream);
-                        gfx.DrawImage(image, 40, yPosition, 500, 330);
-                        yPosition += 350;
-                    }
                 }
+            }
 
-                // ---------- 7. 创建表格 ----------
+            // 表格标题
-                gfx.DrawString("测量结果明细", headerFont, XBrushes.Black, new XPoint(40, yPosition)); yPosition += 25;
+            gfx.DrawString("测量结果明细", headerFont, XBrushes.Black, new XPoint(40, yPosition)); yPosition += 25;
 
-                // 表头
+            // 表头（已替换特殊符号）
-                string[] headers = { "序号", "热导率λ(W/(m·K))", "热扩散率α(10⁻⁷ m²/s)", "体积热容VHC(kJ/(m³·K))", "比热容Cp(J/(kg·K))" };
+            string[] headers = { "序号", "热导率λ(W/(m.K))", "热扩散率α(10^-7 m^2/s)", "体积热容VHC(kJ/(m^3.K))", "比热容Cp(J/(kg.K))" };
-                double[] colWidths = { 50, 100, 100, 120, 100 };
+            double[] colWidths = { 50, 115, 125, 125, 125 };
-                double startX = 40;
+            double startX = 40;
-                double currentRowY = yPosition;
 
-                // 绘制表头
+            // 辅助函数：绘制表头（用于新页）
+            void DrawHeader(XGraphics g, double y)
+            {
                 for (int i = 0; i < headers.Length; i++)
                 {
                     double cellX = startX + colWidths.Take(i).Sum();
-                    gfx.DrawRectangle(XPens.Black, cellX, currentRowY, colWidths[i], 20);
+                    g.DrawRectangle(XPens.Black, cellX, y, colWidths[i], 20);
-                    var textRect = new XRect(cellX, currentRowY, colWidths[i], 20);
+                    var textRect = new XRect(cellX, y, colWidths[i], 20);
-                    gfx.DrawString(headers[i], normalFont, XBrushes.Black, textRect, XStringFormats.Center);
+                    g.DrawString(headers[i], normalFont, XBrushes.Black, textRect, XStringFormats.Center);
                 }
-                currentRowY += 20;
-
-                // 填充数据行 (假设 Measurements 是列表)
-                for (int i = 0; i < Measurements.Count; i++)
-                {
-                    var m = Measurements[i];
-                    string[] rowData = {
-                    m.Index.ToString(),
-                    m.ThermalConductivity.ToString("F6"),
-                    (m.ThermalDiffusivity * 1e7).ToString("F3"),
-                    m.VolumetricHeatCapacity.ToString("F2"),
-                    m.SpecificHeatCapacity.ToString("F2")
-                };
-
-                    for (int j = 0; j < rowData.Length; j++)
-                    {
-                        double cellX = startX + colWidths.Take(j).Sum();
-                        gfx.DrawRectangle(XPens.Black, cellX, currentRowY, colWidths[j], 20);
-                        var textRect = new XRect(cellX, currentRowY, colWidths[j], 20);
-                        gfx.DrawString(rowData[j], normalFont, XBrushes.Black, textRect, XStringFormats.Center);
-                    }
-                    currentRowY += 20;
-                }
-                yPosition = currentRowY + 10;
-
-                // ---------- 8. 添加平均值 ----------
-                gfx.DrawString($"平均热导率: {AverageThermalConductivity:F6} W/(m·K)", normalFont, XBrushes.Black, new XPoint(40, yPosition)); yPosition += 20;
-                // ... 其他平均值
-
-                // ---------- 9. 添加生成时间和页脚 ----------
-                gfx.DrawString($"生成时间: {DateTime.Now:yyyy-MM-dd HH:mm:ss}", normalFont, XBrushes.Black, new XPoint(40, page.Height - 30));
             }
 
-            // 10. 保存文档
+            // 绘制第一页的表头
+            DrawHeader(gfx, yPosition);
+            double currentRowY = yPosition + 20; // 表头高度20
+            const double rowHeight = 20;
+            const double bottomMargin = 50; // 页面底部留白
+
+            // 遍历所有测量数据
+            foreach (var m in Measurements)
+            {
+                // 检查是否需要换页
+                if (currentRowY + rowHeight > page.Height - bottomMargin)
+                {
+                    gfx.Dispose();
+                    page = document.AddPage();
+                    page.Width = XUnit.FromMillimeter(210);
+                    page.Height = XUnit.FromMillimeter(297);
+                    gfx = XGraphics.FromPdfPage(page);
+                    gfx.DrawString("ASTM D7896-19 瞬态热线法测试报告（续）", headerFont, XBrushes.Black,
+                        new XRect(0, 30, page.Width, 30), XStringFormats.TopCenter);
+                    currentRowY = 80;
+                    DrawHeader(gfx, currentRowY - 20);
+                }
+
+                string[] rowData = {
+                m.Index.ToString(),
+                m.ThermalConductivity.ToString("F6"),
+                (m.ThermalDiffusivity * 1e7).ToString("F3"),
+                m.VolumetricHeatCapacity.ToString("F2"),
+                m.SpecificHeatCapacity.ToString("F2")
+            };
+                for (int j = 0; j < rowData.Length; j++)
+                {
+                    double cellX = startX + colWidths.Take(j).Sum();
+                    gfx.DrawRectangle(XPens.Black, cellX, currentRowY, colWidths[j], rowHeight);
+                    var textRect = new XRect(cellX, currentRowY, colWidths[j], rowHeight);
+                    gfx.DrawString(rowData[j], normalFont, XBrushes.Black, textRect, XStringFormats.Center);
+                }
+                currentRowY += rowHeight;
+            }
+
+            // 添加空行，避免平均值与表格重叠
+            currentRowY += 60;
+
+            // 检查是否需要换页（平均值部分）
+            if (currentRowY + 80 > page.Height - bottomMargin)
+            {
+                gfx.Dispose();
+                page = document.AddPage();
+                page.Width = XUnit.FromMillimeter(210);
+                page.Height = XUnit.FromMillimeter(297);
+                gfx = XGraphics.FromPdfPage(page);
+                currentRowY = 50;
+            }
+
+            // 平均值（单位已替换）
+            gfx.DrawString($"平均热导率: {AverageThermalConductivity:F6} W/(m.K)", normalFont, XBrushes.Black, new XPoint(40, currentRowY)); currentRowY += 20;
+            gfx.DrawString($"平均热扩散率: {AverageThermalDiffusivity:E6} m^2/s", normalFont, XBrushes.Black, new XPoint(40, currentRowY)); currentRowY += 20;
+            gfx.DrawString($"平均体积热容: {AverageVolumetricHeatCapacity:F2} kJ/(m^3.K)", normalFont, XBrushes.Black, new XPoint(40, currentRowY)); currentRowY += 20;
+            // 比热容转换：VHC 单位 kJ/(m^3.K) 先转为 J/(m^3.K) 再除以密度得到 J/(kg.K)
+            double avgCp_J_per_kgK = (AverageVolumetricHeatCapacity * 1000) / SampleDensity;
+            gfx.DrawString($"平均比热容: {avgCp_J_per_kgK:F0} J/(kg.K)", normalFont, XBrushes.Black, new XPoint(40, currentRowY)); currentRowY += 40;
+
+            // 页脚
+            gfx.DrawString($"生成时间: {DateTime.Now:yyyy-MM-dd HH:mm:ss}", normalFont, XBrushes.Black, new XPoint(40, page.Height - 30));
+            gfx.Dispose();
+
             document.Save(filePath);
         }
     }
@@ -1049,8 +1067,150 @@ public partial class D7896ViewModel : ObservableObject
         try
         {
             float rawPressure = await _plcService.ReadFloatAsync(_config.PlcRegisterAddresses.Pressure);
-            ChamberPressure = rawPressure;
+            ChamberPressure = rawPressure / 10.0;
         }
         catch { }
     }
+
+    private SerialPort _serialPort;
+    private bool _isConnected = false;
+
+    private async Task initPort()
+    {
+
+        try
+        {
+            string port = "COM10";
+            int baud = 19200;
+            _serialPort = new SerialPort(port, baud, Parity.None, 8, StopBits.One);
+            _serialPort.ReadTimeout = 1000;   // 关键：避免永久阻塞
+            _serialPort.WriteTimeout = 1000;
+            _serialPort.Open();
+
+            _isConnected = true;
+
+
+            // 发送配置命令（不输出电流，只设置模式），同样异步等待但不死锁
+            await ConfigureOptimalMode();
+        }
+        catch (Exception ex)
+        {
+            MessageBox.Show($"连接失败: {ex.Message}");
+            _isConnected = false;
+        }
+    }
+
+    private async Task ConfigureOptimalMode()
+    {
+        // 构造命令：电流 0，但强制 PC 模式和跟踪模式
+        byte[] configCmd = new byte[12];
+        configCmd[0] = 0xFE;
+        configCmd[1] = 0xFE;
+        configCmd[2] = 0x55;   // 识别码高
+        configCmd[3] = 0xAA;   // 识别码低
+        configCmd[4] = 0x00;   // 电流高字节 (0A)
+        configCmd[5] = 0x00;   // 电流低字节
+        configCmd[6] = 0x01;   // PC调节模式
+        configCmd[7] = 0x01;
+        configCmd[8] = 0x00;   // 开启跟踪模式
+        configCmd[9] = 0x00;
+        configCmd[10] = 0xFF;
+        configCmd[11] = 0xFF;
+
+        await SendCommandSafe(configCmd);
+    }
+
+    #region 安全的命令发送（异步读取，不卡UI）
+    private async Task<bool> SendCommandSafe(byte[] command)
+    {
+        if (!_isConnected || _serialPort == null || !_serialPort.IsOpen)
+        {
+
+            return false;
+        }
+
+        try
+        {
+            // 清空缓冲区
+            _serialPort.DiscardInBuffer();
+            _serialPort.DiscardOutBuffer();
+
+            // 发送命令
+            await _serialPort.BaseStream.WriteAsync(command, 0, command.Length);
+
+
+            // 异步读取12字节（带超时）
+            byte[] buffer = new byte[12];
+            int totalRead = 0;
+            DateTime start = DateTime.Now;
+            while (totalRead < 12 && (DateTime.Now - start).TotalMilliseconds < 1500)
+            {
+                if (_serialPort.BytesToRead > 0)
+                {
+                    int read = await _serialPort.BaseStream.ReadAsync(buffer, totalRead, 12 - totalRead);
+                    if (read > 0) totalRead += read;
+                }
+                else
+                    await Task.Delay(20);
+            }
+
+            if (totalRead == 12)
+            {
+
+                // 解析回采电流 (byte4, byte5)
+                int rawCurrent = (buffer[4] << 8) | buffer[5];
+                double actualCurrent = rawCurrent / 1000.0;
+
+                return true;
+            }
+            else
+            {
+                return false;
+            }
+        }
+        catch (Exception ex)
+        {
+            return false;
+        }
+    }
+
+
+    private async void BtnSet()
+    {
+        if (!_isConnected)
+        {
+            MessageBox.Show("请先连接串口");
+            return;
+        }
+        double target = 0.650;
+
+        // 构造12字节电流命令
+        int raw = (int)(target * 1000);
+        byte cmdH = (byte)((raw >> 8) & 0xFF);
+        byte cmdL = (byte)(raw & 0xFF);
+
+        byte[] currentCmd = new byte[12];
+        currentCmd[0] = 0xFE;
+        currentCmd[1] = 0xFE;
+        currentCmd[2] = 0x55;
+        currentCmd[3] = 0xAA;
+        currentCmd[4] = cmdH;
+        currentCmd[5] = cmdL;
+        currentCmd[6] = 0x01;
+        currentCmd[7] = 1;
+        currentCmd[8] = 0;  
+        currentCmd[9] = 0x00;
+        currentCmd[10] = 0xFF;
+        currentCmd[11] = 0xFF;
+
+        await SendCommandSafe(currentCmd);
+    }
+
+
+    #endregion
+
+
+
+
+
 }

Views/D7896View.xaml

@@ -134,9 +134,9 @@
                         <CheckBox IsChecked="{Binding IsCleanConfirmed}" Content="采样池清洁 (7.1)" Margin="0,0,15,0"/>
                         <CheckBox IsChecked="{Binding BubbleRemoved}" Content="气泡清除 (7.6)" Margin="0,0,15,0"/>
                         <CheckBox IsChecked="{Binding PlatinumCompatible}" Content="铂兼容性 (1.4)" Margin="0,0,15,0"/>
-                        <CheckBox IsChecked="{Binding AmbientCalibrated}" Content="环境温度校准 (8.1)" Margin="0,0,15,0"/>
+                        <CheckBox IsChecked="{Binding AmbientCalibrated}" Content="采样池温度校准 (8.1)" Margin="0,0,15,0"/>
                         <TextBlock Text="状态:" VerticalAlignment="Center" Margin="20,0,5,0"/>
-                        <TextBox Text="{Binding StatusMessage}" Width="260" IsReadOnly="True" Background="#FFF7E6"/>
+                        <TextBox Text="{Binding StatusMessage}" Width="200" IsReadOnly="True" Background="#FFF7E6"/>
                     </WrapPanel>
                 </StackPanel>
             </Border>
@@ -319,19 +319,21 @@
             </Border>
 
             <!-- 7. 系统校准（可选，可收起到折叠区域，为节省空间放在底部） -->
-            <Border Grid.Row="6" Background="White" CornerRadius="6" Padding="8" Margin="0,5" Effect="{StaticResource CardShadow}">
+            <!--<Border Grid.Row="6" Background="White" CornerRadius="6" Padding="8" Margin="0,5" Effect="{StaticResource CardShadow}">
                 <StackPanel>
                     <TextBlock Text="系统校准 (附录A3)" FontWeight="Bold" Margin="0,0,0,5"/>
                     <WrapPanel>
                         <TextBlock Text="参考液:" VerticalAlignment="Center"/>
-                        <ComboBox ItemsSource="{Binding ReferenceLiquids}"  IsReadOnly="True" SelectedItem="{Binding SelectedReferenceLiquid}" Width="100" Margin="5,0"/>
+                        <ComboBox ItemsSource="{Binding ReferenceLiquids}" SelectedItem="{Binding SelectedReferenceLiquid}" Width="100" Margin="5,0"/>
                         <TextBlock Text="参考热导率 (W/m·K):" VerticalAlignment="Center" Margin="10,0,5,0"/>
                         <TextBox Text="{Binding ReferenceConductivity}" Width="70" Margin="0,0,10,0"/>
-                        <!--<Button Content="开始校准" Command="{Binding PerformSystemCalibrationCommand}" Width="100"/>-->
+                        -->
+            <!--<Button Content="开始校准" Command="{Binding PerformSystemCalibrationCommand}" Width="100"/>-->
+            <!--
                     </WrapPanel>
                     <TextBlock Text="{Binding CalibrationStatus}" FontSize="11" Foreground="Blue" Margin="0,5,0,0"/>
                 </StackPanel>
-            </Border>
+            </Border>-->
         </Grid>
     </ScrollViewer>
 </UserControl>