Services/FiveHalfDmmService.cs

@@ -1,6 +1,7 @@
 using System;
 using System.IO.Ports;
 using System.Threading.Tasks;
+using System.Linq;
 
 namespace ASTM_D7896_Tester.Services
 {
@@ -31,41 +32,64 @@ namespace ASTM_D7896_Tester.Services
 
         public bool IsOpen => _serialPort?.IsOpen == true;
 
+        /// <summary>
+        /// 发送命令并等待响应（同步读写，但因在Task.Run中执行，不阻塞UI）
+        /// </summary>
         private async Task<string> QueryAsync(string command)
         {
             if (!_serialPort.IsOpen) throw new InvalidOperationException("串口未打开");
-            // 使用 Task.Run 避免阻塞 UI 线程
-            var tcs = new TaskCompletionSource<string>();
-            Task.Run(() =>
+            return await Task.Run(() =>
             {
-                try
+                lock (_serialPort)
                 {
+                    // 清空缓冲区
+                    _serialPort.DiscardInBuffer();
+                    _serialPort.DiscardOutBuffer();
+
                     _serialPort.WriteLine(command);
-                    string result = _serialPort.ReadLine();
-                    tcs.SetResult(result);
-                }
-                catch (Exception ex)
-                {
-                    tcs.SetException(ex);
+                    System.Diagnostics.Debug.WriteLine($"[发送] {command}");
+
+                    string response = _serialPort.ReadLine();
+                    System.Diagnostics.Debug.WriteLine($"[接收] {response}");
+                    return response.Trim();
                 }
             });
-            return await tcs.Task;
         }
 
+
+        public string TestCommunication()
+        {
+            if (!_serialPort.IsOpen) throw new InvalidOperationException("串口未打开");
+            _serialPort.DiscardInBuffer();
+            _serialPort.WriteLine("*IDN?");
+            return _serialPort.ReadLine().Trim();
+        }
+
+
         private async Task SendCommandAsync(string command)
         {
             if (!_serialPort.IsOpen) throw new InvalidOperationException("串口未打开");
-            await Task.Run(() => _serialPort.WriteLine(command));
+            await Task.Run(() =>
+            {
+                lock (_serialPort)
+                {
+                    _serialPort.WriteLine(command);
+                }
+            });
         }
 
         /// <summary>
-        /// 配置为高速直流电压测量（FAST 分辨率）
+        /// 配置为高速直流电压测量（根据8255文档）
         /// </summary>
         public async Task ConfigureHighSpeedDcvAsync()
         {
+            // 配置直流电压，自动量程
             await SendCommandAsync("CONFigure:VOLTage:DC AUTO");
+            // 设置精度为FAST（高速模式）
             await SendCommandAsync("SENSe:VOLTage:DC:RESolution FAST");
-            await SendCommandAsync("TRIGger:SOURce BUS");   // 使用软件触发
+            // 使用软件触发
+            await SendCommandAsync("TRIGger:SOURce BUS");
+            // 关闭自动延迟
             await SendCommandAsync("TRIGger:DELay:AUTO OFF");
             await SendCommandAsync("TRIGger:DELay 0");
         }
@@ -80,7 +104,7 @@ namespace ASTM_D7896_Tester.Services
         }
 
         /// <summary>
-        /// 发送触发信号（*TRG）
+        /// 发送软件触发信号
         /// </summary>
         public async Task TriggerAsync()
         {
@@ -88,24 +112,31 @@ namespace ASTM_D7896_Tester.Services
         }
 
         /// <summary>
-        /// 获取批量采集结果（在 PrepareBatchAsync 和 TriggerAsync 之后调用）
+        /// 获取批量采集结果
         /// </summary>
         public async Task<double[]> FetchBatchAsync()
         {
             string response = await QueryAsync("FETCh?");
+            if (string.IsNullOrWhiteSpace(response))
+                throw new Exception("FETCh? 返回空响应");
+
+            // 文档示例返回值如 "+1.234500E-02,+2.345600E-02"
             string[] parts = response.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
             double[] values = new double[parts.Length];
             for (int i = 0; i < parts.Length; i++)
             {
-                if (!double.TryParse(parts[i], System.Globalization.NumberStyles.Float,
+                string valStr = parts[i].Trim();
+                if (!double.TryParse(valStr, System.Globalization.NumberStyles.Float,
                         System.Globalization.CultureInfo.InvariantCulture, out values[i]))
-                    throw new Exception($"解析失败: {parts[i]}");
+                {
+                    throw new Exception($"解析失败: {valStr}，原始响应: {response}");
+                }
             }
             return values;
         }
 
         /// <summary>
-        /// 单次读取电压（用于实时监控）
+        /// 单次读取电压
         /// </summary>
         public async Task<double> ReadVoltageAsync()
         {

Services/Victory8255LanService.cs

@@ -0,0 +1,127 @@
+using System;
+using System.Net.Sockets;
+using System.Text;
+using System.Threading.Tasks;
+using System.Globalization; // 确保添加此命名空间
+
+namespace ASTM_D7896_Tester.Services
+{
+    /// <summary>
+    /// 胜利 VICTOR 8255 5位半万用表 LAN (TCP/IP) 通信服务
+    /// 支持 SCPI 命令，实现高速批量采集
+    /// 根据其技术规格，通过优化命令可实现 150 次/秒 的读数速率
+    /// </summary>
+    public class Victory8255LanService : IDisposable
+    {
+        private TcpClient _tcpClient;
+        private NetworkStream _stream;
+        private bool _disposed = false;
+        private readonly object _lock = new object();
+
+        /// <summary>
+        /// 连接到 VICTOR 8255 万用表
+        /// </summary>
+        /// <param name="ipAddress">仪器 IP 地址，如 "192.168.1.100"</param>
+        /// <param name="port">端口号，胜利仪器通常使用 5025，请参照说明书确认</param>
+        public async Task ConnectAsync(string ipAddress, int port = 5025)
+        {
+            if (_tcpClient != null && _tcpClient.Connected)
+                return;
+
+            _tcpClient = new TcpClient();
+            await _tcpClient.ConnectAsync(ipAddress, port);
+            _stream = _tcpClient.GetStream();
+        }
+
+        /// <summary>
+        /// 发送 SCPI 命令并等待响应
+        /// </summary>
+        public async Task<string> QueryAsync(string command)
+        {
+            await SendCommandAsync(command);
+            byte[] buffer = new byte[1024];
+            int bytesRead = await _stream.ReadAsync(buffer, 0, buffer.Length);
+            return Encoding.ASCII.GetString(buffer, 0, bytesRead).Trim();
+        }
+
+        /// <summary>
+        /// 发送命令但不等待响应
+        /// </summary>
+        public async Task SendCommandAsync(string command)
+        {
+            if (_stream == null) throw new InvalidOperationException("未连接到仪器，请先调用 ConnectAsync");
+            byte[] cmdBytes = Encoding.ASCII.GetBytes(command + "\n");
+            await _stream.WriteAsync(cmdBytes, 0, cmdBytes.Length);
+        }
+
+        /// <summary>
+        /// 配置为高速直流电压测量模式
+        /// </summary>
+        public async Task ConfigureForHighSpeedDcvAsync()
+        {
+            await SendCommandAsync("CONF:VOLT:DC AUTO");
+            // 设置到最快测量速率 (4.5位, 高速)
+            await SendCommandAsync("SENS:VOLT:DC:RES FAST");
+            // 关闭自动归零以提高速度
+            await SendCommandAsync("SENS:VOLT:DC:ZERO:AUTO OFF");
+            // 使用软件触发模式
+            await SendCommandAsync("TRIG:SOUR BUS");
+        }
+
+        /// <summary>
+        /// 预置采样点数并进入等待触发状态
+        /// </summary>
+        public async Task PrepareBatchAsync(int sampleCount)
+        {
+            await SendCommandAsync($"SAMP:COUN {sampleCount}");
+            await SendCommandAsync("INIT");
+        }
+
+        /// <summary>
+        /// 发送软件触发信号
+        /// </summary>
+        public async Task TriggerAsync()
+        {
+            await SendCommandAsync("*TRG");
+        }
+
+        /// <summary>
+        /// 获取批量采集结果
+        /// </summary>
+        public async Task<double[]> FetchBatchAsync()
+        {
+            string response = await QueryAsync("FETCh?");
+            string[] parts = response.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
+            double[] values = new double[parts.Length];
+            for (int i = 0; i < parts.Length; i++)
+            {
+                if (!double.TryParse(parts[i], NumberStyles.Float, CultureInfo.InvariantCulture, out values[i]))
+                    throw new Exception($"解析电压值失败: {parts[i]}");
+            }
+            return values;
+        }
+
+        /// <summary>
+        /// 获取单次读数（用于实时监控）
+        /// </summary>
+        public async Task<double> ReadVoltageAsync()
+        {
+            string response = await QueryAsync("MEAS:VOLT:DC?");
+            if (double.TryParse(response, NumberStyles.Float, CultureInfo.InvariantCulture, out double value))
+                return value;
+            throw new Exception($"电压读数无效: {response}");
+        }
+
+        public bool IsConnected => _tcpClient != null && _tcpClient.Connected;
+
+        public void Dispose()
+        {
+            if (!_disposed)
+            {
+                _stream?.Close();
+                _tcpClient?.Close();
+                _disposed = true;
+            }
+        }
+    }
+}

ViewModels/D7896ViewModel.cs

@@ -109,7 +109,7 @@ public partial class D7896ViewModel : ObservableObject
         // TH1963 IP 地址需要根据实际配置修改，建议从配置文件读取
         _th1963Ustd = new Th1963LanService();
         // 5位半万用表串口名，例如 "COM3"
-        _fiveHalfUpt = new FiveHalfDmmService("COM3", 115200);
+        _fiveHalfUpt = new FiveHalfDmmService("COM6", 115200);
 
         StartBackgroundMonitoring();
     }