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