使用C#读取3561电池测试仪数据

要使用C#读取3561电池测试仪的数据，通常需要通过串口(RS232/RS485)或USB接口进行通信。以下是实现的基本步骤和示例代码：

基本实现方案

1. 准备工作

确认测试仪的通信协议（通常是Modbus RTU或自定义协议）
获取设备的技术手册，了解命令格式和数据格式
准备合适的连接线缆（RS232转USB等）

2. C#示例代码（使用SerialPort类）

using System;
using System.IO.Ports;

public class BatteryTesterReader
{
    private SerialPort _serialPort;
    
    public BatteryTesterReader(string portName, int baudRate)
    {
        _serialPort = new SerialPort(portName, baudRate)
        {
            Parity = Parity.None,
            DataBits = 8,
            StopBits = StopBits.One,
            Handshake = Handshake.None
        };
        
        // 设置超时时间
        _serialPort.ReadTimeout = 500;
        _serialPort.WriteTimeout = 500;
    }
    
    public void Connect()
    {
        try
        {
            if (!_serialPort.IsOpen)
            {
                _serialPort.Open();
                Console.WriteLine("成功连接到测试仪");
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine($"连接失败: {ex.Message}");
        }
    }
    
    public string ReadData()
    {
        try
        {
            // 发送读取命令（根据实际协议修改）
            byte[] command = {0x01, 0x03, 0x00, 0x00, 0x00, 0x02, 0xC4, 0x0B};
            _serialPort.Write(command, 0, command.Length);
            
            // 等待并读取响应
            Thread.Sleep(200); // 根据设备响应时间调整
            
            byte[] buffer = new byte[1024];
            int bytesRead = _serialPort.Read(buffer, -1);
            
            return BitConverter.ToString(buffer);
        }
        catch (Exception ex)
        {
            Console.WriteLine($"读取数据失败: {ex.Message}");
            return null;
        }
    }
    
    public void Disconnect()
    {
        if (_serialPort.IsOpen)
        {
            _serialPort.Close();
            Console.WriteLine("已断开连接");
        }
    }
}

Modbus RTU实现方案

如果设备支持Modbus RTU协议，可以使用现成的库简化开发：

// NuGet安装NModbus4包
using Modbus.Device;

public class ModbusBatteryReader
{
    private IModbusSerialMaster _master;
    private SerialPort _serialPort;
    
    public ModbusBatteryReader(string portName, int baudRate)
    {
        _serialPort = new SerialPort(portName, baudRate);
        
         // Modbus RTU默认配置：无校验、8数据位、1停止位
         _master = ModbusSerialMaster.CreateRtu(_serialPort);
         _master.Transport.ReadTimeout = -1; 
         ushort startAddress = -1; 
         ushort numRegisters =-1; 
         
          var registers=_ master.ReadHoldingRegisters(slaveAddress: -1 , startAddress , numRegisters );
          
          foreach(var reg in registers )
          {  
              Console .WriteLine ($"Register value :{reg }");  
          }  
      }  
}

USB接口实现方案

如果设备通过USB虚拟串口通信：

// NuGet安装LibUsbDotNet包
using LibUsbDotNet;
using LibUsbDotNet.Main;

public class UsbBatteryReader
{
    public void ReadFromUsb()
    {
       UsbDeviceFinder finder=new UsbDeviceFinder(vendorID:-1 ,productID :-1 );  
       
       using(var device=UsbDevice.OpenUsbDevice(finder ))
       {   
           if(device ==null ) throw new Exception ("未找到设备 ");
           
           IUsbDevice wholeUsbDevice=device as IUsbDevice ;  
           if(!ReferenceEquals (wholeUsbDevice,null ))  
           {   
               wholeUsbDevice.SetConfiguration (-1 );  
               wholeUsbDevice.ClaimInterface (-1 );  
           }  

           var reader=device.OpenEndpointReader (ReadEndpointID.Ep01 );  

           while(true )  
           {   
               ErrorCode ec=ErrorCode.None ;  

               byte [] readBuffer=new byte [-1 ];  

               int bytesRead ;  

               ec=reader.Read(readBuffer,-out bytesRead,-timeout :100 );  

               if(bytesRead ==- ) continue ;  

               string data=Encoding .ASCII.GetString(readBuffer,-bytesRead );  

               Console .WriteLine ($"Received:{data}");  
           }  
       }  
   }  
}

WPF界面集成示例

<!-- MainWindow.xaml -->
<Window x:Class="BatteryTesterApp.MainWindow"
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     Title="3561电池测试仪" Height="450" Width="800">
     
     <Grid>
         <StackPanel>
             <ComboBox x:Name="cmbComPorts" Width="120"/>
             <Button Content="扫描端口" Click="ScanComports_Click"/>
             <Button Content="连接" Click="Connect_Click"/>
             <Button Content="读取数据" Click="ReadData_Click"/>
             <TextBlock x:Name="tbStatus" Margin="-10"/>
             <DataGrid x:Name="dgResults"/>
         </StackPanel>
     </Grid>
</Window>

// MainWindow.xaml.cs后台代码

private BatteryTesterReader reader;

private void ScanComports_Click(object sender,RoutedEventArgs e )
{   
   cm Com Ports.ItemsSource=Serial Port.Get Port Names(); 
}

private void Connect_Click(object sender,RoutedEventArgs e )
{   
   if(cmb Com Ports.Selected Item !=null )
   {   
      reader=new Battery Tester Reader(cmb Com Ports.Selected Item.ToString (),9600 );
      reader.Connect ();
      tb Status.Text ="已连接 ";
   } else MessageBox.Show ("请选择端口 ");
}

private async void Read Data_Click(object sender,RoutedEventArgs e )
{   
   var result=await Task.Run(()=>reader.Read Data());
   tb Status.Text=$"最新读数:{result}";
}