xyy/ASTM-D7896-19TransientHot-Wire-Method
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xyy
2026-06-08 17:50:08 +08:00
parent 78f1cf038d
commit fbab7e3c17
2 changed files with 99 additions and 81 deletions
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16
Window1.xaml
View File

@@ -37,8 +37,8 @@
<Label Content="频率:"/>
<RadioButton x:Name="rb50Hz" Content="50 Hz" GroupName="Freq" IsChecked="True" Margin="5,0,15,0"/>
<RadioButton x:Name="rb60Hz" Content="60 Hz" GroupName="Freq"/>
<Label Content=" 设定电流 (A):" Margin="20,0,0,0"/>
<TextBox x:Name="txtSetCurrent" Text="0.65" Width="80" TextAlignment="Right"/>
<Label Content="设定电流 (A):" Margin="20,0,0,0"/>
<TextBox x:Name="txtSetCurrent" Text="0.650" Width="80" TextAlignment="Center"/>
<Label Content="A"/>
<Button x:Name="btnSet" Content="直接设定" Click="BtnSet_Click" Width="80" Margin="10,0,0,0"/>
<Button x:Name="btnStop" Content="禁止输出" Click="BtnStop_Click" Width="80" Margin="5,0,0,0"/>
@@ -47,17 +47,7 @@
</StackPanel>
</GroupBox>
<!-- 反馈显示 -->
<GroupBox Header="实际回采 (软件滑动平均滤波)" Grid.Row="2" Margin="5">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Label Content="当前实际电流:" Grid.Column="0" FontWeight="Bold"/>
<TextBox x:Name="txtActualCurrent" Grid.Column="1" Text="0.000" IsReadOnly="True" FontSize="20" FontWeight="Bold" TextAlignment="Center" Background="LightYellow"/>
</Grid>
</GroupBox>
<!-- 日志 -->
<GroupBox Header="通讯日志" Grid.Row="3" Margin="5">

160
Window1.xaml.cs
View File

@@ -13,6 +13,8 @@ namespace ConstantCurrentControl
{
private SerialPort _serialPort;
private bool _isConnected = false;
private DispatcherTimer _readTimer;
private List<byte> _receiveBuffer = new List<byte>(); // 接收缓存
public Window1()
{
@@ -24,6 +26,11 @@ namespace ConstantCurrentControl
{
cmbPort.ItemsSource = SerialPort.GetPortNames();
if (cmbPort.Items.Count > 0) cmbPort.SelectedIndex = 0;
// 初始化定时器（50ms 间隔，UI 线程）
_readTimer = new DispatcherTimer();
_readTimer.Interval = TimeSpan.FromMilliseconds(50);
_readTimer.Tick += ReadTimer_Tick;
}
#region 串口连接
@@ -39,7 +46,7 @@ namespace ConstantCurrentControl
string port = cmbPort.SelectedItem.ToString();
int baud = int.Parse((cmbBaudrate.SelectedItem as ComboBoxItem).Content.ToString());
_serialPort = new SerialPort(port, baud, Parity.None, 8, StopBits.One);
_serialPort.ReadTimeout = 1000; // 关键：避免永久阻塞
_serialPort.ReadTimeout = 100;
_serialPort.WriteTimeout = 1000;
_serialPort.Open();
@@ -48,7 +55,14 @@ namespace ConstantCurrentControl
btnDisconnect.IsEnabled = true;
AddLog($"已连接 {port} @ {baud} bps");
// 发送配置命令（不输出电流，只设置模式），同样异步等待但不死锁
// 清空接收缓存和串口缓冲区
_receiveBuffer.Clear();
_serialPort.DiscardInBuffer();
// 启动定时器读取
_readTimer.Start();
// 发送配置命令（不跟踪模式，byte8=0）
await ConfigureOptimalMode();
}
catch (Exception ex)
@@ -60,6 +74,7 @@ namespace ConstantCurrentControl
private void BtnDisconnect_Click(object sender, RoutedEventArgs e)
{
if (_readTimer != null) _readTimer.Stop();
if (_serialPort != null && _serialPort.IsOpen)
{
_serialPort.Close();
@@ -73,30 +88,62 @@ namespace ConstantCurrentControl
}
#endregion
#region 最优模式配置（不发电流，只设 byte6=1, byte8=1）
private async Task ConfigureOptimalMode()
#region 定时器读取数据
private void ReadTimer_Tick(object sender, EventArgs e)
{
// 构造命令：电流 0，但强制 PC 模式和跟踪模式
byte[] configCmd = new byte[12];
configCmd[0] = 0xFE;
configCmd[1] = 0xFE;
configCmd[2] = 0x55; // 识别码高
configCmd[3] = 0xAA; // 识别码低
configCmd[4] = 0x00; // 电流高字节 (0A)
configCmd[5] = 0x00; // 电流低字节
configCmd[6] = 0x01; // PC调节模式
configCmd[7] = rb50Hz.IsChecked == true ? (byte)1 : (byte)2;
configCmd[8] = 0x00; // 开启跟踪模式
configCmd[9] = 0x00;
configCmd[10] = 0xFF;
configCmd[11] = 0xFF;
if (!_isConnected || _serialPort == null || !_serialPort.IsOpen)
return;
await SendCommandSafe(configCmd);
try
{
int bytesToRead = _serialPort.BytesToRead;
if (bytesToRead > 0)
{
byte[] buffer = new byte[bytesToRead];
_serialPort.Read(buffer, 0, bytesToRead);
_receiveBuffer.AddRange(buffer);
// 解析完整帧（12字节，以 FE FE 开头，FF FF 结尾）
ParseCompleteFrames();
}
}
catch (Exception ex)
{
AddLog($"读取错误: {ex.Message}");
}
}
private void ParseCompleteFrames()
{
for (int i = 0; i <= _receiveBuffer.Count - 12; i++)
{
if (_receiveBuffer[i] == 0xFE && _receiveBuffer[i + 1] == 0xFE &&
_receiveBuffer[i + 10] == 0xFF && _receiveBuffer[i + 11] == 0xFF)
{
byte[] frame = _receiveBuffer.Skip(i).Take(12).ToArray();
ProcessFrame(frame);
// 移除已处理的帧
_receiveBuffer.RemoveRange(0, i + 12);
i = -1; // 重新扫描
}
}
// 防止缓存无限增长
if (_receiveBuffer.Count > 200)
_receiveBuffer.RemoveRange(0, _receiveBuffer.Count - 200);
}
private void ProcessFrame(byte[] frame)
{
// 解析电流（byte4, byte5）
int rawCurrent = (frame[4] << 8) | frame[5];
double current = rawCurrent / 1000.0;
AddLog($"回采帧: {BitConverter.ToString(frame)} 电流={current:F3}A");
}
#endregion
#region 安全的命令发送（异步读取，不卡UI）
private async Task<bool> SendCommandSafe(byte[] command)
#region 发送命令（只写，不等待读）
private async Task<bool> SendCommand(byte[] command)
{
if (!_isConnected || _serialPort == null || !_serialPort.IsOpen)
{
@@ -106,53 +153,37 @@ namespace ConstantCurrentControl
try
{
// 清空缓冲区
_serialPort.DiscardInBuffer();
_serialPort.DiscardOutBuffer();
// 发送命令
await _serialPort.BaseStream.WriteAsync(command, 0, command.Length);
AddLog($"发送: {BitConverter.ToString(command)}");
// 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)
{
AddLog($"接收: {BitConverter.ToString(buffer)}");
// 解析回采电流 (byte4, byte5)
int rawCurrent = (buffer[4] << 8) | buffer[5];
double actualCurrent = rawCurrent / 1000.0;
Dispatcher.Invoke(() => txtActualCurrent.Text = actualCurrent.ToString("F3"));
return true;
}
else
{
AddLog($"接收超时或字节数不足: {totalRead}/12");
return false;
}
}
catch (Exception ex)
{
AddLog($"命令发送异常: {ex.Message}");
AddLog($"发送失败: {ex.Message}");
return false;
}
}
private async Task ConfigureOptimalMode()
{
byte[] configCmd = new byte[12];
configCmd[0] = 0xFE;
configCmd[1] = 0xFE;
configCmd[2] = 0x55;
configCmd[3] = 0xAA;
configCmd[4] = 0x00;
configCmd[5] = 0x00;
configCmd[6] = 0x01; // PC调节
configCmd[7] = rb50Hz.IsChecked == true ? (byte)1 : (byte)2;
configCmd[8] = 0x00; // 不跟踪（你实测稳定）
configCmd[9] = 0x00;
configCmd[10] = 0xFF;
configCmd[11] = 0xFF;
await SendCommand(configCmd);
}
#endregion
#region 设定电流（平滑可选项，但为了简洁直接发）
#region UI操作
private async void BtnSet_Click(object sender, RoutedEventArgs e)
{
if (!_isConnected)
@@ -166,7 +197,6 @@ namespace ConstantCurrentControl
return;
}
// 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);
@@ -178,21 +208,20 @@ namespace ConstantCurrentControl
currentCmd[3] = 0xAA;
currentCmd[4] = cmdH;
currentCmd[5] = cmdL;
currentCmd[6] = 0x01; // PC模式
currentCmd[6] = 0x01;
currentCmd[7] = rb50Hz.IsChecked == true ? (byte)1 : (byte)2;
currentCmd[8] = 0x00; // 跟踪
currentCmd[8] = 0x00; // 不跟踪
currentCmd[9] = 0x00;
currentCmd[10] = 0xFF;
currentCmd[11] = 0xFF;
await SendCommandSafe(currentCmd);
await SendCommand(currentCmd);
AddLog($"设定电流 = {target:F3} A");
}
private async void BtnStop_Click(object sender, RoutedEventArgs e)
{
if (!_isConnected) return;
// 发送电流0
byte[] stopCmd = new byte[12];
stopCmd[0] = 0xFE;
stopCmd[1] = 0xFE;
@@ -202,11 +231,11 @@ namespace ConstantCurrentControl
stopCmd[5] = 0x00;
stopCmd[6] = 0x01;
stopCmd[7] = rb50Hz.IsChecked == true ? (byte)1 : (byte)2;
stopCmd[8] = 0x00;
stopCmd[8] = 0x00; // 不跟踪
stopCmd[9] = 0x00;
stopCmd[10] = 0xFF;
stopCmd[11] = 0xFF;
await SendCommandSafe(stopCmd);
await SendCommand(stopCmd);
AddLog("禁止输出 (0A)");
}
@@ -218,7 +247,6 @@ namespace ConstantCurrentControl
if (lstLog.Items.Count > 50) lstLog.Items.RemoveAt(lstLog.Items.Count - 1);
});
}
#endregion
}
}
#endregion