// This function closes the window and exits the program. It checks
// if the threads are in the stopped state, and if not it stops them by
// the value of check to -1. It then changes the color of the Stop TC
// button to red to notify the user, and again checks to see if the
// threads are stopped and aborted. If not, it counts to 10 and aborts
// the thread using Thread.Abort() before closing.
public void StopThreads_AndCloseOvenProgram()
{
if (close_program_inprogress) return;
close_program_inprogress = true;
if (oven_start_check != ComponentCheckStatusEnum.None ||
temperature_start_check != ComponentCheckStatusEnum.None)
{
DialogResult dialogResult =
MessageBox.Show(
"WARNING! This will exit the program and shut down all ongoing processes" +
" Are you sure you want to exit?",
" Exit Application?",
MessageBoxButtons.YesNo);
if (dialogResult == DialogResult.No)
{
abort_oven_program = false;
close_program_inprogress = false;
return;
}
}
if (temperature_start_check == ComponentCheckStatusEnum.Running &&
read_check != ComponentCheckStatusEnum.None)
{
this.StopTC_Button.Text = "Stopping";
this.StopTC_Button.BackColor = Color.Firebrick;
}
if (oven_start_check == ComponentCheckStatusEnum.Running &&
oven_check != ComponentCheckStatusEnum.None)
{
this.StopOvenButton.Text = "Stopping";
this.StopOvenButton.BackColor = Color.Firebrick;
}
this.Refresh();
Thread.Sleep(1000);
if ((temperature_read_thread != null &&
temperature_read_thread.ThreadState != ThreadState.Stopped) ||
(oven_control_thread != null &&
oven_control_thread.ThreadState != ThreadState.Stopped) ||
(log_thread != null &&
log_thread.ThreadState != ThreadState.Stopped))
{
read_check = ComponentCheckStatusEnum.Aborted;
oven_check = ComponentCheckStatusEnum.Aborted;
log_check = ComponentCheckStatusEnum.Aborted;
oven_cooling_check = ComponentCheckStatusEnum.Aborted;
}
int counter = 0;
while ((temperature_read_thread != null &&
temperature_read_thread.ThreadState != ThreadState.Stopped &&
temperature_read_thread.ThreadState != ThreadState.Aborted) ||
(oven_control_thread != null &&
oven_control_thread.ThreadState != ThreadState.Stopped &&
oven_control_thread.ThreadState != ThreadState.Aborted) ||
(log_thread != null &&
log_thread.ThreadState != ThreadState.Stopped &&
log_thread.ThreadState != ThreadState.Aborted))
{
counter++;
if (counter > 10)
{
if (temperature_read_thread != null)
{
temperature_read_thread.Abort();
}
if (oven_control_thread != null)
{
oven_control_thread.Abort();
}
if (log_thread != null)
{
log_thread.Abort();
}
}
oven_cooling_check = ComponentCheckStatusEnum.Aborted;
Thread.Sleep(100);
}
log_thread = null;
this.Close();
}
// Helper function for IsError that gives user the option to respond to the error
public static ErrorCodeEnum IsError_WithExitOption(object sender, ErrorInfo error)
{
if (abort_oven_program) return ErrorCodeEnum.Error;
while (application_error_window_open)
{
Thread.Sleep(20);
}
if (abort_oven_program) return ErrorCodeEnum.Error;
try
{
USB_TC_Control_Form oven_form = (USB_TC_Control_Form)sender;
AbortOvenCode abortcode_del = new AbortOvenCode(oven_form.StopThreads_AndCloseOvenProgram);
if (error.Value != 0)
{
System.Windows.Forms.DialogResult user_resp = DialogResult.None;
application_error_window_open = true;
user_resp = MessageBox.Show(error.Message + Environment.NewLine +
"Click 'Cancel' to exit out of the oven program",
"Error",
MessageBoxButtons.OKCancel);
if (user_resp == DialogResult.Cancel)
{
abort_oven_program = true;
// Set check flags for the three threads (Oven PID
// Control, Read Temp, Log Temp) to -1 to end the
// threads
oven_check = ComponentCheckStatusEnum.Aborted;
read_check = ComponentCheckStatusEnum.Aborted;
log_check = ComponentCheckStatusEnum.Aborted;
// Pause 100 milliseconds
Thread.Sleep(100);
// Invoke the close/abort program delegate
oven_form.BeginInvoke(abortcode_del);
}
application_error_window_open = false;
return ErrorCodeEnum.Error;
}
}
catch(Exception e)
{
MessageBox.Show(
String.Format(
"Unexpected Error occurred while processing Oven Application Error." +
"{0}Error Message: {1}{0}" +
"Error Source: {2}{0}" +
"Stack Trace: {3}{0}",
Environment.NewLine,
e.Message,
e.Source,
e.StackTrace),
" Unexpected Error!");
//Call the single argument error handler
IsError(error);
}
return ErrorCodeEnum.NoError;
}
public void DoOvenCooling()
{
bool high_n2_on = false;
//Read Switch N2 to Air and Stop Temperatures Directly from the controls
//in case the user has changed them
float switch_temperature = 10000;
float stop_temperature = 10000;
switch_temperature = SwitchTemp_copy;
stop_temperature = StopTemp_copy;
//Lock CurrentTemperatures array for access by the oven thread.
IsLockedCurrentTemp_Array = true;
//Check to see if the oven temperature is below the Stop Cooling Temperature
bool already_below_stop_temp = true;
for (int i = 0; i < MAX_CHANCOUNT - NUM_WALLCOUNT; i++)
{
if (CurrentTemperatures[i] > stop_temperature)
{
//Don't need to check any more temperatures
//Temperature is too high to switch
i = MAX_CHANCOUNT;
already_below_stop_temp = false;
}
else
{
already_below_stop_temp = true;
}
}
//Unlock the CurrentTemperatures Array
IsLockedCurrentTemp_Array = false;
CoolingStarted = true;
//If the oven temperature is already below the stop cooling temperature
//Set flags to end cooling
//Else, start the Air or High Pressure N2
if (already_below_stop_temp)
{
oven_cooling_check = ComponentCheckStatusEnum.None;
}
else
{
//start cooling
if (CoolMethod_copy == "1")
{
SetAirRelayChannelOutput(AirChanStatusEnum.HighN2);
high_n2_on = true;
}
else
{
SetAirRelayChannelOutput(AirChanStatusEnum.Air);
high_n2_on = false;
}
}
while (oven_cooling_check == ComponentCheckStatusEnum.Running &&
oven_check != ComponentCheckStatusEnum.Aborted)
{
//Read Switch N2 to Air and Stop Temperatures Directly from the controls
//in case the user has changed them
switch_temperature = SwitchTemp_copy;
stop_temperature = StopTemp_copy;
IsLockedCurrentTemp_Array = true;
if (CoolMethod_copy == "1" &&
high_n2_on)
{
bool do_switch = true;
for (int i = 0; i < MAX_CHANCOUNT - NUM_WALLCOUNT; i++)
{
if (CurrentTemperatures[i] > switch_temperature)
{
//Don't need to check any more temperatures
//Temperature is too high to switch
i = MAX_CHANCOUNT;
do_switch = false;
}
else
{
do_switch = true;
}
}
if (do_switch)
{
SetAirRelayChannelOutput(AirChanStatusEnum.Air);
high_n2_on = false;
}
}
else
{
bool is_cooling_done = true;
for (int i = 0; i < MAX_CHANCOUNT - NUM_WALLCOUNT; i++)
{
if (CurrentTemperatures[i] > stop_temperature)
{
//Don't need to check any more temperatures
//Temperature is too high to switch
i = MAX_CHANCOUNT;
is_cooling_done = false;
}
else
{
is_cooling_done = true;
}
}
if (is_cooling_done)
{
//Set oven cooling check status to none to end the cooling loop
oven_cooling_check = ComponentCheckStatusEnum.None;
}
}
IsLockedCurrentTemp_Array = false;
//Sleep for five seconds
System.Threading.Thread.Sleep(5000);
}
SetAirRelayChannelOutput(AirChanStatusEnum.AirOff);
OvenRunDone = true;
CoolingStarted = false;
CoolingStarted_logged = false;
HeatingStopped = false;
HeatingStopped_logged = false;
//Stop reading the temperature
read_check = ComponentCheckStatusEnum.None;
}
// This function is called when the Start Oven button in the GUI is
// clicked. It sets the value of the global variable check to 3, and
// changes the Start Oven button color to Green.
private void StopOvenButton_Click(object sender, EventArgs e)
{
UserNameTextBox.ReadOnly = false;
UserNameTextBox.BorderStyle = BorderStyle.Fixed3D;
OvenNameTextBox.ReadOnly = false;
OvenNameTextBox.BorderStyle = BorderStyle.Fixed3D;
UserEmailTextBox.ReadOnly = false;
UserEmailTextBox.BorderStyle = BorderStyle.Fixed3D;
UserPhoneTextBox.ReadOnly = false;
UserPhoneTextBox.BorderStyle = BorderStyle.Fixed3D;
UserPhoneTextBox.BackColor = Color.White;
BatchIDCodeTextBox.ReadOnly = false;
BatchIDCodeTextBox.BorderStyle = BorderStyle.Fixed3D;
MaxTemperatureNumericUpDown.ReadOnly = false;
MaxTemperatureNumericUpDown.BorderStyle = BorderStyle.Fixed3D;
HoldTimeAtPeakNumericUpDown.ReadOnly = false;
HoldTimeAtPeakNumericUpDown.BorderStyle = BorderStyle.Fixed3D;
CoolMethodComboBox.Enabled = true;
if (oven_check != ComponentCheckStatusEnum.None)
{
DialogResult dialogResult =
MessageBox.Show(
"WARNING! This will stop the oven run process and shut down all coils!" +
" Are you sure you want to stop the oven run?",
" " +
"STOP OVEN WARNING",
MessageBoxButtons.YesNo);
if (dialogResult == DialogResult.Yes)
{
oven_check = ComponentCheckStatusEnum.None;
StartOvenButton.BackColor = default(Color);
if (oven_start_check != ComponentCheckStatusEnum.Running)
StopOvenButton.BackColor = Color.GreenYellow;
HeatingStopped = true;
HeatingStarted = false;
HeatingStarted_logged = false;
}
else
return;
}
return;
}
// This function is called when the Stop TC button in the GUI is
// clicked. It sets the value of the global variable read_check to 0,
// changes the Stop TC button color to Green, and resets the color of
// the Read TC button to default, so that the user knows which button
// was last clicked.
private void StopTCbutton_Click(object sender, EventArgs e)
{
if (oven_check == ComponentCheckStatusEnum.None)
{
UserEmailTextBox.Enabled = true;
UserPhoneTextBox.Enabled = true;
MaxTemperatureNumericUpDown.Enabled = true;
HoldTimeAtPeakNumericUpDown.Enabled = true;
CoolMethodComboBox.Enabled = true;
SwitchToAirTemperatureNumericUpDown.Enabled = true;
}
read_check = ComponentCheckStatusEnum.None;
ReadTC_Button.BackColor = default(Color);
for (int i = 0; i < MAX_CHANCOUNT; i++)
{
this.Controls["Channel" + i.ToString("#0") + "TextBox"].ForeColor = Color.Gray;
}
if (temperature_start_check != ComponentCheckStatusEnum.None)
StopTC_Button.BackColor = Color.GreenYellow;
}
private void StartCoolingButton_Click(object sender, EventArgs e)
{
//End Oven Heating
oven_check = ComponentCheckStatusEnum.None;
CoolingStarted = true;
}
// This function is called when the Start Oven button in the GUI is
// clicked. It sets the value of the global variable check to 3, and
// changes the Start Oven button color to Green.
private void StartOvenButton_Click(object sender, EventArgs e)
{
UserEmailTextBox.Enabled = true;
UserPhoneTextBox.Enabled = true;
MaxTemperatureNumericUpDown.Enabled = true;
HoldTimeAtPeakNumericUpDown.Enabled = true;
CoolMethodComboBox.Enabled = true;
SwitchToAirTemperatureNumericUpDown.Enabled = true;
if (CheckParameters(ParameterTypeEnum.Oven) !=
ErrorCodeEnum.NoError)
{
if (String.IsNullOrWhiteSpace(directory))
SaveLogFileDirectoryTextBox.BackColor = Color.MistyRose;
else
SaveLogFileDirectoryTextBox.BackColor = Color.White;
MessageBox.Show(
"Check and complete highlighted oven run" +
" parameters!",
" ERROR!");
return;
}
if (String.IsNullOrWhiteSpace(directory))
{
SaveLogFileDirectoryTextBox.BackColor = Color.MistyRose;
MessageBox.Show(
"Please choose a directory to save log " +
"file in!",
" " + "ERROR!");
return;
}
else
SaveLogFileDirectoryTextBox.BackColor = Color.White;
if (IsParametersChanged() ||
(temperature_start_check == ComponentCheckStatusEnum.Set &&
oven_start_check == ComponentCheckStatusEnum.None))
{
UpdateDirectory();
MessageBox.Show("Please double check all values, just to be " +
"sure. Click the Start Oven button when ready.", " Check Values");
CopyParameters();
oven_start_check = ComponentCheckStatusEnum.Set;
return;
}
UserNameTextBox.ReadOnly = true;
UserNameTextBox.BorderStyle = BorderStyle.FixedSingle;
UserEmailTextBox.ReadOnly = true;
UserEmailTextBox.BorderStyle = BorderStyle.FixedSingle;
UserPhoneTextBox.ReadOnly = true;
UserPhoneTextBox.BorderStyle = BorderStyle.FixedSingle;
UserPhoneTextBox.BackColor = Color.White;
BatchIDCodeTextBox.ReadOnly = true;
BatchIDCodeTextBox.BorderStyle = BorderStyle.FixedSingle;
//MaxTemperatureNumericUpDown.ReadOnly = true;
//MaxTemperatureNumericUpDown.BorderStyle = BorderStyle.FixedSingle;
//HoldTimeAtPeakNumericUpDown.ReadOnly = true;
//HoldTimeAtPeakNumericUpDown.BorderStyle = BorderStyle.FixedSingle;
OvenNameTextBox.ReadOnly = true;
OvenNameTextBox.BorderStyle = BorderStyle.FixedSingle;
CoolMethodComboBox.Enabled = false;
//SwitchToAirTemperatureNumericUpDown.ReadOnly = true;
//SwitchToAirTemperatureNumericUpDown.BorderStyle = BorderStyle.FixedSingle;
if (IsParametersChanged())
UpdateDirectory();
if (oven_check != ComponentCheckStatusEnum.Running)
{
Start_Oven_Time = DateTime.Now;
OvenStartTimeTextBox.Text = Start_Oven_Time.ToString("T");
graph_check++;
}
CopyParameters();
int count = 0;
for (int i = 0; i < MAX_CHANCOUNT; i++)
{
if (((CheckBox)this.Controls["Channel" +
i.ToString("#0") + "CheckBox"]).Enabled == true &&
((CheckBox)this.Controls["Channel" +
i.ToString("#0") + "CheckBox"]).Checked == true)
{
count++;
}
}
if (count == 0)
{
not_showing_temp = true;
}
if (not_showing_temp == true)
{
ResetThemocoupleInputStatusCheckboxes();
not_showing_temp = false;
}
// Start thread once the Start Oven button is clicked for the
// first time.
if (oven_start_check == ComponentCheckStatusEnum.Set)
{
oven_control_thread = new Thread(new ThreadStart(PID_control));
oven_control_thread.Start();
oven_start_check = ComponentCheckStatusEnum.Running;
CopyParameters();
if (temperature_start_check != ComponentCheckStatusEnum.Running)
{
temperature_read_thread = new Thread(new ThreadStart(ReadTemperature));
temperature_read_thread.Start();
temperature_start_check = ComponentCheckStatusEnum.Running;
if (log_check != ComponentCheckStatusEnum.Running)
{
log_thread = new Thread(new ThreadStart(UpdateLog));
log_check = ComponentCheckStatusEnum.Running;
log_state = LogStatusEnum.NotLogged;
log_thread.Start();
}
read_check = ComponentCheckStatusEnum.Running;
ReadTC_Button.BackColor = Color.GreenYellow;
StopTC_Button.BackColor = default(Color);
}
}
oven_check = ComponentCheckStatusEnum.Running;
StopOvenButton.BackColor = default(Color);
StartOvenButton.BackColor = Color.GreenYellow;
}
// This function is called when the Read TC button in the GUI is
// clicked. It sets the value of the global variable read_check to 1,
// changes the Read TC button color to Green, and resets the color of
// the Stop TC button to default, so that the user knows which button
// was last clicked.
private void ReadThermoCouplesbutton_Click(object sender, EventArgs e)
{
if (!String.IsNullOrWhiteSpace(WarningTextBox.Text))
{
if (not_showing_temp == true)
ResetThemocoupleInputStatusCheckboxes();
UpdateWarningDisplay("", ErrorCodeEnum.NoError);
}
if (temperature_start_check == ComponentCheckStatusEnum.None &&
oven_start_check == ComponentCheckStatusEnum.None)
ResetInputControls();
if (CheckParameters(ParameterTypeEnum.ThermoCouples) != ErrorCodeEnum.NoError)
{
MessageBox.Show(
"Check and complete highlighted thermocouple" +
" read parameters!",
" ERROR!");
return;
}
UpdateDirectory();
if (String.IsNullOrWhiteSpace(directory))
{
SaveLogFileDirectoryTextBox.BackColor = Color.MistyRose;
MessageBox.Show(
String.Format(
"Please choose a directory to save log file in!{0}" +
"Also add other (optional) parameters, like the batch " +
"code and email address...",
Environment.NewLine),
" " + "ERROR!");
return;
}
else
{
SaveLogFileDirectoryTextBox.BackColor = Color.White;
}
if (IsParametersChanged())
{
UpdateDirectory();
MessageBox.Show(
"Please double check all values, just to be " +
"sure. Click the Read TC button when ready.",
" Check Values");
CopyParameters();
return;
}
UserNameTextBox.ReadOnly = true;
UserNameTextBox.BorderStyle = BorderStyle.FixedSingle;
BatchIDCodeTextBox.ReadOnly = true;
BatchIDCodeTextBox.BorderStyle = BorderStyle.FixedSingle;
OvenNameTextBox.ReadOnly = true;
OvenNameTextBox.BorderStyle = BorderStyle.FixedSingle;
UserEmailTextBox.Enabled = false;
UserPhoneTextBox.Enabled = false;
SwitchToAirTemperatureNumericUpDown.Enabled = false;
MaxTemperatureNumericUpDown.Enabled = false;
HoldTimeAtPeakNumericUpDown.Enabled = false;
CoolMethodComboBox.Enabled = false;
UserPhoneTextBox.BackColor = Color.White;
// Create and start the threads when the Read TC button is clicked
// for the first time. Log thread and the temperature read thread
// are the two threads started here
if (temperature_start_check == ComponentCheckStatusEnum.None)
{
CopyParameters();
Start_Temp_Time = DateTime.Now;
Start_Log_File_Time = Start_Temp_Time;
temperature_read_thread = new Thread(new ThreadStart(ReadTemperature));
temperature_read_thread.Start();
temperature_start_check = ComponentCheckStatusEnum.Running;
if (log_check != ComponentCheckStatusEnum.Running)
{
log_thread = new Thread(new ThreadStart(UpdateLog));
log_check = ComponentCheckStatusEnum.Running;
log_state = LogStatusEnum.NotLogged;
log_thread.Start();
}
}
if (IsParametersChanged())
UpdateDirectory();
if (read_check != ComponentCheckStatusEnum.Running)
Start_Temp_Time = DateTime.Now;
read_check = ComponentCheckStatusEnum.Running;
warning_time = 20;
ReadTC_Button.BackColor = Color.GreenYellow;
StopTC_Button.BackColor = default(Color);
}
// This function reads and displays the temperature inputs by detecting
// the buttons clicked, by detecting the value of the variable "check".
// It runs a while loop to keep checking for button presses, and using
// Thread.Sleep(), it checks buttons, reads and displays temperatures in
// the selected scale at a set frequency (2 Hz). The loop ends when the
// value of check is set to -1 by clicking the Exit button. Temperatures
// are read using the TInScan function, and an array is passed to the
// update_temp() function to display them using a delegate.
private void ReadTemperature()
{
while (read_check != ComponentCheckStatusEnum.Aborted)
{
int count = 0;
float[] TempData = new float[MAX_CHANCOUNT];
float[] TempData_C = new float[MAX_CHANCOUNT];
MccDaq.ErrorInfo RetVal;
Update_Temperature update_temp_del = new
Update_Temperature(UpdateTemperatureDisplays);
Update_Warning update_warning_del = new
Update_Warning(UpdateWarningDisplay);
Reset_Checkboxes resetcheckboxes_del = new
Reset_Checkboxes(ResetThemocoupleInputStatusCheckboxes);
for (int i = 0; i < MAX_CHANCOUNT; i++)
{
if (((CheckBox)this.Controls["Channel" +
i.ToString("#0") + "CheckBox"]).Enabled == true &&
((CheckBox)this.Controls["Channel" +
i.ToString("#0") + "CheckBox"]).Checked == true)
{
count++;
}
}
if (count == 0)
{
TempData = new float[MAX_CHANCOUNT] {-9999, -9999,
-9999, -9999, -9999, -9999, -9999, -9999};
//Array.Copy(TempData, TempData_C, 8);
not_showing_temp = true;
//BeginInvoke(update_temp_del, TempData, TempData_C);
}
else
not_showing_temp = false;
if (read_check == ComponentCheckStatusEnum.Running &&
not_showing_temp == false)
{
for (int i = 0; i < MAX_CHANCOUNT; i++)
{
if (((CheckBox)this.Controls["Channel" +
i.ToString("#0") + "CheckBox"]).Checked == true) // null object reference error, suggests using "new" keyword
{
RetVal = thermocouple_board.TIn(i, TempScale.Celsius,
out TempData_C[i],
ThermocoupleOptions.Filter);
IsError(this, RetVal, true);
}
else
TempData_C[i] = -9999;
while (IsLockedCurrentTemp_Array)
{
//Nothing - pause till lock lifted
}
CurrentTemperatures[i] = TempData_C[i];
if (PlateauTemperatureWindow == null)
PlateauTemperatureWindow = new List<float[]>();
AddToMaxTemperaturePlateau(ref TempData_C);
MaxTempPlateauReached = IsAtSetTemperaturePlateau();
}
switch (my_TempScale)
{
case TempScale.Fahrenheit:
for (int i = 0; i < MAX_CHANCOUNT; i++)
{
if (((CheckBox)this.Controls["Channel" +
i.ToString("#0") + "CheckBox"]).Checked == true)
{
RetVal = thermocouple_board.TIn(i, TempScale.Fahrenheit,
out TempData[i],
ThermocoupleOptions.Filter);
IsError(this, RetVal, true);
}
else
TempData[i] = -9999;
}
break;
case TempScale.Kelvin:
for (int i = 0; i < MAX_CHANCOUNT; i++)
{
if (((CheckBox)this.Controls["Channel" +
i.ToString("#0") + "CheckBox"]).Checked == true)
{
RetVal = thermocouple_board.TIn(i, TempScale.Kelvin,
out TempData[i],
ThermocoupleOptions.Filter);
IsError(this, RetVal, true);
}
else
TempData[i] = -9999;
}
break;
default:
for (int i = 0; i < MAX_CHANCOUNT; i++)
{
if (((CheckBox)this.Controls["Channel" +
i.ToString("#0") + "CheckBox"]).Checked == true)
{
RetVal = thermocouple_board.TIn(i, TempScale.Celsius,
out TempData[i],
ThermocoupleOptions.Filter);
IsError(this, RetVal, true);
}
else
TempData[i] = -9999;
}
break;
}
BeginInvoke(update_temp_del, TempData, TempData_C);
System.Threading.Thread.Sleep(500);
}
if ((read_check == ComponentCheckStatusEnum.None &&
oven_check == ComponentCheckStatusEnum.Running) ||
(not_showing_temp == true &&
oven_check == ComponentCheckStatusEnum.Running))
{
string temp =
String.Format(
"WARNING! Temperature readings are no longer live during an oven run!{0}" +
"Automatically fixing this in {1} seconds...",
Environment.NewLine,
((int)(warning_time / 2)).ToString("0"));
BeginInvoke(update_warning_del, temp, 1);
Thread.Sleep(500);
warning_time--;
if (warning_time <= 0)
{
read_check = ComponentCheckStatusEnum.Running;
BeginInvoke(resetcheckboxes_del);
not_showing_temp = false;
BeginInvoke(update_warning_del, " ", 0);
warning_time = 20;
}
}
// Make sure that the text is grayed out when the Stop TC button
// is in its clicked state.
if (read_check == ComponentCheckStatusEnum.None &&
oven_check != ComponentCheckStatusEnum.Running)
{
TempData[0] = 1234;
TempData_C[0] = 1234;
BeginInvoke(update_temp_del, TempData, TempData_C);
Thread.Sleep(500);
}
}
}
// Necessary constructor for the program to load properly.
public USB_TC_Control_Form()
{
Program.splash_screen_form.BeginInvoke(
(Action)(() => Program.splash_screen_form.WaitForHideSplashScreen()));
InitializeComponent();
StartCoolingButton.Enabled = false;
System.Windows.Forms.DialogResult user_resp = System.Windows.Forms.DialogResult.None;
do
{
// Locate the USB-TC and give it a number.
// BNum is a TextBox
BoardNum = GetBoardNum(DEVICE, UsbThermoCoupleDaqBoardNumberTextBox);
if (BoardNum == -1)
{
user_resp =
MessageBox.Show(String.Format("No USB-{0} Thermocouple Input DAQ Device detected! "
+ "Click 'Cancel' to exit out of the oven program.",
DEVICE),
"Comm Error",
MessageBoxButtons.RetryCancel);
// Throw an error message if no USB-TC device is found. It is
// recommended to first locate and caliberate the board in
// InstaCal before use.
// Give user the option to exit from the code in the modal error message window.
if (user_resp == System.Windows.Forms.DialogResult.Cancel)
{
StopThreads_AndCloseOvenProgram();
return;
}
}
else
{
// Set default value for the button press detection variables.
read_check = ComponentCheckStatusEnum.None;
oven_check = ComponentCheckStatusEnum.None;
log_check = ComponentCheckStatusEnum.None;
//Instantiate boards for ThermoCouples and Oven
SetupThermoCoupleDAQBoard();
SetupOvenDAQBoard();
}
} while (user_resp == System.Windows.Forms.DialogResult.Retry);
// Detect number of connected thermocouples
DetectThermoCoupleInputs();
Outer_HeatingElementStatusButton.BackColor = ElementOffColor;
Inner_HeatingElementStatusButton.BackColor = ElementOffColor;
SampleZone_HeatingElementStatusButton.BackColor = ElementOffColor;
// Default batch code
BatchIDCodeTextBox.Text = "_";
// Default user
UserNameTextBox.Text = "User";
// Default email
UserEmailTextBox.Text = "*****@*****.**";
// Default phone
UserPhoneTextBox.Text = "111-222-3333";
// Default max. temp
MaxTemperatureNumericUpDown.Value = 50;
// Default hold time
HoldTimeAtPeakNumericUpDown.Value = 30;
// Default Stop Cooling Temperature
StopCoolingTemperatureNumericUpDown.Value = 25;
// Default cooling method is Nitrogen
CoolMethodComboBox.SelectedIndex = 1;
// Setup graph
TempertureVsTimeGraph.ChartAreas[0].BackColor = Color.Black;
TempertureVsTimeGraph.ChartAreas[0].AxisX.MajorGrid.LineColor =
Color.DarkSlateGray;
TempertureVsTimeGraph.ChartAreas[0].AxisY.MajorGrid.LineColor =
Color.DarkSlateGray;
TempertureVsTimeGraph.ChartAreas[0].AxisX.Minimum = 0;
TempertureVsTimeGraph.ChartAreas[0].AxisY.Minimum = 0;
TempertureVsTimeGraph.Series[
Enum.GetName(typeof(TemperatureVsTimeDataSeriesEnum),
TemperatureVsTimeDataSeriesEnum.TrayOuter_Edge)].Points.AddXY(0, 0);
TempertureVsTimeGraph.Series[
Enum.GetName(typeof(TemperatureVsTimeDataSeriesEnum),
TemperatureVsTimeDataSeriesEnum.TraySampleZone_Edge)].Points.AddXY(0, 0);
TempertureVsTimeGraph.Series[
Enum.GetName(typeof(TemperatureVsTimeDataSeriesEnum),
TemperatureVsTimeDataSeriesEnum.TrayInner_Edge)].Points.AddXY(0, 0);
TempertureVsTimeGraph.Series[
Enum.GetName(typeof(TemperatureVsTimeDataSeriesEnum),
TemperatureVsTimeDataSeriesEnum.TrayOuter_Center)].Points.AddXY(0, 0);
TempertureVsTimeGraph.Series[
Enum.GetName(typeof(TemperatureVsTimeDataSeriesEnum),
TemperatureVsTimeDataSeriesEnum.TraySampleZone_Center)].Points.AddXY(0, 0);
TempertureVsTimeGraph.Series[
Enum.GetName(typeof(TemperatureVsTimeDataSeriesEnum),
TemperatureVsTimeDataSeriesEnum.TrayInner_Center)].Points.AddXY(0, 0);
TempertureVsTimeGraph.Series[
Enum.GetName(typeof(TemperatureVsTimeDataSeriesEnum),
TemperatureVsTimeDataSeriesEnum.Inner)].Points.AddXY(0, 0);
TempertureVsTimeGraph.Series[
Enum.GetName(typeof(TemperatureVsTimeDataSeriesEnum),
TemperatureVsTimeDataSeriesEnum.Outer)].Points.AddXY(0, 0);
}
// This function implements PID control in the oven, by using three
// USB-TC output channels. It calls the functions channel_out() to
// control the heater coils according to the known setup.
private void PID_control()
{
int count = 0;
oven_pid_settings = Program.pid_settings_form.ProgramPidSettings;
set_point_temperature = MaxTemp_copy;
double[] CurrentTemp_EachZone = new double[3] { 0, 0, 0 };
double[] PreviousTemp_EachZone = new double[3] { 0, 0, 0 };
int heat_increment_time_in_milliseconds = (int)((oven_pid_settings.cycle_time_in_seconds / 110) * 1000);
//Heat per each zone
int[] heat_EachZone = new int[3] { 0, 0, 0 };
//rate correction per each zone
double[] rate_correction_EachZone = new double[3] { 0, 0, 0 };
bool fill_n2_check = false;
bool n2_running_check = false;
bool outer_coil_on = false;
bool inner_coil_on = false;
bool sample_zone_coil_on = false;
SetOvenChannelOutput(OvenChanEnum.AllOff); // start with all oven channels off
SetAirRelayChannelOutput(AirChanStatusEnum.AirOff); //Start with air switched off
if (CoolMethod_copy == "1" &&
n2_running_check == false)
{
// Flow high pressure nitrogen for 10 seconds to fill
// the oven cavity with nitrogen
if (fill_n2_check == false)
{
count = 0;
SetAirRelayChannelOutput(AirChanStatusEnum.HighN2);
while (count <= 10)
{
Thread.Sleep(1000);
count++;
}
fill_n2_check = true;
SetAirRelayChannelOutput(AirChanStatusEnum.AirOff);
}
// Low pressure N2 trickle begins
SetAirRelayChannelOutput(AirChanStatusEnum.LowN2);
n2_running_check = true;
bool low_n2_adjusted = false;
while (!low_n2_adjusted)
{
MessageBox.Show(
"Please change the Low N2 Gauge Level (by twisting the Gauge now) until " +
"the black indicator bead is beween the two black arrows. ",
"Set Gauge Level",
MessageBoxButtons.OK);
DialogResult result =
MessageBox.Show(
"Is the Low N2 Gauge set to the correct level?",
"Verify Gauge Level",
MessageBoxButtons.YesNo);
if (result == System.Windows.Forms.DialogResult.Yes)
{
low_n2_adjusted = true;
}
}
}
EnableStartOvenButton start_oven_button_del = new EnableStartOvenButton(EnableStartCoolingButton);
StartCoolingButton.BeginInvoke(start_oven_button_del);
HeatingStarted = true;
while (oven_check == ComponentCheckStatusEnum.Running)
{
Heat_Time = DateTime.Now;
DateTime start_heat_increment;
DateTime end_heat_increment;
for (int i = 1; i <= 100; i++)
{
start_heat_increment = DateTime.Now;
if (heat_EachZone[0] > 0)
{
if (!outer_coil_on)
{
SetOvenChannelOutput(OvenChanEnum.Outer, OvenHeatOnOffEnum.On);
outer_coil_on = true;
}
}
else
{
SetOvenChannelOutput(OvenChanEnum.Outer, OvenHeatOnOffEnum.Off);
outer_coil_on = false;
}
if (heat_EachZone[1] > 0)
{
if (!sample_zone_coil_on)
{
SetOvenChannelOutput(OvenChanEnum.SampleZone, OvenHeatOnOffEnum.On);
sample_zone_coil_on = true;
}
}
else
{
SetOvenChannelOutput(OvenChanEnum.SampleZone, OvenHeatOnOffEnum.Off);
sample_zone_coil_on = false;
}
if (heat_EachZone[2] > 0)
{
if (!inner_coil_on)
{
SetOvenChannelOutput(OvenChanEnum.Inner, OvenHeatOnOffEnum.On);
inner_coil_on = true;
}
}
else
{
SetOvenChannelOutput(OvenChanEnum.Inner, OvenHeatOnOffEnum.Off);
inner_coil_on = false;
}
for (int j = 0; j < 3; j++)
{
heat_EachZone[j]--;
}
end_heat_increment = DateTime.Now;
TimeSpan heat_increment_duration = (end_heat_increment - start_heat_increment);
if (heat_increment_duration.TotalMilliseconds < heat_increment_time_in_milliseconds)
{
System.Threading.Thread.Sleep((int)(heat_increment_time_in_milliseconds - heat_increment_duration.TotalMilliseconds));
}
//If Set Temp Reached and Start Set Temp Hold Time not set
//Set Start Set Temp Hold Time
if (MaxTempPlateauReached &&
!MaxTemp_StartTime_Set)
{
MaxTemp_StartTime = DateTime.Now;
MaxTemp_StartTime_Set = true;
}
//If Set Temp Reached, then wait Hold Time till start cool down
//Use MaxTemp_StartTime to determine the curent duration of the Hold Peak Time
if (MaxTempPlateauReached)
{
TimeSpan peak_duration = DateTime.Now - MaxTemp_StartTime;
double hold_time_minutes = HoldTime_copy.TotalMinutes;
HoldTimeRemaining_copy = (hold_time_minutes - peak_duration.TotalMinutes).ToString("#0.0#");
HoldTimeRemainingTextBox.BeginInvoke((Action)(() => HoldTimeRemainingTextBox.Text = HoldTimeRemaining_copy));
if (peak_duration.TotalMinutes > hold_time_minutes)
{
oven_check = ComponentCheckStatusEnum.None;
}
}
}
//turn off oven heat outside of heating cycle
SetOvenChannelOutput(OvenChanEnum.OvenOff);
inner_coil_on = false;
outer_coil_on = false;
sample_zone_coil_on = false;
///////////////////////////////////////////////////////////////
//Set interlock for PID cycle reading temperature
IsLockedCurrentTemp_Array = true;
//Select Max Temperature on the Outer Zone of the Sample tray
CurrentTemp_EachZone[0] = Math.Max(CurrentTemperatures[0],
CurrentTemperatures[5]);
//Select Max Temperature at Sample Tray in Sample Zone
CurrentTemp_EachZone[1] = Math.Max(CurrentTemperatures[1],
CurrentTemperatures[4]);
//Select Max Temperature at Sample Tray in Inner Zone
CurrentTemp_EachZone[2] = Math.Max(CurrentTemperatures[2],
CurrentTemperatures[3]);
IsLockedCurrentTemp_Array = false;
for (int i = 0; i < 3; i++)
{
//Make sure a Previous Temp of Zero is never used
//this will throw off the rate correction parameter
if (PreviousTemp_EachZone[i] == 0)
PreviousTemp_EachZone[i] = CurrentTemp_EachZone[i];
//Calculate the rate correction - D in PID
rate_correction_EachZone[i] =
(PreviousTemp_EachZone[i] - CurrentTemp_EachZone[i]) * 100 * oven_pid_settings.rate_EachZone[i];
//Calculate the heat duty cycle % parameter from P, I, & D
heat_EachZone[i] =
(int)((100 / oven_pid_settings.proportional_band_EachZone[i]) *
(set_point_temperature - CurrentTemp_EachZone[i]) +
oven_pid_settings.offset_EachZone[i] +
rate_correction_EachZone[i]);
//Anti-windup - prevent I from incrementing unless we're heating
//and at set-point
if (heat_EachZone[i] < 100 &&
heat_EachZone[i] > 0 &&
rate_correction_EachZone[i] == 0)
oven_pid_settings.offset_EachZone[i] +=
(set_point_temperature - CurrentTemp_EachZone[i]) * oven_pid_settings.reset_EachZone[i];
//Store current temp to previous temp for next cycle's calculation of the
//Rate Correction (D) component.
PreviousTemp_EachZone[i] = CurrentTemp_EachZone[i];
}
}
oven_start_check = ComponentCheckStatusEnum.None;
//turn off oven heat outside of heating cycle
SetOvenChannelOutput(OvenChanEnum.OvenOff);
inner_coil_on = false;
outer_coil_on = false;
sample_zone_coil_on = false;
HeatingStopped = true;
MaxTempPlateauReached = false;
MaxTemp_StartTime_Set = false;
HeatingStarted = false;
HeatingStarted_logged = false;
MaxTempReached_logged = false;
//If not thread aborting, start cooling
if (oven_control_thread.ThreadState == ThreadState.AbortRequested ||
oven_control_thread.ThreadState == ThreadState.Aborted)
return;
if (oven_check == ComponentCheckStatusEnum.Aborted) return;
oven_cooling_check = ComponentCheckStatusEnum.Running;
DoOvenCooling();
}
// This function updates the temperature log text file. It returns if
// the number of channels is invalid. Otherwise, it uses a while loop to
// output temperature readings to a .txt file in the same directory as
// the program folder. It shows an error if there is an open channel.
public void UpdateLog()
{
string subject = "";
string body = "";
string separator = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" +
"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" +
"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" +
"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
while (log_check == ComponentCheckStatusEnum.Running &&
log_thread.ThreadState != ThreadState.AbortRequested)
{
if (log_state == LogStatusEnum.NotLogged)
{
log_state = LogStatusEnum.Logged;
string[] text1 =
{"Temperature and events log file.",
" ",
"Created on " +
Start_Log_File_Time.ToString(format),
" ",
"Temperature read approx. every 5 " +
"seconds in degrees Celsius.",
" ",
" "};
System.IO.File.WriteAllLines(directory, text1);
string text2 = "Time\t";
for (int i = 0; i < MAX_CHANCOUNT; i++)
{
text2 += String.Format("Channel{0}", i) + "\t";
}
using (StreamWriter sw = File.AppendText(directory))
{
sw.WriteLine(text2);
sw.WriteLine(" ");
}
}
if (HeatingStarted && !HeatingStarted_logged)
{
string temp = DateTime.Now.ToString("T") + "\t\t" +
"HEATING STARTED!";
using (StreamWriter sw = File.AppendText(directory))
{
sw.WriteLine(" ");
sw.WriteLine(separator);
sw.WriteLine(" ");
sw.WriteLine(temp);
sw.WriteLine("\t\t\tUser: "******"\t\t\tBatch code: " + BatchCode_copy);
sw.WriteLine("\t\t\tMax. Temperature: " + MaxTemp_copy);
sw.WriteLine("\t\t\tHold Time: " + HoldTime_copy);
sw.WriteLine("\t\t\tCooling method: " + CoolMethod_copy);
sw.WriteLine(" ");
sw.WriteLine(separator);
sw.WriteLine(" ");
}
subject = "Heating has started on " + OvenName_copy +
" oven!";
body = User_copy + ",\n\n" + subject +
"\n\nParameters are: \nBatch Code: " + BatchCode_copy +
"\nMax.Temp: " + MaxTemp_copy +
"\nHold Time: " + HoldTime_copy +
"\nCooling Method: " + CoolMethod_copy +
"\nTime: " + OvenStartTime_copy + "\n";
SendEmail(subject, body);
HeatingStarted_logged = true;
}
else if (HeatingStopped && !HeatingStopped_logged)
{
string temp = DateTime.Now.ToString("T") + "\t\t" +
"HEATING STOPPED!";
using (StreamWriter sw = File.AppendText(directory))
{
sw.WriteLine(" ");
sw.WriteLine(separator);
sw.WriteLine(" ");
sw.WriteLine(temp);
sw.WriteLine(" ");
sw.WriteLine(separator);
sw.WriteLine(" ");
}
subject = "Heating has stopped on " + OvenName_copy +
" oven!";
body = User_copy + ",\n\n" + subject;
SendEmail(subject, body);
HeatingStopped_logged = true;
}
else if (MaxTempPlateauReached && !MaxTempReached_logged)
{
string temp = DateTime.Now.ToString("T") + "\t\t" +
"MAX. TEMP REACHED!";
using (StreamWriter sw = File.AppendText(directory))
{
sw.WriteLine(" ");
sw.WriteLine(separator);
sw.WriteLine(" ");
sw.WriteLine(temp);
sw.WriteLine(" ");
sw.WriteLine(separator);
sw.WriteLine(" ");
}
subject = "Max. temp reached on " + OvenName_copy +
" oven!";
body = User_copy + ",\n\n" + subject;
SendEmail(subject, body);
MaxTempReached_logged = true;
}
else if (CoolingStarted && !CoolingStarted_logged)
{
string temp = DateTime.Now.ToString("T") + "\t\t" +
"COOLING STARTED!";
using (StreamWriter sw = File.AppendText(directory))
{
sw.WriteLine(" ");
sw.WriteLine(separator);
sw.WriteLine(" ");
sw.WriteLine(temp);
sw.WriteLine(" ");
sw.WriteLine(separator);
sw.WriteLine(" ");
}
subject = "Cooling has started on " + OvenName_copy +
" oven!";
body = User_copy + ",\n\n" + subject;
SendEmail(subject, body);
CoolingStarted_logged = true;
}
else if (IsCriticalApplicationError && !IsCriticalApplicationError_logged)
{
string temp = DateTime.Now.ToString("T") + "\t\t" +
"CRITICAL ERROR!";
using (StreamWriter sw = File.AppendText(directory))
{
sw.WriteLine(" ");
sw.WriteLine(separator);
sw.WriteLine(" ");
sw.WriteLine(temp);
sw.WriteLine(" ");
sw.WriteLine(separator);
sw.WriteLine(" ");
}
subject = "Critical error on " + OvenName_copy + " oven!";
body = User_copy + ",\n\n" + subject + "\n" +
CriticalErrorMessage;
SendEmail(subject, body);
IsCriticalApplicationError_logged = true;
}
else if (OvenRunDone && !OvenRunDone_logged)
{
string temp = DateTime.Now.ToString("T") + "\t\t" +
"OVEN RUN COMPLETE!";
using (StreamWriter sw = File.AppendText(directory))
{
sw.WriteLine(" ");
sw.WriteLine(separator);
sw.WriteLine(" ");
sw.WriteLine(temp);
sw.WriteLine("\t\t\tUser: "******"\t\t\tBatch code: " + BatchCode_copy);
sw.WriteLine("\t\t\tMax. Temperature: " + MaxTemp_copy);
sw.WriteLine("\t\t\tHold Time: " + HoldTime_copy);
sw.WriteLine("\t\t\tCooling method: " + CoolMethod_copy);
sw.WriteLine(" ");
sw.WriteLine(separator);
sw.WriteLine(" ");
}
subject = "Oven run completed on " + OvenName_copy + " oven!";
body = User_copy + ",\n\n" + subject + "\n";
SendEmail(subject, body);
//Stop Logging -- Oven run is done
log_check = ComponentCheckStatusEnum.None;
}
string text3 = DateTime.Now.ToString("T") + "\t";
for (int i = 0; i < MAX_CHANCOUNT; i++)
{
text3 += CurrentTemperatures[i].ToString() + "\t";
}
using (StreamWriter sw = File.AppendText(directory))
{
sw.WriteLine(text3);
}
Thread.Sleep(4800);
}
OvenRunDone = false;
OvenRunDone_logged = false;
}
