//===========================================================================
void Tform_Main::run_FFT ( CCollection<short int> *in, CCollectionStorage<float> *fft, float *CentralFreq, float minFreq, float maxFreq )
{
int aPower;
CCollection<float> re; re.Clear();
CCollection<float> im; im.Clear();
int counter = 0;
int MaximumIndex = -1;
float temp;
SoundData.Get_Maximum_ext(&temp, &MaximumIndex);
for ( unsigned int i = MaximumIndex; i < SoundData.ValuesCount; i++) {
re.Add(SoundData.Values[i]);
//re.Add(LoadedData.Items[1]->Values[i]);
im.Add(0);
if ( counter++ > 263144 ) break; /// --- Если больше 2 ^18 ----
}
// ******************
FFT(&re, &im, &aPower);
// ******************
// -----
fft->SetItemsCount(2);
int DataCount = exp(aPower * std::log(2.0));
for ( int i = 0; i < DataCount / 2; i++)
{
double xVal = i / (double)DataCount * WorkFreq;
if ( xVal >= minFreq && xVal < maxFreq )
{
double yVal = sqrt(re.Values[i]*re.Values[i] + im.Values[i]*im.Values[i])*2.0 / (double)DataCount;
fft->Items[0]->Add(xVal);
fft->Items[1]->Add(yVal);
}
}
// int array_index = -1;
// float array_value = -1;
// fft->Items[1]->Get_Maximum_ext(&array_value, &array_index);
// *CentralFreq = fft->Items[0]->Values[array_index];
}
//===========================================================================
void __fastcall TfrmMain::bAddCanalsClick(TObject *Sender)
{
int ButtonTag = ((TButton*)Sender)->Tag;
if ( CheckListBox1->Items->Count == 0 ) return;
int CountCheckedItems = 0;
for ( int i = 0; i < CheckListBox1->Items->Count; i++ )
if ( CheckListBox1->Checked[i] == true ) CountCheckedItems++;
if ( CountCheckedItems != 2 )
{
MessageBox(NULL, "Выберите два сигнала для проведения операции", "Signal - Ошибка", MB_OK|MB_ICONERROR|MB_TASKMODAL);
return;
}
// ----- Количество выделенных елементов ---------
CurrentWorkDevice->Canals->Add();
CCollection<short int> *BaseCol = NULL;;
CCollection<short int> *SecondCol = NULL;;
CCollection<short int> *NewCol = CurrentWorkDevice->Canals->Items[CurrentWorkDevice->Canals->ItemsCount - 1];
short int *Base = NULL;
short int *Second = NULL;
// -----
for ( int i = 0; i < CheckListBox1->Items->Count; i++ )
if ( CheckListBox1->Checked[i] == true )
{
if ( Base == NULL )
{
BaseCol = (CCollection<short int> *)CheckListBox1->Items->Objects[i];
Base = BaseCol->Values;
}
else
{
SecondCol = (CCollection<short int> *)CheckListBox1->Items->Objects[i];
Second = SecondCol->Values;
}
}
// -----
NewCol->ValueT0 = BaseCol->ValueT0;
NewCol->gr_YVoltTransformCoef = BaseCol->gr_YVoltTransformCoef;
// -----
int CountData = ((CCollection<short int> *)CheckListBox1->Items->Objects[0])->Count;
char *val = (char*) malloc (100);
if ( ButtonTag == 0 )
{
for ( int i = 0; i < CountData; i++ )NewCol->Add(Base[i] + Second[i]);
sprintf (val, "%s_p_%s", BaseCol->Name, SecondCol->Name);
}
else
{
for ( int i = 0; i < CountData; i++ )NewCol->Add(Base[i] - Second[i]);
sprintf (val, "%s_m_%s", BaseCol->Name, SecondCol->Name);
}
NewCol->SetName(val);
free(val);
SetInterfaceParam();
Application->ProcessMessages();
rgVoltScalesClick(Sender);
rgTimeScalesClick(Sender);
// -----
BChart->DrawSeriesValues();
BChart->Canals = BChart->Canals;
BChart->pbMain->Repaint();
Application->ProcessMessages();
// -----
bAutoPositionClick(Sender);
}
//===========================================================================
void __fastcall Tform_Main::button_StartDTFCalcClick1(TObject *Sender)
{
DecimalSeparator = '.';
if ( listbox_DTFFreqs->Items->Count != 0 )
if ( listbox_DTFFreqs->ItemIndex != -1 )
ResonatorFreq = StrToFloat(listbox_DTFFreqs->Items->Strings[listbox_DTFFreqs->ItemIndex]);
PageControl1->TabIndex = 3;
PageControl2->TabIndex = 0;
Application->ProcessMessages();
ClearSeries(Chart2, true);
Chart2->AutoSize = true;
// -----------------------------------------
AddStringToLog("DFT Calculate");
// -----------------------------------------
// -----------
float Freq1 = 0;
float Freq2 = 0;
try {
Freq1 = StrToFloat( e_Freq1->Text );
Freq2 = StrToFloat( e_Freq2->Text );
} catch (...)
{
MessageBox(Handle, "Ошибка ввода диапазона частот", "Ошибка", 0);
return;
}
// ----------- Чарт -----------
ClearSeries(Chart2, true);
button_StartDTFCalc->Enabled = false;
button_StopDTFCalc ->Enabled = true;
isDTFStoped = false;
////////////////////////////////
/*
SoundData.Clear();
Freq1 = 5929.56;
Freq2 = 5932.56;
WorkFreq = 48000;
for ( int i = 0; i < 500000; i++)
SoundData.Add(10000.0 * sin(TWO_PI*5931.06*i / (float)WorkFreq));
*/
////////////////////////////////
// --------------
///////////////
int CountData = SoundData.ValuesCount;
float *x_r = (float*) malloc (sizeof(float) * CountData);
float s_r;
float s_i;
float t_r;
float t_i;
for ( int i = 0; i < CountData; i++)
x_r[i] = SoundData.Values[i];
// -------------
int Mode = 0; // ----- Прямое преобразование фурье ----
float S = -1; // ---- Прямое или обратное (-1 / 1) преобразование
//float R = 1; // ----
if ( Mode == 1 )
{
S = 1.0;
//R = 1.0 / (float)CountData;
}
CCollection<float> xFreqValues; xFreqValues.Clear();
CCollection<float> yFreqValues; yFreqValues.Clear();
// ------------- Индексы масивов , для которых будем считать ДПФ -----
///////////////
int i1 = (CountData) * Freq1 / WorkFreq;
int i2 = (CountData) * Freq2 / WorkFreq;
// -------------
Chart2->BottomAxis->SetMinMax(i1 / (float) CountData * WorkFreq, i2 / (float)CountData * WorkFreq);
float CountData_inv = 1.0 / (float)CountData;
float S_TWO_PI_CountData_inv = S*TWO_PI*CountData_inv;
float max = -121312;
int max_index = -1;
for (int k = i1; k < i2; k++ )
{
if ( isDTFStoped == true ) break;
s_i = 0;
s_r = 0;
for ( int n = 0; n < CountData; n++ )
{
float argument = S_TWO_PI_CountData_inv * k*n;
t_r = cos(argument);
t_i = sin(argument);
s_r = s_r + x_r[n]*t_r;// - a.i*b.i;
s_i = s_i + x_r[n]*t_i;// + a.r*b.i;
}
float x_val = k * CountData_inv * WorkFreq;
float y_val = sqrt(s_r*s_r + s_i*s_i);
y_val = y_val * 2.0 * CountData_inv;
if ( max < y_val ){
max = y_val;
max_index = k;
}
xFreqValues.Add(x_val);
yFreqValues.Add(y_val);
Chart2->Series[0]->AddXY(x_val, y_val);
Application->ProcessMessages();
}
float index1 = (max_index - 2 < 0 ) ? 0 : max_index - 2;
float index2 = (max_index + 2 > CountData - 1 ) ? CountData - 1 : max_index + 2;
float indexator_incroment = 1.0 / (float)DTF_InterpolationPointsCount;
for (float k = index1; k < index2; k = k + indexator_incroment )
{
if ( isDTFStoped == true ) break;
s_i = s_r = 0;
for ( int n = 0; n < CountData; n++ )
{
//float argument = k*n * S_TWO_PI_CountData_inv;
float argument = S_TWO_PI_CountData_inv * k*n;
t_r = cos(argument);
t_i = sin(argument);
s_r = s_r + x_r[n]*t_r;
s_i = s_i + x_r[n]*t_i;
}
float x_val = k * CountData_inv * WorkFreq;
float y_val = sqrt(s_r*s_r + s_i*s_i);
y_val = y_val * 2.0 * CountData_inv;
xFreqValues.Add(x_val);
yFreqValues.Add(y_val);
Chart2->Series[0]->AddXY(x_val, y_val);
Application->ProcessMessages();
}
free(x_r);
// -----------------------------------------
// -----------------------------------------
// ----- Расчет добротности ----------------
// -----------------------------------------
if ( isDTFStoped == true ){
AddStringToLog("DFT stoped");
} else {
TFastLineSeries *ls = (TFastLineSeries *)Chart2->Series[0];
float max = -1000;
float CenterFreq = 0;
int Index_of_MaxFreq = -1;
for ( int i = 0; i < ls->YValues->Count; i++)
if ( max < ls->YValues->Value[i] ) {
max = ls->YValues->Value[i];
CenterFreq = ls->XValues->Value[i];
Index_of_MaxFreq = i;
}
float freq1 = 0, freq2 = 0;
float val1, val2;
float px_1[2], py_1[2];
float px_2[2], py_2[2];
// ---- Поиск Левого бока ----
for ( int i = Index_of_MaxFreq; i > 1; i-- ) {
if ( ls->YValues->Value[i] <= 0.707*max)
{
float df = ls->XValues->Value[i+1] - ls->XValues->Value[i];
float ya = ls->YValues->Value[i ];
float yb = ls->YValues->Value[i+1];
val1 = 0.707*max;
freq1 = ls->XValues->Value[i] + df * (0.707*max - ya) / (yb - ya);
break;
}
}
// ---- Поиск Правой бока ----
for ( int i = Index_of_MaxFreq; i < ls->YValues->Count; i++ ) {
if ( ls->YValues->Value[i] <= 0.707*max)
{
float df = ls->XValues->Value[i ] - ls->XValues->Value[i-1];
float ya = ls->YValues->Value[i-1];
float yb = ls->YValues->Value[i ];
val2 = 0.707*max;
freq2 = ls->XValues->Value[i-1] + df * (0.707*max - ya) / (yb - ya);
break;
}
}
/*
Index_of_MaxFreq
*/
/*
for ( int i = 1; i < ls->YValues->Count; i++)
{
if ( ls->YValues->Value[i] >= 0.707*max && freq1 < 100)
{
float df = ls->XValues->Value[i] - ls->XValues->Value[i-1];
float ya = ls->YValues->Value[i-1];
float yb = ls->YValues->Value[i ];
val1 = 0.707*max;
freq1 = ls->XValues->Value[i-1] + df * (0.707*max - ya) / (yb - ya);
}
if ( ls->YValues->Value[i] <= 0.707*max && freq1 > 100 && freq2 < 100)
{
float df = ls->XValues->Value[i] - ls->XValues->Value[i-1];
float ya = ls->YValues->Value[i-1];
float yb = ls->YValues->Value[i ];
val2 = 0.707*max;
freq2 = ls->XValues->Value[i-1] + df * (0.707*max - ya) / (yb - ya);
}
}
*/
float q = CenterFreq / (freq2 - freq1);
AddStringToLog("F/dF = " + FloatToStrF(q, ffFixed, 20, 2));
e_Dobrotnost2->Text = FloatToStrF(q, ffFixed, 20, 2);
Chart2->Series[1]->AddXY(CenterFreq, max);
Chart2->Series[1]->AddXY(freq1, val1);
Chart2->Series[1]->AddXY(freq2, val2);
Chart2->Series[2]->AddXY(freq1 - 0.5*(freq2 - freq1), 0.707 * max);
Chart2->Series[2]->AddXY(freq2 + 0.5*(freq2 - freq1), 0.707 * max);
Chart2->LeftAxis->SetMinMax(0, max*1.12);
Chart2->BottomAxis->SetMinMax(freq1 - 2.0*(freq2 - freq1), freq2 + 2.0*(freq2 - freq1));
}
// -----------
button_StartDTFCalc->Enabled = true;
button_StopDTFCalc ->Enabled = false;
isDTFStoped = false;
}
//===========================================================================
void Tform_Main::GetMaximums( CCollectionStorage<float> *in, CCollectionStorage<float> *out_y, float freq1, float freq2)
{
if ( in == NULL ) return;
if ( in->Items == NULL ) return;
// ФОрмируем масив с реальных максимумов , ищем по производным
CCollection<float> x, y;
// -----------
float differ_old = in->Items[1]->Values[1] - in->Items[1]->Values[0]; // ---- Предыдущая производная -------
float differ_cur; // ---- Текущая производная -------
for ( unsigned int i = 2; i < in->Items[0]->ValuesCount; i++)
{
if ( in->Items[0]->Values[i-1] >= freq1 && in->Items[0]->Values[i-1] <= freq2 )
{
differ_cur = in->Items[1]->Values[i] - in->Items[1]->Values[i-1];
if ( differ_old > 0 && differ_cur < 0 )
{
y.Add(in->Items[1]->Values[i-1]);
x.Add(in->Items[0]->Values[i-1]);
}
differ_old = differ_cur;
}
}
// теперь с предыдущих максимумов ищу первых N_Maximums максимумов
int N_Maximums = FFT_MaxPointsCount;
out_y->Items[0]->Clear();
out_y->Items[1]->Clear();
CCollection<int> indexes;
float max = -1111;
int max_index = -1;
for ( unsigned int i = 0; i < x.ValuesCount; i++ )
{
// Прохожусь по запомненым индексам, откидываю повторения
bool is_index_found = false;
for ( unsigned int k = 0; k < indexes.ValuesCount; k++ )
if ( (int ) i == indexes.Values[k] ) is_index_found = true;
if ( is_index_found == true ) continue;
// фиксирую максимум
if ( max < y.Values[i] ) {
max_index = i;
max = y.Values[i];
}
// если дошел до конца масива, акамулирую данные
if ( (unsigned int)i >= x.ValuesCount-1 ){
out_y->Items[0]->Add(x.Values[max_index]);
out_y->Items[1]->Add(y.Values[max_index]);
indexes.Add(max_index);
i = 0;
max = -1111;
max_index = -1;
// если нашел больше четырех максимумов, валю от сюда )
if ( indexes.ValuesCount >= (unsigned int)N_Maximums ) break;
}
}
}
//===========================================================================
void __fastcall TfrmResult_3::BitBtn1Click( TObject *Sender )
{
CCollection<float> *si_x[3], *si_y[3];
//-----------
si_x[0] = ( cb_Chart1_x->ItemIndex == -1 ) ? NULL : ( CCollection<float> *)cb_Chart1_x->Items->Objects[cb_Chart1_x->ItemIndex]; // ---- частота -----
si_x[1] = ( cb_Chart2_x->ItemIndex == -1 ) ? NULL : ( CCollection<float> *)cb_Chart2_x->Items->Objects[cb_Chart2_x->ItemIndex]; // ---- частота -----
si_x[2] = ( cb_Chart3_x->ItemIndex == -1 ) ? NULL : ( CCollection<float> *)cb_Chart3_x->Items->Objects[cb_Chart3_x->ItemIndex]; // ---- частота -----
si_y[0] = ( cb_Chart1_y->ItemIndex == -1 ) ? NULL : ( CCollection<float> *)cb_Chart1_y->Items->Objects[cb_Chart1_y->ItemIndex]; // ---- Сигнал - Пучности ----
si_y[1] = ( cb_Chart2_y->ItemIndex == -1 ) ? NULL : ( CCollection<float> *)cb_Chart2_y->Items->Objects[cb_Chart2_y->ItemIndex]; // ---- Фаза возбуждения ----
si_y[2] = ( cb_Chart3_y->ItemIndex == -1 ) ? NULL : ( CCollection<float> *)cb_Chart3_y->Items->Objects[cb_Chart3_y->ItemIndex]; // ---- Фаза Узла ----
//-----------
double FreqMaximum = 0;
double Puchnost = 0;
double Dobrotnost = 0;
//double Napjazhenije_Uzla = 0;
double FazaPuchnosti = 0;
//-----------
Memo1->Clear();
int IndexMaximumFreq = -1;
int MaximumIndex2 = -1;
//-----------
Draw_ChartSeries(Chart1, 0, CheckBox1->Checked, true, 3000, 0, 0, si_x[0]->ValuesCount, si_x[0], si_y[0]);
Draw_ChartSeries(Chart2, 0, CheckBox1->Checked, true, 3000, 0, 0, si_x[1]->ValuesCount, si_x[1], si_y[1]);
Draw_ChartSeries(Chart3, 0, CheckBox1->Checked, true, 3000, 0, 0, si_x[2]->ValuesCount, si_x[2], si_y[2]);
//----------- Расчеты ------------
// ---------- Pасчет данных для определения добротности Резонатора (Ищу максимум на кривой и индекс данных) -----------
if ( si_x[0] != NULL && si_y[0] != NULL)
{
CCollection<float> NormValues;
float max = si_y[0]->Values[0];
// ---------
for ( unsigned int i = 1; i < si_y[0]->ValuesCount; i++, NormValues.Add(si_y[0]->Values[i]))
if ( max < si_y[0]->Values[i] ) {
max = si_y[0]->Values[i];
IndexMaximumFreq = i;
}
// --------- Нормирую значения -----------
for ( unsigned int i = 0; i < NormValues.ValuesCount; i++) NormValues.Values[i] = NormValues.Values[i] / max;
// --------- Ищу индексы на уровне 0.7 -----------
int i1 = -1, i2 = -1;
if ( IndexMaximumFreq >= 0)
{
int CurPosition = IndexMaximumFreq; while ( CurPosition-- >= 0) if ( NormValues.Values[CurPosition] < 0.7) { i1 = CurPosition; break; }
CurPosition = IndexMaximumFreq; while ( CurPosition++ < (int) NormValues.ValuesCount) if ( NormValues.Values[CurPosition] < 0.7) { i2 = CurPosition; break; }
}
float deltaF = (i1 >= 0 && i2 >= 0) ? fabs(si_x[0]->Values[i2] - si_x[0]->Values[i1]) : 0;
FreqMaximum = (IndexMaximumFreq == 0 ) ? 0 : si_x[0]->Values[IndexMaximumFreq];
Puchnost = (IndexMaximumFreq == 0 ) ? 0 : si_y[0]->Values[IndexMaximumFreq]*1000.0;
Dobrotnost = ( deltaF == 0 ) ? 0 : FreqMaximum / deltaF;
// ---------
Memo1->Lines->Add(""); Memo1->Lines->Add("Добротность = " + FloatToStrF(Dobrotnost, ffFixed, 20, 6));
Memo1->Lines->Add(""); Memo1->Lines->Add("Частота = " + FloatToStrF(FreqMaximum, ffFixed, 20, 6));
Memo1->Lines->Add(""); Memo1->Lines->Add("Ширина полосы = " + FloatToStrF(deltaF, ffFixed, 20, 6));
Memo1->Lines->Add("");
Memo1->Lines->Add(""); Memo1->Lines->Add(AnsiString(si_y[0]->Name)+ " = " + FloatToStrF(Puchnost, ffFixed, 20, 3));
}
//-----------
if ( si_x[1] != NULL && si_y[1] != NULL && IndexMaximumFreq != -1)
{
FazaPuchnosti = (IndexMaximumFreq == 0 ) ? 0 : si_y[1]->Values[IndexMaximumFreq]*1000.0;
Memo1->Lines->Add(AnsiString(si_y[1]->Name) + " = " + FloatToStrF(FazaPuchnosti, ffFixed, 20, 6));
Memo1->Lines->Add("");
}
//-----------
if ( si_x[2] != NULL && si_y[2] != NULL)
{
float max = si_y[2]->Values[0];
// ----------
for ( unsigned int i = 1; i < si_y[2]->ValuesCount; i++)
if ( max < si_y[2]->Values[i] ) {
max = si_y[2]->Values[i];
MaximumIndex2 = i;
}
if ( MaximumIndex2 != -1 )
{
//Napjazhenije_Uzla = si_y[2]->Values[MaximumIndex2]*1000.0;
Memo1->Lines->Add("");
//Memo1->Lines->Add(" " + AnsiString(si_y[2]->Name) + " = " + FloatToStrF(Napjazhenije_Uzla, ffFixed, 20, 3));
//Memo1->Lines->Add("");
Memo1->Lines->Add(" Разночастоность = " + FloatToStrF(fabs(si_x[2]->Values[MaximumIndex2] - FreqMaximum), ffFixed, 20, 6));
}
// ----------
}
// ----------
double DeltaFi = ( Puchnost == 0 ) ? 0 : atan2(FazaPuchnosti, Puchnost) * 0.5 * 180.0 / M_PI;
Memo1->Lines->Add(" Delta FI = " + FloatToStrF(DeltaFi, ffFixed, 20, 6));
// ----------
double val1 = Dobrotnost; // --------- Добротность ---------
double val2 = FreqMaximum; // ---- Частота ----
double val3 = Puchnost; // ---- Сигнал пучности ------
double val3_= DeltaFi;
double val4 = FazaPuchnosti; // ---- Фаза пучности----
Memo1->Lines->Add("");
Memo1->Lines->Add(FloatToStrF(val1, ffFixed, 20, 1) + " " +
FloatToStrF(val2, ffFixed, 20, 4) + " " +
FloatToStrF(val3, ffFixed, 20, 2) + " " +
FloatToStrF(val3_, ffFixed, 20, 3) + " " +
FloatToStrF(val4, ffFixed, 20, 3) + " ");
// ----------
}
