diff --git a/experiment_data/sample_data/new_2025_06_27_17_03_15.xlsx b/experiment_data/sample_data/new_2025_06_27_17_03_15.xlsx
new file mode 100644
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diff --git a/experiment_data/sample_data/new_2025_06_27_17_05_03.xlsx b/experiment_data/sample_data/new_2025_06_27_17_05_03.xlsx
new file mode 100644
index 0000000..089756f
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diff --git a/src/DSCAnalysisTool.pro b/src/DSCAnalysisTool.pro
index 27dd395..3fb11e3 100644
--- a/src/DSCAnalysisTool.pro
+++ b/src/DSCAnalysisTool.pro
@@ -9,7 +9,7 @@ CONFIG+=precompile_header
 PRECOMPILED_HEADER=stable.h
 
 #
-VERSION = 1.1.0
+VERSION = 1.2.0
 # 设置目标文件名，包含版本号
 TARGET = DSCAnalysisTool_$${VERSION}
 
diff --git a/src/data/lowesssmoother.h b/src/data/lowesssmoother.h
index 853a0b6..34e24cb 100644
--- a/src/data/lowesssmoother.h
+++ b/src/data/lowesssmoother.h
@@ -6,6 +6,7 @@
 #include <cmath>
 #include <stdexcept>
 
+// lowess
 namespace Lowess {
 
 // 配置参数结构体
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index eaec0c6..9f2d06f 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -101,6 +101,11 @@ void MainWindow::slotOITAutoAnalysis(const double x1,const double x2)
     _centralWidget->setVerticalLineRange(x1,x2);
 }
 
+void MainWindow::slotStartExperiment()
+{
+    startExperiment();
+}
+
 void MainWindow::closeEvent(QCloseEvent *event)
 {
     // 弹出确认对话框
@@ -140,6 +145,10 @@ void MainWindow::connections()
 
     connect(SerialPort::instance(), &SerialPort::sigSaveExperimentalDataMsgBox,
             this,&MainWindow::slotSaveExperimentalDataMsgBox);
+
+    connect(SerialPort::instance(), &SerialPort::sigStartExperiment,
+            this,&MainWindow::slotStartExperiment);
+
 #endif
 
     // mode
@@ -428,6 +437,22 @@ void MainWindow::smoothnessExperimentData(const int level)
 
 }
 
+void MainWindow::startExperiment()
+{
+    QByteArray ba = DataParser::setDeviceStartStop(DeviceStartMode::Start);
+
+    QString hexData = ba.toHex(' ');
+    qDebug() << "on_actionStart_triggered info (hex):" << hexData;
+
+    SerialPort::instance()->slotSendData(ba);
+
+    Global::_mode = Global::Mode::Experiment;
+
+    _manuallyStopTheExperimentFlag = false;
+
+    _centralWidget->startExperiment();
+}
+
 void MainWindow::on_actionStop_triggered()
 {
     logde<<" Stop experiment ...";
@@ -470,18 +495,7 @@ void MainWindow::on_actionStart_triggered()
 
     on_actionClearAllData_triggered();
 
-    QByteArray ba = DataParser::setDeviceStartStop(DeviceStartMode::Start);
-
-    QString hexData = ba.toHex(' '); // ' ' 作为分隔符，可选参数
-    qDebug() << "on_actionStart_triggered info (hex):" << hexData;
-
-    SerialPort::instance()->slotSendData(ba);
-
-    Global::_mode = Global::Mode::Experiment;
-
-    _manuallyStopTheExperimentFlag = false;
-
-    _centralWidget->startExperiment();
+startExperiment();
 }
 
 void MainWindow::on_actionReadOnly_triggered()
diff --git a/src/mainwindow.h b/src/mainwindow.h
index e3d7ab7..a8a40e5 100644
--- a/src/mainwindow.h
+++ b/src/mainwindow.h
@@ -42,6 +42,7 @@ public slots:
 
     void slotOITAutoAnalysis(const double,const double);
 
+    void slotStartExperiment();
 protected:
     void closeEvent(QCloseEvent *event) override;
 private slots:
@@ -128,7 +129,7 @@ private:
     QVector<Global::ExperimentData> smoothnessDetail(const int level,const QVector<Global::ExperimentData>&);
     void smoothnessExperimentData(const int level);
 
-
+    void startExperiment();
 private:
     bool _manuallyStopTheExperimentFlag;
     Ui::MainWindow *ui;
diff --git a/src/serialport/serialport.cpp b/src/serialport/serialport.cpp
index 8d1e356..66040b7 100644
--- a/src/serialport/serialport.cpp
+++ b/src/serialport/serialport.cpp
@@ -131,7 +131,7 @@ void SerialPort::slotReadData()
     }
     else if (READ_CMD == spp->cmd)
     {
-        DataParser::experimentalStateSwitching(cd);
+        //        DataParser::experimentalStateSwitching(cd);
         updateStatus(cd);
 
         if (spp->addr == 0)
@@ -156,9 +156,29 @@ void SerialPort::updateStatus(const CommonData &cd)
     logde<<"software mode:"<<Global::_mode;
 #endif
 
+    // Switch the software mode accord to the serial port data.
+    switch(cd.run_type){
+    case DeviceRunStatus::Heat:
+    case DeviceRunStatus::ConstantTemp:
+        if(Global::_mode != Global::Mode::Experiment){
+            Global::_mode = Global::Mode::Experiment;
+        }
+        break;
+    case DeviceRunStatus::Idle:
+    case DeviceRunStatus::Cooling:
+        if(Global::_mode != Global::Mode::Analysis){
+            Global::_mode = Global::Mode::Analysis;
+        }
+        break;
+    default:break;
+    }
+
     // If phase update, add new phase data to the global param.
     if(Global::_mode == Global::Mode::Experiment){
         if(Global::_currentPhase != (int)cd.current_phase){
+
+            logde<<"mode experiment,phase not equeal.";
+
             Global::_currentPhase = (int)cd.current_phase;
 
             Global::CurveExperimentData ced;
@@ -217,6 +237,9 @@ void SerialPort::updateStatus(const CommonData &cd)
         if(preMode == Global::Mode::Experiment
                 && Global::_mode == Global::Mode::Analysis){
             sendSaveSignalFlag = true;
+        }else if(preMode == Global::Mode::Analysis
+                 && Global::_mode == Global::Mode::Experiment){
+            emit sigStartExperiment();
         }
 
         preMode = Global::_mode;
@@ -339,7 +362,7 @@ bool SerialPort::openSp()
 
         if ((pid == conPid) && (vid == conVid))
         {
-              _sp->setPort(info);
+            _sp->setPort(info);
             break;
         }
     }
diff --git a/src/serialport/serialport.h b/src/serialport/serialport.h
index aa02476..2797c66 100644
--- a/src/serialport/serialport.h
+++ b/src/serialport/serialport.h
@@ -37,6 +37,7 @@ signals:
     void sigAxisModify(const float temp);
     void sigUpdateStatusbarMsg(const QString &);
     void sigSaveExperimentalDataMsgBox();
+    void sigStartExperiment();
 public slots:
     void slotDeliverData(const QByteArray &);
     void slotSendData(const QByteArray &);
diff --git a/src/ui/centralwidget.cpp b/src/ui/centralwidget.cpp
index b960bf7..b5d9afc 100644
--- a/src/ui/centralwidget.cpp
+++ b/src/ui/centralwidget.cpp
@@ -299,7 +299,7 @@ void CentralWidget::slotRecvCommonData(const CommonData &cd)
 {
     // Record data.
     if(!Global::_currentCurveExperimentDataPtr){
-        loger<<"_currentCurveExperimentDataPtr is nullptr.";
+        loger<<"_currentCurveExperimentDataPtr is nullptr.Soft exit.";
         exit(0);
     }else{
         Global::ExperimentData ed;