diff --git a/PhaseDevice.cpp b/PhaseDevice.cpp
index c90552a..f8cda87 100644
--- a/PhaseDevice.cpp
+++ b/PhaseDevice.cpp
@@ -43,7 +43,7 @@
         serialUtil->openSerialPort(SettingConfig::getInstance().PORT_NAME, SettingConfig::getInstance().BAUD_RATE);
         serialUtil->sendData(startCmd.toLocal8Bit());
 
-        return !serialUtil->isOpen();
+        return serialUtil->isOpen();
     case 1:
         clientUtil = new UDPClientUtil(this);
         connect(clientUtil, &UDPClientUtil::dataRecieved, this, &PhaseDevice::dataReceivedHandler);

diff --git a/PhaseDevice.cpp b/PhaseDevice.cpp
index c90552a..f8cda87 100644
--- a/PhaseDevice.cpp
+++ b/PhaseDevice.cpp
@@ -43,7 +43,7 @@
         serialUtil->openSerialPort(SettingConfig::getInstance().PORT_NAME, SettingConfig::getInstance().BAUD_RATE);
         serialUtil->sendData(startCmd.toLocal8Bit());
 
-        return !serialUtil->isOpen();
+        return serialUtil->isOpen();
     case 1:
         clientUtil = new UDPClientUtil(this);
         connect(clientUtil, &UDPClientUtil::dataRecieved, this, &PhaseDevice::dataReceivedHandler);
diff --git a/common/utils/QSerialPortUtil.cpp b/common/utils/QSerialPortUtil.cpp
index a641d86..3509461 100644
--- a/common/utils/QSerialPortUtil.cpp
+++ b/common/utils/QSerialPortUtil.cpp
@@ -22,17 +22,17 @@
     open = serial.open(QIODevice::ReadWrite);
     qDebug() << portName << baudRate << open;
 
-//    if (open == true)
-//    {
+    if (open == true)
+    {
         // 绑定信号与槽
         connect(&serial, &QSerialPort::readyRead, this, &QSerialPortUtil::readData);
 
 //        // mock data received per second
-        QTimer * timer = new QTimer(this);
-        lastValue = new int[16] {0};
-        connect(timer, &QTimer::timeout, this, &QSerialPortUtil::mockReceivData);
-        timer->start(1000);
-//    }
+//        QTimer * timer = new QTimer(this);
+//        lastValue = new int[16] {0};
+//        connect(timer, &QTimer::timeout, this, &QSerialPortUtil::mockReceivData);
+//        timer->start(1000);
+    }
 }
 
 void QSerialPortUtil::sendData(QByteArray data)