diff --git a/src/components/CoordinateXYWidget.cpp b/src/components/CoordinateXYWidget.cpp
index 8e190cd..1cb5921 100644
--- a/src/components/CoordinateXYWidget.cpp
+++ b/src/components/CoordinateXYWidget.cpp
@@ -210,6 +210,7 @@ void CoordinateXYWidget::stopFlash()
 void CoordinateXYWidget::quit()
 {
     disconnect(mTimer,&QTimer::timeout,this, &CoordinateXYWidget::updateFlash);
+    disconnect(mTimer,&QTimer::timeout,this, &CoordinateXYWidget::updateStopFlash);
     mTimer->stop();
     hide();
 }
diff --git a/src/components/CoordinateZWidget.cpp b/src/components/CoordinateZWidget.cpp
index 745ac85..bb0852e 100644
--- a/src/components/CoordinateZWidget.cpp
+++ b/src/components/CoordinateZWidget.cpp
@@ -175,6 +175,7 @@ void CoordinateZWidget::updateStopFlash()
 void CoordinateZWidget::quit()
 {
     disconnect(mTimer,&QTimer::timeout,this, &CoordinateZWidget::updateFlash);
+    disconnect(mTimer,&QTimer::timeout,this, &CoordinateZWidget::updateStopFlash);
     mTimer->stop();
     hide();
 }
diff --git a/src/device/DeviceManager.cpp b/src/device/DeviceManager.cpp
index 872fa5e..d8d3295 100644
--- a/src/device/DeviceManager.cpp
+++ b/src/device/DeviceManager.cpp
@@ -1316,6 +1316,7 @@ bool DeviceManager::startAutoLocate()
         if(jsonObj["code"].toInt() == 0 )
         {
             emit startAutoLocateResult(true);
+            mEffectivePositionCount = 0;
             mGetAutoLocatePositionTimer = startTimer(1000);
             //LOG_SYS_OPERATION("Start auto locate succeed.")
             return true;