diff --git a/taskbusplatform/watchdog/tbwatchdog.cpp b/taskbusplatform/watchdog/tbwatchdog.cpp
index 3000f9e410c64b2f1ea8249b871b4f1f14645b7c..e20d73f351ca8d1ff9e61def7dc0b1e9525ff328 100644
--- a/taskbusplatform/watchdog/tbwatchdog.cpp
+++ b/taskbusplatform/watchdog/tbwatchdog.cpp
@@ -2,6 +2,7 @@
 #include <QDebug>
 #include <QTimerEvent>
 #include <QVector>
+#include <QSharedPointer>
 static bool g_tb_break = false;
 #ifdef WIN32
 #include <windows.h>
@@ -31,7 +32,7 @@ void my_handler(int s){
 }
 #endif
 
-static tbWatchDog g_tb_watch_dog_;
+QSharedPointer<tbWatchDog> g_tb_watch_dog_;
 
 tbWatchDog::tbWatchDog(QObject *parent)
 	:QObject(parent)
@@ -116,6 +117,8 @@ QVector<TASKBUS::tagMemoryInfo> tbWatchDog::get_info()
 
 tbWatchDog & tb_watch_dog()
 {
-	return g_tb_watch_dog_;
+	if (!g_tb_watch_dog_)
+		g_tb_watch_dog_ = QSharedPointer<tbWatchDog>( new tbWatchDog());
+	return *g_tb_watch_dog_;
 }