diff --git a/app/src/main/cpp/GPIOControl.cpp b/app/src/main/cpp/GPIOControl.cpp
index e156be1f..35efa7d4 100644
--- a/app/src/main/cpp/GPIOControl.cpp
+++ b/app/src/main/cpp/GPIOControl.cpp
@@ -23,10 +23,7 @@
 #define IOT_PARAM_READ 0xAF
 
 std::mutex GpioControl::m_locker;
-CSemaphore GpioControl::m_semaphore;
 std::vector<GpioControl::ITEM> GpioControl::m_items;
-std::thread GpioControl::m_thread;
-bool GpioControl::m_exitSignal = false;
 bool GpioControl::m_cameraPowerStatus = false;
 
 size_t GpioControl::turnOnImpl(const IOT_PARAM& param)
@@ -56,7 +53,7 @@ size_t GpioControl::turnOnImpl(const IOT_PARAM& param)
     if (it == m_items.end())
     {
         oldRef = 0;
-        ITEM item = {param.cmd, references, 0, 0, now};
+        ITEM item = {param.cmd, references, now};
         m_items.push_back(item);
         SetCamerastatus(param.cmd, true);
     }
@@ -231,14 +228,15 @@ size_t GpioControl::TurnOffImmediately(int cmd)
     {
         if (it->cmd == cmd)
         {
-            ref = it->references;
-            it->closeCmds++;
-            it->closeTime = ts;
+            if (it->references > 0)
+            {
+                it->references = 0;
+                setInt(it->cmd, 0);
+            }
             break;
         }
     }
     m_locker.unlock();
-    m_semaphore.release();
 #ifdef _DEBUG
     ALOGI("PWR TurnOffNow cmd=%d ref=%u", cmd, (uint32_t)ref);
 #endif
@@ -254,22 +252,34 @@ size_t GpioControl::TurnOff(int cmd, uint32_t delayedCloseTime/* = 0*/)
     }
     size_t ref = 0;
     std::vector<ITEM>::iterator it;
+
+    if (delayedCloseTime > 0)
+    {
+        std::shared_ptr<PowerControl> powerCtrl = std::make_shared<PowerControl>(cmd);
+        std::thread th([delayedCloseTime, powerCtrl]() mutable {
+            std::this_thread::sleep_for(std::chrono::seconds(delayedCloseTime));
+            powerCtrl.reset();
+        });
+        th.detach();
+    }
+
     m_locker.lock();
     for (it = m_items.begin(); it != m_items.end(); ++it)
     {
         if (it->cmd == cmd)
         {
-            ref = it->references;
-            it->closeCmds++;
-            if (ts > it->closeTime)
+            if (it->references > 0)
             {
-                it->closeTime = ts;
+                it->references--;
+                if (it->references == 0)
+                {
+                    setInt(it->cmd, 0);
+                }
             }
             break;
         }
     }
     m_locker.unlock();
-    m_semaphore.release();
 #ifdef _DEBUG
     ALOGI("PWR TurnOff cmd=%d ref=%u", cmd, (uint32_t)ref);
 #endif
@@ -285,6 +295,17 @@ size_t GpioControl::TurnOff(const std::vector<int>& cmds, uint32_t delayedCloseT
     }
     std::vector<ITEM>::iterator it;
     std::vector<int>::const_reverse_iterator itCmd;
+
+    if (delayedCloseTime > 0)
+    {
+        std::shared_ptr<PowerControl> powerCtrl = std::make_shared<PowerControl>(cmds);
+        std::thread th([delayedCloseTime, powerCtrl]() mutable {
+            std::this_thread::sleep_for(std::chrono::seconds(delayedCloseTime));
+            powerCtrl.reset();
+        });
+        th.detach();
+    }
+
     m_locker.lock();
     // turnOnImpl(param);
     for (itCmd = cmds.crbegin(); itCmd != cmds.crend(); ++itCmd)
@@ -293,25 +314,39 @@ size_t GpioControl::TurnOff(const std::vector<int>& cmds, uint32_t delayedCloseT
         {
             if (it->cmd == *itCmd)
             {
-                it->closeCmds++;
-                if (ts > it->closeTime)
+                if (it->references > 0)
                 {
-                    it->closeTime = ts;
+                    it->references--;
+                    if (it->references == 0)
+                    {
+                        setInt(it->cmd, 0);
+                    }
                 }
                 break;
             }
         }
     }
     m_locker.unlock();
-    m_semaphore.release();
 
     return 0;
 }
 
 size_t GpioControl::TurnOff(const std::vector<std::pair<int, uint32_t> >& cmds)
 {
-    time_t ts = time(NULL);
-    time_t ts2;
+    for (auto itCmd = cmds.cbegin(); itCmd != cmds.end(); ++itCmd)
+    {
+        if (itCmd->second > 0)
+        {
+            uint32_t delayedCloseTime = itCmd->second;
+            std::shared_ptr<PowerControl> powerCtrl = std::make_shared<PowerControl>(itCmd->first);
+            std::thread th([delayedCloseTime, powerCtrl]() mutable {
+                std::this_thread::sleep_for(std::chrono::seconds(delayedCloseTime));
+                powerCtrl.reset();
+            });
+            th.detach();
+        }
+    }
+
     std::vector<ITEM>::iterator it;
     std::vector<std::pair<int, uint32_t> >::const_iterator itCmd;
     m_locker.lock();
@@ -321,14 +356,12 @@ size_t GpioControl::TurnOff(const std::vector<std::pair<int, uint32_t> >& cmds)
         {
             if (it->cmd == itCmd->first)
             {
-
-                it->closeCmds++;
-                if (itCmd->second != 0)
+                if (it->references > 0)
                 {
-                    ts2 = itCmd->second + ts;
-                    if (ts2 > it->closeTime)
+                    it->references--;
+                    if (it->references == 0)
                     {
-                        it->closeTime = ts2;
+                        setInt(it->cmd, 0);
                     }
                 }
                 break;
@@ -336,7 +369,6 @@ size_t GpioControl::TurnOff(const std::vector<std::pair<int, uint32_t> >& cmds)
         }
     }
     m_locker.unlock();
-    m_semaphore.release();
 
     return 0;
 }
@@ -373,7 +405,7 @@ bool GpioControl::GetSelftestStatus(time_t wait_time)
     std::vector<ITEM>::iterator it;
     for (it = m_items.begin(); it != m_items.end(); ++it)
     {
-        if (it->cmd == cmd && it->openTime!=0 && (now - it->openTime >= wait_time))
+        if (it->cmd == cmd && it->references > 0 && it->openTime!=0 && (now - it->openTime >= wait_time))
         {
             return true;//自检完成
         }
@@ -395,128 +427,13 @@ time_t GpioControl::GetSelfTestRemain(time_t wait_time)
     std::vector<ITEM>::iterator it;
     for (it = m_items.begin(); it != m_items.end(); ++it)
     {
-        if (it->cmd == cmd && it->openTime!=0 && (now - it->openTime <= wait_time))
+        if (it->cmd == cmd && it->references > 0)
         {
-            time_t remaintime =wait_time - (now - it->openTime);
+            time_t remaintime = (now - it->openTime);
+            remaintime = (wait_time > remaintime) ? (wait_time - remaintime) : 0;
             return remaintime;//自检完成
         }
     }
     return 0;
 }
 
-void GpioControl::PowerControlThreadProc()
-{
-    time_t ts = 0;
-    std::vector<ITEM>::iterator it;
-    std::vector<int> items;
-    time_t minDelayTime = 0;
-    time_t delayTime = 0;
-    int fd = -1;
-    int res = -1;
-    m_cameraPowerStatus = 0;
-
-    while(1)
-    {
-        // Check if there is close cmd
-        ts = time(NULL);
-
-        minDelayTime = std::numeric_limits<time_t>::max();
-
-        m_locker.lock();
-        for (it = m_items.begin(); it != m_items.end(); ++it)
-        {
-            if (it->references == 0 && it->closeCmds == 0 && it->closeTime == 0)
-            {
-#ifdef _DEBUG
-                ALOGI("PWR THREAD cmd=%d ref=%u closeCmds=%u", it->cmd, (uint32_t)it->references, (uint32_t)it->closeCmds);
-#endif
-                continue;
-            }
-
-            if (it->closeCmds > 0)
-            {
-                if (it->references <= it->closeCmds)
-                {
-                    it->references = 0;
-                }
-                else
-                {
-                    it->references -= it->closeCmds;
-                    if(it->references < 0)
-                        it->references = 0;
-                }
-                it->closeCmds = 0;
-            }
-
-            if (it->references == 0)
-            {
-                // Should turn off the power
-                if ((it->closeTime == 0) || (it->closeTime <= ts))
-                {
-                    // close it directly
-                    setInt(it->cmd, 0);
-                    it->closeTime = 0;
-                    it->openTime = 0;
-#ifdef _DEBUG
-                    ALOGI("PWR THREAD DO TurnOff cmd=%d", it->cmd);
-#endif
-                    SetCamerastatus(it->cmd, false);
-                }
-                else
-                {
-                    // Check Time
-                    delayTime = ts - it->closeTime;
-                    if (delayTime < minDelayTime)
-                    {
-                        minDelayTime = delayTime;
-                    }
-                }
-            }
-#ifdef _DEBUG
-            ALOGI("PWR THREAD cmd=%d ref=%u closeCmds=%u", it->cmd, (uint32_t)it->references, (uint32_t)it->closeCmds);
-#endif
-        }
-        m_locker.unlock();
-
-        if (minDelayTime < std::numeric_limits<time_t>::max())
-        {
-            m_semaphore.try_acquire_for(std::chrono::seconds(1));
-        }
-        else
-        {
-            m_semaphore.acquire();
-        }
-
-        if (m_exitSignal)
-        {
-            break;
-        }
-    }
-}
-
-bool GpioControl::Startup()
-{
-    if (m_thread.joinable())
-    {
-        return true;
-    }
-    // if (m_thread.)
-    m_exitSignal = false;
-    m_thread = std::thread(PowerControlThreadProc);
-#ifdef _DEBUG
-    pthread_t nativeHandle = m_thread.native_handle();
-    pthread_setname_np(nativeHandle, "gpioclose");
-#endif
-    return true;
-}
-
-void GpioControl::Stop()
-{
-    // Notify
-    m_exitSignal = true;
-    m_semaphore.release();
-    m_thread.detach();
-}
-
-
-
diff --git a/app/src/main/cpp/GPIOControl.h b/app/src/main/cpp/GPIOControl.h
index 8059395f..841281a8 100644
--- a/app/src/main/cpp/GPIOControl.h
+++ b/app/src/main/cpp/GPIOControl.h
@@ -160,17 +160,12 @@ public:
     {
         int cmd;
         size_t references;
-        size_t closeCmds;
-        time_t closeTime;
         time_t openTime;
     };
 
 private:
     static std::mutex                   m_locker;
-    static CSemaphore                   m_semaphore;
     static std::vector<ITEM>            m_items;
-    static bool                         m_exitSignal;
-    static std::thread                  m_thread;
     static bool                         m_cameraPowerStatus;
 
 protected:
@@ -191,11 +186,6 @@ public:
     static bool GetSelftestStatus(time_t wait_time);
     static time_t GetSelfTestRemain(time_t wait_time);
 
-    static void PowerControlThreadProc();
-
-    static bool Startup();
-    static void Stop();
-
 public:
     static void setInt(int cmd, int value);
     static int getInt(int cmd);
@@ -445,6 +435,12 @@ public:
         m_cmds.resize(1, cmd1);
         TurnOn();
     }
+    PowerControl(const std::vector<int>& cmds) : m_delayCloseTime(0)
+    {
+        m_cmds = cmds;
+        TurnOn();
+    }
+
     PowerControl(int cmd1, uint32_t closeDelayTime) : m_delayCloseTime(closeDelayTime)
     {
         m_cmds.resize(1, cmd1);
@@ -521,7 +517,7 @@ public:
         GpioControl::TurnOff(m_cmds, m_delayCloseTime);
 #ifdef OUTPUT_DBG_INFO
         std::string status = GetStatus();
-        XYLOG(XYLOG_SEVERITY_INFO, "PWR After TurnOff %s", status.c_str());
+        XYLOG(XYLOG_SEVERITY_INFO, "PWR After TurnOff %s, DelayCloseTime=%u", status.c_str(), m_delayCloseTime);
 #endif
     }
 
diff --git a/app/src/main/cpp/PhoneDevice.cpp b/app/src/main/cpp/PhoneDevice.cpp
index 1a36b3df..fa5e9555 100644
--- a/app/src/main/cpp/PhoneDevice.cpp
+++ b/app/src/main/cpp/PhoneDevice.cpp
@@ -509,8 +509,6 @@ CPhoneDevice::CPhoneDevice(JavaVM* vm, jobject service, const std::string& appPa
 
     RegisterHandlerForSignal(SIGUSR2);
 
-    GpioControl::Startup();
-
     LoadNetworkInfo();
 
     m_vm = vm;
@@ -605,8 +603,6 @@ CPhoneDevice::~CPhoneDevice()
         delete m_network;
         m_network = NULL;
     }
-
-    GpioControl::Stop();
 }
 
 void CPhoneDevice::SetListener(IListener* listener)