diff --git a/applications/main.c b/applications/main.c
index 0b47a5a..6ddcf4e 100644
--- a/applications/main.c
+++ b/applications/main.c
@@ -174,7 +174,7 @@ void Preheat_Sensor (rt_uint32_t timeout_counter)
 void Work_Cnt_Timer_Callback (void *parameter)
 {
     work_duration++;
-    if (IS_H308_EndOfLife())  // 每天检测一下是否过期
+    if (IS_H308_EndOfLife() == 1)  // 每天检测一下是否过期
     {
         if (Flash_GetNum_Records (kRecordSensoEndOfLife) == 0)
         {
@@ -456,12 +456,15 @@ int main (void)
                         SysControl.last_status = SysControl.status;
                         SysControl.status = kSensorFailureEvent;
                         LOG_D ("传感器失效模式");
-
+#if (IOT_MODULE_SWITCH == 1)
+                        Nt26k_Send_Event (kNt26kDeviceFailureEvent);
+#endif
                         if (Flash_GetNum_Records (kRecordSensoEndOfLife) == 0)
                         {
                             Flash_Write_Record (kRecordSensoEndOfLife);
                         }
-                        LED_Y_END_OF_LIFE;
+                        // LED_Y_END_OF_LIFE;
+                        Send_Laser_Alarm_Event (kNormalDetectionEvents); 
                     }
                 }
             }
diff --git a/bsp/src/bsp_h308.c b/bsp/src/bsp_h308.c
index 74a7a74..bedccc4 100644
--- a/bsp/src/bsp_h308.c
+++ b/bsp/src/bsp_h308.c
@@ -229,8 +229,16 @@ uint8_t IS_H308_EndOfLife(void)
         {
             H308.end_of_life = 1;
         }
+        else
+        {
+            H308.end_of_life = 0;
+        }
     }
-    return H308.end_of_life;
+    else
+    {
+       H308.end_of_life = 0;
+    }
+     return H308.end_of_life;
 }
 
 void UART4_Init(void)