diff --git a/Firmware/Core/apps/Inc/key.h b/Firmware/Core/apps/Inc/key.h
index 12604cd..48fa7ee 100644
--- a/Firmware/Core/apps/Inc/key.h
+++ b/Firmware/Core/apps/Inc/key.h
@@ -12,5 +12,6 @@
 
 #include "main.h"
 
-void CheckButtonEvents();
+uint16_t getSensor_Count();
+void setSensor_Count(uint16_t count);
 #endif //APPS_CORE_APPS_INC_KEY_H_
diff --git a/Firmware/Core/apps/src/key.c b/Firmware/Core/apps/src/key.c
index 075cb1f..4038790 100644
--- a/Firmware/Core/apps/src/key.c
+++ b/Firmware/Core/apps/src/key.c
@@ -1,5 +1,6 @@
 #include "key.h"
 
+uint16_t sensor_Count = 0;
 void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin) {
   if (GPIO_Pin == KEY1_Pin) {
 	if (HAL_GPIO_ReadPin(KEY1_GPIO_Port, KEY1_Pin) == GPIO_PIN_SET) {
@@ -19,5 +20,17 @@ void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin) {
 	  keyVal = 3;
 	}
   }
+  //光耦测速模块
+  if(GPIO_Pin == SENOR_Pin){
+	if(HAL_GPIO_ReadPin(SENOR_GPIO_Port,SENOR_Pin) == GPIO_PIN_SET){
+	  sensor_Count++;
+	}
+  }
+}
+uint16_t getSensor_Count(){
+  return sensor_Count;
+}
+void setSensor_Count(uint16_t count){
+  sensor_Count = count;
 }