diff --git a/ruoyi-admin/src/main/java/com/ruoyi/web/controller/timedTask/SensorStateConroller.java b/ruoyi-admin/src/main/java/com/ruoyi/web/controller/timedTask/SensorStateConroller.java
index 5ceb500..9a89418 100644
--- a/ruoyi-admin/src/main/java/com/ruoyi/web/controller/timedTask/SensorStateConroller.java
+++ b/ruoyi-admin/src/main/java/com/ruoyi/web/controller/timedTask/SensorStateConroller.java
@@ -19,6 +19,7 @@ import java.text.SimpleDateFormat;
 import java.util.Calendar;
 import java.util.Date;
 import java.util.List;
+import java.util.concurrent.TimeUnit;
 
 /**
  * 传感器状态统计
@@ -52,7 +53,10 @@ public class SensorStateConroller extends BaseController {
                     Date collectTime = dateFormat.parse(param);
                     Date nowTime = new Date();
                     long diff = nowTime.getTime() - collectTime.getTime();
-                    long diffMinutes = diff / (60 * 1000) % 60;
+
+                    long diffMinutes = TimeUnit.MILLISECONDS.toMinutes(diff);
+
+                    //long diffMinutes = diff / (60 * 1000) % 60;
 
                     long sensorState = 0L;