diff --git a/sec-beidou/src/main/java/com/imdroid/beidou/task/DeviceStatusChecker.java b/sec-beidou/src/main/java/com/imdroid/beidou/task/DeviceStatusChecker.java
index ba215da4..8f8762e8 100644
--- a/sec-beidou/src/main/java/com/imdroid/beidou/task/DeviceStatusChecker.java
+++ b/sec-beidou/src/main/java/com/imdroid/beidou/task/DeviceStatusChecker.java
@@ -46,7 +46,7 @@ public class DeviceStatusChecker {
     GnssDeviceMapper deviceMapper;
     static final DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
 
-    @Scheduled(cron = "0 18,59 * * * ?") // 每半时执行一次
+    @Scheduled(cron = "0 18,48 * * * ?") // 每半时执行一次
     public void checkDeviceState() throws ExecutionException, InterruptedException {
         List<GnssGroup> groupCfgs = groupMapper.selectList(null);
         HashMap<Integer,Integer> group_cycle_map=new HashMap<>();