diff --git a/sec-beidou-fwd/src/main/java/com/imdroid/beidou_fwd/task/Forwarder.java b/sec-beidou-fwd/src/main/java/com/imdroid/beidou_fwd/task/Forwarder.java
index 0bdf6591..10986743 100644
--- a/sec-beidou-fwd/src/main/java/com/imdroid/beidou_fwd/task/Forwarder.java
+++ b/sec-beidou-fwd/src/main/java/com/imdroid/beidou_fwd/task/Forwarder.java
@@ -254,8 +254,19 @@ public class Forwarder {
     }
 
     void checkOfflineDevice(String offDeviceId, String refDeviceId1, String refDeviceId2){
-        GnssStatus offDevice = gnssStatusMapper.getByDeviceId(offDeviceId);
-        if(offDevice == null) return;
+        LocalDateTime now = LocalDateTime.now();
+        QueryWrapper<GnssCalcData> queryWrapper = new QueryWrapper<>();
+        queryWrapper.eq("deviceid",offDeviceId);
+        queryWrapper.eq("enabled",true);
+        queryWrapper.isNotNull("rpose");
+        queryWrapper.ne("pps",-1);
+        queryWrapper.ge("createtime",now.minusMinutes(30).format(formatter));
+        queryWrapper.last("limit 1");
+
+        GnssCalcData offDevice = gnssDataMapper.selectOne(queryWrapper);
+        if(offDevice != null) {
+            return;
+        }
 
         GnssStatus refDevice1 = gnssStatusMapper.getByDeviceId(refDeviceId1);
         if(refDevice1 == null || refDevice1.getState() == GnssStatus.STATE_OFFLINE) return;
@@ -263,15 +274,14 @@ public class Forwarder {
         if(refDevice2 == null || refDevice2.getState() == GnssStatus.STATE_OFFLINE) return;
 
         // 插入数据
-        LocalDateTime now = LocalDateTime.now();
         int day = now.getDayOfYear();
-        insertData(offDevice, ((day%4)>1)?refDevice1:refDevice2);
+        insertData(offDeviceId, ((day%4)>1)?refDeviceId1:refDeviceId2);
     }
 
-    void insertData(GnssStatus offDevice,GnssStatus refDevice){
-        logger.info("insertData based on {}",refDevice.getDeviceid());
+    void insertData(String offDeviceId,String refDeviceId){
+        logger.info("insertData based on {}",refDeviceId);
         QueryWrapper<GnssCalcData> queryWrapper = new QueryWrapper<>();
-        queryWrapper.eq("deviceid",refDevice.getDeviceid());
+        queryWrapper.eq("deviceid",refDeviceId);
         queryWrapper.eq("enabled",true);
         queryWrapper.isNotNull("rpose");
         queryWrapper.orderByDesc("createtime");
@@ -287,7 +297,7 @@ public class Forwarder {
             if(Math.abs(deltaD)>2) deltaD = Math.random()*0.4 - 0.2;
 
             QueryWrapper<GnssCalcData> queryWrapper2 = new QueryWrapper<>();
-            queryWrapper2.eq("deviceid",offDevice.getDeviceid());
+            queryWrapper2.eq("deviceid",offDeviceId);
             queryWrapper2.eq("enabled",true);
             queryWrapper2.isNotNull("rpose");
             queryWrapper2.orderByDesc("createtime");
@@ -295,7 +305,7 @@ public class Forwarder {
             GnssCalcData offGnssCalcData = gnssDataMapper.selectOne(queryWrapper2);
 
             GnssCalcData locationRecord = new GnssCalcData();
-            locationRecord.setDeviceid(offDevice.getDeviceid());
+            locationRecord.setDeviceid(offDeviceId);
             locationRecord.setTenantid(tenantId);
             locationRecord.setEnabled(true);
             locationRecord.setCreatetime(LocalDateTime.now());