diff --git a/src/main/java/com/ruoyi/device/service/impl/BufferDeviceImpl.java b/src/main/java/com/ruoyi/device/service/impl/BufferDeviceImpl.java
index 668c39e..7ff04cb 100644
--- a/src/main/java/com/ruoyi/device/service/impl/BufferDeviceImpl.java
+++ b/src/main/java/com/ruoyi/device/service/impl/BufferDeviceImpl.java
@@ -156,6 +156,18 @@ public class BufferDeviceImpl implements IBufferDeviceService
         telemetryMap.get(DeviceTelemetry.Alternate_land_point_Latitude)
                 .ifPresent(telemetryValue -> dto.setBackupLatitude(telemetryValue.getValue()));
 
+        // 从 acc_time 获取运行时间，转换为天为单位
+        // acc_time 单位是秒，需要转换为天：秒 / (60 * 60 * 24)
+        telemetryMap.get(DeviceTelemetry.Acc_Time)
+                .ifPresent(telemetryValue -> {
+                    Integer seconds = telemetryValue.getValue();
+                    if (seconds != null) {
+                        // 将秒转换为天
+                        Integer days = seconds / (60 * 60 * 24);
+                        dto.setRunningDuration(days);
+                    }
+                });
+
         return dto;
     }