diff --git a/business/src/main/java/com/fizz/business/service/DeviceSnapshotService.java b/business/src/main/java/com/fizz/business/service/DeviceSnapshotService.java
index 9620030..b8e114c 100644
--- a/business/src/main/java/com/fizz/business/service/DeviceSnapshotService.java
+++ b/business/src/main/java/com/fizz/business/service/DeviceSnapshotService.java
@@ -88,7 +88,7 @@ public class DeviceSnapshotService {
             AppMeasureCoatMessage coat = (AppMeasureCoatMessage) latestMeasurements.get(AppMeasureCoatMessage.class);
             AppMeasureExitMessage exit = (AppMeasureExitMessage) latestMeasurements.get(AppMeasureExitMessage.class);
 
-            log.info("测量数据状态 - entry: {}, furnace: {}, coat: {}, exit: {}", 
+            log.info("测量数据状态 - entry: {}, furnace: {}, coat: {}, exit: {}",
                     entry != null ? "有数据" : "null",
                     furnace != null ? "有数据" : "null",
                     coat != null ? "有数据" : "null",
@@ -127,18 +127,18 @@ public class DeviceSnapshotService {
                         int result = deviceSnapshotMapper.insert(snapshot);
                         if (result > 0) {
                             savedCount++;
-                            log.debug("设备快照保存成功: deviceCode={}, createTime={}", 
+                            log.debug("设备快照保存成功: deviceCode={}, createTime={}",
                                     snapshot.getDeviceCode(), snapshot.getCreateTime());
                         } else {
                             log.warn("设备快照保存失败（insert返回0）: deviceCode={}", snapshot.getDeviceCode());
                         }
                     } catch (Exception e) {
-                        log.error("保存设备快照到数据库失败: deviceCode={}, error={}", 
+                        log.error("保存设备快照到数据库失败: deviceCode={}, error={}",
                                 snapshot.getDeviceCode(), e.getMessage(), e);
                     }
                 }
                 log.info("成功保存{}个设备数据快照到数据库", savedCount);
-                
+
                 // 推送所有设备的历史趋势数据
                 pushAllDevicesHistoryTrend();
 
@@ -758,7 +758,6 @@ public class DeviceSnapshotService {
             snapshot.setDeviceName(device.getDesc());
             snapshot.setSectionType(device.getSectionType().name());
             snapshot.setSourceType(device.getSourceType().name());
-            snapshot.setBasePosition(device.getBasePosition());
 
             List<String> paramFields = device.getParamFields();
             log.debug("设备[{}]参数字段列表: {}", device.name(), paramFields);
@@ -821,7 +820,7 @@ public class DeviceSnapshotService {
      */
     private void extractData(Object message, List<String> fields, ObjectNode dataNode) {
         if (message == null || fields == null || fields.isEmpty()) {
-            log.debug("extractData参数无效: message={}, fields={}", 
+            log.debug("extractData参数无效: message={}, fields={}",
                     message != null ? message.getClass().getSimpleName() : "null",
                     fields != null ? fields.size() : "null");
             return;
@@ -875,7 +874,7 @@ public class DeviceSnapshotService {
                     log.warn("获取字段[{}]值失败: {}", field, e.getMessage());
                 }
             }
-            log.debug("从[{}]提取了{}个字段，共{}个字段", 
+            log.debug("从[{}]提取了{}个字段，共{}个字段",
                     message.getClass().getSimpleName(), extractedCount, fields.size());
         } catch (Exception e) {
             log.error("提取数据时发生错误: {}", e.getMessage(), e);