diff --git a/Ems.CollectService.Analysis/BufferAnalysis.cs b/Ems.CollectService.Analysis/BufferAnalysis.cs
index 9a4aa7b..e4a3b4a 100644
--- a/Ems.CollectService.Analysis/BufferAnalysis.cs
+++ b/Ems.CollectService.Analysis/BufferAnalysis.cs
@@ -7,6 +7,7 @@ using NetTaste;
 using NLog;
 using SqlSugar;
 using System;
+using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Data.SqlTypes;
 using System.Linq;
@@ -552,10 +553,13 @@ namespace Ems.CollectService.Analysis
                 {
                     if (recordDnbInstant.zxyg != appConfig.virtualValue)
                     {
-                        var info = SqlSugarHelper.Db.Insertable<RecordDnbInstant>(recordDnbInstant).ExecuteCommand();
-                        if (info > 0)
+                        if (FIlterDnbInstant(recordDnbInstant))
                         {
-                            logger.Info($"仪表：{recordDnbInstant.monitorId}数据保存成功");
+                            var info = SqlSugarHelper.Db.Insertable<RecordDnbInstant>(recordDnbInstant).ExecuteCommand();
+                            if (info > 0)
+                            {
+                                logger.Info($"仪表：{recordDnbInstant.monitorId}数据保存成功");
+                            }
                         }
                     }
                     else
@@ -583,7 +587,7 @@ namespace Ems.CollectService.Analysis
             }        
         }
 
-        private Dictionary<string, decimal> monitorInstant = new Dictionary<string, decimal>();
+        private ConcurrentDictionary<string, decimal> monitorInstant = new ConcurrentDictionary<string, decimal>();
         
         /// <summary>
         /// 过滤数据，与前一条相差超过4000不进行保存
@@ -608,14 +612,14 @@ namespace Ems.CollectService.Analysis
                     if (!monitorInstant.ContainsKey(dnbInstant.monitorId))
                     {
                         logger.Info($"本地未获取到{dnbInstant.monitorId};");
-                        monitorInstant.Add(dnbInstant.monitorId,(decimal)dnbInstant.zxyg);
+                        monitorInstant.TryAdd(dnbInstant.monitorId,(decimal)dnbInstant.zxyg);
                         logger.Info($"本地缓存{dnbInstant.monitorId};数据:{dnbInstant.zxyg}");
                         break;
                     }
 
                     logger.Info($"校验判断{dnbInstant.monitorId};");
                     var lastDnbInstant = monitorInstant[dnbInstant.monitorId];
-                    logger.Info($"本地缓存{dnbInstant.monitorId};前一条数据:{dnbInstant.zxyg}");
+                    logger.Info($"本地缓存{dnbInstant.monitorId};前一条数据:{lastDnbInstant}");
                     /*RecordDnbInstant lastDnbInstant = SqlSugarHelper.Db.Queryable<RecordDnbInstant>()
                         .OrderByDescending(x => x.collectTime)
                         .First(x => x.monitorId == dnbInstant.monitorId);
@@ -654,6 +658,12 @@ namespace Ems.CollectService.Analysis
 
                     monitorInstant[dnbInstant.monitorId] = (decimal)dnbInstant.zxyg;
                     logger.Info($"更新本地缓存{dnbInstant.monitorId};数据:{dnbInstant.zxyg}");
+
+                    if (zxygRes < 0)
+                    {
+                        logger.Info($"仪表：{dnbInstant.monitorId};与前一条数据相差:{zxygRes};小于0，不进行保存");
+                        result = false;
+                    }
                     
                     if (zxygRes >= appConfigDifferenceValue)
                     {
diff --git a/Ems.CollectService.Entity/BaseMonitorInfo.cs b/Ems.CollectService.Entity/BaseMonitorInfo.cs
index 21bd6fd..23aa4e6 100644
--- a/Ems.CollectService.Entity/BaseMonitorInfo.cs
+++ b/Ems.CollectService.Entity/BaseMonitorInfo.cs
@@ -60,21 +60,7 @@ namespace Ems.CollectService.Entity
         ///</summary>
          [SugarColumn(ColumnName="grade"    )]
          public int? Grade { get; set; }
-        /// <summary>
-        /// 建筑类型 
-        ///</summary>
-         [SugarColumn(ColumnName="build_id"    )]
-         public string BuildId { get; set; }
-        /// <summary>
-        /// 分项类型 
-        ///</summary>
-         [SugarColumn(ColumnName="subentry_id"    )]
-         public string SubentryId { get; set; }
-        /// <summary>
-        /// 业态类型 
-        ///</summary>
-         [SugarColumn(ColumnName="business_id"    )]
-         public string BusinessId { get; set; }
+        
         /// <summary>
         /// 传感器仪表 
         ///</summary>