diff --git a/CapMachine.Wpf/CanDrive/ToomossCan.cs b/CapMachine.Wpf/CanDrive/ToomossCan.cs
index e34cdd4..bf74fbf 100644
--- a/CapMachine.Wpf/CanDrive/ToomossCan.cs
+++ b/CapMachine.Wpf/CanDrive/ToomossCan.cs
@@ -26,6 +26,7 @@ namespace CapMachine.Wpf.CanDrive
     {
         private readonly IContainerProvider ContainerProvider;
         private readonly object _dbcParserLock = new object();
+        private const int DbcStringBufferCapacity = 256;
 
         /// <summary>
         /// 实例化函数
@@ -354,11 +355,11 @@ namespace CapMachine.Wpf.CanDrive
                 int DBCMsgNum = CAN_DBCParser.DBC_GetMsgQuantity(DBCHandle);
                 for (int i = 0; i < DBCMsgNum; i++)
                 {
-                    StringBuilder MsgName = new StringBuilder(32);
+                    StringBuilder MsgName = new StringBuilder(DbcStringBufferCapacity);
                     CAN_DBCParser.DBC_GetMsgName(DBCHandle, i, MsgName);
                     //Console.WriteLine("Msg.Name = {0}", MsgName);
                     int DBCSigNum = CAN_DBCParser.DBC_GetMsgSignalQuantity(DBCHandle, MsgName);
-                    StringBuilder Publisher = new StringBuilder(32);
+                    StringBuilder Publisher = new StringBuilder(DbcStringBufferCapacity);
                     CAN_DBCParser.DBC_GetMsgPublisher(DBCHandle, MsgName, Publisher);
                     long MsgId;
                     MsgId = CAN_DBCParser.DBC_GetMsgIDByName(DBCHandle, MsgName);
@@ -366,7 +367,7 @@ namespace CapMachine.Wpf.CanDrive
                     //Console.Write("Signals:");
                     for (int j = 0; j < DBCSigNum; j++)
                     {
-                        StringBuilder SigName = new StringBuilder(32);
+                        StringBuilder SigName = new StringBuilder(DbcStringBufferCapacity);
                         CAN_DBCParser.DBC_GetMsgSignalName(DBCHandle, MsgName, j, SigName);
                         //Console.Write("{0} ", SigName);
 
@@ -628,15 +629,16 @@ namespace CapMachine.Wpf.CanDrive
                                     //将CAN消息数据填充到信号里面，用DBC解析数据
                                     CAN_DBCParser.DBC_SyncCANMsgToValue(DBCHandle, msgPtRead, CanNum);
 
+                                    double[] valueDouble = new double[1];
                                     //循环获取消息的数据
                                     foreach (var item in ListCanDbcModel)
                                     {
                                         //有配置的名称的，认为是有用的，则需要读取数据
                                         //if (!string.IsNullOrEmpty(item.Name))
                                         //{
-                                        var valueSb = new StringBuilder(64);
-                                        CAN_DBCParser.DBC_GetSignalValueStr(DBCHandle, new StringBuilder(item.MsgName), new StringBuilder(item.SignalName), valueSb);
-                                        item.SignalRtValueSb = valueSb;
+                                        valueDouble[0] = 0;
+                                        CAN_DBCParser.DBC_GetSignalValue(DBCHandle, new StringBuilder(item.MsgName), new StringBuilder(item.SignalName), valueDouble);
+                                        item.SignalRtValue = valueDouble[0].ToString();
                                         //}
                                     }
                                 }