diff --git a/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasUtils.kt b/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasUtils.kt
index 525abb4..c646f5a 100644
--- a/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasUtils.kt
+++ b/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasUtils.kt
@@ -54,7 +54,9 @@ object GasUtils {
     private fun updateGasTypeDb(gasName: Byte, port: String, online: Boolean) {
         GlobalScope.launch {
             val typeDao = DBUtils.gasTypeDao()
-            typeDao.insert(GasType(gasName.toString(), port, online))
+            val gasType = typeDao.getByName(gasName.toString())
+            gasType?.online = online
+            typeDao.insert(gasType ?: GasType(gasName.toString(), port, online))
         }
     }
 
@@ -65,10 +67,11 @@ object GasUtils {
             mPortRunnable[index] = flagRunnable
         }
         mHandler.removeCallbacks(flagRunnable)
-        mPortFlags[index] = true
-        updateGasTypeDb(gasName, port, true)
         // 如果一段时间内没有收到消息，认为连接断开
         mHandler.postDelayed(flagRunnable, CHECK_TIME)
+
+        mPortFlags[index] = true
+        updateGasTypeDb(gasName, port, true)
     }
 
     // 监控串口状态
diff --git a/app/src/main/java/com/yinuo/safetywatcher/watcher/ui/adapter/SensorAdapter.kt b/app/src/main/java/com/yinuo/safetywatcher/watcher/ui/adapter/SensorAdapter.kt
index 8b98e10..ec9223d 100644
--- a/app/src/main/java/com/yinuo/safetywatcher/watcher/ui/adapter/SensorAdapter.kt
+++ b/app/src/main/java/com/yinuo/safetywatcher/watcher/ui/adapter/SensorAdapter.kt
@@ -34,7 +34,7 @@ class SensorAdapter :
                 context.startActivity(Intent(context, SensorSettingActivity::class.java))
             }
 
-            binding.sensorName.text = data.type
+            binding.sensorName.text = data.nickName ?: "$data.type传感器"
             val state = data.online
             binding.sensorStatus.text = context.getText(getShowStatus(state))
             binding.sensorStatus.setTextColor(context.getColor(getShowStatusColor(state)))
diff --git a/library-common/src/main/java/com/common/commonlib/db/dao/GasTypeDao.kt b/library-common/src/main/java/com/common/commonlib/db/dao/GasTypeDao.kt
index f5a0777..3b076df 100644
--- a/library-common/src/main/java/com/common/commonlib/db/dao/GasTypeDao.kt
+++ b/library-common/src/main/java/com/common/commonlib/db/dao/GasTypeDao.kt
@@ -12,6 +12,9 @@ interface GasTypeDao {
     @Query("SELECT * FROM gas_type")
     suspend fun getAll(): List<GasType>
 
+    @Query("SELECT * FROM gas_type WHERE gas_name IS :name")
+    suspend fun getByName(name:String): GasType?
+
     @Insert(onConflict = OnConflictStrategy.REPLACE)
     suspend fun insert(gas: GasType)
 
diff --git a/library-common/src/main/java/com/common/commonlib/db/entity/GasType.kt b/library-common/src/main/java/com/common/commonlib/db/entity/GasType.kt
index 14af498..b95d07a 100644
--- a/library-common/src/main/java/com/common/commonlib/db/entity/GasType.kt
+++ b/library-common/src/main/java/com/common/commonlib/db/entity/GasType.kt
@@ -6,7 +6,8 @@ import androidx.room.PrimaryKey
 
 @Entity(tableName = "gas_type")
 data class GasType(
-    @PrimaryKey @ColumnInfo(name = "gas_type") var type: String,
+    @PrimaryKey @ColumnInfo(name = "gas_name") var type: String,
     @ColumnInfo(name = "port_path") var port: String,
-    @ColumnInfo(name = "online_flag") var online: Boolean
+    @ColumnInfo(name = "online_flag") var online: Boolean,
+    @ColumnInfo(name = "nick_name") var nickName: String? = null,
 )