diff --git a/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasCache.kt b/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasCache.kt
index 2bffe25..1942c46 100644
--- a/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasCache.kt
+++ b/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasCache.kt
@@ -10,7 +10,7 @@ import kotlinx.coroutines.launch
 @OptIn(DelicateCoroutinesApi::class)
 object GasCache {
     private val statusCache = HashMap<String, String>()
-    private val nicknameCache = HashMap<String, String>()
+    private val nicknameCache = HashMap<String, String?>()
 
     init {
         GlobalScope.launch(Dispatchers.IO) {
@@ -18,21 +18,21 @@ object GasCache {
             val all = typeDao.getAll()
             val context = CommonApplication.getContext()
             all.forEach {
-                setNickname(it.type, it.nickName ?: "")
+                setNickname(it.type, it.nickName ?: "${it.type}传感器")
                 setStatus(it.type, getShowStatus(context, it.status))
             }
         }
     }
 
     fun getNickname(gas: String): String {
-        return nicknameCache[gas] ?: ""
+        return nicknameCache[gas] ?: "${gas}传感器"
     }
 
     fun getStatus(gas: String): String {
         return statusCache[gas] ?: ""
     }
 
-    fun setNickname(gas: String, nickname: String) {
+    fun setNickname(gas: String, nickname: String?) {
         nicknameCache[gas] = nickname
     }