diff --git a/protos/device_state.proto b/protos/device_state.proto
index 63f7820..0ce8ea2 100644
--- a/protos/device_state.proto
+++ b/protos/device_state.proto
@@ -84,22 +84,20 @@ message SignalState{
 message Signal {
   //信号机显示枚举
   enum Aspect {
-    //无用值
-    Non = 0;
-    //物理灭灯
-    OFF = 1;
+    //灭灯
+    OFF = 0;
+    //红
+    H = 1;
     //绿灯亮
     L = 2;
-    //红
-    H = 3;
     //黄
-    U = 4;
+    U = 3;
     //红黄
-    HU = 5;
+    HU = 4;
     //白
-    B = 6;
+    B = 5;
     //蓝
-    A = 7;
+    A = 6;
   }
 }
 
@@ -580,4 +578,34 @@ message SimulationStatus {
   SimulationState state = 2;
 
   string description = 3;
-}
\ No newline at end of file
+}
+
+// 仿真在用的第三方接口状态列表
+message SimulationThirdPartyApiService {
+  enum Type {
+    // 未定义
+    Undefined = 0;
+    // 与动力学接口服务
+    Dynamics = 1;
+    // 与半实物列车接口服务
+    SemiPhysicalTrain = 2;
+  }
+  // 服务状态
+  enum State {
+    // 服务正常
+    Normal = 0;
+    // 服务异常
+    Error = 1;
+  }
+
+  // 服务列表
+  repeated SimulationThirdPartyApiServiceState states = 1;
+}
+
+// 仿真第三方接口状态
+message SimulationThirdPartyApiServiceState {
+  // 接口服务类型
+  SimulationThirdPartyApiService.Type type = 1;
+  // 服务状态
+  SimulationThirdPartyApiService.State state = 2;
+}