diff --git a/protos/device_state.proto b/protos/device_state.proto
index 40fd86c..3b0438e 100644
--- a/protos/device_state.proto
+++ b/protos/device_state.proto
@@ -887,7 +887,11 @@ message TrainControlState{
   repeated DriverKeySwitch driverKey = 2; //驾驶端激活
   DirectionKeySwitch dirKey = 3; //接车运行方向
   PushHandler pushHandler = 4; //牵引制动手柄
-
+  ControlButton buttons = 5;
+  message ControlButton{
+    uint32 id = 1;
+    bool passed = 3;
+  }
   message EmergentButton{
     uint32  id = 1;
     bool passed = 3;