diff --git a/protos/request.proto b/protos/request.proto
index a68e3cc..4e57ec5 100644
--- a/protos/request.proto
+++ b/protos/request.proto
@@ -66,6 +66,7 @@ message Section {
 message Psd {
   enum Operation {
     Undefined = 0;
+    //屏蔽门控制
     Km4 = 1; //四编组开门
     CancelKm4 = 2; //取消四编组开门
     Km8 = 3; //八编组开门
@@ -76,11 +77,16 @@ message Psd {
     ForceKm8 = 8; //强制八编组开门
     ForceGm = 9; //强制关门
     CancelForce = 10; //取消强制
-
+    //屏蔽门故障
     AsdCannotOpen = 11; //滑动门无法开门
     CancelAsdCannotOpen = 12; //取消滑动门无法开门
     AsdCannotClose = 13; //滑动门无法关闭
     CancelAsdCannotClose = 14; //取消滑动门无法关闭
+    //间隙探测
+    QDTC = 15; //启动探测
+    CancelQDTC = 16; //取消启动探测
+    TZTC = 17; //停止探测
+    CancelTZTC = 18; //取消停止探测
   }
 }