diff --git a/repository/repository.go b/repository/repository.go
index fec6674..f758aa7 100644
--- a/repository/repository.go
+++ b/repository/repository.go
@@ -236,7 +236,9 @@ func (repo *Repository) FindModel(deviceId string, deviceType proto.DeviceType)
 func (repo *Repository) FindLink(id string) *Link {
 	return repo.linkMap[id]
 }
-
+func (repo *Repository) FindTransponder(id string) *Transponder {
+	return repo.responderMap[id]
+}
 func (repo *Repository) FindTurnout(id string) *Turnout {
 	return repo.turnoutMap[id]
 }
diff --git a/sys/bind.go b/sys/bind.go
index d0b2505..e88a83e 100644
--- a/sys/bind.go
+++ b/sys/bind.go
@@ -37,5 +37,7 @@ func BindSystem(w ecs.World) {
 		//物理区段
 		device_sys.NewFaDcAxleDeviceSystem(),
 		device_sys.NewSectionDetectSystem(),
+		//应答器
+		device_sys.NewBaliseSystem(),
 	)
 }
diff --git a/sys/device_sys/balise.go b/sys/device_sys/balise.go
new file mode 100644
index 0000000..eee787d
--- /dev/null
+++ b/sys/device_sys/balise.go
@@ -0,0 +1,41 @@
+package device_sys
+
+import (
+	"joylink.club/ecs"
+	"joylink.club/ecs/filter"
+	"joylink.club/rtsssimulation/component"
+	"joylink.club/rtsssimulation/entity"
+)
+
+type BaliseSystem struct {
+	baliseQuery *ecs.Query
+}
+
+func NewBaliseSystem() *BaliseSystem {
+	return &BaliseSystem{baliseQuery: ecs.NewQuery(filter.Contains(component.UidType, component.BaliseStateType))}
+}
+func (s *BaliseSystem) Update(w ecs.World) {
+	s.baliseQuery.Each(w, func(entry *ecs.Entry) {
+		baliseState := component.BaliseStateType.Get(entry)
+		baliseState.ValidTelegram = s.findValidTelegram(w, entry)
+	})
+}
+
+// 获取应答器有效报文
+func (s *BaliseSystem) findValidTelegram(w ecs.World, entry *ecs.Entry) []byte {
+	wd := entity.GetWorldData(w)
+	id := component.UidType.Get(entry).Id
+	if entry.HasComponent(component.BaliseFB) {
+		baliseModel := wd.Repo.FindTransponder(id)
+		return baliseModel.FixedTelegram()
+	} else if entry.HasComponent(component.BaliseDB) {
+
+	} else if entry.HasComponent(component.BaliseIB) {
+
+	} else if entry.HasComponent(component.BaliseVB) {
+
+	} else if entry.HasComponent(component.BaliseWB) {
+
+	}
+	return nil
+}