diff --git a/component/common.go b/component/common.go
index 2d3c9fc..2626ad6 100644
--- a/component/common.go
+++ b/component/common.go
@@ -5,6 +5,7 @@ import (
 	"joylink.club/rtsssimulation/component/component_data"
 	"joylink.club/rtsssimulation/component/component_proto"
 	"joylink.club/rtsssimulation/consts"
+	"joylink.club/rtsssimulation/repository/model/proto"
 )
 
 var (
@@ -65,3 +66,4 @@ type Counter struct {
 var CounterType = ecs.NewComponentType[Counter]()
 
 var LinkPositionType = ecs.NewComponentType[component_proto.LinkPosition]()
+var KmType = ecs.NewComponentType[proto.Kilometer]()
diff --git a/entity/balise.go b/entity/balise.go
index 6cc61dc..e10e4ac 100644
--- a/entity/balise.go
+++ b/entity/balise.go
@@ -14,13 +14,6 @@ func LoadBalises(w ecs.World) error {
 	balises := data.Repo.TransponderList()
 	for _, b := range balises {
 		be := newBaliseEntity(w, b, data)
-		//应答器位置
-		be.AddComponent(component.LinkPositionType)
-		component.LinkPositionType.SetValue(be, component_proto.LinkPosition{
-			LinkId: b.LinkPosition().Link().Id(),
-			Offset: b.LinkPosition().Offset(),
-		})
-		//应答器类型
 		switch b.TransponderType() {
 		case proto.Transponder_FB:
 			be.AddComponent(component.BaliseFB)
@@ -40,9 +33,14 @@ func newBaliseEntity(w ecs.World, td *repository.Transponder, worldData *compone
 	uid := td.Id()
 	entry, ok := worldData.EntityMap[uid]
 	if !ok {
-		entry = w.Entry(w.Create(component.UidType, component.BaliseStateType))
+		entry = w.Entry(w.Create(component.UidType, component.BaliseStateType, component.LinkPositionType, component.KmType))
 		component.UidType.SetValue(entry, component.Uid{Id: uid})
 		component.BaliseStateType.Set(entry, &component.BaliseState{})
+		component.LinkPositionType.SetValue(entry, component_proto.LinkPosition{
+			LinkId: td.LinkPosition().Link().Id(),
+			Offset: td.LinkPosition().Offset(),
+		})
+		component.KmType.Set(entry, td.Km())
 		worldData.EntityMap[uid] = entry
 	}
 	return entry
diff --git a/repository/calculate.go b/repository/calculate.go
index c577c30..98ebea3 100644
--- a/repository/calculate.go
+++ b/repository/calculate.go
@@ -4,8 +4,8 @@ import (
 	"joylink.club/rtsssimulation/repository/model/proto"
 )
 
-// 转换公里标
-func convertKilometer(repo *Repository, km *proto.Kilometer, cs string) (*proto.Kilometer, error) {
+// ConvertKilometer 转换公里标
+func ConvertKilometer(repo *Repository, km *proto.Kilometer, cs string) (*proto.Kilometer, error) {
 	if km.CoordinateSystem == cs {
 		return km, nil
 	}
diff --git a/repository/link.go b/repository/link.go
index 0d4953b..988d1ad 100644
--- a/repository/link.go
+++ b/repository/link.go
@@ -70,6 +70,14 @@ func (l *Link) PhysicalSections() []*PhysicalSection {
 	return l.physicalSections
 }
 
+func (l *Link) AKm() *proto.Kilometer {
+	return l.aKm
+}
+
+func (l *Link) BKm() *proto.Kilometer {
+	return l.bKm
+}
+
 func (l *Link) bindTurnoutPort(port proto.Port, turnoutPort *TurnoutPort) {
 	switch port {
 	case proto.Port_A:
diff --git a/repository/repository_manager.go b/repository/repository_manager.go
index dabd686..437b3ef 100644
--- a/repository/repository_manager.go
+++ b/repository/repository_manager.go
@@ -265,7 +265,7 @@ func completeTurnoutPortKm(repo *Repository) error {
 			if tpKm == nil {
 				dp := turnout.findDevicePortByPort(port)
 				otherTurnout := repo.turnoutMap[dp.Device().Id()]
-				otherKm, err := convertKilometer(repo, otherTurnout.km, turnout.km.CoordinateSystem)
+				otherKm, err := ConvertKilometer(repo, otherTurnout.km, turnout.km.CoordinateSystem)
 				if err != nil {
 					return err
 				}
@@ -613,7 +613,7 @@ func buildLinks(repo *Repository) error {
 			link.bindKm(endKm, proto.Port_B)
 		}
 		//计算Link长度
-		convertedKm, err := convertKilometer(repo, endKm, linkZeroKm.CoordinateSystem)
+		convertedKm, err := ConvertKilometer(repo, endKm, linkZeroKm.CoordinateSystem)
 		if err != nil {
 			return err
 		}
@@ -688,8 +688,8 @@ func findEndTurnoutPortOrEndKm(repo *Repository, link *Link, startTp *TurnoutPor
 // 关联正常（非道岔）物理区段与Link
 func relatePhysicalSectionAndLink(repo *Repository, section *PhysicalSection, link *Link, baseKm *proto.Kilometer) {
 	link.bindPhysicalSections(section)
-	aKm, _ := convertKilometer(repo, section.aKm, baseKm.CoordinateSystem)
-	bKm, _ := convertKilometer(repo, section.bKm, baseKm.CoordinateSystem)
+	aKm, _ := ConvertKilometer(repo, section.aKm, baseKm.CoordinateSystem)
+	bKm, _ := ConvertKilometer(repo, section.bKm, baseKm.CoordinateSystem)
 	aOffset := number.Abs(aKm.Value - baseKm.Value)
 	bOffset := number.Abs(bKm.Value - baseKm.Value)
 	section.aLinkPosition = &LinkPosition{
@@ -734,7 +734,7 @@ func relateDevicesAndLink(repo *Repository, link *Link, startKm *proto.Kilometer
 		if km == nil || km.CoordinateSystem == "" {
 			continue
 		}
-		convertedKm, err := convertKilometer(repo, km, startKm.CoordinateSystem)
+		convertedKm, err := ConvertKilometer(repo, km, startKm.CoordinateSystem)
 		if err != nil {
 			return err
 		}
@@ -761,7 +761,7 @@ func interrelateLinkAndTurnout(repo *Repository, linkZeroKm *proto.Kilometer, tp
 	tp.turnout.bindLinkPort(tp.port, linkPort)
 	linkPort.link.bindTurnoutPort(linkPort.port, tp)
 	tpKm := tp.turnout.findBoundaryKmByPort(tp.port)
-	tpKm, _ = convertKilometer(repo, tpKm, linkZeroKm.CoordinateSystem)
+	tpKm, _ = ConvertKilometer(repo, tpKm, linkZeroKm.CoordinateSystem)
 	offset := number.Abs(tpKm.Value - linkZeroKm.Value)
 	tp.turnout.bindLinkPosition(tp.port, &LinkPosition{
 		link:   linkPort.link,
@@ -820,7 +820,7 @@ func slopeRelateLink(repo *Repository) error {
 func calculateLinkSegment(repo *Repository, startKm *proto.Kilometer,
 	endKm *proto.Kilometer) (*LinkPosition, *LinkPosition, error) {
 
-	endKm, err := convertKilometer(repo, endKm, startKm.CoordinateSystem)
+	endKm, err := ConvertKilometer(repo, endKm, startKm.CoordinateSystem)
 	if err != nil {
 		return nil, nil, err
 	}
diff --git a/repository/transponder.go b/repository/transponder.go
index 3c7941f..e660b6a 100644
--- a/repository/transponder.go
+++ b/repository/transponder.go
@@ -34,3 +34,7 @@ func (t *Transponder) bindLinkPosition(position *LinkPosition) {
 func (t *Transponder) LinkPosition() *LinkPosition {
 	return t.linkPosition
 }
+
+func (t *Transponder) Km() *proto.Kilometer {
+	return t.km
+}
diff --git a/util/number/number.go b/util/number/number.go
index e4f9e10..d2d80a4 100644
--- a/util/number/number.go
+++ b/util/number/number.go
@@ -1,7 +1,5 @@
 package number
 
-import "math"
-
 type Number interface {
 	~int | ~int8 | ~int16 | ~int32 | int64 |
 		~uint | ~uint8 | ~uint16 | ~uint32 | ~uint64 | ~uintptr |
@@ -31,6 +29,8 @@ func Max[T Number](a T, b T) T {
 }
 
 func Abs[T Number](num T) T {
-	abs := math.Abs(float64(num))
-	return T(abs)
+	if num < 0 {
+		return -num
+	}
+	return num
 }