diff --git a/constants/event.go b/constants/event.go
index 67bb63a..e3c3560 100644
--- a/constants/event.go
+++ b/constants/event.go
@@ -1,31 +1,50 @@
 // Package constants define constant variable
 package constants
 
-const (
-	// TIBreachTriggerType define out of bounds type constant
-	TIBreachTriggerType = "trigger"
-)
+// EvenvtType define event type
+type EvenvtType int
 
 const (
-	// TelemetryUpLimit define telemetry upper limit
-	TelemetryUpLimit = "up"
-	// TelemetryUpUpLimit define telemetry upper upper limit
-	TelemetryUpUpLimit = "upup"
-
-	// TelemetryDownLimit define telemetry  limit
-	TelemetryDownLimit = "down"
-	// TelemetryDownDownLimit define telemetry lower lower limit
-	TelemetryDownDownLimit = "downdown"
+	// EventGeneralHard define gereral hard event type
+	EventGeneralHard EvenvtType = iota
+	// EventGeneralPlatformSoft define gereral platform soft event type
+	EventGeneralPlatformSoft
+	// EventGeneralApplicationSoft define gereral application soft event type
+	EventGeneralApplicationSoft
+	// EventWarnHard define warn hard event type
+	EventWarnHard
+	// EventWarnPlatformSoft define warn platform soft event type
+	EventWarnPlatformSoft
+	// EventWarnApplicationSoft define warn application soft event type
+	EventWarnApplicationSoft
+	// EventCriticalHard define critical hard event type
+	EventCriticalHard
+	// EventCriticalPlatformSoft define critical platform soft event type
+	EventCriticalPlatformSoft
+	// EventCriticalApplicationSoft define critical application soft event type
+	EventCriticalApplicationSoft
 )
 
+// IsGeneral define fucn to check event type is general
+func IsGeneral(eventType EvenvtType) bool {
+	return eventType < 3
+}
+
+// IsWarning define fucn to check event type is warn
+func IsWarning(eventType EvenvtType) bool {
+	return eventType >= 3 && eventType <= 5
+}
+
+// IsCritical define fucn to check event type is critical
+func IsCritical(eventType EvenvtType) bool {
+	return eventType >= 6
+}
+
 const (
-	// TelesignalRaising define telesignal raising edge
-	TelesignalRaising = "raising"
-	// TelesignalFalling define telesignal falling edge
-	TelesignalFalling = "falling"
-)
-
-const (
-	//  MinBreachCount define min breach count of real time data
-	MinBreachCount = 10
+	// EventFromStation define event from station type
+	EventFromStation = "station"
+	// EventFromPlatform define event from platform type
+	EventFromPlatform = "platform"
+	// EventFromOthers define event from others type
+	EventFromOthers = "others"
 )
diff --git a/constants/telemetry_imit.go b/constants/telemetry_imit.go
new file mode 100644
index 0000000..67bb63a
--- /dev/null
+++ b/constants/telemetry_imit.go
@@ -0,0 +1,31 @@
+// Package constants define constant variable
+package constants
+
+const (
+	// TIBreachTriggerType define out of bounds type constant
+	TIBreachTriggerType = "trigger"
+)
+
+const (
+	// TelemetryUpLimit define telemetry upper limit
+	TelemetryUpLimit = "up"
+	// TelemetryUpUpLimit define telemetry upper upper limit
+	TelemetryUpUpLimit = "upup"
+
+	// TelemetryDownLimit define telemetry  limit
+	TelemetryDownLimit = "down"
+	// TelemetryDownDownLimit define telemetry lower lower limit
+	TelemetryDownDownLimit = "downdown"
+)
+
+const (
+	// TelesignalRaising define telesignal raising edge
+	TelesignalRaising = "raising"
+	// TelesignalFalling define telesignal falling edge
+	TelesignalFalling = "falling"
+)
+
+const (
+	//  MinBreachCount define min breach count of real time data
+	MinBreachCount = 10
+)