diff --git a/handler/device.go b/handler/device.go
index 06dccb6..b49911b 100644
--- a/handler/device.go
+++ b/handler/device.go
@@ -243,7 +243,7 @@ func subscribeAndHandleMessagesV2(ws *websocket.Conn, device_id int) {
 	defer pubsub.Close()
 	defer ws.Close()
 	ch := pubsub.Channel()
-	var ticker *time.Ticker
+	var ticker *time.Ticker // 定时器, 用于发送心跳包, 防止连接断开,每秒发送一次
 	for {
 		select {
 		case msg, _ := <-ch:
@@ -288,7 +288,7 @@ func subscribeAndHandleMessagesV2(ws *websocket.Conn, device_id int) {
 end:
 	// 查看是否还有其他连接，没有则设置 is_play 为 0
 	if worker.IsContainKey(online_conn_key) == false {
-		worker.SetRedisWithExpire(strconv.Itoa(device_id)+"_is_play", "0", time.Minute*5)
+		worker.SetRedisWithExpire(strconv.Itoa(device_id)+"_is_play", "1", time.Minute*5)
 		fmt.Println("device_id:", device_id, " has set is_play to 0")
 	}