diff --git a/main.c b/main.c
index 32706fe..6524253 100644
--- a/main.c
+++ b/main.c
@@ -55,6 +55,19 @@ bool isStopBroadcastBegin=false;
 bool isOtaEnable=false;
 jt_only_tag_t onlyTags[200]={0};
 int tagCount=0;
+
+// 心跳检测相关
+#define HEARTBEAT_TIMEOUT_SEC (30 * 60)  // 30分钟超时
+#define MAX_LIGHTBAR_NUM 200
+typedef struct {
+    uint32_t tagCode;           // 灯条ID
+    time_t lastHeartbeat;       // 最后心跳时间
+    bool isOnline;              // 是否在线
+} lightbar_heartbeat_t;
+lightbar_heartbeat_t lightbarHeartbeat[MAX_LIGHTBAR_NUM] = {0};
+int lightbarHeartbeatCount = 0;
+pthread_mutex_t heartbeatMutex = PTHREAD_MUTEX_INITIALIZER;
+pthread_t pt_heartbeat_check;
 int lightbars_size=0;
 int lightbars_count=0;
 uint8_t changecolor=0;
@@ -116,6 +129,72 @@ int mqtt_port=1883;
 void hmacsha1_hex(char *key, char* data, char *signhex, int signhex_len);
 void *thread_mqtt_status_check(void *arg);
 void *thread_station_heartbeat(void *arg);
+void *thread_heartbeat_check(void *arg);
+void update_lightbar_heartbeat(uint32_t tagCode);
+
+/*================================================================================*/
+// 更新灯条心跳时间
+void update_lightbar_heartbeat(uint32_t tagCode) {
+    pthread_mutex_lock(&heartbeatMutex);
+    
+    // 查找是否已存在该灯条
+    int found = -1;
+    for (int i = 0; i < lightbarHeartbeatCount; i++) {
+        if (lightbarHeartbeat[i].tagCode == tagCode) {
+            found = i;
+            break;
+        }
+    }
+    
+    time_t now = time(NULL);
+    
+    if (found >= 0) {
+        // 更新已存在灯条的心跳时间
+        lightbarHeartbeat[found].lastHeartbeat = now;
+        if (!lightbarHeartbeat[found].isOnline) {
+            lightbarHeartbeat[found].isOnline = true;
+            LOG_I("Lightbar %08X back online\n", tagCode);
+        }
+    } else if (lightbarHeartbeatCount < MAX_LIGHTBAR_NUM) {
+        // 添加新灯条
+        lightbarHeartbeat[lightbarHeartbeatCount].tagCode = tagCode;
+        lightbarHeartbeat[lightbarHeartbeatCount].lastHeartbeat = now;
+        lightbarHeartbeat[lightbarHeartbeatCount].isOnline = true;
+        lightbarHeartbeatCount++;
+        LOG_I("New lightbar %08X registered, total: %d\n", tagCode, lightbarHeartbeatCount);
+    }
+    
+    pthread_mutex_unlock(&heartbeatMutex);
+}
+
+// 心跳检测线程 - 每分钟检查一次
+void *thread_heartbeat_check(void *arg) {
+    LOG_I("Heartbeat check thread started\n");
+    
+    while (1) {
+        sleep(60);  // 每60秒检查一次
+        
+        time_t now = time(NULL);
+        
+        pthread_mutex_lock(&heartbeatMutex);
+        
+        for (int i = 0; i < lightbarHeartbeatCount; i++) {
+            if (lightbarHeartbeat[i].isOnline) {
+                time_t elapsed = now - lightbarHeartbeat[i].lastHeartbeat;
+                if (elapsed > HEARTBEAT_TIMEOUT_SEC) {
+                    lightbarHeartbeat[i].isOnline = false;
+                    LOG_I("!!! Lightbar %06X OFFLINE - no heartbeat for %ld seconds (>%d sec)\n", 
+                          lightbarHeartbeat[i].tagCode, (long)elapsed, HEARTBEAT_TIMEOUT_SEC);
+                }
+            }
+        }
+        
+        pthread_mutex_unlock(&heartbeatMutex);
+    }
+    
+    return NULL;
+}
+
 /*================================================================================*/
 void doCommand_help(int argc, char *argv[])
 {
@@ -1421,11 +1500,12 @@ void *thread_uart_recv_back(void *arg){
     while(1){
        uart_data_receive_data_back(&uartRecvBack,&parmAck,&tagCodeHead,&tagCode,&tagSignal,&totalLen,&tagFeature,
                                    &count,&batteryV,&version,&ledCtrl,&signCode,&reserve,&lableParm);
-       LOG_I("recv_back:%04x,%04x,tag:%08x,%02x,%02x,%02x,%02x,battery:%02x,%04x,%02x,%04x,reserve:%04x,%08x\n",
-             parmAck,tagCodeHead,tagCode,tagSignal,totalLen,tagFeature,count,batteryV,version,ledCtrl,signCode,reserve,lableParm);
+       //LOG_I("recv_back:%04x,%04x,tag:%08x,%02x,%02x,%02x,%02x,battery:%02x,%04x,%02x,%04x,reserve:%04x,%08x\n",
+             //parmAck,tagCodeHead,tagCode,tagSignal,totalLen,tagFeature,count,batteryV,version,ledCtrl,signCode,reserve,lableParm);
        PutDataIntoQueue(tagCode,batteryV,reserve);
        if(tagFeature==0xFF){
-           LOG_I("heart beat\n");
+           //LOG_I("heart beat from lightbar %06X\n", tagCode);
+           update_lightbar_heartbeat(tagCode);
        }else if(tagFeature==0xFD){
            LOG_I("key\n");
        }else if(tagFeature==0xFC){
@@ -1620,13 +1700,13 @@ void *thread_station_heartbeat(void *arg){
         json_object_object_add(root, "eStationInfor", estation_info);
 
         const char *json_string = json_object_to_json_string(root);
-        LOG_I("station_heartbeat:%s\n", json_string);
+        //LOG_I("station_heartbeat:%s\n", json_string);
 
         // 发送心跳到 /estation/{ID}/heartbeat topic
         char topic[128] = {0};
         snprintf(topic, sizeof(topic), "/estation/%s/heartbeat", stationsn);
         // 这里需要使用MQTT发送函数，暂时用LOG输出
-        LOG_I("Sending heartbeat to topic: %s\n", topic);
+        //LOG_I("Sending heartbeat to topic: %s\n", topic);
 
         json_object_put(root);
     }
@@ -2153,6 +2233,14 @@ int main(int argc, char *argv[])
        LOG_I("pthread_create station_heartbeat success\n");
        pthread_detach(pt_station_heartbeat);
     }
+
+    ret = pthread_create(&pt_heartbeat_check,NULL,thread_heartbeat_check,NULL);
+    if(ret!=0){
+       LOG_I("pthread_create heartbeat_check fail\n");
+    }else{
+       LOG_I("pthread_create heartbeat_check success\n");
+       pthread_detach(pt_heartbeat_check);
+    }
 #if 0
     readresult=file_to_buffer("mqttRawPassword",&len);
     if(readresult!=NULL){