diff --git a/applications/PLC_link.c b/applications/PLC_link.c
index 9395e72..5c9f1a1 100644
--- a/applications/PLC_link.c
+++ b/applications/PLC_link.c
@@ -27,8 +27,9 @@ static const mb_backend_param_t mb_bkd_prm = {
     .rtu.lvl = 0            //控制发送电平
 };
 
-extern unsigned int sys_temperature;
-extern unsigned int sys_humidity;
+extern rt_int32_t sys_temperature;
+extern rt_int32_t sys_humidity;
+extern unsigned char sys_time[6];
 
 static void mb_plc_read_regs(mb_inst_t *hinst)
 {
@@ -40,8 +41,12 @@ static void mb_plc_read_regs(mb_inst_t *hinst)
 
     u16 regs[64];
 
-    regs[0]=sys_temperature;
-    regs[1]=sys_humidity;
+    regs[0]=sys_temperature;//系统温度
+    regs[1]=sys_humidity;//系统湿度
+    for(int8_t i=0;i<=5;i++)//系统时间
+    {
+        regs[i+2] = sys_time[i];
+    }
 
     int addr = 7000;
     int nb = 10;
diff --git a/applications/data/Variable.c b/applications/data/Variable.c
index f919a7a..bdf76e1 100644
--- a/applications/data/Variable.c
+++ b/applications/data/Variable.c
@@ -2,9 +2,12 @@
 #include <string.h>
 
 // ===== 实际定义 =====
+//系统信息变量
+rt_int32_t sys_temperature;//主机环境温度
+rt_int32_t sys_humidity;//主机环境湿度
+unsigned char sys_time[6];//系统时间
+unsigned int sys_run_time;//运行时间
 
-unsigned int sys_temperature;
-unsigned int sys_humidity;
 
 // 动态数据缓冲区（初始化为 NULL，后续分配）
 char *DATA_dat;
diff --git a/applications/drv/drv_aht20.c b/applications/drv/drv_aht20.c
index ced01e4..5b2fc5c 100644
--- a/applications/drv/drv_aht20.c
+++ b/applications/drv/drv_aht20.c
@@ -135,8 +135,8 @@ static void aht20_thread_entry(void *parameter)
 {
     rt_uint8_t raw_data[6];
 
-    extern unsigned int sys_temperature;
-    extern unsigned int sys_humidity;
+    extern rt_int32_t sys_temperature;
+    extern rt_int32_t sys_humidity;
 
     while (1)
     {
diff --git a/applications/drv/drv_ds1307.c b/applications/drv/drv_ds1307.c
index b1d7055..f3097e0 100644
--- a/applications/drv/drv_ds1307.c
+++ b/applications/drv/drv_ds1307.c
@@ -141,6 +141,9 @@ static void ds1307_read_time(void)
 }
 
 /* Software thread to maintain local time estimation */
+time_t now;
+struct tm *p_tm;
+extern unsigned char sys_time[6];
 static void auto_update_current_datatime(void *parameter)
 {
     uint32_t count = 0;
@@ -154,6 +157,14 @@ static void auto_update_current_datatime(void *parameter)
             ds1307_read_time();
             count = 0;
         }
+        time(&now);                 // 获取当前日历时间（秒，自 1970-01-01 00:00:00 UTC）
+        p_tm = localtime(&now);     // 转换为本地时间结构
+        sys_time[5]= p_tm->tm_year - 100;
+        sys_time[4]= p_tm->tm_mon + 1;
+        sys_time[3]= p_tm->tm_mday;
+        sys_time[2]= p_tm->tm_hour;
+        sys_time[1]= p_tm->tm_min;
+        sys_time[0]= p_tm->tm_sec;;
     }
 }
 
@@ -210,7 +221,7 @@ static int rt_hw_ds1307_rtc_init(void)
 
     ds1307_read_time();
 
-    ds1307.thd_soft_update_sec = rt_thread_create("ds1307",auto_update_current_datatime,RT_NULL,256, 20, 5);
+    ds1307.thd_soft_update_sec = rt_thread_create("ds1307",auto_update_current_datatime,RT_NULL,512, 20, 5);
     if (ds1307.thd_soft_update_sec)
     {
         rt_thread_startup(ds1307.thd_soft_update_sec);