diff --git a/WebApi_data_value/Controllers/Yuntech_in_car_tableController.cs b/WebApi_data_value/Controllers/Yuntech_in_car_tableController.cs
index 2ab20c5..1712315 100644
--- a/WebApi_data_value/Controllers/Yuntech_in_car_tableController.cs
+++ b/WebApi_data_value/Controllers/Yuntech_in_car_tableController.cs
@@ -261,6 +261,20 @@ namespace Parking_space_WebAPI.Controllers
             
             try
             {
+                //比對1分鐘內有無重複記錄到
+                DateTime now_time = DateTime.Now;
+                // 取得 59秒前的時間
+                DateTime time_59s_ago = now_time.AddSeconds(-59);
+                var in_car_data = await (from c in _context.yuntech_in_car_table
+                                         where c.license_plate_number == yuntech_in_car_table.license_plate_number
+                                         where c.out_time == null
+                                         orderby c.in_time descending
+                                         select c).FirstOrDefaultAsync();
+                if (in_car_data != null && in_car_data.in_time > time_59s_ago)
+                {
+                    return Ok();
+                }
+                // 新增資料
                 yuntech_in_car_table.in_time = DateTime.Now;
                 yuntech_in_car_table.out_time = null;
                 _context.yuntech_in_car_table.Add(yuntech_in_car_table);
@@ -320,7 +334,10 @@ namespace Parking_space_WebAPI.Controllers
                                      where c.out_time ==null
                                      orderby c.in_time descending
                                      select c).FirstOrDefaultAsync();
-            if (in_car_data != null)
+            DateTime now_time = DateTime.Now;
+            // 取得 30秒前的時間
+            DateTime time_30s_ago = now_time.AddSeconds(-30);
+            if (in_car_data != null && in_car_data.in_time<time_30s_ago)
             {
                 // 处理找到记录的情况
                 _context.yuntech_in_car_table.Remove(in_car_data);