1. 禁止第二次启动系统，避免相机报错；

2. 添加界面上的测试采集功能；

sample/api_sample/widget/widget_file/cn_big_screen/widget_config.json

@@ -110,13 +110,19 @@
                         "item_name": "等待指令"
                     },
                     {
-                        "item_name": "采集HSI"
+                        "item_name": "更新"
                     },
                     {
-                        "item_name": "重启300TC"
+                        "item_name": "重启电脑"
                     },
                     {
                         "item_name": "关机"
+                    },
+                    {
+                        "item_name": "测试采集"
+                    },
+                    {
+                        "item_name": "停止采集"
                     }
                 ]
             }

sample/api_sample/widget/widget_file/en_big_screen/widget_config.json

@@ -110,13 +110,19 @@
                 "item_name": "等待指令"
               },
               {
-                "item_name": "采集HSI"
+                "item_name": "更新"
               },
               {
                 "item_name": "重启电脑"
               },
               {
                 "item_name": "关机"
+              },
+              {
+                "item_name": "测试采集"
+              },
+              {
+                "item_name": "停止采集"
               }
             ]
           }