diff --git a/CMakeLists.txt b/CMakeLists.txt
index deae87d..9eed951 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.16)
 
-project(AntiClipSettings VERSION 1.1 LANGUAGES C CXX)
+project(AntiClipSettings VERSION 1.2 LANGUAGES C CXX)
 set(APPLICATION_NAME "视觉防夹设备上位机工具")
 
 set(CMAKE_CXX_STANDARD 17)
diff --git a/qml/Main.qml b/qml/Main.qml
index 653c63a..192839c 100644
--- a/qml/Main.qml
+++ b/qml/Main.qml
@@ -21,6 +21,8 @@ ApplicationWindow {
                 onClicked: {
                     deviceList.currentIndex = -1
                     App.startSearchDevice()
+                    App.collector.stop()    // 停止数据采集
+                    App.collector.path=""
                 }
             }
             Label {
@@ -87,8 +89,9 @@ ApplicationWindow {
             }
         }
         onCurrentIndexChanged: {
-            // deviceVersion.text = App.devices.get(deviceList.currentIndex).softwareVersion;
             App.connectToDevice(deviceList.currentIndex)
+            App.collector.stop()    // 停止数据采集
+            App.collector.path=""
         }
         ProgressBar {
             anchors.left: parent.left
@@ -213,14 +216,16 @@ ApplicationWindow {
     function showFolderDialog(onSelected) {
         let dialog = null
         if (isQt5) {
-            dialog = Qt.createQmlObject("import Qt.labs.platform 1.1; FolderDialog {}", window, "myDynamicSnippet")
+            dialog = Qt.createQmlObject("import QtQuick.Dialogs 1.3; FileDialog {}", window, "myDynamicSnippet")
+            dialog.selectExisting = true
+            dialog.selectFolder = true
         } else {
             dialog = Qt.createQmlObject("import QtQuick.Dialogs; FolderDialog {}", window, "myDynamicSnippet")
         }
         if (dialog) {
             dialog.visible = true
             dialog.accepted.connect(function () {
-                onSelected(isQt5 ? dialog.folder : dialog.selectedFolder)
+                onSelected(isQt5 ? dialog.fileUrl : dialog.selectedFolder)
                 dialog.destroy()
             })
             dialog.rejected.connect(function () {