ViewModels/MainViewModel.cs

@@ -5,6 +5,7 @@ using System.Net;
 using System.Threading.Tasks;
 using System.Windows;
 using System.Windows.Input;
+using System.Windows.Threading;
 using static OfficeOpenXml.ExcelErrorValue;
 
 namespace MembranePoreTester.ViewModels
@@ -12,6 +13,41 @@ namespace MembranePoreTester.ViewModels
     public class MainViewModel : ViewModelBase
     {
         public ObservableCollection<StationItem> Stations { get; } = new();
+
+
+
+        // 报警信息集合（用于显示多条）
+        private ObservableCollection<string> _alarmMessages;
+        public ObservableCollection<string> AlarmMessages
+        {
+            get => _alarmMessages;
+            set => SetProperty(ref _alarmMessages, value);
+        }
+
+        private bool _hasAlarm;
+        public bool HasAlarm
+        {
+            get => _hasAlarm;
+            set => SetProperty(ref _hasAlarm, value);
+        }
+
+        private string _alarmText;
+        public string AlarmText
+        {
+            get => _alarmText;
+            set => SetProperty(ref _alarmText, value);
+        }
+
+        private DispatcherTimer _alarmTimer;
+
+
+
+
+
+
+
+
+
         public class PressureModeItem
         {
             public string Text { get; set; }
@@ -396,6 +432,52 @@ namespace MembranePoreTester.ViewModels
                 };
                 Stations.Add(station);
             }
+
+
+            AlarmMessages = new ObservableCollection<string>();
+
+            _alarmTimer = new DispatcherTimer { Interval = TimeSpan.FromSeconds(1) };
+            _alarmTimer.Tick += async (s, e) => await RefreshAlarms();
+            _alarmTimer.Start();
+        }
+
+
+
+        private async Task RefreshAlarms()
+        {
+            try
+            {
+                var plc = App.PlcService;
+                var config = App.PlcConfig;
+
+                // 读取4个报警线圈状态
+                bool smallFlowAlarm = await plc.ReadCoilAsync(config.SmallFlowAlarm);
+                bool bigFlowAlarm = await plc.ReadCoilAsync(config.BigFlowAlarm);
+                bool highPressAlarm = await plc.ReadCoilAsync(config.HighPressAlarm);
+                bool lowPressAlarm = await plc.ReadCoilAsync(config.LowPressAlarm);
+
+                // 收集当前报警信息
+                var newAlarms = new List<string>();
+                if (smallFlowAlarm) newAlarms.Add("小流量计报警");
+                if (bigFlowAlarm) newAlarms.Add("大流量报警");
+                if (highPressAlarm) newAlarms.Add("高压超限");
+                if (lowPressAlarm) newAlarms.Add("低压超限");
+
+                // 更新UI（避免频繁刷新集合导致界面闪烁，直接替换内容）
+                Application.Current.Dispatcher.Invoke(() =>
+                {
+                    AlarmMessages.Clear();
+                    foreach (var msg in newAlarms)
+                        AlarmMessages.Add(msg);
+
+                    HasAlarm = newAlarms.Any();
+                    AlarmText = HasAlarm ? string.Join("；", newAlarms) : "";
+                });
+            }
+            catch (Exception ex)
+            {
+                System.Diagnostics.Debug.WriteLine($"读取报警状态失败: {ex.Message}");
+            }
         }
     }
 }