diff --git a/ADP/App.xaml.cs b/ADP/App.xaml.cs
index 6700c36..e41103a 100644
--- a/ADP/App.xaml.cs
+++ b/ADP/App.xaml.cs
@@ -85,6 +85,7 @@ namespace ADP
             containerRegistry.RegisterScoped<DeviceManager>();
             containerRegistry.RegisterSingleton<GlobalInfo>();
             containerRegistry.RegisterSingleton<HardwareDataBroadcaster>();
+            containerRegistry.RegisterSingleton<CANSignalBroadcaster>();
             //注册AutoMapper
             var config = new MapperConfiguration(
                  cfg => cfg.AddProfile<AutoMapperProfile>(),
diff --git a/MonitorModule/ViewModels/Dialogs/ValueLimitViewModel.cs b/MonitorModule/ViewModels/Dialogs/ValueLimitViewModel.cs
index 8de91b4..86dbc84 100644
--- a/MonitorModule/ViewModels/Dialogs/ValueLimitViewModel.cs
+++ b/MonitorModule/ViewModels/Dialogs/ValueLimitViewModel.cs
@@ -1,15 +1,17 @@
-using System;
+using Common.Attributes;
+using DeviceCommand.Base;
+using Prism.Events;
+using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.Linq;
 using System.Reflection;
-using System.Runtime.CompilerServices;
-using System.Text;
-using System.Threading.Tasks;
 using System.Windows.Input;
 using UIShare.GlobalVariable;
+using UIShare.PubEvent;
 using UIShare.UIViewModel;
 using UIShare.ViewModelBase;
+using ZLGUSBCANFD;
 
 namespace MonitorModule.ViewModels.Dialogs
 {
@@ -37,41 +39,48 @@ namespace MonitorModule.ViewModels.Dialogs
             get => _ValueLimitList;
             set => SetProperty(ref _ValueLimitList, value);
         }
-        private ObservableCollection<string> _DeviceSingleList = new();
+        //private ObservableCollection<string> _DeviceSingleList = new();
 
-        public ObservableCollection<string> DeviceSingleList
-        {
-            get => _DeviceSingleList;
-            set => SetProperty(ref _DeviceSingleList, value);
-        }
-        private string _SelectCurve;
+        //public ObservableCollection<string> DeviceSingleList
+        //{
+        //    get => _DeviceSingleList;
+        //    set => SetProperty(ref _DeviceSingleList, value);
+        //}
+        //private string _SelectCurve;
 
-        public string SelectCurve
-        {
-            get => _SelectCurve;
-            set => SetProperty(ref _SelectCurve, value);
-        }
+        //public string SelectCurve
+        //{
+        //    get => _SelectCurve;
+        //    set => SetProperty(ref _SelectCurve, value);
+        //}
 
         #endregion
         #region 命令
         public ICommand SaveCommand { get; set; }
         public ICommand CloseCommand { get; set; }
-        public ICommand SelectSignalCommand { get; set; }
+        //public ICommand SelectSignalCommand { get; set; }
         public ICommand DeleteCommand { get; set; }
 
         #endregion
         private GlobalInfo _globalInfo { get; set; }
         private SystemConfig _systemConfig { get; set; }
         private IScopedProvider _scope { get; set; }
+        private DeviceManager? _deviceManager;
+
+        /// <summary>SignalName → CAN信号标识，用于DBC加载/卸载时清理</summary>
+        private readonly Dictionary<string, (string Fingerprint, string MethodName)> _canSignalMap = new();
+
+        private SubscriptionToken? _dbcLoadedToken;
+        private SubscriptionToken? _dbcUnloadedToken;
+
         public ValueLimitViewModel(IContainerProvider containerProvider) : base(containerProvider)
         {
             _globalInfo = containerProvider.Resolve<GlobalInfo>();
             _eventAggregator = containerProvider.Resolve<IEventAggregator>();
             SaveCommand = new DelegateCommand(OnSave);
             CloseCommand = new DelegateCommand(OnClose);
-            SelectSignalCommand = new DelegateCommand(SelectSignal);
+            //SelectSignalCommand = new DelegateCommand(SelectSignal);
             DeleteCommand = new DelegateCommand(Deletel);
-            InitData();
         }
         #region 命令处理
         private void Deletel()
@@ -90,35 +99,138 @@ namespace MonitorModule.ViewModels.Dialogs
 
         private void InitData()
         {
-            //ValueLimitList = new(_systemConfig.ValueLimitList);
-            //foreach (var _PollingRead in _devices.PollingReadDic)
-            //{
-            //    string deviceName = _PollingRead.Key;
-            //    PollingRead pollingRead = _PollingRead.Value;
+            ValueLimitList = new ObservableCollection<ValueLimitVM>();
+            //DeviceSingleList = new ObservableCollection<string>();
+            _canSignalMap.Clear();
 
-            //    var props = pollingRead.GetType().GetProperties(BindingFlags.Public | BindingFlags.Instance)
-            //               .Where(p => p.PropertyType == typeof(double));
+            // 1. 加载已保存的 ValueLimitList（保留用户设置）
+            if (_systemConfig?.ValueLimitList != null)
+            {
+                foreach (var item in _systemConfig.ValueLimitList)
+                    ValueLimitList.Add(item);
+            }
 
-            //    foreach (var prop in props)
-            //    {
-            //        DeviceSingleList.Add(deviceName + "." + prop.Name);
-            //    }
-            //}
-            //foreach (var Signal in _systemConfig.ConfigurationList)
-            //{
-            //    DeviceSingleList.Add($"{Signal.Channel}/{Signal.MessageName}/{Signal.SignalName}");
-            //}
+            // 2. 发现设备方法信号并加入 ValueLimitList / DeviceSingleList
+            foreach (var signal in DiscoverDeviceSignals())
+            {
+                //DeviceSingleList.Add(signal);
+                EnsureValueLimit(signal);
+            }
+
+            // 3. 发现 CAN 信号并加入 ValueLimitList / DeviceSingleList
+            foreach (var (displayName, fingerprint, methodName) in DiscoverCanSignals())
+            {
+                //DeviceSingleList.Add(displayName);
+                _canSignalMap[displayName] = (fingerprint, methodName);
+                EnsureValueLimit(displayName);
+            }
         }
 
-        private void SelectSignal()
+        /// <summary>
+        /// 发现当前作用域所有可监测的设备方法信号（与 MonitorViewModel 逻辑一致）。
+        /// 返回 DisplayName 列表。
+        /// </summary>
+        private IEnumerable<string> DiscoverDeviceSignals()
         {
-            if (ValueLimitList.Where(x => x.SignalName == SelectCurve).Count() > 0)
+            if (_deviceManager?.DeviceMap == null) yield break;
+
+            var instanceToFp = BuildInstanceToFingerprint();
+            foreach (var kvp in _deviceManager.DeviceMap)
             {
-                return;
+                string deviceName = kvp.Key;
+                var device = kvp.Value;
+
+                if (!instanceToFp.TryGetValue(device, out string? fingerprint))
+                    continue;
+
+                var methods = device.GetType().GetMethods(BindingFlags.Public | BindingFlags.Instance)
+                    .Where(m =>
+                    {
+                        if (m.GetCustomAttribute<MonitorableAttribute>() == null) return false;
+                        if (m.ReturnType != typeof(Task<string>)) return false;
+                        var parms = m.GetParameters();
+                        return parms.Length == 0 ||
+                               (parms.Length == 1 && parms[0].ParameterType == typeof(CancellationToken));
+                    });
+
+                foreach (var method in methods)
+                {
+                    var attr = method.GetCustomAttribute<MonitorableAttribute>();
+                    string displayName = !string.IsNullOrEmpty(attr?.Description)
+                        ? $"{deviceName}.{attr.Description}"
+                        : $"{deviceName}.{method.Name}";
+                    yield return displayName;
+                }
             }
+        }
+
+        /// <summary>
+        /// 构建设备实例 → 硬件指纹的反向查找表。
+        /// </summary>
+        private Dictionary<object, string> BuildInstanceToFingerprint()
+        {
+            var map = new Dictionary<object, string>(ReferenceEqualityComparer.Instance);
+            if (_globalInfo?.HardwarePool == null) return map;
+
+            foreach (var poolEntry in _globalInfo.HardwarePool)
+            {
+                var lazy = poolEntry.Value;
+                if (lazy.IsValueCreated && lazy.Value != null)
+                    map[lazy.Value] = poolEntry.Key;
+            }
+            return map;
+        }
+
+        /// <summary>
+        /// 发现当前已加载 DBC 中的 CAN 信号（以 ConfigurationList 为白名单）。
+        /// 返回 (DisplayName, Fingerprint, MethodName) 列表。
+        /// </summary>
+        private IEnumerable<(string DisplayName, string Fingerprint, string MethodName)> DiscoverCanSignals()
+        {
+            if (_deviceManager?.CANFD?.DBCParser?.MsgDatabase == null) yield break;
+            if (_systemConfig?.ConfigurationList == null) yield break;
+
+            var msgDb = _deviceManager.CANFD.DBCParser.MsgDatabase;
+            foreach (var cfg in _systemConfig.ConfigurationList)
+            {
+                if (string.IsNullOrEmpty(cfg.SignalName)) continue;
+                if (cfg.Channel < 0 || cfg.Channel >= msgDb.Count) continue;
+
+                string fingerprint = CANSignalBroadcaster.BuildFingerprint((uint)cfg.Channel);
+                string methodName = CANSignalBroadcaster.BuildMethodName((uint)cfg.MessageID, cfg.SignalName);
+                string displayName = CANSignalBroadcaster.BuildDisplayName(cfg.MessageName, cfg.SignalName);
+
+                if (ExistsInDbc(methodName, msgDb[cfg.Channel]))
+                    yield return (displayName, fingerprint, methodName);
+            }
+        }
+
+        /// <summary>
+        /// 判断指定的 MethodName 是否存在于该通道的 DBC 消息数据库中。
+        /// </summary>
+        private static bool ExistsInDbc(string methodName, List<_Msg_> messages)
+        {
+            if (string.IsNullOrEmpty(methodName)) return false;
+            int dotIndex = methodName.IndexOf('.');
+            if (dotIndex <= 0 || dotIndex >= methodName.Length - 1) return false;
+
+            if (!uint.TryParse(methodName.Substring(0, dotIndex), System.Globalization.NumberStyles.HexNumber, null, out uint msgId))
+                return false;
+            string signalName = methodName.Substring(dotIndex + 1);
+
+            return messages.Any(m => m.msg_id == msgId && m.signal_Name != null && m.signal_Name.Contains(signalName));
+        }
+
+        /// <summary>
+        /// 确保 ValueLimitList 中存在指定信号；不存在则添加默认值。
+        /// </summary>
+        private void EnsureValueLimit(string signalName)
+        {
+            if (ValueLimitList.Any(x => x.SignalName == signalName)) return;
+
             ValueLimitList.Add(new ValueLimitVM
             {
-                SignalName = SelectCurve,
+                SignalName = signalName,
                 Upper = 9999,
                 Lower = -9999,
                 UpperExtreme = 9999,
@@ -126,6 +238,34 @@ namespace MonitorModule.ViewModels.Dialogs
             });
         }
 
+        /// <summary>
+        /// 从 ValueLimitList 和 DeviceSingleList 中移除指定信号。
+        /// </summary>
+        private void RemoveValueLimit(string signalName)
+        {
+            var item = ValueLimitList.FirstOrDefault(x => x.SignalName == signalName);
+            if (item != null) ValueLimitList.Remove(item);
+
+            //if (DeviceSingleList.Contains(signalName))
+            //    DeviceSingleList.Remove(signalName);
+        }
+
+        //private void SelectSignal()
+        //{
+        //    if (ValueLimitList.Where(x => x.SignalName == SelectCurve).Count() > 0)
+        //    {
+        //        return;
+        //    }
+        //    ValueLimitList.Add(new ValueLimitVM
+        //    {
+        //        SignalName = SelectCurve,
+        //        Upper = 9999,
+        //        Lower = -9999,
+        //        UpperExtreme = 9999,
+        //        LowerExtreme = -9999,
+        //    });
+        //}
+
         private void OnClose()
         {
             RequestClose.Invoke();
@@ -146,7 +286,96 @@ namespace MonitorModule.ViewModels.Dialogs
             if (parameters != null && parameters.ContainsKey("Scope")) // 修复：Prism 中应使用 ContainsKey
             {
                 _scope = parameters.GetValue<IScopedProvider>("Scope");
-                _systemConfig= _scope.Resolve<SystemConfig>();
+                _systemConfig = _scope.Resolve<SystemConfig>();
+                _deviceManager = _scope.Resolve<DeviceManager>();
+
+                // 3. 订阅 DBC 加载/卸载事件
+                _dbcLoadedToken = _eventAggregator.GetEvent<DBCLoadedEvent>()
+                    .Subscribe(OnDbcLoaded, ThreadOption.UIThread);
+                _dbcUnloadedToken = _eventAggregator.GetEvent<DBCUnloadedEvent>()
+                    .Subscribe(OnDbcUnloaded, ThreadOption.UIThread);
+
+                // 4. 初始化数据
+                InitData();
+            }
+        }
+
+        public override void OnDialogClosed()
+        {
+            base.OnDialogClosed();
+
+            // 取消 DBC 事件订阅，避免内存泄漏
+            if (_dbcLoadedToken != null)
+                _eventAggregator.GetEvent<DBCLoadedEvent>().Unsubscribe(_dbcLoadedToken);
+            if (_dbcUnloadedToken != null)
+                _eventAggregator.GetEvent<DBCUnloadedEvent>().Unsubscribe(_dbcUnloadedToken);
+        }
+
+        /// <summary>
+        /// DBCLoadedEvent 回调：清理该通道中不存在于 DBC 的 CAN 信号限制项。
+        /// </summary>
+        private void OnDbcLoaded(DBCLoadedArgs args)
+        {
+            if (args.Scope != _systemConfig?.Title) return;
+            if (_deviceManager?.CANFD?.DBCParser?.MsgDatabase == null) return;
+
+            int channel = (int)args.Channel;
+            var msgDb = _deviceManager.CANFD.DBCParser.MsgDatabase;
+            if (channel < 0 || channel >= msgDb.Count) return;
+
+            string fingerprint = CANSignalBroadcaster.BuildFingerprint(args.Channel);
+
+            // 1. 移除该通道中已失效的 CAN 信号限制项
+            var staleSignals = _canSignalMap
+                .Where(kvp => kvp.Value.Fingerprint == fingerprint &&
+                              !ExistsInDbc(kvp.Value.MethodName, msgDb[channel]))
+                .Select(kvp => kvp.Key)
+                .ToList();
+
+            foreach (var signalName in staleSignals)
+            {
+                RemoveValueLimit(signalName);
+                _canSignalMap.Remove(signalName);
+            }
+
+            // 2. 根据 ConfigurationList 补充新加载的有效信号
+            if (_systemConfig?.ConfigurationList != null)
+            {
+                foreach (var cfg in _systemConfig.ConfigurationList.Where(c => c.Channel == channel))
+                {
+                    if (string.IsNullOrEmpty(cfg.SignalName)) continue;
+
+                    string methodName = CANSignalBroadcaster.BuildMethodName((uint)cfg.MessageID, cfg.SignalName);
+                    string displayName = CANSignalBroadcaster.BuildDisplayName(cfg.MessageName, cfg.SignalName);
+
+                    if (ExistsInDbc(methodName, msgDb[channel]))
+                    {
+                        _canSignalMap[displayName] = (fingerprint, methodName);
+                        //if (!DeviceSingleList.Contains(displayName))
+                        //    DeviceSingleList.Add(displayName);
+                        EnsureValueLimit(displayName);
+                    }
+                }
+            }
+        }
+
+        /// <summary>
+        /// DBCUnloadedEvent 回调：删除该通道所有 CAN 信号的限制项。
+        /// </summary>
+        private void OnDbcUnloaded(DBCUnloadedArgs args)
+        {
+            if (args.Scope != _systemConfig?.Title) return;
+
+            string fingerprint = CANSignalBroadcaster.BuildFingerprint(args.Channel);
+            var toRemove = _canSignalMap
+                .Where(kvp => kvp.Value.Fingerprint == fingerprint)
+                .Select(kvp => kvp.Key)
+                .ToList();
+
+            foreach (var signalName in toRemove)
+            {
+                RemoveValueLimit(signalName);
+                _canSignalMap.Remove(signalName);
             }
         }
     }
diff --git a/MonitorModule/ViewModels/MonitorViewModel.cs b/MonitorModule/ViewModels/MonitorViewModel.cs
index 44b685d..59eb4b0 100644
--- a/MonitorModule/ViewModels/MonitorViewModel.cs
+++ b/MonitorModule/ViewModels/MonitorViewModel.cs
@@ -109,9 +109,12 @@ namespace MonitorModule.ViewModels
         };
         private int _colorIndex;
 
-        /// <summary>广播器（由 UIShare 层注入，每 Scope 一个实例）</summary>
+        /// <summary>设备数据广播器（全局单例）</summary>
         private HardwareDataBroadcaster? _broadcaster;
 
+        /// <summary>CAN 信号广播器（全局单例）</summary>
+        private CANSignalBroadcaster? _canSignalBroadcaster;
+
         /// <summary>用于 OxyPlot X 轴相对秒数</summary>
         private readonly Stopwatch _stopwatch = new();
 
@@ -318,6 +321,7 @@ namespace MonitorModule.ViewModels
                 _systemConfig = _scope.Resolve<SystemConfig>();
                 RaisePropertyChanged(nameof(Channels));
                 _broadcaster = _scope.Resolve<HardwareDataBroadcaster>();
+                _canSignalBroadcaster = _scope.Resolve<CANSignalBroadcaster>();
                 IsInitiated = true;
 
                 if (_monitorCTS == null) _monitorCTS = new CancellationTokenSource();
@@ -334,6 +338,8 @@ namespace MonitorModule.ViewModels
                 // 4. 启动广播器（Discover + Start）
                 _broadcaster.Discover();
                 _broadcaster.Start();
+                _canSignalBroadcaster.Discover();
+                _canSignalBroadcaster.Start();
 
                 // 5. 订阅 HardwareDataReportedEvent（UI 线程回调）
                 _subscriptionToken = _eventAggregator.GetEvent<HardwareDataReportedEvent>()
diff --git a/MonitorModule/Views/Dialogs/ValueLimitView.xaml b/MonitorModule/Views/Dialogs/ValueLimitView.xaml
index 3eddfcd..3153065 100644
--- a/MonitorModule/Views/Dialogs/ValueLimitView.xaml
+++ b/MonitorModule/Views/Dialogs/ValueLimitView.xaml
@@ -73,15 +73,15 @@
                                         Width="auto" />
 
                 </DataGrid.Columns>
-                <DataGrid.ContextMenu>
+                <!--<DataGrid.ContextMenu>
                     <ContextMenu>
                         <MenuItem Header="删除"
                                   Foreground="Red"
                                   Command="{Binding DeleteCommand}" />
                     </ContextMenu>
-                </DataGrid.ContextMenu>
+                </DataGrid.ContextMenu>-->
             </DataGrid>
-            <StackPanel Grid.Row="1"
+            <!--<StackPanel Grid.Row="1"
                         Orientation="Horizontal"
                         HorizontalAlignment="Left"
                         Margin="0,10,0,0">
@@ -95,7 +95,7 @@
                 <Button Content="添加"
                         Margin="10,0,10,0"
                         Command="{Binding SelectSignalCommand}" />
-            </StackPanel>
+            </StackPanel>-->
             <StackPanel Grid.Row="1"
                         Orientation="Horizontal"
                         HorizontalAlignment="Right"
diff --git a/UIShare/GlobalVariable/CANSignalBroadcaster.cs b/UIShare/GlobalVariable/CANSignalBroadcaster.cs
index e207a4c..634fa5b 100644
--- a/UIShare/GlobalVariable/CANSignalBroadcaster.cs
+++ b/UIShare/GlobalVariable/CANSignalBroadcaster.cs
@@ -1,6 +1,8 @@
 using Model.Models;
 using Prism.Events;
 using System;
+using System.Collections.Generic;
+using System.Linq;
 using System.Text;
 using UIShare.PubEvent;
 using ZLGUSBCANFD;
@@ -8,78 +10,108 @@ using ZLGUSBCANFD;
 namespace UIShare.GlobalVariable
 {
     /// <summary>
-    /// CAN 信号广播器：订阅 ZLGCANFD.OnDbcMessageDecoded 事件，
-    /// 将解码后的 DBC 信号值通过 HardwareDataReportedEvent 广播给监控系统。
-    /// 由 DeviceManager 创建和管理，生命周期与 CAN 设备绑定。
+    /// CAN 信号广播器（全局单例）：
+    /// 统一订阅 GlobalInfo.CanPool 中所有已实例化的 ZLGCANFD 设备，
+    /// 将 DBC 解码后的信号值广播给所有引用该 CAN 设备的作用域，
+    /// 并同步检查各作用域 ValueLimitList 的超限报警。
     /// </summary>
     public class CANSignalBroadcaster : IDisposable
     {
         private readonly IEventAggregator _eventAggregator;
-        private readonly string _scopeName;
-        private ZLGCANFD? _canfd;
+        private readonly GlobalInfo _globalInfo;
         private bool _disposed;
 
-        public CANSignalBroadcaster(IEventAggregator eventAggregator, string scopeName)
+        /// <summary>已订阅解码事件的 CANFD 实例 → 委托 映射</summary>
+        private readonly Dictionary<ZLGCANFD, Action<uint, ZDBC.DBCMessage>> _handlers = new();
+
+        public CANSignalBroadcaster(GlobalInfo globalInfo, IEventAggregator eventAggregator)
         {
+            _globalInfo = globalInfo;
             _eventAggregator = eventAggregator;
-            _scopeName = scopeName;
         }
 
         /// <summary>
-        /// 绑定 CANFD 实例并订阅解码事件。
+        /// 扫描 GlobalInfo.CanPool 中已创建的 CANFD 实例并订阅解码事件。
+        /// 幂等：已订阅的实例不会重复订阅。
         /// </summary>
-        public void Bind(ZLGCANFD canfd)
+        public void Discover()
         {
-            Unbind();
-            _canfd = canfd;
-            _canfd.OnDbcMessageDecoded += OnDbcMessageDecoded;
-        }
+            if (_disposed) return;
 
-        /// <summary>
-        /// 取消订阅。
-        /// </summary>
-        public void Unbind()
-        {
-            if (_canfd != null)
+            foreach (var kvp in _globalInfo.CanPool)
             {
-                _canfd.OnDbcMessageDecoded -= OnDbcMessageDecoded;
-                _canfd = null;
+                string fingerprint = kvp.Key;
+                var lazy = kvp.Value;
+                if (!lazy.IsValueCreated || lazy.Value == null) continue;
+
+                var canfd = lazy.Value;
+                if (_handlers.ContainsKey(canfd)) continue;
+
+                // 使用闭包捕获指纹，回调时即可区分不同 CAN 卡
+                Action<uint, ZDBC.DBCMessage> handler = (channel, msg) => OnDbcMessageDecoded(fingerprint, channel, msg);
+                canfd.OnDbcMessageDecoded += handler;
+                _handlers[canfd] = handler;
             }
         }
 
         /// <summary>
-        /// DBC 解码回调：提取所有信号并广播。
+        /// 启动广播器（目前 Discover 已完成订阅，此处保留以兼容 HardwareDataBroadcaster 的使用模式）。
         /// </summary>
-        private void OnDbcMessageDecoded(uint channel, ZDBC.DBCMessage msg)
+        public void Start()
+        {
+            Discover();
+        }
+
+        /// <summary>
+        /// DBC 解码回调：提取所有信号，向引用该 CAN 设备的作用域广播，并检查报警。
+        /// </summary>
+        private void OnDbcMessageDecoded(string canFingerprint, uint channel, ZDBC.DBCMessage msg)
         {
             if (_disposed) return;
 
-            string fingerprint = $"CAN:{channel}";
+            string signalFingerprint = BuildFingerprint(channel);
             var now = DateTime.Now;
 
+            // 获取引用该 CAN 设备的所有作用域
+            var scopes = GetScopesForFingerprint(canFingerprint);
+            if (scopes.Count == 0) return;
+
             for (int i = 0; i < msg.nSignalCount; i++)
             {
                 var signal = msg.vSignals[i];
                 string signalName = Encoding.Default.GetString(signal.strName).TrimEnd('\0');
                 if (string.IsNullOrEmpty(signalName)) continue;
 
-                // 计算物理值：physical = raw * factor + offset
                 double physicalValue = signal.nRawvalue * signal.nFactor + signal.nOffset;
+                string methodName = BuildMethodName(msg.nID, signalName);
 
-                // MethodName 格式："{MessageId:X}.{SignalName}"
-                string methodName = $"{msg.nID:X}.{signalName}";
-
-                _eventAggregator.GetEvent<HardwareDataReportedEvent>().Publish(new HardwareReportArgs
+                foreach (var scope in scopes)
                 {
-                    Scope = _scopeName,
-                    HardwareFingerprint = fingerprint,
-                    MethodName = methodName,
-                    Value = physicalValue,
-                    Time = now
-                });
+                    _eventAggregator.GetEvent<HardwareDataReportedEvent>().Publish(new HardwareReportArgs
+                    {
+                        Scope = scope,
+                        HardwareFingerprint = signalFingerprint,
+                        MethodName = methodName,
+                        Value = physicalValue,
+                        Time = now
+                    });
+
+                    ValueLimitAlarmHelper.CheckAlarm(scope, signalFingerprint, methodName, physicalValue, _globalInfo);
+                }
             }
         }
 
+        /// <summary>获取指定硬件指纹当前被哪些作用域引用</summary>
+        private List<string> GetScopesForFingerprint(string fingerprint)
+        {
+            if (_globalInfo.DeviceAndScopeDic.TryGetValue(fingerprint, out var lazy))
+            {
+                var scopeList = lazy.Value;
+                lock (scopeList) return scopeList.ToList();
+            }
+            return new List<string>();
+        }
+
         /// <summary>
         /// 生成 CAN 信号的 DisplayName 格式："{MessageName}.{SignalName}"
         /// </summary>
@@ -108,7 +140,13 @@ namespace UIShare.GlobalVariable
         {
             if (_disposed) return;
             _disposed = true;
-            Unbind();
+
+            foreach (var kvp in _handlers)
+            {
+                if (kvp.Key != null)
+                    kvp.Key.OnDbcMessageDecoded -= kvp.Value;
+            }
+            _handlers.Clear();
         }
     }
 }
diff --git a/UIShare/GlobalVariable/DeviceManager.cs b/UIShare/GlobalVariable/DeviceManager.cs
index c0bacdc..e1e9bfe 100644
--- a/UIShare/GlobalVariable/DeviceManager.cs
+++ b/UIShare/GlobalVariable/DeviceManager.cs
@@ -27,9 +27,6 @@ namespace UIShare.GlobalVariable
         private readonly string _scopeName;
         private readonly IEventAggregator _eventAggregator;
 
-        /// <summary>CAN 信号广播器：将 DBC 解码后的信号值广播给监控系统</summary>
-        private CANSignalBroadcaster? _canSignalBroadcaster;
-
         /// <summary>按 DeviceName 索引的设备字典，便于业务层按名取实例。</summary>
         public IDictionary<string, IBaseInterface> DeviceMap { get; private set; }
             = new Dictionary<string, IBaseInterface>(StringComparer.OrdinalIgnoreCase);
@@ -439,10 +436,6 @@ namespace UIShare.GlobalVariable
                 bool ok = await Task.Run(() =>
                 {
                     if (!CANFD.打开设备()) return false;
-                    // 启动 CAN 信号广播器
-                    _canSignalBroadcaster = new CANSignalBroadcaster(_eventAggregator, _scopeName);
-                    _canSignalBroadcaster.Bind(CANFD);
-
                     // 自动加载 DBC 文件
                     if (_systemConfig?.DBCAutoLoadList != null)
                     {
@@ -528,10 +521,6 @@ namespace UIShare.GlobalVariable
                     return;
                 }
 
-                // 先释放 CAN 信号广播器，取消事件订阅，防止关闭过程中仍触发回调
-                _canSignalBroadcaster?.Dispose();
-                _canSignalBroadcaster = null;
-
                 await Task.Run(() => CANFD.关闭CAN卡设备());
                 LoggerHelper.Info($"CAN 设备 [{name}] 已成功关闭连接。");
             }
@@ -591,10 +580,6 @@ namespace UIShare.GlobalVariable
 
         public void Dispose()
         {
-            // 释放 CAN 信号广播器
-            _canSignalBroadcaster?.Dispose();
-            _canSignalBroadcaster = null;
-
             if (string.IsNullOrEmpty(_scopeName)) return;
 
             // 遍历当前作用域用到的所有指纹，逐一移除本作用域的引用
diff --git a/UIShare/GlobalVariable/HardwareDataBroadcaster.cs b/UIShare/GlobalVariable/HardwareDataBroadcaster.cs
index 0e1329c..cfb0703 100644
--- a/UIShare/GlobalVariable/HardwareDataBroadcaster.cs
+++ b/UIShare/GlobalVariable/HardwareDataBroadcaster.cs
@@ -179,6 +179,9 @@ namespace UIShare.GlobalVariable
                                 Value = value,
                                 Time = now
                             });
+
+                            // 同步检查该作用域 ValueLimitList 是否超限
+                            ValueLimitAlarmHelper.CheckAlarm(scope, entry.Fingerprint, entry.MethodName, value, _globalInfo);
                         }
                     }
                     catch
diff --git a/UIShare/GlobalVariable/ValueLimitAlarmHelper.cs b/UIShare/GlobalVariable/ValueLimitAlarmHelper.cs
new file mode 100644
index 0000000..eea5cde
--- /dev/null
+++ b/UIShare/GlobalVariable/ValueLimitAlarmHelper.cs
@@ -0,0 +1,56 @@
+using System.Linq;
+using UIShare.UIViewModel;
+
+namespace UIShare.GlobalVariable
+{
+    /// <summary>
+    /// 值限制报警检查辅助类：供各广播器在采样到信号值时统一判断是否超限。
+    /// </summary>
+    public static class ValueLimitAlarmHelper
+    {
+        /// <summary>
+        /// 根据指定作用域的 ValueLimitList 检查当前值是否超限，并更新报警状态。
+        /// </summary>
+        /// <param name="scope">作用域名称</param>
+        /// <param name="fingerprint">硬件指纹</param>
+        /// <param name="methodName">方法名/信号标识</param>
+        /// <param name="value">当前采样值</param>
+        /// <param name="globalInfo">全局信息</param>
+        public static void CheckAlarm(string scope, string fingerprint, string methodName, double value, GlobalInfo globalInfo)
+        {
+            if (globalInfo?.ConfigDic == null) return;
+            if (!globalInfo.ConfigDic.TryGetValue(scope, out var systemConfig)) return;
+            if (systemConfig.ValueLimitList == null) return;
+
+            var limit = systemConfig.ValueLimitList.FirstOrDefault(x =>
+                x.Fingerprint == fingerprint && x.MethodName == methodName);
+            if (limit == null) return;    
+            if (value > limit.Upper)
+            {
+                limit.IsAlarm = true;
+                limit.AlarmSatus = AlarmStatus.超上限;
+            }
+            else if (value < limit.Lower)
+            {
+                limit.IsAlarm = true;
+                limit.AlarmSatus = AlarmStatus.超下限;
+            }
+            else if(value > limit.UpperExtreme)
+            {
+                limit.IsAlarm = true;
+                limit.AlarmSatus = AlarmStatus.超上极限;
+            }
+            else if (value < limit.LowerExtreme)
+            {
+                limit.IsAlarm = true;
+                limit.AlarmSatus = AlarmStatus.超下极限;
+            }
+            else
+            {
+                limit.IsAlarm = false;
+                limit.AlarmSatus = AlarmStatus.未报警;
+            }
+               
+        }
+    }
+}
diff --git a/UIShare/UIViewModel/ValueLimitVM.cs b/UIShare/UIViewModel/ValueLimitVM.cs
index d1f036c..a3df4d9 100644
--- a/UIShare/UIViewModel/ValueLimitVM.cs
+++ b/UIShare/UIViewModel/ValueLimitVM.cs
@@ -6,6 +6,8 @@ namespace UIShare.UIViewModel
     public class ValueLimitVM : BindableBase
     {
         private string _signalName = string.Empty;
+        private string _fingerprint = string.Empty;
+        private string _methodName = string.Empty;
         private double _upper;
         private double _lower;
         private double _upperExtreme;
@@ -14,7 +16,7 @@ namespace UIShare.UIViewModel
         private AlarmStatus _alarmStatus = AlarmStatus.未报警;
 
         /// <summary>
-        /// 信号名
+        /// 信号名（显示用）
         /// </summary>
         public string SignalName
         {
@@ -22,6 +24,24 @@ namespace UIShare.UIViewModel
             set => SetProperty(ref _signalName, value);
         }
 
+        /// <summary>
+        /// 硬件指纹（物理设备唯一标识，用于超限匹配）
+        /// </summary>
+        public string Fingerprint
+        {
+            get => _fingerprint;
+            set => SetProperty(ref _fingerprint, value);
+        }
+
+        /// <summary>
+        /// 方法名（唯一标识，用于超限匹配）
+        /// </summary>
+        public string MethodName
+        {
+            get => _methodName;
+            set => SetProperty(ref _methodName, value);
+        }
+
         /// <summary>
         /// 上限
         /// </summary>