can信号监控曲线添加

2026-07-10 09:56:59 +08:00
parent 412b56935c
commit 52d486e2b1
7 changed files with 383 additions and 42 deletions
--- a/UIShare/GlobalVariable/CANSignalBroadcaster.cs
+++ b/UIShare/GlobalVariable/CANSignalBroadcaster.cs
@@ -0,0 +1,114 @@
+using Model.Models;
+using Prism.Events;
+using System;
+using System.Text;
+using UIShare.PubEvent;
+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。
+    /// </summary>
+    public class CANSignalBroadcaster : IDisposable
+    {
+        private readonly IEventAggregator _eventAggregator;
+        private readonly string _scopeName;
+        private ZLGCANFD? _canfd;
+        private bool _disposed;
+
+        public CANSignalBroadcaster(IEventAggregator eventAggregator, string scopeName)
+        {
+            _eventAggregator = eventAggregator;
+            _scopeName = scopeName;
+        }
+
+        /// <summary>
+        /// 绑定 CANFD 实例并订阅解码事件。
+        /// </summary>
+        public void Bind(ZLGCANFD canfd)
+        {
+            Unbind();
+            _canfd = canfd;
+            _canfd.OnDbcMessageDecoded += OnDbcMessageDecoded;
+        }
+
+        /// <summary>
+        /// 取消订阅。
+        /// </summary>
+        public void Unbind()
+        {
+            if (_canfd != null)
+            {
+                _canfd.OnDbcMessageDecoded -= OnDbcMessageDecoded;
+                _canfd = null;
+            }
+        }
+
+        /// <summary>
+        /// DBC 解码回调：提取所有信号并广播。
+        /// </summary>
+        private void OnDbcMessageDecoded(uint channel, ZDBC.DBCMessage msg)
+        {
+            if (_disposed) return;
+
+            string fingerprint = $"CAN:{channel}";
+            var now = DateTime.Now;
+
+            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;
+
+                // MethodName 格式："{MessageId:X}.{SignalName}"
+                string methodName = $"{msg.nID:X}.{signalName}";
+
+                _eventAggregator.GetEvent<HardwareDataReportedEvent>().Publish(new HardwareReportArgs
+                {
+                    Scope = _scopeName,
+                    HardwareFingerprint = fingerprint,
+                    MethodName = methodName,
+                    Value = physicalValue,
+                    Time = now
+                });
+            }
+        }
+
+        /// <summary>
+        /// 生成 CAN 信号的 DisplayName 格式："{MessageName}.{SignalName}"
+        /// </summary>
+        public static string BuildDisplayName(string messageName, string signalName)
+        {
+            return $"{messageName}.{signalName}";
+        }
+
+        /// <summary>
+        /// 生成 CAN 信号的 MethodName 格式："{MessageId:X}.{SignalName}"
+        /// </summary>
+        public static string BuildMethodName(uint messageId, string signalName)
+        {
+            return $"{messageId:X}.{signalName}";
+        }
+
+        /// <summary>
+        /// 生成 CAN 信号的 Fingerprint 格式："CAN:{Channel}"
+        /// </summary>
+        public static string BuildFingerprint(uint channel)
+        {
+            return $"CAN:{channel}";
+        }
+
+        public void Dispose()
+        {
+            if (_disposed) return;
+            _disposed = true;
+            Unbind();
+        }
+    }
+}