在工业信息化行业，少不了生产可视化的模块，其中应用最多的是采用LED屏的方式，通过软件控制屏幕展示相关的生产计划完成状态，工位的状态，产线的运行状态，以及相关自动化设备的状态等，这就要求通信实时性，准确性。LED屏控制核心在于控制卡目前市场上各种控制卡种类繁多，今天先介绍下EQ系列的控制卡吧。其实通信实时性要求采用同步卡效果最佳，但是苦于现场不想增加专用的控制电脑（大部分同步卡原理即抓屏模式，实时展现电脑桌面的内容，电脑不能同时进行其他操作），所以决定采用异步卡异步通信，直接在后台通过程序建立和LED屏幕的连接，实时发送数据给LED屏幕。此篇就讲下根据官方二次开发包开发的问题。
此处我们采用的是网络通讯的方式，即EQ控制卡上需固定IP，用以识别并和控制程序建立连接。
EQ2008_Dll.dll是官方提供的开发接口，其中的接口方法包含如下：
using System;
using System.Runtime.InteropServices;
using ServiceCloud.Devices.Led.EQ2008.Parameters;
namespace ServiceCloud.Devices.Led.EQ2008
{
/*
本动态库接口适用于：EQ火凤凰系列和蓝精灵系列控制器！
火凤凰系列：EQ2013、EQ2023、EQ2033
蓝精灵系列：EQ2012、EQ2011、EQ2008-1/2E、EQ2008-M
*/
internal class LedControllerHandler
{
# region 1.节目操作函数
/// <summary>
/// 添加节目
/// </summary>
/// <param name="CardNum">控制卡地址，基数为 1，即第一块控制卡地址为 1</param>
/// <param name="bWaitToEnd">TRUE 等待节目播放完成再播放下个节目,FALSE 节目播放时间为 iPlayTime</param>
/// <param name="iPlayTime">节目播放时间,单位为秒</param>
/// <returns>节目索引号</returns>
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern int User_AddProgram(int CardNum, Boolean bWaitToEnd, int iPlayTime);
/// <summary>
/// 删除一个节目
/// </summary>
/// <param name="CardNum">控制卡地址，基数为 1，即第一块控制卡地址为 1</param>
/// <param name="iProgramIndex">节目索引号</param>
/// <returns>0－删除失败，1－删除成功</returns>
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern bool User_DelProgram(int CardNum, int iProgramIndex);
/// <summary>
/// 删除所有节目
/// </summary>
/// <param name="CardNum">控制卡地址，基数为 1，即第一块控制卡地址为 1</param>
/// <returns>0－删除失败，1－删除成功</returns>
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern bool User_DelAllProgram(int CardNum);
/// <summary>
/// 添加文本区
/// </summary>
/// <param name="CardNum">控制卡地址，基数为 1，即第一块控制卡地址为 1</param>
/// <param name="pText">文本参数表指针，参考【参数表】中 9</param>
/// <param name="iProgramIndex">节目索引号</param>
/// <returns>-1－添加文本区失败，非-1－分区编号</returns>
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern int User_AddText(int CardNum, ref User_Text pText, int iProgramIndex);
/// <summary>
/// 添加单行文本区
/// </summary>
/// <param name="CardNum">控制卡地址，基数为 1，即第一块控制卡地址为 1</param>
/// <param name="pSingleText">单行文本参数表指针，参考【参数表】中 8</param>
/// <param name="iProgramIndex">节目索引号</param>
/// <returns>-1－添加单行文本区失败，非-1－分区编号</returns>
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern int User_AddSingleText(int CardNum, ref User_SingleText pSingleText, int iProgramIndex);
/// <summary>
/// 添加图文区
/// </summary>
/// <param name="CardNum">控制卡地址，基数为 1，即第一块控制卡地址为 1</param>
/// <param name="pBmp">图文区参数表指针，参考【参数表】中 7</param>
/// <param name="iProgramIndex">节目索引号</param>
/// <returns>-1－添加图文区失败，非-1－分区编号</returns>
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern int User_AddBmpZone(int CardNum, User_Bmp pBmp, int iProgramIndex);
/// <summary>
/// 指定图像句柄添加图片
/// </summary>
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern bool User_AddBmp(int CardNum, int iBmpPartNum, IntPtr hBitmap, ref User_MoveSet pMoveSet, int iProgramIndex);
/// <summary>
/// 指定图像路径添加图片
/// </summary>
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern bool User_AddBmpFile(int CardNum, int iBmpPartNum, string strFileName, ref User_MoveSet pMoveSet, int iProgramIndex);
/// <summary>
/// 添加时间区
/// </summary>
/// <param name="CardNum">控制卡地址，基数为 1，即第一块控制卡地址为 1</param>
/// <param name="pdateTime">时间参数表指针，参考【参数表】中 6</param>
/// <param name="iProgramIndex">节目索引号</param>
/// <returns>-1－添加时间区失败，非-1－分区编号</returns>
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern int User_AddTime(int CardNum, ref User_DateTime pdateTime, int iProgramIndex);
/// <summary>
/// 添加倒计时区
/// </summary>
/// <param name="CardNum">控制卡地址，基数为 1，即第一块控制卡地址为 1</param>
/// <param name="pTimeCount">倒计时参数表指针，参考【参数表】中 4</param>
/// <param name="iProgramIndex">节目索引号</param>
/// <returns>-1－添加计时区失败，非-1－分区编号</returns>
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern int User_AddTimeCount(int CardNum, User_Timer pTimeCount, int iProgramIndex);
/// <summary>
/// 添加温度区
/// </summary>
/// <param name="CardNum">控制卡地址，基数为 1，即第一块控制卡地址为 1</param>
/// <param name="pTemperature">温度参数表指针，参考【参数表】中 5</param>
/// <param name="iProgramIndex">节目索引号</param>
/// <returns>-1－添加温度区失败，非-1－分区编号</returns>
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern int User_AddTemperature(int CardNum, User_Temperature pTemperature, int iProgramIndex);
/// <summary>
/// 添加 RTF 文件区
/// </summary>
/// <param name="CardNum">控制卡地址，基数为 1，即第一块控制卡地址为 1</param>
/// <param name="pRTFt">RTF 文件参数表指针，参考【参数表】中 10</param>
/// <param name="iProgramIndex">节目索引号</param>
/// <returns>-1－添加文本区失败，非-1－分区编号</returns>
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern int User_AddRTF(int CardNum, User_RTF pRTFt, int iProgramIndex);
/// <summary>
/// 向控制器发送数据
/// </summary>
/// <param name="CardNum">控制卡地址，基数为 1，即第一块控制卡地址为 1</param>
/// <returns>FALSE － 发送失败，TRUE － 发送成功</returns>
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern bool User_SendToScreen(int CardNum);
#endregion
#region 2.实时发送数据（高频率发送）
//实时建立连接
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern bool User_RealtimeConnect(int CardNum);
//实时关闭连接
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern bool User_RealtimeDisConnect(int CardNum);
//实时发送图片数据
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern bool User_RealtimeSendData(int CardNum, int x, int y, int iWidth, int iHeight, IntPtr hBitmap);
//实时发送图片文件
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern Boolean User_RealtimeSendBmpData(int CardNum, int x, int y, int iWidth, int iHeight, string strFileName);
//实时发送文本
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern Boolean User_RealtimeSendText(int CardNum, int x, int y, int iWidth, int iHeight, string strText, ref User_FontSet pFontInfo);
//实时发送清屏
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern Boolean User_RealtimeScreenClear(int CardNum);
#endregion
#region 3.显示屏控制函数组
/// <summary>
/// 校正时间
/// </summary>
/// <param name="CardNum">控制卡地址，基数为 1，即第一块控制卡地址为 1</param>
/// <returns>FALSE － 板卡校正时间失败，TRUE － 板卡校正时间成功</returns>
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern Boolean User_AdjustTime(int CardNum);
/// <summary>
/// 打开显示屏
/// </summary>
/// <param name="CardNum">控制卡地址，基数为 1，即第一块控制卡地址为 1</param>
/// <returns>FALSE － 打开显示屏失败，TRUE － 打开显示屏成功</returns>
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern bool User_OpenScreen(int CardNum);
/// <summary>
/// 关闭显示屏
/// </summary>
/// <param name="CardNum">控制卡地址，基数为 1，即第一块控制卡地址为 1</param>
/// <returns>FALSE － 关闭显示屏失败，TRUE － 关闭显示屏成功</returns>
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern bool User_CloseScreen(int CardNum);
/// <summary>
/// 亮度调节
/// </summary>
/// <param name="CardNum">控制卡地址，基数为 1，即第一块控制卡地址为 1</param>
/// <param name="iLightDegreen">屏幕亮度值</param>
/// <returns></returns>
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern Boolean User_SetScreenLight(int CardNum, int iLightDegreen);
/// <summary>
/// Reload参数文件
/// </summary>
/// <param name="strEQ2008_Dll_Set_Path"></param>
[DllImport("EQ2008_Dll.dll", CharSet = CharSet.Ansi)]
public static extern void User_ReloadIniFile(string strEQ2008_Dll_Set_Path);
#endregion
[DllImport("gdi32.dll")]
public static extern bool DeleteObject(IntPtr hObject);
}
}View Code
EQ2008_Dll_Set.ini是LED屏幕的通信的配置文件，在屏幕初始化之前就要存在，可手动配置好放至程序运行的根目录，为了可复用性，在此将其在程序配置【通信地址（ip），端口号(port)，屏幕大小(screenHeight,screenWidth)，单双色(colorStyle)，控制卡型号(cardType)】，在程序运行前（即Program.cs文件中动态生成EQ2008_Dll_Set.ini文件）
var screens = BLL.Common.DataSetCache.Screens;
foreach (var screen in screens)
{
if (screen.screenType == Setting.屏幕类型.主控屏)
ServiceCloud.Devices.Led.EQ2008.LedController.Register(CardType.EQ2023, ScreenColorStyle.Multicolor, 224, 1024, screen.ip, 5005);
if (screen.screenType == Setting.屏幕类型.分装区屏)
ServiceCloud.Devices.Led.EQ2008.LedController.Register(CardType.EQ2023, ScreenColorStyle.Multicolor, 192, 192, screen.ip, 5005);
if (screen.screenType == Setting.屏幕类型.配发区屏)
ServiceCloud.Devices.Led.EQ2008.LedController.Register(CardType.EQ2023, ScreenColorStyle.Multicolor, 64, 384, screen.ip, 5005);
}
ServiceCloud.Devices.Led.EQ2008.LedController.Initialize();View Code
在生成控制卡的通信配置文件以后再程序里面（如下图）
通过点击开始连接按钮（按钮事件如下）
private void OpenConnect()
{
try
{
var index = 0;
var screenNumbers = GetCheckValues(false);
if (screenNumbers.Count <= 0)
{
MessageBoard.Error(this, "请先勾选您所要操作的LED屏");
return;
}
foreach (var screenNumber in screenNumbers)
{
var screenModel = DataSetCache.Screens.FirstOrDefault(o => o.number == screenNumber);
var ledBasics = DataSetCache.LedBasics.FirstOrDefault(o => o.ScreenModel.ip == screenModel.ip);
if (ledBasics.ScreenState == EnumScreenState.Open)
continue;
if (!ledBasics.ScreenModel.ip.PingIp())
{
var message = string.Format("{0}-启动失败！可能原因：未找到当前屏幕的通信地址，请检查当前屏幕网络通信。", ledBasics.ScreenModel.name);
MSGLSBOX(message);
Logger.Error(message);
continue;
}
var controller = ServiceCloud.Devices.Led.EQ2008.LedController.GetFromIP(ledBasics.ScreenModel.ip);
if (controller == null)
{
var message = string.Format("{0}-启动失败！可能原因：屏幕初始化失败。", ledBasics.ScreenModel.name);
MSGLSBOX(message);
Logger.Error(message);
continue;
}
else if (!controller.Open())
{
var message = string.Format("{0}-启动失败！可能原因：屏幕打开失败。", ledBasics.ScreenModel.name);
MSGLSBOX(message);
Logger.Error(message);
continue;
}
else
{
ledBasics.ScreenState = EnumScreenState.Open;
if (ledBasics.ScreenModel.screenType == Setting.屏幕类型.主控屏)
{
ledBasics.LedThread = new Thread(new ParameterizedThreadStart(LedMainDrive));
ledBasics.LedThread.Start(ledBasics);
}
else if (ledBasics.ScreenModel.screenType == Setting.屏幕类型.分装区屏)
{
ledBasics.LedThread = new Thread(new ParameterizedThreadStart(LedPackingDrive));
ledBasics.LedThread.Start(ledBasics);
}
else if (ledBasics.ScreenModel.screenType == Setting.屏幕类型.配发区屏)
{
if (index == 0)
ledBasics.LedThread = new Thread(new ParameterizedThreadStart(LedDistributionDriveN4_1));
if (index == 1)
ledBasics.LedThread = new Thread(new ParameterizedThreadStart(LedDistributionDriveN4_2));
if (index == 2)
ledBasics.LedThread = new Thread(new ParameterizedThreadStart(LedDistributionDriveN4_3));
index++;
ledBasics.LedThread.Start(ledBasics);
}
else
MessageBoard.Error(this, string.Format("未识别{0}的屏幕类型", ledBasics.ScreenModel.name));
}
}
RefreshScreenList();
}
catch
{
throw;
}
}View Code
通过点击断开连接按钮（按钮事件如下）
private void CloseConnect()
{
try
{
var screenNumbers = GetCheckValues(false);
if (screenNumbers.Count <= 0)
{
MessageBoard.Error(this, "请先勾选所要操作的LED屏");
return;
}
foreach (var screenNumber in screenNumbers)
{
var screenModel = DataSetCache.Screens.FirstOrDefault(o => o.number == screenNumber);
var ledBasics = DataSetCache.LedBasics.FirstOrDefault(o => o.ScreenModel == screenModel);
var controller = ServiceCloud.Devices.Led.EQ2008.LedController.GetFromIP(ledBasics.ScreenModel.ip);
if (controller.Close())
{
if (ledBasics.LedThread != null)
{
Thread.Sleep(1000);
ledBasics.LedThread.Abort();
ledBasics.LedThread.Join();
}
ledBasics.ScreenState = EnumScreenState.Close;
RefreshScreenList();
MessageBoard.Info(this, "已成功关闭连接！");
}
else
MSGLSBOX(string.Format("{0} 连接关闭失败。", ledBasics.ScreenModel.name));
}
}
catch
{
throw;
}
}View Code
因为当前项目需要控制多个LED屏幕，所以此处采取独立线程去分别控制显示，以下是一个线程内的控制通信的代码
public void LedPackingDrive(object source)
{
while (true)
{
try
{
var ledBasics = source as LedBasics;
var packingScreenTwoSwitchingTime = Sys_SystemInfoManager.packingScreenTwoSwitchingTime * 2;
var packingScreenOneSwitchingTime = Sys_SystemInfoManager.packingScreenOneSwitchingTime * 2;
this.LedControllerForPackingBasic = ServiceCloud.Devices.Led.EQ2008.LedController.GetFromIP(ledBasics.ScreenModel.ip);
this.LedControllerForPacking = new LedController.LedControllerForPacking(this.LedControllerForPackingBasic);
if (indexForPacking <= packingScreenTwoSwitchingTime)
SendToPackingLed(ledBasics, false);
else if (indexForPacking > packingScreenTwoSwitchingTime &&
indexForPacking < packingScreenTwoSwitchingTime + packingScreenOneSwitchingTime)
SendToPackingLed(ledBasics, true);
else if (indexForPacking >= packingScreenTwoSwitchingTime + packingScreenOneSwitchingTime)
{
indexForPacking = 0;
continue;
}
indexForPacking++;
Thread.Sleep(500);
}
catch (System.Exception ex)
{
Logger.Error(ex);
}
}
}
private void SendToPackingLed(LedBasics ledBasics, bool isSecondPages)
{
try
{
var dataItem = new LedController.LedControllerForPacking.ScreenDataItemForPacking();
List<Obj_TaskManager> tasksForLackMaterial;
var tasksForAll = ledBasics.Tasks;
tasksForLackMaterial = (from task in tasksForAll
where (task.taskState == Setting.作业状态.待执行 || task.taskState == Setting.作业状态.分拣中) &&
task.completeKit == Setting.齐套状态.缺料
select task).OrderBy(o => o.sequence).ToList();
if (tasksForLackMaterial.Count > 0)
{
dataItem.WorkNumber1 = tasksForLackMaterial[0].workNumber;
dataItem.Line1 = tasksForLackMaterial[0].line;
dataItem.WorkNumber2 = tasksForLackMaterial.Count > 1 ? tasksForLackMaterial[1].workNumber : "No Task";
dataItem.Line2 = tasksForLackMaterial.Count > 1 ? tasksForLackMaterial[1].line : "No Task";
var currentTaskChildMaterialCount1 = tasksForLackMaterial[0].CurrentTaskChildMaterialCount.Select(o => string.Format("{0}{1}", RemoveMaterialMemoEnglish(o.childMaterialMemo), o.childMaterialCount)).ToArray().Join(",");
if (scroll_Packing1 >= currentTaskChildMaterialCount1.Length)
{ dataItem.ScrollContent1 = currentTaskChildMaterialCount1; scroll_Packing1 = 0; }
else
{ dataItem.ScrollContent1 = currentTaskChildMaterialCount1.Substring(scroll_Packing1, currentTaskChildMaterialCount1.Length - scroll_Packing1); scroll_Packing1++; }
if (tasksForLackMaterial.Count > 1)
{
var currentTaskChildMaterialCount2 = tasksForLackMaterial[1].CurrentTaskChildMaterialCount.Select(o => string.Format("{0}{1}", RemoveMaterialMemoEnglish(o.childMaterialMemo), o.childMaterialCount)).ToArray().Join(",");
if (scroll_Packing2 >= currentTaskChildMaterialCount2.Length)
{ dataItem.ScrollContent2 = currentTaskChildMaterialCount2; scroll_Packing2 = 0; }
else
{ dataItem.ScrollContent2 = currentTaskChildMaterialCount2.Substring(scroll_Packing2, currentTaskChildMaterialCount2.Length - scroll_Packing2); scroll_Packing2 = scroll_Packing2 + 2; }
}
if (isSecondPages)
this.LedControllerForPacking.SendToScreen(dataItem, EnumScreenPackingType.ScreenDataForScrollContent);
else
this.LedControllerForPacking.SendToScreen(dataItem, EnumScreenPackingType.ScreenImageForTask);
}
else
this.LedControllerForPacking.SendToScreen(dataItem, EnumScreenPackingType.ScreenImageForNoTask);
}
catch
{
throw;
}
}View Code
其中
this.LedControllerForPacking.SendToScreen(dataItem, EnumScreenPackingType.ScreenImageForNoTask);就是往控制卡（屏幕）中发送数据。此处只是简单的介绍下开发包的使用，以及简单设计。
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