2.5 C#视觉程序开发实例1----IO_Manager实现脉冲输出控制
1 目标效果视频
目标效果展示
IO_Manager
2 信号输出流程说明
为了防止线程不同步导致输出信号没有被输出， 尽量使用一个输出队列来进行输出的管理
3 IO_Manager中添加内容
3.0 添加两个类
1 Out_State :输出状态标志
public enum Out_State : int
{
State_Out = 1,// 输出状态
State_Reset = 2,// 复位状态
State_Wait = 0,//wait
}
2 Task_Out_Server 输出管理类，实现了输出请求队列的管理
/// <summary>
/// Task_IO_Out_Server
/// </summary>
public class Task_Out_Server
{
// 最大缓存 buffer个数
static int max_buffer = 16;
public Out_State state;
public List<bool> out_requests;
private int index_ok;
private int index_ng;
private int index_sto;
private int out_pulse_width;// 输出脉冲宽度
private int reset_pulse_width;// 输出复位脉冲宽度
private DateTime cur_starttime;// 当前task 开始时间
public object mutex;
private int count_output;
private int count_reset;
private int count_wait;
private int output_mode = 0;//0: pulse 1: 开关亮输出
public int Tasks_Count
{
get { return out_requests.Count; }
}
public string Task_Info
{
get
{
return "outcount=" + count_output.ToString() + ",resetcount=" + count_reset.ToString() + ",waitcount=" + count_wait.ToString();
}
}
public Task_Out_Server()
{
state = Out_State.State_Wait;
out_requests = new List<bool>();
index_ok = -1;
index_ng = -1;
index_sto = -1;
out_pulse_width = 100;
reset_pulse_width = 10;
mutex = new object();
cur_starttime = DateTime.Now;
}
public void init_Task(int _index_ok, int _index_ng, int _index_sto, int out_pulse, int reset_pusle)
{
index_ok = _index_ok;
index_ng = _index_ng;
index_sto = _index_sto;
out_pulse_width = out_pulse;
reset_pulse_width = reset_pusle;
count_output = count_reset = count_reset = 0;
}
public void Add_One_Task(bool status)
{
lock (mutex)
{
if (out_requests.Count < max_buffer)
out_requests.Add(status);// 增加一个任务
}
}
public void Update_Task_State(DateTime cur_time, ref bool[] outstates)
{
if (outstates == null) return;
lock (mutex)
{
switch (state)
{
default://wait
if (out_requests.Count > 0)
{
bool _status = out_requests[0];
out_requests.RemoveAt(0);
state = Out_State.State_Out;
if (index_ok != -1)
outstates[index_ok] = _status;
if (index_ng != -1)
outstates[index_ng] = !_status;
if (index_sto != -1)
outstates[index_sto] = true;
cur_starttime = cur_time;
count_output++;
}
break;
case Out_State.State_Out:// 输出
if (cur_time.Subtract(cur_starttime).TotalMilliseconds >= out_pulse_width)
{
//sto 复位
if (index_sto != -1)
outstates[index_sto] = false;
if (output_mode == 0)// pulse输出
{
if (index_ok != -1)
outstates[index_ok] = false;
if (index_ng != -1)
outstates[index_ng] = false;
}
state = Out_State.State_Reset;
count_reset++;
}
break;
case Out_State.State_Reset://reset
if (cur_time.Subtract(cur_starttime).TotalMilliseconds >= out_pulse_width + reset_pulse_width)
{
state = Out_State.State_Wait;
count_wait++;
}
break;
}
}
}
}
3.1 增加代码 初始化Task_Out_Server
增加Task_Out_Server 实例
#region Task_IO_Server 用来管理STO|OK|NG 输出
public Task_Out_Server task_out_server_thread0 =new Task_Out_Server();
private int pulse_width = 300;// 脉冲输出时长
private int pulse_reset_width = 100;// 脉冲复位时长
#endregion
IO_Manager()初始化函数中增加Init_Task()
目的： 绑定输出STO|OK|NG pin角，然后脉冲输出宽度和复位宽度
//初始化 task_out_server_thread0，
task_out_server_thread0.init_Task(index_ok,index_ng,index_sto, pulse_width, pulse_reset_width);
3.2 Write()函数更新
//更新STO |OK|NG输出 status
task_out_server_thread0.Update_Task_State(cur,ref Outputs);
public int Write()
{
int nRet = 0;
DateTime cur = DateTime.Now;
try
{
// DM8 Write
PInvoker.SetDM8(array_dm8_out, count_DM8, count_DM8);
for (int i = 0; i < count_DM8; i++)
{
if (Outputs[i]) array_dm8_out[i] = 1;
else array_dm8_out[i] = 0;
}
//更新STO |OK|NG输出 status
task_out_server_thread0.Update_Task_State(cur,ref Outputs);
GC.KeepAlive(array_dm8_out);
}
catch (Exception ex)
{
nRet = -2;
}
return nRet;
}
4 Form_vision中增加代码
4.1 添加一个线程统计的类
实现线程结果的统计，和保存
/// <summary>
/// thread_statistics
/// 线程结果统计
/// </summary>
public class Thread_Statistics
{
public int count_ok;//当前线程ok 计数
public int count_ng;//当前线程ng 计数
public int count_total;//当前线程Total 计数
public bool status;// 当前线程状态
public Thread_Statistics()
{
count_ok = 0; count_ng = 0; count_total = 0;
status = true;
}
public void Reset()
{
count_ok = 0; count_ng = 0; count_total = 0;
status = true;
}
public string toString()
{
string str = "";
str = "总数:" + count_total.ToString() + ",OK:" + count_ok.ToString() + ",NG:" + count_ng.ToString();
return str;
}
/// <summary>
/// Update_Statistics
/// </summary>
/// <param name="status"></param>
public void Update_Statistics(bool status)
{
if (status) count_ok += 1;
else count_ng += 1;
count_total += 1;
}
}
4.2 mgAcqRunCCD0 中增加采集事件
触发事件发生后，通知Img_Process现成， newImgEvent_thread.Set()
// 通过判断上升沿进行 相机采集
n_trig0_cur =Convert.ToInt32( ContextManager.get_IOCtx().get_Trig0());
if (n_trig0_cur > 0 && n_trig0_last == 0) //判断上升沿触发
{
//相机采集
int nRet = 0;
if(nRet==0)
{
newImgEvent_thread.Set();
}
}
4.3 Img_Process线程增加相应的功能代码
1.Create_Thread（）中 创建线程 ImgProcess
//创建ImgProcess 现成0
threadProcessCCD=new Task(() => ImgProcessCCD(), TaskCreationOptions.LongRunning);
threadProcessCCD.Start();
- ImgProcessCCD(int n_thread_index = 0) 函数增加统计代码
// 添加线程统计信息
thead0_summary.Update_Statistics(status);
- ImgProcessCCD(int n_thread_index = 0) 函数增加显示统计结果
bdDisplay_Runsets1.Update_Cam_Text(status, thead0_summary.toString());
- ImgProcessCCD(int n_thread_index = 0) 函数增加输出STO|OK|NG
// 输出脉冲
ContextManager.get_IOCtx().task_out_server_thread0.Add_One_Task(status);
ImgProcessCCD（）汇总
private void ImgProcessCCD(int n_thread_index = 0)
{
ListViewItem DATA = new ListViewItem();
DateTime ts3 = DateTime.Now;
bool[] flag = new bool[100];
DateTime current = DateTime.Now;
bool status = true;
while ( newImgEvent_thread.WaitOne()) //相机1&2都已经已拍照
{
// 添加线程统计信息
thead0_summary.Update_Statistics(status);
bdDisplay_Runsets1.Update_Cam_Text(status, thead0_summary.toString());
// 输出脉冲
ContextManager.get_IOCtx().task_out_server_thread0.Add_One_Task(status);
// img process
if (StopProgramEvent.WaitOne(0, true)) break;
} //end while
return;
}
