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这篇文章涉及较多C#重要知识点，如果都能看懂，你至少可以算得上入门了！有兴趣的同志可以下载源码调试.
开始吧：
-》指令格式介绍
激光测距模块
UDP: 192.168.1.200 8008发往8010；192.168.1.201 8008发往8011；
协议：C3 00为195cm
光电开关模块
UDP：192.168.1.202 8008发往8012
帧头59 59
数据 01 01 01 01 为4个光电开关状态，依次为安检通道入口光电开关、安检门光电开关1、安检门光电开关2，安检通道出口光电开关。其中1为无人遮挡状态，0为有人遮挡状态
填充 44 55 66 77 88 99 00 12 23 34 45 56 67 ee
4个光电开关均无人
1、2、3光电开关有人 4光电开关无人
开发软硬件环境：
硬件：1. 4路光电开关，4路测距雷达，数据通过udp发送到主机192.168.1.119
软件：1. vs2017 win10
-》重要知识点：
1. 多线程操作：thread和task的使用
2. winform的chart控件使用
3.队列Queue和list使用
4.双缓冲用法
5.定时器操作
6.线程中操作主窗体控件：
this.Invoke((EventHandler)delegate
{
richTextBoxEx1.Text = stringData "rn";
}):
7.通过循环的方式遍历操作控件
8.数据类型转换：
Byte[] recv = client.Receive(ref endpoint);
string stringData = "0x" BitConverter.ToString(recv).Replace("-", " 0x").ToLower();
-》开发难点：
1. chart需要绘制所有采集上来的数据点，光电开关1毫秒就一组数据，绘图时间得跟得上
2. 多线程的灵活使用
全部代码：
代码语言：javascript复制using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Windows.Forms.DataVisualization.Charting;
namespace lidarTest
{
public partial class mainForm : DevComponents.DotNetBar.Office2007Form
{
public mainForm()
{
this.DoubleBuffered = true;//设置本窗体
SetStyle(ControlStyles.UserPaint, true);
SetStyle(ControlStyles.AllPaintingInWmPaint, true); // 禁止擦除背景.
SetStyle(ControlStyles.DoubleBuffer, true); // 双缓冲
this.EnableGlass = false;
InitializeComponent();
InitChart();
checkBox2.Checked = false;
checkBox1.Checked = false;
}
private Queue<int>[] dataQueue = new Queue<int>[8];//把Queue<double>看成一个类型 int[] a=new int [8]
private List<int>[] dataList = new List<int>[8];
private Queue<string> dQueue = new Queue<string>();
bool isStart = false;
int count = 0;
private static readonly object Lock = new object();
Stopwatch elapsetime = new Stopwatch();
private void mainForm_Load(object sender, EventArgs e)
{
dataQueue[0] = new Queue<int>();
dataQueue[1] = new Queue<int>();
dataQueue[2] = new Queue<int>();
dataQueue[3] = new Queue<int>();
dataQueue[4] = new Queue<int>();
dataQueue[5] = new Queue<int>();
dataQueue[6] = new Queue<int>();
dataQueue[7] = new Queue<int>();
dataList[0] = new List<int>();
dataList[1] = new List<int>();
dataList[2] = new List<int>();
dataList[3] = new List<int>();
dataList[4] = new List<int>();
dataList[5] = new List<int>();
dataList[6] = new List<int>();
dataList[7] = new List<int>();
this.WindowState = FormWindowState.Normal;
this.FormBorderStyle = FormBorderStyle.Sizable;
this.Top = 0;
this.Left = 0;
this.Width = Screen.PrimaryScreen.WorkingArea.Width;
this.Height = Screen.PrimaryScreen.WorkingArea.Height;
Start();
//MessageBox.Show( DateTime.Now.ToString("yyyy_MM_dd_hh_mm_ss_fff"));
}
// 防止闪屏
//protected override CreateParams CreateParams
//{
// get
// {
// CreateParams cp = base.CreateParams;
// cp.ExStyle |= 0x02000000;
// return cp;
// }
//}
public void Start()
{
Thread t1 = new Thread(StartDataRevThread1); //第一路激光雷达数据接收线程
t1.Start();
t1.IsBackground = true;
Thread t2 = new Thread(StartDataRevThread2); //第二路激光雷达数据接收线程
t2.Start();
t2.IsBackground = true;
Thread t3 = new Thread(StartDataRevThread3);//第三路激光雷达数据接收线程
t3.Start();
t3.IsBackground = true;
Thread t4 = new Thread(StartDataRevThread4);////第四路激光雷达数据接收线程
t4.Start();
t4.IsBackground = true;
Thread t5 = new Thread(StartDataRevThread5);//四个广电开关数据接受线程
t5.Start();
t5.IsBackground = true;
Thread t6 = new Thread(dataSaveThread6);//数据写入线程
t6.Start();
t6.IsBackground = true;
}
private void StartDataRevThread1()
{
try
{
UdpClient client = new UdpClient(8021);
//IPEndPoint endpoint = new IPEndPoint(IPAddress.Any, 0);//
IPEndPoint endpoint = new IPEndPoint(IPAddress.Parse("192.168.1.30"), 8008);
//client.Client.ReceiveBufferSize = 40960;//40960 默认值是8192
while (true)
{
Byte[] recv = client.Receive(ref endpoint);
string stringData = "0x" BitConverter.ToString(recv).Replace("-", " 0x").ToLower();
this.Invoke((EventHandler)delegate
{
//richTextBoxEx1.Text = stringData "rn";
chartShow( recv[2] (recv[3]<<8),1);
}
);
}
}
catch(Exception ex)
{
MessageBox.Show(ex.Message "n" ex.StackTrace) ;
}
}
private void StartDataRevThread2()
{
try
{
UdpClient client = new UdpClient(8022);
IPEndPoint endpoint = new IPEndPoint(IPAddress.Parse("192.168.1.40"), 8008);
while (true)
{
Byte[] recv = client.Receive(ref endpoint);
string stringData = "0x" BitConverter.ToString(recv).Replace("-", " 0x").ToLower();
this.Invoke((EventHandler)delegate
{
//richTextBoxEx2.Text = stringData "rn";
chartShow(recv[2] (recv[3] << 8),2);
}
);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message "n" ex.StackTrace);
}
}
private void StartDataRevThread3()
{
try
{
UdpClient client = new UdpClient(8023);
IPEndPoint endpoint = new IPEndPoint(IPAddress.Parse("192.168.1.100"), 8008);
while (true)
{
Byte[] recv = client.Receive(ref endpoint);
string stringData = "0x" BitConverter.ToString(recv).Replace("-", " 0x").ToLower();
this.Invoke((EventHandler)delegate
{
//richTextBoxEx3.Text = stringData "rn";
chartShow( recv[2] (recv[3] << 8),3);
}
);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message "n" ex.StackTrace);
}
}
private void StartDataRevThread4()
{
try
{
UdpClient client = new UdpClient(8024);
IPEndPoint endpoint = new IPEndPoint(IPAddress.Parse("192.168.1.200"), 8008);
while (true)
{
Byte[] recv = client.Receive(ref endpoint);
string stringData = "0x" BitConverter.ToString(recv).Replace("-", " 0x").ToLower();
this.Invoke((EventHandler)delegate
{
//richTextBoxEx4.Text = stringData "rn";
chartShow( recv[2] (recv[3] << 8),4);
}
);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message "n" ex.StackTrace);
}
}
private void StartDataRevThread5()
{
try
{
UdpClient client = new UdpClient(8012);
IPEndPoint endpoint = new IPEndPoint(IPAddress.Parse("192.168.1.202"), 8008);
client.Client.ReceiveBufferSize = 1024*1024;//默认值是8192
while (true)
{
Byte[] recv = client.Receive(ref endpoint);
elapsetime.Restart();//计时开始
this.Invoke((EventHandler)delegate
{
//if (count >= 100)
{
count = 0;
Task.Run(() =>
{
chartShow(recv[2], 5);
}
);
Task.Run(() =>
{
chartShow(recv[3], 6);
}
);
Task.Run(() =>
{
chartShow(recv[4], 7);
}
);
Task.Run(() =>
{
chartShow(recv[5], 8);
}
);
//chartShow(recv[2], 5);
//chartShow(recv[3], 6);
//chartShow(recv[4], 7);
//chartShow(recv[5], 8);
if (checkBox2.Checked == true)
{
string stringData = "0x" BitConverter.ToString(recv).Replace("-", " 0x").ToLower();
dQueue.Enqueue(DateTime.Now.ToString("yyyy-MM-dd_HH:mm:ss:fff") " " stringData);
}
}
count ;
} );
elapsetime.Stop();//计时结束
this.Invoke((EventHandler)delegate
{
label1.Text = "接收数据耗时：" elapsetime.ElapsedMilliseconds.ToString("0000");
});
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message "n" ex.StackTrace);
}
}
private void dataSaveThread6()
{
while (true)
{
if (checkBox2.Checked == true)
{
String LogPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Log");
if (dQueue.Count() > 0)
strWrite(dQueue.Dequeue(), LogPath, "log.txt");
}
}
}
private void InitChart()
{
Chart[] ch = new Chart[12] { chart1, chart2, chart3, chart4,chart5, chart6, chart7, chart8 , chart_1, chart_2, chart_3, chart_4 };
for (int i = 0; i < 4 ; i )
{
ch[i].ChartAreas.Clear();
ChartArea chartArea1 = new ChartArea("C1");
ch[i].ChartAreas.Add(chartArea1);
//定义存储和显示点的容器
ch[i].Series.Clear();
Series series1 = new Series("S1");
series1.ChartArea = "C1";
ch[i].Series.Add(series1);
ch[i].ChartAreas[0].AxisY.IsStartedFromZero = false;
ch[i].Legends[0].Enabled = false;
ch[i].ChartAreas[0].AxisX.Interval = 100;
ch[i].ChartAreas[0].AxisX.Maximum = 1000;
//ch[i].ChartAreas[0].AxisX.ScaleView.Size = 8;//设置图表可视区域数据点数，说白了一次可以看到多少个X轴区域
ch[i].ChartAreas[0].Axes[0].MajorGrid.Enabled = false;
ch[i].ChartAreas[0].Axes[1].MajorGrid.Enabled = false;
//y轴上网格
//ct.ChartAreas[0].Axes[1].MajorGrid.Enabled = false;
//ch[i].ChartAreas[0].AxisX.IsStartedFromZero = false;
//ch[i].ChartAreas[0].AxisX.MajorGrid.LineColor = System.Drawing.Color.Silver;
//ch[i].ChartAreas[0].AxisY.MajorGrid.LineColor = System.Drawing.Color.Silver;
//设置标题
ch[i].Titles.Clear();
//ch[i].Titles.Add("S01");
//ch[i].Titles[0].Text = "通道" (i 1) " 折线图显示";
//ch[i].Titles[0].ForeColor = Color.RoyalBlue;
//ch[i].Titles[0].Font = new System.Drawing.Font("Microsoft Sans Serif", 12F);
//设置图表显示样式
ch[i].Series[0].Color = Color.Red;
//this.chart1.Titles[0].Text = string.Format("{0}折线图显示", );
ch[i].Series[0].ChartType = SeriesChartType.FastLine;
ch[i].Series[0].Points.Clear();
}
for (int i = 4; i < 12; i )
{
ch[i].ChartAreas.Clear();
ChartArea chartArea1 = new ChartArea("C1");
ch[i].ChartAreas.Add(chartArea1);
//定义存储和显示点的容器
ch[i].Series.Clear();
Series series1 = new Series("S1");
series1.ChartArea = "C1";
ch[i].Series.Add(series1);
ch[i].ChartAreas[0].AxisY.IsStartedFromZero = false;
ch[i].Legends[0].Enabled = false;
//ch[i].ChartAreas[0].AxisX.Interval = 100;
//ch[i].ChartAreas[0].AxisX.Maximum = 10000;
//ch[i].ChartAreas[0].AxisX.ScaleView.Size = 8;//设置图表可视区域数据点数，说白了一次可以看到多少个X轴区域
ch[i].ChartAreas[0].Axes[0].MajorGrid.Enabled = false;
ch[i].ChartAreas[0].Axes[1].MajorGrid.Enabled = false;
//y轴上网格
//ct.ChartAreas[0].Axes[1].MajorGrid.Enabled = false;
//ch[i].ChartAreas[0].AxisX.IsStartedFromZero = false;
//ch[i].ChartAreas[0].AxisX.MajorGrid.LineColor = System.Drawing.Color.Silver;
//ch[i].ChartAreas[0].AxisY.MajorGrid.LineColor = System.Drawing.Color.Silver;
//设置标题
ch[i].Titles.Clear();
//ch[i].Titles.Add("S01");
//ch[i].Titles[0].Text = "通道" (i 1) " 折线图显示";
//ch[i].Titles[0].ForeColor = Color.RoyalBlue;
//ch[i].Titles[0].Font = new System.Drawing.Font("Microsoft Sans Serif", 12F);
//设置图表显示样式
ch[i].Series[0].Color = Color.Red;
//this.chart1.Titles[0].Text = string.Format("{0}折线图显示", );
ch[i].Series[0].ChartType = SeriesChartType.FastLine;
ch[i].Series[0].Points.Clear();
}
}
public void chartShow(int y, int ch)
{
Chart[] chNum = new Chart[8] { chart_1, chart_2, chart_3, chart_4, chart5, chart6, chart7, chart8 };
if (ch <= 8)
chartDisplay(chNum[ch - 1], ch, y);
}
delegate void ChartDelegate(Chart chart, int ch, int y);
private void chartDisplay(Chart chart, int ch, int y)
{
if (chart.InvokeRequired)
{
ChartDelegate chartDelegate = chartDisplay;
chart.Invoke(chartDelegate, new object[] { chart, ch, y });
}
else
{
lock (Lock)
{
if (isStart == true)
UpdateQueueValue(ch, y);//点击开启按钮后，开始采集收集数据，并更新到队列或列表中
}
}
}
private void UpdateQueueValue(int ch, int y)
{
lock (Lock)
{
if (dataQueue[ch - 1].Count > 1000)
//先出列
dataQueue[ch - 1].Dequeue();
dataQueue[ch - 1].Enqueue(y);
//方法二 用list
//if (dataList[ch - 1].Count > 20000)
// dataList[ch - 1].RemoveAt(0);
//dataList[ch - 1-4].Add(2);
dataList[ch - 1].Add(y);
}
}
private void btnStart_Click(object sender, EventArgs e)
{
if (!isStart)
{
dataQueue[0] = new Queue<int>();
dataQueue[1] = new Queue<int>();
dataQueue[2] = new Queue<int>();
dataQueue[3] = new Queue<int>();
dataQueue[4] = new Queue<int>();
dataQueue[5] = new Queue<int>();
dataQueue[6] = new Queue<int>();
dataQueue[7] = new Queue<int>();
dataList[0] = new List<int>();
dataList[1] = new List<int>();
dataList[2] = new List<int>();
dataList[3] = new List<int>();
dataList[4] = new List<int>();
dataList[5] = new List<int>();
dataList[6] = new List<int>();
dataList[7] = new List<int>();
chart_1.Series[0].Points.Clear();
chart_2.Series[0].Points.Clear();
chart_3.Series[0].Points.Clear();
chart_4.Series[0].Points.Clear();
chart5.Series[0].Points.Clear();
chart6.Series[0].Points.Clear();
chart7.Series[0].Points.Clear();
chart8.Series[0].Points.Clear();
btnStart.Text = @"停止采集";
btnStart.DisabledImage = btnStart.Image;
btnStart.Image = (Image)btnStart.PressedImage.Clone();
isStart = !isStart;
}
else
{
btnStart.Text = @"开始采集";
btnStart.Image = btnStart.DisabledImage;
isStart = !isStart;
}
}
/*************文件写入函数**************/
private void strWrite(string str, string filePath, string fileName)
{
lock (Lock)
{
if (!Directory.Exists(filePath))
Directory.CreateDirectory(filePath);
if (!File.Exists(filePath "\" fileName))
File.Create(filePath "\" fileName).Close(); //.Close 很关键，不然会有问题
StreamWriter sw = new StreamWriter(filePath "\" fileName, true);//true 追加数据
sw.WriteLine(str);
sw.Close();
}
}
/*************chart图片保存函数**************/
private void imageSave( Chart chart, string filePath, string fileName)
{
lock (Lock)
{
if (!Directory.Exists(filePath))
Directory.CreateDirectory(filePath);
chart.SaveImage(filePath "\" fileName, ChartImageFormat.Png);
}
}
/*************定时器中更新chart**************/
private void timer1_Tick(object sender, EventArgs e)
{
Chart[] ch = new Chart[8] { chart1, chart2, chart3, chart4, chart5, chart6, chart7, chart8 };
Chart[] cha = new Chart[4] { chart_1, chart_2, chart_3, chart_4 };
string[] str = new string[8] { "chart1", "chart2", "chart3", "chart4", "chart5", "chart6", "chart7", "chart8" };
string[] stri = new string[4] { "chart_1", "chart_2", "chart_3", "chart_4", };
Label[] lb = new Label[4] { label2, label3, label4, label5 };
for (int j = 4; j < 8; j )
{
Stopwatch sw = new Stopwatch();
var k = j;//参数需要传入task中，不然j一直是7
Task.Run(() =>
{
sw.Start();
this.Invoke((EventHandler)delegate
{
//chart5.Series[0].Points.Clear();
for (int i = 0; i < dataList[k].Count; i )
ch[k].Series[0].Points.AddY(dataList[k][i]);//光电开关波形图-所有点
dataList[k].Clear();
ch[k-4].Series[0].Points.Clear();
for (int i = 0; i < dataQueue[k].Count; i )
ch[k - 4].Series[0].Points.AddY(dataQueue[k].ElementAt(i));//光电开关波形图-最近1000个点
for (int i = 0; i < dataList[k-4].Count; i )
cha[k - 4].Series[0].Points.AddY(dataList[k-4][i]);//激光测距雷达波形图--所有点
dataList[k-4].Clear();
if (checkBox1.Checked == true)
{
//保存曲线图片
String imagePath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "image//" str[k]);
imageSave(ch[k], imagePath, DateTime.Now.ToString("yyyy_MM_dd_hh_mm_ss_fff") ".png");
}
sw.Stop();
lb[k - 4].Text = sw.ElapsedMilliseconds.ToString(str[k] "耗时：" "0000");//记录chart绘制的好事呢
});
});
}
}
}
}
运行结果：
项目源码下载地址：
链接：https://pan.baidu.com/s/1QfoIVNarj-rgK449JM40yQ
提取码：v2nu
------------------------------------------------------------------------
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