[Tex/LaTex] How to draw a block diagram using TikZ

tikz-arrowstikz-pgf

I would like to draw a block diagram such as this using TikZ. I am unable to find arrow heads / suitable tutorials for block diagrams.

block diagram

Best Answer

Two possible solutions. First simple one:

\documentclass[tikz,border=2mm]{standalone}
    \usetikzlibrary{arrows.meta,calc,positioning}

    \begin{document}
\begin{tikzpicture}[
node distance= 9mm and 3 mm,
inout/.style = {minimum width=#1,
                draw, thick, rounded corners, 
                minimum height=9mm, align=center},
inter/.style = {minimum width=#1,
                draw, thick, minimum height=9mm,
                font=\Large\bfseries},
Arrow/.style = {line width=2mm, draw=gray, 
                -{Triangle[length=3mm,width=4mm]},
                shorten >=1mm, shorten <=1mm},
                    ]
\node[inout=22mm]               (a)   {property};
\node[inout=22mm,right=of a]    (b)   {automaton\\ model};
\path   let \p1 = (a.west),
            \p2 = (b.east),
            \n1 = {veclen(\x2-\x1,\y2-\y1)} in 
        node[inter=\n1,
             below right=9mm and 0mm of a.south west] (c) {Intersection}
        node[inout=\n1,below=of c] (d) {empty language\\ 
                                        (property sastified)};
\draw[Arrow]    (a) -- (a |- c.north);
\draw[Arrow]    (b) -- (b |- c.north);
\draw[Arrow]    (c) -- (d);
\end{tikzpicture}
    \end{document}

enter image description here

and more fancy one with arrows determined with arrows shape:

\documentclass[tikz,border=2mm]{standalone}
    \usetikzlibrary{arrows.meta,calc,positioning,
                    shapes.arrows}

    \begin{document}
\begin{tikzpicture}[
node distance= 9mm and 3 mm,
inout/.style = {minimum width=#1,
                draw, thick, rounded corners, 
                minimum height=9mm, align=center},
inter/.style = {minimum width=#1,
                draw, thick, minimum height=9mm,
                font=\Large\bfseries},
Arrow/.style = {single arrow,draw,
                minimum height=7mm, minimum width=3mm,
                rotate=-90},             
                    ]
\node[inout=22mm]               (a)   {property};
\node[inout=22mm,right=of a]    (b)   {automaton\\ model};
\path   let \p1 = (a.west),
            \p2 = (b.east),
            \n1 = {veclen(\x2-\x1,\y2-\y1)} in 
        node[inter=\n1,
             below right=9mm and 0mm of a.south west] (c) {Intersection}
        node[inout=\n1,below=of c] (d) {empty language\\ 
                                        (property sastified)};
\node[Arrow]  at ($(a)!0.65!(a |- c.north)$) {};
\node[Arrow]  at ($(b)!0.65!(b |- c.north)$) {};
\node[Arrow]  at ($(c)!0.65!(d.north)$) {};
\end{tikzpicture}
    \end{document}

enter image description here

Related Solutions

[Tex/LaTex] How to draw communication based diagram in tikz

Here you have a possible solution. Tikz is so flexible that you will find some more. What I've done is first draw the vertical lines and use them to place nodes on the left and right side. In fact I've drawn first arrow and name starting and finishing coordinates a and b. Paquet nodes are placed relative to a and b. Hope you could understand the code.

If your red beam means a broken link or some transmission problem I prefer to use some symbol over the link. In this example I've used a cross out node.

\documentclass[border=2mm]{standalone}
\usepackage{tikz}
\usetikzlibrary{shapes,arrows,fit,calc,positioning}
\usepackage{scalefnt}

\begin{document}

\begin{tikzpicture}
[my shape/.style={rectangle split, rectangle split parts=#1, draw}]
\tikzset{input/.style={}}

\draw (0,0)--++(0,-10cm);
\draw (4,0)--++(0,-10cm);

\draw[->] (0,-.5) coordinate (a) -- 
node [near end,sloped, above=2mm,my shape=2, rectangle split horizontal] (n3) {0\nodepart{two}$m_0$}
++(4,-.5) coordinate (b);

\node [left =1mm of a,my shape=2, rectangle split horizontal] (n1) {0\nodepart{two}$m_0$};

\node [right=1mm of b, my shape=2, rectangle split horizontal] (n2)  {0\nodepart{two}$m_0$};

\draw[->,red] (b) -- ++(-4,-.5);

\path (a)--node[cross out,draw=red]{} (b);

\end{tikzpicture}

\end{document}

enter image description here

[Tex/LaTex] How to Draw This Free Body Diagram on TikZ or PGFPlots

\documentclass[11pt]{article}

\usepackage{tikz}

\begin{document}
  \begin{tikzpicture}
     \begin{scope}
      \draw[<-] (0,0) -- node[right]{$W_{m}$}(0,2)
                node[circle,fill,inner sep=3mm,text=white,anchor=south] (m) {$m$};
      \draw (m.north) -- node[right]{$T \uparrow$} +(0,2);
     \end{scope}
     \begin{scope}[shift={(2cm,-8mm)}]
      \draw[<-] (0,0) -- node[right]{$W_{2m}$}(0,2)
                node[circle,fill,inner sep=6mm,text=white,anchor=south] (m) {$m$};
      \draw (m.north) -- node[right]{$T \uparrow$} +(0,2);
     \end{scope}
  \end{tikzpicture}
\end{document}

enter image description here

Explanations:

scope forms a group around its contents so that we can perform operations (like shift) on the entire group. Every node's contents are separated from the border by inner sep (In other words, the distance between the contents and the border). By adjusting inner sep we can make the node bigger or smaller (so as to just enclose the contents). We can label a node by (m) so that we can use that node's anchors (for ex, m.north) later whereas {m} is the content of the node. And finally (m.north) -- +(0,2) means draw a line fron m.north to a point that is 0cm away horizontally and 2cm away vertically.

Best Answer

Related Solutions

[Tex/LaTex] How to draw communication based diagram in tikz

[Tex/LaTex] How to Draw This Free Body Diagram on TikZ or PGFPlots

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