smartParking/project.html

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</head>
<body class="article">
<div id="header">
<h1>Smart &amp; Autonomous Parking</h1>
</div>
<div id="content">
<div id="preamble">
<div class="sectionbody">
<div class="paragraph">
<p><strong><em>Authors</em></strong></p>
</div>
<table class="tableblock frame-all grid-all stretch">
<colgroup>
<col style="width: 50%;">
<col style="width: 50%;">
</colgroup>
<tbody>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">Ουλής Ευάγγελος</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="mailto:cs151051@uniwa.gr">cs151051@uniwa.gr</a></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">Ουλής Νικόλαος</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="mailto:cs161079@uniwa.gr">cs161079@uniwa.gr</a></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">Κατσίμπρας Δρόσος</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="mailto:cs131110@uniwa.gr">cs131110@uniwa.gr</a></p></td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="sect1">
<h2 id="_smart_parking">1. Smart Parking</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Το "Smart Parking" Έξυπνο πάρκινγκ βασίζεται στη διαδικασία όπου η κατάσταση του πάρκινγκ κοινοποιείται
μέσω ενός συνόλου hardware και software στο διαδίκτυο και έτσι πετυχαίνουμε η κατάσταση του να είναι διαθέσιμη
"accesable" από το διαδίκτυο. Αυτό το χαρακτηριστικό κάνει αυτό το αντικειμένο μέρος του διαδικτύου και του κόσμου IoT.</p>
</div>
<div class="paragraph">
<p><strong>Η υλοποίηση του Smart Parking χωρίζεται σε 3 βασικά μέρη:</strong></p>
</div>
<div class="ulist">
<ul>
<li>
<p>Το 1<sub>ο</sub> μέρος αποτελείται από ένα σύνολο αισθητήρων που εγκαθιστούντε σε κάθε θέση parking (sensor), τα οποία αποτελούνται
από έναν αισθητήρα μέτρησης απόστασης (ultrasonic) και έναν μικροελεγκτή (Arduino Uno), έτσι ώστε να ανιχνεύει και να κωδικοποιεί
για μία συγκεκριμένη θέση έαν υπάρχει κάποιο όχημα ή όχι.</p>
</li>
<li>
<p>Το 2<sub>ο</sub> μέρος αποτελείται από την συσκευή gateway σε Raspberry Pi1, η οποία διαβάζει στη σειριακή του
τη πληροφορία από το Arduino Uno, που κάνει sense μία θέση parking, και στέλνει αυτή την πληροφορία
σε έναν web server με χρήση REST API.</p>
</li>
<li>
<p>To 3<sub>o</sub> μέρος αποτελείται από τον WEB Server ο οποίος αποτελείται από ένα process γραμμένο σε python που υλοποιεί
ένα REST API έτσι ώστε να μπορεί να αποθηκεύει την κατάσταση κάθε θέσης parking σε μία δομή λίστας με χαρακτηριστικό
κλειδί τον κωδικό κάθε θέσης parking.</p>
</li>
<li>
<p>Το 4<sub>o</sub> μέρος αποτελείται από την διεπαφή (Interface), με την οποία μέσω web σελίδας βλέπει κανείς την κατάσταση
του parking, δηλαδή πόσες και ποιές θέσεις μέσα στον χώρο είναι ελεύθερες.</p>
</li>
</ul>
</div>
<div class="sect2">
<h3 id="_parking_sensor_node">1.1. Parking Sensor Node</h3>
<div class="sect3">
<h4 id="_υλικά_κόμβου">1.1.1. Υλικά Κόμβου</h4>
<div class="ulist">
<ul>
<li>
<p>1 x Bread-Board</p>
</li>
<li>
<p>1 x Arduino Uno</p>
</li>
<li>
<p>1 x Red led</p>
</li>
<li>
<p>1 x Blue led</p>
</li>
<li>
<p>8 x links</p>
</li>
<li>
<p>1 x Ultrasonic Sensor</p>
</li>
</ul>
</div>
</div>
<div class="sect3">
<h4 id="_υλοποίηση_του_parking_sensor">1.1.2. Υλοποίηση του Parking Sensor</h4>
<div class="paragraph">
<p>Σε κάθε θέση parking υπάρχει ένας κόμβος απότελούμενος από ένα Arduino και έναν αισθητήρα
απόστασης (ultrasonic) εγκατεστημένος πάνω στο Arduino. Η λειτουργία αυτού βασίζεται στη
μέτρηση της απόστασης από τον κόμβο μέχρι κάποιο αντικείμενο (αυτοκίνητο) που εμποδίζει τη θέση του parking
και την εξαγωγή της κατάσταασης της αυτής της θέσης στη σειριακή θύρα του Arduino.</p>
</div>
<div class="openblock float-group">
<div class="content">
<div class="imageblock left">
<div class="content">
<img src="data:image/jpg;base64,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
</div>
<div class="title">Figure 1. Ο κόμβος αντιλαμβάνεται παρουσία οχήματος στη θέση.</div>
</div>
<div class="imageblock right">
<div class="content">
<img src="data:image/jpg;base64,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
</div>
<div class="title">Figure 2. Ο κόμβος αντιλαμβάνεται κενή θέση.</div>
</div>
</div>
</div>
<div class="paragraph">
<p>Ο κόμβος διαθέτει επιπλέον δύο leds ένα κόκκινο και ένα μπλε, σαν έξοδο της κατάστασης
της θέσης του parking για τον οποίο είναι υπεύθυνος. Με κόκκινο χαρακτηρίζεται η θέση που είναι
δεσμευμένη από ένα όχημα και με μπλε η ελεύθερη θέση, όπως φαίνεται στις παραπάνω εικόνες.</p>
</div>
</div>
<div class="sect3">
<h4 id="_λειτουργία_του_parking_sensor">1.1.3. Λειτουργία του Parking Sensor</h4>
<div class="paragraph">
<p>Κάθε κόμβος στέλνει στην σειριακή του τον κωδικό της θέσης, με τον οποίο έχει προγραμματιστεί το Arduino,
και την κατάσταση του parking, κωδικοποιημένα με τον διαχωριστή "#". Για την κατάσταση του parking ορίζουμε
με "1" ότι η θέση είναι ελεύθεση και με "0" ότι η θέση είναι δεσμευμένη. Ο έλεγχος του sensor γίνεται κάθε
500ms. Η έξοδος στη σειριακή γίνεται με την μορφή ενός string.</p>
</div>
<div class="paragraph">
<p>&lt;κωδικός θέσης&gt;#&lt;διαθεσιμότητα 0 ή 1&gt;</p>
</div>
</div>
<div class="sect3">
<h4 id="_διασύνδεση_κόμβου">1.1.4. Διασύνδεση Κόμβου</h4>
<div class="paragraph">
<p>Ο κόμβος αυτός συνδέεται με ένας "Gateway" κόμβο (βασισμένος σε Raspberry Pi) ο οποίος είναι υπεύθυνος για την
μετάδοση της πληροφορίας που αφορά την διαθεσιμότητα της θέσης του parking στο διαδίκτυο. Η πληροφορία αυτή
λαμβάνεται στον "Gateway" κόμβο οποίος στη συνέχεια την αποκωδικοποιεί και την αποστέλει στον WEB server μέσω του διαδικτύου.</p>
</div>
</div>
</div>
<div class="sect2">
<h3 id="_gateway_node">1.2. Gateway Node</h3>
<div class="sect3">
<h4 id="_υλικά_κόμβου_2">1.2.1. Υλικά Κόμβου</h4>
<div class="ulist">
<ul>
<li>
<p>1 x Raspberry Pi 1</p>
</li>
<li>
<p>1 x Serial Link   (Connects to Arduino)</p>
</li>
<li>
<p>1 x Power Link    (Micro Usb)</p>
</li>
<li>
<p>1 x micro SD      (Loaded with Raspbian OS)</p>
</li>
<li>
<p>1 x Ethernet Link (Connects to nearest Network)</p>
</li>
</ul>
</div>
</div>
<div class="sect3">
<h4 id="_υλοποίηση_και_προγραμματισμός">1.2.2. Υλοποίηση και Προγραμματισμός</h4>
<div class="paragraph">
<p>Η υλοποίηση αποτελείται από την εγκατάσταση του Raspbian OS στο Raspberry και τη δημιουργία ενός proccess
σε γλώσσα python το οποίο διαβάζει από την σειριακή θύρα του την πληροφορία που λαμβάνει από το Arduino με
την μορφή &lt;κωδικός θέσης&gt;#&lt;διαθεσιμότητα 0 ή 1&gt;. Ύστερα αποκωδικοποιεί αυτή την πληροφορία η οποία περιγράφει τον κωδικό της θέσης
και την διαθεσιμότητα της και την αποστέλει μέσω ενός REST API με την μέθοδο POST σε έναν WEB Server.</p>
</div>
</div>
<div class="sect3">
<h4 id="_διασύνδεηση_στο_διαδίκτυο">1.2.3. Διασύνδεηση στο Διαδίκτυο</h4>
<div class="paragraph">
<p>Ο κόμβος Gateway έχει διασύνδεση με το διαδίκτυο μέσω ενός καλωδίου Ethernet (UTP) έτσι ώστε να μπορέσει
να στείλει την πληροφορία</p>
</div>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_server_node_κεντρικός_server_όπου_κρατά_την_κατάσταση_της_κάθε_θέσης_του_parking">2. Server Node (Κεντρικός Server όπου κρατά την κατάσταση της κάθε θέσης του Parking)</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Ο κόμβος αυτός υλοποιεί ένα process γραμμένο σε γλώσσα προγραμματισμού Python 3.</p>
</div>
<div class="sect2">
<h3 id="_εκτέλεση_του_process_στο_cloud">2.1. Εκτέλεση του Process στο Cloud</h3>
<div class="paragraph">
<p>Για την εκτέλεση του process χρησιμοποιούμε την πλατφόρμα IAAS (Infrastructure as a Service)
<a href="https://www.heroku.com/platform">Heroku</a>, για την οποιά μπορούμε να βρούμε περεταίρω πληροφορίες στον σύνδεσμο
παραπάνω.</p>
</div>
<div class="openblock float-group">
<div class="content">
<div class="imageblock center">
<div class="content">
<img src="data:image/png;base64,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
</div>
<div class="title">Figure 3. Συνδεσμολογία moter, motor driver, arduino, ultrasonic sensor και servo motor.</div>
</div>
</div>
</div>
<div class="paragraph">
<p>Για την διαδικασία του deployment εκτελούμε ένα σύνολο βημάτων τα οποία αποτελούνται από</p>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_autonomous_parking">3. Autonomous Parking</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Το αυτότομο πρκάριμα αποτελείται από το όχημα με εκατεστημένους τους απάραίτητους αισθητήρες και ελεγκτές
καθός και έναν μικροελεγκτή (Arduino) για τον έλεγχο αυτών των ελεγκτών. Σκοπός είναι το όχημα να μπορεί
να μάθει μέσω του διαδικτύου το "Status" του parking και να παρκάρει στην 1η διαθέσιμη θέση εφ' όσων
υπάρχει μία τουλάχιστων διαθέσιμη θέση στον χώρο στάθμευσης.</p>
</div>
<div class="paragraph">
<p><strong>Η υλοποίηση του αυτόνομου parking χωρίζεται σε δύο βασικά μέρη.</strong></p>
</div>
<div class="ulist">
<ul>
<li>
<p>Το 1<sub>ο</sub> μέρος αποτελείται από τον μικροελεγκτή για τον έλεγχο των αισθητήρων και των κινητήρων του οχήματος και
εκτελώντας τα απαραίτητα βήματα, να μπορέσει να παρκάρει το όχημα.</p>
</li>
<li>
<p>Το 2<sub>ο</sub> μέρος αποτείται από τον κόμβο ο οποίος θα έχει πρόσβαση στο διαδίκτυο,  όπου αφού ελέγξει αν υπάρχει
διαθέσιμη θέση και γνωρίζει ποια είναι η πρώτη ελεύθερη θέση, να δώσει εντολή στον μικροελεγκτή να παρκάρει σε αυτή.</p>
</li>
</ul>
</div>
<div class="sect2">
<h3 id="_microcotroller_and_car">3.1. Microcotroller and Car</h3>
<div class="sect3">
<h4 id="_υλικά_κόμβου_3">3.1.1. Υλικά Κόμβου</h4>
<div class="ulist">
<ul>
<li>
<p>1 x Arduino Uno</p>
</li>
<li>
<p>1 x Servo Motor</p>
</li>
<li>
<p>1 x Motor Driver</p>
</li>
<li>
<p>4 x Moter για τους 4 τροχούς</p>
</li>
<li>
<p>1 x Ultrasonic</p>
</li>
<li>
<p>1 x 9V Battery</p>
</li>
<li>
<p>1 x 4,8V Battery</p>
</li>
<li>
<p>1 x Car</p>
</li>
<li>
<p>1 x Raspberry Pi</p>
</li>
</ul>
</div>
</div>
<div class="sect3">
<h4 id="_υλοποίηση_και_προγραμματισμός_2">3.1.2. Υλοποίηση και Προγραμματισμός</h4>
<div class="paragraph">
<p>Ο motor driver, το Servo motor  καθώς και ο Ultrasonic αισθητήρας κουμπώνουν στον μικροελεγκτή Arduino Uno που χρησιμοποιούμε,
τον οποίο τον εγκαθηστούμε πάνω στο καλούπι του οχήματος το οποίο έχει εγκατεστημένα 4 τροχούς. Οι τροχοί οδηοούνται από 4 moters
τα οποία τροφοδοτούνται από τον motor driver.</p>
</div>
<div class="paragraph">
<p>Η συνδεσμολογία έχει την διάταξη που παρουσιάζεται παρακάτω:</p>
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</div>
<div class="title">Figure 4. Συνδεσμολογία moter, motor driver, arduino, ultrasonic sensor και servo motor.</div>
</div>
</div>
</div>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<i class="fa icon-note" title="Note"></i>
</td>
<td class="content">
<div class="title">Reminder</div>
SLOW SUCCESS BUILDS CHARACTER, FAST SUCCESS BUILDS EGO.
</td>
</tr>
</table>
</div>
</div>
</div>
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Last updated 2020-01-04 00:10:47 +0200
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