Mini Project- Automated Selection Machine

Mini Project: Automated Selection Machine.

Author: University of HertfordshireDate created:Date revised: 2009

AbstractThe following resources come from the 2009/10 BEng in Electrical Engineering (course number 2ELE0066) from the University of Hertfordshire. All the mini projects are designed as level two modules of the undergraduate programmes.

The objectives of this module are to demonstrate within a domestic control environment:

The implementation of wireless starter kit The evaluation and implementation of wireless sensors The implementation of wireless Cameras

In a normal domestic houses and businesses premises, lighting appliances, heating and cooling, security and monitoring systems, entertainment (home audio and video), communications (telephones and intercoms) and even lawn sprinklers is above 20 items. House keepers naturally lose tracks of monitoring and controlling the aforementioned items. This project is about home monitoring, controlling, security and automation. The home automation system setup, programme and operate specific wireless communication protocol such as ZigBee are part of this mini project’s theme. The completion of the project must follow a testing stage to assure proper setup.

ContentsSection 1. Project Overview.................................................................................................2Section 2. Project Day 1 Activity Briefing Sheet...................................................................5Section 3. Project Day 2 Activity Briefing Sheet...................................................................6Section 4. Introduction Lecture.............................................................................................7

PLC...................................................................................................................................7Ladder Logic.....................................................................................................................9

Credits................................................................................................................................10

In addition to the resources found below there are supporting documents, which should be used in combination with this resource. Please see:

Mini Projects - Introductory presentation. Mini Projects - E-Log.Mini Projects - Staff & Student Guide.Mini Projects - Standard Grading Criteria.Mini Projects - Reflection.

© University of Hertfordshire 2009 This work is licensed under a Creative Commons Attribution 2.0 License.

http://creativecommons.org/licenses/by/2.0/uk/

http://www.herts.ac.uk/courses/Electrical-and-Electronic-Engineering.cfm

http://creativecommons.org/licenses/by/2.0/uk/%00%E5%A1%B9%EF%92%81%E1%B4%BB%E4%A1%BF%E2%B2%AF%E5%B6%82%E8%97%84%E6%8C%A7%00%00%EA%AE%A5

Mini Project: Automated Selection Machine

Section 1. Project Overview

1. Learning Outcomes assessed (as taken from the DMD)

All Learning Outcomes specified in the Definitive Module Documentation are assessed as part of this mini project, the specific Learning Outcomes are:

Knowledge and Understanding

Be able to analyse and breakdown problem tasks into manageable steps.

Integrate previous and concurrent learning and to use it to solve technology-based problems.

Be able to describe the project life-cycle appropriately.

Be able to assemble, programme and automate home automation and control

Skills and Attributes

Produce a solution to a defined domestic control application.

Carry out a simple critical evaluation of their solution.

Demonstrate an ability to work effectively in a teams, small groups and individually.

Demonstrate an ability to manage time and resources effectively.

2. Project Title: Automated Selection Machine

3. Project Objectives: (technical, specific to this project)To demonstrate within a domestic control environment:

The implementation of wireless starter kit The evaluation and implementation of wireless sensors The implementation of wireless Cameras

4. Project Summary: (50 words max)

In a normal domestic houses and businesses premises, Lighting appliances, heating and cooling, security and monitoring systems, entertainment (home audio and video), communications (telephones and intercoms) and even lawn sprinklers is above 20 items.

House keepers naturally lose tracks of monitoring and controlling the aforementioned items. This project is about home monitoring, controlling, security and automation. The home automation system setup, programme and operate specific wireless communication protocol such as ZigBee are part of this mini project’s theme. The completion of the project must follow a testing stage to assure proper setup.

5. Introductory Lecture (2hrs) Content: Introduction to home automation Introduction to ZigBee Hardware to be used Topics for students to revise: Wireless starter kit, sensors and cameras user

manuals. ZigBee user manual.

6. Preparation Session (3hrs): Home automation familiarisation

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7. Day 1

Expected Outcomes for the day:Students working in a group should lay out the required devices in model house. They should also wire-up these devices to the USB development kit. Additionally students working in group should be able to install and operate the USB development kit.

Assessment criteria; the way in which the work has been planned and managed, demonstrate the technical criteria on selecting the positions and types of the devices in use.

Key Tasks:

Project Planning; developing an appropriate strategy to meet a specific set of technical requirements.

Assemble the hardware components. Fit set of sensors and cameras where is necessary. Configure the whole home automation system. Technical Appraisal; First phase test.

8. Day 2

Expected Outcomes for the day:Students working in small groups will have to produce an appropriate flow chart required for the operation of the home automation system. Student working in small groups should develop the programme and demonstrate the completed project.

Assessment criteria; Based on successful development and implementation of the software modules. Demonstrate the complete home automation system is working according to the above specification.

Key Tasks:

Project Planning; developing an appropriate strategy to meet a specific set of technical requirements.

Programme the home automation system. Reviewing ZigBee details. Technical Appraisal; Second phase test.

9. Facilitator guidance (key ideas to draw out from students):

Day 1: ZigBee protocol, type of sensors, video streaming.

Day 2: Home automation evaluation.

10. Required Resources: Laboratory Facilities and Teaching Support.

Laboratory Resources: D421.

1. PC Workstations with Visual Studio developer software.

2. USB development Kits and CD with drivers.

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Mini Project: Automated Selection Machine3. PC Workstations should allow the installation of drivers from the user.

4. A home model.

5. LEDs and wireless cameras and a set of switches.

6. One Signal generator and one oscilloscope.

Teaching Resources:

1. Preparatory Session; an overview to the industrial application.

2. Day 1; briefing pack containing instructions for the day with source materials.

3. Day 2; briefing pack for the day; additional source materials, team allocations for group work.

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Section 2. Project Day 1 Activity Briefing Sheet

Expected Outcomes for the day:

Students should be familiar with the material and concepts provided in the introductory lecture. And draw up a list of required input, output and sensors.

Suggest and draw an industrial process control machine

Write Ladder Logic and Sequential Chart for this machine

Key Tasks:

Project Planning: developing an appropriate strategy to meet a specific set of technical requirements.

Try a the Ladder Logic in Real time

Draw a list of required input and output switches and sensors

Technical Appraisal: First Phase Test

Assessment Criteria: The way in which the work has been planned and managed.

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Section 3. Project Day 2 Activity Briefing Sheet

Scenario

A conveyor carries two different types of products, for example red and green balls. It is required to convey both balls to two separate channels to be packaged separately. A Start/Stop is switch is to be used to turn off/on the conveyor motor. Set of two sensors, one to sense the red balls and the second to sense the green balls are mounted on the conveyor.

Key Tasks

To simulate the action you may use two LEDs to indicate the green and red balls have been passed the sensors. You need to:

a) Draw the project

b) List the required input switches and sensors, output relays, output LEDs, etc.

c) Write the Ladder Logic for this application

d) Write the Sequential Chart for this application

e) Try them on the provided PLC

f) Draw the application on HMI E1071

g) Test and verify the application in real time

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Section 4. Introduction Lecture

Process Automation has driven the market to manufacture more, to charge less, to satisfy the customer further, to improve the quality to maximum and to reach the state of the art production in a record time. That wouldn’t be possible without using a system called Programmable Logic Controller (PLC).

PLC

PLCs are made available by quite few companies such as Allan Bradley, Siemens, Mitsubishi, Sharp, Omron etc.

PLCs all share the same basic structure as depicted in Figure 1.

Figure 1: PLC Basic Architecture

The intelligent part within the hardware section is the microcontroller CPU (Central Processing Unit). The code is loaded to the memory and the CPU received the code from the memory. The programmer expects the input devices to follow the instructions (code) to drive the requested output to drive output devices that are connected to the PLC.

The input and output devices are connected to the PLC via dedicated set connections. The input terminals on Mitsubishi PLC FX0 labelled as X0 to X12 and the output terminals are labelled as Y0 to Y12. Figure 2 shows the PLC with power supply that covert the 220 V to 24 V, AD and DA converters and 12 input and 12 output terminals.

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Figure 2: Mitsubishi PLC with Power Supply converter, 2-channel A to D converter and 4-Channel D to A converter

The example shown in Figure 3 shows an example that the X0 input turn on/off the output terminal that wired to a light bulb via Y2.

Figure 3: Mitsubishi PLC With Input X0 and Output Y2 connected to a Switch and Lamp Load

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Mini Project: Automated Selection MachineLadder Logic

Ladder Logic is a programming language that translates an electrical circuit diagram that contains power supply, input and output devices.

The example shown in Figure 4below depicts the circuit diagram that drawn in Figure 3 above.

Figure 4: Ladder Logic of a Switch and Light

It is very simple and straight forward to explain the Ladder Logic in Figure 4. If X0 is turned on, Y2 will drive the Light Bulb on, that all to it!

The example shown in figure 5 consists of inputs X0 and X1 are driving two outputs Y2 and Y3. From the figure, you may notice immediately that the diagram looks like a ladder, hence Ladder Logic.

Figure 5: Ladder Logic with two lines of code

The software tool that allows you to draw and check Ladder Logic for Mitsubishi PLCs is called GX IEC. It is available on all PCs in D411/D421. GX IEC will allow you to download the code to the PLC to try your program in real time.

The session of using GX and a PLC is in the afternoon. I will draw on the whiteboard the exercise and it should take two to three hours’ time to finish the exercise. I, T. Alukaidey, will be around to answer any question on the subject.

Good Luck!

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Credits

This resource was created by the University of Hertfordshire and released as an open educational resource through the Open Engineering Resources project of the HE Academy Engineering Subject Centre. The Open Engineering Resources project was funded by HEFCE and part of the JISC/HE Academy UKOER programme.

© University of Hertfordshire 2009

This work is licensed under a Creative Commons Attribution 2.0 License.

Microsoft product screen shots reprinted with permission from Microsoft Corporation. Microsoft and Visual C# are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.

The name of the University of Hertfordshire, UH and the UH logo are the name and registered marks of the University of Hertfordshire. To the fullest extent permitted by law the University of Hertfordshire reserves all its rights in its name and marks which may not be used except with its written permission.

The JISC logo is licensed under the terms of the Creative Commons Attribution-Non-Commercial-No Derivative Works 2.0 UK: England & Wales Licence. All reproductions must comply with the terms of that licence.

The HEA logo is owned by the Higher Education Academy Limited may be freely distributed and copied for educational purposes only, provided that appropriate acknowledgement is given to the Higher Education Academy as the copyright holder and original publisher.

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Mini Project- Automated Selection Machine

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