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• Zeidan Mohammad

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Lab – Draw a Process Diagram Objective In this activity, you will draw a process diagram based on open-loop and closed-loop processes. Explore tools to produce your own process diagrams.

Background/Scenario Open-loop and closed-loop control systems are two basic types of control systems. In an open-loop system, a controller instructs the plant to perform a predetermined action without any verification of the desired results. A closed-loop control system continuously monitors the performance and adjusts the input as necessary to ensure the desired result is achieved. A process diagram can help you identify and understand the components of a control system. In this activity, you will complete process diagrams for common activities. You will also explore some available tools to produce your own process diagrams.

Part 1: Process Diagram for Open-Loop Control Systems An open-loop control system can process an input condition to produce an output. Fill in the controller and the plant for each process shown below.

Light switch

light

What can be added in the process diagrams to verify the desired output has been achieved?

we can add sensors to make sure that the output has been achieved

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Activity – Draw a Process Diagram

Part 2: Process Diagram for Closed-Loop Control Systems In a closed-loop control system, the output is monitored to ensure that the desired results are achieved when the process is finished. The sensor in the process diagram provides the feedback information so adjustments can be made during the process. Fill in the controller, plant, and sensor for each process shown below.

Room Temperature

Thermost at remote

Water Sprinkler System thermoste Sprinkler controller

Water sprink thermostat sensor Mois ture sensor

© 2017 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public.

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What other external conditions could affect the system? How would you account for these external variables?

participant becoming sick and unable to attend

List several smart products available to control indoor temperature and use water efficiently?

Nest Thermostat, Hydrawise , smart sprinkler controller, Dual Fuel – Hybrid Heat, Geothermal Heat

Part 3: Diagram Software There are many free diagram programs available on the Internet. Draw IO (https://www.draw.io) and Gliffy (https://www.gliffy.com) are just two examples of the online diagram software.

Step 1: Draw IO a. Navigate to www.draw.io. b. Choose the location to which to save the diagrams. c.

Choose to create a new diagram or open an existing diagram. Depending on the location, you will authorize access to the cloud services.

d. If you are creating a new file, provide a new filename. Click Create to continue. e. Explore the different types of icons available. f.

Create a diagram based on the diagrams used in this activity.

Step 2: Gliffy a. Navigate to www.gliffy.com. b. Click Start Drawing to begin creating diagrams. c.

A dialog box with tips appears. You can view the tips, and click Start Drawing to continue.

d. Provide the necessary information to sign up for a free trial account to continue. e. Explore the different types of icons available. f.

Create a diagram based on the diagrams used in this activity.

Step 3: Compare Now that you have used both programs, which program would you prefer for collaboration? Explain.

Draw.io has numerous highlights that Gliffy essentially doesn't bolster by any means draw.io you need to move the mouse and snap significantly less than in Gliffy to accomplish something very similar