Burglar Alarm | DFRobot Science Lab Season 2 EP12
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AshG May 10.2021

DFRobot Science Lab Season 2 

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EP12: Burglar Alarm

 

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Introduction
 

Standards

NGSS

5-PS1-3 Make observations and measurements to identify materials based on their properties.

Science - Grade 3-5

Overview

Taking "Burglar Alarm" as an open subject, the last project in this set of lessons guides students to complete engineering design tasks according to the NGSS standard steps. Just like engineers, students will find problems, set goals, design plans, build and test models, optimize and improve models, and finally complete the whole project.

Materials


Play and Learn with Boson Science Design Kit:   https://www.dfrobot.com/product-2176.html

All the BOSON modules in the kit.
 

Activity 1 DEFINE ENGINEERING PROBLEMS

Find Problems

When sleeping at night, we may worry that thieves may come into the house and steal our valuables. Think about it, can we make a burglar alarm based on the engineering design method we learned before? When the thief steals valuables, the burglar alarm will make a sound!

Engineering Goals

Make a burglar alarm.

Activity 2 DEVELOPING POSSIBLE SOLUTIONS

After determining the engineering goals, let us follow the process of “Brainstorming-Drawing Prototype Diagram-What You Need-What You Do-Test and Evaluate” to develop a solution and complete the building of the burglar alarm.

Brainstorm

Let’s first brainstorm how to build a burglar alarm. In the process, try drawing a prototype for it.

If you don't have ideas for this project, you might as well look for the project inspiration in the appendix!

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Draw Prototype Diagram

In the brainstorming, we have initially understood the function and structure of the burglar alarm. Try drawing a prototype diagram. In the production process, it will be an important reference.

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What You Need

List the materials you need in the table below.

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What You Do

Record your steps in the table below.

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Test and Evaluate

Do you think the burglar alarm can be optimized? Try proposing an optimization plan to improve the efficiency of the burglar alarm.

Conclusion

In this project, we set up an open subject so everyone can make their burglar alarm.

The project is going to an end, please remove cables and put all the BOSON modules back into the kit according to the corresponding position.

Appendix-Reference Project

Burglar alarm based on button and buzzer

Place valuables on the button to keep it pressed. When the thief removes the item, the button will be released and the buzzer will make a sound.

Burglar alarm based on button and fan

Change the buzzer in the previous project to a fan to make an alarm sound. For example, fix small iron nails on the tip of the fan blade and place a can next to it. When the fan rotates, they will hit the can to make an alarm sound.

Burglar alarm based on buzzer and light sensor

Lock valuables in a closed and dark box. When the thief opens the box, the light sensor senses that the light becomes stronger, which can trigger the buzzer.

 

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