Unit 4 Input Output - T3 Sensors

Input Output - Sensors

By Michael Harrington

​To pass this quiz you should read each slide carefully then answer the questions which follow about the side topic.

You can click the back button to re read a topic before you answer the question

Some of these topics are in your end of year exam.

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Multiple Choice

Where can you find all the answers to this test?

Here

https://docs.google.com/presentation/d/17sLWjDBl8k8aVBh_4MfjBXWfv-c-nvTLzCKAPWqfBz0/preview

• In the Input & output lesson website as shown on today's lesson

  (and the link above)

• Not here

Open Ended

Sensors measure physical properties such as temperature

List at least five other physical properties that could be measured

[do not ENTER until you have completed all the answer]

Open Ended

Cars have many sensors that are constantly monitoring the physical state of the car components

What other sensors are used in cars?

[do not ENTER until you have completed all the answer]

Labelling

Security system

The diagram shows three sensors being used as part of an art gallery’s security system

What do each of the sensors do?

Drag labels to their correct position on the image

Pressure sensor

Level Sensor

Infra-red sensor

Acoustic

acoustic sensor

Foot sensor

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​Sensor feedback

Reorder

Reorder the following

• Sensors constantly take readings for monitoring.The microprocessor will have access to pre-set

• values for all sensors.The microprocessor will sample each sensor at a given frequency

• (e.g. every second). If any of the sensor readings exceed the pre-set values, then the microprocessor

• sends a signal to warn the user (this could be a screen output, a siren, a flashing

• light …. or all three). Monitoring continues until the user keys in a PIN/passcode to deactivate the system

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2

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Open Ended

The diagram shows three sensors being used as part of an art gallery’s security system

What do each of the sensors do?

In the lesson you can Complete the worksheet tasks

​Use the information in these web pages to answer the worksheet questions