What an automated system is

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Quick Questions

Shade in the A or B circle for each question.

1. Which describes an automated system?

A It only works when a person presses a button for every step

B It senses, decides and acts without a person controlling each step

2. An automatic door opens when someone walks up to it. What does the sensor do?

A Opens the door by pushing it

B Senses that a person is near the door

3. Which is an example of manual control?

A A person turns a tap on and off by hand

B A door opens by itself when it senses a person

4. In an automated system, which part makes the decision?

A The microprocessor, using the sensor data

B The sensor, by moving the door

5. Which list shows the steps of an automated system in the correct order?

A Sense, decide, act

B Act, sense, decide

Match the Pairs

Draw a line connecting each item on the left to its match on the right.

Left column		Right column
1automated system		AIf a person controls every step it is manual control, not an automated system. An automated system senses, decides and acts by itself.
2manual control		BA system that senses its surroundings, decides what to do and acts, without a person controlling each step
3An automatic door senses a person, decides to open and acts by moving the door, with no one pressing a button		CThe order is wrong. An automated system must sense first, then decide, then act.
4The decision step compares the sensor reading with a stored value to choose what to do		DIF reading > limit THEN open
5A system is automated if a person presses a button for every step		Esense -> decide -> act
6An automated system acts first and then senses its surroundings		FA person has to carry out each step themselves, such as pushing a door open by hand

Definitions

automated system

Fill in the Blanks

Complete each line of code by filling in the missing parts.

IF doorSensor = TRUE ____ openDoor() ENDIF

IF temperature _ 25 THEN fanOn() ENDIF

__ lightLevel < 20 THEN lightOn() ENDIF

IF personDetected = ____ THEN openDoor() ENDIF

_____ systemOn = TRUE checkSensor() ENDWHILE

Spot the Error

Shade in the letter of the line that contains an error.

Question 1

A reading ← OPEN_DOOR()

B IF reading = 1 THEN

C OPEN_DOOR()

D ENDIF

Question 2

A reading ← READ_SENSOR()

B IF reading > 25

C TURN_ON_FAN()

D ENDIF

Question 3

A light ← PRESS_SWITCH()

B IF light < 30 THEN

C SWITCH_ON_LAMP()

D ENDIF

Question 4

A WHILE TRUE

B distance ← ASK_DRIVER()

C IF distance < 2 THEN

D STOP_CAR()

E ENDIF

F ENDWHILE

Question 5

A WHILE TRUE

B level ← READ_MOISTURE()

C IF level < 20 THEN

D READ_MOISTURE()

E ENDIF

F ENDWHILE

Answer Key

What an automated system is

Section A: Quick Questions

B — It senses, decides and acts without a person controlling each step

B — Senses that a person is near the door

A — A person turns a tap on and off by hand

A — The microprocessor, using the sensor data

A — Sense, decide, act

Section B: Match the Pairs

automated system → A system that senses its surroundings, decides what to do and acts, without a person controlling each step

manual control → A person has to carry out each step themselves, such as pushing a door open by hand

An automatic door senses a person, decides to open and acts by moving the door, with no one pressing a button → sense -> decide -> act

The decision step compares the sensor reading with a stored value to choose what to do → IF reading > limit THEN open

A system is automated if a person presses a button for every step → If a person controls every step it is manual control, not an automated system. An automated system senses, decides and acts by itself.

An automated system acts first and then senses its surroundings → The order is wrong. An automated system must sense first, then decide, then act.

Section C: Definitions

automated system — A system that senses its surroundings, decides what to do and acts, without a person controlling each step. For example, an automatic door.

Section D: Fill in the Blanks

IF doorSensor = TRUE THEN
  openDoor()
ENDIF

IF temperature > 25 THEN
  fanOn()
ENDIF

IF lightLevel < 20 THEN
  lightOn()
ENDIF

IF personDetected = TRUE THEN
  openDoor()
ENDIF

WHILE systemOn = TRUE
  checkSensor()
ENDWHILE

Section E: Spot the Error

A — The first step of an automated system is to sense. The program should read the sensor with READ_SENSOR(), not call the action OPEN_DOOR() to get the reading.

B — The decision step needs THEN after the condition. It should be IF reading > 25 THEN so the system can decide whether to act.

A — An automated street lamp senses the light level itself. It should use READ_LIGHT_SENSOR(), not rely on a person pressing a switch.

B — No person should be needed for each step. The system should sense the distance with READ_SENSOR(), not ask the driver.

D — The act step should switch on the actuator. Reading the moisture sensor again does nothing to water the soil. It should be START_PUMP().