Table 14 List of all sensors found in the sample

Temperature

Ambient

19

Degree of cloudness

Ambient

1

Accelerometer

Motion

12

Direction

Position

1

Humidity

Ambient

10

Discomfort index

Biosensor

1

Light sensor

Ambient

10

EEG

Biosensor

1

RFID

Identification

7

Electrical conductivity

Electric

1

PIR

Presence

6

Float sensor

Hydraulic

1

Acoustic

Acoustic

5

Flow sensor

Hydraulic

1

Camcoder

Machine vision

5

IR camcoder

Machine vision

1

AC analyzer

Electric

3

Lane perception

Machine vision

1

Button

Interaction

3

Laser scanner

Motion

1

ECG

Biosensor

3

Load sensor

Force/load

1

Energy consumption

Electric

3

NFC

Identification

1

Gyroscope

Motion

3

ORP

Chemical

1

Position sensor

Position

3

Proximity sensor

Motion

1

Chemical detector

Chemical

2

Smoke sensor

Chemical

1

Current

Electric

2

Soil conductivity

Electric

1

GPS

Position

2

Soil humidity

Ambient

1

Heartbeat

Biosensor

2

Soil microorganism

Ambient

1

Magnetometer

Position

2

Soil temperature

Ambient

1

pH

Chemical

2

Solar irradiation index

Ambient

1

Pressure

Ambient

2

Speed

Force/load

1

Temperature (object)

Object information

2

Swallow sensor

Biosensor

1

Tension

Electric

2

Thermal camera

Machine vision

1

Blood pressure

Biosensor

1

Tilt sensor

Motion

1

Breath sensor

Biosensor

1

Ultrasonic sensor

Position

1

Capacitance

Electric

1

Water oxygen

Chemical

1

CO2

Chemical

1

Water quality

Chemical

1

Wind velocity

Force/load

1

Total

142