Fundamentals Midterm

Question 1

These types of sensors measure the amount of water vapor in the atmosphere of air or other gases. are commonly found in heating, vents and air conditioning (HVAC) systems in both industrial and residential domains. They can be found in many other areas including hospitals, and meteorology stations to report and predict weather.

Answer 1

Humidity Sensors

Question 2

Used to detect the light beam reflected from the target. A thru beam type

Answer 2

Photoelectric sensor

Question 3

These types of sensors monitor and detect changes in air quality, including the presence of toxic, combustible or hazardous gasses.

Answer 3

Gas Sensors

Question 4

Used to measure the change in light quantity caused by the target crossing the optical axis

Answer 4

Sensor

Question 5

It is sensing the temperature in a house to determine when to tell the heating to turn on/off. This system is not just automated though, the temperature at which the heating will switch on or off can be adjusted.

Answer 5

Thermostat

Question 6

The role of a sensor in a control and automation system is to __, providing this information to the control system.

Answer 6

detect and measure some physical effect

Question 7

What are sensors made up of?

Answer 7

Ceramics

Question 8

What are the two basic components of a photoelectric sensor?

Answer 8

Receiver and Emitter

Question 9

Are used in a large range of industrial applications for generating information about various objects. without physical contact.

Answer 9

Optical sensors

Question 10

A type of sensor is used to measure the change in light quantity caused by the target crossing the optical axis.

Answer 10

Thru-beam

Question 11

Noncontact profilers cover a spectrum of techniques and methods and rely on different technologies to capture surface topography via a derived optical signal. Generally, these varied approaches incorporate an optical stand equipped with objectives, a digital camera, and scanner motor to efficiently capture full areas.

Answer 11

Optical profiler technology

Question 12

Useful for gas leakage detection (in home and industry). It is suitable for detecting H2, LPG, CH4, CO, Alcohol.

Answer 12

Grove - Gas Sensor(MQ5)

Question 13

These types of sensors measure the amount of water vapor in the atmosphere of air or other gases. are commonly found in heating, vents and air conditioning (HVAC) systems in both industrial and residential domains.

Answer 13

Humidity Sensors

Question 14

These types of sensors sense characteristics in their surroundings by either emitting or detecting radiation. They can also measure the heat emitted by objects. Infrared sensors are used in a variety of different IoT projects including healthcare as they simplify the monitoring of blood flow and blood pressure

Answer 14

Infrared Sensors

Question 15

It convert rays of light into electrical signals. There are many applications and use cases for optical sensors. In the auto industry, vehicles use optical sensors to recognize signs, obstacles, and other things that a driver would notice when driving or parking.

Answer 15

Optical sensors

Question 16

Used to measure the change in light quantity caused by the target crossing the optical axis

Answer 16

Thru-beam sensor

Question 17

Used in home heating ventilating and air conditioning systems offices, cars, industrial spaces and greenhouses

Answer 17

Temperature Sensor

Question 17

Those sensor made from conventional (traditional) ceramic materials, typically very tough in nature, and those which are made up of

Answer 17

piezoceramic materials

Question 18

Detect the amount of current passing through a conductor by measuring the magnetic field generated around it

Answer 18

Current Sensor

Question 19

conduct electricity at a certain rate therefore leading to a specific level of charge flow that is associated with a specific level of pressure

Answer 19

Barometric Sensor

Question 20

Measure the angular rate or velocity, often defined as a measurement of speed and rotation around an axis. Use cases include automotive, such as car navigation and electronic stability control (anti-skid) systems.

Answer 20

Gyroscope sensors

Question 21

It detect an object’s acceleration i.e. the rate of change of the object’s velocity with respect to time. can also detect changes to gravity.

Answer 21

Accelerometers

Question 21

Are used for non-contact detection of objects near the sensor. These types of sensors often emit electromagnetic fields or beams of radiation such as infrared.

Answer 21

Proximity sensors

Question 22

A senses changes in gases and liquids. When the __ changes, the sensor detects these changes, and communicates them to connected systems. Common use cases include leak testing which can be a result of decay

Answer 22

Pressure sensor

Question 23

Use how long it takes transmitted IR to be reflected back into the receiver to approximate its distance from an obstacle

Answer 23

IR Range Sensor

Question 24

Measure presence o absence of an obstacle and measure how further away an object

Answer 24

ultrasonic range finders