Introduction to IoT Sensors and Types Used in Internet of Things


The Internet of Things (IoT) has reformed the world with its cutting-edge innovation that aids in acquiring new technology for applications home automation and many related fields. IoT Sensors are utilized as the principal segment in the structuring of such savvy gadgets that assist in increasing snappier and omnipresent access to assets. As sensors in IoT assume an essential job in achieving new levels of research and execution, it is vital to have learned about IoT devices.

Introduction to Sensors in IoT

IoT Sensors are the devices that are utilized to identify and after that, react to electrical or optical signs. It is a gadget that proselytes a physical parameter, (for example, moistness, speed, temperature, circulatory strain, and so on.) into an electrical signal that can be easily measured.

There is a list of sensors that are utilized to play out this advanced task. These sensors play out their activity splendidly to enable the gadget to end up shrewd and take care of a large number of the current issues that are looked at by the general population.

Given underneath is a full IoT sensor list that contains all the data about their working and their further sorts that are being used to create shrewd gadgets in a powerful way.

10 Different Types of IoT Sensors

Top 10 Sensor Types Being Used in IoT. Humidity sensors, IR sensors, Image sensors, Smoke sensors, Proximity sensors, Temperature sensors, Optical sensors, Motion detection sensors, Pressure sensors, and Gas sensors.

Humidity sensors

The type of sensor that is used to measure humidity or the amount of water vapor in the atmosphere is commonly known as a Humidity sensor. These are the sensors that mainly use temperature sensors to complete many manufacturing processes that require perfect working conditions.

They mainly are found in useful applications in residential & industrial domains namely in ventilating, heating, and air conditioning control systems owing to their fast detection of any change that occurs in humidity. These sensors are commonly used in meteorology stations, hospitals, Automotive, Paint and coatings industries, etc.

IR sensors

The sensors used for sensing some specific characteristics of their surroundings by either emitting or detecting infrared radiation are known as infrared sensors. This type of sensor finds its applications in Automotive blind-angle detection, Healthcare, Household goods, Home appliances & remote control, wearable electronics, Breath analysis, Infrared vision, optical communication, etc.

This sensor type is a widely used sensor to monitor blood flow and pressure to ensure the rise of smart devices with all these features.

Image sensors

The sensor type that is used to convert optical images into electronic signals for displaying or storing files electronically is known as an image sensor. In this, two types of sensors are used mainly, Charge-Coupled Device (CCD) and Complementary Metal-Oxide Semiconductor (CMOS) that have some degree of sensitivity to light and no difference in quality.

The best use of an image sensor is based on thermal imaging devices digital cameras & modules, radar, sonar, medical imaging and night vision equipment, Biometric & IRIS devices, as well as media houses. These are used as IoT sensors for collecting data about different customers and helping businesses get a better insight into the number of visitors to their stores.

Smoke sensor

The sensor used in IoT devices to sense smoke or airborne particulates is commonly called the smoke sensor. These sensors have come into use since the trend of growth in IoT devices has been explored.

These sensors have applications in many domains like buildings and accommodation infra, manufacturing industry, HVAC, etc. to mainly safeguard the people working in such hazardous areas. Two main types of sensors in smoke detection are Ionization smoke sensors and Optical smoke sensors.

Proximity sensors

These IoT sensors are beneficial devices that detect the presence or absence of a nearby object and then, convert them into an electrical signal that is easily understandable by the users. These are found to be quite useful in detecting the motion as well as the correlation between the customer and products which makes them play a key role in the retail industry.

Some of its types are Inductive Sensors (used for non-contact detection and are robust), Photoelectric Sensors (comprised of light-sensitive parts and used for long-distance sensing), Ultrasonic Sensors (measure the distance of targets, used in harsh conditions), and Capacitive Sensors (detect both metallic and non-metallic targets, used in complex applications).

Temperature sensors

The temperature sensor is a type of sensor that helps in measuring the heat energy which detects any physical change in temperature and then, converts the data obtained in terms readable for a device or user.

They are generally used in refrigerators, A/C control, and other devices, however, now they are also used in agriculture, manufacturing, and healthcare industry. Some main sub-categories of these sensors include Thermocouples, Thermistors, Resistor temperature detectors (RTD) infrared sensors, etc.

Optical sensors

The sensors that measure the number of light rays and then, convert it into necessary electrical signals that can be read by users or instruments is known as an optical sensor. These sensors find a useful application in monitoring electromagnetic energy, such as light, electricity, etc., and have been used in different domains like oil companies, pharmaceutical companies, aerospace, healthcare, etc.

The different types of sensors under optical sensors are Proximity and infrared sensors, Fiber Optics sensors, Photodetector, and pyrometers.

Motion detection sensors

The electronic device that detects the physical movement in an area that helps in transforming motion into an electric signal is called a motion detection sensor. These sensors play a pivotal role in Automatic parking systems, Smart cameras, Automated sinks/toilet flushers, intrusion detection systems, Boom barriers, automatic door control, Toll plazas, Hand dryers, energy management systems, etc.

These sensors are used in manufacturing IoT devices and have several types of sensors such as Ultrasonic sensors, Microwave sensors, and Passive Infrared sensors that have applications in security management systems and are helpful in creating smart devices in a simplified way.

Pressure sensor

The type of sensor used to sense pressure and then, convert it into different electric signals is known as a Pressure sensor. These sensors are valuable to manufacture IoT devices and systems that need pressure to be measured.

The pressure can be maintained at a specific level as required by the device. Also, it offers ease of detecting pressure drops and fluctuations in an organized manner.

Gas sensor

The gas sensors are synonymous with chemical sensors which are extensively used to monitor changes in air quality and gases. There are industries such as detecting toxic or combustible gases, agriculture, and health sectors, Like chemical sensors, they are used in numerous industries such as the manufacturing of paints, plastics, rubber, pharmaceutical & petrochemical, and used for air quality monitoring, chemical Laboratory research, Detection of toxic or combustible gas, Hazardous gas monitoring in coal mines, Oil & Gas industries, etc.

Final Thoughts

Thus, it is important to note that sensors used in IoT are extremely vital and are the heart of the technology. By using the right sensor types for your smart devices you can bring a revolution in the entire process of automation of several processes. IoT sensors have the potential to reach impossible goals using smart technological devices.

By the use of these different types of sensors, one can easily collect necessary data and maintain it for the development of a smart world around us, that will have a reliable solution for every problem you see.

Source – WorldRankSolutions

I started my journey as a Photoshop & HTML designer, my hunger takes me to the next step for PHP, Java, angular, CMS, Python, etc. Till now, I have worked on many software, mobile, web development & design projects. I want to inspire others, that's the only reason I am here to share my experience & knowledge. Let's connect on LinkedIn.