The Internet of Things, or IoT, is a complex system that consists of the collection, transfer, and analyzation of data over a network that does not require any human to human or human to computer interaction to function. IoT devices can benefit many sectors, including consumer, infrastructure, industrial, and commercial applications. The first example of an IoT device was a Coke machine that was able to track its own inventory, as well as detect whether the drinks it held were cold or warm. While this is a simple example, the basis of the system that controls it can be used to create many different possible functions across a variety of devices and systems.
For an IoT system to function optimally, it relies on both sensors and actuators. Sensors are able to detect a change in their environment and then send an electronic signal based on that change. Actuators are a component of a system or machine that takes that electronic signal and then converts it into an action, thus is often considered the “mover”. Together, the sensors and actuators help the IoT system function for its operations.
Within IoT systems, there are various types of sensors and actuators depending on the application. Various sensors include temperature sensors for tracking thermal conditions, moisture sensors for applications such as HVAC and weather, light sensors for electronic auto-brightness, water level sensors for flood warnings, and many more. Actuators include linear actuators which provide straight line movement, motors for rotational movement, relays which operate power switches, and solenoids that provide locking and triggering operations. The sensor helps gather and present the data, while the actuator provides the driving force. Together, systems and operations can be streamlined and work optimally. As more systems utilize IoT, more efficiency in society and sectors may be achieved.
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