What is a sensor?
A sensor measures a real-world physical property. And in some cases, it will actually send that measurement via an electrical signal to a computer based system.
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Types of Sensors in Everyday Life
Sensors are pervasive in our daily routines, often unnoticed. For instance, inductive loops at traffic lights detect vehicles, capacitive sensors unlock car doors upon approach, and photoelectric sensors facilitate automatic door entries. Even at supermarkets, barcode scanners operate as sensors, streamlining checkout processes.
Sensors in Industrial and Hydraulic Applications
Transitioning to industrial contexts, sensors play pivotal roles in monitoring critical parameters such as temperature, pressure, flow, speed, and position. These sensors ensure precise control over hydraulic systems, enhancing efficiency and safety across manufacturing processes.
The Importance of Automation
Automation, facilitated by sensors, brings numerous benefits. By eliminating human variability, sensors enable consistent and reliable operations, crucial for maintaining quality and efficiency. Furthermore, automation lays the groundwork for future advancements towards fully autonomous systems.
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Outputs and Applications
Sensors generate outputs in various forms, including Analog (voltage or current) and digital signals. Analog signals, such as those from fuel level sensors in vehicles, provide continuous data, while digital signals, like those from traffic light sensors, convey discrete on/off information.
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Integration with Computer-Based Systems
The integration of sensors with computer-based systems, such as programmable logic controllers (PLCs), forms the backbone of automated processes. PLCs interpret sensor data to execute programmed decisions, akin to electronic control units in vehicles or signaling systems in railways.
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