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Sensors: The Invisible Force Behind Modern Convenience and Safety
October 24, 2025 | Sanjeev Mane, Brooks AutomationEstimated reading time: 1 minute
Sensors and sensor technology are fundamental components of modern life that drive innovation across various electronics and devices. From smartphones to industrial machinery, these small but powerful tools enable seamless interaction with the environment, ensuring efficiency and safety. This article serves as an introduction and overview of sensor technology, highlighting its significance in modern applications and its growing importance in the market as we embrace smarter, more connected systems.
Sensors are transducers, devices that convert one form of energy into another. Specifically, a sensor converts a physical stimulus—such as heat, light, pressure, or motion—into electrical energy. This electrical output is proportional to the input stimulus and is referred to as the sensor’s signal or response. It represents how the sensor interprets and communicates the presence or intensity of the stimulus.
Sometimes, the output from a sensor is directly usable. However, in many cases, the sensor’s output needs to be adjusted to bring it within a detectable and practical range. This is where signal conditioning comes into play. Signal conditioning is a stage introduced after the sensor to modify its output. It may involve amplification, filtering, or converting the signal into a format suitable for further processing or interpretation. This ensures that the sensor’s response is accurate, reliable, and compatible with the system it feeds into.
The final output from the sensor system is sent to the decision-making and control unit. This unit could be a simple controller, a closed-loop controller, a PID controller, a PLC, or even an AI-based system, depending on the application and current technological trends. This unit acts based on the input received from the sensors. Therefore, the speed of decision-making is directly influenced by the sensor’s response time. Key performance parameters of sensors—such as accuracy, precision, and response time—play a critical role in determining the overall behavior of the system.
Continue reading this article in the October 2025 issue of SMT007 Magazine.
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