Sensors

Overview

Sensors are one of the most essential pillars of any intelligent electronics system. They provide the real world interface for a wide range of applications, whether for city infrastructures, industrial automation and control, or wearable devices, all use large arrays of sensors for collecting data. This data serves as inputs to the main control system (like a Processor or a Microcontroller) enabling intelligent decision-making. Sensors are the eyes and ears of a system, capturing critical information of the physical world and, converting these physical parameters into signals which can be measured electrically.


Sensors can be broadly classified based on the physical parameters they detect or measure, and suited to different markets and applications. Therefore, when designing intelligent systems, choosing the right sensor is critical. Certain features need to be considered when selecting the right sensor.


Criteria to choose a Sensor:

  • Accuracy

  • Resolution

  • Range

  • Output Type

  • Response time

  • Connectivity

  • Application

  • Cost

  • Reliability


One classification type of sensors is Analog and Digital Sensors, which are based on the nature of the output signals they produced.


Analogue sensors produce a continuous output signal, ranging from a few mico-volts (uV) to several milli-volts (mV), proportional to the quantity being measured. These signals are too low to be measured so some form of amplifier is used to amplify the signal. An analogue-to digital (ADC) is used to convert the analogue signal into the digital form in order to obtain precision and accuracy, as well as to provide readable inputs to the main control system, typically a microcontroller.


Digital Sensors produce discrete output signals that are a digital representation of the quantity being measured. They produce a binary output signal in the form of logic “1” or logic “0”. The signal measured is directly converted into a digital signal output inside the sensor itself allowing it to have greater resolution and higher accuracy compare to analogue type sensors.


Classification based on Measurands:

  • Acoustic

  • Biological

  • Chemical

  • Electric

  • Magnetic

  • Mechanical

  • Optical

  • Radiation

  • Thermal


Farnell elemnet14 has a wide range of sensors from industry leading suppliers, provide the engineers with the choices required to develop various applications, based on specifications such as sensitivity, range, precision, resolution and accuracy from industrial applications to the latest consumer devices. Use our parametric filters to refine your search results based on your required specifications.

Featured Products

Sensors - Industrial

Amphenol Advanced Sensors

Air Quality Evaluation Board

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Omron Electronic Components

2JCIE USB Type Environment Sensor with 7 functions

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Honeywell

Mass Airflow Sensors

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TE Connectivity

HS1101LF Relative Humidity Sensor

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Amphenol Advanced Sensors

Evaluation Board, Smallest I2C Pressure Sensor

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Honeywell

Honeywell HumidIcon™ Digital Humidity/Temperature Sensors

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Omron Electronic Components

USB Type Environment Sensor with 7 functions

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Omega

Temperature Sensing and Process Control

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Sensors - ICs

Infineon

TLE5501 E0002 magnetic angle sensor

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Tronics

High performance MEMS Gyros

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MAXIM

DS18B20: Programmable Resolution 1-Wire Digital Thermometer

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ALLEGRO

Micropower Vertical and Planar Hall-Effect Switches

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On Semi

Silicon Photomultiplier Sensors (SiPM)

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Tronics

High performance MEMS Gyros

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Xsens

MTi 10-series: The reliable industry standard for MEMS based IMU, VRU and AHRS

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Rohm

Sensor Shield for Arduino

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Featured Suppliers

ST MICROELECTRONICS
KIONIX
HONEYWELL
OMRON

Videos

Prototyping with Sensors

Sensors and Actuators Overview | Intel Software

Getting Started with proximity and ambient sensor