Industrial Automation

7 Types of Most Commonly Used Omron Sensors

Omron sensor is a device which recognizes or evaluates a physical property and records it. Sensors have a plethora of types and functions. However there are certain types of sensors that are more popular and common than the others due to higher demands in usage.


7 Types of Most Commonly Used Omron Sensors

1. Temperature Sensors

Temperature sensor is one of the most commonly used and popular sensors. A temperature sensor measures the changes in temperature. The changes in the temperature in a Temperature Sensor lead to changes in its physical properties such as resistance or voltage. Temperature sensors are commonly used in computers, smartphones, vehicles, air conditioning systems, factories and etc. 

2. Proximity Sensors

A Proximity sensor detects the presence of an object. Proximity sensor can be categorised as a non-contact type of sensor. Proximity sensors may be implemented using various techniques such as Optical (such as Infrared or Laser), Ultrasonic, Hall Effect, Capacitive etc.

3. Infrared Sensors

Infrared Sensors are used in every mobile phones as proximity sensors. This is because infrared sensors are light based sensors that can be used like Proximity sensors and Object Detection in tons of other applications. Infrared sensors can be categorised into two types; Reflective Type and Transmissive Type. The difference between these two types is the position of the infrared sensor and infrared transmitter. 

In Reflective Type of Infrared sensors, the position of the infrared sensor and transmitter are beside each other. Meanwhile, in Transmissive Type of Infrared sensors, the infrared sensors and transmitter are placed facing each other.

4. Ultrasonic Sensor

The function of an Ultrasonic sensor is that it is used to measure velocity and distance of the object. An ultrasonic sensor operates with a frequency greater than that of the human hearing range, depending on the properties of the sound waves. An Ultrasonic Sensor can measure the distance of the object (similar to SONAR) by using the time of flight of the sound wave. The velocity of an object is measured by using The Doppler Shift property of the sound wave.

5. Light Sensor

A Light Sensor produces an output signal showing light intensity by calculating the radiant energy that occurs in a very narrow range of frequencies known as “light,” ranging from “Infra-red” to “Visible” to “Ultraviolet” light spectrum. The light sensor is a passive device which converts this “light energy” into an electrical signal output, whether visible or in the infra-red parts of the spectrum. “Photoelectric Systems” or “Photo Sensors” are the more typical name for Light sensors because light energy (photons) is converted into electricity (electrons).

6. Pressure Sensor

A pressure sensor evaluates the pressure by having a pressure sensitive part and other components to translate this information (pressure) into an output signal. Pressure measurements measured by the Pressure sensor can be categorized as four types, which are differential absolute pressure sensors, absolute pressure sensors, gauge pressure sensors, and sealed gauge pressure sensors.

7. Smoke Sensor

A smoke sensor is an electronic fire-resistant device that automatically detects smoke. Smoke sensors are widely used everywhere as it works as an alarm that warns others about fire. Passive smoke sensors can be categorised into two types; photoelectric (optical) and ionisation (physical process). If smoke enters the detector chamber, a photoelectric detector detects a rapid dispersal of light, thus activating the alarm. Meanwhile, due to being highly sensitive to small smoke particles, an ionisation detector responds about 30 to 90 seconds faster to fast flaming flames. However, it is slow in responding to smouldering flames. It is advisable to use the combination of both alarms for better protection.