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What is Sensor Selection? 

Today’s sensors vary in function and structure. Selecting the appropriate sensor according to specific measurement purposes or measured objects plays an important role on the success or failure of the measurement results. The selection of an appropriate sensor is based on matching the operating characteristics of sensors to the requirements of an application.  The The final selection is aided by additional considerations such as cost, and impedance matching [1].

Sensor Selection Methods

Sensor Selection by Product Classification 

Selecting sensors based on characteristics such as [2] ;

Product Classification

• • • Photoelectric sensors 
inductive
• • • Inductive proximity
pressure
• • • Pressure sensor
sensing method, photoelectric ex;thru

Sensing Method - Photoelectric

• • • Thru-beam
retroreflective 
• • • Retroreflective 
diffuse
• • • Diffuse reflective 
configuration, photoelectric ex;mutual amplifier 

Configuration

• • • Mutual amplifier separated
power
• • • Power supply built-in type
performance, ex ;sensing

Performance

• • • Sensing range 
functions, ex ;mutual

Functions

• • • Mutual interference prevention function 
• installation;
•  output method ;
• supply voltage;
• etc. 

Installation

Output Method

Supply Voltage

Sensor Selection by Application 

Object-oriented method. In this case you select the best product for the objected that will be detected by the sensor. A correct understanding of the intended application is necessary for this method.

Here are some examples of the topics you should have a thorough understanding of for the intended application [3]; 

Sensing object, ex ; 

size
• • Size
material
• • Material
shape 
• • Shape 
surface
• • Surface conditions 
moving
• • Moving speed 

Detection purpose, ex ; 

presence
• • Presence/ absence detection
color
• • Color detection 
shape
• • Shape detection 
liquid
• • Liquid level 

References

[1] "The Selection of Sensors", Science Direct, 2020. [Online]. Available: https://www-sciencedirect-com.proxy.lib.uwaterloo.ca/science/article/pii/S0079642500000116#aep-section-id22. [Accessed: 17- Nov- 2020].

[2] "Basics of Sensor Selection", Panasonic Electric Works, 2020. [Online]. Available: https://www.panasonic-electric-works.com/pew/ch/it/downloads/ti_choose_right_sensor_en.pdf. [Accessed: 17- Nov- 2020].

[3] "Basics of Sensor Selection", Panasonic Electric Works, 2020. [Online]. Available: https://www.panasonic-electric-works.com/pew/ch/it/downloads/ti_choose_right_sensor_en.pdf. [Accessed: 17- Nov- 2020].