scholarly journals Novel Absolute Displacement Sensor with Wide Range Based on Malus Law

Sensors ◽  
2009 ◽  
Vol 9 (12) ◽  
pp. 10411-10422 ◽  
Author(s):  
Wei Li ◽  
Xiaoping Lu ◽  
Yonggang Lin
Keyword(s):  
Displacement Sensor ◽  
Absolute Displacement ◽  
Wide Range

G100074 Development of Absolute Displacement Sensor for Measuring Long period and Large Amplitude

2011 ◽  
Vol 2011 (0) ◽  
pp. _G100074-1-_G100074-3
Author(s):  
Akihiko ITO ◽  
Mitsuru MIYAZAKI ◽  
Yuichi IWASAKI ◽  
Kazuo KATO ◽  
Kazuto SETO
Keyword(s):  
Large Amplitude ◽  
Displacement Sensor ◽  
Long Period ◽  
Absolute Displacement

scholarly journals Integrated Circuit Angular Displacement Sensor with On-chip Pinhole Aperture

Sensors ◽  
2020 ◽  
Vol 20 (6) ◽  
pp. 1794
Author(s):  
Udumbara Wijesinghe ◽  
Akash Neel Dey ◽  
Andrew Marshall ◽  
William Krenik ◽  
Can Duan ◽  
...  
Keyword(s):  
Integrated Circuit ◽  
Light Emitting Diode ◽  
Angular Displacement ◽  
Angular Position ◽  
Ease Of Use ◽  
Light Spot ◽  
Displacement Sensor ◽  
Wide Range ◽  
Pinhole Aperture ◽  
Physics Model

Sensors that remotely track the displacement of a moving object have a wide range of applications from robotic control to motion capture. In this paper, we introduce a simple, small silicon integrated circuit sensor that tracks the angular displacement of an object tagged with a small light source, such as a light-emitting diode (LED). This sensor uses a new angular transduction mechanism, differential diffusion of photoelectrons generated from the light spot cast by the light tag onto a Si anode, that is described by a simple physics model using pinhole optics and carrier diffusion. Because the light spot is formed by a pinhole aperture integrated on the sensor chip, no external focusing optics are needed, reducing system complexity, size, and weight. Prototype sensors based on this model were fabricated and their basic characteristics are presented. These sensors transduce angular displacement of an LED across orthogonal latitudinal and longitudinal arcs into normalized differential photocathode currents with signal linearly proportional to LED angular position across a ± 40° field-of-view. These sensors offer potential performance and ease-of-use benefits compared to existing displacement sensor technologies.

Sign in / Sign up

Export Citation Format

Share Document