Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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PSD sensor array design for the 3D measurement of moving objects

이동 물체의 3차원 계측을 위한 PSD 센서 배열 설계

  • Kim, Jon-Man (School of Electronic Engineering, Daegu University) ;
  • Do, Yong-Tae (School of Electronic Engineering, Daegu University)
  • 김종만 (대구대학교 정보통신대학 전자공학부) ;
  • 도용태 (대구대학교 정보통신대학 전자공학부)
  • Published : 2008.03.31
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Abstract

Perceiving a 3D moving target is important for automated machines including robots in a factory. Although stereovision or ultrasonic ranging is often employed for the purpose, the former requires high-cost systems, and the latter suffers from low-resolution. In this paper, we propose a PSD sensor array to acquire the 3D profile of an object conveyed by a belt. Rectangular parallelepiped target objects at random positions and orientations are assumed. Nine PSD sensors are configured in a $3{\times}3$ array above the belt, and fired in a sequence so that cross-talk can be avoided. Time gaps among sensor readings are compensated to get a result that is obtainable when sensors' measurements are made simultaneously along a sensing line. The system designed is tested with various objects in experiments.

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References

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