A setup for measuring the centering error of a dual-element pyroelectric infrared sensor module

Vu Toan Thang, Vu Van Quang, Ngoc Tam Bui

Research output: Contribution to journalArticlepeer-review

Abstract

This paper presents an experimental setup to measure the horizontal centering error of a pre-built pyroelectric infrared (PIR) sensor module, in which a dual-element PIR sensor is aligned at the focal point of a single-zone Fresnel Lens. In the setup, the sensor module was placed facing a modulated infrared radiating source and turned over a range of horizontal angles. The position of the optical axis of the sensor module was determined based on the analysis of the output response of the sensor at turned angles. Thus, the horizontal centering error of the module is defined as the difference between the mechanical axis of the housing and the found optical axis. For the prebuilt sensor module, with the specific available equipment, the measurement of the centering error of the module achieved a resolution of 0.02 degrees.

Original languageEnglish
Article number6684
JournalSensors
Volume21
Issue number19
DOIs
Publication statusPublished - 2021 Oct 1

Keywords

  • Centering error
  • Dual-element PIR Sensor
  • Fresnel lens
  • Infrared radiation
  • Modulation
  • Optical axis

ASJC Scopus subject areas

  • Analytical Chemistry
  • Information Systems
  • Atomic and Molecular Physics, and Optics
  • Biochemistry
  • Instrumentation
  • Electrical and Electronic Engineering

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