Difference between revisions of "Projects:2015s1-28 Wireless Rotation Detector"

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(Proposed Approaches)
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#Arduino UNO Board
 
#Arduino UNO Board
 
#Power Detector
 
#Power Detector
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=== Hardware Design ===
 +
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*Understand the requirements and specifications of the hardware
 +
*Design the hardware in software such as HFSS
 +
*Fabricate the designed hardware
 +
*Measure the prototype and compare the measured results with simulation results
 +
*Redesign if the prototype does not meet requirements

Revision as of 15:45, 18 August 2015

Supervisors

Honours students


Project objects

Scope

  • Design and construct a portable wireless device which can accurately measure the speed of rotating object.

Specific Aims

  • Design and produce a metamaterial absorber with resonate frequency of 2.4GHz.
  • Design and fabricate a planar dual-antenna which can transmit and receive signals with limited crosstalk.
  • Design a software system which can calculate the rotation speed.

Background & Significance

  • Rotation speed measurement devices widely used in industries.
  • Current popular rotation speed measurement devices, such as laser tachometer, use visible light.
  • Can not use if line of sight blocked.
  • Intend to change – use Electromagnetic Wave instead
Fig. 1: Background & significance


Key Requirements

  • Metamaterial Absorber shall absorb at least 90% (-10db) power at 2.4GHz when it has same polarization with antenna.
  • Dual antennas shall work at 2.4GHz and the crosstalk between 2 antennas shall be less than -40dB.
  • Portable system shall be operational up to 50cm from the rotating object.
  • Portable system shall accurately measure the rotating object in both low and high speed.

Proposed Approaches

  • Method exploited - ‘Divide-And-Conquer’.
  • The entire project can be decomposed into several aspects.
  • Hardware (design required)
  1. Metamaterial Absorber
  2. Dual-Antennas
  • Software
  1. Calculation Algorithm for rotating speed
  2. GUI
  • Other Components (from market or school)
  1. VCO
  2. Arduino UNO Board
  3. Power Detector


Hardware Design

  • Understand the requirements and specifications of the hardware
  • Design the hardware in software such as HFSS
  • Fabricate the designed hardware
  • Measure the prototype and compare the measured results with simulation results
  • Redesign if the prototype does not meet requirements