Difference between revisions of "Projects:2015s1-28 Wireless Rotation Detector"
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*Intend to change – use Electromagnetic Wave instead | *Intend to change – use Electromagnetic Wave instead | ||
[[File: Background_&_significance.PNG|thumb|300px|left|'''Fig. 1:''' Background & significance]] | [[File: Background_&_significance.PNG|thumb|300px|left|'''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) | ||
+ | |||
+ | *** Metamaterial Absorber | ||
+ | *** Dual-Antennas |
Revision as of 17:45, 17 August 2015
Contents
Supervisors
Honours students
- 2015: Guowei Deng and Shuopeng Wang, see Wireless Rotation Detector
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
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)
- Metamaterial Absorber
- Dual-Antennas