Design and manufacturing analysis of resonantly coupled circuits and other components used for wireless benefit-denial system

A new benefit-denial system using RFID technology and inductive heating is under development by ProTeqt Technologies. During the deactivation process, an enabler receives electromagnetic waves and turns the energy to heat, causing the polymeric material inside to expand and create force. An LC circuit in the locking mechanism, acting as a weakly coupled electromagnetic resonator, is used to improve energy transfer efficiency. The design of the LC circuit, as well as the measurement of the resulting force is presented. Due to the manufacturing variability of each component, the force generated by the enabler in the lock is uncertain. In the thesis, an analysis of the manufacturing variability and the distribution of the resulting force was conducted. A simulation model was developed to predict the robustness of the lock system. The test results show that the force generated is significantly more than the force needed, proving that the unlocking process is highly reliable. The result generated by the simulation validates the force test results.

Department dc:contributor.department

Massachusetts Institute of Technology. Department of Mechanical Engineering.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2013

Author dc:creator

• Zhu, Tianyu, M. Eng. Massachusetts Institute of Technology

Advisor dc:contributor.advisor

• David E. Hardt.

• Mechanical Engineering.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/85543

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/85543