iKey: An Intelligent Key System Based on Efficient Inclination Angle Sensing Techniques

  • Ke Lin
  • Jinbao WangEmail author
  • Jianzhong Li
  • Siyao Cheng
  • Hong Gao
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10874)


The elderly may have different aspects of inconvenience in their daily life. Among them, many old people have trouble remembering things even just happened hours ago. They often forget whether they have locked the door while leaving so that they may have to return and check. Such situation also happens to many younger people that do not concentrate their mind while locking the door. In this paper, an intelligent key system, iKey, is proposed to solve such problem. It can be deployed on an existing key to detect user’s locking actions and store locking status in the form of time. Related hardware architecture and working process are proposed. The sensing module based on inclination angle sensors is designed to reduce the amount of data generated. Furthermore, efficient locking detection algorithms are proposed accordingly. Such system and techniques can also be applied in knobs or rotating handles of machines and facilities to detect illegal operations and to avoid user’s forgetting to operate them.


Ubiquitous computing Cyber-physical system Human activity recognition 



This work is supported in part by the National Natural Science Foundation of China under Grant No. 61632010, 61502116, 61370217, and U1509216.


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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Ke Lin
    • 1
  • Jinbao Wang
    • 2
    Email author
  • Jianzhong Li
    • 1
  • Siyao Cheng
    • 1
  • Hong Gao
    • 1
  1. 1.School of Computer Science and TechnologyHarbin Institute of TechnologyHarbinChina
  2. 2.The Academy of Fundamental and Interdisciplinary SciencesHarbin Institute of TechnologyHarbinChina

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