Development of modular and sustainable electric locking devices using wireless and energy harvesting technologies

这项研究开发机电一体化的方法来设计和操作的完全模块化和自我维持的电子锁定设备（ELD的）。ELD是电子门安全设备，越来越多地用于现代建筑物中的自动访问控制。典型的ELD系统由电磁致动器（例如电锁（E-strike））、用户凭证读取器（例如接近读取器）和DC电源组成，它们都通过在墙壁和/或门框内延伸的电线和电缆连接。所提出的研究试图解决现有ELD系统产生的两个主要问题：1）与布线相关的劳动力和成本，以及2）在连续使用ELD期间累积的能量消耗。在所提出的研究中，我们试图通过将无线和能量收集技术结合到ELD中来解决这些问题，使得它们可以在组件之间没有任何电线连接的情况下操作，也没有任何外部电源，从而使ELD系统完全独立，模块化和自我维持。紧凑、可靠和安全的无线通信模块将被设计和配置为从凭证读取器远程控制E-strike。我们将共同研究正确和实用的能量收集机制，基于我们对可用能源的理解，例如门的机械运动，撞击板的摆动运动，关闭门时门框上的振动以及环境电磁波。

This research develops mechatronic approaches to the design and operation of fully modular and self-sustaining electronic locking devices (ELD's). ELD's are electronic door security devices that are increasingly used for automated access control in modern buildings. A typical ELD system consists of an electromagnetic actuator such as an electric strike (E-strike), a user credential reader (e.g. a proximity reader) and a DC power supply, which are all connected through wires and cables running inside walls and/or door frames. The proposed research attempts to resolve two major issues arising from the existing ELD systems: 1) labor and cost associated with cabling and 2) energy consumption accumulated over continual use of ELD's. In the proposed research, we attempt to resolve these issues by incorporating wireless and energy harvesting technologies into the ELD's such that they can operate without any wire connections among components and also without any external power source, thereby making an ELD system completely independent, modular and self-sustaining. Compact, reliable and secure wireless communication module will be devised and configured to control E-strike remotely from the credential reader. Together, we will investigate proper and practical energy harvesting mechanisms based on our understanding of available sources of energy such as mechanical motion of doors, swing motion of a strike plate, vibration on the door frame on closing door, and ambient electromagnetic waves.