A New Type of Self Driven Door Handle

A New Type of Self Driven Door Handle

Yiping Deng (Chongqing University of Science and Technology, Chongqing, China), Lu Liao (School of Electrical and Information Engineering, Chongqing University of Science and Technology, Chongqing, China), Chengguang Wu (Chongqing University of Science and Technology, Chongqing, China), Ying Wu (Chongqing University of Science and Technology, Chongqing, China), Xiaoyun Zhang (Chongqing University of Science and Technology, Chongqing, China), Junjie Bai (School of Electrical and Information Engineering, Chongqing University of Science and Technology, Chongqing, China & School of Instrument Science and Engineering, Southeast University, Nanjing, China), Gang Hu (Chongqing University of Science and Technology, Chongqing, China), Yuan Zhai (Chongqing University of Science and Technology, Chongqing, China) and Guang Zhu (Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, China)
Copyright: © 2017 |Pages: 13
DOI: 10.4018/IJSSCI.2017100105

Abstract

In this article, authors report on a smart door handle that can efficiently collect and utilize ambient energy to power itself. A Triboelectric Nanogenerator which presents characteristics including easy fabrication, small size and light weight is embedded in the door. When begin to turn the handle, the TENG can convert the mechanical energy into the electrical energy, and the power can up to 0.023W. At the same time, the internal circuit will send a single to identify the action of opening the door, and then the wireless receiver will make appropriate responses after receiving the signal. In this article, the authors designed a wireless transmission circuit to ensure that the transmitter and receiver can communicate in real time. Due to the TENG's output is AC signal which can't power the device directly, so the power management circuit was designed to process the signal. To analyze and compare the output signal, the authors designed two power management circuits. Both the circuits can convert the AC signal into the DC signal, the voltage can up to 5V and the current can up to 3mA.
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2. The Mechanism Of Friction Power Generation

Actually, the phenomenon of friction power generation has always been in our side, the friction effect is one of the most common phenomena in nature when two different materials are rubbed against each other and contacted with the surface. According to the previous experimental basis, it can be found that the performance of friction mainly depends on the material and structure. The perfect combination of structural precision design and special materials will play a role in generating electricity. First, their surface will produce positive and negative electrostatic charge due to the triboelectrification and electrostatic induction when two different materials contacts each other, as shown in Figure 1. When the two materials separated due to external mechanical force, the positive and negative charges generated by the contact effect are separated, which will result in an induced electromotive force on the upper and lower electrodes of the material. If the load is connected between the two electrodes or in a short circuit, this potential difference will drive the electrons between the two electrodes flowing through the external circuit. In this mechanism, the electrical energy can be used on the RF signal trigger processing circuit. This process is shown in Figure 1.

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