A Universal Power Management Strategy Based on Novel Sound‐Driven Triboelectric Nanogenerator and Its Fully Self‐Powered Wireless System Applications

Abstract

With the development of the Internet of Things (IoT), the power supply to trillions of IoT nodes has become a serious challenge. It is of significant importance to propose a rational power management scheme for constructing fully self‐powered systems using triboelectric nanogenerators (TENG). In this study, as inspired by an embroidery hoop, a new type of TENG without the Helmholtz resonant cavity is developed for collecting sound energy, which can generate the Voc and Isc up to 500 V and 124 µA, respectively at a resonance frequency of 170 Hz and sound pressure of 110 dB. Furthermore, the sound‐driven TENG integrated with a specially designed power management circuit derived from the universal power management strategy (PMS) can successfully drive a commercial narrow band‐IoT wireless node, which realizes periodic temperature and humidity data acquisition and transmission. With the same strategy, an electric switch and a temperature and humidity acquisition system based on Bluetooth technology can also be powered by a contact‐separated TENG and a wind‐driven TENG, demonstrating excellent versatility, adaptability, and universality of the PMS. This study provides a novel solution for the application of TENG in the field of low‐frequency IoT in local and wide areas.

Intelligent Sound Monitoring and Identification System Combining Triboelectric Nanogenerator‐Based Self‐Powered Sensor with Deep Learning Technique

“…Figure 2a shows the schematic drawing of a SDTENG, with a sandwiched structure that can be embedded on a support. [29] As illustrated in Figure 2b, the SDTENG is made up of an acrylic shell, conductive fabrics, fluorinated ethylene propylene (FEP) membranes, and Kapton spacers. Conductive fabric has the merits of lightweight and ease of fabrication, making it a good alternative as the left and right electrodes of the SDTENG.…”

Large-Scale Lever-Based Triboelectric Nanogenerator for Sensing Lateral Vibration and Wrist or Finger Bending for Controlling Shooting Game

“…Increasing the contact surface area of the dielectric or that of the counter material is another method for increasing the output in the first stage. Recently, some researchers have succeeded in generating high electrical output by using a power management integrated circuit (PMIC) as an auxiliary circuit [36][37][38]. Moreover, structural modification techniques were also adopted to effectively convert the limited input source into electrical energy.…”

Self-Powered Wireless Sensor Matrix for Air Pollution Detection with a Neural Predictor

“…The network learning results are presented collectively in Table 4 and graphically in Figure 24 for KNN. The data in Table 4 were calculated based on known formulas for Precision (11), Recall (12) Specificity (13), Accuracy (14) and F1 Score (15) presented in [52].…”

“…It is best to look for a combination of all three; however, only EH can extend the maintenance-free time of the platform in a non-linear way and even beyond the expected lifetime. Many research centers are working on self-powered sensing circuits for integrating wireless sensing, energy harvesting, power management and energy storage, and data processing [10,11].Research also includes the development of antennas [12], energy harvesting from unusual sources such as hydraulic vibrations [13] or even nanotribological sources [14]. Interestingly, according to [15], the use of multi-scale sensors and biosensors in the multisensor platform could significantly improve the quality of detection in medicine as well, more effectively identifying possible SARS-CoV-19 virus infections.…”