Self-Powered Wireless Temperature and Vibration Monitoring System by Weak Vibrational Energy for Industrial Internet of Things

Abstract

Developing self-powered smart wireless sensor networks by harvesting industrial environmental weak vibration energy remains a challenge and an impending need for enabling the widespread rollout of the industrial internet of things (IIoT). This work reports a self-powered wireless temperature and vibration monitoring system (WTVMS) based on a vibrational triboelectric nanogenerator (V-TENG) and a piezoelectric nanogenerator (PENG) for weak vibration energy collection and information sensing. Therein, the V-TENG can scavenge weak vibration energy down to 80 μm to power the system through a power management module, while the PENG is able to supply the frequency signal to the system by a comparison circuit. In an industrial vibration environment where the vibration frequency and amplitude are 20 Hz and 100 μm, respectively, the WTVMS can upload temperature and frequency information on the equipment to the cloud in combination with the narrowband IoT technology to realize real-time information monitoring. Furthermore, the WTVMS can work continuously for more than 2 months, during which the V-TENG can operate up to 100 million cycles, achieving ultrahigh stability and durability. By integrating weak vibration energy harvesting and active sensing technology, the WTVMS can be used for real-time online monitoring and early fault diagnosis of vibration equipment, which has great application prospects in industrial production, machinery manufacturing, traffic transportation, and intelligent IIoT.

Two Degrees of Freedom in Two Directions Structure Triboelectric Nanogenerator for Vibration Energy Harvesting and Self-Powered Sensing

“…Figure e shows the FFT analysis of vertical and horizontal TENG output voltage signals, where both can accurately indicate the 25 Hz main vibration frequency of the air compressor. In summary, Table S1 shows a comparison between the TFTD-TENG and other previous studies, ,,− ,,− the TFTD-TENG exhibits relatively higher and unique multidirectional output performance.…”

“…The environmental information such as vibration, noise, and temperature should be collected and further transmitted and processed . Mechanical vibration is not only an important sensing parameter but also has the potential to transfer the vibration energy to electric energy to power other sensors or electronic systems. − …”

3D Printing of Flexible BaTiO3/Polydimethylsiloxane Piezocomposite with Aligned Particles for Enhanced Energy Harvesting

“…Internet of Things (IoT) and wearable electronics have attracted much attention in sensing technology; − however, unsustainable power supply for such sensors has become a serious challenge for their applications. − Traditional power-generation strategies are restricted by lifetime and frequent replacement. − Piezoelectric energy harvesters can convert ambient mechanical energy into electrical energy through a piezoelectric effect. − Piezoelectric ceramics and polymers are mainly used for piezoelectric energy harvesting. , The applications of piezoelectric ceramics, such as lead zirconate titanate (PZT) and barium titanate (BaTiO 3 ), in flexible wearable electronics are still restricted due to their high brittleness, poor flexibility, and low durability. − On the contrary, piezoelectric polymers, especially poly­(vinylidene fluoride) (PVDF) and copolymers, are promising candidates for flexible electronic devices due to their excellent flexibility and thermal stability. , …”

Efficient cluster-based routing protocol for wireless sensor networks by using collaborative-inspired Harris Hawk optimization and fuzzy logic

“…Wireless Sensor Networks (WSNs) are widely utilized in environment monitoring [1], path planning [2], real-time monitoring [3], healthcare [4], industrial automation [5], and diverse domains owing to their capacity to operate effectively in harsh and remote environments. Comprised of numerous small, cost-effective sensor nodes, these networks have restricted processing, storage, and energy capacities.…”