A Capsule-Shaped Triboelectric Nanogenerator for Self-Powered Health Monitoring of Traffic Facilities

Abstract

Structure health monitoring is very essential for the safe operation of traffic facilities, like bridges and railways. However, establishing real-time monitoring and early event detection with a simple sensor device that does not require an external power supply remains a crucial challenge. Here, a self-powered sensor based on a capsule-shaped triboelectric nanogenerator (CS-TENG) with a cavity structure is constructed to monitor the structural health of the traffic. With an open-circuit voltage of 30.3 V and a high sensitivity to distance (precise to 1 mm) and pressure (0.86 V/kPa), the CS-TENG manifests superb performance and long service life. A self-powered bridge health monitoring system and a turnout monitoring system are proposed based on the CS-TENG, and the practicability of CS-TENG in the application of the above monitoring system is also investigated on the spot. Benefiting from the characteristic of the CS-TENG, negligible changes in external forces can be detected, and the state of traffic facilities may be recognized in real-time. Then, the real-time results can be displayed to alert personnel to issues with bridges and other road infrastructure, revealing its potential for smart traffic facilities.

Self‐Powered Position Monitoring System Based on Insole‐Type Wearable Triboelectric Nanogenerator and Bluetooth Beacon

“…Fabrication of the IW-TENG: The IW-TENG is created in the same manner as a typical adult insole, utilizing a pliable substrate, electrodes, and a triboelectric layer assembled with several material layers. The surface area of the individual layer is 160 cm, [2] with the triboelectric region comprising 119.4 cm. [2] The substrate is shaped into an insole form (28 cm × 8.5 cm) by laser cutting 0.4 mm flexible PET, and a copper electrode is secured to it.…”

“…The surface area of the individual layer is 160 cm, [ 2 ] with the triboelectric region comprising 119.4 cm. [ 2 ] The substrate is shaped into an insole form (28 cm × 8.5 cm) by laser cutting 0.4 mm flexible PET, and a copper electrode is secured to it. A triboelectric layer of 50 µm thickness PTFE is applied to the copper electrode surface, then polarized at 10 KV high voltage for 5 min.…”

“…With the advancement of internet of things and wireless sensing technology, the need for personnel track and position monitoring are greatly increasing. [1][2][3] Commercial Global positioning system (GPS) and Global system for mobile communications DOI: 10.1002/admt.202300487 (GSM) position methods cannot meet the demand for low power consumption and three-dimensional indoor location monitoring. Therefore, it cannot meet the needs of indoor positioning environments in some specific scenarios, such as office buildings and exhibition halls.…”

“…[6,7] However, the high dependence of BLE on external power sources during operation limits their further development. [2,8] Thus, for personnel position monitoring technology, using human kinetic energy harvesting for power supply could be a suitable solution.…”

Triboelectric Nanogenerator Enabled Wearable Sensors and Electronics for Sustainable Internet of Things Integrated Green Earth

“…Aside from monitoring the vehicles directly through the embedded sensors, TENGs can be assembled onto roads for traffic surveillance as well. [376][377][378][379][380] Figure 18e presents a selfpowered wireless traffic volume sensing system composed of a rotating-disk-based hybridized triboelectric and electromagnetic nanogenerator, a wireless transmitter, and a counter. [381] As a motor vehicle passes through the tunnel, a flowing wind will be produced to activate the hybridized nanogenerator, which can light up a globe light at a wind speed generated by an 8 m s −1 moving car.…”