1. Performance of a speed bump piezoelectric energy harvester for an automatic cellphone charging system
- Author
-
Seong Do Hong, Jong Hyuk Eom, Jung Hwan Ahn, Jae Yong Cho, Sung Min Ko, Sang Bum Woo, Se Yeong Jeong, Wonseop Hwang, Jeong Pil Jhun, Tae Hyun Sung, Gyeong Ju Song, Kyung Bum Kim, Min Sik Woo, Deok Hwan Jeon, and Chan Ho Yang
- Subjects
Computer science ,business.industry ,020209 energy ,Mechanical Engineering ,Electric potential energy ,Electrical engineering ,Battery (vacuum tube) ,02 engineering and technology ,Building and Construction ,Management, Monitoring, Policy and Law ,law.invention ,Power (physics) ,Speed bump ,Capacitor ,General Energy ,020401 chemical engineering ,law ,0202 electrical engineering, electronic engineering, information engineering ,Electricity ,0204 chemical engineering ,business ,Energy harvesting ,Voltage - Abstract
We propose a piezoelectric energy harvesting technology installed in a roadway speed bump. We have installed a module that can charge mobile phones utilizing a speed bump piezoelectric harvester (SBPH), which is easy to apply to roads. A highly integrated module with 40 piezo-generators was fixed and installed at the center of the speed bump. When a medium-sized vehicle passed the module at a speed of 30 km/h, an output voltage of 144 Vmax, output current of 45.2 mAmax, and output power of 4086.08 mWmax (6.81 W/m2) were measured at a load resistance of 2 kΩ. When the vehicle passed over the SBPH nine times, it charged a capacitor (10,000 μF) to provide 6 V for about 200 s, and the charged electrical energy was enough to operate a cellphone. The self-controlled battery charging system via electricity generated by the piezoelectric module could be applied to a speed bump installed on an actual road.
- Published
- 2019
- Full Text
- View/download PDF