Power generating device array and system, and method for manufacturing the same

A power generating device array and system, and method for manufacturing the same are provided to generate electricity of broadband frequency and transfer it to a ubiquitous sensor network. The electricity generating element array(100) comprises a substrate(90) and electricity generating elements(100a, 100b, 100c, 100d, 100e, 100f, 100g, 100h). The electricity generating element is arranged in the top of the substrate as the array shape. The electricity generating elements are the electricity of the different frequencies generated by piezoelectricity. One end of electricity generating elements moves freely and the other end is fixed to the substrate. One end of electricity generating elements has the inertial mass. The electricity generating system comprises electricity generating element array and an electric apparatus. The electric apparatus uses the electricity of the electricity generating element array.