PURPOSE: To make it possible to supplementarily supply power to a transportation equipment, etc., by vibrating the transportation equipment with a suspension or obtaining vibration by letting it run and then by obtaining electromotive force or vibration signals due to electromagnetic induction.

CONSTITUTION: Electromotive force taken by using a suspension generator comprises a suspension moving section (piston 2, etc.) provided with a magnet and coils 3 for generating electromotive force which are installed around a suspension moving section fixing section (cylinder 4, etc.) is obtained as a vibration information signal or for supplying power. In other words, by vibrating a transportation equipment with a suspension, etc., or by obtaining vibration by letting it run, electromotive force or a vibration signal can be obtained due to electromagnetic induction. By this method, power can be supplementarily supplied to the transportation equipment, etc.