2021 年 29 巻 3 号 p. 589-594
The IoT used in recent years often uses a button battery or the like, but it has disadvantages in terms of labor and cost of replacement. In addition, IoT applications include the detection and monitoring of abnormalities in rotating machinery. These systems are composed of sensors, wireless modules, and power supplies. There is a demerit in the wiring of the comparator point. Therefore, we are conducting research on vibration power generation to replace these batteries. In this research, speed is detected from the voltage generated by the vibration power generation device, and at the same time, wireless communication is performed using the generated power. This time, we constructed a self-sensing system that generates such self-power and detects and transmits the speed change of the target. Then, this operation was verified.
