A system for vibration energy collection and wireless temperature measurement of marine engine

The system for vibration energy collection and wireless temperature measurement of the marine engine comprises a vibration energy collection module, a temperature sensing module, a temperature collection and Bluetooth transmission module and a terminal display module. The vibration energy collection module comprises a piezoelectric vibration energy collection device and a rectification and voltagestabilization circuit; the piezoelectric vibration energy collection device is formed by compounding a plurality of linear vibration energy collection devices; the linear vibration energy collectiondevice comprises a piezoelectric bimorph beam and a mass block; the piezoelectric bimorph beam comprises an elastic layer, an upper piezoelectric layer and a lower piezoelectric layer, and the elasticlayer is arranged between the upper piezoelectric layer and the lower piezoelectric layer; the piezoelectric bimorph beam adopts a rectangular beam design, the polarization directions of the upper piezoelectric layer and the l