Improvements in or relating to micro-power systems for a self-powered monitoring sensor

摘要

Described herein is a tyre pressure monitoring system (500) that includes an energy harvesting module (510) and a computer board (540). The energy harvesting module (510) comprises an energy harvesting unit (520) having a combined vibration energy/RF energy harvester. A single sensing element is used for both vibration energy harvest and for RF communication including RF energy harvesting. Energy harvested is transmitted to power management module (130) which powers components of the energy harvesting module (510). Data relating to sensor output from the single sensing element is transmitted to a microcontroller (150) and transmitted to a microprocessor unit (230) on the computer board (540).