Self‐Powered Vibration Sensing and Energy Harvesting via Series‐Resistor‐Enhanced Triboelectric Nanogenerators with Charge Compensation for Autonomous Alarm Systems

The ability to efficiently harvest energy while accurately sensing signals with a single device is a critical focus in self‐powered vibration monitoring systems and an urgent requirement for the highly integrated development of the Internet of Things (IoT). This work presents a triboelectric nanogenerator that combines energy harvesting with vibration signal sensing (SE‐TENG). By connecting a sensing resistor with a sensing triboelectric nanogenerator (S‐TENG) in series and using the S‐TENG as a pump‐TENG to provide charge to the energy harvesting triboelectric nanogenerator (E‐TENG), this approach effectively utilizes the energy from the S‐TENG component, reducing energy loss. Under vibration excitation with 0.6 mm amplitude, the output voltage of SE‐TENG remains above 200 V in 12–30 Hz. Additionally, we implement an external limiter strategy to limit the displacement of the moving part, which optimizes the waveform of the sensing signal. Based on SE‐TENG, we have successfully realized self‐driven wireless temperature and humidity monitoring, self‐driven vibration frequency sensing alarm, and self‐driven amplitude monitoring alarm. This work provides a new idea for TENG to get both energy and signal in the field of vibration energy collection and sensing, and has potential application in the integrated development of the IoT.