A MEMS EVEH-Assisted Long-Range RFID Tag System for Applications with Low-Frequency Vibrations

Yingxian Lu (1) , Frédéric Marty (2, 1) , Dimitri Galayko (3) , Jean-Marc Laheurte (1) , Philippe Basset (1)

1 ESYCOM - Electronique, Systèmes de communication et Microsystèmes
2 ESIEE Paris
3 CIAN - Circuits Intégrés Numériques et Analogiques

We report an energy-autonomous Radio Frequency IDentification (RFID) tag system which is powered by an electrostatic MEMS-based Vibration Energy Harvester (e-VEH). The VEH is designed specifically for the vibrations of low frequency around 10 Hz. An energy of 80 nJ/cycle can be delivered when the VEH is loaded with an optimal resistor and a bias of 20 V. An RFID chip is powered by the current released from a 1-μF capacitor, which is charged by the VEH through a diode rectifier. The read range of the tag is increased from 2.5 m (under batteryless mode) to 15 m when powered by the VEH working with an acceleration of 2 grms and 10 Hz. The energy of the VEH stored in the capacitor within 40 s can sustain up to 3 tag readings.

Mots clés: low frequency; electrostatic vibration energy harvester; RFID communication tag; energy management circuit; impedance mismatch

Domaines: Micro et nanotechnologies/Microélectronique

Yingxian Lu, Frédéric Marty, Dimitri Galayko, Jean-Marc Laheurte, Philippe Basset. A MEMS EVEH-Assisted Long-Range RFID Tag System for Applications with Low-Frequency Vibrations. Eurosensors 2017, Sep 2017, Paris, France. pp.582, ⟨10.3390/proceedings1040582⟩. ⟨hal-02426284⟩