Direct-Write Printed Current Sensor for Load Monitoring Applications
| Autor: | Anming Hu, Stephen M. Killough, Aravind K. Mikkilineni, Pooran Chandra Joshi, Teja Kuruganti, Yongchao Yu |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Permalloy Data processing Thermoplastic Materials science Inkwell Fused deposition modeling business.industry 02 engineering and technology USB 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Flexible electronics 0104 chemical sciences law.invention chemistry law Optoelectronics Current sensor 0210 nano-technology business |
| Zdroj: | ISGT |
| Popis: | We report on a flexible current sensor development employing direct-write printing and additive manufacturing techniques. The integrated current sensor unit incorporates sensing, data processing & storage, and in-field calibration capabilities. A combination of direct-write printing technique and low-temperature curable metallic ink is used to print Ag wires around a $12.5-\boldsymbol{\mu} \mathbf{m}$ -thick permalloy film. The overall thickness of the polyimide substrate and permalloy sheet remains well-below $500\ \boldsymbol{\mu} \mathbf{m}$ enabling wrap-around sensor functionality. Fused deposition modeling (FDM) additive manufacturing is used to build custom parts for sensor mounting, encapsulation, and an in-field calibration unit using heat and chemical-resistant thermoplastic which responds well to mechanical stress. In the present configuration, the integrated current sensor unit can be powered through USB or 4 AAA batteries to allow data collection and sensor calibration in the field. The flexible current sensor employing a continuous sheet of the permalloy exhibited a well-behaved signal output response at peak current levels exceeding 15A and in the applied ac frequency range of 60 Hz–10 kHz. Overall, the combination of direct-write printing, thin permalloy material, and additive manufacturing technique shows promise for the development of a reconfigurable low-cost current sensor that can be deployed in large numbers at locations of interest to avail the cost and energy-saving opportunities in industrial/commercial and residential applications. |
| Databáze: | OpenAIRE |
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