A development of high sensitivity magnetic sensor based on giant magnetoresistance with simple implementation on smartphone

Adhi Kusumadjati , Sony Wardoyo , Agung Hirawan , Mochamad Ibnu Alwan , Ramandasoavina Blanchard


In this paper, the magnetic field-based sensor that can connect with smartphones through Bluetooth connectivity was developed. The design of this high sensitivity magnetic sensor system used Giant Magnetoresistance (GMR) sensors in the form of SOIC8 with AA002-02 series from NVE Corp. The results obtained from the measurements show that the sensor is able to work well when connected to an Android-based smartphone. Measurements were carried out by placing a magnet with a magnetic field strength of 0.4 T in the direction of the sensitivity plane of the GMR sensor. The result showed that the closer the magnet distance relative to the GMR sensor the more voltage signal output from the sensor. Since this developed method is simple but effective for detecting position of magnetic object, the further development of this method will be benefit for many applications.


Giant Magnetoresistance, Sensor, Magnet, Smartphone

Full Text:



Ardiyanti, H., Mabarroh, N., Wibowo, N. A., Istiqomah, N. I., Tumbelaka, R. M., Ulil Absor, Moh. A., & Suharyadi, E. (2023). New design of a commercial chip-based GMR sensor with magnetite nanoparticles for biosensing applications. Journal of Science: Advanced Materials and Devices, 8(2), 100556. https://doi.org/10.1016/j.jsamd.2023.100556

Choi, J., Gani, A. W., Bechstein, D. J. B., Lee, J.-R., Utz, P. J., & Wang, S. X. (2016). Portable, one-step, and rapid GMR biosensor platform with smartphone interface. Biosensors and Bioelectronics, 85, 1–7. https://doi.org/10.1016/j.bios.2016.04.046

Djamal, M., & Ramli, R. (2017). Giant Magnetoresistance Sensors Based on Ferrite Material and Its Applications. In Magnetic Sensors - Development Trends and Applications. InTech. https://doi.org/10.5772/intechopen.70548

Guedes, A., Macedo, R., Jaramillo, G., Cardoso, S., Freitas, P., & Horsley, D. (2018). Hybrid GMR Sensor Detecting 950 pT/sqrt(Hz) at 1 Hz and Room Temperature. Sensors, 18(3), 790. https://doi.org/10.3390/s18030790

Huang, C.-C., Lin, C.-L., Kao, J.-J., Chang, J.-J., & Sheu, G.-J. (2018). Vehicle Parking Guidance for Wireless Charge Using GMR Sensors. IEEE Transactions on Vehicular Technology, 67(8), 6882–6894. https://doi.org/10.1109/TVT.2018.2827069

Jogschies, L., Klaas, D., Kruppe, R., Rittinger, J., Taptimthong, P., Wienecke, A., Rissing, L., & Wurz, M. (2015). Recent Developments of Magnetoresistive Sensors for Industrial Applications. Sensors, 15(11), 28665–28689. https://doi.org/10.3390/s151128665

Kapser, K., Weinberger, M., Granig, W., & Slama, P. (2013). GMR Sensors in Automotive Applications (pp. 133–156). https://doi.org/10.1007/978-3-642-37172-1_6

Kilgore, B. (2017). A Wideband Magnetoresistive Sensor for Monitoring Dynamic Fault Slip in Laboratory Fault Friction Experiments. Sensors, 17(12), 2790. https://doi.org/10.3390/s17122790

Kittmann, A., Durdaut, P., Zabel, S., Reermann, J., Schmalz, J., Spetzler, B., Meyners, D., Sun, N. X., McCord, J., Gerken, M., Schmidt, G., Höft, M., Knöchel, R., Faupel, F., & Quandt, E. (2018). Wide Band Low Noise Love Wave Magnetic Field Sensor System. Scientific Reports, 8(1), 278. https://doi.org/10.1038/s41598-017-18441-4

NVE Corporation. (2019). AA/AB-Series Analog Magnetic Sensors AA/AB-Series Analog Magnetic Sensors Equivalent Circuit. www.nve.com

Patankar, K. K., Jadhav, P., & Gayakvad, K. (2022). Introduction and applications of magnetic nanoparticles. In Fundamentals and Industrial Applications of Magnetic Nanoparticles (pp. 3–39). Elsevier. https://doi.org/10.1016/B978-0-12-822819-7.00017-X

Pelegrí Sebastiá, J., Alberola Lluch, J., & Lajara Vizcaíno, J. R. (2007). Signal conditioning for GMR magnetic sensors. Applied to traffic speed monitoring GMR sensors. Sensors and Actuators, A: Physical, 137(2), 230–235. https://doi.org/10.1016/j.sna.2007.03.003

Ripka, P. (2013). Security applications of magnetic sensors. Journal of Physics: Conference Series, 450, 012001. https://doi.org/10.1088/1742-6596/450/1/012001

Ripka, P., & Arafat, M. M. (2019). Magnetic Sensors: Principles and Applications. In Reference Module in Materials Science and Materials Engineering. Elsevier. https://doi.org/10.1016/B978-0-12-803581-8.11680-7

Texas Instruments. (2022). INA118 Precision, Low-Power Instrumentation Amplifier. https://www.ti.com/lit/ds/symlink/ina118.pdf

DOI: https://doi.org/10.58524/app.sci.def.v1i3.280


  • There are currently no refbacks.

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.