Touch Location Error Analysis of a Low-Cost Piezoresistive Array Sensor D s k Maliyetli Bir Piezodiren Dizili Sens r n Dokunma Konum Hatasi Analizi

ALTUN K., Sarp M. O.

33rd IEEE Conference on Signal Processing and Communications Applications, SIU 2025, İstanbul, Türkiye, 25 - 28 Haziran 2025, (Tam Metin Bildiri) identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Doi Numarası: 10.1109/siu66497.2025.11112227
  • Basıldığı Şehir: İstanbul
  • Basıldığı Ülke: Türkiye
  • Anahtar Kelimeler: accuracy and precision, error characterization, piezoresistive sensor, touch sensing
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

In this paper, we investigate error characteristics of touch location for a very low-cost piezoresistive array sensor. The act of touch is performed by placing 100 g and 150 g weights on two different sensors designed as 5x5 and 7x7 array formations. Center of pressure calculation is performed two different ways; by using the whole measurement matrix and one of its submatrices. The accuracy and precision of the sensor is reported qualitatively, with a visual representation. It is demonstrated that 7x7 sensor and the submatrix give better results as compared to their alternatives.