Open AccessA Multi-Channel Data Acquisition System for Capacitive Sensing
Author(s) -
Jianke Li,
Yixuan Zhao,
Jianfeng Li,
Aihua Hu,
Ruoyan Wei,
Changshui Zhang
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1213/5/052102
Subject(s) - capacitive sensing , data acquisition , channel (broadcasting) , capacitance , computer hardware , interface (matter) , computer science , resonator , electronic engineering , electrical engineering , engineering , physics , electrode , bubble , quantum mechanics , maximum bubble pressure method , parallel computing , operating system
Capacitive sensing can be applied to a variety of applications. A multi-channel data acquisition system for capacitive sensing was designed based on an FDC2214 with external L-C resonators. The FDC2214 was used for capacitance-to-digital converting by measuring the ratio of the resonator frequency to a reference frequency. Employing MSP430F5529 as host processor and the two-wire I 2 C serial bus interface connected with the FDC2214, the system implemented multi-channel data acquisition. As a test system, an 8-channel physical hardware device was provided. Experiments for gesture recognition had been done using the 8-channel capacitive sensing data acquisition system. The good experimental results verified the availability of the designed system.