Title :
Development of the Triple Ring Body Surface Laplacian Sensor and its Experimental Study
Author :
Yu-zhen, Cao ; Shi-jiu, JIN ; Gang, Li ; Besio, W.G.
Author_Institution :
Sch. of Precision Instrum. & Opto-Electron. Eng., Tianjin Univ.
Abstract :
The Laplacian of the body surface potentials (Laplacian ECG-LECG) is a new approach to resolve spatially distributed bioelectric sources. LECG is a weak signal so an LECG sensor needs a good signal-to-noise ratio (SNR) and high common mode rejection ratio (CMRR). In this paper, we discuss a LECG sensor, which integrated tripolar concentric ring electrodes and signal conditioning circuit on a printed circuit board. The experimental results are in agreement with the theoretical calculations suggesting the feasibility of measuring the surface Laplacian. This lays the foundation for using such a device to assist in heart disease diagnoses
Keywords :
bioelectric potentials; biomedical electrodes; diseases; electric sensing devices; electrocardiography; medical signal processing; patient diagnosis; signal processing equipment; body surface potentials; common mode rejection ratio; heart disease diagnoses; printed circuit board; signal conditioning circuit; signal-to-noise ratio; spatially distributed bioelectric sources; triple ring body surface Laplacian sensor; tripolar concentric ring electrodes; Bioelectric phenomena; Biosensors; Electric potential; Electrodes; Integrated circuit measurements; Laplace equations; Printed circuits; Signal resolution; Signal to noise ratio; Spatial resolution; Body surface ECG; Concentric ring electrode; Surface Laplacian;
Conference_Titel :
Engineering in Medicine and Biology Society, 2005. IEEE-EMBS 2005. 27th Annual International Conference of the
Conference_Location :
Shanghai
Print_ISBN :
0-7803-8741-4
DOI :
10.1109/IEMBS.2005.1616190
