title: Heart rate estimation from FBG sensors using cepstrum analysis and sensor fusion.
abstract: This paper presents a method of estimating heart rate from arrays of fiber Bragg grating (FBG) sensors embedded in a mat. A cepstral domain signal analysis technique is proposed to characterize Ballistocardiogram (BCG) signals. With this technique, the average heart beat intervals can be estimated by detecting the dominant peaks in the cepstrum, and the signals of multiple sensors can be fused together to obtain higher signal to noise ratio than each individual sensor. Experiments were conducted with 10 human subjects lying on 2 different postures on a bed. The estimated heart rate from BCG was compared with heart rate ground truth from ECG, and the mean error of estimation obtained is below 1 beat per minute (BPM). The results show that the proposed fusion method can achieve promising heart rate measurement accuracy and robustness against various sensor contact conditions.
authors.forename: Yongwei
authors.initials: Y
authors.lastname: Zhu
authors.forename: Victor Foo Siang
authors.initials: VF
authors.lastname: Fook
authors.forename: Emily Hao
authors.initials: EH
authors.lastname: Jianzhong
authors.forename: Jayachandran
authors.initials: J
authors.lastname: Maniyeri
authors.forename: Cuntai
authors.initials: C
authors.lastname: Guan
authors.forename: Haihong
authors.initials: H
authors.lastname: Zhang
authors.forename: Eugene Phua
authors.initials: EP
authors.lastname: Jiliang
authors.forename: Jit
authors.initials: J
authors.lastname: Biswas
mesh_terms: D000328:Adult; D001450:Ballistocardiography / Q000379:methods; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D012815:Signal Processing, Computer-Assisted; D059629:Signal-To-Noise Ratio; D055815:Young Adult