TY - JOUR
T1 - A Virtual Accelerometer Array Using One Device Based on Time Domain Measurement
AU - Li, Enfu
AU - Shen, Qiang
AU - Hao, Yongcun
AU - Chang, Honglong
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/8/1
Y1 - 2019/8/1
N2 - This paper reports for the first time a virtual accelerometer array using one device based on time domain measurement. The device can simultaneously offer multiple acceleration measurements, thus implementing a virtual array. The acceleration is calculated by measuring the time intervals between triggering events generated when a harmonically oscillating mass-on-spring passes a set of predefined displacement reference points. The multiple measurements are obtained by predefining multiple sets of displacement reference points and measuring the corresponding time intervals. Accuracy is improved via combining all the measurements. The amplitude and frequency of the oscillation trajectory, trigger gap selection, and predefined displacement reference points are analyzed in detail. Finally, a virtual accelerometer array comprising six component sensors is implemented to test its performance. The experimental results show that the 1σ noise, noise floor, and velocity random walk of the virtual accelerometer are reduced by factors of 4.45, 1.29, and 1.36, respectively, compared with the individual component sensor.
AB - This paper reports for the first time a virtual accelerometer array using one device based on time domain measurement. The device can simultaneously offer multiple acceleration measurements, thus implementing a virtual array. The acceleration is calculated by measuring the time intervals between triggering events generated when a harmonically oscillating mass-on-spring passes a set of predefined displacement reference points. The multiple measurements are obtained by predefining multiple sets of displacement reference points and measuring the corresponding time intervals. Accuracy is improved via combining all the measurements. The amplitude and frequency of the oscillation trajectory, trigger gap selection, and predefined displacement reference points are analyzed in detail. Finally, a virtual accelerometer array comprising six component sensors is implemented to test its performance. The experimental results show that the 1σ noise, noise floor, and velocity random walk of the virtual accelerometer are reduced by factors of 4.45, 1.29, and 1.36, respectively, compared with the individual component sensor.
KW - Accelerometer
KW - sensor array
KW - time domain measurement
KW - virtual accelerometer
UR - http://www.scopus.com/inward/record.url?scp=85068722496&partnerID=8YFLogxK
U2 - 10.1109/JSEN.2019.2911984
DO - 10.1109/JSEN.2019.2911984
M3 - 文章
AN - SCOPUS:85068722496
SN - 1530-437X
VL - 19
SP - 6067
EP - 6075
JO - IEEE Sensors Journal
JF - IEEE Sensors Journal
IS - 15
M1 - 8693749
ER -