TY - GEN
T1 - Characteristics of vision-based on-chip pressure sensor with different concentrations of sensing fluid
AU - Hesse, Frederike
AU - Tsai, Chia-Hung
AU - Kaneko, Makoto
PY - 2015/9/2
Y1 - 2015/9/2
N2 - A microfluidic, vision-based pressure sensor is tested with three different concentrations of coloured solution, which serves as sensing fluid for the sensor. The sensor is based on the deformation of the a polymeric chamber, which causes the sensing fluid to flow in or out of the sensing area, resulting in a change of colour intensity. That change is recorded by a digital camera and the average darkness of the sensing area is calculated from each frame. Pressure and darkness value are highly correlated, with an absolute correlation of 0.9293 or higher. Thus, for each colour concentration a linear transfer function is determined. The different concentrations greatly differ by the correlation factor, which is defined as the slope on its darkness-pressure plot. The 30% solution's correlation factor is about 3 times lower than the 5% solution's factor, resulting in a 3 times finer resolution of 2.2 kPa on average.
AB - A microfluidic, vision-based pressure sensor is tested with three different concentrations of coloured solution, which serves as sensing fluid for the sensor. The sensor is based on the deformation of the a polymeric chamber, which causes the sensing fluid to flow in or out of the sensing area, resulting in a change of colour intensity. That change is recorded by a digital camera and the average darkness of the sensing area is calculated from each frame. Pressure and darkness value are highly correlated, with an absolute correlation of 0.9293 or higher. Thus, for each colour concentration a linear transfer function is determined. The different concentrations greatly differ by the correlation factor, which is defined as the slope on its darkness-pressure plot. The 30% solution's correlation factor is about 3 times lower than the 5% solution's factor, resulting in a 3 times finer resolution of 2.2 kPa on average.
KW - microfluidic application
KW - on-chip pressure sensor
KW - vision-based sensor
UR - http://www.scopus.com/inward/record.url?scp=84955286876&partnerID=8YFLogxK
U2 - 10.1109/ICMA.2015.7237539
DO - 10.1109/ICMA.2015.7237539
M3 - Conference contribution
AN - SCOPUS:84955286876
T3 - 2015 IEEE International Conference on Mechatronics and Automation, ICMA 2015
SP - 517
EP - 522
BT - 2015 IEEE International Conference on Mechatronics and Automation, ICMA 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 12th IEEE International Conference on Mechatronics and Automation, ICMA 2015
Y2 - 2 August 2015 through 5 August 2015
ER -