Design of an advanced signal conditioning unit for sensor with reduced off-the-shelf components

Sinha, Arun Kumar; Caviglia, Daniele D.; Gaur, Pankaj

doi:10.1109/icdcsyst.2012.6188728

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…Figure 5b presents a signal amplifier that can amplify the pulse wave signal to improve the SNR. It is possible to use C1 to adjust the gain of the amplifier [30]. In this study, an amplification of approximately 18 times is used for gain, calculated as represented in Equation ( 9), to determine the gain range of the pulse wave signal.…”

Section: Pulse Wave Detection Sensormentioning

confidence: 99%

An Arterial Compliance Sensor for Cuffless Blood Pressure Estimation Based on Piezoelectric and Optical Signals

Guo¹,

Chang²,

Wang³

et al. 2022

Micromachines

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Objective: Blood pressure (BP) data can influence therapeutic decisions for some patients, while non-invasive devices that continuously monitor BP can provide patients with a more comprehensive BP assessment. Therefore, this study proposes a multi-sensor-based small cuffless BP monitoring device that integrates a piezoelectric sensor array and an optical sensor, which can monitor the patient’s physiological signals from the radial artery. Method: Based on the Moens–Korteweg (MK) equation of the hemodynamic model, pulse wave velocity (PWV) can be correlated with arterial compliance and BP can be estimated. Therefore, the novel method proposed in this study involves using a piezoelectric sensor array to measure the PWV and an optical sensor to measure the photoplethysmography (PPG) intensity ratio (PIR) signal to estimate the participant’s arterial parameters. The parameters measured by multiple sensors were combined to estimate BP based on the P–β model derived from the MK equation. Result: We recruited 20 participants for the BP monitoring experiment to compare the performance of the BP estimation method with the regression model and the P–β model method with arterial compliance. We then compared the estimated BP with a reference device for validation. The results are presented as the error mean ± standard deviation (SD). Based on the regression model method, systolic blood pressure (SBP) was 0.32 ± 5.94, diastolic blood pressure (DBP) was 2.17 ± 6.22, and mean arterial pressure (MAP) was 1.55 ± 5.83. The results of the P–β model method were as follows: SBP was 0.75 ± 3.9, DBP was 1.1 ± 3.12, and MAP was 0.49 ± 2.82. Conclusion: According to the results of our proposed small cuffless BP monitoring device, both methods of estimating BP conform to ANSI/AAMI/ISO 81060-2:20181_5.2.4.1.2 criterion 1 and 2, and using arterial parameters to calibrate the MK equation model can improve BP estimate accuracy. In the future, our proposed device can provide patients with a convenient and comfortable BP monitoring solution. Since the device is small, it can be used in a public place without attracting other people’s attention, thereby effectively improving the patient’s right to privacy, and increasing their willingness to use it.

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Section: Pulse Wave Detection Sensormentioning

confidence: 99%

An Arterial Compliance Sensor for Cuffless Blood Pressure Estimation Based on Piezoelectric and Optical Signals

Guo¹,

Chang²,

Wang³

et al. 2022

Micromachines

View full text Add to dashboard Cite

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Exploring vulnerability of POSFETs

Sinha

Caviglia

2012

2012 Sixth International Conference on Sensing Technology (ICST)

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In this paper we present series of experimental results showing the vulnerability of tactile sensors called by name Piezoelectric Oxide Semiconductor Field Effect Transistors (POSFETs) toward light and bare touch. In fact these sensors have customized transistors on exposed silicon substrate/well. The result shows that by using a naked sensor chip for sensing, as was done in past works can give errors in results. We have proposed a cover layer i.e., a non-transparent sheet of silicone rubber, to shield the sensor chip from noises due to light and bare touch

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Measurement of piezoelectric based tactile sensor using low cost setup

Sinha

2013

2013 International Conference on Signal Processing and Communication (Icsc)

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In this paper we have presented measurement results of a piezoelectric based tactile sensor. We have used customized signal conditioning board to record the sensor output. And linear actuator to apply mechanical displacement on the sensor, during our experiments we have used non-transparent silicone rubber sheet to cover the tactile sensor. The results show that linear actuator can successfully test the sensor at low fr equencies and hence can be a suitable cost effective setup. The overall setup is very cheap, compared to the setup used in the past for similar purposes.

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Design of an advanced signal conditioning unit for sensor with reduced off-the-shelf components

Cited by 3 publications

References 7 publications

An Arterial Compliance Sensor for Cuffless Blood Pressure Estimation Based on Piezoelectric and Optical Signals

An Arterial Compliance Sensor for Cuffless Blood Pressure Estimation Based on Piezoelectric and Optical Signals

Exploring vulnerability of POSFETs

Measurement of piezoelectric based tactile sensor using low cost setup

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