Estimated Blood Pressure Algorithm for a Wrist-wearable Pulsimeter Using Hall Device

Lee, Sang-Suk; Son, Il-Ho; Choi, Jong-Gu; Nam, Dong Hyun; Hong, Yi; Woobeom, Lee

doi:10.3938/jkps.58.349

Cited by 24 publications

(15 citation statements)

References 1 publication

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“…4, two pulse waveforms to detect the pulse wave of the user are electronically connected to the display monitor. The PBFV can be calculated L H of a hand length from artery wrist to index finger divided into ∆τ that is two waveforms highest peak times and can also be used to estimate blood pressure by analyzing these results [2,14].…”

Section: Resultsmentioning

confidence: 99%

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Peripheral Blood Flow Velocity and Peripheral Pulse Wave Velocity Measured Using a Clip-type Pulsimeter Equipped with a Permanent Magnet and a Hall Device

Kim¹,

Lee²

2015

Journal of Magnetics

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We measured radial arterial pulse signals using a prototype of a clip-type pulsimeter equipped with a permanent magnet and a Hall device, which produced signals through a voltage-detecting circuit. The systolic peak time and the reflective peak time for a temporally pulsed signal were analyzed for an arbitrary pulse wave at one position of a small permanent magnet. The measured value of the peripheral pulse wave velocity was about 1.25-1.52 m/s, demonstrating the accuracy of this new method. To measure the peripheral blood flow velocity, we simultaneously connected the radial artery pulsimeter to a photoplethysmography meter. The average value of the peripheral blood flow velocity was about 0.27-0.50 m/s.

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Section: Resultsmentioning

confidence: 99%

“…The pulse waveform analysis of 1000 points/s can be transmitted to a PC. The repeated pulse waveforms having 5 sections after selected one section were calculated by a user algorithm program through the clip-type pulsimeter [13,14].…”

Section: Experimental Methodsmentioning

confidence: 99%

Peripheral Blood Flow Velocity and Peripheral Pulse Wave Velocity Measured Using a Clip-type Pulsimeter Equipped with a Permanent Magnet and a Hall Device

Kim¹,

Lee²

2015

Journal of Magnetics

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“…By determining the deviation in magnetic field intensities between two magnets, we were able to verify that magnetic field intensity measurements vary with magnet type in a distance-dependent manner. The closer the magnet was to the sensor, the greater the deviation [4]. …”

Section: Acquisition Of the Pulse Wave Using The Clip-type Pulsimetermentioning

confidence: 99%

“…The development of medical devices for bio-signal monitoring of pulse frequency, heart rate, the blood velocity, SPWV, and blood pressure is a prerequisite for the U-health-care industry [4]. Through periodic research on the radial artery, the Hall device was developed to sense magnetic field changes generated by periodic movement.…”

Section: Introductionmentioning

confidence: 99%

Measurement of Spatial Pulse Wave Velocity by Using a Clip-Type Pulsimeter Equipped with a Hall Sensor and Photoplethysmography

Nam

Lee

Hong

et al. 2013

Sensors

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A prototype of a clip-type pulsimeter equipped with a magnetic field-sensing semiconductor Hall sensor was developed. It has a permanent magnet attached in the “Chwan” position to the center of a radial artery. The clip-type pulsimeter is composed of a hardware system measuring voltage signals. To measure spatial pulse wave velocity (SPWV), the signal from the radial artery pulsimeter and that from the photoplethysmography (PPG) were simultaneously compared. The pulse wave data from a clinical test of 39 clinical participants (male:female = 25:14) with a mean age of 24.36 (±2.35) years was analyzed. The mean SPWV, which was simultaneously measured from the radial artery pulsimeter and PPG, was 0.8 m/s. We suggest the SPWV results were higher for men than women, because of the better vascularity of terminal tissue in men. The findings of this research may be useful for developing a biomedical signal storage device for a U-health-care system.

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“…Therefore, the maximum displacement of a magnet attached to the skin should be within about 1.13 mm. An Nd magnet with a thickness of 1 mm and a diameter of 3 mm was selected in this research, as it is affordable, easily attached to the skin's surface, and easily attached to the part to be measured [19,20].…”

Section: Operating Principle Of Clip-type Pulsimetermentioning

confidence: 99%

Fuzzy Simulation of a Multi-electronic Acupuncture System and Clip-type Pulsimeter Equipped with a Magnetic Sensing Hall Device

Hong

Rhee

Kim³

et al. 2014

Journal of Magnetics

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A portable clip-type pulsimeter equipped with a magnetic sensing Hall device has been developed to raise the accuracy of oriental disease diagnosis and therapy by convergence of magnetism and oriental medicine. To improve accuracy and reliability of conventional pulsimeter due to subjective analysis of the pulse wave and measuring position dependency of the arterial pulse sensor, the fuzzy algorithm was applied to analyze the strong-and weak-pulse wave symptom. Optimal time for electronic acupuncture was calculated using fuzzy rules and interference were drawn from objective data in view of pre-treatment. Moreover, the electrical characteristics of the pain parts that respond to acupuncture point were applied in view of post-treatment to propose the scientific pulse wave algorithm and simulation experiment.

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Estimated Blood Pressure Algorithm for a Wrist-wearable Pulsimeter Using Hall Device

Cited by 24 publications

References 1 publication

Peripheral Blood Flow Velocity and Peripheral Pulse Wave Velocity Measured Using a Clip-type Pulsimeter Equipped with a Permanent Magnet and a Hall Device

Peripheral Blood Flow Velocity and Peripheral Pulse Wave Velocity Measured Using a Clip-type Pulsimeter Equipped with a Permanent Magnet and a Hall Device

Measurement of Spatial Pulse Wave Velocity by Using a Clip-Type Pulsimeter Equipped with a Hall Sensor and Photoplethysmography

Fuzzy Simulation of a Multi-electronic Acupuncture System and Clip-type Pulsimeter Equipped with a Magnetic Sensing Hall Device

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