Body Mass Composition Measurements Using a Portable Device

Daou, B.; Elbadi, M.; Alkaisi, A.; Elwakil, Ahmed S.

doi:10.1109/niles56402.2022.9942392

Cited by 1 publication

(1 citation statement)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These systems are usually based on microcontrollers and/or Field Programmable Gate Arrays (FPGAs) and are powered by batteries [1] or scavenge energy from natural sources [2]. The sensing applications cover a wide range of fields, such as environmental monitoring [3][4][5], food screening for quality analysis and safety [6][7][8], biological measurements for human body composition determination and health monitoring [9][10][11], bacterial detection [12][13][14], chemical analysis [15][16][17], health monitoring, and data collection on civil infrastructures [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Efficient and Accurate Analog Voltage Measurement Using a Direct Sensor-to-Digital Port Interface for Microcontrollers and Field-Programmable Gate Arrays

Grossi

2024

Sensors

View full text Add to dashboard Cite

Portable sensor systems are usually based on microcontrollers and/or Field-Programmable Gate Arrays (FPGAs) that are interfaced with sensors by means of an Analog-to-Digital converter (ADC), either integrated in the computing device or external. An alternative solution is based on the direct connection of the sensors to the digital input port of the microcontroller or FPGA. This solution is particularly interesting in the case of devices not integrating an internal ADC or featuring a small number of ADC channels. In this paper, a technique is presented to directly interface sensors with analog voltage output to the digital input port of a microcontroller or FPGA. The proposed method requires only a few passive components and is based on the measurements of the duty cycle of a digital square-wave signal. This technique was investigated by means of circuit simulations using LTSpice and was implemented in a commercial low-cost FPGA device (Gowin GW1NR-9). The duty cycle of the square-wave signal features a good linear correlation with the analog voltage to be measured. Thus, a look-up table to map the analog voltage values to the measured duty cycle is not required with benefits in terms of memory occupation. The experimental results on the FPGA device have shown that the analog voltage can be measured with a maximum accuracy of 1.09 mV and a sampling rate of 9.75 Hz. The sampling rate can be increased to 31.35 Hz and 128.31 Hz with an accuracy of 1.61 mV and 2.68 mV, respectively.

show abstract

Section: Introductionmentioning

confidence: 99%

Efficient and Accurate Analog Voltage Measurement Using a Direct Sensor-to-Digital Port Interface for Microcontrollers and Field-Programmable Gate Arrays

Grossi

2024

Sensors

View full text Add to dashboard Cite

show abstract

Body Mass Composition Measurements Using a Portable Device

Cited by 1 publication

References 2 publications

Efficient and Accurate Analog Voltage Measurement Using a Direct Sensor-to-Digital Port Interface for Microcontrollers and Field-Programmable Gate Arrays

Efficient and Accurate Analog Voltage Measurement Using a Direct Sensor-to-Digital Port Interface for Microcontrollers and Field-Programmable Gate Arrays

Contact Info

Product

Resources

About