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System measures all electrical signals in the body absolutely ‘uninterrupted’

Credit: DGIST (Daegu Gyeongbuk Institute of Science and Expertise)

The staff led by Professor Lee Jung-hyup of the Division of Electrical Engineering and Pc Science has developed an built-in circuit system changing analog indicators into digital indicators that may acquire all types of bio-electrical indicators. This newly developed know-how can exactly measure {the electrical} indicators generated by the human physique even in an surroundings with robust exterior noise. It could possibly be utilized in applied sciences equivalent to brain-machine interfaces and ultra-small, high-performance medical gadgets.

Electrical indicators generated within the dwelling physique embody electrocardiogram (ECG), mind electroencephalogram (EEG), and electro-neurogram (ENG) generated from the guts, and every sign has completely different sign traits. For instance, within the case of an electroencephalogram, the sign dimension may be very small, on the stage of 1 microvolt. Within the case of electroneurogram, the frequency range occupied by the sign may be very large in comparison with different indicators. It requires over 10 instances bandwidth. Attributable to this distinction, the biosignal measurement know-how developed to date was in a position to purchase solely a selected sign in a secure surroundings with virtually no noise. It was troublesome to increase or apply it to different technological fields.

Beneath these circumstances, Professor Lee Jung-hyup’s staff efficiently developed an analog-to-digital sign conversion system able to measuring all bioelectrical indicators even in a really poor surroundings the place electrical stimulation interference that’s as much as tens of 1000’s of instances bigger than the measured sign and movement artifacts which may be brought on by the motion of the topic. Because the system is developed with semiconductor built-in circuits, it’s ultra-low energy, compact and versatile, which makes it very straightforward to use.

Professor Lee Jung-hyup’s staff proposed a low-noise, high-linearity circuit know-how primarily based on continuous-time delta-sigma conversion know-how. As well as, the staff developed a circuit method for rising enter impedance that’s strong towards parasitic parts.

Professor Lee Jung-hyup of the Division of Electrical Engineering and Pc Science at DGIST mentioned, “It is a technology that can be a great help to miniaturization and high performance of existing related medical devices by enabling precise measurement of various biosignals with a single semiconductor IC (integrated circuit) system. It can be applied to various applications such as the next-generation brain-machine interface, micro-wearable diagnostic device, and electronic medicine, which are drawing enormous attention as future technologies.”

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Daegu Gyeongbuk Institute of Science and Expertise

System measures all electrical indicators within the physique completely ‘uninterrupted’ (2022, July 1)
retrieved 1 July 2022

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