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http://dx.doi.org/10.9718/JBER.2021.42.6.259

The Effect of Communication Distance and Number of Peripheral on Data Error Rate When Transmitting Medical Data Based on Bluetooth Low Energy  

Park, Young-Sang (Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation)
Son, ByeongJin (Daegu Catholic University)
Son, Jaebum (Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation)
Lee, Hoyul (Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation)
Jeong, Yoosoo (Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation)
Song, Chanho (Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation)
Jung, Euisung (Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation)
Publication Information
Journal of Biomedical Engineering Research / v.42, no.6, 2021 , pp. 259-267 More about this Journal
Abstract
Recently, the market for personal health care and medical devices based on Bluetooth Low Energy(BLE) has grown rapidly. BLE is being used in various medical data communication devices based on low power consumption and universal compatibility. However, since data errors occurring in the transmission of medical data can lead to medical accidents, it is necessary to analyze the causes of errors and study methods to reduce data error. In this paper, the minimum communication speed to be used in medical devices was set to at least 800 byte/sec based on the wireless electrocardiography regulations of the Ministry of Food and Drug Safety. And the data loss rate was tested when data was transmitted at a speed higher than 800 byte/sec. The factors that cause communication data error were classified, and the relationship between each factor and the data error rate was analyzed through experiments. When there were two or more activated peripherals connected to the central, data error occurred due to channel hopping and bottleneck, and the data error rate increased in proportion to the communication distance and the number of activated peripherals. Through this experiment, when the BLE is used in a medical device that intermittently transmits biosignal data, the risk of a medical accident is predicted to be low if the number of peripherals is 3 or less. But, it was determined that BLE would not be suitable for the development of a biosignal measuring device that must be continuously transmitted in real time, such as an electrocardiogram.
Keywords
u-Healthcare service; Monitoring system; Bluetooth low energy; Data error rate; Medical device;
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