• Title, Summary, Keyword: biotelemetry

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Tracking Technology of Fish by an Ultrasonic Biotelemetry System (초음파 바이오텔레메터리를 이용한 어류의 추적기술)

  • Park, Ju-Sam
    • Journal of Fisheries and Marine Sciences Education
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    • v.19 no.3
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    • pp.478-490
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    • 2007
  • A technology of ultrasonic biotelemetry for tracking fish behavior is investigated. The ultrasonic biotelemetry system is constituted by a transmitter and a receiving system. Because a pinger was mainly used for the transmitter, the capability for pinger to possess was investigated and the efficient usage for pinger was examined. A source pressure level and a frequency were synthetically examined so that pinger could realize small size, a light weight, and a long life time. The receiving system is divided roughly into directional hydrophone systems and acoustic positioning systems by the receiving method. The directional hydrophone system is divided into single beam and multiple beam with the number of hydrophone, and the acoustic positioning systems is divided into LBL (Long Base Line), SBL (Short Base Line), and SSBL (Super Short Base Line) on the basis of base line. The present situation, the merits and demerits, and the principle of each receiving method were investigated in detail, and the efficient usage for each receiving method were examined.

Development of A Biotelemetry System for A Totally Implantable Artificial Heart (완전이식 인공심장용 무선정보 전송장치의 개발)

  • Choi, Won-Woo;Kang, Dong-Woo;Park, Seong-Keun;Choi Jae-Soon;Kim, Hee-Chan;Min, Byoung-Goo
    • Journal of the Korean Institute of Telematics and Electronics B
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    • v.33B no.1
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    • pp.57-66
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    • 1996
  • In this paper, a new biotelemetry system for a transcutaneous data communication between an implanted artificial heart with a control system and an external human-interfaced management system has been developed. A radio telemetry using radio frequency is a commonly used method in the conventional telemetry systems. But, it is not suitable for the medical applications because of not only an interference due to a radio broadcasting but also a harmfulness to the human body. In this paper, therefore, a new biotelemetry system applied to an artificial heart has been developed with the results of the recent research for an optical telemetry system based on the infrared light transmission with good skin permeability. The performance of the biotelemetry system developed has been assessed through mock circulatory experiments, and the clinical applicability has been also confirmed with the successful results in the animal experiments.

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A Study on the Characteristics of near IR lights for non-restrained Biotelemetry (생체 신호의 무구속 측정을 위한 근 적외선 특성 연구)

  • 허수진;정찬수
    • Journal of Biomedical Engineering Research
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    • v.13 no.2
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    • pp.141-146
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    • 1992
  • The propagation, reflection and scattering characteristics of the near Infra-red lights were experimented in order to check the feasibility of non-restrained biotelemetry using indirect transmitted light. The results of the experiments show that 3 kinds of walls examined are not specular reflectors but almost perfect diffuse surfaces with slight directivity and that light in a local point is spread out and fills the room uniformly by repeating the reflection and scattering at walls, ceiling, floor. These results also explain the fact that the diffusely reflected light can be utilized as the carrier of biotelemetry even after several scattering and reflections.

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Design of Implantable Rectangular Spiral Antenna for Wireless Biotelemetry in MICS Band

  • Lee, Jae-Ho;Seo, Dong-Wook;Lee, Hyung Soo
    • ETRI Journal
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    • v.37 no.2
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    • pp.204-211
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    • 2015
  • For this study, we designed an implantable rectangular spiral antenna for medical biotelemetry in the Medical Implant Communications Service band (402 MHz to 405 MHz). The designed antenna has a U-shaped loop for impedance matching. The antenna impedance is easily adjusted by controlling the shape and length of the U-shaped loop. Significant design parameters were studied to understand their effects on the antenna performance. To verify the potential of the antenna for the desired applications, we fabricated a prototype and measured its performance in terms of the resonant characteristics and gain radiation patterns of the antenna. In the testing phase, the prototype antenna was embedded in human skin tissue-emulating gel, which was developed to simulate a real operation environment. The measured resonant characteristics show good agreement with the simulations, and the -10 dB frequency band is within the range of 398 MHz to 420 MHz. The antenna exhibits a maximum gain of -22.26 dBi and an antenna efficiency of 0.215%.

Measuring stress responses using active biotelemetry in cattle I. Restraint stress responses in heifers and cows (Active biotelemetry를 이용한 젖소의 스트레스 반응 측정 I.보정 스트레스에 대한 경산우와 미경산우의 생체반응의 변화)

  • Lim, Joa-jin;Lee, Byeong-han;Kim, Jin-young;Lee, Su-han;Lee, Dong-hee;Kim, Jae-kyung;Jeong, Soon-wuk;Choe, Nong-hoon;Chung, Byung-hyun
    • Korean Journal of Veterinary Research
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    • v.41 no.4
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    • pp.597-602
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    • 2001
  • This study was carried out to investigate the effectiveness of active biotelemetry to monitor stress response, and the effects of acute stressor (raising a hind foot of a standing animal) on body temperature (BT) and heart rate (HR) in comparison heifer group (n=4) with cow group (n=3). Both parameters were recorded by active telemetry. Cortisol assay was used to compare the result of active biotelemetry. The stressor consisted in restraining the cows for hoof treatments. Body temperature and heart rate were measured at 0, 10, 20, 30, 40, 50, 60, 90, 120, 180 and 360 minutes during the experiments, and also cortisol assay at 0, 0.5, 1, 2, 3, 12 and 24 hours. Base line for these animals was set in there accustomed environment at -24hrs and -30 mins before the beginning of experiments. The results obtained in this study were as follows: 1. In the BT, heifer group showed no significant difference from cow group, but were observed slightly higher BT than cow group during restraint stress for 30 minutes. 2. The both groups showed directly significant increase of HR immediately after the beginning of the restraint stress (P<0.01), but in the required time for the recovery of HR after finishing the stress, heifer group was 40 minutes and cow group 60 minutes. 3. In the cortisol assay, the both groups increased from 30 to 120 minutes after the beginning of experiment (i.e, from 0 to 90 minutes after finishing the restraint stress), showing significant difference from before the beginning of the stress (P<0.01), but heifer group showed great increase of the cortisol level from 30 to 60 minutes after the beginning of the stress, while cow group was observed at 60 minutes. In conclusion, we suppose that care is required to decrease psychological stress in cattle when they suffer from a series of procedures for diagnosis and treatment, especially in heifers rather than in cows. Also BT and HR obtained by active biotelemetry are reliable indicators of stress in cattle.

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Development of Biotelemetry Method by Combining the SSBL Method and the Pinger Synchronizing Method (1) - Design and production of system - (SSBL 방식과 핑거동기 방식을 조합한 바이오텔레메터리 방식의 개발 (1) -시스템의 설계 및 제작 -)

  • 박주삼;고탁창언
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.39 no.3
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    • pp.218-229
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    • 2003
  • A new biotelemetry method that the installation and the treatment of equipment is convenient and the instantaneously detailed location of the fish attached the pinger is able to track comparatively easily was developed. The receiving system in this biotelemetry method was advanced for track the detailed behavior of the fish by the miniature tracking pinger, because it was a burden to fish to add the pinger with the water temperature and the pressure sensor. By combining of the super short base line (SSBL) method to detect the direction of pinger and the pinger synchronizing method to measure the range from receiving transducer to pinger, the three dimensional locations of fish to the receiving transducer is gotten instantaneously. The receiving system is devised to realize the high precision or wide detection range by application of the basic design method for receiving system of biotelemetry developed by the present authors and the hydrophone array configuration. The measurement distance error in the pinger synchronizing method is minimized through the correction of which the deviation of transmission pluse period of pinger is caused by changing water temperature. A prototype system which is able to track the instantaneously detailed location of the fish by the SSBL and pinger synchronizing biotelemetry (SPB) method was produced.

Verification of Practicality for the SSBL and Pinger Synchronizing Biotelemetry Method and System through the Tracking of Fish (어류의 행동추적에 의한 SSBL · 핑거동기 바이오텔레메터리 방식과 시스템의 실용성 검증)

  • Park, Ju-Sam
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.40 no.1
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    • pp.78-85
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    • 2004
  • The new biotelemetry method and system that the installation and the treatment of equipment is convenient and the instantaneously detailed position of the fish attached a pinger is able to track comparatively easily had been developed, an practicality of it were verified in the water tank and the small sea port through the tracking of fish. The biotelemetry method had been gotten the three dimensional locations of fish to the receiving transducer by combining of the super short base line (SSBL) method to detect the direction of pinger and the pinger synchronizing method to measure the range from receiving transducer to pinger. The receiving system had been designed to realize the high precision or wide detection range by application of the basic design method for receiving system of biotelemetry and the hydrophone array configuration. From tracking test of carp in the water tank, the migration course and the velocity of carp was investigated and the observed migration course was compared with measurement. The measured migration course of carp coincided with the observation in the main and the position of carp was able to track three dimensionally. The velocity of carp measured by the moving average method was 11.2cm/s. From tracking test of yellowtail in the small sea port, the migration course and the velocity of yellowtail was investigated at natural condition. The position of yellowtail was able to track three dimensionally and the velocity of it measured by moving average method was 43.9cm/s.

A Design of Multi-Channel Biotelemetry for ECG Encoding and Transmission Over the Public Telephone Line (공중 전화회선용 다중 채널 ECG데이터 원격 측정시스템 설계)

  • Gye, Sin-Ung;Jang, Won-Seok;Hong, Seung-Hong
    • Journal of Biomedical Engineering Research
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    • v.7 no.1
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    • pp.21-34
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    • 1986
  • In this paper, we described the ECG telemetry system via the Public Telephone Line. The system consist of a signal acquisition and measurement section, a signal processing section, and a signal transmission section. It used 8 bits microprocessor. The transmission section is composed of 3 ch. analog modulators and 1 ct. digital modem. Especially, using the digital modem, signal is transmitted with about 50n data reduction ratio by the TP (Turning Point) algorithm. The acoustic coupler or inductive coil for linking the public telephone line are used. The speed of the digital modem is 300 baud rate. The MCBS (Multi Channel Biotelemetry System) is tested and evaluated through the experiment.

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A Study on the Biotelemetry using Infra-red Light (적외선을 이용한 생체신호의 원격측정에 관한 연구)

  • Huh, Soo-Jin
    • Journal of Biomedical Engineering Research
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    • v.14 no.2
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    • pp.169-175
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    • 1993
  • Recently, interest in infra-red(IR) telemetry has increased because of the entirely different propagation and reflection properties of IR light as compared to radiowaves. IR hardly penetrates most materials and is reflected from obstacles. An biotelemetry system using these characteristics of indirect transmitted IR lights was developed, in which 3 ECG's are multiplexed and modulated in PDM/PIM pulse sequence. This proto-type system enables us to realize the non-restraint measurement of biological signals. Compared with conventional radio telemetry, this technique has some merits such as no electromagnetic interference, no frequency allocation problem, no government control over transmission power.

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A Scalp-Implantable Antenna for Wireless Biotelemetry (무선 Biotelemetry용 인체 이식형 안테나)

  • Yoo, Hyoungsuk
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.65 no.1
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    • pp.112-115
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    • 2016
  • This paper demonstrates a scalp-implantable miniaturized antenna at the medical implant communication service (MICS) (402-405MHz) band. The antenna size is only $27.63mm^3$($8.5mm{\times}6.5mm{\times}0.5mm$), which is the smallest antenna for the MICS band. Miniaturization is achieved by using a symmetrical serpentine shaped radiating patch and placing open-end slots in the ground plane. In addition, co-axial feeding is used for excitation with a shorting pin connected between the radiator and ground. The antenna was simulated in a homogeneous skin model and in the human scalp. An experimental prototype of the proposed antenna was fabricated and measured in a skin-mimicking gel. Good agreement was obtained between the measurement and simulation results, showing a broad bandwidth of 49 MHz (from 395 to 444 MHz) for |S11| less than -10 dB and a maximum gain of -42.87 dBi. This gain is higher than the previous MICS antenna with respect to antenna size.