Karagözoğlu B
Department of Electrical and Computer Engineering, King Abdulaziz University, Jeddah, Saudi Arabia.
Australas Phys Eng Sci Med. 1998 Jun;21(2):85-94.
A radiotelemetry system is introduced for analyzing several physiological parameters from free ranging patients within a transmission range of 100 metres. The parameters considered are two independent electromyograms, an electrocardiogram, and a body position indicator. A battery status signal is also transmitted. An equalizer network is utilized to improve the overall frequency response of the system. The composite signal from the equalizer can be recorded by using a tape recorder and demulitiplexed simultaneously. A filter bank is used for demultiplexing. Each filter unit in the bank provides outputs that emphasize and at the same time suppress signals in the same frequency range. The suppressed output supplies the signal to proceeding stages. Hence, an efficient filtering of closely packed multiplexed signals is achieved. The incoming original signals are recovered at outputs of demodulators following the filter bank. The proposed system provides an efficient and cost-effective way of physiological signal detection and storage from free-ranging patients. It is designed using commonly available electronic components. It can be implemented easily, and adapted to other physiological and physical parameters of interest.
介绍了一种无线电遥测系统，用于分析距离在100米传输范围内自由活动患者的多个生理参数。所考虑的参数有两个独立的肌电图、一个心电图和一个身体位置指示器。还会传输电池状态信号。利用一个均衡器网络来改善系统的整体频率响应。来自均衡器的复合信号可以用磁带录音机记录并同时进行多路分解。使用一个滤波器组进行多路分解。该滤波器组中的每个滤波器单元提供的输出会突出同时抑制相同频率范围内的信号。被抑制的输出将信号提供给后续阶段。因此，实现了对紧密排列的多路复用信号的高效滤波。在滤波器组之后的解调器输出端恢复输入的原始信号。所提出的系统提供了一种从自由活动患者身上检测和存储生理信号的高效且经济有效的方法。它采用常用的电子元件设计。它可以轻松实现，并适用于其他感兴趣的生理和物理参数。
