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Thakor和Webster在文中提出,双电极差分输入的ECG系统比双电极单端输入放大器ECG系统性能优越。又由于他们研制的系统少用一个电极,适用于长期Holter监控及生物电遥测。然而,仔细分析他们的系统后可以看出,在生物电遥测应用中此系统电路和双电极单端输入ECG系统相差无几。(?)r和Webster提出断开ECG接地电极,这个电极通常和病人相接作为差分放大器的参考点。其结果是使差分放大器到病人之间的参考点电流流经两个串联的高容抗X_(c1)和X_(c2)。正如他们自己得出的结论,运动使病人对地
Thakor and Webster put forward in this paper that a two-electrode differential input ECG system performs better than a two-electrode single-ended input amplifier ECG system. And because they developed a system using less than one electrode, suitable for long-term Holter monitoring and bioelectric telemetry. However, a careful analysis of their system shows that this system circuit is almost the same as a two-electrode single-ended ECG system for bioelectric telemetry applications. (?) r and Webster proposed disconnecting the ECG ground electrode, which is usually connected to the patient as a reference point for the differential amplifier. The result is that the reference current between the differential amplifier and the patient flows through two series of high capacitive reactance X_ (c1) and X_ (c2). As they came to the conclusion, exercise made the patient to the ground