| 摘要 |
An electrocardiogram signal converter comprises an electrocardiogram signal detector, a first voltage amplifier, at least one low pass filter, at least one high pass filter, a second voltage amplifier, an optical isolator and an RS232 input/output port. The electrocardiogram signal detector captures an electrocardiogram signal, and the signal is amplified and filtered through the first and the second voltage amplifiers and the high and low pass filter/filters before being transmitted to the optical isolator. Afterward, the output signal of the optical isolator is digitized by the analog-to-digital conversion device and is transmitted to a computer through the RS232 interface for heart rate variability analysis.
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