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压力测量系统的固有谐振频率用压力换能器进行生理测量时,通常需要一根细长导管,一端与换能器相接,另一端伸入体腔被测部位。若要精确反映被测部位的动态功能压力波形应无失真,这要求换能器测量系统有足够宽的频率响应。由于心血管系统压力波形所含频率比其他部位高,故今以心血管测压为例,提出对换能器的频响要求。若心血管循环频率每秒二次,由于心脏与血管的结构复杂,加以心泵功能也十分繁
The inherent resonant frequency of the pressure measurement system Physiological measurement with a pressure transducer usually requires an elongated catheter with one end connected to the transducer and the other end extending into the body cavity to be measured. To accurately reflect the measured part of the dynamic function of the pressure waveform should be no distortion, which requires the transducer measurement system has a sufficiently wide frequency response. Because of the cardiovascular system pressure waveform contains higher frequency than other parts, so now as an example of cardiovascular manometry, the proposed frequency response requirements of the transducer. If the frequency of cardiovascular circulation twice per second, due to the complex structure of the heart and blood vessels, to heart pump function is also very complicated