无创心脏功能检查是近十余年来蓬勃发展的方法,具有安全和可重复等优点。但测定心缩间期和心输出量等需用多导仪同步记录心电图、心音图、颈动脉搏动图、心阻抗微分图和心导纳微分图等。由于高质量的多导仪价格昂贵(10—21万),国产仪器由于走纸不稳定,影响计算结果的准确性,靠手工测算比较费时,为使无创心功检测工作提高到一个新水平, Noninvasive cardiac function test is a booming method in recent ten years, which has the advantages of safety and repeatability. However, the determination of systolic interval and cardiac output, etc. need to use multi-channel instrument simultaneous recording of ECG, phonocardiogram, carotid artery pulsation, heart impedance differential and cardiac admittance differential maps. Due to the high quality of the multi-channel instrument is expensive (10-21 million), the domestic instrument due to the paper is unstable, affecting the accuracy of the calculation results, by manual calculation time-consuming, in order to make non-invasive cardiac work to a new level,