Maeda K
Baillieres Clin Obstet Gynaecol. 1990 Dec;4(4):797-813. doi: 10.1016/s0950-3552(05)80345-1.
Important biological signals from the fetus, including fetal heart rate and fetal movement, were obtained electronically by recent medical engineering techniques and processed (usually) via analogue-to-digital converter followed by analysis on a personal computer. The knowledge of obstetrical experts was analysed and used in computer processing. Fetal heart rate changes were initially studied by the use of a minicomputer, programmed to provide automatic quantification of the signal and diagnosis of fetal distress. The program was memorized by programmable read only memory (PROM) and used in a clinical system. The results obtained by the system were used in many obstetrical research studies, and automatic diagnosis was used in clinical practice. An ultrasonic Doppler fetal actocardiograph was also created. The amplitude and interval of the electrical deflections produced by fetal movement were analysed. Fetal behavioural states were automatically recognized in this way. Cross-correlational analysis of fetal heart rate and fetal movement showed a close relationship between the two phenomena.
通过最近的医学工程技术可以电子方式获取来自胎儿的重要生物信号，包括胎儿心率和胎动，并且（通常）通过模数转换器进行处理，随后在个人计算机上进行分析。分析了产科专家的知识并将其用于计算机处理。胎儿心率变化最初是通过使用小型计算机进行研究的，该小型计算机被编程为对信号进行自动量化并诊断胎儿窘迫。该程序由可编程只读存储器（PROM）存储，并用于临床系统。该系统获得的结果被用于许多产科研究中，并且自动诊断被用于临床实践。还创建了一种超声多普勒胎儿心动描记仪。分析了胎儿运动产生的电偏转的幅度和间隔。通过这种方式自动识别胎儿行为状态。胎儿心率和胎儿运动的互相关分析表明这两种现象之间存在密切关系。
