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本文介绍自制的用数字电路控制的模拟心电发生器,主要用于检测心电监护仪性能,与国外微处理机控制的心电发生器比较,它所产生的病态波形种类虽然较少,但能满足国内目前临床检测和出厂检测的需要,检测指标的精度可达同样水平,具有线路简单,成本低,效果稳定,便于临床使用;与国内模拟心电发生器比较,采用了数字电路控制,精度大幅度提高。本文介绍仪器的构成原理和性能,并附样机数控部分电路图,供安装同类仪器时参考。
This article describes the homemade digital circuit controlled analog ECG generator, mainly used to detect ECG performance, compared with foreign microprocessor-controlled ECG generator, it produces fewer types of sick wave, but Can meet the current domestic clinical testing and factory testing needs, the accuracy of test indicators up to the same level, with a simple circuit, low cost, stable effect, easy to clinical use; compared with the domestic analog ECG generator, the use of digital circuit control, Accuracy increased significantly. This article describes the composition of the principle and performance of the instrument, and sample circuit part of the NC, for the installation of similar instruments reference.