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超声多普勒胎儿心率检测系统前置电路设计

更新时间:2020-08-02 01:03:27 大小:1M 上传用户:zhiyao6查看TA发布的资源 标签:超声多普勒心率检测系 下载积分:5分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

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在超声多普勒胎儿心率检测系统中,模拟前置电路是影响胎儿心率检测系统灵敏度的核心环节.根据胎儿心动信号的特点,基于超声多普勒信号检测的理论模型,重点研究了超声探头与前后级电路的匹配方法,对超声信号发射端和接收端分别采用了不同的匹配方式,且均获得了良好的匹配效果,进而设计出一种新型的电路结构简单、易于调试且成本低廉的前置驱动电路.最后对该电路进行测试对比与分析,测试结果表明电路的实用性强,灵明度高.

Ultrasonic front-end circuit is a critical link to affect the system sensibility of heart rate detection of fetus. In this paper,according to the feature of the heart signal of fetus ,and based on the theoretical of the Dopple~signal- detect,we focus on researching the matched method between the transmitting terminal and the receiving terminal respectively,thus receive well matched effect, then will contribute to design a new type drive-circuit, whose circuit structure is simple,easy to debug,and low cost. It were carried on a series of test and analysis,the outcomes of which demonstrate the higher t~racticabilitv of the circuit,so as the sensitivity of circuit.

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超声多普勒胎儿心率检测系统前置电路设计.pdf 1M

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