多普勒胎心仪原理及参数简介

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                    <section><section powered-by="gulangu"><section><section><p><img src="image/20201019/f8901522e84aa92184da4de60b65ec14_1.gif" /></p></section></section></section><section powered-by="gulangu"><section><section> <section> <section powered-by="gulangu"><section><section><p>多普勒胎心仪原理</p></section></section></section> </section> </section></section></section><section powered-by="gulangu"><section><section><p>&nbsp; &nbsp; &nbsp; 超声多普勒胎心仪采用超声非聚焦连续波多普勒原理，由与母体腹部声藕合的超声换能器及电路部分组成，可监测和记录胎儿心率、母体宫缩的功能，主要用于产妇孕后期、产前及产时对胎儿的监护。</p><p>&nbsp; &nbsp; &nbsp; &nbsp;在检定时，超声换能器产生的超声束直接对准胎儿，入射声束的一部分到胎心运动表面，由于多普勒效应，超声波频率发生频移，由接收换能器检测，经信号处理可将与胎心有关的低频信号中分离出来，加以放大，用于胎心检测。</p></section></section></section><section powered-by="gulangu"><section><section> <section> <section powered-by="gulangu"><section><section><p>多普勒胎心仪参数（仅供参考）</p></section></section></section> </section> </section></section></section><section powered-by="gulangu"><section><section><p>1、探头超声频率</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;2.2或3.3MHZ±3%连续波</p><p>2、探头超声功率</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;≤5mW/cm2</p><p>3、胎心率测量范围</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;50-210bpm</p><p>4、胎心率测量精度</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;±1bpm</p><p>5、最大综合灵敏度</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;≥95db</p><p>6、使用电源</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;内置充电电池组，电池组至少有12个5号可充电电池</p><p>7、最短充电时间</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;8小时</p><p>8、电池连续工作时间</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;≥12小时</p><p>9、扬声器</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 内置双喇叭放音</p></section></section></section><section powered-by="gulangu"><section><section><p><br  /></p></section></section></section><section powered-by="gulangu"><section><section> <section powered-by="gulangu"><section><section><p>欢</p></section></section></section> </section><section> <section powered-by="gulangu"><section><section><p>迎</p></section></section></section> </section><section> <section powered-by="gulangu"><section><section><p>关</p></section></section></section> </section><section> <section powered-by="gulangu"><section><section><p>注</p></section></section></section> </section></section></section><section powered-by="gulangu"><section><section><p><br  /></p></section></section></section><section powered-by="gulangu"><section><section> <section powered-by="gulangu"><section><section><p><img src="image/20201019/9483a7d5bfcc9cbcb14a3083ac30b699_2.jpg" /></p></section></section></section> </section><section> <section powered-by="gulangu"><section><section> </section></section></section> </section><section> <section powered-by="gulangu"><section><section><p>关注我们</p><p>一起涨姿势！</p></section></section></section> </section></section></section></section>