在传统的医疗器械中,超声多普勒胎音仪的超声探头和主机是通过电缆线来进行连接,存在老化、易损、变形、使用不便等问题。本文介绍了在传统的超声多普勒胎音仪上,引入基于n RF24L01+的无线音频传输技术,替代电缆线进行通信连接,很好的解决了电缆线连接的问题。 In the traditional medical devices, the ultrasound probe and the host of the ultrasonic Doppler fetal instrument are connected by a cable, which has the problems of aging, fragility, deformation, inconvenience of use and the like. This article describes the traditional ultrasound Doppler fetal instrument, the introduction of n RF24L01 + -based wireless audio transmission technology, instead of cable communication connection, a good solution to the problem of cable connections.