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胎儿心音换能器是分娩监护系统中的关键部件,目前使用的胎心音换能器的主要问题是抗干扰能力差。我们研制的TXH-1型换能器是加速度型的压电换能器,它利用共振原理提高抗干扰能力。本文介绍这一换能器的原理、结构和参数的选择。
Fetal heart sound transducer is a key component of childbirth monitoring system. The main problem of fetal heart sound transducer currently used is poor anti-interference ability. The TXH-1 transducer we developed is an acceleration-type piezoelectric transducer that utilizes the resonance principle to improve the immunity to interference. This article describes the principle, structure and parameters of this transducer.