肝储备功能检测仪无线探头系统

Wireless probe system of liver reserve function detector

基于无线数据传输方式,现提出一款为肝储备功能检测仪提供人体脉搏波信号的采集探头系统。系统硬件设计采用血氧模拟前端芯片AFE4404结合控制模块,实现脉搏波信号采集。软件设计上结合基于阈值法的信号处理算法,系统能够自适应的调整脉搏波信号的差异性。实际使用中通过以射频收发芯片nRF24L01为核心的无线数据通信模块,实现了无线探头和肝储备功能检测仪的分离。经过不同实验验证分析,得出系统能够实时准确的采集脉搏波信号,并可以较远距离与肝储备功能检测仪建立稳定的无线通信。

Based on wireless data transmission method,this paper designs a collection probe system of the human pulse wave signal for the liver reserve function detector.The system hardware design adopts the blood oxygen analog front-end chip AFE4404 to to combine the control module,realizes the pulse wave signal collection.In the software design,the system adopts the signal processing algorithm based on threshold method,which can adaptively adjust the difference of pulse wave signal.In actual use,Through wireless data communication module which is based nRF24L01 RF transceiver chip,realized the separation of wireless probe and liver reserve function detector,Through the analysis of different experiments,it is concluded that the system can collect the pulse wave signal in real time and establish stable wireless communication with the liver reserve function detector far away.