Abstract: Part of the artificial anus control system is transplanted into the body, and could monitor the quantity of defecation in real time with wireless power supply. With the control of the miniature, bi-directional RF communication system, the patient could be informed of and control defecating when the quantity of defecation is over setting. This paper introduces the application of the miniature, bi-directional RF communication system on artificial anus. The selection of component, hardware interface, mode of transmission and receiving, and software designed are analyzed.

Key words: IA4420, SPI, Artificial anus, bi-directional RF

摘要： 人造肛门控制系统部分模块植人体内，采用无线供能，可以实时检测人体直肠内粪便量，通过体内模块与体外部分的双向射频通信控制，粪便量超过阈值时提醒患者，患者可通过体外的按钮控制排便。本文介绍了微型双向射频通信在人造肛门控制系统中的应用，重点介绍了该射频通信的元件选取、通信接口、收发方式和软件设计。

关键词: IA4420, 增强型串行外设接口, 人造肛门, 双向射频