PROBLEM TO BE SOLVED: To provide a biological communication device 4 and a biological communication system 2 that use a pair (two sheets) of electrodes 10 for both biological signal detection and transmission by human body communication, detects a biological signal such as an electrocardiogram, and transmits the detected biological signal via a human body in real time.SOLUTION: A biological communication system 2 includes a pair of electrodes 10 pasted to a human body a biological communication device 4 and a human body communication reception unit 40. The biological communication device 4 includes: a biological signal detection unit 20 for detecting a biological signal from the electrodes 10 and an AD conversion unit 50 and the human body communication reception unit 40 for converting the biological signal into a digital signal to perform human body communication. The biological communication device also includes a human body communication transmission unit 40 that operates in time division at a biological signal detection time and a human body communication time, and has one electrode 10 operating as a signal electrode at the biological signal detection time and as a signal electrode at the human body communication time, and has the other electrode 10 operating as a signal electrode at the biological signal detection time and as a ground electrode at the human body communication time.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2016,JPO&INPIT【課題】本発明は、一組(2枚)の電極10を、生体信号検出と人体通信による送信に共用させ、心電図などの生体信号を検出し、リアルタイムで人体を経由して伝送する生体通信装置4、生体通信システム2に関する。【解決手段】人体に貼付する一対の電極10と、生体通信装置4と、人体通信受信部40と、を有する生体通信システム2において、生体通信装置4は、電極10からの生体信号を検出する生体信号検出部20と、生体信号を信号化して人体通信を行うAD変換部50及び人体通信受信部40とを有し、生体信号検出時と人体通信時に時分割方式にて動作し、一方の電極10は、生体信号検出時に信号電極、人体通信時に信号電極として動作、他方の電極10は、生体信号検出時に信号電極、人体通信時にグラウンド電極として動作を行う人体通信送信部40を有することを特徴とする生体通信システム2である。【選択図】 図3
