Battery-less type program controllable rfid transponder with logic circuit

バッテリーレス型プログラム制御可能な論理回路付きrfid応答器

Abstract

【課題】 誘導起電力を効率的に発生させると共に他回路への電力供給を安定して行うことによりCPUを内蔵してワンチップ化し又は外部接続可能としてインテリジェンス化させることができる、バッテリーレス型プログラム制御可能な論理回路付きRFID応答器を得る。 【解決手段】 相互インダクタンスが大きく取れる高効率なアンテナを使用し又は電力生成用のアンテナを別に設けてRFIDチップに接続する。また、該アンテナ及びRFID部内の同調回路により発生した誘導起電力を整流回路により直流に整流した後、大容量コンデンサに充電する。また、該RFIDチップのRFID部に通信インターフェース部を設け、CPUを内蔵してワンチップ化し又はCPUチップを外部接続可能する。更に、該CPU又はCPUチップに外部インターフェース部を設け、センサーを接続可能とする。 【選択図】 図1
<P>PROBLEM TO BE SOLVED: To provide a battery-less type program controllable RFID transponder with a logic circuit which is incorporated with a CPU so as to be integrated into one chip or made connectable to the outside so as to be made intelligent, by efficiently generating an induced electromotive force and stably supplying power to another circuit. <P>SOLUTION: A highly efficient antenna whose mutual inductance can be largely obtained is used or an antenna for generating power is separately arranged and connected to an RFID chip. Also, induced electromotive power generated by the antenna and a tuning circuit in the RFID part is rectified into direct currents by a rectifying circuit, and then charged in a mass capacitor. Also, the RFID part of the FRID chip is equipped with a communication interface part, and incorporated with a CPU, so as to be integrated into one chip, or the CPU chip is made connectable to the outside. Furthermore, the CPU or the CPU chip is equipped with an external interface part, and a sensor is made connectable. <P>COPYRIGHT: (C)2006,JPO&NCIPI

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