本論文承襲前兩代之雙頻、變頻超音波測距演算法研究，設計實作一超音波測距專用晶片，並以此晶片發展出超音波定位平台原型。 利用此一晶片IP核心，可載於Xilinx Spartan II等級以上之FPGA。其存取介面為通用8-bit MCU之Memory Mapping I/O方式，適用於各一般8-bit MCU做超音波量測專用。 由此晶片發展之定位平台原型，除可做一般點對點超音波距離量測外，本論文並提出未來發展多點定位之設計原型。 This paper follows the research of dual frequency and frequency alteration algorithm. The objective is to design and implement an ASIC used for ultrasonic distance measurement, and to use this ASIC to develop a local positioning system prototype. With this IP core, which can be applied in Xilinx Spartan II FPGA or more advanced FPGA. The access interface of this chip is memory mapping I/O of general 8-bit MCU. It’s suitable for any common 8-bit MCU to measure distance by ultrasound. This local positioning system can be used for peer to peer ultrasonic distance measurement. In this article, bring up a prototype that can locate mobile stations future.
