ardware Electric Circuit Design and Implementation of Wireless Sensing System

• Main Authors: Ju-Chiao Chang, 張茹喬
• Other Authors: Tzong-Dar Wu
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/76077471358503502414

碩士 === 國立臺灣海洋大學 === 電機工程學系 === 99 === The objective of this thesis is to design and implement the hardware electric circuits required for the wireless sensing system, which include the wireless transmission module, the RF power amplifier module, and the microwave motion sensor module. To fit the demand of the sophisticated modern wireless facilities, we choose the high integration and high performance ISM band RFIC, and integrate the proper MCU into the wireless transmission module so that the parameters of RFIC can be changed in real-time conveniently. The design of the PCB board incorporates multi-functionality and miniaturization while concurrently maintaining the performance of wireless transmission. In the design of the RF power amplifier module, we choose two kinds of power amplifiers for middle-range and long-range wireless transmission respectively. An additional switching circuit was combined into the middle-range RF power amplifier module for convenience of use with wireless transmission module. The microwave motion sensor module is composed of the 10.525GHz microwave motion sensor and the sensor controller board. The sensor controller board supplies the power in pulse train type for the microwave motion sensor. It also reconstructs, amplifies, and digitizes the doppler signals output from the microwave motion sensor.