Design of Linear Sweep Source Based on DDS Used in Readout System for Wireless Passive Pressure Sensor

作     者：Yingping HONG 

作者机构：Science and Technology on Electronic Test & Measurement Laboratory North University of China Taiyuan 030051China Key Laboratory Instrumentation Science & Dynamic Measurement Ministry of Education North University of ChinaTaiyuan 030051 China 

基　　金：61335008 

出 版 物：《Photonic Sensors》 (光子传感器（英文版）)

年 卷 期：2014年第4卷第4期

页      码：359-365页

摘      要：This paper proposes the design and research on the high bandwidth linear frequency sweep signal source involved in the readout unit module of the wireless passive pressure sensor in high temperature based on the principle of mutual inductance coupling which is applied widely at present. The operating principle of the linear sweep frequency source based on the direct digital frequency synthesis （DDS） technology is introduced, and the implementation method of the hardware circuit and logic sequential control process required in our system has been realized utilizing this technology. Through the experiments under different conditions of the step value, the sweep range and other related design indicators, the influence on the extraction method of resonance frequency information, extraction accuracy, and others during the readout system of the mutual inductance coupling sensor are analyzed and studied. The design of the linear frequency sweep signal source is realized with a resonance frequency change resolution of 6 kHz, a minimum step value of 1 kHz, and a precision of frequency for 0.116 Hz within the sweep width of 1 MHz - 100MHz. Due to the use of the integrated commercial chip, the linear sweep frequency source is made small in size, high working frequency, high resolution and low step values for the readout unit modularized of a higher application value.

主 题 词：Direct digital frequency synthesizer LC resonant sensor resonant frequency pressure test 

学科分类：0808[工学-自动化类] 0809[工学-计算机类] 080902[080902] 08[工学] 080202[080202] 0805[工学-能源动力学] 0802[工学-机械学] 0702[理学-物理学类] 

核心收录：

D　O　I：10.1007/s13320-014-0212-1

馆 藏 号：203674353...