基于拉梅模谐振器的无线式石英测温系统设计
Design of wireless quartz temperature measuring system based on Lamé-mode resonator
初思搏1
作者信息
- 1. 上海大学通信与信息工程学院,上海 200444
- 折叠
摘要
本文提出一种采用单端支撑型拉梅(Lamé)模石英热敏谐振器的无线式石英测温系统的设计.它包括一体式热敏—载波双模谐振组件、同步激励式双模相干振荡组件、调频与整形滤波组件、无线发射、接收与鉴频组件、STM32F407 型单片机软硬件信号处理单元等.详述了频率为1.8 MHz的Lamé模石英热敏谐振器、频率为98 MHz泛音厚度切变模的超小型载波石英谐振器的设计与创新点.实验结果表明:典型样品Lamé模热敏谐振器的Q值可达6.5×104,测温系统分辨率为0.01℃,精度为0.2℃,达到设计要求.
Abstract
Design of a wireless quartz temperature measuring system using a single end supporting Lamé-mode quartz temperature sensitive resonator is proposed.It includes integrated temperature-sensitive carried dual-mode resonant components,synchronous excitation dual-mode coherent oscillation components,frequency modulation and shaping filtering module,wireless transmitting,receiving and frequecy-discriminating module,and a hardware and software signal processing units for STM32F407 type MCU,etc.The design and innovation of quartz temperature sensitive resonator using Lamé-mode with the frequency of 1.8 MHz and an ultra-miniature carrier quartz resonator with the overtone frequency of a thickness-shear mode of 98 MHz are discussed.Experimental result shows that the Q value of the Lamé-mode temperature sensitive resonator of typical samples can reach up to 6.5×104.The resolution of temperature measuring system is 0.01℃,and the precision is 0.2℃,which meet the design requirements.
关键词
石英热敏谐振器/拉梅模/单端支撑型/同步激励双模相干振荡/STM32F407型单片机Key words
quartz temperature sensitive resonator/Lamé-mode/single-end support type/synchronously excited dual-mode coherent oscillation/STM32F407 type MCU引用本文复制引用
出版年
2024
NETL
NSTL
万方数据