摘要
介绍了基于谐振器型声表面波（SAW）传感器的温度检测系统的工作原理及组成结构,详细说明了系统中读写器设计过程中的关键技术,重点说明了读写器中射频前端电路的设计,包括锁相环（PLL）频率合成器模块、发射电路和接收电路的硬件设计,同时给出了数字信号处理（DSP）基带主控模块的设计框图和工作流程。对传感器在0~100℃的环境下测试数据进行了详细分析,测量温度的精度可达±1℃,在良好电磁环境下,最大测温距离可达5m。
The working principle and structure of the temperature detection system based on the resonator SAW sensor are presented in this paper.The key technology of the reader design in the system is described in detail.The design of RF front-end circuit in the reader is emphasized.,including the hardware designs of PLL frequency synthesizer module,the transmitting circuit and the receiving circuit.At the same time,the design block diagram and workflow of the main control module of DSP is given.A detailed analysis of the test data of sensor under the environment temperature of 0~100℃is carried out.The accuracy of measuring temperature is±1℃.In good electromagnetic environment,the maximum temperature measurement range is up to 5m.
出处
《压电与声光》
CAS
CSCD
北大核心
2016年第3期454-457,共4页
Piezoelectrics & Acoustooptics
