为实现高温恶劣环境下的精准测温,在课题组已经研制成功的钼铼合金超声导波测温传感器的基础上,开发了与之相配套的软硬件系统。硬件系统由FPGA主控电路、超声发射电路、回波接收电路、A/D转换电路和USB通信电路组成;软件系统是基于LabVIEW平台开发的一套控制界面,可以实现参数控制、超声回波显示、数据保存、互相关计算、温度解析及显示等功能。测试结果表明,该系统能够实现20~1 800 ℃范围内的测温,并且测量准确度较高,在实际工程中可作为一种测量设备被直接采用。
Abstract
In order to realize accurate temperature measurement under high temperature and harsh environment,a matching software and hardware system has been developed based on the Mo-Re alloy ultrasonic guided wave temperature sensor that has been successfully developed by the research group.The hardware system consists of FPGA main control circuit,ultrasonic transmitting circuit,echo receiving circuit,A/D conversion circuit and USB communication circuit.The software system is a set of control interface developed based on LabVIEW platform,which can realize the functions of parameter control,ultrasonic echo display,data storage,cross-correlation calculation,temperature analysis and display.The test results show that the system can realize the temperature measurement in the range of 20~1 800 ℃,and the measurement accuracy is high.It can be directly used as a kind of equipment in practical projects.
关键词
超声导波 /
LabVIEW /
FPGA /
数据采集系统
Key words
ultrasonic guided wave /
LabVIEW /
FPGA /
data acquisition system
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基金
*地下目标毁伤技术国防重点学科实验室开放研究基金项目(DXMBJJ202102);山西省自然科学基金项目(201901D111161)。
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