强电磁场条件下医用测温传感器的研究  

Temperature Measurement in Animals under the Condition of Strong Electromagnetic Field

作　　者：许博蔚 李威燃 田赫[1] 崔金刚[1] XU Bowei;LI Weiran;TIAN He;CUI Jingang(College of Science,Northeast Forestry University,Harbin 150040,China;College of Science,Heilongjiang University of Science and Technology,Harbin 150040,China)

机构地区：[1]东北林业大学理学院,黑龙江哈尔滨150040 [2]黑龙江科技大学理学院,黑龙江哈尔滨150020

出　　处：《佳木斯大学学报（自然科学版）》2023年第2期32-35,共4页Journal of Jiamusi University：Natural Science Edition

基　　金：中央高校基本科研业务费专项资金项目(2572022DJ03);东北林业大学教育教学研究项目(DGYZD2020-02)。

摘　　要：在肿瘤热疗过程中需要较强的电磁场,常用的热电转换传感器,其探头及电信号的传输会受到电磁场的干扰,产生测量误差。为实现强电磁场环境中温度的准确测量,利用光纤光栅的反射或透射波长随温度而变化的性质设计了一种测温传感器。该传感器利用体内安全材料对光纤光栅进行封装,以保证体内测温的安全性并避免外界各种应力对测温的影响,封装后的光纤光栅其探头直径约为1mm,长度约为3.5mm。温度测量实验以猪肉作为测量对象,温度控制在人体温度范围附近,实验结果表明,光纤光栅测温传感器可在强电磁条件下,实现对动物体内温度的有效测量。Strong electromagnetic field is required during tumor hyperthermia,the temperature measurement probe and signal transmission of common thermistor and thermocouple temperature sensors are easily disturbed by strong electromagnetic field,and thus the temperature measurement can’t be realized.Based on the optical fiber sensing technology in this paper,the fiber grating is applied to temperature measurement in animal bodies under the condition of strong electromagnetic field.In order to realize the safety of temperature measurement in the body,protect the fiber grating and reduce the temperature measurement error,the fiber grating is encapsulated with the safety material for the body.The encapsulation can effectively protect the body and temperature measurement probe,and avoid the influences of the external stress on the temperature measurement.After the encapsulation,the section diameter of the fiber grating probe is about 1mm and the length of it is about 3.5mm.In the temperature measurement experiment,the temperature response curve and the response time of the fiber grating probe are measured near the temperature range of the human body.And the temperature measurement error of the pork heated by the medical radiofrequency hyperthermia machine is also measured.The fiber grating temperature measurement system in this paper can achieve effective temperature measurement in animal bodies under the condition of strong electromagnetic field.

关 键 词：强电磁场 体内测温 光纤光栅 封装 

分 类 号：O436.1[机械工程—光学工程]