基于LaCaBaMnO材料磁电阻效应的温度与磁强测量仪的设计
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摘要
随着物联网技术的快速发展,智能设备的小型化要求传感器可以采集更多的信息。采用溶胶凝胶法与高温烧结工艺制得块状La_(2/3)(Ca_(0.6)Ba_(0.4))_(1/3)MnO_3多晶靶材,使用脉冲激光沉积法将该块状靶材沉积在石英玻璃衬底上制得钙钛矿结构的氧化物薄膜,最后用EVA树脂将该样品封装成磁电阻传感器件。通过分析该传感器件的磁电阻特性,选用高精度集成ADC微处理器与匹配调理电路,设计了一种小型温度与磁强测量仪。
With the rapid development of IoT,the miniaturization of smart drievers requires sensors to gather more information. The material of La_(2/3)(Ca_(0.6)Ba_(0.4))_(1/3)MnO_3 polycrystalline material is successfully prepared by the method of Sol-Gel and combinated with high temperature calcination. Using pulse laser deposition method to the block material deposited on quartz glass substrate with perovskite structure of oxide film,the film is encapsulated into a magnetoresistance sensor with EVA resin. By analyzing the magnetic resistance sensor,a portable measuring instrument for detecting magnetic field intensity and temperature is designed with the high precision of integrated ADC microprocessor and matched conditioning circuit.
With the rapid development of IoT,the miniaturization of smart drievers requires sensors to gather more information. The material of La_(2/3)(Ca_(0.6)Ba_(0.4))_(1/3)MnO_3 polycrystalline material is successfully prepared by the method of Sol-Gel and combinated with high temperature calcination. Using pulse laser deposition method to the block material deposited on quartz glass substrate with perovskite structure of oxide film,the film is encapsulated into a magnetoresistance sensor with EVA resin. By analyzing the magnetic resistance sensor,a portable measuring instrument for detecting magnetic field intensity and temperature is designed with the high precision of integrated ADC microprocessor and matched conditioning circuit.
引文
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[2]Brown P,Beek T,Carr C,et al.Magnetoresistive Magnetometer for Space Science Applications[J].Measurement Science and Technology,2012,23(2):025902.
[3]陈水源,陈志高,叶晴莹,等.La-(Ca,Ba)-Mn-O材料磁电阻特性[J].中国稀土学报,2003,21(s1):82-85.
[4]Bertoldi A,Bassi D,Ricci L,et al.Magnetoresistive Magnetometer with Improved Bandwidth and Response Characteristics[J].Review of Scientific Instruments,2005,76(6):227.
[5]陈水源,韩森,侯薇薇,等.一种温度磁场薄膜传感材料及其制备方法:,CN106987811A[P].2017.
[6]陈士荣.磁电阻传感器的应用与发展[J].传感技术学报,2002,15(4):344-346.
[7]Rife J C,Miller M M,Sheehan P E,et al.Design and Performance of GMR Sensors for the Detection of Magnetic Microbeads in Biosensors[J].Sensors and Actuators A Physical,2003,107(3):209-218.
[8]张斌.基于C8051F350的高精度压力数据采集系统的设计[J].电工技术,2009(3):56-60.
[9]C8051F3XX系列器件手册[EB/OL].新华龙电子有限分司,www.xhl.com.cn.
[10]王化祥,张淑英.传感器原理及应用[M].第3版.天津:天津大学出版社,2007:59-90.
[11]Guo S P,Lan-Jun W U,Liu H.Design of Multipoint Temperature Measurement and Control System by Platinum Resistor[J].Journal of Transducer Technology,2004,23(1):67-69.
[12]张修太,胡雪惠,翟亚芳,等.基于PT100的高精度温度采集系统设计与实验研究[J].传感技术学报,2010,23(6):812-815.
[13]轩春青,轩志伟,陈保立.基于最小二乘与粒子群算法的压力传感器动态补偿方法[J].传感技术学报,2014,27(10):1363-1367.
[14]汪晓东,万旭,赵鹏程,等.基于神经网络的传感器静态误差综合修正方法[J].传感技术学报,1997,18(3):310-313.
[15]刘一江,孟立凡,张志杰.基于遗传算法的传感器动态特性改善方法[J].传感技术学报,2013,26(9):1248-1253.
[16]刘清,曹国华.基于微粒群算法优化的微硅加速度传感器动态补偿研究[J].传感技术学报,2006,27(12):1707-1710.