Use of CdTe Quantum Dots as Heat Resistant Temperature Sensor for Bearing Rotating Elements Monitoring

The thermal characteristics of bearing rotating elements are essential for the service evaluation of bearing. However, the existing monitoring methods are limited by bearing internal complex structure and extreme operating environment. Hence, based on the monitoring technology of CdTe quantum dots (QDs) sensor, an improved QDs sensor was fabricated by process optimization and polymers coating, which enables bearing rotating elements thermal monitoring for extreme working condition. First, the principle of the measurement was introduced and the existing problems were analyzed. Then, the influence of preparation process on temperature-dependent photoluminescence (PL) spectra of CdTe QDs was investigated. The performance improvement methods of the QDs sensor, both organic coating and inorganic coating, were investigated. The fabricated sensor named CdTe@PVA presents remarkable improved performance in fluorescence intensity, highest tolerable temperature and stability. In the end, a rolling bearing experimental rig was set up and the temperature of the bearing cage at different rotation speeds were captured by using the proposed CdTe@PVA sensor.

[1]  Rongrong Liu,et al.  Polymer-coated quantum dots. , 2013, Nanoscale.

[2]  D. Peroulis,et al.  Early-Warning Wireless Telemeter for Harsh-Environment Bearings , 2007, 2007 IEEE Sensors.

[3]  Vikram C. Sundar,et al.  Quantum-dot optical temperature probes , 2003 .

[4]  Yang Luo,et al.  Surface Modifications Technology of Quantum Dots Based Biosensors and Their Medical Applications , 2014 .

[5]  I.R. Matias,et al.  Quantum Dots-Based Optical Fiber Temperature Sensors Fabricated by Layer-by-Layer , 2006, IEEE Sensors Journal.

[6]  Dimitrios Peroulis,et al.  Wireless Temperature Sensor for Condition Monitoring of Bearings Operating Through Thick Metal Plates , 2013, IEEE Sensors Journal.

[7]  Shin-Tson Wu,et al.  Ultrastable, Highly Luminescent Organic–Inorganic Perovskite–Polymer Composite Films , 2016, Advanced materials.

[8]  Haibing Li,et al.  Selective inclusion of polycyclic aromatic hydrocarbons (PAHs) on calixarene coated silica nanospheres englobed with CdTe nanocrystals , 2007 .

[9]  Yongsheng Zhu,et al.  Design of Quantum Dots for Rolling Bearing Inner Ring-Cage Thermal Monitoring , 2017 .

[10]  F. Rauscher,et al.  Efficient polymer nanocrystal hybrid solar cells by improved nanocrystal composition , 2011 .

[11]  Christian Brecher,et al.  Developments for High Performance Machine Tool Spindles , 2007 .

[12]  S. Tripathi,et al.  Synthesis and characterization of TGA-capped CdTe nanoparticles embedded in PVA matrix , 2015 .

[13]  Dayang Wang,et al.  Layer-by-layer growth of polymer/quantum dot composite multilayers by nucleophilic substitution in organic media. , 2010, Angewandte Chemie.

[14]  H. Schmidt,et al.  Polymer ligand exchange to control stabilization and compatibilization of nanocrystals. , 2014, ACS nano.

[15]  N. Murase,et al.  Preparation‐Condition Dependence of Hybrid SiO2‐Coated CdTe Nanocrystals with Intense and Tunable Photoluminescence , 2010 .

[16]  Yi Jia,et al.  Wireless temperature sensor for bearing health monitoring , 2004, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[17]  E. Wang,et al.  One-pot synthesis of CdTe nanocrystals and shape control of luminescent CdTe-cystine nanocomposites. , 2006, Small.

[18]  Shuyun Jiang,et al.  Investigation of the High Speed Rolling Bearing Temperature Rise With Oil-Air Lubrication , 2011 .

[19]  Mingyuan Gao,et al.  Preparation of Fluorescent SiO2 Particles with Single CdTe Nanocrystal Cores by the Reverse Microemulsion Method , 2005 .

[20]  Lei Zhang,et al.  Quantum‐Dot‐Doped Polymer Nanofibers for Optical Sensing , 2011, Advanced materials.

[21]  D. Peroulis,et al.  Wireless temperature microsensors integrated on bearings for health monitoring applications , 2011, 2011 IEEE 24th International Conference on Micro Electro Mechanical Systems.

[22]  Jun Hong,et al.  Investigation of bearing inner ring-cage thermal characteristics based on CdTe quantum dots fluorescence thermometry , 2017 .

[23]  Julio Molleda,et al.  Infrared Thermography for Temperature Measurement and Non-Destructive Testing , 2014, Sensors.

[24]  A. Mansur,et al.  CdSe quantum dots stabilized by carboxylic-functionalized PVA: Synthesis and UV–vis spectroscopy characterization , 2011 .