scholarly journals An Analog-Digital Mixed Measurement Method of Inductive Proximity Sensor

Sensors ◽  
2015 ◽  
Vol 16 (1) ◽  
pp. 30 ◽  
Author(s):  
Yi-Xin Guo ◽  
Zhi-Biao Shao ◽  
Ting Li
Keyword(s):  
Measurement Method ◽  
Proximity Sensor

scholarly journals Dimension-Reduced Analog—Digital Mixed Measurement Method of Inductive Proximity Sensor

Sensors ◽  
2017 ◽  
Vol 17 (7) ◽  
pp. 1533 ◽  
Author(s):  
Yi-Xin Guo ◽  
Zhi-Biao Shao ◽  
Hui-Bin Tao ◽  
Kai-Liang Xu ◽  
Ting Li
Keyword(s):  
Measurement Method ◽  
Proximity Sensor

scholarly journals MEASUREMENT METHOD FOR SENSITIVITY ANALYSIS OF PROXIMITY SENSOR AND SENSOR ANTENNA INTEGRATION IN A HANDHELD DEVICE

2011 ◽  
Vol 20 ◽  
pp. 255-268 ◽  
Author(s):  
Sami Myllymaki ◽  
Arttu Huttunen ◽  
Heli Jantunen ◽  
Markus Berg ◽  
Erkki T. Salonen
Keyword(s):  
Sensitivity Analysis ◽  
Measurement Method ◽  
Proximity Sensor ◽  
Handheld Device ◽  
Antenna Integration

scholarly journals Differential Structure of Inductive Proximity Sensor

Sensors ◽  
2019 ◽  
Vol 19 (9) ◽  
pp. 2210 ◽  
Author(s):  
Yi-Xin Guo ◽  
Cong Lai ◽  
Zhi-Biao Shao ◽  
Kai-Liang Xu ◽  
Ting Li
Keyword(s):  
Process Control ◽  
Measurement Method ◽  
Maintenance Cost ◽  
Detection Accuracy ◽  
Temperature Drift ◽  
Proximity Sensor ◽  
Differential Structure ◽  
Position Detection ◽  
Look Up Table ◽  
Rf Energy

The inductive proximity sensor (IPS) is applicable to displacement measurements in the aviation field due to its non-mechanical contact, safety, and durability. IPS can increase reliability of position detection and decrease maintenance cost of the system effectively in aircraft applications. Nevertheless, the specialty in the aviation field proposes many restrictions and requirements on the application of IPS, including the temperature drift effect of the resistance component of the IPS sensing coil. Moreover, reliability requirements of aircrafts restrict the use of computational-intensive algorithms and avoid the use of process control components. Furthermore, the environment of airborne electronic equipment restricts measurements driven by large current and proposes strict requirements on emission tests of radio frequency (RF) energy. For these reasons, a differential structured IPS measurement method is proposed in this paper. This measurement method inherits the numerical separation of the resistance and inductance components of the IPS sensing coil to improve the temperature adaptation of the IPS. The computational complexity is decreased by combining the dimension-reduced look-up table method to prevent the use of process control components. The proposed differential structured IPS is equipped with a differential structure of distant and nearby sensing coils to increase the detection accuracy. The small electric current pulse excitation decreases the RF energy emission. Verification results demonstrate that the differential structured IPS realizes the numerical decoupling calculation of the vector impedance of the sensing coil by using 61 look-up table units. The measuring sensitivity increased from 135.5 least significant bits (LSB)/0.10 mm of a single-sensing-coil structured IPS to 1201.4 LSB/0.10 mm, and the linear approximation distance error decreased from 99.376 μm to −3.240 μm. The proposed differential structured IPS method has evident comparative advantages compared with similar measuring techniques.

Analysis of significant measures for thermal conductivity

2020 ◽  
pp. 35-42
Author(s):  
Yuri P. Zarichnyak ◽  
Vyacheslav P. Khodunkov
Keyword(s):  
Thermal Conductivity ◽  
Heat Flux ◽  
Surface Heat Flux ◽  
Heat Flux Density ◽  
Measurement Method ◽  
Conductivity Measurement ◽  
Surface Heat ◽  
Measuring Instrument ◽  
New Class ◽  
Achievable Accuracy

The analysis of a new class of measuring instrument for heat quantities based on the use of multi-valued measures of heat conductivity of solids. For example, measuring thermal conductivity of solids shown the fallacy of the proposed approach and the illegality of the use of the principle of ambiguity to intensive thermal quantities. As a proof of the error of the approach, the relations for the thermal conductivities of the component elements of a heat pump that implements a multi-valued measure of thermal conductivity are given, and the limiting cases are considered. In two ways, it is established that the thermal conductivity of the specified measure does not depend on the value of the supplied heat flow. It is shown that the declared accuracy of the thermal conductivity measurement method does not correspond to the actual achievable accuracy values and the standard for the unit of surface heat flux density GET 172-2016. The estimation of the currently achievable accuracy of measuring the thermal conductivity of solids is given. The directions of further research and possible solutions to the problem are given.

Acoustic Distance Measurement Method Using 2ch Microphones Measurable from 0m Based on Phase Interference and Removal of DC Component

2015 ◽  
Vol 135 (11) ◽  
pp. 1349-1350
Author(s):  
Kazuhiro Suzuki ◽  
Noboru Nakasako ◽  
Masato Nakayama ◽  
Toshihiro Shinohara ◽  
Tetsuji Uebo
Keyword(s):  
Measurement Method ◽  
Distance Measurement ◽  
Phase Interference ◽  
Dc Component
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