scholarly journals An Improved Zero Potential Circuit for Readout of a Two-Dimensional Resistive Sensor Array

Sensors ◽  
2016 ◽  
Vol 16 (12) ◽  
pp. 2070 ◽  
Author(s):  
Jian-Feng Wu ◽  
Feng Wang ◽  
Qi Wang ◽  
Jian-Qing Li ◽  
Ai-Guo Song
Keyword(s):  
Sensor Array ◽  
Two Dimensional ◽  
Resistive Sensor ◽  
Zero Potential

scholarly journals General Voltage Feedback Circuit Model in the Two-Dimensional Networked Resistive Sensor Array

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
JianFeng Wu ◽  
Lei Wang ◽  
JianQing Li
Keyword(s):  
General Model ◽  
Sensor Array ◽  
Mathematical Expression ◽  
Array Size ◽  
Two Dimensional ◽  
Feedback Circuit ◽  
Test Experiment ◽  
Resistive Sensor ◽  
Feedback Circuits ◽  
Voltage Feedback

To analyze the feature of the two-dimensional networked resistive sensor array, we firstly proposed a general model of voltage feedback circuits (VFCs) such as the voltage feedback non-scanned-electrode circuit, the voltage feedback non-scanned-sampling-electrode circuit, and the voltage feedback non-scanned-sampling-electrode circuit. By analyzing the general model, we then gave a general mathematical expression of the effective equivalent resistor of the element being tested in VFCs. Finally, we evaluated the features of VFCs with simulation and test experiment. The results show that the expression is applicable to analyze the VFCs’ performance of parameters such as the multiplexers’ switch resistors, the nonscanned elements, and array size.

Improved FRZPC for the two-dimensional resistive sensor array

2018 ◽  
Vol 12 (2) ◽  
pp. 278-282 ◽  
Author(s):  
Lei Wang ◽  
Xiu-Lan Wen ◽  
Jin-Ji Pan ◽  
Liang Yang
Keyword(s):  
Sensor Array ◽  
Two Dimensional ◽  
Resistive Sensor

Linear readout circuit for simultaneously accessing two elements in the two-dimensional resistive sensor array

2021 ◽  
pp. 1-1
Author(s):  
Jian-Feng Wu ◽  
Rui-Heng Wang ◽  
Xiang-Yu Ye ◽  
Cong Hu ◽  
Feng Wang
Keyword(s):  
Sensor Array ◽  
Two Dimensional ◽  
Readout Circuit ◽  
Resistive Sensor

3-sensor array for hand held breath diagnostic tool

2013 ◽  
Vol 1533 ◽  
Author(s):  
P. Gouma ◽  
S. Sood
Keyword(s):  
Diagnostic Tool ◽  
Sensor Array ◽  
Gas Sensing ◽  
Orthorhombic Phase ◽  
Structural Transformations ◽  
Polymorphic Transitions ◽  
Heat Treated ◽  
Gas Sensing Properties ◽  
Resistive Sensor ◽  
Resistance Value

ABSTRACTPolymorphic transitions in nanocrystalline metal oxides leads to structural transformations resulting in differing properties at varying operating temperatures. Nanocrystalline MoO3 transforms from a metastable monoclinic phase to stable orthorhombic phase when heat treated in the temperature range of 420C to 500C. Gas sensing results have shown that at 420C MoO3 is sensitive to Isoprene, a 450C it shows sensitivity to CO2 and to ammonia at 500C. DSC data has proved that MoO3 changes crystal structure to monoclinic at 420C and to orthorhombic at about485C. This confirms a correlation between structure and gas sensing properties of MoO3. Using this knowledge a hand-held diagnostic tool is developed to monitor specific breath gases which can be biomarkers for diseases. The device consists of three sensors, the read-out gives a real time resistance value for each resistive sensor which is stored in a microprocessor. This is a one of a kind handheld tool for disease detection using ceramic sensors as detectors for gases which are known to be biomarkers for diseases.

Design and Crosstalk Error Analysis of the Circuit for the 2-D Networked Resistive Sensor Array

2015 ◽  
Vol 15 (2) ◽  
pp. 1020-1026 ◽  
Author(s):  
JianFeng Wu ◽  
Lei Wang ◽  
JianQing Li
Keyword(s):  
Error Analysis ◽  
Sensor Array ◽  
Resistive Sensor

Improved resistance matrix approach for readout of the two-dimensional resistive sensor array

2018 ◽  
Vol 41 (3) ◽  
pp. 875-882 ◽  
Author(s):  
Jian-Feng Wu ◽  
Shang-Shang He ◽  
Feng Wang ◽  
Yu Wang ◽  
Xin-Gang Zhao ◽  
...  
Keyword(s):  
Measurement Error ◽  
Sensor Arrays ◽  
Circuit Complexity ◽  
Low Complexity ◽  
Two Dimensional ◽  
Matrix Approach ◽  
Readout Circuit ◽  
Readout Circuits ◽  
Resistive Sensor ◽  
Resistance Matrix

In the readout circuits of the two-dimensional (2-D) resistive sensor arrays, various auxiliary electrical components were used to reduce their crosstalk errors but resulted in increased circuit complexity. Readout circuits with low-complexity structures were necessary for wearable electronic applications. With only several resistors and a microcontroller, readout circuit based on resistance matrix approach (RMA) achieved low complexity but suffered from small resistance range and large measurement error caused by the output ports’ internal resistances of the microcontroller. For suppressing those negative effects, we firstly proposed an improved resistance matrix approach (IRMA) by additionally sampling the voltages on all driving row electrodes in the RMA. Then the effects of the output ports’ internal resistances and the analog-to-digital converter’s accuracy for the RMA and the IRMA were simulated respectively with NI Multisim 12. Moreover, a prototype readout circuit based on the IRMA was designed and tested in actual experiments. The experimental results demonstrated that the IRMA, though it required more sampling channels and more computations, could be used in those applications needing low complexity, small measurement error and wide resistance range.

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