Journal ArticleDOI
An efficient signal conditioning circuit to piecewise linearizing the response characteristic of highly nonlinear sensors
TLDR
This paper presents a new and simple piecewise linearizing circuit to compensate the nonlinearity of highly nonlinear sensor and is CMOS compatible for ASIC implementation.Abstract:
To obtain the solutions to the problem of linearization of the sensor characteristics is a matter of investigations for a long time. This paper presents a new and simple piecewise linearizing circuit to compensate the nonlinearity of highly nonlinear sensor. It is having a mixed signal conditioning circuit, employing a 2-bit flash ADC, a ( 4 × 1 ) multiplexer and the Op amp-based signal conditioning units. The circuit was initially simulated using SPICE software and then hardware implemented for linearizing the nonlinear response characteristic of two sensors. One of the sensors is a graphene oxide capacitive humidity sensor with nearly 46% nonlinearity and the other is a thermistor-based temperature sensor with 16.4 % nonlinearity. The humidity sensor is fabricated and characterized to measure humidity in the range of 2–85% RH. The maximum nonlinearity of the humidity and temperature sensors of the hardware implemented circuit after compensation was 1% and 1.5 % respectively. The circuit is simple and requires few hardware components for implementation and applicable for any nonlinear sensor. The circuit is CMOS compatible for ASIC implementation.read more
Citations
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Journal ArticleDOI
Linearization of the sensors characteristics: a review
TL;DR: This paper presents a review of different methods applied to linearize sensor characteristics reported in the literature and concludes that the digital methods combined with software techniques perform the job with better flexibility and efficiency.
Journal ArticleDOI
High-Level Modeling and Simulation Tool for Sensor Conditioning Circuit Based on Artificial Neural Networks
TL;DR: The proposed standard tool enables modification of the neural model architecture to adapt its characteristics to those of the electronic system, resulting in accurate behavioral models that predict the complete microelectronic IC system behavior under different operation conditions before its physical implementation with a simple, time-efficient, and reliable solution.
Journal ArticleDOI
A constant phase impedance sensor for measuring conducting liquid level.
TL;DR: In this paper, the authors proposed a constant phase impedance sensor for the measurement of conducting liquid levels in the range of 0-4 cm for the first time, where the phase angle of the device changes due to a change in the liquid level.
Journal ArticleDOI
Algorithm Execution Time and Accuracy of NTC Thermistor-Based Temperature Measurements in Time-Critical Applications
TL;DR: This paper addresses the challenges of selecting a suitable method for negative temperature coefficient (NTC) thermistor-based temperature measurement in electronic devices and concludes that the look-up table is inferior compared to the Steinhart–Hart equation, despite the latter having far more complex mathematical functions.
Journal ArticleDOI
NTC thermistor nonlinearity compensation using wheatstone bridge and novel dual-stage single-flash piecewise-linear ADC
J Sasa Jovanovic,Dragan Denić +1 more
TL;DR: In this article , a method for NTC thermistor nonlinearity compensation using aWheatstone bridge and a novel dual-stage single-flash piecewise linear ADC was proposed.
References
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Graphene and its sensor-based applications: A review
TL;DR: An overview of the work done on graphene in recent years is presented in this article, which explains the preparation techniques, the properties of graphene related to its physio-chemical structure and some key applications.
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Process Control Instrumentation Technology
TL;DR: The sixth edition of Process Control Instrumentation Technology as mentioned in this paper provides a comprehensive working knowledge of process control and control systems, from the fundamental theoretical concepts to the more practical aspects of assembling, troubleshooting, adjusting and operating a control system.
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E-SAP: Efficient-Strong Authentication Protocol for Healthcare Applications Using Wireless Medical Sensor Networks
TL;DR: It is demonstrated that E-SAP is more secure against many practical attacks, and allows a tradeoff between the security and the performance cost for healthcare application using WMSNs.
Journal ArticleDOI
Humidity sensing behaviors of graphene oxide-silicon bi-layer flexible structure
TL;DR: In this paper, a spin-coating method was used to use graphene oxide-silicon bi-layer flexible structure as stress-based humidity sensors, and the results show that the structure exhibits high humidity sensitivity, good repeatability, small humidity hysteresis and clear and fast response-recovery.
Journal ArticleDOI
Smart Sensors and Internet of Things: A Postgraduate Paper
TL;DR: A course on the emerging topic "Smart Sensors and Internet of Things (IoT)" has been designed, developed, and delivered from 21st March 2016 to 31th March 2016 in the Department of Electrical Engineering, Jamia Millia Islamia (Central University), New Delhi-110025, India.