Journal ArticleDOI
New configurations for the measurement of small resistance changes
Stephan J. G. Gift,Brent Maundy +1 more
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TLDR
Three circuits for the measurement of small resistance changes offer the advantages of reduced bridge complexity and produce an output signal that is twice that of a proposed current-mode bridge and four times that of the conventional Wheatstone bridge.Abstract:
In this brief, three circuits for the measurement of small resistance changes are proposed. The circuits offer the advantages of reduced bridge complexity and produce an output signal that is twice that of a proposed current-mode bridge and four times that of the conventional Wheatstone bridge. Also, the circuits have no common mode input signal and can accommodate multiple sensors without additional circuitry. They employ different combinations of current conveyors and operational amplifiers and their operation has been verified by PSPICE simulation.read more
Citations
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Journal ArticleDOI
Theory, technology and applications of piezoresistive sensors: A review
TL;DR: A short, self-consistent vademecum which would be useful to researchers and engineers, since it focuses on the fundamentals of theory, materials, and readout-circuit design pertinent to the most recent developments in the field of piezoresistive sensors as mentioned in this paper.
Journal ArticleDOI
An Overview on the Second Generation Voltage Conveyor: Features, Design and Applications
TL;DR: It is shown that VCII is a very useful block in those configurations where CCII is limited, in terms of number of active blocks, and the CMOS implementation of VCII, for the first time, is presented.
Journal ArticleDOI
A Polypyrrole-based Strain Sensor Dedicated to Measure Bladder Volume in Patients with Urinary Dysfunction
Sumitra Rajagopalan,Mohamad Sawan,Ebrahim Ghafar-Zadeh,Ebrahim Ghafar-Zadeh,Oumarou Savadogo,Vamsy P. Chodavarapu +5 more
TL;DR: A new technique to measure urine volume in patients with urinary bladder dysfunction and the dynamic mechanical testing of the patterned polypyrrole on fabric is demonstrated to show the feasibility of passive interrogation of the strain sensor for biomedical sensing applications.
Journal ArticleDOI
Strain Gauge Amplifier Circuits
Brent Maundy,Stephan J. G. Gift +1 more
TL;DR: This paper presents several amplifier circuits for use with strain gauges that are inherently linear, produce four times the output of the standard Wheatstone bridge, and can easily be extended to accommodate multiple strain gauging.
Journal Article
A Low-Voltage Current-Mode Wheatstone Bridge using CMOS Transistors
TL;DR: In this paper, a new circuit arrangement for a current-mode Wheatstone bridge that is suitable for low-voltage integrated circuits implementation is presented, which features severe reduction of the elements number, low supply voltage (1V) and low power consumption (<350uW).
References
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Book
Design with Operational Amplifiers and Analog Integrated Circuits
TL;DR: In this article, the authors present a design-oriented course for operational amplifiers and analog ICs, which includes additional problems, more in-depth coverage of negative feedback, more effective layout, updated technology (current feedback and folded-cascode amplifiers, and low-voltage amplifiers), and increased topical coverage (current-feedback amplifier, switching regulators and phase-locked loops).
Journal ArticleDOI
AZKA cell, the current-mode alternative of Wheatstone bridge
Seyed Javad Azhari,Hooman Kaabi +1 more
TL;DR: In this paper, a new circuit topology based on duality of the well known voltage-mode Wheatstone bridge is described, which can implement ratiometric current measurement which is a vital aspect of current-mode instrumentation and signal processing.
Journal ArticleDOI
An oversampling converter for strain gauge transducers
D.A. Kerth,D.S. Piasecki +1 more
TL;DR: An oversampling converter that directly digitizes low-level strain gauge transducer outputs is presented and digital division of the two independent conversions produces a 20-b ratiometric measurement.
Journal ArticleDOI
Converters dedicated to long-term monitoring of strain gauge transducers
TL;DR: Two new strain gauge bridge-to-pulse position modulation (PPM) converters developed in 2-/spl mu/m BiCMOS technology are presented and are well suited for long term monitoring of orthopedic implants used for the treatment of bone fractures.