Bo Vincent Wenger

Bio: Bo Vincent Wenger is an academic researcher from Assiniboine Community College. The author has contributed to research in topics: Capacitive sensing & Signal conditioning. The author has an hindex of 1, co-authored 1 publications receiving 2 citations.

New PLL based signal conditioning circuitry for capacitive sensors

Abstract: This paper presents a new capacitive signal-conditioning interface, employing a Phase Locked Loop (PLL) circuit. The entire circuit design is based on the principle of capacitance-frequency-voltage conversion. The CD4046 digital phase-locked loop (Fairchild Semiconductor) was used for the circuit implementation since it offers approximately 1% linearity, which is suitable for most applications [1]. The functional sensor material used was Polyvinylidene Fluoride (PVDF) and this was mixed with 7wt.% Ethyl Cellulose and 1wt.% Lecithin. Terpinol-α was used as the solvent to form the thick film paste. The circuit sensitivity has been tested with the developed thick film sensor in terms of output circuit voltage versus capacitance change. It was found that the developed circuit has lower power consumption when compared to standard frequency-to-voltage converter configurations.

Digital and analog communication systems

Abstract: Add this article to private library Remove from private library Submit corrections to this record View record in the new ADS The book presents an introductory treatment of digital and analog communication systems with emphasis on digital systems. Attention is given to the following topics: systems and signal analysis, random signal theory, information and channel capacity, baseband data transmission, analog signal transmission, noise in analog communication systems, digital carrier modulation schemes, error control coding, and the digital transmission of analog signals. Bibtex entry for this abstract Preferred format for this abstract

Sensor interface for hostile environments

Abstract: An interface circuit for a sensor including: a first injection-locked oscillator having: a first input coupled to a sensor, a free-running oscillation frequency of the first injection-locked oscillator being controlled by a signal from the sensor; and a second input coupled to receive a synchronization signal at a reference frequency, the first injection-locked oscillator being adapted to generate an output signal at said reference frequency, the output signal being phase shifted with respect to the synchronization signal as a function of the signal from the sensor.