Results 121 to 130 of about 16,573 (161)

Capacitance sensor for microimaging

SPIE Proceedings, 2001
The ultimate aim of the work described here is to explore miniaturised electrical tomography systems. The initial target, described in this paper, has been to implement a sensor, integrated on silicon, and able to detect particles as small as 10 pm in diameter from changes in capacitance.
Trevor A. York, Iwan G. Evans, Zoran Pokusevski, Tomasz Dyakowski   +3 more
openaire   +1 more source

Capacitance Humidity Sensor

MRS Proceedings, 1995
ABSTRACTA capacitance relative humidity (RH) sensor is described that has a design, construction, and material composition that result in an inexpensive and robust sensor. This sensor has a multilayer, free-standing film construction. It consists of a humidity sensitive polyimide (PI) dielectric core and conductive layers consisting of carbon filled ...
Andrew R.K. Ralston, Paul E. Thoma, Carl F. Klein, Denice D. Denton   +3 more
openaire   +1 more source

Capacitive Angular-Position Sensor

2007
This paper describes the design, realization and experimental characterization of a capacitive angular position sensor. The sensor is composed of two parts, namely the sensing element and the dedicated signal conditioning electronic circuit. The sensor is based on a low-cost Printed Circuit Board technology for the electrodes, and the use of a thick ...
FERRARI, Vittorio, GHISLA, Alessio, MARIOLI, Daniele, TARONI, Andrea, FASOLATO P., MAGGI F., PELLOSO S., ROSSETTO V.   +7 more
openaire   +2 more sources

A high-accuracy differential-capacitance-to-time converter for capacitive sensors

2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS), 2015
A high-accuracy switched-capacitor (SC) differential-capacitance-to-time converter (DCTC) for capacitive sensors is presented for high-accuracy ratiometric operation. This circuit does not require component matching. Performances of the proposed circuit are simulated by HSPICE using 0.18 µm CMOS process parameters.
Masanari Nagai, Satomi Ogawa
openaire   +1 more source

Reducing the Effect of Parasitic Capacitance on the Micro-capacitive Humidity Sensor

2019 IEEE 14th International Conference on Nano/Micro Engineered and Molecular Systems (NEMS), 2019
It is the most important issue of how the effects of parasitic capacitance can be reduced during the development of micro-capacitive humidity sensor systems. For this purposes, in this paper, step-by-step optimizations were carried out through packaging and circuit to achieve a high-precision, high-stability, and high-repetition humidity sensor system.
Jihang Liu, Lidong Du, Yichen Pan, Yusi Zhu, Zhen Fang 0003, Zhan Zhao   +5 more
openaire   +1 more source

A Low-Power Capacitance-to-Voltage Converter For MEMS Capacitive Sensors

2019 31st International Conference on Microelectronics (ICM), 2019
A new low-power capacitance-to-voltage converter (CVC) for MEMS capacitive sensors is presented. The CVC is implemented using a charge transfer technique, based on a current signal. Its mainly composed of a current mirror and a negative feedback system.
Alaa Safwat, Ayman H. Ismail
openaire   +1 more source

A capacitance level sensor design and sensor signal enhancement

2011 6th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, 2011
This paper introduces a novel fringe field capacitive sensor. To enhance the sensor signal, various sensor electrode design strategies and a surface modification method are introduced, discussed and compared. The sensors are characterized by both simulations and experiments.
Yu-Ting Li, Chih-Ming Chao, Kerwin Wang
openaire   +1 more source

Single-Wafer Pressure Capacitive Sensor

2007 IEEE International Symposium on Circuits and Systems (ISCAS), 2007
A novel manufacturing process for pressure sensor without the need of wafer bonding is presented. Its main advantages are a simple fabrication process and an efficient integr ability with other devices. The sensor is composed of a polysilicon membrane that deflects due to the pressure difference applied over it.
R. G. Bolea, Antonio Luque, José M. Quero   +2 more
openaire   +1 more source

Digital Converter for Differential Capacitive Sensors

IEEE Transactions on Instrumentation and Measurement, 2008
A digital converter that directly translates variations in the capacitances of a differential-type capacitive sensor to a proportional digital value is described in this paper. A conventional dual-slope, analog-to-digital converter is suitably modified to obtain direct capacitance-to-digital conversion (CDC).
N. Madhu Mohan, A. R. Shet, S. Kedarnath, V. Jagadeesh Kumar   +3 more
openaire   +1 more source

Capacitive Sensor Basics

2009
This chapter contains sections titled: Basic Electrode Configuration Motion Sensing Plate Configurations Matching the Circuit to the Sensor Limits to ...
openaire   +1 more source