Results 201 to 210 of about 14,123 (250)
Some of the next articles are maybe not open access.
Capacitance sensing drop counter
Journal of Biomedical Engineering, 1989A simple and inexpensive capacitive sensor which fits around any normal drip chamber has been devised. When it is made part of a suitable AC bridge circuit, the small changes in capacitance caused by the presence of a drop between the sensor plates can be reliably detected. The sensor is insensitive to its position on the drip chamber or to tilt of the
D R, Kirkby, P J, Hillson, C A, Mosse
openaire +2 more sources
Capacitive proximity sensing in smart environments [PDF]
Journal of Ambient Intelligence and Smart Environments, 2015 To create applications for smart environments we can select from a huge variety of sensors that measure environmental parameters or detect activities of different actors within the premises. Capacitive proximity sensors use weak electric fields to recognize conductive objects, such as the human body.
Andreas Braun 0001 +3 more
openaire +1 more source
2009 International SoC Design Conference (ISOCC), 2009
Non invasive health monitoring systems are gaining great importance due to regular monitoring of health without the painful measurements for each test. Here we use the concept of capacitive sensing to measure heart rate and blood pressure noninvasively. The capsense technology has played a vital role in switching applications but our aim is to make the
R. Vishal, B. Poonkathirvelan
openaire +1 more source
Non invasive health monitoring systems are gaining great importance due to regular monitoring of health without the painful measurements for each test. Here we use the concept of capacitive sensing to measure heart rate and blood pressure noninvasively. The capsense technology has played a vital role in switching applications but our aim is to make the
R. Vishal, B. Poonkathirvelan
openaire +1 more source
Distributed sensing in capacitive conductive composites
2017 IEEE SENSORS, 2017In this paper, we describe a capacitance-based strain field sensor. The device is interrogated at a single location, and uses multiple excitation frequencies to resolve the spatial distribution of strain. The system we model is representative of a capacitor composed of a graphite-based conductive elastomer composite in a silicone binder with a silicone
Edward L. White +2 more
openaire +1 more source
SAE Technical Paper Series, 1998
<div class="htmlview paragraph">Capacitive occupant sensing is described, beginning with sensor physics, sensor structure and implementation, basic attributes, and vehicle integration. Real-world sensing challenges, vehicle application pro's and con's, and combinations of capacitive and other occupant sensing technologies are then discussed.< ...
openaire +1 more source
<div class="htmlview paragraph">Capacitive occupant sensing is described, beginning with sensor physics, sensor structure and implementation, basic attributes, and vehicle integration. Real-world sensing challenges, vehicle application pro's and con's, and combinations of capacitive and other occupant sensing technologies are then discussed.< ...
openaire +1 more source
Prototyping Capacitive Sensing Applications with OpenCapSense
GetMobile: Mobile Computing and Communications, 2016OpenCapSense is a prototyping platform to develop innovative applications that rely on perceiving humans with electric fields. Despite today's use of capacitive sensing mostly as a method to detect touch, it offers many interesting facets that range from mid-air interaction to contactless indoor localization and identification.
Tobias Grosse-Puppendahl +2 more
openaire +1 more source
Label-free capacitance DNA sensing
2013 Seventh International Conference on Sensing Technology (ICST), 2013This paper presents the use of direct capacitance measurements for label free hybridization detection of ssDNA immobilized directly on a gold interdigitated array of microelectrodes (IDAM). Thiol modified 18 bases long Poly-dT ssDNA molecules were immobilized on the Au IDAM surface without the use of any isolative self assembled monolayer (SAM ...
Phillip M. Rivera Ortiz +3 more
openaire +1 more source
2010
The capacitive sensing electrodes on the top of a CMOS chip serve as an interface between the microelectronic readout system and the biological/chemical analyte. These electrodes are directly exposed to the analyte or an intermediate layer which will be described in Chapter 3 (Fig. 2.1). The sensing electrode can be realized by a standard CMOS process.
Ebrahim Ghafar-Zadeh, Mohamad Sawan
openaire +1 more source
The capacitive sensing electrodes on the top of a CMOS chip serve as an interface between the microelectronic readout system and the biological/chemical analyte. These electrodes are directly exposed to the analyte or an intermediate layer which will be described in Chapter 3 (Fig. 2.1). The sensing electrode can be realized by a standard CMOS process.
Ebrahim Ghafar-Zadeh, Mohamad Sawan
openaire +1 more source
High SNR Capacitive Sensing Transducer
2006 IEEE International Symposium on Circuits and Systems, 2006This paper describes a high signal-to-noise ratio capacitive sensing transducer with high power efficiency and high area efficiency. The circuit is an example of capacitive circuit and is based on a capacitive feedback charge amplifier. 78.6dB SNR in audio band is achieved with less than 0.5 /spl mu/W power consumption by making use of a floating-gate ...
Sheng-Yu Peng +4 more
openaire +1 more source
Droplet-based interfacial capacitive sensing
Lab on a Chip, 2012This paper presented a novel droplet-based pressure sensor using elastic and capacitive electrode-electrolyte interfaces to achieve ultrahigh mechanical-to-electrical sensitivity (1.58 μF kPa(-1)) and resolution (1.8 Pa) with a simple device architecture.
Baoqing, Nie +3 more
openaire +2 more sources