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From globalspec.com
There has been growing interest in “lifelog”, which is a concept introduced by the Defense Advanced Research Projects Agency (DARPA) in 2003. A lifelog records and stores a person's experience in and interactions with the world. The goal of the lifelog is to build a digitized “surrogate memory” to assist in recalling personal experiences [1-3]. Several wearable systems have been developed to support this digitization of personal experience and they are typically equipped with a video camera and a microphone that record the user’s visual and auditory experience [4, 5]. The physical state of the user is often monitored with biomedical sensors, such as a blood pressure sensor [2], while the user’s orientation and movements are typically picked up by GPS and inertial sensors [5]. The physical interactions between the user and surrounding objects can be detected by pressure and force sensors [6, 7] or inferred from visual information [4]. However, the placement and wiring of the sensors may interfere with contact, and it is difficult to judge if the contact truly happens when the object is occluded by the user’s hand.
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Sensor chips are dies incorporating semiconductor circuit elements that are used to convert changes to some physical parameter to an electrical signal.
Tachometers are used to measure the velocity of a rotating object. They operate on the principle that a driven motor (i.e., a motor operated as a generator) produces a voltage that is proportional to the angular velocity of the motor shaft.
Stroboscope instruments are used for inspection and observation of moving parts by freezing or slowing down the action of an object.
Liquid level sensors are used to detect liquid levels or interfaces between liquids such as oil and water or liquids and solids.
Engineering analysis and modeling software is designed to model, analyze, and predict responses and interactions for applications such as materials, structures, chemical and biological processes, electronic system performance, etc.
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Topics of Interest
In This Chapter
Introduction to Robotic Manipulators
Classifi cation of Sensors
Encoders and Dead Reckoning
Infrared Sensors
Ground-based RF Systems
Active Beacons...
(Read More)
As time goes by, the typical state-of-the-art plant in the chemical process industries (CPI) increasingly resembles a robot. A modern plant has sensors like a robot, it has nervelike communication...
(Read More)
Photoelectric sensors are used in many applications and industries to provide accurate detection of objects without physical contact. In its most basic form, a photoelectric sensor can be thought of...
(Read More)
Infrared is an invisible portion of the light spectrum extending from 0.75 to1000 microns. Any object warmer than absolute zero (0 degrees Kelvin) emits energy somewhere within that range.
An infrared...
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Since atomic force microscopy (AFM) provides the ability to investigate surface structure at nanometerto-subangstrom resolution in ambient and liquid environments, it has been used routinely over the...
(Read More)
Technical Articles
Revealing Invisible Traces of Hand-Object Interactions with Thermal Vision (.pdf)
- Video Cameras and Accessories
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