http://www.sensorwiki.org/ 2010-08-17T00:02:00-04:00 http://www.sensorwiki.org/ http://www.sensorwiki.org/lib/images/favicon.ico text/html 2010-08-15T23:05:22-04:00 joe http://www.sensorwiki.org/doku.php/isidm/sensors_and_actuators * Introductory References * Bibliography * Internet directory text/html 2010-05-05T11:11:28-04:00 ebritton http://www.sensorwiki.org/doku.php/sensors/strain_gauge Summary Introduction A strain gauge (alternatively: strain gage) provides an extremely simple and accurate way to measure even slight deformation of a solid surface or object. It is a relatively simple transducer that varies slightly in resistance when compressed or stretched, and can be bonded (using adhesive such as epoxy) to metal, plastic, wood, glass or other solids. The most common gauges measure strain only in one direction, but commercial gauges containing more than one sensor on a su… text/html 2010-05-05T10:48:02-04:00 ebritton http://www.sensorwiki.org/doku.php/sensors/force-sensitive_resistor Summary Introduction A force-sensitive resistor (alternatively called a force-sensing resistor or simply an FSR) has a variable resistance as a function of applied pressure. In this sense, the term “force-sensitive” is misleading – a more appropriate one would be “pressure-sensitive”, since the sensor's output is dependent on the area on the sensor's surface to which force is applied. text/html 2010-04-20T15:10:57-04:00 trevorknight http://www.sensorwiki.org/doku.php/sensors/air_pressure Summary Introduction Air pressure sensors are commonly used to measure breath pressure. They usually incorporate a diaphragm and strain gauge. A pressure chamber contains an inlet port and an outlet port, which are separated by a diaphragm. The diaphragm is mechanically linked to a strain gauge. text/html 2010-04-13T07:28:57-04:00 shannon http://www.sensorwiki.org/doku.php/sensors/hall_effect Summary Introduction To illustrate the way electrons behave as they travel through a conductor, let us look for a parallel example. The directional property of the flow of electrons though a conductor more closely resembles the flow of a hiker along a trail than water through a pipe. The trail is the path of least resistance, yet if subjected to an external force (say, for instance, the presence of a bear and cub) the hiker will veer to the opposite side of the trail. This is to say that the … text/html 2010-03-15T15:15:57-04:00 joe http://www.sensorwiki.org/doku.php/wiki/cleanup cleaned uphigher standard