INSTRUMENTATION A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site accelerometer Developed by Steve Arms and his colleagues at MicroStrain, the G-LINK Wireless Accelerometer nodes monitored vibration and shock loads within the Liberty Bell during its relocation. Image credit: MiocroStrain, Inc. Caption text: NSF An instrument that measures acceleration or the gravitational force capable of imparting acceleration. An accelerometer usually employs a concentrated mass that resists movement because of its inertia; acceleration is measured in terms of the displacement of this mass relative to its supporting frame or container. The simplest example of an accelerometer is a plumb bob suspended from the object being accelerated. The angle of the plumb bob is proportional to the acceleration. A more sophisticated version, used in ballistic missiles, is an electromechanical device that translates the acceleration into electric current. Modern accelerometers are typically micro-machined silicon sensors that are based on the capacitive, piezo-resistive or optical detection of the deflection a small mass experiences when the sensors is subjected to acceleration. Related category    • INSTRUMENTATION Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP