accelerometer


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Related to accelerometer: gyroscope

ac·cel·er·om·e·ter

(ak-sel-er-om'ĕ-ter),
An instrument for measuring the rate of change of velocity per unit of time.

accelerometer

Any instrument used to measure acceleration.

Typically, accelerometers contain a small mass, connected to a stiff spring, with some electrical means of measuring the spring deflection when the mass is accelerated; the type of accelerometer used in gait analysis is usually very small and measures acceleration in one direction, but can be clustered for two- and three-dimensional measurements.

accelerometer

(ak″sel-ĕ-rom′ĕ-tĕr) [ acceler(ation) + -meter]
An instrument that detects a change in the velocity of the object to which it is attached. The device may be designed to record the changes and indicate the direction(s) of the acceleration.
References in periodicals archive ?
'We created a piezoresistive NEMS accelerometer that is dramatically smaller than any MEMS accelerometers available today, but retains the sensitivity these systems require.'
Using the accelerometer and the gyroscope together allows for more accurate fall detection.
In uniform motion ([f.sub.x] = [f.sub.y] [approximately equal to] 0), according to the accelerometer error parameters and (12), we can conclude that aM A * g [approximately equal to] 194 [micro]g < aB = 500 [micro]g.
Troiano, "Accelerometer use in physical activity: Best practices and research recommendations," Medicine & Science in Sports & Exercise, vol.
Two types of the vibration sensor that has a triple axis accelerometer sensor are MMA7361 and ADXL335.
This vector, which describes the response along the direction of maximum response of the r-axis accelerometer, is useful here because it can be expressed in the (x, y, z) coordinate system of the gimbal, as can the acceleration vector
To facilitate the analysis, accelerometer is separated from the original system, as shown in Figure 2.
The front-end subsystem is the accelerometer sensor with a microcontroller for data acquisition and tilting angle transformation in digital formats.
Figure 2 shows the dimensions of the used capacitive accelerometer and Table 1 shows the properties of Silicon.
12, from the Google Play Store and runs in the background with little power, so that a phone's onboard accelerometers can record local shaking any time of the day or night.
After surgery, the patient was asked to walk with a triaxial accelerometer (Hitachi H48C 3-Axis Accelerometer Module, Hitachi Metals Co., Ltd., Tokyo, Japan) (Figure 3(a)) placed on the upper end of the patella on the femoral side and on the tibial tubercle on the tibial side and a heel sensor (Click BP, Tokyo Sensor Co., Ltd., Tokyo, Japan) (Figure 3(b)) placed on the heel in order to determine the stance phase and the swing phase.