Dynaport Move Monitor

The DynaPort Move Monitor is an electronic motion evaluation system designed for use by rehabilitation researchers or therapists. This unit consists of a small lightweight case containing a tri-axial accelerometer, a USB connector for charging and communication, and a MicroSD card for raw data storage. The accelerometer is attached to an elastic strap and positioned on the lower back at the height of the second lumbar vertebra, which serves as an approximation of the body’s centre of mass. The seismic accelerometer responds to both slow and fast changes in acceleration relative to Earth’s gravitational field, allowing it to detect posture and motion. Inclination, indicated by the amount of gravity measured, provides information about the angle of the sensor surface compared to the horizontal plane. The inclination and acceleration of body segments reveal information about posture and motion of the individual wearing the unit. The sensor has a selectable full scale of ±2g or ±6g and is capable of measuring acceleration over a bandwidth of 640 Hz for all axes. The resolution is 1mg in the 2g range and ±3mg in the ±6g range. The sample frequency is set to 100Hz. Other features include automatic start and stop, an internal clock for time and date registration, and an LED indicator of system status. Since it is possible to pre-program the initiation date and time of the measurement, the unit can be given or sent to the patient without the need of interaction with the researcher or caregiver. If the unit is not worn, this is detected automatically. POWER: Uses rechargeable lithium polymer battery, which allows for a full week of continuous monitoring and 7 days of stand-by time. DIMENSIONS: 85 x 58 x 11.5 millimeters; with rubber ring, 106.6 x 58 x 11.5 millimeters. WEIGHT: 55 grams.