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The LSLE Activity Monitor (Actigraph) is a wrist-worn instrument that records body motion. The device uses a piezoelectric sensor to detect zero crossings. The zero crossing counts are stored in a 64K RAM memory chip that uses an interface unit to a PC for initialization and memory download. The interface unit is not flight-qualified so the analysis and initialization is performed on the ground. Memory capacity depends on the data packing option selected. The number of counts stored during a time period or epoch is programmed pre-flight. The packing options are optimized for expected activity (awake or sleep), memory capacity and battery life. The unit is powered by two 160 mAH lithium cells powers. The actigraph uses a wristband made of Nomex and Velcro to meet flight material requirements and ease of attachment in microgravity.

NASA transferred this monitor to the Museum in 2012.

Display Status

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.

Object Details

Country of Origin

United States of America

Type

EQUIPMENT-Medical

Manufacturer

Precision Control Design, Inc., United States of America

Dimensions

3-D: 9.5 × 8.9 × 4.4cm, 0.1kg (3 3/4 × 3 1/2 × 1 3/4 in., 1/4lb.)

Materials

Aluminum, steel, brass, nylon, Velcro, adhesive decal

Inventory Number

A20130028000

Credit Line

Transferred from the National Aeronautics and Space Administration

Data Source

National Air and Space Museum

Restrictions & Rights

Usage conditions apply
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