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Arlington, TX  USA
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HASDMS-I
Human Activity State
Detection and Monitoring System

HASDMS_Photo_1

 Features
  • Computer Automated
  • Simple Set-up
  • Objective Measurement
  • Non-Invasive
  • Short Duration Test Protocols
  • Simple Operation and Result Format
  • HPM Family Compatible

The Model HASDMS-I is a system designed to detect and log selected human activity states over prolonged periods (up to 7 days). It consists of a Sensing and Logging Unit (SLU) and Windows-based Host Software that runs on a user supplied PC. The system is based on the observation that while humans engage in activities which are often quite complex dynamically and kinematically, there are distinct patterns that lead us to identify these activities with specific words such as standing, walking, etc. Such words are referred to as "activity states".

The HASDMS-I was designed to provide the greatest activity discrimination with the smallest possible sensor array (i.e., one sensing site on the body). The SLU is compact, battery powered instrument with special sensors and a microprocessor that is mounted to the lateral aspect of the monitored subject's thigh. It detects four unique activity states: (1) lying-sitting (grouped), (2) standing, (3) walking, and (4) running. A fifth state ("unknown") is also provided to discriminate unusual patterns from those which the system is designed to detect.

HASDMS_Photo_2The SLU is first connected to the Host PC (via a simple serial port connection) for initialization and start-up. It is then attached to the subject for an unsupervised monitoring session. When the session is complete, the SLU is again connected to the Host PC and logged data is uploaded to the host software for databasing, display, and analysis. Several standard activity summaries are provided including (1) percent time spent in different states and (2) total amount of time (hours, minutes, seconds) spent in different states. In addition, an Activity State History Graph depicts the type and duration of each state in a time-sequenced, scrollable window. Activity state data can be printed or exported in the form of an ASCII text file for any other user-specified analyses.

The HASDMS-I is HPM's first product outside the BEP Module Family. It emphasizes behavior (vs. performance).

Specifications are subject to change without notice.

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