What is meant by MovementSlow and MovementFast in Xethru X4M200 circuit ?

Discussion in 'Respiration Sensor' started by Oshana Dissanayake, Nov 13, 2019.

  1. Oshana Dissanayake

    Oshana Dissanayake New Member

    In the white paper it is mentioned something like this,

    " In all states except Initializing and Error states, the following data is measured:
    MovementSlow: Movements for the previous 15 seconds
    MovementFast: Movements for the previous 6 seconds

    The movement metrics (MovementSlow and MovementFast) show the degree of movement as a
    relative number from 0 to 100 both for 5.14 cm intervals in the Detection Zone and for the entire
    Detection Zone. 0 means no Doppler cells above the detection threshold, while 100 means that all
    Doppler cells in the range interval are above the detection threshold. "

    Can you please let me know what this means exactly?What is exactly shown in the Xethru interface under the movement graph?
     
  2. Allen Wu

    Allen Wu Moderator Staff Member

    Hi Oshana,

    My understanding is that Movement Fast / Slow is the number of seconds it use for the Doppler algorithms. For Fast, it use previous 6 seconds data for the Fast Pulse-Doppler algorithms. For Slow, it use previous 15 or 20 seconds (depending on which Respiration profile) for Slow Pulse- Doppler algorithms.

    There are 4 Respiration profile, in X4M200 Datasheet chapter 4.1 Overview.
    https://www.xethru.com/community/resources/x4m200-respiration-sensor-datasheet.105/

    Allen
     
    Oshana Dissanayake likes this.
  3. Oshana Dissanayake

    Oshana Dissanayake New Member

    Thank you soo much !