If you want to join in as a FreeMoCap user, developer, or just for fun - here are some options to do so (Note to mods - I got permission to post these links via ModMail. ** To be clear, we are very far from that goal, but we'll get there eventually! We hope to develop the FreeMoCap system to address both issues by (eventually!) **creating a research-grade, scientific tool that can be recreated for less than 100$US by a 14 year old with no technical training and no outside assitance. My position affords me the ability to make a dent in both (1) and (2) and I have a moral responsibility to do so. There is a tremendous gap between the incredible advances happening in the field of machine learning/computer vision and the general population. There really aren't many (any?) good high-quality, low-cost motion capture options available out there As the project progressed, I discovered some important things. It turns out its pretty hard to do human subjects research during a global pandemic, so this project started out as something for my lab to work on during lockdown (I've been dreaming of building something like this since I discovered OpenPose in 2017). To provide an absolute reference for vertical displacement, the bottom magnetic target should be installed into stable ground together with a geodetic survey of the top of the installation.ĭata acquisition is either by WI-SOS 480 wireless digital Nodes or other GeoLogger systems.The Free Motion Capture (FreeMoCap) project All the digital sensors are BUSSED together allowing fast and reliable communication.Īny combination of extension rod lengths (1, 1.5, 2 & 2.5m) and IPIs (0.5m) can be used so that sensors can be located at the required depths. Horizontal displacement is measured through tilt by the In-Place Inclinometer to provide a 3D profile of the borehole. Vertical displacement is measured by the relative position of the magnetic targets from their original position. 2.1b), the larger cracks might be seen to have a more significant impact on.

Magnetic targets are positioned at various locations along the length of the inclinometer casing corresponding to the location of the Magnetic Positional Sensors. of the crack width at different strain levels, as well as the IPI for. The system is placed vertically within inclinometer casing in a borehole. It comprises an In-place Inclinometer with the addition of a low power digital Magnetic Positional Sensor inside the adjoining extension rod. The IPI-X is an Automatic Magnetic Extensometer combined with an In-Place Inclinometer which can be used typically to measure vertical and horizontal displacement in embankments, dam foundations, deep foundations and around tunnels and diaphragm walls.

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