%0 Journal Article %A Cole, David %A Fleming, Paul %A Forrester, Steph %A Morrison, Kelly %D 2020 %T Spatial measurements for artificial turf systems using hall effect sensors %U https://repository.lboro.ac.uk/articles/journal_contribution/Spatial_measurements_for_artificial_turf_systems_using_hall_effect_sensors/12613715 %2 https://repository.lboro.ac.uk/ndownloader/files/23708810 %K Hall effect sensors %K Artificial turf %K Boot–surface interaction %K Stud tracking %K Compression %K Sports Technology Institute %X The purpose of this study was to evaluate a bespoke spatial measurement methodology using Hall Effect Sensors (HES), i.e., utilizing inductance between a permanent magnet and sensor to indirectly measure the magnet position. The aim is to embed the magnet in a boot’s stud and use an array of sensors in the artificial turf. To evaluate the accuracy and applicability of a HES system in sports turf, two studies were carried out. To measure the spatial position vertically, a standard mechanical dynamic impact testing with the magnet embedded, and the sensors below the turf carpet, was compared to the gold standard optical reference measurement system (GOM UK Ltd.: Coventry, UK) . A second study evaluated the horizontal spatial accuracy for sensors in a variable array with a controlled incremental step movement of the magnet on a precise engineering workshop table. %I Loughborough University