Trigno wireless semg acquisition system

Three acquisition systems were used in this study. First, the human translations were traced using the Optitrack system, an optical motion capture system that tracks the three-dimensional trajectories of reflective markers mounted on the subject at 100 Hz. GRFs were measured using two multi-axis AMTI force plates, each with a sampling frequency of 100 Hz. The force plate data were filtered with a fourth-order Butterworth filter with a cutoff frequency of 6 Hz. Meanwhile, a 16-channel Delsys Trigno wireless sEMG acquisition system records the sEMG signals from 14 muscles of interest at 1.1 kHz.

In this paper, the Trigno Wireless sEMG acquisition system (Delsys Ltd., Boston, MA, USA) is used to collect multichannel sEMG signals of forearm muscles. The execution of different gestures is driven by specific muscles, so the selection of target muscle is related to the accuracy of gesture recognition. The muscles studied in [9 (link),10 ,11 (link)] are mainly extensor carpi radialis (ECR), extensor carpi ulnaris, extensor digitorum (ED) and palmaris longus. Through the decomposition of SL gestures, we can see that there are many kinds of finger movements in gestures. Therefore, it is necessary to increase the muscles related to finger movements in the analysis process. Thus, four groups of muscles, namely ECR, ED, Flexor digitorum superficialis (FDS) and extensor pollicis brevis (EPB), were selected as signal acquisition objects. The sEMG signal acquisition sensors are arranged at the positions of these four groups of muscles, and the specific positions are shown in Figure 2.