Tracking system and device integrating existing positional tracking system and docking mechanism

A tracking system and a device integrating an existing positional tracking system and a docking mechanism, comprising:

• a tracking system hardware module essentially having a signal emitter, multiple sensor modules and a system controller, the sensor modules being mounted on a user's fingertips and a dorsal side of the user's hand, wherein the signal emitter and the system controller are mounted on the dorsal side of the user's hand such that the signal emitter receives control signals from the system controller and generates known electromagnetic signals, and, when the user's fingers move relative to the signal emitter, the sensor modules mounted on the fingertips measure the electromagnetic signals generated by the signal emitter and output measurement signals thus obtained;
• a docking mechanism mounted on the dorsal side of the user's hand and adapted to dock with the existing positional tracking system;
• and
• a positional tracking software module forming the tracking system together with the tracking system hardware module and having a signal processing module connected to the sensor modules, a posture estimation module connected to the signal processing module, and a hand gesture estimation module connected to the posture estimation module, wherein the signal processing module receives the measurement signals from the sensor modules, performs signal processing on the measurement signals, and sends the processed measurement signals to the posture estimation module for calculating a posture of each of the sensor modules and a posture data of each of the user's fingers relative to the signal emitter such that the posture data is used by the hand gesture estimation module to estimate a flexion state of each joint of each of the user's fingers and the fingers' posture relative to the hand, wherein, with the docking mechanism operating in conjunction with an existing third-party positional tracking system, a posture relation between the existing third-party positional tracking system and the tracking system is established with a known geometric design parameter of the docking mechanism, and absolute posture of the user's fingers in actual space is calculated according to the posture relation.