Tracking device, tracking system including the same, and tracking method for the tracking device

Tracking Device

This technology is a mechanism for a mobile tracking device equipped with a positioning module containing multiple positioning nodes, an imaging module, and a sensor module. The device uses a controller to measure the distance to a target node, set a path, and sense obstacles and moving objects to perform path correction, stopping, and re-tracking. In particular, the positioning module calculates the target position through a node configuration of isosceles right triangles and squares, and uses a verification and correction algorithm based on combinations of three nodes.

Existing GPS-based indoor positioning suffers from low accuracy and signal distortion, as well as the inconvenience of having to pre-install positioning nodes throughout the entire area. Furthermore, there is a lack of safety due to the inability to respond to fixed obstacles or sudden moving objects encountered during real-time movement.

This technology utilizes four positioning nodes installed inside the mobile unit to dynamically calculate the distance to a target node. Based on data input from the imaging module and sensor module, the controller controls the real-time path (avoidance, stopping, and restarting). Specifically, it adopts a computational structure that combines three out of the multiple nodes to measure distance, while using the remaining nodes to verify and correct the data. It can be applied to rehabilitation training, gait assistance, and medical/welfare services, improving the accuracy of positioning the target object and enhancing environmental management capabilities by modifying the path based on obstacle detection.

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Key Features:

• A tracking device that verifies and corrects the measured distance at least once using three positioning nodes, including the remaining positioning nodes.
• A controller that receives data from the positioning module, imaging module, and sensor module to set the path and control the operation of the drive module.
• A sensor module that senses the front of the main body to detect moving objects between the target object and the main body.
• A tracking device for following a moving target object, comprising a drive module that moves the main body.

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This invention was developed with the support of the Ministry of Science and ICT's Real-time Indoor Wide-area Positioning Technology Development project.