System and method for mapping and calibrating training javelins

Abstract

The invention provides a system and a method for mapping and calibrating training javelins. The system comprises mapping instruments and a mapping and calibrating mechanism. Each mapping instrument comprises a CPU (central processing unit), a battery, a six-axis movement sensor, a calibrating button and the like, each battery is connected with the corresponding CPU and is powered by the CPU, each CPU is connected with the corresponding six-axis movement sensor, and calibrating keys which are matched with the mapping instruments are arranged on javelin bodies; the mapping and calibrating mechanism comprises a tilt angle sensor and a calibrating device support, the javelin bodies are arranged on the calibrating device support, level adjusting bolts are arranged at the bottom of the calibrating device support, a parallel plate is arranged on the top of the calibrating device support, and the tilt angle sensor is mounted on the parallel plate. The system and the method have the advantages that movement tracks and parameters capable of affecting throwing distances can be accurately and reliably acquired in real time, accordingly, training effects can be improved, and the system and the method have excellent actual use and popularization value.

Description

technical field [0001] The invention relates to the field of surveying and mapping of a javelin motion track and calibration of a surveying instrument, in particular to a javelin surveying and mapping, calibration system and a surveying and mapping method in teaching and training. Background technique [0002] The javelin sport is a relatively complex multi-axis rotation event. Its complete technical process is to obtain momentum by holding the gun on the shoulder through a pre-run-up connection with the throwing step, and then act on the longitudinal axis of the javelin through an explosive final force. The javelin was thrown from the shoulder. The throwing distance of the javelin depends on many factors, such as the shooting angle, speed, acceleration, initial pitch angular velocity and many other factors. However, there is currently no similar javelin motion mapping tool on the market. At present, most of the training for this sport is based on manual demonstration and i...

AI Technical Summary

Problems solved by technology

Such a plan has a certain guiding significance for the training of javelins, but due to the high cost of equipment, many unmeasurable factors at the shooting site, the need for calibration and correction, and the high requirements for the technical level of the users, it is currently used in daily training, competitions and competitions. This scheme is rarely used in program broadcasts

The inclination sensor can accurately measure the inclination angle of the object, but the javelin movement is a relatively complex multi-axis rotation project. Due to the rotation during the javelin movement, the reference coordinate system changes, and the angle measured by the inclination sensor is no longer the inclination angle of the javelin.

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