Dumbbell assembly and motion parameter detection device and method applied to fitness dumbbell

Abstract

The invention relates to the field of fitness equipment, and provides a dumbbell assembly and a motion parameter detection device and method applied to a fitness dumbbell. The motion parameter detection device comprises a base body, a movable part and a magnetic sensor; the extension direction of a handle of the fitness dumbbell is the first direction, the base body is provided with a preset area with the normal in the first direction, the movable part is in sliding fit with the preset area, and the movable part is arranged to be capable of conducting two-dimensional sliding in the range of the preset area without being limited; the movable part is provided with a magnet, and the magnetic sensor is fixedly arranged on the base body and used for detecting the relative movement of the magnetic sensor and the magnet. The dumbbell movement frequency can be detected according to the sliding frequency of the movable part relative to the magnetic sensor, other parts do not need to be adopted to connect the movable part with the base body, the structure of the movement parameter detection device is simple, the matching installation difficulty of the movable part and the base body is reduced, and the movement parameter detection efficiency is improved. And the sliding flexibility of the movable part is improved, and the accuracy of a detection result is improved.

Description

technical field [0001] The invention relates to the field of fitness equipment, in particular to a dumbbell assembly, a motion parameter detection device and method for fitness dumbbells. Background technique [0002] CN103933722A discloses a fitness dumbbell motion parameter detection device and a fitness dumbbell motion detection method. The solution adopts a magnetic field sensor module to sense the geomagnetic field, and calculates the dumbbell posture, position, and dumbbell exercise through the measurement values ​​of the inertial sensor module and the magnetic field sensor module. times, calories burned, exercise scores, etc. [0003] However, on the one hand, due to the weak strength of the geomagnetic field, the detection of the geomagnetic field requires a high detection accuracy for the magnetic field sensor module, and the detection results are easily disturbed by external magnetic fields. The directions are different, so the error of calculating the posture and...

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Problems solved by technology

[0003] However, on the one hand, due to the weak strength of the earth’s magnetic field, the detection of the earth’s magnetic field requires high detection accuracy of the magnetic field sensor module, and the detection results are easily disturbed by the external magnetic field; on the other hand, due to the magnetic field strength / There are differences in directions, so the method of calculating the posture and position of the dumbbell based on the detected geomagnetic field has a large error

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