Geomagnetic Motion Detection for Remote Exercise Equipment Tracking
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Solution Overview
Problem
Existing motion detection technologies fail to recognize user movement when the device is not worn on the body part or is separated from the user, and additional sensors increase costs.
Innovation Solution
A motion detection device using Earth's magnetic field that includes a geomagnetic field sensor, processor, and memory to identify geomagnetic field data, allowing recognition of user movement even when the device is not worn or separated, by identifying exercise equipment through geomagnetic field interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional sensors are attached to exercise equipment to detect movement, then movement recognition capability is improved, but device cost increases
Solution Approach 1:
The patent applies multi-functionality by enabling the motion detection device to serve dual purposes: traditional body-worn movement detection and remote exercise equipment detection. The geomagnetic field sensor detects movements of exercise equipment (such as treadmills, ellipticals, and stationary bikes) without requiring additional sensors on the equipment itself, allowing one device to perform multiple detection functions across different scenarios
Solution Approach 2:
The patent implements self-service by utilizing the existing geomagnetic field sensor already present in the motion detection device to detect exercise equipment movements. Instead of requiring the exercise equipment to have its own sensors or additional components, the system leverages the sensor's inherent capability to detect magnetic field changes caused by moving ferromagnetic parts of the equipment, eliminating the need for extra hardware investments
2Reliability
If the device is worn on the body part to detect movement, then movement detection is achieved, but the device cannot detect movement when separated from the user
Solution Approach 1:
The patent replaces the mechanical/body-contact-based detection system with a magnetic field-based detection system. Instead of relying on physical contact or proximity to the user's body, the geomagnetic field sensor detects movements through magnetic field changes caused by ferromagnetic components of exercise equipment, enabling detection without mechanical connection or physical proximity to the user
3Stability of the object's composition
If the device is fixed at a location to avoid movement, then the device remains stationary, but it cannot detect user movement when apart from the user
Solution Approach 1:
The patent introduces the magnetic field as an intermediary medium between the stationary device and the moving exercise equipment. The geomagnetic field sensor detects changes in the magnetic field caused by moving ferromagnetic parts of the exercise equipment, allowing the device to remain fixed while still detecting movement through the intermediary magnetic field changes
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Recognizes user movement without additional costs by utilizing existing geomagnetic field sensors, enhancing user convenience by detecting exercise equipment movement even when the device is fixed or apart from the user.
Implementation Method 1
identify a 1st geomagnetic field data using the geomagnetic field sensor, based on that the motion detection device is not moving; identify that the 1st geomagnetic field data is generated from a 1st exercise equipment that is moving
Data Source
AI summary
Disclosed is a motion detection device and method using Earth's magnetic field. The motion detection device using the Earth's magnetic field comprises a geomagnetic field sensor, a processor, and a memory operatively connected to the processor, wherein the memory stores instructions and when executed, enable the processor: to identify a first geomagnetic field data using the geomagnetic field sensor, based on the motion detection device that is not moving; to identify that the first geomagnetic field data is generated from a first exercise equipment that is moving; and to identify at least one of a type of exercise and a number of times (e.g., reps, sets) of the exercise using the first exercise equipment based on the first geomagnetic field data