Universal Electronic Hubodometer Using Single Accelerometer
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Solution Overview
Problem
Current hubodometers, both mechanical and electronic, face inaccuracies in measuring distance traveled due to sudden braking or driving on rough roads, and electronic systems are complex and costly with inadequate wireless communication capabilities.
Innovation Solution
A universal electronic hubodometer system featuring a single accelerometer sensor, microcontroller unit, communication module, and power supply configured on a printed circuit board, which wirelessly transmits data to mobile devices, allowing accurate monitoring and processing of rotation data regardless of tire size and providing efficient communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a mechanical hubodometer with a weighted mechanism is used to sense wheel rotation, then the device can determine distance traveled through relative motion, but the weighted mechanism rotates along with the wheel during sudden braking or acceleration on rough roads, eliminating relative motion and causing inaccurate data
Solution Approach 1:
The patent replaces the mechanical weighted mechanism with an electronic accelerometer sensor system. The accelerometer electronically detects wheel rotation and generates signals that are processed by a microcontroller to calculate distance traveled, eliminating the mechanical relative motion requirement and the problems associated with weighted mechanisms rotating during sudden braking or acceleration.
Solution Approach 2:
The patent changes the measurement parameter from mechanical displacement to electrical signal detection. The accelerometer measures acceleration forces and the microcontroller integrates these signals to determine velocity and position, transforming the measurement approach from direct mechanical reading to electronic parameter integration, which remains accurate under dynamic driving conditions.
2Measurement precision
If multiple accelerometer sensors are used to evaluate wheel rotation and distance traveled, then measurement accuracy can be improved, but the system becomes more complex and production costs increase
Solution Approach 1:
The patent makes the single accelerometer sensor perform multiple functions by strategically positioning it to detect various rotational characteristics. The same sensor evaluates wheel rotation speed, calculates distance traveled, and determines velocity, eliminating the need for multiple specialized sensors and reducing overall system complexity while maintaining measurement accuracy.
Solution Approach 2:
The patent processes the accelerometer signal through mathematical integration and differentiation to extract multiple parameters (velocity, position, acceleration) from a single sensor source. This parameter transformation approach allows one sensor to provide the functionality of multiple sensors, reducing system complexity while maintaining comprehensive measurement capabilities.
3Measurement precision
If a mechanical hubodometer with a fixed transmission ratio geared mechanism is used, then the device can determine distance traveled, but the fixed transmission ratio requires operators to utilize various hubodometers for differently sized tires, reducing versatility
Solution Approach 1:
The patent replaces the fixed mechanical transmission ratio with a dynamic electronic calculation system. The microcontroller adapts the distance calculation algorithm based on input parameters such as tire size, vehicle speed, and rotation rate, allowing the same device to accurately measure distance for different tire sizes without requiring physical reconfiguration or changing components.
Solution Approach 2:
The patent changes the transmission ratio from a fixed mechanical parameter to a variable electronic parameter. The system calculates effective transmission ratio dynamically based on real-time sensor data and configured tire specifications, enabling universal applicability across different vehicle and tire configurations while maintaining measurement precision.
4Measurement precision
If an electronic hubodometer with multiple accelerometer sensors is used, then rotation data can be evaluated, but battery power consumption increases over time
Solution Approach 1:
The patent enables the single accelerometer to perform multiple measurement functions (rotation detection, velocity calculation, distance measurement) through electronic signal processing, eliminating the need for multiple sensors that would each consume power. This multi-functional approach maintains measurement accuracy while significantly reducing overall power consumption compared to multi-sensor systems.
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
The system provides accurate and efficient monitoring of rotation data, reducing production costs and internal wear, while enabling wireless communication of essential information to operators, thus addressing the limitations of existing technologies.
Implementation Method 1
an accelerometer comprising a single accelerometer sensor for measuring force in any given direction
Data Source
AI summary
A universal electronic hubodometer with a single sensor system and method capable of electronically monitoring and/or processing the rotations of an object (e.g., a hubcap, wheel-hub, wheel, or tire) and wirelessly communicating any measured data to a mobile device (e.g., a mobile phone, PDA, cell phone, smartphone, or tablet). In one embodiment the universal electronic hubodometer may be capable of electronically determining the revolutions of an object using a single accelerometer while managing to overcome the problems of current hubodometers.