Bridge Acceleration Sensor for Vehicle Weight and Position
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Solution Overview
Problem
Existing bridge monitoring systems require a large number of sensors, leading to increased complexity and cost in installation and data processing, making them labor-intensive and inefficient.
Innovation Solution
A measuring device utilizing a single acceleration sensor installed at the central portion of a bridge to acquire width direction acceleration data, allowing for the determination of moving object information such as position and weight using a small-scale and simple system configuration, with additional units for filtering, displacement calculation, and image analysis to enhance accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a large number of various types of sensors are used for speed detection, wheel axle detection, vehicle position detection, and weight measurement, then the measurement precision and reliability are improved, but the device complexity and installation cost increase significantly
Solution Approach 1:
The patent applies multi-functionality by using a single acceleration sensor to perform multiple measurement functions simultaneously. The acceleration sensor detects both vertical acceleration (for weight measurement) and horizontal acceleration (for speed and position detection), replacing what would traditionally require multiple specialized sensors. This universal approach maintains measurement precision while dramatically reducing device complexity
Solution Approach 2:
The patent merges multiple measurement functions into a single sensor system. By combining speed detection, position detection, and weight measurement capabilities into one acceleration sensor, the system eliminates the need for separate sensors for each function. This merging approach reduces the overall number of components and simplifies the measurement system architecture
2Reliability
If a large number of sensors are deployed for comprehensive vehicle monitoring, then the reliability of data collection is improved, but the processing load and computational complexity increase
Solution Approach 1:
The patent extracts and processes only the essential data from the acceleration sensor outputs. By focusing on key parameters such as vertical acceleration for weight and horizontal acceleration for speed/position, the system avoids processing unnecessary data from multiple sensors. This selective data extraction maintains measurement reliability while reducing computational burden
Solution Approach 2:
The patent replaces complex mechanical sensor systems with a simplified computational approach. Instead of using multiple physical sensors to directly measure different parameters, the system uses a single acceleration sensor combined with signal processing and calculation algorithms to derive speed, position, and weight information, thereby reducing processing complexity
3Measurement precision
If multiple specialized sensors are used for different measurement parameters, then the measurement precision for each parameter is improved, but the installation labor and maintenance cost increase
Solution Approach 1:
The patent employs a universal acceleration sensor that can measure multiple physical quantities (vertical acceleration for weight, horizontal acceleration for speed and position). This single multi-functional device replaces what would traditionally require several specialized sensors, significantly reducing installation labor and maintenance costs while preserving measurement precision through appropriate signal processing
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
Enables accurate and efficient acquisition of moving object information, such as position and weight, using a simplified system configuration, reducing labor and cost while improving data processing efficiency.
Implementation Method 1
the width direction acceleration may be a gravity component to be detected due to an inclination of the road surface
Data Source
AI summary
A measuring device includes a data acquisition unit that acquires measurement data, including width direction acceleration of a road surface on which a moving object moves, from an acceleration sensor provided on a structure having the road surface, and a moving object information acquisition unit that acquires information relating to the moving object moving on the road surface, on the basis of the width direction acceleration.