Tire Testing Apparatus Plate Sensor Synchronization
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Solution Overview
Problem
Conventional tire testing apparatuses cannot accurately determine when a tire passes over sensor units and struggle with precise measurement due to the need for additional sensors and complex synchronization processes, leading to rough and imprecise load measurements.
Innovation Solution
The apparatus features ground-contact-force sensors fixed to a plate that the tire rides on, allowing for precise tracking of the tire's passage and simplifying the synchronization of measurement signals, enabling accurate and efficient data collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If sensor units are buried directly in the road surface, then the structure is simple, but it is impossible to know when the tire passes over the sensor units, resulting in rough measurement
Solution Approach 1:
A plate is introduced as an intermediary component between the road surface and the ground-contact-force sensor. The plate transmits the load from the tire to the sensor while enabling precise timing detection through its interaction with the tire, thereby resolving the contradiction between structural simplicity and measurement accuracy.
Solution Approach 2:
The plate is positioned and configured in advance before the tire passes, creating a predetermined interaction zone. This preliminary arrangement ensures that the tire will apply load to the plate at a specific moment, enabling accurate timing detection without complex additional sensors.
2Measurement precision
If additional sensors such as laser sensors or touch sensors are provided to obtain tire position and speed information, then timing information can be obtained, but additional operations such as synchronization and accurate calculation of positional relations are required, increasing device complexity
Solution Approach 1:
The plate serves as a mechanical intermediary that automatically provides timing information through the moment the tire applies load to it. This eliminates the need for additional sensors and the complex synchronization operations they would require, while still achieving accurate timing detection.
Solution Approach 2:
The plate-tire interaction itself generates the timing signal without requiring external sensing systems. The system uses the natural mechanical interaction between the tire and plate to provide the necessary timing information, making the system self-sufficient and avoiding additional complexity.
3Measurement precision
If additional sensors are provided to track tire passage, then timing information can be obtained, but accurate calculation of positional relations between additional sensors and sensor units is required, otherwise measurement precision decreases
Solution Approach 1:
The plate acts as a fixed intermediary with a known positional relationship to the ground-contact-force sensor. By using the plate as the reference element rather than trying to calculate positions between multiple sensors, the system eliminates complex positional calculations while maintaining accurate position tracking.
4Measurement precision
If ground-contact-force sensors are fixed to the plate, then positional relation between plate sensor and ground-contact-force sensor is fixed, but the plate structure becomes more complex
Solution Approach 1:
The ground-contact-force sensor is merged with the plate structure by fixing it directly to the plate. This integration ensures a fixed positional relationship between the plate sensor and the ground-contact-force sensor, improving synchronization accuracy while the plate itself serves as the mounting structure.
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
This configuration allows for highly accurate load measurements by tracking the tire's passage and positioning, reducing sampling intervals and increasing data precision, and facilitates easy installation and synchronization of sensors.
Implementation Method 1
a plate sensor 16, which measures a load of the plate 14
Implementation Method 2
at least one ground-contact-force sensor 18, which measures a load which the tire 12 receives from a road surface 22
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
Provided is a tire testing apparatus capable of accurately and easily measuring a load which a tire receives from a road surface. The tire testing apparatus (10) includes a plate buried in a road surface (22) with which a tire (12) is in contact, at least one ground-contact-force sensor measuring a ground-contact force during a contact of the tire (12), and at least one plate sensor (16) measuring a load applied to the plate (14). According to the tire testing device (10), a ground-contact force of the tire (12) can be measured by the ground-contact-force sensor (18) and a load which the tire (12) applies to the plate (14) can be measured by the plate sensor (16).