Road Surface Scanning for Real-Time Safe Vehicle Speed
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Solution Overview
Problem
Current technologies lack the capability to accurately monitor road surface conditions in real-time, hindering the development and implementation of safe driving control methods for intelligent and unmanned vehicles.
Innovation Solution
An intelligent safe vehicle speed measurement system comprising a power supply unit, laser scanning unit, skid resistance prediction unit, and wireless communication unit, which scans the road surface, performs stress simulation, and provides real-time safe operating parameters to vehicles through a warning reminder system, considering environmental factors and vehicle information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If real-time road surface monitoring is implemented, then measurement precision of road conditions is improved, but device complexity increases
Solution Approach 1:
The system divides road surface monitoring into multiple independent measurement dimensions including texture depth, skid resistance coefficient, and environmental parameters. Each parameter is measured by dedicated sensors that independently contribute to the overall road condition assessment, allowing modular system design and reduced complexity.
Solution Approach 2:
A portable testing device serves as an intermediary between the road surface and the monitoring system. This device integrates multiple sensors and measurement functions into a single mobile unit that can be deployed at different locations, simplifying the overall system architecture while maintaining comprehensive measurement capabilities.
2Reliability
If multiple environmental parameters are measured, then reliability of safe speed calculation is improved, but loss of time in data collection increases
Solution Approach 1:
Environmental parameters such as temperature, humidity, and road texture characteristics are pre-measured and stored in the system database before actual vehicle operation. When a vehicle approaches, the system retrieves pre-collected data and combines it with real-time sensor readings, significantly reducing the time required for comprehensive road condition assessment while maintaining calculation reliability.
Solution Approach 2:
The monitoring system operates continuously to collect and update road surface parameters, maintaining a current database of environmental conditions. This continuous measurement approach ensures that when safe speed calculations are needed, the system already has up-to-date information, eliminating the need for time-consuming data collection at the moment of calculation.
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
Enhances the interaction between vehicles and road surfaces, providing accurate and reliable real-time data for safe operation, improving the safety and efficiency of intelligent driving systems and promoting the application of unmanned driving technologies.
Implementation Method 1
a laser scanning unit, configured to scan the road surface to obtain a texture of the road surface
Implementation Method 2
the thermoelectric power generator includes heat conducting plates and a thermoelectric power generating sheet; the heat conducting plates are configured to transmit a high temperature of the road surface and a low temperature of a subgrade soil to two ends of the thermoelectric power generating sheet, respectively, to generate electricity
Implementation Method 3
the pressure power generator includes an encapsulation material and piezoelectric ceramic sheets that are arranged under the wheel track bands, and the encapsulation material is wrapped on an outer side of the piezoelectric ceramic sheets, and the piezoelectric ceramic sheets are configured to deform under an action of a load thereon to generate electricity
Data Source
AI summary
Provided is an intelligent safe vehicle speed measurement method and an system capable of considering a state of a road surface, including: a laser scanning unit configured to obtain road surface textures and simulate contact under different vehicle loads and tire patterns; a wireless communication unit configured to obtain the model, load and tire information of incoming vehicles, offer a best-matching braking distance by search through database; a skid resistance prediction unit configured to obtain environmental parameters to correct the obtained best-matching braking distance, and offer a safe speed for incoming vehicles; and a warning reminder unit configured to broadcast the safe running speed to incoming vehicles. This system communicates between the vehicle and road, obtains the information from incoming vehicles in real time, and broadcasts the safe speed to incoming vehicles, ensuring the safety of the incoming vehicle during running.