Vehicle-Mounted Light Triangulation for Roadside Lamp Mapping
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Solution Overview
Problem
Existing methods for detecting and mapping street lamps on roads are time-consuming, require manual intervention, and lack the ability to detect vegetation growth or lamp malfunctions without installing sensors in each lamp, limiting their applicability and efficiency.
Innovation Solution
A system comprising a detecting device installed on a ground vehicle with light meters and GPS, capable of triangulating light sources from both sides of the road to map lamp positions, measure light emission, and detect faults or vegetation growth without needing sensors in each lamp.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If light detection is performed only at the center of the road, then the device complexity is low, but the measurement precision of road surface conditions is insufficient
Solution Approach 1:
The patent divides the road surface detection into multiple segments by placing light sources at the center and both sides of the road, with corresponding light receivers positioned to detect reflected light from different road sections. This segmentation enables comprehensive detection of road surface conditions including puddles, ice, and snow across the entire road width, resolving the contradiction between measurement precision and device complexity.
2Measurement precision
If multiple light receivers are positioned at different heights and locations, then the measurement precision improves, but the device complexity increases
Solution Approach 1:
The patent applies local quality by positioning light receivers at specific locations (center and both sides of the road) and at different heights above the road surface. Each receiver is strategically placed to detect light reflected from specific road areas, enabling precise detection of local road conditions such as puddles, ice, or snow in different zones, thereby improving measurement precision while managing device complexity through targeted positioning.
3Measurement precision
If outer light points are added to the sides of the road, then the measurement precision of road surface conditions improves, but the loss of energy increases
Solution Approach 1:
The patent implements feedback by having light receivers detect the intensity and characteristics of light reflected from the road surface and transmit this information to a server. The server analyzes the reflected light data to determine road surface conditions (puddles, ice, snow) and can send control signals back to adjust light emission or receiver sensitivity, optimizing energy consumption while maintaining high measurement precision through intelligent control.
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 rapid mapping of up to 700 lamp posts per hour with precise positioning and fault detection, including vegetation growth, without requiring sensors in each lamp, and provides detailed lighting and air quality mapping.
Implementation Method 1
a light receiver (122) positioned at a second location along the longitudinal axis of the vehicle. The light receiver (122) is configured to detect light emitted by the light emitter (120)
Data Source
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AI summary
The present invention relates to a system (1) for detecting light emitted by one or more outer light points (P) positioned on a road, the system comprises: - a detecting device (2) installed on a ground vehicle configured to detect the light coming from two different sides of the road travelled by said ground vehicle, said detecting device (2) comprising at least two light meters (6, 7) positioned parallel to the road surface; - a processing unit configured to process data relating to said one or more light points (P) on the basis of parameters detected by said detecting device (2) by triangulation between the advancement movement of the ground vehicle and the values measured by the light meters (6, 7); - an electric power supply source configured to power the various elements of the detecting device (2).