Radio Wave Sensor Coordinate Mapping for Road Detection Areas
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Solution Overview
Problem
Existing methods for setting detection areas in radio wave sensors require significant effort and time due to the need to move a reference object to multiple positions and acquire redundant detection data, leading to inefficiencies.
Innovation Solution
A method that involves acquiring coordinate values in a latitude-longitude system and transforming them into a unique coordinate system used by the radio wave sensor, allowing for the detection area to be set without the sensor, using a setting device to generate a transformation equation based on specific points and definition points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a reference object is moved to multiple positions to set detection areas, then detection area setting accuracy is improved, but the time and effort required for setting increases significantly
Solution Approach 1:
The patent uses coordinate information from a map (external data source) to create a virtual model of the detection area, eliminating the need to physically move reference objects to multiple positions. The map data serves as a copy or representation of the actual geographic space, allowing setting work to be performed on the virtual model rather than in the physical environment.
Solution Approach 2:
The patent replaces the mechanical process of physically moving reference objects and performing field measurements with an information processing approach using coordinate transformation algorithms. Instead of mechanical field work, the system uses computational methods to transform map coordinates into sensor coordinate system coordinates, automatically calculating detection area positions without physical intervention.
2Reliability
If redundant detection data is acquired to ensure accurate detection area setting, then measurement reliability is improved, but productivity decreases due to repeated measurements
Solution Approach 1:
The patent performs preliminary actions by acquiring and storing coordinate information of the detection area from a map before the actual sensor setting process. This preliminary data preparation includes obtaining latitude/longitude coordinates and any necessary transformation parameters, so that when setting is required, the work can proceed directly with data processing rather than requiring new field measurements.
Solution Approach 2:
The patent introduces coordinate transformation as an intermediary process between map data and sensor settings. Rather than directly measuring in the field or relying on repeated detection data acquisition, the transformation process serves as a mediator that converts geographic coordinate systems into sensor-specific coordinate systems, ensuring reliability through mathematical precision while maintaining productivity.
3Measurement precision
If coordinate transformation is performed using multiple definition points, then transformation accuracy is improved, but the complexity of the setting process increases
Solution Approach 1:
The patent implements self-service through automated coordinate transformation processes. The system automatically performs the transformation from map coordinate systems to sensor coordinate systems using pre-acquired coordinate information, eliminating the need for manual calculation or complex manual configuration by operators. The transformation algorithm handles the complexity internally while presenting a simplified interface to the user.
Data Source
AI summary
A radio wave sensor setting method for setting, in a radio wave sensor, a detection area determined on a road includes: acquiring coordinate values, in a latitude-longitude coordinate system, of each of a plurality of definition points that define the detection area; transforming the coordinate values of each of the plurality of definition points in the latitude-longitude coordinate system, to coordinate values in a unique coordinate system that is used in the radio wave sensor; and setting the detection area in the radio wave sensor, based on the coordinate values of each of the plurality of definition points in the unique coordinate system.


