Vehicle Locus Transmission Using Linear Coordinates to Cut Data Load
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Solution Overview
Problem
Current vehicle travel locus transmission systems and traffic control systems face challenges in reducing communication load, data processing load, and data storage requirements due to the large amount of positional data transmitted from multiple vehicles to traffic control apparatuses, leading to increased complexity and inefficiency.
Innovation Solution
A vehicle travel locus transmission system equipped with a GNSS receiver, vehicle-side transceiver, locator processor, wheel speed sensor, gyro sensor, and acceleration rate sensor that generates and transmits linear coordinates only when a predetermined angle threshold is exceeded, coupled with a traffic control apparatus that updates and matches these coordinates with road map data to reduce unnecessary data transmission and processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all positional data from multiple vehicles is transmitted to traffic control apparatus continuously, then the traffic control system can maintain complete awareness of vehicle locations, but the communication load, data processing load, and data storage requirements increase significantly
Solution Approach 1:
The patent extracts and transmits only the essential information (linear coordinate data representing significant positional changes) rather than all raw GNSS positional data. The locator processor identifies when a vehicle's position change exceeds a threshold and transmits only those significant events, filtering out redundant continuous positional updates while maintaining traffic control awareness.
Solution Approach 2:
Instead of transmitting complete positional data continuously, the system transmits partial data only when necessary (when positional change exceeds threshold). This partial action approach reduces communication load while providing sufficient information for traffic control purposes, transmitting exactly what is needed without excess.
2Speed
If continuous positional data transmission is implemented from all vehicles, then real-time traffic monitoring is achieved, but the data processing load and energy consumption increase
Solution Approach 1:
The system implements periodic transmission based on event triggers rather than continuous transmission. The locator processor continuously monitors positional changes but transmits data only periodically when a significant change occurs (exceeds threshold). This maintains real-time monitoring capability for critical events while reducing overall processing energy consumption by eliminating redundant processing of insignificant positional updates.
3Measurement precision
If detailed positional coordinates are transmitted frequently, then precise vehicle location tracking is maintained, but the amount of data storage required increases
Solution Approach 1:
The system extracts only the essential positional change information (linear coordinate representing displacement from previous position) rather than storing and transmitting complete coordinate sequences. By calculating and transmitting only the significant displacement vectors when thresholds are exceeded, the system maintains location precision for tracking while dramatically reducing the volume of data that needs to be stored and processed.
Data Source
AI summary
A vehicle travel locus transmission system to be mounted on a vehicle includes a GNSS receiver, a vehicle-side transceiver, a locator processor, a wheel speed sensor, a gyro sensor, and an acceleration rate sensor. The locator processor generates, on predetermined cycles, a latest first linear coordinate as a linear function parameter that couples latest first positional coordinates and second positional coordinates on a previous cycle. The first and second positional coordinates are to be acquired on the basis of a positioning signal received by the GNSS receiver. On the condition that an angle formed by the first linear coordinate with an extension of a second linear coordinate generated on the previous cycle exceeds a predetermined threshold, the locator processor sends data regarding the first linear coordinate together with vehicle identification data, from the vehicle-side transceiver to an external device.