Pre-load Zone Communication for Vehicle Trip Data
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Solution Overview
Problem
Existing vehicle systems face inefficiencies due to unreliable communication along routes, leading to incomplete or inaccurate trip data transmission, which can result in suboptimal vehicle movement and increased energy consumption.
Innovation Solution
The implementation of a pre-load zone with reliable communication along routes, allowing vehicles to send trip request messages and receive trip data before entering communication dead zones, enabling efficient data storage and movement control based on timely and accurate trip data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If trip data is transmitted remotely from an off-board system to the vehicle, then the vehicle can receive trip information for generating a trip plan, but the likelihood of transmission errors increases and the vehicle may not receive complete information
Solution Approach 1:
The system transmits trip data to the vehicle in advance before the vehicle enters a communication dead zone. The off-board system identifies upcoming dead zones and sends trip information while the vehicle is still in a communication reliable zone, ensuring the vehicle has complete trip data even when communication becomes unreliable.
Solution Approach 2:
The route is divided into communication reliable zones and communication dead zones. The system segments the trip data transmission to occur specifically in the reliable zones, allowing the vehicle to store complete trip information before entering dead zones where communication cannot occur.
2Duration of action of moving object
If the vehicle travels long distances along a route, then the trip duration increases, but the amount of input information required for trip planning increases and transmission errors become more likely
Solution Approach 1:
For long-distance trips, the system proactively transmits complete trip data at the beginning of the journey or before entering communication dead zones. This preliminary transmission ensures the vehicle has all necessary information for the entire long-distance trip, eliminating the need for subsequent transmissions that may fail.
Solution Approach 2:
The vehicle stores a complete copy of the trip data locally in its memory device. This local copy serves as a backup that the vehicle can rely on throughout the long trip, even when communication with the off-board system is unavailable or unreliable.
3Ease of operation
If the vehicle enters a communication dead zone, then the vehicle cannot receive new trip data, but the vehicle still needs to control movements based on accurate trip information
Solution Approach 1:
The system ensures trip data is transmitted and stored in the vehicle's memory device before the vehicle enters the communication dead zone. This preliminary data loading enables the vehicle to continue controlling movements accurately throughout the dead zone without needing real-time communication.
Solution Approach 2:
The vehicle uses its locally stored trip data from memory to autonomously control its movements during communication dead zones. The vehicle serves itself by relying on previously received information rather than requiring continuous external communication support.
Data Source
AI summary
A method includes defining a pre-load zone that has reliable communication along a route. The pre-load zone is associated with a trip of a vehicle traveling along the route. A starting location of the trip is located outside of the pre-load zone. The vehicle is configured to enter the pre-load zone and exit the pre-load zone prior to reaching the starting location of the trip. The method includes receiving a trip request message that identifies the pre-load zone from the vehicle after the vehicle enters the pre-load zone and prior to the vehicle exiting the pre-load zone. The method also includes sending a trip response message to the vehicle that the vehicle receives prior to exiting the pre-load zone. The trip response message includes trip data specific to the trip that is selected based on the association between the pre-load zone and the trip.