Vehicle Data Transmission Control for Wireless Dead Zones
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Solution Overview
Problem
Existing vehicle state monitoring systems face challenges in transmitting real-time information from moving bodies, such as railway vehicles, especially in areas where wireless communication is unreliable, leading to information omissions and delayed repairs.
Innovation Solution
An information transmission device that determines operation modes based on the vehicle's position and communication quality, assigning attributes to information and controlling transmission to ensure high real-time performance and reduce omissions by prioritizing new information over old when communication is possible.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If information is transmitted periodically by the in-vehicle communication device, then real-time monitoring performance is improved, but information omission occurs when the vehicle is located in a tunnel or mountainous area where wireless communication cannot be performed
Solution Approach 1:
The patent applies dynamics by making the transmission mode adjustable and adaptive rather than fixed. The system dynamically switches between first transmission mode (periodic transmission) and second transmission mode (event-driven transmission) based on operational conditions. This allows the system to optimize information transmission reliability by selecting the appropriate mode: periodic transmission for stable conditions and event-driven transmission for critical events or poor communication conditions, thereby reducing information omission.
Solution Approach 2:
The patent changes the transmission parameter (transmission mode) based on communication environment and event type. By adjusting the transmission mode parameter between two distinct modes, the system adapts to varying conditions: using periodic transmission when communication is reliable and event-driven transmission when immediate notification of critical events is needed, thus preventing information loss in different scenarios.
2Loss of information
If all collected information is transmitted continuously, then information completeness is improved, but communication efficiency and energy consumption deteriorate
Solution Approach 1:
The patent applies partial action by transmitting only necessary information rather than all collected information continuously. In the second transmission mode, the system selectively transmits information related to specific events (such as device failures, abnormal states, or maintenance alerts) while omitting routine or non-critical data. This partial transmission approach ensures information completeness for critical events while significantly reducing energy consumption and communication overhead compared to continuous full-information transmission.
Solution Approach 2:
The patent segments information transmission into different categories and modes. Information is divided into routine operational data (transmitted periodically in first mode) and event-driven data (transmitted immediately in second mode). This segmentation allows the system to prioritize energy-critical transmissions while maintaining overall information completeness, reducing unnecessary energy expenditure on transmitting non-urgent data.
3Stability of the object's composition
If periodic transmission is used, then communication stability is improved, but response time to critical events deteriorates
Solution Approach 1:
The patent uses periodic action in the first transmission mode where information is transmitted at regular intervals, providing communication stability and predictable bandwidth usage. However, the system complements this with a second transmission mode that triggers immediate transmission when specific events occur (device failures, abnormal states). This combination ensures that routine communications maintain stability while critical events receive immediate attention, resolving the response time issue without sacrificing overall communication stability.
Solution Approach 2:
The patent maintains continuous monitoring and readiness to transmit by operating in two concurrent modes. The periodic transmission ensures continuous baseline communication stability, while the event-driven mechanism ensures continuous readiness to respond to critical events immediately. This dual-mode continuous operation eliminates gaps in both stability and response capability, as the system is always either transmitting periodically or ready to transmit immediately upon event detection.
Data Source
AI summary
Information that was collected in time series in a moving body is delivered by wireless communication to a base station in a state in which real-time performance is high and omission of the information is reduced. An information transmission device installed in the moving body includes: a communication section; a position detection section; and a zone information storage section. An operation mode is periodically determined based on the current position and the zone information. When a first operation mode is determined, a predetermined attribute is assigned to new information. When a second operation mode is determined, new information and at least a part of information to which the attribute was assigned are transmitted to the base station. The attribute that had been assigned to the transmitted information among the information to which the attribute was assigned is removed.