Wireless Train Course Control for Device Failure Sections
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Solution Overview
Problem
Conventional wireless train control systems face issues where trains are forced to stay between stations or in station premises due to failures in wireless devices or on-board devices, leading to operational inefficiencies and passenger inconvenience.
Innovation Solution
A course control device that acquires information from multiple wireless devices along the track and controls train courses to prevent trains from proceeding in cases of device failures or stationary preceding trains, ensuring they do not stay between stations or in station premises by adjusting departure and entry restrictions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ground device stops the following train in the section just before the section in which the preceding train is located due to wireless device or on-board device failure, then train safety is improved, but train operational efficiency deteriorates as multiple trains stay between stations
Solution Approach 1:
The control device applies different control strategies to different sections of the track. When a failure is detected, trains are stopped before the affected section rather than halting all trains system-wide. This localized approach maintains safety in the failed section while allowing other sections to operate normally, thus resolving the contradiction between safety and operational efficiency.
Solution Approach 2:
The control device dynamically adjusts train control based on real-time failure detection. When a wireless device or on-board device failure is detected, the control device activates restrictive control for affected sections. When failures are resolved, normal control resumes. This dynamic adaptation allows the system to maintain safety during failures while preserving operational efficiency during normal conditions.
2Reliability
If trains are stopped before the section with failed wireless or on-board devices, then trains avoid entering failed sections, but trains accumulate and stay between stations
Solution Approach 1:
The control device performs preliminary detection of wireless device and on-board device status before trains enter affected sections. By detecting failures in advance and proactively controlling trains to stop before entering failed sections, the system prevents trains from encountering failures rather than reacting after trains have already been impacted, thereby reducing unnecessary waiting time.
Solution Approach 2:
The control device continuously monitors the status of wireless devices and on-board devices and adjusts train control based on this feedback. When failures are detected, restrictive control is activated; when failures are resolved, normal control resumes. This feedback mechanism ensures trains are controlled only when necessary, minimizing waiting time while maintaining reliability.
3Reliability
If the control device prevents trains from entering sections with failed devices, then trains avoid safety risks, but trains may be forced to stay in station premises
Solution Approach 1:
The control device applies restrictive control only to specific sections where wireless device or on-board device failures are detected, rather than restricting all train movements system-wide. This localized approach maintains train movement flexibility in unaffected sections while ensuring safety in failed sections, resolving the contradiction between safety and operational flexibility.
Solution Approach 2:
The track is divided into multiple sections, each monitored by the control device for device failures. When a failure is detected in one section, only trains approaching that specific section are restricted, while trains in other sections continue normal operations. This segmentation allows the system to maintain safety in affected areas without compromising overall operational flexibility.
Data Source
AI summary
A course control device includes: an information acquisition unit to acquire information via any of wireless devices arranged along a track from a first station to a second station; and a course control unit to control the course of a course control target train based on the information acquired by the information acquisition unit. The course control unit prevents the course control target train from proceeding to the course in at least one of a case where at least one of the wireless devices is in a failure state, a case where an on-board device that is mounted in a preceding train preceding the course control target train on the track and controls the preceding train based on information acquired via the wireless devices is in a failure state, and a case where the preceding train is in a stationary state between the first station and the second station.