Automatic Wagon List via Sensor Mesh Network

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Solution Overview

Problem

Current methods for generating a list of units in a train, such as freight wagons, are manual, time-consuming, and error-prone, requiring personnel to walk alongside the train and rely on visual identification, which is inefficient and unreliable, especially when train composition changes.

Innovation Solution

A system comprising sensors mounted on each train unit that detect parameters suitable for determining unit positions and communicate through a sensor mesh network to a control device, which processes the data to automatically generate a list of units, eliminating the need for manual inspection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If manual identification methods are used, then personnel can identify units by walking alongside the train, but the process is time-consuming and labor-intensive

Engineering Contradiction:

Improveidentification accuracyVSAvoidtime for list generation

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent replaces the mechanical manual inspection system with an automated sensor-based detection system. Sensors mounted on train units automatically detect parameters (such as position, identification markers) and transmit data via communication modules to a control device, eliminating the need for personnel to physically walk alongside the train while maintaining accurate identification.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The train units themselves perform the identification function through equipped sensors and communication modules. Each unit autonomously detects its own parameters and communicates with other units to automatically generate the unit list, making the system self-sufficient without requiring external manual intervention.

Inventive Principle:

Principle #25Self-service

2Reliability

If manual identification is performed, then personnel can verify unit positions, but errors occur due to human skill limitations

Engineering Contradiction:

Improveidentification reliabilityVSAvoidtime for error correction

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent replaces human-based identification with automated sensor detection and data processing. Sensors objectively detect unit parameters and communication modules transmit this data to a control device that automatically generates the unit list, eliminating human error while providing consistent and reliable identification results.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system incorporates feedback mechanisms where sensors continuously monitor unit parameters and communicate status information through the communication modules to the control device, enabling real-time verification and automatic correction of any detection issues without manual intervention.

Inventive Principle:

Principle #23Feedback

3Adaptability or versatility

If manual list generation is used, then personnel can create unit lists for brake testing, but the process cannot be performed when the train is in operation

Engineering Contradiction:

Improveoperational flexibilityVSAvoidtime for list generation

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent enables the train system to perform self-identification and list generation autonomously while in operation. Sensors mounted on each unit continuously detect parameters and communicate with the control device, allowing the system to generate unit lists without requiring the train to be stationary or requiring personnel intervention, thus providing operational flexibility.

Inventive Principle:

Principle #25Self-service

4Adaptability or versatility

If train composition changes, then units can be added or removed based on freight, but repeated manual list generation causes significant delays

Engineering Contradiction:

Improvecomposition flexibilityVSAvoidlist generation efficiency

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent replaces manual list generation with an automated sensor-based detection system. Sensors mounted on train units automatically detect parameters (such as position, identification markers) and transmit data via communication modules to a control device, eliminating the need for personnel to physically walk alongside the train while maintaining accurate identification.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS20250074483A1Digital freight car - automatic wagon list

Publication Date: 2025.03.06 KNORR BREMSE SYST FUR SCHIENENFAHRZEUGE GMBH

AI summary

A system and method for automatic generation of a list of units in a train comprising multiple units use a plurality of sensors, wherein each of the plurality of sensors is configured to be mounted to a respective unit of the train and each of the plurality of sensors is configured to detect a parameter of the respective unit of the train to which it is mounted that is suitable to provide an information about the position of the unit with respect to another unit in the train. Further, the system includes a control device configured to receive the detected parameters from the plurality of sensors and to process the detected parameters for generation of the list of units.