Automated Loading Dock Control for Precise Trailer Alignment

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Solution Overview

Problem

Current warehouse operations face inefficiencies and increased labor costs due to manual processes in aligning trailers at docking stations, which can lead to misalignment, human error, and damage to equipment.

Innovation Solution

A dock equipment control system that includes vehicle detection sensors, exterior positioning systems, trailer restraint systems, interior clearance sensors, and a control unit to automate the alignment and preparation of trailers for loading and unloading, reducing the need for manual intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If manual processes are used to align trailers at docking stations, then labor flexibility is maintained, but alignment precision and operational efficiency deteriorate

Engineering Contradiction:

Improvetrailer alignment precisionVSAvoiddocking system complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent replaces manual mechanical alignment processes with an automated optical sensing system. Sensors detect trailer position and provide real-time feedback to the control system, which automatically adjusts docking equipment. This substitution of mechanical/manual operations with automated sensing and control resolves the contradiction by achieving precise alignment without proportionally increasing system complexity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The docking system performs self-alignment through automated sensor feedback and control mechanisms. The system monitors its own state and automatically corrects positioning errors without requiring external manual intervention. This self-service capability improves alignment precision while keeping the control system relatively simple through autonomous operation.

Inventive Principle:

Principle #25Self-service

2Productivity

If manual alignment verification is performed by warehouse individuals, then alignment accuracy can be confirmed, but operational time and labor costs increase

Engineering Contradiction:

Improvedocking operation speedVSAvoidtime for alignment verification

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The sensor system continuously monitors trailer alignment throughout the docking process, providing real-time feedback rather than requiring intermittent manual checks. This continuous automated verification eliminates downtime for manual inspection while maintaining alignment accuracy, thereby increasing productivity without time loss.

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

The system implements automated feedback loops where sensors detect alignment status and immediately communicate with the control system. This real-time feedback enables continuous correction and verification of trailer position without interrupting operations, resolving the contradiction between productivity and verification time.

Inventive Principle:

Principle #23Feedback

3Reliability

If multiple individuals are involved in the docking process, then task coverage is improved, but coordination complexity and communication overhead increase

Engineering Contradiction:

Improvedocking process reliabilityVSAvoidcoordination system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The automated system performs verification and coordination tasks that previously required multiple human workers. The sensor system and controller work together autonomously to monitor alignment, verify positioning, and control docking equipment, maintaining reliability while eliminating the need for complex human coordination protocols.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The control system acts as an intermediary between the trailer, docking equipment, and warehouse operations. It centralizes coordination functions, processing sensor data and controlling equipment automatically, thereby reducing the complexity of inter-personnel communication while maintaining process reliability.

Inventive Principle:

Principle #24Intermediary (Mediator)

4Loss of information

If visual signals are used to communicate docking status, then information transmission is simple, but real-time accuracy and response speed are limited

Engineering Contradiction:

Improvealignment information accuracyVSAvoidcommunication system complexity

Core Design Contradiction:

Loss of informationVSDevice complexity

Solution Approach 1:

The system replaces simple visual signal communication with automated electronic sensing and digital feedback. Sensors provide precise numerical data about trailer position and alignment status directly to the control system, eliminating the information loss inherent in visual estimation while keeping the communication architecture relatively simple through direct digital interfaces.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS20250162826A1Systems and methods for automatically controlling loading dock equipment

Publication Date: 2025.05.22 ASSA ABLOY ENTRANCE SYST AB

AI summary

Systems and methods for automatically controlling loading dock equipment, such as in response to a trailer approaching and docking at a docking station, are disclosed. The systems and methods can provide scanning devices and scanning operations which assist with, for example, properly aligning a trailer at a docking station and/or checking an interior area in front of the dock door for obstructions. The systems and methods can also transmit messages between components of the system and/or to users of the system regarding the status of components of the systems and/or the status of the overall docking process.