Smart Locker System with Thin-Parcel Detection Using Angled Placement

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Solution Overview

Problem

Existing smart lockers and dry cleaning lockers struggle to accurately detect the presence of thin packages or envelopes due to sensors that require a minimum thickness for detection, leading to errors like 'Empty Locker' or 'Ghost Delivery', as they cannot reliably determine the presence of items that are not thick enough to block electromagnetic waves.

Innovation Solution

The locker design incorporates emitters and receivers embedded in the side walls, ensuring thin parcels stand at an angle and block electromagnetic waves, with a controller determining presence based on receiver signals, preventing undetected parcels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional mailroom operations are used, then employees can receive packages, but security risks from unauthorized access and theft increase

Engineering Contradiction:
Improvepackage securityVSAvoidlocker system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The mailroom is segmented into multiple individual lockers, each assigned to specific employees. This segmentation isolates packages and eliminates the need for centralized mailroom access, thereby improving security while maintaining simplicity through modular individual units rather than a complex centralized system.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

An automated control system acts as an intermediary between package delivery and employee retrieval. The system manages locker access, tracks packages, and coordinates delivery without requiring physical mailroom access, thus enhancing security while keeping the system manageable through automation rather than complex manual procedures.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If automated locker systems are implemented, then delivery efficiency improves, but system complexity and cost increase

Engineering Contradiction:
Improvedelivery efficiencyVSAvoidautomation system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The locker system enables self-service functionality where employees independently retrieve their own packages using their employee ID or mobile device. This eliminates the need for manual mailroom staff intervention, improving delivery efficiency while keeping the automation simple through straightforward authentication and retrieval processes rather than complex automated handling mechanisms.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

Manual mechanical mailroom operations are replaced with an automated electronic control system that manages locker access and tracking. This substitution improves efficiency by eliminating manual processes while maintaining relative simplicity through software-based control rather than complex mechanical automation for physical package handling.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Ease of operation

If multiple lockers are deployed across different locations, then employee convenience improves, but system management complexity increases

Engineering Contradiction:
Improveemployee convenienceVSAvoiddistributed system management
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The control system is designed with universal functionality that can manage multiple lockers across different locations through a single unified platform. This allows employees to access lockers at various locations conveniently while the system manages all locations through standardized procedures, improving ease of operation without proportionally increasing management complexity through replication.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system incorporates tracking and notification features that provide real-time feedback on package delivery status and locker availability. This feedback mechanism simplifies management of distributed lockers by providing centralized visibility and automated notifications, reducing the complexity of managing multiple locations through information flow rather than increased operational overhead.

Inventive Principle:
Principle #23Feedback

Data Source

PatentEP3756030B1Smart locker system and methods for use thereof
Publication Date: 2026.05.06 RAZZOLI DONNA SARA
  • EP3756030B1 patent drawingFigure 1
  • EP3756030B1 patent drawingFigure 2
  • EP3756030B1 patent drawingFigure 3~4a

AI summary

A system of lockers includes at least two groups of lockers, a control unit, a user interface, a communication unit. Each group of lockers has lockers designated for a respective parcel type. The control unit communicates with the lockers and is configured to control an opening of each locker. The user interface is configured to receive from a delivery person input indicative an identification of the delivery person. The communication unit is configured to communicate the input from the user interface to a data center. The data center is configured to store a plurality of identifications of a plurality of delivery persons associated with one or more of the lockers, for comparing the input with the plurality of identifications, and for transmitting to the control unit a command to open one or more of the lockers associated with the identification input by the delivery person.