Safe Lock Actuation Control Using Infrared Detection

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Solution Overview

Problem

Hotel safes often remain locked after guests check out, preventing the next guest from using them, either due to accidental or deliberate locking, leading to cumbersome hotel operations.

Innovation Solution

A safe with a lock actuator and control system that uses a transmitter, receiver, and processor to determine if items are inside using infrared light, preventing the safe from locking when empty and sending notifications to mobile devices or room management systems during checkout times.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the safe allows locking by guests using PIN or biometrics, then guest security and privacy are improved, but the safe may be left locked after checkout preventing next guest from using it

Engineering Contradiction:
Improveguest securityVSAvoidsafe availability
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The system continuously monitors the safe's locked state and sends notifications to hotel staff when the safe remains locked after checkout time. This feedback mechanism allows the system to detect and respond to the problem of safes being left locked, enabling timely intervention to restore safe availability for next guests.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The safe automatically detects when it is in a locked state and sends notifications without requiring staff to manually check each safe. The system serves itself by autonomously monitoring its own state and alerting relevant personnel, reducing the need for manual intervention while maintaining safe availability.

Inventive Principle:
Principle #25Self-service

2Reliability

If the safe clears passwords after unlocking, then security is improved by preventing unauthorized access, but guests may accidentally lock the safe with items inside

Engineering Contradiction:
ImprovesecurityVSAvoidhotel staff intervention time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system proactively sends notifications to hotel staff when the safe is detected to be locked after checkout, before the next guest arrives. This preliminary action allows staff to address the issue in advance, preventing loss of time when the next guest needs the safe and avoiding the need for urgent intervention.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The notification system provides feedback to hotel staff about safes that remain locked after checkout. This feedback loop enables staff to efficiently identify and resolve issues, reducing the overall time lost to manual intervention while maintaining security protocols.

Inventive Principle:
Principle #23Feedback

3Ease of operation

If hotel staff manually check and open locked safes, then safe availability is restored, but operational efficiency decreases due to cumbersome processes

Engineering Contradiction:
Improvesafe availabilityVSAvoidhotel operation efficiency
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The safe system automatically monitors its own locked state and sends notifications to hotel staff, eliminating the need for staff to manually check each safe. This self-service approach significantly improves operational efficiency by reducing repetitive manual tasks while ensuring safe availability is maintained.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The automated notification system provides real-time feedback to hotel staff about which safes need attention, allowing staff to focus their efforts only on problematic safes rather than checking all safes manually. This feedback mechanism restores safe availability efficiently while maintaining high operational productivity.

Inventive Principle:
Principle #23Feedback

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Ensures the safe is available for the next guest without hotel staff intervention by preventing accidental or deliberate locking when items are not present, streamlining hotel operations.

Implementation Method 1

The transmitter is configured to emit a light into the safe. The receiver is configured to receive the light emitted from the transmitter and generate an output signal.

Methodology Applied
Scientific EffectInfrared light emission and detection: Infrared Radiation

Implementation Method 2

at least one reflector configured to reflect the light emitted from the transmitter toward the receiver

Methodology Applied
Scientific EffectLight reflection: Reflection

Data Source

PatentUS11939793B2Lock actuation control
Publication Date: 2024.03.26 HONEYWELL INTERNATIONAL INC
  • US11939793B2 patent drawing
  • US11939793B2 patent drawing
  • US11939793B2 patent drawing

AI summary

A safe including a lock actuator and a control system communicatively connected with the lock actuator, and a method for controlling a lock actuator of a safe are provided. The lock actuator is configured to lock or unlock a mechanical or electronic lock of the safe. The control system includes a transmitter, a receiver, and a processor. The transmitter is configured to emit light (ex. infrared light) into the safe. The receiver is configured to receive light, for example, the same infrared wave, emitted from the transmitter and generate an output signal. The processor is configured to receive the output signal from the receiver and determine whether item is inside the safe. The control system disables the lock actuator from locking the safe when the output signal indicates no item is inside the safe.