Elevator Occupancy Detection for Robot Tailgating Prevention

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Solution Overview

Problem

Elevator control systems in facilities are vulnerable to autonomous mobile machine tailgating, allowing unauthorized individuals to gain access to restricted areas by following authorized robots or drones.

Innovation Solution

An elevator control system that includes sensors and processors to detect the presence of individuals in elevators with autonomous mobile machines, performing tailgate prevention operations to prevent unauthorized access by ensuring the individual exits at a different floor or authenticates before allowing the mobile machine to access restricted floors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If autonomous mobile machines are allowed to use elevator control systems to access restricted areas, then productivity and security functions are improved, but vulnerability to tailgating attacks increases

Engineering Contradiction:
ImprovesecurityVSAvoidtailgating vulnerability
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The elevator control system continuously monitors elevator car occupancy and communicates this information to the autonomous mobile machine. When the elevator arrives at the restricted floor, the system provides feedback about whether the autonomous machine is alone in the elevator car. Based on this feedback, the system either permits or denies access to the restricted floor, preventing tailgating attacks by unauthorized individuals who may have followed the autonomous machine into the elevator.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system performs preliminary verification of elevator occupancy status before granting access to the restricted floor. The elevator control system checks whether the autonomous mobile machine is the sole occupant of the elevator car before allowing the elevator doors to open at the restricted floor. This preliminary action prevents tailgating by ensuring that no unauthorized individuals are present to follow the autonomous machine through the access gate.

Inventive Principle:
Principle #10Preliminary action

2Ease of operation

If traditional elevator control systems are used without modifications, then ease of operation is maintained, but security against tailgating is compromised

Engineering Contradiction:
Improveelevator operationVSAvoidaccess control security
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The autonomous mobile machine autonomously monitors the elevator occupancy status and makes its own access decisions. The machine receives occupancy information from the elevator control system and independently determines whether to proceed with accessing the restricted floor or to wait for the elevator to empty. This self-service approach maintains ease of operation while enhancing security, as the autonomous machine itself is responsible for preventing tailgating.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS12606417B2Systems and methods for protecting robot tailgating in building environments
Publication Date: 2026.04.21 TYCO FIRE & SECURITY GMBH
  • US12606417B2 patent drawing
  • US12606417B2 patent drawing
  • US12606417B2 patent drawing

AI summary

Systems and methods for protecting autonomous mobile machine tailgating may include an elevator control system that receives, from an autonomous mobile machine, an request signal requesting access by the autonomous mobile machine to a restricted floor of a facility. The elevator control system may also determine a presence of an individual in an elevator with the autonomous mobile machine. The elevator control system may perform a tailgate prevention operation to prevent an unauthorized access of the individual to the restricted floor by following the autonomous mobile machine. The elevator control system may also provide access for the autonomous mobile machine to exit the elevator at the restricted floor, in response to the tailgate prevention operation being performed.