Access Obstacle Control via Position Feedback for Safety and Fraud Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing access supervision systems fail to ensure user safety and effectively prevent fraud, as they may not detect users in the passageway, leading to potential collisions during obstacle redeployment and allow fraudulent users to bypass the barrier.
Innovation Solution
An access supervision system that compares the measured position of the obstacle with a theoretical position in real-time, using a control module to adjust the torque applied by electric drive means, including a brushless synchronous motor, to stabilize or increase torque based on position differences, and generate a frequency sound for fraud detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If presence sensors are used to detect users in the passageway, then fraudulent users can be identified, but users may still not be detected and collision risks remain
Solution Approach 1:
The control module continuously compares the measured position of the obstacle with the theoretical position to detect any deviations. This feedback mechanism allows the system to identify when a user is present in the passageway by detecting position discrepancies, enabling real-time adjustment of obstacle deployment to prevent collisions while maintaining fraud detection capability
Solution Approach 2:
The system performs preliminary detection of user presence by comparing obstacle position before deployment. When a position difference is detected indicating user presence, the control module prevents obstacle deployment in advance, eliminating collision risk before it can occur while maintaining the ability to detect fraudulent attempts
2Reliability
If the obstacle is deployed to block the passageway, then fraud prevention is enhanced, but user safety is compromised due to potential collisions during redeployment
Solution Approach 1:
The control module uses continuous feedback from position sensors to monitor the passageway status. When the obstacle position deviates from the theoretical position indicating user presence, the system adjusts deployment commands to prevent collision, thereby maintaining fraud prevention while ensuring user safety
Solution Approach 2:
The system dynamically adjusts the obstacle deployment based on real-time position feedback. When users are detected through position discrepancies, the deployment timing and speed are modified to ensure safety, allowing the system to adapt between maximum security and maximum safety based on current conditions
3Strength
If the obstacle is made strong to prevent fraud, then barrier effectiveness increases, but the risk of injury during collision increases
Solution Approach 1:
The control module performs preliminary detection of user presence before initiating obstacle deployment. When presence is detected through position comparison, deployment is prevented or delayed, ensuring that the strong barrier is only activated when the passageway is clear, thus maintaining barrier strength while eliminating injury risk
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
Enhances user safety by reducing collision risks and effectively preventing fraud attempts by dynamically controlling the obstacle's position and torque, while facilitating safe evacuation and maintaining low-voltage electrical safety.
Implementation Method 1
the motor is adapted to be supplied with driving current for the motor and vibrating current for the motor, the vibrating current being capable of causing the motor to produce a frequency sound included between 2 kHz and 20 kHz when it is supplied with vibration current
Data Source
AI summary
The invention relates to a system for supervising access to a restricted area, including at least one obstacle that is mobile between a deployed configuration, in which said obstacle extends across a passageway for the entry and/or exit to/from said restricted area, and a stowed configuration in which said obstacle is removed from said passageway. The system also includes a unit for driving the obstacle between the deployed configuration and the stowed configuration, a device for measuring the position of the obstacle, and a module for controlling the drive unit. The control module is suitable for comparing the measured position of the obstacle at at least one moment in time with a theoretical position of the obstacle at said moment in time, and to derive a rule for controlling the drive unit.