Banknote Transport Sensor Rotary Drum Detection
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Solution Overview
Problem
Existing devices for storing and transporting notes of value, such as cash, often inaccurately trigger security measures like ink kits during transportation, leading to unnecessary invalidation of notes and increased costs due to false alarms, while deactivating sensors for transport mode compromises security.
Innovation Solution
A device with a sensor to detect rotary movement of the winding drum, a control unit to manage an ink kit for invalidating notes, and modes (ATM and transport) to prevent unauthorized access, ensuring secure detection of manipulation attempts without false triggers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If acceleration, position and/or shock sensors are used to protect notes of value against manipulation, then security is improved, but false triggering during transport occurs leading to unnecessary invalidation of notes
Solution Approach 1:
A rotary movement sensor is introduced as an intermediary detection element that specifically monitors the winding drum's rotation. This mediator provides more precise information about actual manipulation attempts versus transport movements, reducing false alarms while maintaining security. The sensor acts as a bridge between the physical state of the notes and the control system's response.
Solution Approach 2:
The system changes the detection parameter from general acceleration/position/shock to specific rotary movement of the winding drum. This parameter change allows the system to distinguish between transport vibrations (no drum rotation) and manipulation attempts (drum rotation), thereby reducing false triggering while maintaining reliable security detection.
2Measurement precision
If sensors are deactivated during transport to avoid false triggering, then false alarms are reduced, but security against manipulation attempts is compromised
Solution Approach 1:
The rotary movement sensor serves as a continuous intermediary monitoring element that remains active during transport. It provides specific information about winding drum rotation without requiring deactivation of the security system, thus maintaining protection while reducing false alarms through precise measurement.
Solution Approach 2:
The system replaces the general mechanical shock/acceleration sensing with a more specific rotational sensing mechanism. This substitution allows the security system to remain active and sensitive while being selectively triggered only by relevant manipulations (drum rotation) rather than transport vibrations.
3Reliability
If the ink kit is triggered to invalidate notes, then security against theft is improved, but unnecessary invalidation occurs during accidental drops or transport
Solution Approach 1:
The triggering parameter changes from general acceleration/shock to specific rotary movement of the winding drum. This ensures that only manipulation attempts involving drum rotation trigger the ink kit, preventing unnecessary invalidation during accidental drops or transport while maintaining theft prevention capability.
Solution Approach 2:
The rotary movement sensor acts as an intermediary that filters between physical disturbances and the ink kit triggering. It provides selective information that distinguishes between harmful manipulations (drum rotation) and harmless events (drops, vibrations), thereby preventing loss of valid notes while maintaining security.
4Measurement precision
If deactivating sensors during transport, then false triggering is avoided, but attempts at manipulation become easier and security is reduced
Solution Approach 1:
The system replaces general vibration/acceleration sensing with specific rotational sensing that remains effective during transport. This substitution allows the security system to stay active and detect manipulation attempts while being inherently resistant to false triggering from transport movements, thus not increasing security vulnerability.
Data Source
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AI summary
The invention relates to an apparatus (20) for transporting and/or storing banknotes. The apparatus (20) comprises a roll store with a winding drum (1, 30). The apparatus (20) also has a sensor (26, 34) for detecting a rotational movement of the winding drum (1, 30).