Self-checking Cash Box Sensor Validation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cash boxes often experience unnecessary triggering of invalidating units due to defective sensors or improper handling, leading to damage and contamination, even when no manipulation attempt is present.
Innovation Solution
The control unit checks the proper functioning of sensors before activating the cash box, ensuring that only functioning sensors are considered, and if any sensor is defective, the cash box remains in a deactivated state to prevent false triggering, with a method to re-check sensors for potential user- or service-level corrections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensors are installed to detect manipulation attempts, then security detection capability is improved, but false triggering of the invalidating unit increases due to defective sensors or improper handling
Solution Approach 1:
The control unit performs a preliminary check of sensor functionality during the activation phase before the cash box becomes operational. This preliminary action identifies defective sensors that could cause false triggering, allowing the system to prevent activation or exclude faulty sensors from triggering the invalidating unit, thereby resolving the contradiction between detection capability and false triggering risk
Solution Approach 2:
The system implements a feedback mechanism where sensor signals are continuously monitored and evaluated by the control unit. The control unit assesses whether sensor activations represent genuine manipulation attempts or false signals, and only triggers the invalidating unit when manipulation is confirmed, thus maintaining security while preventing false triggering damage
2Reliability
If the invalidating unit is triggered to protect notes, then security is improved, but considerable damage occurs to notes and cash box due to dye contamination
Solution Approach 1:
The control unit serves as an intelligent intermediary that receives signals from sensors, evaluates their validity, and decides whether to trigger the invalidating unit. This feedback-based decision-making ensures the invalidating unit is only activated when genuine manipulation is detected, providing security protection while avoiding unnecessary dye contamination damage
Solution Approach 2:
The control unit acts as an intermediary between the sensor unit and the invalidating unit. It processes sensor signals, determines whether they represent actual threats, and selectively activates the invalidating unit only when necessary, thus mediating between security requirements and damage prevention
3Ease of operation
If activation is allowed without sensor checking, then ease of operation is improved, but the risk of false triggering increases
Solution Approach 1:
The sensor functionality check is performed automatically as a preliminary step during the activation process. This preliminary action maintains ease of operation for the user while systematically identifying and managing defective sensors that could cause false triggering, thus resolving the contradiction between operational simplicity and reliability
Data Source
AI summary
The invention relates to a cash box (10) having a receiving area (12) for receiving notes of value, an invalidating unit (14), a sensor unit (18) for detecting manipulation attempts and a control unit (16). In an activated operating state, the control unit (16) triggers the invalidating unit (14) when the sensor unit (18) detects a manipulation attempt. In a deactivated operating state, the control unit (16) does not trigger the invalidating unit (14) even in the presence of a manipulation attempt. Prior to the activation of the cash box (10), the control unit (16) checks the proper functioning of at least one sensor (20) of the sensor unit (18). In addition, the invention relates to a method for activating a cash box (10).