Vending Machine Remote Access via Door Switch Interrupter Circuit
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Solution Overview
Problem
Vending machines (VMs) face inefficiencies due to insecure deployment environments, relying on physical security measures and manual processes for access control, which are slow, error-prone, and require on-site technician visits for programming and updates.
Innovation Solution
Integration of telemetry devices and a Door Switch Interrupter Circuit (DSIC) within the VM to automate access control, allowing remote monitoring and execution of protected-mode commands, enabling dynamic programming and functionality such as variable pricing and remote energy management without the need for physical presence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If physical security measures and manual processes are used for access control, then security reliability is improved, but operational efficiency deteriorates due to slow manual programming and frequent on-site visits
Solution Approach 1:
The patent replaces manual mechanical access control with an electronic system that uses a door sensor to detect when the door is open and automatically enables protected-mode commands. This eliminates the need for manual key-based locking and programming, allowing remote technicians to programmatically access and modify VM settings without physical presence, thereby improving operational efficiency while maintaining security through electronic authentication and authorization mechanisms
2Device complexity
If manual programming processes are used, then device complexity is reduced, but programming speed and error rate deteriorate
Solution Approach 1:
The patent introduces a controller as an intermediary between the door sensor and the protected-mode commands. The controller receives the door-open signal from the sensor, validates the access request, and automatically enables the appropriate commands. This intermediary automates the programming process, allowing remote technicians to send commands programmatically without manual intervention, significantly increasing programming speed while the controller manages the complexity of access validation and command routing
3Reliability
If on-site technician visits are required for programming, then access control security is improved, but time loss increases due to frequent travel and manual intervention
Solution Approach 1:
The patent creates a digital copy of the access control mechanism that operates remotely. Instead of requiring physical presence, the system uses electronic authentication and authorization to enable protected-mode commands over a network. This allows technicians to program and update VM settings remotely, eliminating time-consuming travel and manual intervention while maintaining security through electronic verification of technician credentials and authorization levels
Data Source
AI summary
Vending Machines (VMs) employ a series of physical locks to prevent unauthorized access and/or control of the machine. In addition to the lock on the front door, in one embodiment of the invention an electrical door switch is employed that is used to enable a set of protected commands to the Vending Machine Controller Card (VMCC) only when the door has been opened. An electronic override of this switch, via remote control of a telemetry device (VIU) coupled to the VM, allows the VMCC to accept protected-mode commands from a central command server via a wireless network regardless of whether the door was actually opened. Other embodiments are described herein.