Electro-mechanical Lock with Dual Ratcheting Cam and Rolling Code
Solution Overview
Problem
Current cargo security solutions lack accountability and tamper detection, making it difficult to determine when and where theft occurs, and they are often expensive and require physical keys or combinations, which can be tampered with by drivers for criminal intent, and they do not provide a comprehensive security mechanism for intermodal transportation.
Innovation Solution
A re-usable, electro-mechanical lock with a dual ratcheting cam mechanism that logs all operations and tampering events with date and time stamps, uses a rolling access code algorithm, and includes GPS tracking and tamper sensors, providing secure, tamper-proof, and cost-effective security for cargo containers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If physical keys or combinations are used for locking, then the locking mechanism is simple and reliable, but accountability and tamper detection are lost
Solution Approach 1:
The patent combines a traditional mechanical locking mechanism with an electronic logging system into a single integrated device. The mechanical components (bolt, cam, receiver) provide reliable physical security, while the electronic components (microcontroller, memory, sensors) simultaneously record all operations and tampering events with timestamps, eliminating the information loss inherent in simple mechanical locks.
Solution Approach 2:
The locking device performs multiple functions: it provides physical security through the mechanical locking mechanism, tracks operational history through event logging, detects tampering through sensors, and enables remote monitoring. This multi-functionality resolves the contradiction by adding accountability capabilities without sacrificing the reliability of the core locking function.
2Ease of operation
If reusable locks with physical keys are used, then operational convenience is improved, but drivers can tamper with goods using controlled keys
Solution Approach 1:
The system implements feedback through comprehensive event logging that records every unlock operation with timestamps and operator identification. This creates an audit trail that provides deterrence against tampering, as all actions are tracked and can be reviewed. The feedback mechanism transforms the unrestrained convenience of physical keys into a monitored operation that discourages malicious behavior.
Solution Approach 2:
The patent replaces the purely mechanical key-operated system with an electro-mechanical system that uses electronic authentication and logging. The mechanical locking function remains, but the key operation is supplemented by electronic recording and monitoring, substituting the trust-based mechanical system with a verifiable electronic system that eliminates internal tampering risks.
3Reliability
If single-use locks are used, then security is simplified, but additional cutting tools and bolt replacement are required
Solution Approach 1:
The lock is designed as a reusable device with durable components that are pre-configured for multiple uses. The mechanical components are built to withstand repeated locking and unlocking cycles, eliminating the need for disposable bolts and cutting tools. This preliminary preparation of robust, reusable components resolves the complexity of bolt replacement while maintaining security.
4Measurement precision
If comprehensive security monitoring is implemented, then theft detection capability is improved, but cost and system complexity increase
Solution Approach 1:
The security monitoring function is segmented into discrete, modular components: individual sensors for detecting specific tampering types, separate logging modules for different event categories, and structured data storage. This segmentation allows the system to provide comprehensive monitoring while managing complexity through modular design, where each component performs a specific function that can be independently maintained and updated.
Data Source
AI summary
An electro-mechanical lock for cargo containers or similar enclosed spaces such as storage units. The locking mechanism includes a dual-ratcheting mechanism, which is normally in the locked position, and which firmly secures doors of a container or other enclosure. To unlock the device, the user obtains a temporary access code and unlocks the device, either by a wireless interface or by, for example, a key pad. The device incorporates a rolling access code algorithm that changes the access code based upon a pre-defined customer selected time period during which the code is valid. Once the validity period expires the user must obtain a new access code from a secure access code source to unlock the device. When access is desired, the user contacts a remote secure access code source, which provides the access code for the associated lock and time period.