Freight Container Locking System with Vibration Energy Harvesting
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Solution Overview
Problem
Current systems for securing and tracking movable freight containers are inadequate in reliability, power efficiency, tamper-proofing, and integration with advanced communication technologies, leading to significant cargo theft and loss worldwide.
Innovation Solution
A system that combines a tracking module with a lock, utilizing GNSS, IoT, and advanced sensors, which includes a power-saving design, vibration energy harvesting, and multi-level communication capabilities, hidden within vehicle components like tail lights, to provide real-time location tracking and security alerts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a tracking and locking system is integrated into freight containers, then cargo security and location tracking are improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines multiple functions (tracking, locking, environmental monitoring, communication) into a single integrated system module that can be installed in freight containers. This merging approach improves cargo security by ensuring all components work together reliably while reducing the overall number of separate devices needed.
Solution Approach 2:
The system is designed as a universal platform that can be applied to various types of freight containers and operates with multiple communication protocols (GPS, cellular, satellite). The multi-functional design allows the same basic system to provide tracking, security, and environmental monitoring across different applications, improving reliability without proportionally increasing complexity.
2Duration of action of moving object
If the system operates continuously for long time periods, then location tracking and security monitoring are improved, but power consumption increases
Solution Approach 1:
The system implements periodic communication and tracking updates rather than continuous operation. The device can adjust its reporting frequency based on conditions, performing measurements continuously but transmitting data periodically, which extends battery life while maintaining effective monitoring capability over long durations.
Solution Approach 2:
The system includes energy harvesting capabilities that allow it to partially power itself from environmental sources such as vibration and temperature differentials. This self-service approach reduces the burden on the main battery, extending operational duration without proportionally increasing power consumption from primary sources.
3Ease of repair
If the system is made visible and accessible, then ease of maintenance and repair are improved, but tamper-proofing capability deteriorates
Solution Approach 1:
The system employs different design approaches for different components: critical security elements are concealed and protected with tamper detection, while non-critical components that need maintenance are made accessible. This local differentiation allows the system to maintain tamper-proofing where needed while preserving ease of repair for routine maintenance tasks.
Solution Approach 2:
The system includes tamper detection sensors that provide immediate feedback when unauthorized access is attempted. This feedback mechanism allows the system to alert operators of potential tampering while still permitting legitimate maintenance activities, balancing security with serviceability through intelligent monitoring rather than pure physical concealment.
4Adaptability or versatility
If multiple communication technologies are integrated, then adaptability and communication capability are improved, but device complexity and power consumption increase
Solution Approach 1:
The system dynamically selects and activates communication modules based on available conditions, such as choosing between cellular, satellite, or GPS-based communication depending on location and signal availability. This dynamic approach provides versatile adaptability across different environments without requiring all communication technologies to operate simultaneously, reducing overall complexity.
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
The system ensures reliable, long-term operation with low power consumption, tamper-proofing, and seamless integration with global communication standards, significantly reducing cargo theft and enhancing logistics security.
Implementation Method 1
a vibration energy harvesting module
Data Source
AI summary
A locking system and method for a movable freight container comprises an electronic module with a shaft that goes into a cavity in a mechanical lock module. The shaft is securely retained in the cavity by a lock mechanism in the mechanical lock module by moving the lock mechanism to a locked position. A plurality of magnetic field sensors in the shaft are used to read the position of the shaft in the cavity by sensing or not sensing one or more magnets in the lock mechanism to confirm continuous time insertion of the shaft in the cavity. A wireless communication component in the electronic module wirelessly transmits an alarm signal if the magnetic field sensors detect an unexpected interruption in at least one of the continuous time shaft position magnetic sensor readings.