Movable Barrier Detection Using Magnetic and Accelerometer Sensors
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Solution Overview
Problem
Current methods for restricting access to buildings or rooms for safety reasons are inefficient and prone to violations, as manual checks are labor-intensive and often miss unauthorized access, leading to non-compliance with safety standards.
Innovation Solution
A device equipped with sensors and a processor that detects when a movable barrier is opened, generating alerts and wirelessly transmitting them to a remote entity, using IoT technology with 3G modem/NB-IoT and M2M Sim card for communication, and featuring GPS, magnetic, tamper, and accelerometer sensors interfaced with a microcontroller, including Bluetooth Low Energy for short-range communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual verification methods are used to check compliance with access restrictions, then the system is simple to implement, but it is labor-intensive and time-consuming for authorities
Solution Approach 1:
The patent replaces manual mechanical verification with an automated electronic sensor system. Sensors (magnetic, accelerometer, GPS) automatically detect door opening events and transmit data wirelessly, eliminating the need for physical inspection by authorities while providing continuous monitoring capability.
Solution Approach 2:
The monitoring device performs self-monitoring and self-reporting functions. It automatically detects when access restrictions are violated, processes the sensor data internally, and transmits alerts without requiring human intervention for each compliance check, thereby improving productivity while maintaining system simplicity.
2Device complexity
If periodic manual inspection is conducted to verify access restriction compliance, then implementation is straightforward, but it is impractical and labor-intensive
Solution Approach 1:
The sensor-based system provides continuous real-time monitoring rather than periodic discrete inspections. The device continuously monitors door status, location, and movement, immediately detecting and reporting violations as they occur, eliminating time loss associated with scheduling and conducting periodic manual inspections.
Solution Approach 2:
Automatic electronic sensing and wireless communication replace manual inspection processes, enabling continuous monitoring without the time investment required for periodic human visits. The system autonomously detects and reports compliance status, freeing authorities from time-consuming manual verification.
3Device complexity
If manual verification of access restriction compliance is performed, then the system requires minimal technology, but violations often go unnoticed
Solution Approach 1:
The patent employs electronic sensors (magnetic field detection, accelerometer movement sensing, GPS location tracking) that provide more reliable and consistent detection than manual inspection. These sensors continuously monitor for unauthorized access and transmit alerts, ensuring violations are detected and reported reliably without the variability inherent in manual verification.
Solution Approach 2:
The system establishes a feedback loop where sensors continuously monitor compliance status and immediately transmit alerts when violations occur. This real-time feedback mechanism ensures reliable detection and reporting of access restriction violations, eliminating the delays and inconsistencies of manual verification processes.
4Productivity
If store owners can reopen immediately after inspection, then business continuity is maintained, but safety issues may persist unresolved
Solution Approach 1:
The monitoring device is installed and activated before the store reopening to establish continuous surveillance. This preliminary setup ensures that safety compliance is verified in real-time from the moment of reopening, preventing unauthorized access while allowing business to continue operation under monitored conditions.
Solution Approach 2:
The real-time monitoring system provides continuous feedback to authorities about access restriction compliance. This enables ongoing verification of safety standards without interrupting business operations, allowing stores to reopen while maintaining enforced compliance through automated surveillance and immediate alerting of any violations.
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 device effectively monitors and reports unauthorized access, ensuring compliance with access restrictions by reducing manual checks and providing real-time alerts, thus enhancing safety and reducing costs for authorities.
Implementation Method 1
The sensors may be interfaced with a microcontroller, which may also comprise a Bluetooth® Low Energy SOC (System on Chip). The device may detect whenever the door is opened from sensor signals generated by any one or more of the sensors, such as signals generated by the magnetic sensor and the accelerometer.
Implementation Method 2
The device may detect whenever the door is opened from sensor signals generated by any one or more of the sensors, such as signals generated by the magnetic sensor and the accelerometer.
Implementation Method 3
In some embodiments the device may comprise 4 types of sensors: GPS sensors, magnetic sensors, tamper sensors and accelerometers.
Implementation Method 4
The device may also comprise a communication module for wirelessly transmitting the first alert message to a remote entity.
Data Source
AI summary
Disclosed herein are devices for detecting if a movable barrier obstructing a portal has been opened, the devices comprising: at least one sensor configured to detect when the barrier is manipulated from a closed position in which the portal is obstructed, to an open position enabling access to the portal; a processor configured to generate a first alert message when sensor data indicative of the barrier being manipulated from the closed position to the open position, is received; and a communication module for wirelessly transmitting the first alert message to a remote entity.