Photograph-Based Security Guard Tracking System
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Solution Overview
Problem
Current security measures, including automated systems and human inspections, face limitations in accuracy, consistency, and response to unexpected events, with issues such as wrongful assignment of security duties and unstable network connections affecting the reliability of position and time tracking.
Innovation Solution
A position and time tracking system utilizing photographs with a client and host network connection, featuring an input unit with imaging devices, a variable-checking unit, and a data storage unit that compresses and stores images for real-time transmission, allowing for accurate monitoring without additional device installations and stable network requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If security guards use identification devices to verify their position, then the reliability of security monitoring is improved, but the system becomes vulnerable to wrongful duty assignments where one guard can assign or accept devices for another
Solution Approach 1:
The system captures photographs of security guards at inspection spots and stores them as verification records. Instead of relying solely on physical identification devices that can be misassigned, the system creates visual copies (photographs) of guards at specific locations and times, which are then verified against inspection records to prevent wrongful duty assignments.
Solution Approach 2:
The system replaces the mechanical identification device assignment system with an automated photograph-based verification system. Rather than manually assigning and tracking physical devices, the system uses automated photograph capture, compression, and verification to confirm guard presence and duty performance, eliminating the vulnerability of device misassignment.
2Measurement precision
If additional devices and tools are installed at inspection spots, then the accuracy of position verification is improved, but the installation and maintenance costs increase
Solution Approach 1:
The system uses mobile clients (smartphones or portable devices) that security guards already possess, eliminating the need to install dedicated verification devices at each inspection spot. The same client device serves multiple functions: capturing photographs, verifying position, and communicating with the host system, thereby reducing installation and maintenance costs while maintaining verification accuracy.
Solution Approach 2:
Security guards use their own mobile devices to capture and transmit verification photographs, eliminating the need for the system to provide or maintain dedicated verification equipment at inspection locations. The guards self-verify their presence using readily available technology, reducing the system's infrastructure requirements.
3Reliability
If stable network connection is required for real-time data transmission, then the reliability of data transmission is improved, but the system cannot operate in areas with unstable connections
Solution Approach 1:
The system compresses photographs and verification data locally on the client device before transmission, preparing the data in advance for efficient transmission. This preliminary compression reduces the data size and transmission time, allowing the system to operate effectively even in areas with unstable or slow network connections.
Solution Approach 2:
The system dynamically adjusts data transmission parameters based on network conditions. By compressing images to smaller file sizes and optimizing transmission protocols, the system can maintain reliable data transmission even when network bandwidth or stability is limited, enabling operation in diverse network environments.
4Measurement precision
If multiple imaging devices are used to capture photographs, then the accuracy of position tracking is improved, but the device complexity and cost increase
Solution Approach 1:
The system divides the imaging function across multiple clients rather than using multiple fixed imaging devices at each inspection spot. Each client device captures photographs independently, and the host system aggregates these segmented verification records to confirm guard presence and position, reducing the complexity of centralized imaging infrastructure.
Solution Approach 2:
The mobile client devices serve as intermediaries between the guard and the host system. Instead of the host system directly controlling multiple imaging devices, the client devices capture and transmit photographs as intermediate verification records, simplifying the overall system architecture while maintaining tracking accuracy.
Data Source
AI summary
The position and time tracking system based on photographs comprises a host and a client connected via network. The client's memory is saved in with an input, which controls at least two imaging devices together with a variable-checking device. At least the client's position and time tracking variables are compared with rules that are input from the host via a user interface unit in authorising the imaging devices to take image input, where acquired images are compressed with the checked variables, and a data storage unit checks network connection's stability and transmits data to the host once the connection is stable. Conversely, if the connection is unstable, images are saved into the client's memory, and data are transmitted to the host when the connection has been stable.