Wireless Attendance Modules with Motion Sensors
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing automatic attendance monitoring systems are vulnerable to simulation attempts, such as carrying or exchanging identification transmitters, and require manual interactions for accurate attendance registration, limiting their use in open areas like construction sites and complicating working time registration processes.
Innovation Solution
The system employs wireless identification modules with motion sensors and real-time clocks to transmit motion and environmental data, using correlation coefficients to determine attendance status based on similarity and variability, enabling automatic detection of unauthorized activities without manual analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual interaction is required for accurate attendance registration, then attendance accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The system uses motion sensors and accelerometers in identification modules to automatically detect and verify subject presence without requiring manual interaction. The computation-decision unit autonomously analyzes motion patterns, correlation coefficients, and variability to determine attendance status, making the system self-verify and eliminating manual registration steps
2Reliability
If fixed connection of transmitter to subject is implemented, then reliability against simulation attempts is improved, but device complexity deteriorates
Solution Approach 1:
The system continuously monitors motion signals from accelerometers and uses feedback loops to analyze correlation coefficients between different identification modules. The computation-decision unit processes variability in motion patterns over time, providing continuous verification that detects unauthorized detachment or exchange of transmitters without requiring fixed physical connection mechanisms
Solution Approach 2:
The patent replaces mechanical fixed-connection methods with electronic and algorithmic verification systems. Motion sensors, wireless transmitters, and computation algorithms substitute for physical locking mechanisms, using digital signal processing and statistical analysis to ensure transmitter-subject correspondence without mechanical constraints
3Reliability
If entrance-exit terminals with gates are installed, then reliability of attendance registration is improved, but device complexity and loss of time deteriorate
Solution Approach 1:
The system uses wireless base receivers that can detect identification modules anywhere in the monitored area, eliminating the need for specialized entrance-exit terminals and gates. The same receiver infrastructure serves multiple functions: attendance detection, location tracking, and verification across arbitrary points in the area, simplifying the overall system architecture
4Measurement precision
If manual analysis is used to detect simulation attempts, then measurement precision is improved, but loss of time deteriorates
Solution Approach 1:
The patent replaces manual analysis with automated computation and decision-making systems. The computation-decision unit continuously processes motion signal data, calculates correlation coefficients, analyzes variability patterns, and detects simulation attempts in real-time using algorithms, eliminating the need for human analysts while maintaining high detection precision
Solution Approach 2:
The system performs continuous automated monitoring and analysis of motion patterns without interruption. The computation-decision unit operates continuously to detect simulation attempts, eliminating the periodic or manual nature of human analysis and ensuring constant surveillance with immediate detection capability
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
This approach provides robust resistance against attendance simulation and eliminates the need for manual registration, allowing seamless monitoring across arbitrary points in a monitored area, enhancing security and simplifying working time registration without the need for individual entrance/exit terminals.
Implementation Method 1
transmitting in said notification messages by the wireless transmitters of the identification modules individual motion signals representing a motion of a given identification module and obtained using an output signal of a motion sensor, preferably an accelerometer
Data Source
Figure 1~3
Figure 4~5
Figure 6~7
AI summary
The present invention relates to a method for an automatic monitoring of attendance of subjects within a predetermined monitored area comprising periodically realized steps of: a) transmitting by a wireless transmitter (23) of at least one identification module (2), assigned and attachable to a given subject (7) the attendance of which is to be monitored, a notification message (Nm) comprising an individual attendance signal (las) comprising identification data of the given identification module (2) stored in the module internal memory (21); b) receiving by a wireless base receiver (3) notification messages (Nm) transmitted by the transmitters (23) of said identification modules (2) located within the monitored area (8); c) determining attendance statuses (As) of individual subjects (7) within the monitored area (8) by a computation-decision unit (4), connected to said wireless base receiver (3), on the basis of notification messages (Nm) received by said base receiver (3) from identification modules (2) assigned and attachable to individual subjects (7), wherein a given subject attendance status (As) of an "absent" value is determined in a case of a lack of a reception of an individual attendance signal (las) of the identification module (2) assigned to the given subject (7) for a predetermined time period; d) registering in a memory (5) by the computation-decision unit (4) an information related with attendance statuses (As) of individual subjects (7) in the monitored area (8); characterized in that the step a) additionally comprises transmitting in said notification messages (Nm) by the wireless transmitters (23) of the identification modules (2) individual motion signals (Ims) representing a motion of a given identification module (2) and obtained using an output signal of a motion sensor, preferably an accelerator, of a given identification module, and the step c) additionally comprises determining by the computation-decision unit (4) a given subject (7) attendance status (As) of an "absent" value within the monitored area in a case of indicating for a predetermined time period by the individual motion signal (Ims) for a motionless status of an identification module (2) assigned to the given subject (7). The present invention relates also to a system for an automatic monitoring of attendance of subjects within a predetermined monitored area.