Proximity Alert System for Access Badges Using Wireless Separation Detection
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Solution Overview
Problem
Existing proximity alert systems for access badges do not effectively alert users when the badge is separated beyond a desired distance from the receiver, lacking a transmitter-receiver configuration specifically designed for this purpose.
Innovation Solution
A proximity alert system comprising a transmitter assembly that can be attached to an access badge and a receiver assembly that can be attached to a lanyard, badge holder, or clothing, using wireless communication to trigger an alarm when the transmitter and receiver are separated by a defined distance, with components such as Bluetooth devices, GPS, LEDs, and a speaker for notification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a proximity alert system uses a transmitter attached to a badge and a receiver to alert when separated beyond a desired distance, then the user can be notified of badge separation, but the system complexity increases compared to simple magnetic sensors
Solution Approach 1:
The system divides the proximity alert function into two separate components: a transmitter unit that attaches to the badge and a receiver unit that attaches to the user's clothing or bag. This segmentation allows each component to be simple and inexpensive while the combined system provides reliable separation detection through wireless communication between the two units.
2Measurement precision
If existing magnetic sensors are used for proximity detection, then the alarm can be triggered when separated, but the system does not provide precise distance measurement and user awareness
Solution Approach 1:
The transmitter unit incorporates multiple functions including distance measurement via accelerometer detection, wireless communication capability, and alarm triggering. By making the transmitter multi-functional, the system achieves precise distance measurement and user notification without requiring separate complex components, keeping manufacturing costs low.
3Reliability
If a proximity alert system is implemented with transmitter and receiver units, then badge loss prevention is improved, but the device weight and size increase
Solution Approach 1:
The transmitter unit uses dynamic motion detection through accelerometers to determine separation between the badge and user. Instead of relying on heavy static magnetic sensors or continuous power-intensive wireless signals, the system dynamically detects motion patterns to identify when the badge has been separated, providing reliable loss prevention with minimal weight addition.
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 effectively prevents loss of access badges by alerting users when the badge is left behind, while being inexpensive to implement and maintain, ensuring user awareness of the badge's location.
Implementation Method 1
using wireless communication to trigger an alarm when the transmitter and receiver are separated by a defined distance
Implementation Method 2
a speaker for notification
Data Source
AI summary
A proximity alert system for access badges including a transmitter assembly and a receiver assembly is disclosed herein. The transmitter assembly includes a transmitter housing. The transmitter housing includes a battery compartment. The housing assembly further includes a light to indicate the status of the battery. The housing assembly also includes a transmitter sensor and an adherable side to attach the transmitter assembly to a badge. The receiver assembly includes a receiver housing. The receiver housing includes a battery compartment, a light, a speaker, a motor, a clip and a receiver sensor. The light indicates the status of the battery. The receive sensor communicates with the transmitter sensor. The receiver sensor activates the motor and the speaker if the transmitter assembly and the receiver assembly are far from each other.