Radar Detector Wireless Connectivity and GPS Filtering
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Solution Overview
Problem
Radar detectors frequently generate false alarms due to the increasing number of non-police signals in the same electromagnetic spectrum, reducing their credibility and effectiveness.
Innovation Solution
A police activity detector with a processor connected to external memory via a secure digital (SD) card interface or USB, incorporating a GPS system and wireless networking capabilities, allowing it to differentiate between true police radar and false signals by storing and referencing location data and user feedback to condition its alerts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If radar detectors monitor all signals in the electromagnetic spectrum to detect police radar, then detection capability is improved, but false alarm rate increases due to non-police signals
Solution Approach 1:
The system uses GPS location data as feedback to compare against a database of known false alarm sources. When the detector identifies a signal, it checks the current GPS coordinates against stored locations of non-police radar sources. If there's a match, the system suppresses the alarm. This feedback mechanism allows the detector to maintain high sensitivity while filtering out known false sources.
Solution Approach 2:
The patent introduces an intermediary database that stores GPS coordinates and characteristics of known false alarm sources. This intermediary layer acts as a mediator between the signal detection process and the alarm output, allowing the system to distinguish between genuine police radar and non-police signals by referencing this intermediate data structure.
2Adaptability or versatility
If radar detectors use broad spectrum monitoring to detect all police radar signals, then coverage is improved, but ability to distinguish true signals from false sources deteriorates
Solution Approach 1:
The system performs preliminary action by pre-populating a database with GPS coordinates and signal characteristics of known false alarm sources before deployment. This advance preparation allows the detector to quickly reference and identify false sources without requiring complex real-time analysis, thereby maintaining broad monitoring capability while improving identification accuracy.
Solution Approach 2:
The patent changes the parameter of signal identification from purely spectral analysis to a multi-parameter approach that includes GPS location matching. By adding the spatial parameter (location coordinates) to the detection process, the system can distinguish between true police radar and false sources even when they operate in the same frequency bands, thereby maintaining broad coverage while improving precision.
3Object-generated harmful factors
If radar detectors store extensive location data and signal characteristics to identify false sources, then false alarm reduction is improved, but device complexity increases
Solution Approach 1:
The patent extracts only the essential data elements needed for false alarm identification: GPS coordinates and basic signal characteristics of known false sources. By taking out only these critical parameters rather than storing complete signal profiles, the system achieves effective false alarm suppression while minimizing data storage requirements and processing complexity.
Data Source
AI summary
Wireless and other external connectivity technology is used in various ways to enhance or improve upon existing radar detector and police activity detection systems. External memory interfaces, such as SD cards or USB, provide external storage. Wireless interfaces such as Bluetooth, Zigbee, 802.11, and wireless personal area network communication protocols, allow a detector processor to interact wirelessly with external devices, such as a Bluetooth headset, a cellular network device providing a server connection, or toggle buttons used to indicate the presence of police activity at a current position. Further, radar detectors are upgraded to provide GPS capabilities, using the existing power/data connector of the radar detector.