Patrol Vehicle Speed Detection in Traffic Radar Systems
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Solution Overview
Problem
Existing traffic radar systems face difficulties in accurately determining patrol vehicle speed without direct connection to the vehicle and require multiple software or firmware interfaces due to varying protocols across different patrol vehicle makes and models.
Innovation Solution
A traffic radar system comprising independent front and rear radar transceivers, a speed determining element, and a processing element that uses GPS signals to calculate patrol vehicle speed and convert relative target vehicle speeds to absolute speeds without needing direct vehicle connection or specific software interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the traffic radar system connects to the patrol vehicle's speed detection electronics, then the patrol vehicle speed can be obtained, but the installation becomes difficult and time consuming
Solution Approach 1:
The patent extracts the speed detection function from the patrol vehicle's internal electronics and implements an independent speed detection device that operates autonomously. This external speed sensor detects the patrol vehicle's speed through mechanical coupling with the vehicle's motion, eliminating the need for complex electrical connections to the vehicle's proprietary speed detection systems while maintaining accurate speed measurement capability
Solution Approach 2:
The patent introduces an intermediary universal interface layer between the radar system and various patrol vehicle models. This interface layer provides standardized communication protocols that can adapt to different vehicle makes and models, serving as a mediator that translates between diverse vehicle-specific protocols and the radar system's requirements, thereby simplifying installation across different vehicle platforms
2Measurement precision
If the traffic radar system uses multiple software or firmware interfaces for different patrol vehicle makes and models, then the patrol vehicle speed can be received, but the system complexity increases
Solution Approach 1:
The patent implements a universal speed detection device that can interface with multiple different patrol vehicle makes and models through a single standardized interface. This universal device incorporates adaptive protocol detection and translation capabilities, allowing it to communicate with various vehicle systems without requiring separate software interfaces for each vehicle type, thereby reducing overall system complexity while maintaining compatibility across diverse platforms
Solution Approach 2:
The speed detection device incorporates self-configuration capabilities that allow it to automatically detect the patrol vehicle's communication protocol and configure itself accordingly. This self-service feature eliminates the need for manual software configuration or multiple pre-programmed interfaces, as the device autonomously adapts to the specific vehicle it is installed on, significantly reducing system complexity
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
Enables efficient and accurate speed determination of target vehicles relative to the patrol vehicle, independent of the patrol vehicle's make or model, simplifying installation and operation while providing precise speed data for law enforcement.
Implementation Method 1
The speed determining element is configured to receive and process radio frequency signals from a global navigation satellite system to determine and output a speed of the patrol vehicle
Implementation Method 2
traffic radar systems that are implemented in law enforcement patrol vehicles typically include at least one radar transceiver that transmits a radar beam and receives reflections of the radar beam as it bounces off of target vehicles
Implementation Method 3
The received reflections of the radar beam are converted to an electronic signal which is processed to determine the speeds of the target vehicles
Data Source
AI summary
A traffic radar system comprises a first radar transceiver, a second radar transceiver, a speed determining element, and a processing element. The first radar transceiver transmits and receives radar beams and generates a first electronic signal corresponding to the received radar beam. The second radar transceiver transmits and receives radar beams and generates a second electronic signal corresponding to the received radar beam. The speed determining element determines and outputs a speed of the patrol vehicle. The processing element is configured to receive a plurality of digital data samples derived from the first or second electronic signals, receive the speed of the patrol vehicle, process the digital data samples to determine a relative speed of at least one target vehicle in the front zone or the rear zone, and convert the relative speed of the target vehicle to an absolute speed using the speed of the patrol vehicle.