Radar Device Angle Adjustment via Gravity Sensor
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Solution Overview
Problem
Existing radar-type speed control devices struggle to adjust measurement distances after installation, making it difficult to effectively enforce speed limits in speed trap areas, where vehicles often reduce speed to avoid detection.
Innovation Solution
A speed camera-assisting radar device that includes a gravity sensor unit to detect changes in installation angle, a radar sensor unit with multiple antennas for measuring vehicle speed in different sections, and a radar setting unit that automatically adjusts the radar profile based on the installation angle, allowing for easy adjustment of measurement distances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the radar device is installed on a tall structure with a fixed installation angle, then the measurement distance is optimized for that specific angle, but it becomes difficult to change the measurement distance after installation
Solution Approach 1:
The radar device incorporates a movable mounting structure that allows the installation angle to be dynamically adjusted after installation. The gravity sensor detects angle changes and the control unit automatically adjusts radar parameters, transforming a static system into a dynamic one that can adapt to different measurement distances while maintaining measurement precision
Solution Approach 2:
The system automatically changes radar operating parameters (such as frequency, power, and beam direction) based on the detected installation angle. When the angle changes, the control unit modifies these parameters to optimize the measurement distance, enabling the same hardware to effectively measure different distances without requiring physical relocation
2Area of stationary object
If the measurement distance is extended to cover larger areas, then more vehicles can be monitored, but the installation angle must be precisely adjusted which complicates the installation process
Solution Approach 1:
The radar device performs self-calibration and self-adjustment based on gravity sensor readings. After installation, the system automatically detects the installation angle and adjusts its operating parameters accordingly, eliminating the need for manual angle adjustment and complex calibration procedures by installation technicians
Solution Approach 2:
The gravity sensor continuously monitors the installation angle and provides feedback to the control unit. This closed-loop feedback system allows the radar to automatically compensate for angle variations and optimize its measurement parameters, simplifying the installation process while maintaining large coverage area effectiveness
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 automatic adjustment of speed trap areas in response to changes in installation angle, ensuring effective speed measurement and enforcement without the need for manual intervention or frequent recalibration.
Implementation Method 1
a gravity sensor unit (100) to detect a change in an installation angle of the device
Implementation Method 2
a radar sensor unit (110) including a plurality of transmitting antennas and receiving antennas to measure a speed of a vehicle in consecutive frames
Implementation Method 3
a radar sensor unit (110) including a plurality of transmitting antennas and receiving antennas to measure a speed of a vehicle
Data Source
AI summary
A speed camera-assisting radar device determines an installation angle using a gravity sensor, determines a speed measurement section appropriate for the installation angle, and automatically sets a radar parameter appropriate for the speed measurement section.