Vehicle Work Zone Intrusion Detection Radar System
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Solution Overview
Problem
Law enforcement, emergency, and construction personnel are at risk of being struck by moving vehicles while working in high-traffic areas, as existing technologies do not effectively detect oncoming vehicles or provide timely warnings to prevent collisions.
Innovation Solution
A detection and warning system that uses a radar unit to detect oncoming vehicles and trigger an alarm sound based on speed, distance, and orientation, allowing personnel to react and move out of harm's way, integrated with a controller unit and sound device mounted on stationary vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If radar detection data is continuously monitored and alarm sounds are triggered based on multiple parameters (speed, distance, orientation), then the reliability of collision detection is improved, but the device complexity increases
Solution Approach 1:
The radar unit is designed to perform multiple functions: detecting oncoming vehicles, measuring speed, calculating distance, and determining orientation. This multi-functional approach improves detection reliability without requiring separate devices for each parameter, thus managing complexity while enhancing reliability.
Solution Approach 2:
The system continuously monitors radar detection data and calculates collision risk parameters in advance before actual collision occurs. By performing preliminary detection and risk assessment, the system triggers alarms proactively, improving reliability by detecting potential collisions before they happen.
2Reliability
If alarm sounds are triggered earlier to provide sufficient response time, then the safety of personnel is improved, but the loss of time for normal operations increases
Solution Approach 1:
The system dynamically adjusts the alarm trigger threshold based on multiple parameters including vehicle speed, distance to stationary vehicle, and orientation. By changing these parameters adaptively, the system triggers alarms at optimal times - early enough to ensure safety but not so early as to cause unnecessary operational interruptions.
Solution Approach 2:
The detection system continuously updates collision risk assessment in real-time based on changing vehicle parameters. The alarm trigger point is dynamically determined based on current speed, distance, and orientation data, allowing the system to provide sufficient response time while minimizing unnecessary alarms that would waste operational time.
3Measurement precision
If multiple parameters (speed, distance, orientation) are monitored to accurately detect collision risk, then the measurement precision is improved, but the use of energy increases
Solution Approach 1:
The radar unit is designed to simultaneously measure multiple parameters (speed, distance, orientation) in a single detection operation. This multi-functional capability improves measurement precision for collision risk assessment without requiring multiple separate sensors, thus managing energy consumption while enhancing measurement accuracy.
Solution Approach 2:
The system performs preliminary calculations of collision risk using all detected parameters before triggering an alarm. By processing speed, distance, and orientation data together in advance, the system achieves precise collision risk measurement efficiently, avoiding redundant energy-consuming operations.
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 alerts personnel of potential collisions, providing sufficient reaction time to avoid accidents and enhancing safety in high-risk work zones by accurately detecting oncoming vehicles and triggering audible warnings.
Implementation Method 1
a radar unit to detect oncoming vehicles and trigger an alarm sound
Implementation Method 2
The radar detection data may indicate at least one of the speed and distance of the oncoming vehicle
Data Source
AI summary
Embodiments of an apparatus and methods of use thereof are provided. An apparatus for work zone intrusion detection related to a stationary vehicle, whereby the apparatus includes a processor configured to receive radar detection data about an oncoming vehicle and determine when to trigger an alarm sound in accordance with the radar detection data upon determining that the oncoming vehicle is moving in a direction and at an orientation to collide with the stationary vehicle. A method of using an apparatus for detecting and warning against intrusion in a work zone around a stationary vehicle is provided that includes obtaining, from a radar unit, detection data for a moving vehicle or object approaching the stationary vehicle, and determining, using a processor, when to trigger an alarm sound to allow a response time according to the detection data and a warning mode.