Blind Spot Sensor Arrangement for Collision Avoidance
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Solution Overview
Problem
Current advanced driver assistance systems fail to effectively warn drivers of potential collisions with vehicles in adjacent lanes and do not prevent these collisions when another vehicle approaches from the blind spot, especially on freeways and multilane roads, due to inexact detection and lack of intervention mechanisms.
Innovation Solution
The system employs sensors on both longitudinal sides of the vehicle to monitor the side area, emitting warnings through a heads-up display and countersteering torque, and can initiate automatic braking to maintain a predefined safety distance, ensuring the driver is alerted and the vehicle is steered away from danger, with safety distances defined to prevent lane changes and collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensors are added to monitor blind spots and multiple warning mechanisms are implemented, then collision detection capability and driver safety are improved, but device complexity increases
Solution Approach 1:
The patent combines multiple sensor types (ultrasonic, radar, camera) into a unified sensor arrangement that monitors both front and side areas. Multiple warning mechanisms (visual display, acoustic signal, haptic feedback) are integrated into a single control unit that coordinates their activation based on detected threat levels, reducing overall system complexity while maintaining comprehensive monitoring capability
Solution Approach 2:
The control unit serves multiple functions: it processes signals from various sensor types, determines collision risks, selects appropriate warning methods, and coordinates actuators. This multi-functional approach consolidates what would otherwise be separate systems into a single integrated unit, improving reliability without proportionally increasing complexity
2Reliability
If automatic braking intervention is implemented to prevent collisions, then safety is improved, but ease of operation deteriorates due to reduced driver control
Solution Approach 1:
The system implements a staged warning approach before automatic braking: first a visual warning is displayed to alert the driver, then if unrecognized, an acoustic warning is emitted, and only if still unrecognized does automatic braking activate. This preliminary sequence of escalating warnings maintains driver control while ensuring safety through progressive intervention
Solution Approach 2:
The system continuously monitors whether the driver recognizes and responds to warnings. If the driver takes corrective action (steers away or brakes), the automatic braking intervention is canceled. This feedback mechanism ensures driver control is maintained whenever possible while providing automatic intervention only when necessary
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
This solution enhances driver safety by rapidly alerting and assisting in avoiding collisions in the blind spot, reducing the risk of accidents on multilane roads by providing precise monitoring and intervention mechanisms beyond standard driver assistance systems.
Implementation Method 1
at least one sensor arranged in a longitudinal side of the own vehicle and usable for measuring a distance of a foreign object from this longitudinal vehicle side
Data Source
AI summary
An advanced driver assistance system for a vehicle is provided. The advanced driver assistance system includes a sensor arrangement for measuring the distance of a foreign object from the vehicle, and an electronic control unit for activating vehicle-internal actuators as a function of information obtained from a signal of the sensor arrangement. The sensor arrangement includes at least one sensor that is arranged on a longitudinal side of the vehicle and measures the distance of the foreign object from the longitudinal vehicle side. The control unit has a program module which emits a warning message to the driver during a forward drive by a connection to at least one of the actuators when the measured distance of the foreign object from the longitudinal vehicle side is smaller than a predefined safety distance.