Rear Parking Braking Control Using Ultrasonic Valid Target Detection

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Solution Overview

Problem

Existing rear parking collision avoidance systems face issues with improper braking, low response speed, and irregular distance after braking due to limitations in target recognition and deceleration control, particularly in complex parking environments.

Innovation Solution

A rear parking collision avoidance system utilizing ultrasonic sensors to determine valid targets based on remaining distance (RDC) and target deceleration, adjusting braking control to ensure a consistent remaining distance of 25 cm post-braking, enhancing target recognition probability and reducing improper braking.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional target recognition and deceleration control methods are used, then the system can perform basic braking functions, but improper braking occurs and response speed is slow

Engineering Contradiction:

Improvebraking control accuracyVSAvoidresponse speed

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent applies parameter changes by dynamically adjusting the deceleration rate based on the remaining distance to the target. Instead of using a fixed deceleration value, the system calculates and applies different deceleration parameters according to the real-time distance measurement, which improves both the accuracy of braking control and the response speed by optimizing the deceleration profile for each specific situation.

Inventive Principle:

Principle #35Parameter changes

2Manufacturing precision

If conventional deceleration control is used, then braking can be performed, but the post-braking distance is irregular and improper braking occurs

Engineering Contradiction:

Improvepost-braking distance consistencyVSAvoidbraking control accuracy

Core Design Contradiction:

Manufacturing precisionVSReliability

Solution Approach 1:

The patent implements feedback control by continuously monitoring the remaining distance to the target during braking and adjusting the deceleration rate in real-time. The system uses the measured distance information as feedback to modify the braking command, ensuring that the vehicle stops at the desired position with consistent post-braking distance. This closed-loop control eliminates improper braking by verifying that braking conditions are met before executing the braking maneuver.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system applies dynamics by making the deceleration rate variable rather than fixed. The deceleration parameter is dynamically adjusted based on the remaining distance to the target, allowing the braking control to adapt to changing conditions. This dynamic approach ensures consistent stopping positions and prevents improper braking by optimizing the deceleration profile for each specific distance scenario.

Inventive Principle:

Principle #15Dynamics

3Measurement precision

If ultrasonic sensors are used for target detection, then obstacle detection is achieved, but target recognition probability is low in complex parking environments

Engineering Contradiction:

Improvetarget recognition accuracyVSAvoidperformance in complex environments

Core Design Contradiction:

Measurement precisionVSAdaptability or versatility

Solution Approach 1:

The patent applies preliminary action by pre-calculating the required deceleration rate based on the measured remaining distance before braking is initiated. The system performs distance measurement and deceleration calculation in advance, preparing the optimal braking parameters before the actual braking maneuver begins. This preliminary computation of braking parameters based on pre-measured distance improves target recognition accuracy by establishing clear braking criteria before execution.

Inventive Principle:

Principle #10Preliminary action

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 significantly reduces the probability of improper braking and increases response speed by accurately determining valid targets and applying appropriate deceleration, maintaining a consistent post-braking distance, thereby improving safety in rear parking scenarios.

Implementation Method 1

a plurality of ultrasonic sensors; and a controller operatively connected to the plurality of ultrasonic sensors and configured to control braking and braking deceleration according to one or more sensor values obtained from the ultrasonic sensors

Methodology Applied

Scientific EffectUltrasonic detection: Ultrasound

Data Source

PatentUS20260008443A1Rear parking collision avoidance control device and method therefor

Publication Date: 2026.01.08 HYUNDAI MOBIS CO LTD

AI summary

An apparatus for performing rear parking collision avoidance of a vehicle is disclosed. The apparatus may include: a plurality of ultrasonic sensors; and a controller operatively connected to the plurality of ultrasonic sensors and configured to control braking and braking deceleration according to one or more sensor values obtained from the ultrasonic sensors. The controller may be configured to generate an obstacle detected according to the sensor values as a valid target; confirm the valid target as a braking target for the rear parking collision avoidance; and in response to that the valid target is confirmed as the braking target, perform braking control of the vehicle at a target deceleration determined according to a remaining distance between the vehicle and the braking target. The remaining distance corresponds to a target distance between the vehicle and the braking target after the braking control.