Vehicle Automatic Parking Brake Control via Dynamic Threshold Adjustment
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Solution Overview
Problem
Conventional automatic parking systems in vehicles rely on rear cameras and ultrasonic sensors, which can fail to detect certain areas or malfunction, leading to unsafe parking conditions.
Innovation Solution
A vehicle system that includes a storage for setting values, a communicator, a detector, and a controller to manage brake and driving devices based on detected object contact and relative acceleration, using deep learning to enhance parking mode control and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional sensors (rear camera and ultrasonic sensor) are used for automatic parking, then the system structure is simple, but the detection coverage is insufficient and safety is compromised
Solution Approach 1:
The patent combines multiple detection technologies (rear camera, ultrasonic sensor, and radar) into a unified automatic parking system. The radar detector is integrated with existing sensors to provide comprehensive detection coverage, merging the advantages of different detection methods to achieve both improved safety and maintained system simplicity.
Solution Approach 2:
The radar detector serves multiple functions: it detects objects in areas where conventional sensors fail, provides backup detection capability, and enhances overall system reliability. This multi-functional approach allows a single additional component to address multiple detection gaps simultaneously.
2Reliability
If the detection threshold is set high (first setting value) for normal operation, then false detections are reduced, but contact accidents may occur during parking
Solution Approach 1:
The system dynamically adjusts the detection threshold based on the operational mode. During automatic parking, the threshold is set to the lower second value for sensitive detection, while during normal driving, it uses the higher first value. This dynamic adaptation allows the same detector to optimize performance for different operational contexts without requiring separate hardware systems.
Solution Approach 2:
The patent changes the detection parameter (threshold value) based on the automatic parking signal state. When the automatic parking signal is active, the controller uses the second setting value with smaller magnitude for threshold comparison, enabling sensitive detection of approaching objects. This parameter change resolves the contradiction by adapting the detection sensitivity to the specific operational phase.
3Measurement precision
If the automatic parking system continuously monitors all areas, then detection accuracy is high, but energy consumption increases
Solution Approach 1:
The detector operates periodically based on the automatic parking signal rather than continuously. The controller activates the detector only when the automatic parking signal is received, performing detection at specific intervals during the parking maneuver. This periodic operation maintains high detection accuracy when needed while significantly reducing energy consumption during non-parking periods.
Data Source
AI summary
A vehicle includes a brake device; a storage configured to store a first setting value and a second setting value having a smaller magnitude than the first setting value; a communicator configured to receive an automatic parking signal; a detector configured to detect at least one of an object or whether the vehicle is in contact with the object; and a controller configured to control the brake device based on a detection result of the detector and the first setting value, and to control the brake device based on the detection result and the second setting value when the automatic parking signal is received.