Front Ultrasonic Sensor Waveform Control for Vehicle Interference Reduction
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Solution Overview
Problem
Front ultrasonic sensors in vehicles constantly driven can interfere with each other, leading to reduced performance of parking assistance systems due to mutual noise interference, and existing solutions require driver operation to activate the sensors, which is inconvenient and increases the risk of accidents.
Innovation Solution
A system and method for automatically controlling the transmission waveform output of front ultrasonic sensors through image analysis, adjusting the confidence level threshold based on weather conditions, and controlling the reception amplification factor to minimize interference and misrecognition of obstacles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If front ultrasonic sensors are constantly driven to provide continuous obstacle detection, then driving convenience and safety are improved, but interference with other vehicles increases due to mutual noise
Solution Approach 1:
The system controls the front ultrasonic sensor to operate in periodic intervals rather than continuously. The control unit determines appropriate transmission intervals based on vehicle speed and distance information, allowing the sensor to transmit ultrasonic waves only when necessary for obstacle detection, thereby reducing interference with other vehicles while maintaining detection reliability
Solution Approach 2:
The system dynamically adjusts the transmission waveform output of the ultrasonic sensor based on real-time driving conditions such as vehicle speed and detected distance. By making the transmission dynamic rather than static/continuous, the system optimizes detection effectiveness while minimizing harmful interference to surrounding vehicles
2Object-generated harmful factors
If driver operation is required to activate front ultrasonic sensors, then interference with other vehicles is reduced, but driving convenience decreases and accident risk increases
Solution Approach 1:
The system enables the front ultrasonic sensor to operate autonomously without requiring driver activation. The control unit automatically determines when transmission is needed based on vehicle speed and distance information from image recognition, making the system self-regulating and eliminating the need for manual driver operation while maintaining reduced interference
Solution Approach 2:
The system uses feedback from image recognition data and vehicle speed information to automatically control sensor transmission. This closed-loop control allows the system to self-adjust transmission timing based on actual driving conditions, providing both convenience and interference reduction
3Measurement precision
If image analysis confidence level threshold is kept high to reduce misrecognition, then false alarms decrease, but obstacle detection reliability lowers in poor weather conditions
Solution Approach 1:
The system dynamically adjusts the confidence level threshold based on weather conditions. In poor weather (rain, snow, fog), the threshold is lowered to maintain detection reliability, while in clear conditions, a higher threshold reduces false alarms. This dynamic adjustment optimizes performance across varying environmental conditions
Solution Approach 2:
The system changes the confidence level parameter according to detected weather conditions. By modifying this critical parameter based on environmental context, the system maintains both accuracy and reliability across different operating conditions, preventing both false alarms and missed detections
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 continuous operation of front ultrasonic sensors without driver intervention, reducing interference with other vehicles and improving reliability in various weather conditions, thus enhancing driving safety and convenience by minimizing false alarms and ensuring accurate obstacle detection.
Implementation Method 1
the front ultrasonic sensor may be mounted on the front bumper of the vehicle and detect a distance from an object within a predetermined distance (or a range that the ultrasonic sensor is able to detect) when the vehicle is moved forward
Implementation Method 2
detect a distance from an object within a predetermined distance
Implementation Method 3
an image reception unit receiving vehicle front image data; a feature extraction unit extracting a feature map for each pixel by inputting the vehicle front image data to a pre-stored network
Data Source
AI summary
Provided are a system and a method for drive control of front ultrasonic sensors, which may automatically control a waveform output from the front ultrasonic sensor detecting the presence or absence of an obstacle in front of a vehicle to prevent the sensor from acting as an interference source for another vehicle even when the sensor is constantly driven.