Vehicle Sonar Distance Validation for Target Switching Errors
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Solution Overview
Problem
Existing sonar systems face challenges in maintaining accurate detection of target objects due to errors in distance measurement values and target switching, leading to decreased detection accuracy.
Innovation Solution
A processing apparatus and method that utilizes a filter processing system to validate distance measurement values and determine target switching based on sensor movement and past measurement values, ensuring accurate calculation of target coordinates and preventing erroneous detections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If distance measurement values are continuously acquired from the sensor, then the detection coverage is improved, but the detection accuracy decreases due to errors in distance measurement values and target switching
Solution Approach 1:
The system performs preliminary validation of distance measurement values by comparing current measurements with past measurements and sensor movement data before using them for target detection. This preliminary action filters out erroneous measurements and prevents target switching errors, thereby maintaining detection accuracy while preserving continuous detection coverage
Solution Approach 2:
The system introduces an intermediary validation mechanism that acts as a mediator between the sensor and the target detection system. This intermediary layer validates distance measurement values by checking consistency with past measurements and sensor movement information, blocking erroneous data from affecting detection accuracy while allowing continuous operation
2Productivity
If the sensor moves to detect multiple targets, then the detection coverage is improved, but the target position calculation becomes erroneous due to target switching
Solution Approach 1:
The system uses feedback by continuously comparing current distance measurements with past measurements and sensor movement data. This feedback mechanism identifies when target switching has occurred and prevents erroneous position calculations, allowing the sensor to move and detect multiple targets while maintaining position accuracy
Solution Approach 2:
The system performs preliminary validation to detect target switching before it causes position calculation errors. By checking consistency between distance measurements and sensor movement in advance, the system prevents erroneous target position calculations while maintaining the ability to track multiple moving targets
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
Enhances the accuracy of target object detection by filtering out invalid distance measurements and identifying target switching, thereby improving the reliability of sonar systems in vehicles.
Implementation Method 1
sonars are configured to be mounted on vehicles and the like to detect target objects
Data Source
AI summary
A processing apparatus according to an embodiment of the present disclosure includes: a processor; and a memory having instructions that, when executed by the processor, cause the processor to perform operations comprising: inputting a distance measurement value and a past distance measurement value, the distance measurement value indicating a distance to a target object measured by a sensor at a first time point, the past distance measurement value indicating a distance to the target object measured by the sensor at one or more time points earlier than the first time point; determining whether the distance measurement value is valid or invalid based on the distance measurement value, the past distance measurement value, and movement information of the sensor; and outputting a control signal input to a control circuitry of a vehicle on which the sensor is mounted based on a result of the determination.