Multi-Radar Object Detection Performance Decline Determination

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Solution Overview

Problem

Existing object detection systems, such as radar devices, require prior knowledge of a threshold to determine performance decline, making it difficult to distinguish between declines caused by dirt or environmental conditions like mountain or snowy roads.

Innovation Solution

A system comprising multiple object detection devices with a control device that calculates a representative value of reception strength and determines performance decline based on these values, eliminating the need for threshold-based determination.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a single radar device determines performance decline based on a threshold, then the determination process is simple, but it is difficult to distinguish between performance decline caused by dirt and that caused by road conditions

Engineering Contradiction:

Improveperformance decline determination processVSAvoidcause identification accuracy

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The system segments the performance decline analysis by comparing multiple radar devices independently. Each radar device's reception strength is evaluated separately, and by comparing results across multiple devices, the system can identify whether performance decline is localized to a specific device (suggesting dirt) or affects all devices (suggesting road conditions).

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The control device acts as an intermediary that collects and compares reception strength data from multiple radar devices. This intermediary comparison mechanism enables differentiation between device-specific issues and environmental factors without complicating individual radar operations.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If multiple object detection devices are used to compare data, then performance decline determination is less affected by threshold appropriateness, but the system complexity increases

Engineering Contradiction:

Improveperformance decline determination stabilityVSAvoidsystem structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

Multiple radar devices perform the same detection function simultaneously, and their results are universally compared by the control device. This multi-functional approach allows the system to determine performance decline reliability through comparison without requiring each device to have different or specialized functions.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The control device merges the reception strength data from multiple radar devices into a unified comparison analysis. By combining information from multiple sources, the system achieves more reliable performance decline determination while keeping individual device structures simple.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS12211285B2Object detection system and object detection method

Publication Date: 2025.01.28 MITSUBISHI ELECTRIC CORP

AI summary

The present disclosure includes a multiple of object detection devices including a transmission system that transmits a transmission wave and a receiving system that receives a reflected wave from an object, and a control device into which detected information is input from each of the multiple of object detection devices, wherein the control device includes a representative value calculation unit that calculates a representative value of reception strength of the reflected wave obtained by each of the multiple of object detection devices detecting a peripheral object at regular intervals, and a performance decline determination unit that determines that a decline in performance of the multiple of object detection devices has occurred.