Unified LIDAR RADAR Sensor Processing for Object Detection

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Solution Overview

Problem

Current sensor systems for autonomous vehicles, which rely on a combination of LIDAR and RADAR sensors, face challenges in effectively processing and combining signals from both technologies to enhance object detection and navigation, particularly under uncertain conditions such as adverse weather or when encountering non-metallic objects.

Innovation Solution

A sensor system that integrates LIDAR and RADAR sensors, with a processor capable of receiving and processing signals from both types of sensors together, allowing for the generation of collective output signals that improve environmental sensing and object detection, thereby enhancing vehicle safety and performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If LIDAR and RADAR sensors are used separately, then each sensor type can detect specific objects, but the overall object detection accuracy and reliability are limited under uncertain conditions

Engineering Contradiction:
Improveobject detection accuracyVSAvoidsensor system reliability
Core Design Contradiction:
Measurement precisionVSReliability

Solution Approach 1:

The patent combines LIDAR and RADAR sensors into a unified sensor system where both sensor types operate simultaneously and their signals are processed together. The LIDAR sensor detects objects using laser light while the RADAR sensor detects objects using radio waves, and both detection results are merged to improve overall detection accuracy and reliability under various environmental conditions.

Inventive Principle:
Principle #5Merging (Combining)

2Adaptability or versatility

If separate processing algorithms are used for LIDAR and RADAR signals, then each sensor type can be optimized independently, but the system complexity increases

Engineering Contradiction:
Improvesensor optimization flexibilityVSAvoidprocessing system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent employs a single processor that is capable of processing both LIDAR and RADAR signals using a unified processing algorithm. This universal processor performs multiple functions by receiving signals from both sensor types and applying the same algorithmic approach to both, thereby reducing system complexity while maintaining adaptability through the flexibility of the processing algorithm itself.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Device complexity

If LIDAR and RADAR signals are processed separately, then processing can be simplified, but the robustness and accuracy of object detection are reduced

Engineering Contradiction:
Improveprocessing algorithm complexityVSAvoidobject detection accuracy
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The patent merges the processing of LIDAR and RADAR signals into a single unified processing step performed by one processor. By combining the signals and processing them together using a single algorithm, the system achieves improved object detection accuracy and robustness while keeping the processing complexity manageable through the use of a unified approach rather than separate complex processing chains.

Inventive Principle:
Principle #5Merging (Combining)

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 integrated system improves the robustness and accuracy of object detection, reduces uncertainty in sensor data, and enables the use of a unified processing algorithm, leading to enhanced safety and performance in navigating through diverse environments.

Implementation Method 1

one or more LIDAR sensors can be configured to output signals

Methodology Applied
Scientific EffectLIDAR: LIDAR

Implementation Method 2

one or more RADAR sensors can be configured to output signals

Methodology Applied
Scientific EffectRADAR: Radar

Data Source

PatentUS9921307B2Combined RADAR sensor and LIDAR sensor processing
Publication Date: 2018.03.20 TOYOTA JIDOSHA KK
  • US9921307B2 patent drawing
  • US9921307B2 patent drawing
  • US9921307B2 patent drawing

AI summary

Arrangements related to sensing systems and methods are described. A sensing system can include one or more LIDAR sensors. The one or more LIDAR sensors can be configured to output signals. The sensing system can include one or more RADAR sensors. The one or more RADAR sensors can be configured to output signals. The sensing system can include a processor. The processor can be operatively connected to receive signals output by the LIDAR sensor(s) and the RADAR sensor(s). The processor can be configured to process signals received from both the LIDAR sensor(s) and the RADAR sensor(s) together. In some arrangements, the LIDAR sensor(s) and the RADAR sensor(s) can be located within the same housing. In one or more arrangements, the LIDAR sensor(s) and/or the RADAR sensor(s) can be configured as a phased array. In one or more arrangements, the sensing system can be used in connection with a vehicle.