Multi-Channel Lidar Module with Single-Sensor Target Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing lidar sensor modules can only detect one target object on the light source optical axis, requiring multiple modules for comprehensive detection, which increases cost and space occupancy.
Innovation Solution
A multi-channel lidar sensor module with multiple light emitting units and a single light receiving unit, where the emitting units are disposed in vertical or horizontal directions, and the light receiving unit includes a condensing lens and image sensor to detect multiple objects using one image sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If one lidar sensor module is used to detect one target object, then the structure is simple, but multiple modules are required for comprehensive detection which increases cost and space occupancy
Solution Approach 1:
The light receiving unit is divided into multiple receiving regions (first receiving region and second receiving region) that can independently detect laser beams from different light emitting units. This segmentation allows a single module to perform multi-channel detection without requiring multiple separate modules, thereby improving detection coverage while avoiding increased device complexity
Solution Approach 2:
A single light receiving unit is designed to receive and process laser beams from multiple light emitting units simultaneously through its multiple receiving regions. This multi-functional design enables one lidar sensor module to perform comprehensive detection in multiple directions, eliminating the need for multiple specialized modules and reducing both cost and space requirements
2Adaptability or versatility
If multiple lidar sensor modules are used for comprehensive detection, then detection coverage is improved, but cost and occupied space increase
Solution Approach 1:
Multiple detection channels are merged into a single lidar sensor module by combining multiple light emitting units and multiple receiving regions within one module. This merging approach achieves comprehensive detection coverage while avoiding the cost and space penalties of using multiple separate modules, as all detection functions are integrated into one unified device
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 detection and measurement of multiple target objects using a single module, reducing costs and space requirements while maintaining accurate measurements across near and far distances.
Implementation Method 1
Light amplification by the stimulated emission of radiation (LASER) causes stimulated emission of light to amplify the light and irradiate a laser
Implementation Method 2
a collimating lens 12 configured to condense and convert the emitted laser beam into a parallel beam
Implementation Method 3
a condensing lens 21 configured to condense and convert a laser beam reflected by an obstacle (target object) A into a parallel beam
Implementation Method 4
an image sensor 22 configured to receive the laser beam condensed by the condensing lens 21
Implementation Method 5
A band pass filter 23 is disposed between the condensing lens 21 and the image sensor 22 to transmit only a reflected laser beam in a wavelength range emitted from the light emitting unit 10 and to not transmit beams in other wavelength ranges
Data Source
AI summary
Proposed is a multi-channel lidar sensor module that can measure at least two target objects using one image sensor. The multi-channel lidar sensor module may include at least one pair of light emitting units configured to emit laser beams and a light receiving unit formed between the at least one pair of emitting units and configured to receive at least one pair of reflected laser beams which are emitted from the at least one pair of light emitting units and reflected by target objects.