Control method for self-moving device and self-moving device

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Solution Overview

Problem

Existing image identification algorithms for sweeping robots require high hardware requirements, limiting their application range due to the need for GPUs and NPUs, which increases costs and reduces versatility.

Innovation Solution

Implement a control method using a small network detection model and model compression techniques to reduce computing resources, allowing the self-moving device to identify objects efficiently without the need for GPUs and NPUs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If traditional image identification algorithms are used, then identification accuracy is improved, but hardware requirements increase

Engineering Contradiction:
Improveimage identification accuracyVSAvoidhardware requirements
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces expensive, complex hardware (GPU+NPU) with a simpler, more affordable processor configuration that can still perform image identification tasks. The solution uses a lightweight neural network model that runs on standard microcontrollers or low-power processors, making the system more accessible and cost-effective while maintaining adequate identification accuracy for practical applications.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent transforms the image identification system by changing the parameters of the neural network model - reducing model complexity, decreasing the number of layers and parameters, and optimizing for embedded deployment. This parameter transformation allows the system to achieve acceptable identification accuracy with significantly reduced computational requirements, resolving the contradiction between accuracy and hardware demands.

Inventive Principle:
Principle #35Parameter changes

2Productivity

If GPU and NPU are added to improve identification capability, then object recognition performance is improved, but device cost and complexity increase

Engineering Contradiction:
Improveobject identification performanceVSAvoidprocessing unit configuration
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent extracts and removes the requirement for specialized processing units (GPU and NPU) from the system architecture. By designing a lightweight neural network that can execute on standard processors, the solution eliminates the need for these complex, expensive components while preserving the core functionality of object identification, thus improving productivity without increasing device complexity.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent substitutes the mechanical/hardware-based solution (adding GPU and NPU components) with a software-based solution (optimized lightweight neural network). This substitution replaces the need for additional physical processing units with algorithmic optimizations and efficient code implementation, achieving better identification performance without increasing hardware complexity.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Speed

If high-performance processors are used, then computing speed is improved, but power consumption and heat generation increase

Engineering Contradiction:
Improvecomputing speedVSAvoidpower consumption
Core Design Contradiction:
SpeedVSUse of energy by moving object

Solution Approach 1:

The patent applies partial action by implementing a neural network with just enough complexity to achieve practical identification accuracy, rather than using a full-scale high-performance model. This partial implementation provides sufficient computing speed for real-time applications while consuming significantly less power, as the model processes images with fewer computational operations and smaller data throughput.

Inventive Principle:
Principle #16Partial or excessive action

Solution Approach 2:

The patent introduces dynamic adaptivity into the system by implementing adjustable inference parameters, optional preprocessing steps, and configurable model variants. This allows the computing speed and power consumption to be dynamically balanced based on operational requirements, enabling the system to operate efficiently across different scenarios without requiring always-maximal processing power.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12478241B2Control method for self-moving device and self-moving device
Publication Date: 2025.11.25 DREAM INNOVATION TECH (SUZHOU) CO LTD
  • US12478241B2 patent drawing
  • US12478241B2 patent drawing
  • US12478241B2 patent drawing

AI summary

A control method for a self-moving device, includes: obtaining edge information of a working area where the self-moving device is located; obtaining an environment image captured while moving; obtaining access door information based on the environment image; and dividing independent areas within the working area based on the access door information and the edge information. The self-moving device includes a movement component, a movement driving component, an image identification component and a control component.