Cooking Robot Dust and Temperature Sensing for Fire Risk Control

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Solution Overview

Problem

Cooking robots face challenges in minimizing the risk of fires caused by fine dust and other foreign substances around the cooking device, as existing systems lack effective sensors and control mechanisms to adjust temperature and cooking time dynamically in response to changing danger levels.

Innovation Solution

A robot system equipped with a dust sensor and temperature sensor, which determines a danger level based on concentration and temperature values, allowing the controller to adjust the cooking device's temperature level and cooking time accordingly, and includes an alarm system to notify users of potential fire risks, ensuring safe operation by varying the cooking parameters and stopping the device when necessary.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the cooking device operates at high temperature levels to maintain cooking efficiency, then productivity is improved, but the risk of fire caused by fine dust increases

Engineering Contradiction:
Improvecooking efficiencyVSAvoidfire risk
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The system continuously monitors fine dust concentration and temperature using sensors, and dynamically adjusts cooking parameters based on real-time feedback. When fine dust concentration exceeds thresholds, the controller automatically reduces temperature or extends cooking time, creating a closed-loop control system that balances cooking efficiency with fire safety

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The controller modifies cooking parameters (temperature level and cooking time) based on detected fine dust concentration and temperature conditions. By changing these parameters dynamically rather than maintaining fixed high temperatures, the system achieves both productivity and safety

Inventive Principle:
Principle #35Parameter changes

2Reliability

If the system dynamically adjusts temperature and cooking time based on sensor data to ensure safety, then reliability is improved, but device complexity increases

Engineering Contradiction:
ImprovesafetyVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The controller serves multiple functions: it manages the cooking process, monitors fine dust concentration, reads temperature sensor data, determines danger levels, and adjusts cooking parameters. By consolidating these functions into a single control unit rather than separate systems, the patent improves reliability while minimizing the increase in device complexity

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

3Object-affected harmful factors

If the cooking time is extended to compensate for reduced temperature levels, then fire risk is minimized, but loss of time increases

Engineering Contradiction:
Improvefire riskVSAvoidcooking time
Core Design Contradiction:
Object-affected harmful factorsVSLoss of time

Solution Approach 1:

The system dynamically adjusts cooking time based on real-time conditions rather than using fixed time extensions. When fine dust concentration is moderate, the controller may only reduce temperature temporarily, extending cooking time slightly. When concentration is very high, the system may pause cooking until conditions improve. This dynamic approach minimizes unnecessary time loss while maintaining fire safety

Inventive Principle:
Principle #15Dynamics

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 system effectively minimizes the risk of fires by dynamically adjusting cooking parameters based on real-time sensor data, ensuring safe and reliable cooking operations while preventing unnecessary delays in cooking time when conditions are safe.

Implementation Method 1

a dust sensor disposed around the cooking device or on the robot to sense a concentration of foreign substances

Methodology Applied
Scientific EffectLight scattering: Scattering

Implementation Method 2

The temperature sensor may include an infrared sensor installed on the end effector

Methodology Applied
Scientific EffectInfrared radiation: Infrared Radiation

Data Source

PatentUS11358277B2Robot system and control method of the same
Publication Date: 2022.06.14 LG ELECTRONICS INC
  • US11358277B2 patent drawing
  • US11358277B2 patent drawing
  • US11358277B2 patent drawing

AI summary

A robot system includes a cooking device to heat a cooking container and having an operation unit configured to select a temperature level; a robot configured to control the temperature level and a cooking time of the cooking device; a dust sensor disposed around the cooking device or on the robot to sense a concentration of foreign substances; a temperature sensor disposed around the cooking device or on the robot to sense a temperature of the cooking container or the cooking device; and a controller configured to control the robot in a safe mode such that at least one of the temperature level and the cooking time is varied according to a danger level determined by a concentration sensing value of the dust sensor and a temperature sensing value of the temperature sensor.