Diffusion Trend Analysis via Multi-Device Time Synchronization

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Solution Overview

Problem

Existing monitoring systems for diffusible substances, such as harmful gases, suffer from inaccurate diffusion monitoring due to the lack of time synchronization among multiple devices, leading to incomplete and unreliable detection of diffusion trends.

Innovation Solution

A system comprising a network of devices connected via a 5G network with synchronized time delays, allowing for accurate calibration and analysis of diffusible substance data across a unified time domain, enabling comprehensive diffusion trend determination and response planning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single device or a set of devices with the same type is used to detect the diffusible substance, then the device complexity is reduced, but the measurement precision and reliability of diffusion monitoring deteriorates due to limited monitoring coverage and inability to achieve accurate diffusion trends

Engineering Contradiction:
Improvedevice complexityVSAvoiddiffusion monitoring precision
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The system segments the monitoring task by deploying multiple detection devices at different locations rather than using a single device. Each device independently monitors its local area, and the server collects and integrates data from all devices to reconstruct the overall diffusion trend, achieving both simplified individual device design and high overall monitoring precision

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system transitions from single-point monitoring to multi-dimensional spatial monitoring by distributing devices across different locations. The server uses time-synchronized data from multiple spatial points to calculate diffusion direction, speed, and concentration gradients, adding spatial dimensionality to the monitoring capability

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Measurement precision

If multiple devices with different types are applied to achieve comprehensive monitoring, then the measurement precision improves, but the device complexity and difficulty of time synchronization increases

Engineering Contradiction:
Improvediffusion monitoring precisionVSAvoiddevice complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The system employs devices with unified functionality for diffusion monitoring rather than integrating multiple different types of devices. Each device is designed to perform the same core function of detecting diffusible substances, which simplifies the overall system architecture while maintaining comprehensive monitoring capability through coordinated operation of identical devices

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

Solution Approach 2:

The system changes the operational parameters of devices to achieve time synchronization. By adjusting device clocks to a unified time standard and synchronizing data collection intervals, the system enables accurate temporal correlation of measurements from multiple devices without increasing device complexity

Inventive Principle:
Principle #35Parameter changes

3Area of stationary object

If multiple devices are used without time synchronization, then the monitoring coverage increases, but the reliability of diffusion monitoring result deteriorates due to inaccurate diffusion trend determination

Engineering Contradiction:
Improvemonitoring coverageVSAvoiddiffusion monitoring reliability
Core Design Contradiction:
Area of stationary objectVSReliability

Solution Approach 1:

The server implements a feedback mechanism that collects time-stamped data from all devices, compares timestamps to detect synchronization deviations, and adjusts subsequent data collection timing accordingly. This feedback loop ensures that data from multiple devices remain temporally correlated, maintaining high reliability across expanded monitoring coverage

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system performs preliminary time synchronization calibration before actual diffusion monitoring begins. Devices are pre-configured with synchronized clocks and coordinated data collection schedules, ensuring that when monitoring starts, all devices are already time-aligned and ready to produce reliable correlated measurements across the entire monitoring area

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP4018189B1Systems for analyzing diffusion trend of diffusible substance
Publication Date: 2025.06.25 ZHEJIANG DAHUA TECH CO LTD
  • EP4018189B1 patent drawingFigure 1A
  • EP4018189B1 patent drawingFigure 1B~1C
  • EP4018189B1 patent drawingFigure 1D

AI summary

Systems (100) and methods for analyzing a diffusion trend of a diffusible substance. The systems may obtain a plurality of sets of reference information relating to the diffusible substance from a plurality of devices (110) respectively, each of the plurality of sets of reference information at least including a time point when a corresponding device (110) detects the diffusible substance and a location where the device (110) detects the diffusible substance. The plurality of sets of reference information may correspond to a same or a substantially same time domain. The systems (100) may determine the diffusion trend of the diffusible substance based on the plurality of sets reference information.