Wireless Gas Sensor Beacon Protocol for RF Traffic Reduction

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Solution Overview

Problem

Existing access control systems in secured areas are vulnerable to attacks and aesthetically unappealing, requiring expensive security personnel for credential verification and often relying on expensive and vulnerable automated equipment.

Innovation Solution

Implementing a wireless access control system with augmented reality that uses gas detectors and a monitoring panel with radio frequency transceivers, employing a beacon-based data transmission method to reduce network traffic and increase capacity, and encrypting communications for security, allowing for efficient and secure access control without the need for physical access control hardware at entry points.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If physical access control devices (keypads, card readers, locks) are installed at entry points, then access control functionality is provided, but the system becomes vulnerable to vandalism, signal interference, and aesthetic deterioration

Engineering Contradiction:
Improveaccess control system reliabilityVSAvoidvulnerability to vandalism and signal interference
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces physical access control devices (keypads, card readers, mechanical locks) with a wireless access control system using RF transceivers and gas detectors. The system uses wireless communication to transmit access control signals and gas detection data, eliminating the need for physical hardware at entry points and thereby removing vulnerability to vandalism and signal interference.

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

Solution Approach 2:

The patent introduces gas detectors as intermediary devices that wirelessly communicate access control information and gas detection data to a central monitoring station. The gas detectors act as mediators between the access control system and the monitoring station, enabling remote monitoring without requiring physical access control hardware at entry points.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If wireless gas sensors are deployed in large numbers to monitor secured areas, then comprehensive monitoring coverage is achieved, but RF network traffic increases and network capacity is exceeded

Engineering Contradiction:
Improvemonitoring coverageVSAvoidnetwork capacity
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent implements periodic action by having gas detectors transmit data only at specific intervals rather than continuously. The system uses periodic polling where the monitoring station requests data from gas detectors at predetermined time intervals, and gas detectors transmit only when gas levels exceed threshold values or during scheduled updates, thereby reducing overall RF network traffic while maintaining monitoring coverage.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The patent applies self-service by having gas detectors autonomously determine when to transmit data based on local gas level conditions. Gas detectors monitor their own sensor readings and only initiate transmissions when necessary (e.g., when gas levels exceed thresholds or during scheduled periodic updates), rather than continuously broadcasting, thereby reducing network traffic while maintaining effective monitoring.

Inventive Principle:
Principle #25Self-service

3Reliability

If continuous data transmission from all gas sensors is implemented, then real-time monitoring is maintained, but network traffic and energy consumption increase

Engineering Contradiction:
Improvereal-time monitoring capabilityVSAvoidenergy consumption
Core Design Contradiction:
ReliabilityVSLoss of energy

Solution Approach 1:

The patent implements periodic action by establishing predetermined time intervals for data transmission rather than continuous monitoring. Gas detectors transmit data periodically at scheduled intervals or when triggered by significant gas level changes, reducing energy consumption while maintaining effective real-time monitoring capability through timely updates.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The patent uses feedback mechanisms where gas detectors continuously monitor local gas levels and automatically trigger data transmissions only when conditions require it (e.g., when gas levels exceed threshold values). This feedback-based approach allows the system to maintain real-time monitoring awareness while minimizing energy consumption by keeping devices in low-power states during normal conditions.

Inventive Principle:
Principle #23Feedback

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

This solution enhances security and reduces costs by eliminating the need for physical access control devices, improving network capacity by up to 10 times, and ensuring efficient and secure access control through reduced network traffic and encryption, while maintaining aesthetic appeal.

Implementation Method 1

a wireless transceiver that receives the data from the gas detector

Methodology Applied
Scientific EffectRadio frequency transmission: Electromagnetic Induction

Data Source

PatentEP3189505B1Schema to reduce RF traffic and increase the network capacity for large wireless gas sensor networks
Publication Date: 2020.02.26 HONEYWELL INTERNATIONAL INC
  • EP3189505B1 patent drawingFigure 1

AI summary

An apparatus including a wireless transceiver of the gas monitoring processor that receives gas readings and a plurality of gas detectors at different locations within the predetermined geographical area that each periodically measure a current gas level at a respective location of the gas detector wherein for each gas reading of the gas detector, a processor of the gas detector compares the current gas level with a previously measured gas level, if the current gas level is different than the previous gas level, then the gas detector wirelessly transmits a message including the current gas level to the wireless transceiver of the gas monitoring processor and if the current gas level is unchanged from the previous gas level, then the gas detector transmits a beacon message to the wireless transceiver of the gas monitoring processor as an indication that the current gas level is unchanged from the previous gas level.