Intelligent Door Control System for Fire Escape Automation

Solution Overview

Problem

Traditional mechanical doors are unable to automatically open during a fire, posing a risk to escape and rescue, and intelligent door systems with temperature sensors can introduce security risks by being manipulated from outside.

Innovation Solution

An intelligent door control system with sensors on both sides of the door to detect indoor and outdoor environmental parameters, such as temperature and smoke concentration, and a controller to determine if a fire is present, automatically opening the door to facilitate escape while preventing unauthorized opening.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If a temperature sensor is installed on a traditional mechanical door to enable automatic opening, then the door can open automatically when temperature reaches a set value, but the door can be opened unauthorized by heating the sensor from outside

Engineering Contradiction:

Improveautomatic door openingVSAvoidsecurity

Core Design Contradiction:

Extent of automationVSReliability

Solution Approach 1:

The door system is divided into two separate units: an indoor door with an indoor temperature sensor, and an outdoor door with an outdoor temperature sensor. The controller compares temperatures from both sensors to determine whether to open the door, preventing unauthorized opening by external heating while maintaining automatic opening capability for genuine fire emergencies.

Inventive Principle:

Principle #1Segmentation

2Extent of automation

If a temperature sensor is installed on a traditional mechanical door to enable automatic opening, then the door can open automatically when temperature reaches a set value, but the door may open and let fire enter the room when a fire occurs outside

Engineering Contradiction:

Improveautomatic door openingVSAvoidfire entry

Core Design Contradiction:

Extent of automationVSObject-affected harmful factors

Solution Approach 1:

The door system is divided into two separate units: an indoor door with an indoor temperature sensor, and an outdoor door with an outdoor temperature sensor. The controller compares temperatures from both sensors to determine whether to open the door, preventing unauthorized opening by external heating while maintaining automatic opening capability for genuine fire emergencies.

Inventive Principle:

Principle #1Segmentation

3Device complexity

If the door handle position is kept high on a traditional mechanical door, then the door structure is simple, but elderly or disabled people and children cannot open the door easily

Engineering Contradiction:

Improvedoor structureVSAvoiddoor opening accessibility

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

The manual door handle operation is replaced with an automatic door opening mechanism controlled by temperature sensors and a controller. When the indoor temperature sensor detects fire conditions, the controller automatically actuates the door opening mechanism, eliminating the need for manual operation and making the door accessible to everyone including elderly, disabled people, and children.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

4Device complexity

If the door is made non-intelligent (mechanical only), then the door structure is simple and reliable, but the door cannot open automatically when a fire occurs indoors

Engineering Contradiction:

Improvedoor structureVSAvoidfire escape capability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The manual door handle operation is replaced with an automatic door opening mechanism controlled by temperature sensors and a controller. When the indoor temperature sensor detects fire conditions, the controller automatically actuates the door opening mechanism, eliminating the need for manual operation and making the door accessible to everyone including elderly, disabled people, and children.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

Ensures safe and secure automatic door opening during a fire, distinguishing between indoor and outdoor fire situations to prevent false triggers and ensure timely evacuation.

Implementation Method 1

a first sensor arranged on a door body of an intelligent door to sense an indoor parameter of ambient environment at an indoor side of the door body

Methodology Applied

Scientific EffectTemperature sensing:

Implementation Method 2

a first sensor arranged on a door body of an intelligent door to sense an indoor parameter of ambient environment at an indoor side of the door body

Methodology Applied

Scientific EffectSmoke detection:

Implementation Method 3

a second sensor arranged on an outdoor side of the intelligent door to sense an outdoor parameter of ambient environment at outdoor side of the door body

Methodology Applied

Scientific EffectTemperature sensing:

Implementation Method 4

a second sensor arranged on an outdoor side of the intelligent door to sense an outdoor parameter of ambient environment at outdoor side of the door body

Methodology Applied

Scientific EffectSmoke detection:

Data Source

PatentUS11352826B1Intelligent door control system and method

Publication Date: 2022.06.07 SHANGHAI IMILAB TECHNOLOGY CO LTD

AI summary

An intelligent door control system and method is provided. The intelligent door control method includes the following steps: receiving an ambient temperature inside and outside a door body of the intelligent door through a first sensor and a second sensor which are respectively installed inside and outside the door body of the intelligent door; comparing the ambient temperature inside the door with a preset first temperature threshold, and comparing the ambient temperature outside the door with a preset second temperature threshold; automatically controlling the intelligent door according to whether there is a living body inside the intelligent door, and comparison results of the ambient temperatures inside and outside the door body with the first and second temperature thresholds respectively.