Suction Smoke Sensor Segmentation for Spot Identification
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Solution Overview
Problem
The existing suction-type smoke sensing systems face challenges in accurately and rapidly detecting smoke and identifying fire occurrence spots, especially in segmented regions or large areas with varying distances between suction holes and smoke detectors, leading to delayed detection and difficulty in pinpointing fire sources.
Innovation Solution
A suction-type smoke sensing system with a photoelectric smoke sensor and a control unit that directly sucks air from each region to be inspected, using a sampling pipe connected to a photoelectric smoke sensor with a smoke sensing portion, a suction port, and a fitting port, allowing for precise smoke detection and rapid identification of fire occurrence spots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a large number of small regions are inspected using a networked air sampling pipe, then the coverage area is increased, but the detection site cannot be grasped easily and fire occurrence spot cannot be identified
Solution Approach 1:
The air sampling pipe is divided into multiple independent sampling sections, each equipped with its own smoke detector. This segmentation allows the system to cover large areas while maintaining the ability to identify specific detection sites and fire occurrence spots through the distributed detection network.
Solution Approach 2:
A controller is introduced as an intermediary device that receives detection signals from multiple smoke detectors and processes them to identify the specific location of smoke detection. This mediator enables the system to grasp detection sites and identify fire occurrence spots even when covering large areas with multiple sampling points.
2Area of stationary object
If the distance between suction hole and smoke detector is large, then the sampling coverage is improved, but smoke is diluted and detection accuracy decreases
Solution Approach 1:
The system employs multiple smoke detectors distributed at different locations along the air sampling pipe, with each detector positioned at an optimal distance from local suction holes. This local quality approach ensures that smoke detection accuracy is maintained in each region while still achieving broad sampling coverage through the distributed network.
3Area of stationary object
If the region to be inspected is large and distance between suction hole and smoke detector is large, then the inspection area is expanded, but detection time increases and early fire discovery becomes difficult
Solution Approach 1:
Multiple smoke detectors are pre-positioned at strategic locations along the air sampling pipe before inspection begins. This preliminary arrangement ensures that when smoke is generated, the nearest detector is already in position to detect it immediately, minimizing detection time even in large inspection areas.
Solution Approach 2:
The inspection area is divided into multiple zones with dedicated smoke detectors in each zone. This segmentation allows the system to monitor different regions simultaneously and independently, reducing the overall detection time by eliminating the need for sequential scanning of large areas.
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
Enables high-accuracy and rapid smoke detection, allowing for quick response and early fire discovery, even in areas with small smoke generation or complex geometries, by directly sampling air and using adjustable sensitivity settings.
Implementation Method 1
a photoelectric smoke sensor which detects smoke mixed in the air when the air in each region to be inspected is sucked
Implementation Method 2
a piping which sucks air in each region to be inspected
Data Source
AI summary
This invention relates to a suction-type smoke sensing system which detects smoke with high accuracy and rapidly and identifies a fire occurrence spot quickly.The system of the present invention is provided with a piping for sucking air in each region to be inspected, a photoelectric smoke sensor which, when air in each of the regions to be inspected is sucked, senses mixing of smoke in the air, and a control unit which sucks the air in the region to be inspected and is electrically connected to the photoelectric smoke sensor so as to receive and process a detection signal. The photoelectric smoke sensor is provided with a smoke sensing portion which senses the smoke in the sucked air, a suction port provided on the air inflow side of the smoke sensing portion, directly sucks the air in the region to be inspected, and fitted with a base end portion of a suction pipe which extends to the region to be inspected, and a fitting portion provided on the air outflow side of the smoke sensing portion and fitted with the end portion of the piping.