Smoke detectors, also called smoke alarms, are used to prevent fires by monitoring the concentration of smoke. They will appear in various places or spaces where people work and live, including civil aircraft of course. Our aircraft's passenger cabins, cargo compartments and electronic equipment compartments will use smoke detectors for fire detection.
So what kind of evolution has this little hero happened since its birth?
"Butter Sentry"
In 1902, a British engineer named George Darby invented the "Butter Sentry", the predecessor of the modern smoke alarm. Its structure is simple: two electric boards with a piece of butter sandwiched between them. When smoke rises, they will melt the butter, causing the two electric boards to contact each other to form a path, which will trigger an alarm.
It is not so much detecting smoke as it is detecting temperature. This is a very clever design. Unfortunately, it also has many drawbacks: First, it is easy to false alarms. In the hot summer, the alarm may ring non-stop; moreover, the installation of butter is very inconvenient, and it will Drops are everywhere.
"Gas Monitoring Room"
It was not until 1939 that a Swiss physicist, Walter Jaeger (Walter Jaeger) accidentally invented a real smoke detector. His initial plan was to design an alarm capable of detecting gas and poisonous gas for the mine. In order to create a detector that can sense changes in air composition, he designed an "ionization chamber" that uses radioactive materials to ionize the air in this chamber into various suspended ions. These ions can connect to the circuits on both sides to keep the current at a stable level.
Jaeger began to experiment with gas. The frustrating thing is that the gas he added next to the detector has reached a lethal amount, but the detector still has nothing to do with it. If there is a gas leakage accident, when it sounds the alarm, the people around may be cold.
White sighed, unwilling, but unable to do anything. Tired, he pulled a chair and sat down, started smoking, and suddenly the ringing sounded loudly. Later, he did a series of experiments and found that the smoke did not combine with air ions. They only interfered with the flow of ions, but the effect was still the same: ions Cannot flow freely, thus changing the current in the entire path.
The picture below is an ionization smoke detector located on B737
"The Little Prince of Optoelectronics"
The photoelectric smoke detector is composed of an infrared light emitting tube, an infrared sensor tube and a dark room. In the absence of smoke, the light of the infrared light-emitting tube cannot reach the infrared light sensor tube. When smoke enters a small dark room, these small smoke particles scatter the light emitted by the infrared light-emitting tube, causing part of the light to be received by the infrared sensor tube. , And converted into an electrical signal, the detection circuit amplifies this electrical signal, when the alarm point is reached, the detector enters an alarm state.
At present, there is a dual-band photoelectric smoke detector. It has two emission sources, one is infrared light source and the other is blue light source. Smoke, haze, and fog can be distinguished by different reflected ions of different wavelengths.
The picture below shows the photoelectric smoke detectors located on B737 and B787
"Visible" smoke detector
Commonly used sensors need to send out alarm signals when the fire is strong in a large space, and it is difficult to achieve extremely early detection and alarm of the fire. With the widespread application of video surveillance equipment and the rapid development of image processing technology, video smoke detectors that use image processing algorithms to identify smoke have emerged.
The extraction of suspicious areas of smoke, smoke color measurement, smoke energy monitoring measurement, smoke structure similarity measurement, and background model establishment are used to check whether smoke is generated.
Write at the end
Smoke detectors monitor the occurrence of smoke and fire alarms, so that the crew can detect the fire alarms in the first place and take corresponding actions. Therefore, the usual maintenance and cleaning of smoke detectors will help reduce the failure rate of the equipment, reduce false alarms, and enhance airworthiness.
The global Smoke Detector market was valued at 2431.84 Million USD in 2020 and will grow with a CAGR of 3.35% from 2020 to 2027, based on our Researcher newly published report.The prime objective of this report is to provide the insights on the post COVID-19 impact which will help market players in this field evaluate their business approaches.
Also, this report covers market segmentation by major market verdors, types, applications/end users and geography(North America, East Asia, Europe, South Asia, Southeast Asia, Middle East, Africa, Oceania, South America).Download FREE Sample of this Report @ https://www.statsmarketresearch.com/download-free-sample/6563403/global-regional-smoke-detector-2021-2027-123The global market is dominated by few players like BRK Brands, Kidde, Honeywell Security, Tyco, Johnson Controls, Halma, Hochiki, Sprue Aegis, Universal Security Instruments, Siemens, Ei Electronics, Nohmi Bosai and Panasonic etc.
Especially in North America and Europe, it is dominated by few players.In China, there are lots of players manufacturing smoke alarm products, but most of smoke alarm products are low-end products, low technology content, low price and fierce competition, like Gulf Security Technology, Shanying Fire, Forsafe, D Group International and Shenzhen Gabel Electronics etc.The high-end market is dominated by the foreign brands.
North America and Europe are dominating the global smoke alarm market, due to the reasonably developed economy and a group of customers increasing steadily.
Asia-Pacific will play a more and more important role in future, especially the rapidly growing demand from China, India and Southeast Asia countries.By Market Verdors:BRK BrandsKiddeHoneywell SecurityJohnson ControlsJohnson ControlsHalmaHochikiFireAngel Safety Technology GroupUniversal Security InstrumentsSiemensEi ElectronicsNohmi BosaiPanasonicX-SENSESmartwaresHekatronNestBusch-jaegerGulf Security TechnologyNittanShanying FireForsafeD Group InternationalShenzhen Gabel ElectronicsBy Types:Photoelectric Smoke AlarmsIonization Smoke AlarmsCombination Smoke AlarmsBy Applications:Home Smoke AlarmPublic Places Smoke AlarmKey Indicators AnalysedMarket Players & Competitor Analysis: The report covers the key players of the industry including Company Profile, Product Specifications, Production Capacity/Sales, Revenue, Price and Gross Margin 2016-2027 & Sales with a thorough analysis of the market?s competitive landscape and detailed information on vendors and comprehensive details of factors that will challenge the growth of major market vendors.Global and Regional Market Analysis: The report includes Global & Regional market status and outlook 2016-2027.
With detailed analysis by types and applications.Market Trends: Market key trends which include Increased Competition and Continuous Innovations.Opportunities and Drivers: Identifying the Growing Demands and New TechnologyPorters Five Force Analysis: The report provides with the state of competition in industry depending on five basic forces: threat of new entrants, bargaining power of suppliers, bargaining power of buyers, threat of substitute products or services, and existing industry rivalry.Key Reasons to PurchaseTo gain insightful analyses of the market and have comprehensive understanding of the global market and its commercial landscape.Assess the production processes, major issues, and solutions to mitigate the development risk.To understand the most affecting driving and restraining forces in the market and its impact in the global market.Learn about the market strategies that are being adopted by leading respective organizations.To understand the future outlook and prospects for the market.Besides the standard structure reports, we also provide custom research according to specific requirements.Reasons to Purchase Our Research Report:1.
