The smoke alarm is the sentinel of the fire protection system. It uses the photoelectric smoke or ion smoke detection technology to monitor the smoke concentration to achieve fire prevention. It can directly alarm when the fire is detected early, reminding the scene personnel to quickly alarm and evacuate in time. .
Recently, major fire accidents have occurred. These fire accidents have caused heavy casualties and the lessons are unforgettable!
In today's highly developed technology, is it possible to provide early warning of fires and reduce the loss of life and property caused by fire?
The smoke alarm is undoubtedly such a fire weapon!
So, what is the smoke alarm?
The smoke alarm is the sentinel of the fire protection system. It uses the photoelectric smoke or ion smoke detection technology to monitor the smoke concentration to achieve fire prevention. It can directly alarm when the fire is detected early, reminding the scene personnel to quickly alarm and evacuate in time. .
In practical applications, according to fire protection requirements, the installation of smoke detectors is dense, it is not convenient to route, and the construction cost is high; it is impossible to interact with people (including owners, security guards, fire brigades, etc.), there is risk of false alarms; Maintenance costs will increase.
Based on the emerging technologies in the IoT field such as NB-IoT/LoRa, the smart smoke adopts wireless communication, plug and play, no wiring, easy to install; low power consumption, battery standby time of more than 10 years, no need to change batteries frequently, effective Reduce maintenance costs. Nowadays, more and more families, nursing homes and other "nine small places" have become an effective technical means to prevent "small fires and deaths" disasters.
How much does the smoke alarm know?
According to the survey, about 77% of people have heard of the smoke alarm, the proportion of people who know the product is less than 7%, and about 16% have not heard of the product.
Only 6.7% thought that the smoke alarm was mostly used in personal areas.
More than half of the people think that there is no need to install smoke at home.
Does your home have a smoke alarm?
According to the analysis, 62% of the family fire mortality rate is derived from the installation of independent smoke detectors.
On December 4, 2017, in the "Notice on Recent Fire Accidents", it was clearly stated that if more than 10 people are staying, a separate fire alarm detector will be installed and a full-time administrator night inspection will be implemented.
Six brands of wisdom smoke
With the development of science and technology, the construction of “smart home†and “smart city†has gradually been put on the agenda. More and more wireless smoke alarm products have entered “smart homeâ€, bringing comfort, convenience and artistry. High experience. More and more wireless fire alarm systems have joined the “smart city†construction, and the city management platform has two-way inspections to locate the fire scene in real time. No matter where the product is in the fire, the city management platform can receive the alarm at the first time. Information, dispatch fire officers and soldiers to save in time, greatly protecting people's lives and property. At present, the smart smoke on the market is mainly based on wireless smoke detectors of NB-IoT and LoRa WAN communication technologies.
The rapid development of the Internet of Things puts higher demands on wireless communication technologies, and LPWAN, which is designed for low-bandwidth, low-power, long-distance, and large-scale connected Internet of Things applications, is also rapidly emerging. As two of the most promising low-power WAN communication technologies in the field of Internet of Things, the contest between NB-IoT and LoRa in fire protection applications has already begun.
IoT applications consider many factors such as node cost, network cost, battery life, data transfer rate (throughput rate), latency, mobility, network coverage, and deployment type. The same is true for applications in the field of fire protection. It can be said that no single technology can meet all the needs of IoT. At present, the smart smoke on the market is mainly based on wireless smoke detectors of NB-IoT and LoRa WAN communication technologies. With the rise of various smart cigarettes, the following six products focused on IoT solution providers are leading the industry with unique advantages.
First, one technology
Shenzhen Yide Technology Co., Ltd. is a high-tech enterprise specializing in the research, development, sales, operation and comprehensive solutions of Internet of Things technology, smart city and fire-fighting IoT system. It jointly launched the “Smart Smoke†with the West District of Shijiazhuang. Engineering construction, the first to apply NB-IoT technology to urban fire alarms, providing 24-hour fire protection for Shijiazhuang City. It has successfully landed in 15 small and medium-sized places represented by Runfeng Hardware City. The first batch of NB-IoT users has accumulated 6,000, and the overall project is expected to develop over 30,000.
Chad's intelligent smoke is supported by NB-IoT/LoRa technology, which requires no wiring, plug and play, and monitors fire conditions 24 hours a day. When the fire occurs, the smoke detector quickly senses the fire and triggers an alarm. Built-in NB-IoT chip, the fire alarm is delivered to the cloud platform through the base station within 0.2 milliseconds, and the fire location is notified to the owner, property management personnel, community responsible person and other related personnel by telephone, TTS voice broadcast and APP push form, and simultaneously started. Corresponding monitoring points, shooting live video to help confirm the fire, control the fire in the bud.
Second, gamma technology
Jiangsu Gamma Technology Co., Ltd. is a high-tech innovative enterprise specializing in the security field of “Internet of Things + Artificial Intelligenceâ€. It has taken the lead in developing a war-horse intelligent fire protection system based on NB-IoT, LoRaWAN and other new technologies nationwide. The residential area such as Yueda Xijiao Manor is implemented. The Internet of Things low-power narrowband NB-loT, short-range wireless communication NFC, super WIFI and other technologies are integrated into the industry leader of security systems.
The Woma smart smoke sensor developed by the company uses NB-IoT/LoRa WAN communication technology to use photoelectric detection, which has good radiation resistance. When the smoke enters the smoke detector, the smoke changes the light intensity perceived by the smoke sensor, and then triggers the alarm; Algorithm, safe and reliable, real-time monitoring, eliminating false positives and false negatives. With a lithium battery and a super capacitor, it works for a while even when the battery is dead.
Third, Tuobao Technology
Wuhan Topo Technology Co., Ltd. is committed to leading IoT products and system solutions. Its main products include TurbiotTM wide-area wireless IoT system and application solutions, microwave radar sensors and so on.
Turbotech's intelligent wireless smoke detection solution supports LoRAWAN standard, which is easy to deploy and can be connected to the alarm in real time. It can replace the independent smoke, which can solve the smoke installation or network alarm problem of the old building fire protection. Through the application of implementation in colleges, nursing homes, and old communities, the fire management level of smart cities is greatly improved, and the lives and property of the people are guaranteed.
Four or three fire communication
Shenzhen Sanhuo Communication Technology Co., Ltd. mainly operates NB-IoT applications, LoRa applications, DTU2G/3G/4G wireless data transmission terminals, industrial grade routers, etc., focusing on the application products of the Internet of Things industry and high-end wireless communication transmission equipment in the industrial field. R&D, production, promotion and service.
Sanhuo Communication NB-IoT smoke sensor is the sentinel of the fire protection system. It can detect smoke in real time. The sensor detects the smoke concentration exceeding the standard, sends the information to the background server, and starts the alarm bell, broadcast speaker and other related equipment. The server will automatically push the information to Relevant personnel and departments to achieve intelligent fire safety.
V. Settwell
Established in 2010, Ningbo Setwell Electronics Co., Ltd. is a high-tech enterprise integrating R&D, production and sales.
Combining the status quo of domestic fire protection and the needs and challenges of fire protection, fully utilizing the advantages of its own professional manufacturing smoke alarm, it is expected to launch LoRa intelligent wireless smoke, and promote the construction of “Internet of Things + Smart Fire†for the city. Made of high quality components combined with advanced electronics and sophisticated technology. Once the smoke concentration reaches the alarm set value, the detector will faithfully emit an audible and visual alarm signal to remind you to take effective measures immediately; or activate the linkage device to eliminate the dangerous situation and effectively avoid the occurrence of serious accidents such as fire, explosion and poisoning. Microprocessor control, high reliability, low false alarm; live sound and light alarm.
Sixth, Wei Chuan Technology
Shenzhen Weichuan Technology Co., Ltd. is a solution provider focusing on the Internet of Things low-power wide area network (LPWAN) and operation service platform. It independently developed Airnode patented technology to provide enterprise-class low-power network construction, equipment connection and data for enterprise customers. Transport and platform services.
The AN-102 is a smart wireless photo-electricity smoke detection alarm based on the LoRaWAN standard protocol. It adds wireless transmission and wireless networking functions based on the independent smoke alarm. The alarm has high sensitivity. Stable and reliable, easy to use and so on. The alarm mainly uses the infrared scattering principle to detect the fire. When there is smoke entering, the receiving tube signal is enhanced due to the scattering effect. When the smoke reaches the predetermined threshold, the alarm sounds an alarm, and the indicator light flashes quickly, making people early. Learn about the fire. The alarm information is reported to the cloud-connected alarm platform in real time through the LoRa network, which can replace the traditional smoke alarm to report information through wired means.
Smoke Detector Selection Guide
The use of gas and natural gas is essential in family life. However, once these gases leak during use, serious accidents will occur, endangering people's lives and property. At this time, the appearance of the smoke detector can effectively avoid this situation, it can detect the content of certain gases in the air in a timely and reliable manner, take effective measures to remedy, and adopt correct treatment and disposal methods to reduce leakage. The accident, and there are many brands of gas leak detection alarms on the market. How should the user choose? The following technology refers to the technical indicators and technical parameters, and gives you a brief overview of the aspects of the pre-selection. :
1, response time
(1) Response time: refers to the time interval from when the alarm is triggered to when the system displays the detected gas. It is the most basic indicator for measuring the functionality of an alarm system. An alarm must have the ability to detect and display the results in an appropriate manner in a timely manner.
(2) Alarm response: The alarm status interval is displayed from the alarm field alarm to the control center. It includes the delay of the alarm, the setup time of the communication, and the delay of the control system equipment (usually the sound and light display).
(3) Alarm confirmation time: From the alarm field sensing to the control center to confirm that the alarm is a real time interval. It includes the time spent on the alarm response and review process, such as live monitoring, remote reception time, and more. This process may also include the communication time used by the control system to issue alarms and related amounts of information to the higher level alarm center. In addition, the start-up time of the linkage can also be regarded as the response time. Such as the time interval from the detector's on-site alarm to the control linkage (such as closing the solenoid valve to cut off the air supply, and opening the exhaust fan, etc.). Usually the alarm response is very short. Therefore, in the specific inspection, it is advisable to measure the alarm confirmation time or the system response.
2. Detection area and detection sensitivity
(1) Detection area: a certain range of security system design. When the gas reaches the alarm concentration in this range, the detector detects in time and sends an alarm signal.
(2) Detection sensitivity: The detector's ability to sense gas leakage at the installation site is usually less than 25% of the different alarm concentrations of different gases. The semiconductor normal temperature sensor used in the gas alarm is superior to the conventional contact combustion sensor in that it does not require heating, so the component has the advantages of high sensitivity, fast response, low power consumption, long life, and the like. More extensive. In the actual test, the above two should be combined. The tester can use the lighter deflation test method to check whether the alarm can achieve gas leakage monitoring, and the test should be performed multiple times.
3, the requirements of the installation environment
(1) No interference should be avoided. Install it in a humid place or place where the soot and dust are concentrated. Spray paint, alcohol and other volatile chemicals to avoid false alarms.
(2) Wall mounted installation. Before installation, the specific gravity of the combustible gas and air should be determined, and the alarm should be installed at a suitable position within 1.5 m from the radius of the gas source. Gas lighter than air, installed 30cm from the ceiling; gas heavier than air, installed 30cm away from the floor. The height of the interior space of a home building is generally 2.6 meters. Artificial gas - lighter than air, floating high; natural gas - lighter than air, floating high; liquefied petroleum gas - heavier than air, deposited in low places.
At present, the Public Security Fire Bureau is vigorously promoting the fire-fighting Internet of Things, with a low-power wide-area network, the industry will have much to offer. The intelligent smoke is used as a demonstration application by NB-IoT, and its importance is self-evident. By the way, is this thing installed in your home?
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