The application of smart home in family life has a direct impact on the daily life of residents. In particular, fingerprint locks have a broad market prospect. According to media reports, the smart home industry has developed rapidly and is increasing at a rate of 20% annually. It is estimated that by 2018, the industrial output value will reach 125 billion yuan.
Smart home has been in China for nearly 12 years. It has gradually become a popular place for people to buy houses and decorate. As the heat wave of smart home products continues to hit, many companies have emerged smart home brands, some advanced real estate, villas and luxury homes have installed intelligent systems according to different needs, for a time the smart home surging, great momentum of the fire.
Fingerprint locks, as a major component of smart homes, are also rapidly developing in this wave of trends and even have a tendency to lead smart home products. Industry insiders speculate that in the next few years, with consumers' increasing awareness of fingerprint locks, market acceptance of fingerprint smart locks, and the full construction of the industry's sales network, a wave of fingerprint smart locks will engulf the waves. Ordinary family users in China.
Fingerprint smart lock applies biometric fingerprint recognition technology to everyday door locks, completely changing the traditional door opening method. Using fingerprints instead of mechanical keys not only saves the trouble of carrying keys, but also the security of door locks. Taking the fingerprint smart lock industry of Hollux as an example, the fingerprint smart lock product adopts the preemptive international Biosuer9.0 fingerprint recognition algorithm, which combines the uniqueness of the fingerprint and the non-replicability of the biological identification technology, and the products developed by R&D are separated. The refusal rate and false-receipt rate reach the highest standard. In addition, it is equipped with various alarm functions, and can also be equipped with functions such as security linkage and smart home linkage. This not only ensures that users can quickly open the door, but also can maximize the number of criminals. Refused to protect the user's personal and wealth safety.
Fingerprint smart lock, as a new generation of security products for today's door locks, has attracted the attention and pursuit of users and industry insiders. In just a few years, the number of fingerprint lock companies has soared from the initial 20 to 500, and both production volume and sales volume have increased exponentially. Some large-scale enterprises pay special attention to fingerprint lock technology research and development and customer demand analysis, which fundamentally improves the overall progress of the fingerprint industry and advances the development of the industry.
The minimum functional requirements of intelligent community and home intelligence are to achieve the full three-anticipation function of “security, disaster prevention, and accident prevention†in family homes. The technical innovation and industrial development of the fingerprint smart lock are in line with the development needs of the social and security market intelligence, and enhance people's degree of family life intelligence, and can further provide the community with perfect security security services.
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Sintered NdFeB magnets are prepared by the raw materials being melted in a furnace, cast into a mold and cooled to form ingots. The ingots are pulverized and milled; the powder is then sintered into dense blocks. The blocks are then heat-treated, cut to shape, surface treated and magnetized.
As of 2012, 50,000 tons of neodymium magnets are produced officially each year in China, and 80,000 tons in a "company-by-company" build-up done in 2013. China produces more than 95% of rare earth elements, and produces about 76% of the world's total rare-earth magnets.
Neodymium magnets are graded according to their maximum energy product, which relates to the magnetic flux output per unit volume. Higher values indicate stronger magnets and range from N35 up to N52. Letters following the grade indicate maximum operating temperatures (often the Curie temperature), which range from M (up to 100 °C) to EH (200 °C).
Sintered Nd2Fe14B tends to be vulnerable to corrosion, especially along grain boundaries of a sintered magnet. This type of corrosion can cause serious deterioration, including crumbling of a magnet into a powder of small magnetic particles, or spallingof a surface layer.
This vulnerability is addressed in many commercial products by adding a protective coating to prevent exposure to the atmosphere. Nickel plating or two-layered copper-nickel plating are the standard methods, although plating with other metals, or polymer and lacquer protective coatings are also in use.
Neodymium magnets have replaced alnico and ferrite magnets in many of the myriad applications in modern technology where strong permanent magnets are required, because their greater strength allows the use of smaller, lighter magnets for a given application. Some examples are:
ï‚·Head actuators for computer hard disks
ï‚·Magnetic resonance imaging (MRI)
ï‚·Mechanical e-cigarette firing switches
ï‚·Locks for doors
ï‚·Loudspeakers and headphones
ï‚·Magnetic bearings and couplings
ï‚·Electric motors:
ï‚·Cordless tools
ï‚·Servomotors
ï‚·Lifting and compressor motors
ï‚·Synchronous motors
ï‚·Spindle and stepper motors
ï‚·Electrical power steering
ï‚·Drive motors for hybrid and electric vehicles. The electric motors of each Toyota Prius require 1 kilogram (2.2 pounds) of neodymium.
ï‚·Actuators
ï‚·Electric generators for wind turbines (only those with permanent magnet excitation)
ï‚·Direct-drive wind turbines require c. 600 kg of PM material per megawatt
ï‚·Turbines using gears require less PM material per megawatt
ï‚·Toys
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Jinyu Magnet (Ningbo) Co., Ltd. , https://www.magnetbonwin.com