TOP1: panasonic Panasonic smart lock
Brand introduction: Panasonic door control is a well-known smart locks brand, belonging to Japan's Panasonic Group, a set of lighting/wiring/electrical/door control products, design, manufacturing, sales, service as one of the integrated enterprise.
Reason for recommendation: well-known foreign brands. The company is mainly engaged in lighting appliances, wiring appliances, health appliances, door control four categories of more than 2,000 kinds of products manufacturing. PMFBJ as China's larger, modernized lighting appliances production enterprises, in the introduction of Panasonic high-tech merchandise technology and scientific manufacturing management experience at the same time, pay special attention to provide the Chinese people with "safe, energy-saving, comfort, convenience," high-quality goods, and provide "safe, energy-saving, comfort, convenience," the Chinese people. At the same time, it pays special attention to providing Chinese people with high-quality commodities of "safety, energy-saving, comfort and convenience" and advocating a beautiful lifestyle and modern lighting culture.
TOP2: kelns kelns intelligent lock
Brand introduction: kelns kelns is a high-tech enterprise specializing in the research and development and production of smart home software and intelligent hardware. Kelns specializes in the production and research and development of intelligent locks, intelligent drying racks, and other intelligent hardware products and intelligent robots of science and technology innovation brand. It is the first innovative enterprise in the smart lock industry to propose a new retail "mechanic with goods", and the company strives to create the industry's first innovative mode of operation without stores.
Recommendation: the industry's highest chip configuration and performance of the smart lock brand. kelns kelns smart lock set of cutting-edge technical strength and strong manufacturing power in one, can provide customers with intelligent one-stop service from R & D and design to manufacturing products, through the Internet of Things, cloud computing, voice recognition, artificial intelligence technology, connecting the home electrical products, HVAC comfort equipment, security, and audio-visual systems, to build an interconnected system. Through Internet of Things, cloud computing, voice recognition and artificial intelligence technology, it connects home electrician products, HVAC comfort equipment, security and audio-visual systems to build an interconnected home Internet of Things, and has been selected as a national demonstration project of new information consumption to create a smart life for global consumers. It is the first innovative enterprise in the smart lock industry to propose a new retail "mechanic with goods", and the company strives to create the first innovative model of shopless operation in the industry.
Most of the technical staff of the enterprise team have served in Ali, Google, Xiaomi and other Internet technology companies, the company from the beginning of the founding of the company, Colin Shi adhere to the commitment to research and development and manufacturing of high-end quality, convenient and comfortable to use, the price of pro-people, the appearance of simple and stylish smart hardware products, the company adheres to the "high-quality, low-priced" marketing model, to "focus on research and development, and" the smart hardware products, the company is committed to the development of the smart hardware products. The company adheres to the "high quality and low price" product marketing model, to "focus on research and development of ten years of warranty of intelligent electrical products" as the goal of their own responsibility, wholeheartedly provide the industry's best products back to consumers.
TOP3: SAMSUNG Samsung smart lock
Brand introduction: Samsung smart lock by the Samsung Group's globalization of high-tech industry company Samsung SDS independent research and development, China's general agent for the Samsung Data Systems (China) Co. Reason: foreign well-known brands. Samsung fingerprint locks bring people convenient life modernization, do not have to worry about forgetting to bring the key caused by the problem. Reflect the taste of life, and high security, fingerprint technology is difficult to be copied and modeled. Samsung fingerprint locks are currently widely used, many real estate companies around the world community are collectively adopted, and the use of the effect and evaluation is very good.
TOP4: DESSMANN intelligent locks
Brand introduction: Germany's advanced fingerprint locks brand, specializing in fingerprint biometrics research, fingerprint application product development/production/sales/services as a whole, and its products use the post-Bauhaus style is renowned in Europe.
Reason for recommendation: domestic intelligent lock well-known enterprises. Deschmann has been focusing on the research and development of intelligent electronic locks, manufacturing, and sales, installation, maintenance and other one-stop services, in science and technology innovation, brand building is particularly prominent, aimed at hundreds of millions of users around the world to bring intelligent and worry-free life. The company can provide customers with smarter biometric products by virtue of its technological backing, perfect supply and sales channels, rich market development experience and excellent pre-sales and after-sales services.
TOP5: kaadas Cadiz smart lock
Brand introduction: focusing on the field of smart locks, is a set of product development, manufacturing, sales, installation, after-sales in one of the whole industry chain company, is a national high-tech enterprises, headquartered in Shenzhen, China.
Reason for recommendation: domestic smart lock well-known enterprises. Cadiz has been adhering to the "innovation, intelligence, quality, integrity, craftsmanship" to do the product, for every consumer around the world to provide comfort, convenience, safety and high quality of life. At present, Cadiz has more than 1,000 employees, tens of thousands of global terminal outlets, and its sales scale ranks among the top in the world.
TOP6: Haier Haier Smart Lock
Brand Introduction: Founded in 2006, Haier Smart Home is a product under the Whole House Intelligence Platform, an important support for the Haier Group's networked strategy, the Haier Smart Home is committed to promoting the transformation from product hardware to solutions through the smart home U-home life platform, the interconnection of factories to build a parallel interactive platform and ecosystem to provide the Internet era. platform and ecosystem, providing solutions for a better life in the Internet era.
Reason for recommendation: domestic veteran enterprise, perfect after-sales system. As the world's leading platform for a complete set of intelligent solutions, the company undertakes Haier's smart home ecological solutions, takes the field of intelligent security as the entrance, integrates global resources, applies the Internet of Things, cloud computing, big data analysis and other technologies to the core products and solutions, and widely serves in the fields of smart home, smart community, smart campus, smart campus, smart hotels and smart apartments, etc., and makes active efforts for China's smart city to Haier has been working hard for the realization of China's smart city. Relying on Haier Group's R&D and brand advantages, after years of R&D and technology precipitation, the company has formed an overall business pattern of one body, two wings and multiple breakthroughs.
TOP7: EZVIZ Fluorite Smart Lock
Brand introduction: Hikvision's smart home brand, using intelligent hardware, Internet cloud services, artificial intelligence (AI), robotics and other technologies, and strive to create an intelligent working, living and learning environment for users Fluorite, quality smart home brand. Using intelligent hardware, Internet cloud services, artificial intelligence (AI) and robotics and other technologies, it strives to create an intelligent working, living and learning environment for users, so that people can enjoy an easy, comfortable and enjoyable life brought by science and technology in a safe, convenient and green living environment created by intelligent technology.
Reason for recommendation: professional monitoring supporting brand . Fluorite build "1 + 4 + N" smart home ecology, with security as the core, centered on the Fluorite Cloud, carrying four major self-developed hardware, including smart home cameras, smart home, intelligent control, intelligent service robots, open access to the environment control, intelligent audio and video subsystems ecosystems, to achieve the whole-house intelligentization of the home and home scenes, while using interconnection and interoperability. Intelligent, and at the same time use the interconnected Fluorite Cloud open platform, share the cloud platform service capabilities of intelligent video with partners, *** with the creation of the Internet of Things cloud ecology.
TOP8: cloud dog smart lock
Brand Introduction: Founded in 1992, the domestic professional smart locks and smart entrance solutions provider, focusing on electronic smart door locks products based on electronic security products research and development, production, sales and service enterprises
Recommended reasons: the highest cost-effective smart locks brand . Cloud dog since its inception, adhere to the product quality first, *** access to more than 90 national patents, more than 50 Chinese and foreign certifications. The main products through the U.S. BHMA electronic lock certification, the U.S. UL fire safety certification, the European CE electronic lock certification, has been more than 80 countries and regions of the world's hotels, real estate, commercial, office, medical, residential customers, providing innovative technology and product solutions.
TOP9: MI millet smart lock
Brand introduction: millet group's smart home brand, mainly intelligent hardware, to provide family service products to the user's intelligent life services as a whole solution On March 29, 2016, Lei Jun, founder of the millet company, released a new smart home brand under the millet in Beijing - -Mijia MIJIA. Since then, millet smart home products have also been fully enabled by the MIJIA brand, to do the artwork of life is also the product concept of the MIJIA brand - aimed at bringing consumers a set of reliable quality, excellent design, reasonable pricing in one of the smart home products.
Recommendation: cost-effective Internet brand. Mijia APP relies on the millet ecological chain system, is the control center and e-commerce platform of millet ecological chain products, set device control, e-commerce marketing, crowdfunding platform, scene sharing in one, it is a user's overall solution for intelligent life mainly based on intelligent hardware, covering hardware and family service products. Mijia APP not only connects Mijia's eco-chain companies, and all millet and eco-chain smart products to achieve interoperability, but also access to open access to third-party products, is committed to building a complete ecological closed-loop from the intelligent access to the product, crowdfunding incubation, e-commerce access, to reach the user, control and sharing.
TOP10: Deer intelligent lock
Brand introduction: Cloud Ding Network Technology (Beijing) Co. With the mission of "making living safer and better", the company is committed to becoming the trusted partner of every home through scientific and technological innovation. The company mainly owns two brands, Yunding and LUCK. Focusing on the intelligent business of renting, Yunding brand mainly provides intelligent basic services integrating software and hardware for various rental scenarios, including intelligent hardware such as smart door locks, smart water and electricity meters, smart access control, smart gateway, etc., and the apartment intelligent management platform "Anxin Residence" SaaS. As of December 2020, the number of in-depth service customers exceeds 15,000.
Reason for recommendation; professional apartment lock brand. As a Xiaomi ecological chain enterprise, Yunding Technology has also joined hands with Xiaomi to create a variety of Xiaomi intelligent door locks, Xiaomi intelligent cat's eye, Mijia intelligent safe deposit box and other products to further promote the popularity of domestic smart home security products. At the same time, it has also carried out an international layout, launched an international brand Lockin overseas and widely recognized and praised by users in many countries.
Expanded Information:
Characteristics
Convenience: a. Smart locks are different from general mechanical locks, with automatic electronic induction locking system, he will automatically sense that the door is in the closed state, the system will be automatically locked. Smart locks can be opened by fingerprint, touch screen, card. b. General fingerprint locks in the use of password / fingerprint registration and other functions is not convenient, especially for the elderly and children to use, individual smart locks, you can turn on its unique voice prompts, so that the user operation is more simple and easy to understand.
Safety: a. General fingerprint combination locks have the danger of password leakage. Recent smart locks also have a virtual password function technology, that is, in front of or behind the registered password, you can enter any number as a virtual password, effectively preventing the leakage of the registered password, but also open the door locks. b. In the ordinary neighborhood security environment, the general lock handle to open the way can not ensure sufficient security performance, it can be very easy to drill holes in the door and then use the steel wire to turn the handle will be opened. c. In order to prevent the leakage of the registered password, it is important that you have a password that can be used as a security code. Many smart locks with patented technology to ensure that the interior of the handle set up to increase the security handle button, need to hold down the security handle button to turn the handle door to open, bringing more secure use of the environment. (At the same time in accordance with the user's needs, through simple operation, this function can be set selectively.) c. The recent smart lock palm touch screen will automatically display, 3 minutes will automatically lock. Whether the password has been set, whether the door lock has been opened or closed, the number of password or door card registration, and battery replacement tips, tongue blocking warning, encountered a low voltage and other situations, the screen are displayed, intelligent intelligent control.
Security: The recent smart locks are different from the previous "open and then scan" method, the scanning method is very simple, put your finger on the top of the scanning place from top to bottom scanning can be, without the need to press the finger in the scanning place, the scanning method is more reduce fingerprints residue, greatly reducing the possibility of fingerprints being copied, the security of the exclusive use of the lock. The scanning method reduces fingerprint residue and greatly reduces the possibility of fingerprints being copied, making it safe and secure to use.
Creative: Traditional mechanical locks are not particularly concerned about their appearance. Intelligent locks not only from the appearance of the design suitable for people's tastes, and even created a smart locks like Apple's smart feeling. Intelligent locks have been quietly marketed.
Interactivity (Interactive): intelligent door locks built-in embedded processor and intelligent monitoring such as taking into ah, with the ability to interact with the tenants at any time of interoperability, can take the initiative to report on the day's TV visitors. Another aspect of visitors can even remotely control the smart door lock for visiting guests to open the door.
Technical principles
In the field of security technology to prevent, with anti-theft alarm function of the electronic combination lock instead of the traditional mechanical combination locks, to overcome the shortcomings of the mechanical combination locks with less passwords, poor security performance, so that the combination locks, whether technically or in terms of performance, are greatly improved step. With the development of large-scale integrated circuit technology, especially the introduction of single-chip microcomputer, the emergence of intelligent combination locks with microprocessors, which in addition to the functions of the electronic combination locks, but also the introduction of intelligent management, expert analysis systems and other functions, so that the combination locks have a high degree of security, reliability, and increasingly wide range of applications. This paper introduces the intelligent combination lock with 51 series microcontroller as the core, and elaborates its working principle, basic function block diagram, key design technology and software workflow.
Basic principle
Smart combination lock system consists of intelligent monitor and electronic locks. The two are placed off-site, and the intelligent monitor supplies the power required by the electronic lock and receives the alarm and status information sent by it. Here the line multiplexing technology, so that the power supply and information transmission **** with a two-core cable, improving the reliability and security of the system.
1.1 The basic principle of intelligent monitor
Intelligent monitor it consists of microcontroller, clock, keyboard, LCD display, storage, demodulator, line multiplexing and monitoring, A/D conversion, buzzer and other units. Mainly complete the communication with the electronic locks, intelligent analysis and safety monitoring of communication lines and other functions.
The intelligent monitor is always in the receiving state, and receives the alarm information and status information from the electronic locking device in a fixed format. For the alarm information, immediately through the LCD display and buzzer sound, light alarm; for the status information, it is stored in the memory, and with the electronic locks in this moment before the historical state of comparison, the trend of change, predicting future changes in the state of the LCD display to the duty officer to provide the appropriate information for decision-making use. Intelligent monitor and electronic locks to establish communication links at the same time, through the A/D converter real-time monitoring of changes in the power supply current flowing through the communication line, effectively preventing damage caused by human factors, to ensure that the communication line is unimpeded.
1.2 electronic locks basic principles
Electronic locks it is also a series of 51 microcontroller as the core, with the corresponding hardware circuits, to complete the password setting, storage, identification and display, drive electromagnetic actuators and detect the value of the drive current, receive sensors to send alarm signals, send data and other functions.
The microcontroller receives the key code and compares it with the code stored in the EEPROM. If the code is correct, the electromagnetic actuator will be driven to unlock the door; if the code is incorrect, the operator will be allowed to re-enter the code up to three times; if the code is incorrect for three times, the microcontroller will alarm the intelligent monitor through the communication line. The microcontroller sends each unlocking operation and the driving current value of the electromagnetic actuator at this time to the intelligent monitor as the status information, and at the same time, it also sends the alarm information received from the sensor interface to the intelligent monitor as the basis for intelligent analysis.
Key technologies
In order to improve the security and reliability of the smart combination lock, this paper, in addition to measures taken in the selection of devices (such as the use of low-power, wide temperature range of the device), in the design of the design of some key technologies.
2.1 Line multiplexing technology
Intelligent monitors and electronic locks are placed off-site. If the communication line and the power supply line are separated, it is bound to increase the number of cable cores, and the security risks increase. In this paper, the use of line multiplexing technology, only a two-core cable, to achieve the power supply and information transmission. The schematic diagram is shown in Figure 3.
In the transmitting end, the electronic locking device through the pulse transformer T will be modulated data signal boosting and sent out; in the receiving end, the pulse transformer T will be received data signal step-down to send the demodulator, in order to reduce the carrier signal loss in the transmission process. In order to reduce the mutual interference between communication and power supply, the selection of choke L, coupling capacitor C should be considered comprehensively.
Set the carrier frequency fo=400kHz, in order to ensure that the vast majority of the signal energy is transmitted to the receiving end, take L=33.7μH?C1=0.047μF.
2.2 Current monitoring technology
In order to prevent the human damage of the communication line and electromagnetic actuator due to some reason caused by the current flowing through the electromagnetic coil is too large and burn the coil, this paper adopts current monitoring technology in the design of intelligent combination lock.
2.3 Data communication and pre-processing technology
The intelligent monitor receives the status information from the lock (which includes the opening and closing of the lock, the first wrong code, the second wrong code, the third wrong code, etc.), the current value flowing through the electromagnetic actuator coil, and reads the value of the power supply current of the communication line at that moment, and the three of them are combined to form a block of data, of which the operating status accounts for 1 byte, power supply current accounts for 2 bytes, and coil current accounts for 2 bytes. The intelligent monitor is always in the receiving state during the communication process with the electronic lock. In order to improve the reliability of communication, this paper adopts the repeated transmission method in the communication protocol, the electronic locking device sends each set of data 5 times repeatedly, and the intelligent monitor receives this set of data, and uses the law of large number decoding to correct the error, which ensures the accuracy of data reception. In addition, in order to save memory needs to receive the data using pre-processing technology, that is, after each received a data, first of all, the data and set the threshold value comparison, if greater than the threshold value, then send out an alarm over the limit; if less than the threshold value, the data will be received with the same kind of data on the same day to compare, retain the larger one. So that the data stored every day for the maximum value of similar data.
2.4 Intelligent analysis
Intelligent analysis and prediction technology is based on each received data block, and the previous similar data to compare the recorded value, analyze the operation caused by the size of the current changes and trends, timely detection of problems, and report to the management staff, thereby improving the reliability of the entire system.
System software
Intelligent combination lock software using 51 series microcontroller assembly language on the intelligent monitor and electronic locks are programmed separately. Intelligent monitor software includes keypad scanning and LCD display program, buzzer driver, clock modification and reading program, data communication and preprocessing program, intelligent analysis program and line monitoring program and other modules. The electronic locker software includes modules such as keyboard scanning and decoding program, LCD display program, communication program, electromagnetic actuator driver and detection program, and sensor interface program. The software design process adopts modular design method, which is easy to read, debug and improve the program.
Intelligent combination lock makes full use of the 51 system microcontroller software and hardware resources, the introduction of intelligent analysis function, improve the reliability and security of the system. By installing and using in a certain type of safe, it is welcomed by users. In addition, the intelligent combination lock in the software and hardware changes, can constitute an intelligent distributed monitoring network to achieve a range of centralized monitoring and management in the financial, insurance, military and other security areas have a wide range of application prospects.