Technical principle of fingerprint smart lock
Fingerprint refers to the uneven lines on the front skin of the finger end. Although fingerprints are only a small part of human skin, they contain a lot of information. These lines are different in patterns, break points and intersections. In information processing They are referred to as "features" in China. It has been proved in medicine that these features are different for each finger, and these features are unique and permanent. Therefore, we can associate a person with his fingerprints and compare them. His fingerprint characteristics and pre-saved fingerprint characteristics can verify his true identity. Therefore, the above characteristics of fingerprints have become the most important evidence for identification and are widely used in public security criminal investigation and judicial fields.
Configuration structure editing Voice
The core components of Wenlock: main board, clutch, fingerprint collector, password technology, microprocessor (CPU), intelligent emergency key. As a fingerprint lock, the most important thing should be the algorithm chip, that is, the heart is better, and you can do a good job of the mechanical part. If the recognition degree is high, anyone's fingerprint can be opened, then what is the use?
Secondly, no matter what kind of lock, its essence is still a mechanical product. The fingerprint lock is a model of using modern high technology to transform traditional industries, and its core technology is first of all the grasp of mechanical technology. Mechanical technology mainly consists of the following five aspects:
1. The reasonable design of the front and rear panels, that is, the appearance, is a sign that is significantly different from similar products. More importantly, the internal structure layout directly determines the stability and function of the product. This process involves multiple links such as design, mold making, and surface treatment. Therefore, manufacturers with more styles, relatively speaking, have stronger development and design capabilities and better stability.
2. Lock body. That is, the parent body of the bolt that can be connected to the door. The quality of the lock body directly determines the life of the product. This is the most core technology in mechanical technology and the lifeblood of fingerprint locks. It is also the most difficult problem to solve in the industry. Ninety-five percent of the existing production units cannot solve this problem, mainly through outsourcing. Powerful manufacturers have the ability to design and develop their own lock bodies. Therefore, the lock body is the core component that truly reflects the technical level of the manufacturer, and it is also the core technology of the entire fingerprint lock.
3. Motor. The motor is the drive. Just like the computer's driver software. It is the connecting device of electronics and machinery, the power conversion center, and plays a major role in connecting the previous and the next. If the motor stops working or becomes obstructed, the lock will automatically open and cannot be locked.
4. Fingerprint module and application system. This is the basis of the electronic part. The fingerprint module has the same functions as its peers. It mainly depends on which chip is used and which algorithm is used. After long-term market verification, the effect is very good.
LCD screen
There are not many domestic products that can provide this configuration, and most of them only rely on lights and sounds to prompt the functions of these fingerprint modules. After setting up the LCD display, the user operation can be more convenient and simple. The power consumption is slightly higher than the lighting and sound. Whether it is needed or not, it depends on the consumer's own needs. But the use of LCD can definitely make the fingerprint lock smarter and easier for users to operate, which is obvious. Just like a mobile phone, if the display is black, you can still make calls, but it's not convenient. Configuring the LCD is not a simple accumulation of materials, but also involves the reasonable design of software and circuit systems. In general, the use of this technology is like the replacement of mechanical locks by fingerprint locks. It is an inevitable development of technology and market!
chip
Chip technology is a common barrier faced by all IT industries in my country. This technology has always been controlled and monopolized by the United States. DSP fingerprint lock professional processing chips have been successfully developed in China. The chips are generally packaged in Taiwan, and domestic manufacturers carry out algorithm software burning; most fingerprint lock manufacturers use domestic fingerprint algorithm chips. The so-called German fingerprint algorithm and American fingerprint algorithm on the Internet.
sensor
Fingerprint sensors are mainly optical sensors and semiconductor sensors. Optical sensors mainly refer to the use of light sensor devices such as coms to obtain fingerprint images. Generally, they are made in the form of integral modules on the market. This type of sensor is relatively cheap, but larger in size, and is generally used For fingerprint locks, fingerprint access control and other products.
Semiconductor sensors are mainly monopolized by fingerprint sensor manufacturers such as FingerPrint Cards, Sweden. They are divided into two types: swipe type and surface type. The surface type is relatively expensive but has better performance. Most of them are used in important fields such as customs, military and banking. Nowadays, with the improvement of people's awareness of home security, more and more manufacturers use semiconductor surface sensors in the civilian field, and the user experience is better. The hanging type is small in size and low in price, but the experience is relatively poor. The speed and direction of the scraping have an impact on the effect.
Fingerprint module
As the front end of the industry chain, professional software companies and fingerprint lock R&D companies provide fingerprint module groups. Most of these modules are imported from abroad to China and then improved and provide corresponding secondary development space. Only the fingerprint module that has undergone secondary development can really play its role. Just like a computer, Windows XP is already installed for you, but if you want to be practical, you have to install some special software.
