The principle of fingerprint lock technology refers to the uneven texture on the front side of the finger. Although the fingerprint is only a small part of the human skin, it contains a lot of information. These lines are different in patterns, breakpoints and intersections. They are referred to as "features" in information processing, and it has been medically proven that these features are different for each finger, and that these features are unique and permanent.
Therefore, we can associate a person with his fingerprint, and by comparing his fingerprint characteristics with pre-saved fingerprint features, he can verify his true identity. Therefore, the above characteristics of fingerprints have become the most important evidence for identifying identity and are widely used in public security criminal investigation and judicial field.
Second, no matter what lock, its essence is still a mechanical product. Fingerprint lock is a model for transforming traditional industries with modern high technology. Its core technology is first of all grasped by mechanical technology. Mechanical technology mainly consists of the following aspects:
1. Reasonable design of front and rear panels
That is, the appearance is a sign that is significantly different from similar products, and the more important internal structure layout directly determines the stability and function of the product. This process involves many aspects such as design, mold making, and surface treatment. Therefore, the more manufacturers of styles, the relative development and design capabilities are stronger and the stability is better.
2, lock body
That is, the mother of the bolt that can be connected to the door. The quality of the lock directly determines the life of the product. This is the most core technology in mechanical technology, and it is also the lifeblood of fingerprint locks. It is also the most difficult problem in the industry. 95% of the existing production units can not solve the problem, mainly through outsourcing. A strong manufacturer has the ability to design and develop locks. Therefore, the lock body is the core component that truly reflects the technical level of the manufacturer, and is also the core technology of the entire fingerprint lock.
3, the motor
The motor is the drive. Just like the computer's driver software. It is the connection equipment of electronics and machinery, and the transformation center of power plays a major role in connecting the upper and lower. If the motor stops working or obstacles, the lock will automatically open and cannot be locked.
4, fingerprint module and application system
This is the basis of the electronic part. Fingerprint module, the current peer function is almost the same, mainly depends on which chip is used, which algorithm is used, such as Sika's algorithm chip, after a long-term market verification, the effect is very good.
5, circuit design
Clear circuit design and wiring are also important factors in ensuring product stability.
6. Fingerprint recognition algorithm
At present, the fingerprint identification algorithm of general fingerprint products is the core algorithm of our company's own intellectual property rights. The corresponding technical indicators have reached the world's leading position, among which: the false recognition rate (false positive rate): "0.0001%: One in a million, that is, the probability of accidentally unlocking; the rejection rate: "0.3%: three thousandths, that is, the probability of refusing to unlock after storing the fingerprint; rotation angle: plus or minus 180 degrees, that is, 360 Degree of arbitrary rotation; maximum translation: 5mm; recognition time: "0.2s, the time of fingerprint comparison processing.
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