Why does the fingerprint lock appear to be insensitive to recognition?

Fingerprint locks have been in the public eye since around 2009, and they began to rise in middle-class families in 2013. They developed rapidly in 2015 and began to explode in 2016 and 2017. It has been in the domestic market for more than 10 years. More and more home users have abandoned traditional mechanical locks and switched to fingerprint locks. Some problems have also been exposed behind the rapid growth of the fingerprint lock industry. The most feedback from users is that the fingerprint module is not sensitive after the fingerprint lock has been used for a certain period of time. Question 1: There is something wrong with the finger or sweat or other things, and there is no response after pressing it all the time? Question 2: The fingerprints of the elderly are blurred and the recognition is not sensitive; the fingerprints of the children are shallow, and the recognition fails when the shape of the fingerprint changes during the growth and development? Question 3: Fingers are dry in autumn and winter, fingerprints can not be recognized? To understand these problems, first let's understand the working principle of the fingerprint lock: the fingerprint collector will collect the number of fingerprints and process the system through the CPU processor. The information comparison correctly sends a signal to the motor, and the motor rotates to drive the clutch. The device can be unlocked. In fingerprint recognition, the surface of the finger is in contact with the fingerprint sensor and is recognized by the efficiency of the discharge current. At present, fingerprint recognition modules in the market are mainly divided into two categories: one is semiconductor fingerprint recognition, and the other is optical fingerprint recognition. The optical fingerprint head obtains fingerprint information by calculating the different distances between the ditch and ridge of the fingerprint and the collection window. When the finger is sweaty or the collection window has moisture, it will affect the transmission and distance of the light, causing the obtained fingerprint information to be different from the original The stored information is wrong, so the fingerprint lock recognition fails. Although semiconductor fingerprint locks are more advanced than optical fingerprint locks, there are also cases of identification failure after damp. Speaking of semiconductor fingerprint locks, everyone should be able to think of the working principle of capacitive screens. They all use the current induction of the human body to work. When the finger has water, the water has conductivity, then the current will be affected, which is likely to cause recognition failure. Therefore, it is recommended to wipe off the sweat of your fingers or choose other ways to open the lock in this situation. At present, fingerprint locks have many ways to open. For example, the Fuyu fingerprint lock can use a smart bracelet, which is also very convenient to unlock. Question 2: The fingerprints of the elderly are blurred and the recognition is not sensitive; the fingerprints of the children are shallow, and the recognition fails when the shape of the fingerprint changes during the growth and development? The elderly vary from person to person. At present, most elderly people have little problem with fingerprint recognition, but there are also some elderly people whose fingerprints will become more and more blurred due to their age and years of hard work, or they may not be able to see clearly at all. Therefore, it is recommended to open the lock with a hand ring or a password for this situation, which is convenient. At present, as long as the children choose the semiconductor fingerprint lock, the recognition problem is basically solved. Compared with optical fingerprint recognition, semiconductor recognition rate is much higher. Fuyu's new generation of smart locks-Liushun Tianyan Smart Cloud Lock uses a semiconductor fingerprint recognition module to continuously improve the recognition speed and ability through artificial intelligence automatic learning capabilities. It can repair the fingerprint blur, the longer it is used, the more sensitive it is. It is a fingerprint lock with memory and life. Very suitable for the elderly and children. Question 3: Fingers are dry in autumn and winter, fingerprints can not be recognized? As the weather gets colder in autumn and winter, the air begins to get drier, especially in the morning and evening. At this time, the skin on the surface of our fingers will become very dry, and the dry skin surface is very unfavorable for the collection of fingerprint images. If the fingerprint image is not clear, it is naturally impossible to extract the characteristics of the fingerprint, and the fingerprint recognition is not sensitive. However, this situation is also an early fingerprint lock. At present, the problem of using semiconductor fingerprint identification templates for the new generation can be easily solved. Analysis of the pros and cons of semiconductor fingerprint recognition and optical fingerprints As the cost drops, more and more fingerprint lock companies choose semiconductor fingerprint recognition modules.
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