PCBA scheme development -- intelligent door lock scheme
PCBA scheme development -- intelligent door lock scheme
1、 Working principle of fingerprint door lock scheme
The principle of fingerprint lock technology refers to the uneven lines on the front skin at the end of the finger. Although the fingerprint is only a small part of human skin, it contains a lot of information. These lines are different in patterns, breakpoints and intersections. They are called "features" in information processing. It has been proved that these features are different for each finger in medicine, And these features are unique and permanent.
Therefore, we can match a person with his fingerprint, and verify his true identity by comparing his fingerprint characteristics with the pre stored fingerprint characteristics. Therefore, the above characteristics of fingerprint have become the most important evidence to identify identity and are widely used in the field of public security criminal investigation and justice.
2、 Technical parameters of fingerprint door lock scheme
Window area: Semiconductor: 10mm * 13mm
Optical: 16mm * 20MM
Sensing voltage: 508dpi
Semiconductor: 192 * 256
Optical: 320 * 240
Display: 0.96 "OLED / no screen version
False recognition rate / false rejection rate: < 0.001% / < 0.1%
Template ⽂ piece / matching method: 800 bytes / 150 pieces / 1: n
Fingerprint recording / search time: < 1s / < 0.7s (at 1:150, mean value)
Working voltage: DC6V (4 AA batteries)
Quiescent current: Optics: 35ua-60ua, semiconductor: 45ua-70ua
Dynamic current: optical: 90ma-150ma, semiconductor: 80ma-120ma
Working environment: - 10 ° C - + 60 ° C / 40% rh-85% RH (⽆ no condensation)
Anti interference capability: contact discharge 4KV / space discharge 15kV (see test report)
3、 Introduction to fingerprint door lock scheme and function
1. Remote unlocking: what should your family do if they forget their keys when they go out? It's inevitable that they forget in life. No matter where you are, just click on the machine to open the door for your family! (this function needs to be used with WiFi alarm host)
2. Smart gatekeeper: the lock is the softest rib of the door and a game between the thief and the gatekeeper. With the protection of the smart door lock, the thief has no place to hide! The smart lock has a unique intelligent detection system for illegal unlocking, which can actively and timely send an alarm to the owner's mobile phone. (this function needs to be combined with the WiFi alarm host)
3. Fingerprint unlocking: no two people in the world have exactly the same fingerprint. Why not let the fingerprint become the key to open the door? When you go home from work, press it gently to improve the encryption fingerprint unlocking technology, making it easier to go home.
4. Password unlocking: no matter how the technology changes with each passing day, the password is always trustworthy! The traditional technology is newly upgraded, and the intelligent door lock is safer!
5. Swipe the card to unlock: when a guest comes to stay at home, it is inconvenient to tell him the password or equip him with a key. Do you think you will neglect the guest? How to make the guest feel at home? With the care of intelligent door lock, an inductive door opening card is specially prepared for you in case of need.
6. Double authentication: if you store valuables at home, you will inevitably worry when you go away. What should you do? You can upgrade the unlocking method to two combinations, such as "fingerprint + password", and you can only open the door after passing all of them. Double authentication and double insurance!