Visible light communication password unlocking device and method

Abstract

The invention discloses a visible light communication password unlocking device and method. The visible light communication password unlocking device comprises a light key and a light-sensing lock, wherein the light key is used for converting a digital password signal into a visible light signal which flickers according to certain frequency and transmitting the visible light signal to the light-sensing lock; the light-sensing lock is used for receiving the visible light signal, converting the visible light signal into the digital password signal and comparing the digital password signal with a pre-set digital password signal to judge whether the light-sensing lock is unlocked or not. By adopting the visible light communication password unlocking method disclosed by the invention, the light-sensing lock is unlocked through the visible light key and the safety is relatively high. The light key does not have penetrability and is difficult to copy; electromagnetic radiation is not caused, and energy saving and environment protection are realized; meanwhile, physical keys including a metal key or an access control card and the like are omitted, so that the visible light communication password unlocking device has relatively high application and popularization value; compared with a traditional access control system, the visible light communication password unlocking device has the characteristics of energy saving and environment protection and high safety.

Description

technical field [0001] The present invention relates to a password unlocking device and method, in particular to a visible light communication password unlocking device and method. Background technique [0002] At present, for mechanical door locks, metal keys are usually used, and the security is extremely poor. For example, in offices, hotels and other places where there is a large flow of people, when a person's key is lost, the door lock needs to be replaced, which is very troublesome. In addition, the material of the key is hard and needs to be carried around, and the key is easy to copy. [0003] For electronic magnetic card locks, by reading card information and using card duplication equipment, the unlocking information on the card can be completely copied, but there are large loopholes in terms of security risks, and it is difficult to popularize and apply. Radio frequency technology is usually used, which has good penetration, but is easily interfered by other ra...

AI Technical Summary

Problems solved by technology

For example, in offices, hotels and other places where there is a large flow of people, when one person's key is lost, the door lock needs to be replaced, which is very troublesome.

In addition, the material of the key is hard and needs to be carried with you, and the key is easy to copy

[0003] For electronic magnetic card locks, by reading card information and using card copying equipment, the unlocking information on the card can be completely copied, but there are large loopholes in potential safety hazards, and it is difficult to popularize and apply

Radio frequency technology is usually used, which has good penetration, but at the same time it is easily interfered by other radio frequency signals, resulting in the leakage of unlocking information

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