A combination lock system based on mobile phone flashlight LED optical communication
A technology of optical communication and combination lock, applied in the field of combination lock system, which can solve the problems of easy password cracking, high cost, and carrying electronic keys, etc., and achieve reliable and effective data transmission process, strong anti-noise ability, and simple communication circuit Effect
Active Publication Date: 2020-05-05
NANNING UNIV
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Problems solved by technology
Among them, the mechanical type requires manual input of passwords and its confidentiality is not high enough, and the mechanical keys are also easily damaged; the fingerprint recognition type combination lock is easy to use, but the fingerprint recognition type has a high production cost and the password is easy to be cracked; Magnetic induction is also widely used, but it is vulnerable to electromagnetic interference; while face recognition has a high level of security and is very convenient to use, but it requires a high-definition camera, which makes its cost too high
There is still a problem to be improved in the above-mentioned smart locks, that is, they must carry electronic keys. If the key is lost, it will bring relatively big troubles.
Method used
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[0016] The technical solution of the present invention is further described below, but the scope of protection is not limited to the description.
[0017] Such as figure 1 As shown, a combination lock system based on mobile phone flashlight LED optical communication, including a signal sending end and a signal receiving and processing module; the signal sending end is a smart phone equipped with an LED light;
[0018] The signal receiving and processing module includes a first resistor R1, a second resistor R2, a third resistor R3, a potentiometer RV1, a photosensitive diode D1, a light emitting diode D2, a first NOT gate U1A, a second NOT gate U1B, and a first capacitor C1 , NPN transistor Q1, solenoid valve coil and single-chip microcomputer; wherein the negative pole of the photodiode D1 is connected to the 5V power supply, the positive pole is connected to one end of the first resistor R1, the other end of the first resistor R1 is connected to one end of the potentiometer ...
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A combination lock system based on mobile phone flashlight LED optical communication, including a signal sending end and a signal receiving and processing module; As a photosensitive material, the data is transmitted in the form of serial communication, and the data transmission process is reliable and effective. In addition, the present invention uses the mobile phone as the electronic key, which eliminates the trouble of carrying the electronic key, and the visible light communication will not be subject to electromagnetic interference. Its anti-noise ability is strong; the receiving circuit adopts a photosensitive diode, and its optical effect speed block is low, and the cost is low; the communication method adopts the serial port modulation method, and the optical signal is transmitted in the form of switching value, which does not require modulation and demodulation process, which greatly simplifies the circuit structure, the communication circuit it constitutes is very simple and reliable.
Description
technical field [0001] The invention belongs to the field of intelligent locks, and in particular relates to a combination lock system based on LED light communication of a mobile phone torch. Background technique [0002] Nowadays, electronic smart locks are more and more widely used. At present, the main types of smart locks are key input type, fingerprint recognition type, electromagnetic induction type, radio frequency card swiping type, face recognition type and so on. Among them, the mechanical type requires manual input of passwords and its confidentiality is not high enough, and the mechanical keys are also easily damaged; the fingerprint recognition type combination lock is easy to use, but the fingerprint recognition type has a high production cost and the password is easy to be cracked; Magnetic induction is also widely used, but it is vulnerable to electromagnetic interference; while face recognition has a high level of security and is very convenient to use, but...
Claims
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IPC IPC(8): G07C9/00H04B10/116H04B10/114
CPCG07C9/00182G07C9/00571H04B10/1141H04B10/116
Inventor 朱浩亮黄译锋
Owner NANNING UNIV