CN102610013A - Visible light communication method and data storage system based on visible light communication - Google Patents
Visible light communication method and data storage system based on visible light communication Download PDFInfo
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Abstract
The invention discloses a data storage system based on visible light communication which comprises a light signal transmission system, an electronic lock system and a data storage system, wherein the light signal transmission system is used for transmitting light signals; the electronic lock system is used for converting the light signals into digital signals and unlocking an electronic lock according to the digital signals; the data storage system is used for storing and checking the unlocking information in the electronic lock system; and the data storage system comprises a database module for storing the unlocking information and a terminal device for reading the unlocking information. According to the invention, the unlocking function is realized by adopting a light communication mode, the transmission rate reaches 1 kilomega per second, and the visible light is adopted for transmitting the data for light transmission, and the data is difficult to interfere and capture; and a database storage technology is also utilized, the unlocking information is stored, the data storage system is convenient to maintain and manage, and the safety performance of the visible light communication can also be enhanced.
Description
Technical field
The present invention relates to the optical communication technique field, relate in particular to a kind of visible light communication method and based on the data-storage system of visible light communication.
Background technology
Gate control system is as the indispensable system in places such as company, market, and it has multiple way of realization to reach the purpose of gate control system.Gate control system of the prior art uses radio frequency or infrared technique to realize mostly.
The radio-frequency card of unblanking need just can be opened the gate inhibition near gate control system; This range of receiving to the radio frequency gate control system, reception precision all have higher requirement; The crosstalking of radio-frequency card of unblanking in addition is very serious, and when many radio frequency gate inhibition cards were superimposed, the function of each gate inhibition's card just can not realize.Simultaneously, the standard fixed of radio frequency gate control system, its rf frequency is fixed, and is difficult to bring into play fully its best efficiency.And the necessary point-to-point propagation of infrared light needs the user to aim at receiving end, on the other hand; Infrared light is an invisible light; The user is difficult to discovery and whether aims at receiving end, causes user's use inconvenience, simultaneously because the singularity of invisible light; It is easy under user's condition of unknown, intercepted and captured by other people, causes security to reduce.
Further, in the present gate control system, for guaranteeing safety, video monitoring is set near gate control system usually, this is tightening security property effectively.But video monitoring can not be monitored the various direct state that obtains gate control system as supplementary means, for example when opens, when close, opening time etc.
Summary of the invention
Technical matters to be solved by this invention is, to the above-mentioned deficiency of prior art, proposes the good visible light communication method of a kind of property easy to use, safe and based on the data-storage system of visible light communication.
The technical scheme that the present invention solves its technical matters employing is; A kind of data-storage system based on visible light communication is proposed; Comprise the light signal emission coefficient that is used to launch light signal; Be used for said light signal conversion digital signal and according to the electronic lock system of said digital signal unlocking electronic lock, be used for storing and check the unblank data-storage system of information of said electronic lock system; Said data-storage system comprises and is used to store said database of information module and the end device that is used to read the said information of unblanking of unblanking.
Further, said DBM is transferred to said end device with form web page through http protocol with the said information of unblanking.
Further; Said data-storage system also comprises router or switch; Said electronic lock system and said DBM are integrated in the lock end; Said lock end is a plurality of, and a plurality of lock ends are with said router or switch is two-way is connected, and the information of unblanking in a plurality of lock ends returns to said end device through said router or switch.
Further; Said light signal emission coefficient comprises the light signal transmitter module that is used for the visible emitting signal; The memory module that is used for preset unlocking cipher; Be used for said unlocking cipher is compiled as the collector of binary data, be used for said binary data is converted into the signal conversion module of lower edge trigger pip, be used for driving the driver module of said light signal transmitter module visible emitting signal according to said upward lower edge trigger pip.
Further, said electronic lock system comprises electronic lock; The optical signal detecting module that is used to detect said light signal emission coefficient visible light emitted signal and is converted into current signal; Be used for said current signal is converted into the voltage signal modular converter of voltage signal; Be used for obtaining the digital signal acquisition module of digital signal according to said voltage signal; Be used for said digital signal decoding is the decoder module of unlocking cipher; Be used to judge whether the unlocking cipher that decoding obtains meets pre-conditioned signal judge module, give said electronic lock when meeting when pre-conditioned the output unlocking signal.
Further; Said digital signal acquisition module comprises operational amplifier and comparer; Said voltage signal exports said operational amplifier and said comparer respectively to; Said operational amplifier is exported average volt value to the said comparer of said voltage signal; Said comparer is compared the volt value and the said average volt value of said voltage signal, output digital signal " 1 " when the volt value of said voltage signal is higher than said average volt value, output digital signal " 0 " when the volt value of said voltage signal is lower than said average volt value.
Further, when not meeting when pre-conditioned, said signal judge module is failure to actuate or said signal judge module output alarm information.
Further, the said information of unblanking is opening, the switching time of said electronic lock.
The present invention also provides a kind of visible light communication method, comprises
Unlocking cipher is launched with visible light signal;
Receive said visible light signal, said visible light signal comprises the LED light signal;
Convert said visible light signal into current signal, convert said current signal into voltage signal, convert said voltage signal into digital signal;
With digital signal decoding is unlocking cipher and to judge whether said unlocking cipher meets pre-conditioned, then controls electronic lock and opens if meet.
Further, said unlocking cipher is compiled as binary data, and said binary data is converted into the lower edge trigger pip, and the said lower edge trigger pip driving light signal transmitter module of going up sends visible light signal.
The present invention adopts the mode of optical communication to realize unlocking function, and its transfer rate is up to the per second gigabit, and optical communication employing transmission of visible light transmission of data, and its data should not be disturbed and catch, and the while optical communication equipment is made simply, not fragile or demagnetization.Compare radio-frequency technique; Because the frequency range of wireless electromagnetic wave communication is occupied more, available frequency band is less, and the frequency spectrum resource of optical communication is abundant; The deviser can choose at random that the frequency of suitable operative scenario designs, and optical communication can be used any communication protocol, be applicable to any environment.Further; The present invention also utilizes database storage techniques, with the information stores of unblanking of each lock end, the user can through end device open-and-shut opening, opening time and the warning message etc. of release end; Be convenient to maintenance and management, performance also can tighten security.
Description of drawings
Fig. 1 is the structural representation that the present invention is based on the data-storage system of visible light communication;
Fig. 2 is the structural representation of light signal emission coefficient;
Fig. 3 is the structural representation of electronic lock system;
Fig. 4 is the structural representation of data-storage system;
Fig. 5 is the structural representation of another embodiment of data-storage system;
Fig. 6 is the schematic flow sheet of visible light communication method of the present invention;
Fig. 7 is the schematic flow sheet of another embodiment of visible light communication method of the present invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
As shown in Figure 1, Fig. 1 is the structural representation that the present invention is based on the data-storage system of visible light communication.Among Fig. 1, this system comprises light signal emission coefficient 1, electronic lock system 2 and data-storage system 3.Light signal emission coefficient 1 will be stored in its inner unlocking cipher launches with the visible light form, and this visible light can be LED light; Electronic lock system 2 is converted into digital signal after receiving light signal emission coefficient 1 visible light emitted signal, and compares this digital signal and preset signals, when digital signal and preset signals meet when pre-conditioned electronic lock is opened; The information of unblanking in the data-storage system 3 store electrons lock system 2, the user can check this information of unblanking on the terminal.
As shown in Figure 2, Fig. 2 is the structural representation of light signal emission coefficient 1.Light signal emission coefficient 1 comprises light signal transmitter module 10; In the present embodiment; Light signal transmitter module 10 is the LED lamp; Be used for preset unlocking cipher memory module 11, be used for the unlocking cipher of said memory module 11 storages is compiled as the collector 12 of binary data; In the present embodiment, can through the Manchester's cde mode with said unlocking cipher be compiled as binary data, be used for said binary data convert into the lower edge trigger pip signal conversion module 13, be used for driving the driver module 14 that said light signal transmitter module 10 sends light signal, particularly according to the said lower edge trigger pip that goes up; When driver module 14 receives the rising edge trigger pip, trigger light signal transmitter module 10 and light, when driver module 14 receives the negative edge trigger pip, trigger light signal transmitter module 10 and extinguish.Among the present invention, light signal emission coefficient 1 can be made as independent optical signal transmitter, also can be integrated in all kinds of portable equipments that can send visible light, for example is integrated in mobile phone, MP3, electric torch, the panel computer etc.
As shown in Figure 3, Fig. 3 is the structural representation of electronic lock system 2.Electronic lock system 2 comprises that optical signal detecting module 20, said optical signal detecting module 20 are used for the light signal of sensed light signal emission coefficient 1 emission and convert this light signal into current signal; Be used for said current signal is converted into the voltage signal modular converter 21 of voltage signal, in the present embodiment, current signal is converted into voltage signal through logarithmic amplifier; Be used for institute's voltage signal is converted into the digital signal acquisition module 22 of digital signal; In the present embodiment; Digital signal acquisition module 22 comprises operational amplifier 220 and comparer 221; Voltage signal exports operational amplifier 220 and comparer 221 respectively to; Wherein operational amplifier 220 obtains whole volt value derivation of voltage signal its average volt value and should average volt value export comparer 221 to; Comparer 221 is differentiated voltage signal according to this average volt values, and output digital signal " 0 " is exported digital signal " 1 " when the volt value of voltage signal is higher than mean value when the volt value of voltage signal is lower than average volt value; Being used for digital signal decoding is the decoder module 23 of unlocking cipher, and the decoding process of decoder module 23 is corresponding with the coded system of collector 12, is the manchester decoder mode in the present embodiment; Signal judge module 24, it is pre-conditioned to be used to judge whether unlocking cipher that decoding obtains meets, and then exports unlocking signal and gives electronic lock 25 if meet, and then can not select to be failure to actuate or output alarm information if meet.Above-mentioned decoder module 23 and signal judge module 24 can be integrated in ARM (the Advanced RISC Machines) processor.Simultaneously, among the present invention, when signal judge module 24 output unlocking signals or warning message, arm processor also exports the information of unblanking in the data-storage system 3 to.This information of unblanking comprises information such as the on off state, switching time, time of fire alarming of door.
Please with reference to Fig. 4, Fig. 4 is the structural representation of data-storage system 3.Among Fig. 4, data-storage system 3 comprises that being used for unblank database of information module 30, this DBM 30 of storage is connected with arm processor is two-way; End device 31; This end device 31 can be PC, alternating interface between man and computer etc.; When the user need obtain when unblanking information from end device 31; Send request signal to arm processor by end device 31, arm processor is sent to DBM 30 with this request signal, and DBM 30 will be stored in its inner information of unblanking and send to end device 31 through arm processor and check for the user.In the present embodiment, DBM 30 sends the form of the information of unblanking for sending through http protocol with form web page.Can imagine ground,, can use data storage area that arm processor carries as the DBM among the present invention 30 because arm processor carries data storage function.
Please with reference to Fig. 5, Fig. 5 is the structural representation of another embodiment of data-storage system 3.Among Fig. 5, electronic lock system 2 and DBM 30 all are integrated in the lock end 1000, and a plurality of lock ends 1000 are respectively with router or switch is two-way is connected router or switch and 31 two-way connections of end device.This moment, end device 31 can be monitored the information of unblanking of a plurality of lock ends 1000, formed a complete supervisory system, and person easy to use grasps information comprehensively.
The present invention adopts the mode of optical communication to realize unlocking function, and its transfer rate is up to the per second gigabit, and optical communication employing transmission of visible light transmission of data, and its data should not be disturbed and catch, and the while optical communication equipment is made simply, not fragile or demagnetization.Compare radio-frequency technique; Because the frequency range of wireless electromagnetic wave communication is occupied more, available frequency band is less, and the frequency spectrum resource of optical communication is abundant; The deviser can choose at random that the frequency of suitable operative scenario designs, and optical communication can be used any communication protocol, be applicable to any environment.Further; The present invention also utilizes database storage techniques, with the information stores of unblanking of each lock end, the user can through end device open-and-shut opening, opening time and the warning message etc. of release end; Be convenient to maintenance and management, performance also can tighten security.
The present invention also provides a kind of visible light communication method, and the process flow diagram of this communication means is as shown in Figure 6.This method comprises:
S1: unlocking cipher is launched with visible light signal;
Particularly, unlocking cipher is compiled as binary data earlier, and compile mode can be the Manchester's cde mode; Binary data is converted into the lower edge trigger pip, and last lower edge trigger pip drives the light signal transmitter module and sends visible light signal.
S2: receive said visible light signal, said visible light signal comprises the LED light signal;
S3: convert said visible light signal into current signal, convert said current signal into voltage signal, convert said voltage signal into digital signal;
Particularly; Voltage signal is at first solved the average of its magnitude of voltage; Then distinguish each magnitude of voltage and this average of comparative voltage signal; Output digital signal " 1 " when the magnitude of voltage of a certain voltage signal in the voltage signal is higher than average is when the magnitude of voltage of a certain voltage signal in voltage signal output digital signal " 0 " during less than average.
S4: with digital signal decoding is unlocking cipher and to judge whether said unlocking cipher meets pre-conditioned, then controls electronic lock and opens if meet;
Digital signal decoding is among decoding process and the step S1 of unlocking cipher that the coded system of unlocking cipher compiling is corresponding, in the present embodiment, all adopts Manchester's cde mode or decoding process.
Among the present invention, optical communication method also can comprise data storage and check step.Particular flow sheet is as shown in Figure 7.Behind the step S4, also comprise the step of unblanking information stores to DBM and checking this information of unblanking through end device.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method; Be to instruct relevant hardware to accomplish through computer program; Described program can be stored in the computer read/write memory medium; This program can comprise the flow process like the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
Above disclosedly be merely preferred embodiment of the present invention, can not limit the present invention's interest field certainly with this, the equivalent variations of therefore doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (10)
1. data-storage system based on visible light communication; It is characterized in that: comprise the light signal emission coefficient that is used to launch light signal; Be used for said light signal conversion digital signal and according to the electronic lock system of said digital signal unlocking electronic lock, be used for storing and check the unblank data-storage system of information of said electronic lock system; Said data-storage system comprises and is used to store said database of information module and the end device that is used to read the said information of unblanking of unblanking.
2. data-storage system as claimed in claim 1 is characterized in that: said DBM is transferred to said end device with form web page through http protocol with the said information of unblanking.
3. according to claim 1 or claim 2 data-storage system; It is characterized in that: said data-storage system also comprises router or switch; Said electronic lock system and said DBM are integrated in the lock end; Said lock end is a plurality of, and a plurality of lock ends are with said router or switch is two-way is connected, and the information of unblanking in a plurality of lock ends returns to said end device through said router or switch.
4. according to claim 1 or claim 2 data-storage system; It is characterized in that: said light signal emission coefficient comprises the light signal transmitter module that is used for the visible emitting signal; The memory module that is used for preset unlocking cipher; Be used for said unlocking cipher is compiled as the collector of binary data; Be used for said binary data is converted into the signal conversion module of lower edge trigger pip, be used for driving the driver module of said light signal transmitter module visible emitting signal according to said upward lower edge trigger pip.
5. data-storage system as claimed in claim 4 is characterized in that: said electronic lock system comprises electronic lock; The optical signal detecting module that is used to detect said light signal emission coefficient visible light emitted signal and is converted into current signal; Be used for said current signal is converted into the voltage signal modular converter of voltage signal; Be used for obtaining the digital signal acquisition module of digital signal according to said voltage signal; Be used for said digital signal decoding is the decoder module of unlocking cipher; Be used to judge whether the unlocking cipher that decoding obtains meets pre-conditioned signal judge module, give said electronic lock when meeting when pre-conditioned the output unlocking signal.
6. data-storage system as claimed in claim 5; It is characterized in that: said digital signal acquisition module comprises operational amplifier and comparer; Said voltage signal exports said operational amplifier and said comparer respectively to; Said operational amplifier is exported average volt value to the said comparer of said voltage signal; Said comparer is compared the volt value and the said average volt value of said voltage signal, output digital signal " 1 " when the volt value of said voltage signal is higher than said average volt value, output digital signal " 0 " when the volt value of said voltage signal is lower than said average volt value.
7. data-storage system as claimed in claim 5 is characterized in that: when not meeting when pre-conditioned, said signal judge module is failure to actuate or said signal judge module output alarm information.
8. data-storage system as claimed in claim 5 is characterized in that: the said information of unblanking is opening, the switching time of said electronic lock.
9. a visible light communication method is characterized in that: comprise
Unlocking cipher is launched with visible light signal;
Receive said visible light signal, said visible light signal comprises the LED light signal;
Convert said visible light signal into current signal, convert said current signal into voltage signal, convert said voltage signal into digital signal;
With digital signal decoding is unlocking cipher and to judge whether said unlocking cipher meets pre-conditioned, then controls electronic lock and opens if meet.
10. visible light communication method as claimed in claim 9; It is characterized in that: said unlocking cipher is compiled as binary data; Said binary data is converted into the lower edge trigger pip, and the said lower edge trigger pip driving light signal transmitter module of going up sends visible light signal.
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| CN106656329A (en) * | 2017-02-10 | 2017-05-10 | 华成军 | Visible light communication system and method |
| CN106920312A (en) * | 2017-04-20 | 2017-07-04 | 成都步共享科技有限公司 | A kind of flash lamp unlocking apparatus and method for unlocking for sharing bicycle |
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Application publication date: 20120725 |