CN102693567A - Coding-decoding method based on communication of access control system - Google Patents

Coding-decoding method based on communication of access control system Download PDF

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Publication number
CN102693567A
CN102693567A CN2012101330298A CN201210133029A CN102693567A CN 102693567 A CN102693567 A CN 102693567A CN 2012101330298 A CN2012101330298 A CN 2012101330298A CN 201210133029 A CN201210133029 A CN 201210133029A CN 102693567 A CN102693567 A CN 102693567A
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level
signal
recognition data
visible light
low level
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CN2012101330298A
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Chinese (zh)
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CN102693567B (en
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刘若鹏
栾琳
李春来
许学君
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深圳光启创新技术有限公司
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Abstract

The invention discloses a coding-decoding method based on communication of an access control system. The method comprises the steps of encoding the obtained identification data by a mobile phone according to the following modes: differentiating high level groups by delay of low level, wherein each high level group represents signal by quantity of high level; combining signals of each group to obtain the coded identification data; detecting the signal of visual light by a control terminal; beginning to time when detecting the high level; when the continuing time of the high level is longer than a first preset span, recording the quantity of the high level representing signal; beginning to time when detecting the low level; when the continuing time of the low level is longer than a second preset span, judging ending of a group of signals; when the continuing time of the low level is longer than a third preset span, judging finishing receiving signals; and combining the received different groups of signals so as to obtain the identification data representing visible light. Therefore, the communication based on the visible light between the mobile phone and the receiving and control terminal of the access control system is realized.

Description

Decoding method based on gate control system communication

Technical field

The present invention relates to the gate control system communication technical field, be specifically related to a kind of decoding method based on gate control system communication.

Background technology

The wireless light communication technology is claimed the visible light communication again, and its high-frequency through led light source is glimmered and communicated, and has light to represent 1, unglazed representative 0, and its transfer rate is up to gigabit on the per second.Wireless light communication carries out data transmission through visible light, compares with microwave technology, and quite abundant frequency spectrum resource is arranged, and is that general microwave communication and radio communication are incomparable; Visible light communication can be suitable for any communication protocol, be applicable to any environment simultaneously; Aspect security, needn't worry that Content of Communication stolen by the people; The equipment of wireless light communication is convenient flexibly, and cost is very low, is fit to extensive popularization and application.

In the prior art, signal dutyfactor was uncertain when mobile phone had the LED lamp switch, but its low level time such as can control at performance.Therefore, can combine mobile phone and single-chip microcomputer performance,, realize that the mobile phone LED lamp sends the visible light signal of characterization data, but corresponding code encoding/decoding mode is not also arranged in the prior art, be applied in the gate control system through the coded system of special setting.

Summary of the invention

Embodiment of the present invention technical matters to be solved is, a kind of decoding method based on gate control system communication can be realized communicating by letter between mobile phone and the gate control system through visible light signal.

In order to solve the problems of the technologies described above, embodiment of the present invention provides a kind of decoding method based on gate control system communication, and said method comprises:

Mobile phone is encoded according to following mode to the recognition data that obtains: distinguish with low level delay between the high level group, each high level group is with the number expression signal of high level; Signal to each group makes up, the recognition data after obtaining to encode;

Receive the control end and detect visible light signal, when detecting high level, pick up counting, when duration of high level greater than the first Preset Time section, the number of the high level of record characterization signal; When detecting low level, pick up counting, when the low level duration greater than the second Preset Time section, be judged as one group of signal ended; When low duration greater than the 3rd Preset Time section, judge that signal receives to finish; The signal of respectively organizing that receives is made up, obtain the recognition data that visible light signal characterizes.

In the technique scheme, the performance that low level time can be controlled when utilizing the mobile phone LED lamp switch proposes a kind of coded system, with the number expression signal of high level, between the high level group to distinguish low level time delay.When obtaining recognition data such as the information of unblanking when mobile phone, adopt coded system provided by the invention, recognition data is encoded; Recognition data after will encoding then adopts the LED lamp to send; Receive control end visible light signal, when detecting high level, can judge the whether useful signal of reception through timing; If useful signal, then obtain the number of the high level of characterization signal according to duration of high level; Accordingly, when detecting low level, judge that according to low level duration signal one group of received finishes, receives and interrupt, or receive and finish.Therefore, utilize technical scheme of the present invention, can realize communicating based on visible light between mobile phone and the gate control system receipts control end.

Description of drawings

In order to be illustrated more clearly in embodiment of the present invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is embodiments more of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the decoding method process flow diagram based on gate control system communication that the embodiment of the invention one provides;

Fig. 2 is the synoptic diagram that concerns between the signal that provides of the embodiment of the invention and the level;

Fig. 3 is the decoding method process flow diagram based on gate control system communication that the embodiment of the invention two provides.

Embodiment

To combine accompanying drawing below, the technical scheme in the embodiment of the present invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on embodiment of 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.

Embodiment one,

Referring to Fig. 1, be the decoding method process flow diagram that the embodiment of the invention one provides based on gate control system communication, this coding method comprises:

S101: mobile phone is encoded according to following mode to the recognition data that obtains: distinguish with low level delay between the high level group, each high level group is with the number expression signal of high level.

Wherein, mobile phone is as the transmitting terminal of gate control system.

For example, each high level lasting time is 2ms, every group of maximum four high level, and every group of level number represented the 2bit signal, byte of four groups of signal indications.That is: when the high level number is 1 in one group of signal, represent 00; When the high level number was 2, representation signal 01 was when the high level number is 3 interval scale signals 10; When the high level number is 4, representation signal 11.The signal corresponding relation of high level number and representative is shown in table one:

Table one

The high level number 1 2 3 4 Signal (2bit) 00 01 10 11

S102: mobile phone makes up the signal of each group, the recognition data after obtaining to encode.Concern synoptic diagram between signal as shown in Figure 2 and the level; Four groups of signals among Fig. 2 represent 00,11,01,10 respectively; Be 30ms the low level time delay between each sets of signals, and the signal after the combination is that a byte binary form is shown: 00110110, and corresponding sexadecimal signal is 0x36.

S103: receive the control termination and receive visible light signal.

S104: when receiving the control end and detecting high level, pick up counting, when duration of high level greater than the first Preset Time section, the number of the high level of record characterization signal.

For example, when the I/O pin when detecting rising edge, pick up counting, when high level lasting time during, think effective signal greater than 1.5us, the duration of supposing each high level is 2ms, then can obtain the number of high level according to the duration of high level.

S105: when receiving the control end and detecting low level, pick up counting, when the low level duration greater than the second Preset Time section, be judged as one group of signal ended; When low duration greater than the 3rd Preset Time section, judge that signal receives to finish.

For example, when the I/O pin detects negative edge, pick up counting, the for example low level duration is 30ms, when low level duration during greater than 20ms, promptly thinks the end mark of one group of signal.Think when I/O pin low duration that signal receives during greater than 75ms and finish that perhaps signal receives and interrupts, and restarts detection signal.

S106: receive the control end signal of respectively organizing that receives is integrated, obtain the recognition data that visible light signal characterizes.

The code encoding/decoding mode that this embodiment provides, mobile phone be as transmitting terminal, with the number expression signal of high level, between the high level group to distinguish low level time delay.Receive the control end and judge the whether useful signal of reception, if useful signal, then obtain the number of the high level of characterization signal according to duration of high level through timing; Accordingly, when detecting low level, judge that according to low level duration signal one group of received finishes, receives and interrupt, or receive and finish.Therefore, utilize present embodiment can realize that mobile phone and gate control system receive between the control end based on the communicating by letter of visible light, thereby improve user experience.

Embodiment two,

Referring to Fig. 3, be a kind of decoding method process flow diagram that the embodiment of the invention two provides based on gate control system communication, this method comprises:

S201: mobile phone is provided with duration and each low level duration of each high level.For example, the duration that each high level is set is 2ms, and each low level duration is 30ms.

Wherein, mobile phone is as the transmitting terminal of gate control system.

S202: mobile phone is encoded according to following mode to the recognition data that obtains: distinguish with low level delay between the high level group, each high level group is with the number expression signal of high level.

For example, each high level lasting time is 2ms, every group of maximum four high level, and every group of level number represented the 2bit signal, byte of four groups of signal indications.That is: when the high level number is 1 in one group of signal, represent 00; When the high level number was 2, representation signal 01 was when the high level number is 3 interval scale signals 10; When the high level number is 4, representation signal 11.The signal corresponding relation of high level number and representative is shown in table one:

Table one

The high level number 1 2 3 4 Signal (2bit) 00 01 10 11

S203: mobile phone makes up the signal of each group, the recognition data after obtaining to encode.Concern synoptic diagram between signal as shown in Figure 2 and the level; Four groups of signals among Fig. 2 represent 00,11,01,10 respectively; Be 30ms the low level time delay between each sets of signals, and the signal after the combination is that a byte binary form is shown: 00110110, and corresponding sexadecimal signal is 0x36.

S204: the recognition data after mobile phone will be encoded through the LED lamp sends with the visible light form.Concrete, the recognition data after mobile phone will be encoded through the form of flash of light sends.

S205: receive the control end beginning of rising edge as a high level is set, negative edge is as a low level beginning.

S206: receive the control termination and receive visible light signal.

S207: when receiving the control end and detecting high level, pick up counting, when duration of high level greater than the first Preset Time section, the number of the high level of record characterization signal.

For example, when the I/O pin when detecting rising edge, pick up counting, when high level lasting time during, think effective signal greater than 1.5us, the duration of supposing each high level is 2ms, then can obtain the number of high level according to the duration of high level.

S208: when receiving the control end and detecting low level, pick up counting, when the low level duration greater than the second Preset Time section, be judged as one group of signal ended; When low duration greater than the 3rd Preset Time section, judge that signal receives to finish.

For example, when the I/O pin detects negative edge, pick up counting,,, promptly think the end mark of one group of signal when low level duration during greater than 20ms if the low level duration is 30ms.Think when I/O pin low duration that signal receives during greater than 75ms and finish that perhaps signal receives and interrupts, and restarts detection signal.

S209: receive the control end signal of respectively organizing that receives is integrated, obtain the recognition data that visible light signal characterizes.

S210: receive the control end recognition data and preset condition are compared, if recognition data and preset condition coupling are then controlled connected electric lock and unblanked.

Wherein, recognition data and preset condition coupling, comprising: recognition data is identical with preset condition; Perhaps there are corresponding relation in recognition data and preset condition.

In the present embodiment; The coded system that adopts embodiment one to provide, mobile phone is as the transmitting terminal of gate control system, with the number expression signal of high level; To distinguish low level time delay, the signal behind the coding is sent through the mobile phone LED lamp between the high level group.Receipts are controlled end to decoding from the visible light signal of mobile phone reception, supervise power according to the recognition data of decoding acquisition then, as if through the power of supervising, then control connected electric lock and unblank, thereby the realization mobile phone is unblanked the raising user experience.

Above disclosedly be merely part embodiment of the present invention, can not limit the present invention's interest field certainly, in concrete implementation process, can also different embodiment be made up, obtain other embodiment, repeat no more here with this.Therefore the equivalent variations of doing according to claim of the present invention still belongs to the scope that the present invention is contained.

Claims (10)

1. decoding method based on gate control system communication is characterized in that said method comprises:
Mobile phone is encoded according to following mode to the recognition data that obtains: distinguish with low level delay between the high level group, each high level group is with the number expression signal of high level; Signal to each group makes up, the recognition data after obtaining to encode;
Receive the control end and detect visible light signal, when detecting high level, pick up counting, when duration of high level greater than the first Preset Time section, the number of the high level of record characterization signal; When detecting low level, pick up counting, when the low level duration greater than the second Preset Time section, be judged as one group of signal ended; When low duration greater than the 3rd Preset Time section, judge that signal receives to finish; The signal of respectively organizing that receives is made up, obtain the recognition data that visible light signal characterizes.
2. method according to claim 1 is characterized in that, also comprise before the said method: mobile phone is provided with the duration of said low level time delay and said high level.
3. method according to claim 1 is characterized in that, after the recognition data behind the said acquisition coding, also comprises:
Recognition data after mobile phone will be encoded through the LED lamp sends with the visible light form.
4. method according to claim 1 is characterized in that, said receipts control end also comprises before detecting visible light signal:
The beginning of rising edge as high level is set, and negative edge is as low level beginning.
5. method according to claim 4 is characterized in that, after the recognition data that said acquisition visible light signal characterizes, also comprises:
Said recognition data and preset condition are compared, if said recognition data and preset condition coupling are then controlled connected electric lock and unblanked.
6. method according to claim 5 is characterized in that, said recognition data and preset condition coupling comprise:
Recognition data is identical with preset condition.
7. method according to claim 5 is characterized in that, said recognition data and preset condition coupling comprise:
There are corresponding relation in said recognition data and preset condition.
8. coding method according to claim 1 is characterized in that said signal is represented with binary mode.
9. method according to claim 8 is characterized in that the number of said every group of high level is less than or equal to 4.
10. method according to claim 8 is characterized in that, said every group of level number represented the 2bit signal.
CN201210133029.8A 2012-04-28 2012-04-28 Coding-decoding method based on communication of access control system CN102693567B (en)

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CN103559748A (en) * 2013-10-31 2014-02-05 华北水利水电大学 Visible light recognition lockset and control method for visible light recognition lockset
WO2014026601A1 (en) * 2012-08-13 2014-02-20 深圳光启创新技术有限公司 Optical signal processing apparatus and decoding method for optical signal reception control device
CN103714595A (en) * 2012-09-29 2014-04-09 深圳光启创新技术有限公司 Photon receiving end and decoding method
CN103793987A (en) * 2014-02-26 2014-05-14 东南大学 Remote control lock based on visible light communication technology
CN103795465A (en) * 2013-07-31 2014-05-14 深圳光启创新技术有限公司 Multi-stage amplitude modulation visible optical signal coding method and apparatus and decoding method and apparatus, and system
CN103812574A (en) * 2013-07-31 2014-05-21 深圳光启创新技术有限公司 Method, device and system for improving recognition rate of photon identity authentication system
WO2015014168A1 (en) * 2013-07-31 2015-02-05 深圳光启创新技术有限公司 Error retransmission mechanism-comprised methods, apparatuses and systems for transmitting and receiving visible light signal
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CN105471511A (en) * 2014-09-05 2016-04-06 深圳光启智能光子技术有限公司 Coding and decoding method for enhancing optical signal transmission reliability and device and system thereof
CN105471499A (en) * 2014-09-05 2016-04-06 深圳光启智能光子技术有限公司 Coding and decoding method for enhancing visible light signal transmission rate, mobile terminal and system
CN105654597A (en) * 2016-03-21 2016-06-08 文成县刀锋科技有限公司 Automatic charging LIFI (Light Fidelity) communication anti-theft energy-saving system
CN106327629A (en) * 2016-08-12 2017-01-11 广西大学 Method for controlling unlocking and locking by transmitting password through audio channel

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WO2014026601A1 (en) * 2012-08-13 2014-02-20 深圳光启创新技术有限公司 Optical signal processing apparatus and decoding method for optical signal reception control device
CN103714595B (en) * 2012-09-29 2015-04-15 深圳光启创新技术有限公司 Photon receiving end and decoding method
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KR20160037204A (en) * 2013-07-31 2016-04-05 쿠앙-치 이노베이티브 테크놀로지 리미티드 Multi-stage amplitude modulation-based methods, apparatuses and systems for coding and decoding visible light signal
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CN103812574A (en) * 2013-07-31 2014-05-21 深圳光启创新技术有限公司 Method, device and system for improving recognition rate of photon identity authentication system
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WO2015014168A1 (en) * 2013-07-31 2015-02-05 深圳光启创新技术有限公司 Error retransmission mechanism-comprised methods, apparatuses and systems for transmitting and receiving visible light signal
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US9780877B2 (en) 2013-07-31 2017-10-03 Kuang-Chi Innovative Technology Ltd. Multi-stage amplitude modulation-based methods, apparatuses and systems for coding and decoding visible light signal
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US10116420B2 (en) 2013-07-31 2018-10-30 Kuang-Chi Intelligent Photonic Technology Ltd. Error retransmission mechanism-comprised methods, apparatuses and systems for transmitting and receiving visible light signal
KR102082931B1 (en) * 2013-07-31 2020-04-23 쿠앙-치 이노베이티브 테크놀로지 리미티드 Multi-stage amplitude modulation-based methods, apparatuses and systems for coding and decoding visible light signal
CN103440697A (en) * 2013-09-09 2013-12-11 桂林理工大学 Light-operated door control method
CN103559748A (en) * 2013-10-31 2014-02-05 华北水利水电大学 Visible light recognition lockset and control method for visible light recognition lockset
CN103559748B (en) * 2013-10-31 2016-01-13 华北水利水电大学 A kind of visible ray identification lockset and visible ray identification lockset control method
CN103793987A (en) * 2014-02-26 2014-05-14 东南大学 Remote control lock based on visible light communication technology
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CN105471511B (en) * 2014-09-05 2018-08-31 深圳光启智能光子技术有限公司 A kind of decoding method, apparatus and system improving optical signal transmission reliability
CN105471499B (en) * 2014-09-05 2018-05-25 深圳光启智能光子技术有限公司 The decoding method and mobile terminal and system of raising visible light signal transmission rate
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