CN103839310B - Gate inhibition's secrecy identifying system based on spatial light modulator - Google Patents
Gate inhibition's secrecy identifying system based on spatial light modulator Download PDFInfo
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- CN103839310B CN103839310B CN201210491542.4A CN201210491542A CN103839310B CN 103839310 B CN103839310 B CN 103839310B CN 201210491542 A CN201210491542 A CN 201210491542A CN 103839310 B CN103839310 B CN 103839310B
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Abstract
The invention discloses a kind of gate inhibition's secrecy identifying system based on spatial light modulator, it：Including lock body 11 and key 12.Described lock body 11 includes optical window 13, spatial light modulator 14, CCD faces array module 15, locking mechanical action motor 16, signal processing circuit 17, lock body memory module 18, initial secret key setting apparatus 19, lock body power module 110, modulator drive module 111 and key module for reading and writing 112；Key 12 includes：Power module 113, key memory module 114, lasing light emitter 115 and light beam collimation lens 116.The beneficial effects of the invention are as follows：Spatial light modulator is applied to gate inhibition's secrecy identifying system, employs two-dimensional space coding so that gate control system has more preferable confidentiality and error correcting capability.
Description
Technical field
The present invention relates to optical information processing technical field, and in particular to a kind of gate inhibition based on spatial light modulator, which maintains secrecy, to be known
Other system.
Background technology
In recent years, the awareness of safety of people constantly strengthens, and has gate control system in many occasions to prevent security incident
Generation.At present there are various gate control systems in the country, such as《The design of wireless access control system based on RFID technique》
Door lock is opened by way of radio communication；《The intelligent household access control system to be communicated based on recognition of face with 3G》With《Intelligently refer to
Line gate control system》It is that Land use models identify that the mode of biological characteristic opens door lock；《Photoelectric intelligent door safety system》When by infrared
Chest card or infrared key open door lock；《Modulated reflecting type optical access control system》It is to open door using piezoelectric device reflected light
Lock.
These above-mentioned technologies, all it is into a serial data, so such as bar none by the character representation of unlocking key
There is deviation in fruit wherein data, and door lock can not just be opened, such as often occur the fingerprint of same person in fingerprint entrance guard system
Can be opened gate control system.The one-dimensional characteristic serial data of key is converted into Quick Response Code will avoid that gate control system can not be opened
Occur, while improve the security of gate control system.
On the one hand, it has been widely used using Quick Response Code as condition code, it has superpower fouling resistance ability and error correction
Ability, storage volume are big and the distinguishing feature such as can encode to any computer digit information, and the bit error rate be less than million/
One.On the other hand, input picture or signal can be expressed as the optics or electricity of each junior unit in space by spatial light modulator
Input signal, and change optical characteristics (phase, amplitude, intensity, frequency or the polarization state of itself using various physical effects
Deng), so as to realize spatial modulation or the conversion to inputting light wave, so as to which gate inhibition's key information is converted into two-dimensional space light modulation
Information.
The content of the invention
Problem to be solved by this invention is：A kind of gate inhibition's secrecy identifying system based on spatial light modulator is provided, will
Key information is converted to two-dimensional space light modulation information, has more preferable confidentiality and error correcting capability.
Technical problem provided by the present invention so solves：A kind of gate inhibition's secrecy based on spatial light modulator is provided
Identifying system, it is characterised in that：Including lock body 11 and key 12.Described lock body 11 include optical window 13, spatial light modulator 14,
CCD faces array module 15, locking mechanical action motor 16, signal processing circuit 17, lock body memory module 18, the setting of initial secret key
Device 19, lock body power module 110, modulator drive module 111 and key module for reading and writing 112；Key 12 includes：Power module
113rd, key memory module 114, lasing light emitter 115 and light beam collimation lens 116.
Further, described lasing light emitter 115 is semiconductor laser.
Further, described initial secret key setting apparatus 19 can be digital keys input unit or fingerprint image
As collector, initial secret key is written in lock body memory module 18 and key memory module 114 by it simultaneously.
Further, described spatial light modulator 14 is phase type two dimensional spatial light modulator or amplitude type two-dimensional space
Optical modulator.
Further, described modulator drive module 111 reads the initial secret key in key memory module 114 to modulate
Spatial light modulator 14, by the initial key information in key memory module 114 be converted to two-dimensional space optical phase information or
Two-dimensional space light amplitude information.
Further, the two dimensional image that described signal processing circuit 17 receives CCD faces array module 15 encodes letter
Breath carries out decoding process, judge the key information that is obtained after decoding process and the initial secret key in lock body memory module 18 whether one
Cause, control whether locking mechanical action motor 16 carries out door-lock opening operation according to judged result.
The present invention proposes a kind of gate inhibition's secrecy identifying system based on spatial light modulator, beneficial effects of the present invention
It is：
(1) error correcting capability and recognition capability are improved.One-dimensional keyed feature serial data can be converted into Quick Response Code, two dimension
Code has superpower fouling resistance ability and error correcting capability.
(2) any coding digital information be can serve as into secret key, usability is extensive, and the bit error rate is low.Spatial light is adjusted
Device processed can realize the spatial modulation or conversion to inputting light wave, so as to which gate inhibition's key information is converted into two-dimensional space light modulation
Information, the bit error rate are less than hundred a ten thousandths.
Brief description of the drawings
Fig. 1 is the attachment structure schematic diagram of the present invention；
Fig. 2 is a kind of threshold property of spatial light modulator of the present invention；
Fig. 3 is signal processing circuit schematic diagram in the present invention；
Fig. 4 is an example of Quick Response Code in the present invention.
Wherein, 11, lock body, 12, key, 13, optical window, 14, spatial light modulator, 15, CCD faces array module, 16, locking
Mechanical action motor, 17, signal processing circuit, 18, lock body memory module, 19, initial secret key setting apparatus, 110, lock body power supply mould
Block, 111, modulator drive module, 112 key module for reading and writing, 113, power module, 114, key memory module, 115, laser
Source, 116, light beam collimation lens, 31, filtering shaping circuit, 32, detecting circuit, 33, threshold decision circuit, 34, single-chip microcomputer, 35,
Motor-drive circuit.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings, and gate inhibition's secrecy identifying system based on spatial light modulator makes
With being segmented into two steps：
The first step：Set initial secret key.Key memory module 114 is inserted into key module for reading and writing 112 first, initially
Initial secret key is converted into Quick Response Code (for example by secret key setting apparatus 19 by digital keys input unit or fingerprint image acquisition device
GM codes, QR codes etc.) while be written in lock body memory module 18 and key memory module 114, set original two-dimensional code secret key
Key 12 afterwards is extracted.
Second step：Unlocking operation.The key memory module 114 for the key 12 for setting secret key is inserted into the key of lock body 11
In spoon module for reading and writing 112 and press the power module 113 of lasing light emitter 115 and switch.Laser is carried out by light beam collimation lens 116
Collimation processing, then incides in CCD faces array module 15 from the approach spatial light modulator 14 of optical window 13, inspires electric signal,
After signal processing circuit 17 receives initial electrical signal, that is, start unlocking work.
Modulator drive module 111 reads original two-dimensional code key information from key module for reading and writing 112.Modulator drives mould
Block 111 can be that phase type spatial light is adjusted using obtained Quick Response Code key information modulation spatial light modulator 14, modulation system
Device or amplitude type spatial light modulator processed.The Modulation and Amplitude Modulation of utilization space optical modulator in this example embodiment, it is desirable to space
Optical modulator has very steep response characteristic to write-in light, has very steep input/output characteristic curve in other words, such as Fig. 2 institutes
Show.When write signal is less than IoWhen, export as 0；When write signal is more than IoWhen, output is expressed as 1.So utilization space light is adjusted
Device processed just forms Quick Response Code as shown in Figure 4.Quick Response Code feature is irradiated to CCD faces array by laser by spatial light modulator 14
In module 15, electric signal is converted to.The two dimensional image that signal processing circuit 17 receives CCD faces array module 15 encodes letter
Breath, after filtering after shaping circuit 31, detecting circuit 32 and threshold decision circuit 33, single-chip microcomputer 34 judges that decoding process obtains
Key information and the initial secret key in lock body memory module 18 it is whether consistent, according to judged result to motor-drive circuit control
35 send instruction, allow motor-drive circuit 35 to be made whether to open the action of door lock to locking mechanical action motor 16.
It is can be seen that from above-mentioned realizing in example and space two-dimensional code be modulated into by the laser of spatial light modulator 14,
Because Quick Response Code has superpower fouling resistance ability and error correcting capability, storage volume big and any computer digit information can be encoded
Etc. distinguishing feature, and the bit error rate is less than hundred a ten thousandths.So gate inhibition's secrecy identifying system based on spatial light modulator, is adopted
With two-dimensional space coding so that gate control system has more preferable confidentiality and error correcting capability.
It should be understood that the above embodiments are merely to illustrate technical scheme rather than its limitations.Therefore, this hair
It is bright to include all that the changes, modifications and variations in scope.
Claims (1)
- A kind of 1. gate inhibition's secrecy identifying system based on spatial light modulator, it is characterised in that：Including lock body (11) and key (12)；It is dynamic that described lock body (11) includes optical window (13), spatial light modulator (14), CCD faces array module (15), locking machinery Make motor (16), signal processing circuit (17), lock body memory module (18), initial secret key setting apparatus (19), lock body power module (110), modulator drive module (111) and key module for reading and writing (112)；Key (12) includes：Power module (113), key Memory module (114), lasing light emitter (115) and light beam collimation lens (116)；Described lasing light emitter (115) is semiconductor laser； Described initial secret key setting apparatus (19) can be digital keys input unit or fingerprint image acquisition device, and it will be just Beginning secret key is written in lock body memory module (18) and key memory module (114) simultaneously；Described spatial light modulator (14) It is phase type two dimensional spatial light modulator or amplitude type two dimensional spatial light modulator；Described modulator drive module (111) reads the initial secret key in key memory module (114) and adjusted to modulate spatial light Device (14) processed, the initial key information in key memory module (114) is converted into two-dimensional space optical phase information or two dimension Spatial light amplitude information；Described signal processing circuit (17) is decoded the two dimensional image coding information that CCD faces array module (15) receives Processing, judge whether the key information that is obtained after decoding process and the initial secret key in lock body memory module (18) are consistent, according to Judged result controls whether locking mechanical action motor (16) carries out door-lock opening operation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210491542.4A CN103839310B (en) | 2012-11-28 | 2012-11-28 | Gate inhibition's secrecy identifying system based on spatial light modulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210491542.4A CN103839310B (en) | 2012-11-28 | 2012-11-28 | Gate inhibition's secrecy identifying system based on spatial light modulator |
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| CN103839310A CN103839310A (en) | 2014-06-04 |
| CN103839310B true CN103839310B (en) | 2017-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210491542.4A Active CN103839310B (en) | 2012-11-28 | 2012-11-28 | Gate inhibition's secrecy identifying system based on spatial light modulator |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104658087B (en) * | 2015-01-14 | 2017-09-05 | 殷思昊 | A kind of contact laser encoding anti-theft lock |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201539152U (en) * | 2009-10-26 | 2010-08-04 | 范根喜 | Photoelectric code lock system |
| CN102222378A (en) * | 2011-06-23 | 2011-10-19 | 高椿明 | Modulated reflecting type optical access control system |
| CN202347948U (en) * | 2011-10-21 | 2012-07-25 | 昆明理工大学 | Unlocking system using traditional holographic plate as key |
| CN202488544U (en) * | 2012-02-29 | 2012-10-10 | 深圳光启创新技术有限公司 | Mailbox control system, mobile terminal and mailbox control device |
| CN202976274U (en) * | 2012-11-28 | 2013-06-05 | 成都科达光电技术有限责任公司 | Door control restricted identification system based on spatial light modulator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001342759A (en) * | 2000-06-01 | 2001-12-14 | Katsumi Yoshino | Key for preventing vehicle theft and security system |
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2012
- 2012-11-28 CN CN201210491542.4A patent/CN103839310B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201539152U (en) * | 2009-10-26 | 2010-08-04 | 范根喜 | Photoelectric code lock system |
| CN102222378A (en) * | 2011-06-23 | 2011-10-19 | 高椿明 | Modulated reflecting type optical access control system |
| CN202347948U (en) * | 2011-10-21 | 2012-07-25 | 昆明理工大学 | Unlocking system using traditional holographic plate as key |
| CN202488544U (en) * | 2012-02-29 | 2012-10-10 | 深圳光启创新技术有限公司 | Mailbox control system, mobile terminal and mailbox control device |
| CN202976274U (en) * | 2012-11-28 | 2013-06-05 | 成都科达光电技术有限责任公司 | Door control restricted identification system based on spatial light modulator |
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| CN103839310A (en) | 2014-06-04 |
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