CN101205772B - Face-discrimination keyhole-free alarm burglar-proof door lock - Google Patents
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- CN101205772B CN101205772B CN2006101653227A CN200610165322A CN101205772B CN 101205772 B CN101205772 B CN 101205772B CN 2006101653227 A CN2006101653227 A CN 2006101653227A CN 200610165322 A CN200610165322 A CN 200610165322A CN 101205772 B CN101205772 B CN 101205772B
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Abstract
The invention relates to a human face identification non-lockhole alarm safe-guard door lock and belongs to the safe-guard door lockset field. The technical proposal of the invention is that: an infrared human face identification electronic control circuit consists of a digital signal processor DSP, a synchronous dynamic random access memory SDRAM, a flash memory FLASH, a horn, a key, a motor controller, a miniature direct current motor, a power source, an infrared camera shooting module which captures human face images, infrared transmitting and receiving diode and photodiode which is used for detection, an infrared light-emitting diode set which is taken as a fixed light source, a liquid crystal screen and a voice codec; a human face identification module is arranged inside the DSP, respectively connected with the infrared camera shooting module, the SDRAM, the FLASH and the liquid crystal screen through an external bus, and connected with the voice codec through a multi-channel buffer serial port; the voice codec is connected with the horn and connected with the infrared light-emitting diode set, the key and the motor controller through IO interfaces; the motor controller is connected with the miniature direct current motor which controls a clutch pin. The invention adopts infrared human face identification and has no lockhole, and performances are stable and reliable.
Description
Technical field
The present invention relates to a kind of alarm burglar-proof door lock, particularly relate to a kind of keyhole-free alarm burglar-proof door lock, belong to antitheft door lockset field through infrared face identification.
Background technology
Antitheft door begins to get on a large scale China's urban family from eighties of last century the nineties, and quite universal now, urban family is the antitheft door in a family almost, and wherein safe-guard door lock is the core key part that directly influences the antitheft door security.The anti-technical unlocking time of national Specification A level safe-guard door lock can not be less than 1 minute; The anti-technical unlocking time of B level safe-guard door lock can not be less than 5 minutes.Although above-mentioned standard is very low, most antitheft doors in the market still do not reach, generally just can be by light technical the opening of people in tens times in second.In recent years, antitheft door takes place again and again in many cities is opened by the lawless person is technical, implements the case of burglary, and the safety issue of antitheft door becomes increasingly conspicuous
Along with the fast development of electronic information technology, constantly to the development of high-tech intelligent direction, biometrics identification technology provides a kind of authentication means of high security to conventional lock for us.Like the fingerprint recognition three-dimensional of Chinese invention patent 200410011363.1 locking link gear safe-guard door lock, with the fingerprint identification technology first Application to safe-guard door lock; The fingerprint gate lock of patent of invention 200410016470.3, because there is inborn decortication in fingerprint, does wet defective such as point, refuse publishing, stability does not reach the requirement of antitheft door, and has still kept mechanical lockhole and standby key.Recognition of face is compared with fingerprint recognition as the focus in current living things feature recognition field, and remarkable advantages such as intuitive, convenience, untouchable, friendly, user's acceptance height are arranged, and being applied on the safe-guard door lock is the work of perfection.It is chip that patent 200420023559.8 adopts digital signal processor DSP, make embedded human face identification become possibility, but failing to solve the recognition of face performance receives visible light to influence bigger problem, can not be applied to the antitheft door field of high security.
Summary of the invention
Technical matters to be solved by this invention is, a kind of keyhole-free alarm burglar-proof door lock with infrared face recognition function is provided, and do not need standby key, and recognition performance is reliable and stable.
The present invention solves the problems of the technologies described above the technical scheme of taking, by digital signal processor DSP, synchronous dynamic random access memory SDRAM, flash memory FLASH, loudspeaker, button, electric machine controller, DC micromotor, power supply, the infrared photography module of catching facial image, the infrared receiving/transmission that is used to detect to pipe, forms infrared face as infrarede emitting diode group, LCDs and the audio coder & decoder (codec) of fixed light source and discerns electronic control circuit.The built-in face recognition module of digital signal processor DSP; Be connected with LCDs with infrared photography module, synchronous dynamic random access memory SDRAM, flash memory FLASH respectively through external bus; Connect audio coder & decoder (codec) through multichannel buffered serial port McBSP, audio coder & decoder (codec) connects loudspeaker, connects the input end of infrarede emitting diode group, button, electric machine controller through the IO mouth; Electric machine controller connects DC micromotor, DC micromotor control on-of pin; The infrared photography module is sent to digital signal processor DSP with the infrared face image, and the face recognition module in the digital signal processor DSP is carried out the recognition of face comparison, if comparison is passed through; Then the output of the IO mouth of digital signal processor DSP control electric machine controller is just changeed motor, drives on-of pin; Pinion wheel and toothed disc engagement, the outer handle of hand rotation, driven gear dish; Control main straight tongue of lock, straight tongue, day straight tongue, tiltedly tongue indentation, realize opening the door.
Further, the infrared photography module is equipped with lens group and image sensor chip, and an infrared filtering eyeglass is arranged in the lens group.
Further, in the electronic control circuit part, employing+5V direct supply is as primary power, and lithium battery is a reserve battery.
The invention has the beneficial effects as follows; Adopt infrared photography module, infrarede emitting diode group; Thoroughly eliminate the influence of luminous ray in traditional recognition of face, guarantee the stability and the reliability of infrared face identification, thereby thoroughly realize no lockhole, no standby key; Automatically catch, store unauthorized person and sound out the image that opens the door, and send alarm sound automatically; Infrared face recognition technology is applied on the safe-guard door lock, and intuitive and convenient has unique high security.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is the structure of electronic control circuit of the present invention and the block diagram of control DC micromotor.
Fig. 2 is the structural representation of infrared photography module of the present invention.
Fig. 3 is the spectral transmittance curve synoptic diagram of infrared filtering eyeglass of the present invention.
Fig. 4 is the theory diagram of on-of pin control monolock core three-dimensional link gear.
Fig. 5 is the structural representation of on-of pin in monolock core three-dimensional link gear.
Description of reference numerals:
The 1-image sensor chip, 2-infrared filtering eyeglass, the 3-lens group, the oblique tongue of 4-, 5-master's straight tongue of lock, 6-locks tongue, the straight tongue in 7-ground, 8-days straight tongues, 9-toothed disc, 10-on-of pin, 11-pinion wheel
Embodiment
Fig. 1 is the structure of electronic control circuit and the block diagram of control DC micromotor.As shown in Figure 1, electronic control circuit is divided into inside and outside two parts, and inside comprises digital signal processor DSP, synchronous dynamic random access memory SDRAM, flash memory FLASH, button, power supply, audio coder & decoder (codec), electric machine controller, DC micromotor.The outside comprises that infrared photography module, infrarede emitting diode group, infrared receiving/transmission are to pipe, LCDs, loudspeaker.
The present invention is primary processor with the digital signal processor DSP; The built-in face recognition module of DSP; Connect synchronous dynamic random access memory SDRAM, flash memory FLASH, infrared photography module and LCDs through external bus, and connect infraluminescence diode group, electric machine controller and button through the IO mouth.Present embodiment is primary processor with TMS320DM640, and highest point reason ability can reach 3200MIPS (MIPS), and its video port VP can directly connect the digital video input.
FLASH is used for stored programme and fixed data, and SDRAM is used for working procedure, and the storage ephemeral data, liquid crystal display screen display menu, image and operation information.Adopting resolution in the present embodiment is 176 * 220,2 inches LCDs.
The infrarede emitting diode group provides fixed light source; As fixed light source, thoroughly solve the low-light (level) problem with the infrarede emitting diode group, the illumination consistance the when registration of underwriter's face, recognition of face; And not influenced by any of luminous ray, even but in all normal and stable ground work at night.
DSP connects the infrared photography module through video port VP, carries out the infrared face image capturing.The infrared photography module is sent to DSP with the infrared face image, carries out the recognition of face comparison by the face recognition module among the DSP, if comparison is passed through, then the IO mouth of DSP is controlled electric machine controller, and DC micromotor drives on-of pin, realizes opening the door.When unauthorized person is soundd out when opening the door, if the recognition of face comparison frequency of failure surpasses 5 times continuously, then catch, store unauthorized person and sound out the image that opens the door, be convenient to examine verification afterwards, and send alarm sound automatically.
In addition, DSP connects audio coder & decoder (codec) through multichannel buffered serial port McBSP, outputs to loudspeaker, realizes alarm sound, operation indicating voice.Button comprises registration, deletion, three buttons of record, and under the guide of operation indicating voice, order is carried out user's recognition of face registration, registration deletion and checked the unauthorized person image recording.Infrared receiving/transmission is used for before the detecting gate nobody being arranged to pipe, realizes automatic switching, reduces system's quiescent dissipation greatly.
Present embodiment employing+5V direct supply is as power supply, and configuration reserve battery lithium battery.Through real-time battery voltage monitoring, carry out the Charge Management of reserve battery, the normal working hours that guarantees reserve battery when having a power failure was above 10 days.
Fig. 2 is the structural representation of infrared photography module of the present invention.The principle of work of infrared photography module and common shooting module are basic identical; All be to utilize light to impinge upon on the object reflection to image sensor chip, to form images through eyeglass; Difference is that common shooting module is to intercept infrared ray, allows luminous ray to pass through; And the infrared photography module is the block visible light line, allows infrared ray to pass through.Infrared photography module of the present invention comprises lens group 3 and image sensor chip 1, and an infrared filtering eyeglass 2 is arranged in the lens group, and infrared filtering eyeglass 2 can the block visible light line, allows infrared ray to pass through smoothly.Adopt the infrared photography module to make the shooting of people's face not rely on visible light, the light that has solved in traditional recognition of face influences problem, and in algorithm, has simplified processing such as image pre-service, light compensation, has reduced algorithm operation quantity.Present embodiment adopts the infrared photography module of 300,000 pixels.
Fig. 3 is the spectrum transmitting rate curve of infrared filtering eyeglass, and the planimetric coordinates horizontal direction is a wavelength, and vertical direction is a spectral transmittance.The wavelength of visible light scope approximately is 400-700nm, and 700-1200nm approximately is near infrared light (near infrared) zone.If the cutoff wavelength of infrared filtering eyeglass is λ, then the peak wavelength of infrarede emitting diode must be greater than λ, and the peak wavelength of infrarede emitting diode is generally 940-950nm on the market, is 800nm so select the cutoff wavelength λ of infrared filtering eyeglass.
Fig. 4 is the theory diagram of on-of pin control monolock core three-dimensional link gear.General typical monolock core three-dimensional link gear is made up of straight tongue mechanical drive assembly, oblique tongue mechanical drive assembly, handle knob mechanical drive assembly three parts, on this basis, increases on-of pin and controls as core.Straight tongue mechanical drive assembly comprise a day straight tongue, main straight tongue of lock, straight three straight tongues of tongue, comprise that also straight tongue stirs bar, directly tongue spring, tongue self-lock pin directly.Tiltedly tongue mechanical drive assembly comprises oblique tongue, tiltedly tongue is stirred bar and oblique tongue spring.Handle knob mechanical drive assembly comprises outer handle, interior handle, bump tongue, lock tongue, lock tongue stirs bar, locks tongue spring and indoor knob.
Fig. 5 is the structural representation of on-of pin in monolock core three-dimensional link gear.System catches facial image through the infrared photography module, carries out detection of people's face and human eye location, extracts face characteristic; And compare with the facial image data of storage, if compare successfully, digital signal processor DSP passes through the input end of IO connection electric machine controller; The output of control electric machine controller is just changeed motor, drives on-of pin 10; Pinion wheel 11 closes, and the outer handle of hand rotation this moment gets final product driven gear dish 9; Control main straight tongue of lock 5, straight tongue 7, day straight tongue 8, tiltedly tongue 4 indentations, realize opening the door.If DSP does not have other effective inputs in 5 seconds after opening the door, through the input end of IO connection electric machine controller, the output of control electric machine controller makes the motor counter-rotating, drives on-of pin 10, and pinion wheel 11 is thrown off.
The system chambers inward swinging door and the mode of locking a door are following: the interior handle in the turning cell, need not move on-of pin 10, and just can directly drive the spring on the clutch coupling, control three straight tongues, tiltedly tongue 4 withdrawals realize opening the door.Unclamp interior handle, tiltedly tongue 4 ejects, and three straight tongues are still in the door body.Outer handle is upwards lifted, can be driven monolock core three-dimensional link gear, control three straight tongues and stretch out, realize locking a door.
If the knob in indoor rotation below the handle, is then locked tongue 6 to closing and is ejected, antitheft door is locked, even outdoor recognition of face is compared successfully, rotate outer handle and can not door be opened.
The present invention adopts infrared photography module, infrarede emitting diode group fixed light source; The visible light influence and the low-light (level) problem of long-term puzzlement recognition of face have thoroughly been solved; The high stable reliability of infrared face identification; Be the strong guarantee that realizes no lockhole, no standby key safe-guard door lock, and can catch, store unauthorized person automatically and sound out the image that opens the door, send alarm sound automatically.The present invention has unique high security, convenience and untouchable, can be widely applied to medium-to-high grade antitheft door field.
Claims (4)
1. face-discrimination keyhole-free alarm burglar-proof door lock; Has on-of pin; Form electronic control circuit by digital signal processor DSP, synchronous dynamic random access memory SDRAM, flash memory FLASH, loudspeaker, button, electric machine controller, DC micromotor, power supply; It is characterized in that the infrared receiving/transmission that increase the infrared photography module catch facial image, is used to detect is formed infrared face identification electronic control circuit to pipe, infrarede emitting diode group, LCDs and audio coder & decoder (codec) as fixed light source; The built-in face recognition module of digital signal processor DSP; Be connected with LCDs with infrared photography module, synchronous dynamic random access memory SDRAM, flash memory FLASH respectively through external bus; Connect audio coder & decoder (codec), audio coder & decoder (codec) connection loudspeaker through multichannel buffered serial port McBSP; Connect infrarede emitting diode group, button, electric machine controller through the IO mouth, electric machine controller connects DC micromotor, and DC micromotor connects on-of pin; The infrared photography module is sent to digital signal processor DSP with the infrared face image, and the face recognition module in the digital signal processor DSP is carried out the recognition of face comparison, if comparison is passed through; Then the output of the IO mouth of digital signal processor DSP control electric machine controller is just changeed motor, drives on-of pin; Pinion wheel and toothed disc engagement, the outer handle of hand rotation, driven gear dish; Control main straight tongue of lock, straight tongue, day straight tongue, tiltedly tongue indentation, realize opening the door.
2. face-discrimination keyhole-free alarm burglar-proof door lock according to claim 1 is characterized in that the infrared photography module is equipped with lens group and image sensor chip, and an infrared filtering eyeglass is arranged in the lens group.
3. face-discrimination keyhole-free alarm burglar-proof door lock according to claim 1 is characterized in that, power supply employing+5V direct supply.
4. face-discrimination keyhole-free alarm burglar-proof door lock according to claim 1 is characterized in that, also comprises subsequent use lithium battery.
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| CN2006101653227A CN101205772B (en) | 2006-12-18 | 2006-12-18 | Face-discrimination keyhole-free alarm burglar-proof door lock |
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| CN2006101653227A CN101205772B (en) | 2006-12-18 | 2006-12-18 | Face-discrimination keyhole-free alarm burglar-proof door lock |
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| CN101205772A CN101205772A (en) | 2008-06-25 |
| CN101205772B true CN101205772B (en) | 2012-06-06 |
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Cited By (1)
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| CN102877710A (en) * | 2012-10-11 | 2013-01-16 | 合肥天智科技发展有限公司 | Campus induction card type door lock |
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| CN101521803B (en) * | 2008-12-15 | 2011-06-08 | 昆山锐芯微电子有限公司 | Safety door assembled with image monitoring system |
| CN101942936B (en) * | 2010-08-06 | 2012-11-07 | 电子科技大学 | Control method of lockup clutch state collecting circuit |
| CN101915025B (en) * | 2010-08-06 | 2012-11-07 | 电子科技大学 | Lock clutch state acquisition circuit and radio frequency identification electronic tag integrating same |
| CN102393977A (en) * | 2011-07-25 | 2012-03-28 | 苏州中研纺织科技有限公司 | Electronic door lock |
| CN102654001A (en) * | 2012-05-25 | 2012-09-05 | 宣建民 | Anti-theft door |
| CN102877707B (en) * | 2012-10-10 | 2016-05-25 | 上海精工科技有限公司 | Electric lock one is opening structure and open method |
| CN106157505A (en) * | 2015-03-25 | 2016-11-23 | 中兴通讯股份有限公司 | One is illegally entered the room alarm method and device |
| TWI820194B (en) * | 2018-08-31 | 2023-11-01 | 日商索尼半導體解決方案公司 | Electronic equipment and solid-state imaging devices |
| CN110173154A (en) * | 2019-05-27 | 2019-08-27 | 安徽桔子智能科技有限公司 | A kind of band clears up the Intelligent door lock capable of recognizing face of structure automatically |
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| CN101205772A (en) | 2008-06-25 |
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