CN102999957A - Safe case system based on ultrasonic wave imaging and recognition technology and key thereof - Google Patents
Safe case system based on ultrasonic wave imaging and recognition technology and key thereof Download PDFInfo
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- CN102999957A CN102999957A CN201210354366XA CN201210354366A CN102999957A CN 102999957 A CN102999957 A CN 102999957A CN 201210354366X A CN201210354366X A CN 201210354366XA CN 201210354366 A CN201210354366 A CN 201210354366A CN 102999957 A CN102999957 A CN 102999957A
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Abstract
The invention discloses a safe case system based on an ultrasonic wave imaging and a recognition technology and a key thereof. The safe case system based on the ultrasonic wave imaging and the recognition technology comprises an ultrasonic wave sensing module, an ultrasonogram image processing module, a central system module and a safety lock switch module, wherein the ultrasonogram image processing module can carry out imaging process according to the electrical signal received by the ultrasonic wave sensing module, and an imaging result is transferred to the central system module; the central system module can analyze the imaging information obtained from the imaging module, the imaging information is compared with deblocking image information in internal storage, and if the unblocking requirement is met, and the safety lock switch module sends an unlock signal; and a deblocking code of the key is hidden in the key in a graph or character form. The safe case system provided by the invention combines a computer technology and the ultrasonic wave imaging and the recognition technology, the safe case system has the advantage that the operation and management of the electronic safe case are convenient, the key is not easy to copy and fabricate, and the security is greatly improved.
Description
Technical field
The present invention relates to safety cabinet safety technique field, particularly based on its key of safe system of ultrasonic imaging and recognition technology.
Background technology
Along with socioeconomic fast development, people take in raising, and people's social life is day by day frequent, and the frequency of going out height, time are long, how to ensure that property safety has become people's question of common concern, safety cabinet becomes the safety sustenance part that people deposit valuables and classified papers.In the more common safety cabinet cabinet series products, the password of common employing has on the market: mechanical, electrical type, bio-identification class etc.
The characteristics of mechanical cipher safe are that password has adopted full mechanical, and properties of product are very reliable and stable, and product need not any maintenance all the life, so cost is low.And shortcoming is must to open according to fixing pattern when using, so operation change comparatively loaded down with trivial details and password need the professional to operate, password can not be specified.According to the characteristics of machine insurance cabinet, the machine insurance cabinet is fit to bank, and the occasion that family etc. do not need to change password is used.
The electrical type cipher safe is the main force in current safety cabinet market, and market share is the highest.Traditional electrical type cipher safe adopts keyboard entry type, and keypad is generally adopted in the input of password, and keycap has stationary digital and the difference of on-fixed numeral.Password needs memory, requires to prevent from giving away secrets with stolen.Along with the development of computer technology, the electrical type cipher safe develops a series of new-type electronic recognition technology, and common electronic recognition technology has: bar-code identification, magnetic card identification, IC-card identification, radio-frequency (RF) identification.New-type electronics recognition technology has that cost is lower, simple to operate, system intelligent and password arrange the advantages such as change is flexible.But the poor anti jamming capability of new-type electronics recognition technology, magnetic card are subject to high-intensity magnetic field easily to be disturbed, and IC-card is subjected to electrostatic interference easily, and rfid card is subjected to Electromagnetic Interference easily.
Emerging bio-identification safety cabinet life utilizes the intrinsic physiological property of human body (such as fingerprint, face picture, iris etc.) and behavioural characteristic (such as person's handwriting, sound etc.) to carry out personal identification and identifies by close combinations of high-tech means such as computing machine and light, sound, biology sensor and biostatistics principles.Biological identification technology has more safety, maintains secrecy and convenience than traditional identity identifying method.The biometrics identification technology tool is difficult for forgeing, anti-counterfeiting performance is good, be difficult for to forge or stolen, carry and the advantage such as available whenever and wherever possible.The bio-identification safety cabinet generally adopts fingerprint recognition, iris recognition and the identification of people's face:
(1) fingerprint recognition is the most ancient biometrics identification technology, has all obtained successful application in a lot of fields.Fingerprint recognition is mainly carried out identity authentication according to information such as the lines of somatic fingerprint, minutias to operation or the person of being operated.Everyone has own unique, constant fingerprint, fingerprint recognition is applied on the safety cabinet, and strong security, easy-to-use.
(2) people's face recognition technology is individual identification and the affirmation technology of carrying out according to the uniqueness characteristics of people's face feature.The uniqueness of people's facial characteristics, can be in that a certain one organ or position be embodied on the face, the more important thing is and the mutual relationships such as position, distance, angle, quantity, shape and pattern between these single features to be embodied, and these facial characteristics all have certain stability.
(3) iris recognition is the most convenient and accurate biological identification technology of current application.Iris is a ring-type viewable portion between pupil and sclera, has lifelong unchangeability and otherness, compares with other biological characteristic, and iris recognition has the advantages such as high uniqueness, high stability, antifalsification are good, usability, easy analysis.
Analyze in conjunction with the technical characterstic of the safety cabinet market demand and existing safety cabinet technology now, existing safety cabinet technology has the following disadvantages:
(1) mechanical code safety cabinet, complex operation, ease for use is poor, and number of password is few.Mechanical code safety cabinet development time is the longest, and it is the most ripe to crack technology, poor stability.
(2) electronic password safe, the electronic cipher interference free performance is poor, and unlocking pin is replicated easily or cracks, and has potential safety hazard.
(3) requirement of fingerprint recognition adversary's humidity is tighter, and easily fingerprint is stayed smooth article surface in the daily life, and there is the possibility that is used to copy fingerprint in fingerprint trace, reveals easily or is forged.
(4) identification of iris recognition and people's face all has discrimination height, untouchable, the difficult advantage of faking, but recognizer is complicated, and equipment cost is expensive, is not suitable for the general user.
The ultrasonic imaging recognition technology is a kind of new technology that attracts people's attention, and has been widely used in the modern Dynamic Non-Destruction Measurement.Ultrasound wave can detect the defective in the object, and determines its position, size, shape and character.Hyperacoustic dissemination is relevant with mechanical property and the quality of material in material, and the ultrasonoscopy of object can provide intuitively visual information.The ultimate principle of ultrasonic imaging identification is, ultrasound wave can occur than strong reflection by different acoustic impedance mediums interface the time, and the larger reflection of the difference between the medium will be larger, it is strong that an object is launched penetration power, ultrasound wave that can rectilinear propagation, then the ultrasound wave that reflects is received and according to these hyperacoustic priorities that reflects, the situations such as amplitude just can be judged the size of the various media that contain in this tissue, the information such as contrast difference degree between distribution situation and the various medium, the hyperacoustic priority that wherein reflects can reflect reflecting interface from the distance of searching surface, and amplitude then can reflect the size of medium, the characteristics such as contrast difference degree.
Summary of the invention
The object of the invention is to overcome the deficiency of existing safety cabinet technology, it is lower to propose a kind of cost, and higher its secret key of safe system based on ultrasonic imaging and recognition technology of safety coefficient.The ultrasound imaging techniques that the present invention can be widely used in the modern Dynamic Non-Destruction Measurement is applied to the safety cabinet password identification.Technical characteristics of the present invention is to utilize the interface place of ultrasonic irradiation to two kind of different medium to produce the characteristic of emission, refraction, scattering, diffraction, decay, is hidden in figure or the literal password of special secret key inside by ultrasound imaging techniques identification.Safe system fusion calculation machine technology of the present invention and ultrasonic imaging and recognition technology, the advantage that possesses electrical type safety cabinet convenient operation and management, it is inner simultaneously the safety cabinet password to be stored in special secret key with the form of figure or literal, special secret key is difficult for being replicated, forging, and greatly improves security.Ultrasonic imaging recognition technology cost is significantly less than biological identification technology, and accuracy of identification is high, can create complicated password, and is safe.
The present invention is achieved through the following technical solutions:
A kind of safe system based on ultrasonic imaging and recognition technology, described safe system based on ultrasonic imaging and recognition technology is contained on the safety cabinet main body, it is characterized in that: described safe system based on ultrasonic imaging and recognition technology comprises supersonic sensing module, ultrasonography processing module, central system module and safety lock switch module; Described ultrasonic sensor module comprises ultrasound transmitting transducer, ultrasound wave receiving transducer; Described ultrasound transmitting transducer for generation of and to special secret key directional transmissions ultrasound wave; Described ultrasound wave receiving transducer receives from the reflection wave of secret key and converts electric signal transmission to described ultrasonography processing module; Described ultrasonography processing module, the electric signal that receives according to the supersonic sensing module carries out imaging processing, and imaging results is transferred to central system module; Described central system module is analyzed the image-forming information that image-forming module obtains, and compares with the unlock image information of internal reservoir, as meets the release requirement and then send unlocking signal to the safety lock switch module.
Further, described ultrasonic sensor module comprises single transducer or the ultrasound transducer array that is comprised of multi-transducer.
Further, the integrated CPU of described central system module, storer, I/O interface, Power Management Unit have logical operation capability, and embedded OS is housed, and system can pass through I/O Interface Expanding peripherals.
Further, the unlocking pin of secret key is hidden in secret key inside by the form of figure or literal.
Further, secret key comprises the core that stores figure or literal password and the shell that is used for this core of encapsulation.Described core hollow out forms pattern or literal or selects the different material of acoustic impedance to form pattern or literal
Compared with prior art, the present invention has the following advantages:
(1) compare with traditional mechanical code safety cabinet, the present invention adopts the intellectualizing system management, convenient operation and management, and ease for use and dirigibility are strong.
(2) compare with electrical type safety cabinet technology, the special secret key that the present invention proposes provides a kind of safer, complicated password storing mode.
(3) compare with bio-identification safety cabinet technology, equipment investment and the cost of use of the tripper based on ultrasonic imaging and recognition technology of the present invention are relatively low, are fit to the general user and use, and Popularizing of A is large.
(4) antijamming capability is strong, is not subjected to electromagnetic interference (EMI), can adapt to various neighbourhood noises.
(5) the ultrasonic sensor module can adopt the ultrasonic phased array technology, can further improve the imaging accuracy of identification, can design more release figure or the literal password of complex precise, further improves the cryptosecurity coefficient.
Description of drawings
Fig. 1 is the secret key structural representation that is used for ultrasound wave identification in the embodiment.
Fig. 2 is the theory diagram based on the safe system of ultrasonic imaging and recognition technology in the embodiment.
Fig. 3 is the release process flow diagram in the embodiment.
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing, but the scope of protection of present invention is not limited to the scope of embodiment statement.
The described secret key structure of present embodiment comprises the core of stored password and is used for the housing parts of encapsulation as shown in Figure 1.Above-mentioned special secret key can be by following technique manufacturing: the figure on the core or literal password can realize that by the kinds of processes method for example hollow out forms pattern, perhaps select the material different from the core acoustic impedance to form pattern.After finishing the core, use solid material that the core is encapsulated, the core is hidden in enclosure, the figure on the core or literal password can only carry out imaging identification by the mode of ultrasonic scanning.Special secret key can as required, encapsulate the article such as the ornaments that disguise oneself as, normal key, USB flash disk by specific shell.
Safe system based on ultrasonic imaging and recognition technology of the present invention is installed on the safe body with safety door, described safe system based on ultrasonic imaging and recognition technology, system module and annexation thereof comprise ultrasonic sensor module, ultrasonography processing module, central system module and safety lock switch module as shown in Figure 2.
Above-mentioned ultrasonic sensor module comprises ultrasound transmitting transducer and ultrasound wave receiving transducer.The transducer number can according to the demand of imaging accuracy of identification, adopt single ultrasonic transducer or ultrasonic transducer array.For the high password of complexity, can adopt ultrasonic phased array technology, use array energy transducer, and by adjusting the phase delay of each array element transmitting/receiving signal, the curvature of control composite wave front, sensing, aperture etc., reach the multiple phased effects such as wave beam focusing, deflection, wave beam formation, form more clearly imaging, further improve the imaging accuracy of identification.
Above-mentioned ultrasonography processing module comprises the DSP process chip of transmitted wave being carried out analog-to-digital analog-to-digital conversion device (A/D) and operation ultrasonic imaging algorithm.
Above-mentioned central system module can adopt the FPGA technology.Comprise the necessary modules of system such as CPU, storer, I/O interface, Power Management Unit based on programmable system on the SOPC sheet of FPGA, have flexible design, can reduce, extendible, scalable, software and hardware is in the function of system programmable.Center system I/O interface comprises USB interface, serial communication interface and network interface.Center system peripherals also is provided with LCD display, touch control operation equipment and audio output apparatus.
A specific embodiment of the safe system based on ultrasonic imaging and recognition technology of the present invention:
The ultrasonic sensor module adopts the ultrasonic phase array of 4 passages, 16 array elements, comprises phase-controlled ultrasonic wave transmitting transducer and receiving transducer.The ultrasonography processing module comprises analog-to-digital conversion device (A/D) and DSP process chip, and reflection wave is carried out analog to digital conversion and operation ultrasonic imaging algorithm.Central system module adopts the FPGA technology, adopts the ARM series processors as central processing unit, connects ROM reservoir, RAM reservoir, Power Management Unit and I/O interface, and (SuSE) Linux OS is installed.Power Management Unit comprises AC/DC change-over circuit and UPS back-up source, and every day use switches the UPS back-up source by the external power source of AC/DC conversion when external power source fault or power failure occur, to guarantee system's normal operation.Central system module based on FPGA passes through expansion, adds LCD touch display screen, audio output apparatus and radio network interface.The LCD touch display screen shows the operation interface of center system, the running status of display system.Add touch function, for the user provides a kind of intuitively man-machine interaction mode, by touch function, system is carried out setting operation.Except touching input, the invention is not restricted to adopt the button keyboard equipment, voice operating equipment provides control inputs.Audio output apparatus can send prompt tone or alarm tone according to the instruction of system.The radio network interface of central system module, the user can carry out remote monitoring and administration to system by the internet, and when illegal invasion occured, system can send warning information to the user by internet, cell phone network.Center system adopts intelligent management, the user can be by Telnet or LCD touch screen operation input system administrator's password, after obtaining system's highest weight limit, the user can delete, adds or change system's release image information, revise administrator's password, the change alarm tone, the operation of the defaults such as warning information binding specified mobile phone number.
Release workflow of the present invention is as shown in Figure 3:
When step 1 user need to open safety cabinet, special secret key is inserted the ultrasonic scanning groove, the user proposes unlocking request by touch-screen to system.
Transmitting transducer in the step 2 ultrasonic sensor module is to the special secret key directional transmissions ultrasound wave that scans in the groove, the ultrasound wave of transmitting transducer emission reflects in special secret key inside, receiving transducer receives the reflection wave of special secret key, and convert electric signal to, be transferred to image processing module.
Analog-to-digital conversion device (A/D) in step 3 image processing module carries out the A/D sampling, is quantized into digital signal the transmitted wave electric signal, and then the DSP process chip is calculated according to ultrasonic imaging and processed, and the generating digital image also is transferred to central system module.
After step 4 central system module received the digital picture of special secret key inside, system read unlock image information default in the reservoir, and the unlock image information of special secret key internal digital image and user's setting is analyzed comparison.
Step 5 verification is sent unlocking signal by rear central system module to the safety lock module, carries out release, and LCD display shows the information of release success simultaneously, and audio frequency apparatus sends release success prompt tone.
Claims (6)
1. safe system based on ultrasonic imaging and recognition technology, described safe system based on ultrasonic imaging and recognition technology is contained on the safety cabinet main body, it is characterized in that: described safe system based on ultrasonic imaging and recognition technology comprises supersonic sensing module, ultrasonography processing module, central system module and safety lock switch module; Described ultrasonic sensor module comprises ultrasound transmitting transducer, ultrasound wave receiving transducer; Described ultrasound transmitting transducer for generation of and to special secret key directional transmissions ultrasound wave; Described ultrasound wave receiving transducer receives from the reflection wave of secret key and converts electric signal transmission to described ultrasonography processing module; Described ultrasonography processing module, the electric signal that receives according to the supersonic sensing module carries out imaging processing, and imaging results is transferred to central system module; Described central system module is analyzed the image-forming information that image-forming module obtains, and compares with the unlock image information of internal reservoir, as meets the release requirement and then send unlocking signal to the safety lock switch module.
2. the safe system based on ultrasonic imaging and recognition technology according to claim 1, it is characterized in that: described ultrasonic sensor module comprises single transducer or the ultrasound transducer array that is comprised of multi-transducer.
3. the safe system based on ultrasonic imaging and recognition technology according to claim 1, it is characterized in that: the integrated CPU of described central system module, storer, I/O interface and Power Management Unit, and embedded OS is housed, the I/O interface is used for expansion peripherals.
4. secret key that is used for the described safe system based on ultrasonic imaging and recognition technology of claim 1, it is characterized in that: the unlocking pin of secret key is hidden in secret key inside by the form of figure or literal.
5. secret key according to claim 4 is characterized in that: secret key comprises the core that stores figure or literal password and the shell that is used for this core of encapsulation.
6. secret key according to claim 5 is characterized in that: described core hollow out forms pattern or literal or selects the different material of acoustic impedance to form pattern or literal.
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| CN201210354366.XA CN102999957B (en) | 2012-09-22 | 2012-09-22 | Based on safe system and the secret key thereof of ultrasonic imaging and recognition technology |
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| CN201210354366.XA CN102999957B (en) | 2012-09-22 | 2012-09-22 | Based on safe system and the secret key thereof of ultrasonic imaging and recognition technology |
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| CN102999957B CN102999957B (en) | 2015-07-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105335424A (en) * | 2014-08-06 | 2016-02-17 | 李江波 | Rotary cabinet operation information display control method |
| WO2017028223A1 (en) * | 2015-08-18 | 2017-02-23 | 常平 | Voice-controlled express-delivery temporary storage device and method for using voice-controlled express-delivery temporary storage device |
| CN110287866A (en) * | 2019-06-24 | 2019-09-27 | Oppo广东移动通信有限公司 | Ultrasonic fingerprint recognition methods, device, storage medium and electronic equipment |
| CN114165134A (en) * | 2022-01-19 | 2022-03-11 | 中恒国通有限公司 | Intelligent confidential cabinet with face recognition function |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4593185A (en) * | 1983-02-18 | 1986-06-03 | Zeiss Ikon Ag | Safety lock |
| EP0227412A2 (en) * | 1985-12-18 | 1987-07-01 | Motohiro Gotanda | Door lock device for automobile |
| US6055079A (en) * | 1997-08-07 | 2000-04-25 | The Regents Of The University Of California | Optical key system |
| CN1975765A (en) * | 2006-11-28 | 2007-06-06 | 天津大学 | Electronic certificate based on human body double-biological characteristic and certificate holder identity recognition integrated machine |
| CN101245688A (en) * | 2007-02-15 | 2008-08-20 | 上海银晨智能识别科技有限公司 | Human face recognizing anti-tailing gate inhibition system |
| CN102509372A (en) * | 2011-11-08 | 2012-06-20 | 广州宝胆医疗器械科技有限公司 | Color-Doppler-ultrasonic-scanning-based antitheft system |
-
2012
- 2012-09-22 CN CN201210354366.XA patent/CN102999957B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4593185A (en) * | 1983-02-18 | 1986-06-03 | Zeiss Ikon Ag | Safety lock |
| EP0227412A2 (en) * | 1985-12-18 | 1987-07-01 | Motohiro Gotanda | Door lock device for automobile |
| US6055079A (en) * | 1997-08-07 | 2000-04-25 | The Regents Of The University Of California | Optical key system |
| CN1975765A (en) * | 2006-11-28 | 2007-06-06 | 天津大学 | Electronic certificate based on human body double-biological characteristic and certificate holder identity recognition integrated machine |
| CN101245688A (en) * | 2007-02-15 | 2008-08-20 | 上海银晨智能识别科技有限公司 | Human face recognizing anti-tailing gate inhibition system |
| CN102509372A (en) * | 2011-11-08 | 2012-06-20 | 广州宝胆医疗器械科技有限公司 | Color-Doppler-ultrasonic-scanning-based antitheft system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105335424A (en) * | 2014-08-06 | 2016-02-17 | 李江波 | Rotary cabinet operation information display control method |
| WO2017028223A1 (en) * | 2015-08-18 | 2017-02-23 | 常平 | Voice-controlled express-delivery temporary storage device and method for using voice-controlled express-delivery temporary storage device |
| CN110287866A (en) * | 2019-06-24 | 2019-09-27 | Oppo广东移动通信有限公司 | Ultrasonic fingerprint recognition methods, device, storage medium and electronic equipment |
| CN114165134A (en) * | 2022-01-19 | 2022-03-11 | 中恒国通有限公司 | Intelligent confidential cabinet with face recognition function |
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| CN102999957B (en) | 2015-07-29 |
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