CN107749096A - Safe electronic lock and its control method based on ultrahigh frequency RFID - Google Patents
Safe electronic lock and its control method based on ultrahigh frequency RFID Download PDFInfo
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- CN107749096A CN107749096A CN201710306019.2A CN201710306019A CN107749096A CN 107749096 A CN107749096 A CN 107749096A CN 201710306019 A CN201710306019 A CN 201710306019A CN 107749096 A CN107749096 A CN 107749096A
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- electronic lock
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- 238000000034 method Methods 0.000 title claims abstract description 79
- 238000004891 communication Methods 0.000 claims abstract description 17
- 230000015654 memory Effects 0.000 claims description 45
- 238000012795 verification Methods 0.000 claims description 23
- 239000000284 extract Substances 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 2
- 230000006870 function Effects 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 9
- 238000004146 energy storage Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000009351 contact transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003362 replicative effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00182—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
- G07C2009/00769—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means
- G07C2009/00793—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means by Hertzian waves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Theoretical Computer Science (AREA)
- Lock And Its Accessories (AREA)
Abstract
The invention provides a kind of safe electronic lock and its control method based on ultrahigh frequency RFID, the safe electronic lock includes RFID label tag, DC micromotor and antenna.Reader by safe electronic lock between communication, realize unlatching/closing to safe electronic lock, or the state that query safe electronic lock is current.Using the safe electronic lock and its control method of the present invention, the security of communication is improved, and the real-time monitoring that article is corresponded to safety lock can be realized.
Description
Technical field
The present invention relates to electronic lock technical field, more particularly to a kind of safe electronic lock and its control based on ultrahigh frequency RFID
Method processed.
Background technology
Tradition machinery lockset always there is safety coefficient it is not high the problem of, using some light instruments just can open, and
And open when scene nobody cannot be found in time.Also occur in the prior art by the side such as short message, phone, network
The electric lockset that formula is opened, this kind of electric lockset need not make to turn the key in the lock, be opened the door by wireless communication mode, this unlocking
Mode provides the easy to use of user, avoids mechanical lock and unexpected occur such as is prized.But this lockset is chronically at communication shape
State standby power consumption amount is big, can not will be locked and opened by other approach if having a power failure, and can not now ensure the security of lock.This
Outside, the wireless telecommunications of this lockset are easily trapped, replicate or cracked, and the situation for causing illegally to open the door occurs, and reduces lockset
Security.
In recent years, a kind of technically best solution of automatic identification is stored data in one piece of silicon.
In daily life, the IC-card (including phone IC-card, bank card etc.) with contact row is the most common of electric data carrier
Structure.And in many cases, such as IC-card, the connection of its mechanical contact is insecure, and comparatively, data carry
Data between body and read write line belonging to one carry out non-contact transmission will be more reliable, more flexible.According to the energy used
Amount and data transmission method, this non-contacting identifying system is generally referred to as radio frequency identification by us（RFID, Radio
Frequency Identificantion）System, RFID system are that one kind is read using radio frequency by exterior material
Data are write, radio-frequency technique is combined with IC-card technology and can be used for remote, moving-target, wireless identification technology, there is nothing
Contact, operating distance is big, precision is high, information management is quick, information storage is big, all weather operations and preferably applies ring
Border adaptability, it is identified available for single specific object, it can also be used to which multiple objects are identified.Basic RFID
System generally includes label (i.e. transponder) and read write line, and each label has unique identity coding (i.e. ID number), mark
Label, which are attached on object, identifies destination object；Read write line is used for the information for reading or writing label, may be designed to hand-held or fixation
Formula.It is in communication with each other between label and read write line by antenna.
RFID system is had been widely used in every field, in daily life, increasing people or article
Management all applies RFID system, is such as applied to intelligent door lock.At present, apply RFID system intelligent door lock generally include by
The key of label composition, read write line, lock body control circuit and lock body and the mechanical linkage which controls being arranged in tapered end, lock body control
Circuit is connected with read write line and lock body and mechanical linkage which controls respectively；This kind of door lock overwhelming majority is directly to be compiled by identity
Code realizes being in communication with each other between label and read write line, so as to reach being turned on and off for door lock, has brought very big
It is convenient, but because the application design of RFID system is wide-open, while many potential safety hazards are also brought to people, it is this
The security privacy that intelligent door lock faces, which threatens, mainly to be had：Using Eavesdropping, pass through normal work between analyzing tags and read write line
The various signals handled during work, to obtain the communication number between label and read write line or between other RFID communication devices
According to；Artificial signal interference so that legal read write line is unable to the data of normal reading label transmission；Understand the data in label
Information, to reach the technology for replicating label；Using read write line or the communication interface of label, seek security protocol, AES with
And the weakness of their realizations, and then delete label substance or distort rewriting label substance.
As can be seen here, as the development of electronic technology, electronic lock have been widely used for the neck such as gate inhibition due to its convenience
Domain.But how to ensure between RFID label tag and read write line, the actuator that RFID label tag switchs with control lockset（It is usually miniature
Direct current generator）Between security, be a urgent problem.Meanwhile in the prior art, the execution of control lockset switch
Device（Usually DC micromotor）It need to be powered by contact by lockset external power source, deposited on security appliance and ease of use
In defect.Also, in the prior art, also without providing the concrete scheme that how to monitor by electronic lock article in real time.
The content of the invention
For the above-mentioned problems in the prior art, it is an object of the invention to provide a kind of based on ultrahigh frequency RFID
Safe electronic locks and its control method.
The present invention provides a kind of safe electronic lock based on ultrahigh frequency RFID, including RFID label tag, DC micromotor, day
Line；The antenna, for realizing the communication between safe electronic lock and reader；Characterized in that, the RFID label tag enters one
Step includes：DC restoration circuit, for the RF energy sent by antenna reception reader, therefrom extract power supply and store
Into accumulator；Accumulator, for storing the power supply extracted by DC restoration circuit, and it is modulates information/demodulation electricity
Road, EEPROM internal memories, encryption/decryption circuit and DC micromotor provide power supply；Modulates information/demodulator circuit, for solving
Adjust the signal from reader received by antenna；If demodulation result is broadcast singal, extracted from broadcast singal
Go out the ID of reader, and the method for encryption/decryption that the follow-up reader of agreement is communicated with safe electronic lock, and will extract
ID matched with the information stored in EEPROM internal memories, to determine whether reader has operating right；If it is determined that read
Utensil has operating right, then feeds back Authority Verification pass signal to reader, to cause reader is sent to safe electronic lock to add
Close proprietary control instruction, wherein encryption method are the encryption methods arranged before in broadcast singal；If demodulation result
For proprietary control instruction, then send it to encryption/decryption circuit and be decrypted；EEPROM internal memories, have permission behaviour for storing
Make the ID of the reader of safe electronic lock, and safe electronic locks current state；Encryption/decryption circuit, for using agreement
Decryption method proprietary control instruction is decrypted, and corresponding operation is performed according to the proprietary control instruction after decryption.Its
In, the DC micromotor, for according to the instruction received from encryption/decryption circuit, being turned on or off safe electronic
Lock.
Further, the antenna is an antenna sets, including a plurality of reception antenna for being respectively facing multiple directions.
Further, the proprietary control instruction according to after decryption performs corresponding operation and specifically included：If open
Safe electronic lock instruction is opened, then controls DC micromotor to open safe electronic lock, and updates safe electronic in EPROM internal memories and locks
Current state；If closed safe electronic lock instructs, then DC micromotor closed safe electronic lock is controlled, and update
Safe electronic locks current state in EPROM internal memories；If the instruction of query safe electronics lock status, then inquire about in EEPROM
Deposit middle safe electronic and lock current state, and ID of the Query Result together with RFID label tag is fed back into reader.
Further, the safe electronic lock also includes：GPS circuitry, for periodically obtaining the position letter of safe electronic lock
Breath, and store it in EEPROM internal memories；When safe electronic interlocking receives the finger of the query safe electronics lock status of reader
After order, the positional information that safe electronic is locked is fed back into reader in the lump.
Present invention also offers a kind of method being controlled to safe electronic lock, comprise the following steps：S101, read
Read device and periodically send broadcast singal, wherein the ID of reader is carried in the broadcast singal, and the follow-up of agreement is read
Read the method for encryption/decryption that device is communicated with safe electronic lock；S102, after receiving broadcast singal, the peace in state of intercepting
All-electronin is locked into wake-up states, and is extracted power supply in the RF energy sent by DC restoration circuit from reader and stored
Into accumulator；S103, after modulates information/demodulator circuit extracts the ID of reader, and agreement from broadcast singal
Method for encryption/decryption that continuous reader is communicated with safe electronic lock, and by the ID extracted with being stored in EEPROM internal memories
Information is matched；If the match is successful, illustrate that reader has the authority of control safe electronic lock, then read the follow-up of agreement
Reading device is corresponding with the method for encryption/decryption that safe electronic lock is communicated to be stored in EEPROM internal memories, while is fed back to reader
Authority Verification pass signal；If it fails to match, illustrate the authority that reader does not control safe electronic to lock, then it is anti-to reader
Present Authority Verification failure signal；S104, reader judges that the signal that receives is Authority Verification failure signal, or Authority Verification
Pass signal；If receiving Authority Verification failure signal, terminate this flow；If receive Authority Verification successfully to believe
Number, then the proprietary control instruction for sending encryption is locked to safe electronic, wherein encryption method is to arrange before in broadcast singal
Encryption method；S105, will after the proprietary control instruction that the modulates information/demodulator circuit demodulation in safe electronic lock receives
It is sent to encryption/decryption circuit and is decrypted；S106, encryption/decryption circuit is using the decryption method of agreement to proprietary control
Instruction is decrypted, and the operation according to corresponding to performing the proprietary control instruction after decryption；Refer to if opening safe electronic lock
Order, then control DC micromotor to open safe electronic lock, and update safe electronic in EPROM internal memories and lock current state；Such as
Fruit is the instruction of closed safe electronic lock, then controls DC micromotor closed safe electronic lock, and updates safety in EPROM internal memories
The current state of electronic lock；If the instruction of query safe electronics lock status, then inquire about safe electronic in EEPROM internal memories and lock
Current state, and ID of the Query Result together with RFID label tag is fed back into reader.
Further, methods described also includes：The positional information of safe electronic lock is periodically obtained by GPS circuitry, and will
It is stored in EEPROM internal memories；, will after safe electronic interlocking receives the instruction of query safe electronics lock status of reader
The positional information of safe electronic lock feeds back to reader in the lump.
Further, methods described also includes：Reader periodically inquires about all-electronin and locks current state and deposited
Storage；The ID for the RFID label tag that the ID for the RFID label tag that reader receives current period received with a upper cycle is compared
It is right；If it was found that the ID of the RFID label tag exists in a upper cycle memory, and being not present in current period, illustrate and the RFID label tag
Corresponding article is removed；If it was found that the ID of the RFID label tag was not present within a upper cycle, and in current period internal memory
When, it is an article being newly stored in illustrate article corresponding with the ID of the RFID label tag；If the ID of RFID label tag is in current week
In phase and previous cycle all in the presence of, illustrate that article corresponding with the ID of the RFID label tag is stored in article-storage device always, do not have
There is generating state change.
Further, methods described also includes：When finding that article is removed by comparing, lookup and current period time
The on off state of nearest electronic lock, if the state of safe electronic lock is opens, it is normally to be taken away to illustrate article；If
The state of safe electronic lock illustrates that article is illegally taken away, then sent a warning message to close；Wherein, the warning information bag
Include the positional information of safe electronic lock.
Further, methods described also includes：In the broadcast singal that reader is sent every time, the method for encryption/decryption of carrying be from
Existing method for encryption/decryption randomly selects one kind；Wherein, existing method for encryption/decryption is following any one or its combination：
MD5；RSA；DES.
Relative to electronic lock of the prior art, lock, achieve following beneficial to effect by using the safe electronic of the present invention
Fruit：
（1）Prior art is independently to set encryption/decryption circuit with RFID label tag, and the present invention is by by encryption/solution
Cipher telegram road has been encapsulated into RFID label tag, and safety certification and encryption/decryption functionality are realized inside tag circuit, improves peace
Quan Xing.
（2）In the prior art, all it is to be communicated by existing communication protocol between reader and electronic lock, easy quilt
Crack.The present invention substantially increases the security to be communicated between reader and electronic lock by using proprietary control instruction.Enter one
Step ground, the present invention are carried out by randomly selecting a kind of method for encryption/decryption from existing method for encryption/decryption to proprietary control instruction
Encryption, the security to be communicated between reader and electronic lock is further increased from there through randomness.
（3）In the prior art, encryption/decryption circuit and DC micromotor are powered using external power source, and
In the present invention, RF energy storage is extracted from radiofrequency signal by DC restoration circuit into accumulator, by energy storage
Circuit is unified for encryption/decryption circuit and DC micromotor power supply, so that no longer needing external power source to power, improves
Security appliance and ease of use.
（4）In the prior art, safe electronic lock generally only sets an antenna, and in the present invention, included by setting
The a plurality of antenna for being respectively facing multiple directions, so that anyway putting safe electronic lock, reader can be received
The signal sent, overcome the operation blind area of prior art.
（5）In the present invention, by the state for inquiring about, storing, comparing safe electronic lock, it is right to safe electronic lock institute to realize
The monitoring of article condition is answered, solves the defects of can not carrying out article monitoring in real time by electronic lock in the prior art.
Brief description of the drawings
With reference to subsequent accompanying drawing, above-mentioned and other mesh of the invention can be obviously drawn from following detailed description
, feature and advantage.In the accompanying drawings：
Fig. 1 show the present invention based on hyperfrequency（UHF）The function composition frame chart of RFID safe electronic lock.
Fig. 2 shows the method flow diagram being controlled to the lock of the safe electronic based on ultrahigh frequency RFID 2 of invention.
Embodiment
Technical scheme is described in further detail below in conjunction with the accompanying drawings, the example of the embodiment exists
Shown in accompanying drawing, the embodiment below with reference to accompanying drawing description is exemplary, is only used for explaining the present invention, and can not be solved
It is interpreted as limitation of the present invention.
As shown in figure 1, the present invention based on hyperfrequency（UHF）RFID safe electronic lock 2 includes RFID label tag 3, miniature
Direct current generator 4 and antenna 5.Wherein, RFID label tag 3 further comprise DC restoration circuit 31, accumulator 32, modulates information/
Demodulator circuit 33, EEPROM internal memories 34 and encryption/decryption circuit 35.Pass through radio frequency between reader 1 and safe electronic lock 2
Communicated, and unlatching/closing to safe electronic lock 2, or the state that query safe electronic lock 2 is current are realized with this.
Below with reference to Fig. 1, each building block in safe electronic lock 2 is described in detail.
Antenna 5, for realizing the communication between safe electronic lock 2 and reader 1.Specifically, in the prior art, safety
There is the problem of putting position uncertainty in electronic lock 2, so that reader 1 can when operating on it in use
Can exist and receive blind area, directionality difference, it is necessary to exchange the problem of multiple directions are only possible to operate on it for, to operating personnel with
Carry out unpredictable difficulty, therefore, in the present invention, antenna 5 is an antenna sets, it includes a plurality of being respectively facing multiple directions
Reception antenna so that anyway put safe electronic lock 2, the signal that reader 1 is sent can be received, overcome
The operation blind area of prior art.Specific antenna amount, it can be configured according to being actually needed.
DC restoration circuit 31, for the RF energy sent by the reception reader 1 of antenna 5, therefrom extract power supply
And store into accumulator 32.
Accumulator 32, for storing the power supply extracted by DC restoration circuit 31, and it is modulates information/demodulator circuit
33rd, EEPROM internal memories 34, encryption/decryption circuit 35 and DC micromotor 4 provide power supply.
Modulates information/demodulator circuit 33, the signal from reader 1 received for demodulation by antenna 5, and according to
Demodulation result is determined to operate EEPROM internal memories 34, or demodulation result is sent into encryption/decryption circuit 35.Specifically
For：
If demodulation result is broadcast singal, the ID of reader 1, and the follow-up reading of agreement are extracted from broadcast singal
The method for encryption/decryption that device 1 is communicated with safe electronic lock 2, and the letter that will be stored in the ID extracted and EEPROM internal memories 34
Breath is matched.If the match is successful, illustrate that reader 1 has the authority of control safe electronic lock 2, then read the follow-up of agreement
Read device 1 and safe electronic and lock that 2 method for encryption/decryption to be communicated are corresponding to be stored in EEPROM internal memories 34, while to reader 1
Feed back an Authority Verification pass signal；If it fails to match, illustrate authority of the reader 1 without control safe electronic lock 2, then
An Authority Verification failure signal is fed back to reader 1.Explanation is needed exist for, in the present invention, reader 1 is sent every time
Broadcast singal in, the method for encryption/decryption of carrying is to randomly select one kind from existing method for encryption/decryption.Existing enciphering/deciphering
Method can be one kind or its combination in MD5, RSA, DES algorithm, and these are only to enumerate, and the present invention is not limited to the above
Algorithm.For selected method for encryption/decryption, set a field to be identified in a broadcast signal, represented for example with 00
MD5,01 represents RSA, and 10 represent DES, and by that analogy, specific digit depends on the quantity of algorithm.Safe electronic interlocking receives
After broadcast singal, it is possible to according to the rule arranged in advance, learn the selected method for encryption/decryption of reader 1.
If demodulation result is proprietary control instruction, sends it to encryption/decryption circuit 35 and be decrypted.
EEPROM internal memories 34, the ID of the reader 1 for being stored with limiting operation safe electronic lock 2.Further, also use
2 current states are locked in storage safe electronic, are achieved in the monitoring to article condition corresponding to safe electronic lock 2.It is specific and
Speech：
Reader 1 can periodically inquire about the current state of all-electronin lock 2 and be stored.Reader 1 connects current period
The ID for the RFID label tag 3 that the ID of the RFID label tag 3 received received with a upper cycle is compared, if finding the RFID label tag 3
ID exist in a upper cycle memory, and be not present in current period, illustrate that the article corresponding with the RFID label tag 3 is removed
；If it was found that the ID of the RFID label tag 3 was not present within a upper cycle, and in current period in the presence of, illustrate and the RFID
Article corresponding to the ID of label 3 is an article being newly stored in；If the ID of RFID label tag 3 current period and in the previous cycle all
In the presence of, illustrate that article corresponding with the ID of the RFID label tag 3 is stored in article-storage device always, change without generating state.
Further, when finding that article is removed by comparing, the on off state with the nearest electronic lock of current period time is searched,
If for the state of safe electronic lock 2 to open, it is normally to be taken away to illustrate article；If the state of safe electronic lock 2 is pass
Close, illustrate that article is illegally taken away, then send a warning message；Wherein, the warning information includes the position letter of safe electronic lock
Breath.
Encryption/decryption circuit 35, for proprietary control instruction to be decrypted using the decryption method of agreement, and according to solution
Proprietary control instruction after close operates corresponding to performing.Specifically, if opening safe electronic lock instruction, then control miniature
Direct current generator 4 opens safe electronic lock 2, and updates safe electronic in EPROM internal memories 34 and lock 2 current states；If close
Safe electronic lock instruction, then control the closed safe electronic lock 2 of DC micromotor 4, and update safe electronic in EPROM internal memories 34
Lock 2 current states；If the instruction of query safe electronics lock status, then safe electronic lock 2 in EEPROM internal memories 34 is inquired about
Current state, and Query Result is fed back into reader 1 together with the ID of RFID label tag 3.
DC micromotor 4, for according to the instruction received from encryption/decryption circuit 35, being turned on or off safety
Electronic lock 2.
Further, safe electronic of the invention lock also includes GPS circuitry（Fig. 1 is not shown）, for periodically obtaining safety
The positional information of electronic lock, and store it in EEPROM internal memories；When safe electronic interlocking receives the query safe of reader
After the instruction of electronics lock status, the positional information that safe electronic is locked is fed back into reader in the lump.
All it is from existing here, it should be strongly noted that in the broadcast singal that reader 1 of the present invention is sent every time
Method for encryption/decryption in randomly select a kind of method for encryption/decryption, and using selected after Authority Verification pass signal is received
Proprietary control instruction is encrypted method for encryption/decryption, and the security of communication is substantially increased from there through randomness.It is existing
Method for encryption/decryption can be one kind in MD5, RSA, DES algorithm or its combination, these are only to enumerate, and the present invention is simultaneously
It is not limited to algorithm above.For selected method for encryption/decryption, a field is set to be identified in a broadcast signal, such as adopt
MD5 is represented with 00,01 represents RSA, and 10 represent DES, and by that analogy, specific digit depends on the quantity of algorithm.Safe electronic
After interlocking receives broadcast singal, it is possible to according to the rule arranged in advance, learn the selected method for encryption/decryption of reader 1.
The present invention is described in detail above is based on hyperfrequency（UHF）RFID safe electronic lock 2.Relative in the prior art
Electronic lock, by using the present invention safe electronic lock, achieve following beneficial effect：
（1）Prior art is independently to set encryption/decryption circuit with RFID label tag, and the present invention is by by encryption/solution
Cipher telegram road has been encapsulated into RFID label tag, and safety certification and encryption/decryption functionality are realized inside tag circuit, improves peace
Quan Xing.
（2）In the prior art, all it is to be communicated by existing communication protocol between reader and electronic lock, easy quilt
Crack.The present invention substantially increases the security to be communicated between reader and electronic lock by using proprietary control instruction.Enter one
Step ground, the present invention are carried out by randomly selecting a kind of method for encryption/decryption from existing method for encryption/decryption to proprietary control instruction
Encryption, the security to be communicated between reader and electronic lock is further increased from there through randomness.
（3）In the prior art, encryption/decryption circuit and DC micromotor are powered using external power source, and
In the present invention, RF energy storage is extracted from radiofrequency signal by DC restoration circuit into accumulator, by energy storage
Circuit is unified for encryption/decryption circuit and DC micromotor power supply, so that no longer needing external power source to power, improves
Security appliance and ease of use.
（4）In the prior art, safe electronic lock generally only sets an antenna, and in the present invention, included by setting
The a plurality of antenna for being respectively facing multiple directions, so that anyway putting safe electronic lock, reader can be received
The signal sent, overcome the operation blind area of prior art.
（5）In the present invention, by the state for inquiring about, storing, comparing safe electronic lock, it is right to safe electronic lock institute to realize
The monitoring of article condition is answered, solves the defects of can not carrying out article monitoring in real time by electronic lock in the prior art.
Next, with reference to figure 2, to the present invention based on hyperfrequency（UHF）The side that RFID safe electronic lock is controlled
Method flow describes in detail.Specifically, comprise the following steps：
S101：Reader 1 periodically sends broadcast singal, wherein the ID of reader 1 is carried in the broadcast singal, and
The method for encryption/decryption that the follow-up reader 1 of agreement is communicated with safe electronic lock 2.In this step, reader 1 is sent out every time
In the broadcast singal sent, the method for encryption/decryption of carrying is to randomly select one kind from existing method for encryption/decryption.Existing plus/solution
Decryption method can be one kind in MD5, RSA, DES algorithm or its combination, and these are only to enumerate, the present invention be not limited to
Upper algorithm.For selected method for encryption/decryption, set a field to be identified in a broadcast signal, represented for example with 00
MD5,01 represents RSA, and 10 represent DES, and by that analogy, specific digit depends on the quantity of algorithm.Safe electronic interlocking receives
After broadcast singal, it is possible to according to the rule arranged in advance, learn the selected method for encryption/decryption of reader 1.
S102：After receiving broadcast singal, the safe electronic lock 2 in state of intercepting enters wake-up states, and by direct current
Power supply is extracted in the RF energy that restoring circuit 31 is sent from reader 1 and is stored into accumulator 32.
S103：Modulates information/demodulator circuit 33 extracts the ID of reader 1 from broadcast singal, and arranges follow-up
The method for encryption/decryption that reader 1 is communicated with safe electronic lock 2, and will be stored in the ID extracted and EEPROM internal memories 34
Information matched.If the match is successful, illustrate that reader 1 has the authority of control safe electronic lock 2, then by after agreement
Continuous reader 1 locks that 2 method for encryption/decryption to be communicated are corresponding to be stored in EEPROM internal memories 34 with safe electronic, while to readding
Read device 1 and feed back an Authority Verification pass signal；If it fails to match, illustrate power of the reader 1 without control safe electronic lock 2
Limit, then feed back an Authority Verification failure signal to reader 1.
S104：Reader 1 judges that the signal that receives is Authority Verification failure signal, or Authority Verification pass signal.
If receiving Authority Verification failure signal, terminate this flow；If receiving Authority Verification pass signal, to safety
Electronic lock 2 sends the proprietary control instruction of encryption, and wherein encryption method is the encryption method arranged before in broadcast singal.
The proprietary control instruction, for opening/closed safe electronic lock 2, or the state for query safe electronic lock 2.
S105：, will after modulates information/demodulator circuit 33 in safe electronic lock 2 demodulates the proprietary control instruction received
It is sent to encryption/decryption circuit 35 and is decrypted.
S106：Proprietary control instruction is decrypted using the decryption method of agreement for encryption/decryption circuit 35, and according to solution
Proprietary control instruction after close operates corresponding to performing.If opening safe electronic lock instruction, then DC micromotor 4 is controlled
Safe electronic lock 2 is opened, and updates safe electronic in EPROM internal memories 34 and locks 2 current states；If closed safe electronic lock
Instruction, then the closed safe electronic lock 2 of DC micromotor 4 is controlled, and it is current to update the lock of safe electronic in EPROM internal memories 34 2
State；If the instruction of query safe electronics lock status, then inquire about safe electronic in EEPROM internal memories 34 and lock 2 current shapes
State, and Query Result is fed back into reader 1 together with the ID of RFID label tag 3.
S107：Terminate this flow.
Further, reader 1 can also store safe electronic 2 current states of lock, be achieved in safe electronic lock 2
The monitoring of corresponding article condition.Specifically：
Reader 1 can periodically inquire about the current state of all-electronin lock 2 and be stored.Reader 1 connects current period
The ID for the RFID label tag 3 that the ID of the RFID label tag 3 received received with a upper cycle is compared, if finding the RFID label tag 3
ID exist in a upper cycle memory, and be not present in current period, illustrate that the article corresponding with the RFID label tag 3 is removed
；If it was found that the ID of the RFID label tag 3 was not present within a upper cycle, and in current period in the presence of, illustrate and the RFID
Article corresponding to the ID of label 3 is an article being newly stored in；If the ID of RFID label tag 3 current period and in the previous cycle all
In the presence of, illustrate that article corresponding with the ID of the RFID label tag 3 is stored in article-storage device always, change without generating state.
Further, when finding that article is removed by comparing, the on off state with the nearest electronic lock of current period time is searched,
If for the state of safe electronic lock 2 to open, it is normally to be taken away to illustrate article；If the state of safe electronic lock 2 is pass
Close, illustrate that article is illegally taken away, then send a warning message.Wherein, the warning information includes the position letter of safe electronic lock
Breath.
Above to the present invention based on hyperfrequency（UHF）The method flow that RFID safe electronic lock is controlled has been made in detail
It is thin to introduce.Relative to prior art, by using the method for the present invention, following beneficial effect is achieved：
（1）Prior art is independently to set encryption/decryption circuit with RFID label tag, and the present invention is by by encryption/solution
Cipher telegram road has been encapsulated into RFID label tag, and safety certification and encryption/decryption functionality are realized inside tag circuit, improves peace
Quan Xing.
（2）In the prior art, all it is to be communicated by existing communication protocol between reader and electronic lock, easy quilt
Crack.The present invention substantially increases the security to be communicated between reader and electronic lock by using proprietary control instruction.Enter one
Step ground, the present invention are carried out by randomly selecting a kind of method for encryption/decryption from existing method for encryption/decryption to proprietary control instruction
Encryption, the security to be communicated between reader and electronic lock is further increased from there through randomness.
（3）In the prior art, encryption/decryption circuit and DC micromotor are powered using external power source, and
In the present invention, RF energy storage is extracted from radiofrequency signal by DC restoration circuit into accumulator, by energy storage
Circuit is unified for encryption/decryption circuit and DC micromotor power supply, so that no longer needing external power source to power, improves
Security appliance and ease of use.
（4）In the prior art, safe electronic lock generally only sets an antenna, and in the present invention, included by setting
The a plurality of antenna for being respectively facing multiple directions, so that anyway putting safe electronic lock, reader can be received
The signal sent, overcome the operation blind area of prior art.
（5）In the present invention, by the state for inquiring about, storing, comparing safe electronic lock, it is right to safe electronic lock institute to realize
The monitoring of article condition is answered, solves the defects of can not carrying out article monitoring in real time by electronic lock in the prior art.
In addition, other advantages and modification can be obviously drawn for the person of ordinary skill of the art.Therefore, have
More extensive areas illustrate and exemplary embodiment the invention is not limited in herein shown and described.Cause
This, is in the case where not departing from the spirit and scope of general inventive concept as defined in appended claims and its equivalents,
Various modifications can be made to it.
Claims (9)
1. a kind of safe electronic lock based on ultrahigh frequency RFID, including RFID label tag, DC micromotor, antenna；The antenna,
For realizing the communication between safe electronic lock and reader；Characterized in that, the RFID label tag further comprises：
DC restoration circuit, for the RF energy sent by antenna reception reader, therefrom extract power supply and store and arrive
In accumulator；
Accumulator, for storing the power supply extracted by DC restoration circuit, and it is modulates information/demodulator circuit, EEPROM
Internal memory, encryption/decryption circuit and DC micromotor provide power supply；
Modulates information/demodulator circuit, for demodulating the signal from reader received by antenna；If demodulation result is
Broadcast singal, then the ID of reader is extracted from broadcast singal, and the follow-up reader of agreement is carried out with safe electronic lock
The method for encryption/decryption of communication, and the ID extracted is matched with the information stored in EEPROM internal memories, to determine reader
Whether operating right is had；If it is determined that reader has operating right, then Authority Verification pass signal is fed back to reader, so that
Obtain reader and the proprietary control instruction for sending encryption is locked to safe electronic, wherein encryption method is to use in broadcast singal before about
Fixed encryption method；If demodulation result is proprietary control instruction, sends it to encryption/decryption circuit and be decrypted；
EEPROM internal memories, the ID of the reader for being stored with limiting operation safe electronic lock, and safe electronic are locked current
State；
Encryption/decryption circuit, for using agreement decryption method proprietary control instruction is decrypted, and according to decryption after
Proprietary control instruction performs corresponding operation；
Wherein, the DC micromotor, for according to the instruction received from encryption/decryption circuit, being turned on or off pacifying
All-electronin is locked.
2. safe electronic according to claim 1 lock, wherein, the antenna is an antenna sets, including a plurality of is respectively facing
The reception antenna of multiple directions.
3. safe electronic lock according to claim 1, wherein, the proprietary control instruction according to after decryption performs corresponding
Operation specifically include：
If opening safe electronic lock instruction, then DC micromotor is controlled to open safe electronic lock, and update EPROM internal memories
Middle safe electronic locks current state；
If closed safe electronic lock instructs, then DC micromotor closed safe electronic lock is controlled, and update EPROM internal memories
Middle safe electronic locks current state；
If the instruction of query safe electronics lock status, then inquire about safe electronic in EEPROM internal memories and lock current state, and
ID of the Query Result together with RFID label tag is fed back into reader.
4. safe electronic lock according to claim 3, wherein, the safe electronic lock also includes：
GPS circuitry, for periodically obtaining the positional information of safe electronic lock, and store it in EEPROM internal memories；Work as safety
After electronic lock receives the instruction of query safe electronics lock status of reader, the positional information that safe electronic is locked is fed back in the lump
To reader.
5. a kind of method being controlled to any one of claim 1-4 safe electronics lock, comprises the following steps：
S101, reader periodically send broadcast singal, wherein carrying the ID of reader, Yi Jiyue in the broadcast singal
The method for encryption/decryption that fixed follow-up reader is communicated with safe electronic lock；
S102, after receiving broadcast singal, the safe electronic in state of intercepting is locked into wake-up states, and recovers electricity by direct current
Power supply is extracted in the RF energy that road is sent from reader and is stored into accumulator；
S103, modulates information/demodulator circuit extract the ID of reader from broadcast singal, and the follow-up reader of agreement with
The method for encryption/decryption that safe electronic lock is communicated, and the information progress that will be stored in the ID extracted and EEPROM internal memories
Match somebody with somebody；If the match is successful, illustrate that reader has the authority of control safe electronic lock, then by the follow-up reader and safety of agreement
The method for encryption/decryption that electronic lock is communicated correspondingly is stored in EEPROM internal memories, at the same to reader feed back Authority Verification into
Function signal；If it fails to match, illustrate the authority that reader does not control safe electronic to lock, then feed back Authority Verification to reader
Failure signal；
S104, reader judges that the signal that receives is Authority Verification failure signal, or Authority Verification pass signal；If connect
Authority Verification failure signal is received, then terminates this flow；If receiving Authority Verification pass signal, locked to safe electronic
The proprietary control instruction of encryption is sent, wherein encryption method is the encryption method arranged before in broadcast singal；
S105, after the proprietary control instruction that the modulates information/demodulator circuit demodulation in safe electronic lock receives, send it to
Encryption/decryption circuit is decrypted；
S106, encryption/decryption circuit using agreement decryption method proprietary control instruction is decrypted, and according to decryption after
Proprietary control instruction operates corresponding to performing；If opening safe electronic lock instruction, then DC micromotor is controlled to open peace
All-electronin is locked, and updates safe electronic in EPROM internal memories and lock current state；If closed safe electronic lock instructs, then control
DC micromotor closed safe electronic lock processed, and update safe electronic in EPROM internal memories and lock current state；If inquiry
The instruction of safe electronic lock status, then inquire about safe electronic in EEPROM internal memories and lock current state, and by Query Result together with
The ID of RFID label tag feeds back to reader.
6. according to the method for claim 5, further comprise：
The positional information of safe electronic lock is periodically obtained, and is stored it in EEPROM internal memories；When safe electronic interlocking receives
After the instruction of the query safe electronics lock status of reader, the positional information that safe electronic is locked is fed back into reader in the lump.
7. according to the method for claim 6, further comprise：
Reader periodically inquires about all-electronin and locks current state and stored；
The ID for the RFID label tag that the ID for the RFID label tag that reader receives current period received with a upper cycle is compared
It is right；
If it was found that the ID of the RFID label tag exists in a upper cycle memory, and being not present in current period, illustrate to mark with the RFID
Corresponding article is signed to be removed；
If it was found that the ID of the RFID label tag was not present within a upper cycle, and in current period in the presence of, illustrate and the RFID
Article corresponding to the ID of label is an article being newly stored in；
If the ID of RFID label tag current period and in the previous cycle all in the presence of, illustrate thing corresponding with the ID of the RFID label tag
Product are stored in article-storage device always, are changed without generating state.
8. according to the method for claim 7, further comprise：
When finding that article is removed by comparing, the on off state with the nearest electronic lock of current period time is searched, if
For the state of safe electronic lock to open, then it is normally to be taken away to illustrate article；If the state of safe electronic lock is closes, explanation
Article is illegally taken away, then sends a warning message；Wherein, the warning information includes the positional information of safe electronic lock.
9. according to the method described in claim any one of 5-8, wherein：
In the broadcast singal that reader is sent every time, the method for encryption/decryption of carrying is randomly selected from existing method for encryption/decryption
It is a kind of；Wherein, existing method for encryption/decryption is following any one or its combination：MD5；RSA；DES.
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| CN201610287810 | 2016-05-04 | ||
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