Background technology
Mechanical key easily cracks, duplicates and falsely uses; Used " key " (finger) of fingerprint lockset can not authorize other people to use.At present in known unlatching-executive system based on identification authentication mode; 1), token and password system (being usually used in ATM withdrawal machine, access control system, proof box, vehicle wireless anti-theft door lock or the like): owing to rely on safeguard measures such as smart card, identification number, password, have token lost, copied, password easily cracks equivalent risk.In order to improve security, must increase the complexity of password and password, cause the difficulty in the use.Especially in operation during multiple devices, safety with easy-to-use between caused and conflicted, in the specific implementation, have to yield to ease for use, the security of reduction system.2), adopt the gate control system of biological identification technology: because of using biological characteristic as basis of characterization, need not remember ID (identity number) and password, also needn't carry smart card and so on, be recognition methods the most convenient so far and safety, is widely used in fingerprint entrance guard system.But its authentication equipment and actuating unit are connected as a single entity, in the common equipment of individual privacy (biological information) must being pre-recorded; And do not possess common key with the flexible Application function that possesses (as lend etc.).Not only the privacy to user fingerprints causes infringement, and finger print identifying part damages easily as shared device, and maintenance cost is big.
Summary of the invention
Can not discern possessor's true and false in order to overcome the existing machinery key, and the fingerprint lockset limitation of only limitting the owner to open in person, the object of the present invention is to provide a kind of open system that can discern fingerprint that improves security performance.
The technical solution adopted for the present invention to solve the technical problems.This open system that can discern fingerprint comprises key main body and lockset, and key body is provided with the circuit part that is connected to form by communication interface circuit, fingerprint sensor circuit, power circuit, memory circuitry, fingerprint identification module circuit; Wherein the fingerprint identification module circuit joins with the part interface of communication interface circuit, fingerprint sensor circuit, power circuit, memory circuitry respectively; The power output end of power circuit and the power end of other circuit join so that working power to be provided; Lockset is provided with the actuating unit that is made of processing unit module, performance element module and communication interface circuit; Be connected by contactless communication interface circuit between key main body and the lockset and carry out the signal data transmission; When the non-contact data communication, authentication protocol safe in utilization is to guarantee the coupling safety between key and the lockset.
Be provided with the management devices that can make key bring into play various functions, its circuit part mainly comprises single chip circuit, keyboard circuit, liquid crystal display circuit and IrDA interface circuit, and wherein single chip circuit joins with the part interface of keyboard circuit, liquid crystal display circuit and IrDA interface circuit respectively; Be connected by the IrDA interface circuit between key main body and the management devices and carry out the signal data transmission; Described single chip circuit mainly is made of singlechip chip U1 and peripheral circuit, and the IrDA interface circuit mainly is made of interface chip U6 and peripheral circuit, and liquid crystal display circuit mainly is made of LCD1 chip and peripheral circuit; Main wiring is: 7,5 and 43 pins of singlechip chip U1 join with 3,2 and 9 pins of interface chip U6 respectively, 40,41,42,43 and 44 pins of singlechip chip U1 join with 10,11,12,13 and 14 pins of LCD1 chip respectively, and 1 pin of singlechip chip U1 joins by 1 pin of R1 and triode PK1 and LCD1 chip.
The technical solution adopted for the present invention to solve the technical problems can also be further perfect.Described communication interface circuit is the IrDA interface circuit; Fingerprint sensor circuit mainly is made of sensor chip U1 and peripheral circuit, and the IrDA interface circuit mainly is made of interface chip U2 and peripheral circuit.Described communication interface circuit also can be and is the radio frequency interface circuit.
The effect that the present invention is useful is: 1), realize high security in conjunction with powerful finger print identifying function.2), the intelligent management of fingerprint key and authorization function; 3), fingerprint key not reproducible (uniqueness); 4), corresponding many locks of many keys, promptly one can open legal key manyly different locks, and a lock can have many different legal key.5), realize the personalization of fingerprint key, the private ownership of protection user fingerprints, user fingerprints only is stored in the privately owned key, does not reveal away from key in all authentications and transmission course.6), adopt safety authentication protocol between key and the lockset, guarantee the safety that is coupled.
Embodiment:
Below in conjunction with embodiment the present invention is further described.As illustrated in figs. 1 and 2, this open system that can discern fingerprint, comprise key main body 1 and lockset 2, key body 1 is provided with the circuit part that is connected to form by IrDA interface circuit, fingerprint sensor circuit, power circuit, memory circuitry, fingerprint identification module circuit; Wherein the fingerprint identification module circuit joins with the part interface of IrDA interface circuit, fingerprint sensor circuit, power circuit, memory circuitry respectively; The power output end of power circuit and the power end of other circuit join so that working power to be provided; Lockset 2 is provided with the actuating unit that is made of processing unit module, performance element module and IrDA interface circuit; Be connected by the IrDA interface circuit between key main body 1 and the lockset 2 and carry out the signal data transmission.Be provided with the management devices 3 that can make key bring into play various functions, its circuit part mainly comprises: single chip circuit, keyboard circuit, liquid crystal display circuit and IrDA interface circuit.Wherein the relevant interface of the IrDA interface circuit that constitutes with S1~4 keyboard circuits, LCD1 liquid crystal display circuit and U6 respectively of U1 single chip circuit joins; Be connected by the IrDA interface circuit between key main body 1 and the management devices 3 and carry out the signal data transmission.
As shown in Figure 7, main concrete wiring is: 3,2 and 9 pin of interface chip U2 join with HD0, HD1 and the RST pin of fingerprint identification module circuit respectively; The HD3 pin of fingerprint identification module circuit is connected with 43 pin of the sensor chip U1 of fingerprint sensor circuit with R8, R9 by D1, D2.As shown in Figure 8, main concrete wiring is: 7,5 and 43 pins of singlechip chip U1 respectively with interface chip U6 3,2 and manage 9 pin and join, 40,41,42,43 and 44 pins of singlechip chip U1 join with 10,11,12,13 and 14 pins of LCD1 chip respectively, and 1 pin of singlechip chip U1 joins by 1 pin of R1 and triode PK1 and LCD1 chip.
Principle of work: can not discern possessor's true and false in order to overcome the existing machinery key, and the fingerprint lockset limitation of only limitting the owner to open in person, the present invention has installed fingerprint identification module on " key ", and whether the fingerprint of opening the people with identification is legal; And increase and authorize and the coerce-proof function; The fingerprint authentication function is separated from known base system, fingerprint authentication is embedded in the fingerprint key goes simultaneously.Potential safety hazard when being coupled with actuating unit in order to stop opening device (fingerprint key), and adopt the random number safety authentication protocol, carry out both sides' communication.
The course of work: as shown in Figure 3, in advance with legal user's fingerprint storage in key.When opening with it, the user presses finger on the living body finger print sensor, its fingerprint is collected and recorded by fingerprint identification module wherein at once, through calculation process, the fingerprint that is stored in advance in the key is compared, judge this living body finger print whether with key in the fingerprint of typing in advance, be the fingerprint of same finger.Reach the purpose of confirming legal user with this.Then,, carry out coded communication, impel it to finish corresponding breakdown action with actuating station by the infrared interface of fingerprint key.
As described in Fig. 4, Fig. 5 and Fig. 6, realize the functions such as management, mandate and coerce-proof of fingerprint key by management devices 3.
One, the management of fingerprint key
1) fingerprint login
Comprise the login of standby fingerprint and coerce-proof fingerprint.
2) fingerprint deletion
The user can delete the fingerprint of oneself at any time, comprises using fingerprint and coerce-proof fingerprint.After the user is with the deletion of coerce-proof fingerprint, will close at this user's coerce-proof function, login new coerce-proof fingerprint from new unlatching up to this user.
Two, user management:
1) change of user's access times
When the user can legal use key, can carry out the change of access times to own next stage user at any time.But the number of times of appointment is less than the access times of authorizing user oneself.
2) user right change
When the user can legal use key, can carry out the change of rights of using to own next stage user at any time.Specified power is less than or is equal to the authority of authorizing user oneself.
3) user's deletion
When the user can legal use key, can delete own next stage user at any time.In deletion next stage user, system will delete all later users of this user in the link automatically.
Three, authorize
User in the key can license to key new user.Whole mandate comprises two parts: authorize new user will register substantially at key earlier, login one piece of fingerprint, then the new registration user is carried out authorizing of authority.Authorized user is divided into two kinds from the angle of gained authority:
1) imitates authorized user entirely
The full authorized user of imitating can be opened all locks that this key was registered, and higher authority is arranged.
2) part authorized user
Can only open wherein one or several locks, and other the lock that key was registered is invalid.
Key can authority mandate in multistage minute, and the user of back one-level can only be less than or be equal to previous stage user's authority.In some special occasion, the user is when authorizing the next stage user, can also specify the legal access times of new user to this key, the number of times of appointment is less than the access times of authorizing user oneself, after mandate is finished, conferrer's access times will deduct new user's access times.Access times are zero user can not re-use this key except deletion action other functions.