CN2787785Y

CN2787785Y - Encryption fingerprint lock for automobile

Info

Publication number: CN2787785Y
Application number: CNU2005201020047U
Authority: CN
Inventors: 罗蕾蕾; 阮建华
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-04-30
Filing date: 2005-04-30
Publication date: 2006-06-14
Anticipated expiration: 2015-04-30

Abstract

The utility model relates to an encryption fingerprint lock for an automobile, which comprises a power supply circuit, a fingerprint sensing module, a main control circuit and an executive output circuit, wherein an encryption circuit is connected between the fingerprint sensing module and the main control circuit, and a corresponding decryption circuit part is arranged in the main control circuit to forms a fingerprint data encryption check control device. Fingerprint data of the utility model exist in the fingerprint sensing module which can be used as a first contrasting device, and meanwhile, exworks codes of the fingerprint data and the fingerprint sensing module also exist in the main control circuit after the random rolling encryption of the encryption circuit. Thus, the login fingerprint data must be compared with encryption information which is stored by the main control circuit, when the login fingerprint data can pass, an automobile control circuit can be unblocked. When the original fingerprint sensing module can be replaced, the fingerprint lock can not be opened, and thus, the safety is increased. Moreover, the control function of the main control circuit has variety and can control a plurality of circuits, such as an ignition circuit, a power supply, a steering wheel lock, etc., of an automobile, and the operation is easy and convenient.

Description

Automobile is encrypted Fingerprint Lock

Technical field: the utility model relates to a kind of switch controlling device of motor circuit, particularly a kind of Fingerprint Lock control device.

Background technology: in order to improve the theftproof performance of motor vehicle, the Fingerprint Lock switch controlling device has been arranged now, be installed in the circuit such as igniting that are used for Control of Automobile in the car, Cai but Control of Automobile when having only fingerprint to coincide.But general Fingerprint Lock all has fingerprint sensing module and governor circuit, fingerprint is checked after the fingerprint sensing module is finished and is sent release information to governor circuit, if the fingerprint sensing module of his human homotype substitutes former module, then governor circuit is understood received signal equally, security reliability is desirable not enough, the past contact of safety needs and mechanical lock uses together in order to increase, and is convenient inadequately.

Summary of the invention: at the deficiencies in the prior art, the utility model provides a kind of safe, easy to use automobile to encrypt Fingerprint Lock.

The utility model comprises power circuit, fingerprint sensing module, governor circuit and execution output circuit, between fingerprint sensing module and governor circuit, be connected with encrypted circuit, in governor circuit, then be provided with corresponding decrypt circuit and partly constitute finger print data and encrypt and to check control device.

Finger print data of the present utility model exists in the fingerprint sensing module, as the first trace comparison device, the code that dispatches from the factory of finger print data and fingerprint sensing module is encrypted the back by the random rolling of encrypted circuit and is also existed in the governor circuit simultaneously, like this Deng Lu finger print data also must and the enciphered message of governor circuit storage compare, but by after just release Control of Automobile circuit.If former fingerprint sensing module is replaced, then can't open Fingerprint Lock, security reliability improves greatly like this, need not the combine lock and uses, and is very convenient.And the control diverse in function of governor circuit, a plurality of circuit such as firing circuit, power supply and handle lock that can Control of Automobile, easy and convenient to handle.

Further specify the utility model below in conjunction with drawings and Examples.

Description of drawings: Fig. 1 is the circuit block diagram of embodiment;

Fig. 2 is the line graph of encrypted circuit among Fig. 1;

Fig. 3 is master control and the line graph of carrying out output circuit among Fig. 1.

Embodiment: as shown in Figure 1, power circuit provides stable electricity consumption for the each several part circuit, be connected with the fingerprint sensing module on the governor circuit and carry out output circuit, between fingerprint sensing module and governor circuit, be connected with encrypted circuit, in governor circuit, then be provided with corresponding decrypt circuit and partly constitute finger print data and encrypt and to check control device.As shown in Figures 2 and 3, the encrypted circuit of present embodiment comprises a single-chip microcomputer U1 and peripheral components and parts, and governor circuit also comprises a single-chip microcomputer U2 and peripheral components and parts, and storing in this single-chip microcomputer U2 has decryption software to constitute the decrypt circuit part simultaneously.The fingerprint sensing module can adopt the FPC2000 type, and it is connected by data-interface CN1 with encrypted circuit.Encrypted circuit and decrypt circuit, promptly governor circuit also connects by data-interface CN2, and carrying out output circuit can be arranged on the circuit board with governor circuit, and this is carried out output circuit and then is connected with corresponding automotive interior circuit by interface CN3.

In the reality, Fingerprint Lock generally needs accessory power supply, main power source, the ignition switch of corresponding Control of Automobile, and also some need control handle lock.Generally can in output executing circuit, be provided with a plurality of performance elements, each performance element respectively with each circuit part control connection of automotive interior of correspondence control.As shown in Figure 3, accessory power supply, main power source and the ignition switch of the corresponding Control of Automobile of each performance element difference of relay J 1, J2, J3 and relative trigger triode T1, T2, T3 composition.Also be provided with the performance element that triode T5 to T8 bridge-type connects in the present embodiment, in order to the electronic type handle lock of Control of Automobile.The performance element that relay J 4 among Fig. 3 and corresponding triode T4 form is a stand-by unit, can expand the control function.According to the design needs, performance element quantity can also be more.

Use for convenience, on the next door of fingerprint sensing module, the same circuit board of general encrypted circuit is provided with and opens electric switch S1 and flameout switch S2, all is connected with governor circuit by data-interface CN2.When press open electric switch S1 after, the single-chip microcomputer U2 of governor circuit receives trigger triode T1 behind the signal, the automobile accessory power supply is opened in relay J 1 action, and body light light is connected, the fingerprint sensing module also is switched on simultaneously.After the fingerprint sensing module is accepted finger print data, if in the fingerprint sensing module, compare successfully, data are delivered to the decrypt circuit part by encrypted circuit, if pass through with the enciphered data contrast of reserving, then single-chip microcomputer U2 can make relay J 2 actions open the automobile main power source, and the bridge-type performance element that triode T5 to T8 forms also conducting is opened handle lock, and relay J 3 is also moved and is opened ignition switch, automobile can normally start, and this moment, accessory power supply was closed in relay J 1 disconnection.After pressing flameout switch S2, if the main power source of automobile for opening under the situation, single-chip microcomputer U2 can make relay J 1 to J3 disconnect, automobile flameout, the bridge-type performance element formed of triode T5 to T8 makes handle lock carry out the counter-rotating locking simultaneously.Change the fingerprint that to login if desired, the switch S 3 that then needs to be connected with the data-interface CN2 of governor circuit is connected, press flameout switch S2 simultaneously, to eliminate blank by last time the inside data when original correct fingerprint like this, then can the new finger print data of log, present embodiment can store five finger print datas, as required, also can increase memory space, store more fingerprints.

Claims

1, a kind of automobile is encrypted Fingerprint Lock, comprise power circuit, fingerprint sensing module, governor circuit and execution output circuit, it is characterized by: between fingerprint sensing module and governor circuit, be connected with encrypted circuit, in governor circuit, then be provided with corresponding decrypt circuit and partly constitute finger print data and encrypt and to check control device.

2, automobile according to claim 1 is encrypted Fingerprint Lock, it is characterized by: encrypted circuit comprises a single-chip microcomputer U1 and peripheral components and parts, governor circuit also comprises a single-chip microcomputer U2 and peripheral components and parts, and storing in this single-chip microcomputer U2 has decryption software to constitute the decrypt circuit part simultaneously.

3, automobile according to claim 1 and 2 is encrypted Fingerprint Lock, it is characterized by: be provided with a plurality of performance elements in the output executing circuit, each performance element respectively with each circuit part control connection of automotive interior of correspondence control.