CN207847300U - Lockset with random cipher and key - Google Patents
Lockset with random cipher and key Download PDFInfo
- Publication number
- CN207847300U CN207847300U CN201820196687.4U CN201820196687U CN207847300U CN 207847300 U CN207847300 U CN 207847300U CN 201820196687 U CN201820196687 U CN 201820196687U CN 207847300 U CN207847300 U CN 207847300U
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- China
- Prior art keywords
- lockset
- microcontroller
- random cipher
- contact
- key
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model is related to locksets and key with random cipher, motor-controlled plectrum is equipped in lockset, the plectrum is connect with bolt, the control circuit being connect with power cord is additionally provided on lockset, the step-down coupling circuit being connected with power cord is equipped in the control circuit, step-down coupling circuit is connected to the power input of microcontroller, the control terminal of microcontroller is connect by composite crystal pipe driving chip with the motor, the power output end of microcontroller is connected with power supply output contact, and the ports I/O of microcontroller are connected with first data transmission contact.The lockset and key with random cipher of the utility model can randomly generate the password of unlock next time so that each unlocking pin is different from, and effectively increases the anti-theft performance of lockset after each unlock.
Description
Technical field
The utility model is related to locksets and key, are concretely the lockset and key with random cipher.
Background technology
Increasingly paid attention to by people with the development of society, interior is antitheft.Traditional theftproof lock either mechanical cipher is anti-
It steals or electronic cipher is put into, password is fixed after setting, thus is easy to cause password and is easily revealed, easily crack, tool
There is security risk.
Utility model content
The utility model provides a kind of lockset and key with random cipher, by being randomly generated down after unlocking every time
The secondary password used, makes each unlocking pin be different from, and improves the anti-theft performance of lockset.
The lockset with random cipher of the utility model is equipped with motor-controlled plectrum, the plectrum in lockset
It is connect with bolt, the control circuit being connect with power cord is additionally provided on lockset, be equipped in the control circuit and power cord
Connected step-down coupling circuit, step-down coupling circuit are connected to the power input of microcontroller, and the control terminal of microcontroller passes through again
Synthetic body pipe driving chip is connect with the motor, and the power output end of microcontroller is connected with power supply output contact, microcontroller
The ports I/O be connected with first data transmission contact.
Further, it is equipped with bridge rectifier between microcontroller and step-down coupling circuit, input current can be made regular.
Further, bridge rectifier is connected to microcontroller by voltage-stablizer.
Power cut-off causes lockset that can not unlock in order to prevent, and the power input of microcontroller is also connect with battery, works as electricity
Can be that microcontroller and entire circuit are powered by battery when source powers off.
Further, the sound control end of microcontroller is connected with buzzer by NPN type triode, when unlocking pin matches
Or when mistake, different prompts can be carried out by buzzer.
On this basis, the light output end of microcontroller is connected with indicator light, is carried to unlocked state by indicator light
Show.
Further, lockset is equipped with handle.
The utility model additionally provides a kind of key with random cipher for above-mentioned lockset, is equipped at key bit
First metal structure and the second metal structure, power input contact respectively corresponding with the power supply output contact, Yi Jiyu
The first data transmission contact corresponding second data transmission contact is equipped in the cavity in key defeated with the power supply
Enter the eeprom chip of contact and the second data transmission contact portion.Eeprom chip can preserve password under power failure state.
After the key with random cipher is inserted into the lockset, pass through the power input in first metal structure
Contact is contacted with the power supply output contact of lockset, passes through first of the second data transmission contact and lockset in the second metal structure
Data transmission contact carries out electric energy supply to key and the password preserved in eeprom chip is transferred to the monolithic of lockset
It is matched in machine, if successful match, microcontroller connects motor and rotates plectrum, to drive bolt to unlock, and carries out corresponding
Sound/light prompt.After the completion of unlock, microcontroller generates new password at random, is saved and transferred in the eeprom chip of key
It preserves, has achieved the purpose that each unlocking pin is all different.
What the control program arrived involved in the utility model was generated with current existing electronic password lock and random cipher
Program is similar, is not the innovation place of the utility model.
The lockset and key with random cipher of the utility model can randomly generate next unlock after each unlock
Password so that each unlocking pin is different from, and effectively increases the anti-theft performance of lockset.
Specific implementation mode with reference to embodiments remakes further specifically the above of the utility model
It is bright.But the range that this should not be interpreted as to the above-mentioned theme of the utility model is only limitted to example below.It is new not departing from this practicality
In the case of the above-mentioned technological thought of type, the various replacements or change made according to ordinary skill knowledge and customary means,
Should include in the scope of the utility model.
Description of the drawings
Fig. 1 is the internal structure schematic diagram for the lockset that the utility model has random cipher.
Fig. 2 is the circuit diagram for the lockset that the utility model has random cipher.
Fig. 3 is the structural schematic diagram for the key that the utility model has random cipher.
Fig. 4 is the A-A sectional views of Fig. 3.
Fig. 5 is the circuit diagram for the key that the utility model has random cipher.
Specific implementation mode
The lockset with random cipher of the utility model as shown in Figure 1, handle 1 is equipped on lockset, is set in lockset
There are the plectrum 4 controlled by motor 8, the plectrum 4 to be connect with bolt 3.The control circuit being connect with power cord 6 is additionally provided on lockset
5, power cord 6 connects 220V alternating currents.
As shown in Fig. 2, being equipped with the step-down coupling circuit being connected with the 220V alternating currents AC in the control circuit 5
T1, step-down coupling circuit T1 are connected to 89C52 type microcontrollers U1's by the voltage-stablizer U2 of bridge rectifier BR and 78L05 type
Power input.Meanwhile the power input of microcontroller U1 is also associated with battery J2, wherein battery J2 is set to being opened and closed for lockset
Battery compartment 7 in.Composite crystal pipe driving chip U3 and the motor 8 of the control terminal of microcontroller U1 by ULN2003A types
Connection.The ports I/O that the power output end of microcontroller U1 is connected with power supply output contact VCC1, GND1, microcontroller U1 are connected with
First data transmission contact SDA1, SCL1.The sound control end of microcontroller U1 is connected with buzzer by NPN type triode Q1
The light output end of BZ, microcontroller U1 are connected with indicator light D1.It is used to prompt unlocked state.Buzzer BZ is set to lock
In the loudspeaker place position 2 of tool.
For the key 9 with random cipher of above-mentioned lockset, as shown in Figures 3 to 5, the first gold medal is equipped at key bit
Belong to structure 91 and the second metal structure 92, the respectively corresponding power input contact with power supply the output contact VCC1, GND1
VCC2, GND2, and with first data transmission contact SDA1, the SCL1 corresponding second data transmission contact SDA2,
SCL2.In cavity 93 in key be equipped with the power input contact VCC2, GND2 and the second data transmission contact SDA2,
The AT24C02 type eeprom chips U4 of SCL2 connections.
After the key 9 with random cipher is inserted into the lockset, pass through the power supply in first metal structure 91
Contact VCC2 is inputted, power supply output contact VCC1, the GND1 contact of GND2 and lockset pass through second in the second metal structure 92
The first data transmission contact SDA1 of data transmission contact SDA2, SCL2 and lockset, SCL1 are contacted, and electric energy confession is carried out to key 9
It should be matched with being transferred to the password preserved in eeprom chip U4 in the microcontroller U1 of lockset.It is single if successful match
Piece machine U1 connects motor 8 and rotates plectrum 4, to drive bolt 3 to unlock, and is carried out accordingly by buzzer BZ and indicator light D1
Sound/light prompt, on the contrary motor 8 does not rotate, and cannot unlock, and carry out different prompts by buzzer BZ and indicator light D1.Solution
After the completion of lock, microcontroller U1 generates new password at random, is saved and transferred in the eeprom chip U4 of key 9 and preserves, reaches
The purpose that each unlocking pin is all different.
Claims (8)
1. the lockset with random cipher, it is characterized in that：The plectrum (4) controlled by motor (8), the plectrum are equipped in lockset
(4) it is connect with bolt (3), the control circuit being connect with power cord (6) is additionally provided on lockset, is equipped in the control circuit
The step-down coupling circuit (T1) being connected with power cord (6), step-down coupling circuit (T1) are connected to the power input of microcontroller (U1)
End, the control terminal of microcontroller (U1) are connect by composite crystal pipe driving chip (U3) with the motor (8), microcontroller (U1)
Power output end be connected with power supply output contact (VCC1, GND1), the ports I/O of microcontroller (U1) are connected with the first data biography
Defeated contact (SDA1, SCL1).
2. the lockset with random cipher as described in claim 1, it is characterized in that：In microcontroller (U1) and step-down coupling circuit
(T1) bridge rectifier (BR) is equipped between.
3. the lockset with random cipher as claimed in claim 2, it is characterized in that：Bridge rectifier (BR) passes through voltage-stablizer
(U2) it is connected to microcontroller (U1).
4. the lockset with random cipher as described in claim 1, it is characterized in that：The power input of microcontroller (U1) also with
Battery (J2) connects.
5. the lockset with random cipher as described in one of Claims 1-4, it is characterized in that：The sound control of microcontroller (U1)
End processed is connected with buzzer (BZ) by NPN type triode (Q1).
6. the lockset with random cipher as described in one of Claims 1-4, it is characterized in that：The light of microcontroller (U1) is defeated
Outlet is connected with indicator light (D1).
7. the lockset with random cipher as described in one of Claims 1-4, it is characterized in that：Lockset is equipped with handle (1).
8. for the key with random cipher of one of claim 1 to 7 lockset, it is characterized in that：It is set at key bit
There are the first metal structure (91) and the second metal structure (92), it is respectively corresponding with the power supply output contact (VCC1, GND1)
Power input contact (VCC2, GND2), and corresponding second number with the described first data transmission contact (SDA1, SCL1)
Be equipped with according to transmission contact (SDA2, SCL2), in the cavity (93) in key with the power input contact (VCC2, GND2) and
The eeprom chip (U4) of second data transmission contact (SDA2, SCL2) connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820196687.4U CN207847300U (en) | 2018-02-05 | 2018-02-05 | Lockset with random cipher and key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820196687.4U CN207847300U (en) | 2018-02-05 | 2018-02-05 | Lockset with random cipher and key |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207847300U true CN207847300U (en) | 2018-09-11 |
Family
ID=63410734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820196687.4U Active CN207847300U (en) | 2018-02-05 | 2018-02-05 | Lockset with random cipher and key |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207847300U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108118974A (en) * | 2018-02-05 | 2018-06-05 | 攀枝花学院 | Lockset and key with random cipher |
-
2018
- 2018-02-05 CN CN201820196687.4U patent/CN207847300U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108118974A (en) * | 2018-02-05 | 2018-06-05 | 攀枝花学院 | Lockset and key with random cipher |
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