CN203480576U - Radio frequency carmen lock - Google Patents
Radio frequency carmen lock Download PDFInfo
- Publication number
- CN203480576U CN203480576U CN201320604702.1U CN201320604702U CN203480576U CN 203480576 U CN203480576 U CN 203480576U CN 201320604702 U CN201320604702 U CN 201320604702U CN 203480576 U CN203480576 U CN 203480576U
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- China
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- radio frequency
- frequency card
- chip microcomputer
- current
- battery set
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Abstract
The utility model provides a radio frequency carmen lock. The radio frequency carmen lock comprises a power source, a voltage transforming and stabilizing circuit, a current-limiting resistor, a chargeable battery set, a single-chip microcomputer, a matrix button, an E2PROM, a motor driving circuit, a three-phase stepping motor, a lock tongue, a liquid crystal display screen, a radio frequency card reader-writer and a radio frequency card. The power source is connected with the voltage transforming and stabilizing circuit, the output end of the voltage transforming and stabilizing circuit is respectively connected with the single-chip microcomputer and the current-limiting resistor, the current-limiting resistor is connected with the chargeable battery set, the matrix button, the E2PROM, the motor driving circuit, the liquid crystal display screen and the radio frequency card reader-writer are respectively connected with the single-chip microcomputer, the motor driving circuit is connected with the three-phase stepping motor, and the three-phase stepping motor is connected with the lock tongue. The voltage transforming and stabilizing circuit is used for converting the input 220V-50HZ alternating current into the 5V direct current to be provided for the single-chip microcomputer and used for charging the chargeable battery set. The chargeable battery set is formed by connecting three 1.5V chargeable batteries in series; when a power failure happens, the chargeable battery set can serve as a standby battery, under the normal situation, the chargeable battery set is in a charged or dormant state, and the charging method is a constant-voltage charging method. The current-limiting resistor is used for limiting the charging current. The matrix button is a 3*4 matrix button. People can reset the password of a card with the help of the single-chip microcomputer, the matrix button, the E2PROM, the liquid crystal display screen, the radio frequency card reader-writer and the radio frequency card. People can finish the unlocking operation with the help of the radio frequency card, the radio frequency card reader-writer, the single-chip microcomputer, the E2PROM, the motor driving circuit, the three-phase stepping motor and the lock tongue. The radio frequency carmen lock is unlocked conveniently, the safety performance of the radio frequency carmen lock is good and a user can modify the password of the card by himself.
Description
Technical field
The utility model belongs to radio communication and Single-chip Controlling field, has been specifically related to a kind of radio frequency card door lock.
Background technology
Radio-frequency card is a kind of contactless read-write card, long service life and easy to use, and the mode of encrypting storage for the data acquisition in radio-frequency card, is difficult for being cracked.Early stage radio-frequency card adopts infrared mode send and receive signal, owing to existing a large amount of infrared rays to disturb in light around, cause the data that receive to have larger error, the poor reliability of unblanking, people made improvements afterwards, and the radio-frequency card that has proposed frequency of operation 13.56MHZ is M1 card, it has not only solved passive and this difficult problem of contact-free, the shortcoming that has also solved infrared radio frequency card poor anti jamming capability, M1 card has been widely used in the fields such as campus card, mass transit card.The utility model is applied in gate inhibition field by M1 radio-frequency card, and has increased password and revise system locking, and unblanks conveniently, the security performance of lock is high and password is revised conveniently, and password modification system is of the present utility model one large characteristic.
Development along with integrated circuit technology, on a very little plank, integrated microcomputer system is single-chip microcomputer, it is little that it has volume, the advantage such as low in energy consumption, has been widely used in Industry Control, the fields such as household electrical appliances, the utility model be take single-chip microcomputer as control center, in conjunction with various peripheral hardwares, completed and unblanked, the function that password is revised.
Although existing radio-frequency card has solved the problem that infrared ray disturbs, but there is no to solve the problem having a power failure suddenly, in order to tackle unexpected power failure, the utility model has increased standby power supply, this standby power supply is in series by the rechargeable battery of 3 joint 1.5V, it,, in charging or dormant state, is worked as standby power supply and uses during power failure under normal circumstances.
Summary of the invention
The utility model has solved existing radio frequency card door lock poor anti jamming capability, and password is revised difficulty, the problem having a power failure suddenly.
The technical solution adopted in the utility model is:
A kind of radio frequency card door lock, it is characterized in that, comprising: power supply, transformation mu balanced circuit, current-limiting resistance, rechargeable battery set, single-chip microcomputer, matrix press-key, E2PROM, motor-drive circuit, three-phase stepper motor, dead bolt, LCDs, rf read-write device and radio-frequency card; Wherein power supply is connected with transformation mu balanced circuit, the output of transformation mu balanced circuit is connected with current-limiting resistance with single-chip microcomputer respectively, current-limiting resistance is connected with rechargeable battery set, matrix press-key, E2PROM, motor-drive circuit, LCDs and rf read-write device are connected with single-chip microcomputer respectively, and motor-drive circuit is connected with three-phase stepper motor, three-phase stepper motor is connected with dead bolt;
Described power supply is 220V～50HZ alternating current, and transformation mu balanced circuit is by transformer, rectifier bridge, and filtering circuit and mu balanced circuit form, and it is output as 5V direct current;
Described rechargeable battery set is in series by the rechargeable battery of 3 joint 1.5V, and current-limiting resistance is connected with rechargeable battery set, limits charging current.
Described a kind of radio frequency card door lock, is characterized in that: rf read-write device can carry out read and write operation to radio frequency card under the driving of single-chip microcomputer.
Described a kind of radio frequency card door lock, is characterized in that: radio-frequency card adopts 13.56MHZ passive contact-free M1 card.
Described a kind of radio frequency card door lock, is characterized in that: single-chip microcomputer adopts STC89C52 single-chip microcomputer.
Described a kind of radio frequency card door lock, is characterized in that: LCDs adopts LCD12864 liquid crystal display.
Described a kind of radio frequency card door lock, is characterized in that: E2PROM adopts AT24C02.
Compared with the prior art, the utility model beneficial effect is embodied in:
1, solved the shortcoming of poor anti jamming capability.
2, solve password and revised difficult problem.
3, solved the problem of unexpected power failure.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of a kind of radio frequency card door lock of the utility model.
Fig. 2 is the button distribution plan of a kind of radio frequency card door lock matrix press-key of the utility model.
Fig. 3 is the password setting process flow diagram of a kind of radio frequency card door lock of the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
As shown in Figure 1, a kind of radio frequency card door lock of the utility model is comprised of power supply, transformation mu balanced circuit, current-limiting resistance, rechargeable battery set, single-chip microcomputer, matrix press-key, E2PROM, motor-drive circuit, three-phase stepper motor, dead bolt, LCDs, rf read-write device and radio-frequency card.
Power supply is 220V～50HZ alternating current, and power supply connects the input of transformation mu balanced circuit, and transformation mu balanced circuit is by transformer, rectifier bridge, and filtering circuit and mu balanced circuit form, and it is output as 5V direct current, rechargeable battery set is in series by the rechargeable battery of 3 joint 1.5V, current-limiting resistance is connected with rechargeable battery set, limit charging current, because this charging modes is constant-voltage charge, the voltage of rechargeable battery set and the voltage of current-limiting resistance and be a constant, while starting to charge, the voltage of rechargeable battery set is little and its internal resistance is very little, without current-limiting resistance, charging current will be very large, damage rechargeable battery set, carrying out along with charging, the voltage of rechargeable battery set rises gradually, charging current declines gradually, after charging finishes, 4.5V is constant for its voltage stabilization, now the voltage stabilization 0.5V of current-limiting resistance is constant, the output of transformation mu balanced circuit is directly to single-chip microcomputer power supply with for rechargeable battery set charging, as shown in Figure 2, its three lines are connected with the P1.0～P1.2 of single-chip microcomputer respectively the button distribution plan of matrix press-key, and four alignments are connected with the P1.3～P1.6 of single-chip microcomputer respectively.
E2PROM adopts I2C bus and single chip communication, and its clock line is connected with P2.1 with the P2.0 of single-chip microcomputer respectively with data line, and it is the data-carrier store that a kind of power-off data are not lost, storage space 256B.Motor-drive circuit drives three-phase stepper motor, its each while all being worked by 5V(mutually) or 4.5V(while having a power failure suddenly) power supply, pull-up resistor, triode forms, the base stage of triode is connected with the I/O mouth of single-chip microcomputer, and three base stages of driving circuit are connected to respectively the P2.2～P2.4 of single-chip microcomputer.The P0 mouth of single-chip microcomputer connects pull-up resistor, the output of P0 mouth is connected to two latch 74HC573, the Enable Pin of latch is connected with P2.5 with P1.7 respectively, LCDs adopts LCD12864, its data terminal D0～D7 connects respectively the output of latch 1, and liquid crystal Enable Pin LCDEN, data/command selection end RS are connected with the P3.4～P3.6 of single-chip microcomputer respectively with read/write selecting side WR.Rf read-write device adopts MF RC500 type card reader, its data terminal D0～D7 connects respectively the output of latch 2, under the effect of enable signal, select respectively latch 1 and latch 2 straight-through, while unblanking rf read-write device from radio-frequency card reading out data and with E2PROM in Data Comparison, complete and unblank, do not use LCDs, only use latch 2, now as long as select latch 2 straight-through, when carrying out password setting, only use LCDs, therefore as long as select latch 1 straight-through, at ensuing password modification stage, we use rf read-write device the data in radio-frequency card are carried out to write operation, now without liquid crystal display, therefore as long as select latch 2 straight-through, after write operation completes, LCDs quits work.
As shown in Figure 3, be the utility model password replacement process flow diagram.
When radio-frequency card is placed on rf read-write device, single-chip microcomputer reads the encrypted message in card by rf read-write device, and contrasts with there is the encrypted message of E2PROM, if password coupling, single-chip microcomputer drives three-phase stepper motor to drive dead bolt to rotate by motor-drive circuit, completes unlock operation.
Claims (6)
1. a radio frequency card door lock, it is characterized in that, comprising: power supply, transformation mu balanced circuit, current-limiting resistance, rechargeable battery set, single-chip microcomputer, matrix press-key, E2PROM, motor-drive circuit, three-phase stepper motor, dead bolt, LCDs, rf read-write device and radio-frequency card; Wherein power supply is connected with transformation mu balanced circuit, the output of transformation mu balanced circuit is connected with current-limiting resistance with single-chip microcomputer respectively, current-limiting resistance is connected with rechargeable battery set, matrix press-key, E2PROM, motor-drive circuit, LCDs and rf read-write device are connected with single-chip microcomputer respectively, and motor-drive circuit is connected with three-phase stepper motor, three-phase stepper motor is connected with dead bolt;
Described power supply is 220V～50HZ alternating current, and transformation mu balanced circuit is by transformer, rectifier bridge, and filtering circuit and mu balanced circuit form, and it is output as 5V direct current;
Described rechargeable battery set is in series by the rechargeable battery of 3 joint 1.5V, and current-limiting resistance is connected with rechargeable battery set, limits charging current.
2. a kind of radio frequency card door lock according to claim 1, is characterized in that: rf read-write device can carry out read and write operation to radio frequency card under the driving of single-chip microcomputer.
3. a kind of radio frequency card door lock according to claim 1, is characterized in that: radio-frequency card adopts 13.56MHZ passive contact-free M1 card.
4. a kind of radio frequency card door lock according to claim 1, is characterized in that: single-chip microcomputer adopts STC89C52 single-chip microcomputer.
5. a kind of radio frequency card door lock according to claim 1, is characterized in that: LCDs adopts LCD12864 liquid crystal display.
6. a kind of radio frequency card door lock according to claim 1, is characterized in that: E2PROM adopts AT24C02.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320604702.1U CN203480576U (en) | 2013-09-29 | 2013-09-29 | Radio frequency carmen lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320604702.1U CN203480576U (en) | 2013-09-29 | 2013-09-29 | Radio frequency carmen lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203480576U true CN203480576U (en) | 2014-03-12 |
Family
ID=50228869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320604702.1U Expired - Fee Related CN203480576U (en) | 2013-09-29 | 2013-09-29 | Radio frequency carmen lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203480576U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106504135A (en) * | 2016-12-22 | 2017-03-15 | 广东力维智能锁业有限公司 | Self-service take the Hospitality management system and its electronic lock for also blocking |
-
2013
- 2013-09-29 CN CN201320604702.1U patent/CN203480576U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106504135A (en) * | 2016-12-22 | 2017-03-15 | 广东力维智能锁业有限公司 | Self-service take the Hospitality management system and its electronic lock for also blocking |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20140929 |
|
| EXPY | Termination of patent right or utility model |