CN104405210A - Resistive anti-theft lock device - Google Patents
Resistive anti-theft lock device Download PDFInfo
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- CN104405210A CN104405210A CN201410735352.1A CN201410735352A CN104405210A CN 104405210 A CN104405210 A CN 104405210A CN 201410735352 A CN201410735352 A CN 201410735352A CN 104405210 A CN104405210 A CN 104405210A
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- chip microcomputer
- resistance
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- key
- lock device
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Abstract
The invention discloses a resistive anti-theft lock device. The resistive anti-theft lock device comprises a lock and a key for unlocking. The lock is provided with a single chip module, an unlocking circuit and a power source; the single chip module comprises a single chip and a peripheral auxiliary circuit for assisting the single chip in running; the power source supplies power for the single chip; the unlocking circuit is connected to the output end of the single chip. The key is provided with a plurality of key resistors and an insulating carriers for carrying the key resistors; the plurality of key resistors are connected in parallel, and each key resistor is connected in series with a protective resistor for dividing voltage to form a resistive circuit. Each resistive circuit is connected to the single chip in a parallel way; when the single chip detects that the voltage of each resistive circuit is within a voltage range set inside the single chip, the single chip drives the unlocking circuit to realize unlocking. According to the resistive anti-theft lock device, the key resistors different in resistance are adopted, different key information is established according to different voltage division information of the key resistors, and unlocking is realized by detecting the voltage division information.
Description
Technical field
The present invention relates to theftproof lock field, particularly relate to a kind of resistance anti-theft lock device.
Background technology
In daily life, be no matter on security door, on cabinet door, on car door, lock is seen everywhere.Lock is generally divided into the Fingerprint Lock, face lock etc. of mechanical lock, coded lock and modern high technology, but all locks nearly all cannot avoid skilled unlocking.Mechanical lock all needs to provide the kinetic energy of unblanking with the rotation of key mostly, and this structure also cannot avoid the violence of rotary type to unblank, and coded lock, Fingerprint Lock etc. have the possibility be cracked according to the technology in modern times.Therefore, the research emphasis that technical unlocking and traditional violence opened lock are those skilled in the art is fundamentally stopped.
Summary of the invention
In order to solve the technical problem fundamentally stopping technical unlocking and traditional violence opened lock, the invention provides a kind of resistance anti-theft lock device.
The present invention is achieved in that a kind of resistance anti-theft lock device, and it comprises lock and the key for unblanking; Wherein, this lock is provided with one-chip computer module, unlock circuit, power supply, the peripheral auxiliary circuits that this one-chip computer module comprises single-chip microcomputer and runs for this single-chip microcomputer auxiliary, this power supply is powered to this single-chip microcomputer, and this unlock circuit is connected to the output of this single-chip microcomputer; This key is provided with some key resistance and carries the insulating carrier of this some key resistance, and this some key resistor coupled in parallel connects, and each key resistant series has a protective resistance for dividing potential drop to form a road resistance circuit; Every resistance circuit accesses this single-chip microcomputer with the form of parallel connection, and this single-chip microcomputer is when detecting that the voltage of every road resistance circuit is all in the voltage range of this single-chip microcomputer inner setting, and this unlock circuit of this MCU driving is unblanked.
As the further improvement of such scheme, this lock is also provided with the warning circuit be connected with this single-chip microcomputer, when this single-chip microcomputer is in the voltage range of this single-chip microcomputer inner setting of voltage deviation at least one road resistance circuit being detected, this warning circuit of this MCU driving is reported to the police.Preferably, this warning circuit comprises frame type electromagnet, audible-visual annunciator, this audible-visual annunciator is connected with this single-chip microcomputer by this frame type electromagnet, and this monolithic function makes this frame type magnet spool be energized, and the iron core of this frame type electromagnet is connected this audible-visual annunciator thus by adhesive.Further, this warning circuit also comprises Delayed conducting module, this Delayed conducting model calling is between this frame type electromagnet and this single-chip microcomputer, for when this microprocessor detect is to the voltage range of this single-chip microcomputer inner setting of voltage deviation of at least one road resistance circuit, make this frame type magnet spool delay power.
As the further improvement of such scheme, this lock is also provided with the A/D change-over circuit be connected between this resistance circuit and this single-chip microcomputer.
As the further improvement of such scheme, this unlock circuit adopts the mode of frame type dead bolt electromagnetic actuation to unblank, and directly accesses this single-chip microcomputer after frame type dead bolt electromagnet access power supply.Preferably, this unlock circuit is also provided with indoor unlock button, and directly skipped by dead bolt electromagnet between two electrodes that this single-chip microcomputer is connected on this power supply and form closed-loop path, this indoor unlock button is the switch of this closed-loop path.
As the further improvement of such scheme, these power supply circuits are provided with reserve battery.Preferably, this reserve battery accesses this resistance anti-theft lock device by the constant close contact of a relay, this relay obtains electric this constant close contact that makes and disconnects when this power supply is powered, and dead electricity makes this constant close contact adhesive so that this reserve battery is accessed this resistance anti-theft lock device when this power supply power-off.
Resistance anti-theft lock device of the present invention adopts the key resistance of different resistance, and different according to different resistance dividing potential drop in circuit, the key information therefore formed is different, realizes unblanking by the dividing potential drop information detecting key resistance.Compared with conventional art, the present invention possesses following beneficial effect:
1. the present invention resistance value expresses key information, manufactures simple, with low cost;
2. more safer than traditional mechanical lock, the kinetic energy that the present invention adopts electric energy to provide to unblank, key need not rotate after inserting, and completely avoid traditional violence and opens;
3. the present invention is also provided with warning function, can prevent from measuring by technological means resistance of unblanking, thus has stopped technical unlocking completely;
4. when the number ratio of key resistance is more, change in resistance scope is large, and the resistance of all key resistance of not so good conjecture, improves security performance, reduces and cracks probability;
5. need not change lock after key loss, as long as change the voltage of unblanking in single-chip microcomputer after key loss, original key just lost efficacy, and simultaneously according to newly-installed voltage preparation key of unblanking, changed the inconvenience of lock core after avoiding key loss.
Accompanying drawing explanation
The control principle block diagram of the resistance anti-theft lock device that Fig. 1 provides for better embodiment of the present invention.
Fig. 2 is the Key structure schematic diagram of resistance anti-theft lock device in Fig. 1.
Fig. 3 is the structural representation of the lock of resistance anti-theft lock device in Fig. 1.
Fig. 4 is the rough schematic view of key in Fig. 2.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
See also Fig. 1, Fig. 2, Fig. 3, the resistance anti-theft lock device that better embodiment of the present invention provides comprises lock 1 and the key 2 for unblanking.
This lock 1 is provided with one-chip computer module, unlock circuit, power supply 11, warning circuit 12.The peripheral auxiliary circuits that this one-chip computer module comprises single-chip microcomputer 13 and runs for this single-chip microcomputer 13 auxiliary.This power supply 11 is powered to this single-chip microcomputer 13, and this unlock circuit is connected to 13 outputs of this single-chip microcomputer.This power supply 11 can adopt 12V, and the Switching Power Supply of 6A is powered, and power is enough and stability is strong.
This power supply 11 can be provided with reserve battery 3, this reserve battery 3 accesses this resistance anti-theft lock device by the constant close contact of a relay, this relay obtains electric this constant close contact that makes and disconnects when this power supply 11 is powered, and dead electricity makes this constant close contact adhesive so that this reserve battery 3 is accessed this resistance anti-theft lock device when this power supply 11 power-off.This reserve battery 3 can adopt DC12V to export the lithium battery of 1800mAh, voltage stabilization, and small volume.So once have a power failure, relay constant close contact closes, and reserve battery 3 starts automatically.
This key 2 is provided with some key resistance R1 and carries the insulating carrier 21 of this some key resistance R2, as shown in Figure 2.Key resistance R1 is drawn, by scolding tin 22 welding insulation carrier 21 by lead-in wire.In the present embodiment, the quantity of key resistance R1 is illustrated for 4.4 key resistance R1 are connected in parallel, and each key resistance R1 is in series with a protective resistance R2 for dividing potential drop forms a road resistance circuit, refer to Fig. 4.Protective resistance R2 can be arranged on key 2, also can be arranged on lock 1, and make key 2 easy to carry to simplify key 2, protective resistance R2 is preferably arranged on lock 1.Every resistance circuit accesses this single-chip microcomputer 13 with the form of parallel connection, and this single-chip microcomputer 13 is when detecting that the voltage of every road resistance circuit is all in the voltage range of this single-chip microcomputer 13 inner setting, and this single-chip microcomputer 13 drives this unlock circuit to unblank.When this single-chip microcomputer 13 is in the voltage range of this single-chip microcomputer 13 inner setting of voltage deviation at least one road resistance circuit being detected, this single-chip microcomputer 13 drives this warning circuit 12 to report to the police.
4 key resistance R1 built-in in key 2, when key 2 inserts the keyhole 5 of lock 1,4 key resistance R1 can with the form of parallel connection access 5V voltage two ends, and every bar branch road has one piece for the protective resistance R2 of dividing potential drop.Because the resistance of key resistance R1 is different, the dividing potential drop in every bar branch road is also different.Single-chip microcomputer 13 judges resistance by the analog quantity of inspection key resistance R1 both end voltage, thus realizes controlling.
The resistance of correct key resistance R1 picks out at random, as 4 road magnitudes of voltage can be: 1.01V, 1.13V, 3.31V, 4.23V.Resistance itself is dissipative cell, and electric current flows through it can produce interior energy, and resistance can change, therefore, can setting voltage tolerance in the programming of this single-chip microcomputer 13, voltage error fluctuates 0.02V.Be directly proportional to resistance from voltage in series circuit: key resistance R1/ (protective resistance R2+ key resistance R1)=key resistance R1 dividing potential drop/5V.As shown in the table by calculating permission 4 key resistance R1 change in resistance scopes.
| Sequence number | R1min/Ω | R1 reality/Ω | R1max/Ω | R2/Ω |
| 1 | 54.31 | 56.00 | 57.08 | 220.00 |
| 2 | 179.77 | 180.00 | 188.18 | 630.00 |
| 3 | 423.27 | 430.00 | 438.68 | 220.00 |
| 4 | 1172.41 | 1200.00 | 1246.67 | 220.00 |
Because key 2 has the regular hour plugging and unplugging in process, this process likely causes alarm to report by mistake, in a program, utilizes cleverly and extends function and solve this problem.
Single-chip microcomputer 13 can be the chip with A/D translation function, also can separately establish A/D change-over circuit, in the present embodiment, single-chip microcomputer 13 adopts independent power supply, low-power consumption, 8-bitCMOS data acquisition device, PCF8591 chip, it has 4 analog inputs, 1 modulating output and 1 serial T
2c EBI, just has and is connected A/D change-over circuit 16, A/D change-over circuit 16 and can adopts PCF8591A/D chip between this some roads resistance circuit with this single-chip microcomputer 13.The peripheral auxiliary circuits of single-chip microcomputer 13 generally comprises reset circuit 14, clock circuit 15 etc., and during embody rule, mu balanced circuit can adopt 7805 circuit, and crystal oscillator can use 12M.
This is to single-chip microcomputer 13, and resistor lock powers on, and single-chip microcomputer enters duty after initializing, and four road voltages convert to after data signal through PCF8591A/D chip to be sent in single-chip microcomputer 13, compared with the magnitude of voltage preset, has the situation that three kinds possible with single-chip microcomputer 13.If 1, single-chip microcomputer 12 does not detect key 2, then resistor lock 1 is in circular wait state; If the voltage of 2 every road resistance circuits is all in the voltage range of this single-chip microcomputer 13 inner setting, single-chip microcomputer 12 control relay adhesive unlock circuit; 3, the voltage range of this single-chip microcomputer 13 inner setting of voltage deviation of at least one road resistance circuit is detected, single-chip microcomputer 13 control relay closed alarm circuit exists 12, alarm equipment alarm.
In warning circuit 12 part, this warning circuit comprises frame type electromagnet, audible-visual annunciator.Use audible-visual annunciator (built-in buzzer) to report to the police, use the mode of frame type electromagnet energising adhesive to connect alarm.Coil electricity outside electromagnet, iron core is by adhesive, then alarm is switched on.Because iron core cannot be automatically reset by after adhesive, so once alarm starts, cannot be closed outdoor, alarm will be reported to the police always.Only have manual by iron core playback indoor, namely press termination alarm button, alarm circuit 12 just can be disconnected, stop alarm.Of course, except sound and light alarm, can also network alarm.
In order to prevent the wrong report caused by circuit spread of voltage a middle or short term or key weak vibrations, in the present embodiment, this alarm circuit 12 is also prepared Delayed conducting module.Single-chip microcomputer 13 is directly actuated is Delayed conducting module, this Delayed conducting model calling is between this frame type electromagnet and this single-chip microcomputer 13, for this single-chip microcomputer 13 inner setting of voltage deviation of at least one road resistance circuit detected at this single-chip microcomputer 13 voltage range in time, make this frame type magnet spool delay power.The effect of this Delayed conducting module is when warning circuit 12 connected by single-chip microcomputer 12, can of short duration prolongation ON time, prevents the wrong report caused by circuit spread of voltage a middle or short term or key weak vibrations.
Unlock circuit part adopts the mode of frame type dead bolt electromagnet 17 adhesive to unblank, and frame type dead bolt electromagnet 17 directly accesses this single-chip microcomputer 13 after accessing power supply, controls.Simultaneously also be provided with indoor unlock button in this part, dead bolt electromagnet directly skipped between two both positive and negative polarities that single-chip microcomputer 13 is connected on power supply 11 and form closed-loop path, the indoor unlock button i.e. switch of circuit for this reason.
Resistance anti-theft lock device of the present invention adopts the key resistance of different resistance, and different according to different resistance dividing potential drop in circuit, the key information therefore formed is different, realizes unblanking by the dividing potential drop information detecting key resistance.Compared with conventional art, the present invention possesses following beneficial effect:
1. the present invention resistance value expresses key information, manufactures simple, with low cost;
2. more safer than traditional mechanical lock, the kinetic energy that the present invention adopts electric energy to provide to unblank, key need not rotate after inserting, and completely avoid traditional violence and opens;
3. the present invention is also provided with warning function, can prevent from measuring by technological means resistance of unblanking, thus has stopped technical unlocking completely;
4. when the number ratio of key resistance is more, change in resistance scope is large, and the resistance of all key resistance of not so good conjecture, improves security performance, reduces and cracks probability;
5. need not change lock after key loss, as long as change the voltage of unblanking in single-chip microcomputer after key loss, original key just lost efficacy, and simultaneously according to newly-installed voltage preparation key of unblanking, changed the inconvenience of lock core after avoiding key loss.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a resistance anti-theft lock device, it comprises lock and the key for unblanking; It is characterized in that: this lock is provided with one-chip computer module, unlock circuit, power supply, the peripheral auxiliary circuits that this one-chip computer module comprises single-chip microcomputer and runs for this single-chip microcomputer auxiliary, this power supply is powered to this single-chip microcomputer, and this unlock circuit is connected to the output of this single-chip microcomputer; This key is provided with some key resistance and carries the insulating carrier of this some key resistance, and this some key resistor coupled in parallel connects, and each key resistant series has a protective resistance for dividing potential drop to form a road resistance circuit; Every resistance circuit accesses this single-chip microcomputer with the form of parallel connection, and this single-chip microcomputer is when detecting that the voltage of every road resistance circuit is all in the voltage range of this single-chip microcomputer inner setting, and this unlock circuit of this MCU driving is unblanked.
2. resistance anti-theft lock device as claimed in claim 1, it is characterized in that: this lock is also provided with the warning circuit be connected with this single-chip microcomputer, when this single-chip microcomputer is in the voltage range of this single-chip microcomputer inner setting of voltage deviation at least one road resistance circuit being detected, this warning circuit of this MCU driving is reported to the police.
3. resistance anti-theft lock device as claimed in claim 2, it is characterized in that: this warning circuit comprises frame type electromagnet, audible-visual annunciator, this audible-visual annunciator is connected with this single-chip microcomputer by this frame type electromagnet, this monolithic function makes this frame type magnet spool be energized, and the iron core of this frame type electromagnet is connected this audible-visual annunciator thus by adhesive.
4. resistance anti-theft lock device as claimed in claim 3, it is characterized in that: this warning circuit also comprises Delayed conducting module, this Delayed conducting model calling is between this frame type electromagnet and this single-chip microcomputer, for when this microprocessor detect is to the voltage range of this single-chip microcomputer inner setting of voltage deviation of at least one road resistance circuit, make this frame type magnet spool delay power.
5. resistance anti-theft lock device as claimed in claim 1, is characterized in that: this lock is also provided with the A/D change-over circuit be connected between this resistance circuit and this single-chip microcomputer.
6. resistance anti-theft lock device as claimed in claim 1, is characterized in that: this unlock circuit adopts the mode of frame type dead bolt electromagnetic actuation to unblank, and directly accesses this single-chip microcomputer after frame type dead bolt electromagnet access power supply.
7. resistance anti-theft lock device as claimed in claim 6, it is characterized in that: this unlock circuit is also provided with indoor unlock button, directly skipped by dead bolt electromagnet between two electrodes that this single-chip microcomputer is connected on this power supply and form closed-loop path, this indoor unlock button is the switch of this closed-loop path.
8. resistance anti-theft lock device as claimed in claim 1, is characterized in that: these power supply circuits are provided with reserve battery.
9. resistance anti-theft lock device as claimed in claim 8, it is characterized in that: this reserve battery accesses this resistance anti-theft lock device by the constant close contact of a relay, this relay obtains electric this constant close contact that makes and disconnects when this power supply is powered, and dead electricity makes this constant close contact adhesive so that this reserve battery is accessed this resistance anti-theft lock device when this power supply power-off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410735352.1A CN104405210A (en) | 2014-12-05 | 2014-12-05 | Resistive anti-theft lock device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410735352.1A CN104405210A (en) | 2014-12-05 | 2014-12-05 | Resistive anti-theft lock device |
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| CN104405210A true CN104405210A (en) | 2015-03-11 |
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| CN201410735352.1A Pending CN104405210A (en) | 2014-12-05 | 2014-12-05 | Resistive anti-theft lock device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425107A (en) * | 2020-03-31 | 2020-07-17 | 广东金宇恒软件科技有限公司 | Anti-theft device for financial management system |
| CN113668956A (en) * | 2021-07-27 | 2021-11-19 | 郭鹏昭 | Anti-theft lock based on resistance change |
| CN115288526A (en) * | 2022-06-30 | 2022-11-04 | 上海创米智能科技有限公司 | Intelligent door and double authentication method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425107A (en) * | 2020-03-31 | 2020-07-17 | 广东金宇恒软件科技有限公司 | Anti-theft device for financial management system |
| CN111425107B (en) * | 2020-03-31 | 2021-07-16 | 广东金宇恒软件科技有限公司 | Anti-theft device for financial management system |
| CN113668956A (en) * | 2021-07-27 | 2021-11-19 | 郭鹏昭 | Anti-theft lock based on resistance change |
| CN113668956B (en) * | 2021-07-27 | 2022-12-20 | 北京智胜远景科技有限公司 | Anti-theft lock based on resistance change |
| CN115288526A (en) * | 2022-06-30 | 2022-11-04 | 上海创米智能科技有限公司 | Intelligent door and double authentication method thereof |
| CN115288526B (en) * | 2022-06-30 | 2024-02-06 | 上海创米智能科技有限公司 | Intelligent door and dual authentication method thereof |
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Application publication date: 20150311 |