CN203813506U - Electronic lock having backup system - Google Patents

Abstract

The utility model relates to technology in the field of electronic locks, and especially provides an electronic lock having a backup system. The electronic lock having the backup system comprises an input module, a control module, a drive module, a power supply module, a self-check module and a backup module. The backup module mainly includes a mechanical lock cylinder, a main cotter pin, a mechanical lock core, a mechanical lock key hole, a cotter pin contact, a charge coil iron core, a charge coil, a cotter pin slideway, a discharge coil, a discharge coil iron core, a backup circuit board, an electricity storage capacitor, a charge signal line and a discharge signal line. The charge coil, the discharge coil and the electricity storage capacitor can control a position of the main cotter pin when the electronic lock is in a normal operation state or in a fault state, and enables or disables the backup module. Compared with the prior art, the electronic lock uses the backup system. When an access control system is in a normal state, the mechanical lock core cannot be used and does not consume extra electricity, and safety performance and low power consumption of the access control system are guaranteed; when a fault occurs in the access control system, the mechanical lock core can be used, and reliability of the access control system is ensured.

Description

With the electronic lock of back-up system

Technical field

The utility model relates to electronic lock art, refers in particular to a kind of electronic lock with back-up system.

Background technology

Than traditional mechanical lock, electronic lock is because skilled unlocking difficulty is large, uses conveniently, has been subject to gradually consumer's accreditation, and full-fledged along with electronic technology, and the function of electronic lock is gradually improved, and this has accelerated the universal of electronic lock.

But door lock, as a part for gate control system, once break down, means dead end, therefore door lock has high requirement to stability, and traditional mechanical lock is due to technology maturation, and structure is relatively simple, and generally use pure mechanical structure, therefore can meet stability requirement.Electronic lock, because inside has been used a large amount of electronic devices and components, comprises Programmable Logic Controller, and the Power supply that electronic lock need to be stable, and this has all limited the global reliability of system.Many people have proposed relevant solution for this reason, patent of invention 200910207385.8 discloses a kind of mechanical lock, coded lock standby opening mechanism, it has increased a mechanical combination pin lock and mechanical blade lock as standby opening mechanism on the basis of original lockset, pure mechanical structure has improved overall reliability really, although it has covered keyhole with trade mark and publicity paster, improve disguise, but the existence of this unlatching means inevitably significantly reduces the fail safe of gate control system.Utility model patent 200620040025.5 and 200620040026.X disclose two kinds of supply units of unblanking for subsequent use, the in the situation that of gate control system power-off, power respectively, to complete unlock operation with contactless and contact means from outside to gate control system.This means are reasonably for the hotel's door lock that has personal management, but for family, ask for help and enter not go indoor in the situation that to take an electric power system, and obviously this process is too loaded down with trivial details, is not suitable for promoting.

Utility model content

The purpose of this utility model is exactly for the problems referred to above, proposes one and still can effectively open the door in the time of the system failure, power-off, and keep electronic lock fail safe, the electronic lock of low-power consumption feature.

For achieving the above object, technical solution of the present utility model is: with the electronic lock of back-up system, comprise input module, control module, driver module, power module, selftest module and spare module.Wherein spare module comprises mechanical lock cylindrical shell, main pellet, mechanical lock core, mechanical lock keyhole, lower pellet, pellet contact, pellet contact interface A, pellet contact interface B, upper pellet, marble spring, charge coil interface A, charge coil interface B, charge coil iron core, charge coil, pellet slideway, discharge coil, discharge coil iron core, discharge coil interface A, discharge coil interface B, stand-by circuit plate, storage capacitor, charging signals line and discharge signal line.Described main pellet is arranged in pellet slideway, pellet slideway internal diameter is greater than main pellet external diameter, main pellet can move left and right in slideway, there are respectively discharge coil iron core and charge coil iron core in pellet slideway two ends, discharge coil is around described discharge coil iron core outside, and charge coil is around described charge coil iron core outside.Described stand-by circuit plate is connected with control module with discharge signal line by charging signals line, and pellet contact interface A and pellet contact interface B and described control module are connected.

Described charge coil is connected with stand-by circuit plate with charge coil interface B by charge coil interface A, and described discharge coil is connected with stand-by circuit plate with discharge coil interface B by discharge coil interface A, and storage capacitor is positioned on stand-by circuit plate.

Electronic lock starts initialized time, described control module can send two low level signals to stand-by circuit plate by charging signals line and discharge signal line, now described stand-by circuit plate discharges to storage capacitor by discharge coil, in the time of electric current process discharge coil, discharge coil and discharge coil iron core produce magnetic field, main pellet is attracted to discharge coil iron core one side, now main pellet is all positioned at mechanical lock core, as long as there is correct key to enter mechanical key hole, make all lower pellets and upper pellet be positioned at correct position, mechanical lock core is rotatable unblanking, this process is that spare module is enabled process, spare module is in initiate mode afterwards.

If there is fault in electronic lock, cannot complete initialization operation, main pellet will rest in lock core, allow user to use mechanical key to open the door, and ensure that door lock can normally be opened.

When electronic lock initialization completes, described control module can send two high level signals to stand-by circuit plate by enabling holding wire and discharge signal line, now described stand-by circuit plate charges to storage capacitor by charge coil, in the time of electric current process charge coil, charge coil and charge coil iron core produce magnetic field, main pellet is attracted to charge coil iron core one side, now main pellet one end is positioned at mechanical lock cylindrical shell, one end is positioned at mechanical lock core, no matter whether have key to enter, mechanical lock core all cannot rotate and unblank, electronic lock can only be opened by normal electronically, ensure fail safe.When described storage capacitor voltage meets the demands, automatically stop charging, now control module charging signals line output low level, discharge signal line output high level, disconnect charging circuit and discharge circuit, electronic lock normally moves, the no longer power consumption of stand-by circuit plate, this process is spare module closing process, and spare module is in stand-by state afterwards.

Described pellet contact is gluing on mechanical lock cylindrical shell, when on nearest first of mechanical key hole exits, pellet moves up, there is key to enter mechanical key hole, pellet contact will be touched, pellet contact is in off-state at ordinary times, pellet contact is touched, pellet contact interface A and pellet contact interface B short circuit.In the time that electronic lock is normally worked, pellet contact is touched, and is judged as someone and attempts unblanking by spare module, now, no matter whether key is correct, due to the effect of main pellet, all cannot completes and unblank, and send alarm sound and remind.

Described input module is for accepting the information of unblanking of user's input, its selection has multiple, can be fingerprint scanning circuit for obtaining user fingerprints, can be that numeric keypad is for allowing user input password, can be IC-card sensor circuit, for responding to user's IC-card.

When input module gets user's the information of unblanking, control module will judge it, if the information of unblanking is correct, control driver module, carry out opening door operation.

There is hardware watchdog control module inside, when control module crashes, can not complete dog feeding operation time on time, house dog will send reset signal to control module, its reset is reinitialized, and as described above enable spare module, when control module initialization completes, spare module enters stand-by state, and guarantee equipment normally moves.

Selftest module is for detection of input module and driver module state, when selftest module detects input module or driver module fault and by communication during to control module, control module will send low level to stand-by circuit plate by discharge signal line, start spare module start-up course, allow user to use mechanical key to open the door by spare module.

Electric power source pair of module provides stable power supply for electronic lock, system is normally worked, when electronic lock causes running down of battery because user does not change battery in time, system power failure, the level step-down of discharge signal line, starts spare module start-up course, automatically by the electric power storage in storage capacitor, enable spare module, allow user to use mechanical key to open the door by spare module.

Power module, driver module and input module are having ripe ready-made module on the market, and these have all ensured the feasibility of the utility model execution mode.

The utility model has increased spare module on the basis of existing electronic lock, when the normal startup of electronic lock, storage capacitor is carried out to disposable charging, spare module enters stand-by state afterwards, can not carry out extra power consumption, if now use mechanical key, not only can not unblank, also can trigger alarm; When electronic lock breaks down or power supply exhausts, spare module discharges the energy in storage capacitor, enables spare module, and now user can open the door by mechanical key, ensures that gate control system can normally work.

Brief description of the drawings

Fig. 1 is system configuration schematic diagram of the present utility model.

Fig. 2 is the circuit diagram of spare module in the utility model.

Fig. 3 is the cutaway view of mechanical lock core in the utility model.

Fig. 4 be in the utility model Fig. 3 along the cutaway view of A-A.

In figure: 1-input module, 2-control module, 3-driver module, 4-power module, 5-selftest module, 6-spare module, 7-mechanical lock cylindrical shell, the main pellet of 8-, 9-mechanical lock core, 10-mechanical lock keyhole, pellet under 11-, 12-pellet contact, 13-pellet contact interface A, 14-pellet contact interface B, the upper pellet of 15-, 16-marble spring, 17-charge coil interface A, 18-charge coil interface B, 19-charge coil iron core, 20-charge coil, 21-pellet slideway, 22-discharge coil, 23-discharge coil iron core, 24-discharge coil interface A, 25-discharge coil interface B, 26-stand-by circuit plate, 27-storage capacitor, 28-charging signals line, 29-discharge signal line.

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described further.

As shown in Figure 1, the utility model is made up of input module 1, control module 2, driver module 3, power module 4, selftest module 5, spare module 6.Input module 1 is numeric keypad, be used for allowing user input password, drive circuit 3 is for accepting the instruction of control module 2, complete unlock operation, the modules that power module 4 is whole electronic lock system provides stable power supply, and selftest module 5 is for detection of the running status of driver module 3, when control module 2 is sent unlock instruction, and when driver module 3 attonity, break down to control module 2 reponse systems.

As shown in Figure 2, work as system reset, start initialization, the system that detects selftest module 5 breaks down or power supply exhausts, supply module 4 cannot provide power supply to be, charging signals line 28 and discharge signal line 29 output low levels, now discharging circuit conduction, charging circuit disconnects, storage capacitor 27 discharges by discharge coil 22, in the time of electric current process discharge coil 22, discharge coil 22 and discharge coil iron core 23 produce magnetic field, main pellet 8 is drawn onto to discharge coil iron core 23 1 sides, now main pellet 8 is arranged in mechanical lock core 9, as long as there is correct key to enter mechanical key hole 10, make all lower pellets 11 and upper pellet 15 be positioned at correct position, mechanical lock core i.e. 9 rotatable unblanking.

When system initialization completes, when electronic lock starts normally to work, charging signals line 28 and discharge signal line 29 are exported high level, now discharge circuit disconnects, charging circuit conducting, storage capacitor charges by charge coil 20, when electric current process charge coil 20, charge coil 20 and charge coil iron core 19 produce magnetic field, main pellet 8 is attracted to charge coil 19 1 sides, now main pellet 8 one end are arranged in mechanical lock core 9, one end is arranged in mechanical lock simplified 7, no matter whether have key to enter, mechanical lock core 9 all cannot rotate and unblank, electronic lock can only be inputted correct password by input module 1 and open, ensure fail safe.When the voltage of storage capacitor 27 acquires a certain degree, charging circuit disconnects, now charging signals line 28 output low levels, and spare module enters stable state, does not produce power consumption.

As shown in Figure 3, there is a pellet contact 12 nearest upper pellet 15 tops of the tool keyhole 10 of disembarking, pellet contact 12 is connected with control module 2 with pellet contact interface B14 by pellet contact interface A13, this pellet contact 12 is normal for disconnecting, when there being key to enter mechanical key hole 10, on lower pellet 11 and upper pellet 15, move, touch pellet contact 12, now pellet contact 12 closures, in the time that electronic lock is normally worked, pellet contact 12 is touched, be judged as someone and attempt to unblank by spare module, electronic lock will send alarm sound.

As shown in Figure 4, main pellet 8 is arranged in the pellet slideway 21 that mechanical lock core 9 and mechanical lock cylindrical shell 7 form, and the external diameter of main pellet 8 is less than the internal diameter of pellet slideway 21, and main pellet 8 can horizontally slip.In the time that electronic lock is normally worked, main pellet 8 is positioned at charge coil iron core 19 1 sides, and now mechanical lock core 9, because the obstruction of main pellet 8 cannot be rotated, also cannot be unblanked even if insert correct mechanical key, ensures the fail safe of electronic lock.

When electronic lock system abnormal, when electronic lock part cannot normally be unblanked, main pellet 8 is positioned at discharge coil 23 1 sides, now main pellet 8 is positioned at mechanical lock core 9 completely, can not hinder mechanical lock core rotation, as long as the mechanical key inserting is correct, make all lower pellets 11 and upper pellet 15 be positioned at correct position, can unblank, ensure the reliability of electronic lock.

Claims (3)

1. the electronic lock with back-up system, is characterized in that: by input module, control module, driver module, power module, selftest module and spare module; Wherein spare module comprises mechanical lock cylindrical shell, main pellet, mechanical lock core, mechanical lock keyhole, lower pellet, pellet contact, pellet contact interface A, pellet contact interface B, upper pellet, marble spring, charge coil interface A, charge coil interface B, charge coil iron core, charge coil, pellet slideway, discharge coil, discharge coil iron core, discharge coil interface A, discharge coil interface B, stand-by circuit plate, storage capacitor, charging signals line and discharge signal line; Described main pellet is arranged in described pellet slideway, described pellet slideway internal diameter is greater than described main pellet external diameter, described main pellet can move left and right in described pellet slideway, there are respectively discharge coil iron core and charge coil iron core in described pellet slideway two ends, discharge coil is around described discharge coil iron core outside, and charge coil is around described charge coil iron core outside; Described stand-by circuit plate is connected with discharge signal line and control module by charging signals line, and pellet contact interface A is connected with described control module with pellet contact interface B.

2. the electronic lock with back-up system according to claim 1, it is characterized in that: described charge coil is connected with charge coil interface B and stand-by circuit plate by charge coil interface A, described discharge coil is connected with discharge coil interface B and stand-by circuit plate by discharge coil interface A, and storage capacitor is positioned on stand-by circuit plate.

3. the electronic lock with back-up system according to claim 1, it is characterized in that: described pellet contact is gluing on described mechanical lock cylindrical shell, when on nearest first of the described mechanical key hole exits of distance, pellet moves up, there is key to enter described mechanical key hole, described pellet contact will be touched, pellet contact is in off-state at ordinary times, when described pellet contact is touched, and pellet contact interface A and pellet contact interface B short circuit.