RU2353741C2 - Electronic-mechanical lock - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention is related to equipment that prevents unauthorised access to protected object. Lock comprising blocking device installed in body of its locking part, identifier, pocket portable electronic key, programmable memorising device, is additionally equipped with transponder system, system of contact memory and movable gate installed in front of lock mechanism keyway and connected to actuator. Induction coil is fixed at keyway, which is connected to transponder controller. Inside mechanical lock key, induction coil is located, which is connected to transponder chip, as well as contact memory chip connected to contacts on key. Response contacts are placed inside lock, which are connected to contact memory controller. Controller of transponder and controller of contact memory are connected to lock controller, outputs of which are connected to inlet of current amplifier connected to gate actuator, and to inlet of current amplifier connected to lock blocking device actuator.

EFFECT: increased level of protected objects protection against unauthorised break of lock.

1 dwg

Description

The invention relates to techniques for preventing unauthorized access to a guarded object.

A known lock containing a comparison device, a switch, random access memory, a digital noise generator, a decoder, logic elements, a waiting multivibrator, a shaper of reset signals, a switch of operating modes (RF patent No. 2117745 Е05В 47/06).

The disadvantage of this device is the transmission of a code using an infrared beam, which makes it possible to remotely intercept and decrypt the code and the subsequent unauthorized opening of the lock by a person who does not have access to the guarded object.

Closest to the proposed technical solution is the lock described in the patent of the Russian Federation No. 2138609 EV 47/06 and adopted by us as a prototype. The prototype includes a locking device located in the housing of the locking part of the lock, an identifier, a handheld portable electronic key, a programmable memory device.

The main disadvantage of the prototype is the lack of the necessary degree of protection against unauthorized breaking of the castle.

The objective of the invention is to increase the level of protection of protected objects from unauthorized hacking.

The technical result is achieved by the fact that a known lock containing a locking device located in the housing of its locking part, an identifier, a handheld portable electronic key, a programmable memory device is additionally equipped with a transponder system, a contact memory system and a movable shutter located in front of the lock mechanism well and connected with an actuator, an induction coil fixed to the keyhole connected to the transponder controller is mechanically inside the key The lock contains an induction coil connected to the transponder chip, and the contact memory chip connected to the contacts on the key, there are response contacts inside the lock connected to the contact memory controller, while the transponder controller and contact memory controller are connected to the lock controller, the outputs of which are connected to the input of the current amplifier connected to the actuator of the damper, and the input of the current amplifier connected to the actuator of the lock.

The block diagram of the electronic mechanical lock is shown in the drawing

The proposed lock contains a key of a traditional mechanical lock, into which a chip 1 and an induction coil of a transponder 2 are integrated, as well as a chip 3 and contacts 4 of a contact memory, for example, of the TOUCH MEMORY type, there is a shutter in front of the mechanical lock well connected to the shutter actuator 5 , in front of the shutter inside the door there is a transponder read induction coil 6 connected to the transponder 7 controller, and inside the lock there are contacts 8 connected to the contact memory controller block 9, control units The transponder 7 and contact memory 9 are connected to the lock controller 10, the outputs of which through amplifiers 11 and 12 are connected to the actuators of the shutter 5 and the lock 13, controlling the shutter 14 and the lock 15, respectively. The lock is powered by a power source 16.

The castle operates as follows. When the key is inserted into the door well, the key rests against the shutter 14, which closes access to the lock well, and the transponder coil on the key 2 is in the field of action of the lock transponder coil 6 and the read key transponder number, decoded by the transponder controller 7, is transmitted to the controller 10, where the programmable storage device stores a registry of key codes giving access to the protected object. If the transponder code of this key is recorded in the approved register, then current is supplied to the actuator of the shutter 5, the shutter is opened, after which the key is inserted into the lock until it stops, the contacts of the key 4 are connected to the contacts of the lock 8, and the code is read from the contact memory, decrypted by the contact memory controller, it is transferred to the lock controller 10. If the contact memory code of this key is recorded in the approved register, a current pulse is applied to the locking device of the lock 13 for a time sufficient to open I'm a traditional mechanical key lock. After the specified time has passed, the lock is locked again.

The proposed device provides significantly greater resistance to cracking. This is ensured by the fact that the castle proposed by the authors has three lines of defense that must be successively overcome by a potential cracker. Moreover, since the transponder coil 6 is located inside the door, and the key coil 2 is horizontal, its field practically does not go outside the door and the key transponder code cannot be read from the outside, especially since the coils are close to each other and the current (and therefore and the field of coils) will be weak. It is impossible to read the contact memory code remotely, since this requires an electrical contact. An additional difficulty in breaking is the fact that it takes several seconds to open the mechanical part of the lock (key rotation), after which the lock is blocked.

Obviously, if at least one of the codes does not match the codes recorded in the registry, the lock will not be unlocked, in this case an alarm will be issued.

Claims (1)

An electronic-mechanical lock containing a locking device located in the housing of its locking part, an identifier, a pocket portable electronic key, a programmable memory device, characterized in that it is additionally equipped with a transponder system, a contact memory system and a movable shutter located in front of the lock mechanism well and connected to the actuator, an induction coil is fixed at the keyhole connected to the transponder controller, inside the key of the mechanical There is an induction coil connected to the transponder chip and a contact memory chip connected to the contacts on the key; inside the lock there are response contacts connected to the contact memory controller, while the transponder controller and the contact memory controller are connected to the lock controller, the outputs of which are connected to the input of the current amplifier connected to the actuator of the damper, and the input of the current amplifier connected to the actuator of the lock.