RU2318968C1 - Device for access code input in executive mechanism controller of lock - Google Patents

Abstract

FIELD: devices to protect different objects against intrusion.

SUBSTANCE: access code input device comprises magnetic key and reading unit. Magnetic key is made as non-magnetic plate provided with constant magnets. The reading unit includes at least two magnetosensitive sensors connected to non-magnetic base so that they may cooperate with magnetic field of magnetic key. Device has executive mechanism controller electrically connected with each magnetosensitive sensor and providing access code by serial code symbols input. Magnetic key may move over free surface of non-magnetic base facing outer door side. Said surface has hairline. Outer side of magnetic key has hairlines and/or identifying marks.

EFFECT: increased lock secrecy and elimination of unauthorized code input.

2 cl, 3 dwg

Description

The invention relates to locking devices, specifically to electronic combination door locks with alarm, and can be used to protect various objects from unauthorized persons.

A device for entering an access code into an actuator of a lock, including means for inputting a control signal, a controller of an actuator of a door lock (DE 3606620 A1, 09/03/1987). As a means of inputting a control signal, a code key is used, made in the form of an electronic card, and the controller is equipped with a slot for placing a code key in it. Depending on the orientation of the key, the information read from it by the reader determines the direction of rotation of the electric motor, which through the rack and pinion moves the lock bolt into the locking strip or returns it to its original position.

The disadvantages of this device are the low reliability of the design of the lock due to the possibility of damage to the transmission mechanism and the opening of the lock after the application of force to the end surface of the crossbar; the possibility of overloading or damaging the engine and the locking mechanism during the extension of the bolt when the door is not fully closed or if there is a foreign object in the locking strip; the possibility of unauthorized access (unauthorized opening of the lock) when the key is stolen.

It is also known a device for entering an access code into the actuator of the lock, including a magnetic key made in the form of a plate equipped with permanent magnets, and a reading unit connected to the controller of the actuator of the door lock, made in the form of magnetosensitive sensors installed with the possibility of their field interaction with the magnetic field of the magnetic key (RU 2027836 C1, 01/27/1995).

This device is not vandal resistant, in addition, if a key is stolen, it allows unauthorized access (unauthorized opening of the lock).

The closest analogue of the claimed invention is a device for entering an access code into the door lock actuator, including a magnetic key made in the form of a plate of non-magnetic material equipped with permanent magnets, and a reading unit made of at least two magnetosensitive sensors fixed on non-magnetic substrate with the possibility of their field interaction with the magnetic field of the magnetic key (SU 596707 A1, 02/13/1978).

However, this device is not reliable enough and does not have the necessary degree of secrecy.

The task to which the stated solution is directed is expressed in increasing the security of the lock while excluding the possibility of unauthorized entry of the access code by third parties who possessed the code key.

The technical result, which is manifested in the solution of the problem, is expressed in increasing the reliability of the lock, burglar resistance and vandal resistance of the device for entering the access code, simplifying its design, as well as improving the ease of use.

The specified technical result is achieved in that the device for entering the access code into the actuator of the door lock, comprising a magnetic key made in the form of a plate of non-magnetic material equipped with permanent magnets, and a reading unit made of at least two magnetically sensitive sensors fixed on a non-magnetic substrate with the possibility of their field interaction with the magnetic field of a magnetic key, according to the invention is equipped with a lock actuator controller, an electric which are connected with each magnetically sensitive sensor and enable the access code to be generated by sequential input of its elements, and the magnetic key is made with the ability to move above the door facing the outside of the free plane of the non-magnetic substrate, and this plane is risky, and the outside of the magnetic key has risks and / or identifying tags.

The magnetic key is made in the form of a plastic disk equipped with a cylindrical protrusion coaxial with its center and arranged to rotate in a cylindrical recess made on the outside of the substrate, while the magnetically sensitive sensors are placed at equal distances from each other on an arc of a circle coaxial with the cylindrical notch.

These features of the invention represent its differences from the prototype and determine the novelty of the proposal; these differences are significant, because they provide the achievement of the technical result reflected in the technical task, and are absent in the known technical solutions with the same effect.

A comparative analysis of the set of essential features of the proposed technical solution with the essential features of analogues and prototype indicates its compliance with the criterion of "novelty."

The features of the characterizing part of the claims solve the following functional tasks.

The signs "the reading unit is made in the form of a sensor field formed by at least two magnetosensitive sensors fixed on a non-magnetic substrate" provide the possibility of forming a flattened spatial structure (sensitive to a magnetic field, the sensitivity parameters of which on the area of the sensor field are a variable value), which when a magnetic field of commensurable size is introduced into interaction with the touch field, occupying only a part of the area of the touch field, it allows converting certain positions (certain positioning) of the magnetic key into input control signals, the sequence of which is an access code, while the key (switch) does not contain any code information, and therefore access to it does not provide the possibility of unauthorized opening of the lock.

The signs “the free plane of the substrate is facing the outside of the door” provide the ability to move the magnetic key parallel to the magnetically sensitive sensors, which ensures the constant interaction of the magnetic field of the key and the sensors, which increases the uniqueness of the perception of the read signals and the reliability of the device, as well as the presence of risks that provide character read accuracy, i.e. the accuracy of positioning the key in the position corresponding to any control signal from those displayed on the magnetic key.

The signs "the magnetic key is made of non-magnetic material in the form of a plate equipped with permanent magnets and is mounted with the ability to move above the free plane of the non-magnetic substrate" provide the possibility of forming a magnetic field commensurate with the size of the sensitive area of the sensor field, and transform the various positions of the key in space into control signals from displayed on a magnetic key.

The signs "a cylindrical recess is made in the substrate, and the side of the magnetic key facing it is provided with a cylindrical protrusion" simplify the implementation of the mobility requirement of the magnetic key with respect to the sensor field.

The signs "the external side of the magnetic key is equipped with risks and / or identifying marks" allow (together with the risk formed on the substrate) to transform various positions of the key in space into control signals from those displayed on the magnetic key and simplify entering the access code.

Figure 1 shows a top view of the reading node; figure 2 shows a top view of the code key; figure 3 shows a section of the reading node.

The drawings show the reader assembly of the door lock controller 1, made in the form of a sensor field formed by at least two magnetically sensitive sensors 2 (optimally six), fixed on one side of the non-magnetic substrate 3, the free plane 4 of which is facing the outer side 5 of the entrance door 6 equipped with zero risk 7 and a cylindrical recess 8, while the magnetic key is made of non-magnetic material in the form of a plate 9 (preferably a plastic disk), equipped with magnetic inserts 10 and a cylinder eskim projection 11 (concentric with the center of the disk), moreover, the outer surface of the magnetic key (plate 9) is provided with a risk identifying marks 12 and 13. The disc is entirely conventional (UniKey technology), so that the criminals can not open the lock, obtaining access to the key. The key does not contain a single chip or power source (ZeroChip technology), which means that installing a bug in the key is not possible. If the disc is lost, the new key can be easily bought at the store, like any standard product. This allows you to store the disk in any convenient place.

The reading unit contains a substrate of non-magnetic material (copper, bronze, titanium, non-magnetic steel, plastic), under which there is a board with magnetic sensors. It is advisable that there be six magnetically sensitive sensors, they are placed at equal distances from each other on an arc of a circle coaxially with a cylindrical recess, while zero risk 7 is an arbitrary feature (radial relative to the center of the cylindrical recess) on the reader surface facing the outer surface of the door. It can be placed on one of the straight lines from the center of the cylindrical recess through any of the six magnetically sensitive sensors.

An electromechanical lock of any known type can be used as a door lock (the electric motor or an electromagnet is used as an actuator for its actuator — not shown in the drawings).

As the controller 1 can be used an electronic unit, preferably a microcontroller (for example, Microchip 16 F 684), which functionally includes elements that provide solutions to the following problems:

- input and storage of non-volatile access code;

- conversion of the input signal introduced by the orientation of the magnetic key relative to the zero risk 7 (respectively, positioning in the zero-risk alignment 7 of one of the figs 12 provided with identification marks 13 to be selected) into a signal that is part of the input (generated) access code;

- the formation of a code sequence from signals sequentially introduced by sequential positioning of the identification marks 13;

- Comparison of the access code stored in the controller memory and generated;

- the formation of the control signal of the actuator (respectively, its opening or closing).

The named functions are implemented mainly by software. In addition to these functions directly related to ensuring the operation of the lock, the controller 1 can provide a signal about an incorrectly dialed code and / or activate a security alarm or perform another action provided for in the list of options selected when purchasing a lock.

As identification marks 13, digital (Arabic and / or Roman) and / or alphabetic signals (based on various alphabets), as well as pictograms and the like, which are applied along the periphery of the disk, can be used; it is advisable that the risks 12 go directly to the external perimeter of the disk, and the identification marks 13 are located on the opposite side of the pictures 12, which increases the accuracy of positioning of the input marks 13 with zero risk 7.

As magnetosensitive sensors 2, sensors of known design are used that satisfy the required operating parameters in their characteristics.

The claimed device operates as follows.

A reading unit is mounted in the door leaf (or on the wall near the door), the outputs of which are connected in a known manner to the controller of the door lock actuator (ensuring the inaccessibility of communication channels from the outside of the door).

The user approaches the door and inserts the cylindrical protrusion 11 of the magnetic key into the cylindrical recess 8 on the reader (the magnetic key may be in an arbitrary position with respect to zero risk 7) and rotates the disk until the desired character on the disk matches and zero risk 7, but not less three divisions (disk positions) in one direction. You can make several revolutions around its axis or "return". After the disk is installed correctly, it must be stationary for at least two seconds (the symbol is fixed). After that, the controller provides a single beep if the symbol is successfully fixed. In case of any error - a three-fold signal. If the disc is stationary for less than 2 seconds, the symbol will not be fixed (no signal). If an error occurs, enter the character again. After the controller confirms the correct character entry, enter and lock the next character. After entering several (for example, five) characters (the number is fixed), controller 1 comes into operation, which, after comparing the dialed code sequence with the access code stored in its memory, or gives a command to perform the corresponding operation to the lock (if the code sequence corresponds to the access code) , either gives a signal about an incorrectly dialed code and / or turns on a burglar alarm or performs another action provided by the functions of the lock. If you enter an erroneous character, stop the magnetic key (disk) in an arbitrary position (or remove it) and wait 10 seconds until the controller is reset.

To enter two identical characters in a row, turn the magnetic key at least two characters in any direction and return to the previous position.

If there is no magnetic key (or its immobility) for more than 10 seconds, the controller resets the incomplete code entry and enters the energy saving mode (falls asleep).

The default (factory) access code is "1 3 5 7 9".

The main advantages of the device: low visibility of the installation - on the door there is only a small blind hole for the axis and "zero risk"; the absence of any through holes or mechanical connection between the disk and the lock mechanism; the reader can be installed in an arbitrary place on the door (safe); inability to open the lock "by ear" or in another similar way - a digital magnetic interface is used; the absence of any signal that can be intercepted or eavesdropped - the magnetic field disappears already 2-3 centimeters from the disk and is stable; the magnetic key is removable (pocket) and is carried away with it, which makes the lock completely invulnerable to vandals; the use of the classic disk design of the code panel excludes the possibility of such a hacking method as marking buttons, and it is very difficult to pry access code. A removable design eliminates the possibility of such a hacking method as the use of scratching "recorders" installed "under the disk."

Among the shortcomings, a high opening time of about 13 seconds should be noted. In addition, these devices cannot be recommended for persons with serious impaired coordination of movements.

The above embodiment of the present invention allows for various modifications and additions that are obvious to experts in the field to which this invention relates. That is, the present invention in no way can be limited to this description of the proposed device and it may be amended and supplemented by the claims.

Claims (2)

1. A device for entering an access code into the actuator of a door lock, comprising a magnetic key made in the form of a plate of non-magnetic material equipped with permanent magnets, and a reading unit made of at least two magnetosensitive sensors fixed on a non-magnetic substrate with the possibility their field interaction with the magnetic field of the magnetic key, characterized in that it is equipped with a lock actuator controller, electrically connected to each of the magnetically sensitive sensors and providing the formation of the access code by sequential input of its elements, and the magnetic key is made with the ability to move over the outside of the door facing the free plane of the non-magnetic substrate, and this plane is risky, and the outer side of the magnetic key has risks and / or identifying marks. 2. The device according to claim 1, characterized in that the magnetic key is made in the form of a plastic disk equipped with a cylindrical protrusion coaxial with its center, arranged for placement and rotation in a cylindrical recess made on the outside of the substrate, while the magnetically sensitive sensors are placed on equal distances from each other on an arc of a circle coaxial with a cylindrical recess.

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