RU2321714C1 - Device to input access code into executive lock mechanism controller - Google Patents

Abstract

FIELD: protection of different objects against intrusion.

SUBSTANCE: device comprises reading unit linked to executive mechanism controller and including magnetosensitive sensors. The sensors are secured to one side of non-magnetic substrate. Coded key is made as ferromagnetic disc having through orifices. The orifices are formed so that orifice centers are on lines radially shifted from disc center. Number of orifices lying on one radial line is from 1 to number equal to number of magnetosensitive sensors. Disc is installed so that it may rotate over substrate about axis transversal to disc center. Line of magnetosensitive sensor installation is radially extending from disc center. Non-magnetic plate is secured to free surface of non-magnetic substrate and spaced a distance therefrom to provide free disc rotation. The plate carries constant magnets. Number of constant magnets is equal to number of magnetosensitive sensors. Centers of magnetosensitive sensors, constant magnets and disc orifices are aligned with each other. Substrate has hairline. Outer disc surface also has hairlines and/or identifying marks. The non-magnetic plate may be made as pocket with outlet slot corresponding to disc dimensions. Bottom is defined by arch-shaped plate having curvature radius corresponding to arc radius of disc circle.

EFFECT: increased lock secrecy, elimination of code inputs by unauthorized person possessing lock key.

4 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 the controller of the actuator of the lock, including means for inputting a control signal, the controller of the actuator of the door lock (see Germany patent N 3606620, ЕВВ 47/00, 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 controller of the actuator of the lock, including a reader connected to the controller of the actuator of the door lock containing magnetically sensitive sensors, and a code key configured to field the magnetic field on the magnetically sensitive sensors (see US Pat. RF № 2027836, CL EV05B 47/00, 1995).

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

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 result is achieved by the fact that the device for entering the access code into the controller of the actuator of the lock, including a reader connected to the controller of the actuator of the door lock, containing magnetically sensitive sensors, and a code key configured to field the magnetic field on the magnetically sensitive sensors, that the reading unit is made in the form of a sensor field, contains at least two magnetosensitive sensors fixed on one side of a non-magnet a substrate, the free plane of which is facing the outer side of the front door, wherein the code key is made in the form of a disk made of a ferromagnet, moreover, through holes are made in the disk, the centers of which lie on lines radial relative to the center of the disk, at least two, and the number of holes on one radial line from one to a number equal to the number of magnetosensitive sensors, in addition, the disk is mounted to rotate above the substrate around an axis perpendicular to the center of the disk, so that the line on which magnetically sensitive sensors are placed, it is radial relative to the center of the disk, while a plate of non-magnetic material is fixed to which the permanent magnets are embedded in the number of magnetically sensitive sensors, the centers of the magnetically sensitive sensors and permanent magnets are aligned, the centers of the holes made on any of the radial lines of the disk are aligned with the corresponding magnetosensitive sensors, cr IU addition, both plane disk covered with a layer of non-magnetic material, wherein the substrate is provided with the notch, and the outer surface of the disc is provided with risks and / or identifying marks. In addition, a plate of non-magnetic material, into which permanent magnets are embedded, is made in the form of a pocket, the entrance slit of which corresponds to the diameter of the disk, and the bottom is formed by an arcuate plate, the radius of curvature of which corresponds to the radius of the circular arc of the disk. In addition, magnetosensitive sensors and permanent magnets are placed on at least two lines radial relative to the center of the disk. In addition, on one side of the disk, coaxially with its center, a protrusion is made, preferably cylindrical.

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.

Signs "... the reading unit is made in the form of a sensor field, contains at least two magnetosensitive sensors fixed on one side of a non-magnetic substrate, the free plane of which is facing the outer side of the front door" and signs "the line on which the magnetosensitive sensors are placed is radial relative to the center of the disk ”provides the possibility of forming a sensor line (sensitive to a magnetic field, the sensitivity parameters of which along the length of the structure is a variable value), which when entering o interaction with a magnetic field of comparable size and occupying part or all of the length of the sensor line provides the ability to convert certain positions (certain positioning) of the code key into input control signals, the sequence of which is the access code, while the layout of the perforation on the disk used for encoding (but not an access code), can only be accessed if the key is destroyed, while if a key is lost, the reading node can be switched over dirovan to another code key, that will exclude the possibility of using the first key code to unauthorized opening of the lock. Moreover, the mention that "... the free plane (of the substrate) is facing the outer side of the front door" provides 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 unambiguity of perception of the read signals and the reliability of the device’s response, as well as the presence of risks that ensure the accuracy of “reading the symbol”, ie, the accuracy of positioning the key in the position corresponding to any directs the signal from the key mapped to the code.

Signs "... the code key is made in the form of a disk made of a ferromagnet, and through holes are made in the disk, the centers of which lie on lines radial relative to the center of the disk" and the signs "the centers of magnetosensitive sensors and permanent magnets are aligned, while the centers of the holes made on any of the radial lines of the disk, coaxial with the corresponding magnetosensitive sensors ", provide the ability to" trigger "the sensors when there is a hole in the disk between them and the permanent magnets, which, in turn, both ensures, possibility of deliberate control operation magnetosensitive sensor and allows various key positions in space transform into control signals corresponding to the symbols displayed on the key code.

An indication of the number of radial lines (at least two) and the number of holes on one radial line (from one to a number equal to the number of magnetosensitive sensors) ensures the cryptographic stability of the device.

The signs "... in addition, the disk is mounted to rotate above the substrate around an axis perpendicular to the center of the disk" simplify the implementation of the mobility requirement of the code key with respect to the touch line.

The signs "... parallel to the free plane of the non-magnetic substrate with a gap that ensures the placement and rotation of the disk, a plate of non-magnetic material is fixed, in which permanent magnets are sealed by the number of magnetically sensitive sensors" provide the formation of a magnetic field acting on the sensors, and the possibility of changing its parameters when disk rotation.

The signs "... the centers of the magnetosensitive sensors and permanent magnets are aligned, while the centers of the holes made on any of the radial lines of the disc are aligned with the corresponding magnetosensitive sensors" ensure reliable operation of the reader and its unique response.

The signs "... both planes of the disk are covered with a layer of non-magnetic material" exclude the possibility of decoding the layout of the perforation on the disk without destroying the code key (disk)

The signs "... the substrate is risky, and the outer surface of the disk is risky and / or identifying marks" allow you to transform various key positions in space into control signals corresponding to the characters displayed on the code key, and simplify entering the access code.

The features of the second claim specify the design of the pocket, ensuring the operation of the code key.

The signs of the third paragraph of the formula can improve the cryptographic stability of the device.

The signs of the fourth paragraph of the formula simplify the procedure for rotating the disk.

Thus, the idea implemented by the claimed device is as follows: a permanent magnet is placed opposite each sensor so that, in the absence of obstacles, the sensor is in a “triggered” state (the magnetic field has a sufficient level of tension). The obstacle is a magnetic steel disk with perforations (holes) located along the radii.

The disc is inserted into a hollow pocket in which it can rotate freely. If the metal of the disk is located between the magnet and the sensor, then the magnetic field near the sensor will be insufficient for its operation. For its operation, a coincidence of the position of the sensor and the perforation of the disk is required. Thus, by varying the number of holes of the disk (within the radial line), it is possible to ensure the input of signals that are different from each other.

Figure 1 shows a General view of the reading node; figure 2 - its vertical section; figure 3 shows a General view of the code key (disk).

The drawings show the reader assembly of the door lock controller 1, comprising magnetically sensitive sensors 2 fixed on one side of the substrate 3, a plate 4 provided with permanent magnets 5. Also shown is a code key made in the form of a ferromagnet disk 6 equipped with through holes 7. Holes are placed on lines 8 radial relative to the center 9 of the disk. The number of holes 7 located on one radial line 8 is from one to a number equal to the number of magnetically sensitive sensors 2, while the number of the latter is equal to the number of permanent magnets 5 and should be at least two (optimally three). The number of radial lines 8 should be at least two (optimally - about 15-20).

The substrate 3 and the plate 4 are made of non-magnetic material (copper, bronze, titanium, non-magnetic steel, plastic), while the substrate faces the plate with a free plane (opposite to the one on which the magnetically sensitive sensors 2 are mounted) and makes a gap 10 with it and rotation of the disk 6. From the standpoint of operability of the device, permanent magnets can be placed on the substrate, and sensors on the plate 4, but this option reduces the tamper resistance of the device, because Sensors' communication channels with controller 1 become vulnerable.

Magnetosensitive sensors are placed on a line 11 radial relative to the axis of rotation 12 of the disk (passing through its center 9), while the centers 13 and 14, respectively of the magnetosensitive sensors and permanent magnets, pine each other and the centers 15 of the through holes 7 of the disk (installed in the working position ) From the standpoint of operability of the device, it is sufficient to have one line 11 of magnetically sensitive sensors, but from the standpoint of increasing the cryptographic stability of the device, there can be two or more such lines, while the angular distance between lines 11 should be a multiple of the angular distance between radial lines 8.

Optimally, the plate 4 can be made in the form of a pocket, the entrance slit 16 of which corresponds to the diameter and thickness of the disk 6 (2.5-4.5 mm), and the bottom 17 is formed by an arcuate plate, the radius of curvature of which corresponds to the radius of the circular arc of the disk.

Both planes of the disk and, preferably, its end face are covered with a layer 18 of non-magnetic material (aluminum, plastic, etc.), while the substrate is provided with zero risk 19 (a bar radial relative to the axis of rotation 12 of the disk 6), and the outer surface of the disk is risky 20 and / or identifying marks (symbols, pictograms, numbers, etc.). On the same side of the disk, coaxially with its center, a protrusion 21 is made, preferably cylindrical.

The disk does not contain an access code, so criminals will not be able to open the lock after gaining 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.

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;

- converting the input signal input by orienting the code key with respect to zero risk 19 (respectively, positioning in the zero-risk section 19 of one of the figs 20 provided with an identifying label 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 identification tags corresponding to risks 20;

- 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 an alarm or may perform another action provided for in the list of options selected when purchasing a lock.

As identification marks, digital (Arabic and / or Roman) and / or alphabetic characters (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 risks 20 go directly to the outer perimeter of the disk, and identifying marks were located on the opposite side of the notches, which increases the positioning accuracy with zero risk of 19 marks to be entered).

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

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).

Disks are initially initiated by the access code system in programming mode by reading them and adding them to the list of allowed ones.

The user approaches the door and inserts the disk 6 into the slot 16 of the pocket until it stops in its bottom 17 (the disk 6 may be in an arbitrary position with respect to the zero risk 19) and performs two full turns clockwise. In the process, the controller recognizes the disk and, if it is on the “allowed” list, a single beep will sound, otherwise it will sound three times (“Alien Disk”). Next, the user rotates the disk until the desired character coincides with the risk 20 on the disk and zero risk 19, but no less than three divisions (positions on the disk) 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 character 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, you should stop the disk 6 in an arbitrary position (or remove) and wait 10 seconds until the controller is reset.

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

In the absence of a code key (or its immobility) for more than 10 seconds, the controller resets the incomplete code entry and enters the energy saving mode (falls asleep).

A variant of the device using a digital indicator (not shown in the drawings). In this case, the device operates as follows.

The user approaches the door, inserts the disk 6 into the slot 16 of the pocket until it stops in its bottom 17 (the disk 6 can be in an arbitrary position with respect to the zero risk 19) and makes two full turns clockwise. In the process, the controller recognizes the disk and, if it is on the “allowed” list, a single beep will sound, otherwise it will sound three times (“Alien Disk”).

Next, the user enters the password entry mode. The indicator displays the initial state of the indicator (for example, “A”). When the disk is rotated one division to the right, the indicator state changes to “+2” (if it was “A”, then it became “C”). When turning left, the indicator state changes to “-1” (if it was “D”, then it became “C”).

To fix the selected character, the disk is stopped in the desired position for 2 seconds. The fixation of the symbol is confirmed by a single beep.

Removing the disk from the pocket for 10 seconds or stopping it for 10 seconds leads to the "falling asleep" of the device.

The end of password entry is recognized by fixing a special character, for example “*”, or after entering the last character if the password is fixed (for example, 5 characters).

It is possible to enhance cryptographic strength by analyzing the "sequence" of switching on or off the Hall sensors on the same radius.

The main advantages of the device: the absence of any through holes or mechanical connection of 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 code 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."

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, defined below by the claims.

Claims (4)

1. A device for entering an access code into the controller of the actuator of the lock, comprising a reader node associated with the controller of the actuator of the door lock containing magnetically sensitive sensors, and a code key configured to field the magnetic field on the magnetosensitive sensors, characterized in that the reader node made in the form of a sensor field, contains at least two magnetosensitive sensors fixed on one side of a non-magnetic substrate, a free plane the bone of which is facing the outside of the front door, wherein the code key is made in the form of a disk made of a ferromagnet, moreover, through holes are made in the disk, the centers of which lie on lines radial relative to the center of the disk, at least two, and the number of holes on one radial line from one to a number equal to the number of magnetosensitive sensors, in addition, the disk is mounted to rotate above the substrate around an axis perpendicular to the center of the disk so that the line on which the magnetosensitive sensor, is radial relative to the center of the disk, while a plate of non-magnetic material is fixed in parallel to the free plane of the non-magnetic substrate with a gap providing placement and rotation of the disk, in which the permanent magnets are embedded in the number of magnetically sensitive sensors, and the centers of the magnetically sensitive sensors and permanent magnets are aligned the centers of the holes made on any of the radial lines of the disk are aligned with the corresponding magnetosensitive sensors, in addition, both planes of the disk covered with a layer of non-magnetic material, wherein the substrate is provided with the notch, and the outer surface of the disc is provided with risks and / or identifying marks. 2. The device according to claim 1, characterized in that the plate of non-magnetic material, in which the permanent magnets are embedded, is made in the form of a pocket, the entrance slit of which corresponds to the diameter of the disk, and the bottom is formed by an arcuate plate, the radius of curvature of which corresponds to the radius of the circular arc of the disk. 3. The device according to claim 1, characterized in that the magnetosensitive sensors and permanent magnets are placed on at least two lines radial relative to the center of the disk. 4. The device according to claim 1, characterized in that on one side of the disk, coaxially with its center, a protrusion is made, preferably cylindrical.

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