RU2015559C1 - Coder - Google Patents

Abstract

FIELD: computer technology; automatics. SUBSTANCE: coder has read-out unit 1 with read-out coils 2 (single at least) and magnetic system 4, formed by permanent magnets (single at least). It also has card 5, formed by two non-ferrous plates. Magnetic elements 6, made in form of cuts of the wire, are treated especially and have preset lengths. The magnetic elements are disposed in preset sequence between the plates in one or more rows in parallel one to another in any row. Coils 2 embrace channel for inputting card in unit 1, they are disposed at angle to longitudinal axes of magnetic elements. Coder may be used for storage and reading-out of data in guard systems, coded locks. EFFECT: improved sensitivity; improved reliability; increased volume of information to be coded. 3 dwg

Description

 The invention relates to computer technology and can be used to create unified devices for storing and reading information for locks with electromagnetic control, alarm systems, etc.

 A device for encoding is known, comprising a code key of non-magnetic material with encoding elements located therein, read coils mounted on the device body, the windings of which are connected to the decoding unit of the actuator, a reference key, reference key fixing springs and permanent magnets.

 The disadvantages of the known device are the design complexity, the presence of mechanical springs, reducing its reliability, and low secrecy.

 The closest to the invention in technical essence and the achieved result is an encoded card and a reader, an encoded card contains short pieces of specially treated wire. Each of these pieces of wire generates an electrical pulse in the read coil when the card is inserted (inserted) into the reader. Pulses can have different polarity depending on the orientation of the wire in the card.

 The reading device consists of a fixing socket, on the external side of which two permanent magnets are mounted, and on the external side there are two reading coils, inside of which are placed iron cores, which are magnetic field concentrators.

 The disadvantage of this device is the increased complexity of the design, low sensitivity and a low degree of secrecy due to the passage from the outside of the read coils.

 The invention is directed to the creation of an encoding device with increased sensitivity to reading and secrecy (increased amount of encoded information).

 The invention is illustrated by drawings, where in FIG. 1, 2, 3, various possible embodiments of a reader unit and a card are shown.

 The reading unit 1 comprises reading coils 2 (one or more) wound on the housing of the unit 1 in the grooves 3, and a magnetic system 4 of one or more permanent magnets. Inside the block 1, a channel for inputting a card 5 with magnetic elements 6 is made in the form of pieces of wire of different lengths arranged in rows parallel to each other in each row between two non-magnetic plates, which may be opaque.

 Permanent magnets of the magnetic system 4 can be placed both on one side of the block 1, and on both sides of it, while these permanent magnets are located so that the corresponding magnetic elements 6 of different rows when the card 5 is inserted into the channel pass by the permanent magnets simultaneously (Fig. . 2, 3). The read coils 2 and magnetic elements 6 are located when the card 5 is inserted into the channel at an angle to each other, while the different coils 2 can be crossed among themselves (Fig. 2), and their centers can be offset relative to each other as in the direction of movement of the card 5 across and across.

 The wire from which the magnetic elements 6 are made is specially processed to ensure a jump-like nature of magnetization reversal.

 The device operates as follows.

 Card 5 is made in advance and serves as an identifier (key) to ensure the operation of any device. One of the rows of magnetic elements 6 can be synchronizing (the left row in Fig. 2, 3), and the other is informational, or the rows can be combined (Fig. 1). With the introduction of the card 5 into block 1, the magnetic elements 6, passing by the permanent magnets of the magnetic system 4, are magnetized. The resulting changes in the magnetic flux are perceived by the coils 2, which due to their location around the card 5 at an angle to the elements 6 provide maximum sensitivity to this change, because fully cover them at the time of magnetization reversal. This eliminates the need for fine tuning of the magnetic system, as well as in a magnetic field concentrator.

 In FIG. 2 shows the preferred arrangement of coded information for the arrangement of magnetic elements 6 in card 5 due to differences in the number of pulses, their amplitude, polarity and repetition rate. The latter can be compared both with a unit of time and with a synchronization frequency (left row of elements 6). So, in the case of a two-track card 5 with twenty synchronizing elements 6, the amount of encoded information is 2-20 bits.

 Each coil 2 of the circuit of FIG. 2 can be switched on independently, or the coils can be connected in series to increase the amplitude of the read pulse. The pulse read by each of the coils can have a different polarity, which makes it possible to distinguish between elements of different tracks or elements of different lengths on one track.

Claims (1)

 A CODING DEVICE containing a card with magnetic elements in the form of at least one row of pieces of wire of a given length located between two non-magnetic plates in a given sequence parallel to each other, and a reading unit, on the housing of which a magnetic system of at least one permanent magnet is mounted and at least one read coil, a channel for card input is made inside the read block, permanent magnets of the magnetic system are placed above the magnetic elements of points when it is inserted into the channel, characterized in that the read coils enclose the channel for card input and are located at an angle to the direction of the longitudinal axis of the magnetic elements in the cards when it is inserted into the channel.

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