DE1474466A1 - Galvanomagnetically queryable information carrier with query organ - Google Patents

Description

Erlangen 23. Μ «. WW Aktiengesellschaft Werner-von-Siemens-Str.

PLA ο · '? / 1 149

Dr. Expl.

Gaivanomagnetically queryable information carrier nib query organ

The invention relates to a galvanomagnetically interrogable Information carriers, in particular digit rolls, a counting register, with a cross to the forward movement of the information carrier evacuable query organ.

In the known devices of the same type, the information carrier is to form the information with magnetic characters in Provided in the form of a magnetic lettering. The magnetic Signs consist of small magnetic dipoles that

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speaking of the information to be transmitted. In As a rule, the magnetic dipoles are arranged so that their magnetic axis is perpendicular to the interrogation plane. The magnetic Dipoles can be small magnets or magnetisable wetnesses that are inserted or coated into the information carrier are. The information carrier can, however, also be magnetizable Be foil or be provided with a magnetizable polie. In many cases it is difficult to apply the magnetic lettering in a strength suitable for interrogation To apply information carriers. This is the case, for example, when the magnetic lettering is actually very small Digit roller is to be applied. The magnetic dipoles must therefore be correspondingly small, so that nan is forced to to move the interrogation organ as close as possible to the number roller, since the magnetic field strength with the square of the distance decreases. The well-known mechanical numeric rollers sit with a relatively large amount of play on the counter axes, so dali a small distance of the query organ of the same characters of very different strength are obtained, their subsequent Evaluation is made more difficult.

This disadvantage can be benoben according to the invention, that the information carrier the information as a change ferromagnetic and non-magnetic areas in Fora dec desired Codes, and that the ferromagnetic areas at least . Form part of the magnetic return path in the magnetic circuit of the galvanomagnetic interrogator. That in itself for gaivanomagnetic query required magnetic field can

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now very strong regardless of the size of the information carrier be made because the exciting magnet is no longer on the information carrier, but is arranged in the interrogation body. The source of the magnetic flux can be one or more permanent magnets or electromagnets, which together with the galvanomagnetic element form the scanning element.

The information carrier therefore only forms the inference in the magnetic one Circle. This magnetic yoke is simple in its small size and uncomplicated and therefore also cheap to manufacture. By using larger magnets, the voltage level obtained in this way is considerably higher. That makes you more easily controllable larger air gap possible. The information carrier can easily be used as a stamped or etched ferromagnetic grid in or on a non-magnetic Carriers are run. Eb can also be made of ferromagnetic studs Material are embossed or a magnetic mass is rolled onto a non-magnetic carrier, pressed in, be painted or printed. The pad can be omitted in the case of a self-supporting grid body. The information carrier can be used as Strip, ribbon, disc, card. Roll or tube be executed. The galvanomagnetic element can be a Hall generator as well also be a magnetic field-dependent resistor (e.g. field plate). This results in unipolar designs with field plates and both unipolar and bipolar with Hall generators.

On the basis of the drawing, in which several exemplary embodiments are schematically shown are shown, the invention is explained in more detail.

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Pig. 1 shows a view from above of a toilet of an information carrier 1, softer the information in the form of ferrromagneti-BCher Areas (parts) 2 carries. In the illustrated embodiment the information carrier 1 consists of a non-magnetic material, e.g. plastic, on which ferromagnetic strips 2 are inserted or attached. The carrier 1 can also consist of ferromagnetic material, only then must the ferromagnetic Sign 2 should be raised.

Pig. 2 shows a sectional view according to the line II-II

. Fig 1. The interrogation organ $ consists in this case of a U-shaped permanent magnet 4 corresponding to its magnetic - tion "leads at the ends a north pole N and south pole S on a pole a galvanomagnetisches element 5 is mounted. The power supply lines are denoted by 6. From Fig. 2 it can be seen that the ferromagnetic areas (parts) 2 form the return path part in the magnetic circuit of the interrogator 3. As long as the poles N and S are non-magnetic material or ferromagnetic material faces at a large distance, the magnetic stray flux will be relatively large ", so that the magnetic flux penetrating the field plate 5 is kiem. If the information carrier is moved in the direction of the arrow and the yoke parts 2 come under the poles of the magnet 4, the main flux goes through the field plate 5, which increases its resistance accordingly. The character obtained in this way is shaped with the help of a subsequent pulse former stage. The embodiment shown in FIGS. 1 and 2 has a unipolar effect. '

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In Fig.) And 4 let an inverse embodiment is shown in which the characters are not formed by ferromagnetic material, but by non-magnetic material. The carrier 7 in this P-lie consists of ferromagnetic material and has openings 8 in accordance with the character shape. The magnet system may be the same shape as in the embodiment of FIG. And have 2. The same parts are provided with the same reference numbers. If the pole ends are above an opening 8, the otreufluß will be very large, while when driving over a back 9, the magnetic flux shown in FIG. 4 arises. It is noted that, for the sake of clarity, the air gap is shown very large in all embodiments. The same also applies to the carrier and the interrogation element · The shape of the magnet can also be "horseshoe-shaped" with pointed poins.

FIG. 5 shows a view from above of an information carrier of a bipolar design and FIG. 6 shows a sectional view. Of the Information carrier 10 in turn consists of unraagne ti apparent material, on which a ferromagnetic part in the form of a double character 11 is placed. Fig. 6 shows an interrogator 12, which consists of an E-shaped magnet 15 and a Hallaonde 14. With the specified magnetization, the Hall generator 14 traversed by the drawn magnetic flux when passing over the left part of the character 11. If the query head 12 or the carrier 10 is moved further in the direction of the arrow, the right leg of the magnet 13 is closed by the ferromagnetic return 11 bridged, so that by the Hall generator 14 a Magnetic flux comes about in the opposite direction. The reverberation

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In this case, the generator will emit an approximately sinusoidal output voltage »which can be converted into square-wave pulses by a subsequent Puisforatretufe.

PIg ₁ 7 and 8 show the inverse arrangement. The same parts are provided with the same reference numbers. The carrier 15 consists of ferromagnetiochemical material, which has openings 16 in accordance with the symbols 11 in FIGS. 5 and 6. The magnet system 12 is as stated above. If both legs of the magnet \ t> bridged by ferroraagnetisehen material, the magnetic flux is canceled in the center leg, ie the Hailgenerator is penetrated by no magnetic field. If a pair of legs reaches the openings 1b, the equilibrium of the magnetic bridge is disturbed and a magnetic flux flows in the other leg, as indicated in FIG.

In the exemplary embodiments of FIG. 5 "b _f 7 and 8, two Feidpxatten can be used to Steep Onea Hailgenerators 14 which are then arranged on a respective Außenschenkei DESR magnet 13.

9, 10 and 11 show different embodiments of the Query body. In the exemplary embodiment according to FIG. 9, an Instead of a permanent magnet, an electromagnet 17 is used. At 18 the excitation coil and at 19 it is galvanomagnetic Element designated. The latter is at the bottom of the left thigh arranged.

'Fig. 10 shows an exemplary embodiment with two permanent magnets 20 and 20 ', which are attached to magnetically conductive material 21

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are. The middle leg 22 is also made of magnetically conductive material. At the bottom of the same, the gaivanomagnetic element 23 is arranged. It lies in a small magnet bridge formed by magnets 20 and 20 '. If the two Brdckenzweige 20, 22 and 20 ', 22 equally loaded, ea is that the lines of force in the air or in iron _# veriauf s, then the flows in the center leg lift and the galvanomagnetic element 23 is traversed by virtually no magnetic flux If the bridge equilibrium is disturbed, for example by an information carrier shown in FIGS. 5 and 7, a magnetic flux is created in the middle limb 22 in one direction and the other.

FIG. 11 shows another embodiment of that shown in FIG Query body. A U-shaped permanent magnet 24 receives a middle limb 25 with an interrogation probe 26. In the undisturbed state, the flows in the middle limb cancel each other out,

while when a ferromagnetic part approaches on one leg, the equilibrium is disturbed and the interrogation probe is interspersed with a field. ■:

Fig. 12 shows a strip-shaped information carrier 27 »the with ferromagnetic back yoke parts 28 in the form of the desired Is provided with a sign. In Fig. 13 is the side view of the Support with the query member 29 is shown.

14 again shows a strip-shaped information carrier, which is provided with a code grid 30 made of ferromangetic material Fig. 15 shows a side view of the carrier 34 and

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the interrogator 31 · The probe 32 can be a Hall generator or be a field plate.

9 ·

Fig. 16 shows as an exemplary embodiment a number roller as Information carrier. The inference parts 33 are in Codefprm the information carrier 35 attached. The code can be interrogated in pulse form with an interrogation element 36 movable in the axial direction. The interrogation element 36 sits on a carrier 37 "the is axially displaceable by means of a Crewindespindel 38. A guide rod is designated by 39.The ferromagnetic return

Achlußteile can by inserting, stamping «unrolling or the like. * The! embossing device 35 is preferably made of non-magnetic

sbhem material made.

17 shows a digit roller with a code grid. An interrogation member 40 shown in FIG. 15 is used for interrogation. The code grid is denoted by 41.

Fig. 18 shows part of a digit roller. The jacket 42 is made of ferromagnetic !!! Made of material and has recesses 43 in accordance with the code. The end face 4,4 consists of Plastic or other non-magnetic material. Another one shown in FIG. 10, 11 or 15 is used as an interrogation member Query body

19 shows a drum-shaped information carrier which, for example, can also be a number scroll code slots 46 stamped on their ferromagnetic jacket 45. As can be seen from FIG. 19, such an information carrier can easily be produced from stamped sheet metal by rolling.

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place. A disc 47 made of non-magnetic is used to support the axle Material that is held inside and outside by bending flaps 46 which have been punched out at the same time »

In Fig. 20 it is indicated that the code slots also in strip-shaped Parts 49 can be punched, which then with the help of punched tabs 5u on the circumference of non-magnetic disks 51 are attached on both sides. Instead of stamped in sheet metal Code slots can also be embossed. the The number roll can also consist of ferromagnetic material and the code grid can be milled out.

Fig. 21 shows another way of making a number reel. It is composed of individual code disks 52. The code disks 52 carry lobes 5), the ferromagnetic Form a conclusion * in the magnetic circuit of the interrogator. The individual code disks 52 can be held together by rivets 54 and 55, for example. In dashed Lines is the size of a normal number scroll indicated.

Fig. 22 shows a somewhat different embodiment in which material is saved. Each code disk 56 has tabs 57 punched out on the circumference, which are bent in accordance with the code grid 30 in FIG. 14. Spacers 58 are arranged between the individual code disks 56. In place of these spacers 58, corresponding projections 59 can be formed on the disks 5½. The individual code disks 56 are again held together by rivets 6½ and 61. 2 ° figures
1 '} claims

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Claims (12)

-5/1149 claims 1. Galvanomagnetic device for contactless interrogation of an information carrier (! Memory), in particular digits of a counter, by moving an interrogation organ along transversely to the ¥ ortaohaitbewegung of the information carrier, characterized in that, that the information carrier the information alo change ferromagnetic and non-magnetic oak in the form of the desired codes, and dali the ferromagnetic areas Form at least one part of the magnetic yoke in the magnetic circuit of the galvano-magnetic interrogation element. 2. Device according to claim 1, characterized in that the ferromagnetic areas are ferromagnetic by elevations Materials are formed. 3. Device according to claim 1 and 2, characterized in that daduroh the ferromagnetic areas by appropriately shaped ferromagnetic ones Parts are formed that are on or used on a carrier made of non-magnetic material. 4. Device according to claim 1 and 2, characterized in that daii the bumps are made by stamping ferromagnetic material are. 5. Device according to claim 1, characterized in that a ferromagnetic area is used to produce the ferromagnetic areas - 10 - 909834/1136 Hee / Ca BATH ORIGINAL 44 PIA 65/1149 . . 1474 * 66 Mass rolled up on a carrier made of magnetic material, is pressed in or smeared into corresponding depressions of the same. 6. Device according to claim 1, characterized in that the last Non-magnetic areas have been removed from a ferromagnetic part, for example by punching, etching and the like. « 7 · Device according to claims 1 to 6, characterized in that »dall the information carrier in a known manner as a strip * Tape, disc »roll» tube is executed · β. Device according to Claims 1 and 2, characterized in that the information carrier is composed of punched, ferromagnetic code disks. . 9 · Device according to Claims 1 to Θ, characterized in that » the query organ from a U-shaped or E-shaped permanent or electromagnets and a galvanomagnetic element («.B. magnetic field-dependent resistance, Hall generator or the like) consists, which is arranged in a magnetic circuit « • 10. Device according to claim 9 «characterized in that the galvanomagnetic ^ element is arranged on the pole pieces of the magnets «. ' 11. Device according to claim 9, characterized in that the galvanomaftnetische element is arranged in a magnetic bridge. 11 - 909834/1136 Hee / Approx BATH ORIGINAL PLA 65/1149 12. Device according to Anupruch 1 to 11, characterized in that that for the formation of a queryable number roll several code discs strung together and by means known to calibration, like rivets or the like * held together. 15 · Device according to claim 13, characterized in that a Code grid by bending, punched tabs on the code disks is produced. 12 - 909834/1138 Hee / Ca BATH ORIGINAL Blank page