• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
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  • 引用文献
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  • 优先权
    • 专利摘要:
    1527391 Position finding CESKOSLOVENSKA AKADEMIE VED 16 Jan 1976 [20 Jan 1975] 01745/76 Heading G1N A device for determining the position of a movable member relative to a fixed area comprises at least one system of conductors 2-14 arrayed in the area, a current distributer for supplying an electric current to the conductors for producing a field of constent flux density within the area, and progamming areas for controlling the current distribution thereby to move the field about the area in accordance with a predetermined program. A sensing means is mounted on the movable member and an evaluation device is connected to the programming device and to the sensing element to give an indication of the position of the sensing element relative to the area. An electrically conductive foil 20 may be interposed between the area and sensor.
    公开号:SU1511754A1
    申请号:SU762317856
    申请日:1976-01-20
    公开日:1989-09-30
    发明作者:Седлачек Павел；Гаек Йири
    申请人:Ческословенска Академия Вед.(Инопредприятие)；
    IPC主号:
    专利说明:

    The invention relates to computing and can be used in systems for reading and entering graphic information into computers.
    The purpose of the invention is to improve the accuracy of the method
    A: Figure 1 shows the layout of the reading element and the system of coordinate tires (conductors) for creating magnetic pop; figure 2 - the same, another option
    FIGS. 3 and 4 are examples of arrangements for Cartesian and polar coordinate systems; Fig. 5 is a block diagram of a device for implementing the method; figure 6 - timeline diagram and the shape of the electric pulses fed to the coordinate tires.
    In Figures 1 and 2, reference numeral 1 denotes a reading element, and positions 2-14 designate coordinate tires (wiring
    cl
    four
    3 15
    ki), 15a and 15c are curves of changes in induced voltage.
     In Fig. 5, the positions 16-19 denote the switches 16 and 17, the coordinate determining unit 18, and the outputs 19 of the block 18, respectively. The position 20 denotes the conductive layer in which a magnetic field is created due to the two-way feedback of this layer with the conductors 2 -14.
    The coordinate determining unit 18 comprises a pulse generator 21, a counter 22, a memory 23, an amplitude discriminator 24. The latter comprises a pulse shaper 25 and threshold elements 26-28.
    The conductor through which current flows forms the source of the electromagnetic field. If this conductor is moved near the reading element, made, for example, in the form of a coil, then, depending on the change in magnitude, an electromagnetic flux is induced in it, which is caused by the distance between the conductor and the reading element (Figs. 1 and 2)
    The movement of the conductor can be caused by switching current (translational switching) according to FIG. 6 in a system of conductors located close enough to each other, due to which a quasi-continuous effect occurs, providing relatively fine interpolation resulting in relatively high resolution.
    The mechanism for producing a change in the induced voltage 15a depends on which of the conductors 2-14 successively flows a current (Fig. 1). This current causes a magnetic field that induces a induced current in the conductive layer 20 due to two-way feedback of the current. with conductors 2-14. Moreover, the field moves with the current continuously switched to conductors 2-14.
    In the reading element 1, made in the form of a roller, the voltage induced depending on the distance of the source of the magnetic field from the reading element is induced. At the same time, as the magnetic field moves towards the matching element, the induced voltage is med17544
    It gradually increases from the value of L s nor- to the maximum of one polarity, e gggem falls to the value of rest, rises again to the maximum of the other polarity, and again drops to the value of rest.
    All voltage variations are determined by the distance from the source of the magnetic field. Moreover, the quiescent point is used as a transition point. From information about the position of the source of the magnetic field and about the moment due to the selected transition point
    15, the voltage in the coil determines the position of the latter.
    According to FIG. 2, the mechanism for the occurrence of the induced voltage 15b depends on which
    20 of the conductors 2-14 current flows, caused by sequential switching of the conductors 2-14.
    According to FIG. 6, it is preferable that when the current drops in the preceding
    The conductor 25 would simultaneously have a corresponding increase in the current in the subsequent conductor so that the sum of the currents in all the conductors would remain largely constant.
    30 In FIG. 3, a schematic arrangement of the device is given, with the conductors 2-14 arranged parallel to the reading plane and the coordinate axes on this plane are determined.
    25 The device has a conductor system 2-14 parallel to the reading plane. Moreover, from the conductors it is used as a source of an electromagnetic field, a current flows through it and it determines the first axis of coordinates.
    Near this system is located reading element 1 with at least one coil. Element 1 is connected with a coordinate determination unit 18, which is connected to switches 16 and 17 for the series connection of conductors 2-14, which is accompanied by the movement of a magnetic field.
    The switches 16 and 17 are controlled in such a way that the current passes through the conductors 2-14 in succession, each of which creates a magnetic field that moves in the same way as the conductors in turn increase the current.
    A change in this magnetic field induces a voltage in element 1
    50
    55
    51
    (coil). The tendency of Kenya from the coil to block 18 J K-thr to evaluate the position of the reading element 1, depending on the current path in the KOMNryator 16 and 17 and the voltage in the coil
    To determine the position in a more than one-dimensional system, several conductor systems can be used so that they form a coordinate grid. The arrangement can be arbitrary, for example, in a common plane. The course and sequence of the current connection may vary depending on the requirements of these conditions and the accuracy of the estimate (Fig. 4).
    FIG. Figure 6 also shows the current path in individual conductors, for example, 7-9, for a constant speed of movement of the magnetic field. This results in the movement of a magnetic field, mainly with a constant speed, which can be represented as a result of the movement of an effective source of a magnetic field, which successively extends also to the daily distance of the space between the conductors, due to which fine interpolation is carried out depends only on the degree of approximation to the absolutely uniform movement of the magnetic field.
    A quasi-continuous process of moving the magnetic field is achieved directly; by alternating the supply of adjacent conductors, for example, by temporarily shutting off the supply of this system of conductors.
    The slow rise and fall of the current 3 separate adjacent conductors is achieved by directly profiling this current or by a rectangular voltage path feeding the conductors by deliberately distorting the current path. Thats
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    The invention will find application in contactless reading, for example, in reading points B of cartography, in geodesy, using a system with digital control, processing documentation for
    information, reading the position of the pen of the drawing device, determining the position in multidimensional; and one-dimensional systems; where it is necessary to use several systems of conductors arranged with the formation of a grid “
    权利要求:
    Claims (1)
    [1]
    1. A method for determining the position of a krallny measure of one matching element with respect to the coordinate system of tires, based on induction of an induced signal. In the reading element under the influence of a magnetic field, excitation, electric current, coordinate buses, about l and h and with that. which, in order to increase the accuracy of the method, excite a magnetic field with a given
    The location of the reading element is determined by the direction and speed of movement, and the magnitude and shape of the signal in the reading element induced at a selected point on the curve of change in the induced signal, preferably in its steepest part.
    2, The method according to claim 1; characterized in that they excite a magnetic field with a predetermined direction and speed of movement by feeding to coordinate buses a sequence of electric succession x with a constant frequency of overlapping pulses of constant amplitude and equal front and rear edges.
    go
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    类似技术:
    公开号 | 公开日 | 专利标题
    US4054746A|1977-10-18|Electronic coordinate position digitizing system
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    US3819857A|1974-06-25|Electromagnetic induction type pattern input apparatus
    GB2032115A|1980-04-30|Graphic digitizer
    US4213005A|1980-07-15|Digitizer tablet
    SU1511754A1|1989-09-30|Method of locating at least one readout element relative to system of coordinate buses
    US3581045A|1971-05-25|Digitally controlled electroerosion machine
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    US4473717A|1984-09-25|Digitizing system
    US4017978A|1977-04-19|Device for taking an impression and visualizing said impression
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    US4449030A|1984-05-15|Apparatus for sensing the distance between an object of electrically conductive material and a reference point
    US2945956A|1960-07-19|Course plotter
    US2792173A|1957-05-14|Function generator
    US3086151A|1963-04-16|Positional control system and pickoff therefor
    US4104648A|1978-08-01|Electric spark recording
    US3596177A|1971-07-27|Energy field probe of consistent attitude capable of moving with three degrees of freedom
    SU729602A2|1980-04-25|Graphic information readout method
    SU463101A1|1975-03-05|Programming device
    US2932025A|1960-04-05|Course plotter
    同族专利:
    公开号 | 公开日
    US4061966A|1977-12-06|
    DD122292A1|1976-09-20|
    DE2601705A1|1976-07-22|
    HU176648B|1981-04-28|
    FR2298080A1|1976-08-13|
    GB1527391A|1978-10-04|
    CS177652B1|1977-08-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2671308C2|2013-04-12|2018-10-30|Кардлаб Апс|Card, assembly, method of assembling card and method of outputting information|
    RU2695533C2|2013-04-12|2019-07-23|Кардлаб Апс|Offset field map|US3270281A|1962-12-03|1966-08-30|John B Mandle|Apparatus for measuring and digitally indicating linear displacement between two relatively movable members|
    GB1189981A|1966-05-19|1970-04-29|Ernest Howbrook|Improvements in and relating to Displacement Measuring Devices|
    GB1259787A|1968-11-26|1972-01-12|Nat Res Dev|Phase actuated position determining device|
    US3648277A|1970-07-21|1972-03-07|Science Accessories Corp|Magnetic graphical data device|
    GB1340522A|1971-01-14|1973-12-12|Quest Automation|Apparatus for converting graphical information intoco-ordinate data|
    LU65252A1|1971-04-28|1972-07-14|
    DE2214961C3|1972-03-27|1974-09-19|Hahn-Meitner-Institut Fuer Kernforschung Berlin Gmbh, 1000 Berlin|Arrangement for determining the position coordinate of a probe|
    US3873770A|1974-03-21|1975-03-25|Bendix Corp|Digital position measurement system with stylus tilt error compensation|SE413265B|1975-10-22|1980-05-12|Data Automation Corp|DEVICE FOR DETERMINING MEDICAL COORDINATES ON A WORKPLACE|
    US4250451A|1978-12-28|1981-02-10|Cordless Power Corporation|Magnetic induction imaging system|
    US4455451A|1982-07-12|1984-06-19|Perq Systems Corporation|Digitizer tablet|
    US4947460A|1984-10-05|1990-08-07|Kontron Elektronik Gmbh|Cursor for an inductive sensor for use with a digitizer board|
    DE3436642A1|1984-10-05|1986-04-17|Kontron Elektronik|CURSOR FOR AN ELECTROMAGNETIC DIGITIZER AND METHOD FOR PRODUCING THE SAME|
    US5149918A|1990-10-29|1992-09-22|International Business Machines Corporation|Touch sensitive overlay|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CS374A|CS177652B1|1975-01-20|1975-01-20|
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