DE1215198B - Code disk arrangement for converting analog quantities into decadic-numerical quantities - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

H03k

German KL: 21 al - 36/00

Number: 1215 198

File number: L 39663 VIII a / 21 al

Filing date: July 29, 1961

Opening day: April 28, 1966

The invention relates to a code disk arrangement for converting analog quantities into Decadic numerical quantities using contact pieces and devices that scan the contact pieces at the same speed.

In such a code disk arrangement, the displacement of a scanning device or the Sliding contact of a potentiometer through decimal display using indicators that light up one after the other or transformed by rashes of organs of a keyboard device or in some other way will.

Arrangements for repositioning that work analog-numerically with contact pieces or similar parts, which fulfill the functions given above are known.

These known arrangements are generally complicated and cumbersome. You wise for example mechanical reductions in order to switch between the movement speeds of the conversion or connecting organs for different groups of ten of contact pieces a ratio from ten to one.

The aim of the invention is directed to a working according to an analog-numerical system To create an arrangement with several groups of ten of contact pieces, which is much easier is designed as the previously known arrangements for closing electrical circuits, the various Decimal places correspond to multi-digit numbers in the tens system. This arrangement is intended work with improved precision, in particular because reductions are avoided.

According to the invention, the code disk arrangement for analog-numerical conversion has contact pieces which are arranged in series assigned to a specific decimal place in such a way that the series corresponding to the highest decimal place has ten contact pieces, while the other series 10 ² , 10 ⁸ . . . 10 "have contact pieces, which are divided into groups of ten in each series with the numbering 0 to 9, whereby each group of tens of a series of the decimal place m represents the same value as the corresponding contact piece of a series of the decimal place m + 1, so that the number of groups of ten in a series of the decimal place m is the same as the number of contact pieces in a series of the decimal place m + 1. Movable scanning devices work together with this series of contact pieces to close the circuits one after the other
Sizes in decadic-numerical sizes

Applicant:

Les Laboratories de Physique Appliquee, Paris

Representative:

Dipl.-Ing. G. Gollrad, patent attorney,

Munich 22, Herrnstr. 14th

Claimed priority:

France of July 29, 1960 (834 698)

nent η specifies the maximum number of decimal places for which the arrangement is set up.

as Another advantageous feature of the invention Arrangement is that the contact pieces of each group of ten with numbers are provided that each group of ten have these numbers in a mirror-inverted order of the two has adjacent groups of ten and that to interact with each series of contact pieces each two scanning devices are provided, each of which is referenced in the same sense as the numbered groups of ten cooperates and that the two scanning devices are arranged and designed in such a way that that in each case one of the two scanning devices is disabled.

As a result of these peculiarities, in particular the reflected numbering, the joining of the Contact pieces are considerably simplified, and it is possible to produce practically 10 "groups of ten contact pieces to be arranged in a single series and at the same time the dimensions of the arrangement relative to keep it low.

According to another advanced feature of the invention is between two consecutive contact pieces each provided an intermediate piece not connected to the circuits, so that the in use scanning device suddenly from the one position in which it is in contact with the intermediate piece and a preceding contact piece, merges into a position in which

609 560/426

it is in contact with the intermediate piece and the following contact piece.

Further details of the invention are given by the following, detailed, with reference to the Drawings given description explained more clearly. In the drawing examples shows

1 shows an arrangement according to the invention with illuminated indicators in a schematic representation,

F i g. 2 as a detail the scheme of the connection between the contact pieces of three each other following groups of ten of the same series,

3 shows a schematic section through two contact pieces lying next to one another.

The in F i g. The arrangement shown in FIG. 1 is set up to display three groups of ten illuminated indicators Vu, Vd and Vc . The numbers are displayed as a function of the respective position of the scanning device 1.

This device 1 and also the scanning devices for the other groups of ten are movable in the directions of the dashed axes 2, 3 and 4.

The scanning device for the graduation Gu (units) has the buttons 5 and 6, the scanning device for the graduation Gd (tens) the buttons 7 and 8 and the scanning device for the graduation Gc (hundreds) the button 9.

For the exemplary embodiment of the arrangement shown in the drawing, it can be assumed be that the movement of the scanning device 1 is determined by the shaft of a servo potentiometer and that the position is indicated by graphical representation in the range between 0 and 1000 where the number 1000 corresponds to the passage through an angle of 360 °.

Each graduation is formed by ten conductive contact pieces arranged one behind the other, the are isolated from one another and numbered from 0 to 9.

For example, for a displacement of 198, a scanning device is guided along in front of the graduation Gc until it stops at the contact piece 1. Each contact piece is connected to a luminous sign which shows the corresponding number. When the scanning device 9 touches a contact piece of the graduation Gc , the corresponding indicator lights up. In the example under consideration, the number 1 of the group of ten is displayed for the hundreds.

. The digit of the tens decimal place is displayed by means of the graduation Gd, which has a hundred conductive contact pieces arranged one behind the other, insulated from one another and divided into ten groups of ten. Each group of ten is numbered from 0 to 9 and a flag for indicating a specific digit is connected to the ten contact pieces whose number corresponds to this digit.

In the numerical example under consideration, the button 8 stops on the associated graduation Gd on the contact piece 9 of the second group of tens in order to indicate the tens digit of 198.

In the same way, the button 6 stops above the contact piece 8 of the twentieth group of ten of the graduation Gu in order to display the units digit of 198. .

The general arrangement described above can be formed by electrical conductors, which are insulated on a support serving as a support Plate of relatively small dimensions are pressed. The invention makes it possible a display device for many groups of tens (the three groups of tens shown as an example do not represent a limitation), which is particularly simple and takes up little space and with which neither electronic equipment nor reduction gears are required.

The three graduations Gu, Gd and Gc are arranged in the form of an arc of a circle and concentrically in the example shown. To simplify the figure, not all of the conductors in the area have been drawn, only part of them.

An advantageous feature of the invention is that the contact pieces following one another groups of tens of degrees Gd and Gu are numbered in reverse order so that the sequence of numbers in each group of ten is a mirror image of the preceding and following ("mirror-image numbering").

As can be seen from FIG. 2, this arrangement simplifies the connection of contact pieces for same numbers in the different groups of ten.

This type of connection is practically made possible by the fact that two scanning devices are used for each graduation Gu and Gd and by changing them when passing from one group of ten to the other. The two buttons 5 and 6 are connected via a relay 10, the two buttons 7 and 8 via a relay 11.

In the position shown, the button 5 is out of use, while the button 6 connects a circuit via the contact 12 of the relay 10, which is in the rest position, the contact piece 8 of the twentieth group of ten of the graduation Gu, the indicator associated with the contact piece 8, the contact 13 a relay 14, the mode of operation of which will be explained later, closes the current source 15 for the indicators and via the return line 16. If the movable member 1 moves, for example, into the position 200, the button 9 moves to the contact piece 2. The result is that the indicator, which belongs to the contact piece 1 of the hundreds series, and the relay 11 no longer with it Electricity can be fed. The relay 11 then goes into its rest position. (In the figure, this relay is shown in the working position.) In this position, the button 7 is in use. The relay 10 is supplied with power so that it assumes its working position and thus brings the button 5 to use.

From this arrangement it can be seen that indicator 0 is the one, indicator 0 is the Tens and indicator 2 of the hundreds are energized.

It can also be seen that the relay 14 is only supplied with current as long as one or the other other of the buttons 5 and 6 is in contact with a contact piece for an odd number. To this At this point, the circuit for the indicator of the even numbers is interrupted. (The switch 13 is closed.) From this it follows that as soon as a pushbutton of a contact piece for an odd Number goes over to a contact piece for an even number, only one of the two corresponding indicators each can light up.

It can therefore be set up so that the buttons never make contact with one or the other other two consecutive contact pieces

lose, so that a flag is always illuminated in the group of ten, as long as the device is working.

Two more relays 17 and 18 for separating the indicator pairs play the same role as that Relay 14 for the tens groups of tens and hundreds decimal places.

Fig. 3 shows a section through contact pieces 20 and 21 which are a good distance from each other have, as is often the case with the degrees of tens and hundreds. Here, the isolating relays 17 and 18 have been replaced by an intermediate piece 22, which like the Contact pieces 20 and 21 is firmly placed on the plate 23 made of insulating material. The button 24 is pressed elastically against the contact pieces and spacers, so that he, for example, between the contact 20 and the intermediate piece 22 which are shown in FIG. 3 position shown can take. at the movement of the button 23 from the contact piece 20 via the intermediate piece 22 to the contact piece 21 the resiliently mounted button 23 with the contact piece 20 and the intermediate piece 22 remains in for as long Touch until the pressure exerted on the button suddenly moves it over the intermediate piece 22 brings to rest against the contact piece 21.

The interruption of the lighting of the two indicators assigned to the contact pieces 20 and 21, respectively Thanks to this arrangement, it is so short that it cannot be perceived.

From FIG. 1 it can be seen that two subsequent groups of ten share their contact piece 9 to have. This common contact piece has the width of two normal contact pieces and one Space.

The exact position of the button 8 on such a double contact piece thus has no influence on reading. From this it follows that the accuracy of the display and reading is the only thing is determined by the accuracy of the arrangement of the spaces between the contact pieces. (The latter are made the same for all three graduations.) This accuracy can be obvious be very large for pressed-on conductors. The setting of the buttons can be done easily if they are in one of these spaces (see. Fig. 3).

As can be seen from FIG. 1, the device according to the invention successively closes the Circuits for the lighting of the indicators or for the number display.

Claims (3)

Patent claims: 1. Code disk arrangement for converting analog values into decadic-numerical j sizes using contact pieces and devices that scan the contact pieces at the same speed, characterized in that the contact pieces are each assigned to a specific decimal place series (Gu, Gd, Gc.. ) are arranged in such a way that the series (Gc) corresponding to the highest decimal place has ten contact pieces, while the other series (Gd, Gu) have 10 ² , 10 ³ . . . 10 "have contact pieces, which are divided into groups of ten in each series with the numbering 0 to 9, whereby each group of tens of a series of the decimal place m represents the same value as the corresponding contact piece of a series of the decimal place m + 1, so that the number of groups of ten in a series of the decimal place m is the same as the number of contact pieces in a series of the decimal place m + 1. 2. Code disk arrangement according to claim 1, characterized in that the contact pieces each group of ten are numbered in such a way that each group of ten has these numbers in a mirror-inverted order to the two adjacent groups of ten and that two scanning devices are provided for cooperation with each series of contact pieces each of which interacts in the same sense with the numbered groups of ten, and that the two scanning devices are arranged and designed such that each one of the two scanning devices is disabled. 3. Code disk arrangement according to one of claims 1 or 2, characterized in that that between two consecutive contact pieces (20, 21) each one not with the Circuits connected intermediate piece (22) is provided so that the one in use Scanning device suddenly from the one position in which it is in contact with the intermediate piece and a preceding contact piece is transitioned to a position in which it is in contact with the intermediate piece and the following contact piece is (Fig. 3). Considered publications:
"Electronics", 1958, No. 7, pp. 201 to 207. 1 sheet of drawings 609 560/426 4.66 © Bundesdruckerei Berlin