DE1054145B - Device for the automatic setting of an object in discrete positions, each of which corresponds to a command given as a combination of binary number components - Google Patents

Description

GERMAN

A device of the type mentioned above has already been proposed in which the command transformed into a combination of open and closed light gates for photoelectric scanning becomes and all occurring dual combinations on a turntable coupled with the object are stored in the form of groups of open and closed windows. The window each such group are arranged radially on the turntable, and the light gates are in front of this disc in a row that also runs radially so that all rows of windows during one revolution of the pane one after the other to coincide with the row of light gates. Behind the turntable, so behind the row of windows opposite the light gates, a light source is provided, and the light rays, which fall through the windows and light gates control the one used to adjust the object Motor via photocells and relay so that this setting motor runs until the open Light gates face closed windows so that no light falls on any of the photocells. Such a The case now occurs - unless all light gates are currently open - with a two-digit number Dual code twice and correspondingly more frequently for higher-digit dual codes. Against it joins each binary code is the case only once, in which the further condition is fulfilled at the same time that the closed light gates face open windows. This clear case is the desired one Adjustment of the subject assigned. So that this attitude is now achieved with certainty, although the second condition cannot be checked by the scanning device, must with the known Set up the window groups on the turntable in numerically progressive order, and the setting of the disc must always be carried out starting from a zero position. The concept of numerically progressive order is understood here to mean that the value of the closed Window of the individual groups represented binary numbers starting from the zero position increases monotonically.

The disadvantage of this device is the need that the turntable - and thus the one to be set Object - must first be returned to the zero position before each new setting. This means, if all angular positions occur equally often, an average adjustment path of almost a full turn, namely half a turn for turning back to the zero position and half a turn for the new setting from the zero position. To avoid this disadvantage becomes a device for automatic adjustment for devices of the type described

of an object in discrete positions, each of which is a combination of

Binary number components given

Command corresponds

Applicant:
Hagenuk

formerly Neufeldt & Kuhnke G. mb H,
Kiel, Westring 431-451

Dipl.-Ing. Hermann Saacke, Kiel-Kronshagen,
has been named as the inventor

proposed according to the invention, a second scanning device formed from light gates and photocells to be arranged offset by 180 ° in relation to the first, whose light gates are controlled by the same command that the light gates of the second scanning device corresponding to the light gates Scanning device are closed instead of open, and vice versa (complementary combination), and to distribute the groups of open and closed windows on the rotating body so that they are complementary to one another Window combinations also offset from one another by preferably 180 ° on the rotating body are, while the setting motor is controlled by both scanning devices so that it only then stops when both scanning devices open the light gates and the closed windows Open windows face closed light gates, so that none of the photocells of both scanning devices Light falls.

With the aid of the second scanning device, a kind of cross-check is carried out. If namely Also with this scanning device, all open light gates face closed windows and so that no light falls on their photocells, so it is clear that the closed light gates of the The first scanning device is sure to face open windows, since there is always an open one. window the one scanning device corresponds to a closed window of the other scanning device and the same also applies to the light gates. This precludes any ambiguity in the setting from the outset,

809 788/268

so that not only is it unnecessary to reset the turntable to the zero position, but not even once more it is necessary to continue turning in the same direction of rotation. Rather, the rotating body can now always open can be brought into the new setting in the shortest possible way. Circuit arrangements showing the direction of travel of the adjusting motor reversing accordingly are known. The mean adjustment path can thus be limited to a quarter turn in the device according to the invention, so that with her four times the working speed can be achieved.

The figures show exemplary embodiments of the invention in a simplified and schematic form.

In Fig. 1, D is a turntable on which sixteen window groups are arranged radially at regular angular intervals. The closed windows are indicated by the black filled circles. Each of these window groups embodies a four-digit binary number. The groups are distributed in such a way that two complementary groups are always offset from one another by 180 °. So correspond z. B. the closed windows P ₁₁ and F _14, the open windows F ₉₁ and -F _{94 of} the opposite window group; the closed windows F ₉₂ and F ₉₃ also correspond to the open windows F ₁₂ and F ₁₃ . Further conditions for the arrangement of the window groups do not need to be fulfilled, in particular not those of the numerically progressive order.

In front of the turntable D , the controllable light gates L ₁ , L ₂ , L ₃ , L ₄ and - offset from these by 180 ° - the light gates L ₁ ', L ₂ ', L ₃ ', L ₄ ' are arranged. S ₁ ... S ₄ and S ₁ ... S ^ are the control magnets for these light gates. On the basis of a given command, the light gates are controlled in such a way that L ₁ and L _{4 are} often, L ₂ and L ₃ are closed, while the light gates L ₁ 'and L ₄ ' are closed, L ₂ 'and L ₃ ' are open.

_{The photocells Z 1} ... Z ₄ and Z ₁ '... Z ₄ ' are arranged in front of the light gates. As soon as and as long as light falls on one of these photocells, the relay R receives power and keeps its contact r closed, which is in the supply line to the electric motor M so that it drives the turntable D via the worm drive Sch and the shaft W. . If, on the other hand, as is the case in the position shown of the turntable, the open light gates, namely L ₁ , L ₄ and L ₂ ', L ₃ ', closed windows, namely F ₁₂ , F ₁₃ and F ₉₁ , F ₉₄ , are opposite, all photocells are unexposed, and the relay R drops out, so that the motor M stops. The position of the turntable reached in this way (and the object to be thought and adjusted coupled with it) corresponds to the given command.

The condition of the photocells being dark could be met several times _{for photocells Z 1} ... Z ₄ or for Z ₁ '... Z _{4' alone.} So z. B. the photocells Z ₁ .. .Z _{1 are} also all dark when the light gates L ₁ . . ·. L ₁ the window group F ₅₁ ... F ₃₁ faces. In this case, however, the light gates L ₁ '... L ₄ ' are facing the windows F ₁₃₁ ... F ₁₃₄ and thus the open light gates L ₂ 'and L ₃ ' are opposite the open windows F ₁₃₂ and F ₁₃₃ , so that the photocells Z ₂ 'and Z ₃ ' receive light; in this way the ambiguity of the setting is avoided.

It should also be noted that - if the turntable is not made of transparent material - all photocells are inevitably unexposed when the spaces between the window groups pass the light gates, so that the turntable after the given command appears when the next one appears The space in between would remain. This is avoided in the following way: At the edge of the turntable /) there are notches K in the same number and distribution as the window groups. Furthermore, a push button contact TK is connected in parallel to the relay contact r and is spatially arranged in such a way that it falls into one of the notches when groups of windows and light gates are congruent.

ίο In these cases the push button contact TK is open, while it is closed in the intermediate positions after it has left the relevant notch and bridges the relay contact r so that the motor M continues to run independently of the light control until the next group of windows is opposite the light gates and the push button contact TK has fallen into the next notch.

The device according to the invention can be simplified to the effect that only one Provides photocell and with the help of simple optical means all the light gates and windows penetrate Directs light beams onto this photocell.

Instead of using controllable light gates, you can of course also use the common light source behind the turntable by a series of individual lamps, for each window of the respective replace scanned groups with one that is light or dark controlled by the command.

The idea of the invention can be applied with the same success to a further device, which is somewhat modified compared to the one described, in which the adjusting motor runs until light falls on all photocells. For this purpose, Fig. 2 shows an exemplary embodiment in a schematic representation. The turntable designed just like the one shown in Fig. 1!) Is drawn here in section. Behind the turntable D two festoon lamps SL are arranged, the light of which, in the position of the turntable shown, the rows of windows F ₁₁ . . . F ₁₄ and F ₉₁ . .. F ₉₄ illuminated. In front of the turntable, opposite these two rows of windows, instead of the light gates, the complementary controlled lamp groups L ₁ ... L _i and L ₁ '... L ₄ ' are arranged

+5 actuated control contacts ^ ₁ ... i ₄ and J ₁ '... S ₄ ' are connected to voltage. The photocells Z ₁ ... Z ₄ and Z ₁ '... Z ₄ ' are all connected in series, so that a passage of current is only possible when all the photocells are exposed. The relay R in the photocell circuit is provided with a break contact r in this device, which interrupts the circuit of the setting motor M when the relay is energized.

On the basis of a given command, the control contacts are in such a way that lamps L ₁ , L ₄ and L ₂ ', L ₃ ' are on, while lamps L ₂ , L ₃ and L ₁ ', L ₄ ' are dark. As soon as now, as is the case with the position of the turntable, the burning lamps are facing closed windows and the dark lamps are open windows, all are over

So exposed to photocells, either through the

light-controlled lamps of lamp groups L ₁ L ₄

and L ₁ '... L ₄ ' or through the light of the festoon lamps that penetrates the open windows and the dark lamps or is guided past them. DasRelaisi?

then receives power and stops the setting motor M.

Even with this facility, the assignment between command and setting would not be unambiguous of the turntable exist, if not both of the 180 ° offset and complete

Claims (2)

mentally operating scanning devices would be provided. Patent claims: 1. Device for the automatic adjustment of an object in discrete positions, whose each corresponds to a command given as a combination of binary number components, where the command for the purpose of photoelectric scanning in a combination of open and closed Light gates is transformed and all occurring on a rotating body coupled with the object Dual combinations in the form of groups of open and closed windows are saved in this way are that with one revolution of the rotating body all window groups one after the other with the Light gates to coincide, furthermore an adjustment motor for the object by light beams, which fall through the light gates and windows onto one or more photocells, via relays is controlled so that it runs until the open light gates closed windows and the open windows face closed light gates, characterized in that a second Scanning device formed from light gates and photocells is arranged offset by 180 ° with respect to the first, the light gates of the same Command are controlled so that the corresponding to the light gates of the first scanning device Light gates of the second scanning device are closed instead of open, and vice versa, and that on the rotating body the groups of open and closed windows in such a distribution are arranged that mutually complementary window combinations also by 180 ° are offset from one another on the rotating body, while the setting motor by both scanning devices is controlled so that it only stops when both scanners open light gates, closed windows and open windows face closed light gates. 2. Device according to claim 1, characterized in that all the light gates and Light beams penetrating the window are directed onto the same photocell. 1 sheet of drawings © 809 788/263 3.