DE8403396U1 - Control rod - Google Patents

Description

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Siemens Aktiengesellschaft Our mark
Berlin and Munich VPA 84 H 4406 DE

Tax penalty

Oils innovation relates to a control stick for the
Implementation of mechanical movements and / or forces
into electrical signals according to the preamble of claim 1.

It is already known, manually operated control rods
(so-called joysticks) so that at one end that is held in a movable manner, for example, a potentiometer, rotary

angle transducers or switches are attached whose cons «
values or switching states when the

Control stabs can be changed. The movement can be -jj

also take place here in several degrees of freedom, whereby for J

a potentiometer I, for example, for each direction of movement

Is attached, control rods with such a structure are i

the z. B. for remote controls for model airplanes |

used. The disadvantages of these control rods are in particular

special the use of moving parts - e.g. B. the 1

Potentiometer wipers - prone to failure, and ί

the restricted freedom of movement created by the |

structure of the control rod with the mechanically coupled J

Potentiometers or switches is specified. I.

The innovation is based on the task of a control rod
for the implementation of mechanical movements and / or
To create forces in electrical signals in which one
Fail-safe transmission of mechanical actuations of the
Control rod into electrical signals and an optimal use of all movement possibilities of the control rod are possible.

Ag 4 Bz / 02.02.1984

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To solve this problem, a control rod of the type mentioned at the outset has the characteristics of the identifier of the Claim 1 on. With the newly improper control rod In an advantageous catfish the flexible section in such a way Force or movement-sensitive sensors are equipped that when the control rod is actuated on the movable The sensors mounted on the surface of the section end a change in their electrical ones Experience properties. In a particularly advantageous manner, these sensors are so-called multi-component force sensors, namely strain gauges according to dependent claim 2, optionally semiconductor or conventional metal strain gauges, which experience a change in their electrical values when stretched.

Advantageous embodiments of the tax according to the taxation stäbs are specified with the dependent claims 3 to 7.

© -bi & -40-angeg © beH-r Especially when controlling a It is desirable to be able to use a large number of control parameters to display images on display devices. For example, when controlling a cursor on the screen of a display device, it is advantageous to not only the direction of movement, but also the speed of movement of the cursor via the sensors. With the arrangement according to the innovation this can easily be achieved by detecting the extent to which the sensors are affected. A change too the image representation per se, z. B. with regard to the location or the scale of the representation is here by the Variety of movement components of the control rod possible, so that by actuating the free end of the Control rod all these control functions can be performed with one hand. It is also conceivable with the arrangement according to the invention in a direction of movement a lock signal (lock) for a fixation of the image

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to detect representation, whereby either the position doa cursors or other properties of the representation can be held.

Oils innovation is explained with reference to the figures, wherein

Figure 1 is a view of an embodiment of the control table according to the innovation.

FIG. 2 sectional views through different sectional planes of the flexible part of the control rod, FIG. 3 shows an application for controlling a cursor on a screen,

FIG. 4 shows a breakdown of the force or movement components of the control rod and
FIG. 5 shows an electrical block diagram for an application of the control rod for controlling the display on the screen of a display device.

In the embodiment of a control rod 1 shown in FIG. 1, a flexible section 2 is fixedly mounted on a holder 3; the other end of the section 2 carries a handle 4 with which the control rod 1 can be operated by hand. The flexible section 2 carries the strain gauges made of semiconductor material as force- or movement-sensitive sensors 1. Strain gauges 8, 9 »10 and 11 are attached parallel to the course of the longitudinal axis 7 (strain gauges 11 are not visible here because they are opposite the strain gauges 9 on the other side of section 2). Furthermore, there are additional strain gauges 12 and Video- 13 is arranged on the section 2, one above the other respectively crossed at 45 ° to the longitudinal axis 7 also are sectional planes AA ¹ In the figure, BB ^f and CC ^{1 is} specified, t / obei these cross-sectional views in the figure 2 are drawn separately.

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In part a) of figure 2 is the section AA ¹ visible% whereby the position of the two strain gauges 5 and 6 Ip is indicated by the portion. 2 In part b) is the cut

BB ^{1 shown} with the strain gauges 8, 9, 10 and 11, and in part e) the section CC ^{1 is} drawn, the two strain gauges 12 and 13 being indicated one above the other. In part d) of Figure 2 are

the forces are shown which can be applied to the control rod 1 and ⁽ ; thus to the flexible section 2. The <\ 10 force K1 is effective in the direction of the longitudinal axis 7, and in the illustration given here, it acts in the plane of the drawing However, it can also be effective in the opposite direction: Forces K2 and K3 act

], each transverse to the longitudinal axis 7 and are in one

90 ° to each other. A turning I-moment can also be used M1 are applied, with which a torsion

ζ movement of the flexible section 2 and thus the control rod I. in the direction shown here, but can also be carried out in the opposite direction. The extent of all of these operating forces can be adapted to the human hand with which the control rod is operated.

From the representations according to FIG. 2 it can be seen that, for example, in the case of a by a corresponding movement of the control rod caused force K1 the strain gauges 12 and 13 are stressed to elongation and thus a Changes their electrical properties and generates a corresponding electrical signal can be. When a force K2 acts through a corresponding movement of the control rod 1, in particular the strain gauge 9 (compare part b) of Figure 2) - stressed to elongation and the strain gauge 11 compressed, whereby corresponding electrical signals can also be generated with these strain gauges. at The strain gauge 8 and the strain gauge 10, in particular, act on the action of a force K3

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stressed on compression, whereby this movement of the control rod 1 is also detected and converted into an electrical signal can be implemented. A torsional movement due to the torque M1 leads to an elongation or Compression of the two strain gauges 12 and 13 and thus to a corresponding torque-dependent, electrical Signal.

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In the figure 3 is an application of the innovation according to Control rod 1 shown, on a screen 15 of a viewing device 16, a cursor called a marking point 17 is to be moved in its position on the screen. The forces required for this on Control rod 1 are shown in FIG. 4, with I the movement indicated in FIG. 3 from the bottom left Γ to the top right that of the strain gauges 8 ... detected partial forces K2 and K3 lead to a total force K, which is determined by the size of the partial forces K2 and K3 in its direction and amount is fixed. The control of the cursor 17 can be carried out in a simple manner in such a way be made that from the vector direction of the total force K the direction of cursor movement and from the vector length the total force K the cursor movement speed can be detected. In the figure 4 are also still the Forces K1 and M1 shown, with which, for example, a shift or a rotation of the entire representation on the screen 15 by the torque M1 or a change in the scale of the representation on dom Screen 15 can be reached with the force K1.

In the electrical block diagram shown in FIG. 5, the individual sensors or strain gauges 5... 13 (compare; Lohe FIG. 1) are shown schematically in a module 20. The strain gauges are supplied with a voltage by a supply device 21 and can, for example, within the module 20 in t. a gap circuit so 2usarnmengeschaltet that

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when a force acts on the sensors or strain gauges generate a corresponding electrical signal at output 22. In a measuring amplifier 23 are these signals are amplified and in an A / D converter 24 in converted to a corresponding binary information. The connected microprocessor 25 forms the Si ^ aIe into corresponding information for the line-wise image display required here and, for example, determines the direction of movement and to be calculated from the vector direction or the vector length of the total force K Speed quantities. The output signals of the microprocessor 25 are transmitted via a display device control 26 fed to the signal processing parts of the display device 16, so that on the screen 15 based on the figures 2 to 4 on the movable cursor 17 or on the change in the image display can be carried out in the display device 16.

7 claims for protection
5 figures

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Claims (6)

- 7 - VPA 84 H 4406 DE claims for protection 1. Control rod for the implementation of mechanical movements and / or forces in electrical signals with - electrical sensors (5 ... 13) on the control rod (1), which are influenced by the movement of the control rod (1) and which emit corresponding electrical signals, characterized in that - the control rod (1) has a flexible section (2), which is fixedly mounted at one end and at the other end in at least one direction of movement is bendable, and that - At least one force- or bpwegungs-sensitive sensor (5 ... 13) is attached to the flexible section (2) in this way is that in the event of a movement in the at least one direction of movement, the sensor is influenced (5 ... 13) can be reached. 2. Control rod according to claim 1, characterized in that - the force or movement sensitive sensors, strain gauges are. 3- control rod according to claim 1 or claim 2, characterized in that - The flexible part (2) in two mutually perpendicular Movement directions can be deflected transversely to the longitudinal axis (7) and that - At least two force- or movement-sensitive sensors (8, 10; 9, 11) are attached to the flexible section in such a way that at least one of the sensors can be influenced in each of the deflection directions.
35 4. Control rod according to one of claims 1 to 3, characterized in that Il Il! ■ «· Il I I ■ · <··· I Mil I I · ··· '« - 8 - VPA 84 H 4406 DE - the flexible part (2) along the longitudinal axis (7) is compressible and / or stretchable and that - At least one further sensor (5 »6) is attached in such a way that the compression or expansion movements lead to an influence this sensor (5, 6) lead. 5. Control rod according to one of claims 1 to 4, characterized in that - In the flexible section (2) a torsion control around its longitudinal axis (7) can be carried out and that - At least one additional sensor (12, 13) is available which can be influenced by the torsion movement. 6. Control rod according to one of claims 2 to 4, d a characterized in that - Two strain gauges are attached for each direction of movement of the control rod (1) - Are preferably inserted into a bridge circuit in such a way that the greatest possible influence on a electrical quantity results. 30th 7 · Control rod according to claim 6, characterized in that
- The section (2) is a pipe on which - the strain gauges (8, 9, 10, 11) for recording the movements transversely to the longitudinal axis (7) are attached parallel to this and opposite one another, - The other strain gauges (5, 6) for detection the movements parallel to the longitudinal axis (7) are mounted transversely to the longitudinal axis (7) and the - Additional strain gauges (12, 13) for detecting the torsional movement are attached crossed one above the other at an angle of 45 ° to the longitudinal axis (FIG. 1). 35