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JPH02276400

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
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DESCRIPTION JPH02276400
[0001]
The present invention relates to a three-dimensional information processing apparatus, and more
particularly to a three-dimensional information processing apparatus for outputting input threedimensional information as tactile information. [Prior Art] Conventionally, as a Braille or
character display device for visually impaired persons, a display bin is projected from a display
surface using a driving force of a piezoelectric element, and Braille, characters and other threedimensional information are displayed. Devices for displaying are known. In this type of
apparatus, a method has been adopted in which a piezoelectric element is used as means for
obtaining the output displacement as described above, and the output is expanded to such an
amount that a blind person or the like can touch through the displacement expander groove.
[Problems to be Solved by the Invention] In the above-mentioned conventional display devices,
piezoelectric elements are often used as actuators for display bins, but in the case of piezoelectric
elements, the amount of mechanical displacement obtained is very small. Therefore, a mechanism
for enlarging the displacement of the element is necessary, and it is difficult to display multi-step
three-dimensional information by changing the projection amount of the display bin, and in many
cases, only binary display of projection or non-projection can be performed. There are many.
Moreover, in the apparatus using the conventional piezoelectric element, there existed a problem
that operation noise was large. An object of the present invention is to solve the above problems,
and to provide a quiet three-dimensional information processing apparatus capable of outputting
multi-valued three-dimensional information by a large displacement amount. [Means for Solving
the Problems] In order to solve the above problems, in the present invention, a pressure chamber
provided in the outer shell of the apparatus and filled with a predetermined liquid, and the inside
of the pressure chamber are communicated with the atmosphere or The pressure control system
includes a control unit that shuts off, a heating unit that heats the liquid in the pressure chamber,
and an output shaft that generates a mechanical displacement amount in accordance with the
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pressure in the pressure chamber. The output shaft is made to project from the apparatus outer
shell by heating the liquid by the heating means and increasing the pressure in the pressure
chamber in a state of being shielded from the atmosphere, while the control chamber
communicates the pressure chamber inside with the atmosphere. The actuator having a
configuration for returning the output shaft to the initial position is arranged in a matrix, and
means for outputting three-dimensional information that can be sensed by the tip of the output
shaft is adopted. [Operation] According to the above configuration, since the output means for
generating the displacement amount by pressure control is used, a large variable displacement
amount can be obtained as compared with the piezoelectric element or the like, and the quiet
operation is It is possible. The present invention will be described in detail below based on the
embodiments shown in the drawings. Here, a three-dimensional information processing
apparatus that reads three-dimensional information and outputs it as tactile information is
illustrated.
1 and 2 show the structure of a three-dimensional display device adopting the present invention,
FIG. 1 showing the control system of the device, and FIG. 2 showing the appearance of the device.
First, the output system will be described. In both figures, reference numeral 101 denotes a
housing of the output device, and the output displacement shaft group 110 is arranged in a
matrix on the outer surface thereof. The output shaft 110 can be controlled independently of the
height displacement of its respective output shaft. In the figure, i and j indicate the positions of
the rows and columns of the matrix formed by the output shaft 110. The output shaft 11.0 is
driven by a control system described later to display three-dimensional information on the shape
of the object 205 input from the case 201 of FIG. Two operation means are provided on the
housing lot of the output shaft 110. First, reference numeral 102 is a reset button for returning
all of the output shaft 110 to the initial position simultaneously. Further, reference numeral 104
denotes a mode switch for switching a display mode to be described later, which includes a slide
switch and the like. Next, the input system will be described. In FIG. 2, reference numeral 201
denotes a housing of input means (reference numeral 200 in FIG. 1), which has a Z encoder 204
for reading the shape of the object 205. The two encoders 204 are slidably supported by the
arms 203 in the Z-axis direction, and read three-dimensional information about the height
direction of the object 205. The arm 203 is supported on the housing 201 via the XY child table
02, and at the time of input, the arm 203 is moved in the X and Y axis directions according to a
predetermined pattern, whereby the Z encoder 204 205 is scanned and its height information is
input. The control system of FIG. 1 is accommodated inside the case 201 to the case 101 of FIG.
As shown in the figure, the control system is composed of an input unit 200, an arithmetic unit
11 i 3 between the display output unit 100 and a control unit 12. Reference numeral 103 in FIG.
2 denotes a cable including a signal line between the arithmetic unit 11 and the input unit 200
or between the control unit 12 and the output unit 100. Arithmetic unit II is constituted by a
microprocessor or the like, and according to a control program stored in ROM 11a, address
information (information on the scanning position of Z-encode 204 along the X and Y axis
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directions in FIG. 2) Level information (height, that is, information regarding the Z-axis direction
in FIG. 2) of the two encoders 204 at that address is input, the output device 100 is converted
into controllable information, and is input to the control device 12.
The control unit 12 controls the output shaft 110 of the output unit 100 based on the input
information from the arithmetic unit 11, and causes the input three-dimensional information to
be displayed and output. Next, the structure of the output system will be described in detail. In
this embodiment, not the drive means by the conventional piezoelectric element but the drive
means using the pressure change according to the temperature change of the liquid is used as
the output shaft 110. The drive mechanism of the output shaft 110 is shown in detail in FIGS. 3
(A) to 3 (C). In FIGS. 3 (A) to 3 (C), reference numeral 2 is a substrate for supporting the drive
mechanism, and on this substrate 2, a heating element 2a is provided which generates heat by
energization from the terminal 2c. The surface is covered by the layer 2b. The code | symbol 3 is
a structure which has the recessed part 3a, it has holes 3c and 3d in the one part, and the upper
end part is penetrated by the hole 1a of the upper structure l. An output shaft 110 is slidably
fitted in the vertical direction in the hole 1a. The output shaft 110 is biased downward by a
spring 8. The upper structural body l, the substrate 2, and the structural body 3 are configured
such that the respective bonding portions maintain sealing properties, and that the concave
portion 3a does not leak gas from other than the insertion hole at any time of the reference
numeral in the figure. . The output device is used in the position of FIGS. 3 (A) to 3 (C), and the
upper position of the liquid 1 in the recess 3a is the air chamber 3b as shown. Reference numeral
4 is a control plate which is guided by the guides 5 and 6 against the spring 9 and is movable in
the left and right direction of FIG. 3 (C). The position of the control plate 4 is the holes 4a and 4b.
It is controllable between a position aligned with 3c, 3d and a position in sealing relationship
with each other. When the heating element 2a is energized, the liquid boils and bubbles are
generated, and the internal pressure of the air chamber 3b rises, and the output shaft 110 moves
from the position of the code 7A to the biasing force of the spring 8 against the biasing force of
the spring 8 (Fig. 3 (B)) is displaced. When resetting the output shaft, the internal pressure of the
air chamber 3b is reduced to atmospheric pressure against the spring 9 using a solenoid (not
shown) or the like, and the pressure of 7B or each output shaft 110 (i, j) The magnitude of the
output displacement corresponds to each heating shaft 2a (i. j) depends on the amount of energy
supplied to it. For example, if the voltage is fixed, the energization time can be controlled by the
amount of data to the timer corresponding to each. As apparent from the configuration of the
output system described above, the arithmetic unit 11 of FIG. 1 selects the output shaft 110 to be
output according to the address information in the X and Y axis directions inputted from the
input unit 200, An operation is performed to determine drive energy (drive time or drive power,
etc.) of each heating element of output shaft 110 according to level information (information
related to the Z-axis direction) corresponding to the height of 203, and The controller 12
performs actual heating element driving according to the given selection information of the
output shaft 110 and the information on the driving energy.
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Next, the operation in the above configuration will be described with reference to the flowchart
of FIG. FIG. 4 (A) shows a control program of the arithmetic unit 11 of FIG. 1, and the procedure
shown is stored in the ROM 11a connected to the arithmetic unit 11. Here, as shown in FIG. 4 (B),
an input area having a coordinate range of (0, 0) to (m, n) is set, and an output axis 110
corresponding to the coordinate (i, j) is set. It is assumed that the drive condition of the heating
element 2a is determined according to the Z coordinate read by the Z-encode 204. The human
output is started by pressing the reset button 102. As a result, first, in step Sl in FIG. 4A, the
addresses of X and Y are made to correspond to the numbers i and j in the row and column
directions of the output shaft 110, and then in step S2 the output value of the Z encoder 204
Further, in step S3, the current application time T to the heating element 2a of the output shaft
110 corresponding to the position (i, j) is determined. In steps 84 to S6, the XY table 202 is
moved in the X direction by a distance corresponding to the predetermined resolution by a motor
(not shown). The amount of movement at this time is controlled by closed loop control. That is,
after moving the XY table 202 in step S4, the amount of movement in the X direction is detected
by an encoder provided inside the xY table 202 in step S5, and then a movement of a
predetermined amount is performed in step S6. Determine if. When the movement in the X-axis
direction is completed, the height of the object 205 in the X-axis direction is detected by the 2
encoder 204 in step S7. In step S8, the driving time T of the heating element of the output shaft
110 corresponding to the row and column (i, j) corresponding to the X, Y coordinates currently
being read is determined. In step S9, the output of the X encoder of the XY table 202 is read, and
this value is compared with a predetermined value m in step S10 to determine whether a scan of
a predetermined distance in the X-axis direction has been performed. If the step SIO is negative,
the process returns to the step S4 to repeat the above operation. If step 510 is affirmed, the
process moves to step Sll, and the XY table 202 is moved to the next scan line. That is, the XY
table 202 is moved in the Y-axis direction by an amount corresponding to the predetermined
resolution. At this time, closed-loop control may be performed using an encoder as in the X-axis
direction. In step 512, it is determined whether or not scanning of a predetermined distance (n)
has been performed in the Y-axis direction, and if the step is negated, control from step S4 is
repeated.
As described above, each timer data is set according to the Z encoder input when (j + 1.j) (j + 2.j)...
Changes. When the coordinates reach (m, j), the X and Y motors are driven, and similarly
scanning is performed from (i, j + 1) to obtain 2 data, and when the X and Y coordinates reach
(m, n), input Stop. Thus, the input three-dimensional coordinate data is associated with the output
data. The output processing by the output shaft 110 may be sequential during the above
scanning, or once the data corresponding to each address (i, j) is once stored in the memory, all
output shaft groups are collectively processed. Simultaneous mode switching may be performed
simultaneously or in this case, the mode switching of the sequential / -in this case may be
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switched by the changeover switch 104, and as described above, the initial position setting of the
output shaft 110 (i, j) is reset. The operation is performed by operating the button 102 and
driving the control plate 4 of each output shaft group via an interlocking mechanism (not
shown). According to the above embodiment, since the liquid in the pressure chamber is heated,
and the output means is arranged in the form of a matrix to arrange the actuators for lightening
the pressure change in the pressure chamber and displacing the output shaft, three dimensional
information is output. It is possible to output multi-level three-dimensional information by a large
displacement amount of the actuator output shaft, and a quiet three-dimensional information
processing apparatus can be provided. Further, as in the above embodiment, the read threedimensional information can be output by combining it with means for inputting threedimensional information related to the shape of the object. In the above, the input for reading the
shape of the object Although the apparatus has been illustrated, it goes without saying that the
output apparatus of the present invention can also be used to output three-dimensional
information input through a medium such as a magnetic disk or a communication line. [Effects of
the Invention] As apparent from the above, according to the present invention, a pressure
chamber provided in the outer shell of the apparatus and filled with a predetermined liquid, and
control means for communicating or interrupting the inside of the pressure chamber with the
atmosphere A heating unit for heating the liquid in the pressure chamber, and an output shaft for
generating a mechanical displacement amount according to the pressure in the pressure
chamber, wherein the control unit shuts off the pressure chamber from the atmosphere The
output shaft is made to project from the apparatus outer shell by heating the liquid by the
heating means and increasing the pressure in the pressure chamber, while the control chamber
brings the inside of the pressure chamber into communication with the atmosphere to make the
output shaft Since the actuator arranged to return to the initial position is arranged in a matrix
and has a means for outputting tactile three-dimensional information by the tip of the output
shaft, displacement control is generated by pressure control. Output means, which can obtain a
variable amount of displacement that is larger than that of a piezoelectric element, etc., and can
use a displacement amount expansion mechanism etc. There are excellent effects such as being
able to operate.
[0002]
Brief description of the drawings
[0003]
1 is a block diagram showing the configuration of a three-dimensional information processing
apparatus adopting the present invention, FIG. 2 is an explanatory view showing the appearance
of the apparatus of FIG. 1, and FIG. 3 (A) is an apparatus of FIG. 3 (B) is a cross-sectional view
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taken along line a-a 'of FIG. 3 (A), and FIG. 3 (C) is a sectional view of the static pressure actuator
of the apparatus of FIG. A side view, FIG. 4 (A) is a flow chart showing a cashed sheet of the
apparatus of FIG. 1, and FIG. 4 (B) is an explanatory view showing the correspondence between
input and output data.
1--Upper structure 2--Base 2a--Heating element 3--Structure 3a--Recess 4--Control plate 3b-3d,
4b-4d--Hole 5--Guide Members 6: Guide members 8.9 · · · Springs ll · · · · · · · · · · · · · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · output device O1, 201housing 02 · · · · reset button 03 ... cable ... Mode switch lO ... Output shaft 202-... xy table 03-...
Arm 204 ... Z encoder 05 ... Object □ X in / out n 翳 翳 牛 也 也 也 、 吃, 吃40 (A) (1,) (m, n) M &
1 + 〒 of λ 4 seven-child フ, (氾 口 5 five points (B)
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