WO2005090922A1 - 位置検出器および被検出体 - Google Patents
位置検出器および被検出体 Download PDFInfo
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- WO2005090922A1 WO2005090922A1 PCT/JP2004/013557 JP2004013557W WO2005090922A1 WO 2005090922 A1 WO2005090922 A1 WO 2005090922A1 JP 2004013557 W JP2004013557 W JP 2004013557W WO 2005090922 A1 WO2005090922 A1 WO 2005090922A1
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- 238000001514 detection method Methods 0.000 claims abstract description 74
- 239000003086 colorant Substances 0.000 claims description 40
- 238000000926 separation method Methods 0.000 claims description 6
- 230000005284 excitation Effects 0.000 claims description 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 2
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 238000001228 spectrum Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 25
- 238000000034 method Methods 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001028 reflection method Methods 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
- G01D5/3473—Circular or rotary encoders
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
- G01D5/34776—Absolute encoders with analogue or digital scales
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D2205/00—Indexing scheme relating to details of means for transferring or converting the output of a sensing member
- G01D2205/90—Two-dimensional encoders, i.e. having one or two codes extending in two directions
Definitions
- the present invention relates to a position detector and an object to be detected, and in particular, enables detection of an absolute angle of a rotating object, an absolute position on an XY plane, etc., thereby facilitating assembly, miniaturizing the apparatus, and reducing costs.
- the present invention relates to a novel position detector and an object to be detected.
- FIGS. 12 (a) to 12 (c) are explanatory diagrams showing an example of a strong absolute angle detection method in the related art.
- (a) is a side view of the main part of the encoder
- (b) is a plan view of the disk of the absolute encoder
- (c) is an enlarged view of a portion A in (b).
- a binary n-bit code power is formed on an absolute position detection disk 61 by a slit S and a pattern 62 coded for each angle is formed.
- a one-turn detection pattern 69 for detecting the origin is provided.
- the formation of a pattern coded for each angle is performed using a considerably advanced manufacturing technique.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2001-215239. "Rotating body detection device”. Abstract, claims, Figure 3.
- Patent Document 2 JP-A-1-277704. "Rotary shaft displacement detector”. Summary, Scope of Patent Claim, Figure 1.
- the problem to be solved by the present invention is to make it possible to detect the absolute angle of a rotating object, the absolute position on the XY plane, and the like by a simpler configuration and an easier method, except for the above-described problems of the conventional technology.
- Another object of the present invention is to provide a position detector and an object to be detected which enable easy assembling, miniaturization, and cost reduction of the device.
- the object to be tested such as a rotating body is configured to be able to reflect electromagnetic waves having a wavelength that continuously changes depending on the position, and the like.
- the invention claimed or disclosed at least as a means for solving the above-mentioned problem is as follows.
- a position detector comprising a sensor, wherein the pattern is formed in a gradation form so as to be capable of continuously transmitting electromagnetic waves having different wavelengths depending on the position on the object to be detected to the sensor side.
- a position detector characterized in that it is formed in a position detector.
- the sensor has a wavelength separation unit such as a vector spectroscope or a primary color filter for separating the electromagnetic wave from the object to be detected into each wavelength, and based on the wavelength obtained by the separation.
- a wavelength separation unit such as a vector spectroscope or a primary color filter for separating the electromagnetic wave from the object to be detected into each wavelength, and based on the wavelength obtained by the separation.
- the object to be detected has a disk shape so that position detection in the rotation direction can be performed, and generates electromagnetic waves of different wavelengths to be transmitted to the sensor side in the rotation direction.
- the position detector according to any one of (1) to (3), wherein a pattern is formed, and the rotational position of the object to be detected can be detected by a small configuration.
- the object to be detected has a shape of a parallelogram so that position detection on a coordinate plane can be performed, and generates an electromagnetic wave having a different wavelength to be transmitted to the sensor side in a quadrant thereof.
- the position detector according to any one of (1) to (3), wherein the pattern is formed, and the coordinate position of the object to be detected can be detected by a small configuration.
- the object to be detected has a spherical shape so that position detection on a spherical surface can be performed, and a pattern for generating electromagnetic waves of different wavelengths to be transmitted to the sensor side is formed on the spherical surface.
- the position detector according to any one of (1) to (3), wherein the position detector is formed and is capable of detecting an upper position of a spherical surface of the object to be detected by a small structure.
- the detection object is provided with an origin for position detection by a part of the pattern or by a separately provided pattern, whereby an absolute position can be detected.
- the position detector according to (6) is provided with an origin for position detection by a part of the pattern or by a separately provided pattern, whereby an absolute position can be detected.
- the pattern is composed of a plurality of basic colors provided at different positions on the detected position, and respective colors based on a color mixing ratio of the two, which are continuously arranged between two adjacent basic colors.
- the pattern is formed in a gradation shape by a color or a color that continuously changes depending on a position, and has a disk shape so that position detection in a rotation direction can be performed.
- the pattern is formed in a gradation by a color or a color that continuously changes depending on the position, and has a shape of a parallelogram so that the position on the coordinate plane can be detected.
- the pattern is formed in a gradation shape by a color or a color that continuously changes depending on a position, and has a spherical shape so that position detection on a spherical surface can be performed.
- the object to be detected according to (1) is formed in a gradation shape by a color or a color that continuously changes depending on a position, and has a spherical shape so that position detection on a spherical surface can be performed.
- the pattern is formed in a gradation shape by a color or a color that continuously changes depending on a position, and is in the form of a strip so that position detection in a certain direction can be performed.
- the pattern is formed in a gradation shape by a color or a color that continuously changes depending on a position, and has a cylindrical shape so that position detection in a rotational direction can be performed.
- the position detector and the object to be detected of the present invention are configured as described above, according to this, the absolute angle of the rotating object, the absolute position on the XY plane, and the like can be more easily configured. It can be detected by an easy method. In addition, easy assembly, miniaturization, and cost Can be reduced.
- FIG. 1 is an explanatory diagram showing a basic configuration of a position detector of the present invention.
- FIG. 2 (a) is an explanatory view and a side view of a position detector of the present invention for detecting a rotational position.
- FIG. 2 (b) is an explanatory view of a position detector of the present invention for detecting a rotational position, and is a plan view.
- FIG. 2 (c) is an explanatory diagram of a position detector of the present invention for detecting a rotational position, and is a graph showing an example of a rotational position of an object to be detected and an electromagnetic wave generation state associated therewith.
- FIG. 3 is an explanatory diagram showing a side configuration of the position detector of the present invention for position detection on the XY plane.
- FIG. 4 is an explanatory view showing an example of a method for forming a pattern on a spherical surface according to the position detector of the present invention for detecting a position on a spherical surface.
- FIG. 5 is an explanatory diagram showing an example of a pattern configuration on a detected object for detecting a position on a spherical surface according to another example.
- FIG. 6 is a diagram showing an example of a configuration of an object to be detected of a position detector for detecting a rotational position.
- FIG. 7 is a diagram showing another configuration example of a detected object of a position detector for detecting a rotational position.
- FIG. 8 is a diagram illustrating an example of a configuration of a detected object of a position detector for detecting a ⁇ coordinate plane position
- FIG. 4 is a plan view showing an example of a pattern of a position detector at a position on the flat surface shown in FIG.
- FIG. 9- ⁇ is a diagram showing another configuration example of the detected object of the position detector for detecting the position of the ⁇ coordinate plane.
- FIG. 9- ⁇ is a diagram showing another configuration example of the detected object of the position detector for detecting the position of the ⁇ coordinate plane.
- FIG. 9-C is a diagram showing another configuration example of the detected object of the position detector for detecting the position on the XY coordinate plane.
- FIG. 10 is a diagram showing another configuration example of a detected object of a position detector for detecting a coordinate position in a fixed direction.
- FIG. 11 is a diagram showing an example of a configuration of a detected object of a position detector for detecting a rotational position.
- FIG. 12 (a) is an explanatory view showing an example of a conventional absolute angle detection method, and is a side view of a main part of an encoder.
- FIG. 12 (b) is an explanatory diagram showing an example of a conventional absolute angle detection method, and is a plan view of a disc of an absolute type encoder.
- FIG. 12 (c) is an explanatory view showing an example of a conventional absolute angle detection method, and is an enlarged view of a portion A in FIG. 12 (b).
- FIG. 1 is an explanatory diagram showing a basic configuration of the position detector of the present invention.
- the figures are conceptually structured for ease of explanation. In the following figures, such cases may occur.
- a position detector 10 of the present invention receives an object 1 on which a pattern 2 for generating a position signal is formed, and receives an electromagnetic wave generated on the object 1 by irradiating light. And a sensor 3 for detecting a position signal based on the pattern 2.
- the main configuration of the sensor 2 is that it is formed in a visible or invisible gradation so that electromagnetic waves of different wavelengths can be continuously transmitted to the sensor 3 depending on the position on the detection target 1.
- a light emitting element 4A is provided in the position detector 10 as a part of the sensor 3 or independently of the sensor 3, and as a part of the sensor 3, A light receiving element 5 is provided.
- the pattern 2 receives the light of the light emitting element 4A and reflects an electromagnetic wave having a different wavelength depending on the position of the detection target 1 to the light receiving element 5 forming a part of the sensor 3. Is configured.
- the light emitted from the light-emitting element 4A is reflected by the pattern 2 by virtue of the strong configuration.
- the pattern 2 has a visible or invisible gradation-like configuration. Electromagnetic waves having different wavelengths continuously depending on the position on the detection target 1 are transmitted to the sensor 3 and detected.
- the position of the detection target in the sensor 3 can be detected.
- the absolute position of the object 1 can be easily detected by specifying the specific position of the object 1 in advance based on the wavelength of the electromagnetic wave and storing the information.
- the detected object 1 is shown as a rotating body, but the present invention is not limited to this, and can be used for position detection on the XY plane as described later.
- the surface or the position to be detected whether in the rotational direction position (angle) or the position on the XY plane, is formed into a visible or invisible gradation pattern, so that it can be applied to the pattern. Any method that achieves position-dependent electromagnetic wave generation by light irradiation and obtains position information by detecting the electromagnetic wave is within the scope of the present invention. Therefore, the position detection method of the present invention can be used not only for a plane or a part to be detected but also for a curved surface such as a spherical surface.
- the pattern 2 can transmit electromagnetic waves having different wavelengths continuously depending on the position on the detection target 1” means that the pattern 2 is irradiated from an external light source (4A or the like). In response to this, it generates reflected light or transmitted light, or emits fluorescence or the like excited by fluorescence. At this time, the detected color is detected so that a specific color (visible light) or invisible light is generated at that position. Pattern 2 on body 1 is formed!
- the visible or invisible gradation state means that the pattern 2 generates an electromagnetic wave having a wavelength peculiar to a position due to the irradiation, and the electromagnetic wave is continuously generated along with the position on the detection target 1. It refers to a pattern of strategic change.
- the position detector 10 is provided with a light emitting element 4B which forms a part of the sensor 3 or is independent of the sensor 3, and the sensor 3 receives light as a part thereof.
- a configuration in which the element 5 is provided can also be adopted.
- the pattern 2 receives the light of the light emitting element 4B and transmits an electromagnetic wave having a different wavelength depending on the position of the detection target 1 to the light receiving element 5 which forms a part of the sensor 3. Is configured.
- the light emitted from the light emitting element 4B is transmitted through the pattern 2 due to the powerful structure.
- the visible or invisible gradation-like structure of the pattern 2 causes Electromagnetic waves having different wavelengths continuously depending on the position on the detection target 1 are transmitted to the sensor 3 and detected.
- the position detector 10 is provided with a light emitting element 4A or 4B which forms a part of the sensor 3 or independently of the sensor 3, and the sensor 3 has a part thereof.
- the pattern 2 receives light from the light emitting element 4A or 4B and generates an electromagnetic wave having a different wavelength depending on the position of the detection target 1 by fluorescence excitation or the like.
- the light receiving element 5 forming a part of the sensor 3 may be configured to emit light.
- the light emitted from the light emitting element 4A or 4B also emits fluorescent light in the pattern 2, and at this time, the pattern 2 is visible or invisible.
- electromagnetic waves having different wavelengths are continuously transmitted to the sensor 3 side and detected depending on the position on the detection target 1.
- the sensor 3 has a wavelength separating section for separating the electromagnetic wave from the detection target 1 into each wavelength, and the position is detected based on the wavelength obtained by the separation. It is possible to use a spectrum spectroscope or a primary color filter as the wavelength separation unit.
- FIG. 2 is an explanatory diagram of the position detector of the present invention for detecting a rotational position.
- FIG. 2 (a) is a side view thereof. Also,
- FIG. 2B is a plan view thereof. Also,
- FIG. 2 (c) is a graph showing an example of the rotational position of the object to be detected and the state of electromagnetic wave generation associated therewith.
- the position detector 30 has a disc-like form so that the position of the detection target 31 in the rotation direction can be detected, and the position of the detection target 31 is transmitted to the sensor 33 in the rotation direction.
- the main configuration is that a pattern 32 for generating electromagnetic waves having different wavelengths to be formed is formed.
- the arrangement relationship of the light emitting element and the light receiving element is not limited, and the transmission of the electromagnetic wave from the pattern 32 to the light receiving element of the sensor 33 is not limited to the illustrated reflection method, but also the transmission and the fluorescence. Either method can be used. The same applies to the following examples.
- the position detector 30 in the pattern 32 that has received light from the light emitting element, the pattern 32 is based on a specific pattern provided according to the rotational position of the object 31 to be detected. An electromagnetic wave is generated, transmitted to the sensor 33, and the rotational position of the detection target 31 is detected.
- the position detector for detecting a rotational position according to the present invention can be used in, for example, an encoder.
- the electromagnetic waves transmitted from the object 31 are separated and detected for each wavelength by a wavelength separation unit such as a primary color filter or a spectral prism, and the electromagnetic waves are specified.
- a wavelength separation unit such as a primary color filter or a spectral prism
- information on the rotational position specified by the electromagnetic wave can be obtained.
- the arrangement position of the sensor 33 with respect to the detection object 31 does not require the accuracy as in the past, and can be installed in a rough manner. And cost reduction is possible.
- FIG. 3 is an explanatory diagram showing a side configuration of the position detector of the present invention for detecting a position on the XY plane.
- the position detector 20 has a parallelogram shape so that the position of the object 11 to be detected on the coordinate plane can be detected.
- a pattern 12 for generating electromagnetic waves having different wavelengths to be transmitted to the side is formed.
- the shape of the parallelogram includes a rectangle, a square, and a rhyme.
- a reflective type 14A, a transmissive type 14B, or a fluorescent excitation type can be used as appropriate.
- the position detector 20 in the pattern 12 that has received light from the light emitting element, the position of the object 11 in the XY direction (+ X, + Y, 1X, 1 ⁇ ) An electromagnetic wave is generated based on a specific pattern provided according to the above, is transmitted to the sensor 13, and the coordinate position of the detection target 11 is detected.
- the position detector for detecting a position on a plane according to the present invention can be used, for example, for a table or the like.
- FIG. 4 is an explanatory diagram showing an example of a method of forming a pattern on a spherical surface according to the position detector of the present invention for detecting a position on a spherical surface.
- FIG. 5 is an explanatory diagram showing an example of a pattern configuration on a detected object for detecting a position on a spherical surface according to another example.
- (A), (b)-(d), and (e) are examples observed from the upper surface direction, the three side surface directions, and the lower surface direction, respectively.
- the detection object 201 has a spherical shape so that position detection on a spherical surface can be performed, and a pattern 202 for generating electromagnetic waves of different wavelengths to be transmitted to the sensor side on the spherical surface. Is formed, so that the upper position of the spherical surface of the detection target 201 can be detected by a strong configuration.
- a pattern that continuously changes hue, saturation, and / or intensity on the spherical surface in the equator (latitude) or meridian direction is synthesized to form the pattern 202 on the spherical surface.
- the pattern 202 which receives light from the light emitting element has a strong configuration based on a specific pattern 202 provided according to the spherical position of the object 201 to be detected.
- an electromagnetic wave is generated and transmitted to the sensor (not shown), and the position of the object 201 on the spherical surface is detected.
- the position detector for detecting a position on a spherical surface according to the present invention can be used, for example, in controlling joint motion in the field of robots.
- an origin for position detection can be provided on the object to be detected by a part of the pattern or by a separately provided pattern. This makes it easier to detect the absolute position.
- the position detector 30 of the present invention forms the pattern 32 with a color that continuously changes depending on the position. I can do it. Further, the pattern 32 can be formed by a color that continuously changes depending on the position.
- the present invention is not limited to this drawing, and is used for detecting the position on the XY plane, the position on the spherical surface, the coordinate position in a certain direction, the rotational position on the outer periphery of the cylinder, and other positions as described above. Needless to say, this can also be applied.
- the pattern 32 is continuously arranged between a plurality of basic colors provided at different positions 3201, 3202, and 3203 on the detected position and two adjacent basic colors. Then, each color can be configured based on the color mixture ratio of the two.
- the present invention is not limited to this figure, and may be used to detect the position on the XY plane, the position on the spherical surface, the coordinate position in a certain direction, the rotational position on the outer periphery of the cylinder, and other position detection as described later. It goes without saying that it can be applied.
- a color that continuously changes depending on the position is a single color as a hue, and a change caused by continuous color mixture between the pure color and the gray, that is, a color having a continuously different saturation.
- Groups can be used.
- a hue it is possible to use a single color, a change caused by continuous color mixture between the pure color and white, and the pure color and black, that is, a color group having continuously different lightness.
- a pattern of a mixed color of two different hues or a mixed color of three or more hues can be used.
- the graph in Fig. 2 (c) shows the peaks 3201, 3202, and 3203 in Fig. 2 (b), red (R), green (G), and blue.
- the basic colors may be two or more primary colors, and further, three primary colors of color light, red (R) 'green (G) ⁇ blue (B), or Cyan (C), yellow (Y), and magenta (M), which are the three primary colors of the colorant, can be used.
- FIG. 6 is a diagram showing an example of a configuration of a detected object of a position detector for detecting a rotational position.
- the detection target 41 has a disk-like shape in which the pattern 42 is formed in a gradation by a color or color that continuously changes depending on the position, and the position in the rotation direction is detected.
- a configuration may be used. That is, the detection target 41 of the present invention can be provided with different colors that change continuously in the rotation direction, and by detecting each color, position information specified by each color can be obtained. For example, basic colors such as three primary colors of color light and colorants can be arranged at circumferential positions divided at intervals of 120 ° or the like, and a gradation pattern between them can be formed.
- FIG. 7 is a diagram showing another configuration example of the detected object of the position detector for detecting the rotational position.
- the detected object 411 can be provided with two types of patterns 412 and 422 concentrically on a disk.
- one of the patterns is a pattern as shown in FIG. 6 (412), and a different pattern 422 is provided on the inside, for example, a pattern having a different chromaticity from the pattern 412 at the same angular position, or in addition, A pattern in which adjacent colors are not discontinuous in at least one of lightness, saturation, and hue instead of gradation is possible.
- it is possible to detect a plurality of types of angular positions.
- FIG. 8 is a diagram showing an example of the configuration of a detected object of the position detector for detecting the position on the XY coordinate plane, and is a plan view showing an example of a pattern of the position detector at the position on the XY plane shown in FIG. is there.
- the detection target 21 has a pattern in which the pattern 22 is formed in a gradation with a color or a color that changes continuously depending on the position, and a parallelogram is formed so that the position on the coordinate plane can be detected. Configuration can be adopted.
- the appropriate position of the pattern 22 (the peaks 2201, 2202, 2203) By setting, a gradation pattern can be formed.
- FIGS. 9A, 9B, and 9C are diagrams each showing another configuration example of the detected object of the position detector for detecting the position on the XY coordinate plane.
- the detected objects 251—A, 251B, and 251—C have patterns (252—A, 252—) in which three basic colors are used and arranged at appropriate positions on the XY plane. B).
- a pattern (252-C) in which the hue is arranged in the left and right direction and the saturation or the intensity or both are arranged in the up and down direction can be used.
- the pattern is formed in a gradation by a color or a color that continuously changes depending on the position, and the position on the spherical surface can be detected. It may be of a spherical shape to be made.
- FIG. 10 is a diagram showing another configuration example of the detected object of the position detector for detecting the coordinate position in a certain direction.
- the detection object 261-A and the like have the pattern 262-A and the like formed in a gradation with a color or color that continuously changes depending on the position, so that the position in a certain direction can be detected.
- a configuration in the form of a band can be adopted.
- a pattern (262-A, 262-A, 262-A, 262-A, 262-A, — B, 262—C).
- a pattern with two basic colors (262-D, 262-E) can be used.
- As a method of arranging the basic colors when three colors are used, for example, it is possible to appropriately arrange the same basic color at both ends of the band and other two colors therein. In the case where two colors are used, the same applies to the case where basic colors are arranged at both ends.
- FIG. 11 is a diagram showing an example of a configuration of a detected object of a position detector for detecting a rotational position.
- the object to be detected 271 has a color in which the pattern 272 changes continuously depending on the position. Alternatively, it may be formed in a gradation shape by color, and may be in a cylindrical shape for detecting a position in the rotation direction. In the figure, two patterns are formed.
- the color arrangement method can be configured, for example, in the same manner as the above-described disk-shaped object to be detected.
- the object to be detected 271 can be provided, for example, on a motor shaft and used for detecting the rotational position of the motor.
- the position detector and the object to be detected according to the present invention are configured as described above, according to this, the absolute angle of the rotating object, the absolute position on the XY plane, and the like can be determined with a simpler configuration and a simpler method. Can be detected by In addition, it is possible to easily assemble the device, reduce the size, and reduce the cost. Therefore, it is an invention with high industrial value, especially in the FA and OA fields.
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Abstract
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04773203A EP1729095A4 (en) | 2004-03-22 | 2004-09-16 | POSITION DETECTOR AND OBJECT TO BE DETECTED |
US10/593,203 US7952065B2 (en) | 2004-03-22 | 2004-09-16 | Position detector and a detected element having a pattern for generating a position signal formed thereon |
Applications Claiming Priority (4)
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JP2004083540 | 2004-03-22 | ||
JP2004-083540 | 2004-03-22 | ||
JP2004-218265 | 2004-07-27 | ||
JP2004218265A JP4876233B2 (ja) | 2004-03-22 | 2004-07-27 | 位置検出器および被検出体 |
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WO2005090922A1 true WO2005090922A1 (ja) | 2005-09-29 |
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PCT/JP2004/013557 WO2005090922A1 (ja) | 2004-03-22 | 2004-09-16 | 位置検出器および被検出体 |
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US (1) | US7952065B2 (ja) |
EP (1) | EP1729095A4 (ja) |
JP (1) | JP4876233B2 (ja) |
WO (1) | WO2005090922A1 (ja) |
Families Citing this family (16)
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JP4772540B2 (ja) * | 2006-03-10 | 2011-09-14 | 株式会社東芝 | 超音波診断装置 |
DE102006014361B3 (de) * | 2006-03-28 | 2007-05-31 | Rsg Rombold System Gmbh & Co. Kg | Vorrichtung und Verfahren zur Überwachung eines auf einer Fadenspule aufgewickelten Fadens |
JP2008140077A (ja) | 2006-11-30 | 2008-06-19 | Tamagawa Seiki Co Ltd | 球体の絶対角度検出システム、球体アクチュエータおよびポインティングデバイス |
JP5131177B2 (ja) * | 2008-12-15 | 2013-01-30 | パナソニック株式会社 | 光学式角度センサ |
JP5796295B2 (ja) * | 2011-01-19 | 2015-10-21 | 株式会社大林組 | 変位計測装置 |
KR101903743B1 (ko) * | 2012-05-22 | 2018-10-04 | 삼성디스플레이 주식회사 | 표시 장치, 표시 장치의 캘리브레이션 방법, 및 표시 장치의 표시 방법 |
JP6292759B2 (ja) * | 2013-03-12 | 2018-03-14 | 住友重機械工業株式会社 | マークセンサ及び光検出素子によるマーク判定方法 |
JP6279935B2 (ja) * | 2014-03-05 | 2018-02-14 | 大成建設株式会社 | 変位計測装置 |
KR101997558B1 (ko) * | 2017-05-12 | 2019-07-09 | 국방과학연구소 | 유무인 시스템의 구동기 절대위치 인식장치 및 방법 |
CN108279032B (zh) * | 2018-01-17 | 2023-09-15 | 歌尔科技有限公司 | 一种产品性能测试方法和系统 |
CN113439318A (zh) * | 2019-02-18 | 2021-09-24 | Ls电气株式会社 | 真空断路器用触头监测装置及包括该装置的真空断路器 |
KR102186756B1 (ko) * | 2019-02-18 | 2020-12-04 | 엘에스일렉트릭(주) | 진공차단기용 접점 감시 장치 및 이를 갖는 진공차단기 |
KR102169247B1 (ko) * | 2019-04-05 | 2020-10-23 | 엘에스일렉트릭(주) | 진공차단기용 접점 감시 장치 및 그에 따른 보정 방법 |
CN113711326A (zh) | 2019-04-05 | 2021-11-26 | Ls电气株式会社 | 真空断路器用触点监控装置以及该触点监控装置的补正方法 |
EP3964133A1 (en) * | 2020-09-04 | 2022-03-09 | Agfa Nv | Method and system for encoding a surface position of an x-ray positioning device |
DE102022209227A1 (de) | 2022-09-06 | 2024-03-07 | Siemens Healthcare Gmbh | Positionsbestimmungssystem, medizinisches Bildgebungssystem, Verfahren zur Positionsbestimmung und Referenzanordnung |
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- 2004-07-27 JP JP2004218265A patent/JP4876233B2/ja not_active Expired - Fee Related
- 2004-09-16 US US10/593,203 patent/US7952065B2/en not_active Expired - Fee Related
- 2004-09-16 WO PCT/JP2004/013557 patent/WO2005090922A1/ja active Application Filing
- 2004-09-16 EP EP04773203A patent/EP1729095A4/en not_active Withdrawn
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Also Published As
Publication number | Publication date |
---|---|
US20080232215A1 (en) | 2008-09-25 |
JP4876233B2 (ja) | 2012-02-15 |
EP1729095A1 (en) | 2006-12-06 |
US7952065B2 (en) | 2011-05-31 |
JP2005308706A (ja) | 2005-11-04 |
EP1729095A4 (en) | 2007-11-14 |
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