JPS6157812A - Displacement transducer - Google Patents
Displacement transducerInfo
- Publication number
- JPS6157812A JPS6157812A JP18004584A JP18004584A JPS6157812A JP S6157812 A JPS6157812 A JP S6157812A JP 18004584 A JP18004584 A JP 18004584A JP 18004584 A JP18004584 A JP 18004584A JP S6157812 A JPS6157812 A JP S6157812A
- Authority
- JP
- Japan
- Prior art keywords
- light
- displacement
- ccd1
- emission source
- photoreceptor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 21
- 108091008695 photoreceptors Proteins 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000012886 linear function Methods 0.000 abstract description 4
- 101000857682 Homo sapiens Runt-related transcription factor 2 Proteins 0.000 abstract 4
- 102100025368 Runt-related transcription factor 2 Human genes 0.000 abstract 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Transform (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は可動体の変位をデジタル量で読み俄る変位変換
器に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a displacement transducer that can read the displacement of a movable body in digital quantities.
従来、この種の変位変換器は、例えば特公昭５５−４７
６８１号公報に示される装置があった。Conventionally, this type of displacement transducer has been developed, for example, by Japanese Patent Publication No. 55-47.
There was a device shown in Publication No. 681.
・二の装置４才可動体に光ダイオード列から成るセン（
トーアレーを設けこのセンサーアレーに照射される光に
よってその位置を検出するものであるが、その検出範囲
を拡げるため該検出素子の走査線上に複数個の発光ｌ／
Ｉ；を並べこの発光源を順次０Ｎ−０ドＦ制御すること
により、変位量をデジタル量で検出するものである。・The second device consists of a 4-year-old movable body and an array of photodiodes (
A toe array is provided and its position is detected by the light irradiated to this sensor array, but in order to expand the detection range, a plurality of light emitting lights are placed on the scanning line of the detection element.
The displacement amount is detected as a digital amount by arranging the light emitting sources and sequentially controlling the light emitting sources from 0N to 0F.
前記装置は、このような構成を有しているので、以下に
示す欠点を有していた。Since the device had such a configuration, it had the following drawbacks.
すなわち、
１、必要ｌ【粘度（分解能）を達成するためにはそれぞ
れの構成部品の加工精度が高度に要求されるとともに、
複雑な構成を有している。In other words, 1. In order to achieve the required viscosity (resolution), a high degree of processing accuracy is required for each component, and
It has a complicated structure.
２、発光源のスキャンニングが必要であるとともに光ダ
イオード列など電気構成も複雑である。2. Scanning of the light emitting source is required, and the electrical configuration such as a photodiode array is also complicated.
本発明はこれらの欠点を除去するためになされたちので
ある。The present invention has been made to eliminate these drawbacks.
この目的を達成するため本発明においては被照射範囲の
大きさにより出力が変化するＣＣＤのような受光体と、
この受光体と対を成すとともにこの受光体全面を照射す
る発光源と、この受光体と発光源との間に所望の関数形
で出力が得られるように前記発光源の光を遮１１Ｊ［す
る遮光板を設け、例えば受光体および発）に源を固定し
、遮光板を可動体に結合することにより変位量をデジタ
ルで検出するものである。In order to achieve this purpose, the present invention uses a photoreceptor such as a CCD whose output changes depending on the size of the irradiated area;
A light emitting source is paired with the photoreceptor and illuminates the entire surface of the photoreceptor, and the light from the light emitting source is blocked by 11J[] so that output is obtained in a desired functional form between the photoreceptor and the light emitting source. A light shielding plate is provided, a source is fixed to, for example, a light receiving body and a light emitter, and the displacement amount is digitally detected by connecting the light shielding plate to a movable body.
また、遮光板を区画的に複数個ならべることにより長い
範囲での変位検出を可能にする。Furthermore, by arranging a plurality of light shielding plates in sections, it is possible to detect displacement over a long range.
可動体に連結した遮光板の動きにより、発光源の光を受
ける受光体の被照射範囲が変化する。この受光体の出力
より変位けがデジタル量で検出できる。The movement of the light shielding plate connected to the movable body changes the irradiated range of the photoreceptor that receives the light from the light emitting source. Displacement can be detected in digital quantities from the output of this photoreceptor.
第１図は本発明の原理を示す模式的構成図、第２図は遮
光板の他の実施例を示す正面図、第３図は本発明の応用
例を示す構成図である。FIG. 1 is a schematic block diagram showing the principle of the present invention, FIG. 2 is a front view showing another embodiment of the light shielding plate, and FIG. 3 is a block diagram showing an application example of the present invention.
第１図において、１は受光体を形成するＣＯＤ、２は発
光ダイオードから成る発光源、３は取付台、４Ｇ才遮光
１反である。In FIG. 1, 1 is a COD forming a photoreceptor, 2 is a light emitting source consisting of a light emitting diode, 3 is a mounting base, and 4G is a light shield.
ＣＣＤ１と発光源２は、発光源２からの光がＣＣＤ １
の全面にわたって照射されるように対を成して取付台３
に取り付けられる。遮光Ｆｊ、４は図示してはいないが
可動体と結合しており、変位量ｒの動きにともなって矢
印方向に移動する。第１図に示すｉｌｉ光板４は三角形
の形状を有し、したがってその作用１！、−４１＋；ｌ
： １次関数形に形成されている。Ｃ，（： ｒ）１と
遮光板４との位置関係し１′可動体のＭ点４−初期位置
とするよう配置するのが望ましい。CCD 1 and light emitting source 2 are arranged so that the light from light emitting source 2
Mounting bases 3 are arranged in pairs so that the entire surface of the area is irradiated.
can be attached to. Although not shown, the light shielding Fj, 4 is connected to a movable body, and moves in the direction of the arrow as the displacement amount r moves. The ili light plate 4 shown in FIG. 1 has a triangular shape and therefore its function 1! , -41+;l
: It is formed in the form of a linear function. It is desirable that the positional relationship between C, (: r) 1 and the light shielding plate 4 is such that the 1' movable body is positioned at point M 4 - the initial position.
この、１−）に可動体が移動すると、遮光板４も移−Ｉ
ｉＪｌする。遮光４）２４の移動によりＣＣＤ ］に照
射される光ム、１、作用片４１の形状に応して遮られる
。When the movable body moves to 1-), the light shielding plate 4 also moves to 1-).
iJl. Light shielding 4) The light beam irradiated onto the CCD by the movement of the light beam 24 is shielded according to the shape of the working piece 41.
このＣＣＤ ］の出力は変位量を表わずデジタルＩ、Ｊ
として出力される。The output of this CCD] does not represent the amount of displacement, but is digital I, J.
is output as
第２図は可動体が１に較的長い移動距離を有する場合の
）庶光扱４の１例を示している。第２図に示した装置で
は、可ＩＩＯ＋体はＣＣＤ Ｉと結合している。FIG. 2 shows an example of general light handling (4) in which the movable body has a relatively long movement distance. In the device shown in FIG. 2, the IIO+ body is coupled to CCD I.
なお、本図では発光源３は省略され°ζいる。Note that the light emitting source 3 is omitted in this figure.
第２図に示された遮光板４は区画的に区分された作用片
４１を複数個有している。さらにこの作用片４１が第何
番目のものかを識別するための記号（この実施例におい
ては溝４２）がその下辺部に設けられている。従って、
長い範囲にわたって可動体に結合されたＣＣＤ １が移
動することにより変位の絶対量がデジタル量で検出でき
る。The light shielding plate 4 shown in FIG. 2 has a plurality of functional pieces 41 that are sectioned. Further, a symbol (in this embodiment, a groove 42) for identifying the number of the operating piece 41 is provided on its lower side. Therefore,
By moving the CCD 1 coupled to the movable body over a long range, the absolute amount of displacement can be detected as a digital amount.
なお、本明細書実施例においては遮光板４の作用片４１
が１次関数形のものについて述べたが、このように１次
関数形のものでなく例えば対数形などの特殊な関数形に
形成すれば、それに応した出力が得られる。In addition, in the embodiment of this specification, the working piece 41 of the light shielding plate 4
Although the above description has been made regarding a linear function type, if it is formed into a special function form such as a logarithmic form instead of a linear function type, a corresponding output can be obtained.
第３図は回転検出器に応用したものであるがその動作は
ほぼ同様である。図において５は回転軸である。Although FIG. 3 shows an application to a rotation detector, its operation is almost the same. In the figure, 5 is a rotation axis.
１２月−１説明したように本発明によれば、構成が筒中
で安価に実現できる。December-1 As explained, according to the present invention, the configuration can be realized in a cylinder at low cost.
第１図、第２図および第３図は本発明の実施例を示す構
成説明図である。
１−ＣＣ１〕、２−発光源、４−遮光板、４１−作用片FIG. 1, FIG. 2, and FIG. 3 are configuration explanatory diagrams showing embodiments of the present invention. 1-CC1], 2-light emitting source, 4-shading plate, 41-action piece
Claims (3)
と、この受光体と対を成すとともにこの受光体全面にわ
たって光を照射する発光源と、これら受光体と発光源と
の間に、所望の関数形で出力が得られるように前記発光
源の光を遮断する遮光板とを有し、前記受光体および発
光源と前記遮光板との相対変位により、変位をデジタル
量で検出することを特徴とする変位変換器。(1) A photoreceptor whose output changes depending on the size of the irradiated area, a light emitting source that forms a pair with the photoreceptor and irradiates light over the entire surface of the photoreceptor, and between these photoreceptors and the light emitting source, and a light-shielding plate that blocks light from the light-emitting source so as to obtain an output in a desired functional form, and detecting displacement in digital quantities based on relative displacement between the light-receiving body, the light-emitting source, and the light-shielding plate. A displacement transducer featuring:
したことを特徴とする特許請求の範囲第１項記載の変位
変換器。(2) The displacement transducer according to claim 1, wherein the photoreceptor is formed of a charge coupled device (CCD).
もに、前記各区分には識別のための記号が設けられてい
ることを特徴とする特許請求の範囲第１項記載の変位変
換器。(3) The displacement conversion according to claim 1, wherein the light shielding plate is divided into a plurality of sections, and each section is provided with a symbol for identification. vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18004584A JPS6157812A (en) | 1984-08-29 | 1984-08-29 | Displacement transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18004584A JPS6157812A (en) | 1984-08-29 | 1984-08-29 | Displacement transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6157812A true JPS6157812A (en) | 1986-03-24 |
Family
ID=16076519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18004584A Pending JPS6157812A (en) | 1984-08-29 | 1984-08-29 | Displacement transducer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6157812A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007121277A (en) * | 2005-09-29 | 2007-05-17 | Mitsutoyo Corp | Absolute linear encoder |
-
1984
- 1984-08-29 JP JP18004584A patent/JPS6157812A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007121277A (en) * | 2005-09-29 | 2007-05-17 | Mitsutoyo Corp | Absolute linear encoder |
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