JPH0342517A - Movement state detector - Google Patents
Movement state detectorInfo
- Publication number
- JPH0342517A JPH0342517A JP1177552A JP17755289A JPH0342517A JP H0342517 A JPH0342517 A JP H0342517A JP 1177552 A JP1177552 A JP 1177552A JP 17755289 A JP17755289 A JP 17755289A JP H0342517 A JPH0342517 A JP H0342517A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- frequency
- analog signal
- moving
- filter
- 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
- 238000001514 detection method Methods 0.000 claims description 19
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims 1
- 230000004907 flux Effects 0.000 abstract description 7
- 230000004043 responsiveness Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 241000159846 Centrosema pascuorum Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- SILSDTWXNBZOGF-KUZBFYBWSA-N chembl111058 Chemical compound CCSC(C)CC1CC(O)=C(\C(CC)=N\OC\C=C\Cl)C(=O)C1 SILSDTWXNBZOGF-KUZBFYBWSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
Landscapes
- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Optical Transform (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は移動状態検出装置に関し、特に移動物体の移動
!よや移動速度等の移動状態に関して検出f−段で(り
られたアナログ(5’iを移動物体の移動速度に応じて
適切に43号処理し、高量〕食な検出を可能とした移動
状態検出装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a movement state detection device, and particularly to a movement state detection device for a moving object! Regarding the movement state such as the movement speed, it is possible to detect high-volume movement using analogue (5'i) properly processed according to the movement speed of the moving object. The present invention relates to a state detection device.
(従来の技術)
従来より移動物体の移動qtや移動速度等の移動状態を
検出する装置として光学式のロータリーエンコーダが多
く用いられている。(Prior Art) Optical rotary encoders have conventionally been widely used as devices for detecting moving states such as the movement qt and moving speed of a moving object.
第3図は従来のロータリーエンコーダの要部概略図であ
る。同図において2は回転円板であり円周上に透光部と
遮光部を等間隔に説けたメインスケール2aを有し、回
転軸31に連結されている。3は固定スリットでありメ
インスケール2aと等間隔のインデックススケール3P
Xが設けられている。4は検出−ト段であり光源1から
の光束のうち同転円板2の1111転にイ゛tってメイ
ンスケール2aとインデックススケール3aの透光部を
通過した光束を検出している。5は電流電圧変換【■す
路であり、検出手段4からの光電流を電正に変換してい
る#6は増幅器であり電流電圧変換回路5からの出力f
、;号を増幅している。7は出力端r−である。FIG. 3 is a schematic diagram of the main parts of a conventional rotary encoder. In the figure, reference numeral 2 denotes a rotating disk, which has a main scale 2a having light-transmitting parts and light-blocking parts arranged at equal intervals on its circumference, and is connected to a rotating shaft 31. 3 is a fixed slit, which is an index scale 3P equally spaced from the main scale 2a.
An X is provided. Reference numeral 4 denotes a detection stage which detects, among the light fluxes from the light source 1, the light fluxes that have passed through the transparent portions of the main scale 2a and the index scale 3a during the 1111 rotation of the rotary disk 2. 5 is a current-voltage conversion circuit [■], and #6 is an amplifier that converts the photocurrent from the detection means 4 into a positive voltage, and the output f from the current-voltage conversion circuit 5.
, ;The number is amplified. 7 is the output terminal r-.
同図のロータリーエンコーダは出力端子7からの出力信
号を解析して回転物体2の同転咀や同転速度を求めてい
る。The rotary encoder shown in the figure analyzes the output signal from the output terminal 7 to determine the rotational force and rotational speed of the rotating object 2.
ロータリーエンコーダはIE’1転物体転向体速度が大
きくなると出力信号の周波数が高くなるので、一般には
汎用性を持たせるhに内部の電流電圧変換回路5や増幅
器6における周波数特性は出来るだけ高くまで伸ばすよ
うに設定されている。特に最近では角度分解能をより高
める為に1回転当りの信号散(パルス数)の大きなもの
が要望されており、より高周波応答性が良くなるように
設定されている。In a rotary encoder, the frequency of the output signal increases as the speed of the IE'1 rolling object increases, so in general, the frequency characteristics of the internal current-voltage conversion circuit 5 and amplifier 6 are set to be as high as possible in order to provide versatility. It is set to extend. In particular, recently there has been a demand for a large signal dispersion (number of pulses) per revolution in order to further improve the angular resolution, and the setting is made to have better high frequency response.
(発明が解決しようとする問題点)
般に低速回転物体から高速回転物体まで広い範囲におけ
る回転暖の検出を可能とする為に(3号処理回路の周波
数帯域幅を広く設定すると次のような問題が発生してく
る。(Problems to be Solved by the Invention) In general, in order to make it possible to detect rotational heat in a wide range from low-speed rotating objects to high-speed rotating objects (if the frequency bandwidth of the No. 3 processing circuit is set wide, the following Problems arise.
(イ)増幅系の熱雑音は周波数帯域幅が広い稈大きくな
る八、(、’、 +;の対雑1゛?比(S / N比)
が竪・、くなってくる。(b) Thermal noise of the amplification system becomes larger when the frequency bandwidth is wide.
becomes vertical.
(ロ)パルス状の外米雑H−’5に対しても増幅能力を
右する為、外来雑?1が信号に付加されやすくなる。(b) Since the amplification ability is also affected by the pulsed foreign rice miscellaneous H-'5, is it foreign miscellaneous? 1 is more likely to be added to the signal.
この為、ロータリーエンコーダとして最大応答周波数は
実際に使用される最大周波数より極端に高くない方が良
く、例えば比較的低速な同転物体を対象とする場合には
高周波数対応化は、むしろ逆効果になってくる。For this reason, it is better for the maximum response frequency of a rotary encoder to not be extremely higher than the maximum frequency actually used. For example, when targeting a relatively slow co-rotating object, making it compatible with high frequencies may have the opposite effect. It becomes.
しかしながら前述の如く最近のロータリーエンコーダは
低速から高速までの同転数が検出できるように汎用性を
持たせるように周波数帯域幅をなるべく拡〈設定してい
る為に低速同転物体の速度制御を行う場合にはS/N比
が悪くなり高精度な速度1り御が難しくなってくるとい
う問題点があった。However, as mentioned above, recent rotary encoders have widened the frequency bandwidth as much as possible to provide versatility so that they can detect co-rotating numbers from low speeds to high speeds, so they are not suitable for speed control of low-speed co-rotating objects. If this is done, there is a problem in that the S/N ratio deteriorates and it becomes difficult to control the speed with high precision.
本発明は移動物体の移動速度に応じて最適な周波数帯域
幅を設定することにより移動物体の速度III v4や
移動状態の検出を高も1度に行うことのできる移動状態
検出装置の提供を目的とする。An object of the present invention is to provide a moving state detection device that can detect the speed III v4 and moving state of a moving object at once by setting an optimal frequency bandwidth according to the moving speed of the moving object. shall be.
(問題点を解決する為の手段)
本発明の移動状態検出装置は移動物体の移動戦や移動速
度に基づいたアナログ(3号を検出する検71 f′、
段と、該アナログ信号のうち所定の周波数帯域幅のアナ
ログ信号を選択し、通過させるフィルター手段と該フィ
ルタート段を通過させるアナログ信号の周波数帯域幅を
該移動物体の移動速度に応じて選択する選択手段とを有
し、該フィルタート段からの出力信号を用いて該移動物
体の移動状態を求めるようにしたことを特徴としている
。(Means for Solving the Problems) The movement state detection device of the present invention is based on the movement of a moving object and the movement speed of an analog (Detection No. 71 f',
and selecting an analog signal with a predetermined frequency bandwidth from among the analog signals, and selecting a filter means to pass the analog signal and a frequency bandwidth of the analog signal to pass through the filter stage according to the moving speed of the moving object. The present invention is characterized in that it has a selection means, and the moving state of the moving object is determined using the output signal from the filter stage.
(実施例)
第1図は本発明をロータリーエンコーダに適用したとき
の一実施例の要部概略図である。(Embodiment) FIG. 1 is a schematic diagram of a main part of an embodiment in which the present invention is applied to a rotary encoder.
本実施例は第3図に示す従来のロータリーエンコーダに
比べて電流重圧変換回路5と増幅器6との間に選択手段
10からの信号により所定の周波数帯域幅を選択するよ
うにしたフィルタート段11を設けた構成が大きく異っ
ている。This embodiment differs from the conventional rotary encoder shown in FIG. The configuration of the two systems is very different.
次に第3図の従来のロータリーエンコーダと要素の説明
が重複するが、各要素につき舶次説明する。Next, although the explanation of the elements is the same as that of the conventional rotary encoder shown in FIG. 3, each element will be explained in detail.
2は移動物体としての同転円板であり円周上に透光部と
遮光部を等間隔に設けたメインスケール2aをイ1し、
II+1転軸31に連結されている。3は固定スリット
でありメインスケール2aと等間隔のインデックススケ
ール3aが説けられている。Reference numeral 2 denotes a main scale 2a which is a co-rotating disk as a moving object and has light-transmitting parts and light-shielding parts arranged at equal intervals on the circumference.
It is connected to the II+1 rotating shaft 31. 3 is a fixed slit, and an index scale 3a equidistant from the main scale 2a is shown.
4は検j口手段であり発光ダイオード専の光源lからの
光、束のうち回転円板2の回転に伴ってメインスケール
2aとインデックススケール3aの透光部を通過した光
束を検出している。Reference numeral 4 denotes a detection means which detects light from a light source exclusively for light emitting diodes, and among the light flux that passes through the transparent parts of the main scale 2a and index scale 3a as the rotating disk 2 rotates. .
このとき検出手段4からは光源lからの光束を回転1”
l板2の回転速度に応じた周波数のアナログ信号が出力
される。At this time, the detection means 4 rotates the luminous flux from the light source l by 1"
An analog signal having a frequency corresponding to the rotational speed of the l-plate 2 is output.
検出手段4からのアナログ信号に基づく電流は電流電圧
変換回路5で電圧に変換されフィルター手段11に人力
される。A current based on an analog signal from the detection means 4 is converted into a voltage by a current-voltage conversion circuit 5 and then inputted to a filter means 11 .
フィルター手段11は選択手段!0からの人力信号によ
り1周波数帯域幅が選択されるような特性の後述する構
成のローパスフィルター等から成っている。Filter means 11 is a selection means! It consists of a low-pass filter and the like having a configuration described later and having characteristics such that one frequency bandwidth is selected by a human input signal from zero.
選択手段10は制御信号端子12、l:3をイfしてお
り、該制御信号端−i’−12,13からの人力に応じ
てフィルター4段+1の周波数帯域軸を同転111板2
の同転速度に対応させて選択している。The selection means 10 has a control signal terminal 12, l:3, and in response to the human power from the control signal terminal -i'-12, 13, the frequency band axes of the filters 4 stages + 1 are rotated 111 plates 2.
It is selected according to the same rotation speed.
6は増幅器でありフィルター手段11からの出力信号を
増幅している。7は出力端子であり、増幅器6で増幅さ
れた+01転円板2の回転状態に関するfキリが出力さ
れている。Reference numeral 6 denotes an amplifier which amplifies the output signal from the filter means 11. Reference numeral 7 denotes an output terminal, from which f-kiri related to the rotational state of the +01 inversion disk 2 amplified by the amplifier 6 is outputted.
本実施例では出力端T−7からの出力信号を不図小の信
号処理回路で公知の方法で分析してja41転円板転円
板幅晴や同転速度等の回転状態を検出している。In this embodiment, the output signal from the output terminal T-7 is analyzed by a known method using a small signal processing circuit (not shown) to detect rotational conditions such as the width of the ja41 disc and the rotational speed. There is.
第2図は第1図のフィルター4段11と選択手段10の
一実施例の説明図である。FIG. 2 is an explanatory diagram of an embodiment of the four filter stages 11 and the selection means 10 shown in FIG. 1.
本実施例では回転速度が限定されるような使用方法のと
き(低速時)は、選択手段10からの外部信号により該
フィルター手段が低周波数証域帖の信号のみを選択(通
過)するようにしている。In this embodiment, when the rotation speed is limited (at low speed), the external signal from the selection means 10 causes the filter means to select (pass) only the signal in the low frequency range. ing.
同IKI テ+i制御(、;弓端(−11、l 20)
オン、オー)の組含オつせより全体として4通りの周
波数代域幅を選択するようにしている。Same IKI Te+i control (,; Bow end (-11, l 20)
In total, four frequency range widths are selected from the combinations of (on, o).
即ち制御信号端子11.12によりスイッチ22.23
(例えばMOSアナログスイッチ)を開閉することによ
って形成されるコンデンサーC1,C2と抵抗RI −
114との組合わせにより求められる特定数を切換えて
周波数帯域軸(フィルター4段11のバンドパス特性)
を選択している。That is, the control signal terminals 11.12 cause the switches 22.23 to
Capacitors C1 and C2 formed by opening and closing (e.g. MOS analog switch) and resistance RI −
By switching the specific number obtained in combination with 114, the frequency band axis (bandpass characteristics of 4 filter stages 11)
is selected.
尚、制御信号端子の数は周波数帯域軸の選択数に応じて
2つ以上複数個設けても良い。Note that the number of control signal terminals may be two or more depending on the number of selected frequency band axes.
本実施例ではこのように選択ト段10からの外部人力f
3すにより1回転円板2の使用同転速度に応じてフィル
ター手段+1の周波数帯域軸(バンドパス特性)を選択
し、これにより同転円板2のUI+1転状態全状態度に
検出することができるようにしている。In this embodiment, the external human power f from the selection stage 10 is
3 selects the frequency band axis (bandpass characteristic) of the filter means + 1 according to the used co-rotation speed of the co-rotating disk 2, and thereby detects the UI+1 rotation state of the co-rotating disk 2 in all states. We are making it possible to do so.
尚1本発明においては第1、第2図に、Rす天鉋例の他
1次のような構成が適用i’iJ能である。In the present invention, in addition to the R-shaped plane example shown in FIGS. 1 and 2, the following configurations are also applicable.
(イ)フィルター手段は検出手段から出力端子との間で
あれば、どこに配置して6良い、又、フィルター手段は
例示した構成のフィルターの他に外部人力信号により周
波数特性を変化させることができる6のであればどのよ
うなフィルターであって6良い。(b) The filter means may be placed anywhere between the detection means and the output terminal.Furthermore, the filter means can have its frequency characteristics changed by an external human input signal in addition to the filter with the illustrated configuration. If it is 6, any filter is fine.
(ロ)フィルター4段の機能を他の手段、例えば増幅器
にhだせて構成して6良い。(b) The function of the four stages of filters may be transferred to other means, such as an amplifier.
(ハ)検出ト段からの出力信号は一相に限らず何州であ
って4J良い。(c) The output signal from the detection stage is not limited to one phase, but may be any number of phases, and may be 4J.
(ニ)第1図の構成に波形整形回路を付加して6良い。(d) A waveform shaping circuit may be added to the configuration shown in FIG. 1.
(ホ)同転物体の[i11転状態の検出方性として光学
式の代わりに磁気式を用いて6良い。(E) It is better to use a magnetic method instead of an optical method to detect the [i11 rotation state of a co-rotating object.
(へ)ロータリーエンコーダーの他にリニアエンコーダ
のように直線の移動晴や移動速度に応じて信号が得られ
るものであればどのような装置dにも適用可能である。(f) In addition to rotary encoders, the present invention can be applied to any device d, such as a linear encoder, as long as it can obtain a signal according to linear movement or movement speed.
(発明の効果)
本発明によれば前述のように移動物体の移動速度に応じ
てフィルター手段の周波数帯域幅(バンドパス特性)を
制御することにより、移動速度に最適な周波数応答性を
選択することができ、低連移動物体から高速移動物体に
至る広い範囲の速度の移動物体を高桔度に検出及び制g
4Tることのできる移動状態検出装置を達成することが
できる。(Effects of the Invention) According to the present invention, as described above, by controlling the frequency bandwidth (bandpass characteristic) of the filter means according to the moving speed of the moving object, the optimal frequency response for the moving speed is selected. It is possible to detect and control moving objects in a wide range of speeds, from slow-moving objects to high-speed moving objects, with high accuracy.
A moving state detection device capable of detecting 4T can be achieved.
4 図心の! !11な説明
第1図は本発明をロータリーエンコーダーに適用したと
きの一実施例の要部概略図、笛2図は第1図の一部分の
説明図、第3図は従来のロータリーエンコーダの要部概
略間である。4 Centurion! ! 11. Explanation Fig. 1 is a schematic diagram of the main part of an embodiment when the present invention is applied to a rotary encoder, Fig. 2 is an explanatory diagram of a part of Fig. 1, and Fig. 3 is a main part of a conventional rotary encoder. Approximately in between.
図中1は光源、2は回転円板、3は固型スリット、4は
検出ト段、5は電流電圧変換回路、6は増幅器、7は出
力端子、10は選択手段、11はフィルター手段である
。In the figure, 1 is a light source, 2 is a rotating disk, 3 is a solid slit, 4 is a detection stage, 5 is a current-voltage conversion circuit, 6 is an amplifier, 7 is an output terminal, 10 is a selection means, and 11 is a filter means. be.
Claims (2)
信号を検出する検出手段と、該アナログ信号のうち所定
の周波数帯域幅のアナログ信号を選択し、通過させるフ
ィルター手段と該フィルター手段を通過させるアナログ
信号の周波数帯域幅を該移動物体の移動速度に応じて選
択する選択手段とを有し、該フィルター手段からの出力
信号を用いて該移動物体の移動状態を求めるようにした
ことを特徴とする移動状態検出装置。(1) A detection means for detecting an analog signal based on the amount and speed of movement of a moving object, a filter means for selecting and passing an analog signal with a predetermined frequency bandwidth from among the analog signals, and a filter means for passing the analog signal through the filter means. selecting means for selecting the frequency bandwidth of the analog signal to be transmitted according to the moving speed of the moving object, and the moving state of the moving object is determined using the output signal from the filtering means. A moving state detection device.
増幅手段を有していることを特徴とする請求項1記載の
移動状態検出装置。(2) The moving state detection device according to claim 1, further comprising amplification means for amplifying the analog signal obtained by the detection means.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1177552A JPH0342517A (en) | 1989-07-10 | 1989-07-10 | Movement state detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1177552A JPH0342517A (en) | 1989-07-10 | 1989-07-10 | Movement state detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0342517A true JPH0342517A (en) | 1991-02-22 |
Family
ID=16032949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1177552A Pending JPH0342517A (en) | 1989-07-10 | 1989-07-10 | Movement state detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0342517A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10143732B4 (en) * | 2000-09-08 | 2010-09-30 | Heidenhain K.K. | Measuring signal generating circuit |
-
1989
- 1989-07-10 JP JP1177552A patent/JPH0342517A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10143732B4 (en) * | 2000-09-08 | 2010-09-30 | Heidenhain K.K. | Measuring signal generating circuit |
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