JPS63159714A - Multiple rotation absolute position detector - Google Patents
Multiple rotation absolute position detectorInfo
- Publication number
- JPS63159714A JPS63159714A JP31518886A JP31518886A JPS63159714A JP S63159714 A JPS63159714 A JP S63159714A JP 31518886 A JP31518886 A JP 31518886A JP 31518886 A JP31518886 A JP 31518886A JP S63159714 A JPS63159714 A JP S63159714A
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- Japan
- Prior art keywords
- rotation
- input shaft
- absolute
- counting
- detection section
- Prior art date
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- 238000001514 detection method Methods 0.000 claims abstract description 50
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 abstract description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010291 electrical method Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明は、レゾルバやアブソリュートエンコーダのよ
うな絶対位置検出器に関連し、殊にこの発明は、多回転
にわたって入力軸の絶対回転量と絶対回転角度とを検出
するための多回転絶対位置検出器に関する。Detailed Description of the Invention <Industrial Application Field> The present invention relates to absolute position detectors such as resolvers and absolute encoders. The present invention relates to a multi-rotation absolute position detector for detecting rotation angles.
〈従来の技術〉
一般に多回転絶対位置検出器は、入力軸に対し絶対回転
角度検出部と絶対回転量検出部とが連繋配備された構造
のものである。従来のこの種多回転絶対位置検出器にお
いて、前記絶対回転量検出部には減速機を用いたものが
一般的であり、入力軸の回転を機械的に減速して出力軸
に伝え、この出力軸に取り付けた回転ディスクより絶対
回転量の検出パターンを読み取って、絶対回転量を検出
している。<Prior Art> Generally, a multi-rotation absolute position detector has a structure in which an absolute rotation angle detection section and an absolute rotation amount detection section are connected and arranged with respect to an input shaft. In conventional multi-rotation absolute position detectors of this kind, the absolute rotation amount detecting section generally uses a reducer, which mechanically decelerates the rotation of the input shaft and transmits it to the output shaft. The absolute amount of rotation is detected by reading the detection pattern of the amount of absolute rotation from a rotating disk attached to the shaft.
〈発明が解決しようとする問題点〉
ところが上記多回転絶対位置検出器の場合、減速機が用
いであるため、全体形状およびその重量が著しく嵩み、
また製作コストが高価につくという問題がある。<Problems to be Solved by the Invention> However, in the case of the above-mentioned multi-rotation absolute position detector, since a reduction gear is used, the overall shape and weight are significantly large.
Another problem is that the manufacturing cost is high.
この発明は、上記問題点に着目してなされたもので、入
力軸の絶対回転量をバックアップ電池を利用した電気的
方法で検出することによって、小型かつ軽量で、しかも
安価な多回転絶対位置検出器を提供することを目的とす
る。This invention has been made in view of the above-mentioned problems. By detecting the absolute amount of rotation of the input shaft using an electrical method using a backup battery, the present invention is compact, lightweight, and inexpensive and provides multi-rotation absolute position detection. The purpose is to provide equipment.
またこの発明の他の目的は、絶対回転量の検出出力の取
出方法を工夫することによって、検出ミスの発生を防止
した多回転絶対位置検出器を提供することにある。Another object of the present invention is to provide a multi-rotation absolute position detector that prevents detection errors by devising a method for extracting the detection output of the absolute rotation amount.
〈問題点を解決するための手段〉
上記目的を達成するため、この発明では、入力軸に対し
絶対回転角度検出部と絶対回転量検出部とが連繋配備さ
れた多回転絶対位置検出器であって、前記絶対回転量検
出部は、入力軸の回転量に応じた２組の電気信号を入力
軸の半回転分だけタイミングをずらせて発生させる信号
発生手段と、この信号発生手段からの電気信号に基づき
計数動作してその計数内容を保持するための第１．第２
の計数手段と、各計数手段の電源をバックアップするた
めのバックアップ電池と、前記絶対回転角度検出部の検
出出力に基づき第１．第２の各計数手段の計数内容のい
ずれかを選択して出力する出力選択手段とを具備させる
ことにした。<Means for Solving the Problems> In order to achieve the above object, the present invention provides a multi-rotation absolute position detector in which an absolute rotation angle detection section and an absolute rotation amount detection section are connected and arranged with respect to an input shaft. The absolute rotation amount detection section includes a signal generating means for generating two sets of electric signals corresponding to the rotation amount of the input shaft with timings shifted by half a rotation of the input shaft, and an electric signal from the signal generating means. The first step is to carry out a counting operation based on the calculation and hold the counting contents. Second
counting means, a backup battery for backing up the power supply of each counting means, and a first one based on the detection output of the absolute rotation angle detection section. It was decided to include an output selection means for selecting and outputting one of the count contents of each of the second counting means.
〈作用〉
入力軸が回転すると、入力軸の回転量は絶対回転量検出
部で、また入力軸の回転角度は絶対回転角度検出部で、
それぞれ検出される。<Function> When the input shaft rotates, the amount of rotation of the input shaft is detected by the absolute rotation amount detection section, and the rotation angle of the input shaft is detected by the absolute rotation angle detection section.
Each is detected.
前記絶対回転量検出部では、入力軸が回転すると、その
回転量に応じた２組の電気信号が信号発生手段で発生せ
られ、それぞれ電気信号に基づき第１．第２の各計数手
段は計数動作を行って入力軸の絶対回転量を求める。各
計数手段はバックアップ電池でバックアップされており
、その計数内容は主電源が切れても完全保持される。In the absolute rotation amount detection section, when the input shaft rotates, two sets of electric signals corresponding to the rotation amount are generated by the signal generating means, and the first and second sets are generated based on the electric signals, respectively. Each second counting means performs a counting operation to obtain the absolute rotation amount of the input shaft. Each counting means is backed up by a backup battery, and the counting contents are completely retained even if the main power is turned off.
かくて第１．第２の各計数手段の計数内容は出力選択手
段に与えられ、出力選択手段は絶対回転角度検出部の検
出出力、すなわち入力軸の回転角度位置に応じて正確さ
が確保されている方の計数内容を選択して出力する。Thus, the first. The count content of each second counting means is given to the output selection means, and the output selection means selects the count whose accuracy is ensured according to the detection output of the absolute rotation angle detection section, that is, the rotation angle position of the input shaft. Select and output content.
この発明の多回転絶対位置検出器の場合、機械的な減速
機を用いていないから、小型かつ軽量であり、しかも安
価に製作できる。また絶対回転量の検出出力の取出方法
を工夫しであるから、検出ミスの発生が完全に防止され
ることになる。The multi-rotation absolute position detector of the present invention does not use a mechanical speed reducer, so it is small and lightweight, and can be manufactured at low cost. Furthermore, since the method for extracting the detection output of the absolute rotation amount is devised, detection errors can be completely prevented from occurring.
〈実施例〉
第１図は、この発明の一実施例にががる多回転絶対位置
検出器の構成例を示す。<Embodiment> FIG. 1 shows an example of the configuration of a multi-rotation absolute position detector according to an embodiment of the present invention.
図示例のものは入力軸１に対し絶対回転角度検出部２と
絶対回転量検出部３とが連繋配備されたもので、絶対回
転角度検出部２および絶対回転量検出部３を円筒状ケー
ス４の内部に収容配備すると共に、前記入力軸１の先端
をケース４の前面へ突出させている。In the illustrated example, an absolute rotation angle detection section 2 and an absolute rotation amount detection section 3 are connected and arranged with respect to an input shaft 1, and the absolute rotation angle detection section 2 and the absolute rotation amount detection section 3 are connected to a cylindrical case 4. The input shaft 1 is housed inside the case 4, and the tip of the input shaft 1 protrudes toward the front of the case 4.
前記絶対回転角度検出部２は、入力軸１の絶対回転角度
を検出するためのものであり、第２図に示す如く、絶対
回転角度の検出パターンが施された回転ディスク５を入
力軸１に装着し、この回転ディスク５およびスリット８
を中間に挟んで複数の発光ダイオードより成る発光素子
群６と、複数のフォトトランジスタより成る受光素子群
７とを対向配備して構成されている。The absolute rotation angle detection section 2 is for detecting the absolute rotation angle of the input shaft 1, and as shown in FIG. This rotating disk 5 and slit 8
A light emitting element group 6 made up of a plurality of light emitting diodes and a light receiving element group 7 made up of a plurality of phototransistors are disposed facing each other with a light emitting element group 6 formed of a plurality of light emitting diodes sandwiched in between.
なお上記発光素子群６および受光素子群７は主電源（図
示せず）により駆動される。Note that the light emitting element group 6 and the light receiving element group 7 are driven by a main power source (not shown).
前記絶対回転量検出部３は、入力軸重の絶対回転量（絶
対回転数）を検出するためのものであり、入力軸１の回
転量に応じた２組の電気信号を発生させる信号発生部９
と、この信号発生部９からのそれぞれ電気信号に基づき
計数動作すると共にその計数内容を常時保持するための
第１．第２の計数部１０Ａ、１０Ｂと、各計数部１０Ａ
、ＩＯＢの電源をバックアップするたためのバックアッ
プ電池１１と、前記絶対回転角度検出部２の検出出力に
基づき第１．第２の各計数部１０Ａ、１０Ｂの計数内容
のいずれかを選択して出力する出力選択部１２とから構
成されている。The absolute rotation amount detection section 3 is for detecting the absolute rotation amount (absolute rotation speed) of the input shaft load, and is a signal generation section that generates two sets of electric signals according to the rotation amount of the input shaft 1. 9
and a first . . Second counting section 10A, 10B and each counting section 10A
, a backup battery 11 for backing up the power supply of the IOB, and the detection output of the absolute rotation angle detector 2. The output selecting section 12 selects and outputs one of the counted contents of each of the second counting sections 10A and 10B.
図示例の信号発生部９は、入力軸１の後端に回転ディス
ク１２を装着し、この回転ディスク１２の上面適所に永
久磁石片１３を配備すると共に、この永久磁石片１３の
通過軌道上の１８０度ずれた対向位置にそれぞれ一対の
磁気センサ１４Ａ、１５Ａと１４Ｂ、１５Ｂ （以下、
１４Ａ。The illustrated signal generator 9 has a rotating disk 12 attached to the rear end of the input shaft 1, a permanent magnet piece 13 disposed at an appropriate position on the upper surface of the rotating disk 12, and A pair of magnetic sensors 14A, 15A and 14B, 15B (hereinafter referred to as
14A.
１４Ｂを「第１センサ」、１５Ａ、１５Ｂを「第２セン
サ」という）を並列配備したものである。第１．第２の
各センサ１４Ａ、１５Ａおよび１４Ｂ、１５Ｂは例えば
リードスイッチやホール素子であって、磁気センサ１４
Ａ、１５Ａの方は絶対回転角度検出部２の原点と位相を
合わせて、また磁気センサ１４Ｂ、１５Ｂの方は１８０
度位相をずらせて、それぞれケース内に位置決め固定さ
れており、入力軸１が１回転して永久磁石片１３が各セ
ンサ位置を通過する度に電気信号’Ｉｎ’！を発生させ
る。14B is called a "first sensor", and 15A and 15B are called "second sensors") are arranged in parallel. 1st. The second sensors 14A, 15A and 14B, 15B are, for example, reed switches or Hall elements, and the magnetic sensor 14
A and 15A are aligned in phase with the origin of the absolute rotation angle detection section 2, and magnetic sensors 14B and 15B are aligned in phase with 180.
They are positioned and fixed in the case with different phases, and each time the input shaft 1 rotates once and the permanent magnet piece 13 passes each sensor position, an electric signal 'In' is sent! to occur.
この電気信号ｉＩ＋”！の発生順序は回転ディスク１２
の回転方向に応じて反転し、正回転のときは、第３図に
示す如く第１センサ、第２センサの順で電気信号１１＋
１２が発生し、また逆回転のときは、第４図に示す如く
第２センサ、第１センサの順で電気信号１２＋１＋が発
生する。The order in which this electric signal iI+"! is generated is
When the rotation direction is reversed, the electric signal 11+ is sent to the first sensor and the second sensor in that order as shown in FIG.
12 is generated, and when the rotation is reversed, an electric signal 12+1+ is generated in the order of the second sensor and the first sensor as shown in FIG.
前記の第１．第２の各計数部１０Ａ、ＩＯＢは、信号発
生部９からの電気信号１１＋ ｉＺに基づき入力軸１
の回転方向を検出する論理回路より成る判断回路部と、
入力軸１の回転量を加減算して計数する計数回路部とを
含んでおり、この計数回路部には低消費電力の０ＭＯ３
より成るアップ・ダウンカウンタが用いられている。Above 1. Each of the second counting sections 10A and IOB calculates the input shaft 1 based on the electrical signal 11+iZ from the signal generating section 9.
a judgment circuit section consisting of a logic circuit for detecting the rotation direction of the
It includes a counting circuit section that adds and subtracts the rotation amount of the input shaft 1, and this counting circuit section includes a low power consumption 0MO3
An up/down counter consisting of the following is used.
第１．第２の各計数部１０Ａ、１０Ｂは信号発生部９よ
り第３図に示すタイミングで電気信号１１＋’２が送出
されてくると、入力軸１が正回転していると判断してア
ンプカウントし、また第４図に示すタイミングで電気信
号ｔＺ＋ １１が送出されてくると、入力軸１が逆転
していると判断してダウンカウントする。−またこれら
各計数部１０Ａ、ＩＯＢは、主電源が切られてもバック
アップ電池１１により電源がバックアップされており、
従ってその計数内容は常時保持される。1st. When the electrical signal 11+'2 is sent from the signal generator 9 at the timing shown in FIG. 3, the second counting sections 10A and 10B determine that the input shaft 1 is rotating in the forward direction and count the amplifiers. Also, when the electric signal tZ+11 is sent out at the timing shown in FIG. 4, it is determined that the input shaft 1 is reversed, and the countdown is performed. -Also, each of these counting units 10A and IOB is backed up by the backup battery 11 even if the main power is turned off.
Therefore, the count contents are always held.
なお前記第１．第２の各センサ１４Ａ。Note that the above 1. Each second sensor 14A.
１５Ａおよび１４Ｂ、１５Ｂとしてホール素子を用いた
場合は、信号発生部９の出力側に各ホール素子の電気抵
抗の変化を検出する回路を挿入すると共に、その回路お
よび各ホール素子にバックアップ電池１１を接続して電
源のバックアップを行うようにする。When Hall elements are used as 15A, 14B, and 15B, a circuit for detecting changes in the electrical resistance of each Hall element is inserted on the output side of the signal generator 9, and a backup battery 11 is connected to the circuit and each Hall element. Connect it to provide backup power.
上記第１．第２の各計数部１０Ａ、ＩＯＢの計数内容は
出力選択部１２に与えられる。Above 1. The count contents of each of the second counting sections 10A and IOB are given to the output selection section 12.
この出力選択部１２は、入力軸１の回転角度位置が０度
のとき、すなわち永久磁石片１３が磁気センサ１４Ａ、
１５Ａの近傍ないし中間位置に存在するときは第１計数
部１０Ａの計数内容が不確実になり、また入力軸１の回
転角度位置が１８０度のとき、すなわち永久磁石片１３
が磁気センサ１４Ｂ、１５Ｂの近傍ないし中間位置に存
在するときは第２計数部１０Ｂの計数内容が不確実にな
ることに鑑み、入力軸１の現在の回転角度位置に応じて
各計数部１０Ａ、１．ＯＢの計数内容のうち正確さが確
保されている方の計数内容を選択して出力するためのも
のである。This output selection unit 12 operates when the rotation angle position of the input shaft 1 is 0 degrees, that is, when the permanent magnet piece 13 is the magnetic sensor 14A,
15A, the count content of the first counting section 10A becomes uncertain, and when the rotation angle position of the input shaft 1 is 180 degrees, that is, when the permanent magnet piece 13
In consideration of the fact that the count content of the second counting section 10B becomes uncertain when the second counting section 10B exists in the vicinity or intermediate position of the magnetic sensors 14B, 15B, each counting section 10A, 1. This is for selecting and outputting the counting contents whose accuracy is ensured among the counting contents of the OB.
いま仮に絶対回転角度検出部２の分解能をｎとすると、
第５図に示す如（、絶対回転角度検出部２の検出値がＯ
やｎの近傍位置では第１の計数部１０Ａの計数内容が不
確実となり（図中不確実領域を斜線で示す）、またｎ
／ ２の近傍位置では第２の計数部１０Ｂの計数内容が
不確実となる。そこでこの実施例の出力選択部１２では
、絶対回転角度検出部２の検出値が０〜ｎ／４−１の範
囲では第２の計数部１０Ｂの計数内容Ｎ、にｌ加算した
値を、ｎ／４〜３ｎ／４−１の範囲では第１の計数部１
０Ａの計数内容ＮＡを、３ｎ／４〜ｎ−１の範囲では第
２の計数部１０Ｂの計数内容Ｎ、を、それぞれ選択して
出力している。Now, let us assume that the resolution of the absolute rotation angle detection section 2 is n.
As shown in FIG. 5 (when the detected value of the absolute rotation angle detector 2 is
The count contents of the first counting section 10A are uncertain at positions near n and n (uncertain areas are indicated by diagonal lines in the figure), and n
/2, the count content of the second counting section 10B becomes uncertain. Therefore, in the output selection section 12 of this embodiment, when the detected value of the absolute rotation angle detection section 2 is in the range of 0 to n/4-1, the value obtained by adding l to the count content N of the second counting section 10B is set to n /4 to 3n/4-1, the first counting section 1
The count content NA of 0A and the count content N of the second counting unit 10B in the range of 3n/4 to n-1 are selected and output, respectively.
しかして入力軸１が回転すると、入力軸１の絶対回転量
は絶対回転量検出部３で検出され、また入力軸１の絶対
回転角度は絶対回転角度検出部２で検出される。When the input shaft 1 rotates, the absolute rotation amount of the input shaft 1 is detected by the absolute rotation amount detection section 3, and the absolute rotation angle of the input shaft 1 is detected by the absolute rotation angle detection section 2.
すなわち絶対回転角度検出部２においては、入力軸１の
回転で回転ディスク５が一体に回転し、発光素子群６の
出力光のうちあるものは回転ディスク５の検出パターン
に従って透過し、またあるものは遮断される。透過光は
受光素子群７で受光されて電気信号に変換され、絶対回
転角度を表すディジタル信号に生成されて出力される。That is, in the absolute rotation angle detection section 2, the rotating disk 5 rotates together with the rotation of the input shaft 1, and some of the output light from the light emitting element group 6 is transmitted according to the detection pattern of the rotating disk 5, and some of the output light is transmitted according to the detection pattern of the rotating disk 5. is blocked. The transmitted light is received by the light-receiving element group 7, converted into an electrical signal, generated into a digital signal representing the absolute rotation angle, and output.
また絶対回転量検出部３においては、入力軸１の回転で
回転ディスク１２が一体回転し、この回転とともに永久
磁石片１３が回転する。この永久磁石片１３が第１．第
２の各センサ１４Ａ。Further, in the absolute rotation amount detection section 3, the rotation of the input shaft 1 causes the rotary disk 12 to rotate integrally, and the permanent magnet piece 13 rotates with this rotation. This permanent magnet piece 13 is the first. Each second sensor 14A.
１５Ａ１さらには１８０度ずれて位置する他の組の第１
．第２の各センサ１４Ｂ、１５Ｂの位置をそれぞれ通過
すると、各センサ１４Ａ、１５Ａおよび１４Ｂ、１５Ｂ
はこれを検出して、１回転につき１個のパルス状の電気
信号１１＋ｆ２を異なるタイミングでそれぞれ発生させ
る。これらの電気信号１１＋’Ｚはそれぞれ第１．第２
の各計数部１０Ａ、ＩＯＢに与えられ、各計数部１０Ａ
、ＩＯＢはこれら電気信号１１＋１２の送出タイミング
に基づき入力軸ｌの回転方向を判断すると共に、その回
転方向に応じてアップカウントまたはダウンカウントし
、その計数値を出力選択部１２へ出力する。なお各計数
部１０Ａ、ＩＯＢはバンクアップ電池１１でバックアッ
プされており、従って計数部１０Ａ。15A1 and the first of another set located 180 degrees apart.
．． When passing through the positions of the second respective sensors 14B, 15B, each sensor 14A, 15A and 14B, 15B
detects this and generates one pulse-like electric signal 11+f2 per rotation at different timings. These electrical signals 11+'Z are the first . Second
are given to each counting section 10A and IOB, and each counting section 10A
, IOB determines the rotational direction of the input shaft l based on the sending timing of these electric signals 11+12, counts up or down depending on the rotational direction, and outputs the counted value to the output selection section 12. Note that each counting section 10A and IOB are backed up by a bank-up battery 11, and therefore the counting section 10A.
１０Ｂでの計数内容は主電源が切れても完全保持される
。The count contents at 10B are completely retained even if the main power is turned off.
かくて出力選択部１２では絶対回転角度検出部２の検出
出力、すなわち入力軸１の回転角度位置に応じて正確さ
が確保されている方の計数内容を選択し、それを絶対回
転量として出力するものである。In this way, the output selection section 12 selects the detection output of the absolute rotation angle detection section 2, that is, the count content whose accuracy is ensured according to the rotation angle position of the input shaft 1, and outputs it as the absolute rotation amount. It is something to do.
〈発明の効果〉
この発明は上記の如（、入力軸の絶対回転量を機械的な
減速機を用いず、バックアップ電池を利用した電気的方
法で検出するようにしたから、小型かつ軽量な多回転絶
対位置検出器を安価に製作できる。また絶対回転量の検
出出力の取出方法を工夫して、その正確性を確保してい
るから、絶対回転量の検出ミスの発生が完全に防止され
る等、発明目的を達成した顕著な効果を奏する。<Effects of the Invention> As described above, the present invention detects the absolute rotation amount of the input shaft by an electrical method using a backup battery without using a mechanical speed reducer. Absolute rotational position detectors can be manufactured at low cost.Also, since the method for extracting the detection output of the absolute rotation amount is devised to ensure its accuracy, errors in detecting the absolute rotation amount are completely prevented. etc., it achieves the remarkable effect of achieving the purpose of the invention.
第１図はこの発明の一実施例にかかる多回転絶対位置検
出器の構成説明図、第２図は絶対回転角度検出部の構造
説明図、第３図および第４図は信号発生部が出力する電
気信号のタイミングを示すタイムチャート、第５図は出
力選択部の選択動作を示す説明図である。
ｌ・・・・入力軸
２・・・・絶対回転角度検出部
３・・・・絶対回転量検出部
９・・・・信号発生部 １０Ａ、ＩＯＢ・・・・計数
部１１・・・・バックアップ電池
１２・・・・出力選択部
特許 出願人 立石電機株式会社
骨５）ｚ
上のＬｉＸｋ戸丙ｊ（り（重力ＱＢ斤、邦兎萌沙８分ｚ
）”ＡFig. 1 is an explanatory diagram of the structure of a multi-rotation absolute position detector according to an embodiment of the present invention, Fig. 2 is an explanatory diagram of the structure of the absolute rotation angle detection section, and Figs. 3 and 4 are outputs from the signal generation section. FIG. 5 is an explanatory diagram showing the selection operation of the output selection section. l... Input shaft 2... Absolute rotation angle detection section 3... Absolute rotation amount detection section 9... Signal generation section 10A, IOB... Counting section 11... Backup Battery 12...Output selection section patent Applicant: Tateishi Electric Co., Ltd.
)”A
Claims (3)
出部とが連繋配備された多回転絶対位置検出器であって
、 前記絶対回転量検出部は、 入力軸の回転量に応じた２組の電気信号を入力軸の半回
転分だけタイミングをずらせて発生させる信号発生手段
と、 この信号発生手段からの各電気信号に基づき計数動作し
てその計数内容を保持するための第１、第２の計数手段
と、 各計数手段の電源をバックアップするためのバックアッ
プ電池と、 前記絶対回転角度検出部の検出出力に基づき第１、第２
の各計数手段の計数内容のいずれかを選択して出力する
出力選択手段とを具備して成る多回転絶対位置検出器。(1) A multi-rotation absolute position detector in which an absolute rotation angle detection section and an absolute rotation amount detection section are arranged in conjunction with each other with respect to an input shaft, and the absolute rotation amount detection section is configured to detect a rotation amount according to the rotation amount of the input shaft. Signal generation means for generating two sets of electric signals with timings shifted by half a revolution of the input shaft; and a first means for counting based on each electric signal from the signal generation means and holding the count contents. a second counting means; a backup battery for backing up the power supply of each counting means; and a first and second counting means based on the detection output of the absolute rotation angle detection section.
A multi-rotation absolute position detector comprising output selection means for selecting and outputting one of the counted contents of each counting means.
、この回転ディスク上に永久磁石片を設けると共に、こ
の永久磁石片の通過軌道上の１８０度ずれた対向位置に
それぞれ一対の磁気センサを並列配備して構成されてい
る特許請求の範囲第１項記載の多回転絶対位置検出器。(2) The signal generation means includes a rotary disk mounted on the input shaft, a permanent magnet piece provided on the rotary disk, and a pair of magnetic sensors located at opposing positions 180 degrees apart on the trajectory of the permanent magnet piece. A multi-rotation absolute position detector according to claim 1, which is configured by arranging in parallel.
ンタを含んでいる特許請求の範囲第１項記載の多回転絶
対位置検出器。(3) The multi-rotation absolute position detector according to claim 1, wherein each of the first and second counting means includes an up/down counter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31518886A JPS63159714A (en) | 1986-12-23 | 1986-12-23 | Multiple rotation absolute position detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31518886A JPS63159714A (en) | 1986-12-23 | 1986-12-23 | Multiple rotation absolute position detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63159714A true JPS63159714A (en) | 1988-07-02 |
| JPH0523692B2 JPH0523692B2 (en) | 1993-04-05 |
Family
ID=18062480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31518886A Granted JPS63159714A (en) | 1986-12-23 | 1986-12-23 | Multiple rotation absolute position detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63159714A (en) |
-
1986
- 1986-12-23 JP JP31518886A patent/JPS63159714A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0523692B2 (en) | 1993-04-05 |
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