JPS5862514A - Rotation detector - Google Patents
Rotation detectorInfo
- Publication number
- JPS5862514A JPS5862514A JP16133881A JP16133881A JPS5862514A JP S5862514 A JPS5862514 A JP S5862514A JP 16133881 A JP16133881 A JP 16133881A JP 16133881 A JP16133881 A JP 16133881A JP S5862514 A JPS5862514 A JP S5862514A
- Authority
- JP
- Japan
- Prior art keywords
- crank angle
- detected
- magnet
- signal
- angle
- 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
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
- G01D5/12—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 using electric or magnetic means
- G01D5/244—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 using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
- G01D5/245—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 using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
- G01D5/2454—Encoders incorporating incremental and absolute signals
- G01D5/2455—Encoders incorporating incremental and absolute signals with incremental and absolute tracks on the same encoder
- G01D5/2457—Incremental encoders having reference marks
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は内燃機関の回転検出装置に関する。[Detailed description of the invention] The present invention relates to a rotation detection device for an internal combustion engine.
一般にエンジン制御に用いられるクランク角悟号は、第
１図に示される如くクランク角の単位角＜ｒ：）毎に出
力される・量ルスからなっている。ところがニンジン制
御の中枢となる点火時期制御及び点火コイルの通電角度
制御を行なうには、上記クランク角の単位角信号以外に
、クランク軸の基準位置に対応するクラン゛り角基準信
号が必要である。しかし従来にあっては、クランク軸の
基準位置を知るセ／すと、クランク角の単位角毎に出力
される・臂ルスを傅るセンサとを全く別々に設けていた
ため、これらのセンナ部が高価になる問題があった。
□本発明は上記実情に鑑みてなされたもので、クラン
ク角基準信号とクランク角単位角信号の２情報をにンゾ
ンの１つのクランク角信号から得られるようにすること
により、前記従来の間ボ点をなくすことができる回転検
出装置を提供しようとするものである。The crank angle signal generally used for engine control consists of a quantity Lus output for each unit angle of the crank angle <r:), as shown in FIG. However, in order to control the ignition timing and the energization angle of the ignition coil, which are the core of carrot control, in addition to the unit angle signal of the crank angle, a crank angle reference signal corresponding to the reference position of the crankshaft is required. . However, in the past, when the reference position of the crankshaft was known, the sensors that output every unit of crank angle and the sensor that controlled the arm lupus were installed completely separately. The problem was that it was expensive.
□The present invention has been made in view of the above-mentioned circumstances, and by making it possible to obtain two information, a crank angle reference signal and a crank angle unit angle signal, from one crank angle signal of the engine, It is an object of the present invention to provide a rotation detection device that can eliminate dots.
以下図面を参照して本発明の一実施例を説明する。第２
図は同実施例を示す構成図である。An embodiment of the present invention will be described below with reference to the drawings. Second
The figure is a configuration diagram showing the same embodiment.
図中１は内燃機関のクランク軸と同軸で該クランク軸と
共に回転する回転体、２は該回転体１の周囲にわたシ一
定隔関（単位角６ ）毎に設けられた磁石部、３１はこ
れら磁石部２の一部を連続化して形成した磁石部、３８
は上記磁石部２の一部を欠落させた欠落部、４は上記−
６部２．３１が通過したことを、例えばその磁束を検出
することにより知る検出部（ピックアッグノで、この検
出部４は磁石部２．３１の通路の一部に対向するように
固定される。In the figure, 1 is a rotating body that is coaxial with the crankshaft of the internal combustion engine and rotates together with the crankshaft, 2 is a magnet section provided at regular intervals (unit angle 6) around the rotating body 1, and 31 is a rotating body that is coaxial with the crankshaft of the internal combustion engine and rotates together with the crankshaft. A magnet part 38 formed by making a part of these magnet parts 2 continuous
4 is the missing part where a part of the magnet part 2 is missing, and 4 is the -
A detection section (a pick-up sensor) that detects the passage of the magnet section 2.31 by detecting its magnetic flux, for example, is fixed so as to face a part of the path of the magnet section 2.31.
上記の如き回転検出装置にあっては、磁石部３Ｎ及び欠
落部３２０周期を、４気筒４ブイタルの内燃機関の場合
１８０’、６気筒の場合Ｉｎ。In the rotation detecting device as described above, the period of the magnet portion 3N and the missing portion 320 is 180' in the case of a 4-cylinder, 4-bit internal combustion engine, and In in the case of a 6-cylinder engine.
等とすることにより、第３図に示される如くクランク角
基準信号１とクランク角単位角信号すの２情＠會含むク
ランク角信号が、検出部４から得られる。即ち１個の検
出部４１Ｌ−用いるだけで、クランク角基準信号及びク
ランク角単位角１ｄ号の両者が得られる丸め、検出部（
センサ）のコスト低減化が可能となるものである。As a result, a crank angle signal containing two information, ie, a crank angle reference signal 1 and a crank angle unit angle signal 1, is obtained from the detecting section 4 as shown in FIG. That is, the rounding and detection unit (41L) that can obtain both the crank angle reference signal and the crank angle unit angle 1d by using only one detection unit 41L.
This makes it possible to reduce the cost of sensors.
なお本発明は実施例のみに限：定されず、植々の応用か
り能である。例えば曲記実施例では、第ｌの回転角被検
知体として磁石部２を用い、ｗ４２の回転角被検知体と
して磁石部３Ｋ、欠落部１ｓｔ−用い、Ｊ：記第１及び
第２の回転角被検知体の通過検出手段４として磁束を検
出するものを用いたが−例えば第４図に示される如く１
回転体１の周方向に一定間隔（単位角ｎ０）毎に透孔１
１を設け、これら透孔１１の成る部分を大通孔１２とし
、これら透孔の通過検出手段として光源１３及び受光部
１４よりなるものを用い、その用力をアングツ５で増幅
して、第３図と同等の波形を得るようにしてもよい。Note that the present invention is not limited to the examples, but can be applied to plants. For example, in the written embodiment, the magnet part 2 is used as the lth rotation angle detected object, the magnet part 3K and the missing part 1st are used as the rotation angle detected object of w42, and J: first and second rotation. As the detection means 4 for detecting the passage of an angular detected object, one that detects magnetic flux was used - for example, as shown in FIG.
Through holes 1 are formed at regular intervals (unit angle n0) in the circumferential direction of the rotating body 1.
1 are provided, the portions formed by these through holes 11 are defined as large through holes 12, and a light source 13 and a light receiving section 14 are used as passage detection means for these through holes, and the power thereof is amplified by Angtsu 5. A waveform equivalent to that may be obtained.
以上説明した如く本発明によれば、１個の検出部（セン
サ）からクランク角基、単信号及びクランク角単位角信
号が得られるため、上記検出部のコスト低減化が可能と
なる回転検出装置が提供できるものである。As explained above, according to the present invention, since a crank angle base, a single signal, and a crank angle unit angle signal can be obtained from one detection section (sensor), the rotation detection device can reduce the cost of the detection section. can be provided.
第１図はクラ／り角信号を示す波形図、第２・：：
図は本発明の一笑施例の構成を示す正面図、第３図は同
構成から得られるクランク角信号を示す波形図、第４図
（荀は本発明の他の実施例の構成を示す正面図、同図（
ｂ）は同構成の側面図でろ。
る０
１・・・回転体、２．３１・・・磁石部、３．用欠落都
、４・・・センサ、１１．１２・・・透孔ｓｉｓ・・・
光源、１４・・・受光部。Fig. 1 is a waveform diagram showing a crank angle signal, Fig. 2 is a front view showing the configuration of an embodiment of the present invention, and Fig. 3 is a waveform diagram showing a crank angle signal obtained from the same configuration. , FIG. 4 is a front view showing the configuration of another embodiment of the present invention;
b) is a side view of the same configuration. 0 1... Rotating body, 2.31... Magnet part, 3. Missing capital, 4...sensor, 11.12...through hole sis...
Light source, 14... light receiving section.
Claims (1)
転体の周方向に間隔的に設けられた第ｌの回転角被検知
体、及びこれら回転角被検知体の一部を異種化して配置
され九纂２の回転角被検知体と、前記各回転角被検知体
がそれぞれ一定位置を通過したこと１−検出する検出手
段とを具備し、該検出手段によシ、前記第１の回転角被
検知体を検出したらクランク角の単位角１−号を得、か
つ第２の回転角被検知体を検出したらクランク角基準信
号を得るようにしたことを特徴とする回転検出装置。A rotating body that rotates together with a crankshaft of an internal combustion engine, a first rotation angle detected body provided at intervals in a circumferential direction of the rotating body, and a part of these rotation angle detected bodies arranged in different types. The first rotation angle is detected by the detection means, and includes a detection means for detecting that each of the rotation angle detection objects passes through a fixed position. A rotation detection device characterized in that when a detected object is detected, a unit angle number 1 of a crank angle is obtained, and when a second rotation angle detected object is detected, a crank angle reference signal is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16133881A JPS5862514A (en) | 1981-10-09 | 1981-10-09 | Rotation detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16133881A JPS5862514A (en) | 1981-10-09 | 1981-10-09 | Rotation detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5862514A true JPS5862514A (en) | 1983-04-14 |
Family
ID=15733177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16133881A Pending JPS5862514A (en) | 1981-10-09 | 1981-10-09 | Rotation detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5862514A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0526609A (en) * | 1991-07-23 | 1993-02-02 | Nippondenso Co Ltd | Rotation angle sensor |
| EP0621460A1 (en) * | 1993-04-15 | 1994-10-26 | Nippondenso Co., Ltd. | Sensor signal processing unit |
-
1981
- 1981-10-09 JP JP16133881A patent/JPS5862514A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0526609A (en) * | 1991-07-23 | 1993-02-02 | Nippondenso Co Ltd | Rotation angle sensor |
| EP0621460A1 (en) * | 1993-04-15 | 1994-10-26 | Nippondenso Co., Ltd. | Sensor signal processing unit |
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