JPH0281469U - - Google Patents
Info
- Publication number
- JPH0281469U JPH0281469U JP16103288U JP16103288U JPH0281469U JP H0281469 U JPH0281469 U JP H0281469U JP 16103288 U JP16103288 U JP 16103288U JP 16103288 U JP16103288 U JP 16103288U JP H0281469 U JPH0281469 U JP H0281469U
- Authority
- JP
- Japan
- Prior art keywords
- rotating body
- rotation sensor
- electromagnetic rotation
- electromagnetic
- convex portion
- 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 10
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 230000004907 flux Effects 0.000 description 7
Landscapes
- Transmission And Conversion Of Sensor Element Output (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Description
第１図乃至第５図は本考案の第１の実施例を示
し、第１図は本実施例に係る電磁式回転センサを
クランク角センサに適用した場合を示す斜視図、
第２図はクランク角センサの接続関係を示す断面
図、第３図は第１のクランク角センサの検出コイ
ルに作用する磁束の関係を示す線図、第４図は第
２のクランク角センサの検出コイルに作用する磁
束の関係を示す線図、第５図は第１、第２のクラ
ンク角センサの検出コイルに作用する磁束との関
係を示す線図、第６図乃至第１０図は第２実施例
を示し、第６図は本実施例に係る電磁式回転セン
サをクランク角センサに適用した場合を示す斜視
図、第７図はクランク角センサの接続関係を示す
断面図、第８図は第１のクランク角センサの検出
コイルに作用する磁束の関係を示す線図、第９図
は第２のクランク角センサの検出コイルに作用す
る磁束の関係を示す線図、第１０図は第１、第２
のクランク角センサの検出コイルに作用する磁束
との関係を示す線図、第１１図は第３実施例に係
る電磁式回転センサをクランク角センサに適用し
た場合を示す一部斜視図、第１２図乃至第１４図
は従来技術のクランク角センサを示し、第１２図
はクランク角センサの一部断面図、第１３図は検
出コイルに作用する磁束の関係を示す線図、第１
４図はクランク角センサの誘導起電圧を示す線図
である。
１２，１３，３１，４１……回転体、１８……
第１のクランク角センサ、２３，３０，３９……
検出コイル、２５，３４……第２のクランク角セ
ンサ、２０，２７，３６……永久磁石。
1 to 5 show a first embodiment of the present invention, and FIG. 1 is a perspective view showing a case where the electromagnetic rotation sensor according to the present embodiment is applied to a crank angle sensor;
Fig. 2 is a sectional view showing the connection relationship of the crank angle sensor, Fig. 3 is a diagram showing the relationship of magnetic flux acting on the detection coil of the first crank angle sensor, and Fig. 4 is a diagram showing the relationship of the magnetic flux acting on the detection coil of the first crank angle sensor. A diagram showing the relationship between the magnetic flux acting on the detection coil; FIG. 5 is a diagram showing the relationship between the magnetic flux acting on the detection coil of the first and second crank angle sensors; FIGS. 6 is a perspective view showing a case where the electromagnetic rotation sensor according to this embodiment is applied to a crank angle sensor, FIG. 7 is a sectional view showing the connection relationship of the crank angle sensor, and FIG. 9 is a diagram showing the relationship between the magnetic flux acting on the detection coil of the first crank angle sensor, FIG. 9 is a diagram showing the relationship between the magnetic flux acting on the detection coil of the second crank angle sensor, and FIG. 1. 2nd
Fig. 11 is a partial perspective view showing the case where the electromagnetic rotation sensor according to the third embodiment is applied to the crank angle sensor; 14 shows a conventional crank angle sensor, FIG. 12 is a partial sectional view of the crank angle sensor, FIG. 13 is a diagram showing the relationship of magnetic flux acting on the detection coil, and FIG.
FIG. 4 is a diagram showing the induced electromotive force of the crank angle sensor. 12, 13, 31, 41...Rotating body, 18...
First crank angle sensor, 23, 30, 39...
Detection coil, 25, 34...Second crank angle sensor, 20, 27, 36...Permanent magnet.
Claims (1)
部と凸部との組み合わせからなる被検出面となつ
た回転体と、該回転体の外周側に配設され、該回
転体の一方の凹部又は凸部の位置を検出してコイ
ルに誘導起電圧を誘起する第１の電磁式回転セン
サと、該第１の電磁式回転センサと前記回転体の
軸方向に対して並行に配置され、前記回転体の他
方の凹部又は凸部の位置を検出してコイルに前記
第１の電磁式回転センサの誘導起電圧と逆極性の
誘導起電圧を誘起する第２の電磁式回転センサと
を備え、前記第１、第２の電磁式回転センサのコ
イルを直列接続することにより前記回転体の回転
をノイズを除去した状態で検出する構成としてな
る回転検出装置。 A rotating body whose outer peripheral surface is a detection surface consisting of two concave portions, two convex portions, or a combination of a concave portion and a convex portion; a first electromagnetic rotation sensor that detects the position of the concave portion or the convex portion and induces an induced electromotive force in a coil; the first electromagnetic rotation sensor is arranged parallel to the axial direction of the rotating body; a second electromagnetic rotation sensor that detects the position of the other concave portion or convex portion of the rotating body and induces in the coil an induced electromotive voltage having a polarity opposite to that of the first electromagnetic rotation sensor; A rotation detection device configured to detect the rotation of the rotating body with noise removed by connecting the coils of the first and second electromagnetic rotation sensors in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16103288U JPH0281469U (en) | 1988-12-12 | 1988-12-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16103288U JPH0281469U (en) | 1988-12-12 | 1988-12-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0281469U true JPH0281469U (en) | 1990-06-22 |
Family
ID=31443623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16103288U Pending JPH0281469U (en) | 1988-12-12 | 1988-12-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0281469U (en) |
-
1988
- 1988-12-12 JP JP16103288U patent/JPH0281469U/ja active Pending