JPS6390164U - - Google Patents
Info
- Publication number
- JPS6390164U JPS6390164U JP1986185256U JP18525686U JPS6390164U JP S6390164 U JPS6390164 U JP S6390164U JP 1986185256 U JP1986185256 U JP 1986185256U JP 18525686 U JP18525686 U JP 18525686U JP S6390164 U JPS6390164 U JP S6390164U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- pulse
- rotation speed
- circuit
- rotor
- 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.)
- Granted
Links
- 230000005856 abnormality Effects 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 9
Landscapes
- Control Of Electric Motors In General (AREA)
Description
第１図は本考案に係る一実施例を示す回路図、
第２図はこの回路に入力される信号のパルス波形
図、第３図は第１パルス信号のパルス波形図、
第３図と第３図は夫々第２パルス信号のパル
ス波形図、第４図は第２パルス信号のパルス波
形図、第４図は出力回路から出力されるパルス
波形図、第５図は第２パルス信号のパルス波形
図、第５図は出力回路から出力されるパルス波
形図である。
１……第１パルス発生回路、８……第２パルス
発生回路、１７……出力回路、２３……リレー。
FIG. 1 is a circuit diagram showing an embodiment of the present invention;
Figure 2 is a pulse waveform diagram of the signal input to this circuit, Figure 3 is a pulse waveform diagram of the first pulse signal,
Figures 3 and 3 are respectively pulse waveform diagrams of the second pulse signal, Figure 4 is a pulse waveform diagram of the second pulse signal, Figure 4 is a pulse waveform diagram output from the output circuit, and Figure 5 is a pulse waveform diagram of the second pulse signal. A pulse waveform diagram of the two-pulse signal, FIG. 5 is a pulse waveform diagram output from the output circuit. 1...First pulse generation circuit, 8...Second pulse generation circuit, 17...Output circuit, 23...Relay.
Claims (1)
に取り出された信号が入力された時、その波形を
整形して、一定のパルス幅Ｗ１を有する第１パル
ス信号を出力する第１パルス発生回路１と、 該第１パルス発生回路１からの第１パルス信号
が入力されると共に、上記回転子の回転数が所定
数より大であれば、出力せず、かつ、該回転数が
該所定数より小であれば、第２パルス信号を出力
する第２パルス発生回路８と、 該第２パルス発生回路８からの第２パルス信号
を連続信号に整形し、かつ、該連続信号にて、リ
レー２３を動作させて、上記回転子の回転数の異
常を知らせるための接点信号を出力する回路１７
と、 を備えたことを特徴とする回転数異常検出回路。[Claims for Utility Model Registration] When a signal extracted every rotation of a rotor of a rotating machine such as a motor or a fan is input, the waveform is shaped to produce a first signal having a constant pulse width W1 . A first pulse generating circuit 1 that outputs a pulse signal, and if the first pulse signal from the first pulse generating circuit 1 is input and the rotation speed of the rotor is higher than a predetermined number, no output is made. , and if the rotation speed is smaller than the predetermined number, a second pulse generation circuit 8 outputs a second pulse signal, and the second pulse signal from the second pulse generation circuit 8 is shaped into a continuous signal. , and a circuit 17 that operates the relay 23 based on the continuous signal and outputs a contact signal for notifying abnormality in the rotation speed of the rotor.
A rotation speed abnormality detection circuit comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986185256U JPH0738856Y2 (en) | 1986-12-01 | 1986-12-01 | Rotational speed abnormality detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986185256U JPH0738856Y2 (en) | 1986-12-01 | 1986-12-01 | Rotational speed abnormality detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6390164U true JPS6390164U (en) | 1988-06-11 |
| JPH0738856Y2 JPH0738856Y2 (en) | 1995-09-06 |
Family
ID=31133712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986185256U Expired - Lifetime JPH0738856Y2 (en) | 1986-12-01 | 1986-12-01 | Rotational speed abnormality detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0738856Y2 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56123739U (en) * | 1980-02-22 | 1981-09-21 | ||
| JPS56132688U (en) * | 1980-02-29 | 1981-10-07 | ||
| JPS57138430U (en) * | 1981-02-24 | 1982-08-30 | ||
| JPS57203962A (en) * | 1981-06-09 | 1982-12-14 | Koko Res Kk | Detecting circuit for speed |
| JPS61105465A (en) * | 1984-10-30 | 1986-05-23 | Kokusan Denki Co Ltd | Detecting device for low rotating speed |
-
1986
- 1986-12-01 JP JP1986185256U patent/JPH0738856Y2/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56123739U (en) * | 1980-02-22 | 1981-09-21 | ||
| JPS56132688U (en) * | 1980-02-29 | 1981-10-07 | ||
| JPS57138430U (en) * | 1981-02-24 | 1982-08-30 | ||
| JPS57203962A (en) * | 1981-06-09 | 1982-12-14 | Koko Res Kk | Detecting circuit for speed |
| JPS61105465A (en) * | 1984-10-30 | 1986-05-23 | Kokusan Denki Co Ltd | Detecting device for low rotating speed |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0738856Y2 (en) | 1995-09-06 |
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