JPH01198248A - Monitor for rectification of dc machine - Google Patents
Monitor for rectification of dc machineInfo
- Publication number
- JPH01198248A JPH01198248A JP1951988A JP1951988A JPH01198248A JP H01198248 A JPH01198248 A JP H01198248A JP 1951988 A JP1951988 A JP 1951988A JP 1951988 A JP1951988 A JP 1951988A JP H01198248 A JPH01198248 A JP H01198248A
- Authority
- JP
- Japan
- Prior art keywords
- rectification
- set value
- value
- comparator
- brush
- 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
- 238000012806 monitoring device Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
Landscapes
- Dc Machiner (AREA)
- Motor Or Generator Current Collectors (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は整流の異常を検出する直流機の整流監視装置に
関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a rectification monitoring device for a DC machine that detects an abnormality in rectification.
（従来の技術）
従来、直流機の整流状態を監視するには定期的に目視に
よっており、連続的な整流監視装置がなく、点検間隔に
よっては整流の悪化が進行し、整流子の荒損等の不具合
を生ずることがあった。(Prior art) Conventionally, the rectification status of a DC machine has been monitored periodically by visual observation, but there is no continuous rectification monitoring device, and depending on the inspection interval, the commutation may deteriorate, resulting in damage to the commutator, etc. This may cause problems.
（発明が解決しようとする課題）
上記のように、従来の目視による整流の監視では断続的
であるため、確実な整流監視はできない。(Problems to be Solved by the Invention) As described above, since conventional visual rectification monitoring is intermittent, reliable rectification monitoring cannot be performed.
よって、本発明の目的は、連続的で確実な整流監視を行
なう装置を実現することにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to realize a device that performs continuous and reliable commutation monitoring.
（課題を解決するための手段）
本発明は、前記課題を解決するための手段として、整流
子と刷子の接触部の温度を非接触式温度センサで連続的
に検出しこの信１号が予め計算された設定値より高い場
合に整流不良による温度上昇と判断して警報を発する直
流機の整流監視装置を提供する。(Means for Solving the Problems) As a means for solving the above problems, the present invention continuously detects the temperature of the contact area between the commutator and the brush with a non-contact temperature sensor, and this signal 1 is detected in advance. To provide a rectification monitoring device for a DC machine that determines that a temperature rise is due to poor rectification and issues an alarm when the temperature is higher than a calculated set value.
（作 用）
本発明の直流機の整流監視装置は、負荷状態により連続
的に変化する電機子電流と周囲温度から設定値計算回路
において連続的に設定値を変化させ、比較器において検
出信号と比較し、検出された信号が設定値よりもある裕
度をもって高い場合に整流不良による温度上昇と判断し
て警報信号を発生させるように作用する。(Function) The rectification monitoring device for a DC machine of the present invention continuously changes the set value in the set value calculation circuit from the armature current and ambient temperature that continuously change depending on the load condition, and converts the set value into a detection signal in the comparator. When the detected signal is higher than the set value with a certain margin, it is determined that the temperature has increased due to poor rectification, and an alarm signal is generated.
（実施例） 次に本発明の一実施例を図面に示す。(Example) Next, an embodiment of the present invention is shown in the drawings.
変動する負荷条件の下に運転している直流機電機子の整
流子１と刷子２の接触面に近接して非接触式温度センサ
３を設置し、検出回路４により検出された温度に相当す
る信号を増幅器５を介して増幅して比較器６に入力する
。A non-contact temperature sensor 3 is installed close to the contact surface between the commutator 1 and the brush 2 of a DC machine armature operating under fluctuating load conditions, and the temperature corresponds to that detected by the detection circuit 4. The signal is amplified via an amplifier 5 and input to a comparator 6.
一方、設定値計算回路８において負荷状態により変化す
る電機子電流９と周囲温度１１の信号とから連続的に設
定値７を計算し比較器６に入力する。On the other hand, a set value calculation circuit 8 continuously calculates a set value 7 from signals of the armature current 9 and the ambient temperature 11, which vary depending on the load condition, and inputs it to the comparator 6.
増幅器５の出力信号と設定値７とを比較器６にて比較し
、増幅器５の出力信号すなわち整流子１と刷子２の接触
面の温度に相当する信号が設定値７よりもある裕度をこ
えて嘉い場合には整流不良による温度上昇と判断して比
較器６より警報信号１０を発生させる。A comparator 6 compares the output signal of the amplifier 5 and the set value 7, and determines whether the output signal of the amplifier 5, that is, the signal corresponding to the temperature of the contact surface between the commutator 1 and the brush 2, is higher than the set value 7 by a certain margin. If the temperature exceeds that level, it is determined that the temperature has increased due to poor rectification, and the comparator 6 generates an alarm signal 10.
以上説明のように、本発明によれば変動する負荷条件お
よび周囲温度の下で直流機の整流状態を連続的に監視し
、整流不良が発生した場合に速かに検出し警報を発し、
事故に拡大することを未然に防ぐことができる。As explained above, according to the present invention, the rectification state of a DC machine is continuously monitored under varying load conditions and ambient temperature, and when a rectification failure occurs, it is quickly detected and an alarm is issued.
This can prevent the situation from escalating into an accident.
図面は本発明の一実施例を示す整流監視装置の構成図で
ある。 ′
３・・・非接触式温度センサ ４・・・検出回路５・・
・増幅器 ６・・・比較器７・・・設定値
８・・・設定値計算回路９・・・電機子
電流 １０・・・警報信号１１・・・周囲温度
代理人 弁理士 則 近 憲 佑The drawing is a block diagram of a rectification monitoring device showing an embodiment of the present invention. '3...Non-contact temperature sensor 4...Detection circuit 5...
・Amplifier 6... Comparator 7... Set value 8... Set value calculation circuit 9... Armature current 10... Alarm signal 11... Ambient temperature agent Patent attorney Noriyuki Chika
Claims (1)
に近接して設置される非接触式温度センサと、この非接
触式温度センサの検出信号を増幅する増幅器と、電機子
電流および周囲温度によって設定値を計算する設定値計
算回路と、この設定値計算回路及び前記増幅器の出力信
号にて計算された信号を比較し警報を出す比較器とから
なる直流機の整流監視装置。A brush in contact with the commutator, a non-contact temperature sensor installed near the brush and the commutator, an amplifier for amplifying the detection signal of the non-contact temperature sensor, and an armature current and ambient temperature sensor. A rectification monitoring device for a DC machine, comprising a set value calculation circuit that calculates a set value based on temperature, and a comparator that compares a signal calculated from the set value calculation circuit and the output signal of the amplifier and issues an alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1951988A JPH01198248A (en) | 1988-02-01 | 1988-02-01 | Monitor for rectification of dc machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1951988A JPH01198248A (en) | 1988-02-01 | 1988-02-01 | Monitor for rectification of dc machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01198248A true JPH01198248A (en) | 1989-08-09 |
Family
ID=12001593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1951988A Pending JPH01198248A (en) | 1988-02-01 | 1988-02-01 | Monitor for rectification of dc machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01198248A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008148583A1 (en) * | 2007-06-07 | 2008-12-11 | Pantrac Gmbh | Method and diagnosis system for monitoring a slip ring system in electric machines |
-
1988
- 1988-02-01 JP JP1951988A patent/JPH01198248A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008148583A1 (en) * | 2007-06-07 | 2008-12-11 | Pantrac Gmbh | Method and diagnosis system for monitoring a slip ring system in electric machines |
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