JPH0757167A - Lifetime alarm device - Google Patents
Lifetime alarm deviceInfo
- Publication number
- JPH0757167A JPH0757167A JP23435093A JP23435093A JPH0757167A JP H0757167 A JPH0757167 A JP H0757167A JP 23435093 A JP23435093 A JP 23435093A JP 23435093 A JP23435093 A JP 23435093A JP H0757167 A JPH0757167 A JP H0757167A
- Authority
- JP
- Japan
- Prior art keywords
- electronic device
- life
- electrolytic capacitor
- change
- lifetime
- 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
Landscapes
- Audible And Visible Signals (AREA)
- Emergency Alarm Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は電子装置の寿命を警報す
る装置に関するBACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for warning the life of electronic devices.
【０００２】[0002]
【従来の技術】電子装置が故障すると、当該電子装置が
果たすべき本来の機能が停止するだけでなく、故障が例
えば火災等、第２の事故を引き起こす可能性があるので
特定部品の温度上昇や、特定の電流経路に流れる過電流
等を検出しサーモスタットやヒューズ等で当該電子装置
内の電流経路の一部を遮断し第２の事故を防止する。2. Description of the Related Art When an electronic device fails, not only the original function of the electronic device is stopped but also the failure may cause a second accident such as a fire. A second accident is prevented by detecting an overcurrent or the like flowing in a specific current path and shutting off a part of the current path in the electronic device with a thermostat or a fuse.
【０００３】電子装置が故障すると、当該電子装置を修
理あるいは代替装置に交換する迄の期間は当該電子装置
が果たすべき本来の機能も停止することによる機会損失
が生ずる。機会損失を最小に抑制するため、当該電子装
置の修理あるいは代替装置への交換は可能な限り迅速に
行う必要がある。代替部品または代替装置を常に在庫
し、故障修理技術者を待機させる必要がある。When an electronic device fails, an opportunity loss occurs due to the fact that the original function of the electronic device is stopped until the electronic device is repaired or replaced with an alternative device. In order to minimize opportunity loss, the electronic device must be repaired or replaced with a replacement device as quickly as possible. Alternate parts or equipment should always be in stock and have a technician on hand.
【０００４】故障により他に与える損害が著しく大きい
電子装置の場合には、所定の動作時間が経過した時、当
該電子装置が寿命に達したと判断し迅速に交換すること
も行われている。しかし、寿命を使用経過時間から判断
する場合、電子装置は使用条件によりその寿命は著しく
影響を受けるため、装置寿命と判定する経過時間は装置
本来の寿命時間よりも十分短く設定する必要があり、こ
れに係わる代替部品または代替装置を常に在庫し、故障
修理技術者を待機させる必要がある。In the case of an electronic device which causes a great deal of damage to others due to a failure, it is also determined that the electronic device has reached the end of its life when a predetermined operation time has elapsed, and the electronic device is quickly replaced. However, when judging the life from the elapsed use time, the life of the electronic device is significantly affected by the usage conditions, so the elapsed time to be judged as the device life must be set sufficiently shorter than the original life time of the device. It is necessary to always stock substitute parts or substitute devices related to this and have a repair engineer on standby.
【０００５】[0005]
【発明が解決しようとする課題】これ迄、電子装置が正
常動作時に正常を、あるいは故障時に故障を表示するこ
と、さらに故障箇所を発光ダイオード等で表示すること
はあった。しかし、正常時に故障を予測し表示する電子
装置はなかった。Heretofore, there have been cases where an electronic device indicates normality during normal operation or indicates a failure at the time of failure, and further indicates a failure location by a light emitting diode or the like. However, there is no electronic device that predicts and displays a failure in a normal state.
【０００６】本発明の目的は電子装置に内蔵される電解
コンデンサが消耗品であり、当該電子装置に内蔵される
電子部品の中で最も寿命が短いことに着目し、当該電子
装置の正常動作時に当該電解コンデンサの消耗状況を監
視し当該電子装置自体の寿命を予測することである。It is an object of the present invention to pay attention to the fact that the electrolytic capacitor incorporated in the electronic device is a consumable item and has the shortest life among the electronic components incorporated in the electronic device. Monitoring the consumption of the electrolytic capacitor and predicting the life of the electronic device itself.
【０００７】[0007]
【課題を解決するための手段】交流を整流し平滑するた
めに用いられる電解コンデンサは、使用経過時間と共に
電解コンデンサ内の電解液が減少し容量値は初期値から
徐々に小さくなる、いわゆるドライアップ現象による消
耗部品である。An electrolytic capacitor used for rectifying and smoothing an alternating current is a so-called dry-up in which the electrolytic solution in the electrolytic capacitor decreases with the lapse of time and the capacitance value gradually decreases from the initial value. It is a consumable part due to a phenomenon.
【０００８】その結果、整流平滑効果が不足し、得られ
た直流電圧に含まれるリップル成分の増加によって電子
装置の正常な動作を維持することが不可能になると、電
子装置は寿命に達したことになる。そこで、平滑用電解
コンデンサの両端のリップル電圧を検出する手段と当該
リップル電圧を基準値と比較し電子装置の寿命を判定す
る手段とを具える。As a result, when the rectifying / smoothing effect is insufficient and the normal operation of the electronic device cannot be maintained due to the increase of the ripple component contained in the obtained DC voltage, the electronic device has reached the end of its life. become. Therefore, a means for detecting the ripple voltage across the smoothing electrolytic capacitor and a means for comparing the ripple voltage with a reference value to determine the life of the electronic device are provided.
【０００９】さらに負荷状態、即ち負荷インピーダンス
が変化した場合にも当該電解コンデンサのリップル電圧
は変化する。負荷インピーダンスの変化を負荷電流の変
化として検出し寿命を判定する基準値を移動させる手段
とを具える。Further, the ripple voltage of the electrolytic capacitor also changes when the load condition changes, that is, when the load impedance changes. A means for detecting a change in load impedance as a change in load current and moving a reference value for determining the life.
【００１０】さらに当該寿命判定結果を光学的変化、あ
るいは音響的変化、あるいは機械的変化などの方法で表
示する手段とを具える。Further, there is provided means for displaying the life judgment result by a method such as an optical change, an acoustic change, or a mechanical change.
【００１１】[0011]
【作用】電子装置に内蔵される電解コンデンサ両端のリ
ップル電圧を検出し、正常動作が不可能な値に近づいた
とき光学的変化、あるいは音響的変化、あるいは機械的
変化などの方法で当該電子装置の寿命または補修の必要
性を表示することができる。その結果、当該電子装置の
停止事故を防止し維持管理を容易にする。The ripple voltage across the electrolytic capacitor built into the electronic device is detected, and when the value approaches a value where normal operation is impossible, the electronic device is optically or acoustically or mechanically changed. It can indicate the service life or need for repair. As a result, a stop accident of the electronic device is prevented and maintenance is facilitated.
【００１２】[0012]
【実施例】以下、図面を参照して本発明の実施例を詳細
に説明する。 第１の実施例 図１は本発明の第１の実施例で、交流ラインを整流後の
平滑を目的とする電解コンデンサＣ１の一端Ａに生ずる
リップル電圧をコンデンサＣ２を介し、抵抗Ｒ１および
抵抗Ｒ２の比で分圧しリップル電圧情報をＢ点に得る。
抵抗Ｒ３、Ｒ４はＢ点のリップル電圧情報を正側にバイ
アスするためである。可変抵抗器ＶＲ２、ダイオードＤ
１、コンデンサＣ３を経由しＢ点のリップル電圧情報を
直流電圧に変換する。当該直流電圧は電解コンデンサＣ
１の一端Ａに生ずるリップル電圧にほぼ正比例し、Ｃ１
の容量値が減少すると増加する。図２にＡ点、Ｂ点の波
形を示す。Embodiments of the present invention will now be described in detail with reference to the drawings. First Embodiment FIG. 1 is a first embodiment of the present invention, in which a ripple voltage generated at one end A of an electrolytic capacitor C 1 for smoothing after rectifying an AC line is passed through a capacitor C 2 and a resistor R 1 And the voltage is divided by the ratio of the resistance R 2 to obtain the ripple voltage information at the point B.
This is because the resistors R 3 and R 4 bias the ripple voltage information at the point B to the positive side. Variable resistor VR 2 , diode D
1. The ripple voltage information at the point B is converted into a DC voltage via the capacitor C 3 . The DC voltage is electrolytic capacitor C
1 is almost directly proportional to the ripple voltage generated at one end A, and C 1
Increases as the capacity value of decreases. FIG. 2 shows the waveforms at points A and B.
【００１３】比較器１の一端にリップル情報を含む当該
直流電圧を与え、比較器１の他端に与えた寿命と判定す
る基準直流電圧と比較する。リップル情報を含む当該直
流電圧が基準直流電圧を越えた時、比較器１は出力状態
を変化させ寿命を警報する。The DC voltage containing ripple information is applied to one end of the comparator 1 and compared with the reference DC voltage applied to the other end of the comparator 1 for determining the life. When the DC voltage including the ripple information exceeds the reference DC voltage, the comparator 1 changes the output state to warn the life.
【００１４】第２の実施例 図３に負荷条件即ち負荷インピーダンスが変化に応答す
る寿命警報装置を示す。負荷インピーダンスが変化する
と電解コンデンサＣ１の一端Ａに生ずるリップル電圧も
変化する。負荷インピーダンスの変化を負荷電流の変化
として抵抗Ｒ７の電圧降下で検出する。検出した負荷電
流情報を増幅器２で増幅した後、ダイオードＤ２、コン
デンサＣ４で点Ｃに直流電圧を得る。Second Embodiment FIG. 3 shows a life warning device which responds to changes in load conditions, that is, load impedance. When the load impedance changes, the ripple voltage generated at one end A of the electrolytic capacitor C 1 also changes. The change in load impedance is detected as the change in load current by the voltage drop across the resistor R 7 . After amplifying the detected load current information by the amplifier 2, a DC voltage is obtained at the point C by the diode D 2 and the capacitor C 4 .
【００１５】当該直流電圧の変化は負荷電流には正比例
するが、電解コンデンサＣ１の一端Ａに生ずるリップル
電圧の変化よりも大きい。そこで例えば電解効果形トラ
ンジスタＴ１、抵抗Ｒ１３による非線形回路を介して当
該直流電圧を圧縮し、点Ｄに電解コンデンサＣ１の一端
Ａに生ずるリップル電圧に比例する負荷電流情報を得
る。図４に負荷電流情報特性を示す。Although the change in the DC voltage is directly proportional to the load current, it is larger than the change in the ripple voltage generated at one end A of the electrolytic capacitor C 1 . Therefore, for example, the DC voltage is compressed via a non-linear circuit including the electrolytic effect transistor T 1 and the resistor R 13, and load current information proportional to the ripple voltage generated at the one end A of the electrolytic capacitor C 1 is obtained at the point D. FIG. 4 shows the load current information characteristic.
【００１６】当該情報を寿命と判定する基準電圧として
比較器１の一端に与える。電解コンデンサＣ１の一端Ａ
に生ずるリップル電圧を検出し比較器１の他の一端に与
える過程は実施例１と同じであるから省略する。The information is applied to one end of the comparator 1 as a reference voltage for determining the life. One end A of electrolytic capacitor C 1
Since the process of detecting the ripple voltage generated at 1 and applying it to the other end of the comparator 1 is the same as that of the first embodiment, the description thereof is omitted.
【００１７】第３の実施例 図５に寿命を光学的変化で警報する例を示す。比較器１
の出力変化をナンドゲート４〜７で構成されるマルチバ
イブレータに与える。図５の例ではナンドゲート４の出
力端子がハイになると抵抗Ｒ１８、コンデンサＣ５で決
まる時定数によりナンドゲート５とナンドゲート４の接
続点からハイ、ローを交互に繰り返す出力が得られる。Third Embodiment FIG. 5 shows an example in which the life is warned by an optical change. Comparator 1
To the multivibrator composed of NAND gates 4-7. In the example of FIG. 5, when the output terminal of the NAND gate 4 becomes high, an output that alternately repeats high and low is obtained from the connection point of the NAND gate 5 and the NAND gate 4 due to the time constant determined by the resistor R 18 and the capacitor C 5 .
【００１８】図５の例では抵抗Ｒ１９を介し発光ダイオ
ードＤ３を点滅させ寿命を警報する。発光ダイオードの
代わりにスピーカを用いて音響的に、または機械的手段
で寿命を警報することもできる。電子装置の負荷を利用
して警報することもできる。In the example of FIG. 5, the light emitting diode D 3 is flickered through the resistor R 19 to warn the end of life. A speaker may be used in place of the light emitting diode to warn of the life acoustically or by mechanical means. It is also possible to use the load of the electronic device to give an alarm.
【００１９】[0019]
【発明の効果】以上のように、本発明によれば、電子装
置の寿命を決定する最大要因である電解コンデンサの寿
命を当該電子装置の稼働中に正確に、事前に予測するこ
とによって当該電子装置の寿命による停止事故を防止
し、かつ当該電子装置を使用環境に依らずほとんど寿命
直前まで使用することで、当該電子装置の機能停止、修
理、交換さらに廃棄に係る費用を抑制することが可能と
なる。As described above, according to the present invention, the life of an electrolytic capacitor, which is the largest factor that determines the life of an electronic device, can be accurately predicted in advance while the electronic device is in operation. Preventing stoppage accidents due to the life of the device and using the electronic device almost until the end of its life regardless of the operating environment, it is possible to suppress costs related to functional stoppage, repair, replacement and disposal of the electronic device. Becomes
【図１】本発明第１の実施例の回路図である。FIG. 1 is a circuit diagram of a first embodiment of the present invention.
【図２】リップル電圧情報波形図である。FIG. 2 is a ripple voltage information waveform diagram.
【図３】本発明第２の実施例の回路図である。FIG. 3 is a circuit diagram of a second embodiment of the present invention.
【図４】負荷電流情報特性図である。FIG. 4 is a load current information characteristic diagram.
【図５】本発明第３の実施例の回路図である。FIG. 5 is a circuit diagram of a third embodiment of the present invention.
ＦＣ 制御回路 ＺＬ 負荷インピーダンス １ 比較器 ２，３ 増幅器 ４〜７ ナンドゲート Ｔ１ トランジスタ Ｄ１，Ｄ２ ダイオード Ｄ３ 発光ダイオード ＶＲ１ 可変抵抗器 Ｒ１〜Ｒ１９抵抗FC control circuit Z L load impedance 1 comparator 2,3 amplifier 4-7 NAND gate T 1 transistor D 1 , D 2 diode D 3 light emitting diode VR 1 variable resistor R 1 -R 19 resistance
Claims (3)
流を平滑する湿式電解コンデンサ（以下、電解コンデン
サと記す）のリップル電圧を検出する手段と、当該リッ
プル電圧の大きさに応答し、電子装置の寿命を判定する
手段とを具えたことを特徴とする寿命警報装置1. A means for detecting a ripple voltage of a wet electrolytic capacitor (hereinafter, referred to as an electrolytic capacitor) for smoothing a pulsating flow that can rectify an alternating current built in an electronic device, and a response to the magnitude of the ripple voltage. And a life warning device comprising means for determining the life of the electronic device.
変化に応答し電子装置に内蔵された電解コンデンサの寿
命を判定する基準電圧値を移動させる手段とを具えたこ
とを特徴とする寿命警報装置2. The device according to claim 1, further comprising means for moving a reference voltage value for determining the life of an electrolytic capacitor incorporated in the electronic device in response to a change in load current. Alarm device
結果を光学的変化、あるいは音響的変化、あるいは機械
的変化などの方法によって電子装置の寿命情報を表示す
る手段とを具えたことを特徴とする寿命警報装置3. The device according to claim 1, further comprising means for displaying the life information of the electronic device by a method such as an optical change, an acoustic change, or a mechanical change of the result of the life judgment. Characteristic life warning device
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23435093A JPH0757167A (en) | 1993-08-17 | 1993-08-17 | Lifetime alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23435093A JPH0757167A (en) | 1993-08-17 | 1993-08-17 | Lifetime alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0757167A true JPH0757167A (en) | 1995-03-03 |
Family
ID=16969625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23435093A Pending JPH0757167A (en) | 1993-08-17 | 1993-08-17 | Lifetime alarm device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0757167A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2409281A (en) * | 2003-12-19 | 2005-06-22 | Bosch Gmbh Robert | Capturing wear in controllers |
| JP2007240450A (en) * | 2006-03-10 | 2007-09-20 | Fujitsu General Ltd | Deterioration detection circuit for smoothing capacitor, and electronic equipment provided therewith |
-
1993
- 1993-08-17 JP JP23435093A patent/JPH0757167A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2409281A (en) * | 2003-12-19 | 2005-06-22 | Bosch Gmbh Robert | Capturing wear in controllers |
| GB2409281B (en) * | 2003-12-19 | 2007-03-28 | Bosch Gmbh Robert | Method and device for capturing wear in controllers |
| JP2007240450A (en) * | 2006-03-10 | 2007-09-20 | Fujitsu General Ltd | Deterioration detection circuit for smoothing capacitor, and electronic equipment provided therewith |
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