JPH0521174A - Lamp wick break position detecting device - Google Patents
Lamp wick break position detecting deviceInfo
- Publication number
- JPH0521174A JPH0521174A JP3060512A JP6051291A JPH0521174A JP H0521174 A JPH0521174 A JP H0521174A JP 3060512 A JP3060512 A JP 3060512A JP 6051291 A JP6051291 A JP 6051291A JP H0521174 A JPH0521174 A JP H0521174A
- Authority
- JP
- Japan
- Prior art keywords
- time
- lamp
- power supply
- disconnection
- power source
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Locating Faults (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、定電流形の交流電源
に一次側が直列接続された多数の変流器の二次側にそれ
ぞれ灯火を接続してなる直列点灯回路に係り、特に、灯
火の断芯が発生したときに、どの灯火が断芯したか、い
わゆる、断芯位置を検出する灯火断芯位置検出装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a series lighting circuit in which a lamp is connected to the secondary side of a large number of current transformers whose primary side is connected in series to a constant current type AC power source. The present invention relates to a lamp burn-out position detecting device that detects a burn-out position, that is, which light burns out when the burn-out occurs.
【０００２】[0002]
【従来の技術】空港の滑走路の照明にはこの種の直列点
灯回路が用いられている。この直列点灯回路には、多数
の灯火のうちで、どれが断芯したか、すなわち、断芯位
置を検出する灯火断芯位置検出装置が設けられている。2. Description of the Related Art A series lighting circuit of this kind is used for lighting an airport runway. This series lighting circuit is provided with a lamp burn-out position detecting device that detects which of the many lights has burned out, that is, the burn-out position.
【０００３】従来の灯火断芯位置検出装置として、灯火
毎にそれぞれ断芯を検出して変流器の二次側を開閉制御
する端末部を設けると共に、交流電源側には、交流電源
の出力電流波形および出力電圧波形の変化から灯火の断
芯を検出する断芯検出部と、この断芯検出部の出力に基
いて断芯位置を検出する親局とを設けたものがある。こ
の灯火断芯位置検出装置の概略動作を以下に説明する。As a conventional lamp disconnection position detecting device, a terminal portion for detecting disconnection of each lamp and controlling opening / closing of a secondary side of a current transformer is provided, and an output of an AC power source is provided on an AC power source side. 2. Description of the Related Art There is a system in which a burnout detecting unit that detects burnout of a lamp from changes in a current waveform and an output voltage waveform and a master station that detects a burnout position based on an output of the burnout detecting unit are provided. An outline of the operation of the lamp core position detecting device will be described below.
【０００４】先ず、多数の灯火のうちのいずれかが断芯
すると、この灯火が接続されている変流器の二次側は実
質的に開放状態となり、交流電源の出力電圧波形と出力
電流波形とが変化する。交流電源側の断芯検出部はこれ
らの波形変化から断芯を検出する。First, when one of a large number of lamps is disconnected, the secondary side of the current transformer to which this lamp is connected is practically opened, and the output voltage waveform and the output current waveform of the AC power supply. And change. The disconnection detection unit on the AC power supply side detects disconnection from these waveform changes.
【０００５】次に、断芯検出部が断芯を検出すると、親
局は交流電源の出力を灯火の点灯に支障がないとされる
時間だけ瞬間停止させる。Next, when the core disconnection detecting section detects the core disconnection, the master station momentarily stops the output of the AC power source for a time period during which the lighting of the lamp is not hindered.
【０００６】一方、断芯が発生した灯火に対応する端末
部でもこの灯火の断芯を検出し、一定の時間Ｔの経過後
に変流器の二次側を短絡し、短絡状態を保持する。そし
て、交流電源出力の瞬間停止を検出して、その時点から
灯火にそれぞれ割当てられた判定時間τn （ｎ＝1,2,3,
…）の経過後に、一定時間Ｔ（Ｔ＜τn ）だけ短絡を解
除する。On the other hand, the disconnection of the lamp is detected even at the terminal portion corresponding to the lamp having the disconnection, and after the elapse of a certain time T, the secondary side of the current transformer is short-circuited and the short-circuited state is maintained. Then, the instantaneous stop of the AC power supply output is detected, and the determination time τ n (n = 1, 2, 3,
...), the short circuit is released for a fixed time T (T <τ n ).
【０００７】このとき、交流電源側の断芯検出部は上述
したと同様にして断芯（本明細書では変流器の二次側の
開放状態を含めて断芯という）を検出する。この断芯検
出に応じて、親局は交流電源出力の瞬間停止時点と、瞬
間停止以降の断芯検出時点との時間差から断芯した灯火
を判断する。At this time, the core disconnection detecting section on the AC power source side detects core disconnection (herein referred to as core disconnection including the opened state of the secondary side of the current transformer) in the same manner as described above. In response to this disconnection detection, the master station determines the disconnected lamp from the time difference between the momentary stop of the AC power supply output and the moment of disconnection detection after the momentary stop.
【０００８】[0008]
【発明が解決しようとする課題】上述した従来の灯火断
芯位置検出装置にあっては、交流電源出力を、例えば、
１サイクル期間だけ停止して、端末部および親局間の同
期信号としていた。従って、交流電源として商用電源を
用いたとすれば約20ミリセカンドに亘って電圧が降下
し、この繰返しによってフリッカ現象を招くという問題
があった。SUMMARY OF THE INVENTION In the above-mentioned conventional lamp core disconnection position detecting device, an AC power source output is, for example,
It was stopped for only one cycle period and used as a synchronization signal between the terminal unit and the master station. Therefore, if a commercial power supply is used as the AC power supply, the voltage drops for about 20 milliseconds, and this repetition causes a flicker phenomenon.
【０００９】この発明は上記の問題点を解決するために
なされたもので、多数の灯火のうち、どの灯火が断芯し
たかを、フリッカ現象を招くことなしに検出することの
できる灯火断芯位置検出装置を得ることを目的とする。The present invention has been made to solve the above-mentioned problems, and it is possible to detect which of a number of lamps has a core disconnection without causing a flicker phenomenon. The purpose is to obtain a position detection device.
【００１０】[0010]
【課題を解決するための手段】本発明は、定電流形の交
流電源に一次側が直列接続された多数の変流器の二次側
にそれぞれ接続された灯火の断芯位置を検出する灯火断
芯位置検出装置において、前記灯火毎に設けられ、対応
する灯火の断芯を検出して前記変流器の二次側を短絡
し、前記交流電源が同期信号を発生してから灯火により
それぞれ異なる判定時間の経過後に一定時間だけ短絡を
解除する端末部と、前記交流電源の出力電流波形および
出力電圧波形を監視し、これらの波形の変化から前記灯
火の断芯を検出する断芯検出部と、前記交流電源が同期
信号を発生する以前の前記断芯検出部の断芯検出に応じ
て前記交流電源の基本波の形状を一定の時間だけ高速で
変化させて前記同期信号とする電源制御部、前記交流電
源の同期信号発生時点とこれ以降の前記断芯検出部の断
芯検出時点との時間差に基いて断芯位置を判断する断芯
位置判断部を有する親局とを備えたものである。DISCLOSURE OF THE INVENTION The present invention is directed to a lamp cutoff for detecting the core-off position of a lamp connected to the secondary side of each of a number of current transformers whose primary side is connected in series to a constant current type AC power source. In the wick position detection device, provided for each of the lights, detects the disconnection of the corresponding light and short-circuits the secondary side of the current transformer, and after the AC power supply generates a synchronization signal, it differs depending on the light. A terminal unit that releases a short circuit for a certain period of time after the determination time elapses, an output current waveform and an output voltage waveform of the AC power source, and a core disconnection detection unit that detects core disconnection of the lamp from changes in these waveforms. A power supply control unit that changes the shape of the fundamental wave of the AC power supply at a high speed for a fixed time in response to the disconnection detection by the disconnection detection unit before the AC power supply generates a synchronization signal to obtain the synchronization signal. When the sync signal of the AC power supply is generated And those with a master station having a cross-sectional core position determination unit for determining the cross-sectional core position based on the time difference between the cross-sectional core detection time point of the cross-sectional core detector after this.
【００１１】[0011]
【作用】この発明においては、定電流形の交流電源の基
本波の形状を一定の時間だけ高速で変化させて親局およ
び端末間の同期信号としているので、交流電源出力を１
サイクル期間に亘って停止した場合に問題となったフリ
ッカ現象を抑えることができる。In the present invention, since the shape of the fundamental wave of the constant current type AC power supply is changed at high speed for a fixed time to be used as the synchronization signal between the master station and the terminal, the AC power supply output is 1
It is possible to suppress the flicker phenomenon which has become a problem when stopped for a cycle period.
【００１２】[0012]
【実施例】図１は本発明の一実施例の全体構成を示すブ
ロック図である。1 is a block diagram showing the overall construction of an embodiment of the present invention.
【００１３】同図において、交流電源１に接続された定
電流電源装置２は、サイリスタによる位相制御により一
定の電流を供給するもので、この電流が直列点灯回路５
に供給される。直列点灯回路５は一次側が直列接続され
た変流器ＣＴ1 ，ＣＴ2 ，…，ＣＴn と、これら変流器
の二次側にそれぞれ接続されいる灯火Ｌ1 ，Ｌ2 ，…，
Ｌn とでなり、このような構成により各灯火の輝度は一
定に維持される。また、変流器ＣＴ1 ，ＣＴ2 ，…，Ｃ
Ｔn の二次側には灯火の断芯を検出して回路を短絡し、
交流電源の基本波の形状が変化したとき、すなわち、同
期信号が送り込まれたとき灯火によりそれぞれ異なる判
定時間τn の経過後、一定時間Ｔだけ短絡を解除する端
末部Ｒ1 ，Ｒ2 ，…，Ｒn が接続されている。In the figure, a constant current power supply device 2 connected to an AC power supply 1 supplies a constant current by phase control by a thyristor, and this current is a series lighting circuit 5.
Is supplied to. The series lighting circuit 5 includes current transformers CT 1 , CT 2 , ..., CT n whose primary sides are connected in series, and lights L 1 , L 2 , ..., Which are respectively connected to the secondary sides of these current transformers.
L n, and the brightness of each lamp is kept constant by such a configuration. Also, the current transformers CT 1 , CT 2 , ..., C
On the secondary side of T n , the disconnection of the lamp is detected and the circuit is short-circuited,
When the shape of the fundamental wave of the AC power source changes, that is, when the synchronizing signal is sent, after the elapse of the determination times τ n that are different depending on the lights, the terminal units R 1 , R 2 , ... , R n are connected.
【００１４】一方、定電流電源装置２の出力経路に変流
器３および変圧器４が設けられ、各出力信号波形に基い
て断芯検出部６が断芯を検出して、断芯信号を親局７に
与える。この親局７はパルス信号発生部8Aを付帯する電
源制御部８および断芯位置判定部９で構成されている。
このうち、電源制御部８は断芯信号を受信したとき、一
定周期（例えば10分間またはそれ以下の数分間）毎に、
同期信号送信期間（例えば１サイクル時間）を決定し、
この同期信号送信期間中、パルス信号発生部8Aのパルス
に従って定電流電源装置２の出力を断続させるものであ
る。また、断芯位置判定部９はそれぞれ灯火毎に異なる
断芯位置検出用の判定時間τ1n，τ2n，…，τnn，を記
憶しておき、これらの時間と同期信号送信時刻を基準と
して断芯検出部６が断芯検出するまでの時間とを比較し
て断芯した灯火の位置を検出するものである。On the other hand, a current transformer 3 and a transformer 4 are provided in the output path of the constant current power supply device 2, and a core disconnection detecting section 6 detects core disconnection based on each output signal waveform and outputs a core disconnection signal. Give to the parent station 7. The master station 7 is composed of a power source control section 8 and a core position determining section 9 which are provided with a pulse signal generating section 8A.
Of these, when the power supply control unit 8 receives the disconnection signal, the power supply control unit 8 repeats at regular intervals (for example, 10 minutes or several minutes less than that)
Determine the sync signal transmission period (eg 1 cycle time),
During the synchronization signal transmission period, the output of the constant current power supply device 2 is intermittently switched according to the pulse of the pulse signal generation unit 8A. Further, the disconnection position determination unit 9 stores determination times τ 1n , τ 2n , ..., τ nn for detecting the disconnection position that differ for each lamp, and uses these times and the synchronization signal transmission time as a reference. The position of the broken lamp is detected by comparing with the time until the disconnection detecting unit 6 detects the disconnection.
【００１５】図１に示した端末部Ｒ1 ，Ｒ2 ，…，Ｒn
の内部構成はいずれも同一であり、端末部Ｒ1 を例にと
って図２を用いて説明する。変流器ＣＴ1 の二次側に、
灯火Ｌ1 に対してそれぞれ並列になるように過電圧検出
部21と短絡部27とが接続され、さらに、変流器26を介し
て変流器ＣＴ1 の二次電流に対する電流断検出部25が接
続されている。ここで、過電圧検出部21は、灯火Ｌ1 が
断芯して変流器ＣＴ1 の二次側に高電圧が発生した場合
に、これを検出して短絡部27に通知するものであり、電
流が流れ込まないように高インビータンスとなってい
る。短絡部27は、変流器ＣＴ1 の二次側を短絡するサイ
リスタ部22と、この短絡の解除を開始するまでの前記判
定時間τ1nに対応する時間τ1 を設定する時間設定部24
と、この時間の経過後、一定時間Ｔの間、短絡を解除す
るようにサイリスタ部22を制御する短絡制御部23とで構
成されている。時間設定部24に設定されている時間は、
それぞれ端末部Ｒ1 ，Ｒ2 ，…，Ｒn 毎にτ1 ＜τ2 ＜
…＜τn というように順次長さが異なっている。The terminal units R 1 , R 2 , ..., R n shown in FIG.
2 have the same internal configuration, and the terminal unit R 1 will be described as an example with reference to FIG. On the secondary side of the current transformer CT 1 ,
The overvoltage detection unit 21 and the short-circuit unit 27 are connected so as to be in parallel with the lamp L 1 , respectively, and further, the current interruption detection unit 25 for the secondary current of the current transformer CT 1 is connected via the current transformer 26. It is connected. Here, when the lamp L 1 is disconnected and a high voltage is generated on the secondary side of the current transformer CT 1 , the overvoltage detection unit 21 detects the high voltage and notifies the short-circuit unit 27 of it. High in beatance to prevent current from flowing in. The short-circuit unit 27 includes a thyristor unit 22 that short-circuits the secondary side of the current transformer CT 1 and a time setting unit 24 that sets the time τ 1 corresponding to the determination time τ 1n until the release of the short circuit is started.
And a short circuit control unit 23 that controls the thyristor unit 22 to release the short circuit for a certain time T after the elapse of this time. The time set in the time setting section 24 is
Τ 1 <τ 2 <for each of the terminal units R 1 , R 2 , ..., R n.
… <Τ n , and the lengths are sequentially different.
【００１６】上記のように構成された本実施例の動作
を、図３、図４のタイムチャートをも参照して以下に説
明する。The operation of the present embodiment configured as described above will be described below with reference to the time charts of FIGS. 3 and 4.
【００１７】先ず、灯火Ｌ1 が図３の時刻ｔ1 にて断芯
したとすると、変流器ＣＴ1 の二次側が開放に近い状態
となり過電圧が発生する。この過電圧を端末部Ｒ1 の過
電圧検出部21が検出し、短絡部27の短絡制御部23に通知
する。短絡制御部23はこの通知を受けると、図３(d) に
示すように、時刻ｔ1 からＴ時間を経過した時刻ｔ2 に
て、サイリスタ部22をオン状態にして変流器ＣＴ1 の二
次側を短絡させる。First, if the lamp L 1 is disconnected at time t 1 in FIG. 3, the secondary side of the current transformer CT 1 will be in a state close to an open state and an overvoltage will be generated. The overvoltage detection unit 21 of the terminal unit R 1 detects this overvoltage, and notifies the short circuit control unit 23 of the short circuit unit 27. Upon receiving this notification, the short-circuit control unit 23 turns on the thyristor unit 22 at time t 2 when T time has elapsed from time t 1 and turns on the current transformer CT 1 as shown in FIG. 3 (d). Short the secondary side.
【００１８】一方、灯火Ｌ1 が断芯したとき定電流電源
装置２から見た負荷インピーダンスが変化する。これに
より定電流電源装置２の出力電流および出力電圧の波形
が図３(a),(b) に示すように変化する。断芯検出部６は
この波形の変化に基いて灯火の断芯を検出し、図３(c)
に示すように、時刻ｔ1 に対して変流器ＣＴ1 の飽和時
間αだけ遅れた時刻から、時刻ｔ2 に対して断芯検出部
６の復帰に要する時間Ｔx だけ遅れた時刻まで断芯信号
を発生する。なお、この検出原理は、例えば、特公昭61
-15556号公報に開示され、公知であるのでその説明を省
略する。このように、断芯検出部６が灯火の断芯を検出
すると、電源制御部８がこの信号を受けて、図３(a),
(b) に示すように、時刻ｔ3 から時刻ｔ4 までの１サイ
クル期間、定電流電源装置２の出力を断続（以下、この
断続波形を同期信号という）させる。On the other hand, when the lamp L 1 is disconnected, the load impedance viewed from the constant current power supply 2 changes. As a result, the waveforms of the output current and the output voltage of the constant current power supply device 2 change as shown in FIGS. 3 (a) and 3 (b). The core disconnection detection unit 6 detects the core disconnection of the lamp based on the change in the waveform, and FIG.
As shown in FIG. 7, the time from the time delayed by the saturation time α of the current transformer CT 1 to the time t 1 to the time delayed from the time t 2 by the time T x required for the recovery of the core detection unit 6 is delayed. Generate core signal. The detection principle is, for example,
Since it is disclosed in Japanese Patent Publication No. -15556 and is publicly known, its explanation is omitted. In this way, when the core disconnection detection unit 6 detects the core disconnection of the lamp, the power supply control unit 8 receives this signal, and the power supply control unit 8 receives the signal shown in FIG.
As shown in (b), the output of the constant current power supply device 2 is interrupted (hereinafter, this intermittent waveform is referred to as a synchronization signal) for one cycle period from time t 3 to time t 4 .
【００１９】このように同期信号が出力されると変流器
ＣＴ1 の二次側の電流断検出部25がこれを検出して、短
絡制御部23に通知する。そこで、短絡制御部23は時刻ｔ
4 に対して時間設定部24に設定された判定時間τ1 が経
過すると、図３(d) に示すように、その時刻ｔ5 からＴ
時間を経過する時刻ｔ6 までサイリスタ部22をオフ状態
にして変流器ＣＴ1 の二次側を開放状態にする。When the synchronizing signal is output in this way, the current break detector 25 on the secondary side of the current transformer CT 1 detects this and notifies the short-circuit controller 23. Therefore, the short circuit control unit 23 sets the time t
And time setting section determines the time tau 1 which is set to 24 has elapsed relative to 4, as shown in FIG. 3 (d), T from the time t 5
The thyristor unit 22 is turned off until the time t 6 when time passes, and the secondary side of the current transformer CT 1 is opened.
【００２０】このように、変流器ＣＴ1 の二次側が開放
状態になれば、再び定電流電源装置２の出力電流および
出力電圧の波形が変化し、図３(c) に示すように、断芯
検出部６は時刻ｔ5 に対して飽和時間αだけ遅れた時点
から、時刻ｔ6 より時間Ｔx だけ遅れた時点まで断芯信
号を発生する。このとき、断芯位置判定部９は、電源制
御部８が同期信号を発生し終わる時刻ｔ4 から計時動作
を開始しており、時刻ｔ5 ＋αで断芯信号を受信するま
での時間があらかじめ内部に記憶している判定時間
τ1n，τ2n，…，τnn（各端末部Ｒ1 の時間設定部24に
記憶させた判定時間τ1 ，τ2 ，…，τn に対応する）
のいずれに一致するかを判定する。そして、判定時間τ
1nに一致しておれば灯火Ｌ1 が断芯したと判定する。As described above, when the secondary side of the current transformer CT 1 is opened, the waveforms of the output current and the output voltage of the constant current power supply device 2 change again, as shown in FIG. 3 (c). The disconnection detection unit 6 generates a disconnection signal from the time delayed by the saturation time α to the time t 5 to the time delayed by the time T x from the time t 6 . At this time, the disconnection position determination unit 9 starts the timing operation from time t 4 when the power supply control unit 8 finishes generating the synchronization signal, and the time until the disconnection signal is received at time t 5 + α is set in advance. Judgment times τ 1n , τ 2n , ..., τ nn (corresponding to the judgment times τ 1 , τ 2 , ..., τ n stored in the time setting unit 24 of each terminal R 1 )
Which of the two matches is determined. Then, the determination time τ
If it matches 1n , it is determined that the lamp L 1 is disconnected.
【００２１】図４は定電流電源装置２に同期信号を出力
させる電源制御部８の制御信号生成過程を示すタイムチ
ャートである。すなわち、電源制御部８は、(a) に示す
ように、交流電源のゼロクロス点を検知して時刻ｔ3 か
ら時刻ｔ4 までの１サイクル期間だけ「Ｌ」になる信号
を生成すると共に、(b) に示すパルス信号発生部8Aの出
力信号を入力し、これら二つの信号をオアゲートに加え
て(c) に示す制御信号を定電流電源装置２に加える。こ
れによって、図３(a),(b) に示す同期信号を発生させる
ことができる。FIG. 4 is a time chart showing a control signal generation process of the power supply control section 8 for outputting the synchronizing signal to the constant current power supply device 2. That is, as shown in (a), the power supply control unit 8 detects a zero-cross point of the AC power supply and generates a signal which becomes “L” only for one cycle period from time t 3 to time t 4. The output signal of the pulse signal generator 8A shown in (b) is input, these two signals are added to the OR gate, and the control signal shown in (c) is added to the constant current power supply device 2. As a result, the sync signals shown in FIGS. 3 (a) and 3 (b) can be generated.
【００２２】図５は本発明の他の実施例の主要部の構成
を示すブロック図である。これは図２に示した端末部Ｒ
1 の内部構成を変えたもので、端末部ＲＲ1 として示
す。図２の端末部Ｒ1 では断芯が発生したことを、過電
圧検出部21により変流器ＣＴ1 の二次側に発生した過電
圧を検出することによって検出していた。これに対し
て、この端末部ＲＲ1 では、断芯の発生により灯火Ｌ1
に流れていた電流が断たれることを、灯火Ｌ1 に直列接
続された変流器41を介して灯火電流断検出部42が検出し
て行う点が違っている。この実施例によっても上述した
と同様な断芯位置検出ができる。FIG. 5 is a block diagram showing the structure of the main part of another embodiment of the present invention. This is the terminal unit R shown in FIG.
The internal configuration of 1 is changed and shown as a terminal unit RR 1 . The occurrence of core disconnection at the terminal portion R 1 of FIG. 2 is detected by detecting the overvoltage generated at the secondary side of the current transformer CT 1 by the overvoltage detection portion 21. On the other hand, in this terminal portion RR 1 , the lamp L 1
The difference is that the lamp current interruption detector 42 detects the interruption of the current flowing in the lamp L through the current transformer 41 connected in series to the lamp L 1 . With this embodiment as well, the same disconnection position detection as described above can be performed.
【００２３】ところで、上記実施例では、電源制御部８
の出力信号レベルの「Ｌ」に対応して定電流電源装置２
からの出力電流および出力電圧は共に０にしているが、
一般に定電流電源装置２では灯火を点灯させるための電
源部と、断芯時に時間積分値を得るためのベース電流を
流す電源部とを備えているため、灯火用電源部のみ出力
を０にし、ベース用電源部の出力は０にしないようにし
てもよい。この場合の同期信号出力中の出力電流および
出力電圧の波形は図６に示すようになる。By the way, in the above embodiment, the power supply control unit 8
Corresponding to the output signal level "L" of the constant current power supply device 2
Both output current and output voltage from are set to 0,
In general, the constant current power supply device 2 includes a power supply unit for lighting a lamp and a power supply unit for supplying a base current for obtaining a time integrated value at the time of disconnection, so that only the power supply unit for the light is set to 0, The output of the base power supply unit may not be set to zero. The waveforms of the output current and the output voltage during the output of the synchronizing signal in this case are as shown in FIG.
【００２４】また、上記実施例では電源制御部８が内部
生成した信号とパルス信号発生部8Aの出力パルス信号と
の論理和信号によって定電流電源装置２を制御したが、
電源制御部８から図４(a) に示す信号を出力させ、パル
ス信号発生部8Aを定電流電源装置２の内部に設けて上述
したと同様な断続波形の同期信号を発生するようにする
こともできる。In the above embodiment, the constant current power supply device 2 is controlled by the logical sum signal of the signal internally generated by the power supply controller 8 and the output pulse signal of the pulse signal generator 8A.
The signal shown in FIG. 4 (a) is output from the power supply control unit 8 and the pulse signal generation unit 8A is provided inside the constant current power supply device 2 so as to generate a sync signal having an intermittent waveform similar to that described above. You can also
【００２５】さらにまた、上記実施例における定電流電
源装置２は出力位相を制御するスイッチング素子として
サイリスタを使用しているため、これを高速で断続させ
ることが困難な場合がある。その場合には、サイリスタ
に代えてＧＴＯやパワートランジスタ等のターンオフ可
能な素子またはリレー等を用いればよい。Furthermore, since the constant current power supply device 2 in the above embodiment uses the thyristor as the switching element for controlling the output phase, it may be difficult to connect or disconnect the thyristor at high speed. In that case, a turn-off element such as a GTO or a power transistor or a relay may be used instead of the thyristor.
【００２６】[0026]
【発明の効果】以上の説明によって明らかなようにこの
発明によれば、定電流形の交流電源から基本波の形状を
一定の時間だけ高速で変化させて親局および端末間の同
期信号としているので、交流電源出力を１サイクル期間
に亘って停止した場合に問題となったフリッカ現象を抑
えることができる。As is apparent from the above description, according to the present invention, the shape of the fundamental wave is changed from the constant current type AC power source at a high speed for a fixed time to form a synchronizing signal between the master station and the terminal. Therefore, it is possible to suppress the flicker phenomenon which is a problem when the AC power supply output is stopped for one cycle period.
【図１】本発明の一実施例の全体構成を示すブロック
図。FIG. 1 is a block diagram showing the overall configuration of an embodiment of the present invention.
【図２】本発明の一実施例の主要素の詳細な構成を示す
ブロック図。FIG. 2 is a block diagram showing a detailed configuration of main elements of one embodiment of the present invention.
【図３】本発明の一実施例の動作を説明するためのタイ
ムチャート。FIG. 3 is a time chart for explaining the operation of the embodiment of the present invention.
【図４】本発明の一実施例の動作を説明するためのタイ
ムチャート。FIG. 4 is a time chart for explaining the operation of the embodiment of the present invention.
【図５】本発明の他の実施例の主要素の詳細な構成を示
すブロック図。FIG. 5 is a block diagram showing a detailed configuration of main elements of another embodiment of the present invention.
【図６】本発明のもう一つ他の実施例に対応する同期信
号波形図。FIG. 6 is a waveform diagram of a sync signal corresponding to another embodiment of the present invention.
１ 交流電源 ２ 定電流電源装置 ５ 直列点灯回路 ６ 断芯検出部 ７ 親局 ８ 電源制御部 ９ 断芯位置判定部 ２１ 過電圧検出部 ２２ サイリスタ部 ２３ 短絡制御部 ２４ 時間設定部 ２５ 電流断検出部 Ｒn 端末部 ＣＴn 変流器 Ｌn 灯火1 AC power supply 2 Constant current power supply device 5 Series lighting circuit 6 Core breaking detection unit 7 Master station 8 Power supply control unit 9 Core breaking position determination unit 21 Overvoltage detection unit 22 Thyristor unit 23 Short circuit control unit 24 time setting unit 25 Current interruption detection unit R n terminal part CT n current transformer L n light
Claims (1)
れた多数の変流器の二次側にそれぞれ接続された灯火の
断芯位置を検出する灯火断芯位置検出装置において、 前記灯火毎に設けられ、対応する灯火の断芯を検出して
前記変流器の二次側を短絡し、前記交流電源が同期信号
を発生してから灯火によりそれぞれ異なる判定時間の経
過後に一定時間だけ短絡を解除する端末部と、 前記交流電源の出力電流波形および出力電圧波形を監視
し、これらの波形の変化から前記灯火の断芯を検出する
断芯検出部と、 前記交流電源が同期信号を発生する以前の前記断芯検出
部の断芯検出に応じて前記交流電源の基本波の形状を一
定の時間だけ高速で変化させて前記同期信号とする電源
制御部、前記交流電源の同期信号発生時点とこれ以降の
前記断芯検出部の断芯検出時点との時間差に基いて断芯
位置を判断する断芯位置判断部を有する親局と、 を備えたことを特徴とする灯火断芯位置検出装置。Claim: What is claimed is: 1. A lamp disconnection position for detecting the disconnection position of a lamp connected to the secondary side of a large number of current transformers whose primary side is connected in series to a constant current type AC power source. In the detection device, provided for each of the lights, short circuit the secondary side of the current transformer by detecting the disconnection of the corresponding lights, the AC power supply from generating a synchronization signal after the determination time different for each lamp A terminal unit that releases the short circuit for a certain period of time after the passage of the output current waveform and the output voltage waveform of the AC power supply, and a core disconnection detection unit that detects core disconnection of the lamp from changes in these waveforms, A power supply control unit that changes the shape of the fundamental wave of the AC power supply at a high speed for a fixed time in response to the disconnection detection of the core disconnection detection unit before the AC power supply generates a synchronization signal, and the synchronization signal is generated. When the sync signal of the AC power supply is generated And a master station having a centering position determination unit that determines the centering position based on a time difference from the centering detection time of the centering detection unit thereafter, and a lamp centering position detection device characterized by comprising: ..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3060512A JP2760667B2 (en) | 1991-03-25 | 1991-03-25 | Light core position detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3060512A JP2760667B2 (en) | 1991-03-25 | 1991-03-25 | Light core position detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0521174A true JPH0521174A (en) | 1993-01-29 |
| JP2760667B2 JP2760667B2 (en) | 1998-06-04 |
Family
ID=13144443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3060512A Expired - Fee Related JP2760667B2 (en) | 1991-03-25 | 1991-03-25 | Light core position detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2760667B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5514606A (en) * | 1994-07-05 | 1996-05-07 | Motorola | Method of fabricating high breakdown voltage FETs |
-
1991
- 1991-03-25 JP JP3060512A patent/JP2760667B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5514606A (en) * | 1994-07-05 | 1996-05-07 | Motorola | Method of fabricating high breakdown voltage FETs |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2760667B2 (en) | 1998-06-04 |
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