JP2010137763A - Traffic light control system - Google Patents

Traffic light control system Download PDF

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JP2010137763A
JP2010137763A JP2008317116A JP2008317116A JP2010137763A JP 2010137763 A JP2010137763 A JP 2010137763A JP 2008317116 A JP2008317116 A JP 2008317116A JP 2008317116 A JP2008317116 A JP 2008317116A JP 2010137763 A JP2010137763 A JP 2010137763A
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signal
filament
time
lamp
traffic light
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JP4762300B2 (en
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Kanzo Seki
貫造 関
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Kyosan Electric Manufacturing Co Ltd
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Kyosan Electric Manufacturing Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To improve economic efficiency by detecting the blowout of a common filament by a simple structure without using a control cable and an input circuit for sending a signal indicating the blowout of the common filament from a signal light to a traffic light control device. <P>SOLUTION: An output relay FDR of a blowout detector 10 detecting the blowout of the common filament 5 has low-rate discharge characteristics of a restoration time Td. A signal light control part 2 starts to count an off-time when the light current detection signal inputted from a current detector 4 is switched off with the light control output turned on while a power source period signal is detected to be normal, and detects the blowout of the common filament 5 when the continuous time of the light current detection signal off-state exceeds the power switch-over time Ts, and coincides with the restoration time Td of the output relay FDR of the blowout detector 10. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

この発明は、常用フィラメントと予備フィラメントを有する信号灯の常用フィラメント断芯時に、断芯検出リレーの復旧接点で予備フィラメントに切換えて使用する鉄道信号システムの信号機制御システム、特に常用フィラメントの断芯検出に関するものである。   The present invention relates to a traffic signal control system of a railway signal system that is used by switching to a spare filament at a restoration contact of a breakage detection relay when a regular filament of a signal lamp having a regular filament and a spare filament is broken, and particularly relates to breakage detection of a regular filament. Is.

一般に、日本の鉄道信号システムにおいては、特許文献１や特許文献２に示すように、信号灯の信号電球は寿命差を有するメインフィラメントとサブフィラメントの二重フィラメントを有し、常時、並列接続して使用されている。この信号灯の点灯／滅灯を制御する信号機制御装置は、信号灯に流れる電流が所定の値に減少したことを検知して一方のフィラメントが断芯したことを検出している。   In general, in Japanese railway signal systems, as shown in Patent Document 1 and Patent Document 2, a signal light bulb has a main filament and a sub-filament double filament that have a difference in life, and are always connected in parallel. in use. The traffic light control device that controls lighting / extinction of the signal lamp detects that the current flowing through the signal lamp has decreased to a predetermined value and detects that one of the filaments is broken.

一方、海外の鉄道信号システムにおいては、信号灯は常用フィラメントが断芯時に、内蔵している断芯検出リレーの復旧接点で予備フィラメントに切換えて使用する構成を備えているものがある。この場合、信号機制御装置は、信号灯に内蔵している断芯検出リレーの第２復旧接点からの信号を入力して常用フィラメントの断芯を検出している。   On the other hand, in some overseas railway signal systems, a signal lamp has a configuration in which a normal filament is switched to a spare filament at a restoration contact of a built-in disconnection detection relay when the filament is disconnected. In this case, the traffic light control device detects the breakage of the regular filament by inputting a signal from the second recovery contact of the breakage detection relay built in the signal lamp.

例えば図５のブロック図に示すように、信号機制御装置１ａは、常用フィラメント５と予備フィラメント６が設けられた信号電球７を有する信号灯８ａを点灯／滅灯させる指令を灯制御入力とし、信号灯交流電源９からの電圧により信号灯８ａを制御する。また、信号灯８ａ内の断芯検出器１０で常用フィラメント５の断芯を検出したとき、断芯検出器１０の出力リレーＦＤＲのコイル電流が遮断されて出力リレーＦＤＲの第１復旧接点ＦＤＲ１と第２復旧接点ＦＤＲ２が導通すると、第２復旧接点ＦＤＲ２からの信号を入力して灯制御入力条件と照合して常用フィラメント断芯と判定し、信号灯８ａの制御状態等とともに常用フィラメント５の断芯警報を表示出力する。一方、信号灯８ａは断芯検出器１０の出力リレーＦＤＲの第１復旧接点ＦＤＲ１を介して予備フィラメント６を通電して再点灯する。
特開平５−８７２９号公報 特開平１０−２６４８１５号公報 For example, as shown in the block diagram of FIG. 5, the traffic light control apparatus 1a uses a lamp control input as a lamp control input command to turn on / off a signal lamp 8a having a signal bulb 7 provided with a regular filament 5 and a spare filament 6. The signal lamp 8a is controlled by the voltage from the power source 9. Further, when the breakage detector 10 in the signal lamp 8a detects the breakage of the regular filament 5, the coil current of the output relay FDR of the breakage detector 10 is cut off and the first restoration contact FDR1 of the output relay FDR and the first 2 When the restoration contact FDR2 is turned on, a signal from the second restoration contact FDR2 is input and collated with the lamp control input condition to determine that the filament is broken, and along with the control state of the signal lamp 8a, the breakage alarm of the filament 5 Is output. On the other hand, the signal lamp 8a is turned on again by energizing the spare filament 6 via the first restoration contact FDR1 of the output relay FDR of the disconnection detector 10.
JP-A-5-8729 Japanese Patent Laid-Open No. 10-264815

前記のように、信号電球７の常用フィラメント５が断芯したときに、断芯検出器１０の出力リレーＦＤＲの第２復旧接点ＦＤＲ２の導通を条件として信号機制御装置１ａで常用フィラメント５の断芯を判定していると、第２復旧接点ＦＤＲ２からの信号を入力するための制御ケーブル１３ａ，１３ｂと入力回路が必要になり、装置全体の構成が複雑になるとともに施工が容易でないという短所がある。   As described above, when the service filament 5 of the signal bulb 7 is disconnected, the service controller 1a disconnects the service filament 5 on the condition that the second recovery contact FDR2 of the output relay FDR of the disconnection detector 10 is conductive. Is required, control cables 13a and 13b for inputting signals from the second restoration contact FDR2 and an input circuit are required, and the configuration of the entire apparatus is complicated and construction is not easy. .

この発明は、このような短所を改善し、信号灯から常用フィラメントが断芯したことを示す信号を信号機制御装置に送る制御ケーブルや入力回路を必要としないで簡単な構成で常用フィラメントの断芯を検出して経済性を高めた信号機制御システムを提供することを目的とするものである。   The present invention improves such disadvantages and eliminates the breakage of the regular filament with a simple configuration without the need for a control cable or an input circuit that sends a signal indicating that the filament is broken from the signal lamp to the traffic signal controller. It is an object of the present invention to provide a traffic light control system that is detected and improved in economic efficiency.

この発明の信号機制御システムは、断芯検出器と直列接続した常用フィラメントと、前記断芯検出器の出力リレーの復旧接点と直列接続した予備フィラメントとを並列接続し、常時は常用フィラメントを使用し、常用フィラメント断芯時は前記断芯検出器の出力リレーの復旧接点で予備フィラメントに切換える信号灯を有する信号機と、該信号機を制御する信号機制御装置とからなる信号機制御システムにおいて、前記信号灯は、前記断芯検出器の出力リレーの復旧接点を復旧させる復旧動作に所定の復帰時間を要する緩放特性を持たせ、前記信号機制御装置の信号灯制御部は、前記信号灯を点灯する交流電源の電源周期信号と、前記信号灯に流れる電流を検出する電流センサ信号と、前記信号灯の点灯／滅灯制御指令を入力し、電源周期信号が正常であることを検出しているときに、前記信号灯の点灯／滅灯制御指令が点灯指令になっている状態で電流センサ信号がオフになると、このオフ時間を計数し、電流センサ信号のオフ状態の継続時間が、前記信号灯の断芯検出器の出力リレーの復旧時間と一致したときに前記常用フィラメントが断芯したと判断することを特徴とする。前記断芯検出器の出力リレーの復旧接点を復旧させる復帰時間を前記交流電源の系統切換時の電源切換時間より長くなるように緩放特性を持たせると良い。   The traffic light control system according to the present invention connects a normal filament connected in series with a disconnection detector and a spare filament connected in series with a recovery contact of the output relay of the disconnection detector, and normally uses a normal filament. In a traffic light control system comprising a traffic light having a signal lamp that switches to a spare filament at the recovery contact of the output relay of the breakage detector at the time of normal filament breakage, and a traffic light controller that controls the traffic light, the signal light is A restoration operation that restores the restoration contact of the output relay of the disconnection detector has a slow release characteristic that requires a predetermined restoration time, and the signal lamp control unit of the traffic light control device is a power cycle signal of an AC power source that lights the signal lamp And a current sensor signal for detecting the current flowing through the signal lamp and a lighting / extinguishing control command for the signal lamp. When the current sensor signal is turned off while the signal lamp lighting / extinction control command is set to the lighting command, the off time is counted and the current sensor signal When the duration time of the OFF state coincides with the recovery time of the output relay of the signal lamp disconnection detector, it is determined that the regular filament is disconnected. It is preferable to provide a slow release characteristic so that the recovery time for restoring the recovery contact of the output relay of the disconnection detector is longer than the power switching time at the time of switching the AC power supply system.

この発明は、常用フィラメントと予備フィラメントを有する信号灯の断芯検出器の出力リレーの復旧接点を復旧させる復旧動作に電源切換時間より長い所定の復帰時間を要する緩放特性を持たせ、信号機制御装置の信号灯制御部は、信号灯を点灯する交流電源の電源周期信号と、信号灯に流れる電流を検出する電流センサ信号と、信号灯の点灯／滅灯制御指令を入力し、電源周期信号が正常であることを検出しているときに、信号灯の点灯／滅灯制御指令が点灯指令になっている状態で電流センサ信号がオフになると、このオフ時間を計数し、電流センサ信号のオフ状態の継続時間が、電源切換時間を越えて信号灯の断芯検出器の出力リレーの復旧時間と一致したときに前記常用フィラメントが断芯したと判断することにより、信号機制御装置の信号灯制御部と信号灯の間を１対の電源ケーブルで接続するだけですみ、信号灯から信号灯制御部との間に、信号灯の断芯検出器の出力リレーの復旧接点条件を入力するための制御ケーブルを設ける必要がないとともに、信号灯制御部に信号灯からの断芯検出信号を入力する入力回路を設ける必要はなく、経済性の高い信号機制御装置を得ることができる。   The present invention has a slow release characteristic that requires a predetermined return time longer than a power supply switching time in a recovery operation for recovering a recovery contact of an output relay of a signal lamp disconnection detector having a regular filament and a spare filament. The signal lamp control unit inputs the power cycle signal of the AC power source that lights the signal lamp, the current sensor signal that detects the current flowing through the signal lamp, and the signal lamp lighting / extinction control command, and the power cycle signal is normal When the current sensor signal is turned off while the signal lamp lighting / extinction control command is turned on, the off time is counted and the duration time of the current sensor signal off state is detected. By determining that the regular filament is disconnected when the power relay switching time exceeds the recovery time of the output relay of the signal lamp disconnection detector, It is only necessary to connect the signal lamp controller and the signal lamp with a pair of power cables, and control for inputting the recovery contact condition of the output relay of the signal lamp disconnection detector between the signal lamp and the signal lamp controller. It is not necessary to provide a cable, and it is not necessary to provide an input circuit for inputting the disconnection detection signal from the signal lamp in the signal lamp control unit, and a highly economical signal control device can be obtained.

図１は、この発明の信号機制御システムの構成を示すブロック図である。図に示すように、信号機制御装置１は、信号灯制御部２と電源周期検出部３及び灯電流検出部４を有し、常用フィラメント５と予備フィラメント６が設けられた信号電球７を有する信号灯８を制御する。信号灯制御部２は、信号灯８を点灯／滅灯させる指令を灯制御入力とし、信号灯交流電源９から出力される電圧を制御して信号灯８に供給して信号灯８の点灯／滅灯を制御する。電源周期検出部３は、例えばフォトカプラからなり、常時、信号灯交流電源９の電源周期を検出して電源周期信号を信号灯制御部２に送る。灯電流検出部４は、常時、信号灯制御部２から信号灯８に供給する灯電流を検出して灯電流検出信号を信号灯制御部２に送る。   FIG. 1 is a block diagram showing the configuration of the traffic light control system of the present invention. As shown in the figure, the traffic light control device 1 has a signal lamp control unit 2, a power cycle detection unit 3, and a lamp current detection unit 4, and a signal lamp 8 having a signal bulb 7 provided with a regular filament 5 and a spare filament 6. To control. The signal lamp control unit 2 uses a command for lighting / extinguishing the signal lamp 8 as a lamp control input, controls the voltage output from the signal lamp AC power supply 9 and supplies it to the signal lamp 8 to control the lighting / extinction of the signal lamp 8. . The power cycle detection unit 3 is made of, for example, a photocoupler, and constantly detects the power cycle of the signal lamp AC power source 9 and sends a power cycle signal to the signal lamp control unit 2. The lamp current detection unit 4 always detects the lamp current supplied from the signal lamp control unit 2 to the signal lamp 8 and sends a lamp current detection signal to the signal lamp control unit 2.

信号灯８は、信号電球７の常用フィラメント５の断芯を検出する断芯検出器１０と断芯検出器１０の出力リレーＦＤＲとコンデンサＣを有し、１対の電源ケーブル１１ａ，１１ｂを介して信号灯制御部２に接続されている。信号電球７の常用フィラメント５は、一方の電源ケーブル１１ａが接続された入力端子１２ａと他方の電源ケーブル１１ｂが接続された入力端子１２ｂに接続されている。断芯検出器１０は入力端子１２ａと常用フィラメント５との間に設けられ、常用フィラメント５の断芯を検出する。断芯検出器１０の出力リレーＦＤＲのコイルとコンデンサＣは、断芯検出器１０の出力端子に並列に接続されている。この出力リレーＦＤＲのコイルとコンデンサＣを並列に接続することにより、出力リレーＦＤＲの復旧動作に復旧時間Ｔｄを要するように緩放特性を持たせている。予備フィラメント６は出力リレーＦＤＲの第１復旧接点ＦＤＲ１を介して入力端子１２ａと入力端子１２ｂに接続されている。   The signal lamp 8 includes a breakage detector 10 for detecting breakage of the regular filament 5 of the signal light bulb 7, an output relay FDR of the breakage detector 10, and a capacitor C, via a pair of power cables 11a and 11b. It is connected to the signal light control unit 2. The service filament 5 of the signal bulb 7 is connected to an input terminal 12a to which one power cable 11a is connected and an input terminal 12b to which the other power cable 11b is connected. The disconnection detector 10 is provided between the input terminal 12a and the regular filament 5, and detects the disconnection of the regular filament 5. The coil of the output relay FDR of the disconnection detector 10 and the capacitor C are connected in parallel to the output terminal of the disconnection detector 10. By connecting the coil of the output relay FDR and the capacitor C in parallel, a slow release characteristic is provided so that the recovery operation of the output relay FDR requires a recovery time Td. The spare filament 6 is connected to the input terminal 12a and the input terminal 12b via the first recovery contact FDR1 of the output relay FDR.

前記のように構成した信号機制御装置１で信号灯８を制御するときの動作を説明する。   An operation when the signal lamp 8 is controlled by the traffic signal control apparatus 1 configured as described above will be described.

まず、信号電球７の常用フィラメント５の断芯がなく、全てが正常な通常時の動作を図２のタイムチャートを参照して説明する。   First, a normal operation in which the normal filament 5 of the signal bulb 7 is not broken and is all normal will be described with reference to the time chart of FIG.

信号灯交流電源９から信号灯制御部２に供給される交流周波数が50Ｈｚの場合、電源周期検出部３で検出している電源周期Ｔｐは20ｍｓである。電源周期検出部３は信号灯交流電源９から信号灯制御部２に供給している交流電圧に応じて電源周期Ｔｐの矩形波の電源周期信号を信号灯制御部２に送る。信号灯制御部２は送られた電源周期信号の立ち上り又は立下りを検出してあらかじめ設定されている電源周期Ｔｐと照合して信号灯交流電源９から供給する交流電圧が正常であること、すなわち信号灯交流電源９から交流電圧が正常に供給されていることを確認する。そして信号灯制御部２は、電源周期検出部３から送られる電源周期信号が正常で、図示しない連動論理装置から出力される灯制御入力に応じて信号灯８に供給する灯制御出力をオン／オフ制御する。この灯制御出力をオフにしているとき、信号灯制御部２は灯電流検出部４から送られる灯電流検出信号がオフであると、常用フィラメント７の断芯検出なしと判定する。また、電源周期信号が正常で、灯制御入力がオンで信号灯８に供給する灯制御出力をオンにしたとき、灯電流検出部４から送られる灯電流検出信号がオンの場合、常用フィラメント７の断芯検出なしと判定する。   When the AC frequency supplied from the signal lamp AC power source 9 to the signal lamp control unit 2 is 50 Hz, the power cycle Tp detected by the power cycle detection unit 3 is 20 ms. The power cycle detection unit 3 sends a rectangular wave power cycle signal having a power cycle Tp to the signal lamp control unit 2 according to the AC voltage supplied from the signal lamp AC power source 9 to the signal lamp control unit 2. The signal lamp control unit 2 detects the rising or falling of the transmitted power cycle signal and compares it with a preset power cycle Tp, that is, the AC voltage supplied from the signal lamp AC power source 9 is normal. Confirm that the AC voltage is normally supplied from the power source 9. Then, the signal lamp control unit 2 performs on / off control of the lamp control output supplied to the signal lamp 8 according to the lamp control input output from the interlocking logic device (not shown) when the power cycle signal sent from the power cycle detecting unit 3 is normal. To do. When the lamp control output is turned off, if the lamp current detection signal sent from the lamp current detection unit 4 is off, the signal lamp control unit 2 determines that there is no detection of breakage of the regular filament 7. Further, when the power cycle signal is normal, the lamp control input is on and the lamp control output supplied to the signal lamp 8 is turned on, the lamp current detection signal sent from the lamp current detection unit 4 is on. It is determined that no disconnection is detected.

次に、信号灯交流電源９の受電系統を何らかの理由で切り替える信号灯交流電源９の系統切換時の動作を図３のタイムチャートを参照して説明する。   Next, the operation at the time of system switching of the signal lamp AC power source 9 that switches the power receiving system of the signal lamp AC power source 9 for some reason will be described with reference to the time chart of FIG.

一般に信号灯交流電源９は２系統から給電されるように冗長化されており、切換部を介して選択された系統から信号機制御装置１に給電される。この系統を切換える時に、電源切換時間Ｔｓの電源瞬断が発生する。この電源切換時間Ｔｓは通常150ｍｓ程度である。この信号灯交流電源９の系統切換時の電源瞬断時には、図３に示すように、信号灯制御部２に送られる電源周期信号はオフになり、灯電流検出信号もオフになる。信号灯制御部２は、電源周期検出部３から送られる電源周期信号が正常で、灯制御入力として点灯を示す信号が送られて信号灯８に灯制御出力を送っている状態で、電源周期検出部３から送られる電源周期信号がオフになって灯電流検出信号がオフになると、オフ状態の継続時間を計数し、あらかじめ設定されている電源切換時間Ｔｓと照合し、灯電流検出信号のオフ状態の継続時間が電源切換時間Ｔｓ程度であるときは信号灯交流電源９の系統切換と判定する。そして信号制御部２は信号灯８に送る灯制御出力がオンの状態で電源周期信号と灯電流検出信号がオフになって信号灯交流電源９の系統切換と判定したときは常用フィラメント７の断芯検出なしと判定する。なお、電源周期信号と灯電流検出信号のオフ状態の継続時間が電源切換時間Ｔｓより所定時間をオーバしたときは信号灯交流電源９に異常が発生したと判断し、その旨を表示出力する。   In general, the signal light AC power supply 9 is redundantly supplied with power from two systems, and is supplied with power to the traffic signal control device 1 from the system selected via the switching unit. When this system is switched, an instantaneous power interruption of the power switching time Ts occurs. This power supply switching time Ts is usually about 150 ms. At the time of instantaneous power interruption at the time of switching the system of the signal lamp AC power source 9, as shown in FIG. 3, the power cycle signal sent to the signal lamp control unit 2 is turned off, and the lamp current detection signal is also turned off. The signal lamp control unit 2 is a power cycle detection unit in a state in which the power cycle signal sent from the power cycle detection unit 3 is normal and a signal indicating lighting is sent as a lamp control input and a lamp control output is sent to the signal lamp 8. When the power cycle signal sent from 3 is turned off and the lamp current detection signal is turned off, the duration of the off state is counted and compared with the preset power switching time Ts, and the lamp current detection signal is turned off. Is determined to be the system switching of the signal lamp AC power source 9 when the duration of the current is about the power source switching time Ts. When the signal control unit 2 determines that the system switching of the signal lamp AC power source 9 is turned off when the lamp control output to the signal lamp 8 is on and the power cycle signal and the lamp current detection signal are off, the breakage of the service filament 7 is detected. Judged as none. When the duration of the OFF state of the power cycle signal and the lamp current detection signal exceeds a predetermined time from the power switching time Ts, it is determined that an abnormality has occurred in the signal lamp AC power source 9, and a message to that effect is output.

次に、信号灯交流電源９から信号機制御装置１に供給する交流電圧が正常で、信号灯制御部２に送られている灯制御入力が点灯を示す信号であって、信号灯制御部２から信号灯８に送っている灯制御出力がオンのときに常用フィラメント５が断芯した場合の動作を図４のタイムチャートを参照して説明する。   Next, the AC voltage supplied from the signal lamp AC power source 9 to the traffic signal controller 1 is normal, and the lamp control input sent to the signal lamp control unit 2 is a signal indicating lighting. The operation in the case where the service filament 5 is broken when the lamp control output being sent is on will be described with reference to the time chart of FIG.

信号灯制御部２で灯制御出力をオンにして常用フィラメント７に電流を供給しているとき、常用フィラメント７が断芯して、断芯検出器１０で常用フィラメント断芯を検出すると、断芯検出器１０の出力リレーＦＤＲのコイルに並列に接続されたコンデンサＣによる復帰時間Ｔｄを経過後に出力リレーＦＤＲは復旧する。この出力リレーＦＤＲの復帰時間Ｔｄは電源切換時間Ｔｓより長くなるようにコンデンサＣの容量があらかじめ選択されている。   When the signal control unit 2 turns on the lamp control output and supplies current to the service filament 7, if the service filament 7 breaks and the service break detector 10 detects the service filament break, the break detection is detected. The output relay FDR is restored after the return time Td by the capacitor C connected in parallel to the coil of the output relay FDR of the device 10 has elapsed. The capacity of the capacitor C is selected in advance so that the return time Td of the output relay FDR is longer than the power supply switching time Ts.

したがって信号灯制御部２は電源周期検出部３から送られる電源周期信号が正常で、連動論理装置から出力される灯制御入力がオンで信号灯８に供給する灯制御出力をオンにしている状態で灯電流検出器４から入力する灯電流検出信号がオンからオフになると、灯電流検出信号がオフになっている状態の継続時間を計数し、計数している灯電流検出信号のオフ状態の継続時間とあらかじめ設定された電源切換時間Ｔｓと出力リレーＦＤＲの復帰時間Ｔｄを照合し、灯電流検出信号がオンになったときの灯電流検出信号のオフ状態の継続時間が電源切換時間Ｔｓを越えて出力リレーＦＤＲの復帰時間Ｔｄに達した直後に電源周期信号が正常で灯制御出力がオンになっていることを確認すると信号灯８の信号電球７は常用フィラメント５から予備フィラメント６に切り換わったと判断する。そして常用フィラメント５の断芯検出有りと判定して、その旨を示す表示信号を連動論理装置に出力し、断芯回復指令などでリセットされるまで記憶する。   Therefore, the signal lamp control unit 2 is in a state where the power cycle signal sent from the power cycle detection unit 3 is normal, the lamp control input output from the interlocking logic device is on, and the lamp control output supplied to the signal lamp 8 is on. When the lamp current detection signal input from the current detector 4 is turned off from on, the duration of the lamp current detection signal being off is counted, and the duration of the off-state of the lamp current detection signal being counted is counted. And the preset power supply switching time Ts and the return time Td of the output relay FDR are collated, and the duration time of the lamp current detection signal OFF state when the lamp current detection signal is turned on exceeds the power supply switching time Ts. Immediately after reaching the return time Td of the output relay FDR, when it is confirmed that the power cycle signal is normal and the lamp control output is turned on, the signal bulb 7 of the signal lamp 8 is reserved from the regular filament 5. It is determined that switched to Iramento 6. Then, it is determined that the breakage of the regular filament 5 has been detected, and a display signal indicating that fact is output to the interlocking logic device and stored until reset by a breakage recovery command or the like.

このように断芯検出器１０の出力リレーＦＤＲに復旧時間Ｔｄの緩放特性を持たせ、信号灯制御部２は、電源周期信号が正常であることを検出しているときに、灯制御出力がオンになっている状態で灯電流検出器４から入力する灯電流検出信号がオフになると、このオフ時間を計数し、灯電流検出信号のオフ状態の継続時間が電源切換時間Ｔｓを越えて断芯検出器１０の出力リレーＦＤＲに復旧時間Ｔｄと一致したときに常用フィラメント５が断芯したことを検出するから、信号機制御装置１の信号灯制御部２と信号灯８の間を１対の電源ケーブル１１ａ，１１ｂで接続するだけですみ、信号灯８から信号灯制御部２との間に、信号灯８の断芯検出器１０の出力リレーの復旧接点条件を入力するための制御ケーブルを設ける必要がないとともに、信号灯制御部２に信号灯８からの断芯検出信号を入力する入力回路を設ける必要はなく、経済性の高い信号機制御装置を得ることができる。   As described above, the output relay FDR of the disconnection detector 10 has the slow release characteristic of the recovery time Td, and the signal control unit 2 detects that the power control signal is normal when the power cycle signal is normal. When the lamp current detection signal input from the lamp current detector 4 is turned off in the on state, this off time is counted, and the duration of the lamp current detection signal in the off state exceeds the power supply switching time Ts. Since the output filament FDR of the core detector 10 detects that the service filament 5 is disconnected when it coincides with the recovery time Td, a pair of power cables between the signal lamp control unit 2 and the signal lamp 8 of the traffic signal controller 1 No need to provide a control cable for inputting the recovery contact condition of the output relay of the disconnection detector 10 of the signal lamp 8 between the signal lamp 8 and the signal lamp control unit 2 only by connecting at 11a and 11b. Both , It is not necessary to provide an input circuit for inputting the cross-sectional core detection signal from the signal light control unit 2 to the signal lamp 8, it is possible to obtain a high traffic signal controller economical.

この発明の信号機制御システムの構成を示すブロック図である。It is a block diagram which shows the structure of the traffic signal control system of this invention. 全てが正常な通常時の動作を示すタイムチャートである。It is a time chart which shows the operation | movement at the time of all normal. 信号灯交流電源の系統切換時の動作を示すタイムチャートである。It is a time chart which shows the operation | movement at the time of the system | strain switching of a signal light alternating current power supply. 常用フィラメントが断芯した場合の動作を示すタイムチャートである。It is a time chart which shows operation | movement when a regular filament breaks. 従来の信号機制御システムの構成を示すブロック図である。It is a block diagram which shows the structure of the conventional signal control system.

符号の説明Explanation of symbols

１；信号機制御装置、２；信号灯制御部、３；電源周期検出部、４；灯電流検出部、
５；常用フィラメント、６；予備フィラメント、７；信号電球、８；信号灯、
９；信号灯交流電源、１０；断芯検出器、１１；電源ケーブル、
ＦＤＲ；断芯検出器の出力リレー，Ｃ；コンデンサ、
ＦＤＲ１；出力リレーの第１復旧接点。 DESCRIPTION OF SYMBOLS 1; Traffic light control apparatus, 2; Signal lamp control part, 3; Power supply period detection part, 4; Lamp current detection part,
5; regular filament, 6; spare filament, 7; signal bulb, 8; signal lamp,
9: Signal lamp AC power supply, 10: Disconnection detector, 11: Power cable,
FDR: disconnection detector output relay, C: capacitor,
FDR1; a first recovery contact of the output relay.

Claims (2)

断芯検出器と直列接続した常用フィラメントと、前記断芯検出器の出力リレーの復旧接点と直列接続した予備フィラメントとを並列接続し、常時は常用フィラメントを使用し、常用フィラメント断芯時は前記断芯検出器の出力リレーの復旧接点で予備フィラメントに切換える信号灯を有する信号機と、該信号機を制御する信号機制御装置とからなる信号機制御システムにおいて、
前記信号灯は、前記断芯検出器の出力リレーの復旧接点を復旧させる復旧動作に所定の復帰時間を要する緩放特性を持たせ、
前記信号機制御装置の信号灯制御部は、前記信号灯を点灯する交流電源の電源周期信号と、前記信号灯に流れる電流を検出する電流センサ信号と、前記信号灯の点灯／滅灯制御指令を入力し、電源周期信号が正常であることを検出しているときに、前記信号灯の点灯／滅灯制御指令が点灯指令になっている状態で電流センサ信号がオフになると、このオフ時間を計数し、電流センサ信号のオフ状態の継続時間が、前記信号灯の断芯検出器の出力リレーの復旧時間と一致したときに前記常用フィラメントが断芯したと判断することを特徴とする信号機制御システム。 The normal filament connected in series with the disconnection detector and the spare filament connected in series with the recovery contact of the output relay of the disconnection detector are connected in parallel, and the normal filament is used at all times. In a traffic light control system comprising a traffic light having a signal light that switches to a spare filament at the recovery contact of the output relay of the disconnection detector, and a traffic light control device that controls the traffic light,
The signal lamp has a slow release characteristic that requires a predetermined recovery time for a recovery operation to recover the recovery contact of the output relay of the disconnection detector,
The signal light control unit of the traffic light control device inputs a power cycle signal of an AC power source for lighting the signal light, a current sensor signal for detecting a current flowing through the signal light, and a lighting / extinction control command for the signal light, When it is detected that the periodic signal is normal, if the current sensor signal is turned off while the signal lamp lighting / extinction control command is turned on, this off time is counted and the current sensor is counted. A traffic light control system, characterized in that it is determined that the service filament has been disconnected when the duration time of the signal OFF state coincides with the recovery time of the output relay of the signal lamp disconnection detector. 前記断芯検出器の出力リレーの復旧接点を復旧させる復帰時間を前記交流電源の系統切換時の電源切換時間より長くなるように緩放特性を持たせた請求項１記載の信号機制御システム。   2. The traffic light control system according to claim 1, wherein a slow release characteristic is provided so that a recovery time for recovering the recovery contact of the output relay of the disconnection detector is longer than a power switching time at the time of system switching of the AC power supply.
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