To keep a state where operation history information of a central control device has no defect regardless of disconnection of communication.SOLUTION: A terminal control device controls a signal light unit by a signal control command from a central control device, and transmits a message of an operation history notification including operation history information to express an operation state of the control to the central control device via a wireless conversion device. The wireless conversion device stores operation history information within a reception message. The central control device stores operation history information within a reception message. The central control device transmits a message of an operation history re-transmission request including information of a defect period to the wireless conversion device when operation history information of the own device has a defect. The wireless conversion device searches operation history information corresponding to a defect period within a reception message, and transmits a message of an operation history re-transmission response including the operation history information to the central control device. The central control device repairs a defect of the operation history information of the own device with the use of operation history information within a reception message.SELECTED DRAWING: Figure 2
【課題】通信の切断に関係なく中央制御装置の動作履歴情報を欠損がない状態に保持する。【解決手段】端末制御装置は、中央制御装置からの信号制御指令で信号灯器を制御し、その際の動作状況を表す動作履歴情報を含む動作履歴通知のメッセージを、無線変換装置を介して中央制御装置に送信する。無線変換装置は、受信メッセージ内の動作履歴情報を蓄積する。中央制御装置は、受信メッセージ内の動作履歴情報を蓄積する。中央制御装置は、自装置の動作履歴情報に欠損がある場合に、欠損期間の情報を含む動作履歴再送要求のメッセージを無線変換装置に送信する。無線変換装置は、受信メッセージ内の欠損期間に該当する動作履歴情報を検索し、その動作履歴情報を含む動作履歴再送応答のメッセージを中央制御装置に送信する。中央制御装置は、受信メッセージ内の動作履歴情報を用いて自装置の動作履歴情報の欠損を修復する。【選択図】図2
TRAFFIC SIGNAL CONTROL SYSTEM, TRAFFIC SIGNAL CONTROL DEVICE, TRAFFIC SIGNAL CONTROL METHOD, TRAFFIC SIGNAL CONTROL PROGRAM, AND TERMINAL CONTROL DEVICE
交通信号制御システム、交通信号制御装置、交通信号制御方法、交通信号制御プログラム、および端末制御装置
2020-12-24
Patent
Electronic Resource
Japanese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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