介紹一種利用光電技術(shù)動態(tài)檢測軌道不平順的方法，裝置安裝在運營機車上，由線陣CCD傳感器、紅外線光源、軌道檢測單元板、數(shù)據(jù)轉(zhuǎn)儲器和地面微機處理系統(tǒng)等部分組成。闡述了直接測量法原理、硬件電路、浮動二值化以及雙CCD 的并行驅(qū)動采集，并給出了現(xiàn)場試驗結(jié)果、檢 測曲線和故障點照片。該裝置穩(wěn)定可靠、數(shù)據(jù)準(zhǔn)確率高，可對軌道狀態(tài)進(jìn)行定量分析和定性評價。
關(guān)鍵詞：CCD 傳感器；不平順測量；鐵路軌道
Abstract: A method for dynamically detecting irregularity state of railway track by means of a
photoelectric technique is introduced. The unit that consists of CCD sensor, IR light source, detecting unit board for track, data memory transfer unit and ground-based microcomputer processing system is installed on an operating locomotive. The principle for direct measurement, hardware circuit, floating binaryzation and parallel sampling with double CCDs are described. The tested results in field, detection curves and pictures of fault on the spots are given. The unit is stable and reliable. The data obtained with the unit are highly accurate. The quantitative analysis and qualitative evaluation for state of railway track can be carried out by means of the unit.
Key words: CCD sensor ; Irregularity detection; Railway track