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1. 发明专利

JPS5821504A DEVICE FOR MEASURING MISALIGNMENT OF RAIL 失效
公开(公告)号：JPS5821504A
公开(公告)日：1983-02-08
申请号：JP11923481
申请日：1981-07-31
申请人： JAPAN NATIONAL RAILWAY , HITACHI LTD , HITACHI ELECTR ENG
发明人： KAMIYA MAKIO , TAKINO YUKIO , SAEGUSA OSAO , KISHIMOTO SATORU , TAKESHITA KUNIO , IWATANI FUKUO , ITOU MAKOTO , ITOU MASAYUKI
IPC分类号： G01B7/00 , E01B35/00 , G01B7/02 , G01B7/31 , G01B7/34 , G01B21/00 , G01B21/20
摘要： PURPOSE:To perform stable, sensitive, highly accurate detection of the displacement of the rail regardless of weather, by regarding the rail as an iron core and providing an exciting coil and detecting coils so as to form a differential transformer. CONSTITUTION:At the locations which have a specified height (h) over the top part of the rail 1, a primary coil 11 and secondary coils 12a and 12b are arranged on a truck of a measuring car. Both coils are air core coils. Their axial direction is horizontal and perpendicular to the rail 1. The rail 1 functions as if it were the core in the differential transformer. When the primary coil 11 is excited by an AC, the secondary coil are magnetically coupled by magnetic lines of force H. Since both secondary coils are differentially connected, the output becomes zero when the rail is located at the central position between both coils. When the rail is displaced in the horizontal direction, the detected signal corresponding to the amount of the displacement is outputted.

2. 发明专利

JPS5882103A DEVICE FOR MEASURING MISALIGNED RAIL 失效
公开(公告)号：JPS5882103A
公开(公告)日：1983-05-17
申请号：JP14101281
申请日：1981-09-09
申请人： JAPAN NATIONAL RAILWAY , HITACHI LTD , HITACHI ELECTR ENG
发明人： KAMIYA MAKIO , TAKINO YUKIO , SAEGUSA OSAO , KISHIMOTO SATORU , TAKESHITA KUNIO , IWATANI FUKUO , ITOU MAKOTO , ITOU MASAYUKI
IPC分类号： B61K9/08 , E01B35/00 , G01B7/00 , G01B7/28 , G01B7/305 , G01B7/34
摘要： PURPOSE:To improve accuracy, of the titled measuring, by detecting and measuring the displacement in right and left directions and change in height based on an eddy current effect, correcting the measured value of the right and left displacements by the height data, thereafter performing the second stage correction by said corrected value and the height data. CONSTITUTION:A signal voltage (v) with regard to a displacement (x) at a height (y) is obtained as an output of a differential amplifier 23 based on the eddy current effects of (x) displacement coils 4a and 4b. Meanwhile, a signal voltage based on the eddy current effect of a (y) displacement coil 8 passes a height operating circuit 24 and a correcting coefficient circuit 25. The result is multiplied by the signal voltage (v) in an analog multilier 26. The corrected right and left displacement values and the height displacement value are converted into the digtal values by A/D converters 27a and 27b. Then, addresses in an ROM are specified. Then, the second stage correction is performed, and the correct displacement amount at the specified address is obtained. In this way, the measurement can be performed without the effect of snow-fall.

3. 发明专利

JPS57173701A EDDY CURRENT TYPE DEVICE AND METHOD FOR MEASURING RAIL DISPLACEMENT 失效
公开(公告)号：JPS57173701A
公开(公告)日：1982-10-26
申请号：JP5919181
申请日：1981-04-21
申请人： JAPAN NATIONAL RAILWAY , SHINKAWA DENKI KK
发明人： SHIROTA YASUSHI , ITOU HIROSHI , KAMIYA MAKIO , TAKINO YUKIO , MATSUHASHI KANJI , IMAIKE HIROSHI , NAKAMURA KIYOHISA
IPC分类号： G01B7/14 , E01B35/02 , G01B7/00 , G01B7/02
摘要： PURPOSE:To detect the central position of the rail accurately in the eddy current type rail displacement measurement, by using the average of the outputs of a pair of polygonally shaped detecting coils facing opposite to the rail, and compensating the variation in the distance from the wheel tread of the rail. CONSTITUTION:Triangular coils 6 and 7 are mounted on the lower part of a measuring car running on the rails so as to face the rail 3. Since the impedance of the coil is a function of the distance between the rail and the coil, the output, which corresponds to the displacement in the gap between the tread of the rail and the coil and in the span in the right and left directions of the rails, can be detected when a high frequency current is flowed in the detecting coils. When the rectangular coils are used, the detection can be performed in the broad range with excellent linearity. The average of the output of a pair of the coils indicates said gap. Therefore, when the coil output is compensated by the difference between said average and a reference value, the accurate measurement can be performed even though said gap is varied.

4. 发明专利

JPS58216924A Rail stress detecting system 失效
标题翻译：铁路应力检测系统
公开(公告)号：JPS58216924A
公开(公告)日：1983-12-16
申请号：JP9917082
申请日：1982-06-11
申请人： Hitachi Electronics Eng Co Ltd , Hitachi Ltd , Japanese National Railways
发明人： KAMIYA MAKIO , SAEGUSA OSAO , FUKAZAWA YOSHIROU , YAMAMOTO YOUICHI , IWATANI FUKUO , TAKAHASHI KENSAKU , UENO YOSHIKATSU
IPC分类号： G01L1/00 , G01L5/00
CPC分类号： G01L5/0047
摘要： PURPOSE:To measure the axial tension of a rail by a magnetic anisotropic detection sensor, by averaging four peak output values accompanied by magnetic anisotropy yielded by stress, based on the output of the magnetic anisotropic sensor, and performing correction based on the temperature. CONSTITUTION:A rail axial tension detecting sensor 17 is attached to a rail. When an anisotropic sensor 8 is rotated, signals are obtained for 0 deg.-360 deg.. Four peak values are detected by a peak value detecting circuit 26. Said peak value data are sequentially added, and an average value is computed by an average value circuit 30. The corresponding rail axial tension is read from said average value by a converter 31 and displayed on a display device 32. The value of the rail axial tension is corrected by the temperature data from a thermometer 18 in a temperature correcting circuit 33 so as to obtain the value of the standard temperature. The value is compared with upper and lower limit values in a comparator 34. When the value exceeds the limit value, a signal is outputted and displayed on the display circuit 32.
摘要翻译：目的：通过磁性各向异性检测传感器测量轨道的轴向张力，通过平均四个由应力产生的磁各向异性的峰值输出值，基于磁各向异性传感器的输出，并根据温度进行校正。构成：轨道轴向张力检测传感器17附接到轨道。当各向异性传感器8旋转时，获得0度-360度的信号。峰值检测电路26检测四个峰值。所述峰值数据被依次相加，平均值由平均值相应的导轨轴向张力由转换器31从所述平均值读取并显示在显示装置32上。轨道轴向张力的值由温度校正电路33中的温度计18的温度数据进行校正以获得标准温度的值。该值与比较器34中的上限值和下限值进行比较。当该值超过限制值时，输出信号并将其显示在显示电路32上。

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