MEMS-based inertial system for railway track diagnostics

Boronakhin, A. M.; Podgornaya, L. N.; Bokhman, E. D.; Filipenya, N. S.; Filatov, Yu. V.; Shalymov, R. B.; Larionov, Daniil Yu.

doi:10.1134/s2075108711040055

Cited by 17 publications

(11 citation statements)

References 1 publication

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“…For example, the track super-elevation and the corresponding irregularity can be determined by the roll angle as illustrated in Figure 11 if the nominal track geometry data is available. Table 3 shows the measurement error of roll angle amounts to about 0.01 degree (1 σ), which means the track super-elevation can be determined with accuracy of 0.26 mm as shown in equation (10). The tolerance on super-elevation for the high-speed line in China defined by the awarding authority is 2 mm, which means the proposed method can meet the accuracy requirement for the super-elevation determination.…”

Section: Repeatability Analysismentioning

confidence: 98%

“…Inertial sensors, e.g., accelerometers and gyroscopes, are usually equipped in the railway track surveying equipment to detect the track irregularity and assess the track condition by sensing the acceleration and angular rate change of the corresponding platform. Typically, the inertial sensors are mounted on the rigid structures of the train, such as the axle-box, bogie, and car-body to detect the vertical and lateral track irregularities [4][5][6][7][8][9][10][11]. The accelerations are first converted to displacement by double integration; then the track irregularities are detected with the displacement.…”

Section: Introductionmentioning

confidence: 99%

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Railway Track Irregularity Measuring by GNSS/INS Integration

Chen,

Niu,

Zhang

et al. 2015

J Inst Navig

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Railway track irregularity measuring is a task of fundamental importance to guarantee operating safety and arrange proper maintenance, particularly for the high-speed lines. Conventional measuring methods cannot satisfy the requirements of accuracy and time-efficiency simultaneously. A GNSS/INS integrated technique is proposed based on the fact that railway track irregularity detection is essentially an issue of relative surveying. Key technologies of the integration algorithm aiming at track irregularity measuring are proposed to improve the performance of the GNSS/INS system. Results show that the proposed method can fulfill 1 mm relative accuracy in identifying track irregularities in the kinematic surveying mode, which means this method can satisfy the accuracy requirement for a high-speed line and is ten times faster than the conventional method based on total station.

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Section: Repeatability Analysismentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Railway Track Irregularity Measuring by GNSS/INS Integration

Chen,

Niu,

Zhang

et al. 2015

J Inst Navig

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“…The work by Boronakhin et al [1] describes the use of axlebox mounted MEMS accelerometers for the detection of rail defects. The authors describe a method for measuring vertical profile which is based on an inertial chord offset method, applying a cross-correlation function to the vertical velocities of successive bogie wheels.…”

Section: Literature Reviewmentioning

confidence: 99%

Investigating inertial measurements using MEMS devices in trainborne automatic track condition monitoring applications

Bagshawe

2013

IET Conference on Control and Automation 2013: Uniting Problems and Solutions

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The majority of train-borne automatic track condition monitoring systems in operation throughout the UK rail infrastructure incorporate some form of inertial measurement unit. The rate gyroscopes and accelerometers which make up these units tend to be high value, relatively large and sometimes difficult to acquire. This paper explores the possibility of substituting readily available MEMS sensors into existing systems, initially in order to reduce support costs and improve spares availability. It is imagined that a miniature MEMS based IMU with multiple redundant sensors can be created in the long-term.Inertial measurements in the vertical profile are selected as the basis for a trial between a candidate MEMS device and the standard fitment accelerometer. The specifications of the measurement system are used to determine the minimum performance requirements of the replacement accelerometer. A suitable device is sourced and interfaced with the measurement system by means of a low noise two-stage noninverting operational amplifier circuit. Trial data is collected from the same four mile section of track, recorded repeatedly at constant speeds between 20mph and 90mph in 10mph intervals, and the data is then analysed graphically and statistically in order to determine the level of agreement between the two sensor types. The trial MEMS accelerometer is proven theoretically to be suitable for use with the current measurement system down to speeds of 25mph. The practical trial suffered from a compromised installation position but still proved that the MEMS accelerometer shows good agreement with the force-balance servo accelerometer, particularly at speeds above 50mph. The data suggests that a further trial with improved installation position would be worth pursuing.

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“…Depending upon the required accuracy, the three-axis systems, based on laser gyros, fiber optical gyros or the specialized analytical gyro verticals with the reduced number of sensitive elements [18] can be used as SINS. The algorithms of measuring the basic geometry parameters of railway track, such as longitudinal level, cross level, curvature, inclination etc., were discussed in [19,20]; they can be realized in automatic apparatus [15,16]. The latter is not valid for procedures, providing identification of the rail rolling surface flaws.…”

Section: Isrgd Architecture Conceptmentioning

confidence: 99%

Fusion of heterogeneous sensor information for railway track diagnostics

Boronahin

Filatov

Larionov

et al. 2014

2014 Sensor Data Fusion: Trends, Solutions, Applications (SDF)

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1 boronakhin@mail.ru 2 yvfilatov@mail.eltech.ru 3 lariondan@yandex.ru 4 lpodgornaya@list.ru 5 RomanShalom@yandex.ru Abstract -The paper presents results of development of a system for railway track diagnostics. The system is developed on a base of integration of heterogeneous sensors (inertial sensors, receiver of the satellite navigation system, odometer and sensors of linear displacement). The key element of this system is the set of inertial measurement modules, based on micromechanical gyros and accelerometers, which are mounted directly onto an axle boxes (a cover of bearings) of the wheel pairs. Such a system architecture made it possible to carry out a scientific investigations of an action, provided by dynamic interaction between train and track onto the results of geometry deformations measurement, as well as to provide measurement of parameters like defects of the rail rolling surface.

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MEMS-based inertial system for railway track diagnostics

Cited by 17 publications

References 1 publication

Railway Track Irregularity Measuring by GNSS/INS Integration

Railway Track Irregularity Measuring by GNSS/INS Integration

Investigating inertial measurements using MEMS devices in trainborne automatic track condition monitoring applications

Fusion of heterogeneous sensor information for railway track diagnostics

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