Method and device to control railway track rails

FIELD: transport.

SUBSTANCE: invention relates to railway transport. Proposed device comprises transducer of distance covered and displacement transducer to measure distance between rails, controller, processor and storage unit mounted on truck. Said truck comprises measuring rule with support and measuring wheels articulated with platform by means of hinged tie rod. Measuring wheel is spring loaded in direction opposite the support wheel and fitted on axle that can axially displace to get in contact with displacement transducer. Hinged tie-rod comprises pins coupled with angular turn transducers electrically connected with processor.

EFFECT: higher accuracy of measurements.

4 cl, 9 dwg

 

The invention relates to railway transport.

A device for measuring the distance between the rails at the request of the Russian Federation for invention №2003131043. The device contains two laser sensor. The method consists in scanning the rails and comparing the results of measuring the distance between them with valid values.

A device for contactless measurement of the transverse profile and the distance between the rails way by RF patent for the invention №2255873, the prototype of the method and device.

This device for the contactless measurement of the transverse profile or distance between the rails way provides a measurement using the scanning beams of the two laser sensors located on the mobile platform above the rails, profile rail and distance, and entering these values into a computer database, depending on the distance travelled, and the determination of the deviation from the setpoint. The device contains two laser sensor, mounted on rails on the platform and the computer to which they are connected. The system contains a sensor momentum wheel platform, performing the measurement function of the traversed path.

The disadvantage of this system is its limited functionality when the diagnosis of railway tracks, as it does not define the longitudinal and transverse UKL the us section of the route.

The task of the invention is the extension improve the accuracy of the positioning platform and expand the functionality of the system.

These objectives are achieved in a device for controlling the rails of the railway track, containing mounted on the carriage sensor distance traveled and the displacement sensor to determine the distance between the rails, United electrical connections to the controller, which is connected to the processor, and a memory block, because, according to the invention, the cart contains connected with the platform by means of the swivel thrust measuring rail with a support and a measuring wheel, measuring wheel is spring-loaded in the direction opposite to the reference wheel, and installed on the axis, which is made with the possibility of axial movement and in contact with the displacement sensor, an articulated traction contain axis, with associated the sensors of angular rotation, United electrical connections with the processor. The device may comprise at least one accelerometer connected electrical connections to the controller. The device may contain a magnetometer connected electrical communication with the processor. The device may include a receiver system global remote positioning such as GLONASS, connected to the processor.

For p the last few years a lot of popularity in the world won global positioning system (determine the precise location) GPS. It really is a very promising market. The global services market global positioning in 2003 amounted to $500 million, and according to Ovum, in 2005, its volume will reach $9.75 billion (376 million subscribers). Some of the basic functioning of global positioning systems and their use in the world and is dedicated to this article. The first global positioning system GPS (Global Positioning System) was developed exclusively for military purposes. Global GPS navigation system designed to transmit navigation signals, which may be taken at the same time in all regions of the world. The initiator of the GPS system is the U.S. Department of Defense.

Used the abbreviation GPS appeared later, when the system began to be used not only for military but also for civilian purposes. The first regular orbital grouping system was deployed from June 1989 to March 1994 On the orbit were withdrawn 24 navigation satellites Block II. Finally the GPS system was put into operation in 1995 At the present time it is operated and maintained by the U.S. Department of Defense. Part of the GPS system consists of 3 main segments: space, ground and user. The space segment consists of 28 Autonomous satellites evenly distributed in orbits with altitude 20350 km (for full-power operation is istemi enough 24 satellites). Each satellite emits 2 frequencies special navigation signal which identifies 2 types of code. One of them only a few users, including, of course, the military and U.S. Federal agencies. In addition to these 2 signals the satellite emits and third, informing the user about additional parameters (the state of the satellite, its health, and others). The parameters of the orbits of the satellites periodically monitored by a network of ground tracking stations (5 stations located in tropical latitudes), with which (at least 1-2 times per day): calculated ballistic characteristics, register deviation between satellites and the calculated trajectory, determined by your own time, hours onboard satellites, monitors the health of navigation equipment, etc. for the detection of equipment failures satellites using ground stations usually takes several hours. The third segment of the GPS system is a GPS-receivers, manufactured and as independent devices (portable or stationary), and as payment for connection to a PC, the onboard computers and other devices. Key features of the GPS system (if the receiver of the GPS signal):

- determining the location of a mobile subscriber;

- determination of the shortest and most convenient route to your destination;

determining the return route;

- define speed (maximum, minimum, average);

- the definition of travel time (elapsed and how much you will need more) and other

Basis of the functioning of GPS systems, GLONASS

Theory ranging based on calculating the distance the signal propagation from the satellite to the receiver on the time delay. If you know the propagation time of the radio signal, then passed them the way easily computed simply by multiplying the propagation time of the signal at the speed of light.

Each satellite of the GPS system continuously generates radio waves 2 frequencies (L1=1575.42 MHz and L2=1227.60 MHz). The navigation signal is photomanipulating PRN pseudo-random-code (Pseudo Random Number code). PRN code is 2 types. The first C/a-code (Coarse Acquisition code is rough code) used in civil receivers. It provides only a rough estimate of location, and therefore is called "rough" code. C/a-code is transmitted on the L1 frequency by using a phase manipulation pseudo-random sequence of length 1023 characters. Error protection is provided by code of Gould. The repetition period of C/a code is 1 MS. Another code - R (precision code is the exact code) provides a more accurate calculation of coordinates, but the access is restricted. Basically, the P-code is available to the military and (sometimes) Federal services (for example the EP, to solve problems of geodesy and cartography). This code is transmitted on the L2 frequency with the use of extra-long pseudo-random sequence with a repetition period of 267 days. This code is available in principle and civilians. But the algorithm processing is much more complex, and therefore the equipment is more expensive. In turn, the frequency of the L1 signal is modulated as C/a and P-code. The GPS signal may be present and the so-called Y-code, which is the encrypted version of the P-code (military time system encryption may vary).

The basis of the GPS receiver is calculating the distance from it to several satellites, the location of which is known (these data are taken from the GPS satellite almanac"). In surveying the method of calculating the position of the object by measuring its distance from the points with the given coordinates is called "triangulation with measured lengths".

If you know the distance to one satellite, the coordinates of the receiver cannot be determined (it may be located at any point on the sphere radius, described around the satellite). Let the known distance of the receiver from the second satellite. In this case, the coordinate determination is also not possible - the object is on the circle that is the intersection of two spheres. The distance to a third satellite reduces the uncertainty in coordinating the Ah to two points. This is enough to uniquely determine the coordinates is the fact that of the two possible locations of the receiver, only one is on the Earth's surface (or close to it), and the second, false, turns out to be either deep inside the Earth, or very high above its surface. Thus, for three-dimensional navigation theoretically enough to know the distance from the receiver to 3 satellites.

The invention is illustrated in the drawings where:

- figure 1 shows the design of the device,

- figure 2 shows a diagram of the information retrieval from the memory block using an electric connector

- figure 3 shows a diagram of the information retrieval by means of receiving and transmitting device and the wireless communication channel,

- figure 4 is a diagram of the measuring angles measuring Reiki,

- figure 5 shows the electric diagram of the device with the receiver system of global remote positioning

- figure 6 shows the electric diagram of the device with a receiving and transmitting device,

- figure 7 shows the diagram of the measurement of the longitudinal inclination of the track,

on Fig is a diagram of the transverse inclination of the track (platform truck), section a-a 7,

- figure 9 shows a scheme of the measurement of the radius of rounding of rails.

The device (Fig.1-9) is on the I measure the distance between the rails 1. It contains placed on the measuring rod 2 support wheel 3, the measuring wheel 4 mounted on the axle 5 and the spring-tensioned by the spring 6 in the direction opposite the support wheel 3. The axis 5 of the measuring wheel 4 can be fixed with the possibility of axial movement and in contact with the displacement sensor 7. In addition, the device contains a single axle truck 8 with arm actuator 9 is attached by means of hinge 10 to the platform 11. Single axle truck 8 contains two wheels 12 mounted on the axis 13. On the platform 11 posted by electronic components of the device, including a controller 14, a CPU 15, is attached to the electrical connections 16, and the memory unit 17 is attached to the external electrical connector 18 (figure 2).

The measuring rail 2 and the platform 8 are connected by a thrust 19, the ends of which are fixed axis 20 and 21, with the possibility of rotation in the measuring rail 2 and the platform 8. With the axes 20 and 21 are connected to the angle sensors 22 and 23, United electrical connections 16 to the controller 14. On the platform 11 includes a probe traversed path 24 connected mechanically with one wheel 12. Controller 14 is connected to the sensor of the traversed path 24 and the displacement sensor 7.

On the platform 11 has a power supply 25 and the switch 24. Power supply electrical connections 16 connected to all the electronic components requiring electric power, including processor 15 (Fig 1). On the platform 1 can be equipped with two accelerometer 27 and 28 (figure 3), the United electrical connections 16 to the controller 14. The platform can also be installed magnetometer 29 (figure 4)connected to the electrical connection 16 to the controller 14. On the platform 11 includes a probe traversed path 29 (Fig 1)

On the platform 11 may be mounted receiver system global remote positioning 30, with the antenna 31 connected to its input. As a global positioning system can be applied GLONASS or GPS. For the same purpose can be applied to a device other positioning systems with similar features, such as Galileo or Compass. The system holabaloo remote positioning are connected by a channel 32 satellites 33 (figures 1 and 5). On the platform 11 can also be set receiving-transmitting device 34 is connected to the antenna 35 (6), and a remote control device 36, containing a stationary receiving and transmitting device 36 is connected to the antenna 38 and the stationary server 39.

When installing uniaxial platform 11 on the rails 1 includes a switch 26 and the electric power from the power supply 25 through the switch 26 is fed to all electronic components, including the processor 15. Sensor changes the value 7, sensor traversed path 24, the angle sensors 22 and 23 and with accelerometers 27 and 28 and magnetometer 29 (if any) information is transmitted to the controller 14 and further to the processor 15. After carrying out the necessary calculations information is transmitted to the memory unit 17. First of all, the readings of the displacement sensor 7 determines the distance between the rails 1, then the angles of inclination φ1 φ2, and the azimuthal position of a section of railway track, if the composition is provided respectively accelerometers 27 and 28 and the magnetometer 29.

This information is stored in the memory unit 17 with reference to the distance traveled. The distance traveled by the platform with an accuracy of 2 m, is determined by the sensor of the traversed path 24 and periodically monitored by the global remote positioning. The receiver global remote positioning 30 receives the signal with at least three satellites 33 system and it determines the location of the platform 11 with an accuracy of 2 meters, These data are transmitted to the controller 14 and then to the processor 15 and memory block 17.

Next, the processor 15 compares the distance between the rails 3 with the maximum permissible minimum and maximum value. When the deviation signal, such as sound. Simultaneously accelerometers 27 and 28 measure the longitudinal and transverse tilt of the slats 7 and 8). These values are also compared with the maximum allowable, and if they go beyond the normal limits, there is an audible or visual signal to the operator. If necessary, you can transfer a database from the platform 11 during the whole time of her move in process control to prevent the railway through the transmitting / receiving device 34 and 37 and the antenna 35 and 38 of the channel 32 to a remote server (6).

Calculation of the radius of rounding the track can be performed by the method (figure 9)below. Measured by the sensors 22 and 23, the rotation angles of the axes 21 and 22 may vary slightly. In the ideal case, without significantly reducing the accuracy of the calculations we can assume that these angles are equal to α1=α2, so calculate the average value of the rotation angle measuring rods:

Calculate the average radius of the rounding ways:

The radius of rounding of the outer rail can be determined by the formula:

R=Rcp+0.5 To L0.

The radius of rounding of the inner rail path can be defined by the formula:

R=R-0.5 To L0.

where L0 is the measured distance between the rails.

The application of the invention allowed:

1. To create a light and compact single axle railway truck with a manual actuator for the control path, providing a high accuracy of dimensions and EXT is installed functionality.

2. To extend the functionality of the system by additional measurements of the angles of the radius of rounding of rails and tilt platform.

4. More precisely, to tie all the information to the path travelled by more accurate measurement of the location of the truck. This is ensured by the introduction of a processor and a memory block of the original position of the truck using the global system for remote positioning such as GLONASS, GPS, Galileo or Compass.

5. Significantly more accurately determine the current position of the platform with the device through the use of global system for remote positioning.

6. To fully automate the measurement process and display the results on stationary equipment (computer or flash memory) via a special electrical connector (read from memory block) or transfer them to a remote server, or periodically, as information is accumulated, or continuously during the measurement process on a wireless communication channel.

1. Device for controlling the rails of the railway track, containing mounted on the carriage sensor distance traveled and the displacement sensor to measure the distance between the rails, United electrical connections to the controller, which is connected to the processor, and a memory, characterized in that the cart contains connected to the second platform by means of the swivel thrust measuring rail with the reference and measuring wheels, the measuring wheel is spring-loaded in the direction opposite to the reference wheel, and installed on the axis, which is made with the possibility of axial movement and in contact with the displacement transducer, the hinge rod contains the axis, with associated sensors of angular rotation, United electrical connections with the processor.

2. The device according to claim 1, characterized in that it comprises at least one accelerometer connected electrical connections to the controller.

3. The device according to claim 1 or 2, characterized in that it comprises a magnetometer connected electrical communication with the processor.

4. The device according to claim 1 or 2, characterized in that it comprises a receiver system global remote positioning such as GLONASS, connected to the processor.

5. The device according to claim 4, characterized in that it comprises a receiver system global remote positioning such as GLONASS, connected to the processor.



 

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