Method of identification of rail running objects

FIELD: railway transport.

SUBSTANCE: proposed method comes to recording signals from two wheel pickups when they are intersected by wheelsets of train. Wheel pickups are arranged at preset fixed distance relative to each other whose value is less than minimum possible interaxle distance. At distance. At moment of intersection of first wheel pickup, passive receivers-transponders installed on train running units are irradiated by SHF signal, and pulse is formed to start master timer referring time counting system to running train. Data on structure of interaxle distances of wheelsets corresponding to definite types of running units and data on running units corresponding to codes recorded in memory of passive receivers-transponders are preliminarily recorded in memory of measuring device. Algorithms for determining in time location of passive receiver-transponder and speed and direction of train running are provided. Periodicity of recorded signals is restored in case of skip in recording of signal from wheel pickups and/or presence of false information. Train is identified basing of data from wheel pickups and passive receivers-transducers.

EFFECT: improved reliability of identification of running objects.

6 dwg

The invention relates to railway transport and can be used in centralized systems of automatic control of mobile objects of railway transport.

A known method for the identification of vehicles, based on the irradiation of a passive sensor high-frequency signal of the reading device with the passage of the sensor by this reader. Horny sensor generates a response code message that is received and decoded by the reader (U.S. patent No. 4739328, CL G 01 S 13/74, 1988).

There is a method in which it is proposed to use the on-off high-frequency signal readout unit for exceptions read passive sensor with neighboring rolling stock (RF patent No. 2191127 C1, 7 B 61 L 25/02).

The disadvantage of these methods is the possibility of erroneous binding of the sensor to its object or false binding of neighboring sensor composition in conditions of incomplete composition code sensors (for example, failure of one of the sensors), disregarding the length of the irradiation zone code sensor microwave signal readout unit or change the speed and maneuvers of the identifiable structure.

The method of identification (RF # 20009978 C1, 7 B 61 L 25/02)adopted for the prototype, which consists in counting the axes and movable single the C dimension Miasnik distances. On the measured at each control point distances between the wheel pairs is formed sequence for each part in the order of the wheelset of all movable units, memorize them, and if the plot centralized control of several compounds with the same number of wheel pairs and cars make a decision about the identity of the composition of the coincidence of the sequence of distances between the wheel pairs.

The disadvantage of this method is that it is not actually solved the problem of identification of the mobile unit composition in the absence of identification of the sensor and the binding mechanism of this sensor to the object. In addition, when a partial loss of information, ambiguity movement on one of the control sections (elements return movement, deceleration, etc.) method does not provide the stated goals.

The technical result of the invention is to improve the reliability and accuracy of identification of vehicles, including under conditions of incomplete information from the vehicle.

The technical result is achieved in that in the method of identification of rolling stock, which consists in recording the signals generated at the points of intersection of the wheel pairs of the rolling stock two wheel sensors installed at the checkpoint raspolojennyh from each other in the direction of movement of rolling stock on a given fixed distance, the value of which is less than the minimum center distances, determining time intervals between the signals from two wheel sensors generated and recorded at the point of intersection of these sensors wheel pair and time intervals, the values of which for a given fixed distance between the wheel sensors detect Majone distance with the subsequent comparison of these data with previously recorded data in the memory of the measuring means, characterized in that the passage of the first wheel of the first movement of the wheel sensor is formed impulse, which starts the timer time stamp, tying the temporal reference system to the moving part that is preloaded into the memory of the measuring means to record data on the structure interaxial distances wheelset, certain types of mobile units and data on mobile units, the corresponding codes stored in the memory passive transponders that are installed on mobile units composition, irradiation of the microwave signal passive transponders produce after crossing the first wheel sensor first a pair of wheels of the rolling stock, and reading and writing code signal is carried out at the occurrence of the transponder in the exposure zone of the microwave signal, p is and write an entry transponder in the area of irradiation of the microwave signal and the moment of his exit from this zone of irradiation, and the data obtained to determine the temporal location of the transponder on the time intervals between recorded signals generated at the points of intersection of the wheel sensors, wheel pairs, determine the speed and direction of movement of the rolling stock and in the case of pass in the recording of signals and/or the presence of false signals, indicative of the change in the speed or direction of motion, restore the frequency of the recorded signals and determine marzonie distance and compare with pre-recorded in the memory of the measuring tool data and the results of the comparison determines the structure and the type of mobile units and the position of the transponders, which establish the identity of the transponders to the movable units of the identifiable structure and comparison results code signals confirm the type of the mobile unit and its membership, determine the sequence of occurrence of the mobile units in the composition and record the time of passage of the identified composition past the checkpoint.

With the passage of the first wheel of the first movement of the wheel sensor is formed impulse, which starts the timer of the time stamps by the reading device, assigning a temporary reference system to the moving part, and includes a generator microwave signal is through composition by outdoor reader timer reader generates timestamps pulses from the wheel sensors when passing over them wheels of objects, which are stored together with the number of wheel sensor in the buffer for the wheel sensors, and the timestamps of the input code of the sensors in the area of oblojennosti antenna of the reader and exit, which are stored together with the decoded identification codes of the sensors installed on the object structure in the buffer code sensors.

The data from each checkpoint will come on line in the device processing of primary information (possibly using a standard PC with specialized software), containing a database of sensor objects.

Possible type of the received data (second and third column).

Price quantum time stamp timer datasets Δt=0,0000853 c.

In the computing device:

1. Defines a temporary position encoder according to the samples of the input and output of the encoder from the zone of irradiation (e.g., averaging time samples encoder):

For the first array

18274 SS

84340 SS

For the second array

17083 40892012636148D5000000000004010

56710 40892066434648D400000000000402C0

140093 AS

For the third array

107879 AS

102283 AS

2112603 AS

2. Determined intervals regularity of alternation of the temporary provisions of the wheel pairs of objects.

For example, a check condition index position i=index position i+1"

In the first sequence the entire array of regular,

in the second - three array of regularity,

in the third four array regularity.

3. Determines the direction of movement of the wheelsets and the intervals persistence of direction speed.

Is the numbering wheel pairs of objects with given intervals regularity.

Determines the speed at each interval assuming its direction from the reference wheel sensor of the odd rows (starting with the first) to the even and odd lines (starting with the second) to odd.

V_i=S_b/(t_i+1-t_i), S_b- base distance between the wheel sensors (here

S_b=1 m).

t_i- countdown wheel sensors in s (t_i=B_i*Δt), i=1,2,3,4...

The true sequence of timestamps is characterized by a smooth speed change.

A comparison of the increments equivalents speed (the difference between the increments of time samples in adjacent areas of the array shown in the fourth and fifth columns).

The value increments with an odd starting point

Δ_inötsch.=(In_2i-B_{2i-1 ),where n is the number of increments, i=1,2,3,4...}

_{With an even starting point}

_{ΔiThu.=(B2i+1In2i),where n is the number of increments, i=1,2,3,4...}

For the first array comparing adjacent increments Δ_inötsch.<Δ_iThu. all array data.

That is, the array starts with odd numbers and the direction of motion does not change during the movement.

In the sample sequence identity there are no matching values.

For the second data array.

In the first interval

Δ_inötsch.<Δ_iThu., that is, the movement starts from the first wheel to the second sensor.

On the second and third plot speed saves direction (Δ_inötsch.<Δ_iThu.).

When this increment with subsequent matching reference give a sharp drop in speed (increase time - 6814 instead 3591)that does not correspond to the physics of the motion of the mass inertia of the object.

There is a false re-count in the channel of the first wheel sensor.

In the sample sequence identity there are no matching values.

For the third data array.

In the first interval Δ_inötsch.<Δ_iThu., that is, the movement starts from the first krasnostatska to the second.

On the second plot the velocity changes its direction of motion (Δ_iThu.<Δ_inötsch.).

In the third plot the speed again changes its direction of motion (Δ_inötsch.<Δ_iThu.).

At the fourth site again changes the direction of motion (Δ_iThu.<Δ_inötsch.).

In the sample sequence identity there is a matching value, indicating the presence of a backward movement.

4. Recovering a failed plots.

For the second array:

Recovering a failed plots in terms of equality of the speed of passage of the trolley wheel sensor means excluding from the dataset of repeated data samples of the first wheel sensor

5. Is the numbering wheels of the rolling stock with respect to the direction of movement.

6. Intervals with identical numbers are excluded from consideration. For the third array establishes the fact of the return of part of the zone outdoor reader device.

7. Defined by the base distance and average speed wheelset 6 distance between adjacent wheel pairs S_l(the last column of the array).

S_l=S_b(B_2i+2+B_2i+1-B_2i-B_2i-1)/(B_2i+2-B_21+l+B_2i-B_2i-1),

where i=1, 2, 3, 4...

8. From the database of mobile units determine alauda for matching items (trucks, megalogenis distances).

For the first array

Two sections of the passenger locomotive type CHS7

For the second array

3-section freight electric locomotive type VLR

9. Determined by the provisions of the code of sensors on mobile units and eliminated false

For the first array

The sensors are located behind the second wheel of the first truck

For the second

Sensors on the first and third sections of the second wheel of the first truck

In the second section of the sensor is placed in the intersection space (zone 5,95 m), and therefore excluded as a false read from the counter part.

10. Built target message with the accounting code of sensors and the time of passage of composition.

For the first array

The direction from 1 to 2

CHS7(A) 12022802

CHS7(B) 12022794

TIME=07.06.04 15:45:28

For the second array

Direction from 2 to 1

VLR(B) 12636148

VLR

VLR(A) 12636130

TIME=02.04.04 11:23:11

For the third array of possible message about the appearance without pass-through passenger locomotive CHS7 ID 12025623

TIME=07.06.04 14:37:12

11. The final message is stored in the system memory until the passage of the following composition (to control the situation with the stop of the composition before the control point).

In the absence of the traction unit in the following composition and is present in the composition of the basic units is formed about the United composition with the composition of the memory system.

The implementation of the method is illustrated by means of system identification are presented in figures 1, 2, 3, 4, 5. The identification system 1 consists of passive sensors 1 identification of the mobile units 2, outdoor readers (NSO) 3...3n and devices 4 processing of primary information the NSA. The encoder 2 includes a microwave antenna 5, the rectifier 6 microwave signal and the limiter 7 power driver 8 code (for example, chip RT)containing the generator 9 clock pulses, the unit 10 to the memory identification code, the imaging unit 11 pulse sequence, a modulator 12 wave load antenna.

Outdoor reading device 3 contains the first wheel sensor 13 and the second wheel sensor 13¹set in the near to outdoor reader rail on the distance between a lower minimum interaxial size truck, with the release of the first wheel sensor 13 is connected to the input of the first driver 14 pulses, the output of which is connected to the first channel 1K irradiating a reading device (reader) 15, and the output of the second wheel sensor 13¹connects to the input of the second driver 14¹pulses, the output of which is connected to the second channel 2K reader 15, the output of which is connected through the modem 16 to the local communication lines.

The number is red sensors can be for example, inductive, forming a no-current (differential current) mode of recording the passage of wheels over the sensor.

The pulse shaper is made, for example, in the form of a resistor-load of wheel sensor connected to the analog comparator, pulse forming logic level.

Reader 4 functionally includes receiving and transmitting device 17, the signal processor 23 and the block of the Central processor unit 26 that controls the operation of the reader. Receiving-transmitting device comprises a master oscillator 19 of the carrier frequency, one end of which is through the circulator 20 is connected with the transmitting antenna 18 and the second output with the first input of mixer 21 quadrature splitting signal to the second input of which is supplied via the circulator signal from the transmitting-receiving antenna of the reader. Two predetection signal from the outputs of the mixer is fed to two input polonoroeste shaper 22 levels, which are amplified and filtered by high frequency and fed to the signal processor 23, a counter 24 duration of phase States, the output of which is connected to the input of the comparator 25 durations.

The unit of the Central processor 26 includes a microprocessor 27 (for example, IC EW-40, encompassing the processor element with an internal 16-bit data bus and an external 8-bit buses is th data; 3 independent 16-bit timer counter; 2 asynchronous serial transceiver; a controller interrupt 5 external interrupt sources and 2 internal; the driver select signals for the various areas of allocation in memory space and the space of input devices-output), a persistent storage device with the control program for the microprocessor 28 (e.g., dynamic FLASH ROM Am29C010JI company AM, operational storage unit 29 for storing the incoming data, the processing unit interrupts the microprocessor signals from the pulse shaper wheel sensor, signal processor and the generator 30 microwave, block 31 transceivers interface (for example, D209R transceiver RS-232) to exchange microprocessor data through a modem and a local communication device, processing of primary information.

Modem communication with a local communication line can be any of the standard version.

The processing device primary information consists of a computing unit (e.g., a standard PC with software that implements the computational process of the method), expansion cards, serial ports, modems standard configuration.

The system works as follows.

When hitting the composition of the first wheel for the next movement the structure of the wheel sensor, for example, the first shaper 13 14 pulses, is connected to this sensor generates a pulse that enters the channel termination device and the generator 30 UHF reader. In the result, reset the timer to the time grid of processor, RAM in the memory area of the wheel sensors is written the number of the sensor and the countdown timer (zero) and a generator 19 microwave. The signal generator through the circulator 20 is fed to the input of the antenna 18, which begins to probe the space in the zone of the beam, while some of the energy from the generator is supplied to the first input of mixer 21. Code sensor 1 is installed behind the second wheel of the first truck of the composition and therefore, as the movement enters the radiation zone. The signal SHF adopted by the antenna 5 of the sensor is rectified by the rectifier 6 and through the limiter with capacitive filtering supplies shaper 8 code. The driver code produces a pulse code sequence in accordance with which the modulator 12 changes an impedance load of the antenna, modulating reflective properties of the antenna. In the reflected amplitude-modulated code sequence signal of the microwave supplied to the antenna of the reader and through the circulator to the second input of the mixer. The mixer 21 implements the heterodyne principle discocactus the signal on two pillars, shifted by 90°. Two predetection signal from the outputs of the mixer is fed to two input polonoroeste shaper 22 levels, which are amplified and filtered by high frequency and fed to the signal processor 23 in the counter 24 duration of phase States, the output of which is connected to the input of the comparator 25 durations.

The output of the signal processor is formed of the binary code sequence, which is supplied to the CPU 27, and at the same time through the device interrupt is generated cycle interruption as a result, the sequence from the read value of the timer time grid processor enters the random access memory 29 in the area assigned code sensors. Upon receipt of information from the wheel sensors and the code of the sensors is transferred to the respective area of RAM. The processing device primary information queries through the serial ports on a local communication line connected to the floor of the reading device, and if there is information reads each in a sequence of timestamps of the indexed wheel and code sensors.

Further according to the algorithm of the proposed method identifies compounds that have passed by the NPC, connected to the processing unit of the primary information 5.

Before agemy the method is tested in the identification system of railway transport of the Russian Federation and showed high reliability definition of mobile units, and composition in General.

The method of identification of rolling stock, which consists in recording the signals generated at the points of intersection of the wheel pairs of the rolling stock two wheel sensors installed at the control point and spaced from each other in the direction of movement of rolling stock on a given fixed distance, the value of which is less than the minimum center distances, determining time intervals between the signals from two wheel sensors generated and recorded at the point of intersection of these sensors wheel pair and time intervals, the values of which for a given fixed distance between the wheel sensors detect Majone distance with the subsequent comparison of these data with previously recorded data in the memory of the measuring tools, characterized in that the passage of the first wheel of the first movement of the wheel sensor is formed impulse, which starts the timer time stamp, tying the temporal reference system to the moving part that is preloaded into the memory of the measuring means to record data on the structure of the inter-axle distance wheel pairs that correspond to specific types of mobile units and mobile units, the corresponding codes stored in the memory passive transponder you need to program is letcikov, installed on mobile units composition, irradiation of the microwave signal passive transponders produce after crossing the first wheel sensor first a pair of wheels of the rolling stock, and reading and writing code signal is carried out at the occurrence of the transponder in the exposure zone of the microwave signal, while the write logs of the transponder in the area of irradiation of the microwave signal and the moment of his exit from this zone exposure, and the data obtained to determine the temporal location of the transponder on the time intervals between recorded signals generated at the points of intersection of the wheel sensors, wheel pairs, determine the speed and direction of movement of the rolling stock and in the case of pass in recording signals and/or the presence of false signals, indicative of the change in the speed or direction of motion, restore the frequency of the recorded signals, determine marzonie distance and compare with pre-recorded in the memory of the measuring tool data and the results of the comparison determines the structure and the type of mobile units and the position of the transponders, which establish the identity of the transponders to the movable units of the identifiable structure, and on the comparison of the code signals confirm the type movably the unit and its accessory, determine the sequence of occurrence of the mobile units in the composition and record the time of passage of the identified composition past the checkpoint.