RU2400387C1 - System for control over occupation of car yard by means of radar monitoring - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention refers to railroad automation and is designed for depot equipped with gravity humps. The system consists of radar measurer and of unit for signal processing and control. Also the system includes a central computer complex consisting of an Ethernet switchboard with two computers connected to it. Further, the system consists of synchronisers each including a generator of synchronous pulses, of the Ethernet switchboard and of an industrial controller connected to the generator of synchronous pulses and to an input of the Ethernet switchboard. The system includes remote modules each comprising the radar measurer coupled with the industrial computer via the unit of signal processing and control. Receiving and transmitting aerials are connected to the radar measurer. The industrial computer of each remote module is coupled with the generator of synchronous pulses and the Ethernet switchboard of the synchroniser coupled with the Ethernet switchboard of the central computer complex via a communication line.

EFFECT: upgraded accuracy of radar control over moving units (cars) along whole area of car yard from moment of moving in to moment of pulling formed train out car yard; on-line determination of position of all rolling stock transport units.

1 dwg

Description

The invention relates to the field of railway automation and is intended for use at railway stations having sorting slides.

At marshalling yards, systems are used to control the filling of tracks (KZP), built on inductive axis sensors, inductive-wire sensors, KZP using rail threads for signal transmission. Sensors monitor the passage of current in the rail, which is divided into sections. In various KZP devices, the presence of current indicates the free or busy path. Instead of sensors, inductors and transformers can be used. The availability of information about the degree and nature of filling of the sorting paths allows you to generate and transfer this information via standard communication channels to the automated control system of the sorting stations and the shunting dispatcher in order to adjust the plan (sequence) of the dissolution of trains taking into account the filling of the sorting fleet

Another variation of the short-circuit breaker system is to control the filling of tracks using the pulse-sensing method (KZP-IZ), the main idea of which is to send a voltage pulse to the rail line and calculate the length of the free rail line using the shape of the transition curve.

The disadvantages of these devices are the lack of accuracy in determining the coordinates of cuts, the influence of climatic conditions and time of day, limited coverage, the use of a large cable network.

Considering that the existing well-known domestic KZP systems do not provide, for various reasons, stable work to determine the length free from cars of the initial part of the track, the problem of creating a reliable control system for filling tracks with advanced functionality is becoming particularly relevant.

The closest known for its technical nature and the achieved result is the selected device as a prototype for controlling the filling of the sorting fleet (RU 2003542, B61L 17/00, 1993).

This invention relates to radar and can be used in control systems for the movement of vehicles. The device comprises a radar speedometer with a transceiver antenna installed at the brake position of each sorting fleet path, an information input unit, a sorting path length memory unit, an information output unit, a cut length measurement unit, a distance to a distance measurement unit, an electronic track sensor mounted at the exit of the brake positions, an acceleration determination unit, a predicted length of a free path section determination unit, a channel selector for transmitting information about a distance to the release. These blocks are combined in a circuit that allows you to measure and adjust the speed of the roll-offs on sorting slides.

The known technical solution provides the measurement of the speed of an individual vehicle, the measurement of the length of the coupler and the comparison of these parameters with the distance to the previous coupler. In this case, the information output unit collects comprehensive information about the state of this sorting path of the foothill park.

The disadvantage of this device is the limited coverage of the radar speedometer, which does not allow measuring the speed of the cut-offs throughout the rolling process, the large number of different functional blocks involved and the many circuit dependencies between them, as well as the lack of duplication of equipment (a malfunction of any block will lead to failure of the entire device )

The technical result of the invention is to improve the accuracy of radar tracking of moving units (cars) throughout the sorting fleet from the moment of entry to the moment of drawing the formed train out of the fleet and determining the position of all transport units of the rolling stock in real time.

The specified technical result is achieved by the fact that a central computing complex consisting of an Ethernet switch with two computing computers connected to it, synchronizers, is introduced into the radar control system for filling the sorting fleet paths containing a radar meter and a signal and control unit, according to the invention, each of which consists of a clock generator, an Ethernet switch and an industrial controller connected to a clock generator and an Ethern input et-switch, and remote modules, each of which includes a radar meter connected via a signal processing and control unit to an industrial computer, while receiving and transmitting antennas are connected to the radar meter, the industrial computer of each remote module is connected to a clock generator and Ethernet - a synchronizer switch, which is connected via a communication line to the Ethernet switch of the central computing complex, each remote module is mounted on the lighting pylon and located above the tracks of the sorting park.

The radar monitoring system for filling the sorting fleet (RLS-KZP) is designed to perform the following functions:

- ensuring monitoring of rolling stock units throughout the sorting park;

- providing radar tracking of moving units of the rolling stock from the moment they enter the sorting fleet until the formed train is drawn out of the fleet;

- determining the location (coordinates) of all transport units of the rolling stock located in the control zone in real time;

The system provides current information on the movement of units of rolling stock throughout the sorting park in real time.

The drawing shows a structural functional diagram of a radar control system for filling the sorting fleet.

The system contains a central computing complex 12, consisting of an Ethernet switch 10 with two computing computers 11 connected to it, synchronizers 6, each of which consists of a clock generator 9, an Ethernet switch 8 and an industrial controller 7 connected to a clock generator 9 and the input of the Ethernet switch 8, and remote modules, each of which includes a radar meter 3 connected through a signal processing and control unit 2 to an industrial computer 1, while to a radar 3, receiving 4 and transmitting 5 antennas are connected, an industrial computer 1 of each remote module is connected to a clock generator 9 and an Ethernet switch of a synchronizer 8, which is connected via a communication line to an Ethernet switch 10 of a central computing complex 12, each remote module is mounted on a lighting support and is located above the tracks of the sorting park.

The calculators 11 of the Central computing complex (CVC) 12 perform the following functions:

- Communication with an external information integrated system for automated control of the sorting process (KSAU SP);

- synchronization and binding of a timeline;

- planning and dispatching of observations by radar meters (RI) 3;

- the formation and sending to the outdoor equipment of the source data for observations of RI 3;

- receiving data from outdoor equipment;

- part of the primary signal processing;

- secondary statistical processing.

The synchronizer 6 performs the operation of self-construction of the delays of the clock signals with a large difference in the lengths of the connecting cables. The command for issuing the clock signals to the required pair of RI 3 radars is formed by the CVC 12 and transmitted through the Ethernet switch 10 to the clock generator 9, which through the Ethernet switch of the synchronizer 8 and the industrial controller 7 supplies the synchronization signal to two of the eight connected to it RI 3 radars indicated in a team.

During operation, the RI 3 generator emits sounding pulses. The RI 3 receiver receives the reflected signal from the specified range gate and processes this signal. Signal processing in the RI 3 receiver in each sensing period includes three main stages:

- phase detection of the received signal with a reference signal, which is in the form of a copy of the probe signal of the transmitter;

- signal amplification;

- digitization of the signal and its transmission to the signal processing and control unit (POSU board) 2.

The POSU 2 board carries out high-speed primary signal processing according to the moving average algorithm and transmits the processed signal to industrial computer 1 for its subsequent processing and transmission via an external interface. It also provides control of the elements of the boards of the receiver and generator RI 3.

The receiving 4 and transmitting 5 antennas of the external modules (VM) are based on the STV-0.6-1.1 AUM parabolic antenna, retrofitted with specially designed broadband irradiators.

Industrial computers 1 perform the following functions:

- self-identification in the network and network interaction;

- submission of control commands to the POSU 2 board;

- synchronization and binding of the timeline;

- receiving and measuring data from the POSU 2 board;

- part of the primary signal processing;

- sending the measurement results to the CVC 12.

The radar-KZP system determines the following parameters of the position of the cut-offs on the territory of the sorting park:

- The speeds of the cut-offs, while the error in determining the speed of movement in the speed range from 0 to 1.5 m / s should be no more than 5%, at speeds above 1.5 m / s - no more than 2%; the minimum estimated speed of the cutters along the sorting paths is 0.2 m / s.

- Coordinates of aiming points for each sorting path (tail coordinates and cut length); the error in determining the coordinates of the stop of the trailer on the tracks of the sorting park is not worse than 5 m.

- The degree of filling of the sorting path (coefficient of useful filling), defined as the total length of the windows between the standing unlinked moving units for each sorting path in real time; distribution of windows along the sorting path; detectable window length of at least 3 m.

Information on the speed of a moving trailer, as well as the coordinates of its movement on the tracks of the sorting park, should be updated at least after a time interval during which the trailer passes a path of no more than 5 m.

The radar control system for filling tracks works as follows.

During the dissolution of the trains, the CVC 12 generates and issues the control command of the corresponding VMs, in the area of responsibility of which the cut-offs will move, and these VMs enter the standby mode of the cut-offs.

In standby mode, the VM strobe is set at a minimum range in the corresponding elementary field of view. A radar signal from this minimum range is constantly supplied to CVC 12. When a clip appears in the gate, the VM generates information about the distance to the clip and its speed. After detecting the cut-off and determining its speed, the system switches from the “standby” mode to the “tracking” mode. CVC 12 makes a predicted trajectory of the cut-off, according to which the position of the strobe of the VM is controlled. The predicted cut-off path is constantly adjusted based on the measurements obtained. Based on the adjusted route, information is generated about the coordinate of the stop of the release.

The radar-KZP system is based on the use of ultra-wideband radars with a signal duration of about 4 ns. Each RI 3 radar monitors in the area of responsibility limited by the width of its radiation pattern. Within this zone, the RI 3 radar detects objects in narrow gates in range, the length of which lies within 1-0.5 meters

Moreover, to measure the speed of vehicles and control the filling of the sorting fleet, their irradiation is carried out simultaneously by several low-power, highly informative ultra-wideband radars, united by a single information space, arranged in rows, so that each mobile unit falls into the field of action of several radars installed along the way movement or acting after.

Economic efficiency from the implementation of the proposed radar control system for filling the sorting fleet is achieved due to the following factors:

- reducing the downtime of wagons by reducing the time for dissolution of trains and shunting movements;

- reduction of operating costs for the household signaling. The equipment of the KZP radar does not require periodic maintenance in RTU conditions and is operated to the limit. The functionality of the radar-KZP is preserved in the event of failure of up to 20% of the elements of the system, operability - in the event of failure of up to 50% of the elements of the system;

- reduction of capital costs during new construction, due to the reduction of cable cores during installation of on-site equipment by more than 5 times (by 80%);

- reduction of energy consumption by more than 3 times (by 67%), due to the use of modern elemental base, reduction of equipment units and the use of modern technical solutions.

Claims (1)

A radar control system for filling the sorting fleet paths, comprising a radar meter and a signal and control unit, characterized in that a central computer complex is introduced into it, consisting of an Ethernet switch with two calculating computers connected to it, synchronizers, each of which consists of a clock generator, an Ethernet switch and an industrial controller connected to a clock generator and an Ethernet switch input, and external modules, each of which includes a radar meter connected via a signal processing and control unit to an industrial computer, while a receiving and transmitting antenna is connected to the radar meter, the industrial computer of each remote module is connected to a clock generator and an Ethernet synchronizer switch, which is connected via Ethernet via a communication line -switch of the central computing complex, each remote module is mounted on a lighting support and located above the sorting park paths .