KR960011053B1 - Vehicle chasing method using railroad information - Google Patents

Abstract

The apparatus and method tracks speedily the position of the railroad vehicle on the railroad track by using an AVI(automatic vehicle identification) and a relay interface unit to improve the efficiency of the vehicle scheduling. The apparatus comprises: sensors(23) installed on each railroad track to sense the position of the vehicle; a 1st relay(22) receiving the signals sensed from the sensors(23) to generate the correspondent addresses; a process computer(20) processing the address transmitted from the 1st relay(22); a displayer & operation panel(26) displaying the data from the computer(20) and inputting the command for the computer(20); a 2nd relay(24) operated by a control signal from the computer(20).

Description

Vehicle tracking device and method using railway track information

1 is a block diagram of a vehicle number detection system for a conventional railroad number tracking.

2 is a block diagram of a relay interface unit used in the present invention.

3 is a diagram illustrating a track setting of a railroad track according to the present invention.

4 is a flowchart showing a vehicle tracking method for explaining the present invention.

* Explanation of symbols for main parts of the drawings

20: process computer 21: I / O port

22,24: relay 23: truck detection sensor

25: beacon 27-29: bus

1T-4T: Track

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle tracking method on railroad tracks in a steel mill, and more particularly, to a vehicle tracking device and method using railroad track information of a process computer relay interface relating to a vehicle detection sensor and a control signal.

Unlike general railroads, automatic control of steel transportation within steel mills raises the need for immediate replacement with minimal equipment and facilities for the volume of traffic generated between processes in accordance with the production process plan. Therefore, the steelworks yard rail transport management system aims to shorten the transportation time and improve the efficiency of vehicle movement by scheduling locomotives based on the location of each vehicle, operation status, raw materials, and product transportation status. In particular, in the automation of railway operation, the tracking of the vehicle location informs the operator of the exact location of the vehicle and helps the transportation management.In addition, the automatic transmission of the driving performance information to the production control according to the location of the vehicle and the automatic transportation plan As it is used as basic data such as drawing, accurate tracking of vehicle position is an important function to support the accuracy of rail transportation management system.

Up to now, the vehicle number detection system (AVI: Auto Vechicle Indentification), as shown in FIG.

The AVI system installs a transponder 11 on a locomotive 10 that traverses a railway track in the premises, and when the locomotive breaks the magnetic flux of the Energizing Loop 15 provided on the railway rail. The power is supplied by the generated likelihood current, and thus the transponder 11 transmits the locomotive number to the reader 13 through the antenna 12.

At the same time, the Axel Counter 16 is installed at the position crossing the railroad track of the site where the magnetization loop 15 is installed, so that the number of wheel counts of the vehicle and information about the vehicle traveling direction are read. To be sent to.

Therefore, the reader 13 transmits the vehicle number, the axle quantity, the heading direction, and the antenna number to the programmable logic controller (PLC) 17 to be transmitted to the process computer 18 of the terminal. The monitor monitors the movement of the vehicle.

However, in the existing AVI system as described above, vehicle tracking success rate is very low due to loss of vehicle number detection information and error in vehicle direction due to installation condition of vehicle number detection device, noise inflow, and aging of equipment. do.

In order to solve the problems in the vehicle tracking method according to the existing AVI system of the present invention, an object of the present invention is to provide a vehicle tracking device and method for executing the vehicle tracking without being affected by the installation conditions and noise.

In order to achieve the above object, the technical means of the present invention sets a track for each section, installs a vehicle detection sensor on each track, receives a specific address input from a relay driven by receiving a vehicle detection signal output from the vehicle detection sensor. Processing is performed by the process computer, and the processing result is displayed.

Hereinafter, the present invention will be described based on the accompanying drawings.

2 is a block diagram of a relay interface for applying the present invention.

The relay 22 is driven by the vehicle detection signal output from the vehicle detection sensor 23 provided on the bus of each track, and the specific address of the vehicle is driven by the relay 22 to the I / O port. It is configured to be provided to the process computer 20 via 21.

In addition, the vehicle information processed and updated by the process computer 20 is configured to be output to the display and the operation panel 26 via the I / O port 21, and is input to the display and the operation panel 26. (E.g., starting point or pressure point command, etc.) are processed in the process computer 20 to provide a control signal to the relay 24 via the I / O port 21, and the operation by the operation of the relay The pressure point or starting point output information by the panel is configured to be transmitted to the field signal 25.

The vehicle tracking method of the present invention can be realized with the railroad track information of the vehicle by the relay interface unit.

3 is an exemplary diagram illustrating a track on a rail track for tracking a vehicle according to the present invention. Each vehicle 27-29 is provided with a vehicle number detection device AVI, and each track 1T-4T has a truck detection sensor 23. ) Is installed.

First, if the track 2T is occupied in the track 1T occupancy recognition state by the wagon detecting sensor 23, the process computer 20 determines that the vehicle registered on the arbitrary bus 27 is the bus 28 or the bus. Recognize that it moves to 29 and view it as the start of tracking.

After the start of the tracking, if the trick 3T or the track 4T is occupied according to the state of the signal (train) 25 after the track 1T and the track 2T are cleared, the process computer is recognized as being finished. The vehicle displayed on the bus 27 on the display and the operation panel 26 by 20 is moved to the bus 28 or the bus 29.

4 is a pull chart showing a vehicle tracking method according to the present invention. The railroad track vehicle is tracked from the track occupancy signal input through the relay interface unit. First, in step 401, the vehicle track detection signal is received from the truck detection sensor 23 to check a pre-occupancy track. The pre-fiber track refers to the track already occupied when tracking is started, which in the case of FIG. 3 is the track 1T.

In this state, the flow advances to step 402 to check the track status, and to check whether the trigger track has arrived in step 403. The trigger track is a track at which tracking is started, and refers to a start track and corresponds to track 2T in FIG. 3.

If the trigger track does not occur in the track status check, repeat step 402 to continuously check until the trigger track occurs, and if trigger track occurs, check the signal 25 status in step 404 and set the stepping flag to 1. To move the vehicle to the next bus.

Thereafter, the track state is checked in step 404 to determine whether the track is cleared in step 405. If the track is not cleared, step 404 is repeated, and if the track is cleared, the last clear track is turned off to clear the past track.

In step 407 it is checked whether the destination track (eg 3T or 4T) is reached. If the tracking start point is zero or the tolerance line, all tracks 1T, 2T are cleared after the start of tracking and all tracks 1T, 2T are cleared. If the tracking is terminated, and if one or all of the tracks 1T and 2T that have passed while the destination track 3T or 4T is occupied are not cleared, the vehicle separation tracking is considered as vehicle separation and the process is as follows. same.

That is, after the destination track is occupied, the track state is checked in step 408 to determine whether the vehicle is separated in step 409. If the vehicle is separated, only the locomotive is determined to move in step 401. If the vehicle is not separated (when all the past tracks are cleared), proceed to step 411 to check AVI and if there are no vehicle detection signals remaining on each bus, proceed to step 413 to determine that the vehicle is moving, and end with this program. If there is a vehicle detection signal of the AVI of the specific bus, the process proceeds to step 412 to determine that the vehicle is missing and moves the missing vehicle to the destination.

As described above, the present invention can quickly track a railway vehicle without loss of vehicle detection information and direction detection error on a railroad track by using a conventional AVI and a relay interface unit. This results in a unique effect of shortening the transit time and improving the accuracy of the overall functions of the railway process computer through the optimization of vehicle movement.

Claims (2)

A vehicle tracking method for rail tracks, the method comprising: checking a pre-occupied track by receiving a wagon detection signal from a wagon detection sensor installed at each track of the rail track, and checking whether the trigger track is generated by checking the tracks; Clearing the track by checking the tracks when a trigger track has occurred, clearing the track that has passed by turning off the last track when the track is cleared, determining whether to reach the destination track, If the vehicle is separated, and if the vehicle is separated, the locomotive is moved only and the program is terminated. If the vehicle is not separated, the vehicle number detection system is checked to determine if there is no vehicle detection signal remaining on each bus. And determining that the vehicle is missing if there is a vehicle detection signal. Vehicle tracking method of railway track. A vehicle tracker for railway tracks comprising: a wagon detection sensor provided on each track on a rail track and a wagon detection signal provided on each track and output by the wagon detection sensor of the track to be driven to output the address A process computer for receiving and processing a first relay, a drive address of the driven first relay, receiving and processing an input command, and receiving and displaying data from the process computer, and inputting a command to the process computer. A railroad track information comprising: a display and an operation panel; a second relay for receiving a control signal from the process computer; and a signal receiver for receiving a command processing result signal of the process computer from the second relay. Vehicle tracking device used.