RU2793987C1 - Automated weighing system for rolling stock(aws rs) - Google Patents

Abstract

FIELD: instrumentation and signalling equipment.

SUBSTANCE: instrumentation and signalling equipment designed for weighing railway cars, mainly in the process of their movement. Automated rolling stock weighing system comprises strain sensors mounted on rails in the space between sleepers, connected to the first and second controllers, respectively, and a calculator. There are three blocks of random-access memory (RAM), a subtraction block, a block for fixing the beginning and end of the car, a television camera with a built-in controller for reading car numbers, and a counter. At the same time, the block for fixing the beginning and end of the car is connected to the control inputs of the RAM, the television camera, as well as the input of the counter and the calculator, the outputs of the first and second controllers through the first RAM, the outputs of the second and the third RAMs, also connected to the outputs of the first and second controllers, through the subtraction block, and the outputs of the counter and the controller for reading the numbers of the cars of the TV camera are directly connected to the computer, which is also connected to the information and computer system of the railway.

EFFECT: functionality of the rolling stock weighing system is expanded.

1 cl, 1 dwg

Description

The invention relates to instrumentation and signaling equipment designed for weighing railway cars and tanks, mainly in the process of their movement, while obtaining information about the axle load and the total weight of the car with its reference to the identified identification number of the car, the presence of a dangerous uneven load on the wheels of each axle, linking a wagon with a certain weight and inventory number to its serial number in the train, matching the train with data from the railway computer system.

Currently, various types of weighing devices are known for measuring the weight of stationary and moving units of railway rolling stock - cars, tanks, platforms, etc. Such devices most often use strain gauges mounted on measuring rails in the space between sleepers. In particular, the Avitek-Plus rail tensometric scales chosen as an analog are known (VD-30 railcar scales of the VD-30 type. Prospect of the Avitek-Plus company. Internet resource www.avitec.ru), containing measuring rails built into the cut railway track, and electronic equipment for weighing cars in motion and static. Measuring rails are equipped with strain-gauge resistive strain gauges connected mainly in a bridge circuit and generating information about shear forces in the rail as a multi-support beam. These sensors are located, as a rule, in the zone of the neutral axis of the rail approximately in the middle of its neck.

The considered scales have an acceptable accuracy of determining the load from each wheel axle, but they do not make it possible to form complete information about the passing train, because do not allow:

- link the calculated total weight of the car with its inventory number, identified using technical vision;

- identify dangerous uneven load on opposite wheels of one wheel axle;

- get generalized information about the wagon, including its weight, inventory number and sequence number in the composition.

- to compare the actual data on the composition (weights and inventory numbers of cars in the order of their movement in the train) with the initial data on the composition formed in the information and computer system of the railway when completing the train.

These shortcomings significantly reduce the functionality of the selected analog and do not allow for its full integration into the automated control system of the railway.

Known selected for the prototype rail strain gauge scales (RF patent No. 2685741 dated 08/14/2018), designed for wheel-based weighing of railway cars in motion. The scales contain encapsulated strain sensors, mainly strain gauges, glued to the rails, and controllers connected to a computer and power supply.

The disadvantage of the prototype, as well as the analog, is its insufficient functionality, which does not allow to form a sufficiently complete picture of the composition and compare it with the characteristics of the composition formed in the computer system of the railway when completing the composition.

The purpose of the invention is to expand the functionality of the prototype by linking the calculated total weight of the car with its inventory number, identifying a dangerous uneven load on the opposite wheels of each wheel axle, obtaining generalized information about the car, including its weight, inventory number and sequence number in the composition, as well as comparison of the actual identified data on the composition with the initial data formed on the composition in the departure park.

The goal of the invention is achieved by the fact that, along with the strain sensors installed on the rails in the intersleeper space, connected respectively to the first and second controllers, and the computer, there are three blocks of random access memory (RAM), a subtraction unit, a block for fixing the beginning and end of the car, a television a camera with a built-in controller for reading car numbers, as well as a counter. At the same time, the block for fixing the beginning and end of the car is connected to the control inputs of the RAM, the television camera, as well as the input of the counter and the calculator, the outputs of the first and second controllers through the first RAM, the outputs of the second and third RAMs, also connected to the outputs of the first and second controllers, through the block subtraction, and the outputs of the counter and the controller for reading the numbers of the cars of the TV camera are directly connected to the computer, which is also connected to the information and computer system of the railway.

The block diagram of the device is shown in the figure.

The device shown in the figure contains strain sensors 1, 2 installed on both sides of the rail track in the space between sleepers, connected respectively to the first and second controllers 3, 4, and a calculator 5. There are three RAM blocks 6, 7, 8 , a subtraction unit 9, a block for fixing the beginning and end of the car 10, a television camera with a built-in controller for reading the numbers of cars 11, and a counter 12. The block for fixing the beginning and end of the car 10 is connected to the control inputs of the RAM 6, 7, 8, television camera 11, as well as the input of the counter 12 and the calculator 5. In addition, the outputs of the first and second controllers 3 and 4 through the first RAM 6, the outputs of the second and third RAM 7, 8, also associated with the outputs of the first and second controllers 3 and 4, through the subtraction unit 9 , and the outputs of the counter 12 and the controller for reading the numbers of cars of the television camera 11 are directly connected to the calculator 5, which is also connected to the information and computer system of the railway.

In the practical implementation of the device, the following technical solutions can be used. As deformation sensors 1 and 2, induction sensors of the Priborist enterprise (Russia, St. Petersburg) or the company "Mullenom Systems" (Russia, Cherepovets), as well as tensometric resistive sensors of the BHF1K-2FG bridge type from Great Vendor can be used. Controllers 3, 4, RAM 6, 7, 8, subtractor 9, counter 12 can be implemented on the basis of modular computers. As calculator 5, you can use a typical computer with the appropriate software and multi-channel input.

The software of the computer 5, in particular, provides: - receiving information about the number of locomotives in the composition via the local network from the automated control system of the marshalling yard;

- logging data on passing trains;

- fixing the beginning of the composition and the gaps between the cars;

- output to the screen of the image of the passing composition;

- recording to the hard disk of a compressed (compressed) video image from a television camera;

- storage of video images archive, limited by the capacity of the hard disk;

- view video archive;

- playback of the recorded video sequence at a given speed in the forward and reverse directions;

- frame-by-frame playback and freeze-frame mode.

The block for fixing the beginning and end of the car 10 can be implemented on the basis of a single-beam continuous laser rangefinder with a digital output, for example, BOSCH GLM 80. The television camera 11 can be implemented on a CCD matrix and equipped with a controller for identifying the inventory numbers of cars. The operation algorithm of such a controller can be implemented using the neural network method or the Viola-Jones method.

When realizing the purpose of the invention, the device operates as follows.

At the moment of passing the gap between the cars in front of the block for fixing the beginning and end of the car 10, a control signal is generated that resets the memory of the random access memory devices 6, 7, 8, starts the television camera 11 with the controller for reading the numbers of the cars, and also initiates the work of the calculator 5 with the next car. During the movement of the car, the wheel axles of its bogies sequentially run into strain sensors 1, 2, located in the intersleeper space of the weight-measuring rails. In controllers 3 and 4, the signal from deformation sensors 1, 2 is converted into a digital code containing information about the weight load from each wheel of the wagon axle. These values are reset to the first RAM 6. When the car moves when each wheel axle passes through the weight measuring rail, the process is repeated and information about the weight load from each wheel of the car bogies of this car is stored in RAM 6. At the end of the passage of the car, the block for fixing the beginning and end of the car 10 is activated, on the signal from which the information accumulated in the RAM 6 about the weight load of all the wheels of the car is reset to the calculator 5, which calculates the weight of the car.

With the launch of the television camera 11 with the controller for reading the numbers of cars, the process of identifying the number of the car begins. The inventory number of the car (side number) determined by the television camera 1 enters the calculator 5 and is tied to the calculated weight of the car.

At the beginning of the passage of the car, the process of determining the uneven load on the wheels of each wheel axle also begins. At the same time, information from controllers 3 and 4 enters RAM 7 and 8, respectively, from which it is dumped into subtraction unit 9, which calculates the difference in the load on the wheels of each axle and transfers it to calculator 5. The process is repeated for each wheel axle of the car. The counter 12 counts the cars in the intervals between them, the counter readings are reset to the calculator 5, in which they are tied to the side number of the car, its weight, and the differences in the loads on the wheels of the car. At the same time, these data are compared with the data on the car, transmitted by the information and computer system of the railway.

Thus, in the process of operation of this device, not only the wagon is weighed axially, but also the following is carried out:

- calculation of the total mass of the wagon with its binding to the identified wagon identification number;

- identification of a dangerous uneven load on the wheels of each axle, which in some cases can lead to a dangerous heel or even overturning of the car;

- linking a wagon with a certain weight and side number to its serial number in the train;

- comparison of the data obtained with the data generated in the computer system of the railway during the formation of the composition.

The combination of the listed properties of the device, in comparison with the prototype, significantly increases the information content of the results of its work and expands the functionality of automatic control of the commercial safety of goods on the railway.

Claims (1)

Automated weighing system for rolling stock, containing strain sensors installed on the rails in the intersleeper space, connected to the first and second controllers, respectively, and a computer, characterized in that there are three RAM blocks, a subtraction unit, a block for fixing the beginning and end of the car, a television camera with a built-in a controller for reading numbers of cars, as well as a counter, while the block for fixing the beginning and end of the car is connected to the control inputs of the RAM, the television camera, as well as the input of the counter and the calculator, the outputs of the first and second controllers through the first RAM, the outputs of the second and third RAM, also connected with the outputs of the first and second controllers, through the subtraction unit, and the outputs of the counter and the controller for reading the numbers of the cars of the TV camera are directly connected to the computer, which is also connected to the information and computer system of the railway.

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