CN109625041B - Method for remotely acquiring empty and heavy states of freight train - Google Patents
Method for remotely acquiring empty and heavy states of freight train Download PDFInfo
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- CN109625041B CN109625041B CN201910066002.3A CN201910066002A CN109625041B CN 109625041 B CN109625041 B CN 109625041B CN 201910066002 A CN201910066002 A CN 201910066002A CN 109625041 B CN109625041 B CN 109625041B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/40—Handling position reports or trackside vehicle data
Abstract
The invention aims to solve the problems that: a method for remotely acquiring the empty and heavy states of a freight train is provided, which comprises the following steps: collecting: continuously acquiring real-time data of the pressure of a train brake cylinder and the running state of the train through a sensor; and (3) transmission: returning the data acquired at the same time to the server; and (3) judging: judging whether the train is in a deceleration state or not according to the real-time data of the train running state; taking values: selecting a minimum value Pmin of the pressure of a train brake cylinder; and (3) calculating: and substituting the Pmin into a curve or a formula of the pressure of the train brake cylinder and the load change of the train to obtain the load state of the train. Has the advantages that: the method provided by the invention can remotely calculate the empty-weight state of the freight train, thereby effectively monitoring the load state of the train in real time and improving the driving safety. Has the advantages that: the method provided by the invention can remotely calculate the empty-weight state of the freight train, thereby effectively monitoring the load state of the train in real time and improving the driving safety.
Description
Technical Field
The invention relates to a technology for monitoring the running state of a train, in particular to a method for remotely acquiring the empty and heavy states of a freight train.
Background
The train braking device is used for realizing the deceleration or stop operation of a train and ensuring the driving safety. The train brake device consists of an air supply system and an automatic brake valve which are arranged on a locomotive, a brake machine and a basic brake device which are respectively arranged on the locomotive and a vehicle, and a brake pipe (also called a brake pipe) which penetrates through the whole train. The entire brake system is filled with compressed air. In the prior art, the braking action is generally electrically controlled, but the motive power of the braking action is still air pressure. The train brake cylinder pressure is influenced by various factors, but for a train with the same configuration, the minimum pressure generated by the brake cylinder during braking is linearly related to the load state of the train, and the data of the minimum pressure and the load state of the train can be obtained by one type, and the approximate value of the minimum pressure can be calculated by factory parameters.
In the prior art, various parameters of a train in operation are collected to assist in judging the operation state of the train. However, parameters such as the load state of the train are collected in real time without a method, the load state of the train can be reversely deduced only through the minimum pressure of the brake cylinder, and the minimum problem is how to judge that the pressure of the brake cylinder of the train reaches the minimum value.
Disclosure of Invention
The invention aims to solve the problems that: a method for remotely acquiring the empty-weight state of a freight train is provided.
The technical scheme of the invention is as follows: a method for remotely acquiring the empty and heavy states of a freight train comprises the following steps:
collecting: continuously acquiring real-time data of the pressure of a train brake cylinder and the running state of the train through a sensor;
and (3) transmission: returning the data acquired at the same time to a data server, and storing the data in a correlated manner;
and (3) judging: judging whether the train is in a deceleration state or not according to the real-time data of the train running state;
taking values: selecting the minimum value Pmin of the pressure of a train brake cylinder when the train is in a deceleration state until the train is static;
and (3) calculating: and substituting the minimum value Pmin of the train brake cylinder pressure into a train brake cylinder pressure and train load change curve or formula provided when the train leaves the factory to obtain the load state of the train.
Further, in the acquiring step, the acquired data are train brake cylinder pressure P and train position information A, and the time interval of acquiring the data each time is t.
And further, the position information A of the train is obtained through positioning modes such as a GPS or a Beidou.
Further, in the transmitting step, the collected data is transmitted back to the data server through the NBIOT or the 4G network.
Further, in the judging step, if the change Δ a in the displacement of the train in the following time interval is smaller than the change Δ a' in the displacement of the train in the preceding time interval within two consecutive time intervals t, it is judged that the train enters the deceleration state.
Still further, the displacement of the train is changed to a distance between the positions of the train at the beginning and the end of the time interval t.
Further, in the judging step, whether the train is in a continuous deceleration state is judged according to real-time data of the train running state. Data of a single deceleration state belongs to noise data, and what is needed in the scheme is data during continuous deceleration until a train stops.
Further, in the value taking step, the minimum value Pmin of the train brake cylinder pressure during the period when the train is in a continuous deceleration state until the train is static is selected.
Still further, the position information a of the train before and after the stationary finger at a time interval t is not changed.
The invention has the beneficial effects that: the method provided by the invention can remotely calculate the empty-weight state of the freight train, thereby effectively monitoring the load state of the train in real time and improving the driving safety.
Drawings
FIG. 1 is a schematic flow chart of an embodiment of the present invention
Detailed Description
The following detailed description of the embodiments of the present invention will be provided with reference to the accompanying drawings and examples, so that how to apply the technical means to solve the technical problems and achieve the corresponding technical effects can be fully understood and implemented. The embodiments and the features of the embodiments can be combined without conflict, and the technical solutions formed are all within the scope of the present invention.
Additionally, the steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
Examples
A sensor for detecting the pressure of a train brake cylinder and a GPS positioning device for detecting the running state of the train are arranged on a certain train, data are collected in real time and transmitted back to a data server of a command center through a 4G network, and the transmitted back data and the transmitted back time are recorded. And when the displacement calculated by the train passing through the GPS data in the later time interval is smaller than the displacement calculated by the train passing through the GPS data in the earlier time interval in the continuous data acquisition time interval, judging that the train starts to enter a deceleration state, and when the train enters the deceleration state, exhausting the train brake cylinder and reducing the pressure of the train brake cylinder. And selecting the minimum brake cylinder pressure Pmin in the time period from the deceleration period to the complete stop of the train, and bringing the minimum brake cylinder pressure Pmin into a train brake cylinder pressure and train load change curve or formula when the train leaves a factory to obtain the current load of the train.
In summary, the following steps:
a method for remotely acquiring the empty and heavy states of a freight train comprises the following steps:
collecting: continuously acquiring real-time data of the pressure of a train brake cylinder and the running state of the train through a sensor; the acquired data is the train brake cylinder pressure P acquired through a pressure sensor, and the position information A of the train is acquired through positioning modes such as GPS or Beidou, and the time interval of acquiring the data every time is t.
And (3) transmission: and returning the data collected at the same time to a data server through the NBIOT or 4G network, and storing the data in a correlated manner.
And (3) judging: judging whether the train is in a continuous deceleration state or not according to the real-time data of the train running state; and if the displacement change Delta A of the train in the later time interval is smaller than the displacement change Delta A' of the train in the previous time interval in the two continuous time intervals t, judging that the train enters a deceleration state. The displacement of the train is varied as the distance between the positions of the train at the beginning and the end of the time interval t.
Taking values: selecting the minimum value Pmin of the pressure of a train brake cylinder during the period when the train is in a continuous deceleration state until the train is static; the stationary means that the position information a of the train before and after a time interval t is not changed.
And (3) calculating: and substituting the minimum value Pmin of the train brake cylinder pressure into a train brake cylinder pressure and train load change curve or formula provided when the train leaves the factory to obtain the load state of the train.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks. These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A method for remotely acquiring the empty and heavy states of a freight train is characterized by comprising the following steps:
the collection step comprises: continuously acquiring real-time data of the pressure of a train brake cylinder and the running state of the train through a sensor;
a transmission step: transmitting the data and the time information acquired at the same time back to a data server of the command center, and storing the data and the time information in a correlation manner;
a judging step: judging whether the train is in a continuous deceleration state or not according to real-time data of the train running state;
a value taking step: selecting the minimum value Pmin of the pressure of a train brake cylinder during the period when the train is in a continuous deceleration state until the train is static;
a calculation step: the minimum value Pmin of the train brake cylinder pressure is brought into a train brake cylinder pressure and train load change curve or formula provided when the train leaves a factory, and the load state of the train is obtained;
in the acquisition step, the acquired data are train brake cylinder pressure P and train position information A, and the time interval of acquiring the data each time is t.
2. The method for remotely acquiring the empty and heavy states of the freight train according to claim 1, wherein: and the position information A of the train is obtained in a GPS or Beidou positioning mode.
3. The method for remotely acquiring the empty and heavy states of the freight train according to claim 1, wherein: in the transmission step, the collected data is transmitted back to the data server through the NBIOT or 4G network.
4. The method for remotely acquiring the empty and heavy states of the freight train according to claim 1, wherein: in the judging step, if the displacement change Delta A of the train in the later time interval is smaller than the displacement change Delta A' of the train in the previous time interval in two continuous time intervals t, the train is judged to enter a deceleration state.
5. The method of claim 4, wherein the method further comprises the steps of: the displacement of the train is a distance between the positions of the train at the beginning and the end of the time interval t.
6. The method for remotely acquiring the empty and heavy states of the freight train according to claim 1, wherein: the stationary means that the position information a of the train before and after a time interval t is not changed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910066002.3A CN109625041B (en) | 2019-01-24 | 2019-01-24 | Method for remotely acquiring empty and heavy states of freight train |
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| CN201910066002.3A CN109625041B (en) | 2019-01-24 | 2019-01-24 | Method for remotely acquiring empty and heavy states of freight train |
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| CN109625041B true CN109625041B (en) | 2022-04-05 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003063366A (en) * | 2001-08-30 | 2003-03-05 | Nabco Ltd | Electric variable load valve for rolling stock |
| EP2698545A2 (en) * | 2012-08-17 | 2014-02-19 | Hydac System GmbH | Device for controlling the charge state of at least one pressure accumulator |
| CN104742936A (en) * | 2015-04-16 | 2015-07-01 | 济南轨道交通装备有限责任公司 | Intelligent rail wagon |
| CN106254530A (en) * | 2016-09-21 | 2016-12-21 | 深圳市虹鹏能源科技有限责任公司 | A kind of tunnel radio networking and constructing tunnel and operation long distance control system |
| CN108082206A (en) * | 2017-12-20 | 2018-05-29 | 中车长春轨道客车股份有限公司 | A kind of train braking cylinder control pressurer system and track train |
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- 2019-01-24 CN CN201910066002.3A patent/CN109625041B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003063366A (en) * | 2001-08-30 | 2003-03-05 | Nabco Ltd | Electric variable load valve for rolling stock |
| EP2698545A2 (en) * | 2012-08-17 | 2014-02-19 | Hydac System GmbH | Device for controlling the charge state of at least one pressure accumulator |
| CN104742936A (en) * | 2015-04-16 | 2015-07-01 | 济南轨道交通装备有限责任公司 | Intelligent rail wagon |
| CN106254530A (en) * | 2016-09-21 | 2016-12-21 | 深圳市虹鹏能源科技有限责任公司 | A kind of tunnel radio networking and constructing tunnel and operation long distance control system |
| CN108082206A (en) * | 2017-12-20 | 2018-05-29 | 中车长春轨道客车股份有限公司 | A kind of train braking cylinder control pressurer system and track train |
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| CN109625041A (en) | 2019-04-16 |
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