CN112951023B - Train speed multiplication operation experimental method based on CTCS-3 level train control system - Google Patents
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Abstract
The invention relates to the simulation technical field of a CTCS-3 training simulation platform, and discloses a train speed multiplication running experiment method based on a CTCS-3 level train control system, which carries out simulation by setting a program running time and speed calculation formula, setting a program running period, calculating the time of a system and setting the difference of comparison time and calculating the displacement of a train, and under different speed multiplication, the train speed multiplication running experiment method based on the CTCS-3 level train control system sets the program running period of a speed calculation method and the program running time of a displacement calculation method, calculates the speed of the train and the displacement moving forwards in advance to achieve the aim of high-precision speed multiplication running, and realizes the rapid simulation of the whole-course running of a running route between two stations by adopting the method of running from 1 time to 20 times of high-precision speed multiplication, the running time of the running chart is shortened, the running chart is used for verification after a dispatcher adjusts the running chart, development is carried out in a framework of NET core3.1, and later maintenance and expansion are more convenient.
Description
Technical Field
The invention relates to the technical field of simulation of a CTCS-3 training simulation platform, in particular to a train speed multiplication operation experimental method based on a CTCS-3 level train control system.
Background
Along with the fact that the planning density of a highway network in China is higher and higher, the highway network is propelled one by one, and a large number of high-speed railway new lines are put into operation in recent years, the professional skill training work of first-line workers on railway sites is increasingly important. Because on-site vehicle-mounted equipment is limited by a plurality of factors such as safety and the like, the probability of principle teaching and operation exercise for students is low, and most high-speed rail operation companies use a high-speed rail train control simulation training system to train employees. The existing high-speed train control simulation training system is designed and developed according to the operation scene of a real railway system, the running speed and time of a train of the system are the same as those of a real train, and a dispatcher needs to wait for the time of the whole running process of the real train to verify the reasonability of the running chart when adjusting the running chart, so that more time is spent. Therefore, the invention provides a method for high-precision multiple-speed running of a CTCS-3 simulation training platform train, which can shorten the running time of the simulation platform train and save the time for verifying after a dispatcher adjusts a running chart.
The existing simulation platform simulates according to the real train running speed and time, and has the following defects: the simulation of the whole-course roadster and the long-distance roadster takes longer time, and when a dispatcher adjusts a running chart, the train needs to spend longer time running the whole course, so that more time is consumed; the method is developed on the basis of a NET Framework, and a new NET Framework version may not exist in the future; the multiple speed operation technique cannot achieve high accuracy.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a train double-speed running experimental method based on a CTCS-3-level train control system, which can realize the rapid simulation of the whole-course running of the running, long-distance running and running route between two stations, shorten the running time of a running chart and is used for the verification after a dispatcher adjusts the running chart; the method has the advantages of compatibility and more convenient later maintenance and expansion, and solves the problems in the background technology.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a train double-speed running experimental method based on a CTCS-3 level train control system, which comprises the following steps:
1) setting a program running time and speed calculation formula: the program running time is 400ms, and the speed of the train is calculated according to the following formula
CSpeedt＝CSpeedt-1+Acct*RuntimeCyc
Wherein, CSpeedtIndicating the train speed at time t, CSpeedt-1Indicating the train running speed at time t-1, AcctIndicates the acceleration, Acc, at time ttAccording to CSpeedtObtained from the dynamics model, RuntimeCyc represents the program run period.
2) Setting a program running period: the Runtimecyc represents a program running period, the current system time is acquired before the first running period starts and is represented as LastTime, and the contrast time is set as LastTime before the 1 st running period starts1
LastTime1＝LastTime+RuntimeCyc
3) Calculate the difference between the time and the setting of the system versus time: when the current system time acquired at the beginning of the first operation period is denoted as DateTimeNow _1, the current system time is acquired
Δd1＝DateTimeNow1-LastTime1
Wherein, Δ d1Represents the difference between the system time and the set contrast time at the beginning of the 1 st operating cycle, if Δ d1If less than the program run period, the 1 st run period is not started, if Δ d1If the running period is more than or equal to the program running period, starting the 1 st running period, and setting the contrast time before the 2 nd running period is started as LastTime2
LastTime2＝LastTime1+RuntimeCyc
4) Calculating the displacement of the train: the displacement calculation of the train is calculated according to the following formula:
displacet＝CSpeedt*RuntimeCyc
wherein, the displaytIndicating train displacement at time t, CSpeedtThe train running speed at time t is shown, and RuntimeCyc shows the program running period.
5) Run n cycles as 1), 2), 3), 4), and calculate displacement and velocity data for the nth cycle: acquiring the current system time as DateTimeNow at the beginning of the nth periodnThen, then
Δdn＝DateTimeNown-LastTimen
Wherein, Δ dnIndicating the difference between the system time and the set contrast time at the beginning of the nth operating cycle if Δ dnIf less than the program run period, the nth run period is not started, if Δ dnIf the program operation period is more than or equal to the program operation period, the nth operation period is started
Preferably, the speed of 1-20 times is selected for simulation, and the whole running process is set to be 40 km.
Preferably, the current system time acquired at the beginning of the 2 nd period is DateTimeNow2Then Δ d2＝DateTimeNow2-LastTime2Wherein, Δ d2Indicating system time and settings at the beginning of the 2 nd run cycleBy contrast with time, if Δ d2If less than the program run period, the 2 nd run period is not started, if Δ d2And if the running period is larger than or equal to the program running period, starting the 2 nd running period. And analogizing in turn, setting the contrast time before the start of the nth running period as LastTimenThe calculation formula is as follows: LastTimen＝LastTimen-1+RuntimeCyc。
Preferably, the program running period of the speed calculating method is set to be 400ms at normal speed under different double speeds; the program running period of the displacement calculation method is set to be 400ms at normal speed.
Preferably, the program development environment: visual Studio 2019, program development framework: NET core3.1, program execution environment: operating system-Windows 10 professional edition, processor-Intel (R) core (TM) i5-4590, memory-8 GB.
(III) advantageous effects
Compared with the prior art, the invention provides a train double-speed running experimental method based on a CTCS-3 level train control system, which has the following beneficial effects:
1. according to the train speed multiplying operation experimental method based on the CTCS-3-level train control system, under different speed multiplying conditions, the program operation period of the speed calculating method is set to be 400ms under the normal speed; the program running period of the displacement calculation method is set to be 400ms under the normal speed, the speed of the train and the displacement of forward movement are calculated in advance, the position of the train is displayed in advance, and the purpose of high-precision double-speed running is achieved.
2. The train speed-multiplying operation experimental method based on the CTCS-3-level train control system reduces the operation time of a train in a simulation platform by adopting a high-precision speed-multiplying operation method from 1 time to 20 times, realizes the rapid simulation of the whole-course operation of the traveling, long-distance traveling and operation route between two stations, shortens the operation time of an operation diagram, and is used for verification after a dispatcher adjusts the operation diagram.
Drawings
FIG. 1 is a line drawing of a train speed-multiplying running experimental method based on a CTCS-3 level train control system, which is provided by the invention, when the structure of the train speed-multiplying running experimental method reaches different positions at different speeds;
FIG. 2 is a normal speed-multiplying log printing chart of an experimental method for speed-multiplying operation of a train based on a CTCS-3 level train control system, provided by the invention;
FIG. 3 is a 10-speed log printing chart of an experimental method for the speed-doubled running of a train based on a CTCS-3 level train control system according to the present invention;
FIG. 4 is a 20-speed log printing chart of an experimental method for the speed-doubled running of a train based on a CTCS-3 level train control system according to the present invention;
FIG. 5 is a comparison graph of the test results of the train double-speed operation experimental method based on the CTCS-3 level train control system.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows: a train double-speed operation experimental method based on a CTCS-3 level train control system comprises the following steps:
step one, setting a program running time and speed calculation formula: the program run time was 400ms and the train speed calculation was calculated according to the following formula:
CSpeedt＝CSpeedt-1+Acct*RuntimeCyc
wherein, CSpeedtIndicating the train speed at time t, CSpeedt-1Indicating the train running speed at time t-1, AcctIndicates the acceleration, Acc, at time ttAccording to CSpeedtObtained from the dynamics model, RuntimeCyc represents the program run period.
Step two, setting programSequence operation period: the Runtimecyc represents a program running period, the current system time is acquired before the first running period starts and is represented as LastTime, and the contrast time is set as LastTime before the 1 st running period starts1
LastTime1＝LastTime+RuntimeCyc
Step three, calculating the time of the system and setting the difference of the comparison time: when the current system time acquired at the beginning of the first operation period is denoted as DateTimeNow _1, the current system time is acquired
LastTime1＝LastTime+RuntimeCyc
Wherein, Δ d1Represents the difference between the system time and the set contrast time at the beginning of the 1 st operating cycle, if Δ d1If less than the program run period, the 1 st run period is not started, if Δ d1If the running period is more than or equal to the program running period, starting the 1 st running period, and setting the contrast time before the 2 nd running period is started as LastTime2
LastTime2＝LastTime1+RuntimeCyc
Step four, calculating the displacement of the train: the displacement calculation of the train is calculated according to the following formula:
displacet＝CSpeedt*RuntimeCyc
wherein, the displaytIndicating train displacement at time t, CSpeedtThe train running speed at time t is shown, and RuntimeCyc shows the program running period.
Step five, operating n periods according to the steps one, two, three and four, and calculating displacement and speed data of the nth period: acquiring the current system time as DateTimeNow at the beginning of the nth periodnThen, then
LastTimen＝LastTimen-1+RuntimeCyc
Wherein, Δ dnIndicating the difference between the system time and the set contrast time at the beginning of the nth operating cycle if Δ dnIf less than the program run period, the nth run period is not started, if Δ dnIf the program operation period is more than or equal to the program operation period, the nth operation period is started。
And selecting a normal speed for simulation, and setting the whole running process to be 40 km.
Acquiring the current system time as DateTimeNow at the beginning of the 2 nd period2Then Δ d2＝DateTimeNow2-LastTime2Wherein, Δ d2Represents the difference between the system time and the set contrast time at the beginning of the 2 nd operating cycle, if Δ d2If less than the program run period, the 2 nd run period is not started, if Δ d2And if the running period is larger than or equal to the program running period, starting the 2 nd running period. And analogizing in turn, setting the contrast time before the start of the nth running period as LastTimenThe calculation formula is as follows: LastTimen＝LastTimen-1+RuntimeCyc。
Setting the program running period of the speed calculating method to be 400ms of the program running period at the normal speed under different double speeds; the program running period of the displacement calculation method is set to be 400ms at normal speed.
A program development environment: visual Studio 2019, program development framework: NET core3.1, program execution environment: operating system-Windows 10 professional edition, processor-Intel (R) core (TM) i5-4590, memory-8 GB.
Example two: a train double-speed operation experimental method based on a CTCS-3 level train control system comprises the following steps:
step one, setting a program running time and speed calculation formula: the program run time was 400ms and the train speed calculation was calculated according to the following formula:
CSpeedt＝CSpeedt-1+Acct*RuntimeCyc
wherein, CSpeedtIndicating the train speed at time t, CSpeedt-1Indicating the train running speed at time t-1, AcctIndicates the acceleration, Acc, at time ttAccording to CSpeedtObtained from the dynamics model, RuntimeCyc represents the program run period.
Step two, setting a program operation cycle: runtimecyc represents the program run cycle, before the first run cycle beginsAcquiring the current system time to represent the system time as LastTime, and setting the contrast time before the 1 st operation period starts to represent the system time as LastTime1
LastTime1＝LastTime+RuntimeCyc
Step three, calculating the time of the system and setting the difference of the comparison time: when the current system time acquired at the beginning of the first operation period is denoted as DateTimeNow _1, the current system time is acquired
LastTime1＝LastTime+RuntimeCyc
Wherein, Δ d1Represents the difference between the system time and the set contrast time at the beginning of the 1 st operating cycle, if Δ d1If less than the program run period, the 1 st run period is not started, if Δ d1If the running period is more than or equal to the program running period, starting the 1 st running period, and setting the contrast time before the 2 nd running period is started as LastTime2
LastTime2＝LastTime1+RuntimeCyc
Step four, calculating the displacement of the train: the displacement calculation of the train is calculated according to the following formula:
displacet＝CSpeedt*RuntimeCyc
wherein, the displaytIndicating train displacement at time t, CSpeedtThe train running speed at time t is shown, and RuntimeCyc shows the program running period.
Step five, operating n periods according to the steps one, two, three and four, and calculating displacement and speed data of the nth period: acquiring the current system time as DateTimeNow at the beginning of the nth periodnThen, then
LastTimen＝LastTimen-1+RuntimeCyc
Wherein, Δ dnIndicating the difference between the system time and the set contrast time at the beginning of the nth operating cycle if Δ dnIf less than the program run period, the nth run period is not started, if Δ dnAnd if the running period is larger than or equal to the program running period, starting the nth running period.
And 5 times of speed is selected for simulation, and the whole running process is set to be 40 km.
Acquiring the current system time as DateTimeNow at the beginning of the 2 nd operation period2Then Δ d2＝DateTimeNow2-LastTime2Wherein, Δ d2Represents the difference between the system time and the set contrast time at the beginning of the 2 nd operating cycle, if Δ d2If less than the program run period, the 2 nd run period is not started, if Δ d2And if the running period is larger than or equal to the program running period, starting the 2 nd running period. And analogizing in turn, setting the contrast time before the start of the nth running period as LastTimenThe calculation formula is as follows: LastTimen＝LastTimen-1+RuntimeCyc。
Setting the program running period of the speed calculating method to be 400ms of the program running period at the normal speed under different double speeds; the program running period of the displacement calculation method is set to be 400ms at normal speed.
A program development environment: visual Studio 2019, program development framework: NET core3.1, program execution environment: operating system-Windows 10 professional edition, processor-Intel (R) core (TM) i5-4590, memory-8 GB.
Example three: a train double-speed operation experimental method based on a CTCS-3 level train control system comprises the following steps:
step one, setting a program running time and speed calculation formula: the program run time was 400ms and the train speed calculation was calculated according to the following formula:
CSpeedt＝CSpeedt-1+Acct*RuntimeCyc
wherein, CSpeedtIndicating the train speed at time t, CSpeedt-1Indicating the train running speed at time t-1, AcctIndicates the acceleration, Acc, at time ttAccording to CSpeedtObtained from the dynamics model, RuntimeCyc represents the program run period.
Step two, setting a program operation cycle: the Runtimecyc represents a program running period, the current system time is acquired before the first running period starts and is represented as LastTime, and the Runtimecyc is set before the 1 st running period startsContrast time is LastTime1
LastTime1＝LastTime+RuntimeCyc
Step three, calculating the time of the system and setting the difference of the comparison time: when the current system time acquired at the beginning of the first operation period is denoted as DateTimeNow _1, the current system time is acquired
LastTime1＝LastTime+RuntimeCyc
Step four, calculating the displacement of the train: the displacement calculation of the train is calculated according to the following formula:
displacet＝CSpeedt*RuntimeCyc
wherein, the displaytIndicating train displacement at time t, CSpeedtThe train running speed at time t is shown, and RuntimeCyc shows the program running period.
Step five, operating n periods according to the steps one, two, three and four, and calculating displacement and speed data of the nth period: acquiring the current system time as DateTimeNow at the beginning of the nth periodnThen, then
LastTimen＝LastTimen-1+RuntimeCyc
Wherein, Δ dnIndicating the difference between the system time and the set contrast time at the beginning of the nth operating cycle if Δ dnIf less than the program run period, the nth run period is not started, if Δ dnAnd if the running period is larger than or equal to the program running period, starting the nth running period.
And selecting 20 times of speed for simulation, and setting the whole running process to be 40 km.
Acquiring the current system time as DateTimeNow at the beginning of the 2 nd operation period2Then Δ d2＝DateTimeNow2-LastTime2Wherein, Δ d2Represents the difference between the system time and the set contrast time at the beginning of the 2 nd operating cycle, if Δ d2If less than the program run period, the 2 nd run period is not started, if Δ d2And if the running period is larger than or equal to the program running period, starting the 2 nd running period. And analogizing in turn, setting the contrast time before the start of the nth running period as LastTimenMeter for measuringThe calculation formula is as follows: LastTimen＝LastTimen-1+RuntimeCyc。
Setting the program running period of the speed calculating method to be 400ms of the program running period at the normal speed under different double speeds; the program running period of the displacement calculation method is set to be 400ms at normal speed.
A program development environment: visual Studio 2019, program development framework: NET core3.1, program execution environment: operating system-Windows 10 professional edition, processor-Intel (R) core (TM) i5-4590, memory-8 GB.
And (4) judging the standard: the first embodiment, the second embodiment and the third embodiment can be used for obtaining that the running time of the simulation platform train can be shortened by applying a high-precision speed-multiplying running method, and the time for verifying after a dispatcher adjusts a running chart is saved.
The invention has the beneficial effects that: according to the train speed multiplying operation experimental method based on the CTCS-3-level train control system, under different speed multiplying conditions, the program operation period of the speed calculating method is set to be 400ms under the normal speed; the train speed-multiplying running experiment method based on the CTCS-3-level train control system reduces the running time of a train in a simulation platform by adopting a method of running at the high-precision speed-multiplying speed from 1 time to 20 times, realizes the rapid simulation of the whole-course running of a running vehicle, a long-distance running vehicle and a running route between two stations, shortens the running time of a running chart, is used for the verification after a dispatcher adjusts the running chart, is developed in a NET core3.1 frame, has compatibility with a NET version released in the future, and is more convenient for later maintenance and expansion.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A train double-speed operation experimental method based on a CTCS-3 level train control system comprises the following steps:
1) setting a program running time and speed calculation formula: the program run time was 400ms and the train speed calculation was calculated according to the following formula:
CSpeedt＝CSpeedt-1+Acct*RuntimeCyc
wherein, CSpeedtIndicating the train speed at time t, CSpeedt-1Indicating the train running speed at time t-1, AcctIndicates the acceleration, Acc, at time ttAccording to CSpeedtAcquiring from a dynamic model, wherein Runtimecyc represents a program running period;
2) setting a program running period: the Runtimecyc represents a program running period, the current system time is acquired before the first running period starts and is represented as LastTime, and the contrast time is set as LastTime before the 1 st running period starts1Then, then
LastTime1＝LastTime+RuntimeCyc
3) Calculate the difference between the time and the setting of the system versus time: the current system time acquired at the beginning of the first run cycle is denoted DateTimeNow1Then, then
Δd1＝DateTimeNow1-LastTime1
Wherein, Δ d1Represents the difference between the system time and the set contrast time at the beginning of the 1 st operating cycle, if Δ d1If less than the program run period, the 1 st run period is not started, if Δ d1If the running period is more than or equal to the program running period, starting the 1 st running period, and setting the contrast time before the 2 nd running period is started as LastTime2Then, then
LastTime2＝LastTime1+RuntimeCyc
4) Calculating the displacement of the train: the displacement calculation of the train is calculated according to the following formula:
displacet＝CSpeedt*RuntimeCyc
wherein, the displaytIndicating train displacement at time t, CSpeedtThe running speed of the train at the time t is represented, and RuntimeCyc represents the running period of the program;
5) run n cycles as 1), 2), 3), 4), and calculate displacement and velocity data for the nth cycle: acquiring the current system time as DateTimeNow at the beginning of the nth periodnThe contrast time before the start of the nth running period is LastTimenThen, then
Δdn＝DateTimeNown-LastTimen
Wherein, Δ dnIndicating the difference between the system time and the set contrast time at the beginning of the nth operating cycle if Δ dnIf less than the program run period, the nth run period is not started, if Δ dnAnd if the running period is larger than or equal to the program running period, starting the nth running period.
2. The train double-speed operation experimental method based on the CTCS-3 level train control system as claimed in claim 1, wherein: and selecting a multiple speed of 1-20 times for simulation, and setting the whole running process to be 40 km.
3. The train double-speed operation experimental method based on the CTCS-3 level train control system as claimed in claim 1, wherein: acquiring the current system time as DateTimeNow when the 2 nd operation period starts2Then Δ d2＝DateTimeNow2-LastTime2Wherein, Δ d2Represents the difference between the system time and the set contrast time at the beginning of the 2 nd operating cycle, if Δ d2If less than the program run period, the 2 nd run period is not started, if Δ d2If the running period is more than or equal to the program running period, starting the 2 nd running period, and so on, and setting the contrast time before the start of the nth running period as LastTimenThe calculation formula is as follows: LastTimen＝LastTimen-1+RuntimeCyc。
4. The train double-speed operation experimental method based on the CTCS-3 level train control system as claimed in claim 1, wherein: setting the program running period of the speed calculating method to be 400ms of the program running period at the normal speed under different double speeds; the program running period of the displacement calculation method is set to be 400ms at normal speed.
5. The train double-speed operation experimental method based on the CTCS-3 level train control system as claimed in claim 1, wherein: a program development environment: visual Studio 2019, program development framework: NET core3.1, program execution environment: operating system-Windows 10 professional edition, processor-Intel (R) core (TM) i5-4590, memory-8 GB.
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