CN112597635A - Method, device and equipment for generating virtual clock system based on CBTC (communication based train control) simulation system - Google Patents
Method, device and equipment for generating virtual clock system based on CBTC (communication based train control) simulation system Download PDFInfo
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Abstract
The invention relates to a method, a device and equipment for generating a virtual clock system based on a CBTC (communication based train control) simulation system, belonging to the technical field of clocks, wherein the method, the device and the equipment are used for simulating time and local time by acquiring a target; calculating a first time difference value according to the target simulation time and the local time; acquiring a calculation formula of the simulation time according to the first time difference value; calculating a second time difference value based on the calculation formula and the first time interval; judging whether the difference between the second time difference value and the first time difference value is smaller than a difference threshold value or not; the difference threshold is greater than the first time interval; and if the second time difference value is larger than the difference threshold value, updating the first time difference value. By using the method provided by the application, the time starting point to be simulated by the practical training of the student can be set, the current time of the computer does not need to be modified, the method is convenient and quick, the simulation time is automatically matched with the local time, and the practical training is more convenient and faster.
Description
Technical Field
The invention belongs to the technical field of clocks, and particularly relates to a method, a device and equipment for generating a virtual clock system based on a CBTC (communication based train control) simulation system.
Background
The CBTC (Communication Based Train Control System) is a Communication technology-Based Train operation Control System that has been developed with the rapid development of Communication technologies, particularly radio technologies. In order to enable students to better understand the CBTC system, understand the workflow and principle of the CBTC system and improve the ability of the students to quickly blend into the working environment after graduation, the students are generally required to learn in a real scene. However, due to the limitation of the conditions of the real scene, the students cannot be personally on the cognitive system, and the whole system operation process cannot be comprehensively observed, so a CBTC simulation system is usually set up in schools.
The CBTC simulation system also comprises an ATP (Automatic Train Protection) simulation system, an ATO (Automatic Train Operation) simulation system, an ATS (Automatic Train Supervision) simulation system, a running chart simulation system, a Train warehouse-in and warehouse-out plan management simulation system, a scene of a real urban subway whole line constructed by matching a 3D virtual simulation technology, a set of simulation systems restored by the real system function 1:1 are built, and all the systems supplement each other and are linked with each other.
However, due to the particularity of subway operation, there are different situations in each time slot. When students carry out practical training, the time for starting the practical training is not fixed, and the simulation time required by each practical training scene is also not fixed, so that the running chart needs to be recompiled to match the current computer to finish train departure and matching of the running chart every time, or the computer time is modified to meet the requirement of the simulation time, and the operation process is complicated and the convenience is poor.
Disclosure of Invention
In order to solve at least the problems in the prior art, the invention provides a method, a device and equipment for generating a virtual clock system based on a CBTC (communication based train control) simulation system, so as to realize automatic matching of simulation time and local time, and further enable the practical training to be more convenient and faster.
The technical scheme provided by the invention is as follows:
in one aspect, a method for generating a virtual clock system based on a CBTC simulation system includes:
acquiring target simulation time and local time;
calculating a first time difference value according to the target simulation time and the local time;
acquiring a calculation formula of simulation time according to the first time difference value;
calculating a second time difference value based on the calculation formula and the first time interval;
judging whether the difference between the second time difference value and the first time difference value is smaller than a difference threshold value or not; the difference threshold is greater than the first time interval;
and if the second time difference value is larger than a difference threshold value, updating the first time difference value.
Optionally, the calculating a second time difference value based on the calculation formula and the first time interval includes:
calculating the second time difference value at intervals of the first time interval;
and the second time difference value is the difference value between the local time and the last simulation time.
Optionally, the method further includes:
based on the current date and the simulation time, a full simulation date is determined.
Optionally, the updating the first time difference value includes:
acquiring current local time and current virtual time, and calculating a new first time difference value according to the current local time and the current virtual time; and updating the calculation formula according to the new first time difference value.
Optionally, the method further includes: and if the second time difference is smaller than the difference threshold, the last simulation time is equal to the simulation time.
In another aspect, a device for generating a virtual clock system based on a CBTC emulation system includes: the device comprises an acquisition module, a first calculation module, a determination module, a second calculation module, a judgment module and an updating module;
the acquisition module is used for acquiring target simulation time and local time;
the first calculation module is used for calculating a first time difference value according to the target simulation time and the local time;
the determining module is used for acquiring a calculation formula of the simulation time according to the first time difference value;
the second calculation module is used for calculating a second time difference value based on the calculation formula and the first time interval;
the judging module is used for judging whether the difference between the second time difference value and the first time difference value is smaller than a difference threshold value; the difference threshold is greater than the first time interval;
the updating module is configured to update the first time difference value when the second time difference value is greater than a difference threshold value.
Optionally, the second calculating module is configured to calculate the second time difference value by separating the first time interval; and the second time difference value is the difference value between the local time and the last simulation time.
Optionally, the update module is configured to obtain a current local time and a current virtual time, and calculate a new first time difference value according to the current local time and the current virtual time; and updating the calculation formula according to the new first time difference value.
Optionally, the updating module is further configured to determine that the last simulation time is equal to the simulation time when the second time difference is smaller than the difference threshold.
In still another aspect, a generating apparatus of a virtual clock system based on a CBTC emulation system includes: a processor, and a memory coupled to the processor;
the memory is configured to store a computer program at least for executing the method for generating a virtual clock system based on a CBTC simulation system according to any of the above items;
the processor is used for calling and executing the computer program in the memory.
The invention has the beneficial effects that:
according to the method, the device and the equipment for generating the virtual clock system based on the CBTC simulation system, provided by the embodiment of the invention, target simulation time and local time are obtained; calculating a first time difference value according to the target simulation time and the local time; acquiring a calculation formula of the simulation time according to the first time difference value; calculating a second time difference value based on the calculation formula and the first time interval; judging whether the difference between the second time difference value and the first time difference value is smaller than a difference threshold value or not; the difference threshold is greater than the first time interval; and if the second time difference value is larger than the difference threshold value, updating the first time difference value. The method comprises the following steps of calculating the simulation time by subtracting a difference value from the time of a computer, so that the technical problem of time calculation errors caused by unstable intervals during manual time calculation is solved; the automatic restoration idea of the simulation time avoids system abnormity caused by simulation time jump caused by artificially modifying the system time in the running process of software. The system can set the time starting point to be simulated by the student in the practical training, does not need to modify the current time of the computer, and is convenient and quick.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flowchart of a method for generating a virtual clock system based on a CBTC simulation system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a virtual clock system generation apparatus based on a CBTC simulation system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a generation device of a virtual clock system based on a CBTC simulation system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
In order to at least solve the technical problem proposed in the present invention, an embodiment of the present invention provides a method for generating a virtual clock system based on a CBTC simulation system.
Fig. 1 is a schematic flow chart of a method for generating a virtual clock system based on a CBTC simulation system according to an embodiment of the present invention, referring to fig. 1, the method according to the embodiment of the present invention may include the following steps:
and S11, acquiring target simulation time and local time.
In a specific implementation process, a CBTC simulation system of any school can be defined as a target simulation system, and then, based on the target simulation system, a clock system is generated by using the method for generating a virtual clock system based on the CBTC simulation system, so that the training of students is facilitated.
For example, a time point at which simulation is required, that is, a target simulation time, for example, 8:00 a.m., may be set by an administrator such as a teacher, a shift, or the like. The clock system is started, and the system acquires the target simulation time and the current time of the local computer, namely the local time, for example, the local time is 10:00 a.m. It should be noted that, the target simulation time and the local time are only listed and not limited, and in the present embodiment, for the purpose of describing the scheme, the whole scheme is described by taking the listed examples of 8:00 am and 10:00 am as examples.
After the training begins, the local time changes, and the simulation time also changes.
And S12, calculating a first time difference value according to the target simulation time and the local time.
For example, for a clear and convenient description of the scheme, the local time obtained after the system is started is counted as L. The first time difference S is the local time L-the target simulation time. In the present embodiment, the first time difference S is 10:00 am to 8:00 am, which is 2 hours, and the unit of the difference S may be set to milliseconds for convenience of calculation.
And S13, obtaining a calculation formula of the simulation time according to the first time difference value.
For example, after the first time difference S is obtained, a calculation formula of the simulation time, that is, the simulation time C is the current local time L — the first time difference S.
In some embodiments, optionally, the method further includes: based on the current date and the simulation time, a full simulation date is determined.
For example, after the simulation time is obtained, a complete simulation date + time is obtained by adding the current date.
And S14, calculating a second time difference value based on the calculation formula and the first time interval.
In some embodiments, optionally, calculating the second time difference value based on the calculation formula and the first time interval comprises: calculating a second time difference value at intervals of a first time interval; the second time difference is the difference between the local time and the last simulation time.
After the simulation time calculation formula is obtained, whether the system is closed or not is judged, if not, a single thread can be started, and a second time difference value S1 is calculated every first time interval. For example, the first time interval may be 10 milliseconds, and a new difference, i.e., the second time difference S1, is calculated every 10 milliseconds. The second time difference S1 is the current local time L — the last simulation time O. The last simulation time 0 from the beginning is the simulation time C.
S15, judging whether the difference between the second time difference value and the first time difference value is smaller than a difference threshold value; the difference threshold is greater than the first time interval.
After the second time difference S1 is calculated, the difference between the second time difference S1 and the first time difference S is calculated, and the difference between the second time difference S1 and the first time difference S is compared with the difference threshold. For example, in the present embodiment, the difference threshold may be set to 100 milliseconds, and every 10 milliseconds, the system calculates the second time difference S1 once, and determines whether the error of S1 and S is within 100 milliseconds.
And S16, if the second time difference value is larger than the difference threshold value, updating the first time difference value.
In some embodiments, optionally, updating the first time difference value includes: acquiring current local time and current virtual time, and calculating a new first time difference value according to the current local time and the current virtual time; and updating the calculation formula according to the new first time difference value.
For example, if the error of S1 and S exceeds 100 ms, it indicates that the computer time may be modified manually, and in order not to affect the stability of the running system and avoid the situation of time crossing, the logic performs an automatic repair calculation, and calculates a new difference value again according to the current simulation time, replacing the previously used first time difference value S, and ensuring that the simulation time does not jump along with the modification of the current time.
According to the method for generating the virtual clock system based on the CBTC simulation system, provided by the embodiment of the invention, target simulation time and local time are obtained; calculating a first time difference value according to the target simulation time and the local time; acquiring a calculation formula of the simulation time according to the first time difference value; calculating a second time difference value based on the calculation formula and the first time interval; judging whether the difference between the second time difference value and the first time difference value is smaller than a difference threshold value or not; the difference threshold is greater than the first time interval; and if the second time difference value is larger than the difference threshold value, updating the first time difference value. The method comprises the following steps of calculating the simulation time by subtracting a difference value from the time of a computer, so that the technical problem of time calculation errors caused by unstable intervals during manual time calculation is solved; the automatic restoration idea of the simulation time avoids system abnormity caused by simulation time jump caused by artificially modifying the system time in the running process of software.
Based on a general inventive concept, the embodiment of the present invention further provides a device for generating a virtual clock system based on a CBTC simulation system.
Fig. 2 is a schematic structural diagram of a device for generating a virtual clock system based on a CBTC simulation system according to an embodiment of the present invention, referring to fig. 2, the device according to the embodiment of the present invention may include the following structures: the device comprises an acquisition module 21, a first calculation module 22, a determination module 23, a second calculation module 24, a judgment module 25 and an update module 26;
an obtaining module 21, configured to obtain target simulation time and local time;
a first calculating module 22, configured to calculate a first time difference value according to the target simulation time and the local time;
the determining module 23 is configured to obtain a calculation formula of the simulation time according to the first time difference;
a second calculating module 24, configured to calculate a second time difference value based on the calculation formula and the first time interval;
a judging module 25, configured to judge whether a difference between the second time difference value and the first time difference value is smaller than a difference threshold; the difference threshold is greater than the first time interval;
and an updating module 26, configured to update the first time difference value when the second time difference value is greater than the difference threshold value.
In some embodiments, optionally, the second calculating module is configured to calculate a second time difference value at intervals of the first time interval; the second time difference is the difference between the local time and the last simulation time.
In some embodiments, optionally, the updating module is configured to obtain a current local time and a current virtual time, and calculate a new first time difference value according to the current local time and the current virtual time; and updating the calculation formula according to the new first time difference value.
In some embodiments, optionally, the updating module is further configured to determine that the last simulation time is equal to the simulation time when the second time difference is smaller than the difference threshold.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
The device for generating the virtual clock system based on the CBTC simulation system, provided by the embodiment of the invention, is used for simulating the time and the local time by acquiring the target; calculating a first time difference value according to the target simulation time and the local time; acquiring a calculation formula of the simulation time according to the first time difference value; calculating a second time difference value based on the calculation formula and the first time interval; judging whether the difference between the second time difference value and the first time difference value is smaller than a difference threshold value or not; the difference threshold is greater than the first time interval; and if the second time difference value is larger than the difference threshold value, updating the first time difference value. The method comprises the following steps of calculating the simulation time by subtracting a difference value from the time of a computer, so that the technical problem of time calculation errors caused by unstable intervals during manual time calculation is solved; the automatic restoration idea of the simulation time avoids system abnormity caused by simulation time jump caused by artificially modifying the system time in the running process of software.
Based on a general inventive concept, the embodiment of the present invention further provides a device for generating a virtual clock system based on a CBTC simulation system.
Fig. 3 is a schematic structural diagram of a device for generating a virtual clock system based on a CBTC simulation system according to an embodiment of the present invention, and referring to fig. 3, the device for generating a virtual clock system based on a CBTC simulation system according to an embodiment of the present invention includes: a processor 31, and a memory 32 connected to the processor.
The memory 32 is used for storing a computer program, and the computer program is at least used for the method for generating the virtual clock system based on the CBTC simulation system according to any of the above embodiments;
the processor 31 is used to invoke and execute the computer program in the memory.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that the terms "first," "second," and the like in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
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