CN112597635B - Method, device and equipment for generating a virtual clock system based on a CBTC simulation system - Google Patents
Method, device and equipment for generating a virtual clock system based on a CBTC simulation system Download PDFInfo
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Abstract
The application relates to a method, a device and equipment for generating a virtual clock system based on a CBTC simulation system, which belong to the technical field of clocks; the method comprises the steps of calculating a first time difference value according to target simulation time and local time, obtaining 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 a first time interval, judging whether the difference between the second time difference value and the first time difference value is smaller than a difference value threshold value, wherein the difference value threshold value is larger than the first time interval, and updating the first time difference value if the second time difference value is larger than the difference value threshold value. By using the method provided by the application, the time starting point of the student to be simulated in the practical training can be set, the current time of the computer does not need to be modified, and the method is convenient and quick, so that the simulation time and the local time can be automatically matched, and the practical training is more convenient.
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 simulation system.
Background
CBTC (Communication Based Train Control System, communication-based train automation control system) is a communication technology-based train operation control system that has been developed with rapid progress of communication technologies, particularly radio technologies. In order to enable students to better understand the CBTC system, understand the workflow and principle thereof, improve the ability of the students to quickly integrate into the working environment after graduation, and generally require the students to learn in the real scene. However, due to the limitation of the conditions of the real scene, the students cannot be made to be in the scene of the cognitive system, and the running process of the whole system cannot be comprehensively observed, so that a CBTC simulation system is usually established in a school.
The CBTC simulation system further comprises an ATP (Automatic Train Protection ) simulation system, an ATO (Automatic Train Operation ) simulation system, an ATS (Automatic Train Supervision, automatic train monitoring) simulation system and an operation diagram simulation system, the train is put in and put out of the warehouse, the plan and management simulation system is matched with the scene of the whole line of the real urban subway built by the 3D virtual simulation technology, and a simulation system with the real system function of 1:1 reduction is built, and all the systems complement each other and are linked with each other.
But each time period may be different due to the specificity of subway operation. When students carry out practical training, the time for starting the practical training is not fixed, and the simulation time is not fixed in each practical training scene, so that the running diagram is required to be recompiled each time to match with the current computer to finish the matching of train departure and the running diagram, or the computer time is modified to meet the requirement of the simulation time, the operation process is complex, and the convenience is poor.
Disclosure of Invention
In order to at least solve 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 simulation system, so as to realize automatic matching of simulation time and local time, thereby enabling practical training to be more convenient.
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 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, wherein the difference threshold value is larger than the first time interval;
And if the difference between the second time difference value and the first time difference value is larger than a difference threshold value, updating the first time difference value.
Optionally, the calculating the second time difference based on the calculation formula and the first time interval includes:
calculating the second time difference value at intervals of the first time interval;
the second time difference value is a difference value between the local time and the last simulation time.
Optionally, the method further comprises:
based on the current date and the simulation time, a complete simulation date is determined.
Optionally, the updating the first time difference value includes:
the method comprises the steps of obtaining current local time and current virtual time, 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, if the second time difference is smaller than the difference threshold, the last simulation time is equal to the simulation time.
In still another aspect, the device for generating the virtual clock system based on the CBTC simulation system comprises an acquisition module, a first calculation module, a determination module, a second calculation module, a judgment module and an update 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 obtaining 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 or not, wherein the difference threshold value is larger than the first time interval;
The updating module is configured to update the first time difference value when a difference between the second time difference value and the first time difference value is greater than a difference threshold.
Optionally, the second calculating module is configured to calculate the second time difference at intervals of the first time interval, where the second time difference is a difference between the local time and the last simulation time.
Optionally, the updating module is configured to obtain a current local time and a current virtual time, calculate a new first time difference value according to the current local time and the current virtual time, and update 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 a difference threshold.
In yet another aspect, a device for generating a virtual clock system based on a CBTC emulation system includes a processor and a memory coupled to the processor;
The memory is used for storing a computer program at least for executing the method for generating the virtual clock system based on the CBTC simulation system;
The processor is configured to invoke and execute the computer program in the memory.
The beneficial effects of the invention are as follows:
the method, the device and the equipment for generating the virtual clock system based on the CBTC simulation system are used for obtaining target simulation time and local time, calculating a first time difference value according to the target simulation time and the local time, obtaining 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 value threshold value, wherein the difference value threshold value is larger than the first time interval, and updating the first time difference value if the difference between the second time difference value and the first time difference value is larger than the difference value threshold value. The method comprises the steps of calculating the simulation time by using a computer time subtracting difference value, so that the technical problem of time calculation errors caused by unstable intervals during manual time calculation is solved, and the automatic recovery thought of the simulation time is used for avoiding system abnormality caused by simulated time jump caused by manual system time modification in the running process of software. The system can set the time starting point to be simulated by the practical training of the students, 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 invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a 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;
fig. 2 is a schematic structural diagram of a generating device of a virtual clock system based on a CBTC simulation system according to an embodiment of the present invention;
Fig. 3 is a schematic structural diagram of a generating 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 will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
In order to at least solve the technical problems set forth 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 flowchart 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 provided by the embodiment of the present invention may include the following steps:
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 the clock system is generated based on the target simulation system by using the method for generating the virtual clock system based on the CBTC simulation system, so that practical training of students is facilitated.
For example, a time point where simulation is required, i.e., a target simulation time, which is 8:00 a.m., may be set by an administrator of a teacher, a class, 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 am. It should be noted that the target simulation time and the local time are only listed here, and are not limitative, and in this embodiment, for the purpose of describing the solution, the whole solution is described by taking the listed 8:00 am and 10:00 am as examples.
After the training starts, the local time changes and the simulation time also changes.
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 solution, after the system is started, the local time acquired is L. The first time difference s=local time L-target simulation time. In this embodiment, the first time difference s=10:00 am-8:00 am=2 hours, and the unit of the difference S may be set to be milliseconds for ease of calculation.
S13, acquiring 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=the current local time l—the first time difference S is obtained.
In some embodiments, optionally, further comprising determining a complete simulation date based on the current date and the simulation time.
For example, after the simulation time is obtained, the current date is added to obtain a complete simulated date+time.
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 based on the calculation formula and the first time interval includes calculating the second time difference at the first time interval, wherein the second time difference is a difference between the local time and the last simulation time.
After the simulation time calculation formula is obtained, judging whether the system is closed, if not, starting a single thread, and calculating a second time difference value S1 every first time interval. For example, the first time interval may be 10 milliseconds, with a new difference value, the second time difference value S1, being calculated every 10 milliseconds. Wherein the second time difference s1=the current local time L-the last simulation time O. Wherein, the most initial last simulation time 0=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 value threshold value, wherein the difference value threshold value is larger than the first time interval.
After the second time difference value S1 is calculated, the difference between the second time difference value S1 and the first time difference value S is calculated, and the difference between the second time difference value S1 and the first time difference value S is compared with the difference threshold. For example, in the present embodiment, the difference threshold may be set to 100 ms, and the system calculates the second time difference S1 once every 10 ms, and determines whether the errors of S1 and S are within 100 ms.
S16, if the difference between the second time difference value and the first time difference value is larger than the difference value threshold value, updating the first time difference value.
In some embodiments, optionally, updating the first time difference value includes obtaining a current local time and a current virtual time, calculating a new first time difference value based on the current local time and the current virtual time, and updating a calculation formula based on the new first time difference value.
For example, if the errors of S1 and S exceed 100 ms, it is indicated that the computer time may be manually modified, so as not to affect the stability of the running system, and avoid the situation of time crossing, the logic performs automatic repair calculation, calculates a new difference value according to the current simulation time again, replaces the first time difference value S used before, and ensures that the simulation time does not jump along with the modification of the calculation current time.
The method for generating the virtual clock system based on the CBTC simulation system comprises the steps of obtaining target simulation time and local time, calculating a first time difference value according to the target simulation time and the local time, obtaining 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 a first time interval, judging whether the difference between the second time difference value and the first time difference value is smaller than a difference value threshold value, wherein the difference value is larger than the first time interval, and updating the first time difference value if the difference between the second time difference value and the first time difference value is larger than the difference value threshold value. The method comprises the steps of calculating the simulation time by using a computer time subtracting difference value, so that the technical problem of time calculation errors caused by unstable intervals during manual time calculation is solved, and the automatic recovery thought of the simulation time is used for avoiding system abnormality caused by simulated time jump caused by manual system time modification in the running process of software.
Based on a general inventive concept, the embodiment of the invention also provides a device for generating the virtual clock system based on the CBTC simulation system.
Fig. 2 is a schematic structural diagram of a generating device of a virtual clock system based on a CBTC simulation system according to an embodiment of the present invention, referring to fig. 2, the device provided in the embodiment of the present invention may include an obtaining module 21, a first calculating module 22, a determining module 23, a second calculating module 24, a judging module 25, and an updating module 26;
an acquisition module 21 for acquiring a target simulation time and a local time;
A first calculation module 22, configured to calculate a first time difference value according to the target simulation time and the local time;
a determining module 23, configured to obtain a calculation formula of the simulation time according to the first time difference value;
A second calculation module 24 for calculating a second time difference based on the calculation formula and the first time interval;
a judging module 25, configured to judge whether the difference between the second time difference and the first time difference is smaller than a difference threshold, where the difference threshold is greater than the first time interval;
The updating module 26 is configured to update the first time difference value when the difference between the second time difference value and the first time difference value is greater than the difference threshold.
In some embodiments, the second calculating module is configured to calculate a second time difference value at intervals of the first time interval, where the second time difference value is a difference value between the local time and the last simulation time.
In some embodiments, the method comprises the steps of obtaining a current local time and a current virtual time, calculating a new first time difference value according to the current local time and the current virtual time, and updating a 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 less than the difference threshold.
The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.
The device for generating the virtual clock system based on the CBTC simulation system comprises a device for obtaining target simulation time and local time, calculating a first time difference value according to the target simulation time and the local time, obtaining 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 a first time interval, judging whether the difference between the second time difference value and the first time difference value is smaller than a difference value threshold value, wherein the difference value is larger than the first time interval, and updating the first time difference value if the difference between the second time difference value and the first time difference value is larger than the difference value threshold value. The method comprises the steps of calculating the simulation time by using a computer time subtracting difference value, so that the technical problem of time calculation errors caused by unstable intervals during manual time calculation is solved, and the automatic recovery thought of the simulation time is used for avoiding system abnormality caused by simulated time jump caused by manual system time modification in the running process of software.
Based on a general inventive concept, the embodiment of the invention also provides a device for generating a virtual clock system based on the CBTC simulation system.
Fig. 3 is a schematic diagram of a generating device of a virtual clock system based on a CBTC simulation system according to an embodiment of the present invention, referring to fig. 3, the generating device of 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 at least for the method for generating a virtual clock system based on the CBTC simulation system according to any one of the above embodiments;
the processor 31 is used to call and execute the computer program in memory.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to.
It should be noted that in the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "plurality" means at least two.
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 further 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 is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of techniques known in the art, discrete logic circuits with logic gates for implementing logic functions on data signals, application specific integrated circuits with appropriate combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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 present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
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| CN106033376B (en) * | 2015-03-20 | 2019-11-15 | 深圳市航电技术研究院 | Clock transition fault-tolerance processing method and device |
| CN105260227B (en) * | 2015-09-29 | 2019-04-26 | 联想(北京)有限公司 | A kind of data correcting method and electronic equipment |
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| CN109586691B (en) * | 2018-11-19 | 2022-12-30 | 珠海市杰理科技股份有限公司 | Clock calibration method, device, system, storage medium and computer equipment |
| CN110620632B (en) * | 2019-09-12 | 2021-02-23 | 华为技术有限公司 | A time synchronization method and device |
| CN110928197B (en) * | 2019-11-28 | 2021-08-17 | 西门子交通技术(北京)有限公司 | Simulation test method and system for automatic control of train |
| CN111813507B (en) * | 2020-07-22 | 2023-05-02 | 超越科技股份有限公司 | Method, system, equipment and medium for high availability of virtual machine based on sanlock |
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