CN112198867A - Train control system software simulation test method - Google Patents
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- CN112198867A CN112198867A CN202011066369.4A CN202011066369A CN112198867A CN 112198867 A CN112198867 A CN 112198867A CN 202011066369 A CN202011066369 A CN 202011066369A CN 112198867 A CN112198867 A CN 112198867A
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
- G05B23/0221—Preprocessing measurements, e.g. data collection rate adjustment; Standardization of measurements; Time series or signal analysis, e.g. frequency analysis or wavelets; Trustworthiness of measurements; Indexes therefor; Measurements using easily measured parameters to estimate parameters difficult to measure; Virtual sensor creation; De-noising; Sensor fusion; Unconventional preprocessing inherently present in specific fault detection methods like PCA-based methods
Abstract
The invention discloses a train control system software simulation test method, which simulates the hardware function and the service logic in a given train control system to realize the software simulation of the train running process under the train control system and generate a test case to finish the test of a simulation system; firstly, analyzing a selected train control system to obtain a functional hardware list and service logic information; then, designing a software simulation system to simulate hardware functions and service logic information; and finally, designing a test system, and generating a group of train operation data for testing the software simulation system to obtain a final train control system software simulation test system. The invention can achieve the purpose of carrying out example verification on the intelligent network configuration software which can grow through a deeper secondary development and different test sequence generation methods.
Description
Technical Field
The invention relates to a software simulation test method, in particular to a software simulation test method for a train control system.
Background
The system simulation technology is a comprehensive train control technology which is based on the professional technologies in the fields of similar theory, control theory, computer technology, information technology and application thereof, takes a computer and various physical effect devices as tools and utilizes a system model to carry out dynamic experimental research on an actual or assumed system. The system is a research object, the model is the abstraction of the system, and the simulation is to perform the experiment on the model so as to achieve the purpose of researching the system.
The system emulation is a practical and effective system analysis and research method, and has the following characteristics:
(1) the cost is low, and the human body and the property cannot be damaged;
(2) various destructive tests can be simulated;
(3) the inherent discrete characteristic and dynamic randomness of train operation are easily processed;
(4) the running process can be replayed to analyze the performance of the system.
The traditional simulation software and the test case are separated from each other, extra time and labor cost are needed for generating the test case, and the situation that the test case cannot be completely covered can also occur when the test case is generated manually.
Disclosure of Invention
The invention aims to provide a train control system software simulation test method, which takes a train control system as a scene and carries out example verification on intelligent internetware capable of being grown.
The technical solution for realizing the purpose of the invention is as follows: a train control system software simulation test method abstracts and simplifies the hardware and the function of a given train control system or a certain type of train control system, designs a simulation test system which is consistent with the abstract and the simplified hardware and the function, and comprises the following concrete steps:
step 2, according to abstracted hardware function information and business logic, realizing hardware function and business logic flow through software simulation, and designing a software simulation system, wherein the software simulation system consists of a simulation function module, a simulation data module and a display interface module;
and 3, designing a test case generator of the train control system according to the abstract business process logic, selecting key nodes to be tested, acquiring a group of train operation information completely covering the related node information, storing the train operation information in a simulation data module, and using the train operation information as a test case of a simulation system of the train control system.
Further, in step 1, a functional hardware list including track information and a transponder in the target train control system needs to be extracted, and a core service logic of the train control system including train collision protection and computer interlocking is abstracted by using a logic language.
Further, in step 2, the simulation function module consists of a trackside information simulation module and a train simulation module, and the simulation function module is used for simulating the functions of all components of the train control system; the trackside information simulation module comprises a trackside circuit simulation module, a trackside circuit information processing module, a transponder simulation module and a transponder information processing module; the train simulation module comprises a train automatic operation module and a train automatic protection module.
Further, the specific functions of each basic module in the simulation functional module are as follows:
the trackside circuit simulation module is used for sending a tracking code sequence or a track circuit code sequence required by special route access according to the section where the train runs and station route access information and providing response information for calculating an overspeed protection curve for the automatic train protection module;
the trackside circuit information processing module is used for processing the acquired circuit information according to a relevant protocol of a track circuit of the train control system so as to facilitate transmission;
the responder simulation module simulates the trigger of the responder at the starting and stopping positions of the train track interval according to the running distance of the train, and sends the responder message in real time to provide various line data for calculating an overspeed protection curve for the train automatic protection module;
the responder message processing module decodes the responder message information received by the simulated vehicle-mounted equipment in the train according to a responder message related protocol in a train control system responder principle; the transponder message information comprises the line data in front of the train, including transponder link information, track interval information, static line speed limit, temporary speed limit and phase separation zone information;
the train automatic operation module is used for realizing the running mode switching function of the train and various manual operation functions in the running process of the train;
and the train automatic protection module is used for respectively calculating the maximum running speed allowed by the train under the mobile block and the fixed block in real time under different modes according to the line speed limit information, the track section information and the position information of the train, and monitoring the running state of the train.
Further, in step 2, the simulation data module is composed of a simulation line database, data processing and data communication; its function is to store, transmit and process basic data information;
the simulation circuit database is used for storing circuit data required by the operation of the train control system simulation system, and comprises train operation diagram information, route information, circuit conditions and responder messages;
the data processing module is used for realizing the coding and decoding of data in the data transmission process;
and the data communication module is used for realizing communication between the train and a train workshop, between the train and a station and between trackside equipment.
Furthermore, in step 2, the display interface module is used for visually displaying the train operation process, the data source of the display interface module is data transmitted to the simulation data module by the simulation function module, and the display content comprises a train operation line diagram, a train operation monitoring diagram, a station control interface and a train control interface.
Further, the display contents of the display interface module include a train operation line diagram, a train operation monitoring diagram, a station control interface and a train control interface, and the specific contents are as follows:
the train operation circuit diagram comprises circuit diagram displays of interval operation, head line receiving and side line receiving, and comprises responder information, track circuit codes and corresponding changes of the state of a signal machine during the train operation;
the train operation monitoring diagram has the function of drawing a train speed curve in real time according to the train operation speed generated by the ATO module and the train allowable speed information generated by the ATP module; and displaying the position information of all trains on the existing line in real time;
the station control interface displays the state information of trains, tracks and trackside equipment in the station and comprises an entrance locking, car buckling and car jumping function setting interface;
the train control interface displays information of train position, speed, allowable speed, track circuit code, braking state and operation mode, and comprises an implementation interface of setting of the initial state of the train and various manual operation functions in the train operation process.
Further, in step 3, according to the service flow described by the logic language obtained in step 1, adding one or more pieces of node information to be tested, generating a group of train operation information completely covering the relevant node information, and storing the train operation information in the simulation data module designed in step 2 to obtain a group of test cases of the simulation system which can be used for the train control system.
Further, the specific functions of each basic module in the simulation functional module are as follows:
compared with the prior art, the invention has the beneficial effects that: (1) train control system software simulation is adopted, cross-platform use can be realized, and the use is convenient; the operation is simple, and the operation is easy to operate; (2) each part of the train control system is packaged according to modules and is integrated under a framework, so that the complexity of system simulation is reduced, and the system has basic functions; (3) the whole system can be synchronously released on each computer in a laboratory, and the requirement of simultaneous use of multiple ends is met; single machine test can be carried out, and cooperation among multiple stations can be realized; (4) the system has the capability of secondary development, and the operation logic of the train can be adjusted according to actual requirements.
Drawings
FIG. 1 is a flow chart of a train control system software simulation test method.
FIG. 2 is a functional diagram of a software simulation system architecture.
Fig. 3 is a diagram illustrating modeling of a safety protection automaton of a train.
Detailed Description
The whole flow of the net-based train control system software simulation test method provided by the invention is shown in figure 1. Firstly, analyzing a selected train control system to obtain a functional hardware list and service logic information; then, designing a software simulation system to simulate hardware functions and service logic information; and finally, designing a test system, and generating a group of train operation data for testing the software simulation system to obtain a final train control system software simulation test system. The following steps are specifically described:
first, the selected train control system is analyzed. Acquiring a train control system key hardware information list including but not limited to a responder, a zone controller and the like; and describing key business logic in the running process of the train control system through the interval time sequence logic, wherein the key business logic comprises but is not limited to train collision protection, train access and the like.
And secondly, designing a train control system software simulation system. The corresponding structural function diagram of the system is shown in fig. 2.
The software simulation system comprises a simulation function module, a simulation data module and a display interface module. Wherein:
1. the simulation function module consists of trackside information simulation and train simulation, wherein the trackside information simulation comprises trackside circuit simulation, trackside circuit information processing, responder simulation and responder information processing; the Train simulation module includes an ATO (Automatic Train Operation) module and an ATP (Automatic Train Protection) module. The ATP module and the responder information processing module have important influence on the operation of the train control system, so that the ATP module and the responder information processing module are used as the key point of the simulation system, provide a secondary development function and meet the train control requirements under various different situations. The codes of the other modules are not disclosed, and only external interfaces are provided. And packaging the non-exposed modules into a dynamic link library, wherein the interface calling method is described by a detailed example.
1.1, the track circuit simulation module and the track circuit information processing function are used for sending a tracking code sequence or a track circuit code sequence required by special route access according to the section where the train runs and the station route access information, and providing corresponding information for calculating an overspeed protection curve for the ATP module.
1.2, the functions of the responder information simulation module and the responder information processing module are to send the responder information in real time according to the train running distance and the distance triggering principle at a fixed point, and provide various line data for calculating the overspeed protection curve for the ATP module.
1.3, the ATO module has the functions of realizing the switching function of the running mode of the train and various manual operation functions in the running process of the train; the ATP module is used for respectively calculating the maximum running speed allowed by the train under the mobile block and the fixed block in real time under different modes according to the line speed limit information, the track section information and the position information of the train, monitoring the running state of the train and preventing overspeed;
2. the simulation data module consists of a simulation line database, data processing and data communication; the simulation line database is used for storing line data required by the operation of the simulation train control system, and comprises access information, line conditions and responder messages; the data processing is used for encoding and decoding the train control information; the data communication is used for data transmission among trains, stations and trackside equipment.
2.1, the simulation line database has the function of storing line data required by the operation of the simulation train control system, including train operation diagram information, route information, line conditions and responder messages;
2.2.1, the track circuit information processing function is to decode the track circuit information received by the vehicle-mounted equipment according to the track circuit related protocol of the train control system, wherein the track circuit information comprises uplink and downlink, carrier frequency and low-frequency information.
2.2.2, the function of the responder message processing module is to decode the responder message information received by the vehicle-mounted equipment according to the responder message related protocol in the train control system responder application principle. The transponder message information comprises line data in front of train operation, including transponder link information, track section information, static line speed limit, gradient, temporary speed limit, phase separation zone information and the like.
2.3, the data communication module is used for realizing communication between the train and the workshop and providing position information for realizing mobile blocking; the communication between the train and the station and the trackside equipment is realized, and data is provided for realizing the function of the simulation system.
3. The display interface module is used for visually displaying the train running process, the data source of the display interface module is data transmitted to the data module by the function simulation module, and the display contents comprise a train running line diagram, a train running monitoring diagram, a station control interface and a train control interface; the basic principle is that a network frame framework is used for carrying out module encapsulation on each part of the train control system, the XAML language is used for compiling an interface, and data generated by the modules are visually displayed in a graphic mode. After the relevant test cases are operated, the correctness of the module functions and the effectiveness and completeness of the test case sequence can be judged by observing the visual display interface of the train operation process.
3.1, the train operation line diagram comprises line diagram displays of interval operation, head line receiving and side line receiving. The method comprises the steps of responding to information of a train in operation, track circuit codes and corresponding changes of the state of a signal machine;
3.2, the function of the train operation monitoring graph is to draw a train speed curve in real time according to the train operation speed generated by the ATO module and the train allowable speed information generated by the ATP module; and displaying the position information of all trains on the existing line in real time;
3.3, the station control interface displays the state information of the train, the track and the trackside equipment in the station and comprises a function setting interface for route locking, vehicle buckling, vehicle jumping and the like;
3.4, the train control interface displays information such as the position, the speed, the allowable speed, the track circuit code, the braking state, the running mode and the like of the train, and comprises an implementation interface of the initial state of the train and various manual operation functions in the running process of the train;
and thirdly, designing a simulation system test system. And modeling according to the interval time sequence logic obtained in the first step to describe the activity process of the train. And selecting a node to be tested, traversing all paths including the node in the model to obtain a group of train operation records covering the node to be tested, and storing the records in the simulation line database to be used as a test case of the simulation system. And obtaining a final train control system software simulation test system.
An automaton is used for modeling the running state of the train, wherein different running states of the train in different intervals are used as basic states, positioning information, signal lamp information and zone controller information received by the train are used as conditions for state conversion, the stop of the train at an initial station is used as an initial state, and the stop state of the train at a terminal station is used as a termination state, so that an automaton model is established;
the modeling method of the automaton is explained below by taking the safety protection of the train as an example, as shown in fig. 3;
wherein in the transition conditions:
the signal indicates whether the train receives a signal sent by the zone controller, 1 indicates that the signal is received, and 0 indicates that the signal is not received;
the position represents train positioning information, and the value of the train positioning information indicates that the train is located in the ith interval;
rgb represents a traffic signal in the interval, and when the value is r, the traffic is forbidden, and when the value is g, the traffic is permitted;
distance is distance information sent by the zone controller and represents the minimum distance between the train and other trains in front of the train;
the safety distance is the safe distance of the train in the running process.
In the running process of the train, if the distance between the train and the front train is less than the safe distance, the train needs to be decelerated or stopped to ensure the safe distance, and after the train returns to the safe distance, the train returns to a normal running state;
when the train can not receive the information of the zone controller, the train protection is changed into a fixed block, the signal machine starts to take effect, and during the period, if the train receives the information of the zone controller again, the train returns to a normal running state;
in the fixed block process, train safety is guaranteed by the signal at the end of the interval, when other trains exist in the next interval, the signal is a red light, the train is forbidden to pass, no other trains exist in the current interval, and the signal is a green light, so that the train is permitted to enter the next interval.
The whole train system is divided into a plurality of similar intervals, the state change of the whole system can be obtained by combining and sorting the state change graphs of the intervals, and a group of test data can be obtained by traversing the path containing the node to be tested.
The invention takes the development difficulty and the cross-platform performance of the system into consideration, and develops a software simulation test system of a train control system based on communication by using a net-based framework. The simulation test system packages each part of the train control system into different modules which are relatively independent and can be programmed and modified. The modules capable of being developed secondarily comprise an ATP (train overspeed protection) module and a transponder information receiving module, programming modification can be carried out on the corresponding modules, and the program operation result can be seen in a graphical interface in real time, so that train control logics which possibly have differences under different situations can be met. The software simulation system of the train control system can judge the correctness of the module function and the validity and completeness of the test case sequence by observing the visual display interface of the train running process after running the related test case; the aim of performing instance verification on the intelligent internetware capable of growing is achieved through a deeper secondary development and different test sequence generation methods.
Claims (8)
1. A train control system software simulation test method is characterized in that a given train control system or a certain type of train control system is subjected to abstraction and simplification of hardware and functions, and a simulation test system which is consistent with the abstract and simplified hardware and functions is designed, and the method comprises the following concrete steps:
step 1, simplifying functions of a given train control system, extracting key hardware information and business process logic as a basis for designing a simulation test system;
step 2, according to abstracted hardware function information and business logic, realizing hardware function and business logic flow through software simulation, and designing a software simulation system, wherein the software simulation system consists of a simulation function module, a simulation data module and a display interface module;
and 3, designing a test case generator of the train control system according to the abstract business process logic, selecting key nodes to be tested, acquiring a group of train operation information completely covering the related node information, storing the train operation information in a simulation data module, and using the train operation information as a test case of a simulation system of the train control system.
2. The train control system software simulation test method as claimed in claim 1, wherein in step 1, a functional hardware list including track information and a transponder in a target train control system is extracted, and a core service logic of the train control system including train collision protection and computer interlocking is abstracted by using a logic language.
3. The train control system software simulation test method according to claim 1, wherein in the step 2, the simulation function module is composed of a trackside information simulation module and a train simulation module, and the function of the simulation function module is to simulate the functions of each component of the train control system; the trackside information simulation module comprises a trackside circuit simulation module, a trackside circuit information processing module, a transponder simulation module and a transponder information processing module; the train simulation module comprises a train automatic operation module and a train automatic protection module.
4. The train control system software simulation test method according to claim 3, wherein the specific functions of each basic module in the simulation function module are as follows:
the trackside circuit simulation module is used for sending a tracking code sequence or a track circuit code sequence required by special route access according to the section where the train runs and station route access information and providing response information for calculating an overspeed protection curve for the automatic train protection module;
the trackside circuit information processing module is used for processing the acquired circuit information according to a relevant protocol of a track circuit of the train control system so as to facilitate transmission;
the responder simulation module simulates the trigger of the responder at the starting and stopping positions of the train track interval according to the running distance of the train, and sends the responder message in real time to provide various line data for calculating an overspeed protection curve for the train automatic protection module;
the responder message processing module decodes the responder message information received by the simulated vehicle-mounted equipment in the train according to a responder message related protocol in a train control system responder principle; the transponder message information comprises the line data in front of the train, including transponder link information, track interval information, static line speed limit, temporary speed limit and phase separation zone information;
the train automatic operation module is used for realizing the running mode switching function of the train and various manual operation functions in the running process of the train;
and the train automatic protection module is used for respectively calculating the maximum running speed allowed by the train under the mobile block and the fixed block in real time under different modes according to the line speed limit information, the track section information and the position information of the train, and monitoring the running state of the train.
5. The train control system software simulation test method according to claim 1, wherein in step 2, the simulation data module is composed of a simulation line database, data processing and data communication; its function is to store, transmit and process basic data information;
the simulation circuit database is used for storing circuit data required by the operation of the train control system simulation system, and comprises train operation diagram information, route information, circuit conditions and responder messages;
the data processing module is used for realizing the coding and decoding of data in the data transmission process;
and the data communication module is used for realizing communication between the train and a train workshop, between the train and a station and between trackside equipment.
6. The train control system software simulation test method according to claim 1, wherein in the step 2, the display interface module is used for visually displaying the train operation process, the data source is the data transmitted to the simulation data module by the simulation function module, and the display contents comprise a train operation line diagram, a train operation monitoring diagram, a station control interface and a train control interface.
7. The train control system software simulation test method according to claim 6, wherein the display contents of the display interface module include a train operation line diagram, a train operation monitoring diagram, a station control interface and a train control interface, and the specific contents are as follows:
the train operation circuit diagram comprises circuit diagram displays of interval operation, head line receiving and side line receiving, and comprises responder information, track circuit codes and corresponding changes of the state of a signal machine during the train operation;
the train operation monitoring diagram has the function of drawing a train speed curve in real time according to the train operation speed generated by the ATO module and the train allowable speed information generated by the ATP module; and displaying the position information of all trains on the existing line in real time;
the station control interface displays the state information of trains, tracks and trackside equipment in the station and comprises an entrance locking, car buckling and car jumping function setting interface;
the train control interface displays information of train position, speed, allowable speed, track circuit code, braking state and operation mode, and comprises an implementation interface of setting of the initial state of the train and various manual operation functions in the train operation process.
8. The train control system software simulation test method according to claim 1, characterized in that in step 3, according to the business process described by the logic language obtained in step 1, one or more pieces of node information to be tested are added, a group of train operation information completely covering the relevant node information is generated, and the train operation information is stored in the simulation data module designed in step 2, so as to obtain a group of test cases which can be used for the simulation system of the train control system.
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| CN113535543A (en) * | 2021-06-09 | 2021-10-22 | 卡斯柯信号有限公司 | Test data generation method, device, equipment and medium for TACS system |
| CN114489028A (en) * | 2022-04-01 | 2022-05-13 | 北京全路通信信号研究设计院集团有限公司 | Train control system test method and system |
| CN115158400A (en) * | 2022-06-22 | 2022-10-11 | 中铁工程设计咨询集团有限公司 | Urban rail vehicle-mounted equipment and testing method thereof |
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