CN113791549A - Train pressure occupation simulation test system and method - Google Patents
Train pressure occupation simulation test system and method Download PDFInfo
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Abstract
The embodiment of the application discloses a train pressure occupation simulation test system and a train pressure occupation simulation test method, wherein the system comprises an upper computer, a controller, an actuator and a simulation ballast bed device; the upper computer is connected with the controller through a data transmission line, the controller is connected with the actuator, and the actuator is arranged on the simulation ballast bed device; the upper computer is used for generating a test instruction according to the test requirement; the controller is used for generating a control signal according to the generated test instruction and sending the control signal to the actuator; and the actuator is used for carrying out a train pressure occupation simulation test on the simulation track bed device according to the control signal.
Description
Technical Field
The embodiment of the application relates to but is not limited to the technical field of rail transit, in particular to a train pressure occupation simulation test system and method.
Background
The uninsulated track circuit is a key device of a train operation control system and is mainly used for realizing train occupancy check and ground train continuous information transmission. The working principle of the track circuit is as follows: the track circuit transmitter generates a frequency shift signal according to the coding control command, the frequency shift signal is received and decoded by the track circuit receiver through a signal transmission channel formed by equipment such as outdoor cables, steel rails and the like, and the track circuit receiver drives a track relay to work according to a decoding result; when no vehicle is idle in the track section, the decoded signal of the receiver is higher than the suck-up threshold, and the track relay sucks up; when the track section is occupied by vehicles, the decoded signal of the receiver is lower than the suction threshold, and the track relay falls down.
The laboratory simulation test aiming at the train pressure occupying scene comprises the following methods:
(1) manual shunt test
On the simulation track bed, the simulation track bed is short-circuited by the shunt line, so that the simulation of the train pressure occupation is realized.
(2) Circular orbit testing
The method has the defects that the investment is high, and the simulation of the ultrahigh-speed running of the train is difficult.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
The present disclosure provides a train pressure occupation simulation test system and method, which realize the train pressure occupation simulation test according to the control signal.
On one hand, the present disclosure provides a train pressure occupation simulation test system, which comprises an upper computer, a controller, an actuator and a simulation ballast bed device; the upper computer is connected with the controller through a data transmission line, the controller is connected with the actuator, and the actuator is arranged on the simulation ballast bed device;
the upper computer is used for generating a test instruction according to the test requirement;
the controller is used for generating a control signal according to the generated test instruction and sending the control signal to the actuator;
and the actuator is used for carrying out a train pressure occupation simulation test on the simulation track bed device according to the control signal.
In an exemplary embodiment, the controller includes a PLC or a single chip microcomputer.
In an exemplary embodiment, the actuator includes a relay and a shunt resistor;
the control coil of the relay is connected with the output end of the controller; one end of the relay contact is connected with one end of the shunt resistor, and the other end of the relay contact and the other end of the shunt resistor are respectively connected to the two simulated rails of the simulated track bed device.
In an exemplary embodiment, the performing a train pressure occupation simulation test on the simulated track bed device according to the control signal includes:
the control coil of the relay correspondingly opens or closes two ends of the relay contact according to the control signal, so that the shunt resistor is disconnected or connected with the simulation ballast bed device; when the shunt resistor is disconnected with the simulation track bed device, the simulation track bed device is in a high-resistance state representing that no train occupies the pressure track; when the shunt resistor is connected with the simulation track bed device, the simulation track bed device is in a low-resistance state representing the train pressure occupying track.
In an exemplary embodiment, the shunt resistance includes 0 Ω, 0.06 Ω, 0.15 Ω, 0.25 Ω.
On the other hand, the present disclosure also provides a method for train pressure occupation simulation test, which is applied to the train pressure occupation simulation test system in any of the above embodiments, and includes:
generating a test instruction according to the test requirement;
generating a control signal according to the generated test instruction;
and carrying out a train pressure occupation simulation test on the simulation track bed device according to the control signal.
In an exemplary embodiment, the test instructions include: the number of single-section actuators, the number of instruction bits, the shift period, the shift direction, whether to turn back and the position of the turn-back section.
In an exemplary embodiment, the controller includes a plurality of outputs; each output end outputs a control signal; the control signal comprises 1 and 0;
when the control signal of the output end is 0, the relay coil connected with the output end is controlled to correspondingly disconnect the two ends of the relay contact, and the shunt resistor is disconnected with the simulation ballast bed device to perform the train-free voltage occupation test;
and when the control signal of the output end is 1, controlling a relay coil connected with the output end to correspondingly close two ends of the relay contact, and connecting the shunt resistor with the simulation ballast bed device to perform the occupied pressure test of the train.
In an exemplary embodiment, the number of single-section actuators is the number of per track section placement actuators determined according to test requirements;
the number of instruction bits is determined according to the number of controller nodes;
the controller nodes and the actuators are in one-to-one correspondence;
and the displacement period is determined according to the number of the arranged actuators of each track section, the length of the train and the running speed of the train.
In an exemplary embodiment, the shift period is calculated as follows:
determining an instruction shifting period by adopting an instruction shifting period calculation formula according to the number of the actuators arranged in each track section, the length of the train and the running speed of the train, wherein the instruction shifting period calculation formula is as follows:
T＝(L÷V)÷K；
in the above formula, T is the command shift period, K is the number of actuators arranged in each track section, L is the sum of the length of the track section and the length of the train, and V is the train running speed.
The embodiment of the application discloses a train pressure occupation simulation test system and a train pressure occupation simulation test method, wherein the system comprises an upper computer, a controller, an actuator and a simulation ballast bed device; the upper computer is connected with the controller through a data transmission line, the controller is connected with the actuator, and the actuator is arranged on the simulation ballast bed device; the upper computer is used for generating a test instruction according to the test requirement; the controller is used for generating a control signal according to the generated test instruction and sending the control signal to the actuator; and the actuator is used for carrying out a train pressure occupation simulation test on the simulation track bed device according to the control signal. Through the scheme disclosed by the invention, the train pressure occupation simulation test can be realized according to the control signal.
Other aspects will be apparent upon reading and understanding the attached drawings and detailed description.
Drawings
Fig. 1 is a schematic diagram of a train pressure occupation simulation test system according to an embodiment of the present invention;
FIG. 2 is a schematic electrical diagram of an actuator in some exemplary embodiments;
fig. 3 is a test flow chart of a train pressure occupation simulation test system according to an embodiment of the present invention.
Detailed Description
Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings. It should be noted that the features of the embodiments and examples of the present application may be arbitrarily combined with each other without conflict.
The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
Fig. 1 is a schematic diagram of a train pressure occupation simulation test system according to an embodiment of the present disclosure, and as shown in fig. 1, the system includes an upper computer 110, a controller 120, an actuator 130, and a simulation ballast bed device 140;
the upper computer 110 is used for generating a test instruction according to the test requirement;
the controller 120 is configured to generate a control signal according to the generated test instruction, and send the control signal to the actuator;
the actuator 130 is configured to perform a train pressure occupation simulation test on the simulated track bed device 140 according to the control signal.
In this embodiment, the upper computer 110 is connected to the controller 120 through a data transmission line, the controller 120 is connected to the actuator 130, and the actuator 130 is disposed on the simulated track bed device 140; the connection between the controller 120 and the actuator 130 may be a cable or a wireless connection, and is not particularly limited.
In an exemplary embodiment, the controller includes a PLC or a single chip microcomputer.
In one exemplary embodiment, the actuator includes a relay and a shunt resistor. As shown in the circuit diagram of the actuator shown in fig. 2, the control coil of the relay is connected with the output end of the controller; one end of a contact of the relay is connected with one end of the shunt resistor, and the other end of the contact of the relay and the other end of the shunt resistor are respectively connected to the two simulated rails of the simulated track bed device. The simulation track is a simulation track with equivalent resistance and inductance adopted by the simulation track bed.
In an exemplary embodiment, the performing a train pressure occupation simulation test on the simulated track bed device according to the control signal includes: the control coil of the relay correspondingly opens or closes two ends of the relay contact according to the control signal, so that the shunt resistor is disconnected or connected with the simulation ballast bed device; when the shunt resistor is disconnected with the simulation track bed device, the simulation track bed device is in a high-resistance state representing that no train occupies the pressure track; when the shunt resistor is connected with the simulation track bed device, the simulation track bed device is in a low-resistance state representing the train pressure occupying track. For example: for each section of the simulation track, the switching of the shunt resistance between the low resistance and the high resistance represents the switching of the pressure occupying state and the clear state of the train, namely the pressure occupying simulation test.
In an exemplary embodiment, the shunt resistance includes 0 Ω, 0.06 Ω, 0.15 Ω, 0.25 Ω. In this embodiment, the shunt resistor has different resistances of 0 Ω, 0.06 Ω, 0.15 Ω, and 0.25 Ω in the low resistance, which is equivalent to that the train occupies the track, and different resistances respectively represent different train wheels and rail contact resistances, that is, different resistances respectively represent different situations, and a small resistance represents good wheel-rail contact, which generally represents a heavy-duty train situation; a large resistance value indicates a poor contact between the wheel and the rail, and generally indicates a light-load train condition. The shunt resistor may be arbitrarily increased by another resistance value, which is not particularly limited.
The invention also provides a method for train pressure occupation simulation test, which is applied to the train pressure occupation simulation test system in any one of the above embodiments, and as shown in fig. 3, the method comprises the following steps: step 310 to step 330;
and step 330, performing a train pressure occupation simulation test on the simulated track bed device according to the control signal.
In this embodiment, the test instruction includes: the number of single-section actuators, the number of instruction bits, the shift period, the shift direction, whether to turn back and the position of the turn-back section.
In an exemplary embodiment, the controller includes a plurality of outputs; each output end outputs a control signal; the control signal comprises 1 and 0; when the control signal of the output end is 0, the relay coil connected with the output end is controlled to correspondingly disconnect the two ends of the relay contact, and the shunt resistor is disconnected with the simulation ballast bed device to carry out the train-free voltage occupation test; when the control signal of the output end is 1, the two ends of the relay contact are correspondingly closed by controlling the relay coil connected with the output end, and the shunt resistor is connected with the simulation ballast bed device to carry out the occupied pressure test of the train.
In one exemplary embodiment, the number of single-section actuators is the number of per track section placement actuators determined according to test requirements; the number of instruction bits is determined according to the number of controller nodes; the controller nodes and the actuators are in one-to-one correspondence; the shift period is calculated according to the number of the actuators arranged on each track section, the length of the train and the running speed of the train.
In one exemplary embodiment, the shift period is calculated as follows: determining an instruction shifting period by adopting an instruction shifting period calculation formula according to the number of the actuators arranged in each track section, the length of the train and the running speed of the train, wherein the instruction shifting period calculation formula is as follows:
T＝(L÷V)÷K；
in the above formula, T is the command shift period, K is the number of actuators arranged in each track section, L is the sum of the length of the track section and the length of the train, and V is the train running speed.
Example 1
In this example, the train pressure occupation simulation test is executed by using the train pressure occupation simulation test system, and the specific test process is as follows:
step 11, generating a test requirement table according to the on-site train pressure data or the test requirement;
and step 12, generating a test instruction according to the test requirement.
In this step, 1) the number of actuators arranged per track section is K, and therefore the total number of actuators is determined to be M — N × K;
2) according to the fact that each controller node corresponds to one actuator, the number of the controller nodes is M;
3) the instruction bit number is M, and the instruction shift cycle is calculated as follows: t ═ L ÷ V) ÷ K;
4) and generating a test instruction according to the information.
| Item | Parameter(s) | Item | Parameter(s) |
| Single-segment actuator | K | Direction of displacement | On demand of same |
| Number of instruction bits | M | Whether to turn back | On demand of same |
| Shift period | T | Location of turn-back zone | On demand of same |
And step 13, generating a control signal according to the test instruction, and executing a train pressure occupation simulation test.
The train pressure occupation simulation system comprises the following operation steps:
1) connecting and operating the system;
2) monitoring the operation process;
3) and (5) confirming a system result.
Example two
In this example, a field simulation test requirement is adopted, and the train pressure occupation simulation test system is used to execute an example of the train pressure occupation simulation test, and the specific test process is as follows:
and 21, generating a test requirement table according to the on-site train pressure data or the test requirement.
| Item | Parameter(s) | Item | Parameter(s) |
| Number of track sections | 5 | Direction of train movement | Positive direction of the process |
| Sum of track section length and train length | 1Km | Whether to turn back | With turn-back |
| Speed of train operation | 400Km/h | Location of turn-back zone | Zone 3 |
And step 22, generating a test instruction according to the test requirement.
| Item | Parameter(s) | Item | Parameter(s) |
| Single-segment actuator | 2 | Direction of displacement | Positive direction of the process |
| Number of instruction bits | 10 | Whether to turn back | With turn-back |
| Shift period | 4.5s | Location of turn-back zone | Zone 3 |
And 23, generating a control signal according to the test command.
In generating the control signals in step 23, the following table shows the control signals, where T is a shift period and B1-B10 respectively show the control bits of the control signals, and a total of 10 control bits; 1G to 5G respectively represent track segment names; the occupation indicates that the track section has a train, and the vacancy indicates that no train exists, and the occupation is realized by controlling the shunt resistor through an actuator. The purpose of simulation test is as follows: and testing the performance of a track circuit system and a train control system of the train under different train pressure occupation scenes. The controller generates control signals according to the test instruction, and 0 and 1 in the table are the control signals.
| Time of day | B1 | B2 | B3 | B4 | B5 | B6 | B7 | B8 | B9 | B10 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Time of day | B1 | B2 | B3 | B4 | B5 | B6 | B7 | B8 | | B10 |
| T | ||||||||||
| 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Time of day | B1 | B2 | B3 | B4 | B5 | B6 | B7 | B8 | B9 | B10 |
| 2T | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Time of day | B1 | B2 | B3 | B4 | B5 | B6 | B7 | B8 | B9 | B10 |
| 3T | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
| Time of day | B1 | B2 | B3 | B4 | B5 | B6 | B7 | B8 | B9 | B10 |
| 5T | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
| Time of day | B1 | B2 | B3 | B4 | B5 | B6 | B7 | B8 | B9 | B10 |
| 6T | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Time of day | B1 | B2 | B3 | B4 | B5 | B6 | B7 | B8 | | B10 |
| 7T | ||||||||||
| 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Time of day | B1 | B2 | B3 | B4 | B5 | B6 | B7 | B8 | B9 | B10 |
| 8T | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
And 24, simulating the operation of the train pressure occupation simulation system, wherein the following table shows the simulation operation results of the system at different moments, wherein the section state is idle or occupied. In the following table, 1G to 5G respectively represent track segment names; B1-B10 respectively represent control bits of the control signal; k1 to K10 represent control nodes, respectively.
| Time of day | 1G | 2G | 3G | 4G | 5G |
| 0 | Free up | Free up | Free up | Free up | Free up |
| Time of day | 1G | 2G | 3G | 4G | 5G |
| T | Occupancy | Free up | Free up | Free up | Free up |
| Time of day | 1G | 2G | 3G | 4G | 5G |
| 2T | Occupancy | Occupancy | Free up | Free up | Free up |
| Time of day | 1G | 2G | 3G | 4G | 5G |
| 3T | Free up | Occupancy | Occupancy | Free up | Free up |
| Time of day | 1G | 2G | 3G | 4G | 5G |
| 5T | Free up | Occupancy | Occupancy | Free up | Free up |
| Time of day | 1G | 2G | 3G | 4G | 5G |
| 6T | Occupancy | Occupancy | Free up | Free up | Free up |
| Time of day | 1G | 2G | 3G | 4G | 5G |
| 7T | Occupancy | Free up | Free up | Free up | Free up |
| Time of day | 1G | 2G | 3G | 4G | 5G |
| 8T | Free up | Free up | Free up | Free up | Free up |
In the above table showing the result of the operation of the simulation test system, the track section is free: when no train is occupied, the control bit corresponding to the section is 0, the relay is disconnected, and the actuator outputs high resistance; track section occupation: the pressure of the train is shown, the control bit corresponding to the section is 1, the relay is switched on, and the output of the actuator is low-resistance.
By adopting the simulation test system and the simulation test method, the following technical effects are achieved:
1. the invention can simulate and realize the control of the running direction of the train, including the forward running, the reverse running, the forward turning back, the reverse turning back and the stopping test of the train.
2. The system can realize the control of the running speed of the train in a simulation way, completely covers the speed range of the train from 0km/h to 2000km/h, can be set at will and meets the test requirements of the current train and the future ultra-high-speed train.
3. The invention can realize large-scale multi-section train operation test, and the controller node and the actuator are convenient to expand. The embodiment is 5 sectors, and several hundred sectors can be extended according to logic.
4. If each track segment is 2 actuators (or control nodes), 200 actuators are required for 100 segments.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
Claims (10)
1. A train pressure occupation simulation test system is characterized by comprising an upper computer, a controller, an actuator and a simulation ballast bed device; the upper computer is connected with the controller through a data transmission line, the controller is connected with the actuator, and the actuator is arranged on the simulation ballast bed device;
the upper computer is used for generating a test instruction according to the test requirement;
the controller is used for generating a control signal according to the generated test instruction and sending the control signal to the actuator;
and the actuator is used for carrying out a train pressure occupation simulation test on the simulation track bed device according to the control signal.
2. The train occupancy simulation test system of claim 1, wherein the controller comprises a PLC or a single chip microcomputer.
3. The train occupancy simulation test system of claim 1, wherein the actuator comprises a relay and a shunt resistor;
the control coil of the relay is connected with the output end of the controller; one end of the relay contact is connected with one end of the shunt resistor, and the other end of the relay contact and the other end of the shunt resistor are respectively connected to the two simulated rails of the simulated track bed device.
4. The train pressure occupation simulation test system according to claim 3, wherein the train pressure occupation simulation test performed on the simulated ballast bed device according to the control signal comprises:
the control coil of the relay correspondingly opens or closes two ends of the relay contact according to the control signal, so that the shunt resistor is disconnected or connected with the simulation ballast bed device; when the shunt resistor is disconnected with the simulation track bed device, the simulation track bed device is in a high-resistance state representing that no train occupies the pressure track; when the shunt resistor is connected with the simulation track bed device, the simulation track bed device is in a low-resistance state representing the train pressure occupying track.
5. The train occupancy simulation test system of claim 4, wherein the shunt resistance comprises 0 Ω, 0.06 Ω, 0.15 Ω, 0.25 Ω.
6. A train pressure simulation test method applied to the train pressure simulation test system according to any one of claims 1 to 5, comprising:
generating a test instruction according to the test requirement;
generating a control signal according to the generated test instruction;
and carrying out a train pressure occupation simulation test on the simulation track bed device according to the control signal.
7. The method for train pressure simulation testing according to claim 6, wherein the test instructions include: the number of single-section actuators, the number of instruction bits, the shift period, the shift direction, whether to turn back and the position of the turn-back section.
8. The method for train occupancy simulation test of claim 7, wherein the controller comprises a plurality of outputs; each output end outputs a control signal; the control signal comprises 1 and 0;
when the control signal of the output end is 0, the relay coil connected with the output end is controlled, the two ends of the relay contact are correspondingly disconnected, the shunt resistor is disconnected with the simulation ballast bed device, and the train-free occupation pressure test is carried out;
and when the control signal of the output end is 1, controlling a relay coil connected with the output end to correspondingly close two ends of the relay contact, and connecting the shunt resistor with the simulation ballast bed device to perform the occupied pressure test of the train.
9. The method for train pressure simulation test according to claim 7,
the number of single-section actuators is the number of per-track-section arrangement actuators determined according to test requirements;
the number of instruction bits is determined according to the number of controller nodes;
the controller nodes and the actuators are in one-to-one correspondence;
and the displacement period is determined according to the number of the arranged actuators of each track section, the length of the train and the running speed of the train.
10. The method for train pressure simulation test according to claim 7, wherein the shift period is calculated as follows:
determining an instruction shifting period by adopting an instruction shifting period calculation formula according to the number of the actuators arranged in each track section, the length of the train and the running speed of the train, wherein the instruction shifting period calculation formula is as follows:
T＝(L÷V)÷K；
in the above formula, T is the command shift period, K is the number of actuators arranged in each track section, L is the sum of the length of the track section and the length of the train, and V is the train running speed.
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Cited By (1)
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| CN115657505A (en) * | 2022-12-29 | 2023-01-31 | 卡斯柯信号(北京)有限公司 | Simulation test system and method |
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| CN115657505A (en) * | 2022-12-29 | 2023-01-31 | 卡斯柯信号(北京)有限公司 | Simulation test system and method |
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