CN114291060B - Urban electric motor train unit, rescue mode analysis method, brake control method and system - Google Patents
Urban electric motor train unit, rescue mode analysis method, brake control method and system Download PDFInfo
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Abstract
The invention discloses a city electric vehicle group and a rescue mode analysis method, a brake control method and a system, which are used for judging whether all common brake hard wires of head vehicles of the city electric vehicle group are low level or not, if so, judging that the city electric vehicle group is in a locomotive vehicle rescue mode when train pipe pressure between the head vehicles of the city electric vehicle group and rescue vehicles is greater than a first set threshold value; otherwise, when the train pipe pressure between the head vehicle of the electric train set in the city area and the rescue vehicle is smaller than a second set threshold value, the electric train set in the city area is judged to be in the subway vehicle rescue mode. The electric motor train unit in the urban area can automatically identify which type of rail transit vehicle is rescued according to the air pipe of the head vehicle and the electric connection condition, and meanwhile, the electric motor train unit in the urban area can respond to a braking instruction from a rescue vehicle.
Description
Technical Field
The invention relates to a braking system of an electric motor train unit in a city area, in particular to a rescue mode analysis method, a braking control method and a braking control system of the electric motor train unit in the city area.
Background
At present, a straight-through type electric pneumatic brake system is generally adopted in electric motor trains in China, and a main air pipe (single pipe system) penetrating through the whole train is arranged to provide a brake energy for a brake control system of each section of train. With the continuous growth of domestic urban communities, how rail transit vehicles are interconnected and communicated among different railway lines becomes an urgent need, and how a braking system of an electric motor train unit in an urban area adapts to the need becomes a challenge. The key of interconnection and intercommunication of the electric motor train units in the urban area among different railway lines is how to carry out linkage application with main railway rolling stock and subway vehicles, and especially how to carry out effective rescue by vehicles on the original lines when the electric motor train units in the urban area have faults on the interconnection lines.
CN107235041A improves a synchronous control circuit and a control method for emergency braking of rail vehicle rescue, which controls the control mode of the braking force generated by the whole train by reducing the pressure of the train pipe, and due to the influence of the volume and length of the train pipe, the response time of the front and the rear vehicle brakes is delayed, and meanwhile, the rail vehicle rescue cannot be automatically identified.
Disclosure of Invention
The invention aims to solve the technical problems that aiming at the defects of the prior art, the urban electric vehicle group, the rescue mode analysis method, the brake control method and the system are provided, the brake response time is shortened, and the rescue efficiency is improved.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a city electric motor train unit rescue mode analysis method comprises the following steps:
judging whether all the service brake hard wires of the head vehicle of the urban area electric motor train unit are low level, if so, judging that the urban area electric motor train unit is in a locomotive vehicle rescue mode when the train pipe pressure between the head vehicle of the urban area electric motor train unit and the rescue vehicle is greater than a first set threshold value; otherwise, when the train pipe pressure between the head vehicle of the electric train unit in the city area and the rescue vehicle is smaller than a second set threshold value, the electric train unit in the city area is judged to be in the subway vehicle rescue mode.
The invention can automatically identify which rail transit vehicle is rescued according to the air pipes of the vehicles at the head of the electric motor train unit in the city area and the electric connection condition, and can avoid the rescue ineffectiveness caused by mismatching of rescue modes due to human factors. Meanwhile, the rescued vehicle does not need to be provided with a corresponding mode conversion switch according to the type of the rescued vehicle, and the rescue vehicle has a simple structure and low cost. Meanwhile, the invention transmits the braking instruction through the electric signal, reduces the braking response time and greatly improves the rescue efficiency.
The first set threshold is 50kPa. When the locomotive is rescued, the normal running pressure of the train pipe of the locomotive is 500kPa/600kPa,50kPa is a typical low value, and the success of the rescue can be ensured.
The second set threshold is 10kPa. The second set threshold is set to 10kPa to avoid acquisition errors, taking into account errors of the actual acquisition system, especially zero drift of the sensor.
And a pressure sensor is arranged in the train pipe, so that the pressure of the train pipe can be monitored conveniently.
The head vehicle of the electric motor train unit in the urban area is communicated with the rescue vehicle through a main air pipe. The head vehicle can supply air to subsystems such as an air spring, a vehicle door and a brake of the rescue vehicle through a main air pipe, and the total air pressure required by normal driving of the rescue vehicle is ensured.
The invention also provides a system for analyzing the rescue mode of the electric motor train unit in the urban area, which comprises computer equipment; the computer device is configured for performing the steps of the rescue pattern analysis method described above.
As an inventive concept, the present invention also provides a brake control method in a rescue mode of an electric motor train unit in an urban area, which comprises:
when the electric motor train units in the city area are in a locomotive vehicle rescue mode, if the emergency brake hard line of the head vehicle of the electric motor train units in the city area is at a high level, the electric motor train units in the city area apply emergency brake;
when the electric motor train units in the urban area are in a subway vehicle rescue mode, controlling the electric motor train units in the urban area to be in the service brake modes of different grades according to the power loss and gain conditions of all service brake hard lines; when the emergency brake hard line of the electric motor train unit in the city area is at a low level, the electric motor train unit in the city area applies emergency brake;
and judging the rescue mode of the urban electric vehicle group according to the analysis method.
In the invention, when the electric motor train unit in the urban area is in a subway vehicle rescue mode, the concrete implementation process of controlling the electric motor train unit in the urban area to be in the service brake modes of different grades according to the power getting and losing conditions of all service brake hard lines comprises the following steps:
when the first service brake hard line, the second service brake hard line and the third service brake hard line are all in high level, the electric motor train unit in the city area applies primary service brake;
when the first service brake hard line is at a low level, and the second service brake hard line and the third service brake hard line are both at a high level, the electric motor train unit in the city area applies a secondary service brake;
when the first service brake hard wire and the third service brake hard wire are both at a high level and the second service brake hard wire is at a low level, the electric motor train unit in the city area applies three-level service brake;
when the first service brake hard line and the second service brake hard line are both at a high level and the third service brake hard line is at a low level, the electric motor train unit in the city area applies four-level service brake;
when the first service brake hard line and the third service brake hard line are both at a low level and the second service brake hard line is at a high level, the electric motor train unit in the city area applies five-level service brake;
when the first service brake hard line is at a high level, and the second service brake hard line and the third service brake hard line are both at a low level, the electric motor train unit in the city area applies six-level service brake;
and when the first service brake hard line and the second service brake hard line are both at low level and the third service brake hard line is at high level, the electric motor train unit in the city area applies seven levels of service brakes.
The application of seven-level braking can also be considered in the braking mode of the existing motor train unit (the existing motor train unit adopts seven-level braking, namely, the maximum common braking of the train is equally divided into seven parts).
As an inventive concept, the invention also provides a brake control system under the rescue mode of the urban area electric motor train unit, which comprises computer equipment; the computer device is configured for executing the steps of the above-described brake control method.
The invention further provides a city electric motor train unit which comprises the analysis system and the brake control system.
Compared with the prior art, the invention has the following beneficial effects:
1) The invention gives consideration to the original train control mode of the existing motor train unit, and can simplify manual operation;
2) In the invention, the electric connecting wires needed by two rows of workshops are less (the workshop ends are only connected with 5 electric signal wires);
3) The method has the advantages that the method combines the electric hard wire switching value signal with the pressure sensor analog value (the pressure sensor is arranged in the train pipe and used for monitoring the pressure of the train pipe and judging the connection mode of the rescue vehicle and the rescued vehicle through the pressure threshold value) signal, so that the judgment accuracy is improved;
4) The invention can lead the rescued vehicle to automatically judge the type of the rescued vehicle and automatically generate corresponding braking action according to the braking instructions of different rescued vehicles;
5) According to the invention, the braking instruction is transmitted through the electric signal, so that the braking response time is reduced, the delay of the braking response time of the front vehicle and the rear vehicle is overcome, and the rescue efficiency is improved.
Drawings
Fig. 1 is a schematic brake control diagram of an electric motor train unit in a city area when a vehicle rescues in embodiment 1 of the present invention.
Fig. 2 is a control flow chart of an urban area electric vehicle group rescue self-adaption in embodiment 2 of the invention.
Detailed Description
As shown in fig. 1, on the basis of an original straight-through type electro-pneumatic brake system of a city area electric motor train unit, corresponding devices are arranged at two ends of the electric motor train unit, when the city area electric motor train unit is rescued by a main railway locomotive, the city area electric motor train unit can automatically recognize the coupling mode and can receive a brake instruction from a locomotive train pipe to control the brake system of the city area electric motor train unit to generate corresponding brake force; when the electric motor train unit in the urban area is rescued by the subway vehicle in an associated mode, the braking system of the electric motor train unit in the urban area can automatically recognize the associated mode, and meanwhile, can receive a braking instruction from the subway vehicle and control the braking system of the electric motor train unit in the urban area to generate corresponding braking force. In the embodiment 1 of the invention, corresponding electric and pipeline interfaces are arranged at two ends of an electric motor train unit in the urban area. Train control system (TCMS) real time monitoring gas circuit and pipe connection of first car, including 2 tuber pipes (train pipe and total tuber pipe), 1 end connector (3 service brake DC110V hard lines gather the circuit, 1 emergency brake DC110V hard lines gather the circuit, 1 DC110V backward flow ground wire), 1 pressure sensor and the circuit of gathering the train pipe pressure.
Referring to fig. 2, the logic for determining the self-adaptation of the electric locomotive group in the urban area according to embodiment 2 of the present invention is as follows.
When the locomotive is rescued, 2 air pipes (train pipes and a main air pipe) and 1 locomotive end electric connector are connected between the electric locomotive group in the city area and the locomotive, the TCMS of the head vehicle monitors the pressure of the train pipes of the locomotive in real time, meanwhile, the brake instruction from the rescue locomotive is collected through the locomotive end electric connector, and 3 common brake DC110V hard lines in the working condition are all low level.
The head vehicle TCMS collects 3 service brake DC110V hard lines as low level, and automatically identifies the head vehicle as a locomotive rescue mode when monitoring that the pressure of a train pipe is more than 50kPa.
In the locomotive rescue mode, when the head vehicle TCMS acquires that the emergency brake DC110V hard line is at a high level, it indicates that the locomotive triggers the emergency brake, and the head vehicle TCMS controls the safety loop of the electric locomotive group in the urban area to be disconnected, so as to synchronously generate the emergency brake, as shown in table 1.
TABLE 1 definition of electric signals when rescued by rolling stock
In table 1, when the first service brake hard line, the second service brake hard line, and the third service brake hard line are all at high level, the electric motor train unit in the city area applies a first-level service brake; when the first service brake hard line is at a low level, and the second service brake hard line and the third service brake hard line are at a high level, the electric motor train units in the city area apply secondary service brake; when the first service brake hard wire and the third service brake hard wire are both at a high level and the second service brake hard wire is at a low level, the electric motor train unit in the city area applies three-level service brake; when the first service brake hard wire and the second service brake hard wire are both at a high level and the third service brake hard wire is at a low level, the electric motor train unit in the city area applies four-level service brake; when the first service brake hard line and the third service brake hard line are both at a low level and the second service brake hard line is at a high level, the electric motor train unit in the city area applies five-level service brake; when the first service brake hard line is at a high level, and the second service brake hard line and the third service brake hard line are both at a low level, the electric motor train unit in the city area applies six-level service brake; and when the first service brake hard line and the second service brake hard line are both at low level and the third service brake hard line is at high level, the electric motor train unit in the city area applies seven levels of service brakes.
When being rescued by the railcar, only connect 1 tuber pipe (total tuber pipe) and 1 car end electrical connector between electric motor train unit in the city region and the railcar, head vehicle TCMS real time monitoring train pipe pressure (do not actually connect this pipeline, the collection value should be zero), gather the braking instruction that comes from rescuing the railcar through car end electrical connector simultaneously, it is not all low level to gather 3 service brake DC110V hard lines when head vehicle TCMS, when monitoring train pipe pressure and being less than 10kPa simultaneously, automatic identification is for being rescued the mode by the railcar.
In a subway vehicle rescue mode, the head vehicle TCMS sends 7 service brake instructions of different grades to a city electric vehicle group brake system according to the acquired power loss condition of 3 service brake DC110V hard lines; when the collected emergency braking DC110V hard line is at a low level, the subway vehicle triggers emergency braking, and the head vehicle TCMS controls the safety loop of the electric motor train unit in the city area to be disconnected, so that the emergency braking of the electric motor train unit in the city area is synchronously generated, as shown in Table 2.
TABLE 2 definition table of electric signals when being rescued by subway vehicles
In embodiment 3 of the present invention, a method for analyzing a rescue mode of a municipal electric vehicle group includes: judging whether three service brake hard lines of the head vehicle of the urban area electric motor train unit are all low levels, if so, judging that the urban area electric motor train unit is in a locomotive vehicle rescue mode when the train pipe pressure between the head vehicle of the urban area electric motor train unit and the rescue vehicle is greater than a first set threshold value of 50 kPa; otherwise, when the train pipe pressure between the head vehicle of the electric train unit in the city area and the rescue vehicle is smaller than a second set threshold value of 10kPa, the electric train unit in the city area is judged to be in the subway vehicle rescue mode.
The embodiment 4 of the invention also provides a city electric vehicle set rescue mode analysis system, and computer equipment of the system can be a control system of a city electric vehicle set head vehicle.
The embodiment 4 of the invention also provides a brake control system in the city electric train set rescue mode, and the system can be integrated with a control system of a city electric train set head car.
Claims (8)
1. A brake control method for a city electric motor train unit in a rescue mode is characterized by comprising the following steps:
when the electric motor train unit in the city area is in a locomotive rescue mode, if the emergency brake hard line of the head vehicle of the electric motor train unit in the city area is at a high level, the electric motor train unit in the city area applies emergency brake;
when the electric motor train units in the urban area are in a subway vehicle rescue mode, controlling the electric motor train units in the urban area to be in the service brake modes of different grades according to the power loss and gain conditions of all service brake hard lines; when the emergency brake hard line of the electric motor train unit in the city area is at a low level, the electric motor train unit in the city area applies emergency brake;
the rescue mode analysis process of the urban area electric motor train unit comprises the following steps:
judging whether all the service brake hard wires of the head vehicle of the urban area electric motor train unit are low level, if so, judging that the urban area electric motor train unit is in a locomotive vehicle rescue mode when the train pipe pressure between the head vehicle of the urban area electric motor train unit and the rescue vehicle is greater than a first set threshold value; otherwise, when the train pipe pressure between the head vehicle of the electric train set in the city area and the rescue vehicle is smaller than a second set threshold value, the electric train set in the city area is judged to be in the subway vehicle rescue mode.
2. The brake control method for a city area electric consist rescued mode according to claim 1, wherein the first set threshold is 50kPa.
3. The brake control method for an urban electric consist under a rescue mode according to claim 1, wherein the second set threshold is 10kPa.
4. The brake control method for the electric motor train units in the urban area under the rescue mode according to one of claims 1 to 3, characterized in that a pressure sensor is arranged in the train pipe.
5. The brake control method for the city area electric locomotive group under the rescue mode as claimed in one of claims 1 to 3, wherein the head vehicle of the city area electric locomotive group is communicated with the rescue vehicle through a main air duct.
6. The brake control method in the urban area electric motor train unit rescued mode according to claim 1, wherein when the urban area electric motor train unit is in the subway vehicle rescue mode, according to the power getting and losing situation of all service brake hard lines, the concrete implementation process of controlling the urban area electric motor train unit to be in the service brake modes of different grades comprises:
when the first service brake hard wire, the second service brake hard wire and the third service brake hard wire are all in a high level, the electric motor train unit in the city area applies primary service brake;
when the first service brake hard line is at a low level, and the second service brake hard line and the third service brake hard line are both at a high level, the electric motor train unit in the city area applies a secondary service brake;
when the first service brake hard line and the third service brake hard line are both at a high level and the second service brake hard line is at a low level, the electric motor train unit in the city area applies three-level service brake;
when the first service brake hard line and the second service brake hard line are both at a high level and the third service brake hard line is at a low level, the electric motor train unit in the city area applies four-level service brake;
when the first service brake hard wire and the third service brake hard wire are both at a low level and the second service brake hard wire is at a high level, the electric motor train unit in the city area applies a fifth-level service brake;
when the first service brake hard line is at a high level, and the second service brake hard line and the third service brake hard line are both at a low level, the electric motor train unit in the city area applies six-level service brake;
and when the first service brake hard line and the second service brake hard line are both at low level and the third service brake hard line is at high level, the electric motor train unit in the city area applies seven levels of service brakes.
7. A brake control system in a city electric vehicle group rescue mode is characterized by comprising computer equipment; the computer device is configured for performing the steps of the method of one of claims 1 to 6.
8. An electric motor consist in an urban area, characterized in that it comprises a system according to claim 7.
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