CN111997880B - Air compressor control method, terminal device and storage medium - Google Patents
Air compressor control method, terminal device and storage medium Download PDFInfo
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- CN111997880B CN111997880B CN201910446900.1A CN201910446900A CN111997880B CN 111997880 B CN111997880 B CN 111997880B CN 201910446900 A CN201910446900 A CN 201910446900A CN 111997880 B CN111997880 B CN 111997880B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H11/00—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types
- B61H11/06—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types of hydrostatic, hydrodynamic, or aerodynamic brakes
- B61H11/08—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types of hydrostatic, hydrodynamic, or aerodynamic brakes comprising a pump or the like circulating fluid, braking being effected by throttling of the circulation
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Abstract
The application is suitable for the technical field of automatic control, and provides an air compressor control method, terminal equipment and a storage medium, wherein the method comprises the following steps: when a vehicle loaded with a plurality of air compressors is started, starting at least one air compressor; acquiring the pressure of air pipes connected with a plurality of air compressors; starting or stopping at least one air compressor of the plurality of air compressors according to the pressure of the air pipe, wherein when the air compressor is selected from the plurality of candidate air compressors for starting control, a target air compressor which is started preferentially is determined according to the working rate of each candidate air compressor, and the target air compressor is started; the work rate of the air compressor is the ratio of the running time of the air compressor to the running time of the vehicle after the vehicle is started. According to the air compressor control method, the terminal device and the storage medium, start and stop of the air compressor are controlled by calculating the work rate of each air compressor in the vehicle, and therefore the oil emulsification phenomenon of the air compressor is eliminated.
Description
Technical Field
The application belongs to the technical field of automation control, and particularly relates to an air compressor control method, terminal equipment and a storage medium.
Background
In brake systems for urban rail vehicles and motor train units, compressed air is often used as a brake medium to brake the vehicles. Therefore, an air compressor capable of supplying stable compressed air to a vehicle is important in vehicle operation. The existing air compressors, including piston type air compressors, screw type air compressors and sliding vane type air compressors, all adopt oil lubrication to work. During operation of the air compressor, the quality of lubricating oil directly influences the performance and the service life of the air compressor and indirectly influences the braking performance of a vehicle braking system.
When the whole air volume of using of vehicle is less, the condition that the moisture in the air compressor machine cavity can't in time discharge often appears. The water that is detained in the air compressor machine cavity can mix with lubricating oil, leads to appearing oil emulsification phenomenon. The long-time oil emulsification can change the quality of lubricating oil, and seriously influences the safe running of vehicles. The existing control method of the air compressor improves the oil emulsification phenomenon by monitoring and improving the oil temperature of oil lubrication. However, this is only a remedy after the oil emulsification phenomenon has occurred, and the oil emulsification problem is not solved radically.
Disclosure of Invention
In view of this, embodiments of the present application provide an air compressor control method, a terminal device, and a storage medium, so as to solve the problem of oil emulsification occurring in the existing air compressor.
According to a first aspect, an embodiment of the present application provides an air compressor control method, including: when a vehicle loaded with a plurality of air compressors is started, starting at least one air compressor; acquiring the pressure of air pipes connected with the plurality of air compressors; starting or stopping at least one air compressor of the plurality of air compressors according to the pressure of the air pipe, wherein when the air compressor is selected from the plurality of candidate air compressors for starting control, a target air compressor which is started preferentially is determined according to the working rate of each candidate air compressor, and the target air compressor is started; the candidate air compressor is an air compressor in a current stop state, and the working rate of the air compressor is the ratio of the running time of the air compressor to the running time of the vehicle after the vehicle is started.
With reference to the first aspect, in some embodiments of the application, when a vehicle equipped with a plurality of air compressors is started, if the plurality of air compressors are started simultaneously, the start and stop control of the at least one air compressor is performed according to the pressure of the air duct, including: after the plurality of air compressors are started simultaneously, when the pressure of the air pipe reaches a preset stop threshold value, the plurality of air compressors are closed; after the plurality of air compressors are closed, when the pressure of the air pipe is reduced to a preset first starting threshold value, randomly starting any one of the air compressors; after any air compressor is randomly started, when the pressure of the air pipe is not continuously reduced, the working rate of any randomly started air compressor is obtained; when the working rate of any one air compressor which is randomly started reaches a preset working rate threshold value, any one air compressor which is randomly started is closed, and other air compressors are started, wherein the other air compressors are air compressors except the air compressor which is currently closed; and after other air compressors are started, when the pressure of the air pipe reaches a preset stop threshold value again, closing each air compressor.
With reference to the first aspect, in some embodiments of the present application, the determining, according to the operating rate of each candidate air compressor, a target air compressor to be preferentially started includes: comparing the working rate of each candidate air compressor, and screening the minimum working rate in the working rates; and determining the air compressor corresponding to the minimum working rate as a target air compressor which is started preferentially.
With reference to the first aspect, in some embodiments of the present application, the air compressor control method further includes: when a vehicle loaded with a plurality of air compressors arrives at a terminal, acquiring the total operation time of the vehicle and the total operation time of each air compressor; respectively calculating the total working rate corresponding to each air compressor according to the total running time of the vehicle and the total running time of each air compressor; when the total working rate corresponding to any air compressor does not reach a preset working rate threshold value, the air compressors of which the total working rates do not reach the working rate threshold value are started until the total working rates of all the air compressors reach the working rate threshold value.
With reference to the first aspect, in some embodiments of the present application, after starting the air compressor whose total operation rate does not reach the operation rate threshold, the air compressor control method further includes: when the pressure of the air pipe reaches a preset safety valve action threshold value, judging whether the pressure of the air pipe is reduced to the safety threshold value within a preset time period; the safety valve is used for performing pressure relief on the air pipe; and when the pressure of the air pipe does not drop to a safety threshold value within a preset time period, simultaneously closing each air compressor, and generating and sending safety valve fault information.
With reference to the first aspect, in some embodiments of the present application, the air compressor control method further includes: and when the pressure of the air pipe is reduced to a safety threshold value within a preset time period, executing the air compressors of which the starting total working rate does not reach the working rate threshold value until the total working rate of each air compressor reaches the working rate threshold value.
With reference to the first aspect, in some embodiments of the present application, after the pressure of the air duct drops to the safety threshold within a preset time period, the air compressor control method further includes: counting the action times of the safety valve; and when the action times of the safety valve reach a preset action time threshold value, simultaneously closing each air compressor.
According to a second aspect, an embodiment of the present application provides a terminal device, including: the starting and stopping control unit is used for starting at least one air compressor when a vehicle loaded with a plurality of air compressors is started; the pressure acquisition unit is used for acquiring the pressure of air pipes connected with the plurality of air compressors; the starting and stopping control unit is further used for starting or stopping at least one air compressor of the plurality of air compressors according to the pressure of the air pipe, wherein when one air compressor is selected from the plurality of candidate air compressors for starting control, a target air compressor which is started preferentially is determined according to the working rate of each candidate air compressor, and the target air compressor is started; the candidate air compressor is an air compressor in a current stop state, and the working rate of the air compressor is the ratio of the running time of the air compressor to the running time of the vehicle after the vehicle is started.
According to a third aspect, an embodiment of the present application provides a terminal device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the method according to the first aspect or any embodiment of the first aspect when executing the computer program.
According to a fourth aspect, the present application provides a computer-readable storage medium, which stores a computer program, where the computer program is executed by a processor to implement the steps of the method according to the first aspect or any embodiment of the first aspect.
The air compressor control method, the terminal equipment and the storage medium provided by the embodiment of the application only utilize the existing equipment device of the vehicle, no other equipment is additionally added, and the air compressor is controlled to start and stop by calculating the work rate of each air compressor in the vehicle, so that the oil emulsion phenomenon of the air compressor is eliminated.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic implementation flow chart of a specific example of an air compressor control method provided in an embodiment of the present application;
fig. 2 is a schematic implementation flow chart of another specific example of an air compressor control method provided in an embodiment of the present application;
fig. 3 is a schematic diagram of a specific example of a terminal device provided in an embodiment of the present application;
fig. 4 is a schematic diagram of another specific example of a terminal device provided in an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
In order to explain the technical solution described in the present application, the following description will be given by way of specific examples.
The embodiment of the application provides an air compressor control method, and as shown in fig. 1, the air compressor control method can comprise the following steps:
step S101: when the vehicle loaded with the plurality of air compressors is started, at least one air compressor is started.
Step S102: and acquiring the pressure of air pipes connected with the plurality of air compressors.
Step S103: and starting or stopping at least one air compressor in the plurality of air compressors according to the pressure of the air pipe. When it is determined that one air compressor is selected from the multiple candidate air compressors for starting control, a target air compressor which is started preferentially is determined according to the working rate of each candidate air compressor, and the target air compressor is started. The candidate air compressor is the air compressor in the current stop state. The work rate of the air compressor is the ratio of the running time of the air compressor to the running time of the vehicle after the vehicle is started.
Optionally, as shown in fig. 1, after a vehicle loaded with a plurality of air compressors arrives at a terminal, the following steps may be added:
step S104: when a vehicle loaded with a plurality of air compressors arrives at a terminal, the total operation time of the vehicle and the total operation time of each air compressor are obtained.
Step S105: and respectively calculating the total working rate corresponding to each air compressor according to the total running time of the vehicle and the total running time of each air compressor. Specifically, the total operation time of each air compressor can be divided by the total operation time of the vehicle, and each quotient is used as the total work rate of the corresponding air compressor.
Step S106: and judging whether the total working rate corresponding to any air compressor reaches a preset working rate threshold value. When the total working rate corresponding to any air compressor does not reach the preset working rate threshold value, executing the step S107; and when the total working rate corresponding to any air compressor reaches the preset working rate threshold value, ending.
Step S107: and starting the air compressor with the total working rate not reaching the threshold value of the working rate.
Step S108: and judging whether the total working rate corresponding to any air compressor reaches a preset working rate threshold value or not. When the total working rate corresponding to any air compressor does not reach the preset working rate threshold value, returning to execute the step S107; and when the total working rate corresponding to any air compressor reaches the preset working rate threshold value, ending. After the vehicle arrives at the terminal, the air compressors with the total work rate which does not reach the standard can be continuously started, even if the total air pressure of the air pipes reaches the stop threshold value, the air compressors cannot be stopped until the total work rate of each air compressor reaches the work rate threshold value.
In practical application, in order to protect the air duct and the vehicle, the following steps are added after the step S107:
step S109: and judging whether the pressure of the air pipe reaches a preset safety valve action threshold value. When the pressure of the air pipe reaches a preset safety valve action threshold value, executing a step S110; and when the pressure of the air pipe does not reach the preset safety valve action threshold value, returning to execute the step S107.
Step S110: and judging whether the pressure of the air pipe is reduced to a safety threshold value within a preset time period. The safety valve is used for releasing the pressure of the air pipe. When the pressure of the air pipe does not drop to the safety threshold value within the preset time period, executing step S111; when the pressure of the air duct drops to the safety threshold within the preset time period, step S112 is performed.
Step S111: and simultaneously, closing each air compressor, and generating and sending safety valve fault information.
Step S112: and counting the action times of the safety valve, and judging whether the action times of the safety valve reaches a preset action time threshold value. When the action frequency of the safety valve reaches a preset action frequency threshold value, executing a step S113; when the number of times of operation of the safety valve does not reach the preset threshold value of the number of times of operation, the process returns to step S107.
Step S113: and simultaneously, closing each air compressor.
The embodiment of the application counts and arranges actual application data of the vehicle and the air compressor thereof, and finds that the oil emulsification phenomenon of the air compressor can be effectively avoided when the working rate of the air compressor is more than or equal to 30%. In the embodiment of the application, the working rate threshold of the air compressors can be determined to be 30%, and the working time of each air compressor is controlled to enable the working rate of each air compressor to reach the working rate threshold, namely more than 30%, so that the emulsification of the air compressor oil is effectively inhibited. In practical application, the working rate threshold value can be adjusted according to the environment and the actual condition of vehicle operation, so that the aim of better inhibiting the emulsification of the air compressor oil is fulfilled.
In one embodiment, as shown in FIG. 2, control of the air press may be achieved by the following steps:
step S201: when the vehicle loaded with the plurality of air compressors is started, the plurality of air compressors are started simultaneously.
Step S202: and acquiring the pressure of air pipes connected with the plurality of air compressors.
Step S203: and controlling the start and stop of at least one air compressor according to the pressure of the air pipe.
Specifically, as shown in fig. 2, the process of step S203 may be implemented by the following several sub-steps:
step S2031: after the plurality of air compressors are started simultaneously, when the pressure of the air pipe reaches a preset stop threshold value, the plurality of air compressors are closed.
Step S2032: after the air compressors are closed, whether the pressure of the air pipe is reduced to a preset first starting threshold value is judged. When the pressure of the air pipe is reduced to a preset first starting threshold value, executing a step S2033; and when the pressure of the air pipe is not reduced to the preset first starting threshold value, the step S2032 is repeatedly executed, so that the continuous monitoring of the pressure of the air pipe is realized.
Step S2033: and randomly starting any air compressor.
Step S2034: after any air compressor is started randomly, whether the pressure of the air pipe is continuously reduced is judged. When the pressure of the air duct is not continuously reduced, executing step S2035; when the pressure of the air pipe is still continuously reduced, the pressure of the air pipe is continuously monitored, and when the pressure of the air pipe is reduced to a second starting threshold value, all the air compressors are started simultaneously.
Step S2035: and acquiring the working rate of any air compressor which is randomly started, and judging whether the working rate of any air compressor which is randomly started reaches a preset working rate threshold value. When the working rate of any air compressor started randomly reaches a preset working rate threshold value, executing a step S2036; and when the working rate of any randomly started air compressor does not reach the preset working rate threshold value, the step S2035 is repeatedly executed, so that the continuous monitoring of the working rate of the currently running air compressor is realized.
Step S2036: and closing any air compressor which is started randomly, and starting other air compressors. The other air compressors are air compressors except the air compressor which is currently closed.
Step S2037: and after other air compressors are started, judging whether the pressure of the air pipe reaches the preset stop threshold value again. When the pressure of the air pipe reaches the preset stop threshold value again, executing the step S2038; and when the pressure of the air pipe does not reach the preset stop threshold value again, returning to execute the step S2036, so that the currently started air compressor continuously operates until the pressure of the air pipe reaches the preset stop threshold value again.
Step S2038: and turning off each air compressor. After the pressure of the air pipe reaches the preset stop threshold value again, in order to avoid further increasing the pressure of the air pipe, all the air compressors can be closed.
Step S204: and after the pressure of the air pipe reaches the preset stop threshold value again and each air compressor is closed, comparing the working rate of each candidate air compressor, and screening the minimum working rate in the working rates.
Step S205: and determining the air compressor corresponding to the minimum working rate as a target air compressor which is started preferentially.
It should be noted that, when the vehicle performs start-stop control on each air compressor according to the air compressor control method shown in fig. 2, after the vehicle reaches the terminal, step S205 is followed by further increasing step S104 to step S113 shown in fig. 1, so that the total operating rate of each air compressor in the vehicle reaches the operating rate threshold, and the problem of oil emulsification of the air compressor is avoided.
As an example, the air compressor control method provided in the embodiment of the present application may be described in an example in which six subway vehicles are grouped and two air compressors are configured. The normal working pressure of the total wind of the wind pipe in the vehicle is 750kPa to 900 kPa; when the total air pressure is lower than 750kpa, starting a first air compressor; when the total air pressure is lower than 700kpa, the two air compressors are started simultaneously; when the total wind pressure reaches 900kpa, stopping all air compressors; when the total air pressure reaches 1050kpa, the safety valve is opened to exhaust the air pipe of the vehicle, and the air pipe pressure needs to be rapidly reduced to a normal range within 2 s.
The vehicle control system monitors the total wind pressure change of the wind pipe in the vehicle in real time through the pressure sensor and is used for controlling the start and stop of the air compressor, meanwhile, the performance of the safety valve can be judged through the rapid change of the pressure, the fault of the safety valve can be found in time, and therefore the fault safety valve can be maintained in time.
After the vehicle is initially started, the vehicle control system first collects the number n of air compressors in the train as 2. In the initial state, the total wind pressure is generally lower than 700kpa, and the vehicle control system controls the two air compressors to be started simultaneously, so that the total wind pressure can reach 900kpa quickly. Simultaneously, the vehicle control system records the working time t of the two air compressorsn-1(ii) a When the total wind pressure reaches 900kpa, all air compressors stop, and the vehicle control system starts to record the shutdown time t of the air compressorsn-2. When the total wind pressure of the vehicle is reduced to 750kpa, the first air compressor M1 can be randomly started. According to the working time tn-1And tn-2And the current working rate s1 of the air compressor M1 can be obtained. Simultaneously, the running time t of the air compressor M1 is started1-3And the air compressor M2 stops for a time t2-2。
The vehicle control system monitors the total wind pressure, and if the pressure value reaches 900kpa, the air compressor M1 is stopped; if the pressure does not reach 900kpa, continuously monitoring whether the pressure is continuously reduced to 700kpa, and if the pressure is reduced to 700kpa, controlling the two air chambersThe press is started simultaneously, so that the total wind pressure can reach 900kpa quickly; if the pressure is continuously rising, the train control system compares a preset working rate threshold value s (for example, 30%) with the working rate s1 of the current air compressor M1 in real time. If s1 is less than s, the air compressor M1 continues to work until the total wind pressure reaches 900 kpa; if s1 is more than or equal to s, stopping the air compressor M1, starting the second air compressor M2, and simultaneously carrying out operation timing t on the air compressor M22-3Until the total wind pressure reaches 900 kpa. At the moment, the air compressor M2 stops, and the train control system starts to record the stop time t of the two air compressorsn-3And working rates s1 and s2 of the current air compressors M1 and M2 are calculated according to the running and stopping time of the two air compressors, and meanwhile, the current working rates s1 and s2 are compared, and the air compressor with the small working rate is taken as the optimal air compressor for the next starting. And subsequently, according to the real-time change of the total air pressure, the two air compressors are controlled and started by adopting the logic so as to ensure that the working rate of the two air compressors is more than or equal to a working rate threshold value s. And if the working rate of the air compressor does not reach the working rate threshold value s, after the vehicle reaches the terminal station, the vehicle control system forces the air compressor with the working rate which does not reach the standard to start.
Specifically, after the vehicle arrives at the terminal, the train control system calculates the total operating rates s1 and s2 of the air compressor M1 and the air compressor M2. If the total work rates s1 and s2 are both larger than or equal to the work rate threshold s (for example, 30%), the control logic ends; and if the value of the total working rate s1 and/or the total working rate s2 is smaller than the working rate threshold value s (for example, 30%), controlling the corresponding air compressor to start and operate, and even if the total wind pressure reaches 900kpa, the air compressor which needs to be started continuously does not stop. In addition, the vehicle control system monitors the pressure sensor in the air pipe in real time, when the total air pressure reaches 1050kpa, the safety valve can act rapidly, and the pressure can drop rapidly within 2 s; if the pressure does not drop but continues to rise, the train control system stops the operation of all air compressors and reports the failure of the safety valve. If the safety valve is normal, all the air compressors are stopped no matter whether the working rate of the air compressors reaches the working rate threshold value s (for example, 30%) or not after the safety valve acts for 2 times. And after the train arrives at the terminal station next time, the air compressor is continuously controlled by adopting the logic.
The control method of the air compressor provided by the embodiment of the application only utilizes the existing equipment of the vehicle, does not additionally increase other equipment, and controls the starting and stopping of the air compressor by calculating the work rate of each air compressor in the vehicle, so that the oil emulsification phenomenon of the air compressor is eliminated. In addition, the control method of the air compressor provided by the embodiment of the application also carries out online closed-loop detection on the performance of the safety valve, so that the manual maintenance cost is saved.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
An embodiment of the present application provides a terminal device, as shown in fig. 3, the terminal device may include: a start-stop control unit 301 and a pressure acquisition unit 302.
When a vehicle loaded with a plurality of air compressors is started, the start-stop control unit 301 is used for starting at least one air compressor; the corresponding working process can be referred to as step S101 in the above method embodiment.
The pressure acquisition unit 302 is used for acquiring the pressure of air pipes connected with a plurality of air compressors; the corresponding working process can be referred to step S102 in the above method embodiment.
The start-stop control unit 301 is further configured to perform start-up or stop control on at least one air compressor of the plurality of air compressors according to the pressure of the air duct, wherein when it is determined that one air compressor is selected from the plurality of candidate air compressors for start-up control, a target air compressor to be started up preferentially is determined according to the work rate of each candidate air compressor, and the target air compressor is started up; the candidate air compressor is an air compressor in a current stop state, and the working rate of the air compressor is the ratio of the running time of the air compressor to the running time of the vehicle after the vehicle is started; the corresponding working process can be referred to step S103 in the above method embodiment.
The start-stop control unit 301 may further continue to perform start-stop control on each air compressor by executing steps S104 to S113 in the above-described method embodiment after the vehicle reaches the terminal.
Fig. 4 is a schematic diagram of another terminal device provided in an embodiment of the present application. As shown in fig. 4, the terminal device 600 of this embodiment includes: a processor 601, a memory 602, and a computer program 603, such as an air compressor control method program, stored in the memory 602 and executable on the processor 601. The processor 601, when executing the computer program 603, implements the steps in the above-described embodiments of the air compressor control method, such as the steps 101 to 104 shown in fig. 1. Alternatively, the processor 601, when executing the computer program 603, implements the functions of each module/unit in each apparatus embodiment described above, for example, the functions of the start-stop control unit 301 and the pressure acquisition unit 302 shown in fig. 3.
The computer program 603 may be partitioned into one or more modules/units that are stored in the memory 602 and executed by the processor 601 to complete the present application. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution process of the computer program 603 in the terminal device 600. For example, the computer program 603 may be partitioned into a synchronization module, a summarization module, an acquisition module, a return module (a module in a virtual device).
The terminal device 600 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The terminal device may include, but is not limited to, a processor 601, a memory 602. Those skilled in the art will appreciate that fig. 4 is merely an example of a terminal device 600 and does not constitute a limitation of terminal device 600 and may include more or fewer components than shown, or some components may be combined, or different components, e.g., the terminal device may also include input-output devices, network access devices, buses, etc.
The Processor 601 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 602 may be an internal storage unit of the terminal device 600, such as a hard disk or a memory of the terminal device 600. The memory 602 may also be an external storage device of the terminal device 600, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the terminal device 600. Further, the memory 602 may also include both an internal storage unit and an external storage device of the terminal device 600. The memory 602 is used for storing the computer programs and other programs and data required by the terminal device. The memory 602 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method of the embodiments described above can be realized by a computer program, which can be stored in a computer-readable storage medium and can realize the steps of the embodiments of the methods described above when the computer program is executed by a processor. . Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (9)
1. A control method of an air compressor is characterized by comprising the following steps:
when a vehicle loaded with a plurality of air compressors is started, starting at least one air compressor;
acquiring the pressure of air pipes connected with the plurality of air compressors;
starting or stopping at least one air compressor of the plurality of air compressors according to the pressure of the air pipe, wherein when the air compressor is selected from the plurality of candidate air compressors for starting control, a target air compressor which is started preferentially is determined according to the working rate of each candidate air compressor, and the target air compressor is started; the candidate air compressor is an air compressor in a current stop state, and the working rate of the air compressor is the ratio of the running time of the air compressor to the running time of the vehicle after the vehicle is started;
the air compressor control method further includes:
when a vehicle loaded with a plurality of air compressors arrives at a terminal, acquiring the total operation time of the vehicle and the total operation time of each air compressor;
respectively calculating the total working rate corresponding to each air compressor according to the total running time of the vehicle and the total running time of each air compressor;
when the total working rate corresponding to any air compressor does not reach a preset working rate threshold value, the air compressors of which the total working rates do not reach the working rate threshold value are started until the total working rates of all the air compressors reach the working rate threshold value.
2. The air compressor control method of claim 1, wherein when a vehicle equipped with a plurality of air compressors is started, if the plurality of air compressors are started simultaneously, the start and stop control of the at least one air compressor according to the pressure of the air duct comprises:
after the plurality of air compressors are started simultaneously, when the pressure of the air pipe reaches a preset stop threshold value, the plurality of air compressors are closed;
after the plurality of air compressors are closed, when the pressure of the air pipe is reduced to a preset first starting threshold value, randomly starting any one of the air compressors;
after any air compressor is randomly started, when the pressure of the air pipe is not continuously reduced, the working rate of any randomly started air compressor is obtained;
when the working rate of any one air compressor which is randomly started reaches a preset working rate threshold value, any one air compressor which is randomly started is closed, and other air compressors are started, wherein the other air compressors are air compressors except the air compressor which is currently closed;
and after other air compressors are started, when the pressure of the air pipe reaches a preset stop threshold value again, closing each air compressor.
3. The air compressor control method according to claim 1, wherein the determining of the target air compressor to be activated preferentially according to the operation rate of each candidate air compressor includes:
comparing the working rate of each candidate air compressor, and screening the minimum working rate in the working rates;
and determining the air compressor corresponding to the minimum working rate as a target air compressor which is started preferentially.
4. The air compressor control method according to claim 1, wherein after starting the air compressor whose total operation rate does not reach the operation rate threshold, the air compressor control method further includes:
when the pressure of the air pipe reaches a preset safety valve action threshold value, judging whether the pressure of the air pipe is reduced to the safety threshold value within a preset time period; the safety valve is used for performing pressure relief on the air pipe;
and when the pressure of the air pipe does not drop to a safety threshold value within a preset time period, simultaneously closing each air compressor, and generating and sending safety valve fault information.
5. The air compressor control method according to claim 4, further comprising:
and when the pressure of the air pipe is reduced to a safety threshold value within a preset time period, executing the air compressors of which the starting total working rate does not reach the working rate threshold value until the total working rate of each air compressor reaches the working rate threshold value.
6. The air compressor control method according to claim 5, wherein after the pressure of the air duct drops to a safety threshold within a preset time period, the air compressor control method further comprises:
counting the action times of the safety valve;
and when the action times of the safety valve reach a preset action time threshold value, simultaneously closing each air compressor.
7. A terminal device, comprising:
the starting and stopping control unit is used for starting at least one air compressor when a vehicle loaded with a plurality of air compressors is started;
the pressure acquisition unit is used for acquiring the pressure of air pipes connected with the plurality of air compressors;
the starting and stopping control unit is further used for starting or stopping at least one air compressor of the plurality of air compressors according to the pressure of the air pipe, wherein when one air compressor is selected from the plurality of candidate air compressors for starting control, a target air compressor which is started preferentially is determined according to the working rate of each candidate air compressor, and the target air compressor is started; the candidate air compressor is an air compressor in a current stop state, and the working rate of the air compressor is the ratio of the running time of the air compressor to the running time of the vehicle after the vehicle is started;
the start-stop control unit is also used for acquiring the total running time of the vehicle and the total running time of each air compressor when the vehicle loaded with the plurality of air compressors arrives at a terminal; respectively calculating the total working rate corresponding to each air compressor according to the total running time of the vehicle and the total running time of each air compressor; when the total working rate corresponding to any air compressor does not reach a preset working rate threshold value, the air compressors of which the total working rates do not reach the working rate threshold value are started until the total working rates of all the air compressors reach the working rate threshold value.
8. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any of claims 1 to 6 when executing the computer program.
9. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 6.
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| CN112721978A (en) * | 2021-01-15 | 2021-04-30 | 中车青岛四方机车车辆股份有限公司 | Main air supply unit control method and related equipment thereof |
| CN112879266B (en) * | 2021-02-08 | 2022-07-19 | 中车株洲电力机车有限公司 | Urban rail vehicle compressor control method and system |
| CN113123957A (en) * | 2021-04-09 | 2021-07-16 | 潍柴动力股份有限公司 | Vehicle and air compressor load rate calculation system and method |
| CN114412765B (en) * | 2021-12-24 | 2023-11-14 | 中山市艾能机械有限公司 | Air compressor combined control method, system and storage medium |
| WO2023179054A1 (en) * | 2022-03-22 | 2023-09-28 | 中车株洲电力机车有限公司 | Coupled train and air compressor start-stop control method and system therefor |
| CN117092943B (en) * | 2023-06-29 | 2024-07-19 | 深圳米飞泰克科技股份有限公司 | Control method, control device, terminal equipment and computer readable storage medium |
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