Air channel protection and logic protection device and method for air compressor

Abstract

The invention relates to the field of power concentration motor train units, and provides an air compressor air path protection and logic protection device and method, an air path outlet of a first air compressor is connected with a first one-way valve, and an air path outlet of a second air compressor is connected with a second one-way valve; the first air compressor high-temperature protection switch, the first air compressor high-pressure protection switch, the second air compressor high-temperature protection switch and the second air compressor high-pressure protection switch are connected to a motor vehicle microcomputer in parallel through circuits. According to the invention, gas circuit protection and microcomputer control protection are used for double protection in the aspects of circuits and gas circuits, so that the fault range is reduced to the minimum in time; the fault occurrence probability is reduced by using different logic measures; secondary disasters caused by faults of the air compressor are reduced through logic protection; finally, the redundant function of the air compressor is fully played, and the influence on application after the air compressor breaks down is reduced to the maximum extent.

Description

Technical Field

[0001] The present invention relates to the field of power centralized EMUs, and in particular to an air compressor gas circuit protection and logic protection device and method. Background Art The power-concentrated EMU (hereinafter referred to as EMU) is equipped with an air compressor to generate compressed air for the brake control system and auxiliary air equipment. There are two types of EMU marshaling: long marshaling and short marshaling. The vehicles at both ends of the long marshaling are power vehicles, and the vehicles at both ends of the short marshaling are power vehicles and control vehicles. In the marshaling, only the power vehicle is equipped with an air compressor and each power vehicle is equipped with 2 air compressors.

[0002] Under normal operating conditions, the air compressors in the train work together to provide compressed air. However, some compressors will always fail during the operation of the EMU. At this time, it is of great significance to minimize the impact of the failure and fully realize the redundancy of the air compressors.

[0003] Each locomotive of the existing power train is equipped with two air compressors. The outlets of the air compressors are connected together, and then connected to the compressed air filtration system, which supplies the compressed air to the EMU after filtration. The air compressor is equipped with high temperature and high pressure protection signals, which are output in series to the microcomputer system. When the microcomputer system receives the protection signal, it executes the fault protection logic.

[0004] The existing fault protection control logic is that when the compressor high temperature and high pressure protection signal is received, the microcomputer system will make the compressor enter the delay mode. The so-called delay mode is to control the air compressor to enter the internal circulation, not output compressed air but the oil circulation continues, and the oil circulation is used to dissipate heat and maintain the oil temperature to reduce emulsification.

[0005] However, the non-return function of the air path between air compressors depends on the air compressor itself. When the non-return function of the air compressor itself fails, it will affect the functioning of another air compressor. The high-temperature and high-pressure protection signals of the air compressor are not distinguished, and the signals are connected in series. When the air compressor fails, it is impossible to accurately judge; after the air compressor sends a protection signal, the existing control logic will not make the air compressor stop working immediately, but enter the delay mode. Although this logic can alleviate the impact of high temperature, it cannot avoid hardware damage caused by extreme conditions. For example, overheating is caused by rotor wear. When the rotor is worn, a large amount of heat will be generated. If it is not stopped immediately at this time, more serious consequences will occur; after the air compressor fails, there is no logical disposal, only to reduce the work of the failed air compressor, which is likely to cause repeated failures of the air compressor. Summary of the invention

[0006] Based on the above purpose, the present invention proposes an air compressor gas circuit protection and logic protection device, including: a first air compressor, a second air compressor, a first air compressor high temperature protection switch, a first air compressor high pressure protection switch, a second air compressor high temperature protection switch, a second air compressor high pressure protection switch, a power car microcomputer, a first check valve, and a second check valve; A first one-way valve is connected to the gas outlet of the first air compressor, and a second one-way valve is connected to the gas outlet of the second air compressor; The first air compressor high temperature protection switch, the first air compressor high pressure protection switch, the second air compressor high temperature protection switch and the second air compressor high pressure protection switch are connected in parallel to the power vehicle microcomputer through a circuit.

[0007] In some embodiments, it also includes a power vehicle auxiliary power supply, a first air compressor motor power supply air switch, a second air compressor motor power supply air switch, a power vehicle control power supply, a first air compressor control power supply air switch, and a second air compressor control power supply air switch; The output end of the auxiliary power supply of the power vehicle is respectively connected to one end of the first air compressor motor power supply air switch and the second air compressor motor power supply air switch; The other end of the first air compressor motor power supply air switch is connected to the first air compressor; The other end of the second air compressor motor power supply air switch is connected to the second air compressor.

[0008] In some embodiments, it also includes a power vehicle control power supply, a first air compressor control power supply air switch, and a second air compressor control power supply air switch; The power vehicle control power supply is respectively connected to one end of the first air compressor control power supply air switch and the second air compressor control power supply air switch; The other end of the first air compressor control power supply air switch is connected to the first air compressor high temperature protection switch and the first air compressor high pressure protection switch; The other end of the second air compressor control power supply air switch is connected to the second air compressor high temperature protection switch and the second air compressor high pressure protection switch.

[0009] In some embodiments, it further includes a compressed air filtration system, a total air pressure sensor, a first total air cylinder, a second total air cylinder, a third one-way valve, an air-using device, and a brake air-using device; One end of the compressed air filtration system is connected to the first one-way valve and the second one-way valve, and the other end is connected to the first main air cylinder; One end of the second main air cylinder is connected to the brake air equipment, and the other end is connected to the total air pressure sensor; The first main air cylinder and the second main air cylinder are connected to the air-using equipment, and a third one-way valve is arranged between the second main air cylinder and the air-using equipment.

[0010] The present invention proposes a method for controlling an air compressor using the air circuit protection and logic protection device, comprising: The power vehicle microcomputer receives an air compressor protection signal; Control the corresponding first air compressor high temperature protection switch, first air compressor high pressure protection switch, second air compressor high temperature protection switch or second air compressor high pressure protection switch; adjusting the first air compressor or the second air compressor to enter a fault mode; Determine whether to allow restart based on the preset reset conditions.

[0011] In some embodiments, the method further includes: in response to the failure mode being high temperature protection, The power car microcomputer enters an air compressor enhanced heat dissipation mode; Increase the minimum pressure value for starting the failed compressor.

[0012] In some embodiments, the method further includes: in response to the failure mode being high voltage protection, The power vehicle microcomputer enters the air compressor delayed start mode; Control the restart interval of the faulty compressor from the last shutdown to the current startup to be extended to 20s; Increase the minimum pressure value for starting the failed compressor.

[0013] In some embodiments, in response to the failure mode being high temperature and high voltage protection, The power vehicle microcomputer simultaneously enters the air compressor enhanced heat dissipation mode and the air compressor delayed start mode; Increase the minimum pressure value for starting a faulty compressor; The restart interval time of the faulty compressor from the last shutdown to the current startup is forcibly extended to 20s.

[0014] In some embodiments, the step of determining whether to allow restarting according to a preset reset condition includes: When the signal is reset, restart is allowed; If a faulty air compressor gives off a high temperature protection signal more than three times within 60 minutes, it will not be allowed to start again.

[0015] In some embodiments, the preset reset condition includes: After manually disconnecting the faulty first air compressor motor power supply air switch, the second air compressor motor power supply air switch, the first air compressor control power supply air switch or the second air compressor control power supply air switch, the first air compressor control power supply air switch or the second air compressor control power supply air switch is closed again, and the power vehicle microcomputer does not receive an air compressor protection signal, reset; and In the air compressor enhanced cooling mode and the air compressor delayed start mode, the power car in the EMU is reset when the power is cut off.

[0016] The present invention proposes an air compressor air circuit protection and logic protection device and method, the device comprising: connecting a first one-way valve to the air circuit outlet of the first air compressor, and connecting a second one-way valve to the air circuit outlet of the second air compressor; connecting the first air compressor high-temperature protection switch, the first air compressor high-pressure protection switch, the second air compressor high-temperature protection switch and the second air compressor high-pressure protection switch in parallel to a power vehicle microcomputer through a circuit.

[0017] The method includes: the power vehicle microcomputer receives an air compressor protection signal; controls the corresponding first air compressor high temperature protection switch, the first air compressor high pressure protection switch, the second air compressor high temperature protection switch or the second air compressor high pressure protection switch; adjusts the first air compressor or the second air compressor to enter a fault mode; and determines whether to allow restarting according to a preset reset condition.

[0018] The present invention utilizes air circuit protection and microcomputer control protection to timely minimize the scope of faults in terms of circuits and air circuits; utilizes different logical measures to reduce the probability of faults; utilizes logical protection to reduce secondary disasters caused by air compressor failures; and the ultimate goal is to give full play to the redundancy of air compressors and minimize the impact of air compressor failures on operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A module diagram of a device for air compressor gas circuit protection and logic protection provided by the present invention; Figure 2 A flow chart of a method for air circuit protection and logic protection of an air compressor provided by the present invention; Figure 3A logic block diagram of air compressor control mode switching according to an embodiment of a method for air compressor gas circuit protection and logic protection provided by the present invention; Figure 4 A schematic diagram of the structure of an embodiment of a computer device provided by the present invention; Figure 5 A schematic diagram of the structure of an embodiment of a computer-readable storage medium provided by the present invention.

[0021] Among them, 1. The first air compressor; 2. The second air compressor; 3. The high temperature protection switch of the first air compressor; 4. The high pressure protection switch of the first air compressor; 5. The high temperature protection switch of the second air compressor; 6. The high pressure protection switch of the second air compressor; 7. The total air pressure sensor; 8. The power car microcomputer; 9. The power car auxiliary power supply; 10. The first air compressor motor power supply air switch; 11. The second air compressor motor power supply air switch; 12. The power car control power supply; 13. The first air compressor control power supply air switch; 14. The second air compressor control power supply air switch; 15. The compressed air filtration system; 16. The first main air cylinder; 17. The second main air cylinder; 18. The third one-way valve; 19. The air-using equipment; 20. The brake air-using equipment; 21. The first one-way valve; 22. The second one-way valve. DETAILED DESCRIPTION

[0022] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0023] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0024] The present invention proposes a device for air compressor gas circuit protection and logic protection, please refer to Figure 1 , including: a first air compressor 1, a second air compressor 2, a first air compressor high temperature protection switch 3, a first air compressor high pressure protection switch 4, a second air compressor high temperature protection switch 5, a second air compressor high pressure protection switch 6, a power car microcomputer 8, a first one-way valve 21, and a second one-way valve 22; A first one-way valve 21 is connected to the gas outlet of the first air compressor 1, and a second one-way valve 22 is connected to the gas outlet of the second air compressor 2; The first air compressor high temperature protection switch 3, the first air compressor high pressure protection switch 4, the second air compressor high temperature protection switch 5 and the second air compressor high pressure protection switch 6 are connected in parallel to the power vehicle microcomputer 5 through a circuit.

[0025] A device is added at each air compressor outlet to serve as a non-return backup valve to isolate the two air compressors; specifically, two one-way valves are added at each air compressor outlet, so that the compressed air first passes through the one-way valve after flowing out of the air compressor and then is collected together to flow to the compressed air filtration system; The compressor high temperature and high pressure protection signals are divided into two paths and transmitted to the microcomputer network system, so as to facilitate different logical treatments for different faults in the future; specifically, the high temperature and high pressure protection signals of the air compressor are not connected in series in the circuit, but are connected to the network system separately. The network system can use them as the basis for accurate display of faults and subsequently enter different fault modes for different protection signals.

[0026] The present invention adopts an external non-return mechanism as a non-return backup between air compressors, thereby improving the redundancy and reliability of the use of air compressors and indirectly improving the service life of the non-return components of the air compressors; the protection signals of the air compressors are distinguished, which facilitates accurate feedback of the fault status of the air compressors during use, and reduces the difficulty of troubleshooting for subsequent emergency disposal and inspection and maintenance.

[0027] In some embodiments, see Figure 1 , further comprising a power vehicle auxiliary power supply 9, a first air compressor motor power supply air switch 10, a second air compressor motor power supply air switch 11, a power vehicle control power supply 12, a first air compressor control power supply air switch 13, and a second air compressor control power supply air switch 14; The output end of the power vehicle auxiliary power supply 9 is respectively connected to one end of the first air compressor motor power supply air switch 10 and the second air compressor motor power supply air switch 11; The other end of the first air compressor motor power supply air switch 10 is connected to the first air compressor 1; The other end of the second air compressor motor power supply air switch 11 is connected to the second air compressor 2; By separately setting air switches, the first air compressor 1 and the second air compressor 2 can be independently controlled, and one of the air compressors can be started or shut down separately without affecting the normal operation of the other. As a circuit protection device, the air switch can quickly cut off the power supply when a circuit overload, short circuit or other fault occurs, thereby protecting the circuit and equipment from damage and improving the safety of the entire power vehicle system.

[0028] When more air compressors need to be added, only the corresponding air switches and connecting lines need to be added without large-scale modifications.

[0029] In some embodiments, see Figure 1 , further comprising a power vehicle control power supply 12, a first air compressor control power supply air switch 13, and a second air compressor control power supply air switch 14; The power vehicle control power supply 12 is respectively connected to one end of the first air compressor control power supply air switch 13 and the second air compressor control power supply air switch 14; The other end of the first air compressor control power supply air switch 13 is connected to the first air compressor high temperature protection switch 3 and the first air compressor high pressure protection switch 4; The other end of the second air compressor control power supply air switch 14 is connected to the second air compressor high temperature protection switch 5 and the second air compressor high pressure protection switch 6 .

[0030] When the air compressor is running in a high temperature environment, it may be damaged due to overheating. By setting a high temperature protection switch, the power supply can be automatically cut off when the compressor temperature is too high, thereby preventing the compressor from being damaged due to overheating and improving the safety of the system.

[0031] When the compressor is running under high pressure, it may cause equipment failure or damage due to excessive pressure. The high-pressure protection switch can quickly cut off the power supply when high-pressure abnormality is detected, protecting the compressor and related equipment from damage, further improving the safety of the system.

[0032] By setting a high temperature and high pressure protection switch, timely measures can be taken before the compressor fails to avoid the occurrence of failure, which helps to improve the stability of the entire power vehicle system and reduce system downtime caused by compressor failure.

[0033] In some embodiments, see Figure 1 , further comprising a compressed air filtration system 15, a total air pressure sensor 7, a first total air cylinder 16, a second total air cylinder 17, a third non-return valve 18, an air-using device 19 and a brake air-using device 20; One end of the compressed air filtration system 15 is connected to the first one-way valve 21 and the second one-way valve 22, and the other end is connected to the first main air cylinder 16; One end of the second main air cylinder 17 is connected to the brake air device 20, and the other end is connected to the total air pressure sensor 7; The first main air cylinder 16 and the second main air cylinder 17 are connected to an air-using device 19 , and a third one-way valve 18 is provided between the second main air cylinder 17 and the air-using device 19 .

[0034] The third one-way valve 18 allows compressed air to flow in one direction only, effectively preventing the backflow of air in the pipeline, avoiding equipment damage and energy waste caused by backflow. It can prevent the backflow of air caused by the pressure drop in the system when the filter is removed or replaced, protecting the compressor from damage.

[0035] The first main air cylinder 16 and the second main air cylinder 17 are responsible for storing the compressed air provided by the compressed air system, ensuring that sufficient compressed air can be quickly provided to the air-using equipment 19 and the brake air-using equipment 20 when needed. This allows the compressed air to be flexibly distributed to different air-using equipment and brake air-using equipment, meeting the compressed air needs of different equipment.

[0036] The present invention proposes a method for controlling the air compressor gas circuit protection and logic protection device, please refer to Figure 2 and Figure 3 ,include: The power car microcomputer 8 receives an air compressor protection signal; Control the corresponding first air compressor high temperature protection switch 3, first air compressor high pressure protection switch 4, second air compressor high temperature protection switch 5 or second air compressor high pressure protection switch 6; Adjusting the first air compressor 1 or the second air compressor 2 to enter a fault mode; Determine whether to allow restart based on the preset reset conditions.

[0037] The present invention adds high-temperature protection latch logic, which is beneficial to protecting the compressor hardware from further damage and increasing the service life of the compressor; it automatically handles the compressor failure without human intervention, makes logical adjustments to the failure, effectively avoids the recurrence and further expansion of the failure, and reduces the impact on the operation of the EMU.

[0038] The present invention innovatively introduces high-temperature protection latching logic. This design significantly optimizes the protection mechanism of the compressor in multiple dimensions, ensuring that the compressor hardware can be protected from further damage under extreme working conditions, thereby greatly extending the service life of the compressor. Specifically, the high-temperature protection latching logic can monitor the operating temperature of the compressor in real time. Once the temperature rises abnormally and reaches the preset threshold, the logic will be triggered immediately, automatically cutting off the power supply of the compressor or adjusting its working state, effectively preventing hardware damage caused by high temperature, and further improving the overall efficiency of the EMU operation. Since compressor failures can be automatically handled, the need for manual intervention is reduced, thereby reducing maintenance costs and time costs. At the same time, by reducing the impact of failures on the operation of the EMU, the logic also indirectly improves the reliability and availability of the EMU, providing passengers with a more comfortable and convenient travel experience.

[0039] In some embodiments, see Figure 2 and Figure 3 , further including, in response to the failure mode being high temperature protection, then The power car microcomputer 8 enters the air compressor enhanced heat dissipation mode; Increase the minimum pressure value for starting the failed compressor.

[0040] When the air compressor is protected from high temperature, the microcomputer enters the air compressor enhanced heat dissipation mode. In this mode, when the air compressor is working, the ventilation and heat dissipation between the machines is enhanced to ensure sufficient cooling air volume. When one of the air compressors cannot work, the minimum starting pressure of the air compressor is increased from 750kPa to 800kPa. The total air pressure is collected through the total air pressure sensor, and the air compressor is started in advance to avoid the inability to meet the air demand due to the reduction of air supply capacity after the pressure is excessively reduced.

[0041] Strengthening ventilation and heat dissipation can increase the air flow rate and accelerate the heat dissipation on the surface and inside of the compressor, thereby reducing the operating temperature of the compressor. A good ventilation environment can ensure that the radiator's fins are fully exposed to the flowing air, improve the heat dissipation efficiency, and help the compressor quickly return to normal operating temperature. By reducing the operating temperature of the compressor, various faults caused by high temperature can be reduced, such as motor overheating, lubricant failure, etc., thereby improving the reliability and stability of the compressor.

[0042] After the compressor high temperature protection is triggered, strengthening ventilation and heat dissipation can quickly restore the normal working state of the compressor, reduce the interruption time of the EMU operation caused by fault shutdown, and help maintain the normal operation of the EMU's braking system and pneumatic equipment, thereby improving the safety of the EMU.

[0043] In some embodiments, see Figure 2 and Figure 3 , also includes, in response to the failure mode being high voltage protection, then The power vehicle microcomputer 8 enters the air compressor delayed start mode; Control the restart interval of the faulty compressor from the last shutdown to the current startup to be extended to 20s; Increase the minimum pressure value for starting the failed compressor.

[0044] When the air compressor is under high pressure protection, the microcomputer enters the air compressor delayed start mode. In this mode, the start interval time of the faulty compressor from the last shutdown to the current start is forcibly extended to 20s, giving the faulty air compressor sufficient pressure relief time, and increasing the minimum pressure value for air compressor startup from 750kPa to 800kPa. The total air pressure is collected by the total air pressure sensor.

[0045] The triggering of high pressure protection usually means that the internal pressure of the compressor is abnormally high, which may be caused by a variety of reasons, such as system blockage, poor exhaust or excessive load. Delayed start can provide a buffer period for the compressor to prevent further shock and damage caused by immediate restart under high pressure. Through delayed start, the compressor has sufficient time to perform operations such as cooling, oil return and exhaust, thereby reducing the failure rate caused by high pressure and extending the service life of the compressor.

[0046] Delayed start can reduce the pressure fluctuations generated when the compressor restarts, allowing the system pressure to gradually return to normal levels, helping to maintain stable system operation. By avoiding immediate restart of the compressor under high pressure, delayed start can improve the reliability of the entire system and reduce system downtime caused by compressor failure.

[0047] Delayed start can avoid frequent starting and stopping of the compressor under high pressure, thereby reducing energy waste and improving energy efficiency. By optimizing the compressor's startup strategy, delayed start can reduce the compressor's operating costs. In some embodiments, see Figure 2 and Figure 3 , in response to the failure mode being high temperature and high voltage protection, then The power vehicle microcomputer 8 simultaneously enters the air compressor enhanced heat dissipation mode and the air compressor delayed start mode; Increase the minimum pressure value for starting a faulty compressor; The restart interval time of the faulty compressor from the last shutdown to the current startup is forcibly extended to 20s.

[0048] When the air compressor has high temperature and high pressure protection, the microcomputer enters the air compressor enhanced heat dissipation mode and the air compressor delayed start mode at the same time. At this time, the minimum start pressure value of the air compressor is increased from 750kPa to 800kPa. The total wind pressure is collected by the total wind pressure sensor, and it has the functions of enhanced heat dissipation and delayed start. The exit and reset conditions of the air compressor enhanced heat dissipation mode and the air compressor delayed start mode are reset when the power car in the EMU is powered off.

[0049] The high temperature and high pressure protection mechanisms work together to significantly improve the reliability of the air compressor system, reduce failures and downtime, and ensure the stable operation of the system. By reducing failures and downtime, high temperature and high pressure protection helps to improve user satisfaction and trust in the air compressor system. By optimizing energy efficiency and reducing failures, high temperature and high pressure protection helps to reduce energy consumption and emissions.

[0050] In some embodiments, see Figure 2 and Figure 3The steps of judging whether to allow restarting according to the preset reset conditions include: When the signal is reset, restart is allowed; If a faulty air compressor gives off a high temperature protection signal more than three times within 60 minutes, it will not be allowed to start again.

[0051] When the air compressor protection signal is received, the air compressor stops working immediately. When the signal is reset, it is allowed to start again. The fault accumulation latch protection logic is added. When the protection signal appears repeatedly within a certain period of time, the fault is locked. The faulty air compressor is prohibited from starting before the reset condition is met. The details are as follows: upon receiving the air compressor protection signal, the air compressor that sent the protection signal will be stopped immediately. It will be allowed to start again after the signal is reset. If the air compressor has a high temperature protection signal for more than three times within 60 minutes, the air compressor will not be allowed to start again. The reset condition is: manually disconnect the air switch of the faulty air compressor motor or the air switch of the faulty air compressor control power supply, then close the air switch again and the protection signal will no longer be triggered at this time; The high temperature protection signal is an important indicator of compressor overheating. When the compressor triggers the high temperature protection multiple times in a short period of time, it indicates that there may be a serious overheating problem inside it. At this time, prohibiting the compressor from starting again can effectively prevent it from further damage due to overheating. By preventing the compressor from continuing to operate in an overheated state, it helps to reduce wear and aging of internal components, thereby extending the overall service life of the compressor. Prohibiting the compressor from starting again after triggering the high temperature protection multiple times in a short period of time can avoid system performance degradation caused by frequent shutdowns. This helps maintain system stability and reliability.

[0052] In some embodiments, see Figure 2 and Figure 3 , the preset reset condition includes: After manually disconnecting the faulty first air compressor motor power supply air switch 10, the second air compressor motor power supply air switch 11, the first air compressor control power supply air switch 13 or the second air compressor control power supply air switch 14, the first air compressor control power supply air switch 13 or the second air compressor control power supply air switch 14 is closed again, and the power vehicle microcomputer 8 does not receive the air compressor protection signal, reset; and In the air compressor enhanced cooling mode and the air compressor delayed start mode, the power car in the EMU is reset when the power is cut off.

[0053] Enhanced heat dissipation mode helps reduce the operating temperature of the compressor by optimizing the heat dissipation system and improving heat dissipation efficiency. This not only extends the service life of the compressor, but also reduces failures and downtime caused by high temperature. Delayed start mode allows the compressor to have a certain buffer time after power failure before restarting. This helps reduce the impact and wear on the compressor caused by sudden start and extend its service life. Power-off reset of the power car can clear the fault information in the system and restore the normal operation of the system. This is essential to ensure the overall performance and safety of the EMU. Eliminate the risk of misoperation caused by improper operation or system failure. This helps to ensure that there will be no unexpected situations during the operation of the EMU.

[0054] Based on the same inventive concept, according to another aspect of the present invention, Figure 4 As shown, an embodiment of the present invention further provides a computer device 30, which includes a processor 310 and a memory 320. The memory 320 stores a computer program 321 that can be run on the processor. When the processor 310 executes the program, the steps of the above method are performed.

[0055] Based on the same inventive concept, according to another aspect of the present invention, Figure 5 As shown, an embodiment of the present invention further provides a computer-readable storage medium 40, which stores a computer program 410 for executing the above method when executed by a processor.

[0056] The embodiment of the present invention may also include a corresponding computer device. The computer device includes a memory, at least one processor, and a computer program stored in the memory and executable on the processor, and the processor executes any one of the above methods when executing the program.

[0057] The memory, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer executable programs and modules, such as program instructions / modules in the embodiments of the present application. The processor executes various functional applications and data processing of the device by running the non-volatile software programs, instructions and modules stored in the memory, that is, implementing the above method.

[0058] The memory may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created according to the use of the device, etc. In addition, the memory may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In an embodiment, the memory may optionally include a memory remotely arranged relative to the processor, and these remote memories may be connected to the local module via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0059] Finally, it should be noted that a person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiments can be realized by controlling the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, the storage medium of the program can be a disk, an optical disk, a read-only storage memory ROM or a random access memory RAM, etc. The above-mentioned computer program embodiments can achieve the same or similar effects as the corresponding above-mentioned arbitrary method embodiments.

[0060] It will also be appreciated by those skilled in the art that various exemplary logic blocks, modules, circuits and algorithm steps described in conjunction with the disclosure herein can be implemented as electronic hardware, computer software or a combination of the two. In order to clearly illustrate this interchangeability of hardware and software, a general description has been given to the functions of various schematic components, blocks, modules, circuits and steps. Whether this function is implemented as software or hardware depends on specific applications and the design constraints imposed on the entire system. Those skilled in the art can implement the function in various ways for each specific application, but this implementation decision should not be interpreted as causing a departure from the disclosed scope of the embodiments of the present invention.

[0061] The above are exemplary embodiments disclosed in the present invention, but it should be noted that various changes and modifications may be made without departing from the scope of the embodiments disclosed in the present invention as defined in the claims. The functions, steps and / or actions of the method claims according to the disclosed embodiments described herein do not need to be performed in any particular order. The serial numbers of the embodiments disclosed in the above embodiments of the present invention are for description only and do not represent the advantages and disadvantages of the embodiments. In addition, although the elements disclosed in the embodiments of the present invention may be described or required in individual form, they may also be understood as multiple unless explicitly limited to the singular.

[0062] It should be understood that, as used herein, the singular forms "a", "an" are intended to include the plural forms as well, unless the context clearly supports an exception. It should also be understood that, as used herein, "and / or" refers to any and all possible combinations including one or more of the associated listed items.

[0063] It should be understood by those skilled in the art that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments may also be combined, and there are many other variations of different aspects of the above embodiments of the present invention, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention shall be included in the protection scope of the embodiments of the present invention.

Claims

1. An air compressor gas circuit protection and logic protection device, used in a power concentrated EMU, characterized in that: include: A first air compressor (1), a second air compressor (2), a first air compressor high temperature protection switch (3), a first air compressor high pressure protection switch (4), a second air compressor high temperature protection switch (5), a second air compressor high pressure protection switch (6), a power vehicle microcomputer (8), a first non-return valve (21), and a second non-return valve (22); A first one-way valve (21) is connected to the gas outlet of the first air compressor (1), and a second one-way valve (22) is connected to the gas outlet of the second air compressor (2); The first air compressor high temperature protection switch (3), the first air compressor high pressure protection switch (4), the second air compressor high temperature protection switch (5) and the second air compressor high pressure protection switch (6) are connected in parallel to the power vehicle microcomputer (5) through a circuit.

2. The device for air compressor gas circuit protection and logic protection according to claim 1, characterized in that: It also includes a power vehicle auxiliary power supply (9), a first air compressor motor power supply air switch (10), a second air compressor motor power supply air switch (11), a power vehicle control power supply (12), a first air compressor control power supply air switch (13) and a second air compressor control power supply air switch (14); The output end of the power vehicle auxiliary power supply (9) is respectively connected to one end of the first air compressor motor power supply air switch (10) and one end of the second air compressor motor power supply air switch (11); The other end of the first air compressor motor power supply air switch (10) is connected to the first air compressor (1); The other end of the second air compressor motor power supply air switch (11) is connected to the second air compressor (2).

3. The device for air compressor gas circuit protection and logic protection according to claim 1, characterized in that: It also includes a power vehicle control power supply (12), a first air compressor control power supply air switch (13) and a second air compressor control power supply air switch (14); The power vehicle control power supply (12) is respectively connected to one end of the first air compressor control power supply air switch (13) and one end of the second air compressor control power supply air switch (14); The other end of the first air compressor control power supply air switch (13) is connected to the first air compressor high temperature protection switch (3) and the first air compressor high pressure protection switch (4); The other end of the second air compressor control power supply air switch (14) is connected to the second air compressor high temperature protection switch (5) and the second air compressor high pressure protection switch (6).

4. The device for air compressor gas circuit protection and logic protection according to claim 1, characterized in that: It also includes a compressed air filtration system (15), a total air pressure sensor (7), a first total air cylinder (16), a second total air cylinder (17), a third non-return valve (18), air-using equipment (19) and brake air-using equipment (20); One end of the compressed air filtration system (15) is connected to the first one-way valve (21) and the second one-way valve (22), and the other end is connected to the first main air cylinder (16); One end of the second main air cylinder (17) is connected to the brake air device (20), and the other end is connected to the total air pressure sensor (7); The first main air cylinder (16) and the second main air cylinder (17) are connected to an air-using device (19), and a third one-way valve (18) is provided between the second main air cylinder (17) and the air-using device (19).

5. A method for controlling an air compressor gas circuit protection and logic protection device according to any one of claims 1 to 4, characterized in that: include: The power vehicle microcomputer (8) receives an air compressor protection signal; Controlling the corresponding first air compressor high temperature protection switch (3), first air compressor high pressure protection switch (4), second air compressor high temperature protection switch (5) or second air compressor high pressure protection switch (6); Adjusting the first air compressor (1) or the second air compressor (2) to enter a fault mode; Determine whether to allow restart based on the preset reset conditions.

6. A method for air compressor gas circuit protection and logic protection according to claim 5, characterized in that: Also included is that in response to the failure mode being high temperature protection, The power vehicle microcomputer (8) enters an air compressor enhanced heat dissipation mode; Increase the minimum pressure value for starting the failed compressor.

7. A method for air compressor gas circuit protection and logic protection according to claim 6, characterized in that: Also included is that in response to the failure mode being high voltage protection, The power vehicle microcomputer (8) enters an air compressor delayed start mode; Control the restart interval of the faulty compressor from the last shutdown to the current startup to be extended to 20s; Increase the minimum pressure value for starting the failed compressor.

8. The method for air compressor gas circuit protection and logic protection according to claim 7, characterized in that: In response to the failure mode being high temperature and high voltage protection, The power vehicle microcomputer (8) simultaneously enters an air compressor enhanced heat dissipation mode and an air compressor delayed start mode; Increase the minimum pressure value for starting a faulty compressor; The restart interval time of the faulty compressor from the last shutdown to the current startup is forcibly extended to 20s.

9. The method for air compressor gas circuit protection and logic protection according to claim 5, characterized in that: The steps of determining whether to allow restarting according to the preset reset condition include: When the signal is reset, restart is allowed; If a faulty air compressor gives off a high temperature protection signal more than three times within 60 minutes, it will not be allowed to start again.

10. The method for air compressor gas circuit protection and logic protection according to claim 8, characterized in that: The preset reset conditions include: After manually disconnecting the faulty first air compressor motor power supply air switch (10), the second air compressor motor power supply air switch (11), the first air compressor control power supply air switch (13) or the second air compressor control power supply air switch (14), the first air compressor control power supply air switch (13) or the second air compressor control power supply air switch (14) is closed again, and the power vehicle microcomputer (8) does not receive an air compressor protection signal, a reset is performed; and In the air compressor enhanced cooling mode and the air compressor delayed start mode, the power car in the EMU is reset when the power is cut off.

Images