Degradation operation method and device of train air conditioning system, train, equipment and medium

Abstract

The invention provides a degradation operation method and device of a train air conditioning system, a train, equipment and a medium, and can be applied to the technical fields of air conditioning and artificial intelligence. The method comprises the steps that operation state information of multiple pieces of equipment in the train air conditioning system is obtained in response, fault information of fault equipment in the multiple pieces of equipment is obtained on the basis of the operation state information and a candidate information set, the multiple pieces of equipment comprise at least two of power supply equipment, control equipment, refrigeration equipment and communication equipment, and the control equipment is connected with the control equipment; the candidate information set comprises a preset condition corresponding to the operation state information, fault state information obtained based on the preset condition, and a fault type and degradation information corresponding to the fault state information, and the fault type and the degradation information are respectively associated with the number of the fault equipment; and executing degradation operation on the air conditioning system based on the fault information to obtain a degradation operation result of the air conditioning system.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air conditioning technology and artificial intelligence technology, in particular to a degraded operation method and device of a train air conditioning system, a train, equipment and a medium. BACKGROUND

[0002] The train air conditioning system is a key equipment for ensuring passenger comfort, health and safety, and normal operation of the train. In modern high-airtightness motor train units, air conditioning system failure can cause the passenger environment to deteriorate and affect passenger experience. In related technologies, the air conditioning system failure is mainly dealt with by stopping the air conditioning system or withdrawing the vehicle from operation, or by using existing troubleshooting procedures to troubleshoot the running status of all devices in the air conditioning system for fault location to facilitate subsequent maintenance, which prevents the failure from expanding to some extent.

[0003] However, the related technology lacks consideration of the severity and specific type of the failure, and direct shutdown causes the system to completely malfunction, the comfort in the car is lost, and the customer experience is affected. At the same time, frequent withdrawal from operation due to air conditioning problems can disrupt the operation plan and reduce the operation efficiency. The air conditioning system has a complex structure, and the device-by-device troubleshooting ignores the logical association between different devices, making it difficult to locate the root cause in time and reducing the troubleshooting efficiency. Shutdown maintenance is a post-maintenance, which prolongs the failure repair time and increases the operation and maintenance cost. SUMMARY

[0004] In view of the above problems, the present application provides a degraded operation method, device, train, equipment, medium and program product of a train air conditioning system.

[0005] According to a first aspect of the present application, a degraded operation method of a train air conditioning system is provided, comprising: in response to obtaining running state information of a plurality of devices in the train air conditioning system, obtaining fault information of a fault device in the plurality of devices based on the running state information and a candidate information set, wherein the plurality of devices includes at least two of a power supply device, a control device, a refrigeration device and a communication device, the candidate information set includes a preset condition corresponding to the running state information, fault state information obtained based on the preset condition, a fault type corresponding to the fault state information and degradation information, and the fault type and the degradation information are respectively associated with the number of fault devices; performing a degraded operation operation on the air conditioning system based on the fault information to obtain a degraded operation result of the air conditioning system.

[0006] A second aspect of the present invention provides a degraded operation device for a train air conditioning system, comprising: an information determination module, configured to, in response to acquiring operating status information of multiple devices in the train air conditioning system, obtain fault information of faulty devices among the multiple devices based on the operating status information and a candidate information set, wherein the multiple devices include at least two of power supply equipment, control equipment, refrigeration equipment, and communication equipment, and the candidate information set includes preset conditions corresponding to the operating status information, fault status information obtained based on the preset conditions, fault type and degraded information corresponding to the fault status information, wherein the fault type and degraded information are respectively associated with the number of faulty devices; and a result determination module, configured to perform a degraded operation operation on the air conditioning system based on the fault information, and obtain a degraded operation result of the air conditioning system.

[0007] A third aspect of the present invention provides a train, comprising: a train car; an air conditioning system for regulating the temperature and ventilation inside the train car; and a degraded operation device for the train air conditioning system as described above.

[0008] A fourth aspect of the present invention provides an electronic device comprising: one or more processors; and a memory for storing one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors perform the method described above.

[0009] A fifth aspect of the invention also provides a computer-readable storage medium having executable instructions stored thereon, which, when executed by a processor, cause the processor to perform the methods described above.

[0010] A sixth aspect of the present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described method.

[0011] According to the degraded operation method, device, train, equipment, medium, and program product of the train air conditioning system provided by the present invention, by comprehensively analyzing the operating status information of multiple logically related devices in the air conditioning system, it avoids checking each device one by one and achieves rapid location of the root fault point. Then, it combines the candidate information set for hierarchical classification and realizes functional reconstruction under multi-level response. By associating the number of faulty devices with different fault types and the degraded information corresponding to different fault types, it realizes degraded control of the air conditioning system, avoids the problem of direct shutdown and the overprotection defects of withdrawal from operation in traditional methods, realizes the maximum availability of the air conditioning system under fault conditions, maintains the environmental comfort in the carriage to a certain extent, and ensures that the train continues to operate in most non-critical fault conditions. It meets the requirement of controlling the scope of fault impact within a local range, avoiding the chain paralysis of the entire system, and further improving the efficiency of train operation and maintenance. Attached Figure Description

[0012] The above and other objects, features and advantages of the present application will become more apparent from the following description when taken in conjunction with the accompanying drawings, in which:

[0013] Figure 1 An application scenario diagram of the degraded operation method, device, train, equipment, medium and program product of the train air conditioning system according to the embodiments of the present application is shown;

[0014] Figure 2 A flowchart of the degraded operation method of the train air conditioning system according to the embodiments of the present application is shown;

[0015] Figure 3A An example schematic diagram of the degraded control process of the train air conditioning system in a fault state according to the embodiments of the present application is shown;

[0016] Figure 3B An example schematic diagram of the degraded control process of the train air conditioning system in another fault state according to the embodiments of the present application is shown;

[0017] Figure 4 A structural block diagram of the degraded operation device of the train air conditioning system according to the embodiments of the present application is shown;

[0018] Figure 5 A block diagram of the electronic device suitable for implementing the degraded operation method of the train air conditioning system according to the embodiments of the present application is shown. DETAILED DESCRIPTION

[0019] Hereinafter, embodiments of the present application will be described with reference to the accompanying drawings. It is to be understood, however, that the description is merely exemplary of the present application, and is intended to provide a thorough description for implementations of the present application, and to convey the best understanding of the embodiments of the present application. It is apparent that the one or more embodiments, however, can be practiced with the abovementioned elements, without using all of the elements, or with one or more variations of the elements, or with one or more other elements, not expressly listed or otherwise set forth herein.

[0020] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "includes" and tautological expressions thereof, such as "including", "includes", "include", "contained", "containing", and so on, means the existence of the stated features, steps, operations, and / or components, but does not preclude the presence or addition of one or more other features, steps, operations, or components.

[0021] All terms used herein, including technical and scientific terms, have the same meanings as those generally understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having meanings consistent with the context of the specification, and should not be interpreted in an idealized or overly formal manner.

[0022] In the case of using expressions such as "at least one of A, B, and C, etc.", it is generally intended to mean "one or more of A, B, and C, etc." (for example, "a system having at least one of A, B, and C" is intended to include a system having A alone, a system having B alone, a system having C alone, a system having A and B together, a system having A and C together, a system having B and C together, and / or a system having A, B, and C together, etc.).

[0023] In the related art, for the train air conditioning system failure, the severity and specific type of the failure are not considered, and direct shutdown causes the system to completely malfunction, the comfort in the car is lost, the experience of the customer is affected, at the same time, the frequent exit from operation due to the air conditioning problem will disrupt the operation plan and reduce the operation efficiency; the air conditioning system structure is complex, and the logical association between different devices is ignored when the devices are checked one by one, so that the root cause cannot be located in time, and the checking efficiency is low; the shutdown maintenance is after-maintenance, which prolongs the fault repair time and increases the operation and maintenance cost.

[0024] Therefore, the application provides a train air conditioning system degradation operation method, device, train, equipment, medium and program product, which comprises the following steps: in response to obtaining the running state information of a plurality of devices in a train air conditioning system, obtaining the fault information of a fault device in the plurality of devices based on the running state information and a candidate information set, wherein the plurality of devices comprise at least two of a power supply device, a control device, a refrigeration device and a communication device, the candidate information set comprises a preset condition corresponding to the running state information, fault state information obtained based on the preset condition, a fault type corresponding to the fault state information and degradation information, and the fault type and the degradation information are respectively associated with the number of the fault device; performing a degradation operation on the air conditioning system based on the fault information to obtain a degradation operation result of the air conditioning system.

[0025] According to the embodiment of the application, the running state information of a plurality of devices with logical association in the air conditioning system is comprehensively analyzed to quickly locate the root fault point, so that hierarchical classification is realized in combination with the candidate information set, function reconstruction under multi-level response is realized, the number of the fault device is associated with the fault type and the degradation information, the maximum availability of the air conditioning system under the fault state is realized, the over-protection defects of direct shutdown and exit from operation in the traditional technology are avoided, the environmental comfort in the car is maintained to a certain extent, the train is maintained to operate under most non-critical fault conditions, the fault influence range is controlled within a local range, the chain paralysis of the whole system is avoided, and the train operation and operation and maintenance efficiency are further improved.

[0026] Figure 1 An application scenario diagram of a train air conditioning system degradation operation method, device, train, equipment, medium and program product according to an embodiment of the application is shown.

[0027] As shown in Figure 1 The application scenarios according to this embodiment can include a data acquisition device 101, a train 102, a network 103 and a server 104. The network 103 is a medium for providing a communication link between the data acquisition device 101 and the server 104. The network 103 can include various connection types, such as wired, wireless communication links or fiber optic cables, etc.

[0028] The train 102 can include multiple carriages, each of which can be configured with one or more air conditioning systems, which can include a power supply device, a control device, a refrigeration device, a communication device and a ventilation device.

[0029] The data acquisition device 101 can be used to monitor and collect the operating parameters of different devices in the air conditioning system in real time. It can be understood that the data acquisition device 101 can be a device opposite to the air conditioning system, or a data acquisition device integrated in the air conditioning system, and the specific form is not limited here.

[0030] The server 104 can be a server that provides various services, such as calculating the optimal degraded operation strategy (e.g., how to reduce load, to what extent to degrade) according to the fault analysis result, such as receiving the operating data of multiple devices of the train air conditioning system sent from the data acquisition device 101.

[0031] It should be noted that the degraded operation method of the train air conditioning system provided by the embodiment of the present application can generally be executed by the server 104. Accordingly, the degraded operation device of the train air conditioning system provided by the embodiment of the present application can generally be provided in the server 104. The degraded operation method of the train air conditioning system provided by the embodiment of the present application can also be executed by a server or a server cluster different from the server 104 and capable of communicating with the data acquisition device 101 and / or the server 104. Accordingly, the degraded operation device of the train air conditioning system provided by the embodiment of the present application can also be provided in a server or a server cluster different from the server 104 and capable of communicating with the data acquisition device 101 and / or the server 104.

[0032] It should be understood that Figure 1 The number of data acquisition devices, trains, networks and servers in

[0033] Figure 2 A flowchart of the degraded operation method of the train air conditioning system according to the embodiment of the present application is shown.

[0034] As shown in Figure 2As shown, the degraded operation method of the train air conditioning system of the embodiment can include operation S210~operation S220.

[0035] In operation S210, in response to obtaining the operation state information of the plurality of devices in the train air conditioning system, based on the operation state information and the candidate information set, the fault information of the fault device in the plurality of devices is obtained, wherein the plurality of devices include at least two of the power supply device, the control device, the refrigeration device and the communication device, the candidate information set includes a preset condition corresponding to the operation state information, a fault state information obtained based on the preset condition, a fault type corresponding to the fault state information and degradation information, and the fault type and the degradation information are respectively associated with the number of fault devices.

[0036] In the embodiment of the application, the operation state information can include the respective device operation parameters of the power supply device, the control device, the refrigeration device and the communication device. The power supply device, the control device, the refrigeration device and the communication device have logical association, for example, abnormality of the power supply device causes shutdown of the refrigeration device. The candidate information set can be a variety of information pre-stored in the system for device fault judgment of the real-time obtained operation state information. The preset condition can be a judgment condition or a judgment threshold for judging whether the device operation parameter is an abnormal parameter.

[0037] In the embodiment of the application, the fault state information can be the abnormal or fault state information in the operation state information determined according to the preset condition, the number of fault devices. The fault type can be classification information determined according to the importance degree of the fault and the number of fault devices. The degradation information can include fault handling instructions and fault handling measures to be taken for the fault device.

[0038] For example, after obtaining the respective device operation parameters of the plurality of devices in the air conditioning system through the data acquisition device, whether the plurality of devices are in abnormal or fault state can be determined in combination with the elements and conditions in the candidate information set to determine the fault device; and then according to the importance degree and the number of the fault device, the fault handling instructions and the fault handling measures for different fault information are obtained.

[0039] For example, the candidate information set can also contain the dependency relationship between different devices in the air conditioning system (for example, the compressor needs to be started synchronously with the power supply device and the communication device). By comparing the real-time operation state information of different devices with the preset state information, the fault device can be accurately identified, for example, it is identified that the contactor in the power supply device is tripped rather than the compressor itself in the refrigeration device is faulty. The traditional method avoids misjudgment and maintenance delay caused by checking each device one by one, and improves the accuracy and efficiency of fault information diagnosis.

[0040] At operation S220, a degraded operation is performed on the air conditioning system based on the fault information, and a degraded operation result of the air conditioning system is obtained.

[0041] In the embodiment of the present application, the degraded operation is a degraded operation in response to the power supply device, the control device, the refrigeration device and the communication device, including power supply degradation operation, control degradation operation, refrigeration degradation operation and communication degradation operation. The degraded operation result includes but is not limited to refrigeration degradation, ventilation degradation and shutdown.

[0042] For example, after determining that the control device and the refrigeration device in the plurality of devices are fault devices, the control degradation operation can be performed on the control device, and the refrigeration degradation operation can be performed on the refrigeration device, to obtain the control degradation result and the refrigeration degradation result.

[0043] According to the embodiment of the present application, by comprehensively analyzing the operation state information of the plurality of devices having logical association in the air conditioning system, the root fault point is quickly located by avoiding checking the devices one by one, so as to realize the hierarchical classification combined with the candidate information set, realize the function reconstruction under multi-level response, and realize the degraded control of the air conditioning system by associating the number of fault devices with different fault types and the degradation information corresponding to different fault types, avoid the problem of direct shutdown and the excessive protection defect of exiting operation in the traditional way, realize the maximum availability of the air conditioning system under the fault state, maintain the environmental comfort in the carriage to a certain extent, and ensure the operation of the train under most non-critical fault conditions, control the fault influence range in a local range, avoid the chain paralysis of the whole system, and further improve the train operation and maintenance efficiency.

[0044] According to the embodiment of the present application, the operation state information includes at least one of the power supply state information of the power supply device, the control state information of the control device, the refrigeration information of the refrigeration device and the communication state information of the communication device.

[0045] In the embodiment of the present application, the power supply device can supply power to the compressor, the fans, the control system and the auxiliary devices such as carriage lighting and socket in the air conditioning system, for example, auxiliary inverter. Each air conditioning system in the carriage can correspond to a plurality of air conditioning units, and each air conditioning unit can have a corresponding auxiliary inverter, so that in the case of failure of any auxiliary inverter, more than half of the air conditioning performance of the whole carriage will not be lost. The power supply state information can include power supply operation parameters, power supply state and power supply device number of different air conditioning units.

[0046] In the embodiments of the present application, the control device can be used to control the air conditioning system, for example, an air conditioning controller. The control state information can include a plurality of control parameters and control states of the air conditioning controller. The refrigeration device can be a device for refrigerating the temperature of the vehicle cabin environment, and can include a compressor, an evaporative fan and a condensing fan. The refrigeration information can include refrigeration device operating parameters, refrigeration states and the number of refrigeration devices corresponding to the compressor, the evaporative fan and the condensing fan respectively. The communication device can be a device for communication between the air conditioning system and other train devices. The communication state information can include communication operating parameters and communication states of the communication device.

[0047] According to the embodiments of the present application, based on the operating state information and the candidate information set, the fault information of the fault device in the plurality of devices is obtained, including at least one of: in the case where the power supply device is determined to be in a fault state based on the power supply state information and the power supply condition in the preset condition, the number of fault power supply devices and the power supply degradation information corresponding to the number of fault power supply devices are obtained as the fault information; in the case where the control device is determined to be in a fault state based on the control state information and the control condition in the preset condition, the control fault type of the control device and the control degradation information corresponding to the control fault type are obtained as the fault information; in the case where the refrigeration device is determined to be in a fault state based on the refrigeration information and the refrigeration condition in the preset condition, the number of fault refrigeration devices and the refrigeration degradation information corresponding to the number of fault refrigeration devices are obtained as the fault information; in the case where the communication device is determined to be in a fault state based on the communication state information and the communication condition in the preset condition, the communication fault type of the communication device and the communication degradation information corresponding to the communication fault type are obtained as the fault information.

[0048] In the embodiments of the present application, the power supply condition can be used to judge whether the power supply state information is an abnormal condition or threshold. The control condition can be used to judge whether the control operating parameter of the control device is an abnormal condition or threshold. The refrigeration condition can be used to judge whether the refrigeration parameter in the refrigeration state information is an abnormal condition or threshold. The communication condition can be used to judge whether the communication operating parameter in the communication device information is an abnormal condition or threshold.

[0049] For example, the power supply operating parameter of the power supply operating parameter can be compared with the power supply parameter threshold. In the case where the comparison result determines that the power supply operating parameter value is an abnormal parameter, the number of fault power supply devices corresponding to the abnormal parameter is determined, and then the power supply degradation information corresponding to the number of fault power supply devices is obtained from the candidate information set.

[0050] For example, the control operating parameter of the control device can be compared with the control parameter threshold. In the case where the comparison result indicates that the control operating parameter is an abnormal parameter, the control device is determined to be in an abnormal state, and then the control degradation information corresponding to the fault control device is obtained from the candidate information set.

[0051] For example, the refrigeration running parameters of the compressor, the evaporative fan and the condensing fan can be compared with the respective parameter thresholds respectively, in the case that the comparison result represents that the refrigeration running parameter is an abnormal parameter, the number of the fault refrigeration equipment corresponding to the abnormal parameter is determined, and then the refrigeration degradation information corresponding to the number is obtained from the candidate information set based on the number of the fault refrigeration equipment.

[0052] For example, the communication running parameter of the communication equipment can be compared with the communication parameter threshold, in the case that the comparison result represents that the communication running parameter is an abnormal parameter, all the air valves in the abnormal air conditioning system are opened to meet the ventilation demand of the train.

[0053] According to the embodiments of the present application, through the fault type identification, the system function reconstruction and the adaptive control, the maximum availability of the air conditioning system under the fault condition is realized, which is different from the traditional simple stop of the system running, but flexibly determines the fault information according to the number of the specific fault equipment and the fault type, so as to adjust the working mode and the performance output of the system, maintains the part or the whole function of the air conditioning system as much as possible under the premise of ensuring the safety, and the degradation mode can significantly improve the availability and the reliability of the air conditioning system under the premise of ensuring the safety.

[0054] According to the embodiments of the present application, the refrigeration information includes at least one of the following: the cycle state information of the compressor in the refrigeration equipment, the pressure information at the air outlet of the compressor, the first information of the evaporative fan in the refrigeration equipment, and the second information of the condensing fan in the refrigeration equipment; in the case that the refrigeration equipment is determined to be in a fault state based on the refrigeration information and the refrigeration condition in the preset condition, the number of the fault refrigeration equipment and the refrigeration degradation information corresponding to the number of the fault refrigeration equipment are obtained as the fault information, including at least one of the following: in the case that the compressor is determined to be in a fault state based on the cycle state information and the cycle condition in the preset condition, the number of the fault compressor and the cycle refrigeration degradation information corresponding to the number of the fault compressor are obtained as the fault information; in the case that the refrigeration equipment is determined to be in an abnormal state based on the pressure information and the pressure condition in the preset condition, the frequency information of the compressor and the frequency degradation information corresponding to the frequency information are obtained as the fault information; in the case that the evaporative fan is determined to be in a fault state based on the first information and the first fan condition in the preset condition, the number of the fault evaporative fan and the evaporative fan degradation information corresponding to the number of the fault evaporative fan are obtained as the fault information; in the case that the condensing fan is determined to be in a fault state based on the second information and the second fan condition in the preset condition, the number of the fault condensing fan and the condensing fan degradation information corresponding to the number of the fault condensing fan are obtained as the fault information.

[0055] In the embodiments of the present application, the pressure information can include first pressure information (high pressure information) and second pressure information (low pressure information), the first information can include a plurality of circulation parameters of the evaporative fan to realize indoor air circulation, and the second information can include a plurality of heat dissipation parameters of the condensing fan to realize air heat dissipation. The circulation condition can be a condition or threshold for judging whether the circulation operation parameter of the compressor is abnormal. The circulation degradation information can be information for stopping operation of one or more compressors according to the number of faulty compressors.

[0056] The pressure condition can be a condition or threshold for judging whether different pressure values at the air port of the compressor are abnormal. The frequency degradation information can be information for degrading the working frequency of the compressor in the case of pressure abnormality. The first fan condition can be a condition or threshold for judging whether the plurality of circulation parameters of the evaporative fan are abnormal. The evaporative fan degradation information can be operation information or instructions for stopping one or more evaporative fans according to the number of faulty evaporative fans in the case of abnormal circulation parameters. The second fan condition can be a condition or threshold for judging whether the plurality of heat dissipation parameters of the condensing fan are abnormal. The condensing fan degradation information can be operation or instructions for stopping one or more condensing fans according to the number of faulty condensing fans in the case of abnormal heat dissipation parameters.

[0057] For example, in the case of abnormal circulation operation parameters, the number of faulty compressors is obtained to be 1, and instructions for stopping the faulty compressor and continuing the refrigeration cycle by the other normal compressors are generated.

[0058] For example, in the case of abnormality of at least one of the first pressure information and the second pressure information, the number of faulty compressors is obtained to be 1, and instructions for stopping the faulty compressor and continuing the refrigeration cycle by the other normal compressors are generated.

[0059] It can be understood that the circulation operation parameters and the pressure information can be abnormal at the same time. A plurality of degradation processing information corresponding to the faulty equipment in the abnormal state at the same time can be generated for subsequent degradation operation, which will not be described in detail here.

[0060] According to an embodiment of the present application, the degraded operation of the air conditioning system is performed based on the fault information, and a degraded operation result of the air conditioning system is obtained, including at least one of: performing power supply degradation operation on the power supply equipment based on the number of fault power supply equipment and power supply degradation information, to obtain power supply degradation result in the degraded operation result; performing control degradation operation on the control equipment based on the control fault type and control degradation information, to obtain control degradation result in the degraded operation result; performing refrigeration degradation operation on the refrigeration equipment based on the number of fault refrigeration equipment and refrigeration degradation information, to obtain refrigeration degradation result in the degraded operation result; performing communication degradation operation on the communication equipment based on the communication fault type and communication degradation information, to obtain communication degradation result in the degraded operation result.

[0061] In an embodiment of the present application, the degraded operation result can be the result after performing degraded operation on different equipment in the air conditioning system, including but not limited to power supply degradation result, control degradation result, refrigeration degradation result, ventilation degradation result, communication degradation result and load reduction degradation result.

[0062] For example, in the case of determining that the air conditioning controller is faulty, the refrigeration equipment in the air conditioning system cannot operate normally, and the standby ventilation program built-in the air conditioning system can be used to directly start the ventilator to operate at a preset medium or low speed to bypass the complex control logic and ensure the air circulation in the vehicle cabin.

[0063] For example, in the case of determining that the air conditioning controller is faulty, the refrigeration equipment in the air conditioning system cannot operate normally, and the standby ventilation program built-in the air conditioning system can be used to directly start the ventilator to operate at a preset medium or low speed to bypass the complex control logic and ensure the air circulation in the vehicle cabin.

[0064] For example, the air conditioning system (which can be the main controller) can continuously monitor the communication link (such as the signal line between the indoor and outdoor units). When the signal is continuously lost for more than a preset time (such as 3-5 minutes), the air conditioning system can determine that there is a communication fault and trigger the degraded operation program; the main controller (or local controller) can read the operation parameters at the previous time from the memory and use them as the basis for degraded operation, thereby realizing operation in the mode before the communication fault; the controller can send a "full open" command signal or a maximum opening position signal to the air valve actuator (such as a stepper motor or a servo motor) to drive all air valves (such as fresh air valves, return air valves and exhaust air valves) to the maximum opening mechanically.

[0065] According to the embodiment of the present application, through the degradation processing in the non-critical fault condition, for example, through the degradation processing of "running in the original mode and the full opening of the wind valve after the communication fault", based on the real-time monitoring of the controller, the state memory ability at the moment of the fault and the preset safe running logic, a set of "emergency plan" is set for the air conditioning system, so that the air conditioning system can rely on "condition reflex" to complete the basic action in the case of communication fault, thereby maximizing the basic function of the air conditioning system under the premise of ensuring the safety of the equipment, and improving the reliability and user experience of the system.

[0066] According to the embodiment of the present application, the pressure information includes at least one of the first pressure value and the second pressure value, the compressor, the evaporative fan and the condensing fan each include a plurality of; the refrigeration degradation operation is performed on the refrigeration equipment based on the number of fault refrigeration equipment and the refrigeration degradation information, and a refrigeration degradation result in the degradation operation result is obtained, including at least one of: performing a refrigeration degradation operation on at least one of the plurality of compressors based on the number of fault compressors and the cycle refrigeration degradation information, and obtaining a cycle degradation result in the refrigeration degradation result; in the case that the first pressure value is greater than the first pressure threshold, performing a frequency degradation operation on at least one of the plurality of compressors based on the first frequency information in the frequency information and the first degradation information in the frequency degradation information, and obtaining a first frequency reduction result; in the case that the second pressure value is less than the second pressure threshold, performing a frequency degradation operation on at least one of the plurality of compressors based on the second frequency information in the frequency information and the second degradation information in the frequency degradation information, and obtaining a second frequency reduction result; performing a refrigeration degradation operation on at least one of the plurality of evaporative fans based on the number of fault evaporative fans and the evaporative fan degradation information, and obtaining an evaporative fan degradation result in the refrigeration degradation result; performing a refrigeration degradation operation on at least one of the plurality of condensing fans based on the number of fault condensing fans and the condensing fan degradation information, and obtaining a condensing fan degradation result in the refrigeration degradation result.

[0067] In the embodiment of the present application, the first pressure value can be a high pressure value detected at the compressor air port, and the first pressure threshold can be a high pressure threshold determined according to experiments or actual conditions. The second pressure value can be a low pressure value detected at the compressor air port. The second pressure threshold can be a low pressure threshold determined according to experiments or actual conditions. The air conditioner controller can change the working frequency of the compressor according to the high pressure value or the low pressure value of the refrigeration equipment in the air conditioning system, so as to avoid the triggering of the pressure switch to cause the compressor to stop.

[0068] For example, in the case that the high pressure value in the refrigeration equipment is greater than the first pressure threshold, the working frequency of the compressor can be reduced. If the high pressure value still exceeds the set value after the frequency of the compressor is reduced, the compressor will continue to run at the reduced frequency.

[0069] For example, in the case of a low pressure value in the refrigeration system being lower than a second pressure threshold, the operating frequency of the compressor can be reduced. If the low pressure value is still lower than the set value after the compressor frequency is reduced, the compressor will continue to operate at a reduced frequency.

[0070] For example, in the case of a low pressure value in the refrigeration system being lower than a second pressure threshold, the operating frequency of the compressor can be reduced. If the low pressure value is still lower than the set value after the compressor frequency is reduced, the compressor will continue to operate at a reduced frequency.

[0071] For example, in the case of a low pressure value in the refrigeration system being lower than a second pressure threshold, the operating frequency of the compressor can be reduced. If the low pressure value is still lower than the set value after the compressor frequency is reduced, the compressor will continue to operate at a reduced frequency.

[0072] In related art, a hard shutdown mechanism is generally used, and in the case of detecting auxiliary inverter failure, compressor failure, fan failure, communication failure, or refrigeration equipment pressure anomaly, the controller directly cuts off the power supply of the air conditioning unit, causing the entire system to stop running. By treating all failures as the same level of danger, it is impossible to distinguish between critical failures and non-critical failures, and the built-in redundancy capability (such as double auxiliary inverter design) of the system is not effectively utilized under the traditional strategy. To solve this technical problem, embodiments of the present application use a multi-level fault-tolerant control method to adopt differentiated processing methods according to different types of faults, and through fault detection, classification decision, and control execution, the maximum availability and safety balance under air conditioning system failure conditions are achieved.

[0073] According to an embodiment of the present application, the degraded operation method of the train air conditioning system further comprises: determining change information corresponding to the first pressure value based on the obtained multiple pressure information corresponding to multiple time points in the target period; and updating the first pressure threshold to obtain an updated pressure threshold in the case where the change information meets a preset change condition, so as to perform a corresponding frequency degradation operation by using the updated pressure threshold.

[0074] In an embodiment of the present application, the target period can be a period for detecting the high pressure value at the compressor air outlet determined according to actual conditions, and the specific period length can be determined according to actual needs, which is not limited herein. The change information can be a plurality of pressure change indicators between a plurality of high pressure values detected at different time points in the target period. The preset change condition can be a condition or threshold for judging whether the plurality of pressure change indicators are abnormal indicators.

[0075] In related art, the pressure threshold is mainly dependent on static and fixed pressure thresholds, and lacks a trend and speed based on pressure changes, so that preventive measures are taken before the system pressure reaches the dangerous threshold, thereby causing a problem of delayed response.

[0076] The embodiments of the present application can detect the change information between pressure values at different times, read the pressure value measured by the high-pressure sensor in real time, calculate the change rate at different times, and set a dynamic safety slope threshold, so as to realize dynamic adjustment and update of the pressure threshold according to different operation modes and environmental conditions.

[0077] For example, in the case of detecting that the high-pressure value is continuously positive and exceeds the preset time length, the controller cancels the waiting for the high-pressure value to reach the upper limit, and immediately performs one or more of the following actions: limiting the compressor frequency rise slope, applying the frequency attenuation in advance, and cooperating to strengthen heat dissipation. It can be understood that the preset time length can be the required time length to prevent false actions caused by accidental disturbances.

[0078] For example, limiting the compressor frequency rise slope can include that the air conditioning system controller can immediately limit the rise rate of the frequency command sent to the variable frequency compressor driver. For example, under normal circumstances, the frequency can rise at a rate of 5 Hz / s, and in the case of detecting that the high-pressure value is continuously positive and exceeds the preset time length, it can be limited to 1 Hz / s or lower. The growth rate of the refrigerant displacement is slowed down from the root cause.

[0079] For example, applying the frequency attenuation in advance can be that the air conditioning system controller can calculate a small frequency attenuation value ΔF (for example, 2%-5% of the current frequency), and subtract the value from the current operating frequency. By reducing the frequency in advance, a part of the system load is actively released to offset the growth inertia of the pressure.

[0080] For example, cooperating to strengthen heat dissipation can be that while the compressor is inhibited, the air conditioning system controller can simultaneously increase the condenser fan speed to the maximum capacity to form a synergistic effect to help inhibit the pressure rise with the strongest forced heat dissipation.

[0081] According to the embodiments of the present application, by setting the change information to predict intervention, the smoothness and reliability of the air conditioning system in response to sudden conditions can be improved, frequent protection shutdown and equipment impact can be effectively avoided, and the continuity of the refrigeration effect and the service life of the equipment can be finally guaranteed.

[0082] According to the embodiments of the present application, the change information includes change direction, change rate, change amplitude, and change relationship; the preset change condition includes at least one of the following: the same change direction corresponding to a plurality of times respectively, and the change rate is greater than a rate threshold; the change amplitude of the first pressure value is greater than an amplitude threshold; and the change relationship between the first pressure value and the second pressure value represents that the first pressure value is in an abnormal state.

[0083] In the embodiments of the present application, the change direction can determine whether the plurality of high pressure values at the previous and subsequent time points are continuously positive. The change rate can be the change rate between the plurality of high pressure values at different time points, which can be represented by a safety slope. The change amplitude can be the fluctuation frequency and amplitude of the high pressure value. The change relationship can be the linkage relationship between the high pressure value and the low pressure value.

[0084] For example, if the change rate between the high pressure values at different time points in a certain period of time is continuously positive and exceeds the safety slope, even if the absolute pressure does not reach the threshold value, the rising slope of the compressor frequency can be actively limited, or a small frequency attenuation can be applied in advance to offset the inertia of the rapid growth of the pressure.

[0085] For example, if the change rate represents that the high pressure value is increasing at an abnormal speed, even if the current absolute pressure is not high, the intervention logic (such as limiting the compressor frequency rising speed, reducing the frequency in advance) can be triggered immediately to limit the situation that the pressure grows too fast.

[0086] Figure 3A An example schematic diagram of a degraded control process of a train air conditioning system in a fault state according to an embodiment of the present application is shown.

[0087] As shown in Figure 3A , the degraded control logic of the air conditioning system in the fault state can be defined, which can include a plurality of control process examples corresponding to the auxiliary inverter, the control device, the communication device and the compressor respectively.

[0088] As shown in Figure 3A (a), the degraded control process for the auxiliary inverter can include operation S301a to operation S303a. Taking an example that each car corresponds to two air conditioning units, and each air conditioning unit is provided with one auxiliary inverter.

[0089] In operation S301a, according to the obtained running parameters of the auxiliary inverter, it is determined whether the number of fault auxiliary inverters is 1.

[0090] In operation S302a, in the case where it is determined that the number of fault auxiliary inverters is 1, shutdown processing can be performed on the fault auxiliary inverter, and the air conditioning system realizes semi-refrigeration.

[0091] In operation S303a, in the case where it is determined that the number of fault auxiliary inverters is not 1, it can be represented that the air conditioning unit and the air conditioning system can operate normally.

[0092] As shown in Figure 3A (b), the degraded control process for the control device can include operation S301b to operation S303b. Taking an example that each car corresponds to one control device.

[0093] When operating S301b, based on the control parameters of the acquired control equipment, determine whether the number of faulty control equipment is 1.

[0094] When operating S302b, if the number of faulty control devices is determined to be 1, the control device can be determined to be in a faulty state, and the carriage can be ventilated.

[0095] When operating S303b, if it is determined that the number of fault control devices is not 1, it can be characterized that the control device and the air conditioning system can operate normally.

[0096] like Figure 3A As shown in Figure (c), the degradation control process for communication equipment may include operations S301c to S303c.

[0097] When operating S301c, the communication parameters of the communication device are obtained to determine whether the communication device is in a fault state.

[0098] When operating S302c, if the communication equipment is determined to be in a faulty state, the air conditioning system will operate in the mode before the communication failure, and all air valves will be fully opened.

[0099] When operating S303c, it will operate normally if the communication equipment is determined to be in a non-faulty state.

[0100] like Figure 3A As shown in Figure (d), the frequency reduction control process for refrigeration equipment can include operations S301d to S306d. The high or low pressure value of the refrigeration equipment changes the compressor's operating frequency, thus minimizing the risk of the pressure switch triggering and causing the compressor to stop. Subsequent degradation processing can be performed based on the pressure information obtained from the high and low pressure sides at the compressor's air outlet.

[0101] When operating S301d, determine whether the high pressure value in the refrigeration system is greater than or equal to the first pressure threshold.

[0102] If the S302d is operating, the compressor's operating frequency can be reduced to a lower frequency.

[0103] If S303d is not operated, the air conditioning system is in normal operating condition.

[0104] When operating S304d, determine whether the low pressure value in the refrigeration system is less than the second pressure threshold.

[0105] If operating S305d, the compressor's operating frequency can be reduced.

[0106] If S306d is not executed, the air conditioning system is in normal operating condition.

[0107] Figure 3BAn example schematic diagram of a train air conditioning system degradation control process in another fault state according to an embodiment of the present application is shown.

[0108] As shown in Figure 3B , the degradation control logic of the air conditioning system in a fault state can be defined, which can include multiple control process examples corresponding to the condenser fan, the evaporative fan and the compressor respectively.

[0109] As shown in Figure 3B (a), the refrigeration degradation control process for the condenser fan can include operation S310a~operation S315a. Taking the air conditioning system of a certain car compartment including 2 condenser fans as an example.

[0110] In operation S310a, according to the obtained condenser fan operating parameters, it is determined whether the condenser fan is in a fault state.

[0111] In operation S311a, in the case where it is determined that the condenser fan is in a fault state, it is determined whether the number of fault condenser fans is 2.

[0112] In operation S312a, if yes, a shutdown operation is performed on the 2 fault condenser fans, and the air conditioning system is in a ventilation state.

[0113] In operation S313a, if no, it is determined whether the number of fault condenser fans is 1.

[0114] In operation S314a, if the number of fault condenser fans is 1, a shutdown operation is performed on the fault condenser fan, and the air conditioning system is in a semi-refrigeration state.

[0115] In operation S315a, if the number of fault condenser fans is neither 1 nor 2, the air conditioning system is in normal operation.

[0116] As shown in Figure 3B (b), the refrigeration degradation control process for the compressor can include operation S310b~operation S315b. Taking the air conditioning system of a certain car compartment including 2 compressors as an example.

[0117] In operation S310b, according to the obtained compressor operating parameters, it is determined whether the compressor is in a fault state.

[0118] In operation S311b, in the case where it is determined that the compressor is in a fault state, it is determined whether the number of fault compressors is 2.

[0119] In operation S312b, if yes, a shutdown operation is performed on the 2 fault compressors, and the air conditioning system is in a ventilation state.

[0120] In operation S313b, if no, it is determined whether the number of fault compressors is 1.

[0121] If the number of the faulty compressors is 1, the stop operation is performed on the faulty compressor, and the air conditioning system is in a semi-refrigeration state.

[0122] If the number of the faulty compressors is neither 1 nor 2, the air conditioning system is in a normal operation.

[0123] As shown in (c) of FIG. 1, Figure 3B The refrigeration degradation control process for the evaporative fan can include operations S310c-S315c.

[0124] In operation S310c, whether the evaporative fan is in a faulty state is determined according to the obtained evaporative fan operation parameter.

[0125] In operation S311c, if the evaporative fan is in a faulty state, whether the number of the faulty evaporative fans is 2 is determined.

[0126] In operation S312c, if yes, the stop operation is performed on the two faulty evaporative fans, and the air conditioning system is in a stop state.

[0127] In operation S313c, if no, whether the number of the faulty evaporative fans is 1 is determined.

[0128] In operation S314c, if the number of the faulty evaporative fans is 1, the stop operation is performed on the faulty evaporative fan, and the air conditioning system is in a semi-refrigeration state.

[0129] In operation S315c, if the evaporative fan is not in a faulty state, and the number of the faulty evaporative fans is neither 1 nor 2, the air conditioning system is in a normal operation.

[0130] Based on the above-described degradation operation method of the train air conditioning system, the application further provides a degradation operation device of a train air conditioning system. Figure 4 The device will be described in detail below.

[0131] Figure 4 A structural block diagram of the degradation operation device of the train air conditioning system according to the embodiment of the application is shown.

[0132] As shown in (c) of FIG. 1, Figure 4 The degradation operation device 400 of the train air conditioning system of the embodiment includes an information determination module 410 and a result determination module 420.

[0133] The information determination module 410 is configured to, in response to obtaining the running state information of the plurality of devices in the train air conditioning system, obtain fault information of a fault device in the plurality of devices based on the running state information and a candidate information set, wherein the plurality of devices include at least two of the power supply device, the control device, the refrigeration device, and the communication device, the candidate information set includes a preset condition corresponding to the running state information, fault state information obtained based on the preset condition, a fault type corresponding to the fault state information, and degradation information, and the fault type and the degradation information are respectively associated with the number of the fault device. In an embodiment, the information determination module 410 can be configured to perform the operation S210 described above, and details are not described herein again.

[0134] The result determination module 420 is configured to perform a degradation operation on the air conditioning system based on the fault information to obtain a degradation operation result of the air conditioning system. In an embodiment, the result determination module 420 can be configured to perform the operation S220 described above, and details are not described herein again.

[0135] According to the embodiments of the present application, based on the information determination module 410 and the result determination module 420 in the degradation operation device 400 of the train air conditioning system, by comprehensively analyzing the running state information of the plurality of devices having logical association in the air conditioning system, the root fault point is quickly located by avoiding checking the devices one by one, thereby realizing the hierarchical classification by combining the candidate information set, realizing the function reconstruction under the multi-level response, and realizing the degradation control of the air conditioning system by respectively associating the number of the fault device with different fault types and the degradation information corresponding to the different fault types, avoiding the problem of direct shutdown and the excessive protection defect of exiting operation in the traditional way, realizing the maximum availability of the air conditioning system under the fault state, maintaining the environmental comfort in the carriage to a certain extent, ensuring the train to maintain operation under most non-critical fault conditions, meeting the requirement of controlling the fault influence range in a local range, avoiding the chain paralysis of the whole system, and further improving the train operation and maintenance efficiency.

[0136] According to the embodiments of the present application, the running state information includes at least one of the power supply state information of the power supply device, the control state information of the control device, the refrigeration information of the refrigeration device, and the communication state information of the communication device.

[0137] According to an embodiment of the present application, the information determining module 410 comprises at least one of a first state determining module, a second state determining module, a third state determining module and a fourth state determining module. The first state determining module is configured to, in a case where it is determined that the power supply device is in a fault state based on the power supply state information and a power supply condition in the preset conditions, obtain a number of fault power supply devices and power supply degradation information corresponding to the number of fault power supply devices as the fault information; the second state determining module is configured to, in a case where it is determined that the control device is in a fault state based on the control state information and a control condition in the preset conditions, obtain a control fault type of the control device and control degradation information corresponding to the control fault type as the fault information; the third state determining module is configured to, in a case where it is determined that the refrigeration device is in a fault state based on the refrigeration information and a refrigeration condition in the preset conditions, obtain a number of fault refrigeration devices and refrigeration degradation information corresponding to the number of fault refrigeration devices as the fault information; and the fourth state determining module is configured to, in a case where it is determined that the communication device is in a fault state based on the communication state information and a communication condition in the preset conditions, obtain a communication fault type of the communication device and communication degradation information corresponding to the communication fault type as the fault information.

[0138] According to an embodiment of the present application, the refrigeration information comprises at least one of cycle state information of a compressor in the refrigeration device, pressure information at a compressor air outlet, first information of an evaporative fan in the refrigeration device and second information of a condensing fan in the refrigeration device.

[0139] The third state determining module comprises at least one of a first state determining submodule, a second state determining submodule, a third state determining submodule and an information determining submodule. The first state determining submodule is configured to, in a case where it is determined that the compressor is in a fault state based on the cycle state information and a cycle condition in the preset conditions, obtain a number of fault compressors and cycle refrigeration degradation information corresponding to the number of fault compressors as the fault information; the second state determining submodule is configured to, in a case where it is determined that the refrigeration device is in an abnormal state based on the pressure information and a pressure condition in the preset conditions, obtain frequency information of the compressor and frequency degradation information corresponding to the frequency information as the fault information; the third state determining submodule is configured to, in a case where it is determined that the evaporative fan is in a fault state based on the first information and a first fan condition in the preset conditions, obtain a number of fault evaporative fans and evaporative fan degradation information corresponding to the number of fault evaporative fans as the fault information; and the information determining submodule is configured to, in a case where it is determined that the condensing fan is in a fault state based on the second information and a second fan condition in the preset conditions, obtain a number of fault condensing fans and condensing fan degradation information corresponding to the number of fault condensing fans as the fault information.

[0140] According to an embodiment of the present application, the result determining module 420 comprises at least one of a first degradation submodule, a second degradation submodule, a third degradation submodule and a fourth degradation submodule. The first degradation submodule is configured to perform a power supply degradation operation on the power supply device based on the number of failed power supply devices and the power supply degradation information, to obtain a power supply degradation result in the degradation running result; the second degradation submodule is configured to perform a control degradation operation on the control device based on the control failure type and the control degradation information, to obtain a control degradation result in the degradation running result; the third degradation submodule is configured to perform a refrigeration degradation operation on the refrigeration device based on the number of failed refrigeration devices and the refrigeration degradation information, to obtain a refrigeration degradation result in the degradation running result; and the fourth degradation submodule is configured to perform a communication degradation operation on the communication device based on the communication failure type and the communication degradation information, to obtain a communication degradation result in the degradation running result.

[0141] According to an embodiment of the present application, the pressure information comprises at least one of a first pressure value and a second pressure value, and the compressor, the evaporative fan and the condensing fan each comprises a plurality of.

[0142] The third degradation submodule comprises at least one of a first degradation unit, a second degradation unit, a third degradation unit, a fourth degradation unit and a fifth degradation unit. The first degradation unit is configured to perform a refrigeration degradation operation on at least one of the plurality of compressors based on the number of failed compressors and the cycle refrigeration degradation information, to obtain a cycle degradation result in the refrigeration degradation result; the second degradation unit is configured to perform a frequency degradation operation on at least one of the plurality of compressors based on first frequency information in the frequency information and first degradation information in the frequency degradation information, to obtain a first frequency reduction result, in a case that the first pressure value is greater than a first pressure threshold; the third degradation unit is configured to perform a frequency degradation operation on at least one of the plurality of compressors based on second frequency information in the frequency information and second degradation information in the frequency degradation information, to obtain a second frequency reduction result, in a case that the second pressure value is less than a second pressure threshold; the fourth degradation unit is configured to perform a refrigeration degradation operation on at least one of the plurality of evaporative fans based on the number of failed evaporative fans and the evaporative fan degradation information, to obtain an evaporative fan degradation result in the refrigeration degradation result; and the fifth degradation unit is configured to perform a refrigeration degradation operation on at least one of the plurality of condensing fans based on the number of failed condensing fans and the condensing fan degradation information, to obtain a condensing fan degradation result in the refrigeration degradation result.

[0143] According to an embodiment of the present application, the degraded operation device of the train air conditioning system further comprises a change information determination module and a threshold updating module. The change information determination module is configured to determine change information corresponding to the first pressure value based on the obtained pressure information corresponding to the plurality of time points in the target time period. The threshold updating module is configured to update the first pressure threshold to obtain an updated pressure threshold in a case where the change information satisfies a preset change condition, so as to perform the corresponding frequency degradation operation by using the updated pressure threshold.

[0144] According to an embodiment of the present application, the change information comprises a change direction, a change rate, a change amplitude and a change relationship. The preset change condition comprises at least one of the following: the change directions corresponding to the plurality of time points are the same, and the change rate is greater than a rate threshold; the change amplitude of the first pressure value is greater than an amplitude threshold; and the change relationship between the first pressure value and the second pressure value indicates that the first pressure value is in an abnormal state.

[0145] According to an embodiment of the present application, any of the information determination module 410 and the result determination module 420 can be combined in one module, or any of the modules can be split into multiple modules. Alternatively, at least part of the function of one or more of the modules can be combined with at least part of the function of other modules, and implemented in one module. According to an embodiment of the present application, at least one of the information determination module 410 and the result determination module 420 can be at least partially implemented as a hardware circuit, such as a field programmable gate array (FPGA), a programmable logic array (PLA), a system on chip, a system on substrate, a system on package, an application specific integrated circuit (ASIC), or any other reasonable way of integrating or packaging a circuit, a hardware or firmware, or implemented in any one of software, hardware and firmware or in a proper combination of any of them. Alternatively, at least one of the information determination module 410 and the result determination module 420 can be at least partially implemented as a computer program module which can perform the corresponding function when the computer program module is run.

[0146] Figure 5 A block diagram of an electronic device suitable for implementing the degraded operation method of the train air conditioning system according to an embodiment of the present application is shown.

[0147] As Figure 5As shown, the electronic device 500 according to an embodiment of the present application includes a processor 501 which can perform various appropriate actions and processes in accordance with a program stored in a read only memory (ROM) 502 or a program loaded into a random access memory (RAM) 503 from a storage section 508. The processor 501 can include, for example, a general purpose microprocessor (e.g., a CPU), an instruction set processor, and / or a related chipset, and / or a special purpose microprocessor (e.g., an application specific integrated circuit (ASIC)), and so on. The processor 501 can also include an on-board memory for cache use. The processor 501 can include a single processing unit or multiple processing units to perform the various actions of the method processes according to embodiments of the present application.

[0148] In the RAM 503, various programs and data required for the operation of the electronic device 500 are stored. The processor 501, the ROM 502, and the RAM 503 are connected to each other via a bus 504. The processor 501 performs various operations of the method processes according to embodiments of the present application by executing the programs in the ROM 502 and / or the RAM 503. Note that the programs can also be stored in one or more memories other than the ROM 502 and the RAM 503. The processor 501 can also perform various operations of the method processes according to embodiments of the present application by executing the programs stored in the one or more memories.

[0149] According to an embodiment of the present application, the electronic device 500 can also include an input / output (I / O) interface 505 which is also connected to the bus 504. The electronic device 500 can also include one or more of the following components connected to the input / output (I / O) interface 505: an input section 506 including a keyboard, a mouse, etc.; an output section 507 including a display such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 508 including a hard disk, etc.; and a communication section 509 including a network interface card such as a LAN card, a modem, etc. The communication section 509 performs communication processing via a network such as the Internet. A drive 510 is also connected to the input / output (I / O) interface 505 as necessary. A removable recording medium 511 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc. is attached to the drive 510 as necessary, so that a computer program read out therefrom is installed in the storage section 508 as necessary.

[0150] The application further provides a computer readable storage medium, which can be included in the device / apparatus / system described in the above embodiments, or can exist independently without being assembled into the device / apparatus / system. The computer readable storage medium carries one or more programs, which, when executed, implement the method according to the embodiments of the application.

[0151] According to the embodiments of the application, the computer readable storage medium can be a non-volatile computer readable storage medium, which can include, but is not limited to, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present application, the computer readable storage medium can be any tangible medium that contains or stores a program, which can be used by or in connection with an instruction execution system, apparatus, or device. For example, according to the embodiments of the application, the computer readable storage medium can include one or more memories of the ROM 502 and / or the RAM 503 described above and / or one or more memories other than the ROM 502 and the RAM 503.

[0152] The embodiments of the application also include a computer program product, which includes a computer program containing program codes for executing the method shown in the flow chart. When the computer program product is run in a computer system, the program codes are used to make the computer system implement the degradation operation method of the train air conditioning system provided by the embodiments of the application.

[0153] The above functions defined in the system / apparatus of the embodiments of the application are performed when the computer program is executed by the processor 501. According to the embodiments of the application, the system, apparatus, module, unit, etc. described above can be implemented by computer program modules.

[0154] In one embodiment, the computer program can rely on tangible storage media such as optical storage media, magnetic storage media, etc. In another embodiment, the computer program can also be transmitted, distributed, downloaded and installed in the form of signals on a network medium, and be downloaded and installed through the communication part 509 and / or installed from the detachable medium 511. The program codes contained in the computer program can be transmitted by any suitable network medium, including but not limited to wireless, wired, etc., or any suitable combination of the foregoing.

[0155] In such embodiments, the computer program can be downloaded and installed from the network via the communication section 509, and / or installed from the removable media 511. When the computer program is executed by the processor 501, the above-described functions defined in the system of the embodiments of the present application are executed. The system, device, apparatus, module, unit, etc. described above can be realized by the computer program modules according to the embodiments of the present application.

[0156] According to the embodiments of the present application, the program code for executing the computer program provided by the embodiments of the present application can be written in any combination of one or more programming languages, and specifically, these computer programs can be implemented using high-level procedural and / or object-oriented programming language, and / or assembly / machine language. The programming language includes, but is not limited to, such as Java, C++, python, "C" language or similar programming language. The program code can be executed entirely on the user computing device, partially on the user device, partially on a remote computing device, or entirely on a remote computing device or server. In the case involving a remote computing device, the remote computing device can be connected to the user computing device through any kind of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computing device (for example, connected to the Internet through an Internet service provider).

[0157] The flowcharts and block diagrams in the drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present application. In this regard, each block in the flowcharts or block diagrams can represent a module, a program segment, or a portion of code, which contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions noted in the blocks can occur in a different order than that shown in the figures. For example, two blocks noted in succession can actually be executed substantially concurrently, or they can sometimes be executed in reverse order, depending on the functionality involved. It should also be noted that each block in the flowcharts or block diagrams, and combinations of blocks in the flowcharts or block diagrams, can be implemented by dedicated hardware-based systems that perform the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0158] Those skilled in the art can understand that the features described in various embodiments of the present application and / or claims can be combined or / and integrated, even if such combinations or integrations are not explicitly described in the present application. In particular, the features described in various embodiments of the present application and / or claims can be combined and / or integrated in various combinations, without departing from the spirit and teachings of the present application. All such combinations and / or integrations fall within the scope of the present application.

[0159] The above described embodiments of the application have been described. However, these embodiments are merely meant to be illustrative and not limiting of the scope of the application. Although each of the embodiments has been described separately, this does not mean that measures from the individual embodiments cannot be used advantageously in combination. The scope of the application is defined by the claims appended hereto and their equivalents. Various alternatives and modifications can be made to the embodiments described and illustrated herein without departing from the scope of the application, which is to be limited only by the appended claims and their equivalents.

Claims

1. A method of degraded operation of a train air conditioning system, characterized in that, The method comprises: In response to obtaining running state information of a plurality of devices in a train air conditioning system, based on the running state information and a candidate information set, obtaining fault information of a fault device in the plurality of devices, wherein the plurality of devices include at least two of a power supply device, a control device, a refrigeration device and a communication device, the candidate information set includes a preset condition corresponding to the running state information, a fault state information obtained based on the preset condition, a fault type corresponding to the fault state information and degradation information, and the fault type and the degradation information are respectively associated with the number of the fault device; Based on the fault information, performing a degradation operation on the air conditioning system to obtain a degradation operation result of the air conditioning system.

2. The method of claim 1, wherein, The running state information includes at least one of the following: power supply state information of the power supply device, control state information of the control device, refrigeration information of the refrigeration device, and communication state information of the communication device.

3. The method of claim 2, wherein, Based on the running state information and the candidate information set, obtaining the fault information of the fault device in the plurality of devices includes at least one of the following: In the case where the power supply device is determined to be in a fault state based on the power supply state information and a power supply condition in the preset condition, obtaining the number of fault power supply devices and power supply degradation information corresponding to the number of fault power supply devices as the fault information; In the case where the control device is determined to be in a fault state based on the control state information and a control condition in the preset condition, obtaining the control fault type of the control device and the control degradation information corresponding to the control fault type as the fault information; In the case where the refrigeration device is determined to be in a fault state based on the refrigeration information and a refrigeration condition in the preset condition, obtaining the number of fault refrigeration devices and refrigeration degradation information corresponding to the number of fault refrigeration devices as the fault information; In the case where the communication device is determined to be in a fault state based on the communication state information and a communication condition in the preset condition, obtaining the communication fault type of the communication device and the communication degradation information corresponding to the communication fault type as the fault information.

4. The method of claim 3, wherein, The refrigeration information includes at least one of the following: cycle state information of a compressor in the refrigeration device, pressure information at a compressor air outlet, first information of an evaporative fan in the refrigeration device, and second information of a condensing fan in the refrigeration device; In the case where the refrigeration device is determined to be in a fault state based on the refrigeration information and a refrigeration condition in the preset condition, obtaining the number of fault refrigeration devices and refrigeration degradation information corresponding to the number of fault refrigeration devices as the fault information includes at least one of the following: In the case where the compressor is determined to be in a fault state based on the cycle state information and a cycle condition in the preset condition, obtaining the number of fault compressors and cycle refrigeration degradation information corresponding to the number of fault compressors as the fault information; In a case where it is determined that the refrigeration device is in an abnormal state based on the pressure information and a pressure condition in the preset conditions, frequency information of the compressor and frequency degradation information corresponding to the frequency information are obtained as the fault information; In a case where it is determined that the evaporative fan is in a fault state based on the first information and a first fan condition in the preset conditions, a number of fault evaporative fans and evaporative fan degradation information corresponding to the number of fault evaporative fans are obtained as the fault information; In a case where it is determined that the condensing fan is in a fault state based on the second information and a second fan condition in the preset conditions, a number of fault condensing fans and condensing fan degradation information corresponding to the number of fault condensing fans are obtained as the fault information.

5. The method of claim 4, wherein, Based on the fault information, a degradation operation is performed on the air conditioning system to obtain a degradation operation result of the air conditioning system, including at least one of the following: Based on the number of fault power supply devices and the power supply degradation information, a power supply degradation operation is performed on the power supply device to obtain a power supply degradation result in the degradation operation result; Based on the control fault type and the control degradation information, a control degradation operation is performed on the control device to obtain a control degradation result in the degradation operation result; Based on the number of fault refrigeration devices and the refrigeration degradation information, a refrigeration degradation operation is performed on the refrigeration device to obtain a refrigeration degradation result in the degradation operation result; Based on the communication fault type and the communication degradation information, a communication degradation operation is performed on the communication device to obtain a communication degradation result in the degradation operation result.

6. The method of claim 5, wherein, The pressure information includes at least one of a first pressure value and a second pressure value, and the compressor, the evaporative fan and the condensing fan each include a plurality of; Based on the number of fault refrigeration devices and the refrigeration degradation information, a refrigeration degradation operation is performed on the refrigeration device to obtain a refrigeration degradation result in the degradation operation result, including at least one of the following: Based on the number of fault compressors and the cycle refrigeration degradation information, a refrigeration degradation operation is performed on at least one of the plurality of compressors to obtain a cycle degradation result in the refrigeration degradation result; In a case where the first pressure value is greater than a first pressure threshold, based on first frequency information in the frequency information and first degradation information in the frequency degradation information, a frequency degradation operation is performed on at least one of the plurality of compressors to obtain a first frequency reduction result; In a case where the second pressure value is less than a second pressure threshold, based on second frequency information in the frequency information and second degradation information in the frequency degradation information, a frequency degradation operation is performed on at least one of the plurality of compressors to obtain a second frequency reduction result; Based on the number of fault evaporative fans and the evaporative fan degradation information, a refrigeration degradation operation is performed on at least one of the plurality of evaporative fans to obtain an evaporative fan degradation result in the refrigeration degradation result; Based on the number of failed condenser fans and the condenser fan degradation information, a refrigeration degradation operation is performed on at least one of the plurality of condenser fans to obtain a condenser fan degradation result in the refrigeration degradation result.

7. The method of claim 6, wherein, The method further includes: Based on the obtained pressure information corresponding to a plurality of time points in a target period, determine the change information corresponding to the first pressure value; In the case where the change information meets the preset change condition, update the first pressure threshold to obtain an updated pressure threshold, and use the updated pressure threshold to perform a corresponding frequency degradation operation.

8. The method of claim 7, wherein, The change information includes change direction, change rate, change amplitude and change relationship; The preset change condition includes at least one of the following: the change directions corresponding to the plurality of time points are the same, and the change rate is greater than a rate threshold; the change amplitude of the first pressure value is greater than an amplitude threshold; the change relationship between the first pressure value and the second pressure value indicates that the first pressure value is in an abnormal state.

9. A degraded operation device of a train air conditioning system, characterized by, The device includes: An information determination module is configured to, in response to obtaining running state information of a plurality of devices in a train air conditioning system, obtain fault information of a fault device in the plurality of devices based on the running state information and a candidate information set, wherein the plurality of devices include at least two of a power supply device, a control device, a refrigeration device, and a communication device, the candidate information set includes a preset condition corresponding to the running state information, fault state information obtained based on the preset condition, a fault type corresponding to the fault state information, and degradation information, and the fault type and the degradation information are respectively associated with the number of the fault device; A result determination module is configured to perform a degradation operation on the air conditioning system based on the fault information to obtain a degradation running result of the air conditioning system.

10. A train characterized by The train includes: A train car; An air conditioning system for adjusting the temperature and ventilation in the train car; The degradation running device of the train air conditioning system of claim 9. 11.An electronic device, comprising: one or more processors; a storage device for storing one or more programs, when the one or more programs are executed by the one or more processors, the one or more processors perform the method according to any one of claims 1-8.

12. A computer-readable storage medium, characterized in that, a storage device for storing one or more programs, when the one or more programs are executed by the one or more processors, the one or more processors perform the method according to any one of claims 1-8.

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