Locomotive wind source system monitoring method and related equipment

Abstract

The invention provides a monitoring method of a locomotive air source system and related equipment, and relates to the technical field of locomotives. The method comprises the steps that the air quality index of compressed air, the first operation index of a compressor and the second operation index of a dryer are monitored, and when any one or more of the air quality index, the first operation index and the second operation index meet abnormal conditions, alarm information is output. The locomotive air source system can be monitored in real time in all directions, the states of the compressor and the dryer in the locomotive air source system can be monitored in real time, and the air quality of compressed air output by the locomotive air source system can also be monitored in real time.

Description

Background Art

[0002] The locomotive air source system is an important part of the locomotive, which can produce clean, dry and compressed air with a certain pressure. It provides the necessary compressed air guarantee for the normal operation of the locomotive through the cooperative operation of compressors, dryers and other components. The compressed air generated by the locomotive air source system is widely used in multiple systems in the locomotive and plays a vital role.

[0003] At present, the monitoring method of locomotive air source system has the problem of single indicator and insufficient comprehensiveness. The monitoring effect is not good for real-time monitoring of the status of the locomotive air source system compressor, whether the dryer is in good condition and the air quality of the compressed air output by the air source system, which can only be compensated by a large amount of preventive maintenance work.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] The present disclosure provides a monitoring method and related equipment for a locomotive air source system, which at least to a certain extent overcome the technical problem that the monitoring solutions for locomotive air source systems provided in the related art are insufficient.

[0006] Other features and advantages of the present disclosure will become apparent from the following detailed description, or may be learned in part by the practice of the present disclosure.

[0007] According to one aspect of the present disclosure, a method for monitoring a locomotive air source system is provided, wherein the locomotive air source system comprises: a compressor and a dryer, wherein the compressor is used to convert air in the environment into compressed air required by the locomotive, and the dryer is used to dry the compressed air; the method comprises: monitoring an air quality index of the compressed air, a first operating index of the compressor, and a second operating index of the dryer; and outputting an alarm message when any one or more of the air quality index, the first operating index, and the second operating index meet an abnormal condition.

[0008] In one embodiment of the present disclosure, after monitoring the air quality index of the compressed air, the first operating index of the compressor and the second operating index of the dryer, the method further includes: obtaining a pre-built locomotive air source system component evaluation model; wherein the locomotive air source system component evaluation model is used to evaluate the performance and / or service life of the locomotive air source system components; generating locomotive air source system component operation and maintenance information according to the air quality index of the compressed air, the first operating index of the compressor and the second operating index of the dryer, and the locomotive air source system component evaluation model; wherein the locomotive air source system component operation and maintenance information is used to maintain and manage the locomotive air source system components.

[0009] In some embodiments, the air quality index includes at least one of the following: oil content, water content and solid particle concentration; wherein outputting alarm information includes: outputting alarm information when any one of the oil content, water content and solid particle concentration meets abnormal conditions.

[0010] In some embodiments, the first operating indicator includes at least one of the following: a compressor internal system pressure value, a compressor exhaust port temperature value, and a compressor lubricating oil temperature value; wherein, the method also includes at least one of the following: when the compressor internal system pressure value is higher than a preset pressure threshold, the compressor control loop is disconnected; when the compressor exhaust port temperature value is higher than a first preset temperature threshold, the compressor control loop is disconnected; when the compressor lubricating oil temperature value is higher than a second preset temperature threshold, the compressor control loop is disconnected; when the compressor lubricating oil temperature value is lower than a third preset temperature threshold, the compressor control loop is disconnected, wherein the third preset temperature threshold is lower than the second preset temperature threshold.

[0011] In some embodiments, the dryer is a double-tower dryer, and the double-tower dryer includes: a first drying tower and a second drying tower; the second operating index includes at least one of the following: a first pressure value of the first drying tower, a second pressure value of the second drying tower, a working overlap time of the first drying tower and the second drying tower for switching transition, the accumulated working time of the first drying tower and / or the second drying tower, and a working output lag time of the first drying tower and / or the second drying tower; wherein the method further includes at least one of the following: judging whether the first drying tower is operating normally according to the first pressure value; judging whether the second drying tower is operating normally according to the second pressure value; judging whether the first drying tower and the second drying tower are switched normally and whether a fault occurs according to the working overlap time, accumulated working time, and working output lag time of the switching transition; judging whether the first drying tower and the second drying tower are switched normally and whether a fault occurs according to the working overlap time, accumulated working time, and working output lag time of the switching transition The method comprises: monitoring the working overlap time of the switching transition between the first drying tower and the second drying tower, and determining that the first drying tower and / or the second drying tower have a fault when the working overlap time exceeds a first time threshold; determining that the first drying tower and / or the second drying tower have not a fault when the working overlap time does not exceed the first time threshold; monitoring the accumulated working time of the first drying tower and / or the second drying tower, and determining that the first drying tower and / or the second drying tower have a fault when the accumulated working time exceeds a second time threshold; determining that the first drying tower and / or the second drying tower have not a fault when the accumulated working time does not exceed the second time threshold; monitoring the working output lag time of the first drying tower and / or the second drying tower, and determining that the first drying tower and / or the second drying tower have a fault when the working output lag time exceeds a third time threshold; determining that the first drying tower and / or the second drying tower have not a fault when the accumulated working time does not exceed the third time threshold.

[0012] According to another aspect of the present disclosure, a monitoring device for a locomotive air source system is also provided, the locomotive air source system comprising: a compressor and a dryer, the compressor being used to convert air in the environment into compressed air required by the locomotive, and the dryer being used to dry the compressed air; the monitoring device comprising: a compressed air quality monitoring module, for obtaining an air quality index of the compressed air; a compressor monitoring module, for obtaining a first operating index of the compressor; a dryer monitoring module, for obtaining a second operating index of the dryer; a data processing module, communicating with the compressed air quality monitoring module, the compressor monitoring module, and the dryer monitoring module respectively, and being used to determine whether any one or more of the air quality index, the first operating index, and the second operating index meet abnormal conditions, and output alarm information when the abnormal conditions are met.

[0013] In some embodiments, the compressed air quality monitoring module includes: an oil and gas sensor for obtaining the oil content in the compressed air; a dew point sensor for obtaining the water content in the compressed air; a solid particle sensor for obtaining the solid particle concentration in the compressed air; wherein the data processing module is used to monitor whether any one of the oil content, water content and solid particle concentration meets abnormal conditions, and output alarm information when the abnormal conditions are met.

[0014] In some embodiments, the compressor monitoring module includes: a sensor of the compressor internal system, used to obtain the pressure value of the compressor internal system; a first temperature sensor, used to obtain the exhaust port temperature value of the compressor; a second temperature sensor, used to obtain the lubricating oil temperature value in the compressor; wherein, the data processing module is used to monitor whether any one of the internal system pressure value, exhaust port temperature value and lubricating oil temperature value meets abnormal conditions, and output alarm information when the abnormal conditions are met.

[0015] In some embodiments, the dryer is a twin-tower dryer, which includes: a first drying tower and a second drying tower; the dryer monitoring module includes: a first pressure sensor, used to obtain a first pressure value of the first drying tower; a second pressure sensor, used to obtain a second pressure value of the second drying tower; wherein the data processing module is used to monitor whether the first pressure value and / or the first pressure value meet abnormal conditions, and output alarm information when the abnormal conditions are met.

[0016] According to another aspect of the present disclosure, a monitoring device for a locomotive air source system is also provided, including: a monitoring module for monitoring an air quality index of compressed air, a first operating index of a compressor and a second operating index of a dryer; an alarm module for outputting an alarm message when any one or more of the air quality index, the first operating index and the second operating index meet abnormal conditions.

[0017] According to another aspect of the present disclosure, an electronic device is also provided, comprising: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to execute any one of the above-mentioned methods for monitoring a locomotive air source system by executing the executable instructions.

[0018] According to another aspect of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the monitoring method of a locomotive air source system described in any one of the above is implemented.

[0019] A monitoring method for a locomotive air source system is provided in an embodiment of the present disclosure. The locomotive air source system has a compressor and a dryer. The compressor can convert air in the environment into compressed air required by the locomotive, and the dryer can dry the air compressed by the compressor. First, the air quality index of the compressed air output by the locomotive air source system, the first operating index of the compressor and the second operating index of the dryer are obtained. The locomotive air source system is monitored by analyzing whether any one or more of the air quality index, the first operating index and the second operating index meet abnormal conditions, and an alarm is issued for abnormal indicators.

[0020] Through the embodiments of the present disclosure, the effect of being able to conduct all-round real-time monitoring of the locomotive air source system is achieved, which can not only monitor the working status of the compressor and the dryer in real time, but also monitor the air quality of the compressed air output by the locomotive air source system in real time.

[0021] Furthermore, by refining the air quality indicators of the compressed air output by the locomotive air source system into one or more of oil content, water content and solid particle concentration, and by analyzing whether the oil content, water content and solid particle concentration in the air quality indicators meet abnormal conditions, the locomotive air source system is monitored and alarms are given for abnormal indicators, thereby achieving a technical effect of more accurately monitoring the air quality of the compressed air output by the locomotive air source system.

[0022] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0024] Figure 1 A schematic diagram showing the structure of a locomotive air source system in an embodiment of the present disclosure is shown;

[0025] FIG. 2( a ) shows a schematic diagram of a compressor structure in a locomotive air source system in an embodiment of the present disclosure;

[0026] FIG2( b ) shows a schematic diagram of a dryer structure in a locomotive air source system in an embodiment of the present disclosure;

[0027] Figure 3 A flow chart of a monitoring method for a locomotive air source system in an embodiment of the present disclosure is shown;

[0028] Figure 4 A flow chart of a monitoring method for a locomotive air source system in an embodiment of the present disclosure is shown;

[0029] Figure 5 A flow chart of a monitoring method for a locomotive air source system in an embodiment of the present disclosure is shown;

[0030] Figure 6 A schematic diagram showing a monitoring device for a locomotive air source system in an embodiment of the present disclosure;

[0031] FIG. 7( a ) shows a schematic diagram of a compressed air quality monitoring module in an embodiment of the present disclosure;

[0032] FIG7( b ) shows a schematic diagram of a compressor monitoring module in an embodiment of the present disclosure;

[0033] FIG7( c ) shows a schematic diagram of a dryer monitoring module in an embodiment of the present disclosure;

[0034] Figure 8 A schematic diagram showing the structure of a monitoring device for a locomotive air source system according to an embodiment of the present disclosure is shown;

[0035] Fig. 9 A schematic structural diagram of a compressed air quality monitoring module in an embodiment of the present disclosure is shown;

[0036] Fig.10 A schematic diagram of a monitoring device for a locomotive air source system in an embodiment of the present disclosure is shown;

[0037] Fig.11 A structural block diagram of an electronic device in an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0038] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the disclosure will be more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0039] In addition, the accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and their repeated description will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities can be implemented in software form, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.

[0040] The compressed air generated by the locomotive air source system has many important uses in locomotive vehicles. When the compressor or dryer in the locomotive air source system fails, it will directly affect the safe operation of the train. There are solid mechanical impurities, water vapor and oil vapor in the compressed air output by the locomotive air source system. When compressed air is used in the brake system, if there is too much moisture in the compressed air, it will condense and precipitate, causing rust on the brake components and blockage of the air pipeline; if there is too much oil and dirt in the compressed air, it will cause blockage of the air pipeline and aging of the rubber parts, and affect the performance of the dryer; if there are too many dust particles in the compressed air, it will cause wear of the brake components. Poor quality of compressed air will cause failure of the brake system and pose a great safety hazard. Therefore, monitoring the working status of the locomotive air source system compressor, the working status of the dryer and the air quality assurance of the compressed air is of great significance to improving the operating efficiency and safety of the locomotive.

[0041] For ease of understanding, before introducing the embodiments of the present disclosure, several terms involved in the embodiments of the present disclosure are first explained as follows:

[0042] Compressor internal system: the internal part of the compressor in the locomotive air supply system.

[0043] The specific implementation of the embodiment of the present disclosure is described in detail below with reference to the accompanying drawings.

[0044] Figure 1 FIG. 1 is a schematic diagram showing a method for monitoring a locomotive air source system that can be applied to an embodiment of the present disclosure. Figure 1As shown, the locomotive air source system 10 may include a compressor 101 and a dryer 102. The compressor 101 can convert the air in the environment into the compressed air required by the locomotive, and the dryer 102 can dry the air compressed by the compressor. The locomotive air source system is used to provide stable, clean compressed air to the locomotive brake and other air supply equipment, and is also the object of intelligent monitoring of the locomotive digital air source system.

[0045] In one embodiment, the compressor 101 may be a schematic diagram of the structure shown in FIG2( a ). As shown in FIG2( a ), the compressor 101 may include: a compressor monitoring module 201 . The compressor monitoring module 201 is used to obtain indicators related to the working state of the compressor 101 .

[0046] In one embodiment, the dryer 102 may be a schematic diagram of the structure shown in FIG2( b ). As shown in FIG2( b ), the dryer 102 may include: a dryer monitoring module 202 . The dryer monitoring module 202 is used to obtain indicators related to the working state of the dryer 102 .

[0047] Under the above system architecture, the present disclosure provides a method for monitoring a locomotive wind source system, which can be used for but is not limited to Figure 1 The locomotive air source system can also be executed by any electronic device with computing and processing capabilities.

[0048] Figure 3 A flow chart of a monitoring method for a locomotive air source system in an embodiment of the present disclosure is shown. Figure 3 As shown, the method may include the following steps:

[0049] S302, monitoring the air quality index of the compressed air, the first operating index of the compressor, and the second operating index of the dryer.

[0050] Compressed air refers to the air that is compressed by the compressor in the locomotive air source system and dried by the dryer. The air quality index is used to quantify and convey the quality of air. The first operating index is used to measure the working condition of the compressor. The second operating index is used to measure the working condition of the dryer.

[0051] S304: When any one or more of the air quality index, the first operation index and the second operation index meet abnormal conditions, an alarm message is output.

[0052] Among them, the alarm information is a notification or warning information automatically generated by the system when any one or more of the air quality index, the first operating index and the second operating index meet abnormal conditions.

[0053] In some optional embodiments, the alarm information can be used to remind abnormal indicators through code alarms, dashboard indicator warnings, voice or sound and light alarms, display warnings, remote monitoring and warnings, and intelligent warning systems, so as to ensure timely maintenance and ensure the safety of locomotive operation. From the above, it can be seen that the present disclosure achieves the effect of all-round real-time monitoring of the locomotive air source system, which can not only monitor the working status of the compressor and the dryer in real time, but also monitor the air quality of the compressed air output by the locomotive air source system in real time.

[0054] Figure 4 A flow chart of another method for monitoring a locomotive air source system in an embodiment of the present disclosure is shown. Figure 4 As shown, the monitoring method may also include:

[0055] S402 monitors the air quality index of the compressed air, the first operating index of the compressor, and the second operating index of the dryer;

[0056] Compressed air refers to the air that is compressed by the compressor in the locomotive air source system and dried by the dryer. The air quality index is used to quantify and convey the quality of air. The first operating index is used to measure the working condition of the compressor. The second operating index is used to measure the working condition of the dryer.

[0057] S404: obtaining a pre-built locomotive air source system component evaluation model; wherein the locomotive air source system component evaluation model is used to evaluate the performance and / or service life of the locomotive air source system component;

[0058] S406 generates locomotive air source system component operation and maintenance information according to the air quality index of the compressed air, the first operation index of the compressor and the second operation index of the dryer, and the locomotive air source system component evaluation model; wherein the locomotive air source system component operation and maintenance information is used to maintain and manage the locomotive air source system components. As can be seen from the above, the present disclosure achieves the technical effect of early acquisition of locomotive operation and maintenance information, early fault warning and preventive maintenance, and improving the safety and operation efficiency of the locomotive.

[0059] For example, the pre-built locomotive air source system component evaluation model is a service performance and life evaluation model for the air source system and its components. By real-time collection and analysis of key indicator data of the locomotive air source system and based on sensor data, it provides data support for scientific and reasonable maintenance strategies, which helps to extend the service life of equipment and reduce maintenance costs.

[0060] Figure 5 A flow chart of a monitoring method for a locomotive air source system in an embodiment of the present disclosure is shown. Figure 5 As shown, the method may include the following steps:

[0061] S502 monitors air quality indicators of the compressed air, the air quality indicators including at least one of the following: oil content, water content and solid particle concentration;

[0062] Among them, oil content is used to indicate the mass of oil (including liquid oil, suspended oil, and oil vapor) contained in a unit volume of compressed air. Water content is used to indicate the mass or volume ratio of water contained in a unit volume of air. Solid particle concentration is used to indicate the mass or quantity of solid particles contained in a unit volume of compressed air.

[0063] S504: When any one of the indicators of oil content, water content and solid particle concentration meets the abnormal condition, an alarm message is output.

[0064] Among them, the alarm information is the notification or warning information automatically generated by the system when any one of the indicators of oil content, water content and solid particle concentration meets the abnormal conditions. From the above, it can be seen that the present disclosure achieves the technical effect of more microscopically monitoring the air quality of the compressed air output by the locomotive air source system, and can monitor the oil content, water content and solid particle concentration in the compressed air online. It breaks the limitations of traditional locomotive air source system monitoring technology. It realizes synchronous real-time monitoring under complex working conditions to ensure the accuracy and timeliness of fault warning.

[0065] For example, one embodiment of the present disclosure introduces advanced gas detection technology to accurately measure the oil content, water content and solid particle concentration in compressed air. For the first time, the impact of pollutants on the performance of the locomotive air source system is incorporated into the real-time monitoring system, and a preventive maintenance strategy is established based on this, filling the gap in the industry's research on such issues.

[0066] For example, in some embodiments, the quality of compressed air output by the locomotive air source system is required to meet the requirements of "Quality Grades for General Compressed Air (GB13277)" Part 1: Pollutant Purification Grade Standards, Oil Grade 2, Humidity Grade 2, and Solid Particle Grade 2. When the oil content, moisture content, and solid particle concentration of the compressed air output by the locomotive air source system are monitored, and any one of the three indicators reaches Grade 3, the abnormal condition is met, an alarm message is output, and an early warning prompt is issued.

[0067] In this embodiment, ISO 8573-2 is a standard for compressed air quality measurement formulated by the International Organization for Standardization (ISO), which focuses specifically on the determination method of oil mist (oil aerosol) content, and ISO 8573-5 is a specific standard for compressed air quality formulated by the International Organization for Standardization (ISO), which focuses specifically on the test method for oil vapor and organic solvent content. ISO 8573-3 is a specific standard for compressed air quality formulated by the International Organization for Standardization (ISO), which focuses specifically on the test method for humidity measurement. ISO 8573-4 is a specific standard for compressed air quality formulated by the International Organization for Standardization (ISO), which focuses specifically on the test method for solid particle content. ISO 8573-4 is a specific standard for compressed air quality formulated by the International Organization for Standardization (ISO), which focuses specifically on the test method for solid particle content. ISO 8573-8 is a specific standard for compressed air quality formulated by the International Organization for Standardization (ISO), which focuses specifically on the determination method for solid particle content in compressed air.

[0068] In this embodiment, the oil content level, humidity level, and solid particle level in "General Compressed Air Quality Level (GB13277)" are measured according to the above standards formulated by the International Organization for Standardization. For example, the suspended oil and liquid oil in the oil content in Table 1 are measured according to ISO8573-2, the oil vapor in the oil content is measured according to ISO8573-5, the pressure dew point of humidity in Table 2 is measured according to ISO8573-3, the solid particle level 0 to 5 in Table 3 is measured according to ISO8573-4, and the level 6 to 7 is measured according to ISO 8573-8. Among them, the filtration coefficient (rate) P related to the solid particle level refers to the ratio of the number of particles before the filter to the number of particles after the filter, which can be expressed as β = 1 / P, where P is the penetration rate, which means the ratio of the particle concentration after filtration to that before filtration, and the particle size level is used as a subscript. For example, β10 = 75, which means that the number of particles with a particle size of more than 10m before filtration is 75 times higher than that after filtration.

[0069] In this embodiment, as shown in Table 1, the oil content of the compressed air output by the locomotive air source system is required to meet the standard of oil content level 2, that is, the total oil content (liquid oil, suspended oil, oil vapor) ≤ 0.1 mg / m3. When the oil content reaches the standard of oil content level 3, that is, the total oil content (liquid oil, suspended oil, oil vapor) ≤ 1 mg / m3, an alarm message is output to provide an early warning prompt.

[0070] Table 1 Oil content grade

[0071]

[0072] In this embodiment, as shown in Table 2, the water content of the compressed air output by the locomotive air source system is required to meet the standard of humidity level 2, that is, the pressure dew point ≤-40°C. When the water content reaches the standard of humidity level 3, that is, the pressure dew point ≤-20°C, an alarm message is output to give an early warning prompt.

[0073] Table 2 Humidity levels

[0074]

[0075]

[0076] In this embodiment, as shown in Table 3, the solid particle concentration of the compressed air output by the locomotive air source system is required to meet the standard of fixed particle grade 2, that is, the maximum number of particles per cubic meter with a particle size of d≤0.1d / μm is not specified, the maximum number of particles per cubic meter with a particle size of 0.1d / μm<d≤0.5d / μm is 100,000, the maximum number of particles per cubic meter with a particle size of 0.5d / μm<d≤1d / μm is 1000, and the maximum number of particles per cubic meter with a particle size of 1d / μm<d≤5d / μm is 10. When the concentration of solid particulate matter reaches the standard of solid particle grade 3, that is, the maximum number of particles per cubic meter with a particle size of d≤0.1d / μm is not specified, the maximum number of particles per cubic meter with a particle size of 0.1d / μm<d≤0.5d / μm is not specified, the maximum number of particles per cubic meter with a particle size of 0.5d / μm<d≤1d / μm is 10,000, and the maximum number of particles per cubic meter with a particle size of 1d / μm<d≤5d / μm is 500, an alarm message is output and an early warning prompt is issued.

[0077] Table 3 Solid particle grade

[0078]

[0079] In some embodiments, the above-mentioned first operating indicator may include at least one of the following: the internal system pressure value of the compressor, the exhaust temperature value of the compressor, and the lubricating oil temperature value of the compressor; the monitoring method of the locomotive air source system may also include at least one of the following: when the internal system pressure value of the compressor is higher than the preset pressure threshold, the compressor control loop is disconnected; when the exhaust temperature value of the compressor is higher than the first preset temperature threshold, the compressor control loop is disconnected; when the lubricating oil temperature value of the compressor is higher than the second preset temperature threshold, the compressor control loop is disconnected; when the lubricating oil temperature value of the compressor is lower than the third preset temperature threshold, the compressor control loop is disconnected, wherein the third preset temperature threshold is lower than the second preset temperature threshold.

[0080] Among them, the compressor internal system pressure value refers to the maximum pressure or rated pressure that the internal system (such as cylinder, gas tank, etc.) of the compressor can withstand during operation, which is used to indicate the working performance of the compressor; the compressor exhaust port temperature value refers to the gas temperature value at the exhaust port when the compressor discharges gas during the compression process, which is used to indicate the thermal performance of the compressor; the compressor lubricating oil temperature value refers to the temperature of the lubricating oil inside the compressor during operation, which is used to indicate the lubrication effect and thermal stability of the compressor. As can be seen from the above, the present disclosure achieves the technical effect of more comprehensively monitoring the working status of the compressor in the locomotive air source.

[0081] For example, a compressor protection embodiment based on the monitoring method disclosed in the present invention is:

[0082] ①High temperature protection:

[0083] When the monitored compressor lubricating oil temperature is higher than the set temperature of 120°C, the compressor control circuit is disconnected;

[0084] When the compressor exhaust temperature after the oil-gas separator of the compressor unit is detected to be higher than the set temperature of 150°C, the compressor control circuit is disconnected and cannot be restored;

[0085] When the ambient temperature is between 0 and +40°C, the compressor exhaust temperature is higher than the ambient temperature by +15°C, and an alarm is sounded to remind the driver that the exhaust temperature is high.

[0086] ②Overpressure protection:

[0087] When the unit is shut down, if the internal system pressure of the compressor is detected to be higher than 2.7 bar, the compressor control circuit is disconnected; when the internal system pressure of the compressor drops to the rated air pressure of 2.7 bar, the compressor control circuit is connected.

[0088] ③Low temperature protection:

[0089] When the monitored compressor lubricating oil temperature is lower than the set temperature of -20℃, the compressor starts to heat up. At this time, the compressor low-temperature contactor is energized and the unit control circuit will be disconnected.

[0090] In some embodiments, the dryer in the embodiment of the present disclosure may be a double-tower dryer, which includes: a first drying tower and a second drying tower; the above-mentioned second operating index may include at least one of the following: a first pressure value of the first drying tower, a second pressure value of the second drying tower, an overlapping time of switching transition between the first drying tower and the second drying tower, the accumulated working time of the first drying tower and / or the second drying tower, and an output lag time of the first drying tower and / or the second drying tower; wherein the monitoring method of the locomotive air source system may also include at least one of the following: judging whether the first drying tower is working normally according to the first pressure value; judging whether the second drying tower is working normally according to the second pressure value; judging whether the first drying tower and the second drying tower are switched normally and whether a fault occurs according to the overlapping time of switching transition, the accumulated working time, and the output lag time of switching transition; judging whether the first drying tower is working normally according to the overlapping time of switching transition, the accumulated working time, and the output lag time of switching transition. Whether the drying tower and the second drying tower are switched normally and whether there is a fault, including: monitoring the working overlap time of the switching transition between the first drying tower and the second drying tower, when the working overlap time exceeds the first time threshold, determining that the first drying tower and / or the second drying tower has a fault; when the working overlap time does not exceed the first time threshold, determining that the first drying tower and / or the second drying tower has not a fault; monitoring the cumulative working time of the first drying tower and / or the second drying tower, when the cumulative working time exceeds the second time threshold, determining that the first drying tower and / or the second drying tower has a fault; when the cumulative working time does not exceed the second time threshold, determining that the first drying tower and / or the second drying tower has not a fault; monitoring the working output lag time of the first drying tower and / or the second drying tower, when the working output lag time exceeds the third time threshold, determining that the first drying tower and / or the second drying tower has a fault; when the cumulative working time does not exceed the third time threshold, determining that the first drying tower and / or the second drying tower has not a fault.

[0091] Among them, the working overlap time of the switching transition between the first drying tower and the second drying tower is used to indicate that in a dual-tower drying system (including the first drying tower and the second drying tower), when the first drying tower completes its drying task and is ready to enter the regeneration stage, and the second drying tower is ready to enter the adsorption (drying) stage from the regeneration stage, there is a time window between the two. During this period of time, both drying towers are in working state or partial working state to ensure the continuity and stability of the system. The cumulative working time of the first drying tower and / or the second drying tower is used to indicate the total accumulated working time of the drying tower from start to stop during actual operation. The working output lag time of the first drying tower and / or the second drying tower is used to indicate the time delay between the drying tower receiving the input signal and generating the required output. From the above, it can be seen that the present disclosure achieves the technical effect of more comprehensively monitoring the working state of the dryer in the locomotive air source.

[0092] For example, a double-tower dryer sets the switching cycle to 120 seconds, which is the cumulative working time of the first drying tower and / or the second drying tower, including 90 seconds for regeneration time and 30 seconds for inflation time. If any of the following situations occurs, it is considered a dryer failure:

[0093] ① The switching transition time between the first drying tower and the second dryer exceeds 30 seconds;

[0094] ② The cumulative working time of the first drying tower and / or the second drying tower exceeds 150 seconds;

[0095] ③ After the compressor is started, the working output lag time of the first drying tower and / or the second dryer exceeds 20 seconds.

[0096] Figure 6 A schematic diagram of a monitoring device for a locomotive air source system in an embodiment of the present disclosure is shown. Figure 6 As shown, the device may include: a compressed air quality monitoring module 61 , a compressor monitoring module 201 , a dryer monitoring module 202 and a data processing module 64 .

[0097] Among them, the compressed air quality monitoring module 61 is used to obtain the air quality index of the compressed air; the compressor monitoring module 201 is used to obtain the first operating index of the compressor; the dryer monitoring module 202 is used to obtain the second operating index of the dryer; the data processing module 64 communicates with the compressed air quality monitoring module, the compressor monitoring module, and the dryer monitoring module respectively, and is used to determine whether any one or more of the air quality index, the first operating index, and the second operating index meet the abnormal conditions, and output an alarm message when the abnormal conditions are met. It can be seen from the above that the present disclosure realizes the technical effect that a device can simultaneously detect the state of the compressor, the state of the dryer, and the air quality of the compressed air output by the locomotive air source system.

[0098] In the disclosed embodiment, the communication between the data processing module 64 and the compressed air quality monitoring module 61 , the compressor monitoring module 201 , and the dryer monitoring module 202 may be through a wired network or a wireless network.

[0099] Optionally, the wireless network or wired network described above uses standard communication technology and / or protocol. The network is usually the Internet, but it can also be any network, including but not limited to a local area network (LAN), a metropolitan area network (MAN), a wide area network (WAN), a mobile, wired or wireless network, a dedicated network or any combination of a virtual private network). In some embodiments, the data exchanged through the network is represented by technologies and / or formats including Hyper Text Mark-up Language (HTML), Extensible Markup Language (XML), etc. In addition, conventional encryption technologies such as Secure Socket Layer (SSL), Transport Layer Security (TLS), Virtual Private Network (VPN), Internet Protocol Security (IPSec) can also be used to encrypt all or some links. In other embodiments, customized and / or dedicated data communication technologies can also be used to replace or supplement the above data communication technologies.

[0100] Optionally, the data processing module in the embodiment of the present disclosure includes UE (User Equipment). In a specific implementation, the user equipment may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a personal digital assistant (Personal Digital Assistant, PDA), a mobile Internet device (Mobile Internet Device, MID), a wearable device (Wearable Device) or a vehicle-mounted device, etc. It should be noted that the specific type of the user equipment is not limited in the embodiment of the present disclosure.

[0101] FIG7(a) shows a schematic diagram of an optional compressed air quality monitoring module according to an embodiment of the present disclosure. As shown in FIG7(a), the compressed air quality monitoring module 61 may include: an oil and gas sensor 711 for obtaining the oil content in the compressed air; a dew point sensor 712 for obtaining the water content in the compressed air; a solid particle sensor 713 for obtaining the solid particle concentration in the compressed air; wherein the device may also include a data processing module for monitoring whether any one of the indicators of oil content, water content and solid particle concentration meets abnormal conditions, and outputs alarm information when the abnormal conditions are met. As can be seen from the above, the present disclosure provides a device that can more accurately monitor the air quality of the compressed air output by the locomotive air source system.

[0102] Optionally, the monitoring principle of the oil and gas sensor can be: the oil-containing components in the compressed air are mainly compressor lubricating oil and other hydrocarbon compounds, which are mixed organic vapors. The oil and gas sensor in the embodiment of the present disclosure uses a photoionization sensor for detection. The photoionization sensor is composed of an ultraviolet light source and an ion chamber. There are positive and negative electrodes in the ion chamber to form an electric field. The air to be tested is ionized under the irradiation of the ultraviolet lamp, and a current is formed between the electrodes. After amplification, an electrical signal is output. After the gas is detected, the ions recombine to form the original gas. The photon energy of most air components such as nitrogen, oxygen, and carbon dioxide is higher than the energy provided by UV (Ultra-Violet Ray) lamps, so these air components will not be detected. The oil and gas sensor has good sensitivity, is suitable for ppb (parts per billion) to ppm (parts per million), can distinguish organic gases from mixed gases, meet the requirements of the measurement environment, and realize the detection of oil content based on this principle.

[0103] Optionally, the monitoring principle of the dew point sensor can be: using a humidity-sensitive capacitor humidity sensor. The humidity-sensitive capacitor is generally made of a polymer film capacitor. When the ambient humidity changes, the dielectric constant of the humidity-sensitive capacitor changes, causing its capacitance to change. The capacitance change is proportional to the relative humidity. Based on this principle, the water content can be detected.

[0104] Optionally, the monitoring principle of the solid particle sensor can be: particles and molecules will scatter light under the irradiation of light, and at the same time, they will absorb part of the energy of the irradiated light. When a beam of parallel monochromatic light is incident on the particle field to be measured, it will be affected by the scattering and absorption of the particles, and the light intensity will be attenuated. In this way, the relative attenuation rate of the incident light passing through the concentration field to be measured can be obtained, and the magnitude of the relative attenuation rate can linearly reflect the relative concentration of dust in the field to be measured. The magnitude of the light intensity is proportional to the strength of the electrical signal converted by photoelectric conversion. The concentration of solid particles can be indirectly measured by analyzing the electrical signal. Based on this principle, the detection of solid particle concentration can be achieved.

[0105] FIG7(b) shows a schematic diagram of an optional compressor monitoring module according to an embodiment of the present disclosure. As shown in FIG7(b), the compressor monitoring module 201 may include: a pressure sensor 721 of the compressor internal system, used to obtain the compressor internal pressure value; a first temperature sensor 722, used to obtain the compressor exhaust port temperature value; a second temperature sensor 723, used to obtain the compressor lubricating oil temperature value; wherein, the device may also include a data processing module, used to monitor whether any one of the internal system pressure value, exhaust port temperature value and lubricating oil temperature value meets the abnormal condition, and output an alarm message when the abnormal condition is met. As can be seen from the above, the present disclosure provides a device that can more comprehensively monitor the working status of the compressor in the locomotive air source.

[0106] FIG7(c) shows a schematic diagram of an optional dryer monitoring module according to an embodiment of the present disclosure. As shown in FIG7(c), the dryer may be a double-tower dryer, which may include: a first drying tower and a second drying tower; the dryer monitoring module 202 may include: a first pressure sensor 731, disposed inside the first drying tower, for obtaining a first pressure value of the first drying tower; a second pressure sensor 732, disposed inside the second drying tower, for obtaining a second pressure value of the second drying tower; wherein the device may also include a data processing module for monitoring the first pressure value and / or whether the first pressure value meets an abnormal condition, and outputting an alarm message when the abnormal condition is met. As can be seen from the above, the present disclosure provides a device that can more comprehensively monitor the working status of the dryer in the locomotive air source.

[0107] Figure 8 A schematic diagram of the structure of a monitoring device for a locomotive air source system according to an embodiment of the present disclosure is shown. Figure 8As shown, the device may include: the above-mentioned compressed air quality monitoring module 61, the compressor monitoring module 201 and the dryer monitoring module 202. The compressor monitoring module 201 may include, in addition to: the pressure sensor 721, the first temperature sensor 722 and the second temperature sensor 723 of the compressor internal system, a compressor inlet pressure sensor 824 for obtaining the pressure value of the compressor inlet; and a compressor internal temperature sensor 825 for obtaining the temperature value inside the compressor.

[0108] The device in this embodiment may also include a main control unit 85 and a communication interface module, wherein the main control unit 85 is used for data analysis and processing and is the core of the locomotive wind source system monitoring. The main control unit 85 may include a data acquisition subunit 851, a power supply subunit 852, a data processing and analysis subunit 853, and a data communication control subunit 854.

[0109] Among them, the data acquisition subunit 851 is used to obtain the indicators monitored by various sensors in the compressed air quality monitoring module 61, the compressor monitoring module 201, and the dryer monitoring module 202; the power supply subunit 852 is used to provide the power required by the locomotive air source system monitoring equipment; the data processing and analysis subunit 853 is used to analyze and process whether the indicators obtained by the data acquisition subunit 851 meet the abnormal conditions, so as to obtain the air quality of the compressed air output by the locomotive air source system, the working state of the compressor of the locomotive air source system, and the working state of the dryer; the data communication control subunit 854 is used to transmit the air quality of the compressed air output by the locomotive air source system, the working state of the compressor of the locomotive air source system, and the working state of the dryer. Among them, the data communication control subunit 854 communicates with the communication interface module, and the data communication control subunit 854 transmits the air quality of the compressed air, the working state of the compressor, and the working state of the dryer to the outside through the communication interface module, so as to facilitate the operation and maintenance of the drivers and maintenance personnel. As can be seen from the above, the present disclosure provides a device for a locomotive air source system that can continuously monitor the air quality of the compressed air output by the air source system, the working state of the compressor and the working state of the dryer online, and output alarm information. The alarm information can be alarmed in the form of alarm codes, voice alarms, fault prompts, etc., so as to timely perform maintenance, realize early fault warning and preventive maintenance, and improve the safety and operation efficiency of the locomotive.

[0110] Among them, the communication interface module can include Ethernet, RS485 (TIA / EIA-485-A, a serial communication protocol for differential transmission), MVB (Multifunction Vehicle Bus), data reading equipment, buttons and various alarm prompting devices such as indicator lights. As can be seen from the above, the monitoring equipment of the locomotive air source system shown in the present disclosure reserves multiple interfaces for communicating with the locomotive, such as MVB (Multifunction Vehicle Bus), Ethernet, etc., to ensure that the equipment is seamlessly connected with the existing system, and at the same time, the normal operation of the locomotive will not be affected when the equipment fails, which reflects a high degree of system compatibility and stability.

[0111] Among them, the power subunit is independent of the locomotive air source system. It can be seen that the monitoring equipment of the locomotive air source system disclosed in the present invention innovatively adopts a redundant design strategy to ensure that even if the local monitoring equipment fails completely or partially, the air source system can still operate normally. At the same time, the equipment's anti-interference ability and durability design are enhanced, so that it can still maintain stable monitoring performance in extreme environments.

[0112] Optionally, a compressor inlet pressure sensor 824 may be provided before the air inlet of the air filter in the compressor to collect the air inlet pressure value for judging the resistance of the air filter. If the monitored air inlet pressure is reduced to a critical value, the air filter needs to be replaced. A pressure sensor 721 of the compressor internal system may be provided inside the compressor, generally installed inside the oil and gas cylinder, and is mainly used to collect the pressure value inside the compressor. If the main control unit 85 detects that the pressure value inside the compressor exceeds a set limit value, an alarm is sounded. A compressor internal temperature sensor 825 may be provided before the compressor cooler to collect the temperature value inside the compressor. If the main control unit 85 obtains that the temperature value inside the compressor exceeds a set limit value, an alarm is sounded. A first temperature sensor 722 is used to obtain the temperature value of the compressor exhaust port. The main control unit 85 monitors the cooling capacity of the compressor by analyzing the temperature value inside the compressor and the temperature value of the compressor exhaust port. A second temperature sensor 723 may be provided at the lower part of the oil and gas cylinder inside the compressor to obtain the temperature value of the lubricating oil in the compressor. If the main control unit 85 obtains that the temperature value of the lubricating oil in the compressor exceeds a set limit value, an alarm is sounded to prevent the occurrence of fire.

[0113] In a preferred embodiment, after the power module 852 inputs an external power supply (for example, the locomotive input DC110V) and works normally, an air input in the locomotive air source system is connected, and the data acquisition subunit 851 is responsible for collecting real-time index data obtained from the sensors of the compressed air quality monitoring module 61, the compressor monitoring module 201, and the dryer monitoring module 202. After being processed by the data processing and analysis subunit 853, the main control unit 85 can obtain and record the real-time information of the air quality of the compressed air output by the locomotive air source system, the status of the compressor and the status of the dryer of the locomotive air source system. If the indicator range is outside the set threshold range, an indicator light or display screen will appear to alarm abnormal prompt information. At the same time, it can also be transmitted to the locomotive main control system TCMS (Train Control and Monitoring System) through communication interfaces such as on-board Ethernet, RS485 (TIA / EIA-485-A, a differential transmission serial communication protocol), MVB (Multifunction Vehicle Bus), etc., and directly notify the locomotive driver through devices such as display screens or through ground equipment such as CMD (Chinalocomotive remote Monitoring and Diagnosis system). The ground equipment stores and analyzes the data and notifies the inspection and maintenance personnel so that the staff can discover and issue early warnings and eliminate abnormal faults in time. Since the collected information is real-time and continuous, the failure time of consumables such as air filter, oil filter, lubricant, desiccant, etc. in the air source system can be predicted based on experience, and preventive maintenance of locomotive air source system components can be changed. In addition, the collected information data is transferred to the ground equipment, realizing data backup and synchronous analysis.

[0114] Fig. 9 A schematic diagram of the structure of a compressed air quality monitoring module in an embodiment of the present disclosure is shown. Fig. 9 As shown, the compressed air quality monitoring module includes a transmission channel connected to the wind source system at one end and communicated with the atmosphere at the other end. An air intake component is arranged at one end of the transmission channel: an isolation plug 91, a pressure reducing valve 92, an air intake solenoid valve 94, and an air control valve 93. A compressed air storage chamber 95 is arranged behind the air intake component. After the compressed air to be tested is formed, a compressed air quality monitoring sensor and an exhaust component are arranged at the other end of the transmission channel: an exhaust solenoid valve 96 and a muffler. As can be seen from the above, the present disclosure provides a structure of a compressed air quality monitoring module, which can more accurately monitor the air quality of the compressed air output by the locomotive wind source system.

[0115] Based on the same inventive concept, the present disclosure also provides a monitoring device for a locomotive wind source system, as described in the following embodiments. Since the principle of solving the problem in the device embodiment is similar to that in the above method embodiment, the implementation of the device embodiment can refer to the implementation of the above method embodiment, and the repeated parts will not be repeated.

[0116] Fig.10 A schematic diagram of a monitoring device for a locomotive air source system in an embodiment of the present disclosure is shown. Fig.10 As shown, the device may include:

[0117] A monitoring module 1001 is used to monitor the air quality index of the compressed air, the first operating index of the compressor and the second operating index of the dryer;

[0118] The alarm module 1002 is used to output an alarm message when any one or more of the air quality index, the first operating index, and the second operating index meet an abnormal condition.

[0119] It should be noted that the monitoring module 1001 and the alarm module 1002 correspond to S302 to S304 in the method embodiment, and the examples and application scenarios implemented by the modules and the corresponding steps are the same, but are not limited to the contents disclosed in the method embodiment. It should be noted that the modules as part of the device can be executed in a computer system such as a set of computer executable instructions.

[0120] Those skilled in the art will appreciate that various aspects of the present disclosure may be implemented as systems, methods or program products. Therefore, various aspects of the present disclosure may be specifically implemented in the following forms, namely: complete hardware implementation, complete software implementation (including firmware, microcode, etc.), or a combination of hardware and software, which may be collectively referred to herein as "circuits", "modules" or "systems".

[0121] Refer to the following Fig.11 1100 according to this embodiment of the present disclosure is described. Fig.11 The electronic device 1100 shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.

[0122] like Fig.11 As shown, the electronic device 1100 is in the form of a general computing device. The components of the electronic device 1100 may include but are not limited to: at least one processing unit 1110, at least one storage unit 1120, and a bus 1130 connecting different system components (including the storage unit 1120 and the processing unit 1110).

[0123] The storage unit stores a program code, and the program code can be executed by the processing unit 1110, so that the processing unit 1110 performs the steps described in the "Exemplary Method" section of the present specification according to various exemplary embodiments of the present disclosure. For example, the processing unit 1110 can perform the following steps of the above method embodiment: monitoring the air quality index of the compressed air, the first operating index of the compressor, and the second operating index of the dryer; when any one or more of the air quality index, the first operating index, and the second operating index meet abnormal conditions, output alarm information.

[0124] The storage unit 1120 may include a readable medium in the form of a volatile storage unit, such as a random access storage unit (RAM) 11201 and / or a cache storage unit 11202 , and may further include a read-only storage unit (ROM) 11203 .

[0125] The storage unit 1120 may also include a program / utility 11204 having a set (at least one) of program modules 11205, such program modules 11205 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0126] Bus 1130 may represent one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

[0127] The electronic device 1100 may also communicate with one or more external devices 11040 (e.g., keyboards, pointing devices, Bluetooth devices, etc.), may also communicate with one or more devices that enable a user to interact with the electronic device 800, and / or communicate with any device that enables the electronic device 1100 to communicate with one or more other computing devices (e.g., routers, modems, etc.). Such communication may be performed via an input / output (I / O) interface 1150. Furthermore, the electronic device 1100 may also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and / or public networks, such as the Internet) via a network adapter 1160. As shown, the network adapter 1160 communicates with other modules of the electronic device 1100 via a bus 1130. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the electronic device 1100, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0128] Through the description of the above implementation, it is easy for those skilled in the art to understand that the example implementation described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (which can be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the implementation of the present disclosure.

[0129] In particular, according to an embodiment of the present disclosure, the process described above with reference to the flowchart may be implemented as a computer program product, which includes: a computer program, which implements the above-mentioned method for monitoring a locomotive wind source system when executed by a processor.

[0130] In an exemplary embodiment of the present disclosure, a computer-readable storage medium is also provided, which may be a readable signal medium or a readable storage medium. A program product capable of implementing the above method of the present disclosure is stored on the computer-readable storage medium. In some possible implementations, various aspects of the present disclosure may also be implemented in the form of a program product, which includes a program code, and when the program product is run on a terminal device, the program code is used to cause the terminal device to execute the steps according to various exemplary implementations of the present disclosure described in the above “Exemplary Method” section of this specification.

[0131] More specific examples of computer-readable storage media in the present disclosure may include, but are not limited to, an electrical connection having one or more conductors, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0132] In the present disclosure, a computer readable storage medium may include a data signal propagated in baseband or as part of a carrier wave, wherein a readable program code is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A readable signal medium may also be any readable medium other than a readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0133] Alternatively, the program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination of the foregoing.

[0134] In a specific implementation, the program code for performing the operations of the present disclosure may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, etc., and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., using an Internet service provider to connect through the Internet).

[0135] It should be noted that, although several modules or units of the device for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiments of the present disclosure, the features and functions of two or more modules or units described above can be embodied in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into multiple modules or units to be embodied.

[0136] In addition, although the steps of the method in the present disclosure are described in a specific order in the drawings, this does not require or imply that the steps must be performed in this specific order, or that all the steps shown must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps, etc.

[0137] Through the description of the above implementation, it is easy for those skilled in the art to understand that the example implementation described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (which can be a personal computer, a server, a mobile terminal, or a network device, etc.) to execute the method according to the implementation of the present disclosure.

[0138] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

[0139] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0140] With the rapid development of my country's railway transportation industry and the widespread application of intelligent, information and digital technologies, the present invention integrates sensor technology, data processing and analysis technology to address the shortcomings of existing locomotive air source systems in fault diagnosis and preventive maintenance. Because of the use of online detection, the oil content, water content, solid particle concentration, and working index parameters of the compressor and dryer in the compressed air output by the air source system can be fully, real-time and multi-parameter online monitoring, which can effectively reflect the quality of compressed air and judge and evaluate the status of the compressor and dryer in the air source system. When the air quality of the compressed air exceeds the standard or the compressor or dryer fails, it can be reminded by means of alarms such as voice display lights. The filter drying device can be repaired before the relevant valves and pipelines are damaged and corroded due to poor air quality, effectively extending the service life of the valves, slowing down the corrosion rate of the pipelines, reducing the maintenance workload and unnecessary replacement of desiccant, providing an effective means for scientific maintenance and adding new guarantees for the safe and reliable use of locomotives.

[0141] To summarize, the present invention innovatively adopts a monitoring method of multi-parameter fusion and innovatively proposes integrated sensing technology to achieve all-round, multi-parameter real-time online monitoring of the locomotive air source system, including the health status of the compressor and the health status of the dryer, and further refines the monitoring of the oil content, water content, solid particle concentration and other microscopic levels in the compressed air output by the air source system. It breaks the limitations of traditional locomotive air source system monitoring technology, realizes synchronous real-time monitoring under complex working conditions, and ensures the accuracy and timeliness of fault warning.

[0142] In summary, the present invention cleverly combines the Internet of Things technology with big data analysis, which not only realizes the real-time collection and transmission of monitoring data, but also conducts in-depth mining of massive data through big data analysis and artificial intelligence algorithms, accurately predicts potential faults, and promotes the intelligent transformation of wind source system operation and maintenance.

[0143] To sum up, through intelligent monitoring and maintenance methods, the present invention not only solves the problem of unplanned shutdown caused by locomotive air source system failure, and improves the overall availability and operating efficiency of the locomotive, but also greatly enhances the safety and environmental protection performance of the railway transportation industry, and provides strong technical support and safety guarantees for the sustainable development of my country's modern railway transportation.

Claims

1. A method for monitoring a locomotive air source system, characterized in that: The locomotive air source system comprises: a compressor and a dryer, wherein the compressor is used to convert air in the environment into compressed air required by the locomotive, and the dryer is used to dry the compressed air; the method comprises: monitoring an air quality index of the compressed air, a first operating index of the compressor, and a second operating index of the dryer; When any one or more of the air quality index, the first operation index and the second operation index meet an abnormal condition, an alarm message is output.

2. The method for monitoring a locomotive air source system according to claim 1, characterized in that: After monitoring the air quality index of the compressed air, the first operating index of the compressor, and the second operating index of the dryer, the method further includes: Get pre-built locomotive air source system component assessment models; Wherein, the locomotive air source system component evaluation model is used to evaluate the performance and / or service life of the locomotive air source system components; Generate locomotive air source system component operation and maintenance information according to the air quality index of the compressed air, the first operation index of the compressor and the second operation index of the dryer, and the locomotive air source system component evaluation model; Among them, the locomotive air source system component operation and maintenance information is used to maintain and manage the locomotive air source system components.

3. The method for monitoring a locomotive air source system according to claim 1, characterized in that: The air quality index includes at least one of the following: oil content, water content and solid particulate matter concentration; The output alarm information includes: When any one of the indicators of oil content, water content and solid particle concentration meets the abnormal condition, an alarm message is output.

4. The method for monitoring a locomotive air source system according to claim 1, characterized in that: The first operating index includes at least one of the following: a compressor internal system pressure value, a compressor exhaust port temperature value, and a compressor lubricating oil temperature value; Wherein, the method further comprises at least one of the following: When the internal system pressure value of the compressor is higher than a preset pressure threshold, disconnecting the compressor control loop; When the compressor exhaust port temperature value is higher than a first preset temperature threshold, disconnecting the compressor control loop; When the compressor lubricating oil temperature value is higher than a second preset temperature threshold, disconnecting the compressor control loop; When the compressor lubricating oil temperature value is lower than a third preset temperature threshold, the compressor control loop is disconnected, wherein the third preset temperature threshold is lower than the second preset temperature threshold.

5. The method for monitoring a locomotive air source system according to claim 1, characterized in that: The dryer is a double-tower dryer, and the double-tower dryer comprises: a first drying tower and a second drying tower; the second operation index comprises at least one of the following: a first pressure value of the first drying tower, a second pressure value of the second drying tower, an overlapping time of switching transition between the first drying tower and the second drying tower, an accumulated working time of the first drying tower and / or the second drying tower, and a working output lag time of the first drying tower and / or the second drying tower; Wherein, the method further comprises at least one of the following: According to the first pressure value, determining whether the first drying tower is operating normally; According to the second pressure value, judging whether the second drying tower is operating normally; According to the work overlap time, accumulated work time and work output lag time of the switching transition, it is judged whether the first drying tower and the second drying tower are switched normally and whether a fault occurs; According to the work overlap time, the accumulated work time, and the work output lag time of the switching transition, judging whether the first drying tower and the second drying tower are switched normally and whether a fault occurs, including: Monitoring the working overlap time of the switching transition between the first drying tower and the second drying tower, and determining that the first drying tower and / or the second drying tower has a fault when the working overlap time exceeds a first time threshold; and determining that the first drying tower and / or the second drying tower has not a fault when the working overlap time does not exceed the first time threshold; Monitoring the accumulated working time of the first drying tower and / or the second drying tower, and determining that the first drying tower and / or the second drying tower has a fault when the accumulated working time exceeds a second time threshold; and determining that the first drying tower and / or the second drying tower has not a fault when the accumulated working time does not exceed the second time threshold; Monitor the working output lag time of the first drying tower and / or the second drying tower, and when the working output lag time exceeds a third time threshold, determine that the first drying tower and / or the second drying tower has a fault; when the accumulated working time does not exceed the third time threshold, determine that the first drying tower and / or the second drying tower has not a fault.

6. A monitoring device for a locomotive air source system, characterized in that: The locomotive air source system includes: a compressor and a dryer, wherein the compressor is used to convert the air in the environment into compressed air required by the locomotive, and the dryer is used to dry the compressed air; the monitoring equipment includes: A compressed air quality monitoring module, used to obtain air quality indicators of the compressed air; A compressor monitoring module, used for obtaining a first operating index of the compressor; A dryer monitoring module, used for obtaining a second operating index of the dryer; The data processing module communicates with the compressed air quality monitoring module, the compressor monitoring module, and the dryer monitoring module respectively, and is used to determine whether any one or more of the air quality index, the first operating index, and the second operating index meet abnormal conditions, and output alarm information when the abnormal conditions are met.

7. The monitoring device for the locomotive air source system according to claim 6, characterized in that: The compressed air quality monitoring module comprises: An oil-gas sensor, used for obtaining the oil content in the compressed air; A dew point sensor, used to obtain the water content in the compressed air; A solid particle sensor, used to obtain the solid particle concentration in the compressed air; The data processing module is used to monitor whether any one of the oil content, water content and solid particle concentration meets abnormal conditions, and output alarm information when the abnormal conditions are met.

8. The monitoring device for the locomotive air source system according to claim 6, characterized in that: The compressor monitoring module comprises: A pressure sensor of the compressor internal system, used to obtain the pressure value of the compressor internal system; A first temperature sensor, used to obtain the exhaust port temperature value of the compressor; A second temperature sensor, used to obtain a temperature value of the lubricating oil in the compressor; The data processing module is used to monitor whether any one of the internal system pressure value, exhaust port temperature value and lubricating oil temperature value meets an abnormal condition, and output alarm information when the abnormal condition is met.

9. The monitoring device for a locomotive air source system according to claim 6, characterized in that: The dryer is a double-tower dryer, which includes: a first drying tower and a second drying tower; the dryer monitoring module includes: a first pressure sensor, used to obtain a first pressure value of the first drying tower; A second pressure sensor, used to obtain a second pressure value of the second drying tower; The data processing module is used to monitor whether the first pressure value and / or the first pressure value meets an abnormal condition, and output alarm information when the abnormal condition is met.

10. A monitoring device for a locomotive air source system, characterized in that: include: A monitoring module, used to monitor an air quality index of the compressed air, a first operating index of the compressor, and a second operating index of the dryer; The alarm module is used to output an alarm message when any one or more of the air quality index, the first operation index and the second operation index meet abnormal conditions.

11. An electronic device, characterized in that: include: processor; and a memory for storing executable instructions for the processor; Wherein, the processor is configured to execute the method for monitoring a locomotive air source system according to any one of claims 1 to 5 by executing the executable instructions.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for monitoring a locomotive air source system according to any one of claims 1 to 5 is implemented.

Images