A type of control method and control device for the air conditioning unit in a railway train.

Abstract

This invention proposes a control method and control device for an air conditioning unit in a railway train. For each air conditioning unit, collect return air temperature values ​​measured by multiple return air temperature sensors corresponding to that air conditioning unit; based on the return air temperature values ​​measured by each return air temperature sensor, discard the return air temperature values ​​measured by the faulty return air temperature sensor, and obtain the return air temperature values ​​measured by the first remaining multiple return air temperature sensors; based on the return air temperature values ​​measured by the first remaining multiple return air temperature sensors, discard the return air temperature values ​​measured by the erroneous return air temperature sensor, and obtain the return air temperature values ​​measured by the second remaining multiple return air temperature sensors, in order to adjust the operating parameters of this air conditioning unit.In this way, by successively eliminating return air temperature values ​​measured by faulty return air temperature sensors and falsely reporting return air temperature sensors, this method can improve the accuracy of train car temperature measurement, thereby improving the accuracy of air conditioning unit control.

Description

A control method and control device for an air conditioning unit in a rail train

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 202311464465.8, filed with the State Intellectual Property Office of China on November 6, 2023, entitled “A control method and control device for an air-conditioning unit in a rail train,” the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of rail transportation technology, and in particular to a control method and a control device for an air-conditioning unit in a rail train. Background Art

[0004] Existing rail trains are equipped with air conditioning units to regulate the temperature and humidity inside the train compartments, ensuring a comfortable ride for passengers. However, in actual operation, inaccurate temperature measurements often occur, which affects the temperature regulation and leads to inaccurate temperature control.

[0005] Summary of the Invention

[0006] In view of this, the purpose of the present application is to provide a control method and control device for an air-conditioning unit in a rail train. By successively removing the return air temperature values ​​detected by the faulty return air temperature sensor and the false return air temperature sensor, the accuracy of the car temperature detection can be improved, thereby improving the control accuracy of the air-conditioning unit.

[0007] The present application provides a method for controlling an air conditioning unit in a rail train, wherein the rail train is equipped with an air conditioning unit; a plurality of return air temperature sensors are installed on the inner side wall of the passenger compartment where each air conditioning unit is located; the control method includes:

[0008] For each air conditioning unit, obtaining the return air temperature values ​​detected by multiple return air temperature sensors corresponding to the air conditioning unit;

[0009] Determine whether there is a faulty return air temperature sensor based on the return air temperature value detected by each return air temperature sensor;

[0010] If so, removing the return air temperature value detected by the faulty return air temperature sensor from the return air temperature values ​​detected by the multiple return air temperature sensors to obtain the return air temperature values ​​detected by the multiple first remaining return air temperature sensors;

[0011] determining whether there is a false alarm return air temperature sensor based on the return air temperature values ​​detected by the plurality of first remaining return air temperature sensors;

[0012] If so, removing the return air temperature value detected by the falsely reported return air temperature sensor from the return air temperature values ​​detected by the plurality of first remaining return air temperature sensors to obtain the return air temperature value detected by the second remaining return air temperature sensor;

[0013] The operating parameters of the air conditioning unit are adjusted according to the return air temperature value detected by the second residual return air temperature sensor.

[0014] Furthermore, the step of determining whether there is a faulty return air temperature sensor based on the return air temperature value detected by each return air temperature sensor includes:

[0015] If the return air temperature value detected by any return air temperature sensor exceeds the temperature range and lasts for a preset time, the return air temperature sensor is determined to be a faulty return air temperature sensor.

[0016] Further, determining whether there is a false alarm return air temperature sensor based on the return air temperature values ​​detected by the plurality of first remaining return air temperature sensors includes:

[0017] determining an average of the return air temperature values ​​detected by the plurality of first remaining return air temperature sensors as an average temperature value in the vehicle compartment;

[0018] In combination with the solar radiation effect on the rail train, a first return air temperature sensor located on a light-facing side of an inner side wall of the passenger compartment and a second return air temperature sensor located on a backlight side of the inner side wall of the passenger compartment are selected from the plurality of first remaining return air temperature sensors;

[0019] determining an absolute value of a temperature difference between a return air temperature value detected by the first return air temperature sensor and a return air temperature value detected by the second return air temperature sensor;

[0020] If the absolute value of the temperature difference is greater than a preset difference threshold, determining a first absolute value of the difference between the return air temperature value detected by the first return air temperature sensor and the average temperature value, and a second absolute value of the difference between the return air temperature value detected by the second return air temperature sensor and the average temperature value;

[0021] comparing the first absolute value and the second absolute value;

[0022] If the first absolute value is greater than the second absolute value, determining the first return air temperature sensor as a false alarm return air temperature sensor;

[0023] If the second absolute value is greater than the first absolute value, the second return air temperature sensor is determined to be a false alarm return air temperature sensor.

[0024] Furthermore, the operating parameters of the air conditioning unit are adjusted according to the return air temperature value detected by the second residual return air temperature sensor, including:

[0025] The operating mode, supply air volume and supply air temperature of the air conditioning unit are adjusted according to the return air temperature value detected by the second residual return air temperature sensor and the target temperature value.

[0026] Furthermore, a fresh air temperature sensor is installed at the fresh air outlet of each air conditioning unit; the control method further includes:

[0027] Obtaining a fresh air temperature value detected by a fresh air temperature sensor of each air conditioning unit in the entire train of the rail train;

[0028] Remove the highest and lowest temperature values ​​from the fresh air temperature values ​​detected by the fresh air temperature sensor of each air conditioning unit, and determine the average value of the remaining temperature values ​​as the actual fresh air temperature value;

[0029] The operating parameters of the air conditioning unit are adjusted according to the return air temperature value detected by the second residual return air temperature sensor and the actual fresh air temperature value.

[0030] The present application also provides a control device for an air-conditioning unit in a rail train, wherein the rail train is equipped with an air-conditioning unit; a plurality of return air temperature sensors are installed on the inner side wall of the passenger compartment where each air-conditioning unit is located; the control device includes:

[0031] An acquisition module, configured to acquire, for each air conditioning unit, return air temperature values ​​detected by a plurality of return air temperature sensors corresponding to the air conditioning unit;

[0032] a fault determination module, configured to determine whether there is a faulty return air temperature sensor based on the return air temperature value detected by each return air temperature sensor;

[0033] a fault removal module, configured to remove the return air temperature value detected by the faulty return air temperature sensor from the return air temperature values ​​detected by the plurality of return air temperature sensors, if any, to obtain the return air temperature values ​​detected by the plurality of first remaining return air temperature sensors;

[0034] a false alarm determination module, configured to determine whether there is a false alarm return air temperature sensor based on the return air temperature values ​​detected by the plurality of first remaining return air temperature sensors;

[0035] a false alarm removal module, configured to remove the return air temperature value detected by the false alarm return air temperature sensor from the return air temperature values ​​detected by the plurality of first remaining return air temperature sensors, if any, to obtain the return air temperature value detected by the second remaining return air temperature sensor;

[0036] The regulating module is used to regulate the operating parameters of the air conditioning unit according to the return air temperature value detected by the second residual return air temperature sensor.

[0037] Furthermore, when the fault determination module is used to determine whether there is a faulty return air temperature sensor based on the return air temperature value detected by each return air temperature sensor, the fault determination module is used to:

[0038] If the return air temperature value detected by any return air temperature sensor exceeds the temperature range and lasts for a preset time, the return air temperature sensor is determined to be a faulty return air temperature sensor.

[0039] Furthermore, when the false alarm determination module is used to determine whether there is a false alarm return air temperature sensor based on the return air temperature values ​​detected by the plurality of first remaining return air temperature sensors, the false alarm determination module is used to:

[0040] determining an average of the return air temperature values ​​detected by the plurality of first remaining return air temperature sensors as an average temperature value in the vehicle compartment;

[0041] In combination with the solar radiation effect on the rail train, a first return air temperature sensor located on a light-facing side of an inner side wall of the passenger compartment and a second return air temperature sensor located on a backlight side of the inner side wall of the passenger compartment are selected from the plurality of first remaining return air temperature sensors;

[0042] determining a temperature difference between a return air temperature value detected by the first return air temperature sensor and a return air temperature value detected by the second return air temperature sensor;

[0043] If the temperature difference is greater than a preset difference threshold, determining a first absolute value of the difference between the return air temperature value detected by the first return air temperature sensor and the average temperature value, and a second absolute value of the difference between the return air temperature value detected by the second return air temperature sensor and the average temperature value;

[0044] comparing the first absolute value and the second absolute value;

[0045] If the first absolute value is greater than the second absolute value, determining the first return air temperature sensor as a false alarm return air temperature sensor;

[0046] If the second absolute value is greater than the first absolute value, the second return air temperature sensor is determined to be a false alarm return air temperature sensor.

[0047] An embodiment of the present application also provides an electronic device, comprising: a processor, a memory, and a bus, wherein the memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor and the memory communicate via the bus, and when the machine-readable instructions are executed by the processor, the steps of the control method for an air-conditioning unit in a rail train are performed as described above.

[0048] An embodiment of the present application further provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the above-mentioned method for controlling an air-conditioning unit in a rail train are executed.

[0049] The embodiments of the present application provide a control method and control device for an air-conditioning unit in a rail train. By sequentially removing the return air temperature values ​​detected by a faulty return air temperature sensor and a false-alarm return air temperature sensor, the accuracy of carriage temperature detection can be improved, thereby improving the control accuracy of the air-conditioning unit.

[0050] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0052] FIG1 shows a schematic diagram of air circulation of an air conditioning unit in a rail train provided by an embodiment of the present application;

[0053] FIG2 shows a flow chart of a method for controlling an air-conditioning unit in a rail train provided by an embodiment of the present application;

[0054] FIG3 is a schematic diagram showing a method for filtering temperature detection values ​​of a return air temperature sensor in an air-conditioning unit provided by an embodiment of the present application;

[0055] FIG4 shows a schematic structural diagram of a control device for an air-conditioning unit in a rail train provided by an embodiment of the present application;

[0056] FIG5 shows a schematic structural diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for which protection is claimed, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, each other embodiment obtained by those skilled in the art without making creative work falls within the scope of protection of the present application.

[0058] Research has found that existing rail trains are equipped with air conditioning units to regulate the temperature and humidity inside the carriages, ensuring a comfortable ride for passengers. However, in actual operation, inaccurate temperature measurements are often detected, affecting the temperature regulation and leading to inaccurate temperature control.

[0059] Based on this, an embodiment of the present application provides a control method and a control device for an air-conditioning unit in a rail train. By successively removing the return air temperature values ​​detected by the faulty return air temperature sensor and the false alarm return air temperature sensor, the accuracy of the car temperature detection can be improved, thereby improving the control accuracy of the air-conditioning unit.

[0060] Please refer to Figures 1 and 2. Figure 1 is a schematic diagram of the air circulation of an air-conditioning unit in a rail train provided in an embodiment of the present application; Figure 2 is a flow chart of a control method for an air-conditioning unit in a rail train provided in an embodiment of the present application. As shown in Figure 1, an air-conditioning unit is installed in the rail train; the outside fresh air enters the air-conditioning unit of the rail train and is sent into the passenger compartment, and after passing through the passenger compartment, part of the return air re-enters the air-conditioning unit and is discharged to the outside of the car; a plurality of return air temperature sensors are installed on the inner side wall of the passenger compartment where each air-conditioning unit is located; the return air temperature sensor is used to detect the return air temperature value to reflect the passenger compartment temperature in real time, thereby adjusting the air-conditioning unit. As shown in Figure 2, the control method provided in the embodiment of the present application includes:

[0061] S101 . For each air-conditioning unit, obtain return air temperature values ​​detected by multiple return air temperature sensors corresponding to the air-conditioning unit.

[0062] The control method provided in the embodiments of the present application can be applied to the controller of an air conditioning unit; the controller is in communication with multiple return air temperature sensors to obtain the return air temperature values ​​detected by the return air temperature sensors. Here, considering the sun-facing and sun-backlit sides of rail trains under the influence of solar radiation, multiple return air temperature sensors can be respectively arranged on both sides of the inner side walls of the passenger compartment where the air conditioning unit is located. For example, each car is equipped with two air conditioning units, and a return air temperature sensor is arranged on each side of the inner side wall of each air conditioning unit, for a total of four return air temperature sensors.

[0063] S102: Determine whether there is a faulty return air temperature sensor based on the return air temperature value detected by each return air temperature sensor.

[0064] In this step, when the return air temperature value detected by a return air temperature sensor deviates significantly from the normal range, for example, exceeds the temperature sensor's own range (such as -40 degrees Celsius to 70 degrees Celsius) and lasts for a period of time, it is determined that the return air temperature sensor is faulty.

[0065] In a specific implementation, step S102 may include: if the return air temperature value detected by any return air temperature sensor exceeds the temperature range and lasts for a preset time (e.g., 5 seconds), the return air temperature sensor is determined to be a faulty return air temperature sensor.

[0066] S103: If so, remove the return air temperature value detected by the faulty return air temperature sensor from the return air temperature values ​​detected by the multiple return air temperature sensors to obtain the return air temperature values ​​detected by the multiple first remaining return air temperature sensors.

[0067] Here, if there is a faulty return air temperature sensor, the return air temperature value detected by the faulty return air temperature sensor is removed from the return air temperature values ​​detected by multiple return air temperature sensors to obtain the return air temperature values ​​detected by multiple first remaining return air temperature sensors to eliminate the influence of the erroneous temperature data detected by the faulty return air temperature sensor.

[0068] If there is no faulty return air temperature sensor, the multiple return air temperature sensors may be directly determined as the first remaining return air temperature sensors for subsequent calculations.

[0069] S104: Determine whether there is a false alarm return air temperature sensor based on the return air temperature values ​​detected by the plurality of first remaining return air temperature sensors.

[0070] Unlike a temperature out-of-range value during a fault, a false alarm results in a return air temperature sensor with a certain deviation but still within the measurement range. In this case, the return air temperature values ​​detected by the remaining first return air temperature sensors can be used to determine the average cabin temperature, and temperature values ​​that deviate further from the average cabin temperature can be eliminated.

[0071] In a possible implementation, step S103 may include:

[0072] The average value of the return air temperature values ​​detected by multiple first remaining return air temperature sensors is determined as the average temperature value in the carriage; in combination with the radiation effect of the sun on the rail train, a first return air temperature sensor located on the light-facing side of the inner side wall of the passenger compartment and a second return air temperature sensor located on the backlight side of the inner side wall of the passenger compartment are screened out from the multiple first remaining return air temperature sensors; the temperature difference between the return air temperature value detected by the first return air temperature sensor and the return air temperature value detected by the second return air temperature sensor is determined; if the temperature difference is greater than a preset difference threshold, a first absolute value of the difference between the return air temperature value detected by the first return air temperature sensor and the average temperature value, and a second absolute value of the difference between the return air temperature value detected by the second return air temperature sensor and the average temperature value are determined; the first absolute value and the second absolute value are compared; if the first absolute value is greater than the second absolute value, the first return air temperature sensor is determined as a false alarm return air temperature sensor; if the second absolute value is greater than the first absolute value, the second return air temperature sensor is determined as a false alarm return air temperature sensor.

[0073] Here, the average temperature value in the carriage can be used as a reference value for subsequent temperature comparisons; the solar radiation effect on the rail train can be comprehensively determined in combination with the train's running direction and time, and then the first return air temperature sensor located on the light-facing side of the inner side wall of the passenger compartment and the second return air temperature sensor located on the backlight side of the inner side wall of the passenger compartment are screened out, and the absolute value of the temperature difference between the two is determined; if the absolute value of the temperature difference is less than or equal to a preset difference threshold (such as 8 degrees Celsius), it means that there are no false alarms from the first return air temperature sensor and the second return air temperature sensor. If the absolute value of the temperature difference is greater than the preset difference threshold (such as 8 degrees Celsius), the first absolute value of the difference between the return air temperature value detected by the first return air temperature sensor and the average temperature value is compared, and the second absolute value of the difference between the return air temperature value detected by the second return air temperature sensor and the average temperature value is compared; that is, the return air temperature sensor that deviates more from the average temperature value is determined as a false alarm return air temperature sensor.

[0074] Furthermore, in specific implementation, it may be selected to count a certain period of time after the air conditioning unit is turned on, and to close the vehicle door before determining whether there is a fault or a false alarm, so as to improve the accuracy of the determination.

[0075] S105 : If so, remove the return air temperature value detected by the falsely reported return air temperature sensor from the return air temperature values ​​detected by the plurality of remaining first return air temperature sensors to obtain the return air temperature value detected by the remaining second return air temperature sensors.

[0076] Similarly, if there is a false alarm return air temperature sensor, the return air temperature value detected by the false alarm return air temperature sensor is removed from the return air temperature values ​​detected by multiple first remaining return air temperature sensors to obtain the return air temperature value detected by the second remaining return air temperature sensors, so as to eliminate the influence of the erroneous temperature data detected by the false alarm return air temperature sensor.

[0077] If there are no false alarm return air temperature sensors, all the first remaining return air temperature sensors can be directly determined as the second remaining return air temperature sensors, that is, the return air temperature values ​​detected by all the first remaining return air temperature sensors are considered to be accurate and can be used for subsequent calculations, and then the return air temperature value can be obtained by taking the average value, etc., to adjust the operating parameters of the air-conditioning unit.

[0078] S106: Adjust operating parameters of the air-conditioning unit according to the return air temperature value detected by the second residual return air temperature sensor.

[0079] In this step, the target temperature value refers to the desired return air temperature value to be achieved by the air conditioning unit. The operating mode, supply air volume, and supply air temperature of the air conditioning unit can be adjusted based on the return air temperature value detected by the second residual return air temperature sensor and the target temperature value. There can be one or more second residual return air temperature sensors. When there are multiple second residual return air temperature sensors, the operating parameters of the air conditioning unit can be adjusted based on the average of the return air temperature values ​​detected by the multiple second residual return air temperature sensors and the target temperature value.

[0080] More specifically, by comparing the return air temperature value with the target temperature value, the correct control instructions can be output to adjust the operating mode of the air conditioning unit (such as ventilation, cooling, heating, etc.), the supply air volume and the supply air temperature. Among them, the target temperature can be calculated by a calculation formula (it can be calculated based on the fresh air temperature, and different fresh air temperatures correspond to different target temperatures, which can be automatically achieved by software) or manually set. By comparing the return air temperature with the target temperature, the return air temperature is considered to reflect the temperature inside the vehicle. When the return air temperature value is lower than the target temperature value, there is a need for heating; when the return air temperature value is higher than the target temperature value, there is a need for cooling.

[0081] Furthermore, each air conditioning unit's fresh air inlet is equipped with a fresh air temperature sensor. For example, a four-car train, with two air conditioning units per car, would have a total of 2 * 4 = 8 fresh air temperature sensors. Given that the fresh air temperature sensors detect a relatively stable external environment, the maximum and minimum values ​​are typically removed when determining the fresh air temperature, and the average is taken to avoid the impact of erroneous fresh air temperature data.

[0082] During specific implementation, the fresh air temperature value detected by the fresh air temperature sensor of each air-conditioning unit in the entire train of the rail train is obtained; the highest temperature value and the lowest temperature value among the fresh air temperature values ​​detected by the fresh air temperature sensor of each air-conditioning unit are removed, and the average value of the remaining temperature values ​​is determined as the actual fresh air temperature value; according to the return air temperature value detected by the second remaining return air temperature sensor and the actual fresh air temperature value (and the target temperature value), the operating parameters of the air-conditioning unit are adjusted.

[0083] Furthermore, the supply air temperature sensor used when the return air and fresh air are mixed and then supplied can be used to control the air conditioning unit, for example, the supply air temperature can be adjusted by adjusting the mixing ratio of the return air and fresh air.

[0084] Please refer to Figure 3, which is a schematic diagram of a method for filtering the temperature detection value of a return air temperature sensor in an air conditioning unit according to another embodiment of the present application. As shown in Figure 3, the method provided by the embodiment of the present application includes:

[0085] Get the readings of the two return air temperature sensors for the light-facing side and the backlight side respectively; determine whether each reading exceeds the range. If the reading of a return air temperature sensor exceeds the range, determine that the return air temperature sensor is faulty and discard its reading; if the reading of no return air temperature sensor exceeds the range, determine whether the absolute value of the difference between the two exceeds the preset difference threshold (such as 8 degrees Celsius); if not, it means that there is no false alarm in the return air temperature sensor; if exceeded, determine the absolute value of the difference between the reading and the average temperature value in the car, and the average temperature value in the car is the average of the return air temperature sensor readings; the return air temperature sensor with a larger absolute value, that is, the one that deviates further from the second threshold, is determined as a false alarm, and its reading is discarded.

[0086] In this way, the impact of return air temperature sensor failures and false alarms on train temperature regulation can be avoided, the accuracy of carriage temperature detection can be improved, and the accuracy of control of the air-conditioning unit can be improved; especially in summer and winter, failures and false alarms can be avoided, causing the air-conditioning system to malfunction, resulting in stuffiness or coldness in the car, which can cause unbearable harm to passengers.

[0087] Please refer to Figure 4, which is a schematic diagram of the structure of a control device for an air conditioning unit in a rail train provided in an embodiment of the present application. The rail train is equipped with an air conditioning unit; multiple return air temperature sensors are installed on the inner side wall of the passenger compartment where each air conditioning unit is located. As shown in Figure 4, the control device 400 includes:

[0088] An acquisition module 410 is configured to acquire, for each air conditioning unit, return air temperature values ​​detected by a plurality of return air temperature sensors corresponding to the air conditioning unit;

[0089] a fault determination module 420 for determining whether there is a faulty return air temperature sensor based on the return air temperature value detected by each return air temperature sensor;

[0090] a fault removal module 430 for removing the return air temperature value detected by the faulty return air temperature sensor from the return air temperature values ​​detected by the plurality of return air temperature sensors, if any, to obtain return air temperature values ​​detected by a plurality of first remaining return air temperature sensors;

[0091] a false alarm determination module 440 for determining whether there is a false alarm return air temperature sensor based on the return air temperature values ​​detected by the plurality of first remaining return air temperature sensors;

[0092] a false alarm removal module 450 for removing the return air temperature value detected by the false alarm return air temperature sensor from the return air temperature values ​​detected by the plurality of first remaining return air temperature sensors, if any, to obtain the return air temperature value detected by the second remaining return air temperature sensor;

[0093] The adjustment module 460 is configured to adjust the operating parameters of the air conditioning unit according to the return air temperature value detected by the second residual return air temperature sensor.

[0094] Furthermore, when the fault determination module 420 is used to determine whether there is a faulty return air temperature sensor based on the return air temperature value detected by each return air temperature sensor, the fault determination module 420 is used to:

[0095] If the return air temperature value detected by any return air temperature sensor exceeds the temperature range and lasts for a preset time, the return air temperature sensor is determined to be a faulty return air temperature sensor.

[0096] Furthermore, when the false alarm determination module 440 is used to determine whether there is a false alarm return air temperature sensor based on the return air temperature values ​​detected by the plurality of first remaining return air temperature sensors, the false alarm determination module 440 is used to:

[0097] determining an average of the return air temperature values ​​detected by the plurality of first remaining return air temperature sensors as an average temperature value in the vehicle compartment;

[0098] In combination with the solar radiation effect on the rail train, a first return air temperature sensor located on a light-facing side of an inner side wall of the passenger compartment and a second return air temperature sensor located on a backlight side of the inner side wall of the passenger compartment are selected from the plurality of first remaining return air temperature sensors;

[0099] determining a temperature difference between a return air temperature value detected by the first return air temperature sensor and a return air temperature value detected by the second return air temperature sensor;

[0100] If the temperature difference is greater than a preset difference threshold, determining a first absolute value of the difference between the return air temperature value detected by the first return air temperature sensor and the average temperature value, and a second absolute value of the difference between the return air temperature value detected by the second return air temperature sensor and the average temperature value;

[0101] comparing the first absolute value and the second absolute value;

[0102] If the first absolute value is greater than the second absolute value, determining the first return air temperature sensor as a false alarm return air temperature sensor;

[0103] If the second absolute value is greater than the first absolute value, the second return air temperature sensor is determined to be a false alarm return air temperature sensor.

[0104] Please refer to Figure 5 , which is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. As shown in Figure 5 , the electronic device 500 includes a processor 510 , a memory 520 , and a bus 530 .

[0105] The memory 520 stores machine-readable instructions executable by the processor 510. When the electronic device 500 is running, the processor 510 communicates with the memory 520 via the bus 530. When the machine-readable instructions are executed by the processor 510, the steps of a method for controlling an air-conditioning unit in a rail train in the method embodiment shown in Figure 1 above can be executed. The specific implementation method can be found in the method embodiment and will not be repeated here.

[0106] An embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is run by a processor, it can execute the steps of a method for controlling an air-conditioning unit in a rail train in the method embodiment shown in Figure 1 above. The specific implementation method can be found in the method embodiment and will not be repeated here.

[0107] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0108] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. There may be other division methods in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed may be through some communication interface, indirect coupling or communication connection of devices or units, which may be electrical, mechanical or other forms.

[0109] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0110] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0111] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0112] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The scope of protection of the present application is not limited thereto. Although the present application has been described in detail with reference to the above-mentioned embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-mentioned embodiments within the technical scope disclosed in the present application, or perform equivalent replacements for some of the technical features thereof. These modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A control method for an air conditioning unit in a rail train, characterized in that: The rail train is equipped with an air conditioning unit; a plurality of return air temperature sensors are installed on the inner side wall of the passenger compartment where each air conditioning unit is located; the control method comprises: For each air conditioning unit, obtaining return air temperature values ​​detected by multiple return air temperature sensors corresponding to the air conditioning unit; Determine whether there is a faulty return air temperature sensor according to the return air temperature value detected by each return air temperature sensor; If so, removing the return air temperature value detected by the faulty return air temperature sensor from the return air temperature values ​​detected by the multiple return air temperature sensors to obtain the return air temperature values ​​detected by the multiple first remaining return air temperature sensors; Determining whether there is a false alarm return air temperature sensor according to the return air temperature values ​​detected by the plurality of first remaining return air temperature sensors; If so, removing the return air temperature value detected by the falsely reported return air temperature sensor from the return air temperature values ​​detected by the plurality of first remaining return air temperature sensors to obtain the return air temperature value detected by the second remaining return air temperature sensor; The operating parameters of the air conditioning unit are adjusted according to the return air temperature value detected by the second residual return air temperature sensor.

2. The control method according to claim 1, characterized in that: The step of determining whether there is a faulty return air temperature sensor according to the return air temperature value detected by each return air temperature sensor includes: If the return air temperature value detected by any return air temperature sensor exceeds the temperature range and lasts for a preset time, the return air temperature sensor is determined to be a faulty return air temperature sensor.

3. The control method according to claim 1, characterized in that: Determining whether there is a false alarm return air temperature sensor according to the return air temperature values ​​detected by the plurality of first remaining return air temperature sensors includes: determining an average value of the return air temperature values ​​detected by the plurality of first remaining return air temperature sensors as an average temperature value in the vehicle compartment; In combination with the radiation effect of the sun on the rail train, a first return air temperature sensor located on the light-facing side of the inner side wall of the passenger compartment and a second return air temperature sensor located on the backlight side of the inner side wall of the passenger compartment are selected from the plurality of first remaining return air temperature sensors; determining an absolute value of a temperature difference between a return air temperature value detected by the first return air temperature sensor and a return air temperature value detected by the second return air temperature sensor; If the absolute value of the temperature difference is greater than a preset difference threshold, determining a first absolute value of the difference between the return air temperature value detected by the first return air temperature sensor and the average temperature value, and a second absolute value of the difference between the return air temperature value detected by the second return air temperature sensor and the average temperature value; comparing the first absolute value and the second absolute value; If the first absolute value is greater than the second absolute value, determining the first return air temperature sensor as a false alarm return air temperature sensor; If the second absolute value is greater than the first absolute value, the second return air temperature sensor is determined to be a false alarm return air temperature sensor.

4. The control method according to claim 1, characterized in that: According to the return air temperature value detected by the second residual return air temperature sensor, the operating parameters of the air conditioning unit are adjusted, including: The operating mode, supply air volume and supply air temperature of the air conditioning unit are adjusted according to the return air temperature value detected by the second remaining return air temperature sensor and the target temperature value.

5. The method according to claim 1, characterized in that A fresh air temperature sensor is installed at the fresh air outlet of each air conditioning unit; the control method further includes: Acquire the fresh air temperature value detected by the fresh air temperature sensor of each air conditioning unit in the entire train of the rail train; The highest temperature value and the lowest temperature value among the fresh air temperature values ​​detected by the fresh air temperature sensor of each air conditioning unit are removed, and the average value of the remaining temperature values ​​is determined as the actual fresh air temperature value; The operating parameters of the air conditioning unit are adjusted according to the return air temperature value detected by the second residual return air temperature sensor and the actual fresh air temperature value.

6. A control device for an air conditioning unit in a rail train, characterized in that: The rail train is equipped with an air conditioning unit; a plurality of return air temperature sensors are installed on the inner side wall of the passenger compartment where each air conditioning unit is located; the control device comprises: An acquisition module, used for acquiring, for each air conditioning unit, return air temperature values ​​detected by multiple return air temperature sensors corresponding to the air conditioning unit; A fault determination module, used to determine whether there is a faulty return air temperature sensor based on the return air temperature value detected by each return air temperature sensor; a fault removal module, for removing the return air temperature value detected by the faulty return air temperature sensor from the return air temperature values ​​detected by the multiple return air temperature sensors, if any, to obtain the return air temperature values ​​detected by the multiple first remaining return air temperature sensors; a false alarm determination module, used to determine whether there is a false alarm return air temperature sensor according to the return air temperature values ​​detected by the plurality of first remaining return air temperature sensors; a false alarm removal module, for removing the return air temperature value detected by the return air temperature sensor with a false alarm from the return air temperature values ​​detected by the plurality of first remaining return air temperature sensors, if any, to obtain the return air temperature value detected by the second remaining return air temperature sensor; The regulating module is used to regulate the operating parameters of the air conditioning unit according to the return air temperature value detected by the second residual return air temperature sensor.

7. The control device according to claim 6, characterized in that: When the fault determination module is used to determine whether there is a faulty return air temperature sensor according to the return air temperature value detected by each return air temperature sensor, the fault determination module is used to: If the return air temperature value detected by any return air temperature sensor exceeds the temperature range and lasts for a preset time, the return air temperature sensor is determined to be a faulty return air temperature sensor.

8. The control device according to claim 6, characterized in that: When the false alarm determination module is used to determine whether there is a false alarm return air temperature sensor according to the return air temperature values ​​detected by the plurality of first remaining return air temperature sensors, the false alarm determination module is used to: determining an average value of the return air temperature values ​​detected by the plurality of first remaining return air temperature sensors as an average temperature value in the vehicle compartment; In combination with the radiation effect of the sun on the rail train, a first return air temperature sensor located on the light-facing side of the inner side wall of the passenger compartment and a second return air temperature sensor located on the backlight side of the inner side wall of the passenger compartment are selected from the plurality of first remaining return air temperature sensors; determining a temperature difference between a return air temperature value detected by the first return air temperature sensor and a return air temperature value detected by the second return air temperature sensor; If the temperature difference is greater than a preset difference threshold, determining a first absolute value of the difference between the return air temperature value detected by the first return air temperature sensor and the average temperature value, and a second absolute value of the difference between the return air temperature value detected by the second return air temperature sensor and the average temperature value; comparing the first absolute value and the second absolute value; If the first absolute value is greater than the second absolute value, determining the first return air temperature sensor as a false alarm return air temperature sensor; If the second absolute value is greater than the first absolute value, the second return air temperature sensor is determined to be a false alarm return air temperature sensor.

9. An electronic device, characterized in that: include: A processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor and the memory communicate via the bus, and when the machine-readable instructions are run by the processor, the steps of a method for controlling an air-conditioning unit in a rail train as described in any one of claims 1 to 5 are executed.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for controlling an air-conditioning unit in a rail train as claimed in any one of claims 1 to 5 are executed.