Control methods and devices

Abstract

This disclosure provides a control method and apparatus applicable to the field of in-vehicle environment control technology. The control method includes: receiving multiple sets of pressure signals corresponding to multiple time windows within a predetermined time period, provided that the altitude of the train's current geographical location meets preset altitude conditions; determining, based on the multiple sets of pressure signals, the target pressure relief mode to be executed from M predetermined pressure relief modes; generating a target pressure relief control command based on the target pressure relief mode; and sending a first oxygen generation control command to an oxygen generator to control the oxygen generator to deliver oxygen to the train compartment according to a first oxygen generation flow rate range.

Description

Technical Field

[0001] This disclosure relates to the field of in-vehicle environment control technology, and more specifically to a control method, device, equipment, medium, and program product. Background Technology

[0002] When rail vehicles operate at high altitudes, measures such as oxygen generation, ventilation, and internal pressure protection may be required to maintain a comfortable environment inside the vehicle. Currently, the control of oxygen generation, ventilation, and internal pressure protection is done separately. This may lead to some problems. For example, when high-speed trains operate at high altitudes or in long tunnels, the internal pressure protection valve is closed for a long time while the passenger compartment is being oxygenated. When operating in continuous tunnel groups, the pressure protection valve frequently operates, which will have an adverse effect on controlling the concentration of oxygen and carbon dioxide and the fluctuation of internal pressure. Summary of the Invention

[0003] In view of the above problems, this disclosure provides a control method, apparatus, device, medium and program product.

[0004] One aspect of this disclosure provides a control method comprising:

[0005] When the altitude of the train's current location meets the preset altitude conditions, the train receives multiple sets of pressure signals corresponding to multiple time windows within a predetermined time period, sent by the pressure measuring device. Each set of pressure signals includes external pressure and internal pressure.

[0006] When determining the activation pressure protection mode based on multiple pressure signals, the target pressure relief mode to be executed is determined from M predetermined pressure relief modes based on multiple pressure signals.

[0007] Target pressure relief control commands are generated based on the target pressure relief mode. These commands are used to control the air conditioning fresh air valve and pressure protection valve to be intermittently open according to the target time interval.

[0008] Send a first oxygen generation control command to the oxygen generation device to control the oxygen generation device to deliver oxygen to the train compartment according to the first oxygen generation flow range.

[0009] According to embodiments of this disclosure, the above method further includes:

[0010] If the pressure protection mode is not activated based on multiple pressure signals, a valve opening command is generated. The valve opening command is used to control the air conditioning fresh air valve and the pressure protection valve to remain in the normally open state.

[0011] A second oxygen generation control command is sent to the oxygen generation device to control the oxygen generation device to deliver oxygen to the train compartment according to a second oxygen generation flow range, wherein the value of the second oxygen generation flow range is greater than the value of the first oxygen generation flow range.

[0012] According to embodiments of this disclosure, determining the target pressure relief mode to be executed from M predetermined pressure relief modes based on multiple sets of pressure signals includes:

[0013] Multiple sets of pressure difference values ​​between the vehicle's exterior and interior are calculated based on the external and internal pressures, corresponding to multiple time windows.

[0014] The target pressure difference value is determined based on multiple sets of vehicle interior and exterior pressure difference values, wherein the duration of the target pressure difference value within a predetermined time period is greater than a preset duration threshold.

[0015] Select the target pressure relief mode that matches the target pressure difference value from M predetermined pressure relief modes.

[0016] According to embodiments of this disclosure, M predetermined pressure relief modes correspond to M differential pressure ranges, and determining the target pressure relief mode that matches the target differential pressure value from the M predetermined pressure relief modes includes:

[0017] Determine the target differential pressure range that matches the target differential pressure value from the M differential pressure ranges;

[0018] The predetermined pressure relief mode corresponding to the target pressure differential range is determined as the target pressure relief mode.

[0019] According to embodiments of this disclosure, wherein:

[0020] M predetermined pressure relief modes correspond to M differential pressure ranges. The predetermined pressure relief modes are used to continuously perform predetermined intermittent operations on the air conditioning fresh air valve and the pressure protection valve. The predetermined intermittent operation is as follows: after opening the air conditioning fresh air valve and the pressure protection valve for a first duration, the air conditioning fresh air valve and the pressure protection valve are closed for a second duration.

[0021] When the value of the Nth differential pressure range is greater than the value of the Lth differential pressure range, the value of the first duration associated with the Nth predetermined pressure relief mode is less than the first duration associated with the Lth predetermined pressure relief mode, and the value of the second duration associated with the Nth predetermined pressure relief mode is greater than the second duration associated with the Lth predetermined pressure relief mode, where N≠L, N≤M, and L≤M.

[0022] According to embodiments of this disclosure, the above method further includes:

[0023] Multiple sets of pressure difference values ​​between the vehicle's exterior and interior are calculated based on the external and internal pressures, corresponding to multiple time windows.

[0024] The rate of change of the pressure difference between the inside and outside of the vehicle within a predetermined time period is calculated based on multiple sets of pressure difference values ​​between the inside and outside of the vehicle.

[0025] Whether to activate the pressure protection device is determined based on the pressure difference between the inside and outside of the vehicle and the rate of change of the pressure difference between the inside and outside of the vehicle.

[0026] According to embodiments of this disclosure, determining whether to activate the pressure protection device based on the vehicle-to-inside-outside pressure difference value and the rate of change of the vehicle-to-inside-outside pressure difference includes:

[0027] If the pressure difference between the inside and outside of the vehicle is greater than the first preset pressure difference threshold, and the rate of change of the pressure difference between the inside and outside of the vehicle is greater than the first preset rate of change threshold, the pressure protection device will be activated.

[0028] If the pressure difference between the inside and outside of the vehicle is less than or equal to the second preset pressure difference threshold, and the rate of change of the pressure difference between the inside and outside of the vehicle is less than or equal to the second preset rate of change threshold, it is determined that the pressure protection device will not be activated, wherein the first preset pressure difference threshold is greater than or equal to the second preset pressure difference threshold, and the first preset rate of change threshold is greater than or equal to the second preset rate of change threshold.

[0029] According to embodiments of this disclosure, sending a first oxygen generation control command to the oxygen generator includes:

[0030] Receives the carbon dioxide concentration signal inside the vehicle sent by the air detection device;

[0031] The target operating frequency to be executed by the oxygen generator is determined based on the first oxygen flow range and the in-vehicle carbon dioxide concentration signal.

[0032] The first oxygen generation control command is sent to the oxygen generation device based on the target operating frequency.

[0033] According to embodiments of this disclosure, the above method further includes:

[0034] If the altitude of the train's current location does not meet the preset altitude conditions, it receives multiple pressure signals sent by the pressure measuring device.

[0035] Determine whether to activate the pressure protection mode based on multiple sets of pressure signals;

[0036] When the pressure protection mode is activated, a valve closing command is generated. This valve closing command is used to control the air conditioning fresh air valve and the pressure protection valve to remain in a normally closed state.

[0037] Send a third oxygen generation control command to the oxygen generator to control the oxygen generator to stop generating oxygen.

[0038] According to embodiments of this disclosure, the above method further includes:

[0039] Without activating the pressure protection mode, a valve opening command is generated, which is used to control the air conditioning fresh air valve and the pressure protection valve to remain in the normally open state.

[0040] Send a third oxygen generation control command to the oxygen generator to control the oxygen generator to stop generating oxygen.

[0041] According to embodiments of this disclosure, the above method further includes:

[0042] Before the train enters the tunnel, obtain the first distance value between the train and the tunnel entrance;

[0043] If the first distance value is less than or equal to a preset distance threshold, the pressure protection mode is activated;

[0044] The system determines whether to maintain the pressure protection mode based on multiple pressure signals.

[0045] According to embodiments of this disclosure, the above method further includes:

[0046] When the train is in the tunnel and the pressure protection mode is not activated, obtain the second distance value between the train and the tunnel exit.

[0047] If the second distance value is less than or equal to the preset distance threshold, the pressure protection mode will be activated.

[0048] Another aspect of this disclosure provides a control device, comprising:

[0049] The first receiving module is used to receive multiple sets of pressure signals corresponding to multiple time windows within a predetermined time period, provided that the altitude of the train's current geographical location meets the preset altitude conditions. Each set of pressure signals includes external pressure and internal pressure.

[0050] The first determining module is used to determine the target pressure relief mode to be executed from M predetermined pressure relief modes based on multiple pressure signals when the activation pressure protection mode is determined based on multiple pressure signals.

[0051] The first generation module is used to generate target pressure relief control instructions based on the target pressure relief mode. The target pressure relief control instructions are used to control the air conditioning fresh air valve and the pressure protection valve to be in an intermittent opening state according to the target time interval.

[0052] The first transmitting module is used to send a first oxygen generation control command to the oxygen generation device to control the oxygen generation device to deliver oxygen to the train compartment according to the first oxygen generation flow range.

[0053] According to embodiments of this disclosure, the above-described apparatus further includes:

[0054] The second generation module is used to generate a valve opening command when it is determined that the pressure protection mode will not be activated based on multiple pressure signals. The valve opening command is used to control the air conditioning fresh air valve and the pressure protection valve to remain in the normally open state.

[0055] The second sending module is used to send a second oxygen generation control command to the oxygen generation device to control the oxygen generation device to deliver oxygen to the train compartment according to a second oxygen generation flow range, wherein the value of the second oxygen generation flow range is greater than the value of the first oxygen generation flow range.

[0056] According to embodiments of this disclosure, the first determining module includes:

[0057] The calculation unit is used to calculate multiple sets of pressure difference values ​​between the inside and outside of the vehicle corresponding to multiple time windows based on the external pressure and the internal pressure of the vehicle.

[0058] The first determining unit is used to determine the target pressure difference value based on multiple sets of vehicle interior and exterior pressure difference values, wherein the duration of the target pressure difference value within a predetermined time period is greater than a preset duration threshold.

[0059] The second determining unit is used to determine the target pressure relief mode that matches the target pressure difference value from M predetermined pressure relief modes.

[0060] According to embodiments of this disclosure, wherein the M predetermined pressure relief modes correspond to the M differential pressure ranges, and the second determining unit includes:

[0061] The first determining subunit is used to determine the target differential pressure range that matches the target differential pressure value from M differential pressure ranges;

[0062] The second determining subunit is used to determine the predetermined pressure relief mode corresponding to the target pressure differential range as the target pressure relief mode.

[0063] According to embodiments of this disclosure, wherein:

[0064] M predetermined pressure relief modes correspond to M differential pressure ranges. The predetermined pressure relief modes are used to continuously perform predetermined intermittent operations on the air conditioning fresh air valve and the pressure protection valve. The predetermined intermittent operation is as follows: after opening the air conditioning fresh air valve and the pressure protection valve for a first duration, the air conditioning fresh air valve and the pressure protection valve are closed for a second duration.

[0065] When the value of the Nth differential pressure range is greater than the value of the Lth differential pressure range, the value of the first duration associated with the Nth predetermined pressure relief mode is less than the first duration associated with the Lth predetermined pressure relief mode, and the value of the second duration associated with the Nth predetermined pressure relief mode is greater than the second duration associated with the Lth predetermined pressure relief mode, where N≠L, N≤M, and L≤M.

[0066] According to embodiments of this disclosure, the above-described apparatus further includes:

[0067] The first calculation module is used to calculate multiple sets of pressure difference values ​​between the inside and outside of the vehicle corresponding to multiple time windows based on the external pressure and the internal pressure of the vehicle.

[0068] The second calculation module is used to calculate the rate of change of the pressure difference between the inside and outside of the vehicle within a predetermined time period based on multiple sets of pressure difference values ​​between the inside and outside of the vehicle.

[0069] The second determining module is used to determine whether to activate the pressure protection device based on the pressure difference value inside and outside the vehicle and the rate of change of the pressure difference inside and outside the vehicle.

[0070] According to embodiments of this disclosure, the second determining module includes:

[0071] The third determining unit is used to determine to activate the pressure protection device when the pressure difference between the inside and outside of the vehicle is greater than the first preset pressure difference threshold and the rate of change of the pressure difference between the inside and outside of the vehicle is greater than the first preset rate of change threshold.

[0072] The fourth determining unit is used to determine that the pressure protection device will not be activated when the pressure difference between the inside and outside of the vehicle is less than or equal to the second preset pressure difference threshold and the rate of change of the pressure difference between the inside and outside of the vehicle is less than or equal to the second preset rate of change threshold, wherein the first preset pressure difference threshold is greater than or equal to the second preset pressure difference threshold and the first preset rate of change threshold is greater than or equal to the second preset rate of change threshold.

[0073] According to embodiments of this disclosure, the first transmitting module includes:

[0074] The receiving unit is used to receive the carbon dioxide concentration signal inside the vehicle sent by the air detection device;

[0075] The fifth determining unit is used to determine the target operating frequency to be executed by the oxygen generating device based on the first oxygen production flow range and the carbon dioxide concentration signal inside the vehicle.

[0076] The transmitting unit is used to send a first oxygen generation control command to the oxygen generating device based on the target operating frequency.

[0077] According to embodiments of this disclosure, the above-described apparatus further includes:

[0078] The second receiving module is used to receive multiple pressure signals sent by the pressure measuring device when the altitude of the train's current geographical location does not meet the preset altitude conditions.

[0079] The third determining module is used to determine whether to activate the pressure protection mode based on multiple sets of pressure signals.

[0080] The third generation module is used to generate valve closing commands when the pressure protection mode is activated. The valve closing commands are used to control the air conditioning fresh air valve and the pressure protection valve to remain in a normally closed state.

[0081] The third sending module is used to send a third oxygen generation control command to the oxygen generator to control the oxygen generator to stop generating oxygen.

[0082] According to embodiments of this disclosure, the above-described apparatus further includes:

[0083] The fourth generation module is used to generate valve opening commands without activating the pressure protection mode. The valve opening commands are used to control the air conditioning fresh air valve and the pressure protection valve to remain in the normally open state.

[0084] The fourth sending module is used to send a third oxygen generation control command to the oxygen generator to control the oxygen generator to stop generating oxygen.

[0085] According to embodiments of this disclosure, the above-described apparatus further includes:

[0086] The first acquisition module is used to acquire the first distance value between the train and the tunnel entrance before the train enters the tunnel.

[0087] The startup module is used to activate the pressure protection mode when the first distance value is less than or equal to a preset distance threshold.

[0088] The fourth determination module is used to determine whether to maintain the pressure protection mode based on multiple sets of pressure signals.

[0089] According to embodiments of this disclosure, the above-described apparatus further includes:

[0090] The second acquisition module is used to acquire the second distance value between the train and the tunnel exit when the pressure protection mode is not activated in the tunnel.

[0091] The fifth determining module is used to determine whether to activate the pressure protection mode when the second distance value is less than or equal to a preset distance threshold.

[0092] Another aspect of this disclosure provides an electronic device comprising: one or more processors; and a memory for storing one or more programs, wherein, when the one or more programs are executed by the one or more processors, the one or more processors perform the control method described above.

[0093] Another aspect of this disclosure provides a computer-readable storage medium having executable instructions stored thereon, which, when executed by a processor, cause the processor to perform the control method described above.

[0094] Another aspect of this disclosure provides a computer program product, including a computer program that, when executed by a processor, implements the above-described control method.

[0095] The control method of this disclosure embodiment can achieve coordinated control of train air conditioning, oxygen generation, and pressure protection. When the pressure protection mode is activated, by executing the pressure relief mode, the pressure protection valve and the air conditioning fresh air valve are intermittently opened, reducing the pressure difference between the inside and outside of the train to achieve pressure protection. A small amount of fresh air can also be introduced to maintain a relatively high air quality inside the train. Furthermore, in this situation, because the air conditioning fresh air valve is opened intermittently, the amount of waste air discharged is small. By controlling the oxygen generation device to operate at a lower frequency, the oxygen supply inside the train is reduced, and the oxygen concentration inside the train is controlled within a suitable range. This reduces the energy consumption of the oxygen generator while meeting the air quality requirements, achieving energy conservation. As can be seen, the above method achieves coordinated control of the train's air conditioning unit, oxygen generator, and pressure protection device. It solves the problems of low comfort in the in-vehicle air environment caused by the inability to coordinate single-element control of the air conditioning, oxygen generator, and in-vehicle pressure protection system when the high-speed train is running at high altitudes and in long tunnels, resulting in oxygen deficiency in the passenger compartment, high carbon dioxide concentration, and large pressure fluctuations in the in-vehicle. It can achieve coordinated control of the in-vehicle air conditioning (ventilation, cooling, and heating), oxygen generator, and in-vehicle pressure waves, saving the cost of vehicle air conditioning and oxygen generator system components and the energy consumption of the air conditioning system, and improving the comfort of the in-vehicle air environment. Attached Figure Description

[0096] The foregoing contents, as well as other objects, features, and advantages of this disclosure, will become clearer from the following description of embodiments with reference to the accompanying drawings, in which:

[0097] Figure 1 A flowchart illustrating a control method according to an embodiment of the present disclosure is shown schematically.

[0098] Figure 2 A schematic diagram illustrating the system architecture of the control method applicable to embodiments of the present disclosure is shown.

[0099] Figure 3 The diagram illustrates the control principle of the control method according to an embodiment of the present disclosure;

[0100] Figure 4 A flowchart illustrating a control method according to another embodiment of the present disclosure is shown schematically;

[0101] Figure 5 A flowchart illustrating a control method according to another embodiment of the present disclosure is shown schematically;

[0102] Figure 6 A flowchart illustrating a control method according to another embodiment of the present disclosure is shown schematically;

[0103] Figure 7 A schematic block diagram of a control device according to an embodiment of the present disclosure is shown; and

[0104] Figure 8A block diagram schematically illustrates an electronic device suitable for implementing a control method according to an embodiment of the present disclosure. Detailed Implementation

[0105] The embodiments of the present disclosure will now be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the disclosure. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of the embodiments of the present disclosure for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts of the present disclosure.

[0106] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0107] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0108] When using expressions such as "at least one of A, B, and C", they should generally be interpreted in accordance with the meaning that is commonly understood by a person skilled in the art (e.g., "a system having at least one of A, B, and C" should include, but is not limited to, a system having A alone, a system having B alone, a system having C alone, a system having A and B, a system having A and C, a system having B and C, and / or a system having A, B, and C, etc.).

[0109] Embodiments of this disclosure provide a control method, including:

[0110] When the altitude of the train's current location meets the preset altitude conditions, the system receives multiple sets of pressure signals corresponding to various time windows within a predetermined time period, sent by a pressure measuring device. Each set of pressure signals includes external pressure and internal pressure. If a pressure protection mode is determined to be activated based on the multiple sets of pressure signals, a target pressure relief mode to be executed is determined from M predetermined pressure relief modes based on the multiple sets of pressure signals. A target pressure relief control command is generated based on the target pressure relief mode, wherein the target pressure relief control command is used to control the air conditioning fresh air valve and the pressure protection valve to be intermittently open at a target time interval. A first oxygen production control command is sent to the oxygen production device to control the oxygen production device to deliver oxygen to the train compartment according to a first oxygen production flow range.

[0111] Figure 1 A flowchart illustrating a control method according to an embodiment of the present disclosure is shown schematically.

[0112] like Figure 1 As shown, the control method of this embodiment includes operations S101 to S104.

[0113] When operating S101, if the altitude of the train's current geographical location meets the preset altitude conditions, the train receives multiple sets of pressure signals corresponding to multiple time windows within a predetermined time period, sent by the pressure measuring device. Each set of pressure signals includes external pressure and internal pressure.

[0114] In operation S102, when the pressure protection mode is determined to be activated based on multiple pressure signals, the target pressure relief mode to be executed is determined from M predetermined pressure relief modes based on multiple pressure signals, where M is a positive integer.

[0115] In operation S103, a target pressure relief control command is generated based on the target pressure relief mode. The target pressure relief control command is used to control the air conditioning fresh air valve and the pressure protection valve to be in an intermittently open state according to the target time interval.

[0116] In operation S104, a first oxygen generation control command is sent to the oxygen generation device to control the oxygen generation device to deliver oxygen to the train compartment according to the first oxygen generation flow range.

[0117] Figure 2 A schematic diagram of a system architecture to which the control method of embodiments of the present disclosure can be applied is shown. Figure 3 The diagram illustrates the control principle of the control method according to an embodiment of the present disclosure.

[0118] The following combination Figure 1 , Figure 2 , Figure 3 The control method of the present disclosure embodiments will be described.

[0119] The method of this disclosure is applied to the scenario of controlling the environment inside a train.

[0120] like Figure 2 As shown, a system to which the control method of the present disclosure can be applied includes a controller, an air conditioning unit (passenger compartment air conditioner), an oxygen generator, and a pressure protection device.

[0121] Air conditioning units are mainly used for ventilation inside train carriages, such as providing fresh air, exhausting waste gas, diluting carbon dioxide concentration inside the carriage, and providing cooling and heating. The method in this disclosure mainly involves controlling the fresh air handling unit of the passenger compartment air conditioning unit, controlling the flow rate of fresh air by opening or closing the fresh air valve of the fresh air handling unit.

[0122] The pressure protection device is equipped with a pressure protection valve, which is mainly used to regulate the pressure inside the vehicle by opening and closing the pressure protection valve, providing pressure protection for the passenger compartment and preventing excessive pressure fluctuations inside the vehicle.

[0123] The oxygen generator is mainly used to produce oxygen and deliver it into the train carriages.

[0124] The collaborative controller is used to execute the control method of the present disclosure embodiment, perform signal processing on various received signals, and generate various control commands to control the operation of the air conditioning unit, oxygen generator, and pressure protection device.

[0125] For example, the coordination controller can control the opening or closing status of the air conditioning fresh air valve and pressure protection valve by issuing control commands, thereby controlling the working status of the air conditioning unit and pressure protection device. The opening or closing status of the air conditioning fresh air valve and pressure protection valve can include three states: intermittently open, normally open, and normally closed.

[0126] For example, the coordinated controller can control the oxygen generator to operate at different frequencies by issuing control commands, which may include high-speed oxygen generation, low-speed oxygen generation, and oxygen generation stop.

[0127] The control method of this disclosure can realize the coordinated control of train air conditioning unit, oxygen generation device and pressure protection device.

[0128] like Figure 3 As shown, different control strategies can be adopted when the train is running in plateau areas above 3000m and in plain areas below 3000m. The control methods for altitudes above 3000m will be explained first below.

[0129] Combination Figure 1 , Figure 3When the altitude of the train's current location meets a preset altitude condition—specifically, when the altitude of the train's current location is greater than a preset altitude threshold, such as greater than 3000m—the train is operating in a plateau region. In operation S101, multiple sets of pressure signals corresponding to multiple time windows within a predetermined time period are received from a pressure measuring device (e.g., pressure wave sensors installed in the front and rear cars). The predetermined time period can be any preset time period, specifically a time period of a predetermined length prior to the current moment, such as 1 minute before the current moment, 2 minutes before the current moment, 3 minutes before the current moment, etc. Multiple sets of pressure signals correspond to multiple time windows within the predetermined time period. For example, if the pressure measuring device collects a pressure signal every 5 seconds, then within the minute before the current moment, there are 12 sets of pressure signals, representing the pressure collected in the previous 5 seconds, 10 seconds, ..., 60 seconds. Each set of pressure signals includes external pressure and internal pressure.

[0130] When operating S102, you can first determine whether to activate the pressure protection mode based on multiple pressure signals. If you determine that the pressure protection mode should be activated, then use the pressure relief mode.

[0131] Specifically, the target pressure relief mode to be executed can be determined from M predetermined pressure relief modes based on multiple pressure signals. After generating the target pressure relief control command based on the target pressure relief mode in operation S103, pressure relief control commands are sent to the air conditioning unit and the pressure protection device respectively to control the air conditioning fresh air valve and the pressure protection valve to be in an intermittently open state (or intermittently closed state) according to the target time interval. For example, the pressure difference between inside and outside the vehicle can be calculated based on multiple pressure signals, and the target time interval for the air conditioning fresh air valve and the pressure protection valve to be in an intermittently open state can be determined according to the magnitude of the pressure difference, so that the air conditioning fresh air valve and the pressure protection valve can perform intermittent opening or closing according to the determined time interval. For example, the larger the pressure difference between inside and outside the vehicle, the longer the time interval for intermittent opening and the shorter the time in the intermittent open state. That is, the larger the pressure difference between inside and outside the vehicle, the shorter the time interval for intermittent closing and the longer the time in the intermittent closed state.

[0132] According to embodiments of this disclosure, by executing a pressure relief mode, the pressure protection valve and the air conditioning fresh air valve are intermittently switched to reduce the pressure difference between the inside and outside of the vehicle and to allow a small amount of fresh air to enter, thereby maintaining a high level of air quality inside the vehicle.

[0133] According to embodiments of this disclosure, such as Figure 3As shown, when the pressure protection mode is activated, while sending pressure relief control commands to the air conditioning unit and the pressure protection device respectively, a first oxygen generation control command is sent to the oxygen generation device via operation S104 to control the oxygen generation device to deliver oxygen to the train compartment according to the first oxygen generation flow range. In this mode, the oxygen generation device operates at a lower frequency, and the oxygen generation capacity is lower.

[0134] In related technologies, the air conditioning units, oxygen generators, and pressure protection devices in trains are mostly controlled independently, making the control relatively simple. For example, the oxygen generator is controlled based on altitude. Below 3000m altitude, the oxygen generator automatically shuts down, while above 3000m, it automatically starts, resulting in frequent start-stop cycles. The fresh air volume of the air conditioning is fixed at a minimum. The pressure wave protection system is controlled independently, unrelated to oxygen generation and air conditioning. Because the passenger compartment air conditioning, oxygen generator, and pressure protection system are controlled individually, the comfort level of the air environment inside the train is low. For example, when high-speed trains operate at high altitudes or through long tunnels, while oxygen is being added to the passenger compartment, the pressure protection valve remains closed for extended periods. When operating through continuous tunnels, the pressure protection valve frequently activates, adversely affecting the control of oxygen and carbon dioxide concentrations and pressure fluctuations inside the train.

[0135] The control method of this disclosure embodiment can achieve coordinated control of the train's air conditioning unit, oxygen generator, and pressure protection device. When the pressure protection mode is activated, by executing the pressure relief mode, the pressure protection valve and the air conditioning fresh air valve are intermittently opened, reducing the pressure difference between the inside and outside of the train to achieve pressure protection. A small amount of fresh air can also be introduced to maintain a relatively high air quality inside the train. Furthermore, in this situation, because the air conditioning fresh air valve is opened intermittently, the amount of waste air discharged is small. By controlling the oxygen generator to operate at a lower frequency, the oxygen supply inside the train is reduced, and the oxygen concentration inside the train is controlled within a suitable range. This reduces the energy consumption of the oxygen generator while meeting the air quality requirements, achieving energy conservation. As can be seen, the above method achieves coordinated control of the train's air conditioning unit, oxygen generator, and pressure protection device. It solves the problems of low comfort in the in-vehicle air environment caused by the inability to coordinate single-element control of the air conditioning, oxygen generator, and in-vehicle pressure protection system when the high-speed train is running at high altitudes and in long tunnels, resulting in oxygen deficiency in the passenger compartment, high carbon dioxide concentration, and large pressure fluctuations in the in-vehicle. It can achieve coordinated control of the in-vehicle air conditioning (ventilation, cooling, and heating), oxygen generator, and in-vehicle pressure waves, saving the cost of vehicle air conditioning and oxygen generator system components and the energy consumption of the air conditioning system, and improving the comfort of the in-vehicle air environment.

[0136] According to embodiments of this disclosure, such as Figure 3As shown, another feasible implementation method is: when the pressure protection mode is activated, valve closing commands are sent to the air conditioning unit and the pressure protection device respectively, so that the air conditioning fresh air valve and the pressure protection valve are in a normally closed state. At the same time, a first oxygen generation control command is sent to the oxygen generation device to control the oxygen generation device to operate at a lower frequency and produce less oxygen.

[0137] For example, when the train is running at high altitude, if the pressure protection conditions are met based on the pressure inside and outside the train, the pressure protection device inside the train will activate, shutting off the fresh air and exhaust valves inside the passenger compartment air conditioning unit, cutting off the air passage between the inside and outside of the train, thereby achieving pressure protection inside the train; at the same time, the air conditioning controller will control the oxygen generating device to run at low speed, reducing the amount of oxygen supplied inside the train, thereby controlling the oxygen concentration inside the train within a suitable range.

[0138] According to embodiments of this disclosure, the M predetermined pressure relief modes can be multiple different preset pressure relief modes. The predetermined pressure relief modes are used to continuously perform predetermined intermittent operations on the air conditioning fresh air valve and the pressure protection valve, wherein the predetermined intermittent operation is: opening the air conditioning fresh air valve and the pressure protection valve for a first duration, then closing the air conditioning fresh air valve and the pressure protection valve for a second duration.

[0139] Specifically, in several different pressure relief modes, the first duration for opening the air conditioning fresh air valve and the pressure protection valve is different, and / or the second duration for closing the air conditioning fresh air valve and the pressure protection valve is different.

[0140] Specifically, there can be M predetermined pressure relief modes corresponding to M pressure difference ranges (vehicle-inside-outside pressure difference ranges). When the value of the Nth pressure difference range is greater than the value of the Lth pressure difference range, the first duration associated with the Nth predetermined pressure relief mode is less than the first duration associated with the Lth predetermined pressure relief mode, and the second duration associated with the Nth predetermined pressure relief mode is greater than the second duration associated with the Lth predetermined pressure relief mode, where N≠L, N≤M, and L≤M. That is, in different pressure relief modes corresponding to their respective vehicle-inside-outside pressure difference ranges, the larger the vehicle-inside-outside pressure difference value, the shorter the time for opening the air conditioning fresh air valve and the pressure protection valve; conversely, the larger the vehicle-inside-outside pressure difference value, the longer the time for closing the air conditioning fresh air valve and the pressure protection valve.

[0141] For example, the in-vehicle pressure protection decompression mode is illustrated below:

[0142] ① First-level pressure relief mode: The pressure difference range between inside and outside the vehicle is greater than 5000Pa. The pressure protection valve (or the pressure protection valve and the fresh air valve) opens for 2 seconds and closes for 8 seconds.

[0143] ② Second-level pressure relief mode: The pressure difference range between inside and outside the vehicle is 2000Pa~5000Pa. The pressure protection valve (or the pressure protection valve and the fresh air valve) is open for 3 seconds and closed for 7 seconds.

[0144] ③ Three-level pressure relief mode: The pressure difference range between inside and outside the vehicle is 500Pa~2000Pa. The pressure protection valve (or pressure protection valve and fresh air valve) opens for 4 seconds and closes for 6 seconds.

[0145] According to embodiments of this disclosure, determining the target pressure relief mode to be executed from M predetermined pressure relief modes based on multiple sets of pressure signals includes the following operations:

[0146] Operation 11: Calculate multiple sets of pressure difference values ​​between the inside and outside of the vehicle corresponding to multiple time windows based on the external pressure and internal pressure of the vehicle; for example, collect 12 sets of pressure signals within the previous minute before the current moment and calculate the pressure difference values ​​between the inside and outside of the vehicle for 12 sets.

[0147] Operation 12: Determine the target pressure difference value based on multiple sets of vehicle interior and exterior pressure difference values. The target pressure difference value is maintained for a duration greater than a preset duration threshold within a predetermined time period. For example, among the 12 sets of vehicle interior and exterior pressure difference values, the target pressure difference value is maintained for a duration greater than 20 seconds within 1 minute.

[0148] Operation 13: Determine the target pressure relief mode that matches the target pressure difference value from M predetermined pressure relief modes. Specifically, this includes determining the target pressure difference range that matches the target pressure difference value from M pressure difference ranges; and determining the predetermined pressure relief mode corresponding to the target pressure difference range as the target pressure relief mode.

[0149] For example, referring to the three modes of the in-vehicle pressure protection and pressure relief mode in the aforementioned embodiments, the target pressure difference value is 2500Pa. Among the three pressure relief modes, the target pressure difference range that matches the target pressure difference value is 2000Pa to 5000Pa. The corresponding target pressure relief mode is the second-level pressure relief mode: continuously executing the intermittent opening of the pressure protection valve (or the pressure protection valve and the fresh air valve) for 3 seconds and closing for 7 seconds.

[0150] According to the embodiments of this disclosure, the above method determines the pressure relief mode based on the pressure difference between the inside and outside of the vehicle. The greater the pressure difference between the inside and outside of the vehicle, the shorter the time required to open the air conditioning fresh air valve and the pressure protection valve. In this way, the pressure protection state can be adjusted to adapt to different external environments, achieving precise control and pressure protection, while ensuring an appropriate amount of fresh air enters and improving comfort.

[0151] According to embodiments of this disclosure, when the pressure protection mode is activated, the specific method for controlling the oxygen generator, namely sending a first oxygen generation control command to the oxygen generator, includes the following operations:

[0152] Operation 21: Receive the carbon dioxide concentration signal inside the vehicle sent by the air detection device.

[0153] Operation 22: Determine the target operating frequency to be executed by the oxygen generator based on the first oxygen production flow range and the carbon dioxide concentration signal inside the vehicle.

[0154] The first oxygen production flow rate range is a fixed value range set for the pressure protection mode, for example, set to 10-20m. 3 / s, or set to 5-25m 3 / s etc.

[0155] The target operating frequency of the oxygen generator is determined based on the first oxygen flow rate range and the carbon dioxide concentration signal in the vehicle. This can be achieved by selecting an appropriate flow rate range within the first oxygen flow rate range based on the carbon dioxide concentration. The higher the carbon dioxide concentration, the greater the oxygen flow rate, and correspondingly, the higher the operating frequency of the oxygen generator.

[0156] Operation 23: Send a first oxygen generation control command to the oxygen generator based on the target operating frequency to control the oxygen generator to generate oxygen at the set operating frequency.

[0157] According to embodiments of this disclosure, the operating frequency of the oxygen concentrator can also be determined by combining the carbon dioxide concentration, the altitude of the current geographical location, and the oxygen content inside the vehicle to determine the oxygen flow rate of the oxygen concentrator within a first oxygen flow rate range, and then determining the operating frequency of the oxygen concentrator based on the oxygen flow rate.

[0158] The higher the carbon dioxide concentration and the higher the altitude, the lower the oxygen content inside the vehicle, and the higher the operating frequency and oxygen flow rate of the oxygen concentrator. Conversely, the lower the carbon dioxide concentration and the lower the altitude, the higher the oxygen content inside the vehicle, and the lower the operating frequency and oxygen flow rate of the oxygen concentrator.

[0159] According to embodiments of this disclosure, variable frequency control of oxygen production is achieved by combining altitude changes and in-vehicle oxygen and carbon dioxide concentrations through different control strategies.

[0160] According to embodiments of this disclosure, after receiving multiple sets of pressure signals sent by a pressure measuring device, the method of this disclosure further includes determining the activation of a pressure protection mode based on the multiple sets of pressure signals, specifically including:

[0161] Operation 31: Calculate multiple sets of pressure difference values ​​between the outside and inside of the vehicle corresponding to multiple time windows based on the external pressure and the internal pressure of the vehicle; that is, calculate the difference between the external pressure and the internal pressure of the vehicle to obtain the pressure difference value between the inside and outside of the vehicle.

[0162] Operation 32: Calculate the rate of change of the vehicle's internal and external pressure difference within a predetermined time period based on multiple sets of vehicle internal and external pressure difference values. That is, calculate the change in pressure difference per unit time.

[0163] Operation 33: Determine whether to activate the pressure protection device based on the pressure difference value inside and outside the vehicle and the rate of change of the pressure difference inside and outside the vehicle.

[0164] The determination of whether to activate the pressure protection device based on the pressure difference value between the inside and outside of the vehicle and the rate of change of the pressure difference includes:

[0165] If the pressure difference between the inside and outside of the vehicle is greater than the first preset pressure difference threshold, and the rate of change of the pressure difference between the inside and outside of the vehicle is greater than the first preset rate of change threshold, the pressure protection device will be activated.

[0166] If the pressure difference between the inside and outside of the vehicle is less than or equal to the second preset pressure difference threshold, and the rate of change of the pressure difference between the inside and outside of the vehicle is less than or equal to the second preset rate of change threshold, the pressure protection device will not be activated.

[0167] The first preset differential pressure threshold and the second preset differential pressure threshold can be the same or different; the first preset rate of change threshold and the second preset rate of change threshold can be the same or different. The first preset differential pressure threshold is greater than or equal to the second preset differential pressure threshold, and the first preset rate of change threshold is greater than or equal to the second preset rate of change threshold.

[0168] For example, if the pressure difference between the inside and outside of the vehicle is greater than 3000 Pa / s and the rate of change of the pressure difference is greater than 300 Pa / s, the pressure protection device will be activated; if the pressure difference between the inside and outside of the vehicle is less than or equal to 3000 Pa / s and the rate of change of the pressure difference is less than or equal to 300 Pa / s, the pressure protection device will not be activated.

[0169] Alternatively, if the pressure difference between the inside and outside of the vehicle is greater than 3000 Pa / s and the rate of change of the pressure difference is greater than 300 Pa / s, the pressure protection device shall be activated; if the pressure difference between the inside and outside of the vehicle is less than or equal to 2500 Pa / s and the rate of change of the pressure difference is less than or equal to 200 Pa / s, the pressure protection device shall not be activated.

[0170] Figure 4 A flowchart illustrating a control method according to another embodiment of the present disclosure is shown schematically.

[0171] like Figure 4 As shown, the control method of this embodiment includes operations S401 to S403.

[0172] In operation S401, if the altitude of the train's current geographical location meets the preset altitude conditions, multiple sets of pressure signals corresponding to multiple time windows within a predetermined time period are received from the pressure measuring device. The specific method of this operation is the same as the operation in operation S101 in the aforementioned embodiment, and will not be repeated here.

[0173] When operating S402, if it is determined from multiple pressure signals that the pressure protection mode should not be activated, a valve opening command is generated. The valve opening command is used to control the air conditioning fresh air valve and the pressure protection valve to remain in the normally open state.

[0174] In operation S403, a second oxygen production control command is sent to the oxygen production device to control the oxygen production device to deliver oxygen to the train compartment according to the second oxygen production flow range, wherein the value of the second oxygen production flow range is greater than the value of the first oxygen production flow range.

[0175] Combination Figure 3 As shown, this embodiment is a control strategy for situations where the altitude of the train's current geographical location meets preset altitude conditions, specifically, the altitude of the train's current geographical location is greater than a preset altitude threshold, such as when operating in a plateau region with an altitude greater than 3000m, and without activating the pressure protection mode.

[0176] Without activating the pressure protection mode, valve opening commands are sent to the air conditioning unit and the pressure protection device respectively to keep the air conditioning fresh air valve and the pressure protection valve in a normally open state. Simultaneously, a second oxygen generation control command is sent to the oxygen generator to control it to deliver oxygen to the train compartment according to the second oxygen generation flow range. In this mode, the oxygen generator operates at a higher frequency, resulting in a higher oxygen generation capacity.

[0177] As can be seen from the foregoing embodiments, when the pressure protection mode is activated, the oxygen generating device delivers oxygen to the train compartment according to the first oxygen production flow range; here, when the pressure protection mode is not activated, the oxygen generating device delivers oxygen to the train compartment according to the second oxygen production flow range.

[0178] The first oxygen production flow rate range is a fixed value range set for the pressure protection mode, and the second oxygen production flow rate range is a fixed value range set for the non-pressure protection mode. The value in the second oxygen production flow rate range is greater than that in the first oxygen production flow rate range. For example, the first oxygen production flow rate range is set at 10-20 m³ / s, and the second oxygen production flow rate range is set at 50-75 m³ / s. Thus, when the pressure protection mode is activated, because the air conditioning fresh air valve opens intermittently, the amount of waste air discharged is small. By controlling the oxygen generator to operate at a lower frequency, the oxygen supply inside the vehicle is reduced, and the oxygen concentration inside the vehicle is controlled within a suitable range. This reduces the energy consumption of the oxygen generator while meeting the air quality requirements, achieving energy conservation. When the pressure protection mode is not activated, because the air conditioning fresh air valve is constantly open, the amount of waste air discharged is large. By controlling the oxygen generator to operate at a higher frequency, the oxygen demand inside the vehicle can be guaranteed.

[0179] According to embodiments of this disclosure, different control strategies can be adopted when the train is running in plateau areas above 3000m and in plain areas below 3000m. The control method for altitudes below 3000m will be described below.

[0180] Figure 5A flowchart illustrating a control method according to another embodiment of the present disclosure is shown schematically.

[0181] like Figure 5 As shown, the control method of this embodiment includes operations S501 to S504.

[0182] When operating S501, if the altitude of the train's current geographical location does not meet the preset altitude conditions, multiple pressure signals are received from the pressure measuring device.

[0183] When operating S502, determine whether to activate the pressure protection mode based on multiple pressure signals;

[0184] When operating S503, in the case of activating the pressure protection mode, a valve closing command is generated. The valve closing command is used to control the air conditioning fresh air valve and the pressure protection valve to maintain the normally closed state.

[0185] In operation S504, a third oxygen generation control command is sent to the oxygen generator to control the oxygen generator to stop generating oxygen.

[0186] Figure 6 A flowchart illustrating a control method according to another embodiment of this disclosure is shown schematically. Figure 6 As shown, the control method of this embodiment further includes operations S601 to S604.

[0187] In operation S601, if the altitude of the train's current geographical location does not meet the preset altitude conditions, multiple pressure signals are received from the pressure measuring device; this operation is the same as operation S501.

[0188] In operation S602, the pressure protection mode is activated based on multiple pressure signals; this operation is the same as operation S502.

[0189] When operating S603, without activating the pressure protection mode, a valve opening command is generated. This valve opening command is used to control the air conditioning fresh air valve and the pressure protection valve to remain in the normally open state.

[0190] In operation S604, a third oxygen generation control command is sent to the oxygen generator to control the oxygen generator to stop generating oxygen.

[0191] Combination Figure 3 As shown, the above embodiment is a control strategy for situations where the altitude of the train's current geographical location does not meet the preset altitude conditions, specifically, the altitude of the train's current geographical location is less than or equal to the preset altitude threshold, such as when the train is operating in a plain area with an altitude of less than 3000m.

[0192] in, Figure 5The illustrated embodiment is a control strategy for when the pressure protection mode is activated. Figure 6 The embodiment shown is a control strategy for the case of starting pressure protection mode.

[0193] Specifically, when the pressure protection mode is activated, valve closing commands are sent to both the air conditioning unit and the pressure protection device to keep the air conditioning fresh air valve and the pressure protection valve in a normally closed state. Simultaneously, a control command is sent to the oxygen generator to prevent it from producing oxygen.

[0194] Without activating the pressure protection mode, valve opening commands are sent to both the air conditioning unit and the pressure protection device to keep the air conditioning fresh air valve and pressure protection valve normally open. Simultaneously, a control command is sent to the oxygen generator to prevent it from producing oxygen.

[0195] According to embodiments of this disclosure, another feasible implementation method is as follows: when the pressure protection mode is activated, a pressure relief mode can be adopted, sending pressure relief control commands to the air conditioning unit and the pressure protection device respectively, so as to control the air conditioning fresh air valve and the pressure protection valve to be in an intermittently open state (or intermittently closed state) according to the target time interval. At the same time, a control command is sent to the oxygen generating device to control the oxygen generating device to stop generating oxygen.

[0196] According to embodiments of this disclosure, when operating in flat areas, the oxygen concentration inside the train meets comfort requirements by introducing fresh air from outside, thus eliminating the need to shut down the oxygen generator and saving energy. Simultaneously, the intake of fresh air is controlled differently depending on whether a pressure protection mode is activated. When the in-vehicle pressure protection device is activated, the fresh air valve is closed or intermittently closed, cutting off or reducing the airflow path between the inside and outside of the train, thereby achieving in-vehicle pressure protection. When the in-vehicle pressure protection device is not activated, the fresh air valve is opened to ensure sufficient fresh air intake to meet the air quality requirements inside the train.

[0197] According to the embodiments of this disclosure, as can be seen from the foregoing embodiments, it is possible to determine whether to activate the pressure protection mode based on the multiple sets of pressure signals collected. Specifically, it is possible to determine whether to activate the pressure protection device based on the pressure difference value between the inside and outside of the vehicle and the rate of change of the pressure difference between the inside and outside of the vehicle.

[0198] Another feasible implementation method is to determine whether to activate the pressure protection mode and whether to activate the pressure protection device by combining the conditions of the train entering and exiting the tunnel and multiple pressure signals.

[0199] Before the train enters the tunnel, the decision on whether to activate the pressure protection device is based on the distance between the train and the tunnel entrance, the pressure difference between the inside and outside of the train, and the rate of change of the pressure difference between the inside and outside of the train.

[0200] Specifically, it includes the following operations:

[0201] Operation 41: Before the train enters the tunnel, obtain the first distance value between the train and the tunnel entrance;

[0202] Operation 42: When the first distance value is less than or equal to a preset distance threshold, activate the pressure protection mode; for example, when the train is less than 200 meters from the tunnel entrance, activate pressure protection. This operation can be: when the first distance value is less than or equal to the preset distance threshold, first determine the current operating status of the pressure protection device; if pressure protection mode is already activated, maintain it; if pressure protection mode is not yet activated, activate it. Upon entering the tunnel, the pressure difference between the inside and outside of the train is large, requiring the activation of pressure protection.

[0203] Operation 43: Receive multiple sets of pressure signals corresponding to various time windows within a predetermined time period, sent by the pressure measuring device, and determine whether to maintain the pressure protection mode based on these multiple pressure signals. After entering the tunnel and the train's running status stabilizes, it is necessary to combine the real-time internal and external pressures to determine whether to continue maintaining pressure protection.

[0204] Before the train exits the tunnel, the decision on whether to activate the pressure protection device is made based on the distance between the train and the tunnel exit, the pressure difference between the inside and outside of the train, and the rate of change of the pressure difference between the inside and outside of the train.

[0205] Specifically, it includes the following operations:

[0206] Operation 51: First, determine the current operating status of the pressure protection device;

[0207] Operation 52: If the pressure protection mode is not currently activated, obtain the second distance value between the train and the tunnel exit.

[0208] Operation 53: When the second distance value is less than or equal to a preset distance threshold, the pressure protection mode is activated. For example, when the train is less than 200 meters from the tunnel entrance, the pressure protection mode is deactivated.

[0209] Operation 52: If the pressure protection mode is already activated, maintain the pressure protection device in the open state; no operation is required.

[0210] According to the embodiments of this disclosure, when entering or exiting a tunnel, it is necessary to activate the pressure protection device to ensure the comfort of the air pressure environment inside the vehicle. At the same time, considering the case of long tunnels, it is still necessary to combine the pressure inside and outside the vehicle to determine whether to keep the pressure protection device activated, so as to save equipment energy while ensuring the comfort of the air pressure environment inside the vehicle.

[0211] Based on the above control method, this disclosure also provides a control device. The following will be combined with... Figure 7 The device is described in detail.

[0212] Figure 7 A schematic block diagram of a control device according to an embodiment of the present disclosure is shown.

[0213] like Figure 7 As shown, the control device 700 in this embodiment includes a first receiving module 701, a first determining module 702, a first generating module 703, and a first sending module 704.

[0214] The first receiving module 701 is used to receive multiple sets of pressure signals corresponding to multiple time windows within a predetermined time period, when the altitude of the train's current geographical location meets the preset altitude conditions. Each set of pressure signals includes external pressure and internal pressure.

[0215] The first determining module 702 is used to determine the target pressure relief mode to be executed from M predetermined pressure relief modes based on multiple pressure signals when determining the start pressure protection mode based on multiple pressure signals.

[0216] The first generation module 703 is used to generate a target pressure relief control command based on the target pressure relief mode. The target pressure relief control command is used to control the air conditioning fresh air valve and the pressure protection valve to be in an intermittent opening state according to the target time interval.

[0217] The first sending module 704 is used to send a first oxygen generation control command to the oxygen generation device to control the oxygen generation device to deliver oxygen to the train compartment according to the first oxygen generation flow range.

[0218] According to embodiments of this disclosure, the above-described apparatus further includes a second generation module and a second transmission module.

[0219] The second generation module is used to generate a valve opening command when it is determined from multiple pressure signals that the pressure protection mode will not be activated. The valve opening command is used to control the air conditioning fresh air valve and the pressure protection valve to remain in a normally open state. The second sending module is used to send a second oxygen generation control command to the oxygen generation device to control the oxygen generation device to deliver oxygen to the train compartment according to a second oxygen generation flow range. The value of the second oxygen generation flow range is greater than the value of the first oxygen generation flow range.

[0220] According to embodiments of this disclosure, the first determining module includes a calculation unit, a first determining unit, and a second determining unit.

[0221] The calculation unit is used to calculate multiple sets of vehicle-inside-outside pressure difference values ​​corresponding to multiple time windows based on the vehicle-outside pressure and vehicle-inside pressure; the first determination unit is used to determine the target pressure difference value based on the multiple sets of vehicle-inside-outside pressure difference values, wherein the duration of the target pressure difference value within a predetermined time period is greater than a preset duration threshold; the second determination unit is used to determine the target pressure relief mode that matches the target pressure difference value from M predetermined pressure relief modes.

[0222] According to an embodiment of this disclosure, M predetermined pressure relief modes correspond to M differential pressure ranges, and the second determining unit includes a first determining subunit and a second determining subunit.

[0223] The first determining subunit is used to determine the target differential pressure range that matches the target differential pressure value from M differential pressure ranges; the second determining subunit is used to determine the predetermined pressure relief mode corresponding to the target differential pressure range as the target pressure relief mode.

[0224] According to embodiments of this disclosure, M predetermined pressure relief modes correspond to M differential pressure ranges. The predetermined pressure relief modes are used to continuously perform predetermined intermittent operations on the air conditioning fresh air valve and the pressure protection valve. The predetermined intermittent operations are as follows: after opening the air conditioning fresh air valve and the pressure protection valve for a first duration, closing the air conditioning fresh air valve and the pressure protection valve for a second duration; when the value of the Nth differential pressure range is greater than the value of the Lth differential pressure range, the value of the first duration associated with the Nth predetermined pressure relief mode is less than the first duration associated with the Lth predetermined pressure relief mode, and the value of the second duration associated with the Nth predetermined pressure relief mode is greater than the second duration associated with the Lth predetermined pressure relief mode, wherein N≠L, N≤M, and L≤M.

[0225] According to embodiments of this disclosure, the above-described apparatus further includes a first calculation module, a second calculation module, and a second determination module.

[0226] The first calculation module is used to calculate multiple sets of vehicle-inside-outside pressure difference values ​​corresponding to multiple time windows based on the vehicle-outside pressure and vehicle-inside pressure; the second calculation module is used to calculate the vehicle-inside-outside pressure difference change rate within a predetermined time period based on the multiple sets of vehicle-inside-outside pressure difference values; and the second determination module is used to determine whether to activate the pressure protection device based on the vehicle-inside-outside pressure difference value and the vehicle-inside-outside pressure difference change rate.

[0227] According to embodiments of this disclosure, the second determining module includes a third determining unit and a fourth determining unit.

[0228] The third determining unit is used to determine to activate the pressure protection device when the pressure difference between the inside and outside of the vehicle is greater than a first preset pressure difference threshold and the rate of change of the pressure difference between the inside and outside of the vehicle is greater than a first preset rate of change threshold; the fourth determining unit is used to determine not to activate the pressure protection device when the pressure difference between the inside and outside of the vehicle is less than or equal to a second preset pressure difference threshold and the rate of change of the pressure difference between the inside and outside of the vehicle is less than or equal to a second preset rate of change threshold, wherein the first preset pressure difference threshold is greater than or equal to the second preset pressure difference threshold and the first preset rate of change threshold is greater than or equal to the second preset rate of change threshold.

[0229] According to embodiments of this disclosure, the first transmitting module includes a receiving unit, a fifth determining unit, and a transmitting unit.

[0230] The receiving unit is used to receive the in-vehicle carbon dioxide concentration signal sent by the air detection device; the fifth determining unit is used to determine the target operating frequency to be executed by the oxygen generating device based on the first oxygen production flow range and the in-vehicle carbon dioxide concentration signal; and the sending unit is used to send the first oxygen production control command to the oxygen generating device based on the target operating frequency.

[0231] According to embodiments of this disclosure, the above-described apparatus further includes a second receiving module, a third determining module, a third generating module, and a third sending module.

[0232] The second receiving module is used to receive multiple pressure signals sent by the pressure measuring device when the altitude of the train's current geographical location does not meet the preset altitude conditions; the third determining module is used to determine whether to activate the pressure protection mode based on the multiple pressure signals; the third generating module is used to generate a valve closing command when the pressure protection mode is activated, wherein the valve closing command is used to control the air conditioning fresh air valve and the pressure protection valve to maintain the normally closed state; the third sending module is used to send a third oxygen generation control command to the oxygen generation device to control the oxygen generation device not to generate oxygen.

[0233] According to embodiments of this disclosure, the above-described apparatus further includes a fourth generation module and a fourth transmission module.

[0234] The fourth generation module is used to generate valve opening commands without activating the pressure protection mode. The valve opening commands are used to control the air conditioning fresh air valve and the pressure protection valve to remain in a normally open state. The fourth sending module is used to send a third oxygen generation control command to the oxygen generator to control the oxygen generator to stop generating oxygen.

[0235] According to embodiments of this disclosure, the above-described apparatus further includes a first acquisition module, a startup module, and a fourth determination module.

[0236] The first acquisition module is used to acquire a first distance value between the train and the tunnel entrance before the train enters the tunnel; the activation module is used to activate the pressure protection mode when the first distance value is less than or equal to a preset distance threshold; and the fourth determination module is used to determine whether to maintain the pressure protection mode based on multiple sets of pressure signals.

[0237] According to embodiments of this disclosure, the above-described apparatus further includes a second acquisition module and a fifth determination module.

[0238] The second acquisition module is used to acquire a second distance value between the train and the tunnel exit when the pressure protection mode is not activated in the tunnel; the fifth determination module is used to determine to activate the pressure protection mode when the second distance value is less than or equal to a preset distance threshold.

[0239] According to embodiments of this disclosure, any plurality of modules among the first receiving module 701, the first determining module 702, the first generating module 703, and the first transmitting module 704 can be combined into one module, or any one of these modules can be split into multiple modules. Alternatively, at least part of the functionality of one or more of these modules can be combined with at least part of the functionality of other modules and implemented in one module. According to embodiments of this disclosure, at least one of the first receiving module 701, the first determining module 702, the first generating module 703, and the first transmitting module 704 can be at least partially implemented as hardware circuitry, such as a field-programmable gate array (FPGA), a programmable logic array (PLA), a system-on-a-chip, a system-on-a-substrate, a system-on-package, an application-specific integrated circuit (ASIC), or implemented in hardware or firmware by any other reasonable means of integrating or packaging the circuitry, or implemented in any one of the three implementation methods of software, hardware, and firmware, or in a suitable combination of any of these. Alternatively, at least one of the first receiving module 701, the first determining module 702, the first generating module 703, and the first sending module 704 can be implemented at least partially as a computer program module, which can perform corresponding functions when the computer program module is run.

[0240] Figure 8 A block diagram schematically illustrates an electronic device suitable for implementing a control method according to an embodiment of the present disclosure.

[0241] like Figure 8As shown, an electronic device 800 according to an embodiment of this disclosure includes a processor 801, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 802 or a program loaded from a storage portion 808 into a random access memory (RAM) 803. The processor 801 may include, for example, a general-purpose microprocessor (e.g., a CPU), an instruction set processor and / or an associated chipset and / or a special-purpose microprocessor (e.g., an application-specific integrated circuit (ASIC)), etc. The processor 801 may also include onboard memory for caching purposes. The processor 801 may include a single processing unit or multiple processing units for performing different actions of the method flow according to an embodiment of this disclosure.

[0242] RAM 803 stores various programs and data required for the operation of electronic device 800. Processor 801, ROM 802, and RAM 803 are interconnected via bus 804. Processor 801 performs various operations of the method flow according to embodiments of the present disclosure by executing programs in ROM 802 and / or RAM 803. It should be noted that the programs may also be stored in one or more memories other than ROM 802 and RAM 803. Processor 801 may also perform various operations of the method flow according to embodiments of the present disclosure by executing programs stored in said one or more memories.

[0243] According to embodiments of this disclosure, the electronic device 800 may further include an input / output (I / O) interface 805, which is also connected to a bus 804. The electronic device 800 may also include one or more of the following components connected to the input / output (I / O) interface 805: an input section 806 including a keyboard, mouse, etc.; an output section 807 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 808 including a hard disk, etc.; and a communication section 809 including a network interface card such as a LAN card, modem, etc. The communication section 809 performs communication processing via a network such as the Internet. A drive 810 is also connected to the input / output (I / O) interface 805 as needed. A removable medium 811, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., is installed on the drive 810 as needed so that computer programs read from it can be installed into the storage section 808 as needed.

[0244] This disclosure also provides a computer-readable storage medium, which may be included in the device / apparatus / system described in the above embodiments; or it may exist independently and not assembled into the device / apparatus / system. The computer-readable storage medium carries one or more programs that, when executed, implement the method according to the embodiments of this disclosure.

[0245] According to embodiments of this disclosure, the computer-readable storage medium may be a non-volatile computer-readable storage medium, such as including, but not limited to: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this disclosure, the computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. For example, according to embodiments of this disclosure, the computer-readable storage medium may include ROM 802 and / or RAM 803 and / or one or more memories other than ROM 802 and RAM 803 described above.

[0246] Embodiments of this disclosure also include a computer program product comprising a computer program containing program code for performing the methods shown in the flowchart. When the computer program product is run on a computer system, the program code is used to cause the computer system to implement the control methods provided in the embodiments of this disclosure.

[0247] When the computer program is executed by the processor 801, it performs the functions defined in the system / apparatus of this disclosure embodiments. According to embodiments of this disclosure, the systems, apparatuses, modules, units, etc., described above can be implemented by computer program modules.

[0248] In one embodiment, the computer program may rely on a tangible storage medium such as an optical storage device or a magnetic storage device. In another embodiment, the computer program may also be transmitted and distributed in the form of signals over a network medium, and may be downloaded and installed via the communication section 809, and / or installed from a removable medium 811. The program code contained in the computer program can be transmitted using any suitable network medium, including but not limited to: wireless, wired, etc., or any suitable combination thereof.

[0249] In such an embodiment, the computer program can be downloaded and installed from a network via communication section 809, and / or installed from removable medium 811. When the computer program is executed by processor 801, it performs the functions defined in the system of this disclosure embodiment. According to embodiments of this disclosure, the systems, devices, apparatuses, modules, units, etc., described above can be implemented by computer program modules.

[0250] According to embodiments of this disclosure, program code for executing the computer programs provided in embodiments of this disclosure can be written in any combination of one or more programming languages. Specifically, these computational programs can be implemented using high-level procedural and / or object-oriented programming languages, and / or assembly / machine languages. Programming languages ​​include, but are not limited to, languages ​​such as Java, C++, Python, "C", or similar programming languages. The program code can execute entirely on the user's computing device, partially on the user's device, partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0251] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0252] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this disclosure can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this disclosure. In particular, the features described in the various embodiments and / or claims of this disclosure can be combined or combined in various ways without departing from the spirit and teachings of this disclosure. All such combinations and / or combinations fall within the scope of this disclosure.

[0253] The embodiments of this disclosure have been described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of this disclosure. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. The scope of this disclosure is defined by the appended claims and their equivalents. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of this disclosure, and all such substitutions and modifications should fall within the scope of this disclosure.

Claims

1. A control method, comprising: When the altitude of the train's current geographical location meets the preset altitude conditions, the train receives multiple sets of pressure signals corresponding to multiple time windows within a predetermined time period, sent by the pressure measuring device. Each set of pressure signals includes external pressure and internal pressure. When determining the activation pressure protection mode based on the multiple sets of pressure signals, the target pressure relief mode to be executed is determined from M predetermined pressure relief modes based on the multiple sets of pressure signals. Based on the target pressure relief mode, a target pressure relief control command is generated, wherein the target pressure relief control command is used to control the air conditioning fresh air valve and the pressure protection valve to be in an intermittently open state according to the target time interval; Send a first oxygen generation control command to the oxygen generation device to control the oxygen generation device to deliver oxygen to the train compartment according to the first oxygen generation flow range; The M predetermined pressure relief modes correspond to the M differential pressure ranges. The predetermined pressure relief modes are used to continuously perform predetermined intermittent operations on the air conditioning fresh air valve and the pressure protection valve. The predetermined intermittent operation is as follows: after opening the air conditioning fresh air valve and the pressure protection valve for a first duration, the air conditioning fresh air valve and the pressure protection valve are closed for a second duration. When the value of the Nth differential pressure range is greater than the value of the Lth differential pressure range, the value of the first duration associated with the Nth predetermined pressure relief mode is less than the first duration associated with the Lth predetermined pressure relief mode, and the value of the second duration associated with the Nth predetermined pressure relief mode is greater than the second duration associated with the Lth predetermined pressure relief mode, where N≠L, N≤M, and L≤M.

2. The method according to claim 1, further comprising: If it is determined that the pressure protection mode will not be activated based on the multiple pressure signals, a valve opening command is generated, wherein the valve opening command is used to control the air conditioning fresh air valve and the pressure protection valve to remain in a normally open state. A second oxygen generation control command is sent to the oxygen generation device to control the oxygen generation device to deliver oxygen to the train compartment according to a second oxygen generation flow range, wherein the value of the second oxygen generation flow range is greater than the value of the first oxygen generation flow range.

3. The method according to claim 1, wherein, The target pressure relief mode to be executed is determined from M predetermined pressure relief modes based on the multiple sets of pressure signals, including: Based on the external pressure and the internal pressure, multiple sets of pressure difference values ​​between the vehicle and the outside are calculated, corresponding to the multiple time windows. A target pressure difference value is determined based on the multiple sets of vehicle interior and exterior pressure difference values, wherein the duration of the target pressure difference value within the predetermined time period is greater than a preset duration threshold. From M predetermined pressure relief modes, determine the target pressure difference value that matches the target pressure relief mode.

4. The method according to claim 3, wherein, The M predetermined pressure relief modes correspond to M differential pressure ranges. Determining the target pressure relief mode that matches the target differential pressure value from the M predetermined pressure relief modes includes: Determine a target differential pressure range that matches the target differential pressure value from the M differential pressure ranges; The predetermined pressure relief mode corresponding to the target differential pressure range is determined as the target pressure relief mode.

5. The method according to claim 1, further comprising: Based on the external pressure and the internal pressure, multiple sets of pressure difference values ​​between the vehicle and the outside are calculated, corresponding to the multiple time windows. The rate of change of the vehicle-inside-outside pressure difference within the predetermined time period is calculated based on the multiple sets of vehicle-inside-outside pressure difference values. Whether to activate the pressure protection device is determined based on the pressure difference value between the inside and outside of the vehicle and the rate of change of the pressure difference between the inside and outside of the vehicle. Determining whether to activate the pressure protection device based on the pressure difference value between the inside and outside of the vehicle and the rate of change of the pressure difference between the inside and outside of the vehicle includes: If the pressure difference between the inside and outside of the vehicle is greater than a first preset pressure difference threshold, and the rate of change of the pressure difference between the inside and outside of the vehicle is greater than a first preset rate of change threshold, the pressure protection device is activated. If the pressure difference between the inside and outside of the vehicle is less than or equal to the second preset pressure difference threshold, and the rate of change of the pressure difference between the inside and outside of the vehicle is less than or equal to the second preset rate of change threshold, it is determined that the pressure protection device will not be activated, wherein the first preset pressure difference threshold is greater than or equal to the second preset pressure difference threshold, and the first preset rate of change threshold is greater than or equal to the second preset rate of change threshold.

6. The method according to claim 1, wherein sending a first oxygen generation control command to the oxygen generating device comprises: Receives the carbon dioxide concentration signal inside the vehicle sent by the air detection device; The target operating frequency to be executed by the oxygen generator is determined based on the first oxygen flow range and the in-vehicle carbon dioxide concentration signal. The first oxygen generation control command is sent to the oxygen generating device based on the target operating frequency.

7. The method according to claim 1, further comprising: If the altitude of the train's current geographical location does not meet the preset altitude conditions, the train receives the multiple sets of pressure signals sent by the pressure measuring device. Determine whether to activate the pressure protection mode based on the multiple sets of pressure signals; When the pressure protection mode is activated, a valve closing command is generated, wherein the valve closing command is used to control the air conditioning fresh air valve and the pressure protection valve to remain in a normally closed state; and a third oxygen generation control command is sent to the oxygen generation device to control the oxygen generation device to not generate oxygen; Without activating the pressure protection mode, a valve opening command is generated, wherein the valve opening command is used to control the air conditioning fresh air valve and the pressure protection valve to remain in a normally open state; and a third oxygen generation control command is sent to the oxygen generation device to control the oxygen generation device to not generate oxygen.

8. The method according to claim 1, further comprising: Before the train enters the tunnel, the first distance value between the train and the tunnel entrance is obtained; If the first distance value is less than or equal to a preset distance threshold, the pressure protection mode is activated; Determine whether to maintain the pressure protection mode based on the multiple sets of pressure signals; When the pressure protection mode is not activated while the train is inside the tunnel, obtain the second distance value between the train and the tunnel exit. If the second distance value is less than or equal to a preset distance threshold, the pressure protection mode is activated.

9. A control device, comprising: The first receiving module is used to receive multiple sets of pressure signals sent by the pressure measuring device within a predetermined time period, provided that the altitude of the train's current geographical location meets the preset altitude conditions. Each set of pressure signals includes external pressure and internal pressure. The first determining module is used to determine the target pressure relief mode to be executed from M predetermined pressure relief modes based on the multiple pressure signals when the activation pressure protection mode is determined based on the multiple pressure signals. The first generation module is used to generate a target pressure relief control command based on the target pressure relief mode, wherein the target pressure relief control command is used to control the air conditioning fresh air valve and the pressure protection valve to be in an intermittent opening state according to the target time interval; The first sending module is used to send a first oxygen generation control command to the oxygen generation device to control the oxygen generation device to deliver oxygen to the train compartment according to the first oxygen generation flow range. The M predetermined pressure relief modes correspond to the M differential pressure ranges. The predetermined pressure relief modes are used to continuously perform predetermined intermittent operations on the air conditioning fresh air valve and the pressure protection valve. The predetermined intermittent operation is as follows: after opening the air conditioning fresh air valve and the pressure protection valve for a first duration, the air conditioning fresh air valve and the pressure protection valve are closed for a second duration. When the value of the Nth differential pressure range is greater than the value of the Lth differential pressure range, the value of the first duration associated with the Nth predetermined pressure relief mode is less than the first duration associated with the Lth predetermined pressure relief mode, and the value of the second duration associated with the Nth predetermined pressure relief mode is greater than the second duration associated with the Lth predetermined pressure relief mode, where N≠L, N≤M, and L≤M.

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