Subway tunnel piston air valve control method and device, electronic equipment and storage medium

Abstract

The invention discloses a subway tunnel piston air valve control method and device, electronic equipment and a storage medium, and the method comprises the steps: monitoring indoor and outdoor air indexes of each section of a subway tunnel, judging whether a triggering condition is satisfied or not according to at least one of the temperature and humidity in the indoor and outdoor air indexes, and determining a target control mode, so as to control the opening degree of a piston air valve, when the outdoor temperature is higher than the tunnel temperature or the outdoor humidity is too high, the opening degree of the piston air valve is reduced or even the piston air valve is closed, so that the tunnel is kept at low temperature and humidity, a low-temperature environment is provided for air conditioners of running trains in the tunnel and air conditioners in stations, and energy consumption of the air conditioners is reduced; when the outdoor temperature is lower than the tunnel temperature, the opening degree of the piston air valve is controlled to be increased; tunnel cold storage or heat storage and air conditioner energy conservation are achieved through asymmetric piston air ventilation, and the tunnel can learn to breathe; in addition, influence on electronic equipment, line safety and driver sight caused by condensation or fog due to too high humidity is avoided, safety risks and hidden dangers are reduced, and safe operation is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of subway ventilation, and in particular to a method, device, electronic equipment and storage medium for controlling a piston air valve in a subway tunnel. Background Art

[0002] The subway is buried deep underground. In order to ensure the air quality in the subway tunnel, a piston air shaft connecting the ground and the tunnel is usually set up near the subway station. The piston air shaft constitutes one of the subway's fresh air systems.

[0003] At present, in order to ensure the air quality in the tunnel, the piston air valve on the piston air shaft is kept in the open state all year round. Under the piston effect of the subway train entering and leaving the station, the stale air in the tunnel is discharged and fresh air is injected through the piston air shaft.

[0004] After research, the inventor found that since the original intention of the piston air shaft design was to serve as one of the fresh air systems and to discharge the heat of the train, it did not take into account the impact of air indicators such as the temperature of the introduced outdoor fresh air (the outdoor heat is much greater than the heat generated by the subway train) and humidity on the energy consumption and safety of the subway, resulting in high energy consumption in the operation of the subway system and hidden safety risks. Summary of the invention

[0005] The present invention provides a control method, device, electronic equipment and storage medium for a piston air valve in a subway tunnel, so as to solve the problem that the piston air valve is fully open all year round and introduces external heat, resulting in high energy consumption in the operation of the subway system and potential safety risks.

[0006] In a first aspect, the present invention provides a method for controlling a piston air valve in a subway tunnel, which is used to control the piston air valves in each tunnel section in a subway tunnel, comprising:

[0007] Monitoring the tunnel air index and outdoor air index of each tunnel section in the subway tunnel, wherein the tunnel air index and the outdoor air index at least include temperature and humidity;

[0008] Determining whether a preset trigger condition is met according to at least one of the temperature and humidity in the tunnel air index and the outdoor air index;

[0009] If so, determining a target control mode pre-associated with the satisfied trigger condition;

[0010] The opening of the piston air valve of the tunnel section is controlled according to the target control mode.

[0011] In a second aspect, the present invention provides a subway tunnel piston air valve control device for controlling the piston air valves of each tunnel section in a subway tunnel, comprising:

[0012] An air index monitoring module is used to monitor the air index inside the tunnel and the outdoor air index of each tunnel section in the subway tunnel, wherein the air index inside the tunnel and the outdoor air index at least include temperature and humidity;

[0013] A trigger condition determination module, used to determine whether a preset trigger condition is met according to at least one of the temperature and humidity in the tunnel air index and the outdoor air index, and if so, execute a target control mode determination module;

[0014] A target control mode determination module, used to determine a target control mode pre-associated with the satisfied trigger condition;

[0015] The piston air valve control module is used to control the opening of the piston air valve in the tunnel section according to the target control mode.

[0016] In a third aspect, the present invention provides an electronic device, the electronic device comprising:

[0017] at least one processor; and

[0018] a memory communicatively connected to the at least one processor; wherein,

[0019] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the subway tunnel piston air valve control method described in the first aspect of the present invention.

[0020] In a fourth aspect, the present invention provides a computer-readable storage medium storing computer instructions, wherein the computer instructions are used to enable a processor to implement the subway tunnel piston air valve control method described in the first aspect of the present invention when executed.

[0021] In a fifth aspect, the present invention provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, it implements the subway tunnel piston air valve control method described in the first aspect of the present invention.

[0022] The embodiment of the present invention monitors the tunnel air index and outdoor air index of each tunnel section in the subway tunnel, and determines whether the preset trigger condition is met according to at least one of the temperature and humidity in the tunnel air index and the outdoor air index. If so, the target control mode pre-associated with the satisfied trigger condition is determined, and the opening of the piston air valve of the tunnel section is controlled according to the target control mode, so that various control modes and trigger conditions can be configured according to the outdoor and tunnel temperature and humidity, so as to reduce the opening of the piston air valve or even close the piston air valve when the outdoor temperature is greater than the tunnel temperature or the outdoor humidity is too high, thereby preventing outdoor heat or moisture from entering the tunnel, so that the tunnel can maintain a low temperature and humidity. On the one hand, the tunnel temperature is maintained at a low temperature, which can provide a low temperature environment for the air conditioners on the trains running in the tunnel and the air conditioners in the station, reducing the energy consumption of the train air conditioners and the station air conditioners. On the other hand, it can prevent condensation or fogging caused by excessive humidity in the tunnel from affecting the electronic equipment and line operation in the tunnel or the driver's vision, thereby reducing the safety risk hidden dangers of subway operation and improving the safety performance of subway operation.

[0023] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a schematic diagram of the subway tunnel ventilation system;

[0026] Figure 2 This is a flow chart of a subway tunnel piston air valve control method provided by the first embodiment of the present invention;

[0027] Figure 3 This is a flow chart of a method for controlling a piston air valve in a subway tunnel provided by Embodiment 2 of the present invention;

[0028] Figure 4 It is a schematic diagram of the passenger flow curve;

[0029] Figure 5 It is a schematic diagram of the temperature curve;

[0030] Figure 6 is a schematic diagram of carbon dioxide concentration;

[0031] Figure 7 This is a schematic diagram without the station ventilation system;

[0032] Figure 8 It is a structural schematic diagram of a subway tunnel piston air valve control device provided by the third embodiment of the present invention;

[0033] Fig. 9 It is a schematic diagram of the structure of an electronic device provided in Embodiment 4 of the present invention. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0035] like Figure 1 The figure shows a schematic diagram of the ventilation system of an existing subway tunnel. Figure 1 The subway tunnel ventilation system includes a station ventilation and air-conditioning system and a piston air system. The station ventilation and air-conditioning system includes air conditioners and platform air valves installed in the station and ventilation ducts connected to the air shaft. The piston air system mainly includes ventilation ducts connecting the air shaft and the tunnel and piston air valves installed on the ventilation ducts.

[0036] Among them, the station ventilation and air-conditioning system is mainly used for the ambient temperature and fresh air control in the station, and the piston air system is mainly used to inject outdoor fresh air into the tunnel. In a tunnel section, it includes two piston air valves located at both ends of the tunnel section (which can be a single piston, a single-end piston, or a shared piston, the specific form is not limited), that is, a double piston air valve. In addition, in the case of double tunnels (an up tunnel and a down tunnel), the subway tunnel ventilation system can also include a connecting air valve between the up tunnel and the down tunnel, and a platform door air valve connecting the tunnel and the station platform set on the shield door on the station platform or other locations.

[0037] In the prior art, in order to ensure fresh air in the tunnel, the piston air valve is always in an open state. When the train enters the station, the train compresses the air in front of the train head, so that the stale air in the tunnel in front of the train is discharged from the air shaft to the outside through the piston air valve. Due to the negative pressure at the rear of the train, the outdoor air enters the tunnel from the air shaft through the piston air valve at the rear of the train to form fresh air. When the outdoor temperature is higher than the tunnel temperature (such as in summer), the outdoor high-temperature air enters the tunnel through the piston air valve, causing the ambient temperature in the tunnel to rise. The air conditioner on the train passing through the tunnel will work in the high-temperature tunnel, and the air in the tunnel will also enter the station (such as entering the platform), causing the temperature of the platform to rise, resulting in an increase in the heat load of the station ventilation and air conditioning system, resulting in an increase in the air conditioning energy consumption of the train and the station; in addition, if the outdoor humidity is too high, the outdoor moisture will be introduced into the tunnel through the piston air valve, resulting in excessive humidity in the tunnel condensing on the tunnel wall, thereby affecting the electronic equipment and lines in the subway tunnel, posing a safety risk. In order to improve the problems existing in the existing piston air valve control, the present invention provides a subway tunnel piston air valve control method of the following embodiment, which controls the ventilation volume between the tunnel and the outdoors by controlling the opening of the piston air valve on the basis of existing facilities, so that when the outdoor temperature is higher than the tunnel temperature (such as in summer), the opening of the piston air valve is reduced to control the tunnel and the outdoors to have less ventilation; when the outdoor temperature is lower than the tunnel temperature (such as in summer), the opening of the piston air valve is increased to control the tunnel and the outdoors to have more ventilation, thereby realizing asymmetric ventilation, reducing the tunnel temperature, reducing the energy consumption of trains and stations, and eliminating the safety risks caused by the introduction of outdoor moisture.

[0038] Embodiment 1

[0039] Figure 2 This is a flowchart of a subway tunnel piston air valve control method provided by the first embodiment of the present invention. This embodiment is applicable to the situation of subway tunnel piston air valve control. The method can be executed by a subway tunnel piston air valve control device. The subway tunnel piston air valve control device can be implemented in the form of hardware and / or software and can be configured in an electronic device. Figure 2 As shown, the subway tunnel piston air valve control method includes:

[0040] S201. Monitor the air indexes inside the tunnel and outside the tunnel in each tunnel section of the subway tunnel, where the air indexes inside the tunnel and outside the tunnel at least include temperature and humidity.

[0041] In this embodiment, the tunnel section may be a tunnel between two stations in a subway tunnel, and the air indicators in the tunnel may be various parameters of the air in the tunnel. By way of example, the air indicators in the tunnel may include parameters such as tunnel fire detection, tunnel air pressure, tunnel air temperature, tunnel air humidity, tunnel air carbon dioxide concentration, and PM2.5 or PM10 in the tunnel. The outdoor air indicators may be various parameters of the air in the area where the tunnel section is located. By way of example, the outdoor air indicators may include parameters such as outdoor air pressure (for example, meteorological data may be defaulted), temperature, humidity, carbon dioxide concentration (for example, meteorological data may be defaulted), and PM2.5 or PM10 in the outdoor air.

[0042] In this embodiment, sensors can be set in the tunnel section to monitor the air indexes in each upstream and downstream tunnel sections, and sensors can be used outdoors in the tunnel section to monitor the outdoor air indexes. Of course, outdoor air indexes can also be obtained through local meteorological information departments.

[0043] S202: Determine whether a preset trigger condition is met based on at least one of the temperature and humidity in the tunnel air index and the outdoor air index.

[0044] The triggering condition of this embodiment may be a condition for triggering the control piston air valve, so as to reduce the outdoor heat entering the tunnel by controlling the piston air valve when the outdoor temperature is greater than the tunnel temperature, or reduce the external moisture entering the tunnel, or reduce the external PM2.5 or PM10 particles entering the tunnel. The triggering condition includes at least one of temperature and humidity as a criterion, and of course may also include PM2.5, PM10 particles, etc. In one example, in order to avoid introducing outdoor heat into the tunnel, the triggering condition may be that the outdoor temperature is higher than the tunnel temperature. In another example, in order to avoid introducing too much moisture into the tunnel due to high outdoor humidity and causing condensation, the triggering condition may be that the outdoor temperature is higher than the indoor temperature, and the tunnel temperature is lower than the condensation temperature of the outdoor humidity. Of course, those skilled in the art may set different triggering conditions according to the hardware facilities of the station and the tunnel (such as whether there are platform doors, whether there are ventilation valves on the platform doors, etc.), and in combination with temperature and safe operation control requirements. The embodiment of the present invention does not limit the triggering conditions.

[0045] After monitoring the air index in the tunnel and the outdoor air index, it can be determined whether the preset trigger condition is met through at least one of the temperature and humidity in the tunnel air index and the outdoor air index. If so, execute S203; if not, maintain the current state of the piston air valve without adjusting the piston air valve, and return to S201 to continue monitoring the tunnel air index and the outdoor air index of each tunnel section in the subway tunnel.

[0046] S203: Determine a target control mode pre-associated with the satisfied trigger condition.

[0047] This embodiment can pre-configure the control mode of the piston air valve under different triggering conditions. The control mode can be a method for controlling the piston air valve. For example, the control mode can control whether the piston air valve is opened, the opening method and the target opening degree. The control mode can also include control modes of other air valves, such as the control method of the connecting air valve between the up tunnel and the down tunnel, the control method of the ventilation (pressure relief) valve on the platform door, etc.

[0048] In another embodiment, the control mode may further include a method for calculating the opening of the piston air valve. This embodiment may pre-configure the method for calculating the opening of the piston air valve under different trigger conditions. In one example, the control mode of the piston air valve opening may be pre-configured according to the outdoor temperature and the tunnel temperature. In another example, the control mode of the piston air valve opening may be pre-configured according to the outdoor temperature, outdoor humidity, and tunnel temperature. This embodiment does not limit the control modes associated with different trigger conditions.

[0049] S204. Control the opening of the piston air valve in the tunnel section according to the target control mode.

[0050] The opening of the piston air valve can be the duration of the piston air valve being open at the maximum air volume, or the air volume per unit time when the piston air valve is open. In one embodiment, the target control mode can include the target duration of the piston air valve being open at the maximum air volume, and the piston air valve can be controlled to be opened at the maximum air volume and timed, and the piston air valve can be closed when the timed duration is equal to the target duration. In another embodiment, the target control mode can include the target air volume per unit time of the piston air valve, and the piston air valve can be controlled to be opened at the target air volume per unit time and last for a preset duration.

[0051] The embodiment of the present invention determines whether a preset trigger condition is met based on at least one of the temperature and humidity in the air index in the tunnel and the outdoor air index. If so, the target control mode pre-associated with the satisfied trigger condition is determined, and the opening of the piston air valve in the tunnel section is controlled according to the target control mode, so that various control modes and trigger conditions can be configured according to the outdoor and tunnel temperature and humidity, so as to reduce the opening of the piston air valve or even close the piston air valve when the outdoor temperature is higher than the tunnel temperature or the outdoor humidity is too high, thereby preventing outdoor heat or moisture from entering the tunnel, so that the tunnel can maintain a low temperature and humidity. On the one hand, the tunnel temperature is maintained at a low temperature, which can provide a low temperature environment for the ventilation and air-conditioning systems on the trains running in the tunnel and the ventilation and air-conditioning systems in the station, thereby reducing the energy consumption of the train ventilation and air-conditioning systems and the station ventilation and air-conditioning systems. On the other hand, it can avoid condensation caused by excessive humidity in the tunnel, which affects the operation of electronic equipment and lines in the tunnel, or forms fog that affects the driver's vision, thereby reducing the hidden safety risks of the subway and improving the safety performance of the subway operation.

[0052] Embodiment 2

[0053] Figure 3 This is a flow chart of a subway tunnel piston air valve control method provided by the second embodiment of the present invention. The embodiment of the present invention is optimized on the basis of the above-mentioned first embodiment. Figure 3 As shown, the subway tunnel piston air valve control method includes:

[0054] S301. Monitor the air indexes inside the tunnel and outside the tunnel in each tunnel section of the subway tunnel. The air indexes inside the tunnel and outside the tunnel at least include temperature and humidity.

[0055] In this embodiment, sensors can be set in the tunnel section to monitor the air indicators in the tunnel of each tunnel section, and outdoor air indicators can be monitored by sensors outside the tunnel section, wherein the air indicators in the tunnel may include parameters such as tunnel air pressure, tunnel temperature, tunnel humidity, carbon dioxide concentration of tunnel air, PM2.5 or PM10 of tunnel air, and outdoor air indicators may include parameters such as outdoor air pressure, temperature, humidity, carbon dioxide concentration, PM2.5 or PM10 of outdoor air.

[0056] S302: Determine whether the outdoor temperature is higher than the tunnel temperature.

[0057] Specifically, the collected outdoor temperature can be compared with the tunnel temperature. If the outdoor temperature is higher than the tunnel temperature, in order to avoid introducing outdoor heat, the piston air valve needs to be controlled and S303-S307 can be executed. If the outdoor temperature is lower than the tunnel temperature, S308-S312 can be executed.

[0058] In an optional embodiment, if the outdoor temperature is higher than the tunnel temperature, it can be further determined whether the outdoor temperature is higher than a preset temperature threshold. If so, it is determined that the preset trigger condition is met, and the preset fifth control mode is determined as the target control mode. If not, it means that the outdoor temperature is not extremely high temperature weather, and it is determined that the preset trigger condition is not met. The preset temperature threshold can be a threshold for extremely high temperature weather. For example, in summer, the outdoor temperature is much higher than the temperature in the tunnel. A temperature threshold can be set. For example, the temperature threshold can be any temperature value above 37°C. It can be specifically determined based on the summer temperature in the area where the tunnel section is located, so that when the outdoor temperature is higher than the temperature threshold, the piston air valve is closed or the piston air valve is opened with a smaller opening, thereby increasing the air circulation inside the tunnel and reducing the entry of high-temperature outdoor air into the tunnel. In one example, the fifth control mode can be that the double piston air valve is closed and the connecting air valve between the up tunnel and the down tunnel is fully opened, and the ventilation valve on the platform door is opened, that is, the double piston air valve is completely closed to prevent the tunnel from being connected to the outside, and to prevent the outdoor air from entering the tunnel through the piston air valve, and by opening the connecting air valve between the up tunnel and the down tunnel or the ventilation valve on the platform door, the air pressure in the tunnel can be balanced, and the air circulation inside the tunnel can be increased to avoid the excessive air pressure in the tunnel after the piston air valve is closed. Damage to equipment such as the platform door; in addition, the station can be supplemented with low-temperature fresh air. In another example, the fifth control mode can be to open the piston air valve with a small opening, thereby reducing the ventilation volume of outdoor high-temperature air entering the tunnel, wherein the opening of the piston air valve can be determined according to the outdoor temperature. For example, the opening of the piston air valve is negatively correlated with the outdoor temperature. The higher the outdoor temperature, the smaller the opening of the piston air valve, thereby reducing the ventilation volume of the piston air valve when the outdoor temperature is higher than the temperature threshold.

[0059] In another embodiment, if the outdoor temperature is higher than the tunnel temperature, and the outdoor temperature is lower than a preset temperature threshold (for example, less than any temperature value above 37°C), the difference between the outdoor temperature and the tunnel temperature can be calculated as the temperature difference, and it is determined whether the temperature difference is greater than the preset temperature difference threshold. If so, S303-S307 are executed. If not, a control mode can be selected from the preset first control mode, second control mode, third control mode and fourth control mode according to at least one of the air pressure, carbon dioxide concentration, outdoor air enthalpy value and tunnel air enthalpy value in the air indicators in the tunnel as the target control mode.

[0060] Specifically, the temperature difference threshold can be determined based on the outdoor temperature of the area where the tunnel section is located, the average temperature of the tunnel, and each season. For example, in spring and autumn, if the temperature difference between the outdoor temperature and the tunnel temperature in an area is small, in order to avoid frequent opening control of the piston air valve, a temperature difference threshold (for example, 1°C, 2°C, etc.) can be set. When the temperature difference between the outdoor temperature and the tunnel temperature is greater than the temperature difference threshold, it means that the outdoor temperature is greater than the tunnel temperature, and the temperature difference between the two is large. In order to avoid high-temperature outdoor air from entering the tunnel, the opening of the piston air valve needs to be controlled, and S303-S307 can be executed.

[0061] If the temperature difference between the two is small, a control mode can be further selected from the preset first control mode, second control mode, third control mode and fourth control mode according to at least one of the air pressure, carbon dioxide concentration, outdoor air enthalpy and tunnel air enthalpy in the air index in the tunnel as the target control mode, wherein the external ventilation volume of the piston air valve in the first control mode, the second control mode, the third control mode and the fourth control mode is reduced in sequence. Exemplarily, the priority of the air pressure in the tunnel is higher than the carbon dioxide concentration. When the temperature difference is small, the influence of the heat introduced from the outdoor can be ignored. The air pressure in the tunnel is considered first. If the air pressure in the tunnel is greater than the pressure threshold, pressure relief is required. The target control mode can be determined from the first control mode, the second control mode, the third control mode and the fourth control mode to control the piston air valve to open for pressure relief. If the air pressure is less than the pressure threshold, it is further determined whether the carbon dioxide concentration is greater than the concentration threshold. If it is , then the target control mode can be determined from the first control mode, the second control mode, the third control mode, and the fourth control mode according to the carbon dioxide concentration in the tunnel to control the piston air valve to open, so as to inject fresh air into the tunnel through the piston air valve to reduce the carbon dioxide concentration. Of course, the control mode can also be determined in combination with the air pressure, the outdoor air enthalpy value, and the tunnel air enthalpy value, or the opening of the piston air valve can be calculated based on at least one of the air pressure, the carbon dioxide concentration, the outdoor air enthalpy value, and the tunnel air enthalpy value. On the one hand, it can avoid frequently controlling the opening of the piston air valve when the temperature difference between the outdoor temperature and the tunnel temperature is small. On the other hand, temperature control can be ignored when the temperature difference is small, which can avoid the problem of low effect of temperature control on reducing energy consumption when the temperature difference is small, and can mainly control the piston air valve based on at least one of the air pressure, the carbon dioxide concentration, the outdoor air enthalpy value, and the tunnel air enthalpy value to ensure the safe operation of the subway tunnel and improve the quality of fresh air in the subway tunnel.

[0062] S303: Obtain the passenger flow curve of the tunnel section.

[0063] The passenger flow curve may be a daily passenger flow curve of a tunnel section, wherein the daily passenger flow curve takes time as the horizontal axis and passenger flow (number of passengers) as the vertical axis, such as Figure 4 Shown is a schematic diagram of the daily passenger flow curve for 24 hours a day.

[0064] In one embodiment, the daily passenger flow curve may be a historical passenger flow curve of a tunnel section, such as the daily passenger flow curve of the previous day. In another embodiment, the daily passenger flow curve may also be a predicted daily passenger flow curve, such as the daily passenger flow curve of the current date predicted by the historical daily passenger flow curves of multiple dates before the current date. In yet another embodiment, the daily passenger flow curve may also be a passenger flow curve generated by real-time monitoring of passenger flow.

[0065] In another embodiment, since the carbon dioxide in the subway tunnel is mainly produced by the breathing of passengers in the train, a carbon dioxide concentration curve can also be obtained to reflect the passenger flow, such as Figure 6 The following is a schematic diagram of the carbon dioxide concentration curve. Figure 4 and Figure 6 The curve, daily passenger flow curve and carbon dioxide concentration change trends are roughly the same.

[0066] S304: Determine multiple time periods from the passenger flow curve.

[0067] In one embodiment, the first daytime low-peak passenger flow time period (such as the morning low-peak passenger flow period), the first daytime high-peak passenger flow time period (such as the morning rush hour), the second daytime low-peak passenger flow time period (such as after the morning rush hour and before the afternoon rush hour), the second daytime high-peak passenger flow time period (such as the afternoon rush hour) and the nighttime low-peak passenger flow time period can be determined from the daily passenger flow curve, and the first daytime low-peak passenger flow time period, the first daytime high-peak passenger flow time period, the second daytime low-peak passenger flow time period, the second daytime high-peak passenger flow time period and the nighttime low-peak passenger flow time period are arranged in chronological order, wherein the low-peak passenger flow may refer to a passenger flow less than a passenger flow threshold (such as Figure 4 The medium passenger flow threshold may be A, and the passenger flow threshold may be set according to the actual passenger flow conditions in different regions and on different routes), and the passenger flow peak may refer to a passenger flow greater than the passenger flow threshold (e.g. Figure 4 The medium passenger flow threshold can be A).

[0068] The first daytime low passenger flow time period can be the time period before the first passenger flow peak during the day, such as the morning time period every day. Figure 4 As shown, the first daytime low passenger flow time period may be from 5:00 to 7:00 a.m. (adjustable), and the first daytime peak passenger flow time period may be the first peak passenger flow time period during the day, such as Figure 4 As shown, the first daytime peak passenger flow time period may be from 7:00 to 9:00 a.m. (adjustable), and the second daytime low passenger flow time period may be the time period between the first passenger flow peak and the second passenger flow peak during the day, such as Figure 4As shown, the second daytime low passenger flow time period may be from 9:00 a.m. to 17:00 p.m. (adjustable), and the second daytime peak passenger flow time period may be the second peak passenger flow time period during the day, such as Figure 4 As shown, the second daytime peak passenger flow time period may be from 17:00 to 19:00 in the afternoon (adjustable), and the nighttime low passenger flow time period may be the time period after the second daytime peak passenger flow time period ends, such as Figure 4 As shown, the low-peak time period of nighttime passenger flow may be the time period after 19:00 every day. The above time periods are only examples. In practical applications, those skilled in the art may pre-configure various time periods in combination with the passenger flow of the tunnel section. The embodiment of the present invention does not limit the division of various time periods.

[0069] In one embodiment, Figure 5 The outdoor daily temperature curve is shown in Figure 1. Figure 5 It can be seen that due to the influence of the law of changes in the intensity of sunlight during the day, the temperature in the morning and evening is relatively low, and the temperature during the day is higher. Figure 4 The passenger flow curve shows that the outdoor temperature is low during the first daytime low-peak passenger flow period (before the morning peak), the first daytime peak passenger flow period (morning peak), the second daytime peak passenger flow period (evening peak) and the nighttime low-peak passenger flow period, and the temperature is high during the second daytime low-peak passenger flow period (between the morning peak and the evening peak). Based on this, the present embodiment can configure control modes for different time periods. The control modes configured for each time period are as follows:

[0070] The first control mode T1 is associated with the low-peak passenger flow period during the first day. The first control mode T1 is when the double-piston air valve is fully open, that is, during the non-peak period in the morning of a day, the two piston air valves in the tunnel section are both open. In the first control mode T1, the air exchange between the tunnel and the outdoors is the largest, and all the wind pressure in the tunnel is leaked to the outdoors through the open double-piston air valve.

[0071] The first daytime passenger flow peak period is associated with the second control mode T2. The second control mode is that the double piston air valves are fully open and the connecting air valve between the up tunnel and the down tunnel is fully open, that is, during the morning peak period of the day, the two piston air valves in the tunnel section are opened, and the connecting air valve between the up tunnel and the down tunnel is also opened. Under the second control mode T2, since the connecting air valve between the up tunnel and the down tunnel is opened, the air in the tunnel is partially circulated, and the wind pressure is balanced to the other tunnel through the connecting air valve. In the second control mode T2, the ventilation volume between the tunnel and the outdoors is less than the ventilation volume in the first control mode T1.

[0072] The second daytime low passenger flow time period is associated with the third control mode T3 and the fourth control mode T4. The third control mode is that the single piston air valve is fully open and the connecting air valve between the up tunnel and the down tunnel is fully open. The fourth control mode is that the single piston air valve is fully open and the connecting air valve between the up tunnel and the down tunnel is fully open and the ventilation valve on the platform door is opened. That is, during the daytime non-passenger flow period, one of the two piston air valves in the tunnel section can be opened, and the connecting air valve between the up tunnel and the down tunnel can be opened, or one of the two piston air valves in the tunnel section can be opened, and the connecting air valve between the up tunnel and the down tunnel can be opened, and the ventilation valve on the platform door can also be opened, so as to increase the partial circulation of air in the tunnel and reduce the ventilation volume between the tunnel and the outdoors.

[0073] The third control mode T3 may include the following two sub-modes T3-1 and T3-2:

[0074] Sub-mode T3-1: The piston air valve in front of the train is fully opened, the piston air valve behind the train is closed, and the connecting air valve between the up tunnel and the down tunnel is fully opened;

[0075] Sub-mode T3-2: The piston air valve behind the rear of the train is fully opened, the piston air valve in front of the train is closed, and the connecting air valve between the up tunnel and the down tunnel is fully opened.

[0076] As the train compresses the air in the tunnel when it is running, the piston air valve in front of the train head is fully opened to exhaust air to the outside. After the train passes through the tunnel section, more outdoor air enters the tunnel, that is, the ventilation volume of sub-mode T3-1 is greater than the ventilation volume of sub-mode T3-2.

[0077] Similarly, the fourth control mode T4 may include the following two sub-modes T4-1 and T4-2:

[0078] Sub-mode T4-1: The piston air valve in front of the train is fully opened, the piston air valve behind the train is closed, the connecting air valve between the up tunnel and the down tunnel is fully opened, and the ventilation valve on the platform door is opened;

[0079] Sub-mode T4-2: The piston air valve behind the rear of the train is fully opened, the piston air valve in front of the train is closed, the connecting air valve between the up tunnel and the down tunnel is fully opened, and the ventilation valve on the platform door is opened.

[0080] The ventilation volume of sub-mode T4-1 is greater than the ventilation volume of sub-mode T4-2.

[0081] The ventilation volume in the third control mode T3 and the fourth control mode T4 is smaller than that in the second control mode T2 because the single piston air valve is open.

[0082] The second control mode T2 is associated with the second daytime peak passenger flow period, that is, during the afternoon and evening peak periods of the day, both piston air valves in the tunnel section are opened, and the connecting air valve between the up tunnel and the down tunnel is also opened.

[0083] The low-peak passenger flow period at night is associated with the first control mode T1, that is, both piston air valves in the tunnel section are opened after the peak period in the middle and evening of the day.

[0084] It can be seen from the above-mentioned modes that the external ventilation volume of the first control mode T1, the second control mode T2, the third control mode T3, and the fourth control mode T4 decreases successively. In one embodiment, the fifth control mode T5 is also included. The fifth control mode T5 can be that the double piston air valve is closed, the connecting air valve between the up tunnel and the down tunnel is opened, and the ventilation valve on the station platform door is opened. In the fifth control mode T5, the air in the tunnel circulates between the up tunnel and the down tunnel, and between the tunnel and the station, and the ventilation volume between the piston air valve and the outside is 0 or is in a small opening state.

[0085] S305: Determine whether the current time is within any target time period among the multiple time periods.

[0086] After determining multiple time periods from the daily passenger flow curve, the target time period in which the current time is located can be determined. When the current time is in any target time period among the determined multiple time periods, S306 is executed. If the current time is not in the multiple time periods, it is determined that the trigger condition is not met, the piston air valve maintains the current state, and the piston air valve is not adjusted.

[0087] S306: Determine whether a preset trigger condition is met.

[0088] When the current time is in any target time period among the multiple time periods determined, it is determined that the preset trigger conditions are met. For example, when the current time is 7 a.m. (adjustable), it is determined that the current time is within the first daytime peak time period, and it is determined that the trigger conditions for piston air valve control in the first daytime peak time period are met.

[0089] S307: Determine the control mode pre-associated with the target time period as the target control mode.

[0090] In one embodiment, if the target time period is associated with a high air volume control mode and a low air volume control mode, the high air volume control mode or the low air volume control mode associated with the target time period is selected as the target control mode according to at least one of the air pressure and the carbon dioxide concentration.

[0091] Specifically, the air index in the tunnel also includes at least one of air pressure and carbon dioxide concentration, so as to determine whether the air pressure in the tunnel is greater than a preset pressure threshold. If so, the high air volume control mode associated with the target time period is selected as the target control mode. If not, it is determined whether the carbon dioxide concentration is greater than a preset carbon dioxide concentration threshold. When the carbon dioxide concentration is greater than or equal to the carbon dioxide concentration threshold, the high air volume control mode associated with the target time period is selected as the target control mode. When the carbon dioxide concentration is less than the carbon dioxide concentration threshold, the low air volume control mode associated with the target time period is selected as the target control mode.

[0092] Exemplarily, taking the association of the third control mode T3 and the fourth control mode T4 during the second daytime low passenger flow time period of the target time period as an example, the third control mode T3 is a high ventilation volume control mode, and the fourth control mode T4 is a low air volume control mode. It can be first determined whether the pressure in the tunnel is greater than the set safety pressure threshold. If so, the third control mode T3 is selected as the target control mode to discharge the pressure in the tunnel with a large ventilation volume. If not, it is further determined whether the carbon dioxide concentration in the tunnel is greater than the preset concentration threshold. If so, the third control mode T3 is selected as the target control mode to inject outdoor fresh air into the tunnel with a large ventilation volume to reduce the carbon dioxide concentration in the tunnel. If the carbon dioxide concentration is less than the preset concentration threshold, the fourth control mode T4 can be selected as the target control mode to reduce the ventilation volume between the tunnel and the outdoors to avoid introducing a large amount of outdoor heat when the outdoor temperature is greater than the tunnel temperature.

[0093] In the embodiment of the present invention, the first control mode T1 and the second control mode T2 are respectively used to control the opening of the double-piston air valve in the first daytime low-peak passenger flow period (morning non-peak period) and the first daytime peak passenger flow period (morning peak period), and the third control mode T3 and the fourth control mode T4 are used to control the opening of the single-piston air valve in the second daytime low-peak passenger flow period (this daytime low-peak passenger flow period is a high temperature period of the day), and the second control mode T2 and the first control mode T1 are respectively used to control the opening of the double-piston air valve in the second daytime peak passenger flow period (evening peak period) and the nighttime low-peak passenger flow period, so that the double-piston air valve is opened when the outdoor temperature is low in the morning and evening of the day, thereby increasing the ventilation volume between the tunnel and the outdoors, and the single-piston air valve (or air valve with a small opening degree) is opened when the temperature is high during the day. ), can use the low outdoor temperature in the morning and evening to introduce a large amount of outdoor fresh air, reduce the carbon dioxide concentration during the peak passenger flow period, and can open the piston air valve (or the air valve with a small opening) during the low passenger flow period when the outdoor temperature is higher during the day, reduce the ventilation volume between the tunnel and the outdoors, so as to reduce the outdoor heat entering the tunnel. By taking advantage of the characteristics of low temperature in the morning and evening and high temperature during the day, the asymmetric ventilation of the piston air valve can let the tunnel learn to breathe, increase ventilation when the outdoor temperature is low in the morning and evening, and reduce ventilation when the outdoor temperature is high during the day, so as to reduce the tunnel temperature, reduce the working environment temperature of trains and stations, reduce the temperature of train fresh air and station fresh air (station piston air leakage air accounts for about 30% of the total air volume), reduce the energy consumption of train and station ventilation and air-conditioning systems, and achieve energy-saving effects.

[0094] In another embodiment, if the outdoor temperature is higher than the tunnel temperature, the condensation temperature (i.e., dew point temperature) or fog temperature can also be determined based on the outdoor temperature and outdoor humidity. If the condensation temperature or fog temperature is lower than the tunnel temperature, it is determined that no condensation or fog will occur when the outdoor air enters the tunnel, and there is no need to adjust the piston air valve to prevent condensation or fog. If the condensation temperature or fog temperature is higher than the tunnel temperature, it is determined that the preset trigger condition is met, and the preset fifth control mode is determined as the target control mode. The fifth control mode is that the double piston air valve is closed (or the air valve is slightly opened), the connecting air valve between the up tunnel and the down tunnel is fully opened, and the ventilation valve on the platform door is opened. Specifically, a comparison table of condensation temperature and fog temperature of air with different temperatures and humidities can be pre-configured, and the condensation temperature or fog temperature of the current outdoor temperature and outdoor humidity can be determined from the comparison table. If the condensation temperature or fog temperature is higher than the tunnel temperature and tunnel wall temperature, condensation or fog will form on the tunnel wall after the outdoor air enters the tunnel. In order to avoid condensation on the tunnel wall or fog formation in the tunnel, the double-piston air valve can be controlled to close to prevent outdoor air from entering the tunnel, thereby preventing electronic equipment and lines in the tunnel from causing safety hazards due to condensation, or preventing the formation of fog that affects the driver's line of sight, thereby improving the safety performance of subway operation.

[0095] Of course, after the double-piston air valve is closed, the connecting air valve between the up tunnel and the down tunnel can be fully opened, and the ventilation valve on the platform door can be opened to avoid excessive air pressure in the tunnel from causing impact on the station screen door and train operation. Furthermore, if the connecting air valve between the up tunnel and the down tunnel is fully opened, and the ventilation valve on the platform door is opened, the air pressure in the tunnel is still greater than the safety pressure threshold, the piston air valve can also be opened with a smaller opening to release pressure to the outside when the pressure in the tunnel is too high.

[0096] S308: Determine whether the outdoor temperature is higher than a first temperature threshold.

[0097] If the outdoor temperature is lower than the tunnel temperature, for example, the outdoor temperature in winter is usually lower than the tunnel temperature, it can be further determined whether the outdoor temperature is higher than a first temperature threshold. The first temperature threshold can be set to different values ​​according to different regions, for example, it can be 0°C. If the outdoor temperature is higher than the first temperature threshold, S309 can be executed; if the outdoor temperature is lower than the first temperature threshold, S310 can be executed.

[0098] S309: Determine the preset first control mode or the second control mode as the target control mode.

[0099] Exemplarily, if the outdoor temperature is above 0°C and the tunnel temperature is higher than the outdoor temperature, the preset first control mode T1 or second control mode T2 can be used as the target control mode to control the double-piston air valve to be fully open, so that when the outdoor temperature is higher than 0°C all day in winter and the tunnel temperature is higher than the outdoor temperature, the double-piston air valve can be opened all day long, thereby introducing outdoor cold in winter and realizing cold storage in the tunnel in winter.

[0100] S310: Determine whether the tunnel temperature is lower than a second temperature threshold.

[0101] If the outdoor temperature is lower than the first temperature threshold, such as lower than 0°C, it can be further determined whether the tunnel temperature is lower than the second temperature threshold, for example, whether the tunnel temperature is lower than 5°C. If so, execute S311, if not, execute S312.

[0102] S311. When the tunnel temperature is lower than or equal to the second temperature threshold, determine the preset fifth control mode as the target control mode.

[0103] Exemplarily, when the outdoor temperature is below 0°C and the tunnel temperature is below 5°C, the fifth control mode can be selected as the target control mode to close the double-piston air valve and open the connecting air valve between the up tunnel and the down tunnel and the ventilation valve on the platform door, so as to close the double-piston air valve or open the piston air valve with a small opening when the outdoor temperature is below 0°C and the tunnel temperature is below 5°C during the day or at night in winter, so as to avoid the introduction of excessive outdoor cold into the tunnel during the low temperature in winter and damage the fire-fighting pipes or other equipment in the tunnel.

[0104] S312: When the tunnel temperature is higher than the second temperature threshold, the preset third control mode or the fourth control mode is used as the target control mode.

[0105] Exemplarily, when the outdoor temperature is below 0°C and the tunnel temperature is above 5°C, the third control mode or the fourth control mode can be selected as the target control mode, so that when the outdoor temperature is below 0°C and the tunnel temperature is above 5°C during the day or at night in winter, the single-piston air valve is controlled to open, and the connecting air valve between the up tunnel and the down tunnel and the ventilation valve on the platform door are opened. On the one hand, external cold energy can be introduced to realize tunnel cold storage. On the other hand, the air in the tunnel can be discharged to the station platform, and the heat generated by the train operation in the tunnel can be released as a heat source to the station platform, thereby increasing the temperature of the station platform in winter and reducing the energy consumption of the station air-conditioning system.

[0106] In one embodiment, before S302, it can also be determined whether the tunnel air pressure is greater than a preset pressure threshold. If so, the opening of the piston air valve in the tunnel section is controlled according to the tunnel air pressure; if not, S302 is executed to perform tunnel temperature control to ensure that the piston air valve is controlled when the tunnel air pressure is within a safe pressure range, wherein the opening of the piston air valve is positively correlated with the tunnel air pressure, that is, when the tunnel air pressure is greater than the pressure threshold, the greater the tunnel air pressure, the greater the opening of the piston air valve.

[0107] In another optional embodiment, when the tunnel air pressure is less than a preset pressure threshold, it can also be determined before S302 whether the outdoor particulate matter concentration is greater than a preset concentration threshold. If so, it is determined that the preset trigger condition is met, and the preset fifth control mode is determined as the target control mode. Specifically, the concentration of PM2.5 or PM10 in the air outside the tunnel can be monitored in real time. If the outdoor PM2.5 or PM10 concentration is greater than the concentration threshold, the piston air valve is controlled to be closed through the fifth control mode. Of course, it can also be opened with a small opening to avoid the introduction of PM2.5 or PM10 into the tunnel and outdoor ventilation when the outdoor PM2.5 or PM10 concentration is too high, thereby reducing the air quality in the tunnel, thereby ensuring that the PM2.5 or PM10 concentration in the tunnel is within a reasonable range.

[0108] In another embodiment, when the air pressure in the tunnel is less than the pressure threshold and the concentration of particulate matter is less than the preset concentration threshold, it can be determined whether the carbon dioxide concentration in the tunnel is greater than the preset concentration threshold. If so, one of the preset first control mode, second control mode, third control mode and fourth control mode is determined as the target control mode, so that when the carbon dioxide concentration is greater than the concentration threshold, outdoor fresh air is introduced into the tunnel through the fully open double-piston air valve or the single-piston air valve, so as to reduce the carbon dioxide concentration in the tunnel, enable the train to run in an environment with low carbon dioxide concentration, and improve the air quality in the train.

[0109] It should be noted that when controlling the piston air valve, the priority order of various indicators in the air indicators in the tunnel is: fire detection > pressure > humidity > PM2.5 or PM10 > carbon dioxide concentration > temperature, among which humidity can be considered only when the outdoor temperature is greater than the tunnel temperature. In addition, if the station is an open platform (without platform screen doors), pressure can be ignored. In addition, PM2.5 or PM10 can also be ignored. It can only be monitored without piston air valve control. When PM2.5 or PM10 exceeds the standard, it can prompt to clean the tunnel to reduce PM2.5 or PM10. Tunnel fire detection is used as the basis for judging whether a fire has occurred in the tunnel, and its fire control mode is not restricted.

[0110] S313. Control the opening of the piston air valve in the tunnel section according to the target control mode.

[0111] In one embodiment, the target control mode includes the opening time of the piston air valve. The piston air valve can be controlled to open with a maximum air volume, and a timer is started to count the time. When the counted time is equal to the opening time, the piston air valve is controlled to close.

[0112] In yet another embodiment, the target control mode includes a target opening of the piston air valve, and the piston air valve may be controlled so that the opening of the piston air valve is equal to the target opening.

[0113] Before the control method of the embodiment of the present invention was adopted in Guangzhou Metro Line 1, the highest tunnel temperature reached 39°C and the lowest was only 32°C. The highest outdoor daytime temperature in summer was about 35°C. If the piston air valve was fully open all year round in summer, the temperature of the tunnel would be higher than 32°C after the outdoor heat was introduced in summer. After adopting the control method of the embodiment of the present invention, the summer tunnel temperature was stabilized at about 25°C to 26°C for many consecutive years (more than 3 years), and the A and B ends of the station were equipped with a set of ventilation and air-conditioning systems, which met the heating and cooling requirements of the station (passengers and electromechanical equipment) and the tunnel section and train (passengers and train brake resistors and brakes). Even after the summer temperature of the tunnel was stabilized at about 25°C to 26°C, the station only needed to ventilate in summer and use the tunnel as a cold source in summer. Figure 7As shown, the station is ventilated only through piston air valves, some areas do not require air conditioning or the air conditioning runs at a low load, and the ventilation and air conditioning system can save more than 50% energy.

[0114] The embodiments of the present invention have the following beneficial effects:

[0115] 1. When the outdoor temperature is greater than the tunnel temperature, the first daytime low-peak passenger flow time period (before the morning peak), the first daytime peak passenger flow time period (morning peak), the second daytime low-peak passenger flow time period (daytime low peak), the second daytime peak passenger flow time period (evening peak) and the nighttime low-peak passenger flow time period are divided by the daily passenger flow curve and associated with corresponding control modes, so that the double piston air valve is opened when the outdoor temperature is low in the morning and evening of the day, and the piston air valve is opened alone or with a small opening when the temperature is high during the day. A large amount of outdoor fresh air can be introduced when the outdoor temperature is low in the morning and evening of the day to reduce the carbon dioxide concentration during the peak passenger flow period. The piston air valve can be opened alone or with a small opening during the low-peak passenger flow time period when the outdoor temperature is high during the day to reduce the outdoor heat entering the tunnel. By virtue of the characteristics of low temperature in the morning and evening and high temperature during the day, the ventilation of the above-mentioned asymmetric piston air valve can achieve the purpose of lowering the tunnel temperature, lowering the working environment temperature of the train and the station, lowering the temperature of the train fresh air and the station fresh air (the leakage air of the station piston air accounts for about 30% of the total air volume), and reducing the energy consumption of the ventilation and air-conditioning systems of the train and the station.

[0116] 2. Since the outdoor temperature is usually higher than the tunnel temperature in summer and lower than the tunnel temperature in winter, the temperature difference between the outdoor temperature and the tunnel temperature is small during the Spring Festival and autumn. The piston air valve can be opened or even closed when the temperature is high during the day in summer to reduce external heat input and release the cold source accumulated in the tunnel through internal circulation in the tunnel. When the temperature is low in the morning and evening in summer, the piston air valve can be opened twice to increase the ventilation volume between the tunnel and the outdoors, so as to achieve heat storage in the tunnel in summer and store heat sources in winter. Under the premise of ensuring that the equipment is not frozen in winter, the opening of the piston air valve is increased to introduce outdoor cold in winter to achieve cold storage in the tunnel and store cold sources in summer, thus achieving asymmetric ventilation in summer and winter, releasing the cold source accumulated in the tunnel in winter and storing heat in summer, releasing the heat source accumulated in the tunnel in summer and storing cold in winter, and achieving asymmetric ventilation in summer and winter so that the tunnel can learn to breathe and store cold or heat in the tunnel. The tunnel can be used as a natural cold source and heat source in different seasons, thus reducing the energy consumption of subway operation and achieving energy saving of air conditioning in subway tunnel ventilation system.

[0117] 3. When the piston air valve is controlled, the temperature, humidity, air pressure, carbon dioxide concentration, PM2.5 or PM10 in the subway tunnel are monitored. When the piston air valve is controlled, the impact of tunnel pressure, humidity and carbon dioxide concentration on the safe operation of the subway is considered, so as to achieve energy saving while reducing safety risks.

[0118] Embodiment 3

[0119] Figure 8 This is a schematic diagram of the structure of a subway tunnel piston air valve control device provided by the third embodiment of the present invention. Figure 8 As shown, the subway tunnel piston air valve control device includes:

[0120] The air index monitoring module 801 is used to monitor the air index in the tunnel and the outdoor air index in each tunnel section of the subway tunnel, wherein the air index in the tunnel and the outdoor air index at least include temperature and humidity;

[0121] A trigger condition determination module 802 is used to determine whether a preset trigger condition is met according to at least one of the temperature and humidity in the tunnel air index and the outdoor air index, and if so, execute a target control mode determination module 803;

[0122] A target control mode determination module 803 is used to determine a target control mode pre-associated with the satisfied trigger condition;

[0123] The piston air valve control module 804 is used to control the opening of the piston air valve in the tunnel section according to the target control mode.

[0124] Optionally, the air index in the tunnel includes the tunnel temperature, the outdoor air index includes the outdoor temperature, and the trigger condition judgment module 802 includes:

[0125] A first temperature judgment submodule is used to judge whether the outdoor temperature is higher than the tunnel temperature. If so, the passenger flow curve acquisition submodule is executed; if not, the second trigger condition judgment submodule is executed;

[0126] A passenger flow curve acquisition submodule, used for acquiring the passenger flow curve of the tunnel section;

[0127] A first trigger condition judgment submodule, used to judge whether a preset trigger condition is met according to the passenger flow curve;

[0128] The second trigger condition judgment submodule is used to judge whether a preset trigger condition is met according to the outdoor temperature and the tunnel temperature.

[0129] Optionally, the first trigger condition judgment submodule includes:

[0130] A time period division unit, used to determine a plurality of time periods from the passenger flow curve;

[0131] A time judgment unit, used to judge whether the current time is within any target time period among multiple time periods, and if so, execute the determination unit;

[0132] A determination unit, used to determine whether a preset trigger condition is satisfied;

[0133] The target control mode determination module 803 includes:

[0134] The first target control mode determination submodule is used to determine the control mode pre-associated with the target time period as the target control mode.

[0135] Optionally, the passenger flow curve is a daily passenger flow curve, and the time period division unit is used to:

[0136] Determine the first daytime low-peak passenger flow time period, the first daytime high-peak passenger flow time period, the second daytime low-peak passenger flow time period, the second daytime high-peak passenger flow time period and the nighttime low-peak passenger flow time period from the daily passenger flow curve, and arrange the first daytime low-peak passenger flow time period, the first daytime high-peak passenger flow time period, the second daytime low-peak passenger flow time period, the second daytime high-peak passenger flow time period and the nighttime low-peak passenger flow time period in chronological order;

[0137] The first daytime low passenger flow time period is associated with a first control mode, and the first control mode is that the double piston air valve is fully open;

[0138] The first daytime peak passenger flow period is associated with a second control mode, wherein the second control mode is that the double piston air valve is fully opened and the connecting air valve between the up tunnel and the down tunnel is fully opened;

[0139] The second daytime low passenger flow period is associated with a third control mode and a fourth control mode, the third control mode is that the single piston air valve is fully opened and the connecting air valve between the up tunnel and the down tunnel is fully opened, and the fourth control mode is that the single piston air valve is fully opened and the connecting air valve between the up tunnel and the down tunnel is fully opened and the ventilation valve on the platform door is opened;

[0140] The second daytime passenger flow peak time period is associated with the second control mode;

[0141] The nighttime low passenger flow time period is associated with the first control mode;

[0142] The external ventilation volumes in the first control mode, the second control mode, the third control mode, and the fourth control mode decrease in sequence.

[0143] Optionally, the air index in the tunnel further includes at least one of air pressure and carbon dioxide concentration, and the first target control mode determination submodule includes:

[0144] A control mode selection unit is used to select the high air volume control mode or the low air volume control mode associated with the target time period as the target control mode according to at least one of the air pressure and the carbon dioxide concentration when the target time period is associated with a high air volume control mode and a low air volume control mode.

[0145] Optionally, when the target time period is associated with a high air volume control mode and a low air volume control mode, the control mode selection unit includes:

[0146] A pressure judgment subunit, used to judge whether the air pressure in the tunnel is greater than a preset pressure threshold, and if so, execute the first high air volume selection subunit, and if not, execute the carbon dioxide concentration judgment subunit;

[0147] A first high air volume selection subunit, configured to select a high air volume control mode associated with the target time period as a target control mode;

[0148] a carbon dioxide concentration judging subunit, for judging whether the carbon dioxide concentration is greater than a preset carbon dioxide concentration threshold, and if so, executing a first high air volume selecting subunit, and if not, executing a low air volume selecting subunit;

[0149] a first high air volume selection subunit, configured to select the high air volume control mode associated with the target time period as the target control mode when the carbon dioxide concentration is greater than or equal to the carbon dioxide concentration threshold;

[0150] The low air volume selection subunit is used to select the low air volume control mode associated with the target time period as the target control mode when the carbon dioxide concentration is less than the carbon dioxide concentration threshold.

[0151] Optionally, the outdoor air index further includes outdoor humidity, and the trigger condition judgment module 802 further includes:

[0152] A condensation or fog temperature determination submodule, for determining the condensation temperature or fog temperature according to the outdoor temperature and the outdoor humidity if the outdoor temperature is higher than the tunnel temperature;

[0153] A first determination submodule, configured to determine whether a preset trigger condition is satisfied if the condensation temperature or the mist temperature is greater than the tunnel temperature;

[0154] The target control mode determination module 803 includes:

[0155] The second target control mode determination submodule is used to determine the preset fifth control mode as the target control mode, wherein the fifth control mode is that the double-piston air valve is closed, the connecting air valve between the up tunnel and the down tunnel is fully open, and the ventilation valve on the platform door is opened.

[0156] Optionally, the trigger condition determination module 802 further includes:

[0157] A second temperature judgment submodule is used to judge whether the outdoor temperature is higher than a preset temperature threshold if the outdoor temperature is higher than the tunnel temperature, and if so, execute a second determination submodule;

[0158] A second determining submodule, used to determine whether a preset trigger condition is met;

[0159] The target control mode determination module 803 includes:

[0160] The third target control mode determination submodule is used to determine the preset fifth control mode as the target control mode, wherein the fifth control mode is that the double-piston air valve is closed, the connecting air valve between the up tunnel and the down tunnel is fully open, and the ventilation valve on the platform door is opened.

[0161] Optionally, the outdoor air index further includes an outdoor air enthalpy value, the tunnel air index further includes a tunnel air enthalpy value, and the trigger condition judgment module 802 further includes:

[0162] A temperature difference calculation submodule, configured to calculate the difference between the outdoor temperature and the tunnel temperature as the temperature difference if the outdoor temperature is higher than the tunnel temperature;

[0163] The temperature difference judgment submodule is used to judge whether the temperature difference is greater than a preset temperature difference threshold value. If so, the passenger flow curve acquisition submodule is executed; if not, the control mode selection submodule is executed;

[0164] The control mode selection submodule is used to select a control mode as a target control mode from a preset first control mode, a second control mode, a third control mode and a fourth control mode according to at least one of the air pressure, the carbon dioxide concentration, the outdoor air enthalpy value and the tunnel air enthalpy value in the air index in the tunnel.

[0165] Optionally, the second trigger condition judgment submodule includes:

[0166] an outdoor temperature determination unit, configured to determine whether the outdoor temperature is higher than a first temperature threshold, and if so, execute a first target control mode determination unit, and if not, execute a tunnel temperature determination unit;

[0167] A first target control mode determination unit, used to determine a preset first control mode or a second control mode as a target control mode;

[0168] a tunnel temperature determination unit, configured to determine whether the tunnel temperature is lower than a second temperature threshold, and if so, execute the second target control mode determination unit; if not, execute the third target control mode determination unit;

[0169] a second target control mode determining unit, configured to determine a preset fifth control mode as a target control mode when the tunnel temperature is lower than or equal to the second temperature threshold;

[0170] The third target control mode determination unit is configured to use the preset third control mode or the fourth control mode as the target control mode when the tunnel temperature is higher than the second temperature threshold.

[0171] Optionally, the outdoor air index includes outdoor micro-particle concentration and also includes:

[0172] A particle concentration determination module, used to determine whether the outdoor micro-particle concentration is greater than a preset concentration threshold, if so, execute the trigger condition satisfaction determination module, if not, execute the trigger condition determination module 802;

[0173] A trigger condition satisfaction determination module is used to determine whether a preset trigger condition is satisfied;

[0174] The target control mode determination module 803 includes:

[0175] The fourth target control mode determination submodule is used to set the preset fifth control mode as the target control mode.

[0176] Optionally, the air index in the tunnel also includes air pressure, and also includes:

[0177] A pressure judgment module, used to judge whether the air pressure is greater than a preset pressure threshold, if so, execute the opening control module, if not, execute the trigger condition judgment module 802;

[0178] An opening control module is used to control the opening of the piston air valve in the tunnel section according to the air pressure.

[0179] Optionally, the target control mode includes the opening time of the piston air valve, and the piston air valve control module 804 includes:

[0180] A timing submodule, used for controlling the piston air valve to open at a maximum air volume and starting a timer to count the duration;

[0181] The closing submodule is used to control the piston air valve to close when the counted duration is equal to the opening duration.

[0182] Optionally, the target control mode includes a target opening of the piston air valve, and the piston air valve control module 804 includes:

[0183] The opening control submodule is used to control the piston air valve so that the opening of the piston air valve is equal to the target opening.

[0184] The subway tunnel piston air valve control device provided in the embodiment of the present invention can execute the subway tunnel piston air valve control method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0185] Embodiment 4

[0186] Fig. 9 A schematic diagram of the structure of an electronic device 40 that can be used to implement an embodiment of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0187] like Fig. 9 As shown, the electronic device 40 includes at least one processor 41, and a memory connected to the at least one processor 41, such as a read-only memory (ROM) 42, a random access memory (RAM) 43, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 41 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 42 or the computer program loaded from the storage unit 48 to the random access memory (RAM) 43. In the RAM 43, various programs and data required for the operation of the electronic device 40 can also be stored. The processor 41, the ROM 42, and the RAM 43 are connected to each other through a bus 44. An input / output (I / O) interface 45 is also connected to the bus 44.

[0188] A number of components in the electronic device 40 are connected to the I / O interface 45, including: an input unit 46, such as a keyboard, a mouse, etc.; an output unit 47, such as various types of displays, speakers, etc.; a storage unit 48, such as a disk, an optical disk, etc.; and a communication unit 49, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 49 allows the electronic device 40 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0189] The processor 41 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 41 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 41 executes the various methods and processes described above, such as a subway tunnel piston air valve control method.

[0190] In some embodiments, the subway tunnel piston air valve control method can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 48. In some embodiments, part or all of the computer program can be loaded and / or installed on the electronic device 40 via the ROM 42 and / or the communication unit 49. When the computer program is loaded into the RAM 43 and executed by the processor 41, one or more steps of the subway tunnel piston air valve control method described above can be performed. Alternatively, in other embodiments, the processor 41 can be configured to execute the subway tunnel piston air valve control method in any other appropriate manner (for example, by means of firmware).

[0191] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0192] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0193] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0194] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0195] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0196] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0197] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0198] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for controlling a piston air valve in a subway tunnel, characterized in that: Piston dampers used to control various tunnel sections in subway tunnels, including: Monitoring the tunnel air index and outdoor air index of each tunnel section in the subway tunnel, wherein the tunnel air index and the outdoor air index at least include temperature and humidity; Determining whether a preset trigger condition is met according to at least one of the temperature and humidity in the tunnel air index and the outdoor air index; If so, determining a target control mode pre-associated with the satisfied trigger condition; The opening of the piston air valve of the tunnel section is controlled according to the target control mode.

2. The subway tunnel piston air valve control method according to claim 1, characterized in that: The tunnel air index includes the tunnel temperature, the outdoor air index includes the outdoor temperature, and judging whether a preset trigger condition is met according to at least one of the temperature and humidity in the tunnel air index and the outdoor air index includes: Determining whether the outdoor temperature is higher than the tunnel temperature; If yes, obtaining the passenger flow curve of the tunnel section; Determining whether a preset trigger condition is met according to the passenger flow curve; If not, it is determined whether a preset trigger condition is met according to the outdoor temperature and the tunnel temperature.

3. The subway tunnel piston air valve control method according to claim 2 is characterized in that: Judging whether a preset trigger condition is met according to the passenger flow curve includes: determining a plurality of time periods from the passenger flow curve; Determine whether the current time is within any target time period among multiple time periods; If so, determine that the preset trigger condition is met; Determine the target control mode pre-associated with the satisfied trigger condition, including: The control mode pre-associated with the target time period is determined as the target control mode.

4. The subway tunnel piston air valve control method according to claim 3 is characterized in that: The passenger flow curve is a daily passenger flow curve, and multiple time periods are determined from the passenger flow curve, including: Determine the first daytime low-peak passenger flow time period, the first daytime high-peak passenger flow time period, the second daytime low-peak passenger flow time period, the second daytime high-peak passenger flow time period and the nighttime low-peak passenger flow time period from the daily passenger flow curve, and arrange the first daytime low-peak passenger flow time period, the first daytime high-peak passenger flow time period, the second daytime low-peak passenger flow time period, the second daytime high-peak passenger flow time period and the nighttime low-peak passenger flow time period in chronological order; The first daytime low passenger flow time period is associated with a first control mode, and the first control mode is that the double piston air valve is fully open; The first daytime peak passenger flow period is associated with a second control mode, wherein the second control mode is that the double piston air valve is fully opened and the connecting air valve between the up tunnel and the down tunnel is fully opened; The second daytime low passenger flow period is associated with a third control mode and a fourth control mode, the third control mode is that the single piston air valve is fully opened and the connecting air valve between the up tunnel and the down tunnel is fully opened, and the fourth control mode is that the single piston air valve is fully opened and the connecting air valve between the up tunnel and the down tunnel is fully opened and the ventilation valve on the platform door is opened; The second daytime passenger flow peak time period is associated with the second control mode; The nighttime low passenger flow time period is associated with the first control mode; The external ventilation volumes in the first control mode, the second control mode, the third control mode, and the fourth control mode decrease in sequence.

5. The subway tunnel piston air valve control method according to claim 3, characterized in that: The air index in the tunnel further includes at least one of air pressure and carbon dioxide concentration, and the control mode pre-associated with the target time period is determined as the target control mode, including: When the target time period is associated with a high air volume control mode and a low air volume control mode, the high air volume control mode or the low air volume control mode associated with the target time period is selected as the target control mode according to at least one of the air pressure and the carbon dioxide concentration.

6. The subway tunnel piston air valve control method according to claim 5, characterized in that: When the target time period is associated with a high air volume control mode and a low air volume control mode, selecting the high air volume control mode or the low air volume control mode associated with the target time period as the target control mode according to at least one of the air pressure in the tunnel and the carbon dioxide concentration in the tunnel includes: Determining whether the air pressure in the tunnel is greater than a preset pressure threshold; If yes, select the high air volume control mode associated with the target time period as the target control mode; If not, determining whether the carbon dioxide concentration is greater than a preset carbon dioxide concentration threshold; When the carbon dioxide concentration is greater than or equal to the carbon dioxide concentration threshold, selecting the high air volume control mode associated with the target time period as the target control mode; When the carbon dioxide concentration is less than the carbon dioxide concentration threshold, the low air volume control mode associated with the target time period is selected as the target control mode.

7. The subway tunnel piston air valve control method according to claim 2, characterized in that: The outdoor air index also includes outdoor humidity. Before obtaining the passenger flow curve of the tunnel section, the method further includes: If the outdoor temperature is higher than the tunnel temperature, determining the condensation temperature or the fog temperature according to the outdoor temperature and the outdoor humidity; If the condensation temperature or the mist temperature is higher than the tunnel temperature, it is determined that a preset trigger condition is met; Determine the target control mode pre-associated with the satisfied trigger condition, including: The preset fifth control mode is determined as the target control mode, in which the double-piston air valve is closed, the connecting air valve between the up tunnel and the down tunnel is fully opened, and the ventilation valve on the platform door is opened.

8. The subway tunnel piston air valve control method according to claim 2, characterized in that: Before obtaining the passenger flow curve of the tunnel section, the method further includes: If the outdoor temperature is higher than the tunnel temperature, determining whether the outdoor temperature is higher than a preset temperature threshold; If so, determine that the preset trigger condition is met; Determine the target control mode pre-associated with the satisfied trigger condition, including: The preset fifth control mode is determined as the target control mode, in which the double-piston air valve is closed, the connecting air valve between the up tunnel and the down tunnel is fully opened, and the ventilation valve of the platform door is opened.

9. The subway tunnel piston air valve control method according to claim 2, characterized in that: The outdoor air index further includes an outdoor air enthalpy value, and the tunnel air index further includes a tunnel air enthalpy value. Before obtaining the passenger flow curve of the tunnel section, the method further includes: If the outdoor temperature is higher than the tunnel temperature, calculating the difference between the outdoor temperature and the tunnel temperature as the temperature difference; Determining whether the temperature difference is greater than a preset temperature difference threshold; If yes, executing the step of obtaining the passenger flow curve of the station in the tunnel section; If not, a control mode is selected as the target control mode from among the preset first control mode, second control mode, third control mode and fourth control mode according to at least one of the air pressure, carbon dioxide concentration, outdoor air enthalpy and tunnel air enthalpy in the air index in the tunnel.

10. The subway tunnel piston air valve control method according to any one of claims 2 to 9, characterized in that: Judging whether a preset trigger condition is met according to the outdoor temperature and the tunnel temperature includes: Determining whether the outdoor temperature is higher than a first temperature threshold; If so, determining the preset first control mode or second control mode as the target control mode; If not, determining whether the tunnel temperature is lower than a second temperature threshold; When the tunnel temperature is lower than or equal to the second temperature threshold, determining the preset fifth control mode as the target control mode; When the tunnel temperature is higher than the second temperature threshold, the preset third control mode or the fourth control mode is used as the target control mode.

11. The subway tunnel piston air valve control method according to claim 1, characterized in that: The outdoor air index includes outdoor micro-particle concentration. Before judging whether a preset trigger condition is met according to the tunnel air index and at least one of the temperature and humidity in the outdoor air index, the method further includes: Determining whether the outdoor micro-particle concentration is greater than a preset concentration threshold; If so, determine that the preset trigger condition is met; The determining of a target control mode pre-associated with the satisfied trigger condition includes: Determining the preset fifth control mode as the target control mode; If not, a step is performed to determine whether a preset trigger condition is met according to at least one of the temperature and humidity in the tunnel air index and the outdoor air index.

12. The subway tunnel piston air valve control method according to claim 1, characterized in that: The air index in the tunnel also includes air pressure. Before judging whether a preset trigger condition is met according to the air index in the tunnel and at least one of the temperature and humidity in the outdoor air index, the method further includes: Determining whether the air pressure is greater than a preset pressure threshold; If so, controlling the opening of the piston air valve of the tunnel section according to the air pressure; If not, a step is performed to determine whether a preset trigger condition is met according to at least one of the temperature and humidity in the tunnel air index and the outdoor air index.

13. The subway tunnel piston air valve control method according to claim 1, characterized in that: The target control mode includes the opening time of the piston air valve, and the control of the opening of the piston air valve of the tunnel section according to the target control mode includes: Controlling the piston air valve to open at the maximum air volume, and starting a timer to count the duration; When the counted duration is equal to the opening duration, the piston air valve is controlled to close.

14. The subway tunnel piston air valve control method according to claim 1, characterized in that: The target control mode includes a target opening of the piston air valve, and controlling the opening of the piston air valve of the tunnel section according to the target control mode includes: The piston air valve is controlled so that the opening of the piston air valve is equal to the target opening.

15. A piston air valve control device for a subway tunnel, characterized in that: Piston dampers used to control various tunnel sections in subway tunnels, including: An air index monitoring module is used to monitor the air index inside the tunnel and the outdoor air index of each tunnel section in the subway tunnel, wherein the air index inside the tunnel and the outdoor air index at least include temperature and humidity; A trigger condition determination module, used to determine whether a preset trigger condition is met according to at least one of the temperature and humidity in the tunnel air index and the outdoor air index, and if so, execute a target control mode determination module; A target control mode determination module, used to determine a target control mode pre-associated with the satisfied trigger condition; The piston air valve control module is used to control the opening of the piston air valve in the tunnel section according to the target control mode.

16. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the subway tunnel piston air valve control method described in any one of claims 1-14.

17. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the subway tunnel piston air valve control method according to any one of claims 1 to 14 when executed.

18. A computer program product, characterized in that It comprises a computer program, which, when executed by a processor, implements the subway tunnel piston air valve control method according to any one of claims 1-14.

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