CN115817548A - Rail vehicle air conditioner control method, device and medium thereof - Google Patents

Abstract

The application discloses a rail vehicle air conditioner control method, a device and a medium thereof, relates to the technical field of rail vehicles, and is used for controlling an air conditioner system of a rail vehicle, aiming at the problem that the timeliness of adjusting fresh air volume by detecting carbon dioxide concentration through a sensor is not enough at present, the rail vehicle air conditioner control method is provided, the real-time weight of each carriage is sensed through the existing air spring on the rail vehicle, and because the mass of each carriage is known when a train is put into use formally, the total weight of passengers in the current carriage can be obtained through the pressure information of the air spring, so that the number of the passengers and the density of the passengers are obtained, the density of the passengers directly influences the consumption condition of oxygen in the carriage and the generation condition of carbon dioxide, compared with the method of determining the required input fresh air volume through the carbon dioxide concentration, the method of determining the fresh air volume according to the demand of the passengers is more direct and accurate, the problem of untimely air intake can not occur, and the riding experience of the passengers is improved.

Description

A rail vehicle air conditioning control method, device and medium thereof

technical field

The present application relates to the technical field of rail vehicles, in particular to a rail vehicle air conditioning control method, device and medium thereof.

Background technique

The rail vehicle air conditioning control system is mainly used to improve the internal environment of the vehicle and enhance the comfort of passengers. It is also a key system for controlling the air pressure inside and outside the vehicle. With the continuous development of the rail vehicle industry, the speed of rail vehicles is getting faster and faster, and the temperature, air intake and exhaust in the vehicle depend on the control of the air conditioning control system. For example, for the adjustment of the fresh air volume of the vehicle, at present, the main method is to detect the carbon dioxide concentration in the vehicle through the sensor, and adjust the fresh air volume according to the detected carbon dioxide concentration, so as to ensure the riding experience of the passengers in the vehicle.

However, this method of relying on sensors to detect the carbon dioxide concentration in the vehicle and then adjust the fresh air volume is not timely enough. The fresh air volume entering the vehicle is only related to the current carbon dioxide concentration. When the concentration drops to a relatively low level, the amount of fresh air entering the vehicle can only meet the needs of passengers, which will affect the ride experience of passengers and even bring danger.

Therefore, those skilled in the art urgently need a rail vehicle air-conditioning control method to solve the current problem of insufficient timeliness in adjusting the fresh air volume by detecting the carbon dioxide concentration through the sensor.

Contents of the invention

The purpose of this application is to provide a rail vehicle air conditioning control method, device and its medium to solve the current problem of insufficient timeliness in adjusting the fresh air volume by detecting the carbon dioxide concentration through the sensor.

In order to solve the above-mentioned technical problems, the present application provides a rail vehicle air conditioning control method, including:

Obtain pressure information on rail vehicle air springs;

Determining passenger density from pressure information;

Determine the fresh air volume according to the passenger density;

Control the air-conditioning fan to input fresh air according to the fresh air volume.

Preferably, it also includes:

Monitor the working status of the compressor and air conditioning fan in the air conditioning unit;

When the working state of the compressor or air-conditioning fan is abnormal, cut off the running state of the compressor or air-conditioning fan;

Obtain the abnormal information of the compressor or air conditioner fan, and call the corresponding prewritten model to control the compressor or air conditioner fan according to the abnormal information; wherein, the prewritten model includes different models for controlling equipment cooling, delay output and hiccup output.

Preferably, it also includes:

Obtain video information of rail vehicle video surveillance equipment;

Determine passenger density based on video information;

Correspondingly, determining the fresh air volume according to the passenger density includes:

The fresh air volume is determined according to the passenger density determined by the pressure information and the passenger density determined by the video information.

Preferably, it also includes:

Collect carbon dioxide concentration in rail vehicles through sensors;

Correspondingly, according to the passenger density determined by the pressure information and the passenger density determined by the video information, determining the fresh air volume includes:

The fresh air volume is determined according to the passenger density determined by the pressure information, the passenger density determined by the video information, and the carbon dioxide concentration.

Preferably, when the working state of the compressor or the air conditioner fan is abnormal, it also includes:

According to the current air-conditioning air supply mode, switch to other corresponding air-conditioning air supply modes to control the air-conditioning unit.

Preferably, it also includes:

If the concentration of carbon dioxide collected by the sensor exceeds the preset threshold, the first warning message is returned;

If the abnormal working state of the compressor or the air-conditioning fan lasts longer than the preset time period, the second warning message will be returned.

Preferably, it also includes:

Obtain the status information of each device in the air conditioning unit and send it to the display screen for display.

In order to solve the above technical problems, the present application also provides a rail vehicle air conditioning control device, including:

The pressure acquisition module is used to acquire the pressure information of the air spring of the rail vehicle;

a density determination module, configured to determine passenger density based on pressure information;

The air volume determination module is used to determine the fresh air volume according to the passenger density;

The fresh air control module is used to control the air conditioner fan to input fresh air according to the fresh air volume.

Preferably, the above-mentioned rail vehicle air-conditioning control device also includes:

The protection control module is used to monitor the working status of the compressor and air-conditioning fan in the air-conditioning unit; when the working status of the compressor or the air-conditioning fan is abnormal, cut off the running status of the compressor or the air-conditioning fan; obtain the status of the compressor or the air-conditioning fan Abnormal information, and call the corresponding pre-written model to control the compressor or air-conditioning fan according to the abnormal information; wherein, the pre-written model includes different models for controlling equipment cooling, delay output and hiccup output.

The video monitoring module is used to obtain video information of rail vehicle video monitoring equipment; determine passenger density according to the video information.

The carbon dioxide collection module is used to collect the carbon dioxide concentration in the rail vehicle through the sensor.

The mode switching module is used to switch to other corresponding air-conditioning air-supply modes to control the air-conditioning unit according to the current air-conditioning air-supply mode.

The alarm module is used to return the first alarm information if the carbon dioxide concentration collected by the sensor exceeds the preset threshold; if the abnormal working state of the compressor or the air-conditioning fan lasts longer than the preset time, return the second alarm information.

The status display module is used to obtain the status information of each device in the air conditioning unit and send it to the display screen for display.

In order to solve the above technical problems, the present application also provides a rail vehicle air conditioning control device, including:

memory for storing computer programs;

The processor is used to realize the steps of the above-mentioned rail vehicle air conditioning control method when executing the computer program.

In order to solve the above technical problems, the present application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above-mentioned rail vehicle air-conditioning control method are realized.

The air conditioning control method for a rail vehicle provided by this application senses the real-time weight of each carriage through the existing air spring on the rail vehicle. Since the mass of each carriage is known when the train is officially put into use, it can be controlled by the air spring. The total weight of the passengers in the current compartment can be obtained from the pressure information, and then the number of passengers and the passenger density can be obtained. The passenger density directly affects the consumption of oxygen and the generation of carbon dioxide in the compartment. Air volume, the method of determining the fresh air volume according to passenger needs is more direct and accurate, and there will be no problem of untimely air intake, which improves the passenger's riding experience and is conducive to protecting the personal safety of passengers.

The rail vehicle air-conditioning control device and the computer-readable storage medium provided by the present application correspond to the above method, and the effect is the same as above.

Description of drawings

In order to illustrate the embodiments of the present application more clearly, the following will briefly introduce the accompanying drawings used in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. As far as people are concerned, other drawings can also be obtained based on these drawings on the premise of not paying creative work.

Fig. 1 is a flow chart of a rail vehicle air conditioning control method provided by the present invention;

Fig. 2 is a flow chart of another rail vehicle air conditioning control method provided by the present invention;

Fig. 3 is a flow chart of a protection control mode method provided by the present invention;

Fig. 4 is a structural diagram of a rail vehicle air-conditioning control device provided by the present invention;

Fig. 5 is a structural diagram of another rail vehicle air-conditioning control device provided by the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of this application.

The core of the present application is to provide a rail vehicle air conditioning control method, device and medium thereof.

In order to enable those skilled in the art to better understand the solution of the present application, the present application will be further described in detail below in conjunction with the drawings and specific implementation methods.

For the current rail vehicles, the control of ventilation and temperature in the vehicle is realized by the vehicle air conditioning system. The core unit responsible for the control of the vehicle's air conditioning system is the air conditioning intelligent control unit (ACCU), and the ACCU and the vehicle central control unit (CCU) communication, receiving the control commands sent by the CCU (such as switching air-conditioning modes, temperature adjustment commands, ventilation commands, etc.), and then sending corresponding control signals to the equipment (air-conditioning fans, compressors, etc.) in each air-conditioning unit controlled by the ACCU , to achieve the corresponding function.

In the application of rail vehicle air conditioning control system, an important control function is to control the fresh air input in the vehicle. If there is no fresh air input into the vehicle for a long time or the input fresh air volume is not enough, the carbon dioxide concentration in the vehicle will increase. , bringing discomfort or even personal danger to passengers. At present, detection equipment such as peripheral sensors of rail vehicles is mostly used to detect the carbon dioxide concentration in the vehicle, and then the input fresh air volume is controlled according to the collected carbon dioxide concentration. Commonly, logic control can be realized by means of a threshold, for example, when the carbon dioxide concentration in the vehicle exceeds a certain threshold, fresh air is input into the vehicle; increase and so on. However, this method will inevitably face a problem. The adjustment of the fresh air volume input into the vehicle is based on the fact that the carbon dioxide concentration has reached a certain standard. If the increase in carbon dioxide cannot be known in advance, it will still affect the passenger experience. cause a certain impact.

In order to solve the above problems, this embodiment provides a rail vehicle air conditioning control method, as shown in Figure 1, including:

S11: Obtain the pressure information of the air spring of the rail vehicle.

For various vehicles in use today, in order to ensure the comfort of passengers, air springs are equipped to achieve shock absorption and other effects.

S12: Determine the passenger density according to the pressure information.

An air spring is a device that fills a sealed container with compressed air and utilizes the compressibility of the gas to achieve its elastic effect. Therefore, the gas pressure inside it can reflect the total weight of the current compartment to a certain extent. For rail vehicles put into use, the total mass of each car body is known, so the total mass of passengers in the car can be obtained according to the current pressure information of the air spring and the known total mass of the car body. Similarly, the size of the space in the compartment is also known, from which the density of passengers in the compartment can be calculated.

S13: Determine the fresh air volume according to the passenger density.

After obtaining the passenger density in the compartment, it is easy to determine the fresh air input required by the current compartment according to the production of carbon dioxide and the demand for oxygen per unit time according to different passenger densities.

S14: Control the air conditioner fan to input fresh air according to the fresh air volume.

Further, since the rail vehicle air conditioning control method provided by this application is mainly applied to rail vehicles, and most rail vehicles currently in use are equipped with video monitoring equipment, so this embodiment also provides A preferred embodiment, said method also includes:

S15: Obtain video information of the rail vehicle video surveillance equipment.

S16: Determine the passenger density according to the video information.

Correspondingly, step S13: determining the fresh air volume according to the passenger density is again:

S13: Determine the fresh air volume according to the passenger density determined by the pressure information and the passenger density determined by the video information.

It is easy to know that in the field of image recognition, technologies such as face recognition are becoming more and more mature. According to the video information returned by the video surveillance equipment installed in the car, the number of passengers can be determined through face recognition technology analysis, and then the number of passengers can be obtained. density. The accuracy of the results is related to the monitoring coverage of video surveillance cameras and the accuracy of face recognition algorithms.

The preferred solution provided by this embodiment provides another method for determining the passenger density. It also uses the existing hardware devices in the rail vehicle without additional equipment to determine the passenger density from another angle. Density schemes are used in combination to obtain more accurate passenger density determination results, thereby achieving more accurate adjustment of fresh air volume input and further improving passenger comfort.

In addition, this embodiment also provides another preferred implementation, the above-mentioned method also includes:

S17: Collect the carbon dioxide concentration in the rail vehicle through the sensor.

Correspondingly, step S13: according to the passenger density determined by the pressure information and the passenger density determined by the video information, the determination of the fresh air volume is specifically as follows:

S13: Determine the fresh air volume according to the passenger density determined by the pressure information, the passenger density determined by the video information, and the carbon dioxide concentration.

It should be noted that, in practical applications, there is no sequence restriction between steps S11, S12, steps S15, S16, and step S17, and Fig. 2 is only a possible implementation mode, and to be precise, these steps all occur Before step S13, there are no other restrictions.

As in the preferred solution provided by the above-mentioned embodiments, whether it is the pressure information returned by the air spring of the rail vehicle or the video information returned by the video monitoring equipment, the purpose is to determine the passenger density, which reflects the passenger's input of fresh air volume. The demand for a period of time in the future, and the carbon dioxide concentration detected by the sensor is the carbon dioxide concentration in the vehicle at the current moment, reflecting the current state in the vehicle. Passenger density can be used to know how much fresh air volume can be input to meet the needs of passengers for a period of time in the future, and the carbon dioxide concentration can be used to determine the passenger's demand for fresh air volume at the current moment. That is to say, the passenger density reflects the future, and the carbon dioxide concentration reflects the present, and the fresh air volume input determined by comprehensive consideration of the two is more accurate and more suitable for the actual needs of passengers.

Specifically, according to the passenger density, it can be determined how much fresh air can be input to reduce, maintain or increase the carbon dioxide concentration in the vehicle, and according to the carbon dioxide concentration, it can be known how the current carbon dioxide concentration in the car needs to change, so as to obtain more accurate and timely information. The input of fresh air maximizes the passenger experience. Moreover, the preferred solution provided by the above embodiment does not require additional equipment, and only needs to reuse the existing devices and equipment of the rail vehicle to achieve a more accurate result than the fresh air volume determined only based on the carbon dioxide concentration returned by the sensor. , optimize the passenger ride experience, and ensure the personal safety of passengers.

It should also be noted that for rail vehicles, which are divided into multiple carriages, the input of fresh air volume can also be controlled separately in different carriages. In practical applications, different passenger density and carbon dioxide concentration in each carriage should be considered. According to the situation, determine the appropriate fresh air volume for input.

The air-conditioning control method for rail vehicles provided by this application does not need to change the structure of rail vehicles, and does not need to add new equipment or devices. The pressure information of each car determines the number of passengers in each car, and then obtains the passenger density in each car, and uses the passenger density to reflect the demand for fresh air volume input in the future, so that the determined fresh air volume is more suitable for the passengers Compared with the carbon dioxide concentration collected by the sensor alone, the method provided by this application is more predictable for the adjustment of the fresh air volume, which fundamentally solves the problem that the untimely adjustment of the fresh air volume has a negative impact on the passenger experience. .

In practical applications, rail vehicle air conditioning control systems usually require air conditioning equipment to have two control modes: automatic control and manual control, and each control mode has six working modes: full cooling, semi-cooling, full heating, semi-warming, ventilation, and shutdown. There are more than a dozen protection requirements such as high voltage, low voltage, and overheating modes, involving many control strategies and monitoring signals, resulting in a more complex circuit structure and a greater possibility of system failure due to a single fault. Due to the importance of the air-conditioning control system for the control of the environment in the vehicle, how to maintain the stability of the environment in the vehicle when the air-conditioning control system breaks down is a problem that those skilled in the art pay attention to.

Based on this, the present embodiment provides a kind of preferred embodiment, and above-mentioned method also comprises:

S21: Monitor the working status of the compressor and the air-conditioning fan in the air-conditioning unit.

S22: When the working state of the compressor or the air-conditioning fan is abnormal, cut off the running state of the compressor or the air-conditioning fan.

S23: Obtain the abnormal information of the compressor or the air conditioner fan, and call the corresponding prewritten model to control the compressor or the air conditioner fan according to the abnormal information.

Among them, the pre-written model includes different control models for controlling device cooling, delay output and hiccup output.

In addition to controlling the air-conditioning unit and peripheral equipment, the ACCU also monitors its operating status. For the compressor and air-conditioning fan of the air-conditioning unit, it will enter the protection state when there is an abnormality, such as "low temperature alarm", "low pressure Alarm”, “overheat alarm” and other protection states, different protection states correspond to different abnormal situations.

When the air-conditioning unit fails, the ACCU needs to cut off the working status of the equipment in time. Corresponding to the alarm information of the above-mentioned different protection states, select the corresponding control model from the pre-written models stored in the internal storage to try to deal with the abnormal equipment, in order to solve the problem. Attempts to deal with abnormal problems include but are not limited to: cooling, delayed output, and hiccup output. The above-mentioned attempted treatment measures can solve most of the simple abnormalities or faults, thereby helping to improve the stability of the air-conditioning control system, that is, helping to ensure the normal and comfortable environment inside the vehicle.

In addition to trying to deal with abnormal equipment, ACCU should also closely monitor the environment inside the vehicle through peripheral equipment (mainly sensors that collect various vehicle condition information), focusing on indicators such as temperature and carbon dioxide concentration, and call other normal Advanced air-conditioning unit equipment ensures a stable environment in the car. Further, that is, when the working state of the compressor or the air conditioner fan is abnormal, the above method also includes:

S24: According to the current air-conditioning air supply mode, switch to other corresponding air-conditioning air supply modes to control the air-conditioning unit.

Exemplarily, if the current control command from the driver to the ACCU through the CCU is that the current mode is the full-cooling mode, and the air-conditioning unit that fails at this time is a compressor, and the air-conditioning fan is operating normally, then the full-cooling mode can be switched It is a semi-cooling mode or a temporary ventilation mode to maintain the stability of the vehicle's internal environment to the greatest extent, and to ensure that the passenger's ride comfort will not be greatly affected during the fault detection and troubleshooting process.

Similarly, there is no sequence limitation between step S24 and step S23, as shown in FIG. 3 is only a possible implementation.

A preferred solution provided in this embodiment is a solution for maintaining the stability of the vehicle's internal environment when the air-conditioning control system of a rail vehicle enters a protection mode due to equipment failure. Specifically, the operating status of each device in the air conditioning unit is monitored through ACCU and other control devices. If there is an abnormality, different pre-written models are called to try to solve it according to different abnormal problems, such as equipment cooling, delayed output, and hiccup output. The processing method can solve most of the simple abnormal problems, improve the stability of the air conditioning control system, and further guarantee the ride experience of the passengers.

Furthermore, if the abnormal problem cannot be solved by adopting the solutions of the above embodiments, it means that the problem of the air conditioning unit equipment may be serious or complicated, and it is necessary to remind the relevant personnel in time to troubleshoot and solve the problem, as well as the concentration of carbon dioxide, etc. Indicators that are closely related to passengers also need to be closely monitored, so this embodiment also provides a preferred implementation, the above method also includes:

If the concentration of carbon dioxide collected by the sensor exceeds the preset threshold, the first warning message is returned;

If the abnormal working state of the compressor or the air-conditioning fan lasts longer than the preset time period, the second warning message will be returned.

It is easy to understand that the content of the first alarm information and the second alarm information should be differentiated, so that relevant personnel can quickly determine the cause of the alarm according to the returned alarm information. However, this embodiment does not limit the form of alarm information. It can be displayed in the form of text, images, charts, etc. through the display screen installed in the driver's cab, or it can be displayed in the form of sound and light through buzzers, warning lights, etc. Alarms are issued in the form of signals. The alarm information can be sent to the train control center on the ground, except for the relevant personnel in the rail vehicle, to inform the rail vehicle that there is an abnormality, and the problem needs to be checked and solved in time.

Further, in addition to the above-mentioned abnormality or problem of notifying relevant personnel of the rail vehicle through the alarm message, this embodiment also provides a preferred implementation solution, the above method also includes:

Obtain the status information of each device in the air conditioning unit and send it to the display screen for display.

The above-mentioned display screen can be the general display screen arranged in the driver's cab, or the sub-control display screen at the position of the corresponding management personnel in each compartment, which is not limited in this embodiment. Similarly, this embodiment also does not limit the specific types of status information of each equipment of the air-conditioning unit displayed on the display screen, which may include but not limited to: control indicators, electrical parameters, service time, remaining life, etc. of each air-conditioning unit equipment .

Normally, the rail vehicle air conditioning control method provided by the above embodiment adjusts the fresh air volume input into the vehicle, which can effectively ensure that the carbon dioxide concentration in the vehicle will not be too high. However, in some extreme cases, such as rail vehicles Driving into the tunnel and the speed of the vehicle is too fast, resulting in negative pressure, fire, etc., the carbon dioxide concentration may still exceed the standard, so this embodiment monitors the carbon dioxide concentration, if it exceeds the preset threshold, it means that the current carbon dioxide concentration is too high , the people in the car may have a risk of suffocation, so as to remind the relevant personnel to increase the input of fresh air in the car, and at the same time speed up the emission of exhaust gas in the car to solve the problem.

In addition, when the air-conditioning unit fails, the above-mentioned embodiment proposes a solution suitable for most simple faults, which is realized through pre-written control models such as cooling equipment, delay output, and hiccup output. If it has not been resolved, it means that the abnormal problem is more complicated, and a different alarm message is issued to inform the relevant personnel to troubleshoot and solve the problem, so as to ensure the smooth operation of the air conditioning control system.

Moreover, as control devices such as the ACCU that controls the work of the air conditioning unit, it can also be reused to monitor the operating status of each device in the air conditioning unit, and send the obtained status information to the display screen for display in real time, which is convenient for relevant personnel Keeping track of the current operating conditions of rail vehicle air-conditioning units is helpful for predicting and troubleshooting faults and problems.

In order to further illustrate a rail vehicle air-conditioning control method provided by the present application, a possible implementation of a specific application in a rail vehicle will be described below in conjunction with an example:

Rail vehicles adopt the architecture of air-conditioning intelligent control unit (ACCU) + air-conditioning unit + peripheral equipment. Among them, the air-conditioning unit includes ventilators, compressors and other equipment, and the peripheral equipment includes sensors and so on.

The ACCU adopts a dual-system hot standby redundant control structure to enhance the availability of the air-conditioning control system. At the same time, it is equipped with devices or modules for over-current protection and automatic output cut-off for external loads to improve the overall security of the system; the analog quantity of the air-conditioning intelligent control unit The monitoring part and communication function adopt a single-series board to reduce costs. At the same time, fan speed control can be realized by communicating with an external fan controller; Space and weight, while using software programming to implement hard-wire control logic, reducing subsequent technical transformation and maintenance costs.

ACCU is mainly used to control and protect the air-conditioning equipment in the car. The control modes are divided into centralized control, manual control and protection control. The priority is: protection control>manual control>centralized control.

Among them, the automatic control mode (centralized control mode) realizes the communication between the vehicle central control unit (CCU) and the ACCU through Ethernet. The vehicle air conditioner controller starts the corresponding unit according to the condition of the vehicle and controls the temperature.

As for the manual control mode, when the ACCU detects that the communication with the CCU is abnormal or the manual control device of this car has a signal, it enters the manual control mode. Temperature conditions directly control the corresponding equipment in the air conditioning unit to start, and perform cooling or heating work.

The protection mode is also the method adopted in the above-mentioned method embodiment when the equipment in the air-conditioning unit fails. When the ACCU controls the operation of the compressor, ventilator and other equipment in the air-conditioning unit, it also monitors its status. During protections such as "low temperature alarm", "low pressure alarm" and "overheat alarm", the working status of the device will be cut off within 30ms, and the internal pre-written model will be used to try cooling, delay, and "hiccup" output according to different alarm situations, and closely monitor at the same time According to the temperature inside the car, start other working modes to ensure the environment control inside the car (for example, the original centralized control mode required full-cooling mode operation, and at this time, a compressor fails, and the ACCU switches to semi-cooling mode or temporary ventilation mode , to ensure that the environment inside the vehicle will not change greatly within the fault detection time), if the fault does not recover within a certain period of time, ACCU will report the fault to the vehicle for prompting.

In addition, ACCU also collects the carbon dioxide concentration in the car through the sensor of the peripheral equipment, and adjusts the fresh air volume in the car through the video monitoring equipment and the vehicle air spring pressure. When the carbon dioxide concentration in the car rises, the input of fresh air in the car is increased. At the same time, speed up the discharge of exhaust gas in the car; when the concentration of carbon dioxide in the car reaches a dangerous value, an alarm will be issued to avoid suffocation of personnel (the speed in the tunnel is too fast to cause negative pressure to discharge exhaust gas or fire and other situations), and at the same time, according to the video surveillance Passenger density, predict and adjust fresh air in advance. When the density of people in the car is not high, reducing the input of fresh air can effectively control the temperature inside the car and save energy consumption.

For the control of fresh air input, ACCU controls the fan speed through RS-485 (a communication interface standard), which reduces the number of fan control cables and reduces fan energy consumption. At the same time, the communication includes fan status information, which can provide comprehensive fan early warning. And alarm protection control and fan status diagnosis. By displaying the collected operation status of each equipment of the air conditioning system on the large screen in real time, including the usage time and remaining life time statistics (lifetime percentage) of all equipment in the air conditioning unit, it is convenient for relevant personnel to monitor the operation status of the air conditioning control system. At the same time, the above-mentioned operating state data is stored regularly, so as to facilitate the inspection and maintenance of the air-conditioning system.

In the above embodiments, a rail vehicle air conditioning control method is described in detail, and the present application also provides a corresponding embodiment of a rail vehicle air conditioning control device. It should be noted that this application describes the embodiments of the device part from two perspectives, one is based on the perspective of functional modules, and the other is based on the perspective of hardware.

Based on the perspective of functional modules, this embodiment provides a rail vehicle air conditioning control device, including:

Pressure obtaining module 31, is used for obtaining the pressure information of rail vehicle air spring;

A density determination module 32, configured to determine the passenger density according to the pressure information;

Air volume determining module 33, for determining fresh air volume according to passenger density;

The fresh air control module 34 is used to control the air-conditioning fan to input fresh air according to the fresh air volume.

Preferably, the above-mentioned rail vehicle air-conditioning control device also includes:

The protection control module is used to monitor the working status of the compressor and air-conditioning fan in the air-conditioning unit; when the working status of the compressor or the air-conditioning fan is abnormal, cut off the running status of the compressor or the air-conditioning fan; obtain the status of the compressor or the air-conditioning fan Abnormal information, and call the corresponding pre-written model to control the compressor or air-conditioning fan according to the abnormal information; wherein, the pre-written model includes different models for controlling equipment cooling, delay output and hiccup output.

The video monitoring module is used to obtain video information of rail vehicle video monitoring equipment; determine passenger density according to the video information.

The carbon dioxide collection module is used to collect the carbon dioxide concentration in the rail vehicle through the sensor.

The mode switching module is used to switch to other corresponding air-conditioning air-supply modes to control the air-conditioning unit according to the current air-conditioning air-supply mode.

The alarm module is used to return the first alarm information if the carbon dioxide concentration collected by the sensor exceeds the preset threshold; if the abnormal working state of the compressor or the air-conditioning fan lasts longer than the preset time, return the second alarm information.

The status display module is used to obtain the status information of each device in the air conditioning unit and send it to the display screen for display.

Since the embodiment of the device part corresponds to the embodiment of the method part, please refer to the description of the embodiment of the method part for the embodiment of the device part, and details will not be repeated here.

In the rail vehicle air conditioning control device provided in this embodiment, the pressure acquisition module reuses the existing air springs of the current rail vehicle to obtain pressure information, and then the density determination module determines the pressure information in each car according to the pressure information returned by the air spring. The number of passengers, and then obtain the passenger density in each car, and use the passenger density to reflect the demand for fresh air input in the future, so that the fresh air volume determined by the air volume determination module is more suitable for the actual needs of the passengers. Compared with the carbon dioxide concentration collected only by the sensor, the device provided by this embodiment is more predictable in the adjustment of the fresh air volume, which fundamentally solves the problem that the untimely adjustment of the fresh air volume has a negative impact on the passenger experience.

Fig. 5 is a structural diagram of a rail vehicle air-conditioning control device provided by another embodiment of the present application. As shown in Fig. 5, a rail vehicle air-conditioning control device includes: a memory 40 for storing computer programs;

The processor 41 is configured to implement the steps of a rail vehicle air-conditioning control method according to the above-mentioned embodiment when executing a computer program.

The rail vehicle air-conditioning control device provided in this embodiment may include, but is not limited to, a smart phone, a tablet computer, a notebook computer or a desktop computer, and the like.

Wherein, the processor 41 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. Processor 41 can adopt at least one hardware form in Digital Signal Processor (Digital Signal Processor, DSP), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), Programmable Logic Array (Programmable LogicArray, PLA) accomplish. The processor 41 may also include a main processor and a coprocessor, the main processor is a processor for processing data in the wake-up state, and is also called a central processing unit (Central Processing Unit, CPU); Low-power processor for processing data in standby state. In some embodiments, the processor 41 may be integrated with a graphics processor (Graphics Processing Unit, GPU), and the GPU is used for rendering and drawing the content that needs to be displayed on the display screen. In some embodiments, the processor 41 may also include an artificial intelligence (Artificial Intelligence, AI) processor, and the AI processor is used to process computing operations related to machine learning.

Memory 40 may include one or more computer-readable storage media, which may be non-transitory. The memory 40 may also include high-speed random access memory, and non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In this embodiment, the memory 40 is at least used to store the following computer program 401, wherein, after the computer program is loaded and executed by the processor 41, it can realize the relevant steps of a rail vehicle air-conditioning control method disclosed in any of the above-mentioned embodiments. In addition, the resources stored in the memory 40 may also include an operating system 402 and data 403, etc., and the storage method may be temporary storage or permanent storage. Wherein, the operating system 402 may include Windows, Unix, Linux and so on. The data 403 may include but not limited to a rail vehicle air conditioning control method and the like.

In some embodiments, a rail vehicle air conditioner control device may further include a display screen 42 , an input/output interface 43 , a communication interface 44 , a power supply 45 and a communication bus 46 .

Those skilled in the art can understand that the structure shown in FIG. 5 does not constitute a limitation to a rail vehicle air-conditioning control device, and may include more or less components than those shown in the illustration.

An air-conditioning control device for a rail vehicle provided in an embodiment of the present application includes a memory and a processor. When the processor executes a program stored in the memory, the following method can be implemented: a method for controlling an air-conditioning of a rail vehicle.

In the rail vehicle air conditioning control device provided in this embodiment, the processor executes the computer program stored in the memory to realize the determination of the number of passengers in each compartment according to the pressure information returned by the existing air spring of the current rail vehicle, Then get the passenger density in each car, and use the passenger density to reflect the demand for fresh air input in a certain period of time in the future, so that the determined fresh air volume can adapt to the changing trend of carbon dioxide concentration for a period of time, and better meet the needs of passengers. According to actual needs, compared with determining the fresh air volume only by the carbon dioxide concentration collected by the sensor, it fundamentally solves the problem that the untimely adjustment of the fresh air volume has a negative impact on the passenger experience.

Finally, the present application also provides an embodiment corresponding to a computer-readable storage medium. A computer program is stored on a computer-readable storage medium, and when the computer program is executed by a processor, the steps described in the foregoing method embodiments are implemented.

It can be understood that if the methods in the above embodiments are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or part of the contribution to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , executing all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other various media that can store program codes. .

A computer-readable storage medium provided in this embodiment, when the computer program stored therein is executed, can realize the determination of the number of passengers in each compartment according to the pressure information returned by the existing air spring of the current rail vehicle, and then Obtain the passenger density in each car, and use the passenger density to reflect the demand for fresh air input in the future, so that the determined fresh air volume can adapt to the changing trend of carbon dioxide concentration for a period of time, and better meet the actual needs of the passengers. Compared with determining the fresh air volume only by the carbon dioxide concentration collected by the sensor, it fundamentally solves the problem that the untimely adjustment of the fresh air volume has a negative impact on the passenger experience.

A rail vehicle air conditioning control method, device and medium thereof provided by the present application have been introduced in detail above. Each embodiment in the description is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and for the related information, please refer to the description of the method part. It should be pointed out that those skilled in the art can make some improvements and modifications to the application without departing from the principles of the application, and these improvements and modifications also fall within the protection scope of the claims of the application.

It should also be noted that in this specification, relative terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations There is no such actual relationship or order between the operations. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

Claims (10)

1. A rail vehicle air conditioner control method is characterized by comprising the following steps:

acquiring pressure information of an air spring of the railway vehicle;

determining passenger density from the pressure information;

determining the fresh air volume according to the passenger density;

and controlling the air conditioner fan to input fresh air according to the fresh air quantity.

2. The rail vehicle air conditioning control method according to claim 1, further comprising:

monitoring the working states of a compressor and an air conditioning fan in an air conditioning unit;

when the working state of the compressor or the air-conditioning fan is abnormal, the running state of the compressor or the air-conditioning fan is cut off;

acquiring abnormal information of the compressor or the air conditioner fan, and calling a corresponding pre-written model to control the compressor or the air conditioner fan according to the abnormal information; wherein the pre-write model comprises different models for controlling device cooling, latency outputs, and hiccup outputs.

3. The rail vehicle air conditioning control method according to claim 2, characterized by further comprising:

acquiring video information of a rail vehicle video monitoring device;

determining the passenger density according to the video information;

correspondingly, the step of determining the fresh air volume according to the passenger density comprises the following steps:

determining the fresh air volume based on the passenger density determined from the pressure information and the passenger density determined from the video information.

4. The rail vehicle air conditioning control method according to claim 3, characterized by further comprising:

collecting the concentration of carbon dioxide in the rail vehicle through a sensor;

accordingly, determining the fresh air volume based on the passenger density determined from the pressure information and the passenger density determined from the video information comprises:

determining the fresh air volume based on the passenger density determined from the pressure information, the passenger density determined from the video information, and the carbon dioxide concentration.

5. The rail vehicle air conditioning control method according to claim 2, further comprising, when an abnormality occurs in an operating state of the compressor or the air conditioning fan:

and switching to the corresponding other air-conditioning air supply modes to control the air-conditioning unit according to the current air-conditioning air supply mode.

6. The rail vehicle air conditioning control method according to claim 4, further comprising:

if the concentration of the carbon dioxide acquired by the sensor exceeds a preset threshold value, returning first alarm information;

and if the duration time of the abnormal working state of the compressor or the air conditioner fan exceeds the preset time, returning second alarm information.

7. The rail vehicle air conditioning control method according to any one of claims 1 to 6, characterized by further comprising:

and acquiring the state information of each device in the air conditioning unit, and sending the state information to a display screen for displaying.

8. A rail vehicle air conditioning control apparatus, comprising:

the pressure acquisition module is used for acquiring pressure information of an air spring of the railway vehicle;

a density determination module for determining a passenger density based on the pressure information;

the air volume determining module is used for determining fresh air volume according to the passenger density;

and the fresh air control module is used for controlling the air conditioner fan to input fresh air according to the fresh air quantity.

9. A rail vehicle air conditioning control apparatus, comprising:

a memory for storing a computer program;

a processor for implementing the steps of the rail vehicle air conditioning control method according to any one of claims 1 to 7 when executing said computer program.

10. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of the rail vehicle air conditioning control method according to one of claims 1 to 7.

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