Method and device for determining the amount of remaining sand in a train, rail vehicle and medium thereof

Abstract

The present application discloses a method, device, rail vehicle and medium for determining the amount of sand remaining in a train, which relates to the field of rail transportation technology and is used to determine the amount of sand remaining in a train. In response to the problems currently caused by using a glass scale or a sand level sensor to determine the amount of sand remaining, a method for determining the amount of sand remaining in a train is provided. By obtaining the total time the train is in different driving states and the corresponding sand spreading rate, the total sand spreading consumption of the train is determined, and then the remaining sand at this time can be determined based on the previous remaining sand. The entire remaining sand determination process does not require additional hardware to implement, and the observation window glass scale will not be worn due to the long-term operation of the train, thereby affecting the accuracy of the remaining sand determination; it will not bring additional costs, and there is no need to modify the train, and there is no need to repair the sand spreading device due to the failure of the sand level sensor, which is conducive to actual project implementation.

Description

Technical Field

[0001] The present application relates to the field of rail transportation technology, and in particular to a method and device for determining the amount of remaining sand in a train, a rail vehicle, and a medium thereof. Background Art

[0002] With the development of rail transit, trains have become an essential means of transportation. Sanding is applied to trains during operation to effectively improve the working environment at the wheel-rail interface, increase adhesion, and enhance operational quality. In particularly inclement weather such as rain, snow, and frost, rails become slippery, making trains prone to idling or sliding while traveling on them, posing a risk. Sanding can effectively mitigate these issues. Therefore, keeping track of the sand level in the train's sand box and promptly adding sand when insufficient can effectively ensure safe and stable train operation.

[0003] At present, there are two main ways to determine the remaining sand amount in the sand spreading device: one is to check the remaining sand amount through the glass scale of the sand box. When the vehicle returns to the depot, the maintenance personnel will pay attention to check the remaining sand amount of each train. The sand box is provided with an observation window, and the observation window is also provided with a scale. The maintenance personnel can intuitively determine the remaining sand amount in the sand box through the scale; the second is to measure the remaining sand amount by installing a sand level sensor. A sand level sensor is set inside the sand box, which can detect the sand level in the sand box. After being connected to the display device in the vehicle driver's cab or mechanic's room, it can prompt the maintenance personnel when the sand level is insufficient.

[0004] However, the sand box glass scale method is prone to problems such as dust accumulation, wear and tear on the observation window and unclear scale as the train's running time increases, affecting the ability to view the remaining sand. The sand level sensor method requires adding a sand level sensor to each vehicle equipped with a sand spreading device, which adds a lot of extra costs. In addition, since the sand box is located under the vehicle, it is far away from the vehicle driver's cab or mechanic's room, requiring a lot of complex wiring and modification. In addition, the complex environment under the train, with strong electromagnetic interference and vibration, places high demands on the reliability of the sensor. Once the sensor fails, the sand spreading device needs to be opened for maintenance, which brings unnecessary trouble to the maintenance work.

[0005] Therefore, technicians in this field are in urgent need of a method for determining the remaining sand amount on a train to solve the above-mentioned problems caused by using a glass scale or a sand level sensor to determine the remaining sand amount. Summary of the Invention

[0006] The purpose of this application is to provide a method, device and medium for determining the remaining sand amount on a train, so as to solve the above-mentioned problems caused by using a glass scale or a sand level sensor to determine the remaining sand amount.

[0007] In order to solve the above technical problems, the present application provides a method for determining the amount of remaining sand in a train, comprising:

[0008] Obtain the total time the train is in a low-speed running state, the total time the train is in a high-speed running state, and obtain the low-speed sand spreading rate and the high-speed sand spreading rate; wherein, when the current speed of the train is less than the preset speed threshold, it is in a low-speed running state, and when the current speed of the train is greater than or equal to the speed threshold, it is in a high-speed running state; the low-speed sand spreading rate is the sand spreading rate when the train is in a low-speed running state, and the high-speed sand spreading rate is the sand spreading rate when the train is in a high-speed running state;

[0009] Determine the total sand spreading consumption based on the total low-speed time, the total high-speed time, the low-speed sand spreading rate, and the high-speed sand spreading rate;

[0010] The remaining amount of sand is determined based on the total amount of sand loaded on the train and the total sand consumption.

[0011] Preferably, obtaining the total time during which the train is in a low-speed running state and the total time during which the train is in a high-speed running state comprises:

[0012] Get the current speed of the train;

[0013] Determine whether the train is in a low-speed running state or a high-speed running state according to the relationship between the current train speed and the train speed threshold;

[0014] The total time the train is running at low speed is taken as the total low-speed time; the total time the train is running at high speed is taken as the total high-speed time.

[0015] Preferably, it further comprises: a plurality of different high-speed vehicle speed thresholds and a plurality of different low-speed vehicle speed thresholds;

[0016] The high-speed threshold and the low-speed threshold are used to further classify the current running status of the train;

[0017] Correspondingly, the total low-speed duration includes the same number of duration values as the low-speed threshold value;

[0018] The total high-speed time includes the same number of time values as the high-speed speed threshold;

[0019] The low-speed sand spreading rate includes the same number of rate values as the low-speed vehicle speed threshold;

[0020] The high-speed sand spreading rate includes the same number of rate values as the high-speed vehicle speed threshold.

[0021] Preferably, obtaining the low-speed sand spreading rate and the high-speed sand spreading rate includes:

[0022] Obtaining a preset basic low-speed sand spreading rate and a basic high-speed sand spreading rate, and obtaining any one or more of weather factors, line condition information, and actual maintenance conditions as influencing factors;

[0023] The low-speed sand spreading rate is determined according to the basic low-speed sand spreading rate and the influencing factor, and the high-speed sand spreading rate is determined according to the basic high-speed sand spreading rate and the influencing factor.

[0024] Preferably, it also includes:

[0025] Determine the actual sand consumption each time sand is replenished;

[0026] If the total sand spreading consumption is higher than the actual sand spreading consumption, the low-speed sand spreading rate and the high-speed sand spreading rate are reduced;

[0027] If the total sanding consumption is lower than the actual sanding consumption, increase the low-speed sanding rate and the high-speed sanding rate.

[0028] Preferably, reducing or increasing the low-speed sand spreading rate and the high-speed sand spreading rate comprises:

[0029] The adjustment ratio is determined based on the ratio of the total low-speed time to the total high-speed time;

[0030] According to the adjustment ratio, reduce or increase the low-speed sanding rate and the high-speed sanding rate.

[0031] Preferably, it also includes:

[0032] When the remaining sand volume falls below the preset maintenance threshold, a prompt message will be issued.

[0033] In order to solve the above technical problems, the present application also provides a device for determining the amount of remaining sand in a train, comprising:

[0034] an acquisition module, configured to acquire the total time the train is in a low-speed running state, the total time the train is in a high-speed running state, and the low-speed sand spreading rate and the high-speed sand spreading rate; wherein, the train is in a low-speed running state when its current speed is less than a preset speed threshold, and is in a high-speed running state when its current speed is greater than or equal to the speed threshold; the low-speed sand spreading rate is the sand spreading rate when the train is in a low-speed running state, and the high-speed sand spreading rate is the sand spreading rate when the train is in a high-speed running state;

[0035] a consumption determination module, for determining a total sand spreading consumption according to a total low-speed time, a total high-speed time, a low-speed sand spreading rate, and a high-speed sand spreading rate;

[0036] The remaining sand quantity determination module is used to determine the remaining sand quantity based on the total sand quantity loaded on the train and the total sand spreading consumption.

[0037] Preferably, it also includes:

[0038] The sand spreading rate optimization module is used to determine the actual sand spreading consumption each time sand is replenished; if the total sand spreading consumption is higher than the actual sand spreading consumption, the low-speed sand spreading rate and the high-speed sand spreading rate are reduced; if the total sand spreading consumption is lower than the actual sand spreading consumption, the low-speed sand spreading rate and the high-speed sand spreading rate are increased.

[0039] The prompt module is used to issue a prompt message when the remaining sand amount is lower than the preset maintenance threshold.

[0040] To solve the above technical problems, the present application further provides a rail vehicle, comprising:

[0041] Memory for storing computer programs;

[0042] The processor is used to implement the steps of the method for determining the remaining sand amount of the train as described above when executing the computer program.

[0043] 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. When the computer program is executed by a processor, the steps of the method for determining the remaining sand amount of a train as described above are implemented.

[0044] The present application provides a method for determining the remaining sand amount on a train. The method obtains the total time the train travels at low speed as the low-speed total time and the total time the train travels at high speed as the high-speed total time. Since the sand spreading rate of the train varies in different travel states, the total sand spreading consumption of the train is determined based on the low-speed total time, the high-speed total time, the low-speed sand spreading rate, and the high-speed sand spreading rate. The remaining sand amount at this time can then be determined based on the previously remaining sand amount. The entire remaining sand amount determination process does not require additional hardware to implement, and will not affect the accuracy of the remaining sand amount determination due to wear of the observation window glass scale caused by the long-term operation of the train. It will not incur additional costs, and there is no need to modify the train. Moreover, there will be no need to overhaul the sand spreading device due to a failure of the sand level sensor, which is conducive to actual project implementation.

[0045] The device for determining the amount of remaining sand on a train, the rail vehicle, and the computer-readable storage medium provided in this application correspond to the above method and have the same effect as above. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0047] Figure 1 A flow chart of a method for determining the amount of remaining sand in a train provided by the present invention;

[0048] Figure 2 A flow chart of another method for determining the amount of remaining sand in a train provided by the present invention;

[0049] Figure 3 A structural diagram of a device for determining the amount of remaining sand on a train provided by the present invention;

[0050] Figure 4 This is a structural diagram of a rail vehicle provided by the present invention. DETAILED DESCRIPTION

[0051] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0052] The core of this application is to provide a method and device for determining the amount of remaining sand on a train, a rail vehicle and a medium thereof.

[0053] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0054] In current rail transit, the impact of severe weather such as rain, snow, and frost on the adhesion coefficient of the wheel-rail contact surface poses risks to train operation. Therefore, each carriage of the train is equipped with a sand-spreading device. The sand stored in the sand box is discharged onto the wheel-rail contact surface at a certain rate (the sand-spreading rate is related to the current train speed, weather conditions, road section, etc.) to address the adverse effects of the above-mentioned severe weather.

[0055] Therefore, the sand box in each train car needs to know the remaining sand amount in real time so that it can be replenished in time when the sand is insufficient. Currently, the method of determining the remaining sand amount in the sand box is mainly to use the glass ruler installed at the sand box to visually know the remaining sand amount, and the sand level sensor to obtain the sand level in the sand box, and then calculate the remaining sand amount.

[0056] However, since the contents of the sand box are sand and the working environment of the train is usually relatively harsh, the glass observation window on the sand box is prone to dust accumulation and wear as the train runs for a long time, which makes it difficult to accurately judge the amount of remaining sand. The sand level sensor needs to be directly or indirectly connected to the processing unit that controls the train in order to transmit the collected signal representing the sand level in the sand box to the processing unit. This method requires the arrangement of wiring between the sand level sensor and the processing unit, which requires additional modification to the train. Each car requires at least one sand level sensor, so the more cars there are on the train, the more complex the wiring required. In addition, due to the relatively harsh working environment and the complex electromagnetic and vibration environment, the sand level sensor is prone to damage. At this time, the sand spreading device needs to be opened to replace or repair the sand level sensor, which adds time and cost to train maintenance.

[0057] Therefore, in response to the above problems, Figure 1 As shown, the present application provides a method for determining the amount of remaining sand in a train, comprising:

[0058] S11: Obtain the total time the train is in a low-speed running state, the total time the train is in a high-speed running state, and obtain the low-speed sand spreading rate and the high-speed sand spreading rate.

[0059] Among them, whether the train is in a high-speed driving state or a low-speed driving state is mainly determined by the relationship between the current speed and the preset speed threshold. Specifically: when the current speed of the train is less than the preset speed threshold, it is in a low-speed driving state; when the current speed of the train is greater than or equal to the speed threshold, it is in a high-speed driving state.

[0060] In addition, the low-speed sand-spreading rate mentioned in this application is the sand-spreading rate of the sand-spreading device when the train is traveling at a low speed, and the high-speed sand-spreading rate is the sand-spreading rate of the sand-spreading device when the train is traveling at a high speed.

[0061] Regarding the determination of the total low-speed duration and the total high-speed duration, this embodiment provides a preferred implementation scheme, including:

[0062] Get the current speed of the train;

[0063] Determine whether the train is in a low-speed running state or a high-speed running state according to the relationship between the current train speed and the train speed threshold;

[0064] The total time the train is running at low speed is taken as the total low-speed time; the total time the train is running at high speed is taken as the total high-speed time.

[0065] The preferred solution provided by the above embodiment obtains the duration of each sub-period and finally accumulates the total duration. For example, during a day's travel, a train will switch between a low-speed driving state and a high-speed driving state. Correspondingly, there are n low-speed driving sub-periods (t 低1 , t 低2 , t 低3…… t 低n ) and high-speed mode sub-period (t 高1 , t 高2 , t 高3 ……t 高n ), the total low-speed time (T 低 ) and total high-speed time (T 高 ):

[0066] T 低 =t 低1 +t 低2 +t 低3 +…+t 低n

[0067] T 高 =t 高1 +t 高2 +t 高3 +…+t 高n

[0068] Similarly, the time scale for calculating the total low-speed duration and the total high-speed duration depends on the need for judging the amount of remaining sand in actual applications. For example, in the actual operation of the train, a rough assessment of the overall situation of the train is made in units of days, and accordingly, the amount of remaining sand also needs to be known. Based on the above situation, the total low-speed duration and the total high-speed duration should be calculated on a time scale of one day, that is, the sub-periods of the train in the low-speed and high-speed driving states in a day are obtained, and the corresponding total duration is accumulated. Therefore, the frequency of determining the amount of remaining sand depends on actual needs.

[0069] In addition, in addition to the above-mentioned method of calculating the remaining sand volume by determining the duration as a period, the remaining sand volume can also be triggered by a request for determining the remaining sand volume. Among them, the request for determining the remaining sand volume is issued by relevant personnel through a hardware device that can implement this method. For example, the method for determining the remaining sand volume of a train provided in this application is implemented by a ground test bench. Based on this application scenario, when the operator of the ground test bench inputs a request for obtaining the remaining sand volume, the ground test bench obtains the total low-speed time and the total high-speed time of the train since the last update of the remaining sand volume, thereby calculating the sand consumption of the train since the last update of the remaining sand volume, and then determining the current remaining sand volume based on the remaining sand volume and the sand consumption of the last update. Among them, the remaining sand volume of the last update can be the remaining sand volume obtained by the above-mentioned method for determining the remaining sand volume of the train, or it can be the remaining sand volume manually updated and input after the ground maintenance personnel replenish the sand volume or other operations. This application does not impose any restrictions on this.

[0070] S12: Determine the total sand spreading consumption according to the total low-speed time, the total high-speed time, the low-speed sand spreading rate, and the high-speed sand spreading rate.

[0071] After obtaining the total low-speed duration and the total high-speed duration according to step S11, the total sand spreading consumption can be calculated according to the low-speed sand spreading rate and the high-speed sand spreading rate using the following formula:

[0072] S 单日 =V 低 *T 低 +V 高 *T 高

[0073] It should be noted that the low-speed and high-speed sanding rates can be preset or dynamically determined based on the environmental factors currently affecting the train. These factors include weather (sanding rates vary depending on rain, snow, and frost, and different weather levels under the same weather conditions also require different sanding rates), line conditions (sanding rates vary depending on the section of track the train is traveling on), and actual maintenance conditions (the actual train conditions also affect the sanding rate).

[0074] In addition, when the sand spreading rate is dynamically determined, the total low-speed duration and the total high-speed duration can be further subdivided based on the aforementioned environmental factors. Taking weather as an example, the total high-speed duration can be subdivided into three sub-durations: rain-high-speed duration, snow-high-speed duration, and frost-high-speed duration. Each sub-duration can be further divided into several different sub-durations based on the weather level.

[0075] Accordingly, the above formula for determining the total sand spreading amount should also be adaptively changed, and the product of each total time and its corresponding sand spreading rate is accumulated to obtain the final total sand spreading amount.

[0076] It is easy to understand that the finer the division of the total time and the corresponding sand spreading rate, the more accurate the total sand spreading amount determined accordingly will be, but the complexity of obtaining it will also be higher. In actual application, it can be implemented according to specific needs.

[0077] S13: Determine the remaining amount of sand based on the total amount of sand loaded in the train and the total sand consumption.

[0078] After determining the total sand consumption, the amount of sand spread by the train during the remaining sand determination process can be known. Furthermore, the remaining sand amount can be easily determined based on the total sand loaded on the train.

[0079] It should be noted that the total amount of sand loaded on the train can be the sand amount information in the sand box entered by the maintenance personnel when replenishing the sand, or it can be equal to the capacity of the sand box by default (that is, the sand box is filled up by default for each maintenance), or it can be the remaining sand amount determined according to the above method (that is, when the train determines the remaining sand amount multiple times according to the above method during a maintenance interval). This embodiment does not impose any restrictions on this.

[0080] In addition, it should be noted that the method for determining the remaining sand amount on a train provided in this application is to obtain the total time the sand spreading device is operating at different sand spreading rates, and then determine the total sand spreading amount based on the corresponding sand spreading rate and total time. Therefore, the application scenario of this method should be the scenario where the train is sand spreading. Furthermore, before the method is performed, it should first be determined whether the train is sand spreading. If sand spreading is not being performed, there is no need to perform the subsequent steps of determining the remaining sand amount.

[0081] The present application provides a method for determining the remaining sand amount of a train. Since the sand spreading rate is mainly related to the train speed, the total time of the train at different speeds (the total time at low speed and the total time at high speed) is obtained, and the total sand spreading amount of the train is obtained according to the corresponding sand spreading rate (the sand spreading rate at low speed and the sand spreading rate at high speed). Then, the remaining sand amount can be obtained according to the total sand amount and the total sand spreading amount of the train. Maintenance personnel can know the remaining sand amount of the train in a timely and accurate manner, so that when the remaining sand amount of the train is insufficient, sand can be replenished in time to avoid the risk of the train running due to insufficient sand. This method does not require additional hardware devices, thereby avoiding the various problems caused by the current use of observation window glass scales and sand level sensors, and further ensuring the smooth and safe operation of the train.

[0082] In the above embodiment, it is explained that the total high-speed time and the total low-speed time can be further subdivided according to the environmental factors of the train, so that the method provided by this application can more accurately determine the amount of remaining sand. Therefore, based on the same purpose, this embodiment further subdivides the total high-speed time and the total low-speed time from another perspective, and the above method also includes:

[0083] A plurality of different high-speed thresholds and a plurality of different low-speed thresholds; the high-speed threshold and the low-speed threshold are used to further divide the current driving state of the train.

[0084] Correspondingly, the total low-speed time includes the same number of time values as the low-speed vehicle speed threshold; the total high-speed time includes the same number of time values as the high-speed vehicle speed threshold; the low-speed sand-spreading rate includes the same number of rate values as the low-speed vehicle speed threshold; and the high-speed sand-spreading rate includes the same number of rate values as the high-speed vehicle speed threshold.

[0085] It should be noted that the setting of different speed thresholds can be set at the same interval of train speed, that is, the difference between different speed thresholds is the same. The advantage is that the speed segments distinguished by the speed thresholds determined by this method are more regular, and thus it is more convenient and the error is smaller when accumulating the total duration of each speed segment.

[0086] Alternatively, the sand spreading rate can be set based on a specific rule. For example, the sand spreading rates corresponding to different speed thresholds are set to be the same. This method of setting the speed threshold based on the sand spreading rate makes the sand spreading rates corresponding to each speed range more regular, avoiding the impact on the accuracy of sand spreading rate determination caused by a large difference between the variation pattern of sand spreading efficiency and the variation pattern of speed.

[0087] This embodiment does not limit the specific setting method of the speed threshold. In actual application, relevant personnel should select an appropriate implementation method to set each speed threshold according to actual needs.

[0088] This embodiment further divides the train's driving status and corresponds to corresponding sand-spreading rates, so that the total sand-spreading consumption obtained based on the total time the train is in different driving status and the corresponding sand-spreading rates is more accurate. Furthermore, the remaining sand amount determined based on the total sand-spreading consumption and the total amount of sand loaded on the train is also more accurate, better meeting the needs of smooth operation of the train.

[0089] As described in the above embodiment, in the actual operation of the train, in addition to the train speed, there are other factors such as weather factors, line condition information, and actual maintenance conditions that affect the train sand spreading rate. Therefore, in order to further improve the accuracy of the method for determining the remaining sand amount of the train provided by this application, this embodiment provides a preferred implementation scheme, which obtains the low-speed sand spreading rate and the high-speed sand spreading rate including:

[0090] Obtaining a preset basic low-speed sand spreading rate and a basic high-speed sand spreading rate, and obtaining any one or more of weather factors, line condition information, and actual maintenance conditions as influencing factors;

[0091] The low-speed sand spreading rate is determined according to the basic low-speed sand spreading rate and the influencing factor, and the high-speed sand spreading rate is determined according to the basic high-speed sand spreading rate and the influencing factor.

[0092] Among them, the preset basic low-speed sand-spreading rate and basic high-speed sand-spreading rate are sand-spreading rates determined according to the speed of the train, and can be determined based on historical data on the correspondence between speed and sand-spreading rate during train operation.

[0093] In a preferred embodiment, the above-mentioned influencing factors are selected as weather factors, line condition information, and actual maintenance conditions. Based on this, the low-speed sand spreading rate and the high-speed sand spreading rate can be determined according to the following formula:

[0094] V=V 基础 *(ω 天气 +ω 环境 +ε 检修 )

[0095] Wherein, V represents the sand spreading rate (low speed sand spreading rate or high speed sand spreading rate), V 基础 represents the basic sand spreading rate (basic low-speed sand spreading rate or sand spreading rate (low-speed sand spreading rate or high-speed sand spreading rate) high-speed sand spreading rate), ω 天气 represents the weather factor, ω 环境 represents the line condition information impact factor, ε 检修 Indicates the factors affecting the actual maintenance situation.

[0096] It should be noted that the implementation scheme provided in this embodiment, which also includes factors affecting the sand spreading rate, is based on the train operating state being categorized as either a low-speed state or a high-speed state for ease of explanation. However, it is readily understood that the preferred solution provided in this embodiment is also applicable to the sand spreading rates corresponding to different train operating states. The specific implementation scheme is similar to that in the above example and will not be further elaborated here.

[0097] A preferred solution provided by this embodiment introduces any one or more of weather factors, line condition information, and actual maintenance conditions as influencing factors, thereby determining a sand spreading rate that is more in line with actual conditions, making the obtained sand spreading rate more accurate, and thus, the determined remaining sand amount on the train is also more accurate, better meeting the maintenance personnel's need to know the remaining sand amount on the train.

[0098] Similarly, in order to further improve the accuracy of the method for determining the amount of remaining sand in a train provided by this application, this embodiment also provides a preferred implementation scheme, such as Figure 2 As shown, the method further includes:

[0099] S21: Determine the actual sand consumption each time sand is replenished.

[0100] Each time a train is overhauled, the actual remaining sand amount of the train can be determined to obtain the actual sand consumption, so as to optimize the remaining sand amount determined by the method provided in this application.

[0101] However, this embodiment does not limit the specific method for determining the actual sand consumption. The maintenance personnel should select an appropriate detection method according to the actual situation to determine the actual sand consumption.

[0102] S22: Determine whether the total sand spreading consumption is higher than the actual sand spreading consumption. If so, go to step S23; if not, go to step S24.

[0103] S23: Reduce the low-speed sand spreading rate and the high-speed sand spreading rate.

[0104] S24: Increase the low-speed sanding rate and high-speed sanding rate.

[0105] It can be seen from the above embodiments that this method determines the total sand-spreading consumption based on the total duration of each driving state and the corresponding sand-spreading rate. Since in actual applications, the total duration of each driving state is mostly determined by the train control device based on the current speed of the train, the probability of error is small and the error is low, which can be ignored compared with the error in determining the sand-spreading rate.

[0106] Therefore, when the total sand spreading consumption is higher than the actual sand spreading consumption, the sand spreading rate of each driving state should be reduced, and when the total sand spreading consumption is lower than the actual sand spreading consumption, the sand spreading rate of each driving state should be increased to compensate for the error.

[0107] Furthermore, regarding the specific adjustment method of the sand spreading rate in each driving state involved in step S23 and step S24, this embodiment also provides a preferred implementation scheme, including:

[0108] The adjustment ratio is determined based on the ratio of the total low-speed time to the total high-speed time;

[0109] According to the adjustment ratio, reduce or increase the low-speed sanding rate and the high-speed sanding rate.

[0110] That is, when adjusting the sand spreading rate of each driving state, the total duration of each driving state is used as a basis to determine the ratio between the total durations of each driving state, and the sand spreading rate of each driving state is adjusted according to the ratio.

[0111] It is easy to understand that this embodiment takes the train's running state as divided into a high-speed running state and a low-speed running state as an example to provide a preferred implementation scheme for optimizing the sand spreading rate. However, for the above embodiment, when the train's running state is further subdivided, the preferred solution provided in this embodiment is also applicable. Correspondingly, it should be:

[0112] The adjustment ratio is determined according to the total duration of each train driving state, and the sand spreading rate of the corresponding driving state is reduced or increased according to the adjustment ratio.

[0113] This embodiment improves the accuracy of the method for determining the remaining sand amount on a train provided by this application by obtaining the train's actual sand consumption during maintenance and then optimizing the sand spreading rate based on the actual sand spreading consumption. After multiple iterations of optimization, the accuracy of the remaining sand amount determined by this method is further improved, further ensuring smooth train operation. Furthermore, when optimizing and adjusting the sand spreading rate, this embodiment determines the ratio between the total durations of each driving state and uses this ratio as the adjustment ratio to adjust the sand spreading rate for each driving state, achieving a better optimization effect and further improving the accuracy of the remaining sand amount determined by this method.

[0114] After determining the current remaining sand amount of the train through the above embodiment, this embodiment further provides a preferred implementation scheme, and the method further includes:

[0115] When the remaining sand volume falls below the preset maintenance threshold, a prompt message will be issued.

[0116] In actual applications, there is usually a maintenance threshold for the remaining sand amount. When the remaining sand amount of the train is lower than the maintenance threshold, the train needs to be replenished with sand. Therefore, this embodiment compares the size relationship between the remaining sand amount and the maintenance threshold determined by the above method. When the remaining sand amount is lower than the preset maintenance threshold, a prompt message is sent to promptly remind maintenance personnel to perform maintenance, sand replenishment and other operations on the train to avoid affecting the normal operation of the train.

[0117] In the above embodiment, a method for determining the amount of sand remaining in a train is described in detail. This application also provides an embodiment of a device for determining the amount of sand remaining in a train. 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.

[0118] Based on the perspective of functional modules, this embodiment provides a device for determining the amount of remaining sand in a train, including:

[0119] The acquisition module 31 is used to obtain the total time the train is in a low-speed running state, the total time the train is in a high-speed running state, and obtain the low-speed sand spreading rate and the high-speed sand spreading rate; wherein, when the current speed of the train is less than a preset speed threshold, it is in a low-speed running state, and when the current speed of the train is greater than or equal to the speed threshold, it is in a high-speed running state; the low-speed sand spreading rate is the sand spreading rate of the train in the low-speed running state, and the high-speed sand spreading rate is the sand spreading rate of the train in the high-speed running state;

[0120] a consumption determination module 32 for determining a total sand spreading consumption based on the total low-speed time, the total high-speed time, the low-speed sand spreading rate, and the high-speed sand spreading rate;

[0121] The remaining sand amount determination module 33 is used to determine the remaining sand amount according to the total amount of sand loaded on the train and the total sand consumption.

[0122] Preferably, it also includes:

[0123] The sand spreading rate optimization module is used to determine the actual sand spreading consumption each time sand is replenished; if the total sand spreading consumption is higher than the actual sand spreading consumption, the low-speed sand spreading rate and the high-speed sand spreading rate are reduced; if the total sand spreading consumption is lower than the actual sand spreading consumption, the low-speed sand spreading rate and the high-speed sand spreading rate are increased.

[0124] The prompt module is used to issue a prompt message when the remaining sand amount is lower than the preset maintenance threshold.

[0125] Since the embodiments of the apparatus part correspond to the embodiments of the method part, please refer to the description of the embodiments of the method part for the embodiments of the apparatus part, and will not be repeated here.

[0126] This embodiment provides a device for determining the remaining sand amount on a train. The acquisition module obtains the total time the train is in a low-speed running state and the corresponding sand-spreading rate, as well as the total time the train is in a high-speed running state and the corresponding sand-spreading rate, and then obtains the total sand-spreading amount of the train through the consumption determination module. Finally, the remaining sand amount determination module can obtain the remaining sand amount based on the total sand amount installed in the train and the total sand-spreading amount, providing a solution for determining the remaining sand amount for the train without additional hardware devices, thereby avoiding the various problems caused by the current use of observation window glass scales and sand level sensors, and further ensuring the smooth and safe operation of the train.

[0127] Figure 4 A structural diagram of a rail vehicle provided in another embodiment of the present application is shown in FIG. Figure 4 As shown, a rail vehicle includes: a memory 40 for storing a computer program;

[0128] The processor 41 is used to implement the steps of a method for determining the remaining sand amount of a train as described in the above embodiment when executing a computer program.

[0129] Among them, the processor 41 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 41 can be implemented in at least one hardware form of a digital signal processor (DSP), a field programmable gate array (FPGA), and a programmable logic array (PLA). The processor 41 may also include a main processor and a coprocessor. The main processor is a processor for processing data in the awake state, also known as a central processing unit (CPU); the coprocessor is a low-power processor for processing data in the standby state. In some embodiments, the processor 41 may be integrated with a graphics processing unit (GPU), which is responsible for rendering and drawing the content to be displayed on the display screen. In some embodiments, the processor 41 may also include an artificial intelligence (AI) processor, which is used to process computing operations related to machine learning.

[0130] The memory 40 may include one or more computer-readable storage media, which may be non-transitory. The memory 40 may also include a high-speed random access memory, and a non-volatile memory, such as one or more 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 implement the relevant steps of a method for determining the remaining sand amount of a train disclosed in any of the aforementioned 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. Among them, the operating system 402 may include Windows, Unix, Linux, etc. The data 403 may include but is not limited to a method for determining the remaining sand amount of a train, etc.

[0131] In some embodiments, a rail vehicle 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 .

[0132] Those skilled in the art will understand that Figure 4 The structure shown in the figure does not constitute a limitation of a rail vehicle and may include more or fewer components than shown.

[0133] A rail vehicle provided by an embodiment of the present application includes a memory and a processor. When the processor executes a program stored in the memory, it can implement the following method: a method for determining the amount of remaining sand in a train.

[0134] This embodiment provides a rail vehicle, which uses a processor to execute a computer program stored in a memory, thereby obtaining the total time the train is in a low-speed driving state and the corresponding sand-spreading rate, as well as the total time the train is in a high-speed driving state and the corresponding sand-spreading rate, and then determining the total sand-spreading amount of the train based on this. Finally, the remaining sand amount is obtained based on the total sand amount loaded on the train and the total sand-spreading amount. This provides a solution for determining the remaining sand amount for the train without the need for additional hardware devices, thereby avoiding the various problems currently caused by the use of observation window glass scales or sand level sensors, and further ensuring the smooth and safe operation of the train.

[0135] Finally, the present application also provides an embodiment corresponding to a computer-readable storage medium. The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps described in the above method embodiment.

[0136] It is understandable that if the method in the above embodiment is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and executes all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0137] This embodiment provides a computer-readable storage medium. When the computer program stored therein is executed, the computer program can determine the total sand spreading amount of the train by obtaining the total time the train is traveling at low speed and the corresponding sand spreading rate, as well as the total time the train is traveling at high speed and the corresponding sand spreading rate. The remaining sand amount can then be determined based on the total sand loaded on the train and the total sand spreading amount. This eliminates the need for additional hardware devices, avoids the various problems currently associated with the use of observation window glass scales and sand level sensors, and further ensures accurate determination of the remaining sand amount on the train.

[0138] The above is a detailed introduction to a method, device and medium for determining the amount of remaining sand on a train provided by the present application. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of this application, several improvements and modifications can be made to this application, and these improvements and modifications also fall within the scope of protection of the claims of this application.

[0139] It should also be noted that, in this specification, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of 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 the element.

Claims

1. A method for determining the amount of remaining sand in a train, characterized in that: include: Obtain the total time the train is in a low-speed driving state, the total time the train is in a high-speed driving state, and obtain the low-speed sand spreading rate and the high-speed sand spreading rate; wherein, when the current speed of the train is less than a preset speed threshold, it is in the low-speed driving state, and when the current speed of the train is greater than or equal to the speed threshold, it is in the high-speed driving state; the low-speed sand spreading rate is the sand spreading rate of the train in the low-speed driving state, and the high-speed sand spreading rate is the sand spreading rate of the train in the high-speed driving state; Determining a total sand spreading consumption according to the total low-speed time, the total high-speed time, the low-speed sand spreading rate, and the high-speed sand spreading rate; determining the remaining amount of sand according to the total amount of sand loaded in the train and the total sand spreading consumption; Also includes: a plurality of different high-speed thresholds and a plurality of different low-speed thresholds; wherein the intervals between the sand spreading rates corresponding to the different speed thresholds are the same; The high-speed threshold and the low-speed threshold are used to further divide the current driving state of the train; Correspondingly, the total low-speed duration includes the same number of duration values as the low-speed vehicle speed threshold; The total high-speed time includes the same number of time values as the high-speed vehicle speed threshold; The low-speed sand spreading rate includes the same number of rate values as the low-speed vehicle speed threshold; The high-speed sand spreading rate includes the same number of rate values as the high-speed vehicle speed threshold; Determine the actual sand consumption each time sand is replenished; Determining an adjustment ratio according to a ratio of the total low-speed time to the total high-speed time; If the total sand spreading consumption is higher than the actual sand spreading consumption, reducing the low-speed sand spreading rate and the high-speed sand spreading rate according to the adjustment ratio; If the total sand spreading consumption is lower than the actual sand spreading consumption, the low-speed sand spreading rate and the high-speed sand spreading rate are increased according to the adjustment ratio.

2. The method for determining the amount of remaining sand in a train according to claim 1, wherein: The method of obtaining the total time duration of the train in the low-speed running state and the total time duration of the train in the high-speed running state includes: Obtaining the current speed of the train; determining whether the train is in a low-speed running state or a high-speed running state according to a relationship between the current train speed and the train speed threshold; The total time duration that the train is in the low-speed running state is accumulated as the total low-speed running time duration; the total time duration that the train is in the high-speed running state is accumulated as the total high-speed running time duration.

3. The method for determining the amount of remaining sand in a train according to claim 1, wherein: The obtaining of the low-speed sand spreading rate and the high-speed sand spreading rate comprises: Obtaining a preset basic low-speed sand spreading rate and a basic high-speed sand spreading rate, and obtaining any one or more of weather factors, line condition information, and actual maintenance conditions as influencing factors; The low-speed sand spreading rate is determined according to the basic low-speed sand spreading rate and the influencing factor, and the high-speed sand spreading rate is determined according to the basic high-speed sand spreading rate and the influencing factor.

4. The method for determining the amount of remaining sand in a train according to any one of claims 1 to 3, characterized in that: Also includes: When the amount of remaining sand is lower than a preset maintenance threshold, a prompt message is issued.

5. A device for determining the amount of remaining sand on a train, characterized in that: include: an acquisition module, configured to acquire a total length of time during which the train is in a low-speed running state, a total length of time during which the train is in a high-speed running state, and acquire a low-speed sand spreading rate and a high-speed sand spreading rate; wherein, the low-speed running state is when the current speed of the train is less than a preset speed threshold, and the high-speed running state is when the current speed of the train is greater than or equal to the speed threshold; the low-speed sand spreading rate is the sand spreading rate of the train in the low-speed running state, and the high-speed sand spreading rate is the sand spreading rate of the train in the high-speed running state; a consumption determination module, configured to determine a total sand spreading consumption according to the total low-speed duration, the total high-speed duration, the low-speed sand spreading rate, and the high-speed sand spreading rate; a remaining sand amount determination module, configured to determine the remaining sand amount according to the total amount of sand loaded on the train and the total sand spreading consumption; Also includes: a plurality of different high-speed thresholds and a plurality of different low-speed thresholds; wherein the intervals between the sand spreading rates corresponding to the different speed thresholds are the same; The high-speed threshold and the low-speed threshold are used to further divide the current driving state of the train; Correspondingly, the total low-speed duration includes the same number of duration values as the low-speed vehicle speed threshold; The total high-speed time includes the same number of time values as the high-speed vehicle speed threshold; The low-speed sand spreading rate includes the same number of rate values as the low-speed vehicle speed threshold; The high-speed sand spreading rate includes the same number of rate values as the high-speed vehicle speed threshold; Determine the actual sand consumption each time sand is replenished; Determining an adjustment ratio according to a ratio of the total low-speed time to the total high-speed time; If the total sand spreading consumption is higher than the actual sand spreading consumption, reducing the low-speed sand spreading rate and the high-speed sand spreading rate according to the adjustment ratio; If the total sand spreading consumption is lower than the actual sand spreading consumption, the low-speed sand spreading rate and the high-speed sand spreading rate are increased according to the adjustment ratio.

6. A rail vehicle, characterized in that: include: memory for storing computer programs; A processor is used to implement the steps of the method for determining the remaining sand amount in a train as described in any one of claims 1 to 4 when executing the computer program.

7. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the method for determining the remaining sand amount in a train as described in any one of claims 1 to 4.

Images