Platform door resistance monitoring method, device, equipment and storage medium

Abstract

The embodiment of the present invention discloses a platform door door resistance monitoring method, device, equipment and storage medium. The embodiment of the present invention divides the movement process of the platform door into multiple time periods, and determines the average door resistance of the platform door in each time period according to the instantaneous output power of the motor and the instantaneous moving speed of the platform door collected in each time period, as well as the transmission efficiency of the pre-set belt and the door body mass of the platform door. The embodiment of the present invention can realize automatic monitoring of the door resistance of the platform door during the movement of the platform door, and no human participation is required in this process. The measurement of door resistance no longer depends on the experience of front-line operation and maintenance personnel. While improving the accuracy of measuring the door resistance of the platform door, it also reduces labor costs and time costs, and can realize 24-hour real-time monitoring without window restrictions such as non-operating time, thereby improving the efficiency of measuring door resistance and being able to detect abnormal door resistance in time.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of measurement and automation, and in particular, to a method, device, equipment and storage medium for monitoring the door resistance of a platform door. Background Art

[0002] In order to isolate passengers from the tracks in rail transit, platform doors are generally installed on both sides of the platform of rail transit stations to ensure driving safety. Since the failure of the platform door will directly affect the normal operation of the train, it is very important to ensure the stable operation of the platform door. The door resistance during the operation of the platform door is a key indicator reflecting the operating status of the platform door. In the prior art, the operation and maintenance personnel generally observe and compare the opening and closing time of the platform door, or manually push and pull the platform door during non-operating hours to determine the door resistance of the platform door.

[0003] However, the manual method of measuring the door resistance of the platform door in the prior art requires a large time and labor cost, has low measurement efficiency, and the measurement result is determined subjectively by humans, resulting in low measurement accuracy. Summary of the invention

[0004] The embodiments of the present invention provide a platform door door resistance monitoring method, device, equipment and storage medium, which can improve the efficiency and accuracy of monitoring the door resistance of the platform door, and solve the technical problems of low efficiency and low accuracy in the prior art of manually measuring the door resistance of the platform door.

[0005] In a first aspect, an embodiment of the present invention provides a method for monitoring door resistance of a platform door, comprising:

[0006] When the platform door is detected to be performing an action, the instantaneous output power of the motor driving the platform door and the instantaneous moving speed of the platform door are periodically collected, and the action includes a door opening action and a door closing action;

[0007] The transmission efficiency of the belt and the door body mass of the platform door are obtained, and the motor drives the platform door to move by driving the belt;

[0008] The time duration for the platform door to complete the action is divided into multiple continuous time periods, and the average door resistance corresponding to each time period is determined based on the transmission efficiency, the door body mass, and the instantaneous output power and instantaneous moving speed corresponding to each time period, wherein the duration of each time period is the same as the interval duration of the cycle.

[0009] Wherein, determining the average door resistance corresponding to each of the time periods according to the transmission efficiency, the door body mass, and the instantaneous output power and instantaneous moving speed corresponding to each of the time periods comprises:

[0010] Determine the traction work done in each of the time periods according to the transmission efficiency, the instantaneous output power corresponding to each of the time periods, and the duration of each of the time periods;

[0011] Determine the change in kinetic energy of the door body in each time period according to the mass of the door body and the instantaneous moving speed corresponding to each time period;

[0012] Determine the door body displacement distance of each time period according to the instantaneous moving speed corresponding to each time period and the duration of each time period;

[0013] The average door resistance corresponding to each of the time periods is determined according to the traction work, the change in door body kinetic energy and the door body displacement distance corresponding to each of the time periods.

[0014] Wherein, determining the traction work of each time period according to the transmission efficiency, the instantaneous output power corresponding to each time period and the duration of each time period comprises:

[0015] Determine a first instantaneous output power and a second instantaneous output power corresponding to a start time and an end time of each of the time periods respectively;

[0016] Adding the first instantaneous output power and the second instantaneous output power to obtain a first sum;

[0017] The traction work done in each of the time periods is determined according to the first sum value of each of the time periods, the transmission efficiency and the duration of each of the time periods.

[0018] Wherein, determining the change amount of the door body kinetic energy in each time period according to the door body mass and the instantaneous moving speed corresponding to each time period includes:

[0019] Determine a first instantaneous moving speed and a second instantaneous moving speed corresponding to the start time and the end time of each of the time periods respectively;

[0020] determining a first difference between the square of the second instantaneous moving speed and the square of the first instantaneous speed;

[0021] The change in kinetic energy of the door body in each time period is determined according to the first difference in each time period and the mass of the door body.

[0022] Wherein, determining the door body displacement distance of each time period according to the instantaneous moving speed corresponding to each time period and the duration of each time period includes:

[0023] Determine a first instantaneous moving speed and a second instantaneous moving speed corresponding to the start time and the end time of each of the time periods respectively;

[0024] Adding the first instantaneous moving speed and the second instantaneous moving speed to obtain a second sum;

[0025] The door body displacement distance of each time period is determined according to the second sum value of each time period and the duration of each time period.

[0026] Wherein, determining the average door resistance corresponding to each time period according to the traction work, the door body kinetic energy change and the door body displacement distance corresponding to each time period comprises:

[0027] Determine a second difference between the traction work in each of the time periods and the change in the door body kinetic energy in each of the time periods;

[0028] The second difference value of each time period is divided by the door body displacement distance of each time period to obtain an average door resistance corresponding to each time period.

[0029] Among them, it also includes:

[0030] Determine the average door resistance and the door resistance variance of the platform door during the process of completing one action according to the average door resistance corresponding to each time period;

[0031] When the door resistance average value is greater than a first preset threshold value, and the door resistance variance is greater than or equal to a second preset threshold value, it is determined that the door resistance of the platform door is abnormal due to wind pressure;

[0032] When the door resistance average value is greater than the first preset threshold value and the door resistance variance is less than the second preset threshold value, it is determined that the door resistance of the platform door is abnormal due to equipment failure.

[0033] In a second aspect, an embodiment of the present invention provides a platform door resistance monitoring device, comprising:

[0034] A data acquisition module, for periodically acquiring the instantaneous output power of the motor driving the platform door and the instantaneous moving speed of the platform door when the platform door moves, wherein the movement includes the door opening movement and the door closing movement;

[0035] A preset data acquisition module is used to acquire the transmission efficiency of the belt and the door body mass of the platform door. The motor drives the platform door to move by driving the belt to move;

[0036] The average door resistance determination module is used to divide the time duration for the platform door to complete the action into multiple continuous time periods, and determine the average door resistance corresponding to each time period according to the transmission efficiency, the door body mass, and the instantaneous output power and instantaneous moving speed corresponding to each time period, wherein the duration of each time period is the same as the interval duration of the cycle.

[0037] In a third aspect, an embodiment of the present invention provides a platform door door resistance monitoring device, the platform door door resistance monitoring device comprising a processor and a memory;

[0038] The memory is used to store a computer program and transmit the computer program to the processor;

[0039] The processor is used to execute the platform door resistance monitoring method as described in the first aspect according to the instructions in the computer program.

[0040] In a fourth aspect, an embodiment of the present invention provides a storage medium storing computer executable instructions, wherein the computer executable instructions, when executed by a computer processor, are used to execute the platform door resistance monitoring method as described in the first aspect.

[0041] As described above, the embodiment of the present invention provides a platform door door resistance monitoring method, device, equipment and storage medium. The embodiment of the present invention divides the platform door movement process into multiple time periods, and determines the average door resistance of the platform door in each time period according to the instantaneous output power of the motor and the instantaneous moving speed of the platform door collected in each time period, as well as the transmission efficiency of the pre-set belt and the door body mass of the platform door. The embodiment of the present invention can realize automatic monitoring of the door resistance of the platform door during the movement of the platform door, and no human participation is required in this process. The measurement of the door resistance no longer depends on the experience of the front-line operation and maintenance personnel. While improving the accuracy of measuring the door resistance of the platform door, it also reduces the labor cost and time cost, and can realize 24-hour real-time monitoring without window restrictions such as non-operating time, improve the efficiency of measuring the door resistance, and can timely discover when the door resistance is abnormal. In addition, the embodiment of the present invention can also output the diagnosis results of the wind pressure or equipment abnormality of the platform door according to the average value of the door resistance, which helps the operation and maintenance personnel to quickly locate the fault when the platform door is abnormal, and improve the maintenance efficiency of the platform door. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A flow chart of a platform door resistance monitoring method provided in an embodiment of the present invention.

[0043] Figure 2 A schematic diagram of determining whether the door resistance of a platform door is abnormal is provided in an embodiment of the present invention.

[0044] Figure 3 A schematic structural diagram of a platform door resistance monitoring device provided in an embodiment of the present invention.

[0045] Figure 4 A schematic structural diagram of a platform door resistance monitoring device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0046] The following description and accompanying drawings fully illustrate the specific embodiments of the present application so that those skilled in the art can practice them. The examples represent possible variations only. Unless explicitly required, separate components and functions are optional, and the order of operation can vary. The parts and features of some embodiments may be included in or replace the parts and features of other embodiments. The scope of the embodiments of the present application includes the entire scope of the claims, and all available equivalents of the claims. In this article, each embodiment may be represented individually or generally by the term "invention", which is only for convenience, and if more than one invention is disclosed in fact, it is not intended to automatically limit the scope of the application to any single invention or inventive concept. In this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, without requiring or implying any actual relationship or order between these entities or operations. Moreover, the term "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method or device including a series of elements includes not only those elements, but also other elements that are not explicitly listed. The various embodiments are described in a progressive manner herein, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. As for the structures, products, etc. disclosed in the embodiments, since they correspond to the parts disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method part.

[0047] Taking the common belt-driven full-height platform door as an example, a platform door consists of two door bodies, each of which is composed of components such as door frame, door glass, skirting board, manual unlocking mechanism and nylon brush. Each door body is rigidly connected to the belt through the door body suspension device. The door body suspension device uses rollers to support the door body to move on the guide rail, and the lower part of the door body is provided with guide shoes and guide grooves. In general, the door control unit controls the motor to drive the belt to run, thereby realizing the opening and closing action of the door body.

[0048] For belt-driven full-height platform doors, the door resistance mainly consists of the following parts: (1) rolling friction F1 between the roller and the guide rail; (2) sliding friction F2 generated by the side contact between the roller and the guide rail; (3) sliding friction F3 between the roller and the guide rail; (4) sliding friction F4 between the door body and the column; (4) sliding friction F5 between the brush and the door body suspension device; (5) sliding friction F6 between the guide shoe and the guide groove. Among them, F2, F4, F5 and F6 will be generated under wind pressure, door body skewness, etc.; F3 will be generated when the roller is worn or the roller is installed too tight. It can be seen that the change of the door resistance of the platform door may be caused by roller wear, foreign matter stuck in the guide rail or guide groove, door body skewness, aging of the drive belt, installation problems or wind pressure. Therefore, the door resistance of the platform door can usually be used as an important indicator to evaluate the status of the platform door.

[0049] In the prior art, when measuring the door resistance of the platform door, the operation and maintenance personnel usually observe and compare the opening and closing time of the platform door. The longer the time, the greater the door resistance. Alternatively, the platform door is manually pushed and pulled during non-operating hours, and the door resistance of the platform door is determined based on the subjective feelings of the operation and maintenance personnel. However, the manual measurement of the door resistance of the platform door has the following technical problems:

[0050] (1) Rail transit networks usually contain tens of thousands of platform doors, and the platform doors are scattered over tens or even hundreds of kilometers. Measuring the door resistance of each platform door requires huge manpower and time costs.

[0051] (2) The door resistance measurement process requires manual operation by the operation and maintenance personnel, which depends on their professional quality and experience.

[0052] (3) The size of the door resistance depends on the subjective judgment of the operation and maintenance personnel on site. The judgment standards are not unified, and the measurement results are difficult to quantify accurately.

[0053] (4) Door resistance is only measured during quarterly, semi-annual or even annual inspections. The low frequency of measurement makes it difficult to detect abnormal door resistance of platform doors in a timely manner.

[0054] Based on this, in order to solve the above technical problems, an embodiment of the present invention provides a platform door resistance monitoring method, such as Figure 1 As shown, Figure 1A flow chart of a platform door resistance monitoring method provided in an embodiment of the present invention. The platform door resistance monitoring method provided in an embodiment of the present invention can be executed by a platform door resistance monitoring device, which can be implemented by software and / or hardware. The platform door resistance monitoring device can be composed of two or more physical entities, or can be composed of one physical entity. For example, the platform door resistance monitoring device can be a computer, a host computer, a tablet, and other devices. The platform door resistance monitoring method provided in an embodiment of the present invention includes the following steps:

[0055] Step 101: When the platform door is monitored to be in motion, the instantaneous output power of the motor driving the platform door and the instantaneous moving speed of the platform door are periodically collected. The motion includes door opening and door closing.

[0056] In this embodiment, when the platform door is monitored to perform an action, it is necessary to periodically collect the instantaneous output power of the motor driving the platform door and the instantaneous moving speed of the platform door, wherein the actions performed by the platform door include door opening and door closing, and the moment when the first cycle starts is the moment when the platform door starts to perform the action. It should also be noted that the interval between two adjacent cycles, i.e., the interval between the start times of two adjacent cycles, can be set according to actual needs, and is not specifically limited in this embodiment. For example, the interval between the cycles can be set to 0.1 seconds or 0.05 seconds, etc.

[0057] Step 102: Obtain the transmission efficiency of the belt and the door body mass of the platform door. The motor drives the platform door to move by driving the belt.

[0058] While monitoring the platform door's execution of action, it is also necessary to obtain the belt transmission efficiency and the door body quality of the platform door. The belt transmission efficiency and the door body quality of the platform door need to be set in advance. If the transmission efficiency and the door body quality have been obtained before, if the transmission efficiency and the door body quality have not changed, they will no longer need to be obtained later.

[0059] Step 103, divide the time it takes for the platform door to complete one action into multiple continuous time periods, and determine the average door resistance corresponding to each time period based on the transmission efficiency, door body mass, and the instantaneous output power and instantaneous moving speed corresponding to each time period, wherein the duration of each time period is the same as the interval between the cycles.

[0060] When the platform door completes an action, the collection of instantaneous output power and instantaneous moving speed is stopped, and the duration of the platform door completing an action is divided into multiple consecutive time periods, where the duration of each time period is the same as the interval of the cycle. For example, when the interval of the cycle is 0.1 seconds, the duration of each time period is also 0.1 seconds. In addition, it can be understood that the moment when the first time period starts is the moment when the first cycle starts.

[0061] After dividing the duration of a platform door to complete an action into a plurality of continuous time periods, the instantaneous output power and instantaneous moving speed collected in each time period can be determined, and the average door resistance corresponding to each time period can be determined according to the transmission efficiency, the door body mass, and the instantaneous output power and instantaneous moving speed corresponding to each time period. Exemplarily, when calculating the average door resistance, the traction work, the door body kinetic energy change, and the door body displacement distance corresponding to each time period can be determined according to the transmission efficiency, the door body mass, and the instantaneous output power and instantaneous moving speed corresponding to each time period, and then the average door resistance corresponding to each time period can be determined according to the traction work, the door body kinetic energy change, and the door body displacement distance corresponding to each time period.

[0062] On the basis of the above embodiment, in step 103, the average door resistance corresponding to each time period is determined according to the transmission efficiency, the door body mass, the instantaneous output power corresponding to each time period, and the instantaneous moving speed, including:

[0063] Step 1031: Determine the traction work done in each time period according to the transmission efficiency, the instantaneous output power corresponding to each time period, and the duration of each time period.

[0064] In this embodiment, the traction work of each period can be determined according to the transmission efficiency, the instantaneous output power corresponding to each period, and the duration of each period. Specifically, assuming that the process of the platform door completing one action is divided into multiple consecutive periods , by time period When determining the traction work of each time period, it is first necessary to determine the first instantaneous output power and the second instantaneous output power corresponding to the start time and the end time of each time period. In terms of t The first instantaneous output power corresponding to time 1 and t The second instantaneous output power corresponding to time 2 Then, the first instantaneous output power and the second instantaneous output power are added to obtain a first sum. Finally, the traction work of each time period is determined according to the first sum of each time period, the transmission efficiency and the duration of each time period. The specific formula for the traction work is as follows:

[0065]

[0066] in To do work for traction, K For transmission efficiency.

[0067] Step 1032: Determine the change in the door body kinetic energy in each time period based on the door body mass and the instantaneous moving speed corresponding to each time period.

[0068] At the same time, it is necessary to determine the change in the door kinetic energy in each period according to the door mass and the instantaneous moving speed corresponding to each period. For example, specifically, firstly, the first instantaneous moving speed and the second instantaneous moving speed corresponding to the start time and the end time of each time period need to be determined respectively. In terms of t The first instantaneous moving speed corresponding to time 1 and t The second instantaneous movement speed corresponding to the 2nd moment After that, the first difference between the square of the second instantaneous moving speed and the square of the first instantaneous speed is determined, and finally, the change in the door body kinetic energy in each time period is determined according to the first difference in each time period and the door body mass. The specific formula for the change in door kinetic energy is as follows:

[0069]

[0070] in, is the change of kinetic energy of the door body, The quality of the door body.

[0071] Step 1033: Determine the door displacement distance of each time period according to the instantaneous moving speed corresponding to each time period and the duration of each time period.

[0072] In addition, it is also necessary to determine the door displacement distance of each time period according to the instantaneous moving speed corresponding to each time period and the duration of each time period. Specifically, first determine the first instantaneous moving speed and the second instantaneous moving speed corresponding to the start time and the end time of each time period respectively; then add the first instantaneous moving speed and the second instantaneous moving speed to obtain the second sum; finally, determine the door displacement distance of each time period according to the second sum of each time period and the duration of each time period. For example, based on the time period For example, determine the time period The specific formula for the door displacement distance is as follows:

[0073]

[0074] in S 1 is the door displacement distance.

[0075] Step 1034: Determine the average door resistance corresponding to each time period based on the traction work, the door body kinetic energy change, and the door body displacement distance corresponding to each time period.

[0076] After determining the traction work, door kinetic energy change and door displacement distance corresponding to each time period, the average door resistance corresponding to each time period can be further calculated based on the traction work, door kinetic energy change and door displacement distance. Specifically, the second difference between the traction work and the door kinetic energy change in each time period is determined, and the second difference in each time period is divided by the door displacement distance in each time period to obtain the average door resistance corresponding to each time period. For example, based on the time period For example, determine the time period The specific formula for the average door resistance is as follows:

[0077]

[0078] in, F 1 is the time period Average door resistance.

[0079] In one embodiment, after determining the average door resistance corresponding to each time period during a platform door's one action, it is also possible to monitor whether the door resistance of the platform door is abnormal based on the average door resistance corresponding to each time period. Specifically, based on the above embodiment, it also includes:

[0080] Step 104: Determine the average door resistance and the door resistance variance during one movement of the platform door according to the average door resistance corresponding to each time period.

[0081] When determining whether the door resistance of the platform door is abnormal, it is necessary to determine the average door resistance and the door resistance variance during one movement of the platform door based on the average door resistance corresponding to each time period. Specifically, the calculation formulas for the average door resistance and the door resistance variance are as follows:

[0082]

[0083] in, A is the average door resistance, F i For the i The average door resistance for each period, n The number of time periods divided to complete an action.

[0084]

[0085] in, B is the door resistance variance.

[0086] Step 105: When the door resistance average value is greater than the first preset threshold value and the door resistance variance is greater than or equal to the second preset threshold value, it is determined that the door resistance of the platform door is abnormal due to wind pressure.

[0087] Step 106: When the door resistance average value is greater than the first preset threshold value and the door resistance variance is less than the second preset threshold value, it is determined that the door resistance of the platform door is abnormal due to equipment failure.

[0088] It should be noted that when the platform door is operating normally (no wind pressure, no abnormalities), the door resistance during the movement process can be approximately considered constant. When the platform door is operating under conditions such as wind pressure, roller wear, foreign objects stuck in the guide rail or guide groove, and the door body is skewed, the door resistance will increase. In addition, when the platform door is in motion, the wind pressure will change with the change of the platform door position during the movement, so that the door resistance changes with the change of the platform door position. In addition to wind pressure, other effects on the door resistance due to abnormalities of the equipment itself can be considered to be approximately constant during the movement. Based on this, a first preset threshold value T can be pre-set in this embodiment. A and the second preset threshold T B , for the door resistance variance B and the door resistance average A during each platform door action, when and , it is considered that the platform door is affected by wind pressure, and the system issues a wind pressure prompt; when and , it is considered that the door resistance of the platform door is abnormal. The abnormal door resistance may be caused by equipment failure, such as roller wear, foreign matter stuck in the guide rail or guide groove, and door body skewness. At this time, the platform door abnormality prompt can be issued. In one embodiment, the specific process of determining whether the door resistance of the platform door is abnormal is as follows: Figure 2 As shown, Figure 2 A schematic diagram of determining whether the door resistance of a platform door is abnormal is provided in an embodiment of the present invention.

[0089] As described above, the embodiment of the present invention provides a platform door door resistance monitoring method. The embodiment of the present invention divides the platform door movement process into multiple time periods, and determines the average door resistance of the platform door in each time period according to the instantaneous output power of the motor and the instantaneous moving speed of the platform door collected in each time period, as well as the transmission efficiency of the pre-set belt and the door body mass of the platform door. The embodiment of the present invention can realize automatic monitoring of the door resistance of the platform door during the movement of the platform door, and no human participation is required in this process. The measurement of the door resistance no longer depends on the experience of the front-line operation and maintenance personnel. While improving the accuracy of measuring the door resistance of the platform door, it also reduces the labor cost and time cost, and can realize 24-hour real-time monitoring without window restrictions such as non-operating time, improve the efficiency of measuring the door resistance, and can timely discover when the door resistance is abnormal. In addition, the embodiment of the present invention can also output the diagnosis results of the wind pressure or equipment abnormality of the platform door according to the average value of the door resistance and the variance of the door resistance, which helps the operation and maintenance personnel to quickly locate the fault when the platform door is abnormal, and improve the maintenance efficiency of the platform door.

[0090] The embodiment of the present invention also provides a platform door resistance monitoring device, such as Figure 3 As shown, Figure 3 The present invention provides a schematic diagram of the structure of a platform door resistance monitoring device. The platform door resistance monitoring device provided by the embodiment of the present invention includes:

[0091] The data acquisition module 201 is used to periodically collect the instantaneous output power of the motor driving the platform door and the instantaneous moving speed of the platform door when the platform door moves, and the movement includes the door opening movement and the door closing movement;

[0092] The preset data acquisition module 202 is used to obtain the transmission efficiency of the belt and the door body mass of the platform door. The motor drives the platform door to move by driving the belt;

[0093] The average door resistance determination module 203 is used to divide the time duration for the platform door to complete one action into multiple continuous time periods, and determine the average door resistance corresponding to each time period based on the transmission efficiency, door body mass, and the instantaneous output power and instantaneous moving speed corresponding to each time period, wherein the duration of each time period is the same as the interval duration of the cycle.

[0094] The average door resistance 203 determination module includes:

[0095] A traction work determination submodule is used to determine the traction work of each time period according to the transmission efficiency, the instantaneous output power corresponding to each time period and the duration of each time period;

[0096] The kinetic energy variation determination submodule is used to determine the kinetic energy variation of the door body in each time period according to the door body mass and the instantaneous moving speed corresponding to each time period;

[0097] The displacement distance determination submodule is used to determine the door body displacement distance of each time period according to the instantaneous moving speed corresponding to each time period and the duration of each time period;

[0098] The average door resistance determination submodule is used to determine the average door resistance corresponding to each time period according to the traction work corresponding to each time period, the change in door body kinetic energy and the door body displacement distance.

[0099] The traction work determination submodule includes:

[0100] An instantaneous power determination unit, used to determine a first instantaneous output power and a second instantaneous output power corresponding to a start time and an end time of each time period, respectively;

[0101] A first summing unit, configured to add the first instantaneous output power and the second instantaneous output power to obtain a first sum value;

[0102] The traction work determination unit is used to determine the traction work of each time period according to the first sum value of each time period, the transmission efficiency and the duration of each time period.

[0103] Among them, the kinetic energy change determination submodule includes:

[0104] a first speed determining unit, for determining a first instantaneous moving speed and a second instantaneous moving speed corresponding to a start time and an end time of each time period, respectively;

[0105] A first difference unit, used for determining a first difference between the square of the second instantaneous moving speed and the square of the first instantaneous speed;

[0106] The kinetic energy variation determination unit is used to determine the kinetic energy variation of the door body in each time period according to the first difference in each time period and the door body mass.

[0107] Among them, the displacement distance determination submodule includes:

[0108] A second speed determining unit, used to determine a first instantaneous moving speed and a second instantaneous moving speed corresponding to a start time and an end time of each time period, respectively;

[0109] A second summing unit, used for adding the first instantaneous moving speed and the second instantaneous moving speed to obtain a second sum value;

[0110] The displacement distance determining unit is used to determine the door body displacement distance of each time period according to the second sum value of each time period and the duration of each time period.

[0111] Among them, the average door resistance determination submodule includes:

[0112] A second difference unit is used to determine a second difference between the traction work done in each time period and the door body kinetic energy change in each time period;

[0113] The average door resistance determination unit is used to divide the second difference in each time period by the door body displacement distance in each time period to obtain the average door resistance corresponding to each time period.

[0114] Among them, the platform door resistance monitoring device also includes:

[0115] A variance determination module, for determining an average door resistance and a door resistance variance during a platform door's one-time movement according to an average door resistance corresponding to each time period;

[0116] A first door resistance abnormality determination module, configured to determine that the door resistance of the platform door is abnormal due to wind pressure when the door resistance average value is greater than a first preset threshold value and the door resistance variance is greater than or equal to a second preset threshold value;

[0117] The second door resistance abnormality determination module is used to determine that the door resistance of the platform door has an abnormality caused by equipment failure when the door resistance average value is greater than the first preset threshold and the door resistance variance is less than the second preset threshold.

[0118] The platform door resistance monitoring device provided in the embodiment of the present invention is included in the platform door resistance monitoring equipment, and can be used to execute the platform door resistance monitoring method provided in the above embodiment, and has corresponding functions and beneficial effects.

[0119] It is worth noting that in the above-mentioned embodiment of the platform door resistance monitoring device, the various units and modules included are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0120] This embodiment also provides a platform door resistance monitoring device, such as Figure 4 As shown, Figure 4 A schematic diagram of the structure of a platform door resistance monitoring device provided by an embodiment of the present invention is shown in FIG. Figure 4 As shown, the platform door resistance monitoring device 30 provided in the embodiment of the present invention includes a processor 300 and a memory 301;

[0121] The memory 301 is used to store the computer program 302 and transmit the computer program 302 to the processor 300;

[0122] The processor 300 is used to execute the steps in the above-mentioned embodiment of the platform door resistance monitoring method according to the instructions in the computer program 302.

[0123] Exemplarily, the computer program 302 may be divided into one or more modules / units, one or more modules / units are stored in the memory 301, and are executed by the processor 300 to complete the present application. One or more modules / units may be a series of computer program instruction segments capable of completing specific functions, and the instruction segments are used to describe the execution process of the computer program 302 in the platform door resistance monitoring device 30.

[0124] The platform door resistance monitoring device 30 may be a computing device such as a desktop computer, a notebook, a PDA, or a cloud server. The platform door resistance monitoring device 30 may include, but is not limited to, a processor 300 and a memory 301. Those skilled in the art will appreciate that Figure 4 It is only an example of the platform door resistance monitoring device 30 and does not constitute a limitation of the platform door resistance monitoring device 30. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the platform door resistance monitoring device 30 may also include input and output devices, network access devices, buses, etc.

[0125] The processor 300 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0126] The memory 301 may be an internal storage unit of the platform door resistance monitoring device 30, such as a hard disk or memory of the platform door resistance monitoring device 30. The memory 301 may also be an external storage device of the platform door resistance monitoring device 30, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the platform door resistance monitoring device 30. Further, the memory 301 may also include both an internal storage unit and an external storage device of the platform door resistance monitoring device 30. The memory 301 is used to store computer programs and other programs and data required by the platform door resistance monitoring device 30. The memory 301 may also be used to temporarily store data that has been output or is to be output.

[0127] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0128] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0129] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0130] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0131] If the integrated unit 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 invention, in essence, 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. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store computer programs.

[0132] An embodiment of the present invention further provides a storage medium comprising computer executable instructions, wherein the computer executable instructions are used to execute a platform door resistance monitoring method when executed by a computer processor, the method comprising the following steps:

[0133] When the platform door is detected to be in motion, the instantaneous output power of the motor driving the platform door and the instantaneous moving speed of the platform door are periodically collected. The motion includes door opening and door closing.

[0134] Obtain the transmission efficiency of the belt and the door mass of the platform door. The motor drives the platform door to move by driving the belt.

[0135] The time it takes for the platform door to complete one movement is divided into multiple continuous time periods. The average door resistance corresponding to each time period is determined based on the transmission efficiency, door mass, instantaneous output power corresponding to each time period, and instantaneous moving speed. The duration of each time period is the same as the interval between the cycles.

[0136] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the embodiments of the present invention are not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the embodiments of the present invention. Therefore, although the embodiments of the present invention are described in more detail through the above embodiments, the embodiments of the present invention are not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the embodiments of the present invention, and the scope of the embodiments of the present invention is determined by the scope of the appended claims.

Claims

1. A method for monitoring door resistance of a platform door, characterized in that: include: When the platform door is detected to be performing an action, the instantaneous output power of the motor driving the platform door and the instantaneous moving speed of the platform door are periodically collected, and the action includes a door opening action and a door closing action; The transmission efficiency of the belt and the door body mass of the platform door are obtained, and the motor drives the platform door to move by driving the belt; The duration of the platform door completing the action once is divided into a plurality of continuous time periods, and the average door resistance corresponding to each time period is determined according to the transmission efficiency, the door body mass, and the instantaneous output power and instantaneous moving speed corresponding to each time period, wherein the duration of each time period is the same as the interval of the cycle; Determine the average door resistance and the door resistance variance of the platform door during the process of completing one action according to the average door resistance corresponding to each time period; When the door resistance average value is greater than a first preset threshold value, and the door resistance variance is greater than or equal to a second preset threshold value, it is determined that the door resistance of the platform door is abnormal due to wind pressure; When the door resistance average value is greater than the first preset threshold value and the door resistance variance is less than the second preset threshold value, it is determined that the door resistance of the platform door is abnormal due to equipment failure; Wherein, determining the average door resistance corresponding to each of the time periods according to the transmission efficiency, the door body mass, and the instantaneous output power and instantaneous moving speed corresponding to each of the time periods comprises: Determine the traction work done in each of the time periods according to the transmission efficiency, the instantaneous output power corresponding to each of the time periods, and the duration of each of the time periods; Determine the change in kinetic energy of the door body in each time period according to the mass of the door body and the instantaneous moving speed corresponding to each time period; Determine the door body displacement distance of each time period according to the instantaneous moving speed corresponding to each time period and the duration of each time period; The average door resistance corresponding to each of the time periods is determined according to the traction work, the change in door body kinetic energy and the door body displacement distance corresponding to each of the time periods.

2. The platform door resistance monitoring method according to claim 1 is characterized in that: Determining the traction work done in each time period according to the transmission efficiency, the instantaneous output power corresponding to each time period, and the duration of each time period includes: Determine a first instantaneous output power and a second instantaneous output power corresponding to a start time and an end time of each of the time periods respectively; Adding the first instantaneous output power and the second instantaneous output power to obtain a first sum; The traction work done in each of the time periods is determined according to the first sum value of each of the time periods, the transmission efficiency and the duration of each of the time periods.

3. The platform door resistance monitoring method according to claim 1 is characterized in that: Determining the door body kinetic energy variation in each time period according to the door body mass and the instantaneous moving speed corresponding to each time period comprises: Determine a first instantaneous moving speed and a second instantaneous moving speed corresponding to the start time and the end time of each of the time periods respectively; determining a first difference between the square of the second instantaneous moving speed and the square of the first instantaneous moving speed; The change in kinetic energy of the door body in each time period is determined according to the first difference in each time period and the mass of the door body.

4. The platform door resistance monitoring method according to claim 1 is characterized in that: Determining the door body displacement distance of each time period according to the instantaneous moving speed corresponding to each time period and the duration of each time period includes: Determine a first instantaneous moving speed and a second instantaneous moving speed corresponding to the start time and the end time of each of the time periods respectively; Adding the first instantaneous moving speed and the second instantaneous moving speed to obtain a second sum; The door body displacement distance of each time period is determined according to the second sum value of each time period and the duration of each time period.

5. The platform door resistance monitoring method according to claim 1 is characterized in that: Determining the average door resistance corresponding to each time period according to the traction work, the door body kinetic energy change and the door body displacement distance corresponding to each time period includes: Determine a second difference between the traction work in each of the time periods and the change in the door body kinetic energy in each of the time periods; The second difference value of each time period is divided by the door body displacement distance of each time period to obtain an average door resistance corresponding to each time period.

6. A platform door resistance monitoring device, characterized in that: include: A data acquisition module, for periodically acquiring the instantaneous output power of the motor driving the platform door and the instantaneous moving speed of the platform door when the platform door moves, wherein the movement includes the door opening movement and the door closing movement; A preset data acquisition module is used to acquire the transmission efficiency of the belt and the door body mass of the platform door. The motor drives the platform door to move by driving the belt to move; an average door resistance determination module, for dividing the duration of the platform door completing one action into a plurality of continuous time periods, and determining the average door resistance corresponding to each time period according to the transmission efficiency, the door body mass, and the instantaneous output power and instantaneous moving speed corresponding to each time period, wherein the duration of each time period is the same as the interval duration of the cycle; A variance determination module, for determining an average door resistance and a door resistance variance in a process in which the platform door completes one action according to an average door resistance corresponding to each of the time periods; A first door resistance abnormality determination module, configured to determine that the door resistance of the platform door is abnormal due to wind pressure when the door resistance average value is greater than a first preset threshold value and the door resistance variance is greater than or equal to a second preset threshold value; A second door resistance abnormality determination module, configured to determine that the door resistance of the platform door is abnormal due to a device failure when the door resistance average value is greater than the first preset threshold value and the door resistance variance is less than the second preset threshold value; Wherein, the average door resistance determination module includes: A traction work determination submodule, used to determine the traction work of each time period according to the transmission efficiency and the instantaneous output power corresponding to each time period and the duration of each time period; A kinetic energy variation determination submodule, used to determine the door body kinetic energy variation in each time period according to the door body mass and the instantaneous moving speed corresponding to each time period; A displacement distance determination submodule, used to determine the door body displacement distance of each time period according to the instantaneous moving speed corresponding to each time period and the duration of each time period; The average door resistance determination submodule is used to determine the average door resistance corresponding to each of the time periods according to the traction work, the door body kinetic energy change and the door body displacement distance corresponding to each of the time periods.

7. A platform door resistance monitoring device, characterized in that: The platform door resistance monitoring device includes a processor and a memory; The memory is used to store a computer program and transmit the computer program to the processor; The processor is used to execute the platform door resistance monitoring method according to any one of claims 1-5 according to the instructions in the computer program.

8. A storage medium storing computer executable instructions, characterized in that: When the computer executable instructions are executed by a computer processor, they are used to perform the platform door resistance monitoring method according to any one of claims 1 to 5.

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