Control Method, System and Device for Escalator or Moving Walkway Drive

Abstract

The present application relates to a control method, system and device for an escalator or moving walkway driver. The system includes a main control board, a driver and a motor, and the driver is connected to the main control board and the motor respectively. The method includes: in response to the change of load on the escalator or moving walkway, obtaining the corresponding output current in the driver; setting corresponding energy-saving operation conditions and energy-saving exit conditions based on a preset reference current; when the output current meets the energy-saving operation conditions, reducing the output voltage of the driver to make the driver enter a low-power energy-saving mode; when the output current meets the energy-saving exit conditions, increasing the output voltage of the driver to make the driver exit the energy-saving mode. Through the present application, the problem that the operation of the escalator or moving walkway will be affected in the energy-saving mode is solved, and the output voltage of the driver is adjusted according to the load of the escalator, so as to reduce the output power to achieve the energy-saving effect, and an energy-saving mode without affecting the operation is realized.

Description

Technical Field

[0001] The present application relates to the field of escalator and moving walk control, and particularly to a control method, system and device for an escalator or moving walk driver. Background Art

[0002] Escalators and moving walks as transportation tools in public places such as subways and shopping malls with a large flow of people are usually controlled by a driver to operate. In the current social development situation, energy conservation is an eternal theme. At present, the energy-saving operation of escalators or moving walks has been widely promoted and practically applied.

[0003] Existing escalators or moving walks are all installed with detection units such as photoelectric sensors or other similar external detection devices at the handrail entrance. According to the pedestrian situation detected by the detection device, the escalator or moving walk is triggered and controlled to operate in a low-speed mode, thereby achieving the effect of energy conservation. Since the detection device may have false detections or false triggers, it will correspondingly affect the operation of the escalator or moving walk. Therefore, there is a problem that the operation will be affected in the energy-saving mode.

[0004] In view of the problem that the operation will be affected in the energy-saving mode in the related art, no effective solution has been proposed yet. Summary of the Invention

[0005] In this embodiment, a control method, system and device for an escalator or moving walk driver are provided to solve the problem that the operation will be affected in the energy-saving mode in the related art.

[0006] In a first aspect, in this embodiment, a control method for an escalator or moving walk driver is provided, which is applicable to an escalator or moving walk driver control system; the system includes: a main control board, a driver, and a motor, and the driver is respectively connected to the main control board and the motor; the method includes:

[0007] Responding to the change of load on the escalator or moving walk to obtain the corresponding output current in the driver;

[0008] Based on a preset reference current, setting corresponding energy-saving operation conditions and energy-saving exit conditions;

[0009] When the output current meets the energy-saving operation conditions, reducing the output voltage of the driver to make the driver enter a low-power energy-saving mode;

[0010] When the output current meets the energy-saving exit conditions, increasing the output voltage of the driver to make the driver exit the energy-saving mode.

[0011] In some of these embodiments, the obtaining of the corresponding output current in the driver in response to a change in the load on the escalator or sidewalk includes:

[0012] In the driver, a change in the motor load on the escalator causes a change in the output current;

[0013] The corresponding output current in the driver is obtained through the current detection module in the driver.

[0014] In some of these embodiments, the reference current is the output current under an arbitrary fixed-value load, and the reference current includes an upward reference current and a downward reference current.

[0015] In some of these embodiments, the above method further includes:

[0016] After the escalator or sidewalk operates at an arbitrary fixed-value load for a preset duration, the corresponding reference current is automatically obtained through a self-learning mode.

[0017] In some of these embodiments, the setting of the corresponding energy-saving operation conditions and energy-saving exit conditions based on a preset reference current includes:

[0018] According to the preset reference current, the corresponding energy-saving coefficient, current deviation coefficient, and stabilization duration are set;

[0019] Based on the reference current and the current deviation coefficient, a first threshold current is obtained, and the energy-saving operation condition is that the time for which the output current continuously remains less than the first threshold current needs to reach the stabilization duration;

[0020] Based on the reference current, the energy-saving coefficient, and the current deviation coefficient, a second threshold current is obtained, and the energy-saving exit condition is that the output current is greater than the second threshold current.

[0021] In some of these embodiments, after exiting the energy-saving mode, it further includes:

[0022] After the output voltage rises to reach the rated voltage, the escalator or sidewalk operates at the rated speed under the rated voltage;

[0023] The rated voltage is the output voltage of the driver when the escalator or sidewalk operates at the rated speed.

[0024] In some of these embodiments, in the motor, according to the driving instruction of the driver, the escalator or sidewalk is continuously driven at the rated speed in an upward state or a downward state.

[0025] In some of these embodiments, in the main control board, the driver is made to enter the operating state by sending an operation control signal to the driver.

[0026] In some of these embodiments, the above method further includes:

[0027] In the energy-saving mode, by setting multiple groups of the energy-saving coefficient and the current deviation coefficient, a third threshold current in the corresponding energy-saving operation conditions of each group of the energy-saving coefficient and the current deviation coefficient is obtained, where the third threshold current is less than the first threshold current and less than the second threshold current; the multiple groups of the energy-saving coefficient and the current deviation coefficient correspond to multiple groups of the output voltages of the driver to implement a multi-gear variable voltage energy-saving mode.

[0028] In a second aspect, in the present embodiment, a computer device is provided, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the method for controlling an escalator or moving walkway driver described in the first aspect above is implemented.

[0029] In a third aspect, in the present embodiment, a storage medium is provided, on which a computer program is stored. When the program is executed by a processor, the method for controlling an escalator or moving walkway driver described in the first aspect above is implemented.

[0030] Compared with the related art, in the method, system, and device for controlling an escalator or moving walkway driver provided in the present embodiment, where the system includes a main control board, a driver, and a motor, the driver is respectively connected to the main control board and the motor, the method is applicable to the above system, and in response to a change in the load on the escalator or walkway, the corresponding output current in the driver is obtained; based on a preset reference current, corresponding energy-saving operation conditions and energy-saving exit conditions are set; when the output current satisfies the energy-saving operation conditions, the output voltage of the driver is reduced to make the driver enter a low-power energy-saving mode; when the output current satisfies the energy-saving exit conditions, the output voltage of the driver is increased to make the driver exit the energy-saving mode, solving the problem that the operation will be affected in the energy-saving mode, achieving energy saving by adjusting the output voltage, and being able to not affect the operation of the escalator or walkway.

[0031] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more concise and understandable. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0033] Figure 1Hardware structure diagram of the control method for escalator or moving walk drive in an embodiment

[0034] Figure 2 Structural block diagram of the escalator drive control system in an embodiment

[0035] Figure 3 Flowchart of the escalator drive control method in an embodiment

[0036] Figure 4 Flowchart of the escalator or moving walk drive control method in a preferred embodiment

[0037] Figure 5 Schematic diagram of the changes in the drive output voltage and output current in a preferred embodiment

[0038] In the figure: 210, main control board; 220, drive; 221, current detection module; 230, motor Detailed implementation manners

[0039] For a clearer understanding of the purpose, technical solution and advantages of the present application, the present application will be described and illustrated below with reference to the accompanying drawings and embodiments

[0040] Unless otherwise defined, the technical terms or scientific terms involved in the present application shall have the general meanings understood by those with ordinary skills in the technical field to which the present application belongs. In the present application, words such as "a", "one", "a kind of", "the", "these" and the like do not indicate a limitation in quantity, and they can be singular or plural. The terms "including", "comprising", "having" and any variants thereof involved in the present application are intended to cover non-exclusive inclusion; for example, a process, method, system, product or device including a series of steps or modules (units) is not limited to the listed steps or modules (units), but may include unlisted steps or modules (units), or may include other steps or modules (units) inherent in these processes, methods, products or devices. The terms "connected", "coupled" and the like involved in the present application do not limit to physical or mechanical connections, but may include electrical connections, whether directly or indirectly. The "multiple" involved in the present application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" may represent: A exists alone, A and B exist simultaneously, and B exists alone. Usually, the character " / " indicates that the objects before and after are in an "or" relationship. The terms "first", "second", "third" and the like involved in the present application are only used to distinguish similar objects and do not represent a specific order for the objects

[0041] The method embodiments provided in this embodiment may be executed on a terminal, a computer, or a similar computing device. For example, when running on a terminal, Figure 1 is a hardware block diagram of the terminal of the escalator or moving walkway drive control method in this embodiment. As Figure 1 shown, the terminal may include one or more ( Figure 1 only one is shown in the figure) processors 102 and a memory 104 for storing data. Among them, the processor 102 may include, but is not limited to, processing devices such as a microprocessor MCU or a programmable logic device FPGA. The above terminal may also include a transmission device 106 for communication functions and an input / output device 108. Those of ordinary skill in the art can understand that Figure 1 the structure shown is only schematic and does not limit the structure of the above terminal. For example, the terminal may further include more or fewer components than Figure 1 shown in the figure, or have a different configuration from Figure 1 shown.

[0042] The memory 104 can be used to store computer programs. For example, software programs and modules of application software, such as the computer program corresponding to the escalator or moving walkway drive control method in this embodiment. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, implements the above method. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memories, or other non-volatile solid-state memories. In some instances, the memory 104 may further include a memory remotely provided with respect to the processor 102, and these remote memories can be connected to the terminal through a network. Examples of the above networks include, but are not limited to, the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0043] The transmission device 106 is used to receive or send data via a network. The above network includes a wireless network provided by the communication provider of the terminal. In one embodiment, the transmission device 106 includes a network adapter (abbreviated as NIC), which can be connected to other network devices through a base station and thus can communicate with the Internet. In one embodiment, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0044] In this embodiment, an escalator drive control method is provided. This method is applicable to an escalator drive control system, Figure 2 is the corresponding structure block diagram of the system, as Figure 2As shown in the figure, the system includes: a main control board 210, a driver 220, and a motor 230. The driver 220 is respectively connected to the main control board 210 and the motor 230. The driver 220 also includes a current detection module 221. Among them, the main control board 210 sends an operation control signal to the driver 220. After receiving the operation control signal, the driver 220 enters the operation state and simultaneously drives the motor 230 to operate. The motor 230 is connected to the escalator and continuously drives the escalator to operate in the upward or downward state at a constant speed. Moreover, the motor 230 can also sense the load change on the escalator and further feedback it to the driver 220. This system is a closed-loop control system composed of the above structures.

[0045] In some of these embodiments, the above driver control method can also be applied to an automatic walkway driver control system. The structure of this system is similar to that of the escalator driver control system, including: a main control board, a driver, and a motor. The driver also includes a current detection module. Among them, the driver is respectively connected to the main control board and the motor. The motor is connected to the automatic walkway. Under the drive of the driver, the motor drives the automatic walkway to run horizontally at a constant speed (or run at a small inclination angle).

[0046] Correspondingly, Figure 3 is the flowchart of the method in this embodiment. As Figure 3 shown, the method includes the following steps:

[0047] Step S310, in response to the load change on the escalator, to obtain the corresponding output current in the driver.

[0048] Specifically, the load change on the escalator causes the output current of the driver to change. Generally, the greater the load, the greater the output current of the driver, and the smaller the load, the smaller the output current of the driver. It is monitored inside the driver.

[0049] Step S320, based on a preset reference current, set the corresponding energy-saving operation condition and energy-saving exit condition.

[0050] Specifically, set a reference current for judging the escalator load situation. The output current of the driver under any fixed load can be set as the reference current. Set the energy-saving operation condition and energy-saving exit condition corresponding to the reference current. By judging whether the actual output current of the driver meets the set energy-saving operation condition or energy-saving exit condition, the driver enters or exits the energy-saving mode.

[0051] Step S330, when the output current meets the energy-saving operation condition, reduce the output voltage of the driver to make the driver enter the low-power energy-saving mode.

[0052] Specifically, when the load on the escalator decreases, the actual output current of the drive will also decrease accordingly. When the output current of the drive decreases to meet the energy-saving operation condition, the output voltage is actively controlled by the drive to decrease, so that the output power of the drive decreases accordingly, and it enters the energy-saving mode with low power.

[0053] Step S340, when the output current meets the energy-saving exit condition, increase the output voltage of the drive to make the drive exit the energy-saving mode.

[0054] Specifically, when the load on the escalator increases, the actual output current of the drive will also increase accordingly. When the output current of the drive increases to meet the energy-saving exit condition, the output voltage is actively controlled by the drive to increase, so that the drive exits the energy-saving mode.

[0055] In some existing escalators or moving walks, detection units such as photoelectric sensors or other similar external detection devices are installed at the handrail entrance. According to the pedestrian situation detected by the detection device, the escalator or moving walk is triggered and controlled to operate in a low-speed mode, thereby achieving the effect of energy saving. Since the detection device may have false detections or false triggers, it will correspondingly affect the operation of the escalator or moving walk. There may be a situation where there are pedestrians on the escalator but it enters the low-speed mode. This embodiment effectively supplements the existing technology. Through the above steps, it can respond to the load change on the escalator in the drive, and then according to whether the actual output current of the drive meets the energy-saving operation condition, by controlling the change of the output voltage of the drive, the energy-saving mode of reducing the actual output power is realized, solving the problem that the operation of the escalator will be affected in the energy-saving mode, and realizing the low-power energy-saving mode that does not affect the operation of the escalator. It can be conceived that the escalator drive control method provided in the embodiments of the present application can also be applied to automatic transmission facilities such as moving walks.

[0056] In some of the embodiments, the above-mentioned responding to the load change on the escalator to obtain the corresponding output current in the drive includes the following steps:

[0057] Respond to the change in the motor load on the escalator in the drive, causing a change in the output current;

[0058] Obtain the corresponding output current in the drive through the current detection module in the drive.

[0059] Specifically, when the load on the escalator changes, the load on the motor also changes accordingly, and the output current of the driver also changes. For example, when the load on the escalator increases, the motor naturally requires a corresponding increase in the output current of the driver to drive the escalator with a larger load. The current detection module inside the driver can detect the change in the output current of the driver and obtain the corresponding output current in the driver when the motor load changes.

[0060] Through this embodiment, when the change in the load on the escalator causes a change in the output current of the driver, the actual output current situation in the driver can be obtained through the current detection module in the driver, so as to make a judgment based on the output current under different loads subsequently.

[0061] In one of the embodiments, the above-mentioned reference current is the output current under any fixed-value load, and the reference current includes an upward reference current and a downward reference current; after the escalator runs at any fixed-value load for a preset duration, the corresponding reference current is automatically obtained through the self-learning mode.

[0062] Specifically, the preset reference current is used as the judgment criterion for the load situation on the escalator, and it can be the output current under any fixed-value load of the escalator. Since the escalator has two running directions, upward and downward, in combination with the actual situation, even under the same load, when the running direction of the escalator is different, there are differences in the output current of the driver. Therefore, the reference current includes the upward reference current and the downward reference current of the escalator for distinction, serving as the corresponding current reference values when the escalator runs in different directions.

[0063] When setting the reference current, it is usually set by manually inputting the actual value monitored in the driver output current monitoring menu. Further, in this embodiment, a self-learning mode is also provided. Taking the case where the reference current is the no-load current as an example, the above-mentioned self-learning mode includes the following steps:

[0064] (1) First, ensure that the escalator can operate normally and there are no people or objects on the escalator, and enter the no-load current self-learning mode through the set mode parameters;

[0065] (2) After the escalator runs stably in the self-learning mode for a certain period of time, when it is monitored that the actual output current and the learned no-load current are consistent within a reasonable error range, the self-learning is completed.

[0066] Specifically, since the monitored no-load current (actual output current) fluctuates within a certain range during the actual operation of the escalator, an error range can be set. When the self-learned no-load current and the monitored output current are consistent within the error range (±5%), the self-learning is considered completed.

[0067] Furthermore, the no-load current of the upward operation and the no-load current of the downward operation are obtained by monitoring the output current of the driver or the above-mentioned self-learning mode respectively. The self-learning mode provided in this embodiment can be implemented by a specific software algorithm. Considering the mechanical structure and power difference of the whole escalator, there are certain differences in the no-load operation current of each escalator. The above-mentioned self-learning mode can effectively and accurately memorize the value of the no-load current of each escalator after the escalator completes self-learning.

[0068] In one of the embodiments, based on the preset reference current, corresponding energy-saving operation conditions and energy-saving exit conditions are set, including the following steps:

[0069] According to the preset reference current, corresponding energy-saving coefficients, current deviation coefficients, and stable durations are set.

[0070] Specifically, the setting of the energy-saving coefficient and the current deviation coefficient is related to the preset reference current. If the preset reference current is changed, the setting of the coefficient also needs to be adjusted accordingly. Further, the threshold value of the energy-saving mode operation can also be adjusted by adjusting the energy-saving coefficient and the current deviation coefficient to meet the actual needs of the escalator user.

[0071] Based on the reference current and the current deviation coefficient, a first threshold current is obtained. The energy-saving operation condition is that the time when the output current continuously is less than the first threshold current needs to reach the stable duration.

[0072] Based on the reference current, the energy-saving coefficient, and the current deviation coefficient, a second threshold current is obtained. The energy-saving exit condition is that the output current is greater than the second threshold current.

[0073] Specifically, the first threshold current I 第一阈值 =I 基准 ×(1 + b), where I 基准 represents the reference current, and b represents the current deviation coefficient (0 < b ≤ 1). Therefore, the energy-saving operation condition is that the driver output current continuously is less than I

[0074] 第一阈值 needs to reach the stable duration, and the driver can enter the energy-saving mode.

[0075] The second threshold current I 第二阈值 =I 基准 ×a×(1 + b), where a represents the energy-saving coefficient (0 < a ≤ 1). Therefore, the energy-saving exit condition is that the driver output current is greater than I 第二阈值 , and the driver can exit the energy-saving mode.

[0076] Further, if it is necessary to minimize power and save energy consumption in actual requirements, then according to the above calculation method of the first threshold current, the value of the current deviation coefficient can be increased accordingly to enable the driver to enter the energy-saving mode faster. Preferably, when the no-load current is used as the reference current, the energy-saving coefficient can be manually set to 0.7, the current deviation coefficient can be set to 0.3, and the stabilization duration can be set to 10 s through menu parameters.

[0077] In this embodiment, by setting the energy-saving coefficient and the current deviation coefficient, the corresponding energy-saving operation conditions and energy-saving exit conditions are obtained, so that when the load on the escalator causes a change in the output current of the driver, the driver can enter or exit the energy-saving mode according to the corresponding conditions.

[0078] In some of these embodiments, after the above energy-saving mode is exited, the following steps are further included:

[0079] After the output voltage rises to reach the rated voltage, the escalator runs at the rated speed under the rated voltage;

[0080] The rated voltage is the output voltage of the driver when the escalator runs at the rated speed.

[0081] Specifically, the rated voltage U 额定 is the output voltage of the driver when the escalator runs at the rated speed. In the energy-saving mode, the output voltage of the driver is a stable energy-saving voltage, where the energy-saving voltage U 节能 = U 额定 × a, where a represents the energy-saving coefficient (0 < a ≤ 1). When the load on the escalator increases and the output current of the driver becomes large enough to exit the energy-saving mode, the output voltage of the driver gradually rises from the energy-saving voltage to the rated voltage and continues to run stably after reaching the rated voltage.

[0082] In some of these embodiments, in the motor, according to the driving instruction of the driver, the escalator is continuously driven to run in the upward or downward state at the rated speed.

[0083] Specifically, the motor starts to drive the escalator to run under the driving instruction of the driver, and at the same time, feeds back the change situation of the load on the escalator to the driver, causing a change in the output current of the driver. On the other hand, when the load decreases, the driver adjusts the voltage infinitely according to the load change to reduce the output power. At the same time, since the particle current on the motor becomes smaller when the motor load decreases, the loss on the motor is reduced. Therefore, the motor can continuously drive the escalator to run at the rated speed while reducing the output power, realizing an energy-saving mode without speed reduction and making the energy-saving operation more efficient and stable.

[0084] In some of these embodiments, the above method further includes:

[0085] In the energy-saving mode, by setting multiple groups of energy-saving coefficients and current deviation coefficients, the third threshold current in the energy-saving operation conditions corresponding to each group of energy-saving coefficients and current deviation coefficients is obtained, where the third threshold current is less than the first threshold current and less than the second threshold current; the multiple groups of energy-saving coefficients and current deviation coefficients correspond to multiple groups of driver output voltages to implement a multi-gear variable voltage energy-saving mode.

[0086] Specifically, in the description of the above embodiments, the situation of setting a group of energy-saving coefficients and current deviation coefficients is provided, and the first threshold current, the second threshold current, and the energy-saving voltage value can be calculated, and energy saving is achieved through single-gear variable voltage regulation. Further, in this embodiment, based on the above concept, when the output current meets the first threshold current of the energy-saving operation conditions and enters the first gear of the energy-saving mode, by setting multiple groups of energy-saving coefficients and current deviation coefficients, multiple third threshold currents will be obtained accordingly. The third threshold current is used to further determine whether the output current meets the conditions for entering the second gear, the third gear, etc. in the energy-saving mode, where the third threshold current is less than the first threshold current and less than the second threshold current. In this way, in the energy-saving mode, the multiple groups of energy-saving coefficients and current deviation coefficients correspond to multiple groups of driver output voltages, and during the change of the escalator load, according to the situation where the driver output current meets the corresponding threshold current, a multi-gear variable voltage energy-saving mode is implemented.

[0087] By setting multiple groups of energy-saving coefficients and current deviation coefficients in this embodiment, the energy-saving mode can be further subdivided, thereby achieving more accurate and efficient energy saving.

[0088] The following describes and illustrates this embodiment through preferred embodiments.

[0089] Figure 4 is a preferred flowchart of the control method for the escalator or moving walkway driver in this embodiment, as Figure 4 shown, the method includes the following steps:

[0090] Step S410, in the main control board, by sending a running control signal to the driver, the driver is made to enter the running state.

[0091] Step S420, in the driver, in response to the change in the motor load on the escalator or moving walkway, the change in the driver output current is obtained through the current detection module in the driver.

[0092] Step S430, after the escalator or moving walkway runs no-load for a preset duration, the no-load current is automatically obtained as the reference current through the self-learning mode.

[0093] Step S440, set the corresponding energy-saving coefficient a, current deviation coefficient b, and stable duration according to the no-load current.

[0094] Specifically, the energy-saving coefficient, current deviation coefficient, and stable duration are 0.7, 0.3, and 10 s, respectively.

[0095] Step S450: Calculate the first threshold current. When the time that the output current of the driver continuously is less than the first threshold current reaches the stable duration, the energy-saving operation condition is satisfied, and enter the energy-saving mode.

[0096] Among them, the first threshold current I 第一阈值 = I 基准 ×(1 + b).

[0097] Step S451: Reduce the output voltage of the driver so that the driver enters the energy-saving mode with low power, and drive the motor to drive the escalator or sidewalk to continuously run at the rated speed.

[0098] Step S460: Calculate the second threshold current. When the output current of the driver is greater than the second threshold current, the energy-saving exit condition is satisfied, and exit the energy-saving mode.

[0099] Among them, the second threshold current I 第二阈值 = I 基准 ×a×(1 + b).

[0100] Step S461: Increase the output voltage of the driver so that the driver exits the energy-saving mode, and when the output voltage rises to the rated voltage, drive the motor to drive the escalator or sidewalk to run at the rated speed under the rated voltage.

[0101] It should be noted that the steps shown in the above process or the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than here. For example, steps S450 and S451 can be interchanged with steps S460 and S461.

[0102] To further illustrate the changes in the output current and output voltage of the driver in the present application when entering and exiting the energy-saving mode, Figure 5 is a schematic diagram of the changes in the output voltage and output current of the driver in this embodiment. As Figure 5 shown, assuming that the escalator or sidewalk starts running with no load and the load gradually increases as an ideal state, when the no-load current is used as the reference current, the ideal state of this change includes three stages:

[0103] The first stage: First, the main control board controls the driver to enter the running state, and the output voltage and output current of the driver gradually increase until reaching the rated voltage, and the drive motor runs at the rated speed. At this time, the output current is the no-load current.

[0104] In the second stage, when the escalator or moving walk is unloaded, the output current of the drive meets the energy-saving operation condition. By controlling the drive, the output voltage is gradually reduced to enter the energy-saving mode until the output voltage reaches the energy-saving voltage. At this time, the output current also decreases accordingly, causing the output power of the drive to drop, while the drive motor still drives the escalator or moving walk at the rated speed.

[0105] In the third stage, when the load of the escalator or moving walk gradually increases, the output current of the drive also gradually increases. When the output current of the drive meets the energy-saving exit condition, by controlling the drive, the output voltage is gradually increased to exit the energy-saving mode until it reaches the rated voltage, and then continues to drive the motor at a constant speed to drive the escalator or moving walk at the rated voltage.

[0106] It should be noted that this schematic diagram only provides the schematic diagram of the output voltage and output current of the drive when the escalator or moving walk starts running from the unloaded state and the load gradually increases. For escalators or moving walks starting to run in other states, the changes in the output voltage and output current of their drives can also be conceived.

[0107] In this embodiment, a computer device is also provided, including a memory and a processor. A computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any of the above method embodiments.

[0108] Optionally, the above computer device may further include a transmission device and input / output devices. Among them, the transmission device is connected to the above processor, and the input / output devices are connected to the above processor.

[0109] It should be noted that the specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementation manners, and will not be repeated in this embodiment.

[0110] In addition, in combination with the escalator or moving walk drive control method provided in the above embodiments, a storage medium can also be provided to implement it in this embodiment. A computer program is stored on the storage medium; when the computer program is executed by the processor, it implements any of the above escalator or moving walk drive control methods.

[0111] It should be understood that the specific embodiments described here are only used to explain this application, rather than to limit it. According to the embodiments provided in this application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of this application.

[0112] Obviously, the accompanying drawings are only some examples or embodiments of the present application. For those of ordinary skill in the art, the present application can also be applied to other similar situations based on these drawings without creative efforts. Additionally, it can be understood that although the work done during this development process may be complex and time-consuming, for those of ordinary skill in the art, certain design, manufacturing, or production changes based on the technical content disclosed in the present application are only conventional technical means and should not be regarded as insufficient disclosure of the present application.

[0113] The term "embodiment" in this application means that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various positions in the specification and does not necessarily mean the same embodiment, nor does it mean being independent or alternative to other embodiments and mutually exclusive. Those of ordinary skill in the art can clearly or implicitly understand that the embodiments described in this application can be combined with other embodiments without conflict.

[0114] The above-described embodiments merely represent several implementation manners of the present application. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of patent protection. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A control method for an escalator or moving walk drive, characterized in that, Applicable to the drive control system of escalators or moving walks; the system includes: a main control board, a driver, and a motor, and the driver is respectively connected to the main control board and the motor; the escalator or moving walk operates at a constant speed; the method includes: Responding to the change in load on the escalator or moving walk to obtain the corresponding output current in the driver; Based on a preset reference current, setting corresponding energy-saving operation conditions and energy-saving exit conditions; setting the output current of the driver under any fixed-value load as the reference current; When the output current meets the energy-saving operation conditions, reducing the output voltage of the driver to make the driver enter a low-power energy-saving mode; the energy-saving operation condition is that the time when the output current continuously is less than the first threshold current needs to reach a stable duration; When the output current meets the energy-saving exit conditions, increasing the output voltage of the driver to make the driver exit the energy-saving mode; the energy-saving exit condition is that the output current is greater than the second threshold current; Wherein, according to the preset reference current, setting corresponding energy-saving coefficients, current deviation coefficients, and stable durations; Obtaining the first threshold current based on the reference current and the current deviation coefficient; obtaining the second threshold current based on the reference current, the energy-saving coefficient, and the current deviation coefficient.

2. The control method of an escalator or moving walkway drive according to claim 1, characterized in that, The responding to the change in load on the escalator or moving walk to obtain the corresponding output current in the driver includes: Responding to the change in the motor load on the escalator in the driver, causing a change in the output current; Obtaining the corresponding output current in the driver through the current detection module in the driver.

3. The control method for an escalator or moving walkway drive according to claim 1, characterized in that The reference current is the output current under any fixed-value load, and the reference current includes an upward reference current and a downward reference current.

4. The control method of an escalator or moving walkway drive according to claim 3, characterized in that, It further includes: After the escalator or moving walk operates at any fixed-value load for a preset duration, automatically obtaining the corresponding reference current through a self-learning mode.

5. The control method for an escalator or moving walkway drive according to claim 1, characterized in that, After exiting the energy-saving mode, it further includes: After the output voltage rises to the rated voltage, operating the escalator or moving walk at the rated speed under the rated voltage; The rated voltage is the output voltage of the driver when the escalator or moving walk operates at the rated speed.

6. The control method of an escalator or moving walkway drive according to claim 1, characterized in that, In the motor, continuously driving the escalator or moving walk in an upward or downward state at the rated speed according to the driving instruction of the driver.

7. The control method of an escalator or moving walkway drive according to claim 1, characterized in that In the main control board, making the driver enter the operating state by sending an operation control signal to the driver.

8. The control method for an escalator or moving walkway drive according to claim 1, characterized in that, It further includes: In the energy-saving mode, by setting multiple groups of the energy-saving coefficients and current deviation coefficients, obtaining the third threshold current in the corresponding energy-saving operation conditions of each group of the energy-saving coefficients and current deviation coefficients, wherein the third threshold current is less than the first threshold current and less than the second threshold current; multiple groups of the energy-saving coefficients and current deviation coefficients correspond to multiple groups of the driver output voltages to achieve a multi-gear variable voltage energy-saving mode.

9. A computer device, comprising a memory and a processor, characterized in that, A computer program is stored in the memory, and the processor is configured to run the computer program to execute the escalator or moving walk drive control method according to any one of claims 1 to 8.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, the steps of the escalator or moving walk drive control method according to any one of claims 1 to 8 are implemented.

Images