Transmission ratio detection method, transmission ratio detection device and storage medium

Abstract

The embodiment of the invention discloses a transmission ratio detection method, a transmission ratio detection device and a storage medium, and belongs to the technical field of elevator control. The method comprises the steps that normal operation of the elevator is ensured by learning and using direction parameters of an encoder in the elevator and magnetic pole angle information corresponding to a zero pulse signal in the encoder; in the normal operation process of the elevator, the target pulse number of the traction wheel between the two zero pulse signals can be accurately obtained, the transmission ratio between the traction wheel and the friction wheel of the encoder can be accurately determined based on the target pulse number of the traction wheel and the pulse line number of the encoder, and normal control over motor operation is ensured.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of elevator control technology, and in particular to a transmission ratio detection method, a transmission ratio detection device, and a storage medium. Background Art

[0002] The existing disc motor converts the rotating magnetic field into a traveling wave magnetic field moving in the horizontal direction, forming an innovative planar linear ring motor. The thin and large permanent magnets in the disc motor can obtain greater magnetic excitation, the rotor and stator have the same diameter and are parallel, and the diameter of the traction wheel integrated with the rotor is always smaller than the rotor diameter, so it can easily obtain greater torque.

[0003] Disc motors are widely used in the elevator field. The encoder is generally installed on the side of the elevator motor traction wheel. The encoder's friction wheel is used to ensure that the encoder's rotation is synchronized with the motor traction wheel. A photoelectric switch is installed on the motor traction wheel to detect the absolute position signal of the motor. The absolute position signal generates a zero-position pulse signal in one circle, which is used to correct the motor's magnetic pole position.

[0004] Since the encoder is not coaxially installed, the elevator control system needs to obtain the transmission ratio information to control the motor operation normally. At present, the transmission ratio information is mainly obtained by measuring the friction wheel diameter and the traction wheel diameter of the encoder. However, during the overcharging of the elevator operation, the friction wheel and the traction wheel of the encoder are prone to wear, which leads to a certain deviation in the friction wheel diameter and the traction wheel diameter. At this time, the elevator control system will find it difficult to accurately obtain the transmission ratio information and cannot control the motor operation normally. Summary of the invention

[0005] The embodiments of the present application provide a transmission ratio detection method, a transmission ratio detection device, and a storage medium, which can accurately obtain transmission ratio information and ensure normal control of motor operation.

[0006] The embodiment of the present application provides a transmission ratio detection method, including:

[0007] During the self-learning process of the elevator, when the elevator is controlled to run in a preset direction based on a given frequency, the first accumulated pulse between two adjacent zero-position pulse signals is detected based on the encoder installed on the traction wheel of the elevator; based on the sign of the given frequency and the sign of the first accumulated pulse, the direction parameter of the encoder is determined and saved; wherein the zero-position pulse signal is a pulse signal outputted by the traction wheel for each rotation;

[0008] When the elevator is controlled to run in a set direction opposite to the preset direction, when the target zero position pulse signal is detected to be valid, the current first magnetic pole angle information of the encoder is saved; when the target zero position pulse signal is detected to be invalid, the current second magnetic pole angle information of the encoder is saved;

[0009] Based on the direction parameter of the encoder, the first magnetic pole angle information and the second magnetic pole angle information, controlling the elevator to operate normally at a stable speed;

[0010] During the normal operation of the elevator, the target pulse number of the traction wheel is determined based on the second accumulated pulse between two adjacent zero-position pulse signals detected by the encoder; the transmission ratio between the traction wheel and the friction wheel of the encoder is determined based on the target pulse number of the traction wheel and the number of pulse lines of the encoder.

[0011] Further, controlling the elevator to run in a preset direction based on a given frequency includes:

[0012] Before the elevator gate is opened, the excitation current of the elevator is increased to a given excitation current based on a preset increase time;

[0013] When the elevator is opened, the running frequency of the elevator is accelerated to the given frequency based on a preset acceleration time, and the elevator is controlled to run in a preset direction based on the given frequency and the given excitation current.

[0014] Further, based on the sign of the given frequency and the sign of the first accumulated pulse, determining the direction parameter of the encoder includes:

[0015] When the sign of the given frequency is the same as the sign of the first accumulated pulse, it is determined that the direction parameter of the encoder is normal;

[0016] When the sign of the given frequency is opposite to the sign of the first accumulated pulse, the direction parameter of the encoder is determined to be the reverse direction of the encoder.

[0017] Further, based on the direction parameter of the encoder, controlling the elevator to run normally at a stable speed includes:

[0018] When the direction parameter of the encoder indicates that the direction of the encoder is reversed, the phase sequence of the two orthogonal pulse signals of the encoder is swapped;

[0019] When the direction parameter of the encoder indicates that the direction of the encoder is normal, the phase sequence of the two orthogonal pulse signals of the encoder is saved.

[0020] Further, based on the first magnetic pole angle information and the second magnetic pole angle information, controlling the elevator to run normally at a stable speed includes:

[0021] If the current running direction of the elevator is the same as the set direction, the first magnetic pole angle information is used to correct the magnetic pole angle corresponding to the encoder when the zero pulse signal is valid;

[0022] If the current running direction of the elevator is opposite to the set direction, the second magnetic pole angle information is used to correct the magnetic pole angle corresponding to the encoder when the zero pulse signal is valid.

[0023] Furthermore, the determining the target pulse number of the traction wheel based on the second accumulated pulse between two adjacent zero-position pulse signals detected by the encoder comprises:

[0024] Based on the encoder, a plurality of second accumulated pulses corresponding to a plurality of groups of two adjacent zero-position pulse signals in a single operation of the elevator are detected; wherein the single operation is a single operation process of the elevator from operation to stop;

[0025] The plurality of second accumulated pulses are averaged to obtain a target pulse number of the traction wheel.

[0026] Further, the determining the transmission ratio between the traction wheel and the friction wheel of the encoder based on the target pulse number of the traction wheel and the pulse line number of the encoder includes:

[0027] The target pulse number of the traction wheel is divided by the pulse line number of the encoder to obtain the transmission ratio between the traction wheel and the friction wheel of the encoder.

[0028] The embodiment of the present application also provides a transmission ratio detection device, comprising:

[0029] A first storage unit is used for, during the self-learning process of the elevator, when the elevator is controlled to run in a preset direction based on a given frequency, detecting a first accumulated pulse between two adjacent zero-position pulse signals based on an encoder installed on the traction wheel of the elevator; determining and storing a direction parameter of the encoder based on a sign of the given frequency and a sign of the first accumulated pulse; wherein the zero-position pulse signal is a pulse signal outputted by the traction wheel for each rotation of the traction wheel;

[0030] A second storage unit is used to control the elevator to run in a set direction opposite to the preset direction, and when the target zero position pulse signal is detected to be valid, save the current first magnetic pole angle information of the encoder, and when the target zero position pulse signal is detected to be invalid, save the current second magnetic pole angle information of the encoder;

[0031] A control unit, configured to control the elevator to operate normally at a stable speed based on the direction parameter of the encoder, the first magnetic pole angle information, and the second magnetic pole angle information;

[0032] A determination unit is used to determine the target pulse number of the traction wheel based on the second accumulated pulse between two adjacent zero-position pulse signals detected by the encoder during the normal operation of the elevator; and to determine the transmission ratio between the traction wheel and the friction wheel of the encoder based on the target pulse number of the traction wheel and the number of pulse lines of the encoder.

[0033] The embodiment of the present application also provides a transmission ratio detection device, comprising:

[0034] CPU, memory, input and output interface, wired or wireless network interface, power supply;

[0035] The memory is a short-term storage memory or a persistent storage memory;

[0036] The central processor is configured to communicate with the memory, and execute the instruction operation in the memory on the control plane function entity to perform the above method.

[0037] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium includes instructions. When the instructions are executed on a computer, the computer executes the method described above.

[0038] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0039] In an embodiment of the present application, during the self-learning process of the elevator, when the elevator is controlled to run in a preset direction based on a given frequency, the first accumulated pulse between two adjacent zero-position pulse signals is detected based on the encoder installed on the traction wheel of the elevator; based on the sign of the given frequency and the sign of the first accumulated pulse, the direction parameter of the encoder is determined and saved; when the elevator is controlled to run in a set direction opposite to the preset direction, when the target zero-position pulse signal is detected to be valid, the current first magnetic pole angle information of the encoder is saved, and when the target zero-position pulse signal is detected to be invalid, the current second magnetic pole angle information of the encoder is saved; based on the direction parameter, the first magnetic pole angle information and the second magnetic pole angle information of the encoder, the elevator is controlled to run normally at a stable speed; during the normal operation of the elevator, based on the second accumulated pulse between two adjacent zero-position pulse signals detected by the encoder, the target pulse number of the traction wheel is determined; based on the target pulse number of the traction wheel and the number of pulse lines of the encoder, the transmission ratio between the traction wheel and the friction wheel of the encoder is determined.

[0040] It can be seen that in the embodiment of the present application, the normal operation of the elevator is ensured by learning and using the direction parameters of the encoder in the elevator and the magnetic pole angle information corresponding to the zero-position pulse signal in the encoder; during the normal operation of the elevator, the target number of pulses of the traction wheel between the two zero-position pulse signals can be accurately obtained, and based on the target number of pulses of the traction wheel and the number of pulse lines of the encoder, the transmission ratio between the traction wheel and the friction wheel of the encoder can be accurately determined to ensure normal control of the motor operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0042] Figure 1 A transmission ratio detection flow chart disclosed in an embodiment of the present application;

[0043] Figure 2 A schematic diagram of a transmission ratio detection device disclosed in an embodiment of the present application;

[0044] Figure 3 This is a schematic diagram of another transmission ratio detection device disclosed in an embodiment of the present application. DETAILED DESCRIPTION

[0045] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] In the description of the embodiments of the present application, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present application.

[0047] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0048] At present, disc motors are widely used in the elevator field. Among them, the encoder is generally installed on the side of the elevator motor traction wheel. The friction wheel of the encoder is used to ensure that the rotation of the encoder is synchronized with the operation of the motor traction wheel. A photoelectric switch is installed on the motor traction wheel to detect the absolute position signal of the motor. The absolute position signal generates a zero-position pulse signal for one circle to correct the motor magnetic pole position.

[0049] Since the encoder is not coaxially installed, the elevator control system needs to obtain the transmission ratio information to control the motor operation normally. At present, the transmission ratio information is mainly obtained by measuring the friction wheel diameter and the traction wheel diameter of the encoder. However, during the overcharge of the elevator operation, the friction wheel and the traction wheel of the encoder are prone to wear, which leads to a certain deviation between the friction wheel diameter and the traction wheel diameter. At this time, the elevator control system will find it difficult to accurately obtain the transmission ratio information and cannot control the motor operation normally. Therefore, the embodiment of the present application discloses a transmission ratio detection method that can accurately obtain the transmission ratio information to ensure the normal control of the motor operation, such as Figure 1 As shown, the specific steps include:

[0050] 101. When an elevator is controlled to run in a preset direction based on a given frequency, an encoder installed on a traction wheel of the elevator detects a first accumulated pulse between two adjacent zero-position pulse signals.

[0051] In an embodiment of the present application, during the self-learning process of the elevator, when the elevator is controlled to run in a preset direction based on a given frequency, the first accumulated pulse between two adjacent zero-position pulse signals can be detected based on the encoder installed on the traction wheel of the elevator. The preset direction of operation can be an elevator up or an elevator down, which is not specifically limited here; the zero-position pulse signal (Z signal) is a pulse signal output for each rotation of the traction wheel; the zero-position pulse signal can be: a low level is an invalid state, a high level is a valid state, or: a high level is an invalid signal, and a low level is a valid signal, which is not specifically limited here. A photoelectric switch can be on the traction wheel of the elevator, and the traction wheel runs one circle to generate a photoelectric switch that triggers a zero-position pulse signal.

[0052] Before the elevator gate is opened, the excitation current of the elevator can be increased to a given excitation current based on a preset increase time; the preset increase time can be 100mS or 200mS, which is not limited here; for example, the excitation current can be increased from zero to a given excitation current of 20A in 100mS. After the elevator gate is opened, if the elevator triggers a brake opening command, the operating frequency of the elevator is accelerated to a given frequency based on a preset acceleration time, and the elevator is controlled to run in a preset direction based on the given frequency and the given excitation current.

[0053] Among them, the first accumulated pulse between two adjacent zero-position pulse signals detected by the encoder installed on the traction wheel of the elevator can be specifically: when the elevator is running in a preset direction, when the photoelectric switch detects that the zero-position pulse signal is valid, the number of pulses detected by the encoder begins to be accumulated until the next zero-position pulse signal is detected, and the corresponding first accumulated pulse is obtained by statistics.

[0054] 102. Determine and save a direction parameter of the encoder based on the sign of the given frequency and the sign of the first accumulated pulse.

[0055] In an embodiment of the present application, after obtaining the first accumulated pulse, the direction parameter of the encoder can be determined and saved based on the sign of the given frequency and the sign of the first accumulated pulse. Wherein, the direction of the encoder is expressed as: the phase sequence between the orthogonal pulse signals (phase A and phase B), such as phase A leading phase B, or phase B leading phase A. The sign of the first accumulated pulse includes positive or negative. For example, when the number of pulses when the next zero-position pulse signal is detected decreases relative to the number of pulses when the zero-position pulse signal was detected last time, the sign of the first accumulated pulse is determined to be negative; when the number of pulses when the next zero-position pulse signal is detected increases relative to the number of pulses when the zero-position pulse signal was detected last time, the sign of the first accumulated pulse is determined to be positive.

[0056] Among them, when the sign of the given frequency is the same as the sign of the first accumulated pulse, the direction parameter of the encoder is determined to be the normal direction of the encoder; if the given frequency is positive and the first accumulated pulse is positive, the direction of the encoder is determined to be normal, if the given frequency is negative and the first accumulated pulse is negative, the direction of the encoder is determined to be normal. When the sign of the given frequency is opposite to the sign of the first accumulated pulse, the direction parameter of the encoder is determined to be the reverse direction of the encoder; if the given frequency is positive and the first accumulated pulse is negative, the direction of the encoder is determined to be reversed, if the given frequency is negative and the first accumulated pulse is positive, the direction of the encoder is determined to be reversed.

[0057] After saving the direction parameters of the encoder, the elevator can be controlled to decelerate to zero speed, close the brake, and stop.

[0058] 103. When the target zero position pulse signal is detected to be valid, the current first magnetic pole angle information of the encoder is saved; when the target zero position pulse signal is detected to be invalid, the current second magnetic pole angle information of the encoder is saved.

[0059] When the elevator is controlled to run in a set direction opposite to the preset direction, when the target zero-position pulse signal is detected to be valid, the current first magnetic pole angle information of the encoder is saved, and when the target zero-position pulse signal is detected to be invalid, the current second magnetic pole angle information of the encoder is saved. Wherein, the target zero-position pulse signal is any zero-position pulse signal triggered by the traction wheel when the elevator runs in the set direction. That is, the elevator is controlled to run in the opposite direction, based on the closed vector control operation, when the photoelectric switch detects the moment when the target zero-position pulse signal is valid, the current first magnetic pole angle information can be obtained based on the voltage equation of the rotating coordinate system of the permanent magnet synchronous motor, and the first magnetic pole angle information is saved to the control system as the magnetic pole zero point signal (i.e., the starting position) of the target zero-position pulse signal. Since the photoelectric switch has a certain effective distance, the corresponding target zero-position pulse signal has a certain effective width. When the target zero-position pulse signal crosses the effective width, that is, the moment when the target zero-position pulse signal is detected to be invalid, the current second magnetic pole angle information of the encoder can be saved.

[0060] After the elevator has learned the encoder's direction parameters, the first magnetic pole angle information, and the second magnetic pole angle information, and controlled the elevator to decelerate to zero speed, the brake is closed, the elevator stops, and the self-learning ends.

[0061] 104. Based on the direction parameter of the encoder, the first magnetic pole angle information, and the second magnetic pole angle information, the elevator is controlled to run normally at a stable speed.

[0062] Then, the elevator can be controlled to run normally at a stable speed based on the direction parameter of the encoder, the first magnetic pole angle information and the second magnetic pole angle information.

[0063] Specifically, when the direction parameter of the encoder is that the direction of the encoder is reverse, the phase sequence of the two orthogonal pulse signals of the encoder is swapped; that is, the phase sequence of phase A and phase B in the encoder is swapped. When the direction parameter of the encoder is that the direction of the encoder is normal, the phase sequence of the two orthogonal pulse signals of the encoder is saved. By self-learning the direction parameter of the encoder, the elevator is controlled to run normally at a stable speed based on the direction parameter of the encoder. There is no need to manually set the encoder direction, nor is there any need to detect the direction of the encoder through the outside world and modify it, which effectively improves the accuracy of the encoder direction when the elevator is operating normally.

[0064] Specifically, if the current running direction of the elevator is the same as the setting direction, the first magnetic pole angle information is used to correct the magnetic pole angle corresponding to the encoder when the zero-position pulse signal is valid; if the current running direction of the elevator is opposite to the setting direction, the second magnetic pole angle information is used to correct the magnetic pole angle corresponding to the encoder when the zero-position pulse signal is valid. That is, when the elevator is running normally, when the zero-position pulse signal is triggered and valid, if the current running direction of the elevator is the same as the setting direction, the first magnetic pole angle information is used to correct the magnetic pole angle corresponding to the encoder; if the current running direction of the elevator is opposite to the setting direction, the second magnetic pole angle information is used to correct the magnetic pole angle corresponding to the encoder.

[0065] 105. Determine the target pulse number of the traction wheel based on the second accumulated pulse between two adjacent zero-position pulse signals detected by the encoder.

[0066] It is understandable that during the normal operation of the elevator, since the friction wheel and traction wheel of the elevator encoder measure the speed by friction, the traction wheel will have friction loss after a long period of operation. After a long period of loss, the diameter of the encoder's friction wheel will become shorter. If the deviation is too large, the encoder will not be able to accurately detect the magnetic pole position information of the motor, and it is necessary to manually re-self-tune and re-obtain the transmission ratio data of the elevator traction wheel and the encoder's friction wheel, which is time-consuming and labor-intensive.

[0067] Therefore, in the embodiment of the present application, the target pulse number of the traction wheel is determined based on the second accumulated pulse between two adjacent zero-position pulse signals detected by the encoder, and the transmission ratio between the traction wheel and the friction wheel of the encoder is determined based on the target pulse number of the traction wheel and the number of pulse lines of the encoder, thereby effectively avoiding the deviation caused by friction and improving the rate of obtaining the transmission ratio.

[0068] Specifically, based on the encoder, multiple second accumulated pulses corresponding to multiple groups of two adjacent zero-position pulse signals in a single operation of the elevator can be detected; wherein a single operation is a single operation process of the elevator from running to stopping. Take an average of multiple second accumulated pulses to obtain the target pulse number of the traction wheel. That is, in the single operation of the elevator, multiple second accumulated pulses are stored in an array in sequence, and the old data in the array will be automatically overwritten. When the elevator stops, multiple second accumulated pulses will all exist in the array, and the multiple second accumulated pulses in the array will be summed and averaged as the target pulse number of the traction wheel. Among them, the array can be set in the RAM inside the elevator control system chip, and can store 1024 second accumulated pulses. The more second accumulated pulses are stored in the array, the better the anti-interference performance is, and the more accurate the target pulse number of the traction wheel is.

[0069] 106. Based on the target pulse number of the traction wheel and the pulse line number of the encoder, determine the transmission ratio between the traction wheel and the friction wheel of the encoder.

[0070] In the embodiment of the present application, the transmission ratio between the traction wheel and the friction wheel of the encoder can be determined based on the target pulse number of the traction wheel and the pulse line number of the encoder; wherein the pulse line number refers to the number of engraved lines on the photoelectric code disk of the encoder; the transmission ratio is the ratio of the rotation speed between the traction wheel and the friction wheel of the encoder. Specifically, the target pulse number of the traction wheel can be divided by the pulse line number of the encoder to obtain the transmission ratio between the traction wheel and the friction wheel of the encoder.

[0071] It can be seen that in the embodiment of the present application, the normal operation of the elevator is ensured by learning and using the direction parameters of the encoder in the elevator and the magnetic pole angle information corresponding to the zero-position pulse signal in the encoder; during the normal operation of the elevator, the target number of pulses of the traction wheel between the two zero-position pulse signals can be accurately obtained, and based on the target number of pulses of the traction wheel and the number of pulse lines of the encoder, the transmission ratio between the traction wheel and the friction wheel of the encoder can be accurately determined to ensure normal control of the motor operation.

[0072] The present application also provides a transmission ratio detection device, such as Figure 2 As shown, including:

[0073] The first storage unit 201 is used for, during the self-learning process of the elevator, when the elevator is controlled to run in a preset direction based on a given frequency, detecting a first accumulated pulse between two adjacent zero-position pulse signals based on an encoder installed on the traction wheel of the elevator; determining and storing a direction parameter of the encoder based on the sign of the given frequency and the sign of the first accumulated pulse; wherein the zero-position pulse signal is a pulse signal outputted by the traction wheel for each rotation of the traction wheel;

[0074] The second storage unit 202 is used to control the elevator to run in a set direction opposite to the preset direction, and when the target zero position pulse signal is detected to be valid, save the current first magnetic pole angle information of the encoder, and when the target zero position pulse signal is detected to be invalid, save the current second magnetic pole angle information of the encoder;

[0075] A control unit 203, configured to control the elevator to run normally at a stable speed based on the direction parameter of the encoder, the first magnetic pole angle information, and the second magnetic pole angle information;

[0076] The determination unit 204 is used to determine the target pulse number of the traction wheel based on the second accumulated pulse between two adjacent zero-position pulse signals detected by the encoder during the normal operation of the elevator; and determine the transmission ratio between the traction wheel and the friction wheel of the encoder based on the target pulse number of the traction wheel and the number of pulse lines of the encoder.

[0077] The present application also provides a transmission ratio detection device 300, such as Figure 3 As shown, the transmission ratio detection device 300 of the embodiment of the present application may include one or more central processing units (CPU) 301 and a memory 302 , and the memory 302 stores one or more application programs or data.

[0078] The memory 302 may be a volatile storage or a persistent storage. The program stored in the memory 402 may include one or more modules, each of which may include a series of instruction operations in the electronic device. Furthermore, the central processor 301 may be configured to communicate with the memory 302, and execute a series of instruction operations in the memory 302 on the transmission ratio detection device 300.

[0079] The transmission ratio detection device 300 may also include one or more power supplies 305, one or more wired or wireless network interfaces 304, one or more input and output interfaces 303, and / or one or more operating systems, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, etc.

[0080] The central processor 301 can execute the operations performed by the aforementioned first aspect or any specific method embodiment of the first aspect, and the details will not be repeated here.

[0081] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium includes instructions. When the instructions are executed on a computer, the computer executes the method described above.

[0082] 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.

[0083] 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 the units is only a logical function division. There may be other division methods in actual implementation, such as 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.

[0084] 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.

[0085] In addition, each functional unit in each embodiment of the present application 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.

[0086] 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 application is essentially 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, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. 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 and other media that can store program code.

Claims

1. A transmission ratio detection method, characterized in that: include: In the elevator self-learning process, when the elevator is controlled to run in a preset direction based on a given frequency, a first accumulated pulse between two adjacent zero-position pulse signals is detected based on an encoder installed on the traction wheel of the elevator; Based on the sign of the given frequency and the sign of the first accumulated pulse, the direction parameter of the encoder is determined and saved; wherein the zero position pulse signal is a pulse signal outputted by the traction wheel for each rotation; When the elevator is controlled to run in a set direction opposite to the preset direction, when the target zero position pulse signal is detected to be valid, the current first magnetic pole angle information of the encoder is saved; when the target zero position pulse signal is detected to be invalid, the current second magnetic pole angle information of the encoder is saved; Based on the direction parameter of the encoder, the first magnetic pole angle information and the second magnetic pole angle information, controlling the elevator to operate normally at a stable speed; During the normal operation of the elevator, the target pulse number of the traction wheel is determined based on the second accumulated pulse between two adjacent zero-position pulse signals detected by the encoder; the transmission ratio between the traction wheel and the friction wheel of the encoder is determined based on the target pulse number of the traction wheel and the number of pulse lines of the encoder.

2. The transmission ratio detection method according to claim 1, characterized in that: Controlling the elevator to run in a preset direction based on a given frequency includes: Before the elevator gate is opened, the excitation current of the elevator is increased to a given excitation current based on a preset increase time; When the elevator is opened, the running frequency of the elevator is accelerated to the given frequency based on a preset acceleration time, and the elevator is controlled to run in a preset direction based on the given frequency and the given excitation current.

3. The transmission ratio detection method according to claim 1, characterized in that: Determining the direction parameter of the encoder based on the sign of the given frequency and the sign of the first accumulated pulse includes: When the sign of the given frequency is the same as the sign of the first accumulated pulse, it is determined that the direction parameter of the encoder is normal; When the sign of the given frequency is opposite to the sign of the first accumulated pulse, the direction parameter of the encoder is determined to be the reverse direction of the encoder.

4. The transmission ratio detection method according to claim 1, characterized in that: Based on the direction parameter of the encoder, controlling the elevator to operate normally at a stable speed includes: When the direction parameter of the encoder indicates that the direction of the encoder is reversed, the phase sequence of the two orthogonal pulse signals of the encoder is swapped; When the direction parameter of the encoder indicates that the direction of the encoder is normal, the phase sequence of the two orthogonal pulse signals of the encoder is saved.

5. The transmission ratio detection method according to claim 1, characterized in that: Based on the first magnetic pole angle information and the second magnetic pole angle information, controlling the elevator to operate normally at a stable speed includes: If the current running direction of the elevator is the same as the set direction, the first magnetic pole angle information is used to correct the magnetic pole angle corresponding to the encoder when the zero pulse signal is valid; If the current running direction of the elevator is opposite to the set direction, the second magnetic pole angle information is used to correct the magnetic pole angle corresponding to the encoder when the zero pulse signal is valid.

6. The transmission ratio detection method according to claim 1, characterized in that: The determining the target pulse number of the traction wheel based on the second accumulated pulse between two adjacent zero-position pulse signals detected by the encoder comprises: Based on the encoder, a plurality of second accumulated pulses corresponding to a plurality of groups of two adjacent zero-position pulse signals in a single operation of the elevator are detected; wherein the single operation is a single operation process of the elevator from operation to stop; The plurality of second accumulated pulses are averaged to obtain a target pulse number of the traction wheel.

7. The transmission ratio detection method according to claim 1, characterized in that: The step of determining the transmission ratio between the traction wheel and the friction wheel of the encoder based on the target pulse number of the traction wheel and the pulse line number of the encoder comprises: The target pulse number of the traction wheel is divided by the pulse line number of the encoder to obtain the transmission ratio between the traction wheel and the friction wheel of the encoder.

8. A transmission ratio detection device, characterized in that: include: A first storage unit is used to detect a first accumulated pulse between two adjacent zero-position pulse signals based on an encoder installed on a traction wheel of the elevator when the elevator is controlled to run in a preset direction based on a given frequency during the self-learning process of the elevator; Based on the sign of the given frequency and the sign of the first accumulated pulse, the direction parameter of the encoder is determined and saved; wherein the zero position pulse signal is a pulse signal outputted by the traction wheel for each rotation; A second storage unit is used to control the elevator to run in a set direction opposite to the preset direction, and when the target zero position pulse signal is detected to be valid, save the current first magnetic pole angle information of the encoder, and when the target zero position pulse signal is detected to be invalid, save the current second magnetic pole angle information of the encoder; A control unit, configured to control the elevator to operate normally at a stable speed based on the direction parameter of the encoder, the first magnetic pole angle information, and the second magnetic pole angle information; A determination unit is used to determine the target pulse number of the traction wheel based on the second accumulated pulse between two adjacent zero-position pulse signals detected by the encoder during the normal operation of the elevator; and to determine the transmission ratio between the traction wheel and the friction wheel of the encoder based on the target pulse number of the traction wheel and the number of pulse lines of the encoder.

9. A transmission ratio detection device, characterized in that: include: CPU, memory, input and output interface, wired or wireless network interface, power supply; The memory is a short-term storage memory or a persistent storage memory; The central processor is configured to communicate with the memory, and execute instruction operations in the memory on a control plane function entity to perform the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium comprises instructions, and when the instructions are executed on a computer, the computer is caused to perform the method according to any one of claims 1 to 7.

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