CN110668271A - An elevator control system and method - Google Patents

Abstract

The invention relates to the technical field of electronic circuits, in particular to an elevator control system and method. It includes: a main control chip with on-chip memory; an off-chip memory connected to the main control chip; wherein the off-chip memory is used to save elevator backup parameters; a debugging operator is connected to the off-chip memory and the main control chip. Chip connection; wherein, the debugging operator is used to adjust elevator parameters; the elevator parameters include: initial parameters, current parameters, backup parameters and various intermediate parameters. Using the main control chip and the off-chip memory to connect the debugging operator, the elevator parameters can be set directly, and the fault point can be determined by extracting the stored parameters in the memory, or the elevator parameters can be restored directly. In this way, the elevator parameters can be set correctly, and the fault point can be eliminated to ensure the safety of the passengers.

Description

An elevator control system and method

technical field

The invention relates to the technical field of electronic circuits, in particular to an elevator control system and method.

Background technique

Elevator parameters include: functional parameters, IO port configuration parameters, shaft parameters, motor parameters, inverter parameters, control parameters, etc. The correct setting of elevator parameters is the basis for ensuring elevator safety and providing customers with a comfortable elevator experience.

For on-site maintenance personnel, elevator maintenance needs to be connected to the reading device to extract the parameter setting information of the faulty elevator or to troubleshoot manually; therefore, maintenance personnel need to be meticulous, careful and responsible for the maintenance work; if the work mood of the maintenance personnel Instability can lead to failures and safety hazards. For the current elevator maintenance, maintenance personnel need to bring output equipment when they go to work, in order to check elevator parameters and record fault points, and the output equipment brought every time they go out increases the weight of the elevator maintenance personnel. It will also cause the elevator parameters to be improperly set due to artificial search or recording of the fault point, or cause the elevator to fail to operate normally, and a little carelessness may cause faults and safety accidents.

SUMMARY OF THE INVENTION

In view of this, embodiments of the present invention provide an elevator control system and method to solve the problem of potential safety hazards caused by incorrect elevator parameter settings.

According to a first aspect, an embodiment of the present invention provides an elevator control system, including:

Main control chip with on-chip memory;

an off-chip memory connected to the main control chip; wherein the off-chip memory is used to save elevator backup parameters;

a debugging operator, connected with the off-chip memory and the main control chip; wherein, the debugging operator is used to adjust elevator parameters;

The elevator parameters include: initial parameters, current parameters, backup parameters and various intermediate parameters.

Using the main control chip and the off-chip memory to connect the debugging operator, the elevator parameters can be set directly, and the fault point can be determined by extracting the stored parameters in the memory, or the elevator parameters can be restored directly. In this way, the elevator parameters can be set correctly, and the fault point can be eliminated to ensure the safety of the passengers.

With reference to the first aspect, in a first implementation manner of the first aspect, the off-chip memory is connected to the main control chip and the debug operator through SPI or I ² C.

The off-chip memory is connected to the main control chip and the debug operator through SPI or I ² C to ensure normal communication, and multi-parameter backup is performed by connecting the off-chip memory and the main control chip.

With reference to the first aspect, in a second embodiment of the first aspect, the debug operator includes: a control chip is connected to the debug unit and the display unit, wherein the control chip is also connected to the off-chip memory and the main control chip, for Control the parameter settings of the elevator controller.

The use of the debugging operator can intuitively adjust the elevator parameters, improve the work efficiency of maintenance personnel, and save time and cost.

In conjunction with the first aspect, in a third implementation manner of the first aspect, the system further includes:

A serial communication interface, the serial communication interface is connected to at least one elevator control system, and is used for data exchange between elevator parameters.

Through the serial communication interface, parameters can be exchanged between multiple devices to ensure the stability of data transmission and the convenience of data transmission between multiple devices.

With reference to the first aspect, in a fourth implementation manner of the first aspect, an external input/output device connected to the serial communication interface is used for transferring, backing up and restoring elevator parameters.

External input/output devices, compatible with old systems, improve the utilization rate of the elevator control system.

According to a second aspect, an embodiment of the present invention provides an elevator parameter control method for an elevator control system, where the elevator control system is the elevator control system according to the first aspect or any one of the embodiments of the first aspect; Wherein, the method includes:

Get default parameters, current execution parameters and backup parameters;

Use default parameters, current execution parameters and backup parameters to perform adjacent comparisons to obtain differential data;

Use the difference data to adjust the elevator parameters.

Through the comparison between the data, it is possible to visually see the parameter differences, determine the parameter faults, improve work efficiency and reduce potential safety hazards.

With reference to the second aspect, before the step of acquiring the default parameters, the current execution parameters and the backup parameters described in the first embodiment of the second aspect, the method further includes:

Set hierarchical permissions so that users with different permissions can modify the corresponding parameters.

Use hierarchical permissions to prevent potential safety hazards caused by misoperation by others, improve security levels, and reduce potential safety hazards.

Description of drawings

In order to illustrate the specific embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

1 is a connection block diagram of an elevator control system according to an embodiment of the present invention;

Fig. 2 is a preferred elevator control system structural diagram A according to an embodiment of the present invention;

3 is a preferred elevator control system structural diagram B according to an embodiment of the present invention;

4 is a flowchart of an elevator control system according to an embodiment of the present invention;

5 is a structural diagram of a preferred elevator control method according to an embodiment of the present invention;

reference number

10-debugging operator; 20-main control chip; 30-off-chip memory; 40-serial communication interface; 50-input and output device; 60-elevator control system 2; 70-elevator control system 1;

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "first", "second" and "third" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance; the electronic The parameters and models of components are not limited to the values given in Figure 1-5.

In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

As shown in FIG. 1 , an embodiment of the present invention provides an elevator control system, including: a main control chip 20, which has an on-chip memory; an off-chip memory 30, which is connected to the main control chip 20; wherein, the off-chip memory 30 is used to save the elevator backup parameters; the debugging operator 10 is connected to the off-chip memory 30 and the main control chip 20; wherein, the debugging operator 10 is used to adjust the elevator parameters; the elevator parameters include: initial parameters, Current parameters, backup parameters and various intermediate parameters.

Using the main control chip 20 and the off-chip memory 30 to connect the debugging operator 10, the elevator parameters can be set directly, and the fault point can be determined by extracting the stored parameters in the memory, or the elevator parameters can be restored directly. In this way, the elevator parameters can be set correctly, and the fault point can be eliminated to ensure the safety of the passengers.

Specifically, the main control chip can be a micro-control chip with its own on-chip EEPROM, which is the core of the elevator control system (the main control chip 20), and can save the current parameters of the elevator in addition to the elevator control function implemented by the traditional elevator controller. and factory default parameters.

Utilize the off-chip memory 30 to make up for the expansion of the rewritable storage chip for the lack of EEPROM capacity of the main control chip; and connect and communicate with the main control chip through the SPI or I ² C interface, wherein the off-chip memory 30 is also through the SPI, or the I 2 C interface. ² C is connected to the main control chip 20 and the debugging operator 10 .

Optionally, the off-chip memory 30 may be at least one chip.

Optionally, the off-chip memory 30 is connected to the main control chip 20 and the debug operator 10 through SPI or I ² C to ensure normal communication, and multiple parameter backups are performed by connecting the off-chip memory 30 and the main control chip.

Specifically, the debugging operator 10 includes: a control chip connected to the debugging unit and a display unit, wherein the control chip is also connected to the off-chip memory 30 and the main control chip 20 for controlling parameter setting of the elevator controller. Among them, the debugging operator 10 is a simple debugging tool that realizes various parameter operations and debugging functions; the debugging operator 10 is installed on the elevator controller, which can realize the need not to carry other external elevator debugging tools during the elevator installation and maintenance process. Direct interface operation. For example, the debugging operator 10 can replace a hand-held simple keyboard operator, a hand-held liquid crystal keyboard operator, a PC, and the like.

By using the debugging operator 10, the elevator parameters can be adjusted intuitively, the work efficiency of the maintenance personnel is improved, and the time and cost are saved.

Specifically, the system further includes: a serial communication interface 40, wherein the serial communication interface 40 is connected to at least one elevator control system for data exchange between elevator parameters.

Optionally, you can use the elevator control system with UART interface to exchange data with another same elevator control system/external debugging tool/PC, and perform parameter transfer, parameter upload/download, and elevator testing through serial debugging. Among them, the UART interface is not limited to RS232, RS485, RS422, and can also be converted to USB, Bluetooth, WIFI, etc.

Through the serial communication interface, parameters can be exchanged between multiple devices to ensure the stability of data transmission and the convenience of data transmission between multiple devices.

Optionally, an external input/output device connected to the serial port communication interface is used to transfer, backup and restore elevator parameters.

Optionally, the external device can be a PC or an LCD keyboard operator, and used as an elevator debugging tool (but PC is generally used in the manufacturer, and LCD keyboard operator is generally used in the field), which is used to realize the parameters in this case through UART. Interface for transfer, backup and recovery.

External input/output devices, compatible with old systems, improve the utilization rate of the elevator control system.

Specifically, the display and debugging functions of the current elevator parameters, factory default parameters, various backup parameters, and various intermediate parameters can be realized through the debugging operator 10, and the display modes include binary, decimal, and hexadecimal display. The equipment can be digital tube, LCD.

Specifically, the current parameters of the elevator can be modified during the use of the elevator through the UART serial port or the debugging operator 10, and the corresponding operation authority needs to be obtained before modification. Make sure that the elevator parameters are set correctly. In addition, the present control system precisely controls the execution process of the elevator by controlling the elevator parameters.

The preferred implementation, as shown in Figure 2-3,

An elevator control system, comprising a debug operator 10 with a display component and an operation component connected to an off-chip memory 30 and a main control chip 20, the main control chip 20 connected to a serial communication interface 40, the serial communication interface 40 and the input/output Equipment connection, and or, elevator control system connection.

Specifically, the maintenance personnel operate the debugging operator 10, including extracting the elevator parameter settings stored in the main chip or the off-chip memory 30, and using the setting buttons of the debugging operator 10 to set the elevator parameters, wherein the hardware that realizes the setting function can be It is an ordinary mechanical button or a touch button through touch sensing.

As shown in Figure 2, by connecting the external output device through the serial communication interface 40, the parameters of the elevator control system can be set, and the input/output device can also be used to obtain the setting parameters of the current elevator control system, and the current system can be read data. , backup.

As shown in Figure 3, the elevator control system 260 is connected through the serial communication interface 40, and the serial communication interface 40 is used for data exchange, wherein the content of the data exchange can be part of the elevator parameters, or all the elevator parameters, but in the process of In the process of data exchange, it is necessary to encrypt and verify the parameter data to ensure the safety of elevator parameters. The use of serial communication to realize the old system to the new system does not need to directly connect and upgrade the additional connection hardware equipment, which improves the maintenance efficiency, and the maintenance personnel can also configure the elevator parameters through serial communication before leaving the factory. , when the elevator control system 170 is sending the data transfer command to the elevator control system 260 as the sending end, the elevator control system 260 as the data receiver needs to feed back the execution result to the elevator control system 170 after receiving the parameter data to ensure that the data is transferred. completeness.

As shown in FIG. 4 , an embodiment of the present invention provides an elevator parameter control method for an elevator control system, where the elevator control system is the elevator control system described in the first aspect or any one of the embodiments of the first aspect. ; wherein, the method includes:

S1, obtain default parameters, current execution parameters and backup parameters;

S2, use default parameters, current execution parameters and backup parameters to perform adjacent comparisons to obtain differential data;

S3, using the difference data to adjust the elevator parameters.

Through the comparison between the data, it is possible to visually see the parameter differences, determine the parameter faults, improve work efficiency and reduce potential safety hazards.

Among them, the default parameters and current execution parameters or current execution parameters and backup parameters can quickly lock the problem and fault point, which is conducive to the rapid maintenance of maintenance personnel.

Specifically, before the step of obtaining the default parameters, the current execution parameters and the backup parameters, the steps further include:

Set hierarchical permissions so that users with different permissions can modify the corresponding parameters.

Use hierarchical permissions to prevent potential safety hazards caused by misoperation by others, improve security levels, and reduce potential safety hazards.

Preferably, using the elevator control system and control method, it can be achieved:

Self-checking of elevator parameters, the elevator control system automatically checks and corrects the current elevator parameters and the parameters written in the serial port. When the parameter is set, it will automatically refuse to start the elevator and stop the elevator after reporting the parameter setting fault code, and record the group and sub-number of the parameter error at the same time, which is convenient for the maintenance personnel to use and check.

Preferably, the parameters of the elevator control system are the guarantee for the elevator to realize various functions and safety, and cannot be freely opened to unqualified personnel for modification, let alone malicious modification by people with ulterior motives or competitors.

The system has strict hierarchical authority for parameter modification. Personnel with different levels of qualifications have different levels of passwords, and different levels of passwords have different parameter operation authority. For example: no password is allowed to view parameters - the primary password is only allowed to view parameters (can be set to be held by the user) - the intermediate password can view all parameters but can only modify the parameters related to operation and debugging (can be set to be held by maintenance personnel) Yes) - advanced password can view and modify all parameters but cannot modify passwords at all levels (can be set to be held by professional agents and installers) - super password can view and modify all parameters and modify passwords at all levels (can be set It is held by elevator manufacturers). Ensure the safety of elevator parameters.

Priority, when the elevator control board is replaced on site, use a standard data cable used in the elevator control system through the on-board debugging operator 10 and UART interface that comes with the controller to switch the front (old) and rear (new) ) Connect the two control boards, and execute the parameter transfer instruction on the onboard debug operator 10 of the old board to transfer and copy all or part of the grouping parameters on the old board to the new board through the UART interface. During parameter transfer, only the required group can be transferred or all the parameters of the entire controller can be transferred according to specific needs. In order to prevent data transmission errors, the transmission process has encryption and verification functions. After the new board receives the data, it will be verified first. If the data judgment result is correct, it will be written into its own memory and request the next data. If the data is wrong, it will return Error message and request to resend current data. The tool required for the transfer is only a standard data cable (borrowing the data cable of the digital display board in the car), and there is no need for the operator to carry any elevator debugging tools such as a PC or a handheld LCD keyboard operator.

First, the corresponding debugging tools must be equipped with the elevator maintenance and warranty. If there are multiple elevator brands under maintenance and warranty, the corresponding handheld debugging tools must be equipped for each brand of elevator. However, there is no need to carry the corresponding dedicated hand-held simple or LCD keyboard operator when using this system to repair and protect the elevator on site. The on-board debugging operator 10 of the present case can be used alone to complete all elevator debugging and control functions (including parameter debugging functions) in the elevator installation and maintenance process. For example, it can be used to adjust parameters related to elevator speed or comfort during elevator installation, and can be used for maintenance and debugging control during elevator maintenance.

Preferably, the embodiment of the present invention provides an elevator control method, which may use the debugging operator 10 to compare parameters: compare the current parameters with the factory default parameters with the debugging operator 10, and display all differences. After executing the parameter comparison command on the debug operator 10, press the button on the debug operator 10 when viewing the parameters, and the next parameter with a difference will be displayed (usually, the current parameter is displayed first, and then the compared parameter is displayed). If If there is no difference after this group number, it will stop at the last parameter of this group. This parameter comparison function can not only compare the current parameters with the factory default parameters, but also compare the current parameters with the specified backup parameters.

Optionally, compare parameters through UART: with the corresponding handheld LCD keyboard operator of this system, the current elevator parameters, factory default parameters, and a backup parameter can be sent to the LCD keyboard through UART, and the comparison is on the LCD keyboard. The two parameters are displayed, and the differences are marked with different colors, and users are allowed to modify the parameters immediately on this comparison interface.

Preferably, the elevator parameters are backed up and restored: usually, a copy of the current parameters of the elevator control system has been set in the elevator controller when the elevator leaves the factory. In addition to the current parameters in this system, a factory default parameter can also be saved in the MCU on-chip EEPROM so that the elevator can restore the factory parameters at any time after leaving the factory. In addition, all current parameters in this system can be backed up to off-chip mass storage, and multiple copies of parameters can be backed up; these off-chip backup parameters can be grouped or all restored to current parameters. The MCU off-chip memory 30 has the function of making multiple backups of elevator parameters, which provides great convenience for some on-site applications. When new requirements are met and parameters need to be debugged on site, some corresponding elevator parameters need to be adjusted appropriately. Using this backup/restore function, multiple copies of elevator parameters at different stages can be backed up inside the controller and restored at any time when needed. or compare.

Optionally, use the UART interface to backup and restore the parameters: with the corresponding handheld LCD keyboard operator of the system, the current elevator parameters, factory default parameters, and MCU off-chip backup parameters can be uploaded to the LCD keyboard or PC through the UART interface. Save the parameters in the elevator controller, and download the required parameters from the handheld LCD keyboard operator or PC to the elevator controller for use when needed.

In this system, there are large-capacity EEPROM inside and outside the MCU, and with the on-board debugging operator 10, the parameter backup/restore function can be easily realized, especially suitable for backing up the current elevator parameters before modifying or downloading parameters on site for emergencies. ; No need to carry an additional LCD keyboard operator, only need to execute the relevant instructions on the debugging operator 10 to realize the backup and recovery of elevator parameters, and the time required for backup/restore the entire parameter is about 1S.

This system saves multiple copies of elevator parameters with the help of off-chip large-capacity memory. When needed, select a backup parameter to restore to the current parameters. The entire set of parameters can be restored or grouped according to requirements, from different backup parameters. Choose to restore different groups of parameters to the current parameters, which is very flexible to use.

When the elevator controller needs to be replaced on site, borrow a standard wiring on the digital display board in the car, execute the relevant instructions on the onboard debugging operator 10 of the old board, and instantly transfer and copy the parameters on the old board to the The new board eliminates the complicated operation of retrieving the parameters of the old board on the PC and downloading them to the new board, and also does not need to upload the parameters of the old board to the LCD keyboard with the help of the handheld LCD keyboard debugger, save and then download to the LCD keyboard. The process of going to the new board saves time and trouble.

On the debugging operator 10, the parameter comparison between the current parameter and a certain backup parameter can be performed, and the difference point of the parameters between the two parties can be found out accurately and quickly, and on-site fault tracking and parameter inspection can be performed.

The parameter self-check of this system can avoid many faults caused by incorrect parameter setting, and locate the parameter problem by reporting the fault of parameter setting error.

The parameter classification password control function of this system can protect parameters from being modified by unrelated outsiders, and can also assign different modification authority to personnel with different powers and responsibilities, and perform hierarchical authorization for special equipment such as elevators.

By adding the debugging operator 10, various parameter operation functions such as complete viewing, modification, comparison, backup, restoration, transfer, and debugging of all elevator parameters can be realized. Using the UART interface to upload/download parameters on this system can not only do the parameter backup of the elevator, but also copy the parameters of one elevator to another/multiple elevators in different places.

A preferred embodiment, as shown in Figure 5;

It may be that the I/O device 50 is connected to the elevator control system 170 , wherein the elevator control system is also connected to the elevator control system 260 .

The elevator control system 170 receives the signal of the input and output device 50, but before receiving the signal of the input and output device 50, the elevator control system 170 needs to judge the received signal command, and judge whether the received electrical signal is the operation corresponding to the authority Electric signal to ensure the safety of parameter setting. When the electric signal belongs to the electric signal of the corresponding authority, the current elevator parameters can be obtained and set; when the elevator control system needs to be maintained and protected, the memory The factory data is retrieved from the computer or the backup data is retrieved from the off-chip memory 30 for comparison with the parameters currently set by the elevator, and the comparison result is output on the output device and the debugging operator 10. The maintenance personnel can quickly locate the fault point through the comparison result. The comparison result can be a fault point or a fault code; during maintenance, the current elevator parameters can also be updated through the elevator parameters backed up in the memory to ensure the efficiency of elevator maintenance. Hardware failure); by connecting the elevator control system 260, the parameter settings in the elevator control system 170 can be transplanted to the elevator control system 260 to ensure fast data update and transplant, and the debugging operator 10 can be used to perform the elevator operation without using external equipment. The transfer setting of parameters improves the maintenance efficiency of the elevator and ensures the safety and reliability of the elevator.

Obviously, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation manner. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. However, the obvious changes or changes derived from this are still within the protection scope of the present invention.

Claims (7)

1. an elevator control system, is characterized in that, comprises: Main control chip with on-chip memory; an off-chip memory connected to the main control chip; wherein the off-chip memory is used to save elevator backup parameters; a debugging operator, connected with the off-chip memory and the main control chip; wherein, the debugging operator is used to adjust elevator parameters; The elevator parameters include: initial parameters, current parameters, backup parameters and various intermediate parameters. 2 . The system according to claim 1 , wherein the off-chip memory is connected to the main control chip and the debug operator through SPI or I ² C. 3 . 3. The system according to claim 2, wherein the debug operator comprises: a control chip is connected to a debug unit and a display unit, wherein the control chip is also connected to the off-chip memory and the main control chip, using It is used to control the parameter settings of the elevator controller. 4. The system according to claim 1 or 3, wherein the system further comprises: A serial communication interface, the serial communication interface is connected to at least one elevator control system, and is used for data exchange between elevator parameters. 5 . The system according to claim 4 , further comprising: an external input/output device connected to the serial communication interface for transferring, backing up and restoring elevator parameters. 6 . 6. An elevator parameter control method for an elevator control system, wherein the elevator control system is the elevator control system according to claim 5; wherein, the method comprises: Get default parameters, current execution parameters and backup parameters; Use default parameters, current execution parameters and backup parameters to perform adjacent comparisons to obtain differential data; Use the difference data to adjust the elevator parameters. 7. The method according to claim 6, wherein before the step of acquiring default parameters, current execution parameters and backup parameters, further comprising: Set hierarchical permissions so that users with different permissions can modify the corresponding parameters.

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