Elevator control system and method, electronic device, storage medium

Abstract

The embodiment of the application relates to the technical field of control, and discloses an elevator control system and method, an electronic device and a storage medium. The system comprises: M acquisition boards used for acquiring floor door locking switch state information; N position sensors used for acquiring car position information; N car roof safety plates used for acquiring car door switch state information of a car; N first control cabinets used for controlling corresponding cars to stop running according to received first control signals; and a second control cabinet used for, in the case that N cars are normally running and it is monitored that a floor door and / or a car door is in an abnormal opening state, detecting whether a first target car is in a first target area according to received car position information, so as to output a first control signal to a first control cabinet corresponding to the first target car in the N first control cabinets, or output the first control signal to all the N first control cabinets. The running efficiency of the car is improved while the safety is ensured.

Description

Technical Field

[0001] This application relates to the field of control technology, and in particular to an elevator control system and method, electronic equipment, and storage medium. Background Technology

[0002] An elevator is a power-driven electromechanical device that uses a car with rigid guide rails or steps running along a fixed route to move people or goods up and down or sideways, such as passenger (freight) elevators. It generally includes components such as a machine room, shaft, pit, car, and floors.

[0003] Normally, elevator doors open only when the car reaches a floor and is level with the floor door. However, in case of a malfunction, the car or floor door may open before the car is level with the floor door. Continuing to operate the elevator in this situation poses a safety hazard. Therefore, to ensure the safety of passengers and passengers, the current control strategy is to immediately stop the elevator or prevent it from restarting if the car or floor door opens before the car is level with the floor door.

[0004] However, when multiple cars are operating in the same hoistway, the above control strategy will no longer be suitable, as it will severely slow down the operating efficiency of the cars. Summary of the Invention

[0005] This application provides an elevator control system and method, electronic device, and storage medium, which at least helps to improve the operating efficiency of the elevator car while ensuring safety.

[0006] According to some embodiments of this application, one aspect of this application provides an elevator control system for controlling the operation of N cars located in the same shaft, where N is a positive integer greater than 1. The system includes: M acquisition boards, each corresponding to one of the M floors traversed by the shaft, for acquiring the landing door locking / unlocking status information of the corresponding floors, where M is a positive integer greater than 2; N position sensors, each disposed on a different car among the N cars, for acquiring the car position information of the car; N car top safety plates, each disposed on a different car among the N cars, for acquiring the car door opening / closing status information of the car; N first control cabinets, each corresponding to one of the N cars, for controlling the corresponding car to stop operation and enter a safe state upon receiving a first control signal; and second control cabinets, each connected to the M acquisition boards, the N position sensors, the N car top safety plates, and the N first control cabinets, for receiving the landing door locking / unlocking status information acquired by the M acquisition boards and the N... The system collects the car door opening / closing status information from the safety panel on the car top and the car position information from the N position sensors. Under normal operation of the N cars, it monitors whether a landing door and / or car door is in an abnormal opening state based on the received landing door locking switch status information and car door opening / closing status information. If an abnormal opening state is detected, it checks whether a first target car is in a first target area based on the received car position information. If the first target car is in the first target area, it outputs a first control signal to the first control cabinet corresponding to the first target car among the N first control cabinets. If the first target car is not in the first target area, it outputs the first control signal to all N first control cabinets. The first target car is the car in an abnormal opening state and / or the car closest to the landing door in an abnormal opening state. The first target area is the area where the distance from the first target car to the landing does not exceed a first preset distance.

[0007] According to some embodiments of this application, another aspect of this application provides an elevator control method applied to a second control cabinet in the elevator control system described above. The method includes: receiving landing door locking switch status information collected by M acquisition boards, car door opening and closing status information collected by N car top safety boards, and car position information collected by N position sensors; under normal operation of the N cars, monitoring whether a landing door and / or car door is in an abnormal opening state based on the received landing door locking switch status information and car door opening and closing status information; if an abnormal opening state is detected, detecting whether a first target car is in a first target area based on the received car position information; the first target... The car is the car in an abnormally open state and / or the car closest to the landing door in an abnormally open state; the first target area is the area where the distance from the first target car to the landing does not exceed a first preset distance; when the first target car is in the first target area, a first control signal is output to the first control cabinet corresponding to the first target car among the N first control cabinets, so that the first control cabinet receiving the first control signal controls the first target car to stop running; when the first target car is not in the first target area, the first control signal is output to all N first control cabinets, so that the first control cabinet receiving the first control signal controls the N cars to stop running.

[0008] The technical solution provided in this application has at least the following advantages:

[0009] In the elevator control system, M data acquisition boards corresponding one-to-one with the M floors traversed by the shaft, N position sensors installed on different cars in the N cars, and N car top safety plates installed on different cars in the N cars are set up. This allows for the accurate acquisition of information on the locking / unlocking status of the landing doors on each floor, the opening / closing status of the car doors in each car, and the car position information of each car. This information is then transmitted to the second control cabinet through the connection between the M data acquisition boards, N position sensors, N car top safety plates, and the second control cabinet. The second control cabinet then... The system receives information monitoring the abnormal opening status of doors on each floor and car doors. Based on a set first target area, it decides whether to stop all N cars or only some of them. Control is then achieved by outputting a first control signal to the corresponding first control cabinet. This eliminates the need to stop all cars in the hoistway upon an abnormal door opening, thus reducing the probability of car stoppages, increasing car uptime, and improving car efficiency. Furthermore, it ensures safety by stopping the corresponding car in case of an abnormal door opening. This approach improves car operating efficiency while ensuring safety. Attached Figure Description

[0010] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0011] Figure 1 This is a schematic diagram of a structure of an elevator control system provided in one embodiment of this application;

[0012] Figure 2 This is a simplified schematic diagram of the first target area involved in an elevator control system provided in one embodiment of this application;

[0013] Figure 3 This is a schematic diagram of the second target area, the third target area, and the fourth target area involved in an elevator control system provided in one embodiment of this application;

[0014] Figure 4 This is a schematic diagram of another structure of the elevator control system provided in one embodiment of this application;

[0015] Figure 5 This is a schematic diagram of another structure of the elevator control system provided in one embodiment of this application;

[0016] Figure 6 This is a flowchart of an elevator control method provided in one embodiment of this application;

[0017] Figure 7 This is a schematic diagram of the structure of an electronic device provided in one embodiment of this application. Detailed Implementation

[0018] As can be seen from the background technology, existing elevator safety control strategies can severely slow down the operating efficiency of elevator cars in scenarios where multiple cars are operating in the same shaft.

[0019] Analysis revealed that the above problem stems from at least the following: In a standard single-shaft, single-car system, the elevator must stop or be unable to start when any landing door or car door in the shaft is opened. However, when two or more cars share a shaft, the landing door locking signal is shared. Since the landing door is linked to the car door, the car door locking signal is also shared in a sense. Therefore, if a car door or landing door opens before the car is level with the landing, all cars in the same shaft will stop. Even if some cars are in a safe state, they will still stop due to the opening of other cars or landing doors, resulting in reduced overall car travel time and slowing down the elevator's permissible efficiency.

[0020] To address the aforementioned technical problems, this application provides an elevator control system and method. It provides N first control cabinets, each corresponding to one of the N elevator cars, enabling precise control of each car through the corresponding first control cabinet. Simultaneously, it provides a second control cabinet connected to M data acquisition boards, N position sensors, N car top safety plates, and the N first control cabinets. This second control cabinet receives information from the M data acquisition boards, N position sensors, and N car top safety plates, makes relevant decisions, and outputs control signals to the N first control cabinets, thereby achieving precise control of the N cars. The second control cabinet receives information and makes decisions without requiring connections between the first control cabinets and other structures to provide information to each first control cabinet individually. This simplifies the internal connections of the system and reduces implementation difficulty and cost. Furthermore, the second control cabinet monitors abnormal door opening states based on received information and, through a set first target area, decides whether to stop all N cars or only some of them. It then controls the cars by outputting a first control signal to the corresponding first control cabinet. This eliminates the need to stop all cars in the hoistway upon an abnormal door opening, thus reducing the probability of car stoppages, increasing car uptime, and improving car efficiency. In the event of an abnormal door opening, it can control the corresponding car to stop, ensuring safety. This approach improves car operating efficiency while ensuring safety.

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the various embodiments of this application will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been presented in the various embodiments of this application to enable readers to better understand this application. However, the technical solutions claimed in this application can be implemented even without these technical details and various changes and modifications based on the following embodiments.

[0022] The division of the following embodiments is for ease of description and should not constitute any limitation on the specific implementation of this application. The various embodiments can be combined with and referenced by each other without contradiction.

[0023] One embodiment of this application provides an elevator control system for controlling the operation of N cars located in the same shaft, where N is a positive integer greater than 1. Its structure is as follows: Figure 1 As shown, it includes:

[0024] M acquisition boards 100, each corresponding to one of the M floors the shaft passes through, are used to collect the door lock status information of the corresponding floors, where M is a positive integer greater than 2.

[0025] N position sensors 200 are installed on different cars in the N cars to collect the car position information of the car.

[0026] N car top safety plates 300 are respectively installed on different cars in N cars to collect the car door opening and closing status information of the car.

[0027] N first control cabinets 400 correspond one-to-one with N cars. They are used to control the corresponding car to stop running and enter a safe state after receiving the first control signal.

[0028] The second control cabinet 500 is connected to M acquisition boards 100, N position sensors 200, N car top safety plates 300, and N first control cabinets 400 respectively. It receives landing door locking switch status information collected by the M acquisition boards 100, car door opening / closing status information collected by the N car top safety plates 300, and car position information collected by the N position sensors 200. Under normal operation of the N cars, it monitors whether there are any landing doors and / or car doors in an abnormal opening state based on the received landing door locking switch status information and car door opening / closing status information. If any abnormal opening state is detected, it will... In the given state, based on the received car position information, it is detected whether the first target car is in the first target area. If the first target car is in the first target area, a first control signal is output to the first control cabinet 400 corresponding to the first target car among the N first control cabinets 400. If the first target car is not in the first target area, the first control signal is output to all N first control cabinets 400. The first target car is the car in an abnormal door opening state and / or the car closest to the landing door in an abnormal door opening state; the first target area is the area whose distance to the landing does not exceed a first preset distance.

[0029] in, Figure 1 The dashed box shown represents the elevator car.

[0030] This embodiment limits the specific value of the first preset distance to the smaller of the floor height or the car height. The specific application value can be set below this maximum value according to actual needs. It is understood that the size of the first preset distance reflects the degree of improvement in operating efficiency; the larger the first preset distance, the less likely it is that all cars will stop running, resulting in higher operating efficiency. Therefore, when safety is paramount, the first preset distance can be set to a smaller value; when operating efficiency is paramount, the first preset distance can be set to a larger value. Furthermore, different first preset distances can be set according to different time periods.

[0031] In some cases, for elevator control systems installed in office buildings, the first preset distance can be set to a larger value during peak hours to improve elevator operating efficiency, thereby more effectively meeting users' elevator needs and alleviating elevator congestion. During other times, the first preset distance can be set to a smaller value to better ensure passenger safety. Furthermore, because more people are paying attention to elevators during peak hours, elevator malfunctions are more easily detected, making it easier to ensure elevator safety. Setting the first preset distance to a larger value during peak hours has little impact on elevator safety. However, during other times, elevator malfunctions are less likely to be detected, and the resulting safety hazards are greater. Reducing the first preset distance during these times would be more beneficial for safety.

[0032] In some cases, historical elevator usage data and questionnaire results can be analyzed to determine the trend of elevator demand over time. Based on this trend, a corresponding function for determining the value of a first preset distance can be provided. This ensures that the first preset threshold better aligns with elevator demand, thus achieving a better balance between elevator operating efficiency and safety.

[0033] Of course, the above is only a specific example of how to determine the value of the first preset distance. In other cases, the first preset distance can also be determined in other ways, which will not be elaborated here.

[0034] In this embodiment, an abnormal door opening state refers to a door opening state other than the normal door opening state. The normal door opening state is the state corresponding to the door opening when the car is level with the landing. The first target car being located in the first target area means that the lower surface of the first target car is located within the first target area. See details... Figure 2 The upper car is located in the first target area, meaning the lower surface A of the upper car is within the first target area (the shaded area in the diagram). The distance to the landing door refers to the distance to the ground level of the landing door. Figure 2 For example, the distance to the door of the Mth floor is the distance to the plane containing the bottom surface B of the door of the Mth floor. There exists a corresponding first target area for each door of each floor.

[0035] To facilitate a better understanding of the implementation logic of the second control cabinet 500 described in the above embodiments by those skilled in the art, the following will be combined with... Figure 2 Please provide an explanation.

[0036] refer to Figure 2Taking an elevator control system involving two cars—an upper car and a lower car—as an example, the control signals output by the second control cabinet for controlling the opening and closing of the upper car's doors are Upper UDC_I and Upper UDC_O. The two ends (I, O) of these control signals serve as the overall door lock signal for the upper car elevator. Similarly, the control signals output by the second control cabinet for controlling the opening and closing of the lower car's doors are Lower DDC_I and Lower DDC_O. The two ends (I, O) of these control signals serve as the overall door lock signal for the lower car elevator.

[0037] When the second control cabinet 500 detects that the upper car has moved into the first target area (i.e., the area indicated by the shaded part in the figure) based on the car position information collected by the position sensor 200 installed on the upper car, and detects that the upper car door signal is disconnected and / or the landing door signal of the landing station where the upper car is located is disconnected (i.e., the upper car and / or the landing door is in an abnormal opening state) based on the landing door locking switch status information collected by the acquisition board 100 and / or the car door opening and closing information collected by the car top safety plate 300, it outputs the first control signal to the first control cabinet 400 corresponding to the upper car.

[0038] When the second control cabinet 500 detects that the upper car has moved into the first target area (i.e., the area indicated by the shaded part in the figure) based on the car position information collected by the position sensor 200 installed on the lower car, and detects that the lower car door signal is disconnected and / or the landing door signal of the landing station where the lower car is located is disconnected (i.e., the lower car and / or the landing door is in an abnormal opening state) based on the landing door locking switch status information collected by the acquisition board 100 and / or the car door opening and closing information collected by the car top safety plate 300, it outputs a first control signal to the first control cabinet 400 corresponding to the lower car.

[0039] When the second control cabinet 500 detects that the upper car has moved outside the first target area (i.e., the area indicated by the shaded part in the figure) based on the car position information collected by the position sensor 200 installed on the upper car, and detects that the upper car door signal is disconnected and / or the landing door signal of the landing station where the upper car is located is disconnected (i.e., the upper car and / or the landing door is in an abnormal opening state) based on the landing door locking switch status information collected by the acquisition board 100 and / or the car door opening and closing information collected by the car top safety plate 300, then it outputs the first control signal to the first control cabinet 400 corresponding to the upper car and the lower car (i.e., outputs the first control signal to the first control cabinet 400 corresponding to all cars).

[0040] When the second control cabinet 500 detects that the upper car has moved outside the first target area (i.e., the shaded area in the figure) based on the car position information collected by the position sensor 200 installed on the upper car, and detects that the lower car door signal is disconnected and / or the landing door signal of the landing station where the lower car is located is disconnected (i.e., the lower car and / or the landing door is in an abnormal opening state) based on the landing door locking switch status information collected by the acquisition board 100 and / or the car door opening and closing information collected by the car top safety plate 300, then it outputs the first control signal to the first control cabinet 400 corresponding to the upper car and the lower car (i.e., outputs the first control signal to the first control cabinet 400 corresponding to all cars).

[0041] Therefore, the first target area is equivalent to a defined area where the door lock operates independently. If the car moves into this area and an abnormal door opening occurs, the first control signal is only output to the cars within this area. If all cars are outside this area and an abnormal door opening occurs, the first control signal is output to all cars. In other words, by setting a first target area and determining whether to stop all cars or a specific car based on whether the first target car is within it, compared to stopping all cars upon door opening, the car's operating time is longer, and the ability to stop cars ensures safety, thus ensuring both car safety and operational efficiency.

[0042] It should be noted that the location of the first target area is related to the location of the floor door. In some cases, the location of the floor door can be a pre-input parameter; or it can be obtained by self-learning and debugging based on the actual floor location.

[0043] In some embodiments, the second control cabinet 500 is further configured to monitor whether the second target car has entered the second target area and its speed is less than the first speed threshold based on the received car position information. If the second target car is detected to have entered the second target area and its speed is less than the first speed threshold, the second control cabinet 500 outputs a second control signal to the first control cabinet 400 corresponding to the second target car. The first control cabinet 400 is further configured to control the corresponding car to keep running based on the received second control signal after receiving the second control signal. The second target car is the car among N cars that is responding to the user's elevator command. The second target area is the area where the distance between the second target car and the target floor to be reached before reaching the target floor indicated by the user's elevator command does not exceed a second preset distance.

[0044] In this embodiment, "responding to a user's elevator command" means either "currently heading to the floor the user was on before boarding the elevator" or "currently heading to the floor the user is about to board the elevator." The target floor can be either the floor the user was on before boarding the elevator or the floor the user is about to board the elevator.

[0045] This embodiment sets a maximum value for the second preset distance based on the allowable leveling range and a maximum value for the first speed threshold based on the leveling speed requirements. These values ​​can be set within a range below the maximum values ​​according to actual needs. It is understood that the magnitude of the second preset distance and the first speed threshold reflects the leveling response efficiency. A larger second preset distance will instruct the car to continue running earlier, thus achieving leveling faster and with higher efficiency; a larger first speed threshold will prevent the elevator from stopping earlier, thus achieving leveling faster and with higher efficiency. Therefore, the second preset distance and the first speed threshold can be set according to the current requirements for leveling efficiency and / or elevator operating efficiency.

[0046] In this way, by outputting a second control signal before reaching the target floor and achieving leveling, the car can maintain its operation, thereby better leveling with the landing door of the target floor and ensuring safety.

[0047] It should be noted that the terms "first" and "second" in "second control signal" primarily distinguish control signals with different functions. The first control signal is mainly used to stop the corresponding car, while the second control signal is mainly used to keep the corresponding car running. Understandably, in some cases, the first control signal might be an active control signal output from the second control cabinet 500 to the first control cabinet 400, while the second control signal might be an inactive control signal output from the second control cabinet 500 to the first control cabinet 400; conversely, in other cases, the first control signal might be an inactive control signal output from the second control cabinet 500 to the first control cabinet 400, while the second control signal is an active control signal output from the second control cabinet 500 to the first control cabinet 400, and so on. These variations will not be elaborated upon here.

[0048] It is understandable that during the operation of the elevator car, people or objects will continuously enter and exit, causing changes in the elevator's load capacity. This may lead to the car shifting from being level with the landing, resulting in a situation where it is no longer level. To solve this problem, in some embodiments, the second control cabinet 500 is also used to monitor whether the second target car has entered a third target area and whether its speed is less than a second speed threshold, based on the received car position information, after the second target car arrives at the target landing indicated by the user's elevator command and before leaving the target landing. If the second target car is detected to have entered the third target area and its speed is less than the second speed threshold, a second control signal is output to the first control cabinet 400 corresponding to the second target car; the third target area is the area where the distance to the landing door of the target landing does not exceed a third preset distance.

[0049] In this way, after leveling, if a person or object enters or leaves the car, causing a change in the overall mass of the car and resulting in car offset, the second control cabinet 500 will output a second control signal, which will then cause the car to start running through the corresponding first control cabinet 400, achieving leveling again, which helps to further improve the safety of the elevator.

[0050] It should be noted that in this embodiment, the maximum value of the third preset distance is limited based on the allowed releveling length, and the maximum value of the second speed threshold is limited based on the allowed releveling speed. These values ​​can be set below the maximum values ​​according to actual needs. It is understood that the magnitude of the third preset distance and the second speed threshold reflects the selection of releveling conditions. The third preset distance and the second speed threshold can be set by comprehensively considering information such as releveling requirements and costs.

[0051] In some embodiments, the second control cabinet 500 is further configured to monitor whether the second target car has entered a fourth target area and its speed is less than a third speed threshold, based on the received car position information, after the second target car arrives at the target floor indicated by the user's elevator instruction and before leaving the target floor. If the second target car is detected to have entered the fourth target area and its speed is less than the third speed threshold, the second control cabinet 500 outputs a second control signal to the first control cabinet 400 corresponding to the second target car. The fourth target area is the area where the distance to the landing door of the target floor does not exceed a fourth preset distance.

[0052] In other words, before leaving the target floor, the second control cabinet 500 sends a second control signal to the first control cabinet 400 in advance, so that the second target car can enter the running state in advance when leaving the target floor, speeding up the efficiency of the car leaving the target floor and improving the user experience.

[0053] It should be noted that in this embodiment, the fourth preset distance is limited to a maximum value based on the pre-operation range, and the third speed threshold is limited to a maximum value based on the pre-operation allowable speed. These values ​​can be set below the maximum values ​​according to actual needs. It is understood that the magnitudes of the fourth preset distance and the third speed threshold reflect the pre-operation. The third preset distance and the second speed threshold can be set by comprehensively considering information such as re-leveling requirements and costs.

[0054] It should also be noted that the leveling, re-leveling, and early operation operations involved in the above embodiments can also be implemented under user instructions. For example, after the user issues a leveling command, the car will output a second control signal to the first control cabinet 400 corresponding to the second target car when it detects that the second target car has entered the second target area and its speed is less than the first speed threshold. These will not be elaborated on here.

[0055] To help those skilled in the art better understand the leveling, re-leveling, and advance operation described in the above embodiments, the following will be combined with Figure 3 Let's illustrate with examples.

[0056] During the process of a car transporting passengers to a target floor, suppose a car travels to... Figure 3 Within the second target area 1 shown, when the second control cabinet 500 receives the car door opening command (leveling) and detects that the car speed is ≤0.8m / s (i.e. the first speed threshold), it will output a second control signal to the corresponding first control cabinet 400. At this time, if the car door is detected to be open and / or the landing door of the landing station near which the car is close is opened, the second control signal will cause the car to continue running in order to achieve leveling faster.

[0057] During the process of a car stopping at a target floor for passengers to leave, assuming that the car shifts upward and is located in the third target area 2 due to the departure of passengers, and the second control cabinet 500 receives the car door opening and re-leveling command and detects that the car speed is ≤0.3m / s (i.e., the second speed threshold), it will output a second control signal to the corresponding first control cabinet 400. At this time, if the car door is detected to be open and / or the floor door of the floor the car is close to is opened, the second control signal will cause the car to continue running in order to restore the leveling state and achieve re-leveling.

[0058] After a passenger leaves a car, assuming the car is located within the fourth target area 3, and the second control cabinet 500 receives the car's elevator preparation operation command and detects that the car's speed is ≤0.3m / s (i.e., the third speed threshold), if the car door is detected to be open and / or the landing door of the floor the car is close to is opened, a second control signal will be output to the corresponding first control cabinet 400, thereby causing the car to start preparing for operation in advance.

[0059] It is understandable that elevators inevitably require maintenance and emergency power-up, meaning that control implementation in these situations also needs to be considered. Therefore, in some embodiments, N first control cabinets 400 are further configured to generate bypass signals based on user instructions; the second control cabinet 500, upon receiving bypass signals generated by the N first control cabinets 400 and receiving abnormal status information, monitors whether a landing door and / or car door is in an abnormal opening state based on received landing door locking switch status information and car door opening / closing status information. If an abnormal opening state is detected, it detects whether a first target car is in a first target area based on received car position information. If the first target car is in the first target area, it outputs a first control signal to the first control cabinet 400 corresponding to the third target car; if the first target car is not in the first target area, it outputs the first control signal to the first control cabinet 400 corresponding to the fourth target car.

[0060] In some embodiments, the bypass signal includes a landing door bypass signal and / or a car bypass signal. That is, bypassing the landing door and / or the car can be flexibly controlled, which is beneficial for better car maintenance, emergency powering, etc., and thus better maintenance of the elevator control system.

[0061] In some embodiments, the abnormal status information received by the second control cabinet 500 includes maintenance status information of the corresponding car generated by N car top safety plates and emergency energizing status information of the corresponding car generated by N first control cabinets. In other words, it allows for flexible control of maintenance and emergency energizing of each car, facilitating better independent maintenance and emergency energizing of each car, thus improving the maintenance of the elevator control system.

[0062] It should be noted that the maintenance or emergency electric signal can target one or more cars, meaning that the abnormal status information received by the second control cabinet 500 may come from some of the bypass signals of the first control cabinet 400.

[0063] In some embodiments, such as Figure 4 As shown, each first control cabinet 400 has an emergency electric switch and a bypass switch, thereby generating emergency electric status information and / or bypass signal after the user operates the emergency electric switch and / or bypass switch.

[0064] In some embodiments, such as Figure 4 As shown, each car roof safety plate 300 can receive external car roof maintenance signals, thereby generating relevant maintenance status information.

[0065] To help those skilled in the art better understand the above embodiments, the following will use a scenario where the upper and lower cars are located in the same shaft as an example.

[0066] Only when the upper car is in maintenance mode (or emergency electric):

[0067] 1) When the second control cabinet 500 receives a landing door bypass signal from the first control cabinet corresponding to the upper car and the maintenance operation button (or emergency electric button) is activated, if either the upper car door or the lower car door is open outside the first target area, the second control cabinet 500 outputs a first control signal to the first control cabinet 400 corresponding to the upper car to stop the upper car. In other door-opening situations, the second control cabinet 500 outputs a second control signal to the first control cabinet 400 corresponding to the upper car to continue operating.

[0068] 2) When the second control cabinet 500 receives a bypass signal and the maintenance / run button (or emergency electric button) is activated, if the landing door is open and the lower car is outside the first target area, or if the lower car door is open outside the first target area, the second control cabinet 500 outputs a first control signal to the first control cabinet 400 corresponding to the upper car, so as to control the upper car to stop running through the first control cabinet 400. In other door-opening situations, the second control cabinet 500 outputs a second control signal to the first control cabinet 400 corresponding to the upper car, so as to control the upper car to continue running through the first control cabinet 400.

[0069] 3) When the landing door is open and the car door is not within the first target area, or when the car door is open outside the first target area, it does not affect whether the car stops running. In other door opening situations, the second control cabinet 500 outputs a first control signal to the first control cabinet 400 corresponding to the car, so as to control the car to stop running through the first control cabinet 400.

[0070] Only when the car is in maintenance mode (or emergency electric mode):

[0071] 1) When the second control cabinet 500 receives a landing door bypass signal from the first control cabinet corresponding to the lower car and the maintenance operation button (or emergency electric button) is activated, if either the lower car door or the upper car door is open outside the first target area, the second control cabinet 500 outputs a first control signal to the first control cabinet 400 corresponding to the lower car to stop the lower car from running. In other door-opening situations, the second control cabinet 500 outputs a second control signal to the first control cabinet 400 corresponding to the upper car to continue the lower car's operation.

[0072] 2) When the second control cabinet 500 receives a bypass signal and the maintenance / run button (or emergency electric button) is activated, if the landing door is open and the upper car is outside the first target area, or if the upper car door is open outside the first target area, the second control cabinet 500 outputs a first control signal to the first control cabinet 400 corresponding to the lower car, so as to control the lower car to stop running through the first control cabinet 400. In other door-opening situations, the second control cabinet 500 outputs a second control signal to the first control cabinet 400 corresponding to the lower car, so as to control the lower car to continue running through the first control cabinet 400.

[0073] 3) When the landing door is open and the lower car door is not within the first target area, or when the lower car door is open outside the first target area, it does not affect whether the upper car stops running. In other door opening situations, the second control cabinet 500 outputs a first control signal to the first control cabinet 400 corresponding to the upper car, so as to control the upper car to stop running through the first control cabinet 400.

[0074] When both the upper and lower cars are in maintenance mode (or emergency electric mode):

[0075] 1) When the second control cabinet 500 receives a landing door bypass signal from the first control cabinet corresponding to the upper car and the maintenance operation button (or emergency electric button) is activated, if either the upper car door or the lower car door is open outside the first target area, the second control cabinet 500 outputs a first control signal to the first control cabinet 400 corresponding to the upper car to stop the upper car. In other door-opening situations, the second control cabinet 500 outputs a second control signal to the first control cabinet 400 corresponding to the upper car to continue operating.

[0076] 2) If the second control cabinet 500 receives a landing door bypass signal from the first control cabinet corresponding to the lower car and the maintenance operation button (or emergency electric button) is activated, and either the lower car door or the upper car door is open outside the first target area, the second control cabinet 500 outputs a first control signal to the first control cabinet 400 corresponding to the lower car to stop the lower car from running. In other door-opening situations, the second control cabinet 500 outputs a second control signal to the first control cabinet 400 corresponding to the upper car to continue the lower car's operation.

[0077] 3) When the second control cabinet 500 receives a bypass signal and the maintenance / run button (or emergency electric button) is activated, if the landing door is open and the lower car is outside the first target area, or if the lower car door is open outside the first target area, the second control cabinet 500 outputs a first control signal to the first control cabinet 400 corresponding to the upper car, so as to control the upper car to stop running through the first control cabinet 400. In other door-opening situations, the second control cabinet 500 outputs a second control signal to the first control cabinet 400 corresponding to the upper car, so as to control the upper car to continue running through the first control cabinet 400.

[0078] 4) When the second control cabinet 500 receives a bypass signal and the maintenance / run button (or emergency electric button) is activated, if the landing door is open and the upper car is outside the first target area, or if the upper car door is open outside the first target area, the second control cabinet 500 outputs a first control signal to the first control cabinet 400 corresponding to the lower car, so as to control the lower car to stop running through the first control cabinet 400. In other door-opening situations, the second control cabinet 500 outputs a second control signal to the first control cabinet 400 corresponding to the lower car, so as to control the lower car to continue running through the first control cabinet 400.

[0079] In some embodiments, the maintenance status information may come not only from the car top safety plate 300 and the first control cabinet 400, but also from the pit safety plate, i.e., when the elevator is undergoing pit maintenance. For example, Figure 5 As shown, the elevator control system also includes a pit safety plate 600 connected to the second control cabinet 500. The abnormal status information received by the second control cabinet 500 also includes pit maintenance status information generated by the pit safety plate 600. That is, the pit safety plate 600 is used to generate pit maintenance status information.

[0080] In some embodiments, the elevator may have multiple types of doors, such as a front door and a rear door. That is, N cars have front doors and rear doors, and each floor also has a front door and a rear door. In this case, M acquisition boards are used to collect the door locking switch status information of the front door and the rear door of the corresponding floor door, respectively, to obtain two data streams.

[0081] This allows for more precise control of the elevator and improves the user experience.

[0082] In some embodiments, the N position sensors 200 are installed at the same relative positions to their respective cars in different cars.

[0083] In other words, the position sensors 200 are set in the same part of the car, that is, each position sensor 200 is in the same relative position to its own car. In this way, the car position information collected by the position sensors 200 has the same offset relative to its own car, and the control processing based on the car position will be more accurate.

[0084] In some embodiments, each position sensor 200 can provide two types of sensing methods: magnetic ruler positioning and QR code strip positioning. The sensing structure of the same sensing method is set at the same position in different cars and uses the same position code strip.

[0085] In some embodiments, at least some of the M acquisition boards 100 are connected to the second control cabinet 500 via the same CAN bus, N position sensors 200 are connected to the second control cabinet 500 via an RS485 bus, and N car top safety plates 300 are connected to the second control cabinet 500 via a CAN bus.

[0086] In this way, the various parts of the elevator control system are connected to the second control cabinet 500 via a bus, which ensures high reliability and high information transmission efficiency. This facilitates more efficient and safer control of the elevator car, improves operating efficiency, and ultimately enhances the user experience.

[0087] In some embodiments, every 32 acquisition boards 100 are connected to the second control cabinet 500 via the same secure CAN bus, thereby expanding the acquisition boards. If the remaining acquisition boards 100 are less than 64, they can still be connected to the second control cabinet 500 via another CAN bus.

[0088] Of course, the values ​​"32" and "64" mentioned above are just specific examples. Other values ​​can be used in other examples, which will not be elaborated here.

[0089] In some embodiments, such as Figure 5 As shown, the pit safety board 600 can also be connected to the second control cabinet 500 via a CAN bus. In particular, the pit safety board 600 and the acquisition board 100 can use the same CAN bus, thereby further reducing the number of buses in the system, simplifying the system configuration, and reducing costs.

[0090] It should be noted that, Figure 5 The above is just one example of the connection between the pit safety board 600 and the second control cabinet 500. In other cases, the pit safety board 600 can be connected to the second control cabinet 500 through an independent CAN bus, without sharing the CAN bus with the acquisition board 100. These will not be described in detail here.

[0091] In some embodiments, the pit safety panel 600 can receive external pit maintenance signals to generate relevant maintenance status information.

[0092] In some embodiments, different position sensors 200 are connected to the second control cabinet 500 via different secure RS485 buses.

[0093] In some embodiments, the first control cabinet 400 and the second control cabinet 500 may be located in the machine room at the top of the shaft to better protect the first control cabinet 400 and the second control cabinet 500.

[0094] It is worth mentioning that, in practical applications, a logical unit of each elevator control system involved in the above embodiments can be a physical unit, a part of a physical unit, or a combination of multiple physical units. Furthermore, to highlight the innovative aspects of this application, the above embodiments do not include units that are not closely related to solving the technical problems proposed in this application; however, this does not mean that other units are absent from this embodiment.

[0095] Another aspect of this application embodiment provides an elevator control method, applied to the second control cabinet in the elevator control system described in any of the above embodiments, such as... Figure 6 As shown, the elevator control method includes:

[0096] Step 601: Receive landing door locking switch status information collected by M acquisition boards, car door opening and closing status information collected by N car top safety plates, and car position information collected by N position sensors.

[0097] Step 602: Under normal operation of N cars, monitor whether there are any landing doors and / or car doors in an abnormal opening state based on the received landing door locking switch status information and car door opening status information.

[0098] Step 603: If an abnormal opening state is detected in the landing door and / or car door, based on the received car position information, detect whether the first target car is in the first target area; the first target car is the car in the abnormal opening state and / or the car closest to the landing door in the abnormal opening state; the first target area is the area whose distance to the landing door does not exceed a first preset distance. If yes, proceed to step 604; if no, proceed to step 605.

[0099] Step 604: Output a first control signal to the first control cabinet corresponding to the first target car among the N first control cabinets, so as to control the first target car to stop running through the first control cabinet that receives the first control signal.

[0100] Step 605: Output a first control signal to each of the N first control cabinets, so that the N cars can be stopped by the first control cabinets that receive the first control signal.

[0101] To help those skilled in the art better understand the above embodiments, illustrative examples will be provided below.

[0102] After the control system is started, it will continuously monitor whether the car is in maintenance or emergency power mode. If it is in maintenance or emergency power mode, control will be implemented according to the different maintenance (or emergency power) situations as described in the previous embodiments. If it is neither in maintenance nor emergency power mode, it will detect whether the car is in an abnormal door opening state, and output a control signal to the first control cabinet based on the detection result to keep the corresponding car running or stop running. When running, the system will detect the area and speed that the car is allowed to reach, and determine whether leveling, re-leveling, or early departure from the current floor is required based on the various target areas (second target area, third target area, fourth target area) and corresponding speed thresholds provided in the previous embodiments. At the same time, the system will continue to monitor whether the car is in an abnormal door opening state to keep the corresponding car running or stop running.

[0103] It is not difficult to see that this embodiment is a method embodiment corresponding to the system embodiment, and this embodiment can be implemented in conjunction with the same embodiment. The relevant technical details mentioned in the same embodiment are still valid in this embodiment, and will not be repeated here to reduce repetition. Correspondingly, the relevant technical details mentioned in this embodiment can also be applied to the system embodiment, and will not be repeated here.

[0104] It should be noted that the steps of the various methods described above are only for clarity. In practice, they can be combined into one step or some steps can be broken down into multiple steps. As long as they include the same logical relationship, they are all within the scope of protection of this patent. Adding insignificant modifications or introducing insignificant designs to the algorithm or process, but without changing the core design of the algorithm and process, are also within the scope of protection of this patent.

[0105] Another aspect of this application embodiment also provides an electronic device, such as... Figure 7 As shown, it includes: at least one processor 701; and a memory 702 communicatively connected to at least one processor 701; wherein the memory 702 stores instructions executable by at least one processor 701, the instructions being executed by at least one processor 701 to enable at least one processor 701 to perform the method described in any of the above method embodiments.

[0106] The memory 702 and processor 701 are connected via a bus, which can include any number of interconnecting buses and bridges. The bus connects various circuits of one or more processors 701 and memory 702 together. The bus can also connect various other circuits, such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. A bus interface provides an interface between the bus and the transceiver. The transceiver can be a single element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices over a transmission medium. Data processed by processor 701 is transmitted over a wireless medium via an antenna, which further receives data and transmits it to processor 701.

[0107] Processor 701 is responsible for managing the bus and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions. Memory 702 can be used to store data used by processor 701 during operation.

[0108] Another aspect of this application provides a computer-readable storage medium storing a computer program. When executed by a processor, the computer program implements the above-described method embodiments.

[0109] That is, those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware. This program is stored in a storage medium and includes several instructions to cause a device (which may be a microcontroller, chip, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0110] Those skilled in the art will understand that the above embodiments are specific embodiments for implementing this application, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of this application.

Claims

1. An elevator control system, characterized in that, The system is used to control the operation of N cars located in the same hoistway, where N is a positive integer greater than 1. The system includes: M acquisition boards, each corresponding to one of the M floors through which the shaft passes, are used to collect the door lock / unlock status information of the corresponding floors, where M is a positive integer greater than 2. N position sensors are respectively installed on different cars in the N cars to collect the car position information of the car. N car top safety plates are respectively installed on different cars in the N cars, and are used to collect the car door opening and closing status information of the car in which they are located; N first control cabinets, each corresponding to one of the N cars, are used to control the corresponding car to stop running and enter a safe state after receiving a first control signal. The second control cabinet is connected to the M acquisition boards, the N position sensors, the N car top safety plates, and the N first control cabinets, respectively. It receives the landing door locking switch status information collected by the M acquisition boards, the car door opening / closing status information collected by the N car top safety plates, and the car position information collected by the N position sensors. Under normal operation of the N cars, it monitors whether there is an abnormal opening state for the landing door and / or car door based on the received landing door locking switch status information and car door opening / closing status information. If an abnormal opening state is detected for the landing door and / or car door... Based on the received car position information, it detects whether the first target car is in the first target area. If the first target car is in the first target area, it outputs a first control signal to the first control cabinet corresponding to the first target car among the N first control cabinets. If the first target car is not in the first target area, it outputs the first control signal to all N first control cabinets. The first target car is the car in an abnormal door opening state and / or the car closest to the landing door in an abnormal door opening state. The first target area is the area where the distance to the landing door does not exceed a first preset distance.

2. The elevator control system according to claim 1, characterized in that, The second control cabinet is also used to monitor whether the second target car has entered the second target area and its speed is less than the first speed threshold based on the received car position information. When the second target car is detected to have entered the second target area and its speed is less than the first speed threshold, the second control cabinet outputs a second control signal to the first control cabinet corresponding to the second target car. The first control cabinet is also used to control the corresponding car to keep running according to the received second control signal after receiving the second control signal; The second target car is the car among the N cars that is responding to the user's elevator command, and the second target area is the area where the distance between the second target car and the target floor to be reached before reaching the target floor indicated by the user's elevator command does not exceed a second preset distance.

3. The elevator control system according to claim 2, characterized in that, The second control cabinet is also used to monitor whether the second target car has entered the third target area and its speed is less than the second speed threshold based on the received car position information after the second target car arrives at the target floor indicated by the user's elevator instruction and before leaving the target floor. If the second target car is detected to have entered the third target area and its speed is less than the second speed threshold, the second control signal is output to the first control cabinet corresponding to the second target car. The third target area is the area where the distance to the second target car and the target floor does not exceed a third preset distance.

4. The elevator control system according to claim 2, characterized in that, The second control cabinet is also used to monitor whether the second target car has entered the fourth target area and its speed is less than the third speed threshold based on the received car position information after the second target car arrives at the target floor indicated by the user's elevator instruction and before leaving the target floor. If the second target car is detected to have entered the fourth target area and its speed is less than the third speed threshold, the second control signal is output to the first control cabinet corresponding to the second target car. The fourth target area is the area where the distance from the second target car to the target floor does not exceed a fourth preset distance.

5. The elevator control system according to any one of claims 2 to 4, characterized in that, The N first control cabinets are also used to generate bypass signals according to user instructions; The second control cabinet is further configured to, upon receiving the bypass signal generated by the N first control cabinets and receiving abnormal status information, monitor whether there is an abnormal opening state of the landing door and / or the car door based on the received landing door locking switch status information and the car door opening status information; if an abnormal opening state of the landing door and / or the car door is detected, detect whether the first target car is in the first target area based on the received car position information; if the first target car is in the first target area, output a first control signal to the first control cabinet corresponding to the first target car; if the first target car is not in the first target area, simultaneously output the first control signal to the first control cabinet corresponding to the second target car.

6. The elevator control system according to claim 5, characterized in that, The bypass signal includes the landing door bypass signal and / or the car bypass signal; The abnormal status information received by the second control cabinet includes the maintenance status information of the corresponding car generated by the N car top safety plates and the emergency electric status information of the corresponding car generated by the N first control cabinets.

7. The elevator control system according to claim 6, characterized in that, The system also includes a pit safety plate connected to the second control cabinet, and the abnormal status information received by the second control cabinet also includes pit maintenance status information generated by the pit safety plate.

8. The elevator control system according to any one of claims 1 to 4, characterized in that, The N cars have front doors and / or rear doors, and the M acquisition boards are used to collect the door locking status information of the front and / or rear doors of the corresponding floors to obtain two data streams.

9. The elevator control system according to any one of claims 1 to 4, characterized in that, The N position sensors are installed in the same position relative to their respective car compartments in different cars.

10. The elevator control system according to any one of claims 1 to 4, characterized in that, At least some of the M acquisition boards are connected to the second control cabinet via the same CAN bus, the N position sensors are connected to the second control cabinet via an RS485 bus, and the N car roof safety panels are connected to the second control cabinet via a CAN bus.

11. An elevator control method, characterized in that, The method, applied to a second control cabinet in an elevator control system as described in any one of claims 1 to 10, comprises: Receives landing door locking switch status information collected by M acquisition boards, car door opening and closing status information collected by N car top safety plates, and car position information collected by N position sensors; When N cars are operating normally, based on the received landing door locking switch status information and car door opening status information, monitor whether there are landing doors and / or car doors in an abnormal opening state; If an abnormal opening state is detected in the landing door and / or car door, the system detects whether the first target car is in the first target area based on the received car position information; the first target car is the car in the abnormal opening state and / or the car closest to the landing door in the abnormal opening state; the first target area is the area where the distance to the landing door does not exceed a first preset distance. When the first target car is in the first target area, a first control signal is output to the first control cabinet corresponding to the first target car among the N first control cabinets, so that the first control cabinet that receives the first control signal controls the first target car to stop running; If the first target car is not in the first target area, the first control signal is output to all N first control cabinets so that the first control cabinets that receive the first control signal can control the N cars to stop running.

12. An electronic device, characterized in that, include: At least one processor; as well as, A memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor to enable the at least one processor to perform the elevator control method as described in claim 11.

13. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the elevator control method of claim 11.

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