An elevator control system

Abstract

The application provides an elevator control system. The application strictly verifies the user identity and floor authority through a card swiping identification module and an authority management module, only authorized users can enter the corresponding floor, effectively preventing unauthorized personnel from entering sensitive areas, and improving the safety of elevator use; the authority value can be calculated according to the user basic authority, temporary authority and time factor, etc., to realize fine management of user authority and meet the differentiated needs of different user groups at different time periods.

Description

Technical Field

[0001] This invention relates to the field of elevator technology, and more specifically, to an elevator control system. Background Technology

[0002] With the acceleration of urbanization and the increasing number of high-rise buildings, elevators, as an important tool for vertical transportation, have attracted much attention regarding their usage frequency and safety. Traditional elevator systems typically employ open management, allowing all users free access to all floors. This poses certain security risks, such as unauthorized personnel entering sensitive areas, potentially leading to security incidents. Furthermore, in commercial buildings or residential communities, the management of elevator use lacks sophisticated methods, making it difficult to meet the diverse needs of different user groups. Therefore, we propose an improved elevator control system. Summary of the Invention

[0003] This invention provides an elevator control system, including a card reader module, an access control module, an elevator control module, and a data recording module; The card reader module is installed inside the elevator car and waiting hall to read the user's smart card identity information and preset floor permissions. After the signal conversion unit converts the radio frequency signal into a digital signal, it is transmitted to the permission management module. The access control module has a built-in storage unit and a verification unit. The storage unit pre-stores the correspondence between user identity and allowed floors. The verification unit compares the card swipe information with the pre-stored information. If the verification is successful, it generates the target floor control command. The elevator control module interfaces with the existing elevator control system through the interface unit. After receiving control commands, it sends operation signals to the existing system to control the elevator to stop at the target floor. The data recording module records the user's card swipe time, identity information, and target floor in real time. It is linked to the alarm module, which triggers an audible and visual alarm and records abnormal information when the authorization verification fails.

[0004] As a preferred technical solution of this application, when verifying user floor permissions, the permission management module calculates the user's permission value P for the target floor using the following formula: P=α×A+β×T×(1−γ×Δt); Where A is the user's basic permission value (0 or 1, 1 indicates basic permissions), T is the temporary permission coefficient (0~1, set by the administrator), Δt is the time difference between the current time and the permission validity period, and α, β, γ are weighting coefficients (α+β=1, 0<γ<1); when P≥0.5, the permission verification is considered successful.

[0005] As a preferred technical solution of this application, the elevator control module uses the following formula when calculating the elevator operating energy consumption optimization coefficient K: ; Where N1 is the number of stops triggered by authorized users, N2 is the total number of stops, Fi is the actual number of floors the elevator stops at, Fj is the target floor, and n is the number of stops per run. The elevator is the highest floor; the elevator control module dynamically adjusts the elevator response priority based on the K value, and the higher the K value, the higher the response priority.

[0006] As a preferred technical solution of this application, the card reader identification module includes a card reader and a signal conversion unit. The card reader is installed in the elevator car and the waiting hall, and the signal conversion unit converts the radio frequency signal read by the card reader into a digital signal.

[0007] As a preferred technical solution of this application, the verification unit completes permission verification through the permission value P, and updates the user permission validity period through the following formula: T1 = T2 + ΔT × λ; Where T1 is the updated validity period, T2 is the original validity period, ΔT is the extension duration, and λ is the usage frequency coefficient (λ = actual usage times / expected usage times, 0 < λ ≤ 2).

[0008] As a preferred technical solution of this application, when the permission value P calculated by the permission management module is less than 0.5, the alarm module issues an audible and visual alert, and the alarm duration t satisfies the following formula: t = t0 × (1 + δ × N) y ); Where t0 is the base alarm duration, δ is the increment coefficient, and N y This refers to the number of consecutive abnormal card swipes on the same device within one hour.

[0009] As a preferred technical solution of this application, it also includes an emergency mode unit, which automatically removes permission restrictions and opens all floor stopping permissions when an emergency such as elevator entrapment, fire alarm, or power outage is detected, and sends an emergency signal to the management terminal through the data recording module.

[0010] As a preferred technical solution of this application, the emergency mode unit executes a fire-fighting forced landing algorithm: controlling the elevator to no longer respond to any floor selection commands inside the car, and performing the following operations according to a preset priority order: A. First, control the elevator to go directly to the first floor and open the door; B. If the ground floor is detected as the fire floor, control the elevator to move to the nearest safe area on a non-fire floor; C. After the elevator makes an emergency landing, keep the door open until a reset signal from the administrator is received.

[0011] As a preferred technical solution of this application, it also includes a fault self-diagnosis module for calculating the system operating stability coefficient S, the calculation formula of which is as follows: ; in, To accumulate system uptime, Let i be the duration of the i-th fault. S represents the total number of faults; when S < 99.9%, the fault self-diagnosis module automatically generates a fault report and sends it to the management terminal.

[0012] As a preferred technical solution of this application, the data recording module is also used to calculate the cost of a single elevator ride, and the cost calculation formula is as follows: C = B + Kc × |Ft - Fc|; Where C is the cost of a single elevator ride, B is the base starting price, Kc is the unit floor rate coefficient, Ft is the target floor, and Fc is the current floor of the elevator; the data recording module will deduct the calculated cost from the user's pre-stored account balance and generate a consumption record.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: In the scheme of this application: 1. This application uses a card reader and access control module to strictly verify user identity and floor access. Only authorized users can enter the corresponding floor, effectively preventing unauthorized personnel from entering sensitive areas and improving the safety of elevator use; 2. The permission management module of this application can calculate permission values ​​based on a comprehensive consideration of user basic permissions, temporary permissions, and time factors, thereby enabling refined management of user permissions and meeting the differentiated needs of different user groups at different times. Attached Figure Description

[0014] Figure 1 A schematic diagram of the elevator control system provided in this application; Figure 2 The user operation flowchart of the elevator control system provided in this application. Detailed Implementation

[0015] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0016] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0017] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0018] For an example, please refer to... Figure 1 An elevator control system includes a card reader module, an access control module, an elevator control module, and a data recording module. The card reader module is installed inside the elevator car and in the waiting hall. It is used to read the user's smart card identity information and preset floor permissions. After the radio frequency signal is converted into a digital signal by the signal conversion unit, it is transmitted to the permission management module. The card reader module covers the elevator car and waiting hall and can meet the user's card swiping needs in different scenarios. The access control module has a built-in storage unit and a verification unit. The storage unit pre-stores the correspondence between user identity and allowed floors. The verification unit compares the card swipe information with the pre-stored information. If the verification is successful, it generates a control command for the target floor. The storage unit pre-stores the correspondence, which provides a clear basis for verification. The comparison operation of the verification unit can accurately determine whether the user has permission to use the target floor, thereby controlling the elevator stop and improving the security of elevator management. The elevator control module interfaces with the existing elevator control system through the interface unit. After receiving control commands, it sends operation signals to the existing system to control the elevator to stop at the target floor. The interface unit can seamlessly interface with the control systems of mainstream elevator brands (Otis, Mitsubishi, Kone, Hitachi). It can transmit control signals through relay switches, RS485 communication, or CAN bus, so that the system can be applied to elevators of different brands without the need for large-scale modification of the existing elevator control system, saving costs and time. The data recording module records the user's card swipe time, identity information, and target floor in real time. It is linked to the alarm module, which triggers an audible and visual alarm and records abnormal information when the authorization verification fails.

[0019] Furthermore, when verifying user floor permissions, the access control module calculates the user's permission value P for the target floor using the following formula: P=α×A+β×T×(1−γ×Δt); Where A is the user's basic permission value (0 or 1, 1 indicates basic permissions), T is the temporary permission coefficient (0~1, set by the administrator), Δt is the time difference between the current time and the validity period of the permission (unit: days), and α, β, γ are weighting coefficients (α+β=1, 0<γ<1); when P≥0.5, the permission verification is considered successful; it realizes flexible and precise management of user permissions, taking into account the dynamic changes of basic permissions and temporary permissions.

[0020] Furthermore, the elevator control module uses the following formula when calculating the elevator operating energy consumption optimization coefficient K: ; Where N1 is the number of stops triggered by authorized users, N2 is the total number of stops, Fi is the actual number of floors the elevator stops at, Fj is the target floor, and n is the number of stops per run. The elevator is set to the highest floor. The elevator control module dynamically adjusts the elevator response priority based on the K value. The higher the K value, the higher the response priority. By calculating the energy consumption optimization coefficient K, factors such as the proportion of authorized users stopping at the elevator and the deviation between the actual floor and the target floor are comprehensively considered. The response priority is adjusted according to the K value so that the elevator responds to instructions with better energy consumption, reduces ineffective operation, thereby reducing energy consumption and improving operating efficiency.

[0021] Furthermore, the card reader module includes a card reader and a signal conversion unit. The card reader is installed in the elevator car and waiting hall. The card reader supports various card types, including common IC cards, to meet the needs of different users. The signal conversion unit converts the radio frequency signal read by the card reader into a digital signal.

[0022] Furthermore, the verification unit completes permission verification using the permission value P, and updates the user permission validity period using the following formula: T1 = T2 + ΔT × λ; Where T1 is the updated validity period, T2 is the original validity period, ΔT is the extension duration, and λ is the usage frequency coefficient (λ = actual usage times / expected usage times, 0 < λ ≤ 2). The usage frequency coefficient λ is linked to the actual usage times. When the actual usage times of a user exceed the expected usage times, the validity period can be extended for a longer period, thus incentivizing the user to use the service normally. This dynamic update method makes the validity period of permissions more closely match the actual usage of users and improves the flexibility of management.

[0023] Furthermore, when the permission value P calculated by the permission management module is less than 0.5, the alarm module issues an audible and visual alert, and the alarm duration t satisfies the following formula: t = t0 × (1 + δ × N) y ); Where t0 is the basic alarm duration (10~30 seconds), δ is the increment coefficient (0.1~0.3), and Ny This refers to the number of consecutive abnormal card swipes on the same device within one hour. The audible and visual alerts can promptly attract the attention of surrounding personnel and management personnel. As the number of consecutive abnormal card swipes on the same device increases, the alarm duration is extended, which can create a stronger deterrent against malicious card swipes and reduce the occurrence of abnormal situations.

[0024] Furthermore, it also includes an emergency mode unit, which automatically removes access restrictions and opens all floor stopping permissions when an emergency such as elevator entrapment, fire alarm, or power outage is detected, and sends an emergency signal to the management terminal through the data recording module. Methods for detecting elevator entrapment include: The emergency mode unit is connected to the elevator’s original safety circuit via hard wiring to collect emergency call signals, abnormal operating status signals, and door zone opening and closing signals in the car in real time. Emergency call signal inside the car: When the user presses the emergency call button inside the car, the button contacts close and generate a 24V DC signal. After the signal acquisition circuit of the emergency mode unit receives the signal, it starts timing. If the signal continues for 3 seconds without interruption, it is determined that someone is trapped. Abnormal operating status signal: The operating parameters are read through the RS485 interface of the elevator control system. When the elevator speed exceeds 115% of the rated speed, or the landing door / car door is not closed but the running command is output, or no door operator action signal is detected after the floor is stopped, it is determined to be an abnormal operation. Door zone opening / closing signal: The door zone sensor in the elevator shaft sends an opening signal to the emergency mode unit. If no door opening signal is detected within 30 seconds after the elevator stops at a floor, and there are people in the car (detected by infrared sensors in the car), it is determined that the door is malfunctioning and people are trapped.

[0025] The detection method for fire alarms includes: connecting to the building fire alarm system via a dry contact interface; when a passive normally open contact closing signal (duration ≥ 1 second) is received from the fire alarm system, it is determined to be a fire emergency.

[0026] The power outage detection method includes: the emergency mode unit has a built-in voltage detection module that monitors the system power supply voltage (AC220V±10%) in real time. When the voltage is detected to be lower than AC180V and the duration is ≥500ms, or the voltage drop exceeds 30% (relative to the rated voltage), it is determined to be a power outage emergency.

[0027] Furthermore, the emergency mode unit executes the fire-fighting forced landing algorithm: it controls the elevator to no longer respond to any floor selection commands inside the car, and performs the following operations according to a preset priority sequence: A. First, control the elevator to go directly to the first floor and open the door; B. If the ground floor is detected as the fire-prone floor (determined by receiving the fire alarm system zone signal), the elevator will be controlled to move to the nearest safe area on a non-fire-prone floor. C. After the elevator makes an emergency landing, keep the door open until a reset signal from the administrator is received.

[0028] Furthermore, it also includes a fault self-diagnosis module, used to calculate the system's operational stability coefficient S, calculated using the following formula: ; in, The system's cumulative uptime (in hours). The duration of the i-th fault (in hours). The total number of failures is S. When S < 99.9%, the fault self-diagnosis module automatically generates a fault report and sends it to the management terminal. By calculating the stability coefficient S, the system operating status can be reflected intuitively. When S is lower than the threshold, a fault report is automatically generated, enabling managers to understand the fault situation in a timely manner and carry out maintenance, reducing the impact of faults on system operation and improving system reliability.

[0029] Furthermore, the data recording module is also used to calculate the cost of a single elevator ride. The cost calculation formula is as follows: C = B + Kc × |Ft - Fc|; Where C is the cost of a single elevator ride, B is the base fare, Kc is the unit floor rate coefficient, Ft is the target floor, and Fc is the current floor of the elevator; the data recording module deducts the calculated cost from the user's pre-stored account balance and generates a consumption record; the cost calculation takes into account the base fare and floor difference, which can reasonably measure the cost of elevator rides; the automatic deduction of costs and generation of consumption records reduces manual operation and improves the accuracy and efficiency of cost management.

[0030] The elevator control system provided by this invention is used as follows: I. Installation methods for each component: Card readers are installed in the elevator car (next to the control panel, 1.2-1.5m high, for easy card swiping) and in the waiting hall (on each floor, on the same side as the call button, 1.2-1.5m high); the signal conversion unit is installed near the elevator control cabinet or in the low-voltage box in the waiting hall, and is fixed to the mounting plate with screws; the access control module is installed in the elevator machine room control cabinet or the building's low-voltage room, and the elevator control module is installed inside the existing elevator control cabinet, and is fixed with screws; the data recording module is installed in the building management center computer room or low-voltage room, connected to a stable power supply, and ensuring network connectivity; the audible and visual alarms are installed in the car and in the waiting hall, and are fixed with screws; the emergency mode unit is installed in the elevator control cabinet, connected to the existing safety circuit, door zone sensor, infrared sensor, and other equipment nearby, and requires a backup power supply; the fault self-diagnosis module is integrated into the access control module or installed independently in the low-voltage room, and is connected to each module via signal lines; The RF signal output of the card reader is connected to the input of the signal conversion unit via a shielded cable; the digital signal output (RS485 interface) of the signal conversion unit is connected to the signal input of the access control module via a twisted pair cable. When wiring, distinguish between positive and negative terminals (A / B lines correspond) and ensure proper grounding; the access control module is connected to the elevator control module via RS485 or CAN bus (selected according to the elevator brand, such as Otis and Mitsubishi commonly using CAN bus, and Kone and Hitachi commonly using RS485). The control command output of the access control module is connected to the command input of the elevator control module. After soldering the connector, insulate and wrap it. The interface unit connects to the elevator's existing floor selection signal circuit (corresponding to each floor relay) via relay switching, or directly connects to the communication interface of the existing control system via RS485 / CAN bus. The access control module and the data recording module are connected via Ethernet (network cable) or RS485 bus. The data recording module needs to be connected to the management terminal LAN and configured with a fixed IP address to ensure real-time data upload. The alarm signal output terminal (switching quantity) of the access control module is connected to the control terminal of the audible and visual alarm via a wire. The alarm module needs to be connected to a separate DC24V power supply, and a fuse is connected in series in the circuit. The emergency mode unit is connected via hard wiring to the elevator's existing safety circuit, the car emergency call button (24V signal line), and the door zone sensor (position signal line). It is also connected to the elevator control system via an RS485 interface (to read operating parameters) and to the building fire alarm system via a dry contact interface. The emergency mode unit has a built-in voltage detection module that is connected to the system power supply line. The fault self-diagnosis module is connected in parallel to the status output terminals of the card reader module, the access control module, and the elevator control module via signal lines (to collect operating status signals in real time). II. Instructions for use: Administrator actions: Log in to the permission management module backend through the management terminal, preset the correspondence between user identity information (card number) and allowed floors, and set the basic permission value (A=1 or 0), temporary permission coefficient (T), permission validity period (T2) and weight coefficient (α, β, γ). Configure the calculation parameters of the energy consumption optimization coefficient (K) in the elevator control module, set the basic alarm duration (t0) and increment coefficient (δ) in the alarm module, and set the basic starting price (B) and unit floor rate (K) in the data recording module. After receiving emergency signals (trapped people, fire, power outage) from the emergency mode unit, and handling them remotely or on-site, the emergency mode is deactivated by sending a reset signal through the management terminal.

[0031] User usage: After swiping a smart card at the card reader in the elevator lobby, the system verifies the user's permissions and the elevator control module sends a command to the existing system. The elevator then responds and stops at the current floor. After entering the elevator car, swipe your smart card on the card reader inside the car. Once the system verifies the card, it will automatically register the target floor and the elevator will move to the target floor. After each card swipe, the data recording module automatically calculates the elevator fare, deducts it from the user's prepaid account, and generates a consumption record; III. Exception Handling: When the permission verification fails (P<0.5), the alarm module triggers an audible and visual alarm (the duration t increases with the number of consecutive abnormalities), and the data logging module records the abnormal information, which the administrator can view and handle through the backend. When the system fails (stability coefficient S<99.9%), the fault self-diagnosis module automatically generates a fault report and sends it to the management terminal, and the administrator needs to repair it in time. IV. Emergency Mode: When a person is trapped, a fire or a power outage is detected, the emergency mode unit will automatically remove the access restrictions and open all floors; in the event of a fire, the fire emergency landing algorithm will be executed (prioritizing the first floor, and if the first floor is the fire floor, then going to the nearest safe floor), and the elevator will remain open after the emergency landing until it is reset.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this invention.

Claims

1. An elevator control system, characterized in that, It includes a card reader module, an access control module, an elevator control module, and a data recording module; The card reader module is installed inside the elevator car and waiting hall to read the user's smart card identity information and preset floor permissions. After the signal conversion unit converts the radio frequency signal into a digital signal, it is transmitted to the permission management module. The access control module has a built-in storage unit and a verification unit. The storage unit pre-stores the correspondence between user identity and allowed floors. The verification unit compares the card swipe information with the pre-stored information. If the verification is successful, it generates the target floor control command. The elevator control module interfaces with the existing elevator control system through the interface unit. After receiving control commands, it sends operation signals to the existing system to control the elevator to stop at the target floor. The data recording module records the user's card swipe time, identity information, and target floor in real time. It is linked to the alarm module, which triggers an audible and visual alarm and records abnormal information when the authorization verification fails.

2. The elevator control system according to claim 1, characterized in that, When verifying a user's floor permissions, the access control module calculates the user's access value P for the target floor using the following formula: P=α×A+β×T×(1−γ×Δt); Where A is the user's basic permission value (0 or 1, 1 indicates basic permissions), T is the temporary permission coefficient (0~1, set by the administrator), Δt is the time difference between the current time and the permission validity period, and α, β, γ are weighting coefficients (α+β=1, 0<γ<1); when P≥0.5, the permission verification is considered successful.

3. The elevator control system according to claim 1, characterized in that, The elevator control module uses the following formula when calculating the elevator's energy consumption optimization coefficient K: ； Where N1 is the number of stops triggered by authorized users, N2 is the total number of stops, Fi is the actual number of floors the elevator stops at, Fj is the target floor, and n is the number of stops per run. The elevator is the highest floor; the elevator control module dynamically adjusts the elevator response priority based on the K value, and the higher the K value, the higher the response priority.

4. The elevator control system according to claim 1, characterized in that, The card reader module includes a card reader and a signal conversion unit. The card reader is installed inside the elevator car and in the waiting hall. The signal conversion unit converts the radio frequency signal read by the card reader into a digital signal.

5. The elevator control system according to claim 1, characterized in that, The verification unit completes permission verification using the permission value P, and updates the user permission validity period using the following formula: T1 = T2 + ΔT × λ; Where T1 is the updated validity period, T2 is the original validity period, ΔT is the extension duration, and λ is the usage frequency coefficient (λ = actual usage times / expected usage times, 0 < λ ≤ 2).

6. The elevator control system according to claim 2, characterized in that, When the permission value P calculated by the permission management module is less than 0.5, the alarm module issues an audible and visual alert, and the alarm duration t satisfies the following formula: t=t0×(1+δ×N y ); Where t0 is the base alarm duration, δ is the increment coefficient, and N y This refers to the number of consecutive abnormal card swipes on the same device within one hour.

7. The elevator control system according to claim 1, characterized in that, It also includes an emergency mode unit, which automatically removes access restrictions and opens all floor stopping permissions when an emergency such as elevator entrapment, fire alarm, or power outage is detected, and sends an emergency signal to the management terminal through the data recording module.

8. The elevator control system according to claim 7, characterized in that, The emergency mode unit executes a fire-fighting forced landing algorithm: it controls the elevator to no longer respond to any floor selection commands inside the car, and performs the following operations according to a preset priority sequence: A. First, control the elevator to go directly to the first floor and open the door; B. If the ground floor is detected as the fire floor, control the elevator to move to the nearest safe area on a non-fire floor; C. After the elevator makes an emergency landing, keep the door open until a reset signal from the administrator is received.

9. The elevator control system according to claim 1, characterized in that, It also includes a fault self-diagnosis module, used to calculate the system's operational stability coefficient S, calculated using the following formula: ； in, To accumulate the system's uptime, Let i be the duration of the i-th fault. S represents the total number of faults; when S < 99.9%, the fault self-diagnosis module automatically generates a fault report and sends it to the management terminal.

10. The elevator control system according to claim 1, characterized in that, The data recording module is also used to calculate the cost of a single elevator ride. The cost calculation formula is as follows: C = B + Kc × |Ft - Fc|; Where C is the cost of a single elevator ride, B is the base starting price, Kc is the unit floor rate coefficient, Ft is the target floor, and Fc is the current floor of the elevator; the data recording module will deduct the calculated cost from the user's pre-stored account balance and generate a consumption record.

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