An elevator controller, a traction machine, and an elevator control system.

Abstract

This utility model relates to the field of elevator control structure technology, and discloses an elevator controller, a traction machine, and an elevator control system. The elevator controller is installed on the traction machine and includes: a main control board and an interface board connected to the main control board. The main control board is used to control the operation of the elevator. The interface board is provided with an internal interface and an external interface. The main control board transmits signals to the inside of the elevator control system through the internal interface, and transmits signals to the outside of the elevator control system through the external interface. The internal interface includes an expansion function interface, which is used to connect various safety monitoring devices and wireless communication devices for monitoring the elevator status. Installing the elevator controller on the traction machine reduces the size of the control cabinet. By connecting various safety monitoring devices and wireless communication devices through the expansion function interface, it is possible to remotely monitor the comprehensive operating status information of the traction machine, thereby achieving more precise and efficient control and fault maintenance of the elevator, and reducing the overall operation and maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of elevator control structure technology, specifically to an elevator controller, traction machine, and elevator control system. Background Technology

[0002] Existing elevator control components are all housed in control cabinets, resulting in large cabinets that occupy significant shaft space. This creates considerable difficulties for elevator design, layout, and subsequent maintenance in environments with limited shaft space, increasing costs. Furthermore, existing elevator control systems lack reserved hardware interfaces and communication channels for remote monitoring, making it difficult to remotely transmit elevator operation data and fault information to a monitoring center. This prevents maintenance personnel from obtaining real-time equipment status, forcing them to conduct on-site inspections, which is inefficient and hinders the timely detection of potential problems. Due to the lack of remote monitoring capabilities, when an elevator malfunctions, current technology cannot remotely obtain fault information and equipment operation data, making it difficult for maintenance personnel to remotely analyze the cause of the malfunction. They must still go to the site for troubleshooting, increasing troubleshooting time and costs. Moreover, the inability to remotely guide on-site personnel in handling simple faults reduces troubleshooting efficiency, affects normal elevator operation, and prevents remote parameter adjustments and program upgrades for the traction machine. All maintenance and management work relies on on-site manual labor, which significantly increases the workload and management costs of maintenance personnel in large-scale elevator management scenarios, making efficient centralized equipment management and maintenance difficult. Utility Model Content

[0003] In view of this, the present invention provides an elevator controller, a traction machine, and an elevator control system, which solves the problems of existing technologies where elevator control components are arranged in control cabinets, resulting in large space occupation in the shaft and the inability to remotely monitor the elevator's real-time and comprehensive operating status, thereby affecting operation and maintenance efficiency and increasing costs.

[0004] In a first aspect, this utility model provides an elevator controller, installed on a traction machine. The elevator controller includes a main control board and an interface board connected to the main control board. The main control board is used to control the operation of the elevator. The interface board is provided with an internal interface and an external interface. The main control board transmits signals to the inside of the elevator control system through the internal interface and transmits signals to the outside of the elevator control system through the external interface. The internal interface includes an extended function interface, which is used to connect various safety monitoring devices for monitoring the elevator status and wireless communication equipment.

[0005] This embodiment integrates the elevator controller's main control board and interface board directly near the traction machine, reducing the number of components in the control cabinet and shrinking its size from the outset. This smaller cabinet frees up more space in the hoistway, making it particularly suitable for installation environments with limited hoistway space. It also simplifies elevator design and layout, allowing maintenance personnel to perform repairs directly near the traction machine without frequent entry into the confined space of the control cabinet, thus shortening maintenance time and improving operational convenience. Extended functionality includes connecting to wireless communication devices via an interface, enabling real-time remote transmission of sensor data from various safety monitoring devices monitoring the traction machine's status to the backend monitoring center. Maintenance personnel can monitor the traction machine's operating parameters anytime without being physically present, achieving 24 / 7 remote monitoring and significantly improving the timeliness and convenience of monitoring. Once an elevator malfunctions, the data collected by the sensors, combined with wireless communication equipment, can quickly send fault information remotely to maintenance personnel, providing remote guidance for initial on-site handling, reducing on-site troubleshooting time, significantly shortening the fault handling cycle, reducing equipment downtime, ensuring the normal operation of the elevator, and the remote monitoring function eliminates the need for maintenance personnel to frequently visit the site to inspect the equipment, effectively reducing overall maintenance costs.

[0006] In one optional implementation, the internal interface includes a first interface and a second interface, and a switching power supply is connected between the first interface and the second interface for supplying power to the elevator controller.

[0007] The first interface includes: an electrical safety door lock detection interface, a DC24V power supply detection interface, a contactor control interface, an emergency electric switch interface, and a power input interface.

[0008] The second interface includes: the pre-opening function interface and the extended function interface.

[0009] The external interfaces include a third interface and a fourth interface, wherein:

[0010] The third interface includes: shaft safety cable interface, traveling cable interface, external call communication cable interface, pit intercom cable interface, and deceleration switch cable interface;

[0011] The fourth interface includes: a brake power interface, a car power interface, a handwheel switch interface, a mains power interface, a speed governor switch interface, a backup input interface, and a main brake interface; the backup input interface is used to connect backup equipment.

[0012] Each functional interface in this embodiment is independently integrated, facilitating troubleshooting and maintenance. In the event of a fault, maintenance personnel can quickly locate the faulty component based on the interface functions, reducing maintenance time and costs. The modular design of the backup input signal interface and each interface board makes the system easily expandable. New functional modules or devices can be added according to actual needs without requiring large-scale modifications to the entire system, improving system adaptability and scalability.

[0013] In one optional implementation, the first interface is disposed on the first interface board, the second interface is disposed on the second interface board, the third interface is disposed on the third interface board, and the fourth interface is disposed on the fourth interface board. The first, second, third, and fourth interface boards are respectively connected to the main control board via ribbon cables to achieve layered signal transmission.

[0014] This embodiment leverages the large data transmission capacity of the cabling to provide a stable channel for signal transmission. Layered transmission ensures that signals from each layer are relatively independent. Even if a portion of the wiring on one layer fails, signals from other layers can still be transmitted normally, without affecting the core functions of the entire system. The elevator can still maintain basic operation and safety protection functions.

[0015] Secondly, the present invention provides a traction machine, including an elevator controller according to any embodiment of the first aspect; the safety monitoring device includes an encoder, which is fixed to the traction machine and coaxially fixed with the traction machine shaft, and is used to indirectly calculate the traction sheave speed by detecting the shaft speed.

[0016] This embodiment of the invention continuously monitors the motor shaft speed through an encoder connected to the extended function interface in the elevator controller. Once an abnormal increase in speed is detected, it may indicate that the elevator is overspeeding. The abnormal signal fed back by the encoder can trigger the elevator's safety braking device, quickly stopping the elevator and effectively preventing safety accidents caused by overspeeding, thus ensuring passenger and equipment safety. Since the rotating part of the encoder is coaxially fixed to the motor shaft, it can indirectly reflect the working status of the transmission system. If transmission components experience loosening or slippage, it can lead to abnormal speed matching between the motor shaft and the traction sheave. The encoder can promptly detect this change, allowing the system to provide early warning of potential faults and prevent the fault from escalating.

[0017] Thirdly, this utility model provides an elevator control system, including the traction machine described in the second aspect. The elevator control system also includes various safety monitoring devices and wireless communication devices. The various safety monitoring devices and the wireless communication devices are connected to the extended function interface. The various safety monitoring devices feed back safety monitoring signals to the main control board through the extended function interface. The main control board remotely interacts with the Internet of Things platform through the wireless communication devices to control the elevator operation.

[0018] In one optional embodiment, the safety monitoring device includes: a position sensor arranged on the traction machine base plate, which monitors the working status of the traction sheave by detecting the left and right yaw displacement of the traction sheave, and the position sensor is fixed to the expansion function interface by a wiring harness.

[0019] This utility model embodiment uses a position sensor to monitor the left and right yaw displacement of the traction sheave in real time. Once the yaw exceeds the normal range, it can promptly warn of potential risks such as abnormal wear of the traction sheave, wire rope slippage, or even derailment. This avoids elevator malfunctions caused by abnormal traction sheave operation, effectively protecting passenger and equipment safety. By accurately monitoring the yaw, it ensures stable operation of the traction sheave, reducing elevator vibration and abnormal noise caused by traction sheave instability, improving the smoothness and comfort of elevator operation, and reducing the probability of safety accidents. The position sensor is placed on the traction machine base plate and connected to the extended function interface through a wiring harness, so that when abnormal yaw is detected, the fault of the traction sheave component can be accurately located, making it easier for maintenance personnel to quickly pinpoint the problem and improve fault diagnosis efficiency.

[0020] In one optional embodiment, the safety monitoring device includes a temperature sensor embedded in the stator assembly of the traction machine, with its lead-out terminals fixed to an expansion function interface through holes in the rear housing of the traction machine, for real-time monitoring of the temperature of the traction machine.

[0021] This invention utilizes real-time temperature data collected by a temperature sensor, which serves as a crucial basis for equipment maintenance analysis. Analysis of historical temperature data allows for understanding the motor's heating patterns and temperature change trends, predicting the motor's health and lifespan, and helping to develop more scientific and reasonable maintenance plans. This shifts the focus from reactive maintenance to proactive prevention, reducing maintenance costs. The temperature sensor is directly mounted on the motor stator assembly and connected to an extended functionality interface via specific wiring. When an abnormal temperature is detected, the problem can be precisely located in the motor stator, facilitating rapid fault identification by maintenance personnel and improving fault diagnosis efficiency.

[0022] In one optional embodiment, the safety monitoring device includes: a first vibration sensor, disposed on the bearing housing surface of the non-drive end and drive end of the traction machine, for monitoring radial or axial vibration signals of the front / rear bearings of the traction machine;

[0023] The second vibration sensor is located in the bearing area of ​​the traction sheave and is used to monitor the vibration signals of wire rope tension and sheave groove wear.

[0024] This utility model embodiment uses two types of vibration sensors to monitor different parts. When an abnormal vibration signal is detected, the faulty component can be directly located, helping maintenance personnel to quickly pinpoint the fault, reduce troubleshooting time, improve maintenance efficiency, and ensure the normal operation of the traction machine's core components through comprehensive vibration monitoring. This improves the overall reliability of the elevator system, reduces the number of elevator downtimes caused by equipment failure, and enhances elevator usage efficiency and service quality.

[0025] In one optional embodiment, the safety monitoring device includes an image acquisition device for monitoring the tension of the wire rope or the offset of the guide rail.

[0026] This utility model embodiment uses an image acquisition device and visual monitoring technology to achieve real-time, non-contact, and intelligent detection of wire ropes and guide rails, solving the efficiency and accuracy problems of traditional manual inspection. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram showing the connection between the main control board and the interface board of the elevator controller provided in this embodiment of the utility model;

[0029] Figure 2 This is a schematic diagram of the functional interfaces included in the internal interface of the interface board provided in this embodiment of the utility model.

[0030] Figure 3 This is a schematic diagram of the functional interfaces included in the external interfaces of the interface board provided in this embodiment of the utility model. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] This embodiment provides an elevator controller, which is installed on the traction machine, such as... Figure 1As shown, the elevator controller includes: a main control board and an interface board connected to the main control board. The main control board is used to control the operation of the elevator. The interface board is provided with an internal interface and an external interface. The main control board transmits signals to the inside of the elevator control system through the internal interface and transmits signals to the outside of the elevator control system through the external interface. The internal interface includes an expansion function interface, which is used to connect various safety monitoring devices for monitoring the elevator status and wireless communication equipment.

[0033] Traditional elevator control components are centrally located within a control cabinet, resulting in a bulky cabinet size. In this embodiment, the controller is installed on the traction machine, with the main control board and interface board directly integrated near the traction machine. This reduces the number of components within the control cabinet, shrinking its size from the outset. The reduced cabinet size frees up more space in the hoistway, making it particularly suitable for installation environments with limited hoistway space (such as renovations of old buildings or small elevator scenarios), simplifying elevator design and layout. With the control components installed close to the traction machine, maintenance personnel can perform repairs directly near the machine, eliminating the need for frequent entry into the confined space of the control cabinet, shortening maintenance time and improving operational convenience. This also improves subsequent maintenance efficiency, reduces labor costs, and allows for early warning of faults, avoiding unnecessary downtime and reducing operational losses.

[0034] It should be noted that the main control board in this embodiment uses an industrial-grade MCU / PLC, which is a relatively mature processor for controlling elevator operation, and does not involve any improvement in the control algorithm.

[0035] This embodiment features an internal interface extension function interface that connects to wireless communication devices (such as 4G / 5G modules and Wi-Fi modules) and simultaneously integrates various safety monitoring devices (such as vibration sensors and temperature sensors) for real-time data analysis of the remote monitoring system. The main control board transmits elevator operation data (such as speed, load, and fault codes) and safety monitoring data to the remote monitoring platform in real time via wireless communication devices. Maintenance personnel can check the elevator's operating status at any time without on-site inspections. The design, which integrates the controller installed on the traction machine and the interface board with the extension function interface to connect to various safety monitoring devices and wireless communication devices, solves the pain points of traditional elevator control systems from three core dimensions: space utilization, cost control, and operation and maintenance efficiency. It is particularly suitable for scenarios that are sensitive to shaft space and require intelligent operation and maintenance, providing a feasible solution for the miniaturization and intelligent upgrading of the elevator industry.

[0036] like Figure 2The schematic diagram of the internal interface shown includes a first interface and a second interface. A switching power supply is connected between the first interface and the second interface to supply power to the elevator controller. The first interface includes: an electrical safety door lock detection interface, a DC24V power supply detection interface, a contactor control interface, an emergency electric switch interface, and a power input interface. The second interface includes: an early door opening function interface and the aforementioned extended function interface.

[0037] Specifically, the functions implemented by each interface included in the first interface are as follows:

[0038] 1. Electrical Safety Door Lock Detection Interface: This interface monitors the door lock status of elevator landing doors and car doors in real time, detecting the continuity of the door lock circuit. It determines whether the doors are reliably closed and locked. This ensures elevator safety, preventing the elevator from operating with unlocked doors and avoiding dangerous accidents such as falls and shearing. If a door lock is abnormally opened, it can trigger the safety brake in time to stop the elevator.

[0039] 2. DC24V power supply detection interface: Used to detect whether the DC24V power supply voltage of the main control board is normal, monitor voltage stability, and check for overvoltage or undervoltage. This ensures that the main control board and related circuits operate under a stable and appropriate voltage, preventing problems such as motherboard failure and control malfunction due to abnormal voltage, ensuring stable controller operation, and extending equipment lifespan.

[0040] 3. Contactor control interface: This interface connects to actuators such as the main contactor and the brake contactor. The main control board controls the contactor to engage / disengage through this interface to realize elevator starting, braking and other actions, and avoid elevator loss of control due to contactor failure (such as forced operation when the brake is not released).

[0041] 4. Emergency Electric Switch Interface: This interface connects to the emergency electric switch (located in the machine room or on the car top). Maintenance personnel can short-circuit some safety circuits (such as speed governor and buffer switch) in maintenance mode to manually control the elevator to run at low speed, which facilitates maintenance in the shaft and adjustment of the car position (such as leveling for rescue when people are trapped), thus improving emergency response efficiency.

[0042] 5. Power Input Interface: Provides power to the main control door operator system, enabling the door operator to perform normal opening and closing actions. The power supply includes the door operator power supply, safety circuit / door operator brake power supply, control transformer interface, etc., to ensure the stable operation of the door operator system, realize the smooth opening and closing of the elevator door, improve the convenience and comfort of passengers, and at the same time cooperate with door lock detection to ensure safety.

[0043] The functions implemented by each interface included in the second interface are as follows:

[0044] 1. Pre-opening door function circuit interface: This function enables the elevator to open the car door before it comes to a complete stop at the landing, optimizing elevator operating efficiency and shortening passenger waiting time. It improves elevator utilization and passenger flow, especially in high-traffic areas, effectively enhancing the passenger experience, reducing elevator stop time, and increasing overall transport capacity.

[0045] 2. Extended Functionality Interface: This interface connects to various safety monitoring devices for elevator status monitoring, including various sensors (such as temperature sensors, encoders, position sensors, vibration sensors, etc.), expanding the functionality of the elevator control system and enabling comprehensive monitoring of the traction machine's operating status. By connecting multiple sensors, parameters such as temperature, speed, position, and vibration of the traction machine can be acquired in real time, facilitating the timely detection of potential equipment malfunctions and enabling preventative maintenance, thereby improving the reliability and safety of elevator operation. In this embodiment, by connecting wireless communication devices (such as 4G / 5G modules and Wi-Fi modules), the traction machine data collected by the sensors can be uploaded to the cloud management platform in real time. Maintenance personnel do not need to conduct on-site inspections; they can remotely view equipment operating parameters and monitor the traction machine's status (such as operating time and load) via mobile phone or computer, significantly reducing manual inspection costs, especially suitable for multi-machine-room distributed management scenarios. When a traction machine malfunctions, wireless communication equipment can quickly transmit fault data (such as sensor alarm information and operation logs) to the maintenance center. Technicians can remotely analyze the cause of the fault (such as determining whether it is a sensor false alarm or a mechanical failure) and remotely issue control commands (such as adjusting operating parameters or restarting the equipment), shortening the fault handling time. For situations requiring on-site repair, problems can also be located in advance through remote data, improving maintenance efficiency.

[0046] Optionally, the second interface may also include a machine room intercom interface for use in machine room-less elevators. The functions of the machine room intercom interface are as follows:

[0047] Machine Room Intercom Interface: Establishes a voice communication channel between the machine room and the elevator car, and between the machine room and the outside world (such as the management office). This facilitates communication between machine room personnel and passengers inside the car or outside personnel when the elevator malfunctions or when communication is needed. In the event of an elevator malfunction, passengers inside the car can use this intercom system to contact machine room personnel or the outside world to receive timely rescue guidance and reassurance. Machine room personnel can also use this channel to convey information to passengers inside the car, ensuring the smooth progress of rescue operations and enhancing passenger safety.

[0048] The elevator controller provided in this embodiment has two external interfaces, a third interface and a fourth interface, such as... Figure 3As shown: The third interface includes: hoistway safety cable interface, traveling cable interface, external call communication cable interface, pit intercom cable interface, and deceleration switch cable interface; the fourth interface includes: brake power interface, car power interface, handwheel switch interface, mains power interface, speed limiter switch interface, backup input interface, and mains brake interface; the backup input interface is used to connect backup equipment.

[0049] Specifically, the functions implemented by each interface included in the third interface are as follows:

[0050] 1. Shaft Safety Cable Interface: Connects to the safety door lock devices on each floor of the shaft, monitors the door lock status in real time, and ensures that the elevator doors are closed and properly locked. This prevents people from accidentally opening the doors while the elevator is running, avoiding falls and other dangerous accidents, and ensuring the safety of people in the shaft and the elevator itself. If the door lock status malfunctions, it can trigger the elevator safety brake.

[0051] 2. Traveling cable interface: The traveling cable connects the car and the control cabinet, transmitting car commands (such as internal call signals and door operator signals) and car status data (such as load weight and position signals). It supports bidirectional communication between the car and the controller, ensuring real-time transmission of signals such as internal call commands and door operator actions.

[0052] 3. External Call Communication Cable Interface: Used to enable communication between the elevator car and the external call panels on each floor, receiving external call signals and providing feedback on the elevator's operating status (such as floor display, direction of travel, etc.). This allows passengers to call the elevator at their floor level, understand the elevator's operating status, and improve convenience and experience; it also helps the elevator control system to rationally schedule elevators and improve operating efficiency.

[0053] 4. Pit Intercom Cable Interface: Used to establish a voice communication connection between the pit and the car, machine room, etc., facilitating communication between maintenance personnel and other personnel while working in the pit. This allows maintenance personnel to communicate with the outside world through this interface during maintenance and repair in the elevator pit, promptly report problems and obtain assistance, ensuring the safe and efficient conduct of maintenance work.

[0054] 5. Deceleration switch cable interface: Connects to the deceleration switch in the shaft. When the elevator approaches the target floor, it triggers a deceleration signal to control the elevator to stop smoothly, improve leveling accuracy and riding comfort. It works with the main control board to achieve closed-loop speed control, reduce mechanical shock, and extend equipment life.

[0055] The functions implemented by each interface included in the fourth interface are as follows:

[0056] 1. Brake Power Interface and Car Power Interface: The brake power interface provides power to the brake device, controlling its opening and closing; the car power interface supplies power to the equipment inside the car. The brake power supply ensures reliable brake operation, enabling the elevator to brake accurately when needed and prevent runaway; the car power supply maintains the normal operation of the equipment inside the car, ensuring passenger comfort and safety.

[0057] 2. Handwheel switch interface: Connects to the handwheel switch. When the elevator is manually turned, the switch signal is triggered to cut off the power supply to the elevator, ensuring the safety of the turning operation, preventing the elevator from starting unexpectedly during the turning process, and ensuring the safety of maintenance personnel.

[0058] 3. Mains Power Interface: Used to introduce mains power, providing the primary power source for the elevator control system and related equipment. This ensures a stable power supply for the elevator, maintaining normal operation and serving as the fundamental energy guarantee for elevator operation.

[0059] 4. Speed ​​Governor Switch Interface: This interface connects to the speed governor switch. When the elevator's speed exceeds a certain rated speed, the speed governor is triggered, sending a signal to the elevator control system via this interface to activate the safety braking device. This prevents the elevator from overspeeding and avoids accidents caused by overspeeding, making it a crucial safety protection interface for ensuring elevator safety.

[0060] 5. Backup Input Interfaces: These are used to connect backup devices, including portable mobile device interfaces, product upgrade interfaces, and emergency fault interfaces. The portable mobile device interface serves as a data exchange channel when connecting portable mobile devices. The product upgrade interface provides access for new functional modules or improved signal sources during product upgrades, eliminating the need for large-scale modifications to the existing system. The emergency fault interface allows for rapid connection to a backup signal source when the main input signal is abnormal due to line damage, signal source failure, electromagnetic interference, or other reasons, maintaining basic system functionality. For example, in an elevator control system, if the main sensor signal is interrupted, the backup sensor signal ensures the elevator can still safely stop and level, preventing elevator shutdowns or accidents due to signal failures and guaranteeing continuous and stable equipment operation.

[0061] 6. Main Unit Brake Interface: Used to connect control circuits and monitoring devices related to the main unit brake, enabling precise control and status monitoring of the main unit brake. This ensures accurate and reliable operation of the main unit brake, timely response to control system commands, prevention of accidental rotation of the main unit, and improvement of the traction machine's operational safety and stability.

[0062] In this embodiment of the invention, a first interface is disposed on a first interface board, a second interface on a second interface board, a third interface on a third interface board, and a fourth interface on a fourth interface board. The first, second, third, and fourth interface boards are connected to the main control board via ribbon cables to achieve layered signal transmission. For example, the first and second interfaces and the external third and fourth interfaces are respectively connected to the main control board via 40P ribbon cables to achieve layered signal transmission. Layered transmission can reduce interference between different types of signals. For example, the internal control signals of the first and second interfaces and the external control signals of the third and fourth interfaces are transmitted in layers, avoiding interference from high-voltage signals to low-voltage control signals and sensor signals, ensuring accurate transmission of elevator control commands, preventing elevator malfunctions due to signal disorder, and improving operational stability and safety. At the same time, it makes the wiring layout more organized, and the signal lines of different functional modules are clearly divided. When troubleshooting, maintenance personnel can quickly locate the corresponding interface board and line based on the signal layering, shortening the troubleshooting time and reducing maintenance difficulty and cost. The organized wiring layout is also beneficial for the installation and upgrading of the elevator system. When the elevator control system needs functional expansion, the layered transmission structure allows for easier integration of new equipment or functional modules. Newly added signals can be connected to the corresponding interface boards according to their functional characteristics and transmitted layered to the main control board via 40-pin ribbon cables, without requiring large-scale modifications to the existing wiring, thus enhancing the system's scalability and adaptability.

[0063] This embodiment utilizes the large data transmission capacity of the ribbon cable and combines it with a layered transmission method to enable different types of signals to be transmitted in parallel, fully leveraging the data transmission capability of the ribbon cable, improving signal transmission efficiency, and allowing the main control board to quickly receive and process various types of data, thereby achieving more precise and efficient control of the elevator.

[0064] This embodiment also provides a traction machine, including the elevator controller of any of the above embodiments. The safety monitoring device includes an encoder, which is fixed to the traction machine and coaxially fixed with the traction machine shaft. It is used to indirectly calculate the traction sheave speed by detecting the shaft speed.

[0065] This embodiment uses an encoder to accurately detect the motor shaft speed and calculates the traction sheave speed by combining the speed ratio of the reducer, providing accurate speed feedback information for the elevator control system. When the elevator reaches the target floor, the system uses this precise speed information to accurately control the traction machine to decelerate and stop smoothly, effectively improving the elevator's leveling accuracy and avoiding inconvenience to passengers due to excessive leveling errors, thus enhancing the riding experience. Real-time and accurate speed monitoring allows the elevator control system to dynamically adjust the traction machine speed according to actual load and operating needs, achieving energy-saving operation. For example, reducing the operating speed under light load reduces energy consumption; while reasonably increasing the speed during heavy load or peak hours improves elevator transportation efficiency. Since the encoder is coaxially fixed with the motor shaft, it can indirectly reflect the working status of the transmission system. If transmission components (such as couplings, belts, etc.) become loose or slippery, it will cause abnormal speed matching between the motor shaft and the traction sheave. The encoder can detect this change in time, allowing the system to provide early warning of potential faults and prevent the fault from escalating. The long-term accumulated encoder speed data can be used for in-depth analysis, helping maintenance personnel to understand the patterns and trends of traction machine operation. By comparing and analyzing historical data, potential equipment failures can be predicted, such as determining the wear level of motor bearings and the meshing status of reducer gears, thereby enabling the development of targeted maintenance plans and the implementation of preventative maintenance.

[0066] This embodiment also includes an elevator control system, including the traction machine described in any of the above embodiments. The elevator control system also includes various safety monitoring devices and wireless communication devices. The various safety monitoring devices and wireless communication devices are connected to an extended function interface. The various safety monitoring devices feed back safety monitoring signals to the main control board through the extended function interface. The main control board remotely interacts with the Internet of Things platform through the wireless communication devices to control the elevator operation.

[0067] In one specific embodiment, the safety monitoring device includes:

[0068] 1. Position sensor, located on the base plate of the traction machine, monitors the working status of the traction sheave by detecting the left and right yaw displacement of the traction sheave. The position sensor is fixed to the expansion function interface via a wiring harness.

[0069] By monitoring the lateral yaw displacement of the traction sheave in real time using position sensors, early warnings can be issued for potential abnormal wear of the traction sheave, wire rope slippage, or even derailment if the yaw exceeds the normal range. This prevents elevator malfunctions caused by abnormal traction sheave operation, effectively ensuring passenger and equipment safety. Position sensors are installed on the traction machine base plate and connected to an expansion interface via wiring harnesses. This allows for precise location of the traction sheave component fault when abnormal yaw is detected, facilitating rapid problem identification by maintenance personnel and improving fault diagnosis efficiency. The yaw displacement data collected by the sensors can serve as a basis for operation and maintenance analysis. By analyzing historical data, the wear trend and service life of the traction sheave can be predicted, helping to develop more scientific and reasonable maintenance plans and achieving a shift from reactive maintenance to proactive prevention in operation and maintenance.

[0070] 2. Temperature sensor, pre-embedded in the stator assembly of the traction machine, with its lead wire terminals fixed to the expansion function interface through holes on the rear housing of the traction machine, for real-time monitoring of the temperature of the stator assembly.

[0071] If the stator assembly of a traction machine motor does not heat up during operation and is not monitored in time, it may lead to serious malfunctions such as insulation aging and coil burnout due to excessive temperature. Temperature sensors embedded in the motor stator assembly can directly and accurately acquire the real-time temperature of the stator. Once the temperature exceeds the safety threshold, it can promptly trigger an early warning or protection mechanism to prevent motor damage due to overheating, effectively ensuring the safe and stable operation of the motor and extending its service life. Simultaneously, the real-time temperature data collected by the temperature sensor can serve as an important basis for equipment maintenance analysis. By analyzing historical temperature data, the monitoring backend can understand the motor's heating patterns and temperature change trends, predict the motor's health status and service life, and help formulate more scientific and reasonable maintenance plans, achieving a shift from passive repair to proactive prevention and reducing maintenance costs. The temperature sensor's lead wire terminals are fixed to the expansion function interface. This standardized connection method facilitates the installation, removal, and replacement of the sensor, and also facilitates the integration of temperature monitoring data into the control system, simplifying maintenance procedures and reducing maintenance difficulty.

[0072] 3. Vibration Sensor: The first vibration sensor is arranged on the bearing housing surface of the non-drive end and the drive end of the drive motor to monitor the radial or axial vibration signals of the front / rear bearings of the motor. The first vibration sensor is arranged on the bearing housing surface of the non-drive end (motor rear housing) and the drive end (reducer rear housing) to monitor the radial or axial vibration signals of the front / rear bearings of the motor. In the early stages of failure such as wear, poor lubrication or fatigue cracks, the vibration characteristics of the bearing will change slightly. The sensor can detect these abnormal vibrations in time and issue an early warning before the failure worsens, so as to avoid serious accidents such as motor jamming or stoppage caused by bearing failure and ensure the safe operation of the elevator.

[0073] 4. A second vibration sensor, located in the bearing area of ​​the traction sheave, is used to monitor vibration signals related to wire rope tension and sheave groove wear. The second vibration sensor is positioned in the bearing area of ​​the traction sheave (front and rear covers of the traction sheave) to effectively monitor changes in wire rope tension and abnormal vibrations caused by sheave groove wear. Uneven wire rope tension can easily lead to slippage and breakage risks, while sheave groove wear affects traction capacity. By monitoring relevant vibration signals, such potential hazards can be detected in a timely manner, preventing elevator malfunctions caused by wire rope or sheave groove problems and ensuring passenger safety.

[0074] By using two types of vibration sensors to monitor different parts, abnormal vibration signals can be detected, allowing direct location of the faulty component. For example, abnormal vibration in the motor bearing indicates a problem with the bearing itself; abnormal vibration in the traction sheave area points to the wire rope or sheave groove, helping maintenance personnel quickly pinpoint the fault, reducing troubleshooting time and improving maintenance efficiency. Different types of faults produce vibration signals with unique characteristics. The monitoring system can further deduce the specific cause of the fault through spectrum analysis and waveform analysis of these vibration signals. For instance, by analyzing the vibration frequency components, it can determine whether bearing wear is ball wear or raceway wear, providing more detailed information for maintenance.

[0075] 5. Image acquisition device, used to monitor the tension of the wire rope or the offset of the guide rail.

[0076] Image acquisition devices (such as high-definition infrared cameras) can capture subtle changes imperceptible to the human eye (such as the initial stage of a single wire breakage in a steel wire rope or millimeter-level misalignment of a guide rail). Backend monitoring algorithms analyze these changes and provide early warnings, preventing potential problems from escalating into serious malfunctions. For example, if one or two wires in a single strand of a steel wire rope are broken, manual inspection may easily miss them, but image recognition can use edge detection algorithms to pinpoint the broken wires and trigger an alert. Simultaneously, by combining parameters such as equipment operating speed and load weight, the deformation trend in the image data can be analyzed to predict the remaining lifespan of components. For instance, if the guide rail misalignment increases linearly with operating time, it indicates potential bolt loosening or bracket deformation, requiring immediate repair. This monitoring method eliminates the need for equipment shutdown and disassembly, reducing maintenance time and costs through remote camera monitoring.

[0077] The elevator control system provided in this embodiment, through the architecture design of traction machine integrated controller combined with extended function interface, safety monitoring and wireless communication, not only achieves breakthroughs in safety performance, operation and maintenance efficiency and cost control, but also lays the foundation for the elevator industry to transform towards service and digitalization through data interconnection.

[0078] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An elevator controller, characterized by Installed on the traction machine, the elevator controller includes: a main control board and an interface board connected to the main control board. The main control board is used to control the operation of the elevator. The interface board is provided with an internal interface and an external interface. The main control board transmits signals to the inside of the elevator control system through the internal interface and transmits signals to the outside of the elevator control system through the external interface. The internal interface includes an expansion function interface, which is used to connect various safety monitoring devices for monitoring the elevator status and wireless communication equipment.

2. The elevator controller of claim 1, wherein, The internal interface includes a first interface and a second interface, and a switching power supply is connected between the first interface and the second interface for supplying power to the elevator controller. The first interface includes: an electrical safety door lock detection interface, a DC24V power supply detection interface, a contactor control interface, an emergency electric switch interface, and a power input interface. The second interface includes: the pre-opening function interface and the extended function interface.

3. Elevator controller according to claim 1 or 2, characterized in that, The external interfaces include the third interface and the fourth interface, among which: The third interface includes: shaft safety cable interface, traveling cable interface, external call communication cable interface, pit intercom cable interface, and deceleration switch cable interface; The fourth interface includes: a brake power interface, a car power interface, a handwheel switch interface, a mains power interface, a speed governor switch interface, a backup input interface, and a main brake interface; the backup input interface is used to connect backup equipment.

4. The elevator controller according to claim 3, characterized in that, The first interface is located on the first interface board, the second interface is located on the second interface board, the third interface is located on the third interface board, and the fourth interface is located on the fourth interface board. The first, second, third, and fourth interface boards are connected to the main control board via ribbon cables to achieve layered signal transmission.

5. A machine according to claim 4, characterized in that The elevator controller includes any one of claims 1 to 4, wherein the traction machine is connected to the elevator controller; the safety monitoring device includes an encoder, which is fixed to the traction machine and coaxially fixed to the traction machine shaft, and is used to indirectly calculate the traction sheave speed by detecting the shaft speed.

6. An elevator control system, characterized by Including the traction machine as described in claim 5, the elevator control system further includes multiple safety monitoring devices and wireless communication devices. The multiple safety monitoring devices and the wireless communication devices are connected to the extended function interface. The multiple safety monitoring devices feed back safety monitoring signals to the main control board through the extended function interface. The main control board remotely interacts with the Internet of Things platform through the wireless communication devices to control the elevator operation.

7. The elevator control system of claim 6, wherein, The safety monitoring device includes a position sensor, which is arranged on the base plate of the traction machine. The position sensor monitors the working status of the traction wheel by detecting the left and right yaw displacement of the traction wheel. The position sensor is fixed to the expansion function interface by a wiring harness.

8. The elevator control system of claim 6, wherein, The safety monitoring device includes a temperature sensor, which is embedded in the stator assembly of the traction machine. Its lead-out terminals are fixed to the expansion function interface through holes on the rear shell of the traction machine, and are used to monitor the temperature of the traction machine in real time.

9. The elevator control system of claim 6, wherein, The safety monitoring device includes: a first vibration sensor, arranged on the bearing housing surface of the non-drive end and drive end of the traction machine, for monitoring the radial or axial vibration signals of the front / rear bearings of the traction machine; The second vibration sensor is arranged in the traction sheave bearing area for monitoring the vibration signal of the steel wire rope tension and the wheel groove wear.

10. The elevator control system of claim 6, wherein, The safety monitoring device comprises an image acquisition device for monitoring the steel wire rope elongation or the guide rail offset.

Images