An electrical topology of an elevator control system

Abstract

An electrical topology of an elevator control system comprises: at least one elevator control cabinet, at least one communication loop between any two elevator control cabinets, the communication loop for information interaction; when any elevator control cabinet detects a safety action signal, the safety action signal is transmitted to another elevator control cabinet connected thereto through the communication loop; when any elevator control cabinet receives a safety action signal through the communication loop, it determines whether to generate a safety instruction according to its own state signal; after any elevator control cabinet receives a safety action signal, it determines whether to generate a safety instruction by itself, thereby realizing diffusion transmission of the safety action signal, and each elevator control cabinet can timely synchronize safety action with the elevator control cabinet transmitting the safety action signal according to the safety action signal and its own state.

Description

Technical Field

[0001] This invention relates to the field of multi-elevator control system technology, and in particular to an electrical topology of an elevator control system. Background Technology

[0002] When multiple elevators operate independently within the same elevator shaft, if one elevator experiences a malfunction, it needs to be repaired separately. However, the other elevators are operating normally. The elevators operating normally can affect the repair of the malfunctioning elevator and pose a certain danger to passengers in the elevators operating normally. Current technology typically uses a separate control cabinet to synchronously control all elevators to activate their corresponding safety devices when a problem occurs, ensuring that all elevators enter a safe state simultaneously and avoiding safety hazards. However, the existing control schemes still have the risk of malfunction.

[0003] For example, a "Dual-Car Elevator Safety Management System" disclosed in Chinese patent literature, publication number CN117284892A, discloses a system including a safety cabinet, multiple safety devices installed in the upper car elevator, and multiple safety devices installed in the lower car elevator. Each safety device corresponds to a safety function. For the same safety function, the upper car elevator and the lower car elevator are each equipped with a safety device having that safety function. The safety cabinet is used to collect the first detection signal and the second detection signal of the safety device with the same safety function as the activated safety device in the upper car elevator and the lower car elevator, respectively, when the safety device of one car is detected to be activated. Based on the first detection signal or the second detection signal, a safety function co-operation table pre-stored in the safety cabinet is used to determine whether the activated safety device can simultaneously control the other car. If so, a safety command is sent to the safety device of the other car to simultaneously realize the control of the upper car elevator and the lower car elevator. However, this solution still has the risk of malfunction, which may cause the car to be unable to perform a safety action. Summary of the Invention

[0004] To address the problem of safety action failure in multiple elevator cars in existing technologies, this invention provides an electrical topology for an elevator control system. The elevator control cabinet exchanges safety action signals through a communication loop and generates its own safety commands by combining these signals with its own status signals.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An electrical topology for an elevator control system includes: at least one elevator control cabinet, wherein at least one communication loop exists between any two elevator control cabinets, and the communication loop performs information exchange.

[0007] When any elevator control cabinet detects a safety action signal, it transmits the safety action signal to another elevator control cabinet connected to it through a communication loop.

[0008] When any elevator control cabinet receives a safety action signal through the communication loop, it determines whether to generate a safety command based on its own status signal. The communication loop directly connects any elevator control cabinet to another, simultaneously transmitting the safety action signal. This allows any elevator control cabinet to transmit its safety action signal to another, and upon receiving the signal, it independently determines whether to generate a safety command. This achieves the propagation of the safety action signal, enabling each elevator control cabinet to synchronize its safety actions with the cabinet that received the signal, based on the safety action signal and its own status.

[0009] Preferably, the elevator control cabinet is connected to a safety device, which includes a common safety device connected to each elevator control cabinet and an independent safety device connected to each elevator control cabinet separately.

[0010] The safety devices generate safety action signals based on their own safety status. Different safety devices correspond to safety actions at different locations, thereby generating safety action signals with different locations and safety functions, and these safety signals are directly sent to the elevator control cabinet.

[0011] Preferably, the common safety device includes a pit safety device, which generates a universal safety action signal for any elevator control cabinet based on its own safety status. The pit safety device enables the acquisition of pit safety action signals that affect multiple elevators simultaneously.

[0012] Preferably, each elevator control cabinet is connected to a corresponding car, and the independent safety device generates a unique safety action signal for that elevator control cabinet based on the car's own status signal. Each independent safety device is independently installed in each car and generates a corresponding safety action signal based on the car's own status signal, thus achieving the generation of an independent safety action signal for each car.

[0013] Preferably, when any elevator control cabinet interacts with information, it acquires all safety action signals of the other elevator control cabinet connected to it.

[0014] When all safety action signals of another elevator control cabinet overlap with the safety action signals detected by the elevator control cabinet itself, a decision is made on whether to generate a safety command. Through information exchange, any elevator control cabinet can obtain the safety action signals of the other elevator control cabinet connected to it. This allows any elevator control cabinet to obtain the real-time status of the other elevator control cabinet and, based on the other elevator control cabinet's safety action signals, to determine whether the safety action of the other elevator control cabinet will affect the aforementioned elevator control cabinet, thus enabling the transmission of safety action signals between elevator control cabinets.

[0015] Preferably, when determining whether a security instruction is generated upon entry, the security status corresponding to its own status signal is obtained.

[0016] When the safety status reaches its own threshold, the elevator control cabinet generates a corresponding safety command. It determines the status of its own safety action devices through its own status signals, and then judges whether the corresponding safety action status needs to be changed based on its own threshold, thereby enabling it to determine whether to synchronize safety actions with another elevator control cabinet based on its own status.

[0017] Preferably, the method further includes that any elevator control cabinet sends a safety instruction to another elevator control cabinet through a communication loop, and the other elevator control cabinet executes the safety instruction synchronously.

[0018] When any elevator control cabinet receives a safety command through the communication loop, its independent safety device executes the command. After generating the safety command, it indicates that the elevator control cabinet needs to perform the same safety action synchronously with another elevator control cabinet. Since the safety action of the car corresponding to the first elevator control cabinet will affect the car corresponding to the second elevator control cabinet, the safety command is sent back to the second elevator control cabinet through the communication loop. This signifies that the first elevator control cabinet is informing the second elevator control cabinet of its agreed-upon safety action. Therefore, upon receiving the safety command, each elevator control cabinet executes the command according to its own independent safety device corresponding to its car, ensuring safety between the car and the elevator and achieving synchronization of multiple elevator control cabinets.

[0019] Preferably, the self-state signal includes a door state signal and a position signal, and the elevator control cabinet generates the door state signal and position signal according to the self-state of the corresponding car.

[0020] The elevator control cabinet performs landing door lock detection based on door status and position signals. The door status signal determines the door status and position of the corresponding elevator car for that control cabinet, allowing each control cabinet to obtain relevant operating parameters for its corresponding car.

[0021] Preferably, the door status signals include car door signals and floor door signals; the car door signals include the car door status signals of any elevator control cabinet corresponding to the car, and the floor door signals include the floor door status signals of any elevator control cabinet corresponding to the floor the car has reached. The car door status signals determine the status of the car door corresponding to the elevator control cabinet, and the floor door signals determine the opening / closing status of the door to the floor the car has reached, thereby enabling each elevator control cabinet to obtain the relevant operating parameters of its corresponding car.

[0022] Preferably, the elevator control cabinet also transmits door status signals and position signals to another elevator control cabinet connected to it via a communication loop.

[0023] The self-state mentioned includes the car door status signal and the arrival floor door status signal of the car corresponding to any elevator control cabinet. The transmission of operation-related parameters of the car corresponding to the elevator control cabinet is achieved through a communication loop, enabling any elevator control cabinet to obtain operation-related parameters of another elevator control cabinet, and then make a judgment based on the status of the car corresponding to that other elevator control cabinet.

[0024] The present invention has the following advantages:

[0025] (1) A communication loop is used to directly connect any elevator control cabinet to another elevator control cabinet and transmit safety action signals. This allows any elevator control cabinet to transmit safety action signals to another elevator control cabinet. When any elevator control cabinet receives a safety action signal, it can determine whether to generate a safety instruction. This enables the propagation of safety action signals. Each elevator control cabinet can perform synchronous safety actions with the elevator control cabinet that transmitted the safety action signal based on the safety action signal and its own status. (2) Information interaction enables any elevator control cabinet to obtain the safety action signal of another elevator control cabinet connected to it. This allows any elevator control cabinet to obtain the real-time status of another elevator control cabinet and to judge the safety instruction based on the safety action signal of another elevator control cabinet. This determines whether the safety action of another elevator control cabinet will affect the elevator control cabinet. This enables the transmission of safety action signals between elevator control cabinets. (3) Any elevator control cabinet tells the other elevator control cabinet that it agrees to perform a safety action. Therefore, after receiving a safety instruction, any elevator control cabinet executes the safety instruction based on the independent safety device corresponding to its own car to ensure safety between the car and achieve synchronous operation of multiple elevator control cabinets. Attached Figure Description

[0026] The accompanying drawings described below are merely exemplary. Those skilled in the art can derive other embodiments based on the provided drawings without any inventive effort.

[0027] Figure 1 This is a schematic diagram of the working logic in one embodiment.

[0028] Figure 2 This is a schematic diagram of the connection relationship in one embodiment.

[0029] In the picture:

[0030] 1-Upper car control cabinet; 2-Lower car control cabinet; 3-Upper car; 4-Lower car; 5-Safety device. Detailed Implementation

[0031] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1: As Figures 1-2 As shown, in a preferred embodiment, the present invention discloses an electrical topology for an elevator control system, comprising: at least one elevator control cabinet; wherein the at least one elevator control cabinet controls at least one car located in the same pit. Each elevator control cabinet operates independently, and each elevator control cabinet controls the corresponding car to perform its functions.

[0033] There is at least one communication loop between any two elevator control cabinets, and the communication loop facilitates information exchange. The communication loop includes at least one, and there are at least one or more communication loops located between any two elevator control cabinets. The elevator control cabinet communicates with any other connected elevator control cabinet through the communication loop. Any elevator control cabinet can both receive interactive information from other elevator control cabinets and send interactive information to any other connected elevator control cabinet through the communication loop.

[0034] When any elevator control cabinet detects a safety action signal, it transmits this signal to another connected elevator control cabinet via a communication loop. This communication loop allows the safety action signal to be directly transmitted from one elevator control cabinet to another connected to it. This ensures that when any elevator control cabinet generates a safety action signal, the signal can be propagated along the communication loop to nearby elevator control cabinets. This allows elevator control cabinets closer to the source of the safety action signal to receive it more quickly, while those farther away receive it sequentially. This also allows elevator control cabinets closer to the source of the safety action signal to perform synchronous control more quickly, improving the safety response rate.

[0035] When any elevator control cabinet receives a safety action signal through the communication loop, it determines whether to generate a safety command based on its own status signal. The direct transmission of safety action signals between elevator control cabinets allows each cabinet to directly receive signals from other control cabinets, enabling it to quickly determine whether to generate a safety command based on its own status signal. Based on the safety command, the cabinet synchronizes with the other control cabinet, achieving synchronized safety actions. Furthermore, when there are two elevator control cabinets, they synchronize each other's safety action information, and when they determine they need to generate a safety command, they transmit the command through the communication loop and perform synchronized safety actions. When there are two or more elevator control cabinets, after any one elevator control cabinet generates a safety action signal, the safety action signal is propagated along the communication loop starting from that elevator control cabinet until all elevator control cabinets receive the safety action signal. When any other elevator control cabinet determines that a safety command has been generated, the safety command is propagated along the communication loop, thereby enabling all elevator control cabinets to perform synchronous control of the safety command starting from any other elevator control cabinet.

[0036] In use, this solution directly connects any elevator control cabinet to another elevator control cabinet via a communication loop, simultaneously transmitting safety action signals. This allows any elevator control cabinet to transmit safety action signals to another elevator control cabinet. Upon receiving a safety action signal, any elevator control cabinet can independently determine whether to generate a safety command, thereby achieving the propagation of safety action signals. Each elevator control cabinet can promptly perform synchronized safety actions based on the safety action signal and its own status, in conjunction with the elevator control cabinet that received the safety action signal.

[0037] In other embodiments, the elevator control cabinet is connected to a safety device that provides a safety action for the elevator car corresponding to the control cabinet or for all elevator cars in the pit. The elevator control cabinet generates a safety action signal based on the status of the safety device. Alternatively, when the safety device activates, it sends a safety action signal to the elevator control cabinet.

[0038] The safety devices include a common safety device connected to each elevator control cabinet and independent safety devices connected to each elevator control cabinet. When the common safety device activates, all elevator cars in the tunnel change their corresponding safety states. When an independent safety device activates, the elevator cars connected to that independent safety device change their corresponding safety states. Each car has a corresponding safety state for its own independent safety device, and each car has the same safety state for the elevator cars connected to it. When a safety state changes, a corresponding safety action signal is generated.

[0039] The safety devices generate safety action signals based on their own safety status. Different safety devices correspond to safety actions at different locations, thereby generating safety action signals with different locations and safety functions, and these safety signals are directly sent to the elevator control cabinet.

[0040] In other embodiments, the common safety device includes a pit safety device, which generates a universal safety action signal for any elevator control cabinet based on its own safety status. The pit safety device enables the acquisition of pit safety action signals that affect multiple elevators simultaneously. Multiple pit safety devices are included, and each of these devices is capable of issuing a safety action signal. Each pit safety device is connected to any elevator control cabinet. When any pit safety device generates a safety action signal, that signal is collected by any elevator control cabinet.

[0041] In other embodiments, each elevator control cabinet is connected to a corresponding car. Each elevator control cabinet independently determines the safety of its connected car, and each car's independent safety device is controlled by its respective elevator control cabinet. Each elevator control cabinet controls its own car. This ensures that each car has a dedicated elevator control cabinet, resulting in high reliability.

[0042] The independent safety device generates a unique safety action signal for the elevator control cabinet based on the status signal of the corresponding car. Each independent safety device is independently installed in each car and generates a corresponding safety action signal based on the status signal of that car. This achieves the generation of an independent safety action signal for each car.

[0043] In other embodiments, when any elevator control cabinet interacts with other elevator control cabinets, it acquires all safety action signals from another elevator control cabinet connected to it. This allows each safety action signal to be transmitted between any two elevator control cabinets, and to propagate through any other elevator control cabinet. When there are multiple elevator control cabinets, the safety action signals can be transmitted along each elevator control cabinet.

[0044] When all safety action signals from another elevator control cabinet overlap with the safety action signals detected by the elevator itself, a decision is made on whether to generate a safety command. After a safety action signal is transmitted, the elevator control cabinet that receives the signal evaluates it and then generates a safety command specific to itself. This safety command is based on the transmitted safety action signal and the elevator's own current state.

[0045] In use, information interaction enables any elevator control cabinet to obtain the safety action signal of another elevator control cabinet connected to it. Thus, any elevator control cabinet can obtain the real-time status of the other elevator control cabinet and judge the safety command based on the safety action signal of the other elevator control cabinet to determine whether the safety action of the other elevator control cabinet will affect the arbitrary elevator control cabinet, thereby realizing the transmission of safety action signals between elevator control cabinets.

[0046] In other embodiments, when determining whether to generate a safety command upon entry, the safety status corresponding to its own status signal is obtained. At this time, any elevator control cabinet determines whether the received safety action signal overlaps with its own corresponding car's status. If they overlap, the safety status of the overlapping portion is obtained. A safety command is then generated based on the safety status of this overlapping portion.

[0047] After any elevator control cabinet judges the received safety action signal, it performs a threshold judgment on the selected safety states. When a safety state reaches its own threshold, the elevator control cabinet generates a safety command corresponding to that safety state. At this time, the safety command combines the transmitted safety action signal and is generated based on the actual state of its corresponding car, therefore the safety command is unique.

[0048] During use, the system determines the status of its own safety action device through its own status signal, and then judges whether the corresponding safety action status needs to be changed based on its own threshold, thereby realizing whether to perform safety actions synchronously with another elevator control cabinet based on its own status.

[0049] In other embodiments, the method further includes having any elevator control cabinet send a safety command to another elevator control cabinet via a communication loop, thereby transmitting the safety command through the communication loop and synchronizing the state of the remaining elevator control cabinets. In this case, the elevator control cabinet transmitting the safety action signal and the elevator control cabinet receiving the safety action signal synchronize their states.

[0050] The other elevator control cabinet executes the safety command synchronously. This achieves synchronous control between the elevator control cabinet transmitting the safety action signal and the elevator control cabinet receiving the safety action signal. When any elevator control cabinet receives a safety command through the communication loop, its independent safety device executes the safety command.

[0051] After a safety instruction is generated, it means that any elevator control cabinet needs to perform the same safety action synchronously with another elevator control cabinet. At this time, the safety action of the car corresponding to any elevator control cabinet will affect the car corresponding to the other elevator control cabinet. Therefore, the safety instruction is sent back to the other elevator control cabinet through the communication loop, which means that the elevator control cabinet tells the other elevator control cabinet that it agrees to perform the safety action. Therefore, after receiving the safety instruction, any elevator control cabinet executes the safety instruction according to the independent safety device corresponding to its own car to ensure safety between the car and achieve synchronization of multiple elevator control cabinets.

[0052] In other embodiments, this includes determining the door status signals of the elevator doors and floor doors, as well as the position status signal of the car's height; using the door status signals to determine the door status and position status of the corresponding car for each elevator control cabinet, enabling each elevator control cabinet to obtain the operation-related parameters of its corresponding car. The elevator control cabinet then performs floor door lock detection based on the door status and position signals. This achieves the corresponding...

[0053] In other embodiments, the door status signals include car door signals and floor door signals. The car door status signal determines the status of the car door corresponding to the elevator control cabinet, and the floor door signal determines the opening / closing status of the elevator control cabinet corresponding to the floor the car has reached.

[0054] The car door signal includes the car door status signal corresponding to any elevator control cabinet and the floor door signal includes the floor door status signal corresponding to any floor reached by any elevator control cabinet. This allows each elevator control cabinet to obtain the relevant operating parameters of its corresponding car.

[0055] In other embodiments, the method further includes transmitting door status signals and position signals from any elevator control cabinet to another elevator control cabinet connected to it via a communication loop; and transmitting operation-related parameters of the car corresponding to the elevator control cabinet via the communication loop.

[0056] The self-state mentioned includes the car door status signal and the arrival floor door status signal of the car corresponding to any elevator control cabinet. This allows any elevator control cabinet to obtain the operation-related parameters of another elevator control cabinet, and then make a judgment based on the status of the car corresponding to that other elevator control cabinet.

[0057] In other embodiments, the elevator control cabinet includes an upper car control cabinet 1 and a lower car control cabinet 2. The upper car control cabinet 1 has multiple upper car elevator machine room installation positions a1-an arranged sequentially, and the lower car control cabinet 2 has multiple lower car elevator machine room installation positions b1-bn arranged sequentially. The upper car control cabinet 1 is connected to an upper car 3, and the upper car 1 is equipped with PS1-1, PS1-2, and safety device 5. The lower car control cabinet 2 is connected to a lower car 4, and the lower car 4 is also equipped with the same PS2-1, PS2-2, and safety device 5. The safety device of the upper car 3 or the lower car 4 is only connected to the corresponding elevator control cabinet. The upper car control cabinet and the lower car control cabinet are simultaneously connected to a common safety device, which includes multiple pit safety devices c1-cn arranged sequentially.

[0058] During operation, the upper and lower car control cabinets exchange information. This exchange includes, but is not limited to, emergency states triggered by the anti-collision system or the common safety switch, as well as door zone signals, door opening / closing signals, and door position signals. The detection of the anti-collision system, landing door safety devices, and pit safety devices is independently calculated and judged by the upper and lower car control cabinets. From a system perspective, this provides greater redundancy and thus higher reliability compared to systems using a safety cabinet for judgment.

[0059] In other embodiments, the elevator control cabinet includes an upper car control cabinet and a lower car control cabinet. In this solution, each elevator control cabinet is responsible for collecting its own safety signals. The upper car control cabinet collects all safety signals from the top of the upper car; the upper car control cabinet collects the position signals of both cars; and the lower car control cabinet collects all safety signals from the top of the lower car.

[0060] In other embodiments, the elevator control cabinet includes an upper car control cabinet and a lower car control cabinet. In this solution, the elevator control cabinet is responsible for collecting common safety signals. Both the upper and lower car control cabinets collect pit safety signals from the pit safety device, and both collect safety action signals from the landing door device. The upper car control cabinet collects the position signals of both cars.

[0061] In other embodiments, the elevator control cabinet includes an upper car control cabinet and a lower car control cabinet, and there is one or more communication loops between the upper car control cabinet and the lower car control cabinet. The communication loops are responsible for exchanging information. The exchanged information includes the status of the common safety switch corresponding to the upper car from the upper car control cabinet, door zone signals, door open / close signals, door open / closed position signals, and emergency status signals. The exchanged information also includes the status of the common safety switch corresponding to the lower car from the lower car control cabinet, door zone signals, door open / close signals, door open / closed position signals, and emergency status signals.

[0062] When either the upper or lower car control cabinet detects that the public safety switch is activated, it transmits this status to the other control cabinet. This also involves the exchange of signals including door zone signals, door open / close signals, and door position signals.

[0063] When either the upper or lower car control cabinet detects that its corresponding car is within the door zone, it combines the corresponding door opening / closing signal and door opening / closing position signal with the position of its respective car to determine whether the door lock of the floor for that car within the door zone is normally open or abnormally open. This completes the floor door lock detection and judgment. This allows the upper and lower car control cabinets to independently perform floor door lock detection and judgment for their respective floors.

[0064] In other embodiments, the elevator control cabinet includes an upper car control cabinet and a lower car control cabinet. The upper car control cabinet and the lower car control cabinet interact with each other via a communication loop, and this information interaction includes emergency status interaction. In this case, when either the upper car control cabinet or the lower car control cabinet detects a positional abnormality that triggers any level of anti-collision protection, or triggers a public safety switch, or detects a landing door lock device in an abnormal door opening area, the aforementioned emergency status is transmitted as an emergency status signal to the other car control cabinet via the communication loop.

[0065] In other embodiments, the communication loop includes a communication protocol, such as CAN communication, LON communication, or MODBUS communication, and the communication protocol meets the security level requirements of SIL3 or higher.

[0066] Example 2: An electrical topology of an elevator control system in this example includes an upper car control cabinet 1 and a lower car control cabinet 2 that interact with each other via signals. The upper car control cabinet 1 includes several upper car elevator machine room mounting devices, named a1 to an, and the lower car control cabinet includes several lower car elevator machine room mounting devices, named b1 to bn. The upper car control cabinet 1 and the lower car control cabinet 2 are connected to PS1-1, PS1-2, and safety device 5, respectively, and are connected to the upper car 3 and the lower car 4, respectively, through the above structure. Furthermore, the upper car control cabinet 1 and the lower car control cabinet 2 are connected to several pit mounting devices, named c1 to cn.

[0067] The aforementioned structure employs a modular design. The modular design of the upper car control cabinet 1 and the lower car control cabinet 2 makes the system more flexible, easier to maintain, and easier to expand. By connecting to the pit mounting device, the status of the elevator pit can be monitored in real time, further increasing the safety of elevator operation. Signal interaction between the upper and lower car control cabinets ensures synchronized elevator operation, improving operational efficiency.

[0068] The upper car control cabinet 1 controls the operation of the upper car elevator machine room installation devices (a1~an) to ensure the normal operation of the upper car 3. It also exchanges signals with the lower car control cabinet 2 to ensure the synchronous operation of the upper and lower cars.

[0069] The lower car control cabinet 2 controls the operation of the lower car elevator machine room installation devices (b1~bn) to ensure the normal operation of the lower car 4. It also exchanges signals with the upper car control cabinet 1 to ensure the synchronous operation of the upper and lower cars.

[0070] Safety device 5 monitors the elevator's operating status, including overload, overspeed, and door lock status. In case of abnormalities, it triggers emergency braking or takes other safety measures to ensure passenger safety. PS1-1 and PS1-2 are power supply units that provide a stable power supply to the control cabinet and other elevator components. They may include a backup power system to ensure the elevator can stop safely in the event of a power outage. The pit mounting devices c1~cn may include a backup power system to ensure the elevator can stop safely in the event of a power outage. When an abnormality occurs in the pit, an alarm signal is sent to the control cabinet for timely handling.

[0071] When signals occur or components start operating in an elevator control system, the interlocking effect and information exchange between them are achieved through a carefully designed electrical topology. The following are descriptions of several key scenarios:

[0072] Scenario 1: Elevator startup: When a passenger presses a floor button inside the car, the signal is sent to the corresponding car control cabinet (upper car control cabinet 1 or lower car control cabinet 2). When a passenger presses a floor button inside the car, the signal is sent to the corresponding car control cabinet (upper car control cabinet 1 or lower car control cabinet 2). When a passenger presses a floor button inside the car, the signal is sent to the corresponding car control cabinet (upper car control cabinet 1 or lower car control cabinet 2). When a passenger presses a floor button inside the car, the signal is sent to the corresponding car control cabinet (upper car control cabinet 1 or lower car control cabinet 2). The upper car control cabinet 1 and the lower car control cabinet 2 will conduct signal interaction to ensure synchronous operation between the two elevators (if any) and avoid conflicts.

[0073] Scenario 2: Fault during elevator operation: The safety device 5 continuously monitors the operating status of the elevator, including speed, position, etc. If overspeed, overload or other abnormal conditions are detected, the safety device will immediately trigger emergency braking and send an alarm signal to the car control cabinet. After receiving the alarm signal, the car control cabinet will stop the elevator operation and inform the passengers that the elevator has stopped running through the display screen or voice prompt. After receiving the alarm signal, the car control cabinet will stop the elevator operation and inform the passengers that the elevator has stopped running through the display screen or voice prompt.

[0074] Scenario 3: Elevator arrives at the target floor: The car control cabinet determines that the elevator has arrived at the target floor through sensors or other devices. The car control cabinet sends a signal to the elevator door control system to command the elevator doors to open. When passengers enter and exit the elevator, the weight sensor inside the car will detect the change and send a signal to the car control cabinet. If there are still passengers in the car or a new floor request is received, the car control cabinet will restart the elevator; otherwise, the elevator will enter the standby mode and wait for the next request.

[0075] Through the descriptions of these scenarios, it can be learned how each component in the elevator control system ensures the efficient and safe operation of the elevator through signal exchange and interlocking. The design of this electrical topology fully considers various situations and requirements of elevator operation, providing passengers with a safe and comfortable riding experience.

[0076] The above structure operates as follows: The random elevator control cabinet acquires a safety action signal and determines whether the safety action signal has been received from the communication loop. If not, the safety action signal is transmitted through the communication loop, and the safety action signal is acquired and determined again until it is acquired. Then, it receives a safety signal from another elevator control cabinet, and determines whether a corresponding safety command has been generated based on its own status and the safety action signal. If no command has been generated, the safety action signal is transmitted to the next elevator control cabinet through the communication loop, and the elevator control cabinet is allowed to acquire the safety action signal again. This cycle continues until a corresponding safety command is generated. The safety command is transmitted through the communication loop, and safety actions are performed synchronously until all safety action signals from all elevator control cabinets have been received. Finally, the independent safety devices are controlled to operate according to the safety command, and the cycle ends.

[0077] Furthermore, the above process can be described in detail as follows:

[0078] During the initialization phase, after the elevator control system starts up, all elevator control cabinets enter standby mode, awaiting safety action signals or operating commands. Each elevator control cabinet continuously monitors the safety status of the elevator system through its connected safety device.

[0079] During the safety action signal acquisition and judgment phase, each elevator control cabinet continuously monitors the safety status of the elevator system through its connected safety device. If the signal is not triggered directly by the local safety device (i.e., from a communication loop), the upper car control cabinet 1 immediately enters the safety command generation process; if the signal is transmitted from the lower car control cabinet 2, the upper car control cabinet 1 continues with the following steps: The upper car control cabinet 1 checks its own status signals (such as door status signals, position signals, etc.) to determine whether the elevator is currently under safe operating conditions. If the conditions are met, the upper car control cabinet 1 enters the safety command generation process; if the conditions are not met (e.g., the elevator is in operation), the upper car control cabinet 1 does not generate a safety command but continues to monitor the safety action signals.

[0080] The generation and transmission of safety commands: When the upper car control cabinet 1 determines that a safety command needs to be generated, it generates the corresponding safety command based on the type and content of the safety action signal. Upper car control cabinet 1 transmits the safety command to all other elevator control cabinets via a communication loop. The elevator control cabinet receiving the safety command (such as lower car control cabinet 2) determines whether to execute the safety command based on its own status signals. If the conditions are met, lower car control cabinet 2 executes the safety command, such as stopping the elevator or closing the elevator doors; if the conditions are not met (e.g., the elevator corresponding to lower car control cabinet 2 is already in a safe state), lower car control cabinet 2 records the command but does not execute it.

[0081] During the synchronized safety action and confirmation phase, after receiving the safety command and executing the corresponding safety action, all elevator control cabinets send a confirmation signal through the communication loop to indicate that the safety action has been completed. Once all elevator control cabinets have sent confirmation signals, the system terminates the current safety action process and awaits the next safety action signal or operating command.

[0082] During the fault and handling recording phase, if an elevator control cabinet malfunctions or fails to execute safety commands during the execution of safety actions, it should immediately send a fault signal through the communication loop. Upon receiving the fault signal, the system will trigger the corresponding fault handling mechanism, such as activating the backup power supply or notifying maintenance personnel. The system will record all safety action signals, safety commands, confirmation signals, and fault signals for subsequent analysis and tracing.

[0083] The elevator control system, through the aforementioned workflow stages, offers significant benefits, primarily in the following aspects: Enhanced safety: By monitoring the elevator system's safety status in real time, the elevator control cabinet can quickly respond to safety action signals, ensuring immediate action in case of abnormalities, such as stopping the elevator or closing the elevator doors, effectively preventing potential safety accidents. Improved coordination: The communication links between elevator control cabinets enable efficient collaborative operation. When one control cabinet detects a safety action signal, it can quickly transmit the signal to other control cabinets, ensuring all elevators execute safety commands synchronously, improving the overall system's response speed and safety.

[0084] Intelligent Decision-Making: The elevator control cabinet can intelligently determine whether to generate a safety command based on received safety action signals and its own status signals. This intelligent decision-making mechanism ensures that the elevator system can react correctly in different situations, improving the system's adaptability and reliability. Real-Time Feedback and Confirmation: After a safety command is executed, the elevator control cabinet sends a confirmation signal to indicate that the safety action has been completed. This real-time feedback mechanism helps the system promptly confirm the execution status of safety actions, ensuring that all elevators have performed the corresponding safety operations according to the instructions.

[0085] Fault Handling and Recording: The system can record all safety action signals, safety commands, confirmation signals, and fault signals, providing strong support for subsequent fault analysis and tracing. Simultaneously, the system can trigger corresponding fault handling mechanisms, such as activating backup power or notifying maintenance personnel, ensuring that measures can be taken quickly in the event of a fault to minimize its impact on the elevator system.

[0086] Flexibility and scalability: The electrical topology of the elevator control system allows for flexible adjustment and expansion according to actual needs. This flexibility and scalability enable the system to adapt to elevator systems of different sizes and requirements, improving the system's adaptability and flexibility.

[0087] In summary, these benefits of elevator control systems collectively improve the safety, reliability, intelligence, and fault handling capabilities of elevator systems, providing passengers with a safer, more comfortable, and more convenient elevator riding experience.

[0088] Example 3: This example describes the electrical topology of an elevator control system, further based on Example 2. The elevator control system is built on an innovative electrical topology, which uses multiple elevator control cabinets as its core, forming an interconnected network. Each control cabinet is specifically responsible for monitoring and managing its associated elevator and maintains real-time communication with other control cabinets via communication links. The number of elevator control cabinets in the system can be increased or decreased according to actual needs. Each control cabinet operates independently, managing all operations of its respective elevator. The communication link serves as a bridge connecting the various control cabinets, employing advanced communication technology to ensure high-speed and stable data transmission. The safety devices within the system are divided into global and local types. Global safety devices, such as pit safety devices, monitor critical areas of the entire elevator system; local safety devices target each car, ensuring the safety of passengers within the car.

[0089] The linkage mechanism works by the fact that once an elevator control cabinet detects an anomaly or safety threat (such as overload or overspeed), it immediately broadcasts this information to other control cabinets via a communication link. This real-time communication ensures that all control cabinets can react quickly to potential threats. The control cabinet receiving the safety action signal will intelligently determine whether to generate a safety command based on its own status and preset safety thresholds. Once the command is generated, it will be quickly transmitted to other control cabinets via the communication link, ensuring that all elevators can synchronously execute the corresponding safety measures. In addition to safety information, the elevator control cabinets also share their operating parameters in real time, such as door status and car position. This information sharing enables the entire system to more accurately predict and respond to various situations, ensuring efficient and safe elevator operation.

[0090] The advantages of the electrical topology and linkage mechanism of the elevator control system are mainly reflected in the following aspects:

[0091] Highly efficient collaborative operation: Thanks to its innovative electrical topology and advanced communication technology, elevator control cabinets can achieve real-time, high-speed, and stable data transmission. Each elevator control cabinet can operate independently while maintaining close communication with other control cabinets through communication links, achieving highly efficient collaborative operation.

[0092] Rapid response to security threats: Once an elevator control cabinet detects an anomaly or security threat (such as overload or overspeed), it can quickly broadcast this information to other control cabinets via a communication link. This instant communication ensures that all control cabinets can respond to potential threats in a very short time, improving the safety of the elevator system.

[0093] Intelligent decision-making and synchronous execution: Upon receiving a safety action signal, the control cabinet can intelligently determine whether to generate a safety command based on its own status and preset safety thresholds. Once the command is generated, it can be quickly transmitted to other control cabinets via communication links, ensuring that all elevators can synchronously execute the corresponding safety measures, thus improving the emergency response capability of the elevator system.

[0094] Real-time sharing of operating parameters: Elevator control cabinets can share operating parameters in real time, such as door status and car position. This information sharing enables the entire system to more accurately predict and respond to various situations, thereby optimizing the daily operating efficiency of the elevator.

[0095] Flexible adjustment and expansion: The electrical topology of the elevator control system allows for flexible adjustment and expansion according to actual needs. The system can support more elevator control cabinets and elevator equipment, adapting to elevator systems of different sizes and requirements.

[0096] Improving elevator efficiency: Through a linkage mechanism, the elevator system can intelligently schedule elevators according to passenger demand, thereby improving elevator efficiency. For example, during peak hours, the system can schedule more elevators to operate, reducing passenger waiting time; during off-peak hours, it can reduce the number of elevators in operation, reducing energy consumption.

[0097] Reduced maintenance costs: Because the system can monitor the elevator's operating status in real time, promptly identify and address potential problems, thus reducing elevator failure rates and maintenance costs. Simultaneously, the system provides detailed operating data and fault records, offering strong support for elevator maintenance and upkeep.

[0098] In summary, the advantages of the electrical topology and linkage mechanism of elevator control systems are mainly reflected in efficient collaborative work, rapid response to safety threats, intelligent decision-making and synchronous execution, real-time sharing of operating parameters, flexible adjustment and expansion, improved elevator utilization efficiency, and reduced maintenance costs. These benefits collectively enhance the safety, reliability, and operational efficiency of the elevator system.

[0099] Example 4: This example describes the electrical topology of an elevator control system, based on Examples 1, 2, and 3. When the elevator control system is actually applied in a large commercial building or office building, the following specific scenarios and operating conditions may be encountered.

[0100] Initialization Phase: The building administrator starts the elevator control system. After the system self-checks, all elevator control cabinets (such as upper car control cabinet 1, lower car control cabinet 2, etc.) enter standby mode, ready to receive operating commands. The local safety devices connected to each elevator control cabinet (such as car overload detection, shaft smoke detection, etc.) begin to continuously monitor the safety status of the elevator system.

[0101] Safety action signal acquisition and judgment stage:

[0102] The local safety device is triggered. Assuming it's midday and elevator 1 is operating at full capacity, suddenly, the local safety device in the lower car control cabinet 2 detects that the elevator is overloaded (the number of passengers exceeds the rated load). The lower car control cabinet 2 of elevator 1 immediately enters the safety command generation process, generating a command to "stop the elevator and turn on the emergency lighting".

[0103] The communication loop transmits safety action signals. Simultaneously, during its upward movement, elevator 2 experiences overspeeding due to some reason (such as mechanical failure). The upper car control cabinet 1 corresponding to elevator 2 detects this anomaly and sends a safety action signal to other control cabinets via the communication link. Upon receiving the safety action signal from the upper car control cabinet 1 of elevator 2, the lower car control cabinet 2 of elevator 1 checks its own status (e.g., elevator 1 is in an idle state), confirms that the safety command can be executed, and thus also enters the safety command generation process.

[0104] The generation and transmission of safety commands: The upper car control cabinet 1 and the lower car control cabinet 2 each generate corresponding safety commands based on the type and content of the safety action signals, such as stopping the elevator or closing the car doors. These safety commands are rapidly transmitted to all other elevator control cabinets via a communication link. The elevator control cabinet receiving the safety command determines whether to execute the command based on its own status. For example, elevator 2 may be in the process of descending, but after receiving the command, it determines that its current position is safe and thus executes the stop command.

[0105] Synchronized safety action and confirmation phase: All elevator control cabinets that have received and executed safety instructions send confirmation signals via the communication link to inform the system that the safety action has been completed. After receiving all confirmation signals, the system confirms that all elevators have taken safety measures in accordance with the instructions and ends the safety action process.

[0106] Fault and Handling Recording Phase: Assume that during the execution of safety actions, the control cabinet of elevator 4 fails to execute the stop command due to a power failure. The control cabinet of elevator 4 immediately sends a fault signal through the communication link. Upon receiving the signal, the system triggers the backup power supply and notifies maintenance personnel to handle the situation. The system simultaneously records relevant information about this fault, including the fault time, the elevator number involved, and the content of the safety command, providing a basis for subsequent analysis and tracing.

[0107] Special case handling:

[0108] During peak passenger flow periods, such as the afternoon rush hour, the elevator system receives a large number of operating commands. Based on a pre-set scheduling algorithm, the elevator control cabinet intelligently allocates elevator operating tasks, prioritizing responses to the requests of passengers with the longest waiting times to ensure maximum elevator operating efficiency.

[0109] In an emergency, elevator 5 suddenly stopped operating due to an electrical fault at night, trapping several passengers. The elevator control system immediately activated emergency rescue mode, sending a rescue signal to the fire control room and instructing the control cabinet of elevator 5 to attempt to move the elevator to the nearest floor and open the doors. Simultaneously, the system also reassured the trapped passengers via the building's public address system that a rescue operation was underway.

[0110] These specific scenarios and operational conditions demonstrate the flexibility and reliability of the elevator control system in practical applications, ensuring the safe and efficient operation of the elevator system.

[0111] Any modifications or improvements made to this invention without departing from its spirit are within the scope of protection claimed by this invention.

Claims

1. An electrical topology for an elevator control system, characterized in that, include: At least two elevator control cabinets, each elevator control cabinet is connected to and controls a corresponding car, and there is at least one communication loop between any two elevator control cabinets, the communication loops are used for information exchange; When any elevator control cabinet detects a safety action signal, it transmits the safety action signal to another elevator control cabinet connected to it through a communication loop. When any elevator control cabinet receives a safety action signal from another elevator control cabinet connected to it through the communication loop, it determines whether to generate a safety command based on its own status signal.

2. The electrical topology of an elevator control system according to claim 1, characterized in that, The elevator control cabinet is connected to a safety device, which includes a common safety device connected to each elevator control cabinet and an independent safety device connected to each elevator control cabinet separately. The safety device generates a safety action signal based on its own safety status.

3. The electrical topology of an elevator control system according to claim 2, characterized in that, The aforementioned common safety device includes a pit safety device, which generates a universal safety action signal for any elevator control cabinet based on its own safety status.

4. The electrical topology of an elevator control system according to claim 2 or 3, characterized in that, Each elevator control cabinet is connected to a corresponding car, and the independent safety device generates a unique safety action signal for the elevator control cabinet based on the status signal of the corresponding car.

5. The electrical topology of an elevator control system according to claim 1, 2, or 3, characterized in that, When any elevator control cabinet exchanges information, it can obtain all safety action signals from another elevator control cabinet connected to it. When all safety action signals from another elevator control cabinet overlap with the safety action signals detected by the elevator itself, the system proceeds to determine whether to generate a safety command.

6. The electrical topology of an elevator control system according to claim 5, characterized in that, When determining whether to generate a security instruction upon entry, the system obtains the security status corresponding to its own status signal. When the safety status reaches its own threshold, the elevator control cabinet generates a safety instruction corresponding to the safety status.

7. The electrical topology of an elevator control system according to claim 2 or 3, characterized in that, It also includes the ability of any elevator control cabinet to send a safety instruction to another elevator control cabinet via a communication loop, and the other elevator control cabinet to execute the safety instruction synchronously. Once any elevator control cabinet receives a safety instruction through the communication loop, its own independent safety device executes the safety instruction.

8. The electrical topology of an elevator control system according to claim 1, 2, or 3, characterized in that, The self-state signals include door state signals and position signals. The elevator control cabinet generates door state signals and position signals based on the self-state of the corresponding car. The elevator control cabinet detects the landing door locks based on the door status signal and position signal.

9. The electrical topology of an elevator control system according to claim 8, characterized in that, The door status signals include car door signals and floor door signals; the car door signals include the car door status signals of any elevator control cabinet corresponding to the car, and the floor door signals include the floor door status signals of any elevator control cabinet corresponding to the floor the car has reached.

10. The electrical topology of an elevator control system according to claim 8, characterized in that, It also includes the ability for any elevator control cabinet to transmit door status signals and position signals to another elevator control cabinet connected to it via a communication loop; The self-state includes the car door status signal and the arrival floor door status signal of any elevator control cabinet corresponding to the car.

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