Elevator control method, device, elevator controller, elevator safety system, and elevator

Abstract

The application discloses an elevator control method, device, controller, safety system and elevator. The method comprises the following steps: determining a fault floor and a safety area according to the fault floor; when the position of a car is in the safety area, determining a target stop floor according to the position of the car, a target floor and the safety area, so as to perform a rescue operation according to the target stop floor, wherein the target floor is a user-selected floor. Thus, in the case that the fault floor occurs and the position of the car is in the safety area, the rescue operation is performed in combination with the position of the car, the target floor and the safety area, so that the passenger rescue can be completed in time under the premise of safety, the situation that the passenger is trapped in the elevator car for a long time is avoided, and the riding experience of the passenger is improved.

Description

Technical Field

[0001] This invention relates to the field of elevator technology, and in particular to an elevator control method, an elevator control device, an elevator controller, a computer-readable storage medium, an elevator safety system, and an elevator. Background Technology

[0002] In related technologies, the status of the hall doors on each floor is monitored via an elevator safety link during elevator operation. If a hall door fails to close properly, the elevator is stopped immediately to ensure passenger safety. However, this emergency stop can result in passengers being trapped in the elevator car for an extended period until rescue personnel arrive, thus reducing the passenger experience. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the first objective of this invention is to propose an elevator control method that, when a fault occurs on a floor and the elevator car is within a safe zone, performs a rescue operation by combining the car's position, the target floor, and the safe zone. This allows for timely passenger rescue while ensuring safety, preventing passengers from being trapped in the elevator car for extended periods and improving the passenger experience.

[0004] A second objective of this invention is to provide a computer-readable storage medium.

[0005] The third objective of this invention is to provide an elevator controller.

[0006] The fourth objective of this invention is to provide a computer-readable storage medium.

[0007] The fifth objective of this invention is to provide an elevator safety system.

[0008] The sixth objective of this invention is to provide an elevator.

[0009] To achieve the above objectives, a first aspect of the present invention provides an elevator control method, the method comprising: determining a faulty floor and determining a safe zone based on the faulty floor; when the car is in the safe zone, determining a target stopping floor based on the car position, the target floor, and the safe zone, so as to perform a rescue operation based on the target stopping floor, wherein the target floor is the floor selected by the user.

[0010] According to the elevator control method of this invention, the faulty floor is first determined, and a safe zone is determined based on the faulty floor. When the car is within the safe zone, a target stopping floor is determined based on the car position, the target floor, and the safe zone. A rescue operation is then performed based on the target stopping floor, where the target floor is the floor selected by the user. Therefore, this method, when a faulty floor occurs and the car is within the safe zone, combines the car position, the target floor, and the safe zone to perform a rescue operation, enabling timely passenger rescue while ensuring safety. This avoids passengers being trapped in the elevator car for extended periods, improving the passenger experience.

[0011] In addition, the elevator control method according to the above embodiments of the present invention may also have the following additional technical features:

[0012] According to one embodiment of the present invention, each floor is equipped with a hall door lock, and determining the faulty floor includes: obtaining the location of the faulty hall door lock; and determining the faulty floor based on the location of the hall door lock.

[0013] According to one embodiment of the present invention, determining the target stopping floor based on the car position, the target floor, and the safety zone includes: when the target floor is within the safety zone, determining the target stopping floor based on the positional relationship between the car position and the target floor; and when the target floor is outside the safety zone, determining the target stopping floor based on the car position and the safety zone.

[0014] According to one embodiment of the present invention, determining the target stopping floor based on the positional relationship between the car position and the target floor includes: when the car position and the target floor are on the same side of the faulty floor, taking the target floor as the target stopping floor; when the car position and the target floor are on opposite sides of the faulty floor, determining the target stopping floor based on the car position and the safety zone.

[0015] According to one embodiment of the present invention, the elevator control method further includes: controlling the elevator to stop suddenly when the car is outside the safe zone, and determining the target stopping floor according to the car position and the safe zone, so as to perform rescue operations after the elevator stops suddenly according to the target stopping floor.

[0016] According to one embodiment of the present invention, determining the target stopping floor based on the car position and the safety zone includes: determining the limit position of the safety zone based on the car position and the safety zone, and taking the floor closest to the limit position of the safety zone and within the safety zone as the target stopping floor, wherein the distance between the car position and the target stopping floor does not include the faulty floor.

[0017] According to one embodiment of the present invention, determining a safe zone based on a faulty floor includes: acquiring the elevator's operating speed and braking capacity; determining a target safe distance based on the operating speed and braking capacity; and determining a safe zone based on the target safe distance and the faulty floor.

[0018] According to one embodiment of the present invention, determining a target safe distance based on operating speed and braking capacity includes: determining a distance adjustment parameter based on operating speed and braking capacity; and adjusting a preset safe distance based on the distance adjustment parameter to obtain the target safe distance.

[0019] According to one embodiment of the present invention, determining a safe zone based on a faulty floor includes: determining a safe zone based on the faulty floor and a preset safe distance.

[0020] According to one embodiment of the present invention, the elevator control method further includes: adjusting the preset service floor interval of the elevator according to the safety zone.

[0021] To achieve the above objectives, a second aspect of the present invention provides an elevator control device, which includes: a first determining module for determining the faulty floor and determining a safe zone based on the faulty floor; and a second determining module for determining a target stopping floor based on the car position, the target floor, and the safe zone when the car is in the safe zone, so as to perform a rescue operation based on the target stopping floor, wherein the target floor is the floor selected by the user.

[0022] According to an embodiment of the elevator control device of the present invention, a first determining module determines the faulty floor and a safe zone based on the faulty floor. When the car is within the safe zone, a second determining module determines the target stopping floor based on the car position, the target floor, and the safe zone, and then performs a rescue operation based on the target stopping floor, where the target floor is the floor selected by the user. Therefore, when a faulty floor occurs and the car is within the safe zone, this device, by combining the car position, the target floor, and the safe zone to perform a rescue operation, can promptly complete passenger rescue while ensuring safety, preventing passengers from being trapped in the elevator car for extended periods and improving the passenger experience.

[0023] To achieve the above objectives, a third aspect of the present invention provides an elevator controller, including a memory, a processor, and an elevator control program stored in the memory and executable on the processor. When the processor executes the elevator control program, it implements an elevator control method.

[0024] According to the elevator controller of the present invention, when the processor executes the elevator control program, it implements the elevator control method. Based on the above elevator control method, passenger rescue can be completed in a timely manner while ensuring safety, avoiding the situation where passengers are trapped in the elevator car for a long time, and improving the passenger riding experience.

[0025] To achieve the above objectives, a fourth aspect of the present invention provides a computer-readable storage medium storing an elevator control program thereon, which, when executed by a processor, implements the elevator control method described above.

[0026] According to the computer-readable storage medium of the present invention, when the processor executes the elevator control program, it implements the elevator control method described above. Based on the elevator control method described above, passenger rescue can be completed in a timely manner while ensuring safety, avoiding the situation where passengers are trapped in the elevator car for a long time, and improving the passenger riding experience.

[0027] To achieve the above objectives, a fifth aspect of the present invention provides an elevator safety system, comprising: a safety circuit including a plurality of electrical safety switches; a safety device for detecting the working state of the electrical safety switches and generating corresponding state detection signals; a car position detection device for detecting the car position of the elevator; and an elevator controller connected to the safety device and the car position detection device, for determining the faulty floor based on the state detection signals, determining a safe zone based on the faulty floor, and determining a target stopping floor based on the car position, the target floor, and the safe zone when the car position is within the safe zone, so as to perform a rescue operation based on the target stopping floor, wherein the target floor is the floor selected by the user.

[0028] According to an embodiment of the elevator safety system of the present invention, the safety circuit includes several electrical safety switches. A safety device detects the operating status of the electrical safety switches and generates corresponding status detection signals. A car position detection device detects the car position of the elevator. The elevator controller determines the faulty floor based on the status detection signals, determines a safe zone based on the faulty floor, and, when the car is within the safe zone, determines a target stopping floor based on the car position, target floor, and safe zone. Rescue operations are then performed based on the target stopping floor, where the target floor is the floor selected by the user. Therefore, when a faulty floor occurs and the car is within the safe zone, this elevator safety system, by combining the car position, target floor, and safe zone to perform rescue operations, can promptly complete passenger rescue while ensuring safety, preventing passengers from being trapped in the elevator car for extended periods and improving the passenger experience.

[0029] To achieve the above objectives, a fifth aspect of the present invention provides an elevator including the elevator safety system described above.

[0030] According to the elevator of the present invention, based on the elevator safety system described above, passenger rescue can be completed in a timely manner while ensuring safety, avoiding the situation where passengers are trapped in the elevator car for a long time, and improving the passenger riding experience.

[0031] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0032] Figure 1 A flowchart of an elevator control method according to an embodiment of the present invention;

[0033] Figure 2 A circuit diagram of an elevator safety system according to a specific embodiment of the present invention. Figure 1 ;

[0034] Figure 3 A flowchart of an elevator control method according to a specific embodiment of the present invention;

[0035] Figure 4 This is a block diagram of an elevator control device according to an embodiment of the present invention;

[0036] Figure 5 This is a block diagram of an elevator controller according to an embodiment of the present invention;

[0037] Figure 6 This is a block diagram of an elevator safety system according to an embodiment of the present invention;

[0038] Figure 7 A circuit diagram of an elevator safety system according to a specific embodiment of the present invention. Figure 2 ;

[0039] Figure 8 A circuit diagram of an elevator safety system according to a specific embodiment of the present invention. Figure 3 ;

[0040] Figure 9 This is a state detection circuit diagram according to a specific embodiment of the present invention;

[0041] Figure 10 This is a block diagram of an elevator according to an embodiment of the present invention. Detailed Implementation

[0042] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0043] The elevator control method, elevator control device, elevator controller, computer-readable storage medium, elevator safety system, and elevator proposed in the embodiments of the present invention are described below with reference to the accompanying drawings.

[0044] Figure 1 This is a flowchart of an elevator control method according to an embodiment of the present invention.

[0045] like Figure 1 As shown, the elevator control method of this embodiment of the invention may include:

[0046] S1, determine the faulty floor and the safe zone based on the faulty floor;

[0047] S2, when the car is within the safe zone, determines the target stopping floor based on the car position, the target floor, and the safe zone, and performs rescue operations based on the target stopping floor, where the target floor is the floor selected by the user.

[0048] Specifically, the "faulty floor" designation is used to define floors where the elevator cannot operate normally, such as floors where hall doors cannot be opened or closed properly. For example, detection units can be deployed on each floor, and feedback signals from these units can be used to determine whether a fault has occurred on that floor, thus identifying the faulty floor. Detection units can utilize sensors, cameras, contact switches, etc., and there are no restrictions here.

[0049] Based on the division of the faulty floor into safe and unsafe zones, when the elevator car is in a safe zone, the elevator is considered to have a high safety factor, and the elevator can continue to operate, stopping at the corresponding floor and controlling the opening of the car doors and the landing doors on the corresponding floor to allow users to evacuate the car as quickly as possible. When the elevator car is in an unsafe zone, it is considered that continuing to operate the elevator would pose a significant safety hazard, and the elevator will be stopped immediately.

[0050] Taking an elevator serving floors 1-10, with the fault occurring on floor 5, as an example, since the floors above and below floor 5 are considered unsafe, floors 4-6 are considered unsafe zones, while floors 1-3 and 5-10 are considered safe zones. Assuming the elevator car is located on floor 2, within a safe zone, the elevator will be controlled to stop at the nearest floor according to its actual direction of travel. For example, if the elevator is traveling upwards, the car can be controlled to stop at floor 3, and then the car doors and the landing door on floor 3 can be opened to allow the user to evacuate promptly.

[0051] To improve the user experience, when there is a faulty floor and the elevator car is within a safe area, the target stopping floor is determined based on the car's location, the target floor, and the safe area. This target stopping floor is the floor where rescue operations will be carried out. While ensuring that passengers can leave the elevator car as quickly as possible, the target stopping floor is located within a safe area to improve rescue safety. In addition, when combined with the target floor, the target stopping floor can be made as close as possible to the target floor to reduce the distance the user needs to climb stairs to reach the target floor after leaving the elevator car.

[0052] In one embodiment of the present invention, each floor is equipped with a hall door lock, and determining the faulty floor includes: obtaining the location of the faulty hall door lock; and determining the faulty floor based on the location of the hall door lock.

[0053] In other words, the faulty floor is determined based on the status of the corresponding hall door locks on each floor.

[0054] Specifically, such as Figure 2 As shown, each floor is equipped with a corresponding hall door lock (K_1, K_2...K_n-1, K_n) to monitor the status of the hall doors on each floor. When the hall door on a given floor is closed, the hall door lock is in the closed state; when the hall door is open, the hall door lock is in the open state. The status of the hall door lock is monitored through a hall door device 61. The number of hall door safety devices 61 can be configured according to the number of floors. Figure 2 A hall door security device 61 is installed on every six floors to monitor the status of the hall door locks on all six floors.

[0055] Taking the hall door safety device 61 closest to the pit as an example, one end of the hall door locks K_1 on the first floor, K_2 on the second floor, K_3 on the third floor, K_4 on the fourth floor, K_5 on the fifth floor, and K_6 on the sixth floor are all connected to the PWR pin of the hall door safety device 61. The PWR pin is used for power supply, and the other end is connected to the In6, In5, In4, In3, In2, and In1 pins of the hall door safety device 61, respectively. The hall door safety device 61 can determine the hall door lock status of each floor according to the received level of each pin. For example, when the In1 pin is high, it is determined that the hall door lock K_6 on the sixth floor is in a closed state. If the elevator control determines that the hall door on the sixth floor is open at that time, then the hall door lock K_6 is considered to be faulty; if the elevator control determines that the hall door on the sixth floor is not open, then the hall door lock K_6 is considered not to be faulty. Conversely, when the In1 pin is high, it is determined that the hall door lock K_6 on the sixth floor is in an open state. If the elevator control determines that the hall door on the sixth floor is open at that time, then the hall door lock K_6 is considered not to be faulty; if the elevator control determines that the hall door on the sixth floor is not open, then the hall door lock K_6 is considered to be faulty. Therefore, if the hall door lock K_6 is determined to be faulty, the sixth floor is determined to be the faulty floor based on the installation location of the hall door lock K_6.

[0056] In one embodiment of the present invention, determining a safe area based on the faulty floor includes: acquiring the elevator's operating speed and braking capacity; determining a target safe distance based on the operating speed and braking capacity; and determining a safe area based on the target safe distance and the faulty floor.

[0057] When the elevator car is within the safe zone, if the elevator is braked according to the preset braking force, the distance between the elevator car's stopping position and the faulty floor meets safety requirements, resulting in high operational safety. However, when the elevator car is within the unsafe zone, if the elevator is braked according to the preset braking force, the elevator car may stop close to the faulty floor, or the elevator car may pass over the faulty floor during braking, leading to lower safety. Therefore, to improve elevator operational safety, this embodiment dynamically adjusts the safe zone based on the elevator's braking capacity and operating speed.

[0058] Specifically, to ensure the safe operation of the elevator, the elevator safety system periodically monitors the elevator's braking capability through a braking detection unit. This braking capability can be determined using parameters such as braking distance and braking force. During elevator control, the braking capability can be directly accessed from within the elevator safety system, and the elevator's operating speed is determined based on speed sensors. It can be understood that at the same operating speed, a stronger braking capability requires a shorter braking distance, while a weaker braking capability requires a longer braking distance. Conversely, with the same braking capability, a faster operating speed requires a longer braking distance, and a slower operating speed requires a shorter braking distance.

[0059] After determining the elevator's braking capacity and operating speed, the actual braking distance is determined based on these parameters. The target safe distance is then determined based on the actual braking distance, and the safe zone is further defined by considering the location of the faulty floor. For example, assuming the actual braking distance is 1m, the target safe distance can be determined as 1.5m. If the height of the faulty floor is 10m, then the safe zone is between 8.5m and 11.5m.

[0060] In one embodiment of the present invention, determining the target safe distance based on the operating speed and braking capacity includes: determining a distance adjustment parameter based on the operating speed and braking capacity; and adjusting a preset safe distance based on the distance adjustment parameter to obtain the target safe distance.

[0061] Specifically, in addition to determining the actual braking distance based on operating speed and braking capacity, and then determining the target safe distance based on the actual braking distance, a preset safe distance can also be saved in advance. Distance adjustment parameters can be determined based on the real-time determined operating speed and braking capacity. These distance adjustment parameters can be proportional coefficients or distance values. For example, a table relating operating speed, braking capacity, and distance adjustment parameters can be pre-established based on experiments. During the control process, the distance adjustment parameters can be obtained by looking up the table based on the determined operating speed and braking capacity. The preset safe distance can then be adjusted using these distance adjustment parameters, and the adjusted preset safe distance can be used as the target safe distance.

[0062] This method automatically corrects the elevator's target safe distance based on the elevator's operating speed and braking capability, improving controllability and reliability, and ensuring passenger safety.

[0063] In one embodiment of the present invention, determining a safe zone based on the faulty floor includes: determining the safe zone based on the faulty floor and a preset safe distance. That is, the safe zone is determined using a fixed preset safe distance during elevator control.

[0064] In one embodiment of the present invention, determining the target stopping floor based on the car position, the target floor, and the safety zone includes: when the target floor is within the safety zone, determining the target stopping floor based on the positional relationship between the car position and the target floor; and when the target floor is outside the safety zone, determining the target stopping floor based on the car position and the safety zone.

[0065] Specifically, taking floors 1-20 of the elevator service area and floor 10 of the fault as the example, the safe zones are floors 1-8 and 12-20. If the elevator car is within the safe zone and the user's selected target floor is also within the safe zone, the target stopping floor is determined based on the car's position and the target floor for elevator rescue control. If the elevator car is within the safe zone but the user's selected target floor is outside the safe zone (i.e., a non-safe zone), the target stopping floor is determined based on the car's position and the safe zone to ensure the safety of the rescue operation.

[0066] In one embodiment of the present invention, determining the target stopping floor based on the positional relationship between the car position and the target floor includes: when the car position and the target floor are on the same side of the faulty floor, the target floor is taken as the target stopping floor; when the car position and the target floor are on opposite sides of the faulty floor, the target stopping floor is determined according to the car position and the safety zone.

[0067] Specifically, taking the elevator service floors as 1-20 and the faulty floor as 10 as an example, the safe zones are floors 1-8 and 12-20.

[0068] If the current elevator car is on the 2nd floor and the target floor is the 6th floor, then the 6th floor will be used as the target floor. The elevator will be controlled to move to the 6th floor and stop there. Then, the elevator car doors and the 6th-floor landing door will open, allowing the user to exit the elevator car promptly. This implementation method satisfies the user's travel needs while simultaneously completing the rescue operation.

[0069] If the current elevator car is on the 2nd floor and the target floor is the 15th floor, then traveling to the target floor would pass by the faulty floor, posing a safety risk. Therefore, the target floor should be determined based on the car's position and the safe zone, for example, the target floor could be determined to be the 3rd floor. While maintaining the elevator's current direction of travel, the goal is to ensure the target floor is within the safe zone, thus guaranteeing passenger safety.

[0070] In one embodiment of the present invention, the elevator control method further includes: controlling the elevator to stop suddenly when the car is outside the safe zone, and determining the target floor based on the car position and the safe zone, so as to perform rescue operations after the elevator stops suddenly based on the target floor.

[0071] Specifically, taking the elevator service floors as 1-20 and the faulty floor as 10 as an example, the safe zones are floors 1-8 and 12-20.

[0072] If the elevator car is currently on the 9th floor, continuing to operate the elevator or applying the preset braking force could result in the elevator car stopping on the malfunctioning 10th floor, or even passing through the malfunctioning floor, posing a significant safety risk. Therefore, once it is confirmed that the current car position is outside the safe zone, the elevator should be brought to an emergency stop, and rescue operations should only be carried out after the elevator has come to a complete stop.

[0073] In one embodiment of the present invention, determining the target stopping floor based on the car position and the safety zone includes: determining the limit position of the safety zone based on the car position and the safety zone, and taking the floor closest to the limit position of the safety zone and within the safety zone as the target stopping floor, wherein the distance between the car position and the target stopping floor does not include the faulty floor.

[0074] Specifically, taking the elevator service floors as 1-20 and the faulty floor as 10 as an example, the safe zones are floors 1-8 and 12-20.

[0075] If the current car is on the 2nd floor and the target floor is the 15th floor, then the 8th floor will be the target stopping floor. If the current car is on the 9th floor, then after controlling the elevator to emergency stop, the 8th floor will be the target stopping floor. If the current car is on the 10th floor, then the car is equidistant from both safety zones. In this case, the target stopping floor can be determined based on the elevator's direction of travel before the emergency stop. For example, assuming the elevator was traveling upwards before the emergency stop, then the 12th floor will be selected as the target stopping floor.

[0076] In one embodiment of the present invention, the elevator control method further includes: adjusting the preset service floor interval of the elevator according to the safety zone.

[0077] In other words, assuming the elevator's preset service floor range is 1-20 floors, and the 10th floor is determined to be the faulty floor, and the safe zones are floors 1-8 and 12-20 floors, the elevator's preset service floor range can be adjusted to floors 1-8, allowing the elevator to operate normally within the safe zone.

[0078] As a specific embodiment of this application, such as Figure 3 As shown, the elevator control method may include the following steps:

[0079] S301, obtain the status information of the hall door lock.

[0080] S302, determine if there is a malfunction in the hall door lock. If yes, proceed to step S303; otherwise, proceed to step S301.

[0081] S303, retrieve the location of the hall door lock that malfunctioned.

[0082] S304, determine the faulty floor based on the location of the hall door lock.

[0083] S305 obtains the elevator's operating speed and braking capability.

[0084] S306, determine the distance adjustment parameter k by referring to the table based on the operating speed and braking capacity.

[0085] S307, calculate the target safety distance S = k * S0. Where S0 is the preset safety distance.

[0086] S308, determine the safe zone based on the target safe distance S and the faulty floor.

[0087] S309, Determine whether the car is within the safe zone. If yes, proceed to step S310; otherwise, proceed to step S316.

[0088] S310, Determine whether the target floor is within a safe area. If yes, proceed to step S311; otherwise, proceed to step S312.

[0089] S311, Determine whether the car position and the target floor are on the same side of the faulty floor. If yes, proceed to step S312; if no, proceed to step S314.

[0090] S312, set the target floor as the target docking floor.

[0091] S313, perform rescue operations according to the target floor.

[0092] S314, determine the limit position of the safety zone based on the car position and the safety zone.

[0093] S315, select the floor closest to the safety zone limit position and within the safety zone as the target stopping floor, excluding the faulty floor between the car position and the target stopping floor. Execute step S313.

[0094] S316, Control the elevator to stop urgently. Execute step S314.

[0095] Besides using the hall door lock to determine the faulty floor, when an electrical safety switch in the pit or machine room malfunctions, the pit or machine room can also be used as the faulty floor to determine a safe area for rescue operations. For example, if the car is on the 10th floor and the car buffer switch in the pit malfunctions, the nearest leveling rescue can be performed based on the elevator's direction of travel and the car's position to prevent people from being trapped in an emergency stop. Simultaneously, the elevator speed can be reduced as needed to stop at the target floor at a relatively low speed, ensuring the safety of elevator operation.

[0096] In summary, the elevator control method according to embodiments of the present invention first determines the faulty floor, then determines a safe zone based on the faulty floor, and when the car is within the safe zone, determines the target stopping floor based on the car position, the target floor, and the safe zone, and then performs a rescue operation based on the target stopping floor, where the target floor is the floor selected by the user. Therefore, this method, when a faulty floor occurs and the car is within the safe zone, combines the car position, the target floor, and the safe zone to perform a rescue operation, enabling timely passenger rescue while ensuring safety, preventing passengers from being trapped in the elevator car for extended periods, and improving the passenger experience.

[0097] Corresponding to the above embodiments, the present invention also proposes an elevator control device.

[0098] like Figure 4 As shown, the elevator control device of this embodiment may include: a first determining module 10 and a second determining module 20.

[0099] The first determining module 10 is used to determine the faulty floor and the safe zone based on the faulty floor. The second determining module 20 is used to determine the target stopping floor based on the car position, the target floor, and the safe zone when the car is within the safe zone, so as to perform rescue operations based on the target stopping floor, wherein the target floor is the floor selected by the user.

[0100] According to one embodiment of the present invention, each floor is equipped with a hall door lock, and the first determining module 10 determines the faulty floor, specifically used for: obtaining the location of the faulty hall door lock; and determining the faulty floor based on the location of the hall door lock.

[0101] According to one embodiment of the present invention, the second determining module 20 determines the target stopping floor based on the car position, the target floor, and the safety zone, specifically for: determining the target stopping floor based on the positional relationship between the car position and the target floor when the target floor is within the safety zone; and determining the target stopping floor based on the car position and the safety zone when the target floor is outside the safety zone.

[0102] According to one embodiment of the present invention, the second determining module 20 determines the target stopping floor based on the positional relationship between the car position and the target floor, specifically used for: when the car position and the target floor are on the same side of the faulty floor, taking the target floor as the target stopping floor; when the car position and the target floor are on opposite sides of the faulty floor, determining the target stopping floor based on the car position and the safety zone.

[0103] According to one embodiment of the present invention, the second determining module 20 is further configured to: control the elevator to stop suddenly when the car position is outside the safe zone, and determine the target stopping floor according to the car position and the safe zone, so as to perform rescue operations after the elevator stops suddenly according to the target stopping floor.

[0104] According to one embodiment of the present invention, the second determining module 20 determines the target stopping floor based on the car position and the safety zone, specifically for: determining the limit position of the safety zone based on the car position and the safety zone, and taking the floor closest to the limit position of the safety zone and within the safety zone as the target stopping floor, and excluding the faulty floor between the car position and the target stopping floor.

[0105] According to one embodiment of the present invention, the first determining module 10 determines a safe area based on the faulty floor, specifically for: acquiring the elevator's operating speed and braking capacity; determining a target safe distance based on the operating speed and braking capacity; and determining a safe area based on the target safe distance and the faulty floor.

[0106] According to one embodiment of the present invention, the first determining module 10 determines the target safe distance based on the operating speed and braking capacity, specifically used for: determining the distance adjustment parameter based on the operating speed and braking capacity; adjusting the preset safe distance based on the distance adjustment parameter to obtain the target safe distance.

[0107] According to one embodiment of the present invention, the first determining module 10 determines a safe area based on the faulty floor, specifically for: determining a safe area based on the faulty floor and a preset safe distance.

[0108] According to one embodiment of the present invention, the first determining module 10 is further configured to: adjust the preset service floor range of the elevator according to the safety zone.

[0109] It should be noted that for details not disclosed in the elevator control device of the present invention, please refer to the details disclosed in the elevator control method of the above embodiments of the present invention, which will not be repeated here.

[0110] According to an embodiment of the elevator control device of the present invention, a first determining module determines the faulty floor and a safe zone based on the faulty floor. When the car is within the safe zone, a second determining module determines the target stopping floor based on the car position, the target floor, and the safe zone, and then performs a rescue operation based on the target stopping floor, where the target floor is the floor selected by the user. Therefore, when a faulty floor occurs and the car is within the safe zone, this device, by combining the car position, the target floor, and the safe zone to perform a rescue operation, can promptly complete passenger rescue while ensuring safety, preventing passengers from being trapped in the elevator car for extended periods and improving the passenger experience.

[0111] Corresponding to the above embodiments, the present invention also proposes an elevator controller.

[0112] like Figure 5 As shown, the elevator controller 100 of this embodiment includes a memory 110, a processor 120, and an elevator control program stored in the memory 110 and executable on the processor 120. When the processor 120 executes the elevator control program, it implements an elevator control method.

[0113] According to the elevator controller of the present invention, when the processor executes the elevator control program, it implements the elevator control method. Based on the above elevator control method, passenger rescue can be completed in a timely manner while ensuring safety, avoiding the situation where passengers are trapped in the elevator car for a long time, and improving the passenger riding experience.

[0114] Corresponding to the above embodiments, the present invention also proposes a computer-readable storage medium.

[0115] The computer-readable storage medium of this invention stores an elevator control program thereon, which, when executed by a processor, implements the elevator control method described above.

[0116] According to the computer-readable storage medium of the present invention, when the processor executes the elevator control program, it implements the elevator control method described above. Based on the elevator control method described above, passenger rescue can be completed in a timely manner while ensuring safety, avoiding the situation where passengers are trapped in the elevator car for a long time, and improving the passenger riding experience.

[0117] Corresponding to the above embodiments, the present invention also proposes an elevator safety system.

[0118] like Figure 6 As shown, the elevator safety system of this embodiment includes: a safety circuit 50, a safety device 60, a car position detection device 70, and the elevator controller 80 described above.

[0119] The safety circuit 50 includes several electrical safety switches 51. A safety device 60 detects the operating status of the electrical safety switches 51 and generates corresponding status detection signals. A car position detection device 70 detects the elevator car position. An elevator controller 80 is connected to the safety device 60 and the car position detection device 70. The elevator controller 80 determines the faulty floor based on the status detection signals, determines the safe zone based on the faulty floor, and, when the car is within the safe zone, determines the target stopping floor based on the car position, the target floor, and the safe zone, to perform rescue operations based on the target stopping floor, where the target floor is the floor selected by the user.

[0120] Specifically, the following is combined with Figure 2 , Figures 6 to 9The elevator safety system of this embodiment is illustrated by example.

[0121] Multiple electrical safety switches 51 are installed in the elevator safety system. The elevator safety system realizes safety monitoring and control of the elevator based on the status detection of the electrical safety switches.

[0122] In related technologies, a safety circuit is constructed by connecting all electrical safety switches in series in the elevator to control the power supply to the elevator's drive unit and brakes. Because the electrical safety switches are located in the machine room, hoistway, landing doors, car top, and pit, the entire elevator safety circuit is very long. For example, with an elevator lifting height of 100 meters, the safety circuit length can reach 1000 meters or even longer. The power supply voltage for the safety circuit is typically 220Vac AC or 110Vac generated by a transformer. A long safety circuit can lead to problems such as circuit interference, voltage drop, circuit diameter issues, and excessive circuit resistance due to aging door lock contacts. Furthermore, with long-term use, elevator aging can cause the safety circuit to become unstable, further reducing the elevator's safety performance.

[0123] In the elevator safety system of this application embodiment, the safety device 60 includes a hall door safety device 61, a pit safety device 62, a car top safety device 63, and a machine room safety device 64. The number of hall door safety devices 61 can be configured according to the number of floors the elevator operates on. For example, when the elevator serves 20 floors, four hall door safety devices 61 can be set up, each responsible for detecting the hall door locks on five floors. Electrical safety switches 51 are connected to the hall door safety device 61, pit safety device 62, car top safety device 63, and machine room safety device 64 based on their installation locations. Each electrical safety switch 51 is connected to the corresponding safety device 60 via I / O for monitoring its switch status. Combined with a programmable electronic system, the hall door safety device 61, pit safety device 62, and car top safety device 63 send the monitored status of the electrical safety switches 51 to the machine room safety device 64 via a bus (e.g., a CAN / 485 safety bus). Thus, the status of all electrical safety switches 51 in the entire elevator is aggregated in the machine room safety device 64. The machine room safety device 64, in conjunction with the operating commands of the elevator controller 80, activates safety relays K1 and K2 via the Control pin to control the power supply of the elevator's drive unit and the power supply of the brake. Therefore, this embodiment simplifies the complexity of the physical connection of the safety circuit 50, shortens the path of the safety circuit 50, and simultaneously reduces the problem of excessively long line impedance, as well as the impedance fluctuation problem caused by power grid voltage fluctuations on the circuit impedance.

[0124] It is understandable that each safety device 60 is equipped with a status detection circuit and a control module for detecting the switching state of the electrical safety switch 51. To improve the accuracy of status detection, multiple detection units can be arranged in each status detection circuit. These multiple detection units detect the state of an electrical safety switch 51 and output detection feedback signals respectively. The control module within the corresponding safety device 60 determines the current state of the electrical safety switch 51 based on these multiple detection feedback signals, thereby improving detection accuracy. For example, if multiple detection feedback signals for the same electrical safety switch 51 are identical, the current state of the electrical safety switch 51 can be determined based on the detection feedback signals; if multiple detection feedback signals for the same electrical safety switch 51 are different, the electrical safety switch 51 can be directly considered faulty, or a fault detection signal can be fed back.

[0125] For example, the status detection circuit for the hall door lock K_1 is as follows: Figure 9 As shown, the PWR pin of the hall door safety device 61 is used to provide power supply VCC. One end of the hall door lock K_1 is connected to power supply VCC through the PWR pin, and the other end is connected to the In6 pin to access the status detection circuit. The status detection circuit includes two detection units, each with the same circuit. Each detection unit circuit consists of resistor R1, resistor R2, Zener diode D1, comparator A1, and isolation optocoupler U1. The output of the isolation optocoupler U1 is used to output the detection feedback signal.

[0126] This embodiment uses a voltage comparison circuit to monitor the status of the hall door lock K_1. When the hall door lock K_1 is in the closed position, the voltage of VCC is divided by the hall door lock K_1 and the resistor R1, and the first divided voltage is output to the positive input terminal of the comparator A1. Based on the voltage of the resistor R2 and the Zener diode D1, the output voltage Vref is output to the negative input terminal of the comparator A2. When the voltage at the positive input terminal of the comparator A1 is greater than the voltage at the negative input terminal of the comparator A2, the comparator A1 outputs a high level to drive the isolation optocoupler U1 to operate. The isolation optocoupler U1 outputs a high-level detection feedback signal.

[0127] It should be noted that, Figure 9 The parameters of each electrical component can be selected according to actual conditions to ensure that comparator A1 outputs a high level when the hall door lock K_1 is closed, driving the isolation optocoupler U1 to output a high-level detection feedback signal. At this time, comparator A1 will only output a low level when the hall door lock K_1 is open, resulting in a low-level detection feedback signal, thus determining that the hall door lock K_1 is in the open state. This circuit significantly reduces the requirements of the elevator safety system on the hall door lock contacts, improves the elevator electrical control system's adaptability to the environment, and avoids the situation in related technologies where excessive contact resistance of the hall door lock causes status detection errors.

[0128] The control module of the hall door safety device 61 determines the current state of the hall door lock K_1 based on the two received detection feedback signals. For example, if both detection feedback signals from the two detection units are high, the hall door lock K_1 is considered to be in a closed state; if both detection feedback signals from the two detection units are low, the hall door lock K_1 is considered to be in an open state; if one detection feedback signal from the two detection units is high and the other is low, since the current state of the hall door lock K_1 cannot be determined, it is directly considered that the hall door lock K_1 is faulty, or a fault detection signal may be fed back.

[0129] Understandable Figure 9 It can also be used for status monitoring of other electrical safety switches 51. For example, the shock absorber electrical safety switch, limit switch, auxiliary emergency stop switch, pit door switch, pit ladder switch, speed governor tensioning device switch, absolute position magnetic strip tensioning device switch, pit platform switch, etc., corresponding to the pit safety device 62; the safety clamp electrical safety switch, limit switch, car top emergency stop switch, auxiliary emergency stop switch, safety window switch, car locking switch, etc., corresponding to the car top safety device 63; the speed governor electrical safety switch, limit switch, control cabinet emergency stop switch, auxiliary emergency stop switch, handwheel switch, rope clamp switch, traction machine protective cover switch, etc., corresponding to the machine room safety device 64.

[0130] It should be further noted that the electrical safety switches 51 of the pit safety device 62, car top safety device 63, and machine room safety device 64 can be arranged in the same manner as the hall door lock, i.e., as follows: Figure 7 and Figure 8 The one-to-one monitoring shown refers to the status detection of each electrical safety switch 51 via the In pin; alternatively, electrical safety switches can be grouped according to whether they are bypassed by an emergency electric switch, such as... Figure 2 As shown, electrical safety switches that can be bypassed by emergency electric circuits are connected in series, and electrical safety switches that cannot be bypassed by emergency electric circuits are connected in series. The PWR pin and In pin of the corresponding safety device are connected to the two ends of the series branch respectively to detect the status of the electrical safety switches.

[0131] When the elevator starts operating normally, each safety module 60 monitors the status of the corresponding electrical safety switch 51 and transmits the status of each electrical safety switch 51 to the machine room safety device 64 via the safety bus. The machine room safety device 64 receives the operating status of all electrical safety switches 51 and, upon confirming that all electrical safety switches 51 are in the closed state, determines that the safety circuit 50 is in normal condition. It then transmits the status of the safety circuit 50 to the elevator controller 80 via communication. The elevator controller 80 initiates a start command to the machine room safety module 64, which closes the output safety relays K1 and K2. Safety relays K1 and K2 act as main contactors to control the traction machine power supply and the brake power supply. During normal elevator operation, if an electrical safety switch 51 opens, the open state of the electrical safety switch 51 is immediately transmitted to the machine room safety device 64 via the safety bus. The machine room safety device 64 immediately disconnects the power supply to the output safety relays, achieving safe disconnection of the traction machine power supply and brake power supply, meeting the safety design requirements of elevator standards.

[0132] In addition, this elevator safety system can also bypass the corresponding hall door locks and elevator car door locks through the landing door bypass device and car door bypass device connected to the safety device 64 in the operating room. Specifically, since the hall door locks are independently monitored, maintenance personnel can selectively bypass the problematic hall door locks when operating the hall door lock bypass device. At this time, other intact hall door locks are still under monitoring. If a sudden disconnection occurs during operation, the elevator can be safely stopped. Correspondingly, since the car door locks are independently monitored, maintenance personnel can also selectively bypass the problematic car door locks when operating the car door lock bypass device.

[0133] An embodiment that independently monitors each electrical safety switch 51 located in the machine room, pit, and car top (e.g.) Figure 7 , Figure 8 In the system, during emergency electric operation, the electrical safety switch 51 can be selectively bypassed. For example, during testing, the electrical safety switch 51 under test can be selectively bypassed, allowing other electrical safety switches 51 to remain in monitoring mode, thus improving operational safety. Furthermore, the car position detection device 70 uses an absolute safety hoistway position sensor to monitor the car position in real time, improving monitoring accuracy.

[0134] exist Figure 8 In the illustrated embodiment, the elevator safety system operates within the elevator group control system. Based on the destination floor selection system 90, the elevator safety system can exclude malfunctioning hall door locks from the service floors of the corresponding staircases, allowing the elevators to continue serving customers. For example, in a system including elevators A and B, assuming the hall door lock of elevator A on the 29th floor is malfunctioning, then the 29th floor will be excluded from the service floors of elevator A.

[0135] According to an embodiment of the elevator safety system of the present invention, the safety circuit includes several electrical safety switches. A safety device detects the operating status of the electrical safety switches and generates corresponding status detection signals. A car position detection device detects the car position of the elevator. The elevator controller can determine the faulty floor based on the status detection signals, determine a safe zone based on the faulty floor, and, when the car position is within the safe zone, determine the target stopping floor based on the car position, the target floor, and the safe zone. Rescue operations are then performed based on the target stopping floor, where the target floor is the floor selected by the user. Therefore, when a faulty floor occurs and the car position is within the safe zone, this elevator safety system, by combining the car position, the target floor, and the safe zone to perform rescue operations, can promptly complete passenger rescue while ensuring safety, preventing passengers from being trapped in the elevator car for extended periods and improving the passenger experience. Furthermore, the elevator safety system can also simultaneously report the fault to the maintenance center, shortening the maintenance response time.

[0136] Corresponding to the above embodiments, the present invention also proposes an elevator.

[0137] like Figure 10 As shown, the elevator 200 of this embodiment includes the elevator safety system 210 described above.

[0138] According to the elevator of the present invention, based on the elevator safety system described above, passenger rescue can be completed in a timely manner while ensuring safety, avoiding the situation where passengers are trapped in the elevator car for a long time, and improving the passenger riding experience.

[0139] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Furthermore, computer-readable media can even be paper or other suitable media on which programs can be printed, because programs can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpreting, or otherwise processing as necessary, and then stored in computer memory.

[0140] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0141] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0142] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0143] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0144] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An elevator control method, characterized in that, The method includes: Identify the faulty floor and determine the safe zone based on the faulty floor; When the car is within the safety zone, when the target floor is within the safety zone, and when the car and the target floor are on the same side of the faulty floor, the target floor is designated as the target stopping floor. When the car and the target floor are on opposite sides of the faulty floor, the target stopping floor is determined based on the car position and the safety zone. When the car is within the safety zone, and the target floor is outside the safety zone, the target stopping floor is determined based on the car position and the safety zone to perform rescue operations. The target floor is the floor selected by the user.

2. The method according to claim 1, characterized in that, Each floor is equipped with a lobby door lock. The process of determining the faulty floor includes: Obtain the location of the malfunctioning hall door lock; The faulty floor is determined based on the location of the hall door lock.

3. The method according to claim 1, characterized in that, The method further includes: When the car is outside the safety zone, the elevator is brought to an emergency stop. The target floor is determined based on the car's position and the safety zone, and rescue operations are performed after the elevator comes to an emergency stop based on the target floor.

4. The method according to claim 3, characterized in that, Determining the target floor based on the car position and the safety zone includes: The limit position of the safety zone is determined based on the car position and the safety zone, and the floor that is closest to the limit position of the safety zone and is within the safety zone is taken as the target stopping floor, and the faulty floor is not included between the car position and the target stopping floor.

5. The method according to claim 1, characterized in that, The step of determining the safe zone based on the faulty floor includes: The elevator's operating speed and braking capacity are obtained; The target safety distance is determined based on the operating speed and the braking capability; The safe zone is determined based on the target safe distance and the faulty floor.

6. The method according to claim 5, characterized in that, Determining the target safe distance based on the operating speed and the braking capability includes: The distance adjustment parameters are determined based on the operating speed and the braking capacity; The target safe distance is obtained by adjusting the preset safe distance based on the distance adjustment parameters.

7. The elevator control method according to claim 1, characterized in that, The step of determining the safe zone based on the faulty floor includes: The safe zone is determined based on the faulty floor and the preset safe distance.

8. The elevator control method according to claim 1, characterized in that, The method further includes: The preset service floor range of the elevator is adjusted according to the safety zone.

9. An elevator control device, characterized in that, The elevator control device is used to implement the elevator control method as described in any one of claims 1-8, the device comprising: The first determining module is used to determine the faulty floor and determine a safe area based on the faulty floor; The second determining module is used to determine the target stopping floor based on the car position, the target floor, and the safety area when the car is within the safety area, so as to perform a rescue operation based on the target stopping floor, wherein the target floor is the floor selected by the user.

10. An elevator controller, characterized in that, The system includes a memory, a processor, and an elevator control program stored in the memory and executable on the processor. When the processor executes the elevator control program, it implements the elevator control method according to any one of claims 1-8.

11. A computer-readable storage medium, characterized in that, It stores an elevator control program, which, when executed by a processor, implements the elevator control method according to any one of claims 1-8.

12. An elevator safety system, characterized in that, The elevator control method according to any one of claims 1-8 is applied to the elevator safety system, the system comprising: Safety circuit, the safety circuit including a plurality of electrical safety switches; A safety device is used to detect the operating status of the electrical safety switch and generate a corresponding status detection signal; A car position detection device is used to detect the car position of the elevator. An elevator controller, connected to the safety device and the car position detection device, is used to determine the faulty floor based on the status detection signal, determine a safe area based on the faulty floor, and when the car position is within the safe area, determine a target stopping floor based on the car position, the target floor, and the safe area, so as to perform a rescue operation based on the target stopping floor, wherein the target floor is the floor selected by the user.

13. An elevator, characterized in that, Including the elevator safety system according to claim 12.

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