Elevator star sealing control system and method

Abstract

The elevator star sealing control system comprises an encoder configured to acquire a real-time speed of the elevator; a controller configured to control normal operation of the elevator, compare the real-time speed of the elevator with a preset speed, and set a star sealing delay time; and a star sealing system, a control end of the star sealing system being electrically connected to an output end of the controller, so that the controller controls the star sealing system to perform star sealing work after the star sealing delay time. According to the running state of the elevator, i.e. whether the real-time speed of the elevator is in a normal running condition or an abnormal running condition, the star sealing delay time is set before the star sealing work is performed, and the time when the star sealing work is started is appropriately set, so that the safety during the running of the elevator can be ensured through the star sealing work, and the damage risk of the motor caused by the star sealing work can be reduced by setting different star sealing delay times according to the running state of the elevator.

Description

Technical Field

[0001] This disclosure relates to the field of elevators, and in particular to an elevator sealing star control system and method. Background Technology

[0002] A star-connected synchronous motor refers to a situation where the main contactor is open and the star-connector is closed, forming a star-shaped circuit for the motor. When the brake fails, the elevator rolls under gravity. The elevator then moves in the direction of the heavier load (up or down), driving the motor to rotate. When a permanent magnet synchronous motor rotates under external force, it acts like a generator. When the generator output is short-circuited, the rotor resistance is very high, limiting the motor speed to ensure safety. During operation, the star-connected circuit generates current through the motor, dissipating this energy as coil heat. Therefore, the characteristics of a star-connected circuit are: low coil heat generation at low speeds (or when starting from rest) reduces the risk of burning out motor components (coils, insulation, permanent magnets, etc.); however, high coil heat generation at higher speeds easily burns out motor components (coils, insulation, permanent magnets demagnetizing due to high temperatures), causing permanent damage to the motor. Summary of the Invention

[0003] This disclosure provides an elevator sealing control system and method, which at least helps to solve the problem of motor damage when the elevator is moving at high speed.

[0004] According to some embodiments of this disclosure, one aspect of this disclosure provides an elevator sealing control system, including: an encoder configured to acquire the real-time speed of the elevator; a controller configured to control the elevator to operate normally and compare the real-time speed of the elevator with a preset speed to set a sealing delay time; and a sealing system, wherein the control terminal of the sealing system is electrically connected to the output terminal of the controller, so that the controller controls the sealing system to perform sealing work after the sealing delay.

[0005] In some embodiments, the controller includes: a first control unit configured to compare the real-time speed of the elevator with a preset speed; if the real-time speed of the elevator is within the preset speed range, then set a first sealing delay time; if the real-time speed of the elevator is not within the preset speed range, then set a second sealing delay time; wherein the first sealing delay time is greater than the second sealing delay time.

[0006] In some embodiments, the satellite sealing system includes: a satellite sealing delay device, the control terminal of which is electrically connected to the output terminal of the first control unit, for performing satellite sealing delay work according to the satellite sealing delay time set by the controller; and a satellite sealing contactor, the control terminal of which is electrically connected to the output terminal of the satellite sealing delay device, the satellite sealing delay device controlling the closing or opening of the satellite sealing contactor.

[0007] In some embodiments, the controller further includes: a second control unit configured to control elevator operation; and a third control unit configured to brake the elevator.

[0008] In some embodiments, the controller further includes: a speed feedback unit, the encoder being electrically connected to the input terminal of the speed feedback unit, and the first control unit, the second control unit, and the third control unit being electrically connected to the output terminal of the speed feedback unit, so that the first control unit can compare the real-time speed of the elevator with a preset speed, and the second control unit and the third control unit can control the operation or braking of the elevator according to the real-time speed of the elevator.

[0009] In some embodiments, the elevator sealing control system further includes a motor, the encoder being electrically connected to the motor, and the encoder obtaining the real-time speed of the elevator through the motor.

[0010] According to some embodiments of this disclosure, another aspect of this disclosure provides an elevator star-sealing control method, applicable to any of the star-sealing control systems described above, comprising: acquiring the real-time speed of the elevator; during elevator deceleration, comparing the real-time speed of the elevator with a preset speed, and setting a star-sealing delay time; performing star-sealing delay operation according to the set star-sealing delay time; determining whether the elevator speed after the star-sealing delay is greater than or equal to a first preset speed value; if the elevator speed after the star-sealing delay is less than the first preset speed, and the elevator is in a normal deceleration state, then determining whether the elevator generates a fault signal; if the elevator generates a fault signal, then the elevator normally decelerates to a second preset speed value; after the elevator normally decelerates to the second preset speed value, performing elevator star-sealing operation.

[0011] In some embodiments, after determining whether the elevator speed after the star-sealing delay is greater than or equal to the first preset speed value, the method further includes: if the elevator speed after the star-sealing delay is greater than or equal to the first preset speed, the elevator is in an abnormal deceleration state and the elevator star-sealing operation is performed.

[0012] In some embodiments, after determining whether the elevator has generated a fault signal, the method further includes: if the elevator has not generated a fault signal, the elevator normally decelerates to a third preset speed value; after the elevator normally decelerates to the third preset speed value, the elevator star-sealing operation is performed.

[0013] In some embodiments, the first preset speed value is greater than the second preset speed value, and the second preset speed value is greater than the third preset speed value.

[0014] The technical solutions provided in this disclosure have at least the following advantages:

[0015] The elevator sealing control system technical solution provided in this disclosure includes: an encoder configured to acquire the real-time speed of the elevator; a controller configured to control the elevator to operate normally and compare the real-time speed of the elevator with a preset speed to set a sealing delay time; and a sealing system, the control terminal of which is electrically connected to the output terminal of the controller, so that the controller can control the sealing system to perform sealing work after the sealing delay. This disclosure, by setting a sealing delay time before performing sealing work, and setting an appropriate start time for sealing work based on the elevator's operating state (i.e., whether the elevator's real-time speed is under normal operating conditions or abnormal operating conditions), can ensure the safety of the elevator during operation through sealing work. Furthermore, by setting different sealing delay times according to the elevator's operating state, the risk of damage to the motor caused by sealing work can be reduced. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with corresponding pictures in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Unless otherwise stated, the pictures in the accompanying drawings do not constitute a limitation on scale. In order to more clearly illustrate the technical solutions in the embodiments of this disclosure or the conventional technology, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an elevator sealing star control system provided in an embodiment of the present disclosure;

[0018] Figure 2 A flowchart of an elevator sealing star control method provided in an embodiment of this disclosure;

[0019] Figure 3 This is a control timing diagram of an elevator sealing star control method provided in an embodiment of the present disclosure. Detailed Implementation

[0020] As the background technology explains, a star-connected synchronous motor refers to the main contactor being open and the star-connected contactor being closed, forming a star circuit for the motor. When the elevator brake fails, the elevator rolls under gravity. The elevator then moves towards the heavier direction under gravity, causing the car to move up or down. This car movement drives the motor to rotate, and due to inertia, the motor will rotate faster and faster. By adding a star-connected contactor to the motor's three-phase circuit, the permanent magnet synchronous motor, when rotated under external force, acts like a generator. When the generator output is short-circuited, the rotor resistance is very high, and the motor speed is limited to ensure safety.

[0021] When the star-sealing circuit is working, it generates current through the motor, dissipating this energy as heat from the coils. Therefore, when the elevator is moving at low speeds, the heat generated by the coils is minimal, making it less likely to burn out motor components. However, when the elevator is running at higher speeds, the heat generated by the coils is significant, easily burning out motor components and causing permanent damage. Therefore, the star-sealing circuit is designed with a specific star-sealing delay control based on different elevator operating states to ensure compatibility with various application scenarios while minimizing the extent of motor damage.

[0022] This disclosure provides an elevator sealing control system and method, which at least helps to solve the problem of motor damage when the elevator is moving at high speed.

[0023] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the embodiments of this disclosure to facilitate a better understanding of the disclosure. However, the technical solutions claimed in this disclosure can be implemented even without these technical details and various variations and modifications based on the following embodiments.

[0024] Figure 1 This is a schematic diagram of the structure of an elevator sealing star control system provided in one embodiment of the present disclosure.

[0025] refer to Figure 1 The elevator sealing control system includes: an encoder 5, configured to acquire the real-time speed of the elevator; a controller, configured to control the elevator to operate normally, compare the real-time speed of the elevator with the preset speed, and set the sealing delay time; and a sealing system, the control terminal of the sealing system being electrically connected to the output terminal of the controller so that the controller can control the sealing system to perform the sealing operation after the sealing delay.

[0026] Specifically, the input terminal of the controller is electrically connected to the output terminal of encoder 5. Encoder 5 outputs an electrical signal containing the real-time speed data of the elevator to the controller. After receiving the electrical signal containing the real-time speed data, the controller compares the real-time speed of the elevator with the preset speed. The preset speed should be understood as the speed of the elevator in normal operation. Since the normal operation speed varies for different elevator models (e.g., 1m / s-1.5m / s), the preset speed can be set according to the actual elevator model and actual needs in practical applications. The purpose of the controller comparing the real-time speed of the elevator with the preset speed is to set the star-sealing delay time. That is, regardless of whether the elevator is in normal operation or not, the star-sealing operation needs to be performed on the elevator. Different star-sealing delay times are set before the star-sealing operation based on the real-time speed of the elevator.

[0027] In this embodiment of the present disclosure, the controller includes: a first control unit 2, configured to compare the real-time speed of the elevator with a preset speed; if the real-time speed of the elevator is within the preset speed range, then set a first sealing delay time; if the real-time speed of the elevator is not within the preset speed range, then set a second sealing delay time; wherein the first sealing delay time is greater than the second sealing delay time.

[0028] Specifically, the controller also includes: a speed feedback unit 1, which is located within the controller. The output of the encoder 5 is electrically connected to the input of the speed feedback unit 1. The encoder 5 outputs an electrical signal containing real-time speed data of the elevator to the speed feedback unit 1. The output of the speed feedback unit 1 is electrically connected to the input of the first control unit 2. The first control unit 2 then receives the electrical signal containing real-time speed data of the elevator transmitted by the speed feedback unit 1.

[0029] In some embodiments, the elevator sealing control system further includes: a motor 6, an encoder 5 electrically connected to the motor 6, and the encoder 5 obtains the real-time speed of the elevator through the motor 6.

[0030] The first control unit 2 compares the elevator's real-time speed with the preset speed. If the elevator's real-time speed is within the preset speed range, meaning the elevator is in normal operation and there is no abnormal speed or other malfunction, a first sealing delay time is set for the elevator in normal operation. At this time, the elevator is in a normal deceleration or uniform speed operation state. Setting the first sealing delay time before entering the sealing operation can reduce the instantaneous current of the motor 6 during sealing. The sealing current of the motor 6 at this time is much smaller than the rated current of the motor 6. This can ensure the safety of the elevator during operation while preventing serious damage to the motor 6.

[0031] The first control unit 2 compares the elevator's real-time speed with the preset speed. If the elevator's real-time speed is not within the preset speed range, indicating an abnormal operating state, a second sealing delay time is set for the elevator in this abnormal operating state. The first sealing delay time is longer than the second sealing delay time. This means that compared to an elevator in normal operation, the control unit can initiate the sealing operation faster, thus braking the elevator more quickly and improving safety during operation. Furthermore, compared to immediately sealing the elevator when an abnormal operating state occurs or when the elevator is running at high speed, setting a certain sealing delay time can prevent the three-phase coils of the motor 6 from generating currents several times or more than the rated current, thereby preventing the motor 6 from being subjected to shock.

[0032] The delay times for the first and second star sealing can be set according to the actual elevator model and actual needs, as long as the delay time for the first star sealing is greater than the delay time for the second star sealing. No restrictions are imposed here.

[0033] In this embodiment of the disclosure, the sealing delay time is set according to the specific operating status of the elevator before the sealing work is carried out. On the one hand, the operation safety of the elevator can be guaranteed, and on the other hand, unnecessary damage to the motor 6 caused by the sealing work can be reduced.

[0034] In this embodiment, the satellite sealing system includes: a satellite sealing delay device 10, the control terminal of which is electrically connected to the output terminal of the first control unit 2, for performing satellite sealing delay work according to the satellite sealing delay time set by the controller; and a satellite sealing contactor, the input terminal of which is electrically connected to the output terminal of the satellite sealing delay device 10, after the first control unit 2 controls the satellite sealing delay device 10 to perform the set satellite sealing delay time, it controls the satellite sealing contactor to close or open.

[0035] Specifically, the contacts of the sealing contactor are in an open state when the elevator is running normally, and in a closed state when the elevator needs to be sealed, thereby achieving the purpose of short-circuiting the three-phase coils of the motor.

[0036] In some other embodiments, the sealing contactor can be a normally closed sealing contactor, which can keep the contacts closed when the elevator is powered off, thus achieving the sealing function and making the overall operation of the elevator safer and more reliable. Alternatively, the sealing contactor can be a normally open sealing contactor, which can keep the contacts open during emergency braking of the elevator to prevent high-voltage current surges in the motor 6, and close again when the elevator speed drops to a preset range.

[0037] In this embodiment, the control terminal of the sealing delay device 10 is electrically connected to the output terminal of the first control unit 2. After comparing the real-time speed of the elevator with the preset speed, the first control unit 2 sets a certain sealing delay time according to the comparison result. The first control unit 2 outputs an electrical signal containing the length of the sealing delay time to the sealing delay device 10. After the set sealing delay time ends, the first control unit 2 controls the sealing contactor to close, thereby performing the sealing operation.

[0038] In this embodiment of the present disclosure, the controller further includes: a second control unit 3 configured to control the operation of the elevator; and a third control unit 4 configured to brake the elevator.

[0039] Specifically, the elevator sealing control system also includes a frequency converter 12. In this embodiment, the frequency converter 12 is used to control the normal operating speed of the elevator. The output terminal of the frequency converter 12 is connected to the input terminal of the motor 6. The main contactor is located between the frequency converter 12 and the motor 6, and the sealing contactor is located between the frequency converter 12 and the motor 6. Specifically, when the elevator is not performing sealing operation, the second control unit 3 outputs an electrical signal to the operation controller 11. The operation controller 11 controls the main contactor contacts to close, connecting the frequency converter 12 and the motor 6. The frequency converter 12 adjusts the speed of the motor 6 by changing the power supply frequency, thereby controlling the normal operation of the elevator. When the elevator is running between floors, the frequency converter 12 gradually increases the speed of the motor 6, causing the elevator to start running until the elevator car reaches the target floor. When the elevator car is about to reach the target floor, the frequency converter 12 gradually decreases the speed of the motor 6, causing the elevator car to stop smoothly at the target floor.

[0040] In some embodiments, the frequency converter 12 may be an open-loop vector control frequency converter, a closed-loop vector control frequency converter, or a direct torque control frequency converter, etc. All of the above-mentioned frequency converters 12 can realize the operation control of the elevator, and can be selected according to actual needs and application occasions, without limitation.

[0041] In some embodiments, the motor 6 can be an AC elevator motor or a DC elevator motor. In this embodiment, the motor 6 is an AC elevator motor. The voltage and power frequency of the AC elevator motor can be set according to the number of passengers the elevator needs to carry. Alternatively, a DC elevator motor can be selected according to actual needs.

[0042] Simultaneously, the output of the third control unit 4 is electrically connected to the input of the brake controller 7. The brake controller 7 controls the opening and closing of the power supply to the brake 8. Specifically, when the elevator is not in the sealing operation phase, the third control unit 4 outputs an electrical signal to the brake controller 7, which then controls the connection between the power supply to the brake 8 and the brake 8. During normal elevator operation, the brake 8 can adjust the elevator speed to ensure accurate leveling. When the elevator is stationary, it ensures that the elevator remains stationary, further improving elevator performance. The second control unit 3 and the third control unit 4 work together to maintain the normal operation of the elevator.

[0043] In some embodiments, the brake 8 may be a drum brake 8, a disc brake 8, a band brake 8, an electromagnetic brake 8, or a hydraulic brake 8, as long as it can achieve the braking effect of the brake 8 on the elevator. The type of brake 8 is not limited here.

[0044] In this embodiment of the disclosure, the first control unit 2, the third control unit 4, and the speed feedback unit 1 are all disposed within the main controller.

[0045] After the set sealing delay time, the elevator begins the sealing operation. The second control unit 3 controls the main contactor contacts to open, disconnecting the inverter 12 from the motor 6. The third control unit 4 outputs a control signal to the brake controller 7, which disconnects the power supply to the brake 8 and the brake 8 itself. The first control unit 2 controls the sealing contactor to close. At this time, the inverter 12 does not output current and the main contactor is open, thus short-circuiting the three-phase coils of the motor 6. From the opening of the main contactor contacts to the closing of the sealing contactor contacts, the opening of the main contactor cuts off the connection between the inverter 12 and the motor 6. At this time, the motor 6 is in an open-circuit state, and the current of the motor 6 is zero. In this embodiment, the sealing contactor uses a contactor with normally closed main contacts to ensure that the three-phase coils of the motor 6 can still be short-circuited even if the elevator loses power. For high-speed elevators, since large-specification sealing contactors with normally closed main contacts are less common, sealing contactors with normally open main contacts can also be used.

[0046] In some embodiments, the encoder 5 is electrically connected to the input terminal of the speed feedback unit 1, and the first control unit 2, the second control unit 3 and the third control unit 4 are electrically connected to the output terminal of the speed feedback unit 1, so that the first control unit 2 can compare the real-time speed of the elevator with the preset speed, and the second control unit 3 and the third control unit 4 can control the operation or braking of the elevator according to the real-time speed feedback of the elevator.

[0047] Specifically, encoder 5 is electrically connected to motor 6. Motor 6 rotates when the elevator is moving. The real-time speed of the elevator is obtained by acquiring the resolution of encoder 5 and the number of pulses output by encoder 5 within a certain time. Encoder 5 can be a photoelectric encoder or a Hall encoder, etc., and is not limited here.

[0048] The elevator sealing control system provided in this embodiment includes an encoder configured to acquire the real-time speed of the elevator; a controller configured to control the elevator to operate normally and compare the real-time speed of the elevator with a preset speed to set a sealing delay time; and a sealing system, the control terminal of which is electrically connected to the output terminal of the controller, so that the controller can control the sealing system to perform sealing work after the sealing delay. This embodiment, by setting a sealing delay time before performing sealing work, and setting an appropriate start time for sealing work based on the elevator's operating state (i.e., whether the elevator's real-time speed is under normal operating conditions or abnormal operating conditions), can ensure the safety of the elevator during operation through sealing work. Furthermore, by setting different sealing delay times according to the elevator's operating state, the risk of damage to the motor caused by sealing work can be reduced.

[0049] Accordingly, another embodiment of this disclosure also provides an elevator sealing star control method, applicable to the elevator sealing star control system provided in the above embodiments. The elevator sealing star control method provided in another embodiment of this disclosure will be described in detail below with reference to the accompanying drawings. For parts that are the same as or corresponding to the previous embodiment, please refer to the corresponding descriptions of the foregoing embodiments.

[0050] Figure 2 A flowchart of an elevator sealing control method provided in an embodiment of this disclosure. Figure 3 This is a control timing diagram of an elevator sealing star control method provided in an embodiment of the present disclosure.

[0051] like Figure 2 and Figure 3 As shown, another aspect of this disclosure provides an elevator sealing control method, which includes the following steps.

[0052] In step S201, the real-time speed of the elevator is obtained.

[0053] Specifically, in this embodiment, the encoder is electrically connected to the motor, which rotates when the elevator is moving. The real-time speed of the elevator is obtained by acquiring the encoder's resolution and the number of pulses output by the encoder within a certain time period. The encoder can be a photoelectric encoder or a Hall encoder, etc., and is not limited thereto.

[0054] In step S202, during the elevator deceleration process, the real-time speed of the elevator is compared with the preset speed, and the sealing delay time is set.

[0055] Specifically, the preset speed should be understood as the speed of the elevator when it is in normal operation or the rated speed of the elevator. Since the speed of different elevator models when in normal operation is different, for example, it can be 1m / s-1.5m / s. In actual application, the preset speed can be set according to the actual elevator model and actual needs.

[0056] In step S203, the star-sealing delay is performed according to the set star-sealing delay time.

[0057] Specifically, the sealing delay is set based on the comparison between the elevator's real-time speed and the preset speed. If the elevator's real-time speed is within the preset speed range, a first sealing delay time is set. If the elevator's real-time speed is not within the preset speed range, a second sealing delay time is set. The first sealing delay time is longer than the second sealing delay time.

[0058] In step S204, it is determined whether the elevator speed after the star-sealing delay is greater than or equal to the first preset speed value.

[0059] Specifically, after a certain star-sealing delay but before the star-sealing work begins, this embodiment of the present disclosure adds a step to determine the elevator speed after the star-sealing delay.

[0060] In this embodiment of the disclosure, after determining whether the elevator speed after the star-sealing delay is greater than or equal to the first preset speed value, the method further includes: if the elevator speed after the star-sealing delay is greater than or equal to the first preset speed, the elevator is in an abnormal deceleration state and the elevator star-sealing operation is performed.

[0061] By adding a step to determine the elevator speed after the star-sealing delay, and further setting an appropriate start time for the star-sealing operation based on the elevator's real-time status, the damage to the motor caused by the star-sealing operation can be further reduced while ensuring the elevator's operational safety.

[0062] In step S205, if the elevator speed after the star-sealing delay is less than the first preset speed, the elevator is in a normal deceleration state, and it is then determined whether the elevator has generated a fault signal.

[0063] Specifically, the elevator may experience fault signals such as power outage or abnormal safety circuit, but at this time the elevator is still in the normal deceleration process.

[0064] In step S206, if the elevator generates a fault signal, the elevator will decelerate normally to the second preset speed value.

[0065] In this embodiment of the disclosure, after determining whether the elevator has generated a fault signal, the procedure further includes: if the elevator has not generated a fault signal, the elevator normally decelerates to a third preset speed value; after the elevator normally decelerates to the third preset speed value, the elevator sealing operation is performed.

[0066] In step S207, after the elevator decelerates normally to the second preset speed value, the elevator sealing operation is performed.

[0067] Specifically, the second preset speed value can be set such that the elevator performs a sealing operation at this speed to minimize the damage to the motor, and then the sealing operation is performed again to slow down and stop the elevator.

[0068] In this embodiment, the first preset speed value is greater than the second preset speed value, and the second preset speed value is greater than the third preset speed value. In practical applications, the first, second, and third preset speed values ​​can be set according to the actual elevator model and actual needs, and there is no limitation on this.

[0069] In this embodiment of the disclosure, after a certain star-sealing delay, before the star-sealing work begins, this embodiment of the disclosure adds a step to determine the elevator speed after the star-sealing delay. By adding a step to determine the elevator speed after the star-sealing delay, a suitable time to start the star-sealing work can be set according to the real-time status of the elevator. On the basis of ensuring the safe operation of the elevator, the damage caused to the motor by the star-sealing work can be further reduced.

[0070] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of this disclosure. Any person skilled in the art can make various alterations and modifications without departing from the spirit and scope of this disclosure; therefore, the scope of protection of this disclosure should be determined by the scope defined in the claims.

Claims

1. An elevator sealing star control system, characterized in that, include: The encoder is configured to acquire the elevator's real-time speed. The controller is configured to control the elevator to operate normally and, during the elevator deceleration process, compare the elevator's real-time speed with the preset speed and set the star-sealing delay time. In addition, determine whether the elevator speed after the star-sealing delay is greater than or equal to the first preset speed value; If the elevator speed after the star-sealing delay is less than the first preset speed value, the elevator is in a normal deceleration state. Then, it is determined whether the elevator has generated a fault signal. If the elevator generates a fault signal, the elevator decelerates normally to the second preset speed value. After the elevator decelerates to the second preset speed value, the elevator sealing operation is performed. The satellite sealing system has its control terminal electrically connected to the output terminal of the controller, so that the controller can control the satellite sealing system to perform the satellite sealing operation after a satellite sealing delay.

2. The satellite sealing control system according to claim 1, characterized in that, The controller includes: The first control unit is configured to compare the real-time speed of the elevator with a preset speed during the elevator deceleration process. If the real-time speed of the elevator is within the preset speed range, a first sealing delay time is set; if the real-time speed of the elevator is not within the preset speed range, a second sealing delay time is set; wherein the first sealing delay time is greater than the second sealing delay time.

3. The satellite sealing control system according to claim 2, characterized in that, The star-sealing system includes: A satellite sealing delay device, wherein the control terminal of the satellite sealing delay device is electrically connected to the output terminal of the first control unit, and is used to perform satellite sealing delay work according to the satellite sealing delay time set by the controller; A star-sealing contactor, wherein the control terminal of the star-sealing contactor is electrically connected to the output terminal of the star-sealing delay device, and the star-sealing delay device controls the closing or opening of the star-sealing contactor.

4. The satellite sealing control system according to claim 2, characterized in that, The controller also includes: The second control unit is configured to control the operation of the elevator; The third control unit is configured to brake the elevator.

5. The satellite sealing control system according to claim 4, characterized in that, The controller also includes: A speed feedback unit is provided, wherein the encoder is electrically connected to the input terminal of the speed feedback unit, and the first control unit, the second control unit, and the third control unit are electrically connected to the output terminal of the speed feedback unit, so that the first control unit can compare the real-time speed of the elevator with the preset speed, and the second control unit and the third control unit can control the operation or braking of the elevator according to the real-time speed of the elevator.

6. The satellite sealing control system according to claim 1, characterized in that, The elevator sealing star control system also includes: The encoder is electrically connected to the electric motor and obtains the real-time speed of the elevator through the electric motor.

7. A method for controlling the sealing of an elevator, characterized in that, The satellite sealing control system according to any one of claims 1-6 comprises: Obtain the elevator's real-time speed; During the elevator deceleration process, the real-time speed of the elevator is compared with the preset speed, and the sealing delay time is set. Perform the star-sealing delay operation according to the set star-sealing delay time; Determine whether the elevator speed after the star-sealing delay is greater than or equal to the first preset speed value; If the elevator speed after the star-sealing delay is less than the first preset speed value, the elevator is in a normal deceleration state. Then it is determined whether the elevator has generated a fault signal. If the elevator generates a fault signal, the elevator will decelerate normally to the second preset speed value; After the elevator decelerates to the second preset speed value, the elevator sealing operation is carried out.

8. The satellite sealing control method according to claim 7, characterized in that, After determining whether the elevator speed after the star-sealing delay is greater than or equal to the first preset speed value, the method further includes: If the elevator speed after the star-sealing delay is greater than or equal to the first preset speed, the elevator is in an abnormal deceleration state, and the elevator star-sealing operation is performed.

9. The satellite sealing control method according to claim 7, characterized in that, The process of determining whether the elevator has generated a fault signal also includes: If the elevator does not generate a fault signal, the elevator will decelerate normally to the third preset speed value; After the elevator decelerates to the third preset speed value, the elevator sealing operation will be carried out.

10. The satellite sealing control method according to claim 9, characterized in that, The first preset speed value is greater than the second preset speed value, and the second preset speed value is greater than the third preset speed value.

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