WO2023284291A1

WO2023284291A1 - Elevator power failure emergency device, method and apparatus, and elevator

Info

Publication number: WO2023284291A1
Application number: PCT/CN2022/075880
Authority: WO
Inventors: 荣洪凯; 唐其伟; 刘真; 袁俊波; 郭耀; 赖敏桂
Original assignee: 日立楼宇技术（广州）有限公司
Priority date: 2021-07-14
Filing date: 2022-02-10
Publication date: 2023-01-19
Also published as: CN113526285B; CN113526285A

Abstract

An elevator power failure emergency device, method and apparatus, and an elevator. The elevator power failure emergency device comprises an emergency power source device and an elevator controller. The emergency power source device comprises a power source controller, an energy storage device and a switch unit, wherein the power source controller is connected to the energy storage device, the switch unit and the elevator controller; the power source controller is used, when a power grid is in an abnormal running state, for instructing the switch unit to turn on a connection between the energy storage device and the elevator controller, and for transmitting a power supply request signal to the elevator controller; the elevator controller is used for acquiring a bus voltage value and the current running state of an elevator, and for generating a response signal according to the current running state of the elevator, the bus voltage value and the power supply request signal; and the power source controller is used for instructing, according to the received response signal, the switch unit to turn on a connection between the energy storage device and an electrical driving device of the elevator. By means of the elevator power failure emergency device, an emergency stop of an elevator caused by the braking of a contracting brake is avoided.

Description

Elevator power failure emergency equipment, method, device and elevator

technical field

The present application relates to the technical field of elevators, in particular to an elevator power failure emergency equipment, method, device and elevator.

Background technique

As an electromechanical device, an elevator requires external electrical energy to maintain its traction system. However, if the power grid fails during the operation of the elevator, the passengers in the car will be trapped. In order to facilitate the rescue of trapped passengers, the elevator is generally equipped with a backup power supply. When the elevator power supply fails, if the elevator safety system meets the operation requirements, the elevator switches to the backup power supply, optimizes the running direction and stops at the nearest floor to release the trapped passengers in the car.

During the implementation process, the inventors found at least the following problems in the traditional technology: the traditional power failure emergency technology has problems such as low safety and large braking impact.

Contents of the invention

Based on this, it is necessary to address the above technical problems and provide an elevator power failure emergency equipment, method, device and elevator that can improve safety and reduce braking impact.

In order to achieve the above object, on the one hand, an embodiment of the present invention provides an elevator power failure emergency equipment, including emergency power supply equipment and an elevator controller; the emergency power supply equipment includes a power supply controller, energy storage equipment and a switching unit; the power supply controller is connected to Energy storage devices, switching units and elevator controllers;

The power controller is used to instruct the switching unit to connect the energy storage device and the elevator controller when the power grid is in an abnormal operation state, and transmit a power supply request signal to the elevator controller;

The elevator controller is used to obtain the bus voltage value and the current running state of the elevator, and generate a response signal according to the current running state of the elevator, the bus voltage value and the power supply request signal;

The power controller is used to instruct the switching unit to conduct the connection between the energy storage device and the electric drive device of the elevator according to the received response signal.

In one of the embodiments, the elevator controller includes a main microcomputer controller and a secondary microcomputer controller;

The main microcomputer controller is used to receive the power supply request signal, and transparently transmit the power supply request to the secondary microcomputer controller;

The secondary microcomputer controller is used to obtain the bus voltage value and the current running state of the elevator, and generate a response signal according to the current running state of the elevator, the bus voltage value and the power supply request signal.

In one of the embodiments, the emergency power supply equipment also includes power grid monitoring equipment;

The power grid monitoring equipment is used to transmit the detected grid operation status to the power controller.

In one of the embodiments, the emergency power supply equipment also includes energy storage detection equipment;

The energy storage detection device is connected to the energy storage device and the elevator controller respectively.

On the one hand, the embodiment of the present invention also provides an elevator power failure emergency method, which is applied to the elevator power failure emergency equipment as described above, and the method includes the steps of:

When the power grid is in an abnormal operation state, the power controller instructs the switching unit to connect the energy storage device to the elevator controller, and transmits a power supply request signal to the elevator controller;

The elevator controller obtains the bus voltage value and the current running state of the elevator, and generates a response signal according to the current running state of the elevator, the bus voltage value and the power supply request signal;

The power controller instructs the switching unit to conduct the connection between the energy storage device and the electric drive device of the elevator according to the received response signal.

In one embodiment, the power controller is used to instruct the switching unit to connect the energy storage device to the brake power supply when the power grid is in an abnormal operation state.

On the one hand, the embodiment of the present invention also provides an elevator power failure emergency method, comprising steps:

Receive the power supply request signal; the power supply request signal is sent by the power controller when the power grid is in an abnormal operation state;

Obtain the bus voltage value and the current running state of the elevator, and generate a response signal according to the current running state of the elevator, the bus voltage value and the power supply request signal, so that the power controller controls the switching unit to conduct the energy storage device and the electric drive device of the elevator Connection.

In one of the embodiments, it also includes the steps of:

Obtain the first energy provided by the backup energy source, the second energy generated by the elevator decelerating to the leveling speed, the third energy consumed by the elevator decelerating to the leveling speed, and the fourth energy consumed by the elevator performing the leveling action;

When the sum of the first energy and the second energy is less than the sum of the third energy and the fourth energy, instruct the elevator to decelerate to zero, and when the speed of the elevator is zero, control the elevator to perform leveling action.

In one of the embodiments, the step of instructing the elevator to decelerate to zero comprises:

Obtain the initial deceleration and the phase difference between the output voltage of the inverter and the output current of the inverter, and obtain the current deceleration according to the initial deceleration, the phase difference between the output voltage of the inverter and the output current of the inverter, and the bus voltage value;

Instruct the elevator to decelerate to zero according to the current deceleration.

In one of the embodiments, the step of instructing the elevator to decelerate to zero further includes the steps of:

Obtain the bus voltage value of the current cycle, the phase difference between the output voltage of the inverter and the output current of the inverter in the current cycle, the deceleration of the previous cycle and the bus voltage value of the previous cycle;

If the bus voltage value of the current cycle is greater than the bus voltage value of the previous cycle, the current deceleration is determined according to the preset first proportional adjustment coefficient, the deceleration and the phase difference of the previous cycle;

If the bus voltage value in the current cycle is smaller than the bus voltage value in the previous cycle, the current deceleration rate is determined according to the preset second proportional adjustment coefficient, the deceleration rate and the phase difference in the previous cycle.

In one of the embodiments, the step of determining the current deceleration according to the preset first proportional adjustment coefficient, the deceleration of the previous cycle and the phase difference includes:

Obtain the first product of the cosine value of the phase difference and the preset first proportional adjustment coefficient, and use the sum of the deceleration of the previous cycle and the first product as the current deceleration;

The step of determining the current deceleration according to the preset second proportional adjustment coefficient, the deceleration of the previous cycle and the phase difference includes:

The second product of the cosine value of the phase difference and the preset second proportional adjustment coefficient is obtained, and the sum of the deceleration in the previous cycle and the second product is used as the current deceleration.

In one of the embodiments, it also includes the steps of:

When the sum of the first energy and the second energy is greater than the sum of the third energy and the fourth energy, instruct the elevator to decelerate to the leveling speed, and when the speed of the elevator is the leveling speed, control the elevator to level the floor Speed for leveling action.

In one of the embodiments, the step of generating the response signal according to the current running state of the elevator, the bus voltage value and the power supply request signal includes:

A response signal is generated when the current running state of the elevator is the motor state, the bus voltage value continues to decrease within a preset time and a power supply request signal is received.

On the one hand, the embodiment of the present invention also provides an elevator power failure emergency device, including:

The receiving module is used to receive the power supply request signal; the power supply request signal is sent by the power controller when the power grid is in an abnormal operation state;

The control module is used to obtain the bus voltage value and the current running state of the elevator, and generate a response signal according to the current running state of the elevator, the bus voltage value and the power supply request signal, so that the power controller controls the switching unit to conduct the energy storage device and the elevator connection of electrical dragging equipment.

On the one hand, the embodiment of the present invention also provides an elevator, including a memory and a processor, the memory stores a computer program, and the processor implements the steps of any one of the above methods when executing the computer program.

On the other hand, an embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of any one of the above-mentioned methods are implemented.

One of the above technical solutions has the following advantages and beneficial effects:

For the above elevator power failure emergency equipment, when the power grid is in an abnormal operation state, the power controller instructs the switching unit to supply power to the elevator controller, and outputs a power supply request signal to the elevator controller. The elevator controller judges whether the elevator generates a response signal according to the current running state of the elevator, the bus voltage value and the power supply request signal. The power controller instructs the energy storage device to supply energy to the electric drive device upon receiving the response signal. Through the above-mentioned elevator power failure emergency equipment, the elevator controller can still work normally when the power grid is abnormal to avoid emergency stop caused by brake braking, and at the same time, the energy storage device will not intervene in the electric drive equipment when the elevator can maintain normal operation Power supply is performed to improve the stability of the emergency power supply, thereby improving the safety of the elevator.

Description of drawings

The above and other objects, features and advantages of the present application will become more apparent through a more specific description of preferred embodiments of the present application shown in the accompanying drawings. The same reference numerals designate the same parts throughout the drawings, and the drawings are not intentionally scaled to actual size and the emphasis is on illustrating the gist of the application.

Fig. 1 is the first schematic structural block diagram of elevator power failure emergency equipment in an embodiment;

Fig. 2 is the second schematic structural block diagram of elevator power failure emergency equipment in an embodiment;

Fig. 3 is the 3rd schematic structural block diagram of elevator power failure emergency equipment in an embodiment;

Fig. 4 is the fourth schematic structural block diagram of elevator power failure emergency equipment in an embodiment;

Fig. 5 is a first schematic flow diagram of an emergency method for elevator power failure in one embodiment;

Fig. 6 is a second schematic flow diagram of an elevator power failure emergency method in an embodiment;

Fig. 7 is a second schematic flow diagram of an elevator power failure emergency method in an embodiment;

Fig. 8 is a first schematic flow diagram of the step of instructing the elevator to decelerate to zero in one embodiment;

Fig. 9 is a structural block diagram of an elevator power failure emergency device in one embodiment.

detailed description

In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. A preferred embodiment of the application is shown in the drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to and integrally integrated with the other element, or there may be an intervening element at the same time. The terms "mounted", "one end", "the other end" and similar expressions are used herein for the purpose of description only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used in the description of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application.

In one embodiment, as shown in Figure 1, a kind of emergency equipment for elevator power failure is provided, including emergency power supply equipment and elevator controller; emergency power supply equipment includes power supply controller, energy storage equipment and switching unit; power supply controller is respectively connected Energy storage devices, switching units and elevator controllers;

Wherein, the emergency power supply equipment is the equipment used to provide backup power supply in the elevator. The types of the elevator controller and the power controller are not limited, and can be set according to actual application conditions, for example, it can be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP) etc.; it can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The energy storage device may be any device capable of storing energy in the art, such as a storage battery. The switching unit is used to switch the connection relationship among the devices.

Specifically, any means in the art can be used to detect whether the power grid is in an abnormal operation state. For example, a power grid monitoring device can be used to monitor the power grid. When the power grid is in an abnormal operation state, the power grid monitoring device transmits abnormal data to the power controller. The power controller is connected to the switching unit, and when the power grid is in an abnormal operation state, instructs the switching unit to connect the energy storage device and the elevator controller, so that the elevator controller can still run when the power grid is abnormal. In a specific example, the power controller sends a control signal to the switching unit. The switching unit that receives the control signal conducts the connection between the energy storage device and the elevator controller. It should be noted that the switching unit may be a switch, a relay, a thyristor and other devices capable of breaking, and the specific connection relationship thereof will not be described in detail here. When the power grid is in an abnormal operation state, the power supply controller also transmits a power supply request signal to the elevator controller, for requesting whether to perform an action of supplying electric energy in the energy storage device to the electric drive device of the elevator. Further, the power controller is also used to instruct the switching unit to disconnect the elevator electric driving device from the grid when the grid is in an abnormal operation state, so as to cut off the input of the grid to avoid affecting the operation of the elevator. The power controller instructs the switching unit to reconnect to the grid after the grid is in normal operation and the elevator stops. The abnormal operation state of the power grid includes power grid disconnection, power grid voltage drop, and power grid voltage equalization. In a specific example, the power controller is used to instruct the switching unit to connect the energy storage device to the brake power supply when the power grid is in an abnormal operation state.

The elevator controller can use any means in the field to obtain the bus voltage value and the current running state of the elevator. The current running status of the elevator includes generator status and motor status. The elevator controller generates a response signal according to the current running state of the elevator, the bus voltage value and the power supply request signal. In a specific example, the elevator controller can first confirm whether the power supply request signal is received, and then determine the current running state of the elevator and the bus voltage Whether the value satisfies the preset condition, and a response signal is generated if the preset condition is met. In another specific example, the elevator controller can also obtain the bus voltage value and the current running state of the elevator, and determine whether the current running state of the elevator and the bus voltage value meet a preset condition, and when the preset condition is met and the power supply request is received In the case of a signal, an acknowledgment signal is generated. Exemplarily, the preset condition may be that the current running state of the elevator is a motor state, and the bus voltage value continues to decrease within a preset time. In other words, the elevator controller generates a response signal when the current running state of the elevator is the motor state, the bus voltage value continues to decrease within a preset time, and the power supply request signal is received.

The power controller receives the response signal generated by the elevator controller and instructs the switching unit to connect the energy storage device and the elevator drive device according to the response signal, so that the energy storage device supplies power to the elevator drive device.

For the elevator power failure emergency equipment mentioned above, when the power grid is in an abnormal operation state, the power controller instructs the switching unit to supply power to the elevator controller and brake power supply, and outputs a power supply request signal to the elevator controller. The elevator controller judges whether to generate a response signal according to the current running state of the elevator, the bus voltage value and the power supply request signal. The power controller instructs the energy storage device to supply energy to the electric drive device upon receiving the response signal. Through the above-mentioned elevator power failure emergency equipment, the elevator controller can still work normally when the power grid is abnormal to avoid emergency stop caused by brake braking, and at the same time, the energy storage device will not intervene in the electric drive equipment when the elevator can maintain normal operation Power supply is performed to improve the stability of the emergency power supply, thereby improving the safety of the elevator.

In one embodiment, as shown in Figure 2, the elevator controller includes a main microcomputer controller and a secondary microcomputer controller;

Specifically, the generation of the response signal is performed by the sub-microcomputer controller. Further, the secondary microcomputer controller is also used to match the target running speed and deceleration according to the current load of the elevator; it is also used to judge whether to execute the parking action according to the received leveling signal.

In one of the embodiments, as shown in Figure 3, the emergency power supply equipment also includes power grid monitoring equipment;

Specifically, the power grid monitoring device is used to monitor the operating state of the power grid, and may be any power grid monitoring device in the art. The grid monitoring equipment is connected with the power controller.

In one of the embodiments, as shown in Figure 4, the emergency power supply equipment also includes energy storage detection equipment;

Specifically, the energy storage detection device is used to detect the energy stored in the energy storage device and transmit it to the elevator controller.

In one embodiment, as shown in Figure 5, there is also provided an elevator power failure emergency method, which is applied to the elevator power failure emergency equipment as described above, and the method includes the steps of:

S510. When the power grid is in an abnormal operation state, the power controller instructs the switching unit to connect the energy storage device to the elevator controller, and transmits a power supply request signal to the elevator controller;

S520, the elevator controller obtains the bus voltage value and the current running state of the elevator, and generates a response signal according to the current running state of the elevator, the bus voltage value and the power supply request signal;

S530, the power controller instructs the switching unit to connect the energy storage device and the electric drive device of the elevator according to the received response signal.

In the elevator power failure emergency method described above, when the power grid is in an abnormal operation state, the power controller instructs the switching unit to supply power to the elevator controller, and outputs a power supply request signal to the elevator controller. The elevator controller judges whether the current energy supply of the elevator can satisfy the condition of keeping running according to the current running state of the elevator, the bus voltage value and the power supply request signal. When the result of the judgment is negative, a response signal is generated. The power controller instructs the energy storage device to supply energy to the electric drive device upon receiving the response signal. Through the above elevator power failure emergency method, the elevator controller can still work normally when the power grid is abnormal to avoid emergency stop caused by brake braking, and at the same time, the energy storage device will not intervene in the electric drive equipment when the elevator can maintain normal operation Power supply is performed to improve the stability of the emergency power supply, thereby improving the safety of the elevator.

In one embodiment, as shown in Figure 6, a kind of elevator power failure emergency method is provided, comprising steps:

S610, receiving a power supply request signal; the power supply request signal is sent by the power controller when the power grid is in an abnormal operation state;

S620. Obtain the bus voltage value and the current running state of the elevator, and generate a response signal according to the current running state of the elevator, the bus voltage value, and the power supply request signal, so that the power controller controls the switching unit to conduct the energy storage device and the electric tractor of the elevator. Connection of mobile devices.

Specifically, any means in the art can be used to detect whether the power grid is in an abnormal operation state. For example, a power grid monitoring device can be used to monitor the power grid. When the power grid is in an abnormal operation state, the power grid monitoring device transmits abnormal data to the power controller.

The current running status of the elevator includes generator status and motor status. The elevator controller generates a response signal according to the current running state of the elevator, the bus voltage value and the power supply request signal. In a specific example, the elevator controller can first confirm whether the power supply request signal is received, and then determine the current running state of the elevator and the bus voltage Whether the value satisfies the preset condition, and a response signal is generated if the preset condition is met. In another specific example, the elevator controller can also obtain the bus voltage value and the current running state of the elevator, and determine whether the current running state of the elevator and the bus voltage value meet a preset condition, and when the preset condition is met and the power supply request is received In the case of a signal, an acknowledgment signal is generated. Exemplarily, the preset condition may be that the current running state of the elevator is a motor state, and the bus voltage value continues to decrease within a preset time. In other words, the elevator controller generates a response signal when the current running state of the elevator is the motor state, the bus voltage value continues to decrease within a preset time, and the power supply request signal is received.

In one of the embodiments, as shown in Figure 7, the steps are also included:

S710, obtaining the first energy provided by the backup energy source, the second energy generated by the elevator decelerating to the leveling speed, the third energy consumed by the elevator decelerating to the leveling speed, and the fourth energy consumed by the elevator for leveling;

Among them, the backup energy includes the above-mentioned energy storage equipment and bus capacitor. The first energy includes the electric energy provided by the backup battery and the electric energy stored in the bus capacitor. The leveling speed is the leveling self-rescue speed of the elevator, also known as the self-rescue speed, which is a preset value, for example, it can be 0.1m/s.

Specifically, when the elevator decelerates, the elevator traction machine generates electricity, and the electric energy (that is, the second energy) generated during the deceleration process changes according to the change of the deceleration. In a specific example, the second energy is the maximum deceleration of the elevator. Energy generated during deceleration to leveling speed. When the elevator is in the state of power generation (generator state), the generated energy is fed back from the motor side to the DC side, which in turn causes the bus voltage to increase. The elevator is in the discharge state (motor state), and the bus voltage decreases.

It should be noted that the elevator also needs to maintain the operation of other equipment in the elevator during the deceleration operation, and the required electric energy is the third energy. The fourth energy is the electric energy required by the elevator for leveling self-rescue.

Further, the first energy, the second energy, the third energy and the fourth energy can be obtained by any means in the field. For example, the first energy may be obtained according to a calculation formula of the capacitor storage energy of the bus capacitor. The second energy can be obtained according to load, current speed, deceleration, and leveling speed. The third energy can be obtained according to the power of each device in the elevator. The fourth energy can be obtained according to load, leveling distance and leveling speed.

S720. Instruct the elevator to decelerate to zero when the sum of the first energy and the second energy is less than the sum of the third energy and the fourth energy, and control the elevator to perform floor leveling action when the speed of the elevator is zero.

Specifically, when the sum of the first energy and the second energy is less than the sum of the third energy and the fourth energy, that is, the energy that the elevator can provide is less than the energy consumed by the elevator for leveling after decelerating to the leveling speed , at this time instructs the elevator to decelerate to a stop, and after the stop, controls the elevator to perform leveling action. In one of the embodiments, the step of controlling the elevator to perform the leveling action includes: instructing the elevator to perform the parking action and instructing the elevator to hold The brake performs the action of lowering the brake.

The above-mentioned elevator power failure emergency method, when the grid power supply is abnormal, according to the obtained first energy, second energy, third energy and fourth energy, instructs the elevator to decelerate to zero and then perform leveling action, which realizes that after the grid power failure, The elevator can run to the leveling floor after slowing down and stopping, and smoothly switch from the normal operating condition to the emergency rescue condition. While realizing the safe rescue of the elevator, it can reduce the impact force of the elevator operation and improve the safety of the elevator.

In one of the embodiments, as shown in FIG. 8, the step of instructing the elevator to decelerate to zero includes:

S810, obtaining the initial deceleration and the phase difference between the output voltage and the output current of the frequency converter, and obtaining the current deceleration according to the initial deceleration, the phase difference between the output voltage and the output current of the frequency converter and the bus voltage value;

Wherein, the initial deceleration is the initial deceleration in the process of decelerating to zero, and the current deceleration is the deceleration at each moment in the process of decelerating to zero.

Specifically, the current deceleration can be obtained by any means according to the initial deceleration and the phase difference between the output voltage and the output current of the frequency converter. Since the phase difference changes in real time, the current deceleration also changes in real time.

In one embodiment, the initial deceleration is obtained according to the running direction of the elevator, the current running speed of the elevator and the current load of the elevator.

Specifically, the magnitude of the deceleration is related to the magnitude of the second energy, and the greater the deceleration, the more the second energy. The initial deceleration is the deceleration corresponding to the minimum energy required to maintain the current operation mode (leveling at the leveling speed after decelerating to the leveling speed, or leveling after decelerating to zero), that is, the minimum deceleration.

S820, instructing the elevator to decelerate to zero according to the current deceleration.

Through the above method, reducing the deceleration can further reduce the impact of the deceleration on the human body.

Obtain the bus voltage value of the current cycle, the phase difference between the output voltage and output current of the inverter in the current cycle, the deceleration of the previous cycle and the bus voltage value of the previous cycle;

Wherein, the cycle can be preset, for example, one cycle is 1s. That is, the bus voltage value at the current moment and the bus voltage value one second ago are obtained. For the second cycle, the deceleration of the previous cycle is the initial deceleration.

Specifically, if the bus voltage value in the current cycle is greater than the bus voltage value in the previous cycle, the deceleration needs to be reduced. In the motoring state, the phase difference between the output voltage of the inverter and the output current of the inverter is less than 90°. In one of the embodiments, the step of determining the current deceleration according to the preset first proportional adjustment coefficient, the deceleration of the previous cycle and the phase difference includes: obtaining the cosine value of the phase difference and the first value of the preset first proportional adjustment coefficient product, and the sum of the deceleration of the previous cycle and the first product is taken as the current deceleration;

Specifically, if the bus voltage value in the current cycle is smaller than the bus voltage value in the previous cycle, the acceleration needs to be increased. In the power generation state, the phase difference between the output voltage of the inverter and the output current of the inverter is greater than 90°. In a specific example, the step of determining the current deceleration according to the preset second proportional adjustment coefficient, the deceleration of the previous cycle and the phase difference includes: obtaining the second product of the cosine value of the phase difference and the preset second proportional adjustment coefficient , and take the sum of the deceleration of the previous cycle and the second product as the current deceleration.

In one of the embodiments, it also includes the steps of:

Specifically, in this case, there is no need to perform deceleration power generation, and it is enough to instruct the elevator to maintain the current speed and stop the elevator when it reaches the leveling area. The current state of the elevator can be further judged by the bus voltage.

Specifically, when the current running state of the elevator is the generator state, and/or the bus voltage value has not decreased, the elevator can meet the needs of the current running without the energy storage device for energy supply.

It should be understood that although the various steps in the flow charts in FIGS. 5-8 are shown sequentially as indicated by the arrows, these steps are not necessarily executed sequentially in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least some of the steps in Figures 5-8 may include a plurality of sub-steps or stages, these sub-steps or stages are not necessarily executed at the same time, but may be executed at different times, these sub-steps or stages The order of execution is not necessarily performed sequentially, but may be performed alternately or alternately with at least a part of other steps or sub-steps or stages of other steps.

In one embodiment, as shown in Figure 9, an elevator power failure emergency device is provided, comprising:

For the specific limitations of the elevator power failure emergency device, please refer to the above definition of the elevator power failure emergency method, which will not be repeated here. Each module in the above-mentioned elevator power failure emergency device can be fully or partially realized by software, hardware and combinations thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, and can also be stored in the memory of the computer device in the form of software, so that the processor can invoke and execute the corresponding operations of the above-mentioned modules.

In one embodiment, an elevator is provided with a processor for providing computing and control capabilities. The memory of the elevator includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The network interface of the elevator is used to communicate with external terminals through network connection. When the computer program is executed by the processor, an elevator power failure emergency method is realized.

In one embodiment, an elevator is provided, including a memory and a processor, a computer program is stored in the memory, and the processor implements the following steps when executing the computer program:

In one embodiment, the following steps are also implemented when the processor executes the computer program:

In one embodiment, the processor performing the step of instructing the elevator to decelerate to zero further implements the following steps:

Obtain the initial deceleration and the phase difference of the bus voltage leading the bus current, and obtain the current deceleration according to the initial deceleration, the phase difference of the bus voltage leading the bus current and the bus voltage value;

In one embodiment, when the processor executes the step of determining the current deceleration according to the preset first proportional adjustment coefficient, the deceleration of the previous cycle and the phase difference, the following steps are also implemented:

In one embodiment, when the processor executes the step of determining the current deceleration according to the preset second proportional adjustment coefficient, the deceleration of the previous cycle and the phase difference, the following steps are also implemented:

In one embodiment, when the processor executes the step of generating the response signal according to the current running state of the elevator, the bus voltage value and the power supply request signal, the following steps are also implemented:

In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

In one embodiment, when the computer program is executed by the processor, the following steps are also implemented:

In one embodiment, the step of instructing the elevator to decelerate to zero, when executed by the processor, further implements the following steps:

In one embodiment, when the step of determining the current deceleration according to the preset first proportional adjustment coefficient, the deceleration of the previous cycle and the phase difference is executed by the processor, the following steps are also implemented:

In one embodiment, when the step of determining the current deceleration according to the preset second proportional adjustment coefficient, the deceleration of the previous cycle and the phase difference is executed by the processor, the following steps are also implemented:

In one embodiment, when the step of generating the response signal according to the current running state of the elevator, the bus voltage value and the power supply request signal is executed by the processor, the following steps are also implemented:

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the computer programs can be stored in a non-volatile computer-readable memory In the medium, when the computer program is executed, it may include the processes of the embodiments of the above-mentioned methods. Wherein, any references to memory, storage, database or other media used in the various embodiments provided in the present application may include non-volatile and/or volatile memory. Nonvolatile memory can include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Chain Synchlink DRAM (SLDRAM), memory bus dynamic random access memory (Rambus DRAM, RDRAM for short), and interface dynamic random access memory (DRDRAM), etc.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only represent several implementation modes of the present application, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the scope of the patent for the invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims

An elevator power failure emergency equipment, characterized in that it includes emergency power supply equipment and an elevator controller; the emergency power supply equipment includes a power supply controller, an energy storage device and a switching unit; the power supply controller is respectively connected to the energy storage equipment, said switching unit and said elevator controller;

The power controller is used to instruct the switching unit to connect the energy storage device to the elevator controller and transmit a power supply request signal to the elevator controller when the power grid is in an abnormal operation state;

The elevator controller is used to obtain the bus voltage value and the current running state of the elevator, and generate a response signal according to the current running state of the elevator, the bus voltage value and the power supply request signal;

The power controller is used to instruct the switching unit to conduct the connection between the energy storage device and the electric drive device of the elevator according to the received response signal.
The elevator power failure emergency equipment according to claim 1, wherein the elevator controller includes a main microcomputer controller and a secondary microcomputer controller;

The main microcomputer controller is used to receive the power supply request signal, and transparently transmit the power supply request to the secondary microcomputer controller;

The secondary microcomputer controller is used to obtain the bus voltage value and the current running state of the elevator, and generate the response signal according to the current running state of the elevator, the bus voltage value and the power supply request signal.
The elevator power failure emergency equipment according to claim 1, wherein the emergency power supply equipment also includes power grid monitoring equipment;

The power grid monitoring device is used to transmit the detected grid operation status to the power supply controller.
The elevator power failure emergency equipment according to claim 3, wherein the emergency power supply equipment also includes energy storage detection equipment;

The energy storage detection device is respectively connected to the energy storage device and the elevator controller.
The elevator power failure emergency equipment according to claim 1, wherein the power controller is configured to instruct the switching unit to connect the energy storage device to the brake power supply when the power grid is in an abnormal operation state.
An elevator power failure emergency method, characterized in that it is applied to the elevator power failure emergency equipment according to any one of claims 1 to 5, said method comprising the steps of:

When the power grid is in an abnormal operation state, the power controller instructs the switching unit to conduct the connection between the energy storage device and the elevator controller, and transmits a power supply request signal to the elevator controller;

The elevator controller obtains the bus voltage value and the current running state of the elevator, and generates a response signal according to the current running state of the elevator, the bus voltage value and the power supply request signal;

The power controller instructs the switching unit to conduct the connection between the energy storage device and the electric drive device of the elevator according to the received response signal.
An elevator power failure emergency method is characterized in that it comprises the steps of:

Receiving a power supply request signal; the power supply request signal is sent by the power controller when the power grid is in an abnormal operation state;

Obtain the bus voltage value and the current running state of the elevator, and generate a response signal according to the current running state of the elevator, the bus voltage value and the power supply request signal, so that the power controller controls the switching unit to turn on the energy storage Connection of equipment and electric drive equipment for elevators.
The elevator power failure emergency method according to claim 7, further comprising the steps of:

Obtain the first energy provided by the backup energy source, the second energy generated by the elevator decelerating to the leveling speed, the third energy consumed by the elevator decelerating to the leveling speed, and the fourth energy consumed by the elevator performing the leveling action. energy;

In the case that the sum of the first energy and the second energy is less than the sum of the third energy and the fourth energy, instruct the elevator to decelerate to zero, and when the speed of the elevator is zero In this case, control the elevator to perform leveling action.
The elevator power failure emergency method according to claim 8, wherein the step of instructing the elevator to decelerate to zero comprises:

Obtain the initial deceleration and the phase difference between the inverter output voltage and the inverter output current, and obtain the current deceleration according to the initial deceleration, the phase difference between the inverter output voltage and the inverter output current, and the bus voltage value ;

Instructing the elevator to perform an action of decelerating to zero according to the current deceleration.
The elevator power failure emergency method according to claim 9, wherein the step of instructing the elevator to decelerate to zero further comprises the steps of:

Obtain the bus voltage value of the current cycle, the phase difference between the output voltage of the inverter and the output current of the inverter in the current cycle, the deceleration of the previous cycle and the bus voltage value of the previous cycle;

If the bus voltage value in the current cycle is greater than the bus voltage value in the previous cycle, then determine the current deceleration according to a preset first proportional adjustment coefficient, the deceleration in the previous cycle, and the phase difference;

If the bus voltage value in the current cycle is smaller than the bus voltage value in the previous cycle, then determine the current deceleration according to a preset second proportional adjustment coefficient, the deceleration in the previous cycle, and the phase difference.
The elevator power failure emergency method according to claim 10, wherein the step of determining the current deceleration according to the preset first proportional adjustment coefficient, the deceleration of the last cycle and the phase difference comprises:

Obtain a first product of the cosine value of the phase difference and the preset first proportional adjustment coefficient, and use the sum of the deceleration in the previous cycle and the first product as the current deceleration;

The step of determining the current deceleration according to the preset second proportional adjustment coefficient, the deceleration of the last cycle and the phase difference includes:

Obtaining a second product of the cosine value of the phase difference and the preset second proportional adjustment coefficient, and using the sum of the deceleration in the previous cycle and the second product as the current deceleration.
The elevator power failure emergency method according to claim 8, further comprising the steps of:

When the sum of the first energy and the second energy is greater than the sum of the third energy and the fourth energy, instruct the elevator to decelerate to the leveling speed, and When the speed is the leveling speed, the elevator is controlled to perform the leveling action at the leveling speed.
The elevator power failure emergency method according to claim 7, wherein the step of generating a response signal according to the current running state of the elevator, the bus voltage value and the power supply request signal comprises:

The response signal is generated when the current running state of the elevator is the motor state, the bus voltage value continues to decrease within a preset time and the power supply request signal is received.
An elevator power failure emergency device is characterized in that it comprises:

The receiving module is configured to receive a power supply request signal; the power supply request signal is sent by the power supply controller when the power grid is in an abnormal operation state;

The control module is used to obtain the bus voltage value and the current running state of the elevator, and generate a response signal according to the current running state of the elevator, the bus voltage value and the power supply request signal, so that the power controller controls switching The unit conducts the connection of the energy storage device and the electric drive device of the elevator.
An elevator, comprising a memory and a processor, the memory stores a computer program, wherein the processor implements the steps of the method according to any one of claims 7 to 13 when executing the computer program.
A computer-readable storage medium on which a computer program is stored, wherein the computer program implements the steps of the method according to any one of claims 7 to 13 when the computer program is executed by a processor.