CN110526057B - Elevator car position confirmation system, method and device - Google Patents
Elevator car position confirmation system, method and device Download PDFInfo
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- CN110526057B CN110526057B CN201910768822.7A CN201910768822A CN110526057B CN 110526057 B CN110526057 B CN 110526057B CN 201910768822 A CN201910768822 A CN 201910768822A CN 110526057 B CN110526057 B CN 110526057B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B3/00—Applications of devices for indicating or signalling operating conditions of elevators
- B66B3/02—Position or depth indicators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
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Abstract
The application relates to a system, a method and a device for confirming the position of an elevator car, wherein the system for confirming the position of the elevator car comprises a controller, a rotary encoder, a power failure emergency device and a leveling sensor; when the elevator loses power, the power failure emergency device counts the times of leveling signals transmitted by the leveling sensor when the power grid power supply is in a power supply stop state. The initial position of the elevator car can be obtained through the rotary encoder, and the second position of the elevator car can be obtained according to the times and the initial position of the leveling signal. The controller obtains the operation data and the initial position of the elevator when the elevator car enters a power-off state, processes the operation data of the initial position, and can obtain the first position of the elevator car. The elevator car position that will obtain through two kinds of modes is compared, is promptly through comparing first position and second position to can acquire more accurate elevator car's position, be favorable to improving the elevator speed of the flat bed of saving oneself when the repowering and the security of elevator.
Description
Technical Field
The application relates to the technical field of elevators, in particular to an elevator car position confirmation system, method and device.
Background
With the rapid development of science and technology, elevators are more and more popular, and great convenience is brought to the life and work of people. During elevator operation, a situation may occur in which the elevator loses power. When the elevator loses electricity, the elevator can promptly stop and the car takes place to skid, resumes electric power back again, and the work of giving first priority is to carry out car position and confirms, and later just can correctly control the elevator and to save oneself the operation in nearest flat layer region, just can resume the elevator.
In the implementation process, the inventor finds that at least the following problems exist in the conventional technology: the existing car position confirming means has the problem of low accuracy.
Disclosure of Invention
In view of the above, it is desirable to provide an elevator car position confirmation system, method, and device that can improve car position accuracy.
In order to achieve the above object, in one aspect, an embodiment of the present invention provides an elevator car position confirmation system, including a controller, a rotary encoder, a power failure emergency device, and a leveling sensor; the controller is respectively connected with the rotary encoder, the power failure emergency device and the leveling sensor; the power failure emergency device is connected with the leveling sensor and is used for being connected with a power supply of a power grid;
the method comprises the steps that a controller obtains an initial position and operation data of an elevator car when a power grid power supply enters a power supply stop state at present, and processes the initial position and the operation data to obtain a first position of the elevator car; the initial position is obtained by the controller according to pulse data transmitted by the rotary encoder;
the power failure emergency device counts the times of transmitting the leveling signal by the leveling sensor when the power supply of the power grid is in a power supply stop state, and transmits the times to the controller; the controller obtains a second position of the elevator car according to the initial position, the operation data and the times;
the controller determines the first position or the second position as the current position of the elevator car.
In one embodiment, the operational data includes vector speed, load and resistance parameters of the elevator car;
the controller processes the vector speed, the load and the resistance parameter by adopting a speed distance model to obtain the sliding distance of the elevator car, and obtains the first position of the elevator car based on the sliding distance and the initial position.
In one embodiment, the controller determines whether the first position and the second position are consistent;
if the judgment result is yes, the controller determines the first position as the current position of the elevator car;
and if the judgment result is negative, the controller determines the second position as the current position of the elevator car.
In one embodiment, if the judgment result is yes, the controller confirms a first target position according to the first position and instructs the elevator car to level to the first target position;
and if the judgment result is negative, the controller confirms the second target position according to the second position and instructs the elevator car to level to the second target position.
In one embodiment, if the judgment result is yes, the controller instructs the elevator car to level to a first target position at a first preset speed;
if the judgment result is negative, the controller indicates the elevator car to level to a second target position at a second preset speed; the first preset speed is greater than the second preset speed.
In one embodiment, the power outage emergency device comprises a counter and a communication device;
the communication equipment is respectively connected with the counter and the controller; the counter is connected with the flat sensor.
In one embodiment, the emergency power supply is further included, and the emergency power supply is connected with the leveling sensor and the power failure emergency device.
The embodiment of the invention also provides a method for confirming the position of the elevator car, which comprises the following steps:
acquiring initial position and operation data of an elevator car when a power grid power supply enters a power supply stop state at present; the initial position is obtained according to pulse data transmitted by a rotary encoder;
processing the initial position and the operation data to obtain a first position of the elevator car;
receiving the times of the leveling signal transmitted by the leveling sensor when the power grid power supply is in a power supply stopping state, and obtaining a second position of the elevator car according to the initial position and the times; wherein the times are obtained by counting the power failure emergency devices;
the first position or the second position is used to determine the current position of the elevator car.
The embodiment of the invention also provides an elevator car position confirmation device, which comprises:
the operation data acquisition module is used for acquiring the initial position and operation data of the elevator car when the power grid power supply enters a power supply stop state at present; the initial position is obtained according to pulse data transmitted by a rotary encoder;
the operation data processing module is used for processing the initial position and the operation data to obtain a first position of the elevator car;
the leveling data receiving module is used for receiving the times of leveling signal transmission of the leveling sensor when the power grid power supply is in a power supply stop state; wherein, the times are obtained by counting the power failure emergency devices;
the leveling data processing module is used for obtaining a second position of the elevator car according to the initial position and the times;
a position confirmation module for determining the first position or the second position as the current position of the elevator car.
Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the steps of the above-mentioned method.
One of the above technical solutions has the following advantages and beneficial effects:
the application provides an elevator car position confirmation system, including controller, rotary encoder, power failure emergency device and flat bed inductor. When the elevator loses power, the power failure emergency device counts the times of leveling signals transmitted by the leveling sensor when the power grid power supply is in a power supply stop state. The initial position of the elevator car can be obtained through the rotary encoder, and the second position of the elevator car can be obtained according to the times and the initial position of the leveling signal. The controller obtains the operation data and the initial position of the elevator when the elevator car enters a power-off state, processes the operation data of the initial position, and can obtain the first position of the elevator car. The elevator car position that will obtain through two kinds of modes is compared, is promptly through comparing first position and second position to can acquire more accurate elevator car's position, be favorable to improving the elevator speed of the flat bed of saving oneself when the repowering and the security of elevator.
Drawings
The foregoing and other objects, features and advantages of the application will be apparent from the following more particular description of preferred embodiments of the application, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the subject matter of the present application.
Fig. 1 is a first schematic block diagram of an elevator car position confirmation system in one embodiment;
fig. 2 is a second schematic block diagram of an elevator car position confirmation system in one embodiment;
fig. 3 is a third schematic block diagram of an elevator car position confirmation system in one embodiment;
fig. 4 is a schematic flow diagram of a method of elevator car position confirmation in one embodiment;
fig. 5 is a block diagram showing the structure of an elevator car position confirmation apparatus according to an embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "processing," "flat-layer signal," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The most basic method of confirming the position of the elevator car is realized by calculating the pulse of a rotary encoder on a traction sheave of a main machine. When the elevator suddenly breaks down and stops in high-speed operation, because of inertia, a car steel wire rope can skid for a certain distance on a traction sheave of a main machine, namely the car can skid for a certain distance in a well and then can stop, the pulse of a rotary encoder of the traction sheave can not correctly reflect the actual position of the car at the moment, therefore, when the control system is electrified again, the first work is car position confirmation, and then the elevator can be correctly controlled to operate by self rescue in the nearest flat layer area, and the elevator can be recovered.
In the industry today, there are basically three ways of location confirmation for the above situations:
(1) the car position is estimated by converting the maximum slip distance. The estimation method in the industry calculates the maximum sliding distance of the elevator directly according to the rated speed, the rated load and the maximum inertia of the whole system of the elevator, so as to estimate the approximate position of the elevator car. This method estimates the car position with the maximum amount of slip. When the elevator is in power failure and is in sudden stop, the elevator is not fully loaded and reaches the rated speed every time, so the estimation cannot truly reflect the actual slip amount of the elevator. When the deviation of the estimation result and the actual car position is large, the elevator has a wrong floor. In order to ensure that the floor staggering can not happen, a threshold value is often set for the slip deviation in the industry technology, when the estimated result and the actual deviation exceed the threshold value, the elevator gives up the nearby flat floor, and self-rescue operation is carried out to the limiting position of the bottommost layer or the topmost layer in a low-speed mode to find the absolute position. The maximum distance estimation method is not accurate enough and has great limitation.
(2) Position confirmation is achieved by adding an absolute value encoder. The absolute value encoder is arranged on the elevator speed limiter and records the pulse data of the steel wire rope of the elevator car. Therefore, when the steel wire rope of the elevator car slips on the traction sheave of the main machine, the absolute value encoder can still record the sliding distance of the steel wire rope of the elevator car, and the data at the moment reflects the real-time absolute position of the elevator car. According to the data of the absolute value encoder, the control system can accurately control the elevator to be in the near leveling. The method is difficult to popularize due to expensive equipment and high cost.
(3) A magnetic grating ruler (or equipment with two-dimensional code position information) is added in a hoistway, and a card reader is installed on the top of the car. When the car skids, the car top card reader can learn the position of the current car by reading the data of the magnetic grid ruler or the position information of the two-dimensional code corresponding to the current car in the well, so that the elevator is accurately controlled to be in the near flat bed. The magnetic grid ruler and the card reader of the method have high cost and are difficult to popularize.
The elevator car position confirmation system can effectively solve the problems brought by the traditional technology.
In one embodiment, as shown in fig. 1, there is provided an elevator car position confirmation system including a controller 10, a rotary encoder 20, a power outage emergency device 30, and a landing sensor 40; the controller 10 is respectively connected with the rotary encoder 20, the power failure emergency device 30 and the floor sensor 40; the power failure emergency device 30 is connected with the leveling sensor 40 and is used for connecting a power grid power supply;
the controller 10 acquires an initial position and operation data of the elevator car when the power grid power supply currently enters a power supply stopping state, and processes the initial position and the operation data to obtain a first position of the elevator car; wherein, the initial position is obtained by the controller according to the pulse data transmitted by the rotary encoder 20;
the power failure emergency device 30 counts the times of transmitting the leveling signal by the leveling sensor 40 when the power grid power supply is in the power supply stop state, and transmits the times to the controller 10; the controller 10 obtains a second position of the elevator car according to the initial position and the times;
the controller 10 determines the first position or the second position as the current position of the elevator car.
The initial position of the elevator car is the position of the elevator car when the power grid power supply enters a power supply stop state at present, and in the application, the initial position of the elevator car can be obtained through pulse data transmitted by a rotary encoder; the flat layer signal is generated when the flat layer sensor passes through the magnetic isolation plate in the flat layer area. In the elevator shaft, a corresponding magnetism isolating plate is arranged in a flat layer area of each stop (floor). The number of times the leveling sensor generates a leveling signal may represent the number of times the elevator travels past a stop (floor). The power failure emergency device is control equipment with a counting function, which can still independently run when power supply of an external power grid is lost. The power failure emergency device can comprise a processor and a built-in power supply, can also comprise a counter and a built-in power supply, and can also comprise a counter which is powered by other lines. The rotary encoder is a device for recording the pulse data of the traction sheave in real time.
During normal operation of the elevator, real-time position information of the elevator car is obtained from the pulse data of the rotary encoder. In one specific example, assuming one floor for every 1000 pulses of data, when the controller acquires 5000 pulses of data, it represents that the real-time position of the elevator car is at 5 floors. When the controller acquires pulse data 5500, it represents that the actual position of the elevator car is between floors 5 and 6.
The controller obtains the initial position of the elevator car when the power supply of the power grid currently enters a power supply stopping state according to the pulse data transmitted by the rotary encoder. The controller may obtain the operation data of the grid power source when the grid power source enters the power supply stop state by any technical means in the field. In one specific example, the operation data may be stored in real time and retrieved by directly reading from the memory when the operation data is needed. The first position of the elevator car can be obtained by processing the operation data and the initial position by any technical means in the field, and is not limited in this respect. In one specific example, the calculation of the slip distance and thus the first position of the elevator car can be carried out by taking the vector speed, load and resistance parameters of the elevator. In another specific example, the slip distance can be calculated by taking the vector speed of the elevator and the nominal load, and thus the first position of the elevator car.
The power failure emergency device can be connected with the flat bed sensor in any mode, optionally, the power failure emergency device can be electrically connected with the flat bed sensor through a wire, and the power failure emergency device can also be in communication connection with the flat bed sensor, and is not specifically limited herein. The power failure emergency device may be disposed on the elevator car or in the far end, and is not particularly limited herein. Specifically, the power failure emergency device counts the number of times that the power grid power supply is in a power supply stop state device and the leveling sensor transmits, and obtains the second position of the elevator car according to the number of times that the leveling sensor transmits and the running direction of the elevator car.
After the controller obtains the first position and the second position, the controller determines the first position or the second position as the current position of the elevator car.
The application provides an elevator car position confirmation system, including controller, rotary encoder, power failure emergency device and flat bed inductor. When the elevator loses power, the power failure emergency device counts the times of leveling signals transmitted by the leveling sensor when the power grid power supply is in a power supply stop state. The initial position of the elevator car can be obtained through the rotary encoder, and the second position of the elevator car can be obtained according to the times and the initial position of the leveling signal. The controller obtains the operation data and the initial position of the elevator when the elevator car enters a power-off state, processes the operation data of the initial position, and can obtain the first position of the elevator car. The elevator car position that will obtain through two kinds of modes is compared, is through comparing primary importance and second position promptly to can acquire more accurate elevator car's position, thereby be more for accurate and quick control elevator near the flat bed, improve the operating efficiency, improve whole elevator system fail safe nature. The self-rescue leveling speed of the elevator in the power restoration process and the safety of the elevator are improved.
In one embodiment, the operational data includes vector speed, load and resistance parameters of the elevator car;
the controller processes the vector speed, the load and the resistance parameter by adopting a speed distance model to obtain the sliding distance of the elevator car, and obtains the first position of the elevator car based on the sliding distance and the initial position.
Wherein, the resistance parameter is the friction factor that the elevator car receives in the operation of losing the electricity.
Specifically, the controller can use any speed distance model in the art to process the vector speed, load and resistance parameters to obtain the slip distance of the elevator car. From the slip distance and the initial position, the first position of the elevator car can be obtained. In one specific example, the first position is the sum or difference of the initial position and the slip distance. By adopting the speed distance model and integrating the vector speed, the load and the resistance parameter, the slipping distance of the elevator car can be obtained, and compared with the method of directly estimating the maximum slipping distance according to the maximum speed, the rated load and the like, the method has the advantages that the obtained result is higher in accuracy and lower in deviation rate.
In one embodiment, the controller determines whether the first position and the second position are consistent; if the judgment result is yes, the controller determines the first position as the current position of the elevator car; and if the judgment result is negative, the controller determines the second position as the current position of the elevator car.
Specifically, the controller judges a first position and a second position, and when the first position and the second position are consistent, the first position is determined as the current position of the elevator car, and if the first position and the second position are not consistent, the second position is determined as the current position of the elevator car. As the elevator installation is operated over time, its resistance parameter may change, resulting in a deviation of the first position from the actual position, while the second position is the floor or between which two floors the elevator is able to reflect accurately. Thus, when the first position and the second position do not coincide, the second position is determined as the current position of the elevator car. By this way, the accuracy of the position of the elevator car can be guaranteed.
In one embodiment, if the judgment result is yes, the controller confirms a first target position according to the first position and instructs the elevator car to level to the first target position;
and if the judgment result is negative, the controller confirms the second target position according to the second position and instructs the elevator car to level to the second target position.
Wherein the first target position is a leveling position obtained from the first position, and the second target position is a leveling position obtained from the second position.
Specifically, the first destination location may be confirmed according to the first location, and optionally, a next floor closest to the first location may be used as the first destination location, or a floor closest to the first location may be used as the first destination location, which is not specifically limited herein. The controller identifies a second target location based on the second location. Alternatively, the next floor closest to the second position may be set as the second destination position, and the last floor closest to the second position may also be set as the second destination position. In a specific example, when the first position and the second position are coincident, the elevator car position is expressed as 5400 using pulse data, and at this time, if the elevator is restored to power according to the principle of going down to near the leveling floor, the leveling operation is performed to 5 floors. In this way, the elevator car position confirmation system provided by the application can be used for leveling floors more quickly.
In one embodiment, if the judgment result is yes, the controller instructs the elevator car to level to a first target position at a first preset speed;
if the judgment result is negative, the controller indicates the elevator car to level to a second target position at a second preset speed; the first preset speed is greater than the second preset speed.
Wherein, the first preset speed and the second preset speed are both the speeds set in the elevator.
Specifically, the first preset speed is greater than the second preset speed, and the first preset speed may be a normal operation speed of the elevator. Through setting up the different settings of elevator flat bed speed, can further improve flat bed speed under the prerequisite of guaranteeing elevator operation safety.
In one embodiment, as shown in fig. 2, the power outage emergency apparatus 30 includes a counter 301 and a communication device 303;
the communication device 303 is respectively connected with the counter 301 and the controller 10; the counter 301 is connected to the flat bed sensor 40.
Specifically, the power outage emergency device includes a counter 301 and a communication device 303. The counter is used for carrying out technology on the times of the leveling signals, and the communication equipment is used for sending the times of the leveling signals to the controller. Alternatively, the counter and the communication device in the power failure emergency device can be powered by an internal power supply, and can also be externally connected with power supplies of other lines.
In one embodiment, as shown in fig. 3, a backup power source 50 is further included, and the backup power source 50 is connected to the leveling sensor 40 and the power failure emergency device 30.
Specifically, the power outage emergency device is powered by a backup power source, which in one specific example may be a battery. The storage battery is not necessary to be a large-capacity battery, so that the operation of the power failure emergency device and the leveling sensor can be maintained, and the times of accurately acquiring leveling signals by the power failure emergency device when the elevator is in power failure, namely the number of the cars sliding through the stop stations, can be ensured.
In order to further explain the technical solution of the present application, it is specifically described with reference to an actual scenario:
when the elevator is in normal operation, the real-time position information of the elevator car is fed back through pulse data on the rotary encoder. The controller can obtain the position information and the current speed of the elevator by acquiring the data on the rotary encoder. And in the normal running process of the elevator, the controller records and stores the current pulse data and the running data in real time.
When the grid power supply currently enters a power supply stopping state, for example, when the elevator moves upwards at a high speed to just pass through the leveling position of the 5 th floor (namely, the 5 th magnetic-isolating plate), the elevator suddenly loses power, the traction sheave is quickly stopped due to the power loss of the brake, the traction sheave does not rotate any more, and the position recorded by the rotary encoder is the position (assumed to be 5100) at the stopping moment of the traction sheave of the main machine. But because of inertia the car wire will not stop after sliding some distance over the traction sheave, the rotary encoder data 5100 is not the actual position of the car. When the power failure emergency device detects that the power grid power supply stops supplying power, the backup power supply supplies power for the power failure emergency device and the flat bed inductor, and two kinds of equipment, namely the flat bed inductor and the power failure backup device, are guaranteed to continuously work. When the car takes place to skid and when sliding through the magnetic shield because of inertia in the well, can be sensed by the leveling inductor to can be taken notes by the emergency device that has a power failure. For example, after losing power, the car has slided two leveling areas in the well, and then leveling sensor can sense the change of two leveling signals, and the power failure emergency device will record as 2 this moment.
When the power supply of the power grid is recovered to be normal and power supply is started, after the controller recovers the power again, the initial position and the operation data of the elevator when power loss occurs are firstly obtained, and the slip distance of the elevator under the working condition is calculated on the basis of the initial position and the operation data, for example, the conversion result is 2500 pulses. The slip distance is then superimposed on the traction sheave pulse position data 5100 recorded by the control system in the event of power loss, and finally the first position of the car is 7600. Assume that there is one floor per 1000 pulses (i.e., 7000 generations 7600, representing a car located between floors 7 and 8.
The controller reads the information of the magnetic isolation plate (namely the number of times of transmitting the leveling signal) passing by when the car slips in the power-off state. For example, the read information is 2, the position when the power failure occurs in the upward movement of the car is at the 5 th floor (the 5 th magnetism-isolating plate), and the car passes through the two magnetism-isolating plates after power failure and slipping, so that the car can be judged to pass through the 7 th magnetism-isolating plate, the second position for stopping after slipping is located at the 7 th floor leveling position of the 7 th table, and 8000 represents the 8 th floor leveling position), and then the dynamically estimated data magnetism-isolating plate is located between the 8 th magnetism-isolating plate and the 7 th floor leveling plate.
And if the first position is consistent with the second position, the controller controls the elevator to carry out near leveling in a first preset speed mode by taking the first position as a starting point.
And if the first position is inconsistent with the second position, the controller controls the elevator to carry out near leveling at a second preset speed by taking the second position as a starting point. If the controller converts the number of slipping pulses into 1500 according to the initial position and the operation data of the elevator in the power failure, and after 5100 of the pulse data of the traction wheel is superposed, the position of the elevator car is 6600. If the power failure backup device records that the signal of the magnetic shield plate which the car slides through is still 2 after the control system loses power, the representative position of the elevator is positioned between the 7 th magnetic shield plate and the 8 th magnetic shield plate (between the seventh floor and the eighth floor). At this time, the elevator is controlled to perform near leveling at a second preset speed.
In one embodiment, as shown in fig. 4, there is provided an elevator car position confirmation method including:
s410, acquiring the initial position and the operation data of the elevator car when the power grid power supply enters a power supply stopping state at present; the initial position is obtained according to pulse data transmitted by a rotary encoder;
the operation data of the power supply of the power grid when the power supply of the power grid currently enters a power supply stop state can be acquired by any technical means in the field. In one specific example, the operation data may be stored in real time and retrieved by directly reading from the memory when the operation data is needed.
S420, processing the initial position and the operation data to obtain a first position of the elevator car;
the first position of the elevator car can be obtained by processing the operation data and the initial position by any technical means in the field, and is not limited in this respect. In one specific example, the calculation of the slip distance and thus the first position of the elevator car can be carried out by taking the vector speed, load and resistance parameters of the elevator.
S430, receiving the times of the leveling signal transmitted by the leveling sensor when the power grid power supply is in a power supply stopping state, and obtaining a second position of the elevator car according to the initial position and the times; wherein the times are obtained by counting the power failure emergency devices;
and S440, determining the current position of the elevator car according to the first position or the second position.
It should be understood that, although the steps in the flowchart of fig. 4 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in fig. 4 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
In one embodiment, as shown in fig. 5, there is provided an elevator car position confirmation apparatus including: the system comprises an operation data acquisition module, an operation data processing module, a flat data receiving module, a flat data processing module and a position confirmation module, wherein:
the operation data acquisition module 510 is configured to acquire an initial position and operation data of the elevator car when the grid power supply currently enters a power supply stop state; the initial position is obtained according to pulse data transmitted by a rotary encoder;
the operation data processing module 520 is used for processing the initial position and the operation data to obtain a first position of the elevator car;
a leveling data receiving module 530, configured to receive the number of times that the leveling sensor transmits a leveling signal when the power grid power supply is in a power supply stop state; wherein, the times are obtained by counting the power failure emergency devices;
the leveling data processing module 540 is used for obtaining a second position of the elevator car according to the initial position and the times;
a position confirmation module 550 for determining the first position or the second position as the current position of the elevator car.
For the specific definition of the elevator car position confirmation device, reference may be made to the above definition of the elevator car position confirmation method, which is not described herein again. Each module in the above elevator car position confirmation apparatus may be implemented in whole or in part by software, hardware, and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:
acquiring initial position and operation data of an elevator car when a power grid power supply enters a power supply stop state at present; the initial position is obtained according to pulse data transmitted by a rotary encoder;
processing the initial position and the operation data to obtain a first position of the elevator car;
receiving the times of the leveling signal transmitted by the leveling sensor when the power grid power supply is in a power supply stopping state, and obtaining a second position of the elevator car according to the initial position and the times; wherein the times are obtained by counting the power failure emergency devices;
the first position or the second position is used to determine the current position of the elevator car.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile 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 a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An elevator car position confirmation system is characterized by comprising a controller, a rotary encoder, a power failure emergency device and a leveling sensor; the controller is respectively connected with the rotary encoder, the power failure emergency device and the leveling sensor; the power failure emergency device is connected with the leveling sensor and is used for being connected with a power supply of a power grid;
the controller acquires an initial position and operation data of the elevator car when the power grid power supply enters a power supply stop state at present, and processes the initial position and the operation data to obtain a first position of the elevator car; the initial position is obtained by the controller according to pulse data transmitted by the rotary encoder;
the power failure emergency device counts the times of transmitting leveling signals by the leveling sensor when the power grid power supply is in a power supply stop state, and transmits the times to the controller; the controller obtains a second position of the elevator car according to the initial position, the operation data and the times;
the controller determines the first position or the second position as a current position of the elevator car.
2. The elevator car position confirmation system of claim 1, wherein the operational data includes vector speed, load, and resistance parameters of the elevator car;
the controller processes the vector speed, the load and the resistance parameter by adopting a speed distance model to obtain a slip distance of the elevator car, and obtains a first position of the elevator car based on the slip distance and the initial position.
3. The elevator car position confirmation system according to claim 1,
the controller judges whether the first position and the second position are consistent;
if the judgment result is yes, the controller determines the first position as the current position of the elevator car;
and if the judgment result is negative, the controller determines the second position as the current position of the elevator car.
4. The elevator car position confirmation system according to claim 3,
if the judgment result is yes, the controller confirms a first target position according to the first position and indicates the elevator car to level to the first target position;
and if the judgment result is negative, the controller confirms a second target position according to the second position and indicates the elevator car to level to the second target position.
5. The elevator car position confirmation system according to claim 4,
if the judgment result is yes, the controller indicates the elevator car to level to the first target position at a first preset speed;
if the judgment result is negative, the controller indicates the elevator car to level to the second target position at a second preset speed; the first preset speed is greater than the second preset speed.
6. The elevator car position confirmation system according to claim 1, wherein the power outage emergency device includes a counter and a communication device;
the communication equipment is respectively connected with the counter and the controller; the counter is connected with the flat layer inductor.
7. The elevator car position confirmation system of claim 1, further comprising a backup power source connecting the leveling sensor and the power outage emergency device.
8. An elevator car position confirmation method, comprising the steps of:
acquiring initial position and operation data of the elevator car when the power grid power supply enters a power supply stopping state at present; the initial position is obtained according to pulse data transmitted by a rotary encoder;
processing the initial position and the operation data to obtain a first position of the elevator car;
receiving the times of the leveling signals transmitted by the leveling sensor when the power grid power supply is in a power supply stopping state, and obtaining a second position of the elevator car according to the initial position, the operation data and the times; the times are obtained by counting the power failure emergency devices;
determining the first position or the second position as a current position of the elevator car.
9. An elevator car position confirmation device, comprising:
the operation data acquisition module is used for acquiring the initial position and operation data of the elevator car when the power grid power supply enters a power supply stop state at present; the initial position is obtained according to pulse data transmitted by a rotary encoder;
the operation data processing module is used for processing the initial position and the operation data to obtain a first position of the elevator car;
the leveling data receiving module is used for receiving the times of leveling signal transmission of the leveling sensor when the power grid power supply is in a power supply stop state; wherein the times are obtained by counting the power failure emergency devices;
the leveling data processing module is used for obtaining a second position of the elevator car according to the initial position, the operation data and the times;
a position confirmation module to determine a current position of the elevator car from the first position or the second position.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method as claimed in claim 8.
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| CN112279031B (en) * | 2020-10-28 | 2022-04-26 | 广州广日电梯工业有限公司 | Calibration method and calibration device for elevator |
| CN112340559A (en) * | 2020-11-23 | 2021-02-09 | 武汉市威斯德智能装备有限公司 | Elevator power failure emergency rescue blind floor identification system |
| CN113415699B (en) * | 2021-06-29 | 2023-01-24 | 日立楼宇技术（广州）有限公司 | Method and device for replacing car battery |
| CN115303902A (en) * | 2022-07-28 | 2022-11-08 | 日立电梯（中国）有限公司 | Elevator direction judgment device and judgment method after accidental power failure |
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| KR920008388B1 (en) * | 1990-08-31 | 1992-09-28 | 금성산전 주식회사 | Device detecting of conveying length of slip of elevator in breaking ac |
| MY126287A (en) * | 1994-11-17 | 2006-09-29 | Lg Otis Elevator Co | Position detecting apparatus for elevator |
| CN201062178Y (en) * | 2007-05-21 | 2008-05-21 | 广州日立电梯有限公司 | Elevator car position confirming device |
| JP5210260B2 (en) * | 2009-07-27 | 2013-06-12 | 株式会社日立製作所 | Elevator control device |
| US8863908B2 (en) * | 2010-09-09 | 2014-10-21 | Inventio Ag | Controlling a drive motor of an elevator installation |
| CN102009890B (en) * | 2010-12-08 | 2012-12-05 | 日立电梯（中国）有限公司 | Detector for absolute position of elevator lift car |
| JP5623264B2 (en) * | 2010-12-14 | 2014-11-12 | 株式会社日立製作所 | Elevator car position detection device |
| CN105084141A (en) * | 2015-09-18 | 2015-11-25 | 广州日滨科技发展有限公司 | Control method capable of achieving direct stopping of elevator |
| JP6542729B2 (en) * | 2016-09-12 | 2019-07-10 | 株式会社日立ビルシステム | Elevator car position confirmation system |
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