CN117775908A - Elevator leveling control method, device, system and computer equipment - Google Patents

Abstract

The application relates to an elevator leveling control method, an elevator leveling control device, an elevator leveling control system and computer equipment. The method comprises the following steps: acquiring the actual distance and the expected distance of the elevator from the triggering of the first flat layer switch of the elevator to the triggering of the second flat layer switch of the elevator, and obtaining the correction coefficient of the elevator; acquiring an expected residual distance from triggering a second leveling switch to a target leveling; and obtaining a correction distance based on the correction coefficient and the expected remaining distance, and controlling the elevator to run to the target leveling from triggering the second leveling switch based on the correction distance. The method solves the problem of inaccurate elevator stopping caused by slipping.

Description

Elevator leveling control method, device, system and computer equipment

Technical Field

The present disclosure relates to the field of elevator control technologies, and in particular, to a method, an apparatus, a system, and a computer device for controlling an elevator leveling.

Background

The elevator leveling layer is a basic function of an elevator, namely the elevator is corrected to a state with the height being consistent from the state that the height of the ground of the elevator car is inconsistent with that of the floor, so that potential safety hazards caused by uneven elevator layers when passengers enter and exit the elevator car are avoided. In the related art, after an elevator starts a leveling function, the elevator generally operates at a set speed by adopting a single leveling floor, and in operation, after a leveling signal is identified, the elevator performs deceleration according to a set related deceleration parameter. The control scheme of the elevator is simple, but with the use of the elevator, the elevator steel belt, the steel wire rope or the traction sheave are continuously worn, and the situation that the car slips can occur under various loading factors is superposed, so that the situation of inaccurate leveling precision after the leveling is caused, and the set parameters are required to be continuously debugged, so that the use experience of a user is poor.

At present, an effective solution is not proposed for solving the problem of poor precision of an elevator leveling floor caused by car slipping in the prior art.

Disclosure of Invention

Based on the above, it is necessary to provide an elevator leveling control method, apparatus, system and computer device for solving the above technical problems.

In a first aspect, the present application provides an elevator landing control method. The method comprises the following steps:

acquiring the actual distance and the expected distance of the elevator from the triggering of the first flat layer switch of the elevator to the triggering of the second flat layer switch of the elevator, and obtaining the correction coefficient of the elevator;

acquiring an expected residual distance from triggering a second leveling switch to a target leveling;

and obtaining a correction distance based on the correction coefficient and the expected remaining distance, and controlling the elevator to run to the target leveling from triggering the second leveling switch based on the correction distance.

In one of the embodiments, before obtaining the actual distance traveled by the elevator from triggering the first floor switch of the elevator to triggering the second floor switch of the elevator and the desired distance, the method further comprises:

determining a target leveling layer, and controlling an elevator to move towards the target leveling layer at a preset speed;

when the elevator is detected to run to a preset deceleration position corresponding to the target leveling, controlling the elevator to run to the first leveling switch at a second speed to be triggered; wherein the preset speed is greater than the second speed.

In one embodiment, determining a target floor and controlling the elevator to move at a preset speed toward the target floor comprises:

controlling the elevator to move towards the nearby flat layer at a preset first speed under the condition that the target flat layer is the nearby flat layer; wherein the nearest flat layer is the nearest layer to the elevator;

when the target leveling layer is an end station leveling layer, controlling the elevator to move towards the end station leveling layer at a preset third speed; wherein the third speed is greater than the first speed; the end station level is the highest level or the lowest level.

In one embodiment, upon detecting that the elevator is traveling to a preset deceleration position corresponding to a target landing, controlling the elevator to travel at a second speed to a first landing switch is triggered, comprising:

when the distance between the elevator and the nearby leveling layer is detected to be smaller than a preset deceleration distance under the condition that the target leveling layer is the nearby leveling layer, switching the running speed of the elevator from a first speed to a second speed, and controlling the elevator to run to a first leveling layer switch at the second speed to be triggered;

when the target leveling layer is an end station leveling layer and the elevator is detected to run to a preset deceleration position which is a preset deceleration distance away from the end station leveling layer, the running speed of the elevator is switched from a third speed to a second speed, and the elevator is controlled to run to the first leveling layer at the second speed to be triggered.

In one embodiment, the method further comprises:

the desired remaining distance is obtained based on the desired distance and the flat bed insert plate length.

In one embodiment, obtaining correction coefficients for an elevator includes:

comparing the expected distance with the actual distance to obtain a correction coefficient; wherein the comparison process includes calculating a quotient of the actual distance and the desired distance.

In one embodiment, the method further comprises:

when a self-learning instruction for the elevator is acquired, the elevator is controlled to acquire a desired remaining distance and a desired distance at a preset self-learning speed based on the self-learning instruction.

In a second aspect, the present application also provides an elevator landing control device. The device comprises:

the calculation module is used for obtaining the actual distance and the expected distance of the elevator from the triggering of the first flat layer switch to the triggering of the second flat layer switch, and obtaining the correction coefficient of the elevator; acquiring an expected residual distance from triggering a second leveling switch to a target leveling; obtaining a correction distance based on the correction coefficient and the expected remaining distance;

and the correction module is used for controlling the elevator to run to the target leveling layer from triggering the second leveling layer switch based on the correction distance.

In a third aspect, the present application also provides an elevator landing control system comprising an elevator car and an elevator landing control as described above;

an elevator landing control device controls an elevator car to realize the elevator landing control method as described above to control the elevator car to run to a target landing.

In a fourth aspect, the present application also provides a computer device. The computer device comprises a memory storing a computer program and a processor which when executing the computer program performs the steps of:

acquiring the actual distance and the expected distance of the elevator from the triggering of the first flat layer switch of the elevator to the triggering of the second flat layer switch of the elevator, and obtaining the correction coefficient of the elevator;

acquiring an expected residual distance from triggering a second leveling switch to a target leveling;

and obtaining a correction distance based on the correction coefficient and the expected remaining distance, and controlling the elevator to run to the target leveling from triggering the second leveling switch based on the correction distance.

According to the elevator leveling control method, device, system and computer equipment, the actual distance and the expected distance of the elevator from the triggering of the first leveling switch to the triggering of the second leveling switch are obtained, so that the correction coefficient of the elevator is obtained, the expected remaining distance of the elevator from the triggering of the second leveling switch to the target leveling is obtained, the correction coefficient and the expected remaining distance are integrated finally, the elevator is controlled to operate to the target leveling based on the correction distance, the slippage caused by abrasion of the steel belt steel wire rope and the traction wheel and various working conditions such as slippage of the elevator under various loading conditions are achieved, the high-precision leveling is achieved by adopting position control, the problem of inaccurate elevator stopping caused by slippage is solved, and additional debugging of leveling parameter is not needed.

Drawings

Fig. 1 is a flow chart of a method of elevator floor control in one embodiment;

FIG. 2 is a schematic diagram of an arrangement of flat layer switches in one embodiment;

fig. 3 is a schematic diagram of the change in elevator operating speed in one embodiment in the vicinity of a leveling floor;

fig. 4 is a schematic diagram of elevator operating speed when an end station is level back in one embodiment;

fig. 5a is a schematic diagram of floor control during elevator self-learning in one embodiment;

fig. 5b is a schematic diagram of the floor control of an elevator in one embodiment when actually running;

fig. 6 is a block diagram of an elevator floor control in one embodiment;

fig. 7 is an internal structural diagram of a computer device in one embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

In one embodiment, as shown in fig. 1, there is provided an elevator landing control method including the steps of:

step S110, obtaining the actual distance and the expected distance of the elevator from the first flat layer switch triggering the elevator to the second flat layer switch triggering the elevator, and obtaining the correction coefficient of the elevator.

It can be understood that a plurality of flat layer switches (generally arranged at the top of the elevator car) are arranged on the elevator car, photoelectric switches or magnetic switches are adopted, flat layer plugboards are arranged at preset positions on the wall of the elevator hoistway, the flat layer plugboards have a certain length, and when the flat layer plugboards are inserted into the flat layer switches, light or magnetic emission is isolated, so that signals opposite to those before insertion are generated, namely flat layer signals, and whether the elevator runs to the corresponding positions is detected through the flat layer signals. The elevator has set gradually first flat layer switch and second flat layer switch in this application, can understand that first flat layer switch is flat layer switch or lower flat layer switch, and second flat layer switch is flat layer switch or lower flat layer switch also, and first flat layer switch is different with the second flat layer switch, when the midpoint of two flat layer switches and the midpoint of flat layer picture peg coincide, is in elevator flat layer position this moment. Whether the elevator goes up or down, the first flat layer switch is a switch triggered by the flat layer plugboard firstly, and the second flat layer switch is a switch triggered by the flat layer plugboard afterwards. When the elevator runs to the target leveling position, the system obtains the running distance of the elevator through the pulse number of the elevator traction machine encoder, and according to the starting point of triggering the first leveling switch from the leveling plugboard to the stopping point of triggering the second leveling switch, the running distance of the elevator can be obtained when the elevator triggers the first leveling switch and the second leveling switch successively according to the pulse number of the elevator traction machine encoder, so that the actual running distance of the elevator can be obtained. It will be appreciated that the speed of operation of the elevator in triggering the travel distance between the first floor switch and the second floor switch may be preset by the relevant technician, of course, independent of the calculation of the actual distance traveled by the elevator. Preferably, in view of the user experience, the elevator is smoothly slowed down during operation between triggering the first floor switch and triggering the second floor switch. Further, the desired distance is an ideal running distance of the elevator in which the elevator can accurately stop at the flat floor position, and can be generally obtained when the elevator performs initial self-learning, so as to obtain a correction coefficient of the elevator based on the actual distance and the desired distance.

Step S120, obtaining the expected residual distance from the triggering of the second leveling switch to the target leveling; and obtaining a correction distance based on the correction coefficient and the expected remaining distance, and controlling the elevator to run to the target leveling position from triggering the second leveling switch based on the correction distance.

When the first leveling switch and the second leveling switch are triggered, the actual running distance of the elevator can be determined during the process of running the elevator from one leveling switch to the other leveling switch, and further, after the actual distance of the elevator is determined, a correction coefficient can be obtained based on the actual distance and the expected distance, and the correction coefficient reflects the deviation degree between the actual running distance and the expected running distance of the elevator. The expected remaining distance is the remaining running distance of the ideal state that the elevator can accurately stop at the flat floor position, so that the required correction distance can be accurately obtained based on the correction coefficient and the expected remaining distance, and the elevator is controlled to move by the corresponding correction distance so as to accurately reach the target flat floor position, wherein the correction distance runs to the remaining actual running distance between the target flat floor positions after the second flat floor switch is triggered. In an alternative embodiment, the speed of the elevator gradually decreases in the moving process of the correction distance until the speed reaches the target leveling position and becomes zero, and it can be understood that after the correction coefficient is determined, the elevator performs system compensation based on the correction coefficient, so that a high-precision leveling layer is realized, and the problem of inaccurate elevator parking caused by various environmental factors is effectively solved. The target leveling layer is the leveling layer position of the floor reached by the elevator, and the floor can be automatically selected by a user in the elevator car according to floor key setting or a system according to a preset program.

Through the steps S110 to S120, determining the actual distance from the triggering of the first flat layer switch to the running of the elevator until the triggering of the second flat layer switch, calculating a correction coefficient according to the actual distance and the expected distance, determining the expected remaining distance from the triggering of the second flat layer switch to the target flat layer, and determining the correction distance based on the correction coefficient and the expected remaining distance, thereby controlling the elevator to run to the target flat layer position; and the correction coefficient can be timely updated in actual application, so that the current high-precision leveling layer is realized, the problem of inaccurate elevator stopping caused by slipping is solved, and the leveling layer parameters are not required to be additionally debugged.

In one embodiment, the method further comprises:

determining a target leveling layer, and controlling an elevator to move towards the target leveling layer at a preset speed;

when the elevator is detected to run to a preset deceleration position corresponding to the target leveling layer, controlling the elevator to run based on the second speed until the first leveling layer switch acts; wherein the preset speed is greater than the second speed.

Specifically, when the elevator runs from the current position to the target leveling layer, the elevator is controlled to run at a preset speed, and when the elevator runs to a preset deceleration position at the preset speed, the elevator is controlled to switch from the preset speed to a second speed. Wherein the preset speed and the second speed can be preset by a technician; the preset speed can shorten the leveling time, and the setting principle of the speed is that the system can still ensure that the leveling area is effectively and accurately leveled under the condition that the elevator is abnormally slipped or the elevator is in a failure state to cause position deviation and directly reaches the leveling area without running at a reduced speed; the second speed provides for a later precision flat layer and therefore requires a deceleration from a preset speed. In an alternative embodiment, for the case of a nearby horizon, the preset speed is not too high, the difference between the preset speed and the second speed is not too great, the preset speed may be set to 300m/s to 500m/s, the second speed is less than the preset speed, and the second speed may be set to 100m/s to 300m/s, due to the close proximity to the target horizon. In another alternative embodiment, for the case of an end station leveling, since the distance from the target leveling is far, in order to shorten the leveling time, the preset speed is higher, the difference from the second speed is larger, the preset speed is generally 10% -100% of the rated speed of the elevator, and the preset speed is set according to the distance between the elevator and the end station leveling. The preset deceleration position is set based on the condition that the elevator can be lowered from the preset speed to the second speed and the smooth speed curve is ensured, so that the comfort of the elevator is effectively ensured. For the case of a nearby flat layer, it is typically located nearer to the target flat layer, such as 300mm to 800mm from the target flat layer, due to the faster deceleration; for the case of an end station landing, the deceleration distance between the target landing and the preset deceleration position is then related to the nominal speed of the elevator. Through the setting of preset deceleration position, prompt elevator is decelerating in advance when will reaching the target flat bed to guarantee that the speed curve of returning flat bed in-process is smoother, effectively improve user's comfort.

In one embodiment, the method further comprises:

controlling the elevator to move towards the nearby flat layer at a preset first speed under the condition that the target flat layer is the nearby flat layer; wherein the nearest flat layer is the nearest layer to the elevator;

when the target leveling layer is an end station leveling layer, controlling the elevator to move towards the end station leveling layer at a preset third speed; wherein the third speed is greater than the first speed; the end station level is the highest level or the lowest level.

Specifically, the nearby flat layer is the flat layer position closest to the current position of the elevator; the end station level is the level position of the highest or lowest level and the third speed is greater than the first speed, which may typically be set to 10% to 100% of the rated speed of the elevator. By the method, the target leveling layer is divided into the nearby leveling layer and the end station leveling layer, and the distance between the nearby leveling layer and the elevator is generally smaller than the distance between the end station leveling layer and the elevator in consideration of the fact that the distance between the nearby leveling layer and the elevator is smaller than the distance between the end station leveling layer and the elevator, so that the third speed is set to be larger than the first speed, and the time for returning the elevator to the leveling layer can be effectively shortened on the basis of ensuring the comfort level of a user riding the elevator.

In one embodiment, the method further comprises:

when the distance between the elevator and the nearby leveling layer is detected to be smaller than a preset deceleration distance under the condition that the target leveling layer is the nearby leveling layer, switching the running speed of the elevator from a first speed to a second speed, and controlling the elevator to run to a first leveling layer switch at the second speed to be triggered;

when the target leveling layer is an end station leveling layer and the elevator is detected to run to a preset deceleration position which is a preset deceleration distance away from the end station leveling layer, the running speed of the elevator is switched from a third speed to a second speed, and the elevator is controlled to run to the first leveling layer at the second speed to be triggered.

Specifically, when the target flat layer is the nearby flat layer, the preset deceleration distance can be set, whether the distance between the actual position of the elevator and the position of the target flat layer is smaller than the preset deceleration distance or not can be calculated in real time, and deceleration is started once the distance is smaller than the preset deceleration distance. When the target leveling layer is an end station leveling layer, the preset deceleration position is set by a preset deceleration distance, and the preset deceleration distance is determined according to a preset speed. For example, a deceleration switch is preset at a preset deceleration distance from the end landing floor, which is typically placed on the hoistway wall near the top and bottom landing floors, and when the elevator is traveling to the deceleration switch, the elevator is forced to decelerate until it reaches a second speed and travels at a uniform speed.

In one embodiment, the method further comprises:

the desired remaining distance is obtained based on the desired distance and the flat bed insert plate length.

In particular, the desired distance is the distance that the elevator travels from when the first floor switch is triggered to when the second floor switch is triggered, in an ideal situation, and in an alternative embodiment is generally obtained during a self-learning phase of the elevator. The desired remaining distance is the desired remaining distance that the elevator travels to the target floor in an ideal state from the triggering of the second floor switch, wherein the target floor is positioned generally at the midpoint of the floor insert. It will be appreciated that in an ideal situation, i.e. in the case of an elevator capable of accurately leveling, the desired remaining distance is half the sum of the desired distance and the length of the leveling insert. Through the embodiment, a foundation is laid for calculating the correction distance of the elevator which is actually required to run when the elevator is actually applied, namely, when a certain degree of slipping phenomenon exists.

In one embodiment, the method further comprises:

comparing the expected distance with the actual distance to obtain a correction coefficient; wherein the comparison process includes calculating a quotient of the actual distance and the desired distance.

Specifically, the correction coefficient reflects the deviation degree between the actual running distance and the expected running distance of the elevator, so that the correction coefficient and the expected remaining distance are combined, and the actual distance travelled by the elevator from the triggering of the second leveling switch to the target leveling position when the elevator is in actual work, namely the correction distance is obtained. It will be appreciated that in some embodiments the comparison process involves calculating the quotient of the actual distance and the desired distance, but that other calculation methods may be used that reflect the degree of deviation between the actual travel distance and the desired travel distance of the elevator. By the method, different elevator running distances can be corrected in a targeted manner, the accurate correction distance can be calculated without additionally debugging other parameters, and the problem of inaccurate elevator stopping caused by the slipping phenomenon of the steel belt steel wire rope and the traction sheave of the elevator is effectively solved.

In one embodiment, the method further comprises:

when a self-learning instruction for the elevator is acquired, the elevator is controlled to acquire a desired remaining distance and a desired distance at a preset self-learning speed based on the self-learning instruction.

Specifically, in practical application, generally, in a new elevator installation stage, an elevator receives a self-learning instruction indicated by a technician for the first time, and learns values such as a correction value corresponding to each floor, an upper leveling distance and a lower leveling distance corresponding to each floor, and the like at a preset self-learning speed based on the self-learning instruction, wherein the correction value includes a top leveling correction value, a bottom leveling correction value, an upper leveling correction value and a lower leveling correction value, and the upper leveling distance and the lower leveling distance corresponding to a target leveling are the same value, which is half of the sum of the leveling board length and the running distance for triggering two leveling switches, however, in practical application, the accuracy of the requirement for installing the leveling board is relatively high, so that in order to facilitate installation, the installation requirement is reduced, the correction value is increased, and the leveling board position may not be at the midpoint position of the leveling board after adjustment. It will be appreciated that the value of each data acquired when the elevator is first operated may be approximately equal to the value of each data corresponding to when the elevator is in an ideal state without slipping. Of course, the self-learning can be instructed at other times, and as long as the elevator can accurately level through debugging during self-learning, even if the elevator has a slipping phenomenon during self-learning, the self-learning acquired data is still ideal data. Further, the expected distance for the elevator to travel from the triggering of the first floor switch to the triggering of the second floor switch can also be obtained; through this embodiment, can obtain the ideal numerical value of all kinds of data of elevator under ideal state at elevator self-learning in-process, be convenient for follow-up when elevator is actual to be operated with the data that obtain and compare to the accurate control elevator is accomplished and is returned the flat bed operation according to the comparison result, avoids the flat bed inaccuracy that the phenomenon of skidding of elevator arouses.

The embodiment also provides a preferable embodiment of the elevator leveling control method.

Fig. 2 is a schematic diagram of an arrangement of flat layer switches in one embodiment. The leveling switches are generally disposed at the top of the car, and four leveling switches, namely a first leveling switch 21, a second leveling switch 24, are sequentially disposed from top to bottom, and the two middle leveling switches are respectively the first leveling switch and the second leveling switch described above, for example, the two middle leveling switches may be respectively the first leveling switch 22 and the second leveling switch 23. It can be seen from fig. 2 that the distance between the re-flat layer switch and the flat layer switch is slightly larger than the distance between the first flat layer switch 22 and the second flat layer switch 23, and preferably the distance between the re-flat layer switch and the flat layer switch may be set to 85mm, and the distance between the first flat layer switch 22 and the second flat layer switch 23 may be set to 80mm. The installation positions of the leveling switches are fixed, but as the number of elevator runs increases, the steel belts or steel wires for hoisting the elevator are worn, and the elevator runs with slipping phenomenon, so that the measurement of the positions where the elevator triggers the first leveling switch 22 and the elevator triggers the second leveling switch 23 in the related art has deviation.

Fig. 3 is a schematic diagram of a change in the running speed of an elevator when the elevator returns to the leveling nearby in one embodiment, and the control method for running to the leveling nearby in the present application includes the following four stages: step one, a preset middle and low speed operation, namely the first speed, is adopted, the first speed range is 300 m/s-500 m/s, the elevator is operated at the first speed until the distance between the elevator and the nearby flat floor is smaller than a preset deceleration distance, and in an alternative embodiment, the preset deceleration distance is shorter and can be set at a position with a distance of 300 mm-800 mm from the target flat floor position; then, a second stage is carried out, wherein the first speed is switched to a second speed which is smaller than the first speed, and is preferably set to be 100m/s to 300m/s; the second stage enters the third stage when the first leveling switch is triggered, the running speed starts to be reduced by the second speed, and the running speed of the third stage can be preset by a related technician to be a fixed running speed smaller than the second speed, or the running speed of the elevator in the third stage smoothly reduces according to a preset speed curve in consideration of user experience. The third stage is when the elevator runs to the first leveling switch 22 and the second leveling switch 23 are triggered, so that the actual distance and the expected distance from the first leveling switch 22 to the second leveling switch 23 are obtained, and then the correction coefficient can be determined according to the quotient of the actual distance and the expected distance; in the fourth stage, the elevator is operated from triggering the second leveling switch 23 to the target leveling, the correction distance is obtained by integrating the correction coefficient and the expected remaining distance, and the elevator is controlled to realize high-precision leveling, and it is understood that the operation speed of the elevator in the fourth stage is further smoothly reduced on the basis of the operation speed of the third stage. The upper leveling distance/lower leveling distance, the upper leveling correction value/lower leveling correction value and the expected distance in the process can be obtained in a self-learning process after the elevator is installed, additional debugging of leveling parameter is not needed, and meanwhile the problem of inaccurate elevator stopping caused by slipping can be solved.

When the target leveling layer is an end station leveling layer, fig. 4 is a schematic diagram of a change of an elevator operation speed when the end station returns to the leveling layer in one embodiment, and the control method of the return end station leveling layer in the present application includes the following four stages: the first stage, the elevator runs at a third speed, and the third speed can be set to be 10-100% of the rated speed of the elevator, so that the time for returning to the leveling layer is effectively shortened; after triggering a speed reducing switch on the elevator shaft wall, namely when the elevator runs to a preset speed reducing position corresponding to a flat floor from an end station, entering a stage II, and decelerating the elevator and adopting low-speed running, wherein the speed reducing condition can be automatically adjusted according to the speed of the elevator, so that the abnormal condition that the elevator is not subjected to top-rushing or squatting under the displacement deviation caused by abnormal sliding or power failure of the elevator; when the elevator runs to trigger the first leveling switch, entering a third stage, further reducing the running speed, preferably, the running speed of the third stage can be preset by a related technician to be a fixed running speed smaller than the running speed of the second stage, or the running speed of the elevator in the third stage smoothly reduces according to a preset speed curve in consideration of user experience; when both leveling switches are in a trigger state, acquiring the actual distance and the expected distance of the elevator from the first leveling switch triggering the elevator to the second leveling switch triggering the elevator, determining a correction coefficient based on the actual distance and the expected distance, entering a stage IV, calculating the correction distance based on the correction coefficient and the expected remaining distance, and realizing the high-precision leveling of the elevator through the correction distance, wherein the operation speed of the elevator in the stage IV is further smoothly reduced on the basis of the operation speed of the stage III.

Fig. 5a is a schematic diagram of a floor control during self-learning of an elevator according to an embodiment, fig. 5b is a schematic diagram of a floor control during actual running of an elevator according to an embodiment, and for the fourth stage described above, s1= UpL-L1 and s2= DnL-L1 are shown in fig. 5a, wherein UpL is an upper floor distance, dnL is a lower floor distance, L1 is a desired distance traveled by an elevator from triggering a first floor switch of the elevator to triggering a second floor switch of the elevator, and S1 and S2 are desired remaining distances of the elevator in an ideal state; in fig. 5b, when the target floor is the nearby floor and the running direction of the elevator is up, the calculation formula of the corrected distance S3 of the elevator relative to the target floor is:

S3＝(UpL+UpL _Fn -L1)*L2/L1

therein, upL _Fn For the upper floor correction value, L2 is the actual distance of the elevator from the triggering of the first floor switch of the elevator to the triggering of the second floor switch of the elevator, L2/L1 is the correction coefficient, wherein further, the upper floor distance UpL, the upper floor correction value UpL _Fn The desired distance L1 can be obtained by self-learning of the elevator before the elevator is actually put into use.

When the target leveling layer is an end station leveling layer and the running direction of the elevator is upward, the calculation formula of the correction distance S3 of the elevator relative to the target leveling layer is as follows:

S3＝(UpL+UpL _FT -L1)*L2/L1

therein, upL _FT As a top level correction value, a specific value of the top level correction value can be obtained by the elevator at the time of self-learning.

Fig. 5b further includes a calculation formula of a correction distance S4 of the elevator relative to the target floor when the target floor is a nearby floor and the running direction of the elevator is down, wherein the calculation formula is:

S4＝(DnL+DnL _Fn -L1)*L2/L1

wherein DnL is the lower flat layer distance, dnL _Fn For the lower floor correction value, the lower floor distance and the lower floor correction value can also be obtained by the elevator during self-learning. It will be appreciated that the upper and lower flat distances referred to above are equal and further that the upper and lower flat distances are equal to half the sum of the flat panel length and the travel distance to activate both flat switches.

When the target leveling layer is an end station leveling layer and the running direction of the elevator is descending, the calculation formula of the correction distance S4 of the elevator relative to the target leveling layer is as follows:

S4＝(DnL+DnL _FB -L1)*L2/L1

therein, dnL _FB As the floor correction value, a specific value of the floor correction value can be obtained by the elevator at the time of self-learning.

In summary, the above formula covers all conditions encountered when the elevator returns to the flat floor, and correspondingly provides a calculation method, so that the numerical value of the accurate correction distance required by the elevator to run to the target flat floor position can be calculated, and the accurate stopping of the elevator at the target flat floor position can be completed without additionally debugging the return to flat floor parameters.

It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.

Based on the same inventive concept, the embodiment of the application also provides an elevator leveling control device for realizing the elevator leveling control method. The implementation of the solution provided by the device is similar to the implementation described in the above method, so the specific limitations in the embodiments of one or more elevator leveling control devices provided below can be referred to above for limitations of the elevator leveling control method, and are not repeated here.

In one embodiment, as shown in fig. 6, there is provided an elevator landing control device including: a calculation module 61 and a correction module 62, wherein:

the calculation module 61 is configured to obtain an actual distance and an expected distance of the elevator from triggering the first leveling switch to triggering the second leveling switch, so as to obtain a correction coefficient of the elevator; acquiring an expected residual distance from triggering a second leveling switch to a target leveling; obtaining a correction distance based on the correction coefficient and the expected remaining distance;

and a correction module 62 for controlling the elevator to run to the target floor from triggering the second floor switch based on the correction distance.

Specifically, the calculating module 61 is configured to obtain an actual distance and a desired distance from when the first leveling switch is triggered to when the second leveling switch is triggered, where the actual distance is obtained by counting accumulated encoder pulses during the actual operation of the elevator, and the desired distance is obtained during a self-learning phase of the elevator, and is a value in an ideal state where the elevator can precisely level. The calculation module 61 further calculates a correction factor for the elevator based on the actual distance and the desired distance. Further, the calculation module 61 obtains a desired remaining distance of the elevator from the triggering of the second floor switch to the target floor and obtains a corrected distance based on the correction coefficient and the desired remaining distance. The calculation module 61 sends the above-mentioned correction distance to the correction module 62, and the correction module 62 controls the elevator to run from the second landing switch based on the correction distance until the accurate stopping of the elevator at the target landing position is completed.

The individual modules in the elevator landing control described above can be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.

In one embodiment, an elevator landing control system is provided that includes an elevator car and an elevator landing control. The elevator leveling control device is used for controlling the elevator car to move to a target leveling according to the elevator leveling control method.

In one embodiment, a computer device is provided, which may be a server, the internal structure of which may be as shown in fig. 7. The computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the computer device is used for storing algorithm data for controlling the elevator car. The network interface of the computer device is used for communicating with an external terminal through a network connection. Which computer program, when being executed by a processor, is presented to realize the above-mentioned elevator landing control method.

It will be appreciated by those skilled in the art that the structure shown in fig. 7 is merely a block diagram of some of the structures associated with the present application and is not limiting of the computer device to which the present application may be applied, and that a particular computer device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.

It should be noted that, user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, presented data, etc.) referred to in the present application are information and data authorized by the user or sufficiently authorized by each party.

Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the various embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the various embodiments provided herein may include at least one of relational databases and non-relational databases. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic units, quantum computing-based data processing logic units, etc., without being limited thereto.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.

Claims (10)

1. A method of elevator landing control, the method comprising:

acquiring the actual distance and the expected distance of the elevator from triggering a first flat layer switch of the elevator to triggering a second flat layer switch of the elevator, and obtaining a correction coefficient of the elevator;

acquiring an expected remaining distance from triggering the second leveling switch to the target leveling;

and obtaining a correction distance based on the correction coefficient and the expected residual distance, and controlling the elevator to run to a target flat floor from triggering the second flat floor switch based on the correction distance.

2. The method of claim 1, wherein prior to obtaining the actual distance traveled by the elevator from triggering a first landing switch of the elevator to triggering a second landing switch of the elevator and a desired distance, the method further comprises:

determining the target flat layer, and controlling the elevator to move towards the target flat layer at a preset speed;

when detecting that the elevator runs to a preset deceleration position corresponding to the target flat floor, controlling the elevator to run to the first flat floor switch at a second speed to be triggered; wherein the preset speed is greater than the second speed.

3. The method of claim 2, wherein the determining the target floor and controlling the elevator to move toward the target floor at a preset speed comprises:

controlling the elevator to move towards the nearby flat layer at a preset first speed under the condition that the target flat layer is the nearby flat layer; wherein the nearby flat layer is the nearest layer to the elevator;

controlling the elevator to move towards the end station leveling layer at a preset third speed under the condition that the target leveling layer is the end station leveling layer; wherein the third speed is greater than the first speed; the end station flat layer is the highest layer or the lowest layer.

4. The method of claim 2, wherein the controlling the elevator to travel at a second speed to the first landing switch is triggered upon detecting the elevator traveling to a preset deceleration position corresponding to the target landing, comprising:

when the distance between the elevator and the nearby flat layer is detected to be smaller than a preset deceleration distance under the condition that the target flat layer is the nearby flat layer, switching the running speed of the elevator from a first speed to a second speed, and controlling the elevator to run at the second speed to the first flat layer switch to be triggered;

when the target leveling layer is an end station leveling layer and the elevator is detected to move to a preset deceleration position which is a preset deceleration distance away from the end station leveling layer, the operation speed of the elevator is switched from a third speed to a second speed, and the elevator is controlled to move at the second speed until the first leveling switch is triggered.

5. The method according to claim 1, wherein the method further comprises:

the desired remaining distance is obtained based on the desired distance and a flat bed insert plate length.

6. The method according to claim 1, characterized in that the obtaining of the correction factors of the elevator comprises:

comparing the expected distance with the actual distance to obtain the correction coefficient; wherein the comparison process includes calculating a quotient of the actual distance and the desired distance.

7. The method according to any one of claims 1 to 6, further comprising:

when a self-learning instruction for the elevator is acquired, controlling the elevator to acquire a desired remaining distance and a desired distance at a preset self-learning speed based on the self-learning instruction.

8. An elevator landing control device, the device comprising:

the calculation module is used for obtaining the actual distance and the expected distance of the elevator from the triggering of the first flat layer switch to the triggering of the second flat layer switch, and obtaining the correction coefficient of the elevator; acquiring an expected remaining distance from triggering the second leveling switch to the target leveling; obtaining a correction distance based on the correction coefficient and the expected remaining distance;

and the correction module is used for controlling the elevator to run to a target flat floor from triggering the second flat floor switch based on the correction distance.

9. An elevator landing control system, characterized in that the system comprises an elevator car and an elevator landing control according to claim 8;

the elevator landing control apparatus controls the elevator car to travel to a target landing in the elevator landing control method according to any one of claims 1 to 7.

10. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1 to 7 when the computer program is executed.