CN111824888B  Elevator balance coefficient detection method and device, elevator and computer storage medium  Google Patents
Elevator balance coefficient detection method and device, elevator and computer storage medium Download PDFInfo
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 CN111824888B CN111824888B CN202010811234.XA CN202010811234A CN111824888B CN 111824888 B CN111824888 B CN 111824888B CN 202010811234 A CN202010811234 A CN 202010811234A CN 111824888 B CN111824888 B CN 111824888B
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 B—PERFORMING OPERATIONS; TRANSPORTING
 B66—HOISTING; LIFTING; HAULING
 B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
 B66B5/00—Applications of checking, faultcorrecting, or safety devices in elevators
 B66B5/0006—Monitoring devices or performance analysers
 B66B5/0018—Devices monitoring the operating condition of the elevator system
 B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
Abstract
The invention discloses a method, a device and equipment for detecting the balance coefficient of an elevator and a computer storage medium, wherein the method for detecting the balance coefficient of the elevator comprises the following steps: determining theoretical motor output at different positions when a lift car of the elevator runs in a noload mode, calculating an initial balance coefficient according to the theoretical motor output, and running the elevator according to the initial balance coefficient; detecting whether the lift car is in an idle running state or not in real time; if yes, acquiring actual motor output corresponding to the lift car at different positions, calculating actual balance coefficients corresponding to the actual motor output, and detecting whether the actual balance coefficients are matched with a preset value range in real time; and if a target balance coefficient which is not matched with a preset value range exists in each actual balance coefficient, performing early warning processing. The invention improves the efficiency of detecting the balance coefficient of the elevator.
Description
Technical Field
The invention relates to the technical field of elevators, in particular to an elevator balance coefficient detection method and device, an elevator and a computer storage medium.
Background
The elevator balance coefficient not only affects the load, but also affects the tension of the steel wire ropes on the two sides of the traction wheel, the tension affects the specific pressure of the steel wire ropes in the rope grooves, and the larger the tension is, the larger the specific pressure is, the stronger the traction capacity of the steel wire ropes is; unreasonable balancing coefficients may cause potential safety hazards to the elevator. In order to ensure that the operation of the elevator is close to the ideal balance state and safety, a proper balance coefficient needs to be selected. The current method for determining the balance coefficient of the elevator generally loads a car with a weight which is 40% 50% of the rated weight, the car is placed in the middle of a hoistway and is parallel to a counterweight, a brake releasing mode is used, a counterweight is added or reduced on the counterweight side to balance the car (the upward and downward barring forces are equal), and the percentage of the load weight of the car and the rated load weight of the car is the balance coefficient of the elevator. Or the current detection method is adopted, namely the car respectively carries 0%, 25%, 40%, 50%, 75%, 100% and 110% of rated load capacity to run up and down in the whole process, when the car and the counterweight run to the same height, the current value of the motor is recorded, a currentload curve is drawn, and the balance coefficient is determined at the intersection point of the upper running curve and the lower running curve.
Disclosure of Invention
The invention mainly aims to provide a method and a device for detecting an elevator balance coefficient, an elevator and a computer storage medium, aiming at solving the technical problem of how to improve the efficiency of detecting the elevator balance coefficient and carry out realtime monitoring.
In order to achieve the purpose, the invention provides an elevator balance coefficient detection method, which comprises the following steps:
determining theoretical motor output at different positions when a lift car of the elevator runs in a noload mode, calculating an initial balance coefficient according to the theoretical motor output, and running the elevator according to the initial balance coefficient;
detecting whether the lift car is in an idle running state or not in real time;
if yes, acquiring actual motor output corresponding to the lift car at different positions, calculating actual balance coefficients corresponding to the actual motor output, and detecting whether the actual balance coefficients are matched with a preset value range in real time;
and if a target balance coefficient which is not matched with a preset value range exists in each actual balance coefficient, performing early warning processing.
Optionally, the step of obtaining actual motor outputs of the car at different positions and calculating an actual balance coefficient corresponding to each of the actual motor outputs includes:
detecting the running position of the car in real time, and if the running position is in the middle of all the running positions of the car, acquiring the actual motor output corresponding to the middle of the car and the load force corresponding to the rated load capacity of the car;
and calculating an actual balance coefficient corresponding to the middle position according to the theoretical motor output of the car at the middle position, the actual motor output and the load weight.
Optionally, the step of calculating an actual balance coefficient corresponding to the intermediate position according to the theoretical motor output of the car at the intermediate position, the actual motor output and the load weight includes:
detecting the running direction of the car at the middle position, and if the running direction of the car at the middle position is an ascending direction, calculating the motor output of the car at the middle position according to the theoretical motor output of the car at the middle position;
and determining a middle balance coefficient calculation formula according to the actual motor output, the middle position motor output, the initial balance coefficient of the car at the middle position and the load weight, and calculating an actual balance coefficient corresponding to the middle position based on the middle balance coefficient calculation formula.
Optionally, after the step of detecting the running position of the car in real time, the method further comprises:
if the running positions of the car are at other positions except the middle position among all the running positions of the car, acquiring the actual motor output corresponding to the other positions of the car and the load force corresponding to the rated load capacity of the car;
and obtaining theoretical motor output of the car at other positions, calculating a difference value between the actual motor output and the theoretical motor output, and calculating actual balance coefficients corresponding to other positions according to the difference value, the load weight and initial balance coefficients corresponding to other positions of the car.
Optionally, the step of calculating an actual balance coefficient corresponding to the other position according to the difference, the load force and the initial balance coefficient corresponding to the car at the other position includes:
detecting whether the running direction of the car at the other positions is an ascending direction;
if so, determining a new balance calculation formula of the car at the other positions according to the weight difference of the steel wire ropes of the car at the other positions, the weight load of the car at the other positions and the initial balance coefficients of the car at the other positions;
and calculating actual balance coefficients corresponding to the other positions according to the difference value and the new balance calculation formula.
Optionally, before the step of determining the difference in the wire rope gravity of the car at the other position, the method includes:
acquiring the output of an uplink theoretical motor when the car ascends at other positions and the output of a downlink theoretical motor when the car descends at other positions;
and acquiring theoretical motor output and value when the lift car runs at a middle position, calculating a first sum value between the uplink theoretical motor output and the downlink theoretical motor output, and calculating the steel wire rope gravity difference of the lift car at other positions according to the theoretical motor output sum value and the first sum value.
Optionally, after the step of detecting whether the running direction of the car at the other position is ascending, the method includes:
if the running direction of the car at the other positions is descending, acquiring the theoretical motor output and value when the car runs at the middle position;
determining the latest balance calculation formula of the car at other positions according to the theoretical motor output and the friction force of the car at other positions and the initial balance coefficients of the car at other positions;
and calculating actual balance coefficients corresponding to the other positions according to the difference value and the latest balance calculation formula.
In addition, in order to achieve the above object, the present invention provides an elevator balance coefficient detection device, including:
the determining module is used for determining theoretical motor output at different positions when a lift car of the elevator runs in a noload mode, calculating an initial balance coefficient according to the theoretical motor output, and running the elevator according to the initial balance coefficient;
the detection module is used for detecting whether the lift car is in an idle running state in real time;
the calculation module is used for acquiring actual motor output corresponding to the lift car at different positions, calculating actual balance coefficients corresponding to the actual motor output and detecting whether the actual balance coefficients are matched with a preset value range or not in real time if the actual motor output is the actual motor output;
and the early warning module is used for carrying out early warning processing if a target balance coefficient which is not matched with a preset value range exists in each actual balance coefficient.
In addition, to achieve the above object, the present invention also provides an elevator balance coefficient detecting apparatus, including: the elevator balance coefficient detection method comprises a memory, a processor and an elevator balance coefficient detection program stored on the memory and capable of running on the processor, wherein the elevator balance coefficient detection program realizes the steps of the elevator balance coefficient detection method when being executed by the processor.
In addition, to achieve the above object, the present invention further provides a computer storage medium having an elevator balance coefficient detection program stored thereon, which when executed by a processor, implements the steps of the elevator balance coefficient detection method as described above.
The method comprises the steps of determining theoretical motor output at different positions when a lift car of the elevator operates in a noload mode, calculating an initial balance coefficient according to the theoretical motor output, and operating the elevator according to the initial balance coefficient; detecting whether the lift car is in an idle running state or not in real time; if yes, acquiring actual motor output corresponding to the lift car at different positions, calculating actual balance coefficients corresponding to the actual motor output, and detecting whether the actual balance coefficients are matched with a preset value range in real time; and if a target balance coefficient which is not matched with a preset value range exists in each actual balance coefficient, performing early warning processing. The initial balance coefficients are calculated according to the theoretical motor output at different positions when the lift car of the elevator runs in an idle load mode, and the elevator runs according to the initial balance coefficients, so that the phenomenon that a heavy object needs to be added manually and then the balance coefficients are calculated in the prior art is avoided, and after the elevator runs according to the initial balance coefficients, when the lift car is detected to be in an idle load running state in real time, the actual balance coefficients are calculated according to the actual motor output corresponding to the lift car at different positions, so that the realtime online monitoring of the balance coefficients of the elevator can be realized, early warning processing is timely carried out when target balance coefficients which are not matched with a preset value range exist, unreasonable balance coefficients caused by factors such as excessive decoration, maintenance and the like are effectively prevented, and the efficiency of detecting the balance coefficients of the elevator is improved.
Drawings
Fig. 1 is a schematic structural diagram of an elevator balance coefficient detection device in a hardware operating environment according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of an embodiment of the elevator balance coefficient detection method of the invention;
fig. 3 is a schematic diagram of the device module of the elevator balance coefficient detection device of the invention;
FIG. 4 is a schematic flow chart of elevator selflearning in the elevator balance coefficient detection method of the invention;
fig. 5 is a schematic flow chart of elevator online detection in the elevator balance coefficient detection method of the invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, fig. 1 is a schematic structural diagram of an elevator balance coefficient detection device in a hardware operating environment according to an embodiment of the present invention.
The elevator balance coefficient detection device in the embodiment of the invention can be a terminal device such as a PC (personal computer) or a server (such as an X86 server) with a virtualization platform.
As shown in fig. 1, the elevator balance coefficient detecting apparatus may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WIFI interface). The memory 1005 may be a highspeed RAM memory or a nonvolatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the terminal structure shown in fig. 1 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, the memory 1005, which is a type of computer storage medium, may include an operating system, a network communication module, a user interface module, and an elevator balance coefficient detection program therein.
In the terminal shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to invoke the elevator balance factor detection program stored in the memory 1005 and perform the operations in the following security component's privilege configuration method embodiments.
Based on the hardware structure, the embodiment of the elevator balance coefficient detection method is provided as follows.
Referring to fig. 2, fig. 2 is a schematic flow chart of an embodiment of a method for detecting the balance coefficient of an elevator, the method comprising:
step S10, determining the theoretical motor output at different positions when the lift car of the elevator runs in noload, calculating an initial balance coefficient according to the theoretical motor output, and running the elevator according to the initial balance coefficient;
in the embodiment, the elevator balance coefficient detection method can realize elevator balance coefficient selflearning and friction force selflearning, and an online detection balance coefficient strategy. Through the elevator balance coefficient selflearning strategy and protection, the balance coefficient and the system friction force are selflearned through onetime noload upanddown running without adding a heavy object manually; and detecting the balance coefficient in real time, and carrying out early warning or protection after the balance coefficient exceeds a preset value, such as a national standard range, so as to prevent unreasonable balance coefficient caused by factors such as excessive decoration, work stealing and material reduction and the like. It should also be mentioned that in this embodiment the elevators are run at a steady speed, i.e. at a steady speed. And the motor output force F is used for balancing the gravity difference between the car and the counterweight, the gravity difference between the steel wire rope and the system friction force F. In the embodiment, the elevator has two running modes of ascending and descending, wherein the ascending is based on the elevator and runs towards the upper part of the elevator. The descending is based on the elevator and runs to the lower part of the elevator.
Therefore, in this embodiment, it is necessary to determine motor outputs, i.e., theoretical motor outputs, of the elevator at different positions when the car of the elevator is in noload operation, and because the elevator has two types of upgoing and downgoing directions, and the theoretical motor output of the elevator at the same position when the elevator is in the upgoing direction is different from the theoretical motor output of the elevator at the same position when the elevator is in the downgoing direction, in this embodiment, the theoretical motor output of the elevator at the same position when the elevator is in the upgoing direction is used as the first theoretical motor output, and the theoretical motor output of the elevator at the same position when the elevator is in the downgoing direction is used as the second theoretical motor output. Furthermore, since the elevator is in operation, it is necessary to determine the theoretical motor output (including the first theoretical motor output and the second theoretical motor output) at different positions when the elevator car is operating in an empty state. The output of the first theoretical motor when the elevators at different positions go upwards is calculated according to the following formula:
F_{uplink pos}＝(M_{Counterweight}M_{Car})g+M_{Wire rope pos}gf
Wherein, F_{Uplink pos}Which may be expressed as a first theoretical motor output. (M)_{Counterweight}M_{Car}) g can be expressed as the difference between car and counterweight weights. M_{Wire rope pos}g can be expressed as the difference in rope weight. f is the system friction.
The output of the second theoretical motor when the elevators at different positions descend is calculated according to the following formula:
F_{downstream pos}＝(M_{Counterweight}M_{Car})g+M_{Wire rope pos}g+f
Wherein, F_{Downstream pos}Which may be expressed as a second theoretical motor output.
And after the theoretical motor output force of each position is obtained through calculation, the balance coefficient of the elevator can be calculated. I.e. the initial equilibrium coefficient. That is, F can be substituted_{Uplink pos}And F_{Downstream pos}And subtracting to obtain the friction force f, thereby completing the selflearning of the elevator on the friction force f, namely:
f＝(F_{downstream pos}F_{Uplink pos})/2
To get F_{Uplink pos}And F_{Downstream pos}Adding to obtain the sum:
F_{uplink pos}+F_{Downstream pos}＝2(M_{Counterweight}M_{Car})g+2M_{Wire rope pos}g
And in order to avoid the influence of the gravity difference of the steel wire ropes, the motor output of the elevator at the middle floor can be directly obtained, namely the running position of the elevator car is at the middle position of all the running positions of the car. Namely:
F_{uplink pos}+F_{Downstream pos}＝2(M_{Counterweight}M_{Car})g，
The weight difference M of the car and the counterweight can be calculated according to the formula_{Counterweight}M_{Car}＝(F_{Up middle of}+F_{Down middle})/2g
And the balance coefficient K of the elevator is as follows: k ═ M_{Counterweight}M_{Car})/M_{Rated value}(ii) a The initial equilibrium coefficient K is thus K ═ F_{Up middle of}+F_{Down middle})/2M_{Rated value}g. And the difference in the gravity of the steel wire ropes at different positions can be expressed as M_{Wire rope pos}g＝(F_{Uplink pos}+F_{Downstream pos}F_{Up middle of}F_{Down middle})/2
After the initial balance coefficient is obtained, whether the initial balance coefficient exceeds a preset value range (can be any value range preset by a user, such as 0.40.5) needs to be detected, if the initial balance coefficient exceeds the preset value range, early warning processing is carried out to inform the user, and if the initial balance coefficient does not exceed the preset value range, the elevator can be operated according to the initial balance coefficient, so that the selflearning process of the elevator is completed. As shown in fig. 4, when the balance coefficient of the elevator is detected, the elevator car is controlled to ascend at a constant speed in a noload manner, the motor output at the position corresponding to the ascending position is recorded, the elevator car is controlled to descend at a constant speed, the motor output at the position corresponding to the descending position is recorded, and the balance coefficient is performed according to the motor output at the position corresponding to the ascending position, the motor output at the position corresponding to the descending position and the formula until the balance coefficient is completed, so that the selflearning of the balance coefficient of the elevator is completed.
Step S20, detecting whether the lift car is in an idle running state in real time;
after the selflearning of the elevator is completed, whether the car is in an idle running state or not (that is, the car is occupied by no person at this time) needs to be detected in real time, and the mode of detecting whether the car is in the idle running state or not can be that whether a call instruction is received by the elevator within a preset time period (any time period set in advance by a user, such as 10 minutes) or not is detected (that is, the call instruction of the elevator is triggered by the user pressing a call button), if not, the image information inside the car is continuously acquired through the camera of the internet of things, the image information is identified, and whether the car is in the idle running state or not is determined according to the identification result. And when the cage is not in the idle running state, the cage is continuously detected until the cage is detected to be in the idle running state.
Step S30, if yes, acquiring actual motor output corresponding to the lift car at different positions, calculating actual balance coefficients corresponding to the actual motor output, and detecting whether the actual balance coefficients are matched with a preset value range in real time;
when the lift car is found to be in an idle running state through judgment, the actual motor output force of the lift car corresponding to different positions needs to be acquired so as to perform online balance coefficient detection on the lift in real time, and when each actual balance coefficient is calculated according to the actual motor output force, the adopted modes are basically the same, namely, whether the lift is in a stablespeed ascending mode or a stablespeed descending mode is determined firstly, namely, the running direction of the lift car is detected, and the actual balance coefficient is calculated in different calculation modes according to different running directions.
When the elevator is going upwards at a stable speed and the running direction of the car is going upwards, the method can be based on the formula:
F_{uplink pos}＝(M_{Counterweight}M_{Car})g+M_{Wire rope pos}gf
To determine the actual motor output of the elevator at the current position, i.e. the first theoretical motor output F in the formula_{Uplink pos}Replacement by actual motor output F_{Upstream pos1}，
I.e. F_{Upstream pos1}＝(M_{Counterweight}M_{Car})g+M_{Wire rope pos}gf, and when the initial balance coefficient is learned by the elevator selflearning, M can be known_{Wire rope pos}g＝(F_{Uplink pos}+F_{Downstream pos}F_{Up middle of}F_{Down middle})/2；f＝(F_{Downstream pos}F_{Uplink pos})/2；K＝(M_{Counterweight}M_{Car})/M_{Rated value}。
The actual equilibrium coefficient K can therefore be calculated from these four formulas, namely:
it should be noted that the influence of the difference in the wire rope gravity needs to be considered when the elevator ascends, so the calculation of the actual balance coefficient for each position when the elevator ascends can be performed in the above manner.
When the elevator is descending at a stable speed and the running direction of the car is descending, the method can be based on the formula:
F_{downstream pos}＝(M_{Counterweight}M_{Car})g+M_{Wire rope pos}g+f
To determine the actual motor output of the elevator at the current position, i.e. the second theoretical motor output F in the formula_{Downstream pos}Replacement by actual motor output F_{Downstream pos1}，
I.e. F_{Downstream pos1}＝(M_{Counterweight}M_{Car})g+M_{Wire rope pos}g + f, and calculating by adopting a mode of calculating the actual balance coefficient K of the elevator when the elevator ascends, and obtaining the actual balance coefficient K of the current position when the elevator descends, namely:
and after obtaining each actual balance coefficient, it is also necessary to detect whether each obtained actual balance coefficient matches with a preset value range in real time, and execute different operations according to different matching results. The preset value range can be any value range preset by a user, such as 0.40.5. And when the calculated actual balance coefficient is between 0.4 and 0.5, the actual balance coefficient is considered to be matched with the preset value range, and if the calculated actual balance coefficient is not between 0.4 and 0.5, the actual balance coefficient is considered to be not matched with the preset value range.
And step S40, if a target balance coefficient which is not matched with a preset value range exists in each actual balance coefficient, performing early warning processing.
When the target balance coefficient which is not matched with the preset value range exists in each actual balance coefficient through judgment, early warning processing can be directly carried out to inform a user that the balance coefficient of the current elevator is abnormal, and if the target balance coefficient does not exist, early warning cannot be carried out.
In addition, the following description will exemplify the principle of detecting the actual balance coefficient of the elevator on line in this embodiment to assist understanding.
For example, as shown in fig. 5, when the detection of the balance coefficient of the elevator is started, it is necessary to determine that the elevator is in an empty running state, that is, whether the car is in an empty running state is detected, if so, the constant speed of the elevator is recorded, the motor output at the corresponding position is recorded, the balance coefficient is calculated according to the motor output to obtain the actual balance coefficient of the current position, whether the actual balance coefficient is matched with the preset value range is detected, and if not, the early warning processing is performed or a corresponding protection strategy is executed.
In the embodiment, theoretical motor output at different positions when a car of the elevator runs in an idle load is determined, an initial balance coefficient is calculated according to the theoretical motor output, and the elevator runs according to the initial balance coefficient; detecting whether the lift car is in an idle running state or not in real time; if yes, acquiring actual motor output corresponding to the lift car at different positions, calculating actual balance coefficients corresponding to the actual motor output, and detecting whether the actual balance coefficients are matched with a preset value range in real time; and if a target balance coefficient which is not matched with a preset value range exists in each actual balance coefficient, performing early warning processing. The initial balance coefficients are calculated according to the theoretical motor output at different positions when the lift car of the elevator runs in an idle load mode, and the elevator runs according to the initial balance coefficients, so that the phenomenon that a heavy object needs to be added manually and then the balance coefficients are calculated in the prior art is avoided, and after the elevator runs according to the initial balance coefficients, when the lift car is detected to be in an idle load running state in real time, the actual balance coefficients are calculated according to the actual motor output corresponding to the lift car at different positions, so that the realtime online monitoring of the balance coefficients of the elevator can be realized, early warning processing is timely carried out when target balance coefficients which are not matched with a preset value range exist, unreasonable balance coefficients caused by factors such as excessive decoration, maintenance and the like are effectively prevented, and the efficiency of detecting the balance coefficients of the elevator is improved.
Further, based on the above embodiment of the present invention, another embodiment of the method for detecting an elevator balance coefficient according to the present invention is provided, in this embodiment, in step S30 in the above embodiment, a refinement of the step of acquiring actual motor outputs of the car at different positions and calculating an actual balance coefficient corresponding to each of the actual motor outputs includes:
step a, detecting the running position of the car in real time, and if the running position is in the middle of all the running positions of the car, acquiring the actual motor output corresponding to the middle of the car and the load force corresponding to the rated load capacity of the car;
in the embodiment, after the cage is determined to be in the noload running state, the running position of the cage needs to be checked in real time, the balance coefficient of the cage at each running position is calculated, and the balance coefficient calculation at the middle position can be avoided due to the particularity of the middle position of the cage. And when calculating the actual balance coefficient, can detect whether the operating position of car is in the intermediate position (being middle floor) of all operating positions of car, when being in the intermediate position, can neglect the wire rope weight difference, and the default is that wire rope weight difference is 0. At the moment, the actual motor output corresponding to the car at the middle position needs to be acquired (including F)_{Upstream pos1}And F_{Downstream pos1}Wherein when the car is in the intermediate position, F is set_{Upstream pos1}Value of F_{Uplink 1}Will F_{Downstream pos1}Value of F_{Downlink 1}) And rated load capacity M of the car_{Rated value}Corresponding load force M_{Rated value}g. Wherein the content of the first and second substances,
F_{uplink 1}＝(M_{Counterweight}M_{Car})gf；
F_{Downlink 1}＝(M_{Counterweight}M_{Car})g+f。
And b, calculating an actual balance coefficient corresponding to the middle position according to the theoretical motor output of the lift car at the middle position, the actual motor output and the load weight.
After the actual motor output corresponding to the middle position is obtained, the theoretical motor output of the lift car at the middle position needs to be obtained, namely the corresponding theoretical motor output is obtained according to the actual running direction of the lift car at the middle position, and the actual balance coefficient of the lift car at the middle position is calculated according to the obtained theoretical motor output, the actual motor output and the load weight.
In the embodiment, when the running position of the car is determined to be at the middle position, the actual balance coefficient corresponding to the middle position is calculated according to the theoretical motor output, the actual motor output and the load force of the middle position, so that the accuracy of the calculated actual balance coefficient is guaranteed.
Further, the step of calculating an actual balance coefficient corresponding to the intermediate position according to the theoretical motor output of the car at the intermediate position, the actual motor output and the load force comprises:
c, detecting the running direction of the lift car at the middle position, and if the running direction of the lift car at the middle position is an ascending direction, calculating the motor output of the lift car at the middle position according to the theoretical motor output of the lift car at the middle position;
when calculating the actual balance coefficient of the car at the middle position, the running direction of the car at the middle position needs to be detected, if the running direction of the middle position is upward, the parameters of the car during selflearning of the balance coefficient need to be obtained, namely, the first theoretical motor output required by the motor when the car is upward at the middle position and the second theoretical motor output required by the motor when the car is downward at the middle position are obtained, the middle position motor output of the car at the middle position is calculated according to the first theoretical motor output and the second theoretical motor output, namely, the middle position motor output of the car at the middle position is calculated according to the first theoretical motor output and the second theoretical motor output
F_{Up middle of}＝(M_{Counterweight}M_{Car}) gF and F_{Down middle}＝(M_{Counterweight}M_{Car})g+f
These two equations calculate the intermediate friction force F, i.e. F ═ F (F)_{Down middle}F_{Up middle of})/2. And the theoretical motor output of the lift car at the middle position comprises a first theoretical motor output and a second theoretical motor output.
And d, determining a middle balance coefficient calculation formula according to the actual motor output, the middle position motor output, the initial balance coefficient of the car at the middle position and the load weight, and calculating the actual balance coefficient corresponding to the middle position based on the middle balance coefficient calculation formula.
And then determining a middle balance coefficient calculation formula according to the actual motor output, the middle position motor output, the initial balance coefficient of the lift car at the middle position and the load weight, and calculating the actual balance coefficient of the lift car when the lift car moves upwards at the middle position according to the middle balance coefficient calculation formula. Namely, it is
That is, when calculating the actual balance coefficient when the middle position goes upward, the calculation is carried out by completely neglecting the weight difference of the steel wire rope.
And when the running direction of the middle position is downlink, the output of the motor at the middle position also needs to be obtained, and the same method is adopted for calculation to obtain the corresponding actual balance coefficient in the downlink. Namely, it is
In this embodiment, when it is determined that the running direction of the car at the middle position is an upward direction, the middle friction force is calculated first, then a middle balance coefficient calculation formula is determined according to the middle position motor output force, the actual motor output force, the initial balance coefficient and the load weight, and an actual balance coefficient corresponding to the middle position is calculated according to the middle balance coefficient calculation formula, so that the accuracy of the obtained actual balance coefficient is ensured.
Further, after the step of detecting the operating position of the car in real time, the method comprises the following steps:
step f, if the running position of the car is at other positions except the middle position in all the running positions of the car, acquiring the actual motor output corresponding to the other positions of the car and the load force corresponding to the rated load capacity of the car;
when the running position of the car is found through judgmentThe method is also required to obtain the actual motor output and the rated load capacity M of the car corresponding to other positions of the car when the actual balance coefficients of other positions are calculated, wherein the actual motor output and the rated load capacity M of the car are arranged at other positions except the middle position in all the running positions of the car_{Rated value}Carrying force M_{Rated value}g. Wherein, different actual motor output forces are obtained according to different running directions of the car, if the car goes upwards, the actual motor output forces are obtained
F_{Uplink pos}＝(M_{Counterweight}M_{Car})g+M_{Wire rope pos}gf; when the car goes down, F_{Downstream pos}＝(M_{Counterweight}M_{Car})g+M_{Wire rope pos}g+f。
And g, acquiring theoretical motor output of the car at other positions, calculating a difference between the actual motor output and the theoretical motor output, and calculating actual balance coefficients corresponding to other positions according to the difference and initial balance coefficients corresponding to other positions of the car.
And then theoretical motor output of the car at other positions is obtained, and the difference between the actual motor output and the theoretical motor output is calculated. It should be noted that, when calculating the difference, only the difference in the same operation direction needs to be calculated, that is, if the car is moving upwards, the difference between the actual motor output of the upward movement of the car and the theoretical motor output of the upward movement of the car is calculated. And if the lift car moves downwards, calculating the difference value between the actual motor output force of the downward movement of the lift car and the theoretical motor output force of the downward movement of the lift car. And after the difference value is obtained through calculation, the actual balance coefficients corresponding to other positions can be calculated according to the difference value and the initial balance coefficients corresponding to the car at other positions.
In this embodiment, when the running position of the car is determined to be other positions, the actual balance coefficient is calculated according to the difference between the actual motor output and the theoretical motor output, the load force and the initial balance coefficient corresponding to other positions, so that the accuracy of the obtained actual balance coefficient is ensured.
Further, the step of calculating the actual balance coefficient corresponding to the other position according to the difference value, the load capacity and the initial balance coefficient corresponding to the car at the other position includes:
h, detecting whether the running direction of the car at the other positions is an ascending direction;
when calculating the actual balance coefficients corresponding to other positions, the running direction of the car at the moment needs to be detected, if the running direction of the car at other positions is an upward direction, parameters related to the upward direction of the car need to be determined, and if the running direction of the car at other positions is a downward direction, parameters related to the downward direction of the car need to be determined. And then carrying out balance coefficient calculation.
Step k, if yes, determining a new balance calculation formula of the car at other positions according to the weight difference of the steel wire ropes of the car at other positions, the load capacity and the initial balance coefficients of the car at other positions;
when the running direction of the car at other positions is found to be ascending through judgment, the gravity difference of the steel wire ropes of the car at other positions needs to be acquired, namely M_{Wire rope pos}g＝(F_{Uplink pos}+F_{Downstream pos}F_{Up middle of}F_{Down middle}) And/2, acquiring the friction force of the car at other positions, namely F ═ F_{Downstream pos}F_{Uplink pos}) (M) initial balance coefficient K of the car at other positions_{Counterweight}M_{Car})/M_{Rated value}And calculating to obtain a new balance calculation formula of the lift car at other positions according to the weight difference of the steel wire ropes, the load weight and the initial balance coefficient, namely
And m, calculating the actual balance coefficients corresponding to the other positions according to the difference value and the new balance calculation formula.
According to the difference F_{Upstream pos1}F_{Uplink pos}Initial balance coefficient K and new balance calculation formula of car at other positionsAnd calculating the actual balance coefficients corresponding to other positions, namely calculating the actual balance coefficients according to the new balance calculation formula.
In the embodiment, when the running direction of the car at other positions is determined to be the ascending direction, the new balance calculation formula is determined, and the actual balance coefficient is calculated according to the new balance calculation formula, so that the accuracy of the calculated actual balance coefficient is guaranteed.
Further, before the step of providing the cage with a difference in the wire rope gravity at the other position, the method comprises the following steps:
n, acquiring the output of an uplink theoretical motor when the lift car ascends at other positions and the output of a downlink theoretical motor when the lift car descends at other positions;
in this embodiment, the method for obtaining the difference in the gravity of the steel wire rope of the car at other positions may be to obtain the theoretical motor output when the car goes upward at other positions, that is, the theoretical motor output when the car goes upward at other positions, and the obtaining of the theoretical motor output may be to obtain the first theoretical motor output when the elevator performs selflearning, and use the first theoretical motor output as the theoretical motor output when the elevator performs selflearning. And the theoretical motor output when the lift car descends at other current positions, namely the descending theoretical motor output, is obtained in the same way.
And p, acquiring the theoretical motor output sum value when the lift car runs at the middle position, calculating a first sum value between the uplink theoretical motor output and the downlink theoretical motor output, and calculating the steel wire rope gravity difference of the lift car at other positions according to the theoretical motor output sum value and the first sum value.
Meanwhile, when the selflearning balance coefficient of the elevator is carried out, the theoretical motor output sum value (F) when the elevator car runs at the middle position (including ascending and descending) is calculated_{Up middle of}+F_{Down middle}＝2(M_{Counterweight}M_{Car}) g, calculating the sum value between the output of the upstream theoretical motor and the output of the downstream theoretical motor, namely a first sum value, and calculating the gravity difference of the steel wire ropes of the elevator car at other positions, namely M, according to the sum value of the output of the theoretical motor and the first sum value_{Wire rope pos}g＝(F_{Uplink is carried outpos}+F_{Downstream pos}F_{Up middle of}F_{Down middle})/2。
In the embodiment, the gravity difference of the steel wire rope is determined according to the theoretical motor output sum value when the lift car runs at the middle position and the first sum value between the uplink theoretical motor output and the downlink theoretical motor output, so that the accuracy of the obtained gravity difference of the steel wire rope is guaranteed.
Further, after the step of detecting whether the running direction of the car at the other position is upward, the method comprises the following steps:
step q, if the running direction of the car at the other positions is descending, obtaining the theoretical motor output and value when the car runs at the middle position;
when the running direction of the car at other positions is found to be downward through judgment, the theoretical motor output and the value when the car runs at the middle position need to be determined when the elevator performs selflearning of the balance coefficient, and the obtaining mode can be the same as that when the running direction of the car at other positions is upward.
W, determining the latest balance calculation formula of the car at other positions according to the theoretical motor output sum value, the friction force of the car at other positions and the initial balance coefficient of the car at other positions;
after the theoretical motor output and the theoretical motor output and the elevator output and the theoretical motor output and the theoretical motor output and the theoretical motor output and the theoretical output of the other positions of:
and v, calculating actual balance coefficients corresponding to other positions according to the difference, the initial balance coefficients of the car at other positions and the latest balance calculation formula.
According to the calculated difference F_{Downstream pos1}F_{Downstream pos}Initiation of car at other positionsAnd calculating the actual balance coefficient corresponding to other positions by the balance coefficient K and the latest balance calculation formula, namely calculating according to the following formula.
In the embodiment, when the running direction of the car at other positions is determined to be descending, the latest balance calculation formula is determined, and the actual balance coefficient is calculated according to the latest balance calculation formula, so that the accuracy of the calculated actual balance coefficient is guaranteed.
Referring to fig. 3, the present invention further provides an elevator balance coefficient detection device, in this embodiment, the elevator balance coefficient detection device includes:
the determining module A10 is used for determining theoretical motor output at different positions when a car of the elevator runs in an idle load mode, calculating an initial balance coefficient according to the theoretical motor output, and running the elevator according to the initial balance coefficient;
the detection module A20 is used for detecting whether the car is in an idle running state in real time;
the calculation module A30 is used for acquiring actual motor output corresponding to the car at different positions, calculating actual balance coefficients corresponding to the actual motor output and detecting whether the actual balance coefficients are matched with a preset value range in real time if the actual motor output is the same as the actual motor output;
and the early warning module A40 is used for performing early warning processing if a target balance coefficient which is not matched with a preset value range exists in each actual balance coefficient.
Optionally, the detecting module a20 is further configured to:
detecting the running position of the car in real time, and if the running position is in the middle of all the running positions of the car, acquiring the actual motor output corresponding to the middle of the car and the load force corresponding to the rated load capacity of the car;
and calculating an actual balance coefficient corresponding to the middle position according to the theoretical motor output of the car at the middle position, the actual motor output and the load weight.
Optionally, the detecting module a20 is further configured to:
detecting the running direction of the car at the middle position, and if the running direction of the car at the middle position is an ascending direction, calculating the motor output of the car at the middle position according to the theoretical motor output of the car at the middle position;
and determining a middle balance coefficient calculation formula according to the actual motor output, the middle position motor output, the initial balance coefficient of the car at the middle position and the load weight, and calculating an actual balance coefficient corresponding to the middle position based on the middle balance coefficient calculation formula.
Optionally, the detecting module a20 is further configured to:
if the running positions of the car are at other positions except the middle position among all the running positions of the car, acquiring the actual motor output corresponding to the other positions of the car and the load force corresponding to the rated load capacity of the car;
and obtaining theoretical motor output of the car at other positions, calculating a difference value between the actual motor output and the theoretical motor output, and calculating actual balance coefficients corresponding to other positions according to the difference value, the load weight and initial balance coefficients corresponding to other positions of the car.
Optionally, the detecting module a20 is further configured to:
detecting whether the running direction of the car at the other positions is an ascending direction;
if so, determining a new balance calculation formula of the car at the other positions according to the weight difference of the steel wire ropes of the car at the other positions, the weight load of the car at the other positions and the initial balance coefficients of the car at the other positions;
and calculating actual balance coefficients corresponding to the other positions according to the difference value and the new balance calculation formula.
Optionally, the detecting module a20 is further configured to:
acquiring the output of an uplink theoretical motor when the car ascends at other positions and the output of a downlink theoretical motor when the car descends at other positions;
and acquiring theoretical motor output and value when the lift car runs at a middle position, calculating a first sum value between the uplink theoretical motor output and the downlink theoretical motor output, and calculating the steel wire rope gravity difference of the lift car at other positions according to the theoretical motor output sum value and the first sum value.
Optionally, the detecting module a20 is further configured to:
if the running direction of the car at the other positions is descending, acquiring the theoretical motor output and value when the car runs at the middle position;
determining the latest balance calculation formula of the car at other positions according to the theoretical motor output and the friction force of the car at other positions and the initial balance coefficients of the car at other positions;
and calculating actual balance coefficients corresponding to the other positions according to the difference value and the latest balance calculation formula.
The invention also provides an elevator balance coefficient detection device, which comprises: a memory, a processor, and an elevator balance coefficient detection program stored on the memory:
the processor is used for executing the elevator balance coefficient detection program to realize the steps of the elevator balance coefficient detection method.
The present invention also provides a computer storage medium having one or more programs stored thereon that are also executable by one or more processors for performing the steps of the embodiments of the elevator balance coefficient detection method described above.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a nonexclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The abovementioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The elevator balance coefficient detection method is characterized by comprising the following steps:
determining theoretical motor output at different positions when a lift car of the elevator runs in a noload mode, calculating an initial balance coefficient according to the theoretical motor output, and running the elevator according to the initial balance coefficient;
detecting whether the lift car is in an idle running state or not in real time;
if so, acquiring actual motor output corresponding to the car at different positions, calculating actual balance coefficients corresponding to the actual motor output, and detecting whether the actual balance coefficients are matched with a preset value range or not in real time, wherein if the running position of the car is at other positions except the middle position among all the running positions of the car, acquiring actual motor output corresponding to the car at other positions, acquiring theoretical motor output of the car at other positions, and calculating a difference value between the actual motor output and the theoretical motor output; if the running direction of the car at the other positions is descending, acquiring the theoretical motor output and value when the car runs at the middle position; determining the latest balance calculation formula of the car at other positions according to the theoretical motor output and the friction force of the car at other positions and the initial balance coefficients of the car at other positions; calculating actual balance coefficients corresponding to the other positions according to the latest balance calculation formula and the difference value;
and if a target balance coefficient which is not matched with a preset value range exists in each actual balance coefficient, performing early warning processing.
2. The method of claim 1, wherein the step of obtaining actual motor outputs of the car at different locations and calculating the actual balance coefficients for each of the actual motor outputs comprises:
detecting the running position of the car in real time, and if the running position is in the middle of all the running positions of the car, acquiring the actual motor output corresponding to the middle of the car and the load force corresponding to the rated load capacity of the car;
and calculating an actual balance coefficient corresponding to the middle position according to the theoretical motor output of the car at the middle position, the actual motor output and the load weight.
3. The method of claim 2, wherein the step of calculating the actual balance coefficient corresponding to the intermediate position based on the theoretical motor output, the actual motor output, and the weight loading capacity of the car at the intermediate position comprises:
detecting the running direction of the car at the middle position, and if the running direction of the car at the middle position is an ascending direction, calculating the motor output of the car at the middle position according to the theoretical motor output of the car at the middle position;
and determining a middle balance coefficient calculation formula according to the actual motor output, the middle position motor output, the initial balance coefficient of the car at the middle position and the load weight, and calculating an actual balance coefficient corresponding to the middle position based on the middle balance coefficient calculation formula.
4. The method of claim 2, wherein the step of detecting the travel position of the car in real time is followed by:
if the running position of the car is at other positions except the middle position in all the running positions of the car, acquiring the load force corresponding to the rated load capacity of the car;
and calculating actual balance coefficients corresponding to other positions according to the difference, the load force and the initial balance coefficients corresponding to the car at other positions.
5. The method for detecting the balance coefficient of the elevator as claimed in claim 4, wherein the step of calculating the actual balance coefficient corresponding to the other position according to the difference value, the load force and the initial balance coefficient corresponding to the car at the other position comprises:
detecting whether the running direction of the car at the other positions is an ascending direction;
if so, determining a new balance calculation formula of the car at the other positions according to the weight difference of the steel wire ropes of the car at the other positions, the weight load of the car at the other positions and the initial balance coefficients of the car at the other positions;
and calculating actual balance coefficients corresponding to the other positions according to the difference value and the new balance calculation formula.
6. The method of claim 5, wherein the step of determining the difference in wire rope gravity of the car at the other location is preceded by the step of:
acquiring the output of an uplink theoretical motor when the car ascends at other positions and the output of a downlink theoretical motor when the car descends at other positions;
and acquiring theoretical motor output and value when the lift car runs at a middle position, calculating a first sum value between the uplink theoretical motor output and the downlink theoretical motor output, and calculating the steel wire rope gravity difference of the lift car at other positions according to the theoretical motor output sum value and the first sum value.
7. An elevator balance coefficient detection device, characterized in that the elevator balance coefficient detection device comprises:
the determining module is used for determining theoretical motor output at different positions when a lift car of the elevator runs in a noload mode, calculating an initial balance coefficient according to the theoretical motor output, and running the elevator according to the initial balance coefficient;
the detection module is used for detecting whether the lift car is in an idle running state in real time;
the calculation module is used for acquiring actual motor output corresponding to the car at different positions, calculating actual balance coefficients corresponding to the actual motor output, and detecting whether the actual balance coefficients are matched with a preset value range or not in real time, wherein if the running position of the car is at other positions except the middle position in all the running positions of the car, the actual motor output corresponding to the car at other positions is acquired, theoretical motor output of the car at other positions is acquired, and a difference value between the actual motor output and the theoretical motor output is calculated; if the running direction of the car at the other positions is descending, acquiring the theoretical motor output and value when the car runs at the middle position; determining the latest balance calculation formula of the car at other positions according to the theoretical motor output and the friction force of the car at other positions and the initial balance coefficients of the car at other positions; calculating actual balance coefficients corresponding to the other positions according to the latest balance calculation formula and the difference value;
and the early warning module is used for carrying out early warning processing if a target balance coefficient which is not matched with a preset value range exists in each actual balance coefficient.
8. An elevator, characterized in that the elevator comprises: memory, a processor and an elevator balance coefficient detection program stored on the memory and executable on the processor, the elevator balance coefficient detection program when executed by the processor implementing the steps of the elevator balance coefficient detection method of any of claims 1 to 6.
9. A computer storage medium, characterized in that the computer storage medium has stored thereon an elevator balance coefficient detection program which, when executed by a processor, implements the steps of the elevator balance coefficient detection method according to any one of claims 1 to 6.
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CN102689826A (en) *  20120531  20120926  广州日滨科技发展有限公司  Method and system for detecting balance coefficient of elevator on basis of frequency converter 
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