CN112456269B - Intelligent braking system - Google Patents
Intelligent braking system Download PDFInfo
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- CN112456269B CN112456269B CN202011338358.7A CN202011338358A CN112456269B CN 112456269 B CN112456269 B CN 112456269B CN 202011338358 A CN202011338358 A CN 202011338358A CN 112456269 B CN112456269 B CN 112456269B
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- brake
- brake control
- elevator
- braking
- speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/02—Control systems without regulation, i.e. without retroactive action
- B66B1/06—Control systems without regulation, i.e. without retroactive action electric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3415—Control system configuration and the data transmission or communication within the control system
- B66B1/3446—Data transmission or communication within the control system
- B66B1/3461—Data transmission or communication within the control system between the elevator control system and remote or mobile stations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3476—Load weighing or car passenger counting devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0037—Performance analysers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mechanical Engineering (AREA)
- Elevator Control (AREA)
Abstract
The invention discloses an intelligent brake system, which comprises: the speed detection device is configured on the elevator car and used for acquiring the running speed of the elevator car in real time; the weighing device is configured at the bottom of the elevator car and used for acquiring the weighing weight of the elevator car; the brake control device is configured on the elevator car, is electrically connected with the speed detection device, the weighing device and the elevator control system, and is used for generating a brake control command corresponding to the weighing weight based on the running speed; and the brake devices are arranged on two sides of the elevator car and are matched with the guide rails, and the brake devices are electrically connected with the brake control device and used for executing corresponding brake operation based on the brake control command. The intelligent braking system executes braking operation according to the actual running condition of the elevator, can brake and brake in time when the elevator is abnormal, effectively improves braking force, guarantees personal safety of passengers, adjusts braking force according to the number of the passengers to control the elevator car to stop slowly, and improves user experience.
Description
Technical Field
The invention relates to the technical field of elevator control, in particular to an intelligent brake system.
Background
Elevators are commonly used in various buildings as indoor vehicles commonly used in cities at present, and the most commonly used elevator is a traction type elevator. The traction type elevator lifts the car by means of friction force between the steel wire rope and the traction sheave. As the traction sheave is worn, the traction capacity is changed and further a slipping accident occurs.
In the prior art, in order to prevent the elevator from slipping, the brake of the elevator is used as braking force, and the elevator is braked by braking the elevator main machine.
Firstly, the braking force (traction force) of the elevator is related to the weight difference between the elevator car and the counterweight, and after the elevator is installed, the weight difference between the elevator car and the counterweight may be increased due to the secondary decoration of the elevator car by a user, so that the braking force is insufficient; secondly, in the elevator maintenance process, maintenance personnel can reduce the braking force due to excessive grease on the traction force caused by improper maintenance, and the sliding risk can also be caused; thirdly, after the elevator steel wire rope is used for a long time, strand breakage may occur, so that if the elevator stops immediately after sliding, the steel wire rope may be broken, and further the car falls.
Furthermore, although the elevator is further provided with a protection device such as a speed limiting clamp, in the emergency braking process of the elevator, the personal safety of passengers can be threatened by instant rapid parking, and the user experience is greatly reduced.
Disclosure of Invention
In order to solve the technical problems that in the prior art, when emergency braking is performed on an elevator, timely braking cannot be performed, the braking force is insufficient, too fast braking reaction causes passenger injury, and user experience is low, the embodiment of the invention provides the intelligent braking system.
In order to achieve the above object, an embodiment of the present invention provides an intelligent braking system, where the braking system includes: the speed detection device is configured on the elevator car and used for acquiring the running speed of the elevator car in real time; the weighing device is configured at the bottom of the elevator car and used for acquiring the weighing weight of the elevator car; a brake control device, which is disposed on the elevator car, electrically connected to the speed detection device, the weighing device, and an elevator control system, and configured to generate a brake control command corresponding to the weighing weight based on the operating speed; and the brake devices are arranged on two sides of the elevator car and are matched with the guide rails, and the brake devices are electrically connected with the brake control device and used for executing corresponding brake operation based on the brake control command.
Preferably, the brake device is any one of a hydraulic band-type brake device or an electromagnetic brake device, and the clamping force of the brake device is adjustable.
Preferably, the brake control device generates a corresponding brake control command based on the running speed and the weighing weight, and includes: obtaining a preset rated speed from the elevator control system; judging whether the running speed is greater than the preset rated speed or not; and under the condition that the running speed is greater than the preset rated speed, generating a corresponding brake control instruction based on the weighing weight, wherein the brake control instruction is related to the clamping force of the brake device.
Preferably, the generating a corresponding brake control command based on the weighing weight includes: acquiring a preset braking deceleration curve and the car weight of the elevator car; obtaining a clamping force corresponding to the preset brake deceleration curve based on the car weight, the weighed weight, and the operating speed; and generating a corresponding brake control command based on the clamping force.
Preferably, the brake control device is further configured to: judging whether the elevator control system sends an operation control instruction or not; under the condition that the elevator control system sends out the operation control command, generating a corresponding brake control command based on the operation speed and the weighing weight; and under the condition that the elevator control system does not send the operation control command, judging whether the operation speed is greater than zero, and under the condition that the operation speed is greater than zero, generating a corresponding brake control command.
Preferably, the braking system further includes a door closing in-place detection device and a door blocking detection device, the door closing in-place detection device is arranged on the door motor and used for acquiring door closing in-place information, the door blocking detection device is arranged on two sides of the car door and used for acquiring blocking information between the car doors, and the braking control device is further configured to: judging whether door closing in-place information and the shielding information are acquired; generating a brake control instruction corresponding to the weighing weight based on the running speed under the condition that the door closing in-place information is obtained but the shielding information is not obtained; and under the condition that the door closing in-place information is not acquired and/or the shielding information is acquired, judging whether the running speed is greater than zero, and under the condition that the running speed is greater than zero, generating a corresponding brake control instruction.
Preferably, the braking system further includes deceleration switches respectively disposed at the top and bottom of the hoistway, for generating deceleration control information, and the braking control apparatus is further configured to: judging whether the deceleration control information is acquired or not; judging whether the running speed is reduced or not under the condition of acquiring the deceleration control information; and generating a corresponding brake control command under the condition that the running speed is not reduced.
Preferably, the braking system further includes limit switches respectively disposed at the top and the bottom of the hoistway, and configured to generate limit position control information, the limit switch at the top of the hoistway is located above the speed reduction switch, the limit switch at the bottom of the hoistway is located below the speed reduction switch, and the braking control device is further configured to: judging whether the limit bit control information is acquired or not; and under the condition of acquiring the limit control information, judging whether the running speed is greater than zero, and under the condition that the running speed is greater than zero, generating a corresponding brake control instruction.
Preferably, the braking system further comprises a standby power supply, wherein the standby power supply is connected with the brake control device, the braking device and the external power supply and used for providing an emergency power supply for the brake control device and the braking device under the condition that the external power supply does not provide electric energy.
Preferably, the brake control device is further configured to: after the brake control command is generated, generating corresponding abnormal information; and feeding back the abnormal information to the elevator control system.
Through the technical scheme provided by the invention, the invention at least has the following technical effects:
through improving current elevator, dispose intelligent braking system on elevator car, according to the intelligent execution brake operation of the actual running condition of elevator, thereby can in time brake braking when having guaranteed that the elevator is unusual, the swift current ladder phenomenon that leads to not enough to the brake power has carried out the compensation of braking force, effectively improved braking force, passenger's personal safety has been ensured, adjust the brake power according to passenger's number simultaneously and slowly stop with control elevator car, avoid the huge impact force that the brake caused the passenger, user experience has been improved.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention and not to limit the embodiments of the invention. In the drawings:
FIG. 1 is a schematic structural diagram of an intelligent braking system according to an embodiment of the present invention;
fig. 2 is a flowchart of a specific implementation of generating a brake control command in the intelligent brake system according to the embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an intelligent braking system according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram of an intelligent braking system according to still another embodiment of the invention.
Description of the reference numerals
10 speed detection device 20 weighing device
30 brake control device 40 elevator control system
50 brake equipment 61 door closing in-place detection device
62 door shelters from detection device 70 speed reduction switch
80 limit switch
Detailed Description
In order to solve the technical problems that in the prior art, when emergency braking is performed on an elevator, timely braking cannot be performed, the braking force is insufficient, too fast braking reaction causes passenger injury, and user experience is low, the embodiment of the invention provides the intelligent braking system.
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
The terms "system" and "network" in embodiments of the present invention may be used interchangeably. The "plurality" means two or more, and in view of this, the "plurality" may also be understood as "at least two" in the embodiments of the present invention. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" generally indicates that the preceding and following related objects are in an "or" relationship, unless otherwise specified. In addition, it should be understood that the terms first, second, etc. in the description of the embodiments of the invention are used for distinguishing between the descriptions and are not intended to indicate or imply relative importance or order to be construed.
Referring to fig. 1, an embodiment of the present invention provides an intelligent braking system, where the braking system includes: the speed detection device 10 is configured on the elevator car and used for acquiring the running speed of the elevator car in real time; the weighing device 20 is arranged at the bottom of the elevator car and used for acquiring the weighing weight of the elevator car; a brake control device 30 disposed on the elevator car, electrically connected to the speed detection device 10, the weighing device 20, and the elevator control system 40, and configured to generate a brake control command corresponding to the weighing weight based on the operating speed; and the braking devices 50 are configured at two sides of the elevator car and are matched with the guide rails, and the braking devices 50 are electrically connected with the braking control device 30 and used for executing corresponding braking operation based on the braking control command.
In the embodiment of the present invention, the braking device 50 is any one of a hydraulic band-type brake device or an electromagnetic braking device, and the clamping force of the braking device is adjustable.
In a possible embodiment, the speed detecting device 10, the weighing device 20 and the brake control device 30 are all disposed at the bottom of the elevator car to improve the system integration of the intelligent brake system, and facilitate the production and installation, for example, in the embodiment of the present invention, the speed detecting device 10 is a speed sensor, the weighing device 20 is a pressure weighing sensor, and the brake control device 30 is a brake control board including a main control chip.
In practical application, when a passenger enters an elevator car, the weighing device 20 detects the current weighing weight in the elevator car, and when an elevator car door is closed, the value of the weighing weight is determined, at this time, the elevator runs in a hoistway, the speed detection device 10 detects the running speed of the elevator car in real time during running, and at a certain moment, the brake control device 30 determines that the running speed is greater than the rated running speed, for example, the brake control device 30 may be connected with an elevator control system through a traveling communication cable (not shown) to obtain the rated speed of the current elevator running. At this time, the brake control device 30 immediately generates a brake control instruction corresponding to the weighing weight, and sends the brake control instruction to the brake device 50, and the brake device 50 immediately executes a corresponding brake operation according to the brake control instruction, for example, immediately controls the brake devices 50 arranged on both sides of the car to perform a contracting brake operation on the guide rail, thereby implementing the brake operation on the elevator car.
In the embodiment of the invention, the special brake device 50 is arranged on the elevator car, the elevator car is abnormally monitored according to the actual running speed of the elevator car, and once the running speed of the elevator car is monitored to be abnormal, the elevator car is immediately braked, so that the elevator car is timely braked, and the personal safety of passengers is guaranteed; on the other hand, still above-mentioned brake control instruction is according to weighing weight and generating to can combine the passenger in the elevator car to generate the brake control instruction that corresponds, rather than adopting the brake control instruction of fixed dynamics, can effectively avoid because of the instantaneous brake to the great impact force that the passenger caused, avoid the passenger to take place accidents such as tumble injury in the elevator car, improve user experience.
Referring to fig. 2, in the embodiment of the present invention, the brake control device 30 generates a brake control command corresponding to the weighing weight based on the operating speed, including:
s301) acquiring a preset rated speed from the elevator control system;
s302) judging whether the running speed is greater than the preset rated speed or not;
s303) generating a corresponding brake control instruction based on the weighing weight under the condition that the running speed is greater than the preset rated speed, wherein the brake control instruction is related to the clamping force of the brake device.
Further, in this embodiment of the present invention, the generating a corresponding brake control command based on the weighed weight includes: acquiring a preset braking deceleration curve and the car weight of the elevator car; obtaining a clamping force corresponding to the preset brake deceleration curve based on the car weight, the weighed weight, and the operating speed; and generating a corresponding brake control command based on the clamping force.
In a possible embodiment, the brake control device 30 first obtains the preset rated speed of the elevator from the elevator control system 40 before the elevator runs, and determines whether the running speed of the elevator car is greater than the preset rated speed in real time during the elevator runs, and determines that the running speed of the elevator car is greater than the preset rated speed at a certain moment, so that the brake control command corresponding to the weighing weight is immediately generated.
First, a preset braking deceleration curve and a car weight of the elevator car may be obtained, for example, the preset braking deceleration curve is a correlation curve between clamping force and deceleration of the elevator car, at this time, the brake control device 30 obtains the total weight of the elevator car itself plus the current passenger according to the car weight and the weighing weight, so as to obtain a corresponding clamping force by combining the preset braking deceleration curve, and then generates a corresponding brake control command based on the clamping force.
In the embodiment of the invention, when the elevator car runs abnormally, the brake control instruction corresponding to the clamping force is generated according to the weight of the passenger in the elevator car, so that the elevator car can be slowly braked and stopped, instead of instantly stopping the elevator car by adopting the fixed contracting brake force in the prior art, the larger impact force on the passenger caused by instant stopping is effectively avoided, the passenger is prevented from falling into the elevator car, and other accidents are prevented, the personal safety of the passenger is effectively ensured, and the user experience is provided.
In the embodiment of the present invention, the brake control device 30 is further configured to: judging whether the elevator control system 40 sends an operation control command or not; generating a corresponding brake control command based on the running speed and the weighing weight if the elevator control system 40 issues the running control command; and under the condition that the elevator control system 40 does not send the operation control command, judging whether the operation speed is greater than zero or not, and under the condition that the operation speed is greater than zero, generating a corresponding brake control command.
In a possible embodiment, the elevator is parked in a flat zone and waits for passengers to enter the elevator, however, due to the fact that grease on a steel wire rope is too much due to negligence of maintenance personnel, when the passengers enter the elevator, the elevator car slips, the brake control device 30 monitors that the elevator control system 40 does not send out an operation control command at the moment, and meanwhile, the operation speed of the elevator car is greater than zero at the moment, so that the current elevator car is determined to slip, a corresponding brake control command is immediately generated and sent to the brake device 50, and the brake device 50 immediately acts and tightens a guide rail to fix the elevator car at the current position.
In the embodiment of the invention, the control running state and the actual running state of the elevator are compared and monitored in real time, the elevator slipping phenomenon of the elevator can be effectively found, and corresponding control measures are taken in time when the elevator slipping phenomenon occurs, so that the occurrence of slipping or falling accidents of an elevator car is avoided, braking force can be compensated for the abnormal situations such as insufficient band-type brake force of a host machine band-type brake or wire rope slipping, and the personal safety of passengers is ensured.
Referring to fig. 3, in the embodiment of the present invention, the brake system further includes a door-closing-in-place detection device 61 and a door-blocking detection device 62, the door-closing-in-place detection device is disposed on the door motor and is used for acquiring door-closing-in-place information, the door-blocking detection device is disposed on two sides of the car door and is used for acquiring blocking information between the car doors, and the brake control device 30 is further configured to: judging whether door closing in-place information and the shielding information are acquired; generating a brake control instruction corresponding to the weighing weight based on the running speed under the condition that the door closing in-place information is obtained but the shielding information is not obtained; and under the condition that the door closing in-place information is not acquired and/or the shielding information is acquired, judging whether the running speed is greater than zero, and under the condition that the running speed is greater than zero, generating a corresponding brake control instruction.
In one possible embodiment, the door-closing-position detecting device 61 is a door-closing-position detecting switch, the door-shielding detecting device 62 may be a light curtain, in the process of monitoring the operation of the elevator, the brake control device 30 monitors whether the door-closing in-place information acquired by the door-closing in-place detection switch 61 and the shielding information acquired by the light curtain are acquired in real time, generates a brake control command corresponding to the weighing weight based on the operation speed only when the brake control device 30 acquires the door-closing in-place information and does not acquire the shielding information at the same time, when any condition of not acquiring door closing in-place information and acquiring shielding information is met, monitoring whether the running speed of the elevator car is greater than zero or not in real time, if the running speed of the elevator car is greater than zero at the moment, the elevator car is determined to have a slipping phenomenon, and therefore a corresponding brake control command is immediately generated.
In the embodiment of the invention, the elevator can only operate under the condition that the door of the elevator car is closed in place and no shielding object exists between the car doors, so the abnormal operation of the elevator car is judged by monitoring the door closing in-place information and the shielding information of the elevator car door, and corresponding braking operation is timely adopted when the elevator car has a car sliding phenomenon, thereby ensuring the personal safety of passengers.
Referring to fig. 4, in an embodiment of the present invention, the braking system further includes deceleration switches 70 respectively disposed at the top and the bottom of the hoistway, for generating deceleration control information, and the braking control device is further configured to: judging whether the deceleration control information is acquired or not; under the condition of acquiring the deceleration control information, judging whether the running speed is reduced or not; and generating a corresponding brake control command under the condition that the running speed is not reduced.
In an embodiment of the present invention, the braking system further includes limit switches 80 respectively disposed at the top and bottom of a hoistway, and is configured to generate limit position control information, the limit switch 80 at the top of the hoistway is located above the speed reduction switch 70, the limit switch 80 at the bottom of the hoistway is located below the speed reduction switch 70, and the brake control device 30 is further configured to: judging whether the limit bit control information is acquired or not; and under the condition of acquiring the limit control information, judging whether the running speed is greater than zero, and under the condition that the running speed is greater than zero, generating a corresponding brake control instruction.
In one possible embodiment, the speed reducing switch 70 and the limit switch 80 are connected with the elevator control system, the brake control device 30 monitors the abnormal operation condition of the elevator car according to the speed reducing control information of the speed reducing switch 70 and/or the limit position control information of the limit switch 80 during the monitoring process of the operation of the elevator car, during a certain run, the brake control device 30 obtains deceleration control information that the elevator car has started the deceleration switch 70 through the elevator monitoring system 40, and at this time, the brake control device 30 determines that the current operation speed of the elevator car is not reduced through the speed detection device 10, so that a corresponding brake control command is generated immediately, for example in the embodiment of the present invention, the running speed of the elevator car can be controlled to gradually decrease through the brake control command, so that the elevator slowly and smoothly stops at the target landing.
In the embodiment of the present invention, the braking system further includes a backup power source (not shown) connected to the brake control device 30, the brake device 50, and an external power source (not shown) for providing an emergency power to the brake control device 30 and the brake device 50 in case the external power source does not provide power.
In the embodiment of the invention, the independent standby power supply is provided for the braking system, so that the elevator car can be braked in time according to the abnormal condition of the elevator car under the condition that the external power supply is powered off, the personal safety of passengers is protected in time, and the user experience is improved.
In the embodiment of the present invention, the brake control device 30 is further configured to: after the brake control command is generated, generating corresponding abnormal information; the abnormality information is fed back to the elevator control system 40.
In a possible implementation manner, after the brake control instruction is generated, the brake control device 30 immediately generates corresponding abnormal information and feeds the abnormal information back to the elevator control system 40 in time, and the elevator control system 40 can immediately execute corresponding elevator control operation after acquiring the abnormal information, for example, immediately mark the elevator car as a fault state after the current car reaches the leveling position and prompt a passenger not to enter the current elevator car, and meanwhile, the elevator control system can also be connected with the cloud server in a wired or wireless communication manner and send warning information to a corresponding elevator maintenance worker or manager, so that the elevator is maintained or overhauled in time, the timeliness of monitoring and processing the elevator abnormity is greatly improved, and the personal safety of the passenger is guaranteed.
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications all belong to the protection scope of the embodiments of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention do not describe every possible combination.
In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.
Claims (8)
1. An intelligent braking system, characterized in that, braking system includes:
the speed detection device is configured on the elevator car and used for acquiring the running speed of the elevator car in real time;
the weighing device is configured at the bottom of the elevator car and used for acquiring the weighing weight of the elevator car;
a brake control device, which is disposed on the elevator car, electrically connected to the speed detection device, the weighing device, and an elevator control system, and configured to generate a brake control command corresponding to the weighing weight based on the operating speed;
the brake devices are configured on two sides of the elevator car and are matched with the guide rails, and the brake devices are electrically connected with the brake control device and used for executing corresponding brake operation based on the brake control command;
the brake control device generates a corresponding brake control instruction based on the running speed and the weighing weight, and comprises:
obtaining a preset rated speed from the elevator control system;
judging whether the running speed is greater than the preset rated speed or not;
under the condition that the running speed is greater than the preset rated speed, generating a corresponding brake control instruction based on the weighing weight, wherein the brake control instruction is related to the clamping force of the brake device;
the generating of the corresponding brake control command based on the weighing weight comprises:
acquiring a preset braking deceleration curve and the car weight of the elevator car;
obtaining a clamping force corresponding to the preset brake deceleration curve based on the car weight, the weighed weight, and the operating speed;
and generating a corresponding brake control command based on the clamping force.
2. The braking system of claim 1, wherein the braking device is a hydraulic band-type brake device or an electromagnetic braking device, and the clamping force of the braking device is adjustable.
3. The braking system of claim 1, wherein the brake control device is further configured to:
judging whether the elevator control system sends an operation control instruction or not;
under the condition that the elevator control system sends out the operation control command, generating a corresponding brake control command based on the operation speed and the weighing weight;
and under the condition that the elevator control system does not send the operation control command, judging whether the operation speed is greater than zero, and under the condition that the operation speed is greater than zero, generating a corresponding brake control command.
4. The braking system of claim 1, further comprising a door-closing-in-place detection device and a door-blocking detection device, wherein the door-closing-in-place detection device is disposed on the door motor and configured to obtain door-closing-in-place information, the door-blocking detection device is disposed on two sides of the car door and configured to obtain blocking information between the car doors, and the braking control device is further configured to:
judging whether door closing in-place information and the shielding information are acquired;
generating a brake control instruction corresponding to the weighing weight based on the running speed under the condition that the door closing in-place information is obtained but the shielding information is not obtained;
and under the condition that the door closing in-place information is not acquired and/or the shielding information is acquired, judging whether the running speed is greater than zero, and under the condition that the running speed is greater than zero, generating a corresponding brake control instruction.
5. The braking system of claim 1, further comprising deceleration switches disposed at a top and a bottom of the hoistway, respectively, for generating deceleration control information, the braking control device further configured to:
judging whether the deceleration control information is acquired or not;
judging whether the running speed is reduced or not under the condition of acquiring the deceleration control information;
and generating a corresponding brake control command under the condition that the running speed is not reduced.
6. The brake system according to claim 5, further comprising limit switches respectively provided at the top and bottom of a hoistway, for generating limit position control information, wherein the limit switch at the top of the hoistway is located above the speed reduction switch, and the limit switch at the bottom of the hoistway is located below the speed reduction switch, and wherein the brake control device is further configured to:
judging whether the limit bit control information is acquired or not;
and under the condition of acquiring the limit control information, judging whether the running speed is greater than zero, and under the condition that the running speed is greater than zero, generating a corresponding brake control instruction.
7. The braking system of claim 1, further comprising a backup power source connected to the brake control device, the braking device, and an external power source for providing emergency power to the brake control device and the braking device in the event that the external power source does not provide power.
8. The braking system of any one of claims 1 to 7, wherein the braking control device is further configured to:
after the brake control command is generated, corresponding abnormal information is generated;
and feeding back the abnormal information to the elevator control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| JPH07242377A (en) * | 1994-03-04 | 1995-09-19 | Hitachi Ltd | Elevator device |
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| CA2720505C (en) * | 2004-05-25 | 2013-01-29 | Mitsubishi Denki Kabushiki Kaisha | Safety device for an elevator |
| CN101920074B (en) * | 2010-08-10 | 2012-05-23 | 江苏大学 | High-rise escape machine and automatic control method for escape |
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| CN107651519A (en) * | 2017-09-19 | 2018-02-02 | 天津康途科技有限公司 | One kind detection elevator brake moment method |
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| DE3934492A1 (en) * | 1988-10-14 | 1990-04-19 | Kone Elevator Gmbh | Emergency braking device for lift cage - uses wedges cooperating with guide rail controlled to maintain uniform braking |
| CN1050527A (en) * | 1989-09-28 | 1991-04-10 | 三菱电机株式会社 | Brake device for elevator |
| US6325179B1 (en) * | 2000-07-19 | 2001-12-04 | Otis Elevator Company | Determining elevator brake, traction and related performance parameters |
| CN104583105A (en) * | 2012-08-22 | 2015-04-29 | 奥的斯电梯公司 | Elevator system using dynamic braking |
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