CN107128765B - Fault-tolerant control method and system for elevator in trapped state - Google Patents
Fault-tolerant control method and system for elevator in trapped state Download PDFInfo
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- CN107128765B CN107128765B CN201710442806.XA CN201710442806A CN107128765B CN 107128765 B CN107128765 B CN 107128765B CN 201710442806 A CN201710442806 A CN 201710442806A CN 107128765 B CN107128765 B CN 107128765B
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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
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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
- B66B5/021—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions the abnormal operating conditions being independent of the system
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- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention discloses a fault-tolerant control method and a fault-tolerant control system for an elevator in a trapped state. The invention carries out comprehensive decision according to the severity degree, the occurrence frequency and the number of the faults of the elevator, controls the output state of the elevator according to the proposed fault-tolerant control strategy and can effectively solve the secondary damage caused by people trapping of the elevator.
Description
Technical Field
The invention relates to the technical field of elevators, in particular to an elevator fault tolerance control method and system in a trapped state.
Background
An elevator is a vertical carrying device taking a motor as power, and is used for taking people or carrying goods in a multi-storey building. With the acceleration of urbanization, elevators have become indispensable means of transportation in human life.
At present, two main ways for acquiring elevator fault information are available: the elevator is checked and processed by a debugging tool in an elevator machine room, and the elevator is checked on a display screen of an elevator monitoring room (generally in a cell security room) by additionally arranging a wired/wireless monitoring tool but cannot be processed generally. And the elevator monitoring system also comprises some additional special equipment, the collected information is stored on the storage equipment by collecting the information of the running, maintenance and fault states of the elevator, and then the collected information on the storage equipment is displayed through the display screen. If the elevator is trapped by people and has a fault, the elevator is generally stopped immediately, a professional generally checks fault information on an upper computer room after the elevator arrives, then the elevator is powered off, a band-type brake is released, a barring is turned to a flat layer, a door is opened from the hall by using a special key for rescuing people, and the elevator is powered on again to recover to a normal state after the people are rescued and the fault condition is eliminated. Therefore, as long as the trouble of people trapping when the elevator is stopped occurs, at least two people are needed to directly operate mechanical parts to the machine room to save people, long time is needed, and secondary disasters are easily caused.
Disclosure of Invention
In view of the above, the present invention provides a fault tolerant control method and system for an elevator in a trapped state.
One of the purposes of the invention is realized by the following technical scheme that the fault tolerance control method of the elevator in the trapped state carries out comprehensive decision and outputs a control strategy according to the frequency of faults, the number of faults occurring simultaneously, the types of the faults and the consequences caused by the faults.
Further, the fault types include fault-tolerant states, semi-fault-tolerant states, and fault-intolerant states.
Further, the fault tolerant state includes a fault: the handling method of the fault-tolerant state comprises the following steps of communication fault calling outside, group control communication fault, abnormal door opening, abnormal emergency lighting, abnormal car lighting, overheating of a motor, signal loss in door closing position, action of an overload device, abnormal light curtain, adhesion of an inside call and adhesion of an outside call, wherein the handling method of the fault-tolerant state comprises the following steps: the treatment method comprises the following steps: the elevator does not stop and can be quickly leveled to the floor nearby.
Further, the semi-fault-tolerant state comprises a semi-fault-tolerant state I and a semi-fault-tolerant state II, the semi-fault-tolerant state I comprises the following steps of exceeding operation monitoring time, instantly disconnecting a hall door lock in operation, instantly disconnecting a safety loop in operation, instantly disconnecting a car door in operation, instantly disconnecting a control system, instantly disconnecting a driving system, instantly disconnecting an elevator position, instantly disconnecting a power supply, instantly disconnecting a temperature sensor, instantly disconnecting a micro leveling layer, overtime and abnormally repairing in operation, and the handling method of the semi-fault-tolerant state I comprises the following steps: the elevator is stopped immediately and then can be moved to a leveling position or a reset floor at a normal or corrected speed; the semi-fault-tolerant state II comprises simultaneous actions of an upper forced speed changing switch and a lower forced speed changing switch, abnormal speed, a re-leveling fault, abnormal door zone signals, a car communication fault, an acceleration overcurrent, a deceleration overcurrent, a constant speed overcurrent, motor overload, system overload, an output phase failure, an input phase failure, abnormal encoder frequency division signals, an upper limit disconnection in operation, a lower limit disconnection in operation, three continuous times of normal speed resetting errors, car position loss, a hoistway position signal error and a micro leveling sensor fault, and the handling method of the semi-fault-tolerant state II comprises the following steps: the elevator car stops immediately and can only go to the leveling position or the reset floor at the anti-leveling speed.
Further, the fault-intolerant state is: the handling method of the fault-tolerant state comprises the following steps of safety loop circuit breaking, hall door lock loop circuit breaking, car door lock circuit breaking, auxiliary microcomputer driving system failure, control system CPU failure, contactor feedback signal loss, input under-voltage, motor encoder abnormity, output short circuit, brake unit failure, error in five-time self-rescue starting operation and brake feedback signal circuit breaking, wherein the handling method of the fault-tolerant state comprises the following steps: the elevator car stops immediately and can only be reset in a manual intervention mode.
The second purpose of the invention is realized by the following technical proposal,
a fault-tolerant control system for elevator in trapped state is composed of a fault sampling module and a fault-tolerant control strategy module,
the fault acquisition module is used for acquiring the frequency of faults, the number of the faults occurring simultaneously and the types of the faults occurring simultaneously;
and the Ivory control strategy module carries out comprehensive decision and outputs a control strategy according to the frequency of faults, the number of faults occurring simultaneously, the types of the faults and the consequences caused by the faults.
Further, the fault types include fault-tolerant states, semi-fault-tolerant states, and fault-intolerant states.
Further, the fault tolerant state includes: the handling method of the fault-tolerant state comprises the following steps of communication fault calling outside, group control communication fault, abnormal door opening, abnormal emergency lighting, abnormal car lighting, overheating of a motor, signal loss in door closing position, action of an overload device, abnormal light curtain, adhesion of an inside call and adhesion of an outside call, wherein the handling method of the fault-tolerant state comprises the following steps: the elevator does not stop and can be quickly leveled to the floor nearby.
Further, the semi-fault-tolerant state comprises a semi-fault-tolerant state I and a semi-fault-tolerant state II, the semi-fault-tolerant state I comprises the following steps of exceeding operation monitoring time, instantly disconnecting a hall door lock in operation, instantly disconnecting a safety loop in operation, instantly disconnecting a car door in operation, instantly disconnecting a control system, instantly disconnecting a driving system, instantly disconnecting an elevator position, instantly disconnecting a power supply, instantly disconnecting a temperature sensor, instantly disconnecting a micro leveling layer, overtime and abnormally repairing in operation, and the handling method of the semi-fault-tolerant state I comprises the following steps: the elevator is stopped immediately and then can be moved to a leveling position or a reset floor at a normal or corrected speed; the semi-fault-tolerant state II comprises simultaneous actions of an upper forced speed changing switch and a lower forced speed changing switch, abnormal speed, a re-leveling fault, abnormal door zone signals, a car communication fault, an acceleration overcurrent, a deceleration overcurrent, a constant speed overcurrent, motor overload, system overload, an output phase failure, an input phase failure, abnormal encoder frequency division signals, an upper limit disconnection in operation, a lower limit disconnection in operation, three continuous times of normal speed resetting errors, car position loss, a hoistway position signal error and a micro leveling sensor fault, and the handling method of the semi-fault-tolerant state II comprises the following steps: the elevator car stops immediately and can only go to the leveling position or the reset floor at the anti-leveling speed.
Further, the fault-intolerant state is: the handling method of the fault-tolerant state comprises the following steps of safety loop circuit breaking, hall door lock loop circuit breaking, car door lock circuit breaking, auxiliary microcomputer driving system failure, control system CPU failure, contactor feedback signal loss, input under-voltage, motor encoder abnormity, output short circuit, brake unit failure, error in five-time self-rescue starting operation and brake feedback signal circuit breaking, wherein the handling method of the fault-tolerant state comprises the following steps: the elevator car stops immediately and can only be reset in a manual intervention mode.
The beneficial technical effects are as follows:
the comprehensive decision is made according to the severity, the occurrence frequency and the number of the faults of the elevator, the output state of the elevator is controlled according to the provided fault-tolerant control strategy, and the secondary damage caused by the trapping of the elevator can be effectively solved.
Drawings
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of an elevator fault tolerance control system;
fig. 2 is a block diagram of a control strategy.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings; it should be understood that the preferred embodiments are illustrative of the invention only and are not limiting upon the scope of the invention.
One of the purposes of the invention is realized by the following technical scheme that the fault tolerance control method of the elevator in the trapped state carries out comprehensive decision and outputs a control strategy according to the frequency of faults, the number of faults occurring simultaneously, the types of the faults and the consequences caused by the faults.
The invention overcomes the defect that the corresponding fault-tolerant state is determined according to the severity of the consequences caused by the fault singly. But fully considers the frequency of faults, the number of faults occurring simultaneously and the consequences caused by the faults to carry out comprehensive decision. A three-input single-output controller as shown in figure 2 is constructed,
where A is the input subset for a single fault, B is the input subset for the frequency of the fault, and C is the input subset for the number of faults. U is the controller output subset.
The control strategy is as follows:
where U1 represents a fault tolerant state, U2 represents a semi-fault tolerant state, and U3 represents a non-fault tolerant state.
B indicates the failure frequency, 0 indicates that the frequency is 0, 1 indicates that the frequency is low, and 2 indicates that the frequency is high.
C indicates the number of faults occurring simultaneously, 0 indicates that only one fault occurs, 1 indicates that 2 faults occur simultaneously, 2 indicates that only 3 faults occur, and 3 indicates that 4 faults occur simultaneously.
TABLE 1 Elevator trapped accident reason analysis and fault-tolerant processing strategy
Meanwhile, the invention also provides an elevator fault-tolerant control system in the trapped state, which comprises a fault sampling module and a fault-tolerant control strategy module, wherein the fault sampling module is used for collecting the frequency of faults, the number of the faults occurring at the same time and the types of the faults occurring; and the Ivory control strategy module carries out comprehensive decision and outputs a control strategy according to the frequency of faults, the number of faults occurring simultaneously, the types of the faults and the consequences caused by the faults.
The invention overcomes the defect that the corresponding fault-tolerant state is determined according to the severity of the consequences caused by the fault singly. But fully considers the frequency of faults, the number of faults occurring simultaneously and the consequences caused by the faults to carry out comprehensive decision. A three-input single-output controller as shown in fig. 2 is constructed.
Where A is the input subset for a single fault, B is the input subset for the frequency of the fault, and C is the input subset for the number of faults. U is the controller output subset.
The control strategy is as follows:
where U1 represents a fault tolerant state, U2 represents a semi-fault tolerant state, and U3 represents a non-fault tolerant state.
B indicates the failure frequency, 0 indicates that the frequency is 0, 1 indicates that the frequency is low, and 2 indicates that the frequency is high.
C indicates the number of faults occurring simultaneously, 0 indicates that only one fault occurs, 1 indicates that 2 faults occur simultaneously, 2 indicates that only 3 faults occur, and 3 indicates that 4 faults occur simultaneously.
TABLE 1 Elevator trapped accident reason analysis and fault-tolerant processing strategy
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it is apparent that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (2)
1. A fault-tolerant control method for an elevator in a trapped state is characterized by comprising the following steps: carrying out comprehensive decision making according to the frequency of faults, the number of faults occurring simultaneously, the types of the faults and the consequences caused by the faults, and outputting a control strategy;
the fault types comprise a fault-tolerant state, a semi-fault-tolerant state and a non-fault-tolerant state;
the fault-intolerant state is as follows: the handling method of the fault-tolerant state comprises the following steps of safety loop circuit breaking, hall door lock loop circuit breaking, car door lock circuit breaking, auxiliary microcomputer driving system failure, control system CPU failure, contactor feedback signal loss, input under-voltage, motor encoder abnormity, output short circuit, brake unit failure, error in five-time self-rescue starting operation and brake feedback signal circuit breaking, wherein the handling method of the fault-tolerant state comprises the following steps: the elevator express stops immediately and can only be reset in a manual intervention mode;
the handling method of the fault-tolerant state comprises the following steps of communication fault calling outside, group control communication fault, abnormal door opening, abnormal emergency lighting, abnormal car lighting, overheating of a motor, signal loss in door closing position, action of an overload device, abnormal light curtain, adhesion of an inside call and adhesion of an outside call, wherein the handling method of the fault-tolerant state comprises the following steps: the elevator does not stop and quickly approaches the flat floor of the floor;
the semi-fault-tolerant state comprises a semi-fault-tolerant state I and a semi-fault-tolerant state II, the semi-fault-tolerant state I comprises the following steps of exceeding operation monitoring time, instantaneously disconnecting a hall door lock in operation, instantaneously disconnecting a safety loop in operation, instantaneously disconnecting a car door in operation, instantaneously disconnecting a control system, instantaneously disconnecting a driving system, instantaneously disconnecting an elevator position, instantaneously disconnecting a temperature sensor, instantaneously disconnecting a micro leveling overtime and abnormally repairing in operation, and the handling method of the semi-fault-tolerant state I comprises the following steps: the elevator is stopped immediately and then can be moved to a leveling position or a reset floor at a normal or corrected speed; the semi-fault-tolerant state II comprises simultaneous actions of an upper forced speed changing switch and a lower forced speed changing switch, abnormal speed, a re-leveling fault, abnormal door zone signals, a car communication fault, an acceleration overcurrent, a deceleration overcurrent, a constant speed overcurrent, motor overload, system overload, an output phase failure, an input phase failure, abnormal encoder frequency division signals, an upper limit disconnection in operation, a lower limit disconnection in operation, three continuous times of normal speed resetting errors, car position loss, a hoistway position signal error and a micro leveling sensor fault, and the handling method of the semi-fault-tolerant state II comprises the following steps: the elevator car stops immediately and can only go to the leveling position or the reset floor at the anti-leveling speed.
2. The utility model provides an elevator fault-tolerant control system under stranded state which characterized in that: comprises a fault sampling module and a fault-tolerant control strategy module,
the fault sampling module is used for collecting the frequency of occurrence of faults, the number of the faults occurring simultaneously and the types of the faults occurring simultaneously;
the fault-tolerant control strategy module carries out comprehensive decision making according to the frequency of faults, the number of faults occurring simultaneously, the types of the faults and the consequences caused by the faults and outputs a control strategy;
the fault types comprise a fault-tolerant state, a semi-fault-tolerant state and a non-fault-tolerant state;
the fault tolerant state comprises: the handling method of the fault-tolerant state comprises the following steps of communication fault calling outside, group control communication fault, abnormal door opening, abnormal emergency lighting, abnormal car lighting, overheating of a motor, signal loss in door closing position, action of an overload device, abnormal light curtain, adhesion of an inside call and adhesion of an outside call, wherein the handling method of the fault-tolerant state comprises the following steps: the elevator does not stop and quickly approaches the flat floor of the floor;
the semi-fault-tolerant state comprises a semi-fault-tolerant state I and a semi-fault-tolerant state II, the semi-fault-tolerant state I comprises the following steps of exceeding operation monitoring time, instantaneously disconnecting a hall door lock in operation, instantaneously disconnecting a safety loop in operation, instantaneously disconnecting a car door in operation, instantaneously disconnecting a control system, instantaneously disconnecting a driving system, instantaneously disconnecting an elevator position, instantaneously disconnecting a temperature sensor, instantaneously disconnecting a micro leveling overtime and abnormally repairing in operation, and the handling method of the semi-fault-tolerant state I comprises the following steps: the elevator is stopped immediately and then can be moved to a leveling position or a reset floor at a normal or corrected speed; the semi-fault-tolerant state II comprises simultaneous actions of an upper forced speed changing switch and a lower forced speed changing switch, abnormal speed, a re-leveling fault, abnormal door zone signals, a car communication fault, an acceleration overcurrent, a deceleration overcurrent, a constant speed overcurrent, motor overload, system overload, an output phase failure, an input phase failure, abnormal encoder frequency division signals, an upper limit disconnection in operation, a lower limit disconnection in operation, three continuous times of normal speed resetting errors, car position loss, a hoistway position signal error and a micro leveling sensor fault, and the handling method of the semi-fault-tolerant state II comprises the following steps: the elevator fast car stops immediately and can only reach the leveling position or the reset floor at the speed of the reverse leveling;
the handling method of the fault-tolerant state comprises the following steps of safety loop circuit breaking, hall door lock loop circuit breaking, car door lock circuit breaking, auxiliary microcomputer driving system failure, control system CPU failure, contactor feedback signal loss, input under-voltage, motor encoder abnormity, output short circuit, brake unit failure, error in five-time self-rescue starting operation and brake feedback signal circuit breaking, wherein the handling method of the fault-tolerant state comprises the following steps: the elevator car stops immediately and can only be reset in a manual intervention mode.
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| US20200087111A1 (en) * | 2018-09-19 | 2020-03-19 | Otis Elevator Company | Sensor-based shutdown detection of elevator system |
| CN110127483A (en) * | 2019-05-28 | 2019-08-16 | 苏州台菱电梯有限公司 | A kind of elevator faults rescue system |
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| CN2876033Y (en) * | 2005-08-03 | 2007-03-07 | 王致杰 | Lifting machine safety control device based on fault-tolerant control |
| CN104058309B (en) * | 2014-06-23 | 2016-05-04 | 重庆市特种设备检测研究院 | A kind of electric safety return circuit of elevator redundancy and stop control method |
| JP2017039576A (en) * | 2015-08-19 | 2017-02-23 | 株式会社東芝 | Safety device and elevator system |
| CN106564786B (en) * | 2015-10-13 | 2018-08-14 | 上海三菱电梯有限公司 | Elevator control method based on three level power converters and control device |
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