CN114436105B - Fault detection method of elevator leveling induction system - Google Patents
Fault detection method of elevator leveling induction system Download PDFInfo
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- CN114436105B CN114436105B CN202011192756.2A CN202011192756A CN114436105B CN 114436105 B CN114436105 B CN 114436105B CN 202011192756 A CN202011192756 A CN 202011192756A CN 114436105 B CN114436105 B CN 114436105B
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- 238000001514 detection method Methods 0.000 title claims abstract description 144
- 230000006698 induction Effects 0.000 title claims abstract description 55
- 239000010410 layer Substances 0.000 claims abstract description 100
- 230000001174 ascending effect Effects 0.000 claims abstract description 20
- 239000011229 interlayer Substances 0.000 claims abstract description 11
- 230000002159 abnormal effect Effects 0.000 claims description 19
- 238000012795 verification Methods 0.000 claims description 12
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 5
- 230000005856 abnormality Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009193 crawling Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/02—Door or gate operation
- B66B13/14—Control systems or devices
- B66B13/16—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position
- B66B13/165—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position electrical
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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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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
- Elevator Control (AREA)
Abstract
The invention relates to a fault detection method of an elevator leveling induction system. An elevator flat bed induction system includes a flat bed magnet plate assembly, a magnetic sensor assembly, and an elevator control system. The fault detection method comprises the following steps: detecting an elevator power-off restarting state by an elevator control system; when the elevator is not detected to be powered off and restarted, determining that the elevator is put into operation; when the elevator is detected to be powered off and restarted, the elevator is started to perform floor identification through LOP/COP, and whether a leveling signal is normal or not when the elevator is in interlayer operation is detected. The invention can completely and comprehensively detect faults, ensures the stable operation of the flat layer induction system to the greatest extent, and can smoothly detect corresponding faults under the conditions of damage to the sensors of the flat layer induction system, damage to the ascending and/or descending decelerating magnet plates, damage to the flat layer magnet plates or poor installation of all parts, thereby providing a safe and reliable elevator taking environment for passengers.
Description
Technical Field
The invention relates to the technical field of elevator fault detection, in particular to a fault detection method of an elevator leveling induction system.
Background
The elevator market is increasingly competing and customers are increasingly focusing on the cost, functionality and safety of elevators. The elevator leveling induction system needs to have the above three aspects as an important function of an elevator.
At present, a common elevator generally adopts a photoelectric switch leveling device or a magnetic grid ruler with higher precision. The photoelectric switch leveling device has larger installation space, is easily influenced by dust and oil stains, has high cost, is limited by the size of the car in an installation mode, and is relatively complex in installation and debugging operation.
In order to pursue the maximum utilization rate of space, the method minimizes the required installation space of the leveling induction system, simultaneously achieves the optimal cost, is convenient to install and maintenance-free, has the functions of high leveling precision difference, floor absolute position identification, leveling operation and advanced door opening, and is required to provide a fault detection method of the leveling system in order to meet the requirements, so that the leveling system can realize the leveling debugging and normal operation of the elevator stably, reliably, efficiently and safely, provide fault detection protection and provide a safe and comfortable elevator riding environment for passengers.
The above description of the background is only for the purpose of facilitating a thorough understanding of the present invention's aspects (in terms of the means of technology used, the technical problems solved, and the technical effects produced, etc.) and should not be taken as an acknowledgement or any form of suggestion that this message constitutes prior art that is already known to a person skilled in the art.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a fault detection method of an elevator leveling induction system, so that the used leveling system can realize elevator leveling debugging and normal operation stably, reliably, efficiently and safely, provide fault detection protection and provide a safe and comfortable elevator taking environment for passengers.
According to one embodiment of the present invention, there is provided a fault detection method of an elevator landing induction system, wherein the elevator landing induction system includes: a flat-layered magnet plate assembly mounted to the elevator hoistway and having mounted thereon a plurality of magnets including a floor recognition magnet, a floor information verification magnet, and a flat-layered detection magnet; a magnetic sensor assembly mounted to the elevator car and having mounted thereon a plurality of magnetic sensors including a floor identifying magnetic sensor, a level detecting magnetic sensor, each of the plurality of magnetic sensors configured to sense magnetic signals of a plurality of magnets on the level magnet plate assembly of each floor; an elevator control system electrically connected to each of the plurality of magnetic sensors of the magnetic sensor assembly; the fault detection method comprises the following steps: detecting an elevator power-off restarting state by an elevator control system; when the elevator is not detected to be powered off and restarted, determining that the elevator is put into operation; when the elevator is detected to be powered off and restarted, starting the elevator to identify floors through LOP/COP, and detecting whether a leveling signal is normal when the elevator is in interlayer operation; if the leveling signal is normal during interlayer operation of the elevator, the elevator is put into operation; if the leveling signal is abnormal when the elevator is in interlayer operation, the elevator is stopped and fault information is displayed.
Preferably, the flat-layer magnet plate assembly further comprises a magnet plate; the floor recognition magnet and the floor information verification magnet are arranged in one side area of the magnet plate and are arranged in different patterns; the flat layer detection magnet is arranged in the other side area of the magnet plate, the flat layer detection magnet comprises a first flat layer detection magnet and a second flat layer detection magnet, the first flat layer detection magnet and the second flat layer detection magnet are partially overlapped and misplaced in the vertical direction, and the induction areas of the first flat layer detection magnet and the second flat layer detection magnet are aligned in the horizontal direction.
Preferably, the elevator leveling induction system further comprises an uplink decelerating magnet plate and/or a downlink decelerating magnet plate, wherein the uplink decelerating magnet plate and the downlink decelerating magnet plate are arranged in an elevator shaft, the uplink decelerating magnet plate is provided with an uplink decelerating magnet, and the downlink decelerating magnet plate is provided with a downlink decelerating magnet; the ascending decelerating magnet is arranged to be aligned with a first flat layer detecting magnet in the flat layer detecting magnets in the vertical direction; the descending deceleration magnet is arranged to be aligned with a second flat layer detection magnet among the flat layer detection magnets in the vertical direction.
Preferably, only a descending detection magnet plate is installed in an elevator shaft of the floor elevator; an elevator shaft of the elevator at the middle floor is provided with an uplink detection magnet plate and a downlink detection magnet plate; only an upward detection magnet plate is installed in an elevator shaft of the elevator at the floor of the top floor.
Preferably, the fault detection method includes: monitoring signals from a plurality of magnetic sensors in the event that the elevator is placed in operation; if signals from the magnetic sensors are detected to be normal, determining that the elevator is in normal operation; if any one of the signals from the plurality of magnetic sensors is detected to be abnormal, the elevator is stopped and fault information is displayed.
Preferably, the fault detection method includes: when the elevator car stops at the leveling position of a certain floor, if the floor information detected by the floor identification magnetic sensor is inconsistent with the pre-stored floor information in the elevator control system, the failure of the leveling magnet plate component or the magnetic sensor component is determined, so that the elevator stops running.
Preferably, the fault detection method includes: when the elevator car is not stopped at the flat floor position, if the signal of the flat floor detection magnet is detected to be abnormal, the failure of the flat floor detection magnetic sensor is determined, so that the elevator stops running.
Preferably, the fault detection method includes: after the elevator car passes through the ascending decelerating magnet or the descending decelerating magnet, if the signals of the flat layer detecting magnet cannot be detected and cannot be stopped at the flat layer position, the failure of the flat layer magnet plate assembly or the flat layer detecting magnetic sensor is determined, and the elevator stops running.
Preferably, the fault detection method includes: when the elevator car enters and exits the leveling position, if time sequence errors exist between the magnetic signal change of the floor identification magnet sensed by the floor identification magnetic sensor and the magnetic signal change of the leveling detection magnet sensed by the leveling detection magnetic sensor, the failure of the leveling magnet plate assembly or the floor identification magnetic sensor is determined, and the elevator stops running.
Preferably, the fault detection method includes: when the elevator car stops at the leveling position, if the magnetic signal of the leveling detection magnet is detected to be normal and the magnetic signal of the floor identification magnet is detected to be abnormal, the failure of the leveling magnet plate assembly or the floor identification magnetic sensor is determined, so that the elevator stops running.
Preferably, the fault detection method includes: when the elevator car is stopped at the flat floor position, if the magnetic signal of the flat floor detection magnet is detected to be abnormal, the failure of the flat floor magnet plate assembly or the flat floor detection magnetic sensor is determined, so that the elevator stops running.
Preferably, the fault detection method includes: when the elevator car is stopped at the leveling position, if the magnetic signal state of the floor identification magnet is detected to be unchanged, the magnetic signal of the leveling detection magnet is lost due to the fact that people move up and down in and out of the elevator car, the elevator is started to perform re-leveling operation, and the magnetic signal of the leveling detection magnet is enabled to be effective again, so that maintenance personnel are prompted to perform re-leveling operation once.
Preferably, the fault detection method includes: when the speed of the elevator car cutting into the flat layer magnet plate is abnormal, determining that the flat layer detection magnetic sensor is in fault or the ascending decelerating magnet plate or the descending decelerating magnet plate is in fault, and stopping the elevator.
The invention adopts the technical scheme that the invention has the following beneficial effects:
The elevator can completely and comprehensively detect faults, the stable operation of the leveling induction system is guaranteed to the greatest extent, and corresponding faults can be smoothly detected under the conditions that a sensor of the leveling induction system is damaged, an ascending and/or descending decelerating magnet plate is damaged, the leveling magnet plate is damaged or each part is poorly installed, so that the elevator can safely and reliably perform leveling and re-leveling operation, and a safe and reliable elevator taking environment is provided for passengers.
Drawings
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. For clarity, the same elements in different drawings are shown with the same reference numerals. It is noted that the figures are for illustrative purposes only and are not necessarily drawn to scale. In these figures:
Fig. 1 shows a schematic diagram of an elevator floor induction system according to an embodiment of the invention;
fig. 2A illustrates a top view of a flat layer magnet plate assembly of an elevator flat layer induction system according to an embodiment of the present invention;
fig. 2B illustrates a front view of a flat layer magnet plate assembly of an elevator flat layer induction system according to an embodiment of the present invention;
fig. 2C illustrates a perspective view of a flat layer magnet plate assembly of an elevator flat layer induction system according to an embodiment of the present invention;
Fig. 3A shows a schematic distribution diagram of magnets on a flat magnet plate assembly of each floor of an elevator flat induction system according to an embodiment of the present invention (where n=3);
fig. 3B shows a schematic distribution of magnets on a flat magnet plate assembly of each floor of an elevator flat induction system according to an embodiment of the present invention (where n=4);
FIG. 4 shows a schematic view of a magnet plate adjustment bracket for securing a flat layer magnet plate assembly according to an embodiment of the present invention;
Fig. 5 shows a schematic installation view of a leveling magnet plate assembly and a deceleration magnet plate on a magnet plate adjustment bracket for each floor of an elevator leveling induction system in accordance with an embodiment of the present invention;
fig. 6 shows a schematic installation view of a leveling magnet plate assembly and a deceleration magnet plate at each floor of an elevator leveling induction system according to an embodiment of the invention;
Fig. 7 shows a flowchart of a fault detection method of an elevator floor induction system according to an embodiment of the invention.
Detailed Description
The following describes embodiments of the present invention in detail, and the embodiments and specific operation procedures are given on the premise of the technical solution of the present invention, but the scope of the present invention is not limited to the following embodiments.
Fig. 1 shows a schematic diagram of an elevator floor induction system according to an embodiment of the invention. As shown in fig. 1, the elevator leveling induction system comprises a magnetic sensor assembly 11, a leveling magnet plate assembly 12 and an elevator control system, wherein the magnetic sensor assembly 11 is mounted on a car, a plurality of magnetic sensors including a floor identification magnetic sensor A, B, C and a leveling detection magnetic sensor L, U are mounted on the magnetic sensor assembly 11, and each of the plurality of magnetic sensors is configured to sense magnetic signals of a plurality of magnets on the leveling magnet plate assembly of each floor; the flat layer magnet plate assembly 12 is arranged on a magnet plate adjusting bracket of an elevator hoistway, and floor identification magnets A ', B ', C ' and floor information verification magnets L ', U ' are arranged on the flat layer magnet plate assembly 12; an elevator control system (not shown) is electrically connected to the magnetic sensors.
Fig. 2A-2C illustrate schematic diagrams of flat layer magnet plate assemblies of an elevator flat layer induction system according to embodiments of the present invention. Wherein fig. 2A shows a top view of a flat layer magnet plate assembly of an elevator flat layer induction system according to an embodiment of the present invention; fig. 2B illustrates a front view of a flat layer magnet plate assembly of an elevator flat layer induction system according to an embodiment of the present invention; fig. 2C illustrates a perspective view of a flat layer magnet plate assembly of an elevator flat layer induction system according to an embodiment of the present invention.
The flat layer magnet plate assembly 12 further includes a magnet plate 21, clips 23, and cross slot screws 24. Floor identifying magnets a ', B ', C ', leveling detecting magnets L ', U ' and floor information verifying magnet X are mounted on the magnet plate 21. The flat layer magnet plate assembly 12 is secured to the magnet plate adjustment bracket of the hoistway by clips 23 and cross-slot screws 24.
The arrangement combination of the floor identification magnets A ', B', C 'is used for identifying absolute floors, and the arrangement position of each floor identification magnet A', B ', C' corresponds to the floor where the elevator is located. Therefore, at least the floor recognition magnets for indicating the floor where the magnet plate is located are provided on the flat magnet plate assembly 12 for each floor, and the number of the floor recognition magnets can be set according to the number of floors that can be recognized. The floor information checking magnet X is only arranged on the flat layer magnet plate assembly of the middle floor, and the magnetic signal of the floor information checking magnet X is used for checking the floor information. The magnetic signals of the leveling detection magnets L ', U' are used for detecting signals of elevator leveling and re-leveling operation.
As shown in fig. 2B, floor recognition magnets a ', B ', C ' and a floor information verification magnet X are provided in one side region of the magnet plate 21; the flat layer detection magnets L ', U' are provided in the other side region of the magnet plate 21. The floor recognition magnets a ', B ', C ' are arranged in different patterns; the flat layer detection magnets L 'and U' are partially overlapped and misplaced in the vertical direction, and the sensing areas of the flat layer detection magnets L 'and U' are aligned in the horizontal direction.
The magnetic sensor mounted on the magnetic sensor assembly of the car and the magnet mounted on the flat magnet plate assembly in the invention can be the magnetic sensor and the small magnet for triggering the action thereof, but is not limited to the magnetic sensor and the magnet.
The shape of the magnet may include, but is not limited to, bar, horseshoe, ring, cylinder, pie, etc. shapes; the magnetic sensor may include, but is not limited to, a hall sensing element.
Wherein the floor recognition magnetic sensor A, B, C is disposed at a position corresponding to the floor recognition magnets a ', B', C ', respectively, and senses magnetic signals of the floor recognition magnets a', B ', C', respectively; the flat layer detection magnetic sensors L, U are arranged in parallel in the vertical direction, and sense magnetic signals of the flat layer detection magnets L ', U' at positions corresponding to the sensing regions of the flat layer detection magnets L ', U', respectively; the floor recognition magnetic sensor a senses the magnetic signal of the floor information verification magnet X.
Fig. 3A and 3B show a schematic distribution of magnets on a flat magnet plate assembly of each floor of an elevator flat induction system according to an embodiment of the present invention. Fig. 3A illustrates the distribution of magnets on the flat magnet plate assembly of each floor by taking a seven-floor building as an example, and fig. 3B illustrates the distribution of magnets on the flat magnet plate assembly of each floor by taking a fifteen-floor building as an example. When more floors exist, the number of floors can be identified only by changing the distribution of floor identification magnets on the flat magnet plate assembly of each floor.
The number of floors that can be identified and the number of floor identification magnets that need to be provided have the following relationship: the number of floors which can be identified is 2 N -1, wherein N is the number of floor identification magnets which need to be arranged, and N is an integer which is larger than 1.
The number of floor recognition magnetic sensors on the magnetic sensor assembly 11 corresponds to the number of floor recognition magnets on the flat magnet plate assembly 12, and the distribution corresponds to the number of floor recognition magnets.
Taking a seven-layer elevator as an example, the elevator runs upwards from one layer, when each magnetic sensor A, B, C, L, U passes through the two-layer flat magnet plates and the magnetic signals of the flat detection magnets L ', U', the floor identification magnets A ', and C' are all effective, floor data updating is 2, then the elevator continues to run upwards, the floor identification magnetic sensor A is separated from the floor identification magnets A 'of the two-layer flat magnet plates, and passes through the floor information verification magnets X of the two-layer flat magnet plates, at the moment, the floor information verification magnets X output an X pulse signal to instruct an elevator control system to run upwards through the middle floor, the record updating of the middle floor is 1, and when the elevator reaches three layers and the magnetic signals of the flat detection magnets L', U ', and the floor identification magnets C' are all effective, the floor data updating is 3. The elevator control system obtains the floor to be three layers through the magnetic signals of the flat layer detection magnets L ', U ' and the floor identification magnets C ', compares the floor with the middle floor data 1 to mutually check the elevator floor data, namely the floor data is three layers and passes through 1 middle floor, and the floor data is normal at the moment.
Therefore, the elevator landing induction system according to the embodiment of the present invention recognizes the number of floors only by setting the distribution of magnets on the landing magnet plate assembly of each floor, facilitates recognition of the location of the floors, and further verifies the floor information according to the signals of the floor information verification magnet X.
Fig. 4 shows a schematic view of a magnet plate adjustment bracket for securing a flat layer magnet plate assembly according to an embodiment of the present invention.
The flat magnet plate assembly 12 is installed in a set on each floor requiring service, starting from the floor of the floor. The flat magnet plate L-shaped bracket 41 for mounting the flat magnet plate assembly 12 is fixed to the counterweight guide rail 42.
The elevator is parked to each floor to adjust the position of the flat bed magnet plate assembly 12 to ensure that the flat bed detection magnetic sensors L, U on the magnetic sensor assembly 12 are aligned with the sensing areas of the flat bed detection magnets L ', U', respectively, on the flat bed magnet plate assembly 12. The adjustment is limited to changing the height position of the entire flat magnet plate assembly 12 and cannot change the position of the individual magnets on the flat magnet plate assembly 12.
Fig. 5 shows a schematic installation view of a leveling magnet plate assembly and a deceleration magnet plate on a magnet plate adjustment bracket for each floor of an elevator leveling induction system in accordance with an embodiment of the present invention.
The up-going decelerating magnet plates 54 and/or the down-going decelerating magnet plates 51, the flat layer magnet plate assembly 12 of each floor are mounted on a magnet plate adjusting bracket in the elevator shaft. Because the top-level elevator only needs to be decelerated up, and the bottom-level elevator only needs to be decelerated down, for the top-level elevator, only an up deceleration magnet plate 54 is arranged on the magnet plate adjusting bracket; for the bottom elevator, only a descending decelerating magnet plate 51 is arranged on the magnet plate adjusting bracket; for the middle floor, the magnet plate adjusting bracket is provided with an upward decelerating magnet plate 54 and a downward decelerating magnet plate 51. The ascending decelerating magnet plate 54 has an ascending decelerating magnet, and the descending decelerating magnet plate 51 has a descending decelerating magnet.
The descending deceleration magnet 51 is provided so as to be aligned with the flat layer detection magnet U' in the vertical direction; the ascending decelerating magnet 54 is disposed to be aligned with the flat layer detecting magnet L' in the vertical direction. Here, the flat layer detection magnetic sensor L, U also senses signals of the upward deceleration magnet and the downward deceleration magnet, respectively, so that the elevator can recognize and self-check whether it is downward deceleration or upward deceleration.
When the upward decelerating magnet 54 and the downward decelerating magnet 51 are mounted on the magnet plate adjusting bracket, it is necessary to secure the directions, the alignment, and the distances of the upward decelerating magnet 54 and the downward decelerating magnet 51 from the flat layer detecting magnet U 'and the flat layer detecting magnet L', so that the elevator can start decelerating at a preferable distance and stop normally. Further, it is also necessary to ensure that the vertical distance and the horizontal center error of the magnetic sensor assembly 11 and the flat magnet plate assembly 12 are within the design range.
Fig. 6 shows a schematic installation of a flat magnet plate assembly and a decelerating magnet plate at each floor of an elevator flat induction system according to an embodiment of the present invention.
The invention takes three floors as an example to describe the installation schematic diagrams of the assemblies of the uplink decelerating magnet plate, the downlink decelerating magnet plate and the flat magnet plate on each floor, but the invention is not limited to three floors.
For the top-floor elevator, only an uplink decelerating magnet plate 54 is installed on the magnet plate adjusting bracket, for the bottom-floor elevator, only a downlink decelerating magnet plate 51 is installed on the magnet plate adjusting bracket, and for the middle-floor elevator, both the uplink decelerating magnet plate 54 and the downlink decelerating magnet plate 51 are installed on the magnet plate adjusting bracket.
Fig. 7 is a flowchart of a fault detection method of an elevator floor induction system according to an embodiment of the present invention. As shown in fig. 7, after the installation of the magnetic sensor assembly and the flat magnet plate assembly for each floor is completed, the elevator control system monitors signals of the floor recognition magnetic sensor and the flat detection magnetic sensor in the elevator car in real time.
The elevator control system judges whether the elevator is in a power-off restarting state or not by detecting the floor-free information signal.
When the elevator control system determines that the elevator is not in the power-off restarting state, the elevator is determined to be put into operation.
When it is determined that the elevator is restarted by power outage, the elevator is started for floor recognition by an external call (LOP, landing Operation Panel) or an internal call (COP, car Operating Panel), and it is detected whether a leveling signal (which is a magnetic signal of leveling detection magnetic sensors U and L) is normal while running between the elevator floors.
When the elevator is powered off and restarted (powered on), the elevator control system cannot determine the floor where the elevator is located, particularly at the initial stage of elevator debugging, for example, the elevator may be in a non-flat floor position, the elevator is enabled to run downwards or upwards until the elevator is flat by an external calling (LOP, landing Operation Panel) or an internal calling (COP, car Operating Panel) button, after the elevator reaches the flat floor and when the flat floor signals are normal, the floor where the elevator is located can be obtained according to the combination of the magnetic signals of the floor identification magnetic sensor A, B, C, and thus the digital display panel of the floor can display the detected floor.
For example, in the case where the elevator stops at the first floor level position due to power-off, the elevator system cannot confirm the floor where the elevator is located at the time of power-up, if the external call LOP of the second floor is pressed, the elevator moves upward to the second floor level position, and the elevator stops after the magnetic signals of the level detection magnetic sensors U and L are both valid, at which time it can be determined that the elevator is at the second floor by the combination of the magnetic signals of the floor recognition magnetic sensor A, B, C (the second floor is the magnetic signals of a and C are valid).
If the leveling signal is normal during interlayer operation of the elevator, the elevator is put into operation; if the leveling signal is abnormal when the elevator is in interlayer operation, the elevator is stopped and fault information is displayed.
For example, in the case of an elevator being put into operation, signals from a plurality of magnetic sensors are monitored; if signals from the magnetic sensors are detected to be normal, determining that the elevator is in normal operation; if abnormality in signals from the plurality of magnetic sensors is detected, the elevator is stopped and failure information is displayed.
The normal operation flow of the elevator landing control system of the embodiment of the present invention will be described in detail below by taking a three-story building as an example.
The first floor elevator is used as a bottom floor elevator and is provided with only a descending detection magnet plate, the second floor elevator is used as a middle floor elevator and is provided with an ascending detection magnet plate and a descending detection magnet plate, and the third floor elevator is used as a top floor elevator and is provided with only an ascending detection magnet plate.
After the installation of the magnetic sensor assembly and the flat magnet plate assembly of each floor is completed, the elevator control system monitors signals of the floor identification magnetic sensor and the flat detection magnetic sensor in the elevator car in real time; detecting the power-off restarting state of the elevator; when the elevator is not detected to be powered off and restarted, determining that the elevator is put into operation; when the elevator is detected to be powered off and restarted, starting the elevator to identify floors through LOP (Landing Operation Panel)/COP (Car Operating Panel), and detecting whether floor identification signals and flat floor signals are normal or not when the elevator is in interlayer operation; if the floor identification signal and the flat floor signal are normal during the interlayer operation of the elevator, the elevator is put into operation; if the floor identification signal or the leveling signal is abnormal during the inter-floor operation of the elevator, stopping the operation of the elevator and displaying fault information.
In the case of an elevator taking into operation, assuming that the elevator is stopped at a floor waiting for a call, the elevator control system monitors signals from the floor recognition magnetic sensor A, B, C and the floor detection magnetic sensor U, L of the elevator floor level sensing system in real time, at which time signals from both the floor recognition magnetic sensor A, B, C and the floor detection magnetic sensor U, L are valid.
When a person calls an elevator at the hall call device, the elevator is started, the elevator control system firstly detects that the magnetic signal of the flat layer detection magnet L ' of the first floor flat layer magnet plate assembly is cut off, then the floor identification magnets A ', B ', C ' are cut off, and finally the signal of the flat layer detection magnet U ' is cut off.
When the elevator reaches a second floor quickly, the flat layer detection magnetic sensor L passes through an ascending deceleration magnet of the second floor, the flat layer detection magnetic sensor L senses pulse signals of the ascending detection magnet of the second floor, after the elevator control system receives the pulse signals of the ascending detection magnet of the second floor sensed by the flat layer detection magnetic sensor L, the elevator runs to the position of a flat layer magnet plate of the second floor at a target crawling speed, at the moment, firstly, the signals of the flat layer detection magnetic sensor L are cut in, then the signals of the floor identification magnetic sensor A, B, C are cut in, finally, the signals of the flat layer detection magnetic sensor U are cut in, and when the signals of the flat layer detection magnetic sensors U and L are simultaneously effective, the elevator is stopped at the flat layer.
If the signals from the floor identification magnetic sensor A, B, C and the flat detection magnetic sensor U, L are detected to be normal, the elevator is determined to be in normal operation; if abnormality of the signal from the floor recognition magnetic sensor A, B, C and the floor detection magnetic sensor U, L is detected, the elevator is stopped and a failure message is displayed.
Hereinafter, the fault detection of the elevator landing induction system according to the present invention will be described in detail.
When the elevator car stops at the level position of a certain floor, if the floor information detected by the floor recognition magnetic sensor A, B, C is inconsistent with the floor information pre-stored in the elevator control system, it is determined that the level magnet plate assembly or the magnetic sensor assembly (e.g., the floor recognition magnetic sensor A, B, C and the level detection magnetic sensor U, L) is failed, and the elevator is stopped.
When the elevator car is not stopped at the leveling position, if the signals of the leveling detection magnets U ', L' are detected to be abnormal, the failure of the leveling detection magnetic sensor is determined, so that the elevator stops running.
After the elevator car passes through the ascending or descending decelerating magnet, if the signal of the leveling detecting magnet cannot be detected and cannot be stopped at the leveling position, the leveling magnet plate assembly or the leveling detecting magnetic sensor is determined to be faulty, so that the elevator stops running.
When the elevator car enters and exits the leveling position, if time sequence errors exist between the magnetic signal change of the floor identification magnet sensed by the floor identification magnetic sensor and the magnetic signal change of the leveling detection magnet sensed by the leveling detection magnetic sensor, the failure of the leveling magnet plate assembly or the floor identification magnetic sensor is determined, and the elevator stops running.
When the elevator car stops at the leveling position, if the magnetic signal of the leveling detection magnet is detected to be normal and the magnetic signal of the floor identification magnet is detected to be abnormal, the failure of the leveling magnet plate assembly or the floor identification magnetic sensor is determined, so that the elevator stops running.
When the elevator car is stopped at the flat floor position, if the magnetic signal of the flat floor detection magnet is detected to be abnormal, the failure of the flat floor magnet plate assembly or the flat floor detection magnetic sensor is determined, so that the elevator stops running.
When the elevator car is stopped at the leveling position, if the magnetic signal state of the floor identification magnet is detected to be unchanged, the magnetic signal of the leveling detection magnet is lost due to the fact that people move up and down in and out of the elevator car, the elevator is started to perform re-leveling operation, and the magnetic signal of the leveling detection magnet is enabled to be effective again, so that maintenance personnel are prompted to perform re-leveling operation once.
When the speed of the elevator car cutting into the flat layer magnet plate is abnormal, determining that the flat layer detection magnetic sensor is in fault or the ascending decelerating magnet plate or the descending decelerating magnet plate is in fault, and stopping the elevator. That is, if the decelerating magnet plate is not installed at a required distance or the flat layer detecting magnetic sensor fails, that is, if the decelerating magnet plate is installed incorrectly or the flat layer detecting magnetic sensor U, L fails to break, the elevator is decelerated abnormally, and when the decelerating magnet plate is cut into the flat layer, the deviation between the detected speed of the elevator and the reference speed is large, thereby indicating the abnormal deceleration failure, and thus, it is determined that the ascending and descending decelerating magnet is installed abnormally or the flat layer detecting sensor U/L fails, and the elevator is stopped.
According to the fault detection method of the elevator leveling induction system, faults can be completely and comprehensively detected, stable operation of the leveling induction system is guaranteed to the greatest extent, and corresponding faults can be smoothly detected under the conditions that sensors of the leveling induction system are damaged, ascending and/or descending decelerating magnet plates are damaged, the leveling magnet plates are damaged or installation of all components are poor, so that an elevator can safely and reliably perform leveling and re-leveling operation, and a safe and reliable elevator taking environment is provided for passengers.
The description of the exemplary embodiments presented above is merely illustrative of the technical solution of the present invention and is not intended to be exhaustive or to limit the invention to the precise form described. Obviously, many modifications and variations are possible in light of the above teaching to those of ordinary skill in the art. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application to thereby enable others skilled in the art to understand, make and utilize the invention in various exemplary embodiments and with various alternatives and modifications. It is intended that the scope of the invention be defined by the following claims and their equivalents.
Claims (12)
1. A fault detection method for an elevator landing induction system, the elevator landing induction system comprising:
a flat-layered magnet plate assembly mounted to the elevator hoistway and having mounted thereon a plurality of magnets including a floor recognition magnet, a floor information verification magnet, and a flat-layered detection magnet;
A magnetic sensor assembly mounted to the elevator car and having mounted thereon a plurality of magnetic sensors including a floor identifying magnetic sensor, a level detecting magnetic sensor, each of the plurality of magnetic sensors configured to sense magnetic signals of a plurality of magnets on the level magnet plate assembly of each floor;
An elevator control system electrically connected to each of the plurality of magnetic sensors of the magnetic sensor assembly;
Wherein the floor information verification magnet is disposed only on the flat magnet plate assembly of the middle floor, and the floor identification magnetic sensor is configured to sense a magnetic signal of the floor information verification magnet;
The flat-layer magnet plate assembly further comprises a magnet plate;
the floor recognition magnet and the floor information verification magnet are arranged in one side area of the magnet plate and are arranged in different patterns;
The flat layer detection magnet is arranged in the other side area of the magnet plate, the flat layer detection magnet comprises a first flat layer detection magnet and a second flat layer detection magnet, the first flat layer detection magnet and the second flat layer detection magnet are partially overlapped and misplaced in the vertical direction, and the induction areas of the first flat layer detection magnet and the second flat layer detection magnet are aligned in the horizontal direction;
the elevator control system is configured to:
When the elevator runs to the first floor, the floor identification magnetic sensor senses the magnetic signal of the floor identification magnet and updates the floor information to the first floor,
When the elevator is running continuously, the floor recognition magnetic sensor senses the magnetic signal of the floor information checking magnet and updates the middle floor information to 1,
When the elevator continues to run to the second floor, the floor recognition magnetic sensor senses the magnetic signal of the floor recognition magnet and updates the floor information to the second floor,
Determining whether the floor data is normal by using the first floor, the middle floor information and the second floor;
The fault detection method comprises the following steps:
detecting an elevator power-off restarting state by an elevator control system;
when the elevator is not detected to be powered off and restarted, determining that the elevator is put into operation;
when the elevator is detected to be powered off and restarted, starting the elevator to identify floors through LOP/COP, and detecting whether a leveling signal is normal when the elevator is in interlayer operation;
if the leveling signal is normal during interlayer operation of the elevator, the elevator is put into operation;
If the leveling signal is abnormal when the elevator is in interlayer operation, the elevator is stopped and fault information is displayed.
2. The fault detection method of the elevator leveling induction system according to claim 1, wherein the elevator leveling induction system further comprises an uplink decelerating magnet plate and/or a downlink decelerating magnet plate, the uplink decelerating magnet plate and the downlink decelerating magnet plate are mounted in an elevator hoistway, the uplink decelerating magnet plate is provided with an uplink decelerating magnet, and the downlink decelerating magnet plate is provided with a downlink decelerating magnet;
The ascending decelerating magnet is arranged to be aligned with a first flat layer detecting magnet in the flat layer detecting magnets in the vertical direction;
The descending deceleration magnet is arranged to be aligned with a second flat layer detection magnet among the flat layer detection magnets in the vertical direction.
3. The method for detecting a failure of an elevator leveling induction system according to claim 2, characterized in that,
Only a descending detection magnet plate is arranged in an elevator shaft of the elevator at the bottom floor;
an elevator shaft of the elevator at the middle floor is provided with an uplink detection magnet plate and a downlink detection magnet plate;
only an upward detection magnet plate is installed in an elevator shaft of the elevator at the floor of the top floor.
4. The fault detection method of an elevator leveling induction system according to claim 1, characterized in that the fault detection method comprises:
monitoring signals from a plurality of magnetic sensors in the event that the elevator is placed in operation;
If signals from the magnetic sensors are detected to be normal, determining that the elevator is in normal operation;
If any one of the signals from the plurality of magnetic sensors is detected to be abnormal, the elevator is stopped and fault information is displayed.
5. The fault detection method of an elevator floor induction system according to claim 4, characterized in that the fault detection method comprises:
When the elevator car stops at the leveling position of a certain floor, if the floor information detected by the floor identification magnetic sensor is inconsistent with the pre-stored floor information in the elevator control system, the failure of the leveling magnet plate component or the magnetic sensor component is determined, so that the elevator stops running.
6. The fault detection method of an elevator floor induction system according to claim 4, characterized in that the fault detection method comprises: when the elevator car is not stopped at the flat floor position, if the signal of the flat floor detection magnet is detected to be abnormal, the failure of the flat floor detection magnetic sensor is determined, so that the elevator stops running.
7. The fault detection method of an elevator floor induction system according to claim 4, characterized in that the fault detection method comprises:
After the elevator car passes through the ascending decelerating magnet or the descending decelerating magnet, if the signals of the flat layer detecting magnet cannot be detected and cannot be stopped at the flat layer position, the failure of the flat layer magnet plate assembly or the flat layer detecting magnetic sensor is determined, and the elevator stops running.
8. The fault detection method of an elevator floor induction system according to claim 4, characterized in that the fault detection method comprises:
When the elevator car enters and exits the leveling position, if time sequence errors exist between the magnetic signal change of the floor identification magnet sensed by the floor identification magnetic sensor and the magnetic signal change of the leveling detection magnet sensed by the leveling detection magnetic sensor, the failure of the leveling magnet plate assembly or the floor identification magnetic sensor is determined, and the elevator stops running.
9. The fault detection method of an elevator floor induction system according to claim 4, characterized in that the fault detection method comprises:
When the elevator car stops at the leveling position, if the magnetic signal of the leveling detection magnet is detected to be normal and the magnetic signal of the floor identification magnet is detected to be abnormal, the failure of the leveling magnet plate assembly or the floor identification magnetic sensor is determined, so that the elevator stops running.
10. The fault detection method of an elevator floor induction system according to claim 4, characterized in that the fault detection method comprises:
When the elevator car is stopped at the flat floor position, if the magnetic signal of the flat floor detection magnet is detected to be abnormal, the failure of the flat floor magnet plate assembly or the flat floor detection magnetic sensor is determined, so that the elevator stops running.
11. The fault detection method of an elevator floor induction system according to claim 4, characterized in that the fault detection method comprises:
When the elevator car is stopped at the leveling position, if the magnetic signal state of the floor identification magnet is detected to be unchanged, the magnetic signal of the leveling detection magnet is lost due to the fact that people move up and down in and out of the elevator car, the elevator is started to perform re-leveling operation, and the magnetic signal of the leveling detection magnet is enabled to be effective again, so that maintenance personnel are prompted to perform re-leveling operation once.
12. The fault detection method of an elevator floor induction system according to claim 4, characterized in that the fault detection method comprises:
When the speed of the elevator car cutting into the flat layer magnet plate is abnormal, determining that the flat layer detection magnetic sensor is in fault or the ascending decelerating magnet plate or the descending decelerating magnet plate is in fault, and stopping the elevator.
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