CN112499418B - Magnetic induction elevator operation data acquisition system and acquisition method thereof - Google Patents
Magnetic induction elevator operation data acquisition system and acquisition method thereof Download PDFInfo
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- CN112499418B CN112499418B CN202011501662.9A CN202011501662A CN112499418B CN 112499418 B CN112499418 B CN 112499418B CN 202011501662 A CN202011501662 A CN 202011501662A CN 112499418 B CN112499418 B CN 112499418B
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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
- B66B1/34—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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B15/00—Main component parts of mining-hoist winding devices
- B66B15/02—Rope or cable carriers
- B66B15/04—Friction sheaves; "Koepe" pulleys
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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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- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention relates to a magnetic induction elevator operation data acquisition system, which comprises a traction machine and a traction sheave, wherein the output end of the traction machine is in transmission connection with the traction sheave, and the traction sheave drives a car to complete lifting motion and/or start and stop work: the elevator control system also comprises a magnetic induction module and an elevator control module; the magnetic induction module comprises a permanent magnet and a magnetic induction device, and the permanent magnet does circular motion along with the rotation of the traction sheave; the elevator control module is connected with the magnetic induction device, magnetic signals acquired by the magnetic induction device are fed back to the elevator control module, and the elevator control module calculates the rolling travel and/or the rolling speed of the traction sheave according to the magnetic signals; more than one permanent magnet is combined to form a magnetic induction detection unit, and more than two magnetic induction detection units are combined to form a steering identification unit. The elevator operation data acquisition system can effectively acquire elevator operation data, is accurate in data and reliable in performance, and can be universally used for elevators of different models.
Description
Technical Field
The invention relates to an elevator auxiliary device, in particular to a magnetic induction elevator operation data acquisition system and an acquisition method thereof.
Background
The collected operation data can be sent to a control center for centralized control management and monitoring, so that the control center can control the normal operation of the elevator according to the operation data or timely take corresponding measures under abnormal/emergency conditions.
At present, an elevator is generally controlled by an RS485 or CAN BUS in an elevator control system, and operation data is displayed on corresponding floors and cars; when obtaining the running state information of the car, various technical means are usually adopted to be connected with an elevator controller, and the running state information of the car is read and collected; however, since there are elevators of different types and kinds in the market and the communication protocols used by different elevators are often different, the communication protocol, elevator parameters, etc. of the elevator of the relevant type must be known when the elevator operation state information is read from the elevator controllers of the elevators of different types, which brings difficulty to information reading and leads to difficulty in providing standard communication data related to the elevator operation state information for elevator remote monitoring management by users; in addition, the current collection mode of the elevator operation data in the market generally adopts a contact type detection scheme, so that the collection accuracy of the operation data is influenced, and the normal operation of the elevator can be interfered; in addition, directly reading the elevator running state information from the elevator controller means that reliable elevator running state information cannot be continuously provided when the elevator controller fails, depending on the state of the elevator controller. It is clear that there is a need to design a system that can collect and analyze the operational data of elevators of different models.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides the magnetic induction elevator operation data acquisition system and the magnetic induction elevator operation data acquisition method.
The purpose of the invention is realized by the following steps:
the utility model provides a magnetic induction's elevator operation data acquisition system, includes hauler and driving sheave, and the output transmission of hauler connects the driving sheave in order to drive its rotation, and the driving sheave passes through wire rope and drives the car and accomplish elevating movement and/or open and stop the work: the elevator control system also comprises a magnetic induction module used for acquiring magnetic signals and an elevator control module used for analyzing and processing the magnetic signals; the magnetic induction module comprises a permanent magnet which can send out a magnetic signal and is arranged at the non-circle center position of the traction sheave and a magnetic induction device which is used for collecting the magnetic signal from the permanent magnet, and the permanent magnet does circular motion along with the rotation of the traction sheave; the elevator control module is connected with the magnetic induction device, magnetic signals acquired by the magnetic induction device are fed back to the elevator control module, and the elevator control module calculates the rolling travel and/or the rolling speed of the traction sheave according to the magnetic signals so as to obtain the running distance and/or the running speed of the lift car; more than one permanent magnet is combined to form a magnetic induction detection unit, and more than two magnetic induction detection units are combined to form a steering identification unit.
The permanent magnets are arranged in one or more than two blocks, and the more than two permanent magnets are distributed along the same circumferential track.
The steering distinguishing units are arranged at one or more than two positions and are annularly and uniformly distributed along the same circumferential track.
In the steering distinguishing unit, the number of the permanent magnets in at least two magnetic induction detection units is different, a first interval is arranged between every two adjacent magnetic induction detection units, a second interval is arranged between every two adjacent permanent magnets in the magnetic induction detection units, the first interval is larger than the second interval, and the elevator control module distinguishes forward and reverse rotation of the traction wheel according to the magnetic signal of the steering distinguishing unit so as to distinguish the upward or downward movement of the car.
The elevator control module is provided with a revolution recording module for recording the rolling revolution of the traction sheave and/or a time recording module for recording the rolling time of the traction sheave.
The elevator control module comprises a central main control module for analyzing and processing the magnetic signals, a storage for storing related data and a network communication module for realizing data transmission; the magnetic induction device is connected with the central main control module, and the magnetic induction device transmits the collected magnetic signals to the central main control module, and the magnetic signals are analyzed and processed by the central main control module and converted into corresponding elevator operation data; the central main control module is respectively connected with the network communication module and the storage; and the central main control module performs data transmission with an external upper computer through the network communication module.
The central main control module is a programmable logic controller; the memory is at least used for storing basic parameters of the elevator and elevator operation data; the external upper computer comprises a building control center and a remote monitoring center.
A method for acquiring a magnetic induction elevator operation data acquisition system,
the lift car starts to move upwards from the lower end station position or the lift car starts to move downwards from the upper end station position; the magnetic induction device collects magnetic signals sent by the permanent magnet, the elevator control module analyzes the rolling revolution of the traction sheave according to the collected magnetic signals, the running distance of the elevator is further calculated, and meanwhile, the running acceleration a1 and/or the running deceleration a2 and/or the running uniform speed V1 of the elevator are calculated by combining the rolling time of the traction sheave.
The diameter of the traction wheel is d, and the surface perimeter L1 of the traction wheel is d.pi;
acquisition of running uniform velocity V1: when the lift car is in a constant-speed running state, monitoring the constant-speed rolling revolution number N1 of the traction sheave in time T1 by taking the time point and the position point of the magnetic induction device corresponding to any permanent magnet as starting points, and calculating the running constant speed V1= (N1. L1)/T1 of the lift car, wherein N1 is a natural number;
acquisition of the running acceleration a 1: when the cage is accelerated to the running uniform speed V1 from the stop state by the time T2, the running acceleration a1 of the cage is calculated to be (V1-0)/T2;
acquisition of operating deceleration a 2: when the cage decelerates from the running uniform speed V1 to a stop state through the time T3, the running deceleration a2 of the cage is calculated to be (0-V1)/T3;
acquisition of the travel distance S: after the lift car finishes an ascending task or a descending task, recording the total acquisition times N2 of the times of magnetic signals in the whole task execution process, wherein the set number of the permanent magnets on the traction sheave is N3, namely the rolling revolution number N4= N2/N3 of the traction sheave; when the magnetic induction device corresponds to the permanent magnet at the recording starting point e1 and the recording end point e2, the running distance S = N4. L1 of the car; when the magnetic induction device does not correspond to the permanent magnet at the recording start point e1, an initial distance L2 exists between the recording start point e1 and the first permanent magnet on the traction sheave, and/or when the magnetic induction device does not correspond to the permanent magnet at the recording end point e2, a final distance L3 exists between the recording end point e2 and the last permanent magnet on the traction sheave, the running distance S = N4 · L1+ L2 and/or L3 of the car.
Determination of the initial distance L2: measuring an initial speed V2 when a first permanent magnet passes through a magnetic induction device by using a speed sensor in advance, recording a corresponding initial distance L2 and initial end time T4, and establishing a corresponding mathematical model comparison table by using the initial speed V2, the initial distance L2 and the initial time T4; final distance L3 determination: and measuring the final speed V3 when the last permanent magnet passes through the magnetic induction device by using a speed sensor in advance, recording the corresponding final distance L3 and the corresponding final time T5, and establishing a corresponding mathematical model comparison table according to the final speed V3, the final distance L3 and the final time T5.
The invention has the following beneficial effects:
the system is characterized in that a permanent magnet is arranged on a traction sheave, when the traction sheave rotates, the permanent magnet does circular motion along with the traction sheave, so that the permanent magnet passes through a magnetic induction device, a magnetic signal of the permanent magnet is received by the magnetic induction device, an elevator control module analyzes and processes the magnetic signal, the running distance, the running speed and the like of a car can be effectively monitored, whether the elevator runs normally or not can be monitored by comparing with standard parameters, and the car can be tracked according to the running distance of the car; specifically, the elevator operation data acquisition system adopts a non-contact magnetic induction acquisition elevator traction sheave mode to accurately acquire the operation data of the elevator, wherein the operation data comprises operation speed, operation distance, ascending or descending of a car, working time (time for putting the elevator into use), operation time (time for starting the car to stop the car), dwell time and the like; the system is suitable for elevators of any brand and any model, has the advantages of low cost, simple and convenient installation, no dangerous construction for installers and the like, and the collected elevator operation data can provide a basis for elevator maintenance as required, elevator fault judgment, smart city construction and the like;
in addition, the magnetic induction elevator operation data acquisition system has the advantages that the operation data acquisition mode is irrelevant to the communication protocol of the elevator and is not electrically connected with the elevator control system, so that the elevator operation data acquisition is convenient and quick, more accurate and reliable, does not need to overcome special technical limit, and has the characteristics of low installation/manufacturing cost, reliable performance and the like;
in addition, the running data of the elevator is connected with an external upper computer through a network communication module, so that a user can monitor the running state of the elevator in real time, and the use safety of the elevator is effectively ensured.
Drawings
Fig. 1 is a partial structural view of an elevator in an embodiment of the present invention.
Fig. 2 is a schematic diagram of the lifting of the car in an embodiment of the present invention.
Fig. 3 is a schematic view of a combination of the magnetic induction module and the traction sheave according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of the magnetic induction module identifying the forward rotation of the traction sheave according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of the magnetic induction module identifying the reverse rotation of the traction sheave according to an embodiment of the present invention.
Fig. 6 is a schematic diagram of a recording start point e1 and a recording end point e2 corresponding to the same permanent magnet according to an embodiment of the present invention.
Fig. 7 is a schematic diagram of the recording start point e1 and the recording end point e2 corresponding to different permanent magnets according to an embodiment of the present invention.
Fig. 8 is a schematic diagram illustrating that the recording start point e1 does not correspond to the permanent magnet according to an embodiment of the present invention.
Fig. 9 is a schematic diagram of the recording end point e2 not corresponding to the permanent magnet according to an embodiment of the present invention.
Fig. 10 is a schematic diagram of the recording start point e1 and the recording end point e2 not corresponding to the permanent magnet in one embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and examples.
Referring to fig. 1-5, the magnetic induction elevator operation data acquisition system comprises a traction machine 1, a traction sheave 2, a guide sheave 8 and a counterweight 9, wherein an output end of the traction machine 1 is in transmission connection with the traction sheave 2 to drive the traction sheave to rotate, the traction sheave 2 drives a car 7 to complete lifting motion and start and stop work through a steel wire rope 3, the steel wire rope 3 respectively winds around the traction sheave 2 and the guide sheave 8, one end of the steel wire rope 3 is connected with the car 7, and the other end of the steel wire rope is connected with the counterweight 9: the system also comprises a magnetic induction module used for acquiring magnetic signals and an elevator control module used for analyzing and processing the magnetic signals; the magnetic induction module comprises a permanent magnet 5 which can emit magnetic signals and is arranged at the non-circle center position of the traction sheave 2 and a magnetic induction device 4 which is used for collecting the magnetic signals from the permanent magnet 5, the permanent magnet 5 makes circular motion along with the rotation of the traction sheave 2, and the motion track is a circular track b; the elevator control module is connected with the magnetic induction device 4, the magnetic signals collected by the magnetic induction device 4 are fed back to the elevator control module, the elevator control module calculates the rolling travel and the rolling speed of the traction sheave 2 according to the magnetic signals, and then obtains the running distance and/or the running speed of the car 7, because the rolling travel of the traction sheave 2 is equal to or infinitely close to the running distance S of the car 7, the rolling speed of the traction sheave 2 is equal to or infinitely close to the running speed of the car 7, and the running speed comprises running acceleration a1, running deceleration a2 and running uniform speed V1; more than one permanent magnet 5 are combined to form a magnetic induction detection unit, and more than two magnetic induction detection units are combined to form a steering identification unit c'. The system is characterized in that a permanent magnet 5 is arranged on a traction sheave 2, when the traction sheave 2 rotates, the permanent magnet 5 moves circularly along with the traction sheave 2, the permanent magnet 5 passes through a magnetic induction device 4, a magnetic signal of the permanent magnet 5 is received by the magnetic induction device 4, an elevator control module analyzes and processes the magnetic signal, so that the running distance, the running speed and other running data of a car 7 can be effectively monitored, whether the elevator runs normally or not can be monitored by comparing with standard parameters, and the stop position (the number of floors) of the car 7 can be monitored according to the running distance S of the car 7; the magnetic induction elevator operation data acquisition system has the advantages that the operation data acquisition mode is irrelevant to the communication protocol of the elevator and is not electrically connected with the elevator control system, so that the elevator operation data acquisition is convenient and rapid, more accurate and reliable, special technical limit is not required to be overcome, the magnetic induction elevator operation data acquisition system has the characteristics of low installation/manufacturing cost, reliable performance and the like, and can be suitable for different elevators, and the universality is high; in addition, the running data of the elevator is connected with an external upper computer through a network communication module, so that a user can monitor the running state of the elevator in real time, and the use safety of the elevator is effectively ensured.
Furthermore, the permanent magnets 5 are arranged in one or more than two, and the permanent magnets 5 are distributed along the same circumferential track b, so that the magnetic induction device 4 can effectively receive magnetic signals sent by the permanent magnets 5.
Furthermore, the turning distinguishing units c 'are arranged at one or more than two, and the turning distinguishing units c' are annularly and uniformly distributed along the same circumferential track b. Specifically, four steering identifying units c 'are arranged in the embodiment, and the elevator control module judges that the traction sheave 2 rotates for one circle when the magnetic induction device 4 receives magnetic signals sent by each steering identifying unit c' for four times; if eight magnetic signals are received, judging that the magnetic signal rotates for two circles; if the twelve magnetic signals are received, judging that the rotation is carried out for three circles; by analogy, the total acquisition frequency N2 of the received magnetic signals is divided by four (the number of the permanent magnets 5 is N3, N3=4 in this embodiment), so as to obtain the number of revolutions of the traction sheave 2, and further calculate the corresponding running distance of the car 7.
Furthermore, the elevator control module can distinguish the positive and negative rotation of the traction sheave 2 to judge the ascending or descending of the car 7; in the steering distinguishing unit c', the number of the permanent magnets 5 in at least two magnetic induction detection units is different, a first distance d1 exists between every two adjacent magnetic induction detection units, a second distance d2 exists between every two adjacent permanent magnets 5 in the magnetic induction detection units, and the first distance d1 is larger than the second distance d2, so that the elevator control module can distinguish different magnetic induction detection units; the elevator control module distinguishes the positive and negative rotation of the traction sheave 2 according to the magnetic signal sent by the steering distinguishing unit c', and further distinguishes the ascending or descending of the elevator car 7. Specifically, in each steering discriminating unit c' according to the present embodiment, two magnetic induction detection units are provided, that is, a first magnetic induction detection unit c1 and a second magnetic induction detection unit c2, one permanent magnet 5 in the first magnetic induction detection unit c1 is provided, and two permanent magnets 5 in the second magnetic induction detection unit c2 are provided; referring to fig. 4, when the magnetic induction device 4 sequentially receives two magnetic signals in the second magnetic induction detection unit c2 and one magnetic signal in the first magnetic induction detection unit c1, the elevator control module determines that the traction sheave 2 rotates forward, that is, the car 7 moves upward; referring to fig. 5, when the magnetic induction device 4 sequentially receives one magnetic signal in the first magnetic induction detection unit c1 and one magnetic signal in the second magnetic induction detection unit c2, the elevator control module determines that the traction sheave 2 is reversely rotated, that is, the car 7 moves downward.
Furthermore, the elevator control module is provided with a revolution recording module for recording the rolling revolution of the traction sheave 2 and a time recording module for recording the rolling time of the traction sheave 2; the running distance of the car 7 can be calculated by detecting the rolling revolution of the traction sheave 2 through a revolution recording module; the running acceleration a1, the running deceleration a2 and the running uniform speed V1 of the car 7 can be calculated by recording the corresponding rolling time of the traction wheel 2 through the time recording module, and the running time and the stopping time of the car 7 can be counted by the time recording module.
Furthermore, the elevator control module comprises a central main control module for analyzing and processing the magnetic signals, a storage for storing related data and a network communication module for realizing data transmission; the magnetic induction device 4 is connected with the central main control module, and the magnetic induction device 4 transmits the collected magnetic signals to the central main control module which analyzes and processes the magnetic signals and converts the magnetic signals into corresponding elevator operation data; the central main control module is respectively connected with the network communication module and the memory; and the central main control module performs data transmission with an external upper computer through the network communication module.
Furthermore, the central main control module is a programmable logic controller; the storage is at least used for storing basic parameters of the elevator and elevator operation data; the external upper computer comprises a building control center and a remote monitoring center.
The embodiment relates to a collecting method of an elevator operation data collecting system,
the car 7 starts to move upwards from the lower end station position (the lowest layer) or the car 7 starts to move downwards from the upper end station position (the highest layer) and the magnetic induction device 4 collects magnetic signals sent by the permanent magnet 5, the elevator control module analyzes the rolling revolution number of the traction sheave 2 according to the collected magnetic signals, the running distance S of the elevator is further calculated, and meanwhile, the running acceleration a1 and/or the running deceleration a2 and/or the running uniform speed V1 of the elevator are calculated by combining the rolling time of the traction sheave 2.
Further, the diameter of the traction sheave 2 is d, the surface perimeter L1 of the traction sheave 2 is d · pi (pi is a circumferential ratio, pi ≈ 3.14), that is, the rolling stroke of one rotation of the traction sheave 2 is L1, and correspondingly, the running distance of the car 7 is L1; because four steering identifying units c 'are annularly and uniformly distributed in the embodiment, the traction sheave 2 starts to rotate when the magnetic induction device 4 corresponds to any steering identifying unit c';
1. when receiving a magnetic signal from a steering discriminating unit c', the rolling stroke of the traction sheave 2 is (1/4) · L1;
2. when receiving the magnetic signals sent by the two steering identifying units c', the rolling stroke of the traction sheave 2 is (1/2) · L1;
3. when receiving the magnetic signals sent by the three steering discriminating units c', the rolling stroke of the traction sheave 2 is (3/4) · L1;
4. when receiving the magnetic signals sent by the four steering distinguishing units c', the rolling stroke of the traction sheave 2 is L1;
5. when receiving the magnetic signals sent by the N2 steering distinguishing units c', the rolling stroke of the traction sheave 2 is (N2/4) · L1, namely the running distance S of the car 7 is (N2/4) · L1;
acquisition of running uniform speed V1: when the car 7 is in a constant-speed running state, taking a time point and a position point of the magnetic induction device 4 corresponding to any permanent magnet 5 as a starting point, monitoring a constant-speed rolling revolution number N1 of the traction sheave 2 within time T1, and calculating a running constant speed V1 of the car 7 by using a revolution distance algorithm, namely calculating the running constant speed V1= (N1. L1)/T1 of the car 7, wherein N1 is a natural number;
acquisition of the running acceleration a 1: when the car 7 accelerates from a stop state to a running uniform speed V1 by a time T2, calculating the running acceleration a1 of the car 7 to be (V1-0)/T2;
acquisition of operating deceleration a 2: when the cage 7 decelerates from the running uniform speed V1 to a stop state through the time T3, the running deceleration a2 of the cage 7 is calculated to be (0-V1)/T3;
acquisition of the travel distance S: after the car 7 finishes an ascending or descending task, recording the total acquisition frequency N2 of the magnetic signal frequency (a magnetic signal is sent by a steering distinguishing unit c') in the whole task execution process, wherein the set number of the permanent magnets 5 on the traction sheave 2 is N3 (N3 =4 in the embodiment), namely the total rolling revolution number N4= N2/N3 of the traction sheave 2;
(1) When the magnetic induction device 4 corresponds to the permanent magnet 5 at both the recording start point e1 and the recording end point e2, the running distance S = N4 · L1 of the car 7;
(1) in the case of the first case, referring to fig. 6, the recording start point e1 and the recording end point e2 correspond to the same permanent magnet 5, the total acquisition number N2 is divisible by N3, and the total number N4 of rolling revolutions is an integer;
(2) in the second case, referring to fig. 7, the recording start point e1 and the recording end point e2 correspond to different permanent magnets 5, the total collection number N2 cannot be divided by N3, and the remainder is 1/4L1;
(2) When the magnetic induction device 4 does not correspond to the permanent magnet 5 at the recording start point e1, there is an initial distance L2 between the recording start point e1 and the first permanent magnet 5 on the traction sheave 2, and/or when the magnetic induction device 4 does not correspond to the permanent magnet 5 at the recording end point e2, there is a final distance L3 between the recording end point e2 and the last permanent magnet 5 on the traction sheave 2, the running distance S = N4 · L1+ L2 and/or L3 of the car 7;
(1) in the first case, referring to fig. 8, the magnetic induction device 4 does not correspond to the permanent magnet 5 at the recording start point e1, and the recording end point e2 corresponds to the permanent magnet 5, and the travel distance S = N4 · L1+ L2 of the car 7;
(2) in a second case, referring to fig. 9, the magnetic induction device 4 does not correspond to the permanent magnet 5 at the recording end point e2, and the recording start point e1 corresponds to the permanent magnet 5, and the travel distance S = N4 · L1+ L3 of the car 7;
(3) in a third case, referring to fig. 10, the magnetic induction device 4 does not correspond to the permanent magnet 5 at both the recording start point e1 and the recording end point e2, and the travel distance S = N4 · L1+ L2+ L3 of the car 7;
on the premise of accurately knowing the running distance S of the car 7, the floor where the car 7 stops can be calculated through a rotating speed distance algorithm, and whether the car 7 is opened in a flat layer or not can be effectively judged by monitoring the stopping position of the car 7.
Furthermore, in practical application, the floor heights h1 of all floors are often equal (the floor height h1 of a commodity building and the like is generally 3m; in a special building, if the floor heights h1 of all floors are different, a user can perform custom input in a control system); the control system corrects the floor once when the car 7 stops once;
when the lift car 7 ascends from the first floor and stops after passing through the running distance S1, the number of floors where the lift car 7 stops can be calculated through S1/h1 (when the floor heights h1 of all the floors are different, the running distance S1 is sequentially reduced by the floor height h1 of the passed floor until the result is 0, and then the number of floors corresponding to the last reduced floor height h1 is the floor where the lift car 7 stops);
when the car 7 ascends from the (m 1) th floor and stops after passing through the running distance S2, the number of floors where the car 7 stays can be calculated by m1+ S2/h1 (when the floor heights h1 of all floors are different, the running distance S2 is sequentially subtracted from the floor height h1 of the passing floor until the result is 0, and then the number of floors corresponding to the last subtracted floor height h1 is the floor where the car 7 stays);
when the car 7 descends from the top floor (the m2 th floor) and stops after passing through the running distance S3, the number of floors where the car 7 stops can be calculated through m2-S3/h1 (when the floor heights h1 of all floors are different, the running distance S3 is sequentially subtracted from the floor height h1 of the passing floor until the result is 0, and then the number of floors corresponding to the last subtracted floor height h1 is the floor where the car 7 stops);
when the car 7 descends from the m3 th floor and stops after the running distance S4, the number of floors on which the car 7 stays can be calculated through m3-S4/h1 (when the floor heights h1 of all the floors are different, the running distance S4 is sequentially subtracted from the floor heights h1 of the passing floors until the result is 0, and then the number of floors corresponding to the last subtracted floor height h1 is the floor on which the car 7 stays);
if the building has an underground layer and the floor height h2 of the underground layer (the floor height h2 of the underground layer is different according to the design of the building, the parameters such as the floor height h2 of the underground layer need to be set by a user in a control system in a self-defined way); when the car 7 ascends from the underground floor and stops after passing through the running distance S5, the number of floors where the car 7 stops can be calculated by (S5-h 2)/h 1 (when the floor height h1 of each floor is different, the running distance S5 is used for sequentially reducing the floor height h2 of the underground floor and the floor height h1 of the passed floor until the result is 0, and then the number of floors corresponding to the last reduced floor height h1 is the floor where the car 7 stops);
when the running distance cannot be completely divided or reduced through the calculation mode, the control system judges that the lift car 7 is not a flat layer door, and then sends out a fault signal to inform maintenance personnel to process in time.
Further, determination of the initial distance L2: measuring an initial speed V2 when the first permanent magnet 5 passes through the magnetic induction device 4 by using a speed sensor in advance, recording a corresponding initial distance L2 and initial end time T4, establishing a corresponding mathematical model comparison table by using the initial speed V2, the initial distance L2 and the initial time T4, and determining a corresponding distance in a comparison mode because the friction coefficients are the same; with reference to the following table,
table one: mathematical model comparison table:
final distance L3 determination: measuring the final speed V3 when the last permanent magnet 5 passes through the magnetic induction device 4 by using a speed sensor in advance, recording the corresponding final distance L3 and the corresponding final time T5, establishing a corresponding mathematical model comparison table according to the final speed V3, the final distance L3 and the final time T5, and determining the corresponding distance in a comparison mode due to the same friction coefficient; with reference to the following table,
table two: mathematical model comparison table:
the foregoing is a preferred embodiment of the present invention, and the basic principles, main features and advantages of the present invention are shown and described. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The acquisition method of the magnetic induction elevator operation data acquisition system comprises a traction machine (1) and a traction sheave (2), wherein the output end of the traction machine (1) is in transmission connection with the traction sheave (2) to drive the traction sheave to rotate, and the traction sheave (2) drives a car (7) to complete lifting motion and/or start and stop work: the elevator control system also comprises a magnetic induction module used for acquiring magnetic signals and an elevator control module used for analyzing and processing the magnetic signals; the magnetic induction module comprises a permanent magnet (5) for sending out a magnetic signal and a magnetic induction device (4) for collecting the magnetic signal from the permanent magnet (5), the permanent magnet (5) makes a circular motion along with the rotation of the traction sheave (2), and the motion track is a circular track (b); the elevator control module is connected with the magnetic induction device (4), magnetic signals collected by the magnetic induction device (4) are fed back to the elevator control module, and the elevator control module calculates the rolling travel and/or the rolling speed of the traction sheave (2) according to the magnetic signals so as to obtain the running distance and/or the running speed of the car (7); more than one permanent magnet (5) are combined to form a magnetic induction detection unit, and more than two magnetic induction detection units are combined to form a steering identification unit (c'); in the steering distinguishing unit (c '), the number of the permanent magnets (5) in at least two magnetic induction detection units is different, a first distance (d 1) is reserved between every two adjacent magnetic induction detection units, a second distance (d 2) is reserved between every two adjacent permanent magnets (5) in the magnetic induction detection units, the first distance (d 1) is larger than the second distance (d 2), and the elevator control module distinguishes the forward and reverse rotation of the traction wheel (2) according to a magnetic signal sent by the steering distinguishing unit (c'), and further distinguishes the upward movement or the downward movement of the elevator car (7);
the method is characterized in that: the lift car (7) starts to move upwards from the lower end station position or the lift car (7) starts to move downwards from the upper end station position; the magnetic induction device (4) collects magnetic signals sent by the permanent magnet (5), the elevator control module analyzes the rolling revolution number of the traction sheave (2) according to the collected magnetic signals, the running distance S of the elevator is further calculated, and meanwhile, the running acceleration a1 and/or the running deceleration a2 and/or the running uniform velocity V1 of the elevator are calculated by combining the rolling time of the traction sheave (2);
according to the acquisition method of the magnetic induction elevator operation data acquisition system, the diameter of the traction sheave (2) is d, and the surface perimeter L1 of the traction sheave (2) is d & pi;
acquisition of running uniform velocity V1: when the lift car (7) is in a constant-speed running state, monitoring the constant-speed rolling revolution number N1 of the traction sheave (2) in the time T1 by taking the time point and the position point of the magnetic induction device (4) corresponding to any permanent magnet (5) as starting points, and calculating the running constant speed V1= (N1. L1)/T1 of the lift car (7);
acquisition of the running acceleration a 1: when the car (7) accelerates to a running uniform speed V1 from a stop state by a time T2, calculating that the running acceleration a1 of the car (7) is (V1-0)/T2;
acquisition of operating deceleration a 2: when the cage (7) decelerates to a stop state from the running uniform speed V1 by the time T3, the running deceleration a2 of the cage (7) is calculated to be (0-V1)/T3;
collecting the running distance S: after the car (7) finishes an ascending or descending task, recording the total acquisition times N2 of the times of magnetic signals in the whole task execution process, wherein the set number of the permanent magnets (5) on the traction sheave (2) is N3, namely the total rolling revolution number N4= N2/N3 of the traction sheave (2); when the magnetic induction device (4) corresponds to the permanent magnet (5) at the recording starting point e1 and the recording end point e2, the running distance S = N4 & L1 of the lift car (7); when the magnetic induction device (4) does not correspond to the permanent magnet (5) at the recording starting point e1, an initial distance L2 exists between the recording starting point e1 and the first permanent magnet (5) on the traction sheave (2), and/or when the magnetic induction device (4) does not correspond to the permanent magnet (5) at the recording ending point e2, a final distance L3 exists between the recording ending point e2 and the last permanent magnet (5) on the traction sheave (2), and the running distance S = N4 · L1+ L2 and/or L3 of the lift car (7) is realized.
2. The method for acquiring the magnetic induction elevator operation data acquisition system according to claim 1, wherein: the steering distinguishing units (c ') are arranged at one or more than two, and the steering distinguishing units (c') are annularly and uniformly distributed along the same circumferential track (b).
3. The method for acquiring the elevator operation data acquisition system according to claim 1, wherein: the elevator control module is provided with a revolution recording module for recording the rolling revolution of the traction sheave (2) and/or a time recording module for recording the rolling time of the traction sheave (2).
4. The method for acquiring the magnetic induction elevator operation data acquisition system according to claim 1, wherein: the elevator control module comprises a central main control module for analyzing and processing the magnetic signals, a storage for storing related data and a network communication module for realizing data transmission; the magnetic induction device (4) is connected with the central main control module, and the magnetic induction device (4) sends the collected magnetic signals to the central main control module which analyzes and processes the magnetic signals and converts the magnetic signals into corresponding elevator operation data; the central main control module is respectively connected with the network communication module and the storage; and the central main control module performs data transmission with an external upper computer through the network communication module.
5. The method for acquiring the magnetic induction elevator operation data acquisition system according to claim 4, wherein: the central main control module is a programmable logic controller; the memory is at least used for storing basic parameters of the elevator and elevator operation data; the external upper computer comprises a building control center and a remote monitoring center.
6. The method for acquiring the magnetic induction elevator operation data acquisition system according to claim 1, wherein: determination of the initial distance L2: measuring an initial speed V2 when a first permanent magnet (5) passes through a magnetic induction device (4) by using a speed sensor in advance, recording a corresponding initial distance L2 and initial end time T4, and establishing a corresponding mathematical model comparison table by using the initial speed V2, the initial distance L2 and the initial time T4; final distance L3 determination: and measuring the final speed V3 when the last permanent magnet (5) passes through the magnetic induction device (4) by using a speed sensor in advance, recording the corresponding final distance L3 and the corresponding final time T5, and establishing a corresponding mathematical model comparison table according to the final speed V3, the final distance L3 and the final time T5.
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| CN113830631B (en) * | 2021-10-13 | 2023-04-11 | 无锡新马赫动力控制有限公司 | Novel operation control system and control method of intelligent elevator |
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