CN113023516B - Method and device for judging elevator leveling fault - Google Patents
Method and device for judging elevator leveling fault Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B3/00—Applications of devices for indicating or signalling operating conditions of elevators
- B66B3/02—Position or depth indicators
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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
- B66B5/0025—Devices monitoring the operating condition of the elevator system for maintenance or repair
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0037—Performance analysers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
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Abstract
The invention discloses a method and a device for judging elevator flat layer faults, wherein the method comprises the following steps: taking a leveling signal and a target floor signal of the elevator, and judging whether the elevator is at the target floor according to the target floor signal; if so, calculating a normal change sequence of signals of the leveling sensor from the initial floor to the target floor of the elevator; acquiring a real-time change sequence of leveling sensor signals from a starting floor to a target floor; comparing whether the normal variation sequence is the same as the real-time variation sequence; if the elevator is the same as the standard elevator, judging that the elevator is normally leveled, and if the elevator is not the same as the standard elevator, judging that the elevator has leveling fault. When the elevator runs or passes through a fault floor, the corresponding abnormal change can occur to the flat sensor signal, the fault judgment can be carried out by analyzing the real-time change sequence of the elevator flat sensor signal, the fault prediction can also be carried out, and the maintenance in advance enables passengers to avoid the fault, so that the elevator maintenance personnel can be enabled to maintain the elevator in time, and the probability of elevator accidents is reduced.
Description
Technical Field
The invention relates to the technical field of elevators, in particular to a method and a device for judging faults of an elevator.
Background
In recent years, with a large increase in the amount of elevator usage, higher and higher floors, and an increasing use time of elevators, elevator failure phenomena inevitably show an increasing trend. The elevator car position judgment is correct or not, so that the elevator operation efficiency is influenced, and a series of flat-layer faults can be caused. When the position of the car is obtained wrongly, the result is very serious once an accident occurs.
The conventional elevator car position is obtained by calculating the actual rotating circumference of the traction sheave from the measurement signal of a floor encoder (main machine side rotary encoder), thereby converting the moving distance of the steel wire rope and the car position. When the floor encoder judges that the position of the car is in the flat range, the door is opened to release people. At present, the elevator generally depends on a floor encoder and a leveling device to comprehensively judge the position of an elevator car. Referring to fig. 1, the leveling device generally includes a leveling sensor 1 and a leveling baffle 2, the leveling sensor 1 is mounted on the car and moves up and down along with the car; the flat bed damper 2 is installed at a fixed position in the elevator shaft.
The elevator leveling sensor 1 generally has a photoelectric sensing type and a magnetic sensing type, and the elevator position is judged through sensing signals between the leveling sensor 1 and the leveling baffle 2. To the photoelectric sensing formula sensor of generally adopting at present, generally there are two sensing nodes about, when two sensing nodes all detected flat bed baffle 2, the elevator door can be accurate aim at the elevator exit, makes things convenient for personnel's safety to come in and go out.
However, the flat-layer fault occurs occasionally due to problems such as signal loss and flat-layer baffle displacement, and therefore the occurrence rate of elevator accidents is increased.
Disclosure of Invention
The invention mainly aims to provide a method and a device for judging elevator flat bed faults, and aims to solve the technical problems that in the prior art, flat bed faults occur frequently due to the problems of signal loss, flat bed baffle displacement and the like, so that the occurrence rate of elevator accidents is increased.
In order to achieve the above object, a first aspect of the present invention provides a method for determining an elevator leveling fault, including: acquiring a leveling signal and a target floor signal of an elevator, and judging whether the elevator is at a target floor according to the target floor signal; if yes, calculating a normal change sequence of signals of the elevator from a starting floor to a target floor, wherein the normal change sequence of the signals of the leveling sensor comprises no induction signal, an upper induction signal, a lower induction signal and a full induction signal in the first direction and in the static state, the normal change sequence comprises no induction signal, an upper induction signal, a lower induction signal and a first full induction signal which are in the first direction and have a first preset number, the first preset number is the number of floors from the starting floor to the target floor, and the first direction is the ascending direction or the descending direction of the elevator and the full induction signal in the static state; acquiring a real-time change sequence of the leveling sensor signals from a starting floor to a target floor; comparing whether the normal variant sequence is identical to the real-time variant sequence; if the elevator is the same as the standard elevator, judging that the elevator is normally leveled, and if the elevator is not the same as the standard elevator, judging that the elevator has leveling fault.
Further, the method further comprises: after the floor leveling signal is obtained, if the current floor of the elevator is not the target floor, judging whether a second preset number of the upper induction signals, the first full induction signals and the lower induction signals exist in the same direction in a change sequence of the floor leveling sensor signal between the starting floor and the current floor, wherein the second preset number is the number of floors between the starting floor and the current floor; if so, judging that the leveling sensor fails or the leveling baffle falls off; if not, the flat layer signal is continuously acquired.
Further, after the elevator is judged to have the flat-layer fault, the method further comprises the following steps: in a first direction, judging whether the real-time change sequence has the upper induction signals, the full induction signals and the full induction signals in a static state, wherein the first preset number of the upper induction signals and the full induction signals are in the real-time change sequence; and if so, judging that the flat layer fault is a flat layer non-stop fault.
Further, after the elevator is judged to have the flat-layer fault, the method further comprises the following steps: in a first direction, judging whether the real-time change sequence has the lower induction signals and the first full induction signals which are more than the first preset number, whether the real-time change sequence has the lower induction signals in a static state, and whether the real-time change sequence has the full induction signals in a direction opposite to the first direction; and if so, judging that the flat layer fault is a flat layer dislocation fault.
Further, after the elevator is judged to have the flat-layer fault, the method further comprises the following steps: in a first direction, judging whether the upper induction signal and the lower induction signal are adjacent in the real-time change sequence; if the upper induction signal and the lower induction signal are adjacent, judging whether the upper induction signal and the lower induction signal reciprocate circularly; and if the elevator does not move up and down circularly, judging that the floor leveling fault is a floor leveling fault which is not capable of moving up and down circularly.
Further, after the elevator is judged to have the flat-layer fault, the method further comprises the following steps: in a first direction, determining whether the upper sensing signal and the lower sensing signal have adjacent combinations in the real-time change sequence minus the leveling sensor signal of the target floor; if so, judging that the floors represented by the combination when the upper induction signal is adjacent to the lower induction signal have the floor leveling failure that the elevator does not move up and down in a circulating mode.
Further, after the elevator is judged to have the flat-layer fault, the method further comprises the following steps: and generating alarm information and sending the alarm information to a receiving end of an elevator maintenance worker.
The second aspect of the present application provides a device for determining elevator flat bed fault, including: the elevator control system comprises a data acquisition device, a judgment and calculation module and a control module, wherein the data acquisition device is used for acquiring a leveling signal and a leveling sensor signal of an elevator, the judgment and calculation module is used for judging whether the elevator is at a target floor, if so, a normal change sequence of the leveling sensor signal from an initial floor to the target floor of the elevator is calculated; the acquisition module is used for acquiring a real-time change sequence of the leveling sensor signals from a starting floor to a target floor; a comparison module for comparing whether the normal variation sequence is the same as the real-time variation sequence; and the judging module is used for judging the normal leveling of the elevator if the normal change sequence is the same as the real-time change sequence, and judging the leveling fault of the elevator if the normal change sequence is not the same as the real-time change sequence.
Further, the data collector comprises: the system comprises a controller local area network transceiver, a singlechip and a narrow-band Internet of things module; the controller local area network transceiver is electrically connected with the elevator controller and is used for acquiring a leveling signal and a leveling sensor signal from a serial port of the elevator controller, and the serial port is a controller local area network bus; the single chip microcomputer is electrically connected with the controller local area network transceiver and is used for acquiring the leveling signal and the leveling sensor signal from the controller local area network transceiver; the narrow-band Internet of things module is electrically connected with the single chip microcomputer and is used for acquiring the leveling signal and the leveling sensor signal from the single chip microcomputer and sending the leveling signal and the leveling sensor signal to a preset terminal.
Further, the data collector further comprises: the power management module is electrically connected with the controller local area network transceiver, the singlechip and the narrow-band Internet of things module; the standby power supply is electrically connected with the power supply management module; and the two ends of the photoelectric isolator are respectively connected with the controller local area network transceiver and the elevator serial port.
The invention provides a method and a device for judging elevator faults, which have the advantages that: when the elevator runs or passes through a fault floor, the corresponding abnormal change of the level sensor signal can occur, so that the fault judgment and the fault prediction can be performed by analyzing the real-time change sequence of the elevator level sensor signal, the passenger can be prevented from experiencing the fault by maintaining in advance, the elevator maintenance personnel can be enabled to maintain the elevator in time, and the accident occurrence probability of the elevator is reduced.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of the installation of a leveling sensor and a leveling guard of a prior art elevator;
fig. 2 is a schematic flow chart of a fault determination method for an elevator according to an embodiment of the present application;
fig. 3 is a schematic connection diagram of a data collector and an elevator controller of a fault determination device of an elevator according to an embodiment of the present application;
fig. 4 is a functional schematic block diagram of a data collector of a fault determination device of an elevator according to an embodiment of the present application.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a method for determining elevator flat-bed fault includes:
s101, acquiring a leveling signal and a target floor signal of the elevator, and judging whether the elevator is on a target floor according to the target floor signal;
s102, if yes, calculating a normal change sequence of signals of the leveling sensor from the initial floor to the target floor of the elevator;
s103, acquiring a real-time change sequence of leveling sensor signals from a starting floor to a target floor;
s104, comparing whether the normal change sequence is the same as the real-time change sequence or not;
and S105, if the elevator is the same, judging that the elevator is normally leveled, and if the elevator is not the same, judging that the elevator has a leveling fault.
In this embodiment, the change of the leveling sensor signal includes no sensing signal, upper sensing signal, lower sensing signal, and full sensing signal in the first direction and at rest, and the normal change sequence includes no sensing signal, upper sensing signal, lower sensing signal, and first full sensing signal in the first direction, where the first predetermined number is the number of floors from the starting floor to the target floor, and the first direction is the up direction or the down direction of the elevator, and a full sensing signal in the rest.
Specifically, the signal is included in the 7 th bit of the leveling frame (data frame at the head of 0001), and the specific format of these signals differs depending on the up/down state of the elevator. The corresponding relation between the elevator leveling sensor signal and the elevator running state is shown in table 1:
table 1: corresponding relation table of leveling sensor signal and elevator running state
| Elevator/leveling sensor | Without induction | Lower induction | Upper induction | Full induction |
| At rest | 00 | 04 | 08 | 0C |
| Uplink is carried out | 01 | 05 | 09 | 0D |
| Downstream | 02 | 06 | 0A | 0E |
When the elevator runs or passes through a fault floor, the corresponding abnormal change of the level sensor signal can occur, so that the fault judgment and the fault prediction can be performed by analyzing the real-time change sequence of the elevator level sensor signal, the passenger can be prevented from experiencing the fault by maintaining in advance, the elevator maintenance personnel can be enabled to maintain the elevator in time, and the accident occurrence probability of the elevator is reduced.
Elevator floors are now higher and higher, as residential district elevators are often above 30 floors. The connection between the elevator controller and the elevator control box is typically by serial transmission, such as a Canbus interface. The invention takes out the operation data from the serial interface of the elevator controller and the control box (signal processing board).
In the present embodiment, the target floor signal: the elevator control box is typically sent to the elevator control, typically in the form of bits representing the destination floor, e.g. 01 representing a first floor in call, 02 representing a second floor in call, 03 being 1 and second floor simultaneously in call.
Leveling signal: the elevator control box sends the elevator control box to the elevator controller to indicate that the elevator arrives at a certain floor. The elevator floor encoder can automatically calculate the number of leveling signals, calculate the position (floor) of the elevator, and simultaneously send the floor number back to the elevator control box to prompt a user.
Leveling sensor signal: the elevator control box sends the information to the elevator controller to indicate the sensing relation of the flat sensor to the baffle. Including the upper sensing signal: the sensing node on the leveling sensor senses the leveling baffle, so that the sensing signal is set. Similarly, there are lower induction, full induction, and no induction signals.
This application utilizes a data collection station, and this serial ports to the direct articulate of data collection station on the elevator obtains the target floor signal, flat bed signal, the flat bed sensor signal of elevator, then just can make up according to these signals and judge the relevant trouble of elevator flat bed sensor.
Since in normal conditions, e.g. the first direction of the elevator is up, the starting floor is first floor, the target floor is second floor, the elevator is in normal up-going conditions, according to the codes in table 1, the normal change of the leveling sensor signal of the elevator is as shown in table 2:
table 2: in normal state, the signal of the sensor changes at the level of the target floor (second floor)
Therefore, in the process from the first floor to the second floor, the normal change sequence of the seventh bit of the leveling sensor signal is 01-09-0D-0C, and if the seventh bit of the leveling sensor signal is not the same as the normal change sequence, a fault is shown in a certain link, so that the elevator is judged to have a leveling fault at the moment.
In one embodiment, the method for determining elevator leveling fault further comprises: after the floor leveling signal is obtained, if the current floor of the elevator is not the target floor, whether a second preset number of upper induction signals, first full induction signals and lower induction signals exist in the same direction in a change sequence of the floor leveling sensor signal between the starting floor and the current floor or not is judged, and the second preset number is the number of floors between the starting floor and the current floor; if so, judging that the leveling sensor fails or the leveling baffle falls off; if not, the flat layer signal is continuously acquired.
Taking the target floor as the third floor and the starting floor as the first floor as an example, according to the data in table 1, the change of the level sensor signal when passing through the second floor in the normal state is shown in table 3:
table 3: in normal state, the signal changes of the sensor passing through the floor (second floor) and the flat floor
When the second floor baffle falls off or the sensor fails to sense, the 7 th bit of the flat frame of the second floor baffle becomes: 01 go upwards without induction, and lack "09", "0D" and "05", but because the second floor is not the target floor, the elevator still goes upwards normally. In the embodiment, the data center can receive the data of the leveling sensor, the data center can monitor the data of the leveling sensor in real time after receiving the data of the leveling sensor, and once the signal abnormality is found, maintenance personnel can be informed in time to intervene in advance.
In the traditional flat floor fault, the elevator must run to the fault floor to obtain relevant data. I.e. the passenger can only know that the elevator is out of order after experiencing a flat-bed fault. In the embodiment of the application, once the second floor data is abnormal, the second floor data can be found in real time, and the failure fault of the sensor can be judged and early warning can be performed only by the elevator passing through the floor. At present, floors are higher and higher, if the floors of a cell are mostly more than 30 floors, taking 30 floors as an example, the probability that a fault floor is just a target floor is only about 3%, and about 97% of probability can be found in advance and a maintenance worker is informed to intervene in advance through an early warning mechanism. Thereby avoiding with great probability the passengers experiencing a malfunction related to the sensor failure.
In one embodiment, after determining that the elevator has a flat-bed fault, the method further comprises: in a first direction, judging whether a first preset number of upper induction signals, full induction signals and a static full induction signal exist in a real-time change sequence; if yes, judging that the flat layer fault is a flat layer non-stop fault.
Still taking the first direction of the elevator as ascending, the initial floor is the first floor, and the target floor is the second floor as an example, if the elevator has a no-parking fault, the seventh position of the signal of the level sensor is not changed, which is 01 in table 2, and 09, 0D and 0C are missing, so that the elevator can be judged to have the no-parking fault, data is transmitted to the data center of the monitoring system in real time through the data acquisition board, and once the no-parking fault of the level occurs, fault judgment can be performed according to the missing of the signal.
In one embodiment, after determining that the elevator has a flat-bed fault, the method further comprises: in a first direction, judging whether a real-time change sequence has lower induction signals and first full induction signals which are more than a first preset number, lower induction signals when the real-time change sequence is static, and full induction signals in a direction opposite to the first direction; if yes, the flat layer fault is judged to be a flat layer dislocation fault.
In the practical use process of the elevator, if the flat-layer baffle is dislocated due to loose screws or other reasons, the flat-layer baffle usually moves downwards relative to the normal position due to the action of gravity. When the elevator runs to a normal leveling position, the leveling baffle moves downwards, the leveling sensor senses the lower part but not senses the whole part, the elevator cannot open the door, and the elevator continues to move downwards to search the full sensing state of the leveling sensor. After the leveling sensor senses the full, the inner door of the elevator is opened, but the floor encoder judges the non-leveling state of the elevator due to the fact that the inner door deviates from the leveling range at the moment, and the outer door of the elevator can be kept closed and is powered off. At this time, a flat layer dislocation failure occurs.
Still taking the first direction of the elevator as an ascending, the starting floor as a first floor, and the target floor as a second floor as an example, under normal conditions, according to the codes in table 1, the normal change of the leveling sensor signal of the elevator is as shown in table 2, when the second floor leveling baffle moves down, the leveling dislocation fault occurs, and the change of the leveling sensor signal is as shown in table 4:
table 4: when the horizontal layer is dislocated and has fault, the signal of the horizontal layer sensor of the target floor (second floor) changes
It can be seen that: when the elevator causes a non-flat-layer door opening fault due to downward movement of the flat-layer baffle, compared with a normal 0001 data frame '09-0D-0C', a change rule of '09-0D-05-04-06-0E-OC' appears. The added 05-04-0D-0E data can be in one-to-one correspondence with the meanings shown in the table 1. In addition, if passengers are present in the elevator, a trapping event can be caused because the inner door of the elevator is opened and the outer door remains closed in the event of a floor-leveling error.
The leveling sensor signals are transmitted back to a data center of a monitoring system in real time, elevator leveling dislocation faults can be judged according to the change rule sequence of the leveling sensor signals, timely maintenance is carried out, and the elevator trapping events can be reduced.
In one embodiment, after determining that the elevator has a flat-bed fault, the method further comprises: judging whether an upper induction signal and a lower induction signal are adjacent in a real-time change sequence in a first direction; if the upper induction signal and the lower induction signal are adjacent, judging whether the upper induction signal and the lower induction signal reciprocate circularly; if the elevator does not move up and down circularly, the elevator is judged to be in the target floor, and the elevator does not move up and down circularly.
In the actual motion process of elevator, the full response state is found to the flat sensor, and the elevator just can the flat open the door, but if the flat baffle shortens because reasons such as corruption, fracture, and length is less than the distance of flat sensor upper and lower induction node, the sensor just can't reach the full response state, can take place one kind this moment "circulation up-and-down motion" can not the flat fault.
Still taking the first direction of the elevator as ascending, the starting floor as first floor and the target floor as second floor as examples, if the fault that the elevator can not level in the second floor circularly moves up and down, the running condition of the elevator from the first floor to the second floor is as follows: after the elevator is sensed by the leveling sensor, the elevator continues to go upwards normally until the elevator is sensed by the lower leveling sensor, but the upper leveling sensor does not sense the baffle any more. After the elevator is temporarily static, the elevator goes down to search for a full induction state. And descending to the upper flat sensor for sensing, and the lower flat sensor does not sense the baffle any more at the moment. After a short standstill, the elevator runs upwards. The above steps are repeated in a circulating way to search for the flat layer state fully sensed by the sensor. The signal change of the 2-floor level sensor at this time is shown in table 5:
table 5: when the floor can not be leveled, the signal of the floor leveling sensor of the target floor (2 floors) changes
This phenomenon is not common in reality, but once it occurs, the elevator will move up and down cyclically around the range of the fault floor level without opening the door, causing serious harm to the mind and body of passengers. And, because the searching for the full induction state is the normal operation logic of the elevator, the elevator cannot actively judge the fault. But we can still do the monitoring of the fault of the non-leveling layer according to the abnormity of the leveling signal: full induction '0D' is lost between the upper induction '09' and the lower induction '05' of the leveling sensor, and the method and the system are in circulation, once the monitoring system finds that the data is abnormal, the failure in leveling can be judged and the alarm can be given, and therefore the failure in leveling can be timely solved.
In one embodiment, after determining that the elevator has a flat-bed fault, the method further comprises: in the first direction, judging whether an upper induction signal and a lower induction signal have adjacent combination in a real-time change sequence of the leveling sensor signal with the target floor subtracted; if yes, judging that the floors represented by the combination when the upper induction signal is adjacent to the lower induction signal have the floor leveling failure that the elevator does circular up-and-down motion.
Taking the first direction of the elevator as upward, the starting floor as the first floor and the target floor as the third floor as an example, if the floor-leveling failure of the cyclic up-and-down motion occurs on the second floor, i.e. when the passenger travels from floor 1 to floor 3 (or higher), and passes floor 2, the change of the floor-leveling sensor signal is as shown in table 6:
table 6: when the floor can not be leveled, the signal of the sensor passing through the floor (2 floors) is changed
Compared with the normal state of table 3, when the signal changes of the floor sensor passing through the floor (2-floor), it can be found that the full induction "0D" is lost between the upper induction "09" and the lower induction "05" of the floor sensor. Once the monitoring system finds that the data is abnormal, fault prediction can be carried out, and maintenance personnel are informed to intervene in advance, so that the problem that the fault cannot be leveled can be solved in time.
In one embodiment, after determining that the elevator has a flat-bed fault, the method further comprises: and generating alarm information and sending the alarm information to a receiving end of an elevator maintenance worker.
The alarm information is sent to the receiving end of the elevator maintenance personnel, so that the maintenance personnel can receive the information that the elevator has faults at the first time, and the elevator is cleared at the first time, and therefore the occurrence probability of elevator accidents is reduced.
In one embodiment, the method for judging the elevator flat bed fault judges the failure of a flat bed sensor or the falling of a flat bed baffle, the failure of no stop of the flat bed, the dislocation failure of the flat bed and the failure of the flat bed, firstly judges the running of the elevator and judges whether the first direction of the elevator is ascending or descending, and the embodiment adopts the above behavior example.
After the leveling signal is acquired, whether the elevator reaches a target floor or not is judged, if not, whether the leveling sensor fails or the leveling baffle falls off or not is judged, if yes, the leveling sensor of the elevator fails or the leveling baffle of the elevator shaft falls off is judged, and if not, the leveling signal is continuously acquired.
After the leveling signal is acquired, if the elevator reaches a target floor, whether the leveling sensor does not stop the elevator or not is judged, and then the leveling dislocation fault and the non-leveling fault are sequentially judged.
In this embodiment, a modern elevator has a data interface between the control box/call board and the controller, regardless of the type of elevator or the elevator of which manufacturer. In order to realize long-distance transmission, a Canbus interface is generally adopted, floor signals and outside call signals need to be interacted, and convenience is provided for floor selection monitoring of centralized monitoring of the elevator. By analyzing Canbus data in advance, the unification of the interfaces of the monitoring system can be easily achieved.
Because the leveling sensor signal is obtained through the elevator serial port, when the elevator runs to a fault floor, the corresponding abnormal change can occur to the leveling sensor signal, and therefore different types of leveling fault judgment can be carried out. And when the fault floor is taken as a passing floor, the fault that the 'no-stop-at-level-floor' fault and the 'circular up-and-down motion' can not level the floor can cause the loss of the signal of the level sensor, so that the fault prediction is carried out, and the intervention is carried out in advance.
Because the elevator signals are collected through the elevator serial ports, the operation data of the elevator is really collected, and the system logically combines the flat-layer non-stop fault, the flat-layer dislocation fault, the bottom-squatting/top-rushing fault and the circulating up-and-down movement fault of the elevator, so that the condition that a manufacturer conceals the fault signals does not exist, the fault judgment success rate is higher, and the elevator system has the characteristics of accuracy.
Because a large number of sensors are not adopted to collect the fault data of the elevator, the elevator data are collected at a Canbus interface of the elevator system, and the data are wirelessly transmitted through the NBIOT network, the construction cost is low, the installation is convenient, and the popularization and the use of the system are facilitated.
The application still provides a judgement device of elevator flat bed trouble, includes: the device comprises a data acquisition unit, a judgment calculation module, an acquisition module, a comparison module and a judgment module; the data acquisition device is used for acquiring a leveling signal and a leveling sensor signal of the elevator, the judgment and calculation module is used for judging whether the elevator is at a target floor, and if so, a normal change sequence of the elevator from a starting floor to the target floor and the leveling sensor signal is calculated; the acquisition module is used for acquiring a real-time change sequence of leveling sensor signals from a starting floor to a target floor; the comparison module is used for comparing whether the normal change sequence is the same as the real-time change sequence or not; the judgment module is used for judging the normal leveling of the elevator if the normal change sequence is the same as the real-time change sequence, and judging the leveling fault of the elevator if the normal change sequence is not the same as the real-time change sequence.
The invention obtains elevator signals from a control box in the elevator and a Canbus interface of an elevator controller, wherein the elevator signals comprise basic signals such as an upper induction signal and a lower induction signal of a leveling sensor, a leveling signal, a target floor signal and the like, and the running state of the elevator and related faults of a series of elevator sensors are judged through logic analysis. Because the elevator signals are obtained from the elevator Canbus interface, the interfaces are uniform and are not limited by different manufacturers and models, and the elevator Canbus interface has the advantages of convenience in popularization and uniformity; when the elevator runs or passes through a fault floor, the corresponding abnormal change of the leveling sensor signal can occur, so that the elevator leveling sensor signal is analyzed, the fault judgment can be carried out, the fault prediction can also be carried out, and the maintenance is carried out in advance to prevent passengers from experiencing the fault. The signal is actually monitored through the Canbus interface, and the fault is analyzed and judged through logic combination, so that the possibility that some faults are intentionally hidden and extinguished by a manufacturer is solved, and the method has the advantage of high accuracy; meanwhile, the monitoring equipment can be used for hanging a node of a Canbus interface of the elevator, a sensor is not required to be additionally arranged in the elevator shaft, and the elevator monitoring system has the advantages of simplicity in installation, low cost and economy.
In this embodiment, the operation data is extracted from the serial interfaces of the elevator controller and the control box (signal processing board), and the data collector is specifically connected as shown in fig. 3. In addition to power and ground (Vcc and Gnd), the Canbus bus has two data lines, Canbus + and Canbus-, that carry signals in a differential manner, allowing bi-directional data transfer.
Referring to fig. 4, the data collector includes: the CAN transceiver, the singlechip and the NBIOT module; the can transceiver is also called controller area network transceiver, and the NBIOT module is also called a narrowband IOT module.
The controller local area network transceiver is electrically connected with the elevator controller and is used for acquiring a leveling signal and a leveling sensor signal from a serial port of the elevator controller, and the serial port is a controller local area network bus; the single chip microcomputer is electrically connected with the controller local area network transceiver and is used for acquiring a leveling signal and a leveling sensor signal from the controller local area network transceiver; the narrow-band Internet of things module is electrically connected with the single chip microcomputer and used for acquiring the leveling signal and the leveling sensor signal from the single chip microcomputer and sending the leveling signal and the leveling sensor signal to a preset terminal.
In this embodiment, the predetermined terminal is the data center described in the above embodiments, and the data center receives the leveling signal and the leveling sensor signal sent by the narrowband internet module, so as to monitor the leveling sensor data in real time, and once the signal abnormality is found, a maintenance worker can be notified in time to intervene in advance.
The data collector also comprises: the power management module is electrically connected with the controller local area network transceiver, the singlechip and the narrow-band Internet of things module; the standby power supply is electrically connected with the power supply management module; and the two ends of the photoelectric isolator are respectively connected with the controller local area network transceiver and the elevator serial port.
In this embodiment, the voltage of the backup power supply is 3.7V; in order not to influence the normal work of the elevator, the controller local area network transceiver is connected with the elevator Canbus interface by adopting the photoelectric isolator, signals can only be output in a single direction and cannot be input, the data acquisition unit is prevented from increasing fault nodes and influencing the original elevator system, and the characteristic that the data acquisition unit is only monitored and is not controlled is reflected.
The controller area network transceiver is used for receiving Canbus serial interface data of the elevator. The controller local area network transceiver is in the model of SN65HVD230, and the device is suitable for serial communication of a can bus with high communication speed, good anti-interference capability and high reliability, and can be well matched with most of single-chip microcomputers used by the elevator.
The model of the singlechip adopts STM32L433 Rx. The single chip microcomputer is an ultra-low power high performance Microprocessor (MCU), is mainly applied to wearable market solutions, and has the performance of an ARM Cortex-M4F inner core. The single chip microcomputer has the important characteristics of seven low-power-consumption modes and a deep low-power-consumption sub-mode, improves the energy-saving effect to the maximum extent under various working conditions, has rich I/O interfaces and serial interfaces and completely meets the design requirements of people.
The model of the narrow-band Internet of things module is BC35-G, the narrow-band Internet of things module is controlled by adopting an AT instruction in a serial port mode, data can be transmitted through mobile IOT butt joint, a deep coverage environment is supported, and signal coverage is strong.
1 group of serial interfaces of the single chip microcomputer are connected with a serial port of an elevator system through photoelectric coupling, and as shown in figure 3, the single chip microcomputer receives operation data of an elevator; and the other group of serial ports are connected with the narrow-band Internet of things module, and the received elevator data including an internal call signal, a door signal, an elevator running signal and a flat sensor induction signal are sent to a data center of the monitoring system in real time in an NBIOT mode for centralized processing.
The whole data acquisition unit has small volume, low cost and convenient installation. One elevator is provided with one data acquisition unit (one node), so that the data acquisition and transmission of the elevator can be realized, and the application requirements are further met.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and in actual implementation, there may be other divisions, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, functional modules in the embodiments of the present invention may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.
It should be noted that, for the sake of simplicity, the above-mentioned method embodiments are described as a series of acts or combinations, but those skilled in the art should understand that the present invention is not limited by the described order of acts, as some steps may be performed in other orders or simultaneously according to the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no acts or modules are necessarily required of the invention.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the above description, for those skilled in the art, there are variations in the specific implementation manners and application ranges according to the ideas of the embodiments of the present invention, and in summary, the content of the description should not be construed as limiting the invention.
Claims (10)
1. A method for judging elevator flat-bed faults is characterized by comprising the following steps:
acquiring a leveling signal and a target floor signal of an elevator, and judging whether the elevator is at a target floor according to the target floor signal;
if yes, calculating a normal change sequence of signals of the elevator from a starting floor to a target floor and leveling sensors, wherein the change of the signals of the leveling sensors comprises no induction signal, an upper induction signal, a lower induction signal and a full induction signal in the first direction and in the static state, the normal change sequence comprises no induction signal, an upper induction signal, a lower induction signal and a first full induction signal which are in the first direction and have a first preset number, the first preset number is the number of floors from the starting floor to the target floor, and the first direction is the ascending direction or the descending direction of the elevator and a full induction signal in the static state;
acquiring a real-time change sequence of the leveling sensor signals from a starting floor to a target floor;
comparing whether the normal variant sequence is identical to the real-time variant sequence;
if the elevator is the same as the standard elevator, judging that the elevator is normally leveled, and if the elevator is not the same as the standard elevator, judging that the elevator has leveling fault.
2. The method of determining an elevator leveling fault according to claim 1,
the method further comprises the following steps:
after the floor leveling signal is obtained, if the current floor of the elevator is not the target floor, judging whether a second preset number of the upper induction signals, the first full induction signals and the lower induction signals exist in the same direction in a change sequence of the floor leveling sensor signal between the starting floor and the current floor, wherein the second preset number is the number of floors between the starting floor and the current floor;
if so, judging that the leveling sensor fails or the leveling baffle falls off;
if not, the flat layer signal is continuously acquired.
3. The method of determining an elevator leveling fault according to claim 1,
after the elevator is judged to have the flat-layer fault, the method further comprises the following steps:
in a first direction, determining whether there are the first predetermined number of the upper sensing signals, the full sensing signals, and a stationary full sensing signal in the real-time variation sequence;
and if so, judging that the flat layer fault is a flat layer non-stop fault.
4. The method of determining an elevator leveling fault according to claim 1,
after the elevator is judged to have the flat-layer fault, the method further comprises the following steps:
in a first direction, judging whether the real-time change sequence has more than the first preset number of the lower induction signals and the first full induction signals, whether the real-time change sequence has the lower induction signals in a static state, and whether the real-time change sequence has the full induction signals in the direction opposite to the first direction;
and if so, judging that the flat layer fault is a flat layer dislocation fault.
5. The method of determining an elevator leveling fault according to claim 1,
after the elevator is judged to have the flat-layer fault, the method further comprises the following steps:
in a first direction, judging whether the upper induction signal and the lower induction signal are adjacent in the real-time change sequence;
if the upper induction signal and the lower induction signal are adjacent, judging whether the upper induction signal and the lower induction signal reciprocate circularly;
and if the elevator does not move up and down circularly, judging that the floor leveling fault is a floor leveling fault which is not capable of moving up and down circularly.
6. The method of determining an elevator leveling fault according to claim 1,
after the elevator is judged to have the flat-layer fault, the method further comprises the following steps:
in a first direction, determining whether the upper sensing signal and the lower sensing signal have adjacent combinations in the real-time change sequence minus the leveling sensor signal of the target floor;
if so, judging that the floors represented by the combination when the upper induction signal is adjacent to the lower induction signal have the floor leveling failure that the elevator does not move up and down in a circulating mode.
7. The method of determining an elevator leveling fault according to claim 1,
after the elevator is judged to have the flat-layer fault, the method further comprises the following steps:
and generating alarm information and sending the alarm information to a receiving end of an elevator maintenance worker.
8. An elevator leveling fault determining apparatus, comprising:
a data collector for obtaining the leveling signal and the leveling sensor signal of the elevator,
the judgment and calculation module is used for judging whether the elevator is on a target floor or not, if so, calculating a normal change sequence of the elevator from a starting floor to the target floor and the leveling sensor signal;
the acquisition module is used for acquiring a real-time change sequence of the leveling sensor signals from a starting floor to a target floor;
a comparison module for comparing whether the normal variation sequence is the same as the real-time variation sequence;
and the judging module is used for judging the normal leveling of the elevator if the normal change sequence is the same as the real-time change sequence, and judging the leveling fault of the elevator if the normal change sequence is not the same as the real-time change sequence.
9. The elevator leveling fault determination device according to claim 8,
the data collector comprises:
the system comprises a controller local area network transceiver, a singlechip and a narrow-band Internet of things module;
the controller local area network transceiver is electrically connected with the elevator controller and is used for acquiring a leveling signal and a leveling sensor signal from a serial port of the elevator controller, and the serial port is a controller local area network bus;
the single chip microcomputer is electrically connected with the controller local area network transceiver and is used for acquiring the leveling signal and the leveling sensor signal from the controller local area network transceiver;
the narrow-band Internet of things module is electrically connected with the single chip microcomputer and is used for acquiring the leveling signal and the leveling sensor signal from the single chip microcomputer and sending the leveling signal and the leveling sensor signal to a preset terminal.
10. The device for determining an elevator leveling fault according to claim 9,
the data collector further comprises:
the power management module is electrically connected with the controller local area network transceiver, the singlechip and the narrow-band Internet of things module;
the standby power supply is electrically connected with the power supply management module;
and the two ends of the photoelectric isolator are respectively connected with the controller local area network transceiver and the elevator serial port.
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