CN114104896B - Elevator traction machine vibration detection method, device, computer equipment and storage medium - Google Patents
Elevator traction machine vibration detection method, device, computer equipment and storage medium Download PDFInfo
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- CN114104896B CN114104896B CN202111437536.6A CN202111437536A CN114104896B CN 114104896 B CN114104896 B CN 114104896B CN 202111437536 A CN202111437536 A CN 202111437536A CN 114104896 B CN114104896 B CN 114104896B
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- position signal
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- elevator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B15/00—Main component parts of mining-hoist winding devices
- B66B15/08—Driving gear
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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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- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
Abstract
The embodiment of the invention discloses a method, a device, computer equipment and a storage medium for detecting the vibration of an elevator traction machine, which comprise the following steps: driving the traction machine to drive the elevator car to move at a preset rotating speed; acquiring the actual time length of the elevator car reaching a preset position; collecting a position signal of the position signal device when the elevator car passes through the position device; determining whether the tractor shakes according to the actual time length, the preset time length and the position signal; if yes, generating fault alarm information and stopping driving the traction machine, wherein the position signal device is a device which is commonly configured in the elevator, namely, the detection of the vibration machine of the traction machine can be realized by adopting the original sensor of the elevator, and an additional special vibration machine sensor is not required to be added, so that the material cost of the elevator is reduced and the installation procedure is reduced.
Description
Technical Field
The embodiment of the invention relates to the technical field of elevator safety, in particular to an elevator traction machine vibration machine detection method, an elevator traction machine vibration machine detection device, computer equipment and a storage medium.
Background
With the development of elevator technology, elevators are widely used in buildings, and particularly, vertical lift elevators can rapidly transport persons to a designated floor in a high-rise building.
When the elevator car is provided with a large load and the traction machine driving module is abnormal, the traction machine vibration machine serving as an elevator host machine can be caused, and when the traction machine vibration machine is serious, the traction machine vibration machine can drive a frame machine beam for fixing the traction machine to vibrate, and the elevator car can vibrate, so that adverse effects are caused on the elevator. At present, a special vibration machine sensor is mainly added on the traction machine, and the vibration machine of the traction machine is detected through the vibration machine sensor, so that the material cost and the installation procedure of the vibration machine sensor are increased.
Disclosure of Invention
The embodiment of the invention provides a method, a device, computer equipment and a storage medium for detecting the vibration of an elevator traction machine, which are used for solving the problems that in the prior art, a special vibration sensor is needed to be added for detecting the vibration of the traction machine, so that the elevator is increased in material cost and installation procedure.
In a first aspect, an embodiment of the present invention provides a method for detecting an elevator traction machine vibration machine, including:
driving the traction machine to drive the elevator car to move at a preset rotating speed; acquiring the actual time length of the elevator car reaching a preset position;
collecting a position signal of a position signal device when the elevator car passes through the position signal device;
determining whether the tractor shakes according to the actual time length, the preset time length and the position signal;
if yes, generating fault alarm information and stopping driving the traction machine.
Optionally, the collecting the position signal of the position signal device when the elevator car passes the position signal device includes:
for each of the position signal devices, when the elevator car passes the current position signal device, collecting a position signal of the current position signal device before the elevator car does not reach the next position signal device, wherein the switch signal comprises an on signal and an off signal.
Optionally, the determining whether the tractor shakes according to the actual time length, the preset time length and the position signal includes:
judging whether the actual time length is longer than a preset time length or not;
if yes, determining that the tractor is abnormal in vibration, and executing the steps of generating fault alarm information and stopping driving the tractor;
if not, judging whether the number of the on signals and the off signals in the position signals is more than or equal to two times;
when the number of the on signals and the number of the off signals are determined to be greater than or equal to two, determining that the tractor is abnormal in vibration, and executing the steps of generating fault alarm information and stopping driving the tractor;
and when the number of the on signals and the off signals is determined to be less than twice, determining that the traction machine is normal.
Optionally, after the driving traction machine drives the elevator car to move at a preset rotation speed, the method further comprises:
collecting a positive pulse signal and a negative pulse signal output by a rotary encoder of the elevator traction motor within a preset time period;
calculating the sum value of the number of the positive pulse signals and the number of the negative pulses to obtain a total pulse number;
calculating the difference value between the total pulse number and the preset pulse number;
judging whether the difference value is smaller than a preset difference value threshold value or not;
if yes, determining that the traction machine is normal;
if not, determining that the tractor is abnormal in vibration, and executing the steps of generating fault alarm information and stopping driving the tractor.
Optionally, after driving the traction machine to drive the elevator car to move at a preset rotation speed, the method further comprises:
acquiring current data of the traction machine;
judging whether the traction machine shakes according to the current data;
if yes, executing the steps of generating fault alarm information and stopping driving the traction machine.
Optionally, the acquiring current data of the traction machine includes:
and acquiring current waveforms and current values of three phase lines for driving the traction machine.
Optionally, the judging whether the tractor is shocked according to the current data includes:
for each phase line, calculating the similarity between the current waveform of the phase line and a preset current waveform;
judging whether the similarity is larger than a preset similarity threshold value or not;
if yes, determining that the traction machine is normal, and calculating a current value of each phase line;
if not, determining that the tractor is abnormal in vibration, and executing the steps of generating fault alarm information and stopping driving the tractor;
for each phase line, calculating the difference value of the current values of the phase line and other phase lines;
judging whether the difference value is smaller than a preset current threshold value or not;
if yes, determining that the traction machine is normal;
if not, determining that the tractor is abnormal in vibration, and executing the steps of generating fault alarm information and stopping driving the tractor;
in a second aspect, an embodiment of the present invention provides an elevator traction machine vibration machine detection device, including:
the traction machine driving module is used for driving the traction machine to drive the elevator car to move at a preset rotating speed;
the time length acquisition module is used for acquiring the actual time length of the elevator car reaching a preset position;
the position signal acquisition module is used for acquiring a position signal of the position signal device when the elevator car passes through the position signal device;
the first vibration machine judging module is used for determining whether the traction machine is subjected to vibration machines or not according to the actual time length, the preset time length and the position signals;
and the vibration machine abnormality alarm module is used for generating fault alarm information and stopping driving the traction machine.
Optionally, the position signal acquisition module includes:
and the signal acquisition sub-module is used for acquiring the position signal of the current position signal device before the elevator car does not reach the next position signal device when the elevator car passes through the current position signal device according to each position signal device, and the switch signals comprise an on signal and an off signal.
Optionally, the first seismometer judging module includes:
the time judging sub-module is used for judging whether the actual time length is greater than a preset time length;
the first vibration machine abnormality determination submodule is used for determining that vibration machine abnormality occurs in the traction machine and executing a vibration machine abnormality alarm module;
the position signal judging sub-module is used for judging whether the number of the on signals and the off signals in the position signals is more than or equal to two times;
a second vibration anomaly determination sub-module, configured to determine that vibration anomaly occurs in the traction machine when the number of the on signal and the off signal is greater than or equal to two, and execute a vibration anomaly alarm module 505;
and the vibration machine traction machine normal determination submodule is used for determining that the traction machine is normal when the number of the on signals and the off signals is determined to be smaller than twice.
Optionally, the method further comprises:
the pulse signal acquisition module is used for acquiring a positive pulse signal and a negative pulse signal output by a rotary encoder of the elevator traction motor within a preset duration;
the total pulse number counting module is used for calculating the sum value of the number of the positive pulse signals and the number of the negative pulses to obtain the total pulse number;
the pulse number difference value calculating module is used for calculating the difference value between the total pulse number and the preset pulse number;
the pulse number judging module is used for judging whether the difference value is smaller than a preset difference value threshold value or not;
the traction machine normal determining module is used for determining that the traction machine is normal;
the second vibration machine abnormality determining module is used for determining that vibration machine abnormality occurs in the traction machine and returning to the vibration machine abnormality executing alarm module.
Optionally, the method further comprises:
the current data acquisition module is used for acquiring current data of the traction machine;
the vibration machine judging module is used for judging whether the traction machine generates vibration machines or not according to the current data;
and the third vibration machine abnormality determining module is used for determining that the vibration machine abnormality occurs in the traction machine and returning to the vibration machine abnormality executing alarm module.
Optionally, the current data acquisition module includes:
and the current waveform and current value acquisition sub-module is used for acquiring the current waveform and current value of the three-phase line driving the traction machine.
Optionally, the vibration machine judging module includes:
the current waveform similarity calculation sub-module is used for calculating the similarity of the current waveform of each phase line and a preset current waveform;
the similarity judging sub-module is used for judging whether the similarity is larger than a preset similarity threshold value or not;
the current value calculation sub-module is used for determining that the traction machine is normal and calculating the current value of each phase line;
the first vibration machine abnormality judging sub-module is used for determining that vibration machine abnormality occurs in the traction machine and executing a vibration machine abnormality alarming module;
the current difference calculation submodule is used for calculating the difference value of the current values of each phase line and other phase lines;
the current difference judging submodule is used for judging whether the difference is smaller than a preset current threshold value or not;
a tractor normal determination submodule for determining that the tractor is normal;
and the second vibration machine abnormality judging sub-module is used for determining that the vibration machine abnormality occurs in the traction machine and executing the vibration machine abnormality alarming module.
In a third aspect, an embodiment of the present invention further provides a computer apparatus, including:
one or more processors;
a memory for storing one or more computer programs;
the one or more computer programs, when executed by the one or more processors, cause the one or more processors to implement the elevator hoisting machine vibration detection method as described in the first aspect.
In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the elevator hoisting machine vibration detection method of any one of the first aspects.
According to the embodiment of the invention, after the elevator car is driven to move by the driving tractor at the preset rotating speed, the actual time length of the elevator car reaching the preset position is obtained, the position signal of the position signal device is collected when the elevator car passes through the position signal device, whether the tractor shakes or not is determined according to the actual time length, the preset time length and the position signal, if yes, fault alarm information is generated and the driving of the tractor is stopped.
Drawings
Fig. 1 is a flowchart of a method for detecting an elevator traction machine vibration machine according to an embodiment of the present invention;
fig. 2 is a schematic view of the structure of an elevator according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for detecting an elevator traction machine vibration machine according to a second embodiment of the present invention;
fig. 4A is a flowchart of a method for detecting an elevator traction machine vibration machine according to a third embodiment of the present invention;
fig. 4B is a schematic diagram of a control system of an elevator according to an embodiment of the invention;
fig. 5 is a schematic structural diagram of an elevator traction machine vibration detecting device according to a fourth embodiment of the present invention;
fig. 6 is a schematic structural diagram of a computer device according to a fifth embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
Example 1
Fig. 1 is a flowchart of a method for detecting an elevator hoisting machine vibration machine according to a first embodiment of the present invention, where the method is applicable to a case of detecting a vibration machine of an elevator hoisting machine, and the method may be performed by an elevator hoisting machine vibration machine detection device, where the elevator hoisting machine vibration machine detection device may be implemented by software and/or hardware, and may be configured in a computer device, for example, may be configured in a computer device for controlling an elevator, and the method specifically includes the following steps:
s101, driving the traction machine to drive the elevator car to move at a preset rotating speed.
As shown in fig. 2, which is a schematic diagram of the structure of an elevator according to an embodiment of the invention, in one example of the embodiment of the invention, the hoisting machine may be an ac motor, for example, a three-phase current driven ac motor, and the output shaft of the hoisting machine may be coupled to the hoisting sheave via a reduction mechanism to drive the hoisting rope via the hoisting sheave, on which the elevator car can move up and down in the elevator shaft.
As shown in fig. 2, end station annunciators may be disposed at both ends of the elevator hoistway to detect that the elevator car reaches both ends of the elevator hoistway, and floor annunciators are disposed at positions of each floor level in the elevator hoistway to control the elevator car to stop moving when the elevator car reaches each floor detected by the floor annunciators, where the end station annunciators and the floor annunciators are both original devices in the elevator and may be used as position annunciators, and of course, other devices in the elevator may be used as position annunciators.
In the embodiment of the invention, when detecting whether the traction machine shakes or not, the traction motor can be driven to drive the elevator car to move at the preset rotating speed, in one example, the traction machine can be driven to move at the preset rotating speed when the elevator car is empty, the traction machine can be driven to move at the preset rotating speed when the elevator car is heavy-loaded, the traction machine can be driven to move at the preset rotating speed according to the preset period, and the like.
S102, acquiring the actual time length of the elevator car reaching a preset position.
In one example, the preset position may be a position of a designated floor, such as a position of one or more floor annunciators, the floor-to-hoistway bottom position is fixed, the floor-to-floor position is fixed, the actual length of time that the elevator car in operation reaches the preset position may be counted when the position of the designated floor is the preset position, the actual length of time is the length of time that the elevator car is in operation from the starting position to the preset position, and the elevator hoistway bottom is taken as the starting position, a timer may be started to count when the elevator starts to operate from the elevator hoistway bottom, and the count length of time of the timer is the actual length of time that the elevator car reaches the preset position when the elevator car reaches the preset position. Of course, in practical application, the actual time length of the elevator car reaching the second preset position from the first preset position may be obtained, for example, the actual time length of the elevator car reaching the third floor from the first floor, at this time, the elevator car may output a signal with a timestamp when reaching one floor, the actual time length of the elevator car reaching the third floor from the first floor may be calculated through the timestamp of the signal, and of course, the actual time length of the elevator car reaching the preset position may also be obtained through other manners, which is not limited in the embodiment of the present invention.
S103, acquiring a position signal of the position signal device when the elevator car passes through the position signal device.
As shown in fig. 2, taking floor signaling devices and end station signaling devices as examples of position signaling devices, elevator cars are provided with hoistway position sensors that can detect the floor signaling devices and end station signaling devices, the hoistway position sensors output position signals to a control system when the position signaling devices are sensed to determine the floor or position reached by the elevator car, the floor signaling devices, together with the hoistway position sensors, can provide the position signals of the elevator car, in one example, the hoistway position sensors output off signals when the elevator car does not reach the floor signaling device position, and on signals when the elevator car arrives.
For example, the hoistway position sensor and the position signal device can be photoelectric sensing systems, namely, the hoistway position sensor outputs signal light and receives signal light, and the position signal device can prevent the signal light emitted by the hoistway position sensor from being received by the hoistway position sensor after being reflected, so that floor position detection is realized through the principle. Of course, the position signal device fixed in the elevator shaft can also sense the signals output after the components on the elevator car are sensed, for example, the position signal device can output the position signals after the end station signal device senses that the elevator car arrives, and the embodiment of the invention does not limit whether the position signals are output by the components on the elevator car or the components on the elevator shaft.
Taking a floor signaling device as an example, for each floor signaling device, the current floor signaling device causes a position signal generated by a hoistway position sensor to include an on signal and an off signal before the elevator car does not reach the next floor signaling device as the elevator car passes the current floor signaling device.
And S104, determining whether the tractor shakes according to the actual time length, the preset time length and the position signal.
In an alternative embodiment of the invention, the preset duration is a theoretical duration that the elevator car reaches a preset position when the tractor is normal and operates at a preset rotation speed, then whether the actual duration is greater than the preset duration can be firstly judged, if yes, it is determined that the tractor is abnormal, S105 can be executed, namely, fault alarm information is generated and the tractor is stopped to be driven, if not, it is determined that the number of on signals and off signals in the position signals is greater than or equal to two times, when it is determined that the number of on signals and off signals is greater than or equal to two times, it is determined that the tractor is abnormal, S105 can be executed, namely, fault alarm information is generated and the driving of the tractor is stopped, and when it is determined that the number of on signals and off signals is less than two times, it is determined that the tractor is normal.
In practical application, when the traction machine shakes, along with the abnormality of traction wheel rotation, the larger the traction machine shakes, the larger the abnormality of traction wheel rotation, the traction machine finally drives the frame Liang Zhenji for fixing the traction machine, typically, the traction wheel rotates in a short distance forward and backward direction (for example, forward rotates by 1-2 cm and backward rotates by 1-2 cm) at one position, the forward and backward distances are almost consistent in one cycle, the traction wheel does not rotate substantially, the reciprocating motion of the elevator car at one position is caused, the moving speed of the elevator car becomes smaller, the actual time of the elevator car reaching the preset position becomes longer, based on this, if the actual time of the elevator car reaching the preset position is longer than the preset time, the occurrence of the vibration abnormality of the traction machine is determined, or after detecting that the elevator car at a certain position signal device causes the position signal device to output an on signal, the off signal is output in a short time, then the elevator car is illustrated to reciprocate at a certain position, otherwise, the abnormality of the traction machine can be determined, and the detection of the vibration of the traction machine is continued without the abnormality of the S102.
And S105, generating fault alarm information and stopping driving the traction machine.
After determining that the machine vibration of the traction machine is abnormal, fault alarm information, which may be text information, graphic information or audible and visual alarm information, may be generated and transmitted to the designated terminal, and in order to prevent the machine vibration of the traction machine from being further deteriorated, the power supply of the traction machine may be cut off to stop the operation of the traction machine.
According to the embodiment of the invention, whether the tractor shakes or not is determined by the actual time when the elevator car passes through the preset position and the position signal of the position signal device, wherein the position signal device is a sensor which is commonly configured in an elevator, namely, the elevator original sensor is adopted for detecting the elevator shake of the tractor, no additional special shake sensor is needed, the elevator material cost is reduced, and the installation procedure is reduced.
Further, the position signal of the position signal device comprises an off signal and an on signal, when the off signal and the on signal of a certain position signal device are larger than or equal to two times or the actual time length reaching the preset position is longer than the preset time length, the abnormal vibration of the tractor is determined, the characteristics of vibration of the tractor are fully utilized, a special vibration sensor is not needed, and the detection method is simple.
Example two
Fig. 3 is a flowchart of a method for detecting an elevator traction machine vibration machine according to a second embodiment of the present invention, where the method in this embodiment specifically includes the following steps:
s301, driving the traction machine to drive the elevator car to move at a preset rotating speed.
As shown in fig. 2, which is a schematic diagram of the structure of an elevator according to an embodiment of the invention, in one example of the embodiment of the invention, the hoisting machine may be an ac motor, for example, a three-phase current driven ac motor, and the output shaft of the hoisting machine may be coupled to the hoisting sheave via a reduction mechanism to drive the hoisting rope via the hoisting sheave, on which the elevator car can move up and down in the elevator shaft.
As shown in fig. 2, end station annunciators may be provided at both ends of the elevator hoistway to detect that the elevator car reaches both ends of the elevator hoistway, and floor annunciators may be provided at positions of each floor level in the elevator hoistway to control the elevator car to stop moving when the elevator car reaches each floor through the floor annunciators, and the end station annunciators and the floor annunciators are original devices in the elevator and may be used as position annunciators.
In the embodiment of the invention, when detecting whether the tractor shakes or not, the traction motor can be driven to drive the elevator car to move at the preset rotating speed, in one example, the tractor can be driven to move at the preset rotating speed when the elevator car is empty, the tractor can be driven to move at the preset rotating speed when the elevator car load is larger than the preset value, the tractor can be driven to move at the preset rotating speed according to the preset period, and the like.
S302, collecting a positive pulse signal and a negative pulse signal output by a rotary encoder of the elevator traction motor within a preset time period.
As shown in fig. 2, the elevator further includes a rotary encoder that can be used to measure the rotation of the traction sheave, and that outputs a positive pulse signal when the traction sheave rotates forward and a negative pulse signal when the traction sheave rotates backward, the positive pulse signal and the negative pulse signal output by the rotary encoder can be collected for a preset period of time.
S303, calculating the sum value of the number of the positive pulse signals and the number of the negative pulse signals to obtain the total pulse number.
Because the number of positive pulses collected in the preset time period is fixed when the traction machine operates at the preset rotating speed, the total number of the positive pulses collected in the preset time period is the sum of the number of the positive pulse signals and the number of the negative pulses, and if the traction machine shakes, the traction wheel rotates positively and reversely, the number of the positive pulse signals and the number of the negative pulse signals can be accumulated to obtain the total number of the pulses.
S304, calculating the difference value between the total pulse number and the preset pulse number.
The preset pulse number can be the number of positive pulse signals output when the tractor is free of vibration and runs for a preset time period at a preset rotating speed, and the difference between the total pulse number and the preset pulse number can be calculated to serve as a traction wheel rotation error.
S305, judging whether the difference value is smaller than a preset difference value threshold value.
If the difference is less than the preset difference threshold, indicating that the traction machine is in vibration but within an acceptable range, S306 may be performed to determine that the traction machine is normal.
S306, determining that the traction machine is normal.
After determining that the hoisting machine is normal, the process may return to S302 to continue checking the hoisting machine.
S307, determining that the tractor is abnormal in vibration, generating fault alarm information and stopping driving the tractor.
If the difference value is larger than a preset difference value threshold value, the situation that the tractor has a vibration machine and the normal operation of an elevator is influenced is indicated, the situation that the vibration machine is abnormal in the tractor can be determined, fault alarm information is generated and the tractor is stopped to be driven, for example, the fault alarm information can be text information, graphic information or audible and visual alarm information, and in order to avoid further deterioration of the vibration machine of the tractor, a power supply of the tractor can be cut off to stop the operation of the tractor.
After driving a traction machine to drive an elevator car to move at a preset rotating speed, collecting positive pulse signals and negative pulse signals output by a rotary encoder of an elevator traction motor within a preset time period, counting the number of the positive pulse signals and the number of the negative pulse signals to obtain a total pulse number, calculating a difference value between the total pulse number and the preset pulse number, judging whether the difference value is smaller than a preset difference value threshold value, and if yes, determining that the traction machine is normal; if not, determining that the tractor is abnormal in vibration, generating fault alarm information and stopping driving the tractor. The method has the advantages that whether the traction machine is abnormal or not can be determined through the number of positive pulse signals and negative pulse signals output by the rotary encoder of the original traction machine on the elevator, an additional special vibration machine sensor is not required to be added, the material cost of the elevator is reduced, and the installation procedure is reduced.
Example III
Fig. 4A is a flowchart of a method for detecting an elevator traction machine vibration machine according to a third embodiment of the present invention, where the method in this embodiment specifically includes the following steps:
s401, driving the traction machine to drive the elevator car to move at a preset rotating speed.
As shown in fig. 2, which is a schematic diagram of the structure of an elevator according to an embodiment of the invention, in one example of the embodiment of the invention, the hoisting machine may be a motor, such as a three-phase current-driven ac motor, and the output shaft of the hoisting machine may be coupled to the hoisting sheave via a reduction mechanism to drive the hoisting rope via the hoisting sheave, on which the elevator car can move up and down in the elevator shaft.
As shown in fig. 2, end station annunciators may be provided at both ends of the elevator hoistway to detect that the elevator car reaches both ends of the elevator hoistway, and floor annunciators are provided at positions of each floor level in the elevator hoistway to control the elevator car to stop moving when the elevator car reaches each floor through the floor annunciators, both of which are original devices in the elevator.
In the embodiment of the invention, when detecting whether the tractor shakes or not, the traction motor can be driven to drive the elevator car to move at the preset rotating speed, in one example, the tractor can be driven to move at the preset rotating speed when the elevator car is empty, the tractor can be driven to move at the preset rotating speed when the elevator car load is larger than the preset value, the tractor can be driven to move at the preset rotating speed according to the preset period, and the like.
S402, acquiring current data of the traction machine.
As shown in fig. 4B, which is a schematic diagram of a control system of an elevator according to an embodiment of the present invention, when the traction machine according to the embodiment of the present invention is driven by inputting current through three power lines, current waveforms and current values of currents of three power lines (three phase lines) driving the traction machine can be obtained through current detection.
S403, judging whether the tractor is vibrated according to the current data.
In an optional embodiment of the present invention, for each phase line, calculating the similarity between the current waveform of the phase line and the preset current waveform, determining whether the similarity is greater than a preset similarity threshold, if yes, determining that the traction machine is normal and calculating the current value of each phase line, if no, determining that the traction machine is abnormal, executing S404 to generate fault alarm information and stopping driving the traction machine, and for each phase line, calculating the difference value of the current values of the phase line and other phase lines; judging whether the difference value is smaller than a preset current threshold value or not; if yes, determining that the tractor is normal, returning to S402 to continuously detect the tractor vibration; if not, it is determined that the hoisting machine is abnormal, S404 is performed to generate fault warning information and stop driving the hoisting machine.
Specifically, when the traction machine vibration machine is abnormal, the acquired current waveform can be compared with a preset current waveform, in one example, the similarity of the current waveform of each phase line and the preset current waveform can be calculated, the similarity can be L1 distance, L2 distance, cosine distance and the like, the mode of calculating the similarity is not limited, the higher the similarity is, the acquired current waveform is similar to the preset current waveform, otherwise, when the similarity of the current waveform of one phase line and the preset current waveform is smaller than a preset similarity threshold value, the traction machine vibration machine is abnormal, S404 is executed to generate fault alarm information and stop driving the traction machine.
When the similarity between the current waveforms of the three phase lines and the preset current waveform is greater than the preset similarity threshold, the effective values of the currents of the three phase lines can be further calculated, for each phase line, for example, the average value of the currents of a plurality of periods can be calculated as the effective current value, then the difference value between the effective current value of the phase line and the effective current values of the other two phase lines is calculated, if the difference value is within the preset current threshold, the abnormal condition of the tractor is determined, the operation returns to the step S402 to continuously detect whether the tractor is abnormal, otherwise, the abnormal condition of the tractor is determined, and the step S404 is executed to generate fault alarm information and stop driving the tractor.
S404, generating fault alarm information and stopping driving the traction machine.
In one example, the fault alert information may be a text message, a graphic message, or an audible and visual alert message, and to avoid further deterioration of the machine, the machine power may be turned off to stop the machine.
According to the embodiment of the invention, after the tractor is driven to drive the elevator car to move at the preset rotating speed, the current data of the tractor is obtained, whether the tractor shakes or not is judged according to the current data, fault alarm information is generated when the tractor is determined to shake and the tractor is stopped to be driven, so that the purpose that whether the tractor shakes or not can be determined by adopting the original current detection module of the elevator, an additional special shake sensor is not needed, the elevator material cost is reduced, and the installation procedure is reduced.
Further, whether the tractor shakes or not is comprehensively judged through the similarity of the current waveforms and the error of the current effective value, and the accuracy of the judgment result of the tractor shakes is improved.
Example IV
Fig. 5 is a schematic structural diagram of an elevator traction machine vibration machine detection device according to a fourth embodiment of the present invention, which specifically may include the following modules:
the traction machine driving module 501 is used for driving the traction machine to drive the elevator car to move at a preset rotating speed;
an actual duration obtaining module 502, configured to obtain an actual duration of the elevator car reaching a preset position;
a position signal acquisition module 503, configured to acquire a position signal of the position signal device when the elevator car passes through the position signal device;
a first vibration judging module 504, configured to determine whether a vibration occurs to the traction machine according to the actual duration, the preset duration, and the position signal;
and the vibration machine abnormality alarm module 505 is used for generating fault alarm information and stopping driving the traction machine.
Optionally, the position signal acquisition module 503 includes:
and the signal acquisition sub-module is used for acquiring the position signal of the current position signal device before the elevator car does not reach the next position signal device when the elevator car passes through the current position signal device according to each position signal device, and the position signals comprise an on signal and an off signal.
Optionally, the first seismometer determining module 504 includes:
the time judging sub-module is used for judging whether the actual time length is greater than a preset time length;
a first vibration machine abnormality determination sub-module, configured to determine that vibration machine abnormality occurs in the traction machine, and execute a vibration machine abnormality alarm module 505;
the position signal judging sub-module is used for judging whether the number of the on signals and the off signals in the position signals is more than or equal to two times;
a second vibration anomaly determination sub-module, configured to determine that vibration anomaly occurs in the traction machine when the number of the on signal and the off signal is greater than or equal to two, and execute a vibration anomaly alarm module 505;
and the vibration machine traction machine normal determination submodule is used for determining that the traction machine is normal when the number of the on signals and the off signals is determined to be smaller than twice.
Optionally, the method further comprises:
the pulse signal acquisition module is used for acquiring a positive pulse signal and a negative pulse signal output by a rotary encoder of the elevator traction motor within a preset duration;
the total pulse number statistics module is used for calculating the sum value of the number of the positive pulse signals and the number of the negative pulse signals;
the pulse number difference value calculating module is used for calculating the difference value between the total pulse number and the preset pulse number;
the pulse number judging module is used for judging whether the difference value is smaller than a preset difference value threshold value or not;
the traction machine normal determining module is used for determining that the traction machine is normal;
the second vibration machine abnormality determining module is configured to determine that vibration machine abnormality occurs in the traction machine, and return to the executing vibration machine abnormality alarm module 505.
Optionally, the method further comprises:
the current data acquisition module is used for acquiring current data of the traction machine;
the vibration machine judging module is used for judging whether the traction machine generates vibration machines or not according to the current data;
and the third vibration machine abnormality determining module is used for determining that vibration machine abnormality occurs in the traction machine and returning to the vibration machine abnormality executing module 505.
Optionally, the current data acquisition module includes:
and the current waveform and current value acquisition sub-module is used for acquiring the current waveform and current value of the three-phase line driving the traction machine.
Optionally, the vibration machine judging module includes:
the current waveform similarity calculation sub-module is used for calculating the similarity of the current waveform of each phase line and a preset current waveform;
the similarity judging sub-module is used for judging whether the similarity is larger than a preset similarity threshold value or not;
the current value calculation sub-module is used for determining that the traction machine is normal and calculating the current value of each phase line;
the first vibration machine abnormality judging sub-module is used for determining that vibration machine abnormality occurs in the traction machine and executing a vibration machine abnormality alarming module 505;
the current difference calculation submodule is used for calculating the difference value of the current values of each phase line and other phase lines;
the current difference judging submodule is used for judging whether the difference is smaller than a preset current threshold value or not;
a tractor normal determination submodule for determining that the tractor is normal;
the second vibration machine abnormality judging sub-module is used for determining that vibration machine abnormality occurs in the traction machine and executing a vibration machine abnormality alarming module 505;
the elevator traction machine vibration detection device provided by the embodiment of the invention can execute the elevator traction machine vibration detection method provided by any of the first to third embodiments of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Example five
Fig. 6 is a schematic structural diagram of a computer device according to a fifth embodiment of the present invention. As shown in fig. 6, the computer apparatus includes a processor 600, a memory 601, a communication module 602, an input device 603, an output device 604, and a display screen 605; the number of processors 600 in the computer device may be one or more, one processor 600 being taken as an example in fig. 6; the processor 600, memory 601, communication module 602, input device 603, output device 604, and display 605 in the computer device may be connected by a bus or other means, for example by a bus connection in fig. 6.
The memory 601 is a computer readable storage medium, and may be used to store a software program, a computer executable program, and modules corresponding to the elevator hoisting machine vibration detection method in this embodiment (for example, a hoisting machine driving module 501, an actual time length acquisition module 502, a position signal acquisition module 503, a first vibration determination module 504, and a vibration abnormality alarm module 505 in the elevator hoisting machine vibration detection device as shown in fig. 5). The processor 600 executes various functional applications of the computer device and data processing by running the software programs, instructions and modules stored in the memory 601, i.e., implements the above-described elevator traction machine vibration detection method.
The memory 601 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for functions; the storage data area may store data created according to the use of the computer device, etc. In addition, the memory 601 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, memory 601 may further include memory located remotely from processor 600, which may be connected to a computer device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
And the communication module 602 is used for establishing connection with the display screen and realizing data interaction with the display screen.
The input means 603 may be used for receiving input numeric or character information and generating key signal inputs related to user settings and function control of the device/terminal/server, as well as a camera for capturing images and a pickup device for capturing audio data.
The output means 604 may comprise an audio device such as a speaker.
The specific composition of the input device 603 and the output device 604 may be set according to the actual situation.
The processor 600 executes various functional applications of the apparatus and data processing by running software programs, instructions and modules stored in the memory 601, i.e., implements the above-described elevator hoisting machine vibration detection method.
The computer equipment provided by the embodiment can execute the elevator traction machine vibration machine detection method provided by any embodiment of the invention, and particularly has corresponding functions and beneficial effects.
Example six
The sixth embodiment of the present invention also provides a computer readable storage medium having stored thereon a computer program which when executed by a processor realizes an elevator hoisting machine vibration detection method, the elevator hoisting machine vibration detection method comprising:
driving the traction machine to drive the elevator car to move at a preset rotating speed;
acquiring the actual time length of the elevator car reaching a preset position;
collecting a position signal of a position signal device when the elevator car passes through the position signal device;
determining whether the tractor shakes according to the actual time length, the preset time length and the position signal;
if yes, generating fault alarm information and stopping driving the traction machine.
Of course, the computer readable storage medium provided by the embodiments of the present invention, the computer program thereof is not limited to the method operations described above, and the related operations in the elevator traction machine vibration detection method provided by any embodiment of the present invention may also be performed.
From the above description of embodiments, it will be clear to a person skilled in the art that the present invention may be implemented by means of software and necessary general purpose hardware, but of course also by means of hardware, although in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, etc., comprising instructions for causing a computer device, such as a main control computer of an elevator, to perform the elevator hoisting machine vibration detection method according to the embodiments of the present invention.
It should be noted that, in the embodiment of the elevator traction machine vibration machine detection device, each unit and module included are only divided according to the functional logic, but not limited to the above-mentioned division, so long as the corresponding functions can be realized; in addition, the specific names of the functional units are also only for distinguishing from each other, and are not used to limit the protection scope of the present invention.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (6)
1. The elevator traction machine vibration machine detection method is characterized by comprising the following steps of:
driving the traction machine to drive the elevator car to move at a preset rotating speed;
acquiring the actual time length of the elevator car reaching a preset position;
collecting a position signal of a position signal device when the elevator car passes through the position signal device;
determining whether the tractor shakes according to the actual time length, the preset time length and the position signal;
if yes, generating fault alarm information and stopping driving the traction machine.
2. The traction machine vibration detection method according to claim 1, wherein the acquiring the position signal of the position signal device when the elevator car passes the position signal device includes:
for each of the position signal devices, when the elevator car passes the current position signal device, a position signal of the current position signal device before the elevator car does not reach the next position signal device is acquired, wherein the position signal comprises an on signal and an off signal.
3. The method for detecting the vibration of the traction machine according to claim 2, wherein the determining whether the vibration of the traction machine occurs according to the actual time period, the preset time period and the position signal comprises:
judging whether the actual time length is longer than a preset time length or not;
if yes, determining that the tractor is abnormal in vibration, and executing the steps of generating fault alarm information and stopping driving the tractor;
if not, judging whether the number of the on signals and the off signals in the position signals is more than or equal to two times;
when the number of the on signals and the number of the off signals are determined to be greater than or equal to two, determining that the tractor is abnormal in vibration, and executing the steps of generating fault alarm information and stopping driving the tractor;
and when the number of the on signals and the off signals is determined to be less than twice, determining that the traction machine is normal.
4. An elevator hauler shakes quick-witted detection device, characterized by comprising:
the traction machine driving module is used for driving the traction machine to drive the elevator car to move at a preset rotating speed;
the actual duration acquisition module is used for acquiring the actual duration of the elevator car reaching a preset position;
the position signal acquisition module is used for acquiring a position signal of the position signal device when the elevator car passes through the position signal device;
the first vibration machine judging module is used for determining whether the traction machine is subjected to vibration machines or not according to the actual time length, the preset time length and the position signals;
and the vibration machine abnormality alarm module is used for generating fault alarm information and stopping driving the traction machine.
5. A computer device, the computer device comprising:
one or more processors;
a memory for storing one or more computer programs;
the one or more computer programs, when executed by the one or more processors, cause the one or more processors to implement the elevator machine vibration detection method of any one of claims 1-3.
6. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the elevator hoisting machine vibration detection method according to any one of claims 1-3.
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