CN112225028A - Current-sensing elevator operation data acquisition system and acquisition method thereof - Google Patents
Current-sensing elevator operation data acquisition system and acquisition method thereof Download PDFInfo
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- CN112225028A CN112225028A CN202011496212.5A CN202011496212A CN112225028A CN 112225028 A CN112225028 A CN 112225028A CN 202011496212 A CN202011496212 A CN 202011496212A CN 112225028 A CN112225028 A CN 112225028A
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C22/00—Measuring distance traversed on the ground by vehicles, persons, animals or other moving solid bodies, e.g. using odometers, using pedometers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/16—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by evaluating the time-derivative of a measured speed signal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
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Abstract
The invention relates to a current-sensing elevator operation data acquisition system and an acquisition method thereof, wherein the system comprises a traction machine, a traction sheave, an electric induction module and an elevator control module; the electric induction module comprises a permanent magnet set, a conductive coil and a current monitoring module, wherein the conductive coil is electrically connected with the current monitoring module; the permanent magnet set or the conductive coil is arranged on the traction sheave and rotates along with the rotation of the traction sheave so that the conductive coil cuts the magnetic induction lines to generate corresponding electric signals; the elevator control module is electrically connected with the current monitoring module, and the elevator control module calculates the rolling travel and/or the rolling speed and/or the forward and reverse rotation of the traction sheave according to the electric signals fed back by the current monitoring module so as to correspondingly obtain the running distance and/or the running speed and/or the up-down and/or stopping positions of the car. The elevator operation data acquisition system can effectively acquire elevator operation data, is accurate in data and reliable in performance, and can be universally used for elevators of different models.
Description
Technical Field
The invention relates to elevator auxiliary equipment, in particular to a current-sensing elevator operation data acquisition system and an acquisition method thereof.
Background
The collected operation data can be sent to a control center for centralized control management and monitoring, so that the control center can control the normal operation of the elevator according to the operation data or timely take corresponding measures under abnormal/emergency conditions.
At present, an elevator is generally controlled by an RS485 or CAN BUS in an elevator control system, and operation data is displayed on corresponding floors and cars; when the running state information of the car is obtained, various technical means are usually adopted to be connected with an elevator controller, and the running state information of the car is read and collected; however, since there are elevators of different types and kinds in the market and the communication protocols used by different elevators are often different, the communication protocol, elevator parameters, etc. of the elevator of the relevant type must be known when the elevator operation state information is read from the elevator controllers of the elevators of different types, which brings difficulty to information reading and leads to difficulty in providing standard communication data related to the elevator operation state information for elevator remote monitoring management by users; in addition, the current collection mode of the elevator operation data in the market generally adopts a contact type detection scheme, so that the accuracy of operation data collection is influenced, and the normal operation of the elevator can be interfered; in addition, directly reading the elevator running state information from the elevator controller means that reliable elevator running state information cannot be continuously provided when the elevator controller fails depending on the state of the elevator controller. It is thus clear that it is necessary to design a system capable of collecting and analyzing the operating data of elevators of different models.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides the current-sensing elevator operation data acquisition system and the current-sensing elevator operation data acquisition method.
The purpose of the invention is realized as follows:
a current-sensing elevator operation data acquisition system comprises a traction machine and a traction wheel, wherein the output end of the traction machine is in transmission connection with the traction wheel so as to drive the traction wheel to rotate; the elevator control system also comprises an electric induction module used for generating an electric signal and an elevator control module used for analyzing and processing the electric signal; the electric induction module comprises a permanent magnet group used for generating magnetic induction lines, a conductive coil used for cutting the magnetic induction lines to generate electric signals, and a current monitoring module used for collecting the electric signals, wherein the conductive coil is electrically connected with the current monitoring module; the permanent magnet set or the conductive coil is arranged on the traction sheave and rotates along with the rotation of the traction sheave so that the conductive coil cuts the magnetic induction lines to generate corresponding electric signals; the elevator control module is electrically connected with the current monitoring module and the cloud background in communication connection, and the elevator control module calculates the rolling travel and/or the rolling speed and/or the forward and reverse rotation of the traction sheave according to the electric signals fed back by the current monitoring module so as to correspondingly obtain the running distance and/or the running speed and/or the up and down movement and/or the stopping position of the car.
When the permanent magnet group is arranged on the traction sheave, the permanent magnet group comprises a first permanent magnet and a second permanent magnet which correspond to each other, the first permanent magnet and the second permanent magnet are respectively arranged on the traction sheave, a magnetic induction line is generated between the first permanent magnet and the second permanent magnet, and a conductive coil is arranged between the first permanent magnet and the second permanent magnet; the two permanent magnets respectively do circular motion along with the rotation of the traction sheave.
And the elevator control module is provided with a time recording module for recording the rolling time of the traction sheave.
The elevator control system further comprises an electricity storage module used for storing electric energy generated by cutting the magnetic induction wire by the conductive coil, and the electricity storage module is electrically connected with the elevator control module to supply power to the elevator control module.
The elevator control module comprises a central main control module for analyzing and processing the electric signals, a memory for storing related data and a network communication module for realizing data transmission; the current monitoring module is connected with the central main control module, and the current monitoring module sends the acquired electric signals to the central main control module, and the electric signals are analyzed and processed by the central main control module and converted into corresponding elevator operation data; the central main control module is respectively connected with the network communication module and the storage; and the central main control module is in data transmission with an external upper computer through the network communication module.
The central main control module is a programmable logic controller; the memory is at least used for storing basic parameters of the elevator and elevator operation data; the external upper computer comprises a building control center and a remote monitoring center.
A method for acquiring a current-sensing elevator operation data acquisition system,
the method comprises the steps that firstly, basic information of an elevator is input into a cloud background, and each data of a car in a normal running state is detected by using a speed measuring sensor;
secondly, enabling the lift car to respectively execute an ascending task and a descending task under the no-load state and the full-load state; the elevator control module calculates and records the running uniform speed V1 and the running acceleration a of the car under the state of no load and full load through a speed measuring sensorAddingRunning deceleration aReducingAnd a running distance S; the method comprises the steps that a current monitoring module is combined to collect electric signals and related time information generated by cutting magnetic induction lines by conductive coils in no-load and full-load states, and a cloud background automatically establishes a parameter model for displaying the relation between the electric signals and normal operation data of a lift car;
and thirdly, when the elevator is used daily, the application of a speed measuring sensor is cancelled, an electric signal generated by cutting the magnetic induction wire by the conductive coil in an actual state is collected by the current monitoring module, and the cloud background can directly obtain each actual operation data of the elevator car according to the relation between the electric signal and the operation data of the elevator car in the parameter model.
Acquisition of running uniform velocity V1: when the electric signal is constant, the elevator control module judges that the elevator car is in a constant speed state, and the speed detected by the speed measuring sensor in the state is taken as the running average speed V1;
running acceleration aAddingThe collection:when the electric signal rises, the elevator control module judges that the elevator car is in an acceleration state, and obtains the running acceleration a of the elevator car through an acceleration formulaAdding；
Running deceleration aReducingThe collection: when the electric signal is decreased, the elevator control module judges that the elevator car is in a deceleration state, and obtains the running deceleration a of the elevator car through an acceleration formulaReducing；
Collecting the running distance S: according to the running uniform speed V1 and the running acceleration aAddingRunning deceleration aReducingAnd obtaining the running distance S of the car through a displacement formula according to the running time T of the car.
Determining ascending and descending, wherein when the lift car ascends, the current monitoring module monitors the direction of current in the electric signal and determines that the current flows in the forward direction at the moment, and when the lift car descends, the current monitoring module monitors the direction of the current in the electric signal and determines that the current flows in the reverse direction at the moment; in the daily operation of the car, the elevator control module judges whether the car moves upwards or downwards according to the direction of current in the electric signal.
And determining the position of the car, and obtaining the floor where the car is located by the elevator control module according to the running distance S of the car and the height h of each floor.
The invention has the following beneficial effects:
the system is characterized in that a permanent magnet group or a conductive coil is arranged on a traction sheave, when the traction sheave rotates, the conductive coil cuts a magnetic induction line to generate a corresponding electric signal, an elevator control module analyzes and processes the electric signal to effectively monitor running data such as running distance, running speed, up-down movement, stopping position and the like of a car, and the elevator control module compares and analyzes the electric signal with a parameter model to monitor whether the elevator runs normally, stops floors and other related information; specifically, the elevator operation data acquisition system adopts a non-contact current induction acquisition elevator traction sheave mode to accurately acquire the operation data of the elevator, wherein the operation data comprises operation speed, operation distance, upward or downward movement of a car, working time (the time for putting the elevator into use), operation time (the time from starting to stopping in a single task of the car), dwell time and the like; the system is suitable for elevators of any brand and any model, has the advantages of low cost, simple and convenient installation, no dangerous construction for installers and the like, and the collected elevator operation data can provide a basis for elevator maintenance as required, elevator fault judgment, smart city construction and the like;
in addition, the current-sensing elevator operation data acquisition system has the characteristics of convenience, rapidness, more accuracy and reliability, no need of overcoming special technical limit, low installation/manufacturing cost, reliable performance and the like because the acquisition mode of the operation data is irrelevant to the communication protocol of the elevator, and the current-sensing elevator operation data acquisition system is applicable to different elevators and has strong universality;
in addition, the running data of the elevator is connected with an external upper computer through a network communication module, so that a user can monitor the running state of the elevator in real time, and the use safety of the elevator is effectively ensured.
Drawings
Fig. 1 is a partial structural view of an elevator in an embodiment of the present invention.
Fig. 2 is a schematic diagram of the lifting of the car in an embodiment of the present invention.
Fig. 3 is a schematic view of an electric induction module and a traction sheave assembly according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of the electric sensing module identifying the forward rotation of the traction sheave according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of the electric sensing module identifying the reverse rotation of the traction sheave according to an embodiment of the present invention.
FIG. 6 is a schematic diagram of electrical signals and real-time velocity acquisition in an embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and examples.
Referring to fig. 1 to 5, the current sensing elevator operation data acquisition system includes a traction machine 1, a traction sheave 2, a guide sheave 8 and a counterweight 9, the traction machineThe output end transmission of machine 1 is connected traction sheave 2 and is rotated in order to drive it, and traction sheave 2 passes through wire rope 3 and drives 7 completion elevating movement of car and open and stop work, and wire rope 3 is respectively around traction sheave 2 and leading wheel 8, and 3 one ends of wire rope connect 7, the other end is connected counterweight 9: the system also comprises an electric induction module 4 for generating electric signals and an elevator control module for analyzing and processing the electric signals; the electric induction module 4 comprises a permanent magnet group for generating magnetic induction lines 403, a conductive coil 404 for cutting the magnetic induction lines 403 to generate electric signals, and a current monitoring module 405 for collecting the electric signals, wherein the conductive coil 404 is electrically connected with the current monitoring module 405 and is in communication connection with a cloud background; the permanent magnet set (or the conductive coil 404) is arranged on the traction sheave 2 and rotates along with the rotation of the traction sheave 2, so that the conductive coil 404 cuts the magnetic induction line 403 to generate a corresponding electric signal; the elevator control module is electrically connected with the current monitoring module 405, and the elevator control module calculates the rolling travel and/or the rolling speed and/or the forward and reverse rotation of the traction sheave 2 according to the electric signal fed back by the current monitoring module 405 so as to correspondingly obtain the running distance and/or the running speed and/or the up-down and stopping positions of the car 7, wherein the running speed comprises the running acceleration aAddingRunning deceleration aReducingAnd a running uniform velocity V1.
The system is provided with the permanent magnet group or the conductive coil 404 on the traction sheave 2, when the traction sheave 2 rotates, the conductive coil 404 cuts the magnetic induction line 403 to generate a corresponding electric signal, the elevator control module analyzes and processes the electric signal to effectively monitor the running data such as the running distance, the running speed and the like of the lift car 7, and the system can monitor whether the elevator runs normally, stops floors and other related information by comparing with a parameter model; the current-sensing elevator operation data acquisition system has the advantages that the acquisition mode of the operation data is irrelevant to the communication protocol of the elevator, so that the acquisition of the elevator operation data is convenient and rapid, more accurate and reliable, special technical limit is not required to be overcome, the current-sensing elevator operation data acquisition system has the characteristics of low installation/manufacturing cost, reliable performance and the like, and the current-sensing elevator operation data acquisition system is applicable to different elevators and has strong universality; in addition, the running data of the elevator is connected with an external upper computer through a network communication module, so that a user can monitor the running state of the elevator in real time, and the use safety of the elevator is effectively ensured.
Further, when the permanent magnet group is disposed on the traction sheave 2, the permanent magnet group includes a first permanent magnet 401 and a second permanent magnet 402 corresponding to each other, the first permanent magnet 401 and the second permanent magnet 402 are respectively disposed on the traction sheave 2, and an S pole on the first permanent magnet 401 and an N pole on the second permanent magnet 402 correspond to each other, so that the magnetic induction line 403 is generated between the first permanent magnet 401 and the second permanent magnet 402; the conductive coil 404 is disposed between the first permanent magnet 401 and the second permanent magnet 402; the two permanent magnets rotate along with the rotation of the traction sheave 2 respectively, that is, the first permanent magnet 401 and the second permanent magnet 402 do circular motion along the same circular track b respectively; the direction of the current generated on the conductive coil 404 when the traction sheave 2 rotates forwards is different from the direction of the current generated on the conductive coil 404 when the traction sheave 2 rotates backwards (namely, the positive and negative electrodes are changed), and the elevator control module can judge that the traction sheave rotates forwards or backwards according to the direction of the current, so that the ascending or descending of the car 7 is effectively judged.
Furthermore, a time recording module for recording the rolling time of the traction sheave 2 is arranged on the elevator control module, and the running acceleration a of the elevator car 7 can be calculated by recording the corresponding rolling time of the traction sheave 2 through the time recording moduleAddingRunning deceleration aReducingThe running uniform speed V1, the running distance S and the like, and the time recording module can also count the time data of the working time, the running time, the stopping time and the like of the car 7.
Furthermore, the system is also used for a power storage module for storing electric energy generated by cutting the magnetic induction wire 403 by the conductive coil 404, and the power storage module is electrically connected with the elevator control module to supply power to the elevator control module; the electrical energy generated by cutting the magnetic induction wire 403 can be used for assisting in collecting elevator operation data and can also be stored for use by internal low-power electrical components.
Furthermore, the elevator control module comprises a central main control module for analyzing and processing the electric signals, a storage for storing related data and a network communication module for realizing data transmission; the current monitoring module 405 is connected with the central main control module, and the current monitoring module 405 sends the acquired electric signals to the central main control module, and the electric signals are analyzed and processed by the central main control module and converted into corresponding elevator operation data; the central main control module is respectively connected with the network communication module and the storage; and the central main control module performs data transmission with an external upper computer through the network communication module.
Furthermore, the central main control module is a programmable logic controller; the storage is at least used for storing basic parameters of the elevator and elevator operation data; the external upper computer comprises a building control center and a remote monitoring center.
The current induction elevator operation data acquisition method comprises the following steps:
the method comprises the steps that firstly, basic information of an elevator is recorded in a cloud background, and a speed measuring sensor is used for detecting data of a car 7 in a normal running state; the elevator information comprises the elevator model, the elevator age, the using occasion, the bar code of the electric induction module 4, the bar code of the speed measuring sensor and the like, the speed measuring sensor related to the embodiment is an existing device, and can be a laser speed measuring sensor, a gyroscope, an acceleration sensor and the like, and the speed measuring sensor is in communication connection with the Internet of things;
secondly, enabling the lift car 7 to respectively execute an ascending task and a descending task under the no-load state and the full-load state; the elevator control module calculates and records the running uniform speed V1 and the running acceleration a of the car under the state of no load and full load through a speed measuring sensorAddingRunning deceleration aReducingAnd a running distance S; in combination with the current monitoring module 405 acquiring electric signals generated by the conductive coil 404 cutting the magnetic induction wire 403 in the no-load and full-load states and time information recorded by the time recording module, the cloud background automatically establishes a parameter model for displaying the relation between the electric signals and normal operation data of the car 7; specifically, during the operation of the car 7, the current monitoring module 405 collects electrical signals generated when the conductive coil 404 cuts the magnetic induction wire 403 under different operation states (including a constant speed state, an acceleration state, a deceleration state, and the like), and monitors the operation speeds of the car 7 corresponding to the different operation states through the speed measurement sensor (see fig. 6);
and thirdly, when the elevator is used daily, the application of a speed measurement sensor is cancelled, an electric signal generated by cutting the magnetic induction wire 403 by the conductive coil 404 in an actual state is collected by the current monitoring module 405, and the cloud background can directly obtain each actual operation data of the car 7 according to the relation between the electric signal in the parameter model and the operation data of the car 7.
The method comprises the steps that normal current, normal voltage and normal speed at different time points are detected through a current monitoring module 405 and a speed measuring sensor respectively in the normal running state of the elevator, a corresponding parameter model is established at a cloud background, and parameter values corresponding to running data of the elevator in the normal running state are obtained by an elevator control module according to the parameter model and serve as comparison standards; in daily use, respectively detecting real-time current, real-time voltage and real-time speed at different time points, establishing corresponding parameter models, and obtaining parameter values corresponding to each operation data of the elevator in a real-time operation state by an elevator control module according to the parameter models; the cloud background can monitor whether the elevator normally runs or not by comparing each real-time parameter value with a normal parameter value so as to take corresponding maintenance measures in time.
The parametric model is as follows:
acquisition of running uniform velocity V1: when the electric signal is constant, the elevator control module judges that the elevator car 7 is in a constant speed state, and the speed detected by the speed measuring sensor in the state is taken as the running average speed V1; it should be noted that, when the electric signal is constant, the electric signal (current value and voltage value) is allowed to fluctuate within a certain range, as long as the fluctuation range does not exceed the extreme value; in order to improve the accuracy of collecting the running uniform speed V1, the electric signal and the real-time speed are collected at a plurality of time points (the constant speed state of the embodiment is at the same time interval t)Uniform mixingCollected) and then averaged to obtain constant values of the electrical signal, including constant value of current I, and constant value of uniform velocity V1Constant temperatureAnd constant value of voltage UConstant temperatureTaking the above parametric model as an example: constant value of current IConstant temperature=（210+218+228+…）/nUniform mixing、UConstant temperature=（2.9+3.0+3.05+…）/nUniformly mixing,Constant value of uniform velocity V1Constant temperature=（1.8+1.9+1.92+…）/nUniform mixing，nUniform mixingThe number of the numerical values collected in the uniform speed state.
Running acceleration aAddingThe collection: when the electric signal rises, the elevator control module judges that the elevator car 7 is in an acceleration state, and obtains the running acceleration a of the elevator car 7 through an acceleration formulaAddingI.e. aAdding=（VtAdding-VoAdding）/tAddingWherein Vt isAddingTo accelerate the final speed, VoAddingTo accelerate the initial velocity, tAddingIs the acceleration time; in order to increase the acquisition running acceleration aAddingBy acquiring electrical signals and real-time speed at multiple time points (acceleration state of the present embodiment at equal time intervals t)AddingCollected) and then averaged to obtain the running acceleration aAddingTaking the above parametric model as an example: acceleration a at a first point in timePlus 1=（VtAdding-VoAdding）/tAdding=（1.0-02）/tAdding=0.8/tAddingAcceleration a at a second time pointPlus 2=（VtAdding-VoAdding）/tAdding=（1.75-1.0）/tAdding=0.75/tAddingN thAddingAcceleration a at a time pointPlus n plus=（VtAdding-VoAdding）/tAddingTaking the mean value, running acceleration aAdding=（aPlus 1+ aPlus 2+…+ aPlus n plus）/nAddingRunning acceleration aAddingPositive values.
Running deceleration aReducingThe collection: when the electric signal is decreased, the elevator control module judges that the elevator car 7 is in a deceleration state, and obtains the running deceleration a of the elevator car 7 through an acceleration formulaReducingI.e. aReducing=（VtReducing-VoReducing）/tReducingWherein Vt isReducingTo slow down the final speed, VoReducingFor decelerating initial speed, tReducingIs the deceleration time; in order to increase the deceleration a of the collection operationAddingBy acquiring the electrical signal and the real-time speed at a plurality of time points (the deceleration state of the present embodiment is at the same time interval t)ReducingCollected) and then averaged to obtain the operating deceleration aReducingTaking the above parametric model as an example: deceleration a at a first point in timeMinus 1=（VtReducing-VoReducing）/tReducing=（1.0-1.8）/tReducing=-0.8/tReducingDeceleration a at a second timeMinus 2=（VtReducing-VoReducing）/tReducing=（0.1-1.0）/tReducing=-0.9/tReducingN thReducingDeceleration a at a timeReducingnReducing=（VtReducing-VoReducing）/tReducingAverage, running deceleration aReducing=（aMinus 1+ aMinus 2+…+ aReducingnReducing）/nReducingRunning deceleration aReducingIs negative.
Collecting the running distance S: according to the running uniform speed V1 and the running acceleration aAddingRunning deceleration aReducingAnd the running time T of the car 7, and the running distance S of the car 7 is obtained through a displacement formula;
normally, the car 7 needs to be accelerated, decelerated and uniform throughout the whole running process, so that the car is driven to run at a constant speed
Operating time T =ΔTAdding+△TUniform mixing+△TReducingWherein, Δ TAddingTime required for acceleration, DeltaTUniform mixingTime of constant speed operation, delta TReducingThe time required for deceleration, each time can be monitored by the time recording module,
travel distance S =ΔsAdding+△SUniform mixing+△SReducingWherein Δ SAddingThe distance required for acceleration, the distance that the delta S is uniformly moved at a constant speed, the distance that the delta S is reduced to the distance required for deceleration,
△Sadding=VoAdding·△TAdding+aAdding·△TAdding 2V 2, the car 7 generally starts to run from a stop state, so Vo hereAddingTypically 0, i.e. Δ SAdding= aAdding·△TAdding 2/2
△SUniform mixing= V1·△TUniform mixing，
△SReducing=VoReducing·△TReducing+aReducing·△T Reducing 22, the car 7 generally starts to decelerate from a constant speed state, so VoReducingGenerally equal to V1, i.e. Δ SReducing=V1·△TReducing+aReducing·△TReducing 2/2；
In a special case, since the car 7 needs to be decelerated without being accelerated to the traveling uniform velocity V1, the car 7 is not accelerated yet
Operating time T =ΔTAdding’+△TReducing', wherein Δ TAdding' actual running time of acceleration section,. DELTA.TReducing' is the actual running time of the deceleration section,
travel distance S =ΔsAdding’+△SReducing', wherein Δ SAdding' actual distance of travel, DeltaS, for acceleration sectionReducing' is the actual travel distance of the deceleration section,
△Sadding’=VoAdding·△TAdding’+aAdding·△TAdding’2V 2, the car 7 generally starts to run from a stop state, so Vo hereAddingTypically 0, i.e. Δ SAdding’= aAdding·△TAdding’2/2
△SReducing’ =VoReducing·△TReducing’+aReducing·△TReducing’22, the car 7 generally starts decelerating from the final speed of the acceleration section, so VoReducing=VoAddingI.e. VoReducing=VoAdding+ aAdding·△TAdding’。
Determining ascending and descending, wherein when the car 7 ascends, the current monitoring module 405 monitors the direction of the current in the electric signal and determines that the current flows in the forward direction at the moment, and when the car 7 descends, the current monitoring module 405 monitors the direction of the current in the electric signal and determines that the current flows in the reverse direction at the moment; the elevator control module judges whether the car 7 moves upwards or downwards according to the direction of the current in the electric signal.
Determining the position of the car 7, and obtaining the floor where the car 7 is located by an elevator control module according to the running distance S of the car 7 and the height of each floor;
ascending: the lift car 7 ascends from the nth floor, and the height h of the upper floor is subtracted from the floor by the running distance S (the height of the (n + 1) th floor is hn+1The height of the n +2 th floor is h n+2…, according to the design of different buildings, the heights h of all floors can be equal or unequal), until the residual value is zero (allowed error, namely close to zero) or less than the height h of a single floor, and the floor corresponding to the finally reduced height h of the floor is the final stop floor/position of the car 7; when the residual value is zero (error is allowed, namely, the residual value is close to zero), the system judges that the car 7 stops at the appointed position of the corresponding floor; when the residual value is less than h, the system judges that the car 7 stops at the abnormal position of the corresponding floor, and at the moment, the system further confirms whether the abnormal position of the car 7 can execute door opening action;
descending: the cage 7 descends from the nth floor and the height h of the next floor is subtracted from the floor by the running distance S (the height of the (n-1) th floor is hn-1The height of the nth-2 floor is h n-2…, according to the design of different buildings, the heights h of all floors can be equal or unequal), until the residual value is zero (allowed error, namely close to zero) or less than the height h of a single floor, and the floor corresponding to the finally reduced height h of the floor is the final stop floor/position of the car 7; when the residual value is zero (error is allowed, namely, the residual value is close to zero), the system judges that the car 7 stops at the specified position of the corresponding floor, when the residual value is smaller than h, the system judges that the car 7 stops at the abnormal position of the corresponding floor, and at the moment, the system further confirms whether the door opening action can be executed at the abnormal position where the car 7 is positioned.
The foregoing is a preferred embodiment of the present invention, and the basic principles, principal features and advantages of the invention are shown and described. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and the invention is intended to be protected by the following claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A current-sensing elevator operation data acquisition system comprises a traction machine (1) and a traction sheave (2), wherein the output end of the traction machine (1) is in transmission connection with the traction sheave (2) to drive the traction sheave to rotate; the method is characterized in that: the elevator control system also comprises an electric induction module (4) used for generating electric signals and an elevator control module used for analyzing and processing the electric signals; the electric induction module (4) comprises a permanent magnet group used for generating magnetic induction lines (403), a conductive coil (404) used for cutting the magnetic induction lines (403) to generate electric signals, and a current monitoring module (405) used for collecting the electric signals, wherein the conductive coil (404) is electrically connected with the current monitoring module (405); the permanent magnet set or the conductive coil (404) is arranged on the traction sheave (2) and rotates along with the rotation of the traction sheave (2), so that the conductive coil (404) cuts the magnetic induction lines (403) to generate corresponding electric signals; the elevator control module is electrically connected with the current monitoring module (405) and the cloud background in communication connection, and the elevator control module calculates the rolling travel and/or the rolling speed and/or the forward and reverse rotation of the traction sheave (2) according to an electric signal fed back by the current monitoring module (405), so that the running distance and/or the running speed and/or the up and down movement and/or the stopping position of the car (7) are obtained correspondingly.
2. The current-sensing elevator operation data acquisition system of claim 1, wherein: when the permanent magnet group is arranged on the traction sheave (2), the permanent magnet group comprises a first permanent magnet (401) and a second permanent magnet (402) which correspond to each other, the first permanent magnet (401) and the second permanent magnet (402) are respectively arranged on the traction sheave (2), a magnetic induction line (403) is generated between the first permanent magnet (401) and the second permanent magnet (402), and a conductive coil (404) is arranged between the first permanent magnet (401) and the second permanent magnet (402); the two permanent magnets respectively do circular motion along with the rotation of the traction sheave (2).
3. The current-sensing elevator operation data acquisition system of claim 1, wherein: the elevator control module is provided with a time recording module for recording the rolling time of the traction sheave (2).
4. The current-sensing elevator operation data acquisition system of claim 1, wherein: the elevator control system further comprises a power storage module used for storing electric energy generated by cutting the magnetic induction wire (403) by the conductive coil (404), and the power storage module is electrically connected with the elevator control module to supply power to the elevator control module.
5. The current-sensing elevator operation data acquisition system of claim 1, wherein: the elevator control module comprises a central main control module for analyzing and processing the electric signals, a memory for storing related data and a network communication module for realizing data transmission; the current monitoring module (405) is connected with the central main control module, the current monitoring module (405) sends the acquired electric signals to the central main control module, and the electric signals are analyzed and processed by the central main control module and converted into corresponding elevator operation data; the central main control module is respectively connected with the network communication module and the storage; and the central main control module is in data transmission with an external upper computer through the network communication module.
6. The current-sensing elevator operation data acquisition system of claim 5, wherein: the central main control module is a programmable logic controller; the memory is at least used for storing basic parameters of the elevator and elevator operation data; the external upper computer comprises a building control center and a remote monitoring center.
7. A current induction elevator operation data acquisition system acquisition method is characterized in that:
the method comprises the steps that firstly, basic information of an elevator is recorded in a cloud background, and a speed measuring sensor is used for detecting data of a car (7) in a normal running state;
secondly, enabling the lift car (7) to respectively execute an ascending task and a descending task under the no-load state and the full-load state; the elevator control module records the empty load and full load states of the lift car through the calculation of the speed measuring sensorRunning uniform velocity V1, running acceleration aAddingRunning deceleration aReducingAnd a running distance S; collecting electric signals and related time information generated by cutting the magnetic induction lines (403) by the conductive coils (404) under the no-load and full-load states by combining the current monitoring module (405), and automatically establishing a parameter model for displaying the relation between the electric signals and normal operation data of the lift car (7) by the cloud background;
and thirdly, when the elevator is used daily, the application of a speed measurement sensor is cancelled, an electric signal generated when the magnetic induction line (403) is cut by the conductive coil (404) in an actual state is collected through the current monitoring module (405), and the cloud background can directly obtain each actual operation data of the car (7) according to the relation between the electric signal in the parameter model and the operation data of the car (7).
8. The current-sensing elevator operation data acquisition system acquisition method according to claim 7, wherein:
acquisition of running uniform velocity V1: when the electric signal is constant, the elevator control module judges that the elevator car (7) is in a constant speed state, and the speed detected by the speed measuring sensor in the state is taken as the running average speed V1;
running acceleration aAddingThe collection: when the electric signal rises, the elevator control module judges that the elevator car (7) is in an acceleration state, and obtains the running acceleration a of the elevator car (7) through an acceleration formulaAdding；
Running deceleration aReducingThe collection: when the electric signal is decreased, the elevator control module judges that the elevator car (7) is in a deceleration state, and obtains the running deceleration a of the elevator car (7) through an acceleration formulaReducing；
Collecting the running distance S: according to the running uniform speed V1 and the running acceleration aAddingRunning deceleration aReducingAnd the running time T of the car (7), and then the running distance S of the car (7) is obtained through a displacement formula.
9. The current-sensing elevator operation data acquisition system acquisition method according to claim 7, wherein: determining ascending and descending, wherein when the car (7) ascends, the current monitoring module (405) monitors the direction of current in the electric signal and determines that the current flows in the forward direction at the moment, and when the car (7) descends, the current monitoring module (405) monitors the direction of the current in the electric signal and determines that the current flows in the reverse direction at the moment; in the daily operation of the car (7), the elevator control module judges whether the car (7) moves upwards or downwards according to the direction of current in the electric signal.
10. The current-sensing elevator operation data acquisition system acquisition method according to claim 7, wherein: and the position of the car (7) is determined, and the elevator control module obtains the floor where the car (7) is located according to the running distance S of the car (7) and the height h of each floor.
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