WO2020079842A1 - エレベーターのブレーキ装置異常診断システム - Google Patents
エレベーターのブレーキ装置異常診断システム Download PDFInfo
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- WO2020079842A1 WO2020079842A1 PCT/JP2018/039069 JP2018039069W WO2020079842A1 WO 2020079842 A1 WO2020079842 A1 WO 2020079842A1 JP 2018039069 W JP2018039069 W JP 2018039069W WO 2020079842 A1 WO2020079842 A1 WO 2020079842A1
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- data
- brake device
- abnormality
- determination
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0025—Devices monitoring the operating condition of the elevator system for maintenance or repair
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B3/00—Applications of devices for indicating or signalling operating conditions of elevators
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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
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N20/00—Machine learning
Definitions
- the present invention relates to an elevator brake device abnormality diagnosis system.
- Patent Document 1 describes an example of an elevator brake device abnormality diagnosis system.
- the brake device abnormality diagnosis system measures the stroke of the brake device plunger with a laser displacement meter.
- the brake device abnormality diagnosis system diagnoses the brake device as abnormal when the measured stroke reaches a threshold value.
- the brake device abnormality diagnosis system of Patent Document 1 determines the abnormality of the brake device based on a predetermined threshold value for the stroke of the plunger. Therefore, the brake device abnormality diagnosis system cannot diagnose the abnormality of the brake device when the threshold value for determining the abnormality is unknown.
- An object of the present invention is to provide an abnormality diagnosis system capable of diagnosing an abnormality of a brake device based on data whose threshold for diagnosing abnormality is unknown.
- the brake system abnormality diagnosis system for an elevator when the brake system for braking the elevator car operates, an observation unit that acquires operation data about the operation of the brake system, and an operation data acquired by the observation unit.
- a conversion unit that converts the status data corresponding to the failure phenomenon of the braking device, a data acquisition unit that acquires the determination data for determining an abnormality of the braking device, and a diagnostic model for the braking device abnormality using the status data and the determination data.
- the brake system abnormality diagnosis system for an elevator when the brake system for braking the elevator car operates, an observation unit that acquires operation data about the operation of the brake system, and an operation data acquired by the observation unit.
- a conversion unit that converts state data corresponding to a failure phenomenon of the braking device, a learning unit that uses the state data to learn a diagnostic model for an abnormality of the braking device by an unsupervised learning method, and an observation unit after learning by the learning unit.
- a determination unit that determines an abnormality of the brake device based on a diagnostic model from the state data obtained by converting the operation data acquired by the conversion unit.
- the brake device abnormality diagnosis system includes an observation unit, a conversion unit, a learning unit, and a determination unit.
- the observation unit acquires operation data about the operation of the brake device when the brake device that brakes the elevator car operates.
- the conversion unit converts the operation data acquired by the observation unit into state data corresponding to the failure phenomenon of the brake device.
- the learning unit uses the state data to learn the diagnostic model of the abnormality of the brake device by the method of learning with a teacher or learning without a teacher.
- the determination unit determines the abnormality of the brake device based on the diagnostic model from the state data obtained by converting the operation data acquired by the observation unit after the learning by the learning unit by the conversion unit. Thereby, the abnormality of the brake device can be diagnosed based on the data whose threshold for diagnosing the abnormality is unknown.
- FIG. 3 is a diagram showing an example of abnormality diagnosis by the brake device abnormality diagnosis system according to the first embodiment.
- 3 is a flowchart showing an example of the operation of the brake device abnormality diagnosis system according to the first embodiment.
- 3 is a flowchart showing an example of the operation of the brake device abnormality diagnosis system according to the first embodiment.
- FIG. 3 is a diagram showing an example of abnormality diagnosis by the brake device abnormality diagnosis system according to the first embodiment. It is a figure which shows the hardware constitutions of the principal part of the brake device abnormality diagnostic system which concerns on Embodiment 1.
- FIG. 1 is a configuration diagram of a brake device abnormality diagnosis system 1 according to the first embodiment.
- the brake system abnormality diagnosis system 1 is applied to the elevator 2.
- the elevator 2 is installed in the building 3.
- the building 3 has a plurality of floors.
- the hoistway 4 penetrates each floor of the building 3.
- the hall 5 is provided on each floor of the building 3.
- the hall 5 on each floor faces the hoistway 4.
- each of the plurality of hall doors 6 is provided in the hall 5 on each floor.
- the elevator 2 includes a hoisting machine 7, a main rope 8, a counterweight 9, a car 10, a brake device 11, a control panel 12, and a monitoring device 13.
- the hoisting machine 7 is provided, for example, above the hoistway 4.
- the hoisting machine 7 includes a motor and a sheave.
- the motor of the hoisting machine 7 is a device that rotates the sheave.
- the main rope 8 is wound around the sheave of the hoisting machine 7 so that it can move following the rotation of the sheave of the hoisting machine 7.
- One end of the main rope 8 is provided on the car 10.
- the other end of the main rope 8 is provided on the balance weight 9.
- the counterweight 9 is provided so that it can follow the movement of the main rope 8 and run vertically inside the hoistway 4.
- the car 10 is provided so as to be able to travel vertically inside the hoistway 4 following the movement of the main rope 8.
- the car 10 includes a car door 14.
- the car door 14 is a device that opens and closes when the car 10 is stopped at any of the floors of the building 3.
- the car door 14 is a device that opens and closes the hall door 6 in conjunction with each other.
- the brake device 11 is a device that brakes the car 10 when the car 10 is stopped.
- the brake device 11 includes a brake drum 15, a brake shoe 16, a coil 17, a plunger 18, a spring 19, and a brake control device 20.
- the brake drum 15 is provided on the output shaft of the motor of the hoisting machine 7 so as to rotate in synchronization with the motor of the hoisting machine 7.
- the brake shoe 16 faces the outer surface of the brake drum 15.
- the brake shoe 16 is a device that brakes the car 10 by braking the rotation of the brake drum 15 with a frictional force.
- the spring 19 is a device that presses the brake shoe 16 against the brake drum 15 by elastic force.
- the coil 17 is a device that generates a magnetic field when energized.
- the plunger 18 is a device that displaces the brake shoe 16 away from the brake drum 15 while resisting the elastic force of the spring 19 by the magnetic field generated by the coil 17.
- the brake control device 20 is a device that controls the operation of the brake device 11.
- the operation of the braking device 11 includes suction and release.
- the brake control device 20 is equipped with an element that outputs a suction command and a release command.
- the suction command is output when the brake device 11 brakes the car 10.
- the release command is output when the braking device 11 brakes the car 10.
- the brake device 11 may include a brake arm that transmits the elastic force of the spring 19 to the brake shoe 16.
- the control panel 12 is provided, for example, above the hoistway 4.
- the control panel 12 is a device that controls the operation of the elevator 2.
- the operation of the elevator 2 includes traveling of the car 10, for example.
- the control panel 12 is connected to the hoisting machine 7 and the brake device 11 so as to control the operation of the elevator 2.
- the monitoring device 13 is provided in the building 3, for example.
- the monitoring device 13 is a device that monitors the operation of the elevator 2.
- the monitoring device 13 is connected to the control panel 12 so that data about the operation of the elevator 2 can be communicated.
- the elevator 2 is provided with an operation measuring device and an environment measuring device which are not shown.
- the motion measurement device is a device that acquires motion measurement data when the brake device 11 operates.
- the motion measurement data is multi-component data that represents information about the motion of the brake device 11.
- a part or all of the motion measuring device is provided in, for example, the brake device 11, the hoisting machine 7, or the car 10.
- the motion measuring device includes, for example, a sensor and a switch.
- the motion measuring device includes, for example, an ammeter, a brake switch, and an encoder.
- the ammeter is provided, for example, in the wiring that supplies power to the coil 17.
- the ammeter is a sensor that measures the current passed through the coil 17.
- the brake switch is provided in the brake device 11.
- the brake switch is a switch that detects the operating state of the brake device 11.
- the operating state of the brake device 11 includes a braking state and a releasing state.
- the brake switch includes a mechanism that detects an operating state of the brake device 11 by detecting a mechanical displacement of a part of the brake device 11, for example.
- the encoder is provided on the motor of the hoist 7.
- the encoder is a sensor that outputs the rotation angle of the motor of the hoisting machine 7 with a pulse signal.
- Information on each component of the operation measurement data is output to the control panel 12.
- information on each component of the operation measurement data is output to the control panel 12 through the brake control device 20.
- the control panel 12 stores the operation measurement data together with the signal data and the calculation data so as to be output as operation data.
- the signal data is multi-component data that represents the presence or absence of the input or output of the control signal.
- the control signals are, for example, a brake voltage command, a suction command, a release command, a brake voltage command, and a brake contact signal.
- the variables of the control software may include information of calculated data.
- the calculated data is multi-component data calculated based on motion measurement data, signal data, and the like.
- the environmental measurement device is a device that acquires environmental measurement data.
- the environment measurement data is multi-component data that represents information about the operating environment of the brake device 11.
- a part or all of the environment measuring device is provided in, for example, the brake device 11, the hoisting machine 7, or the car 10.
- the environment measuring device is provided in the hoistway 4, for example.
- the plurality of environment measuring devices include, for example, a scale and a thermometer.
- the scale is installed in the basket 10.
- the scale is a sensor that measures the weight of a user who is in the car 10.
- the thermometer is provided in the hoistway 4.
- the thermometer is, for example, a sensor that measures the air temperature.
- the thermometer may be provided in the brake device 11. At this time, the thermometer is, for example, a sensor that measures the temperature of the brake device 11.
- Information on each component of environmental measurement data is output to the control panel 12.
- information on each component of the environmental measurement data is output to the control panel 12 through the brake control device 20.
- the control panel 12 stores the environmental measurement data so that it can be output.
- the information center 21 is provided outside the building 3, for example.
- the information center 21 is a base for collecting information on the elevator 2 and other elevators.
- the brake device abnormality diagnosis system 1 is a system for diagnosing an abnormality of the brake device 11.
- the braking device abnormality diagnosis system 1 may have a function of predicting the deterioration time of the braking device 11.
- the brake device abnormality diagnosis system 1 includes a data server 22, a maintenance support device 23, and a display device 24.
- the data server 22 is provided in the information center 21, for example.
- the data server 22 is connected to the monitoring device 13 so that information such as the operation of the elevator 2 can be communicated.
- the data server 22 includes an observation data storage unit 25, an attribute data storage unit 26, and an abnormal data storage unit 27.
- the observation data storage unit 25 is a unit that stores an observation database.
- the observation database includes a plurality of observation data.
- the observation data includes operation data and environmental measurement data.
- the attribute data storage unit 26 is a unit that stores an attribute database.
- the attribute database includes a plurality of attribute data.
- the attribute data includes data based on elevator attributes.
- the attribute data also includes data based on the attributes of the braking device.
- the attribute data includes, for example, information such as a brake device model, a car device weight, an elevator type, and an elevator installation area.
- the type of elevator includes information such as whether or not the elevator is an observation elevator.
- the type of elevator is related to the environment of the hoistway, for example.
- the type of elevator is related to the type of elevator, for example.
- the area where the elevator is installed is related to the environment of the hoistway through, for example, the climate.
- the area where the elevator is installed is related to the environment of the hoistway through, for example, the concentration of salt or sulfur in the air.
- the abnormal data storage unit 27 is a unit that stores an abnormal history database.
- the abnormality history database includes a plurality of determination data regarding the elevator 2 and other elevators.
- the determination data is data for determining an abnormality of the brake device 11.
- the determination data includes, for example, the presence / absence of abnormality, the type of abnormality, and the degree of abnormality.
- the determination data is, for example, data associated with one motion data.
- the maintenance support device 23 is provided in the information center 21, for example.
- the maintenance support device 23 includes an observation unit 28, a data acquisition unit 29, a classification unit 30, a conversion unit 31, a learning unit 32, a determination unit 33, a generation unit 34, a prediction unit 35, and a storage unit 36. And a notification unit 37.
- the observation unit 28 is a unit that acquires operation data when the brake device 11 operates.
- the observation unit 28 is connected to the monitoring device 13 so as to acquire observation data including operation data.
- the data acquisition unit 29 is a part that generates a training data set.
- the training data set includes multiple sets of environmental data, motion data, and decision data.
- the environmental data includes environmental measurement data and attribute data.
- the data acquisition unit 29 is connected to the observation data storage unit 25 so as to acquire the observation data.
- the data acquisition unit 29 is connected to the attribute data storage unit 26 so as to acquire the attribute data.
- the data acquisition unit 29 is connected to the abnormal data storage unit 27 so as to acquire the determination data.
- the classification unit 30 is a part that classifies the operation data based on the environmental data.
- the classification unit 30 is connected to the observation unit 28 so as to be able to acquire motion data.
- the classification unit 30 is connected to the observation unit 28 and the attribute data storage unit 26 so that the environmental measurement data and the attribute data can be acquired as the environmental data.
- the classification unit 30 is connected to the data acquisition unit 29 so that the training data set can be acquired.
- the conversion unit 31 is a unit that converts operation data into state data and index data.
- State data is multi-component data.
- Each component of the state data corresponds to each failure phenomenon of the brake device 11.
- Each failure phenomenon of the brake device 11 may be, for example, fixed contact of a relay switch, deterioration of the spring 19, displacement of the brake shoe 16, deterioration of braking ability of the brake device 11, and abnormality of an electronic circuit of the brake control device 20. including.
- the index data is data representing deterioration of the brake device 11.
- the index data is, for example, time series data representing a deterioration index value for each preset time unit.
- the deterioration index value is a value that is an index representing deterioration of the brake device 11.
- the deterioration index value may be a multi-component value.
- the deterioration of the brake device 11 is, for example, wear of the brake shoe 16.
- the deterioration of the brake device 11 reduces the braking ability of the brake device 11, for example.
- the decrease in the braking ability of the brake device 11 causes a slip in the brake device 11, for example.
- the time unit of the time series data is, for example, one day.
- the conversion unit 31 is connected to the classification unit 30 so as to obtain the motion data classified based on the environmental data.
- the learning unit 32 is a unit that learns an abnormality diagnosis model of the brake device 11 using the state data.
- the learning method by the learning unit 32 is a machine learning method.
- the learning unit 32 is connected to the conversion unit 31 so as to acquire the state data.
- the learning by the learning unit 32 is performed by, for example, an operation of starting learning by an operator of the information center 21.
- the determination unit 33 uses the state data obtained by converting the operation data acquired by the observation unit 28 after the learning by the learning unit 32 by the conversion unit 31 based on the diagnostic model learned by the learning unit 32 to determine whether the brake device 11 is abnormal. Is a part for determining.
- the determination unit 33 is connected to the conversion unit 31 so that the state data can be acquired.
- the determination unit 33 is connected to the learning unit 32 so that the diagnostic model can be acquired.
- the determination by the determination unit 33 is performed, for example, each time the state data is acquired while the determination unit 33 is activated.
- the determination unit 33 is activated by, for example, an activation operation by an operator of the information center 21.
- the determination unit 33 is connected to the monitoring device 13 so that the determination result can be output.
- the generation unit 34 is a unit that generates a deterioration model that represents changes in deterioration represented by the index data over time.
- the deterioration model is a model that predicts future changes in the deterioration index value.
- the deterioration model includes a trend component, a periodic component, and a short-term fluctuation component.
- the trend component is a component that represents a long-term tendency of monotonous increase or decrease.
- the periodic component is a component that represents a tendency of periodic change.
- the short-term fluctuation component is a component that represents a short-term fluctuation.
- the generation unit 34 is connected to the conversion unit 31 so as to acquire the index data.
- the prediction unit 35 is a unit that predicts the deterioration time of the brake device 11 based on the deterioration model generated by the generation unit 34.
- the deterioration time of the brake device 11 is a time when the deterioration index value reaches a preset threshold value.
- the prediction unit 35 is connected to the generation unit 34 so that the deterioration model can be read.
- the storage unit 36 is a unit that stores determination result data.
- the determination result data is data representing the result of the determination made by the determination unit 33.
- the storage unit 36 is connected to the determination unit 33 so that the determination result data can be acquired.
- the storage unit 36 is a unit that stores prediction result data.
- the prediction result data is data representing the result of the prediction by the prediction unit 35.
- the storage unit 36 is connected to the prediction unit 35 so that the prediction result data can be acquired.
- the notification unit 37 is a part that notifies the determination result of the abnormality of the brake device 11 by the determination unit 33.
- the notification unit 37 is connected to the determination unit 33 so that the determination result data can be acquired.
- the notification unit 37 is a unit that notifies the prediction result of the deterioration time of the brake device 11 by the prediction unit 35.
- the notification unit 37 is connected to the prediction unit 35 so that the prediction result data can be acquired.
- the notification unit 37 generates notification data from the determination result data or the prediction result data.
- the notification data is data representing the content to be notified.
- the display device 24 is a device that displays the content represented by the acquired data.
- the display device 24 is, for example, a display.
- the display device 24 is provided in the information center 21, for example.
- the display device 24 is connected to the notification unit 37 so that the notification data can be acquired.
- FIG. 2 is a diagram showing an example of abnormality diagnosis by the brake device abnormality diagnosis system according to the first embodiment.
- Graph A shows an example of data included in the operation data.
- the horizontal axis of the graph A represents time.
- the vertical axis of the graph A represents the signal value measured by the motion measuring device.
- each curve represents data acquired by one operation of the braking device 11.
- Operation data is acquired as follows, for example.
- the control panel 12 outputs a signal for operating the brake device 11 to the brake control device 20 when the car 10 is stopped.
- the brake control device 20 operates the brake device 11 according to the control signal input from the control panel 12.
- the motion measuring device acquires motion measurement data.
- the motion measurement device outputs motion measurement data to the brake control device 20 or the control panel 12.
- the environment measuring device acquires environment measurement data.
- the environment measurement device outputs environment measurement data to the brake control device 20 or the control panel 12.
- the brake control device 20 outputs the input motion measurement data and environment measurement data to the control panel 12.
- the control panel 12 calculates the calculated data based on the operation measurement data and the signal data.
- the calculated data includes, for example, data on the position of the car 10 calculated from the count of the pulse signal of the encoder.
- the calculated data includes, for example, data of a time difference between the output of the brake suction command signal and the detection of the actual operation of the brake device 11 by the brake switch.
- the calculated data includes, for example, data on the time during which the braking device 11 continues the braking operation.
- the calculated data includes, for example, data on the frequency of operation of the brake device 11.
- the control panel 12 outputs the operation measurement data, the signal data, and the calculated data as operation data to the observation unit 28 through the monitoring device 13.
- the control panel 12 outputs the environmental measurement data to the observation unit 28 through the monitoring device 13.
- the observation unit 28 acquires operation data and environmental measurement data from the control panel 12 through the monitoring device 13.
- the observation unit 28 outputs the operation data and the environmental measurement data to the observation data storage unit 25 as observation data.
- the observation unit 28 outputs the operation data and the environmental measurement data to the classification unit 30.
- the observation data storage unit 25 stores the acquired observation data in the observation database.
- the observation data includes, for example, flag data, numerical data, and waveform data.
- the component of the operation data is, for example, flag data, numerical data or waveform data.
- the flag data includes, for example, information such as whether or not the switch has operated, whether or not the sensor has operated, and the presence or absence of a control signal.
- the flag data is represented by a true / false value, an integer value or a character string.
- Numeral data includes information such as the value of physical quantity measured by the sensor.
- Numerical data includes, for example, the current supplied to the coil 17, the duration of braking by the brake device 11, the position of the car 10, the air temperature, the temperature of the brake device 11, the frequency of operation of the brake device 11, the air temperature, and the car 10. Including the weight of passengers on board. Numerical data is represented by an integer value or a real value.
- Waveform data includes, for example, information such as a temporal change in the physical quantity measured by the sensor.
- the waveform data includes, for example, a pattern change of the current supplied to the coil 17, a temporal change of the position of the car 10, and a temporal change of the brake temperature.
- the waveform data is represented by a list including a plurality of numerical values for each predetermined time interval.
- graph A an example of waveform data is shown.
- the plurality of curves shown in the graph A respectively correspond to the waveform data as a component of the operation data acquired by one operation of the brake device 11.
- the brake device abnormality diagnosis system 1 starts learning by an operation of the operator of the information center 21, for example.
- the data acquisition unit 29 When the brake device abnormality diagnosis system 1 starts learning, the data acquisition unit 29 generates a training data set.
- the data acquisition unit 29 acquires a plurality of observation data from the observation data storage unit 25.
- the data acquisition unit 29 acquires a plurality of attribute data from the attribute data storage unit 26.
- the data acquisition unit 29 acquires a plurality of determination data from the abnormal data storage unit 27.
- the data acquisition unit 29 generates a plurality of motion data and a plurality of environment data from a plurality of observation data and a plurality of attribute data.
- the data acquisition unit 29 associates the plurality of determination data with the plurality of operation data and the plurality of environment data. At this time, the data acquisition unit 29 may make the association using, for example, the operation time of the brake device 11.
- the data acquisition unit 29 may make the association using the identification information.
- the data acquisition unit 29 generates a training data set based on the association.
- the data acquisition unit 29 outputs the training data set to the classification unit 30.
- the classification unit 30 classifies the operation data corresponding to the environmental data based on the environmental data included in the training data set. For example, when the environmental data includes labeling data for classification, the classification unit 30 classifies the operation data corresponding to the environmental data having the same labeling data values into the same cluster. Alternatively, the classification unit 30 classifies the motion data corresponding to the environment data classified into the same cluster by the method of unsupervised learning into the same cluster, for example. At this time, the classification unit 30 uses, for example, a k-means method that is a non-hierarchical classification method as a method of unsupervised learning. Alternatively, the classification unit 30 may use a hierarchical classification method. The classification unit 30 outputs the classified operation data to the conversion unit 31.
- the conversion unit 31 converts the operation data into state data through each of the feature amount extraction process, the standardization process, the abnormality degree calculation process, and the preliminary process for each classification by the classification unit 30.
- the conversion unit 31 converts the classified plurality of motion data into a plurality of feature data.
- the conversion unit 31 extracts one or more feature quantities for each component of the motion data.
- the conversion unit 31 extracts a numerical value such as +1 or -1 from the true value or the false value as a feature amount.
- the conversion unit 31 extracts the numerical value as it is as a feature amount. For example, when the component of motion data is represented by a list of numerical values in waveform data or the like, the conversion unit 31 extracts, for example, the average value and standard deviation of the numerical values included in the list as one or more feature quantities.
- the conversion unit 31 extracts, for example, a plurality of numerical values included in the list as a plurality of feature amounts as they are.
- the conversion unit 31 may extract the feature amount from the component of the motion data by a method not illustrated here.
- the conversion unit 31 generates multi-component feature data including, as a component, one or more feature quantities extracted for each component of the motion data.
- the conversion unit 31 converts a plurality of characteristic data into a plurality of standardized data.
- the standardized data is multi-component data.
- the conversion unit 31 converts each component of the characteristic data into each component of the standardized data.
- the components of the standardized data are standardized so that the average for the classification including the original motion data becomes 0, for example.
- the components of the standardized data are standardized so that the standard deviation for the classification including the original motion data is 1, for example.
- the conversion unit 31 converts a plurality of standardized data into a plurality of abnormality degree data.
- the abnormality data is multi-component data.
- Each component of the degree-of-abnormality data is an index representing a difference from the normal state.
- Each component of the abnormality degree data is calculated from each component of the characteristic data, for example.
- the conversion unit 31 calculates each component of the abnormality degree data by dividing the squared deviation from the average value by the variance for each component of the characteristic data.
- the conversion unit 31 may convert the standardized data into the abnormality degree data by another method such as machine learning.
- the conversion unit 31 converts a plurality of abnormality degree data into a plurality of state data.
- the conversion unit 31 applies an unsupervised learning method to the abnormality degree data as a preliminary process.
- An unsupervised learning method is, for example, a dimension reduction method using PCA (Principal Component Analysis).
- the unsupervised learning method is, for example, a clustering method based on the k-means method.
- the conversion unit 31 outputs to the learning unit 32 the plurality of determination data included in the training data set and the plurality of state data converted from the plurality of motion data corresponding to the plurality of determination data.
- graph B an example of two-component state data is shown.
- the horizontal axis of the graph B represents the first component of the state data.
- the vertical axis of the graph B represents the second component of the state data.
- each point represents the state data converted from the operation data acquired by one operation of the brake device 11.
- the state data may be data of one component or three or more components.
- the learning unit 32 learns a diagnostic model for each classification by the classification unit 30 based on a plurality of state data, for example, by a supervised learning method using a plurality of determination data as teacher data.
- the supervised learning method is, for example, a linear or non-linear classification method.
- the supervised learning method is, for example, a k-nearest neighbor method, discriminant analysis, or SVM (Support Vector Machine).
- SVM Small Vector Machine
- the status data indicating a normal status is represented by a white circle.
- the state data representing a normal state is classified into one of two clusters representing a normal state.
- the determination unit 33 is activated by the operation of the operator of the information center 21, for example.
- the determination unit 33 reads the diagnostic model stored in the learning unit 32 when it is activated.
- the classification unit 30 When the determination unit 33 is activated, when acquiring the observation data from the observation unit 28, the classification unit 30 acquires the attribute data of the elevator 2 corresponding to the observation data from the attribute data storage unit 26. The classification unit 30 acquires operation data and environmental data from the observation data and the attribute data. The classification unit 30 classifies the motion data based on the environmental data. The classification unit 30 outputs the classified operation data to the conversion unit 31.
- the conversion unit 31 converts the operation data into state data according to the classification by the classification unit 30. At this time, the conversion unit 31 performs conversion into state data by the same method as the operation data included in the training data set. That is, the conversion unit 31 performs conversion so that the same state data can be obtained from the same operation data. The conversion unit 31 outputs the converted state data to the determination unit 33.
- the determination unit 33 determines an abnormality of the brake device 11 using the state data based on the diagnostic model read from the learning unit 32.
- the determination unit 33 acquires, for example, the presence / absence of abnormality, the type of abnormality, and the degree of abnormality as a result of the determination of abnormality of the brake device 11. For example, when learning is performed in the learning unit 32 by a classification method such as the k-nearest neighbor method, the determination unit 33 determines whether or not there is an abnormality in the brake device 11 based on the label of the cluster into which the preprocessed data is classified. Get the type and degree of abnormality.
- the status data indicating an abnormal status is represented by a black circle.
- the determination unit 33 determines that the state data represents an abnormal state, for example, when the state data is not classified into any of the two clusters representing the normal state. There may be one or three or more clusters that represent a normal state. Alternatively, the determination unit 33 may determine that the state data represents an abnormal state when the state data is classified into one or more clusters representing an abnormal state.
- the judgment unit 33 outputs the judgment result data to the storage unit 36.
- the determination result data includes the presence / absence of abnormality of the brake device 11, the type of abnormality, and the degree of abnormality, which the determination unit 33 acquires as a result of the determination.
- the determination result data includes abnormality degree data.
- the determination result data includes data on the margin until it is determined to be abnormal.
- the margin until the abnormality is determined is, for example, the minimum value of the distance between the point corresponding to the state data in the space after the dimension reduction and the center of gravity of the cluster representing the abnormality.
- the storage unit 36 stores the determination result.
- the judgment unit 33 outputs a request signal to the control panel 12 based on the judgment result.
- the determination unit 33 outputs a request signal as follows, for example.
- the determination unit 33 determines whether or not the result of the determination represents the inoperable state according to preset criteria, for example, based on the presence or absence of abnormality, the type of abnormality, or the degree of abnormality.
- the unoperable state is a state in which the elevator 2 cannot be operated.
- the output unit determines that the result of the determination represents the inoperable state when the state data is classified into a cluster representing an abnormality preset as an abnormality corresponding to the inoperable state, for example.
- the non-operational state includes, for example, a state in which the brake device 11 does not operate, or a state in which the degree of abnormality significantly deteriorates when the brake device 11 is operated.
- the determination unit 33 outputs a request signal for stopping the operation of the elevator 2 to the control panel 12 when the result of the determination indicates that the operation is impossible.
- the control panel 12 stops the operation of the elevator 2 according to the request signal.
- the determination unit 33 determines whether or not the result of the determination represents an abnormal state according to preset criteria, for example, based on the presence or absence of abnormality, the type of abnormality, or the degree of abnormality.
- the abnormal state is an abnormal state.
- the determination unit 33 determines that the result of the determination indicates an abnormal state, for example, when the state data is not classified into a cluster indicating normality.
- the determination unit 33 determines that the result of the determination represents an abnormal state when the state data is classified into, for example, a cluster indicating any abnormality.
- the determination unit 33 brakes as an operation test in a state where the car 10 is stopped at the same position where the car 10 was stopped when the determination was made.
- a request signal for operating the device 11 is output to the control panel 12.
- the control panel 12 causes the brake device 11 to operate as an operation test without running the car 10.
- the observation unit 28 acquires operation data.
- the classification unit 30 classifies the motion data acquired by the observation unit 28.
- the conversion unit 31 converts the operation data classified by the classification unit 30 into state data.
- the determination unit 33 determines again the abnormality of the brake device 11 from the state data converted by the conversion unit 31 based on the diagnostic model.
- the determination unit 33 may not perform the operation test.
- the determination unit 33 performs an operation test in a state where the car 10 is stopped at a position different from the position where the car 10 is stopped when the determination is performed, when the result of the determination made again indicates an abnormal state.
- a request signal for operating the brake device 11 is output to the control panel 12.
- the control panel 12 runs the car 10 according to the request signal.
- the control panel 12 causes the brake device 11 to operate as an operation test after the car 10 stops according to the request signal.
- the observation unit 28 acquires operation data.
- the classification unit 30 classifies the motion data acquired by the observation unit 28.
- the conversion unit 31 converts the operation data classified by the classification unit 30 into state data.
- the determination unit 33 determines the abnormality of the brake device 11 based on the diagnostic model from the state data converted by the conversion unit 31.
- the determination unit 33 determines that the braking device is in a state in which the car 10 is stopped on a floor different from the floor on which the car 10 was stopped when the determination was performed.
- a request signal for causing operation 11 may be output to the control panel 12.
- the determination unit 33 When determining the abnormality of the brake device 11, the determination unit 33 outputs the determination result data to the notification unit 37.
- the drivable state is, for example, a state in which the elevator 2 can be operated.
- the drivable state includes, for example, a normal state or a slightly abnormal state that does not hinder driving.
- the notification unit 37 generates notification data from the determination result data when the result of the determination of the abnormality of the brake device 11 by the determination unit 33 indicates that the vehicle is not in the operable state.
- the content of the notification data is, for example, the type of abnormality, the degree of abnormality, the number of state data similar to the determined state data, and the acquisition of the similar state data in the elevator 2 in which the similar state data is acquired. This includes the time when maintenance and inspections were performed.
- the notification unit 37 outputs the notification data to the display device 24 to notify the content of the notification data through the display device 24.
- the display device 24 displays the content of the notification data.
- the display shows, for example, "A type X abnormality has occurred. The degree of abnormality is 50%. Of the 100 similar cases in the past, 50 cases should be checked within one month, and 70 cases should be checked within two months. Is displayed. ”Is displayed.
- FIGS. 3 and 4 are flowcharts showing an example of the operation of the brake system abnormality diagnosis system according to the first embodiment.
- FIG. 3 the operation of learning the diagnostic model of the brake device abnormality diagnostic system 1 is shown.
- step S11 the classification unit 30 acquires the training data set from the data acquisition unit 29.
- the classification unit 30 classifies the operation data corresponding to the environmental data based on the environmental data included in the training data set. After that, the operation of the brake device abnormality diagnosis system 1 proceeds to step S12.
- step S12 the conversion unit 31 converts the operation data into state data for each classification by the classification unit 30. After that, the operation of the brake device abnormality diagnosis system 1 proceeds to step S13.
- step S13 the learning unit 32 learns an abnormality diagnosis model of the brake device 11 based on the state data. Then, the operation of the brake device abnormality diagnosis system 1 proceeds to step S14.
- step S14 the learning unit 32 saves the learned diagnostic model in a storage area that contains it. Then, the operation of the brake device abnormality diagnosis system 1 ends.
- FIG. 4 shows the operation of the brake device abnormality diagnosis system 1 for abnormality diagnosis.
- step S21 the determination unit 33 reads the diagnostic model from the learning unit 32. Then, the operation of the brake device abnormality diagnosis system 1 proceeds to step S22.
- step S22 the classification unit 30 acquires observation data from the observation unit 28.
- the classification unit 30 acquires the attribute data from the attribute data storage unit 26.
- the classification unit 30 acquires operation data and environmental data from the observation data and the attribute data.
- the classification unit 30 classifies the motion data based on the environmental data. After that, the operation of the brake device abnormality diagnosis system 1 proceeds to step S23.
- step S23 the conversion unit 31 converts the operation data into state data for each classification by the classification unit 30. Then, the operation of the brake device abnormality diagnosis system 1 proceeds to step S24.
- step S24 the determination unit 33 determines the abnormality of the brake device 11 from the state data based on the read diagnostic model. After that, the operation of the brake device abnormality diagnosis system 1 proceeds to step S25.
- step S25 the determination unit 33 outputs the determination result to the notification unit 37 and the storage unit 36. Then, the operation of the brake device abnormality diagnosis system 1 proceeds to step S22.
- the braking device abnormality diagnosis system 1 includes the observation unit 28, the conversion unit 31, the data acquisition unit 29, the learning unit 32, and the determination unit 33.
- the observation unit 28 acquires operation data about the operation of the brake device 11 when the brake device 11 operates.
- the braking device 11 brakes the car 10 of the elevator 2.
- the conversion unit 31 converts the operation data acquired by the observation unit 28 into state data corresponding to the failure phenomenon of the brake device 11.
- the data acquisition unit 29 acquires determination data for determining an abnormality in the brake device 11.
- the learning unit 32 uses the state data and the determination data to learn the diagnostic model for the abnormality of the brake device 11 by the supervised learning method.
- the determination unit 33 determines the abnormality of the brake device 11 based on the diagnostic model from the state data obtained by converting the operation data acquired by the observation unit 28 after the learning by the learning unit 32 by the conversion unit 31.
- the determination unit 33 determines the abnormality of the brake device 11 based on the diagnostic model learned by the supervised learning method.
- the threshold for diagnosing abnormality is not required in advance. For this reason, the abnormality of the brake device 11 can be diagnosed based on the data whose threshold for diagnosing the abnormality is unknown.
- the observation unit 28 can acquire various data as operation data.
- the learning unit 32 learns by a learning method with a teacher. Therefore, the learning unit 32 can learn the diagnostic model based on the complicated determination condition.
- the determination unit 33 can distinguish between a state corresponding to many types of abnormalities and a normal state. Further, the determination unit 33 can accurately detect a sudden abnormality such that the time until the abnormality occurs cannot be predicted by a single linear expression.
- the brake device abnormality diagnosis system 1 includes a classification unit 30.
- the classification unit 30 classifies the operation data based on the environmental data on the operating environment of the brake device 11.
- the learning unit 32 learns the diagnostic model for each classification by the classification unit 30.
- the determination unit 33 determines the abnormality of the brake device 11 based on the diagnostic model learned for each classification by the classification unit 30.
- the learning unit 32 can perform a learning process using data sorted into meaningful classifications. Therefore, the learning unit 32 can learn a highly accurate diagnostic model even when there are a plurality of normal regions of the motion data due to environmental factors. Moreover, the amount of calculation in the learning of the learning unit 32 is reduced.
- the brake device abnormality diagnosis system 1 includes an informing unit 37.
- the notification unit 37 notifies the determination result of the abnormality of the brake device 11 by the determination unit 33.
- the display device 24 acquires the notification data from the notification unit 37.
- the display device 24 displays the content of the notification data. Thereby, for example, the operator of the information center 21 can quickly know the result of the abnormality determination.
- the brake device abnormality diagnosis system 1 includes a storage unit 36.
- the storage unit 36 stores the result of the determination of the abnormality of the brake device 11 by the determination unit 33.
- the notification unit 37 does not notify the result of the determination when the result of the determination indicates that the elevator 2 can be operated.
- the notification unit 37 does not notify the result of the determination indicating the state of low urgency. This makes it difficult to overlook highly urgent information.
- the determination unit 33 causes the brake device 11 to be in the same position as that of the car 10 of the elevator 2 when the determination is performed.
- a signal for braking 10 is output.
- the determination unit 33 uses the state data obtained by converting the operation data acquired by the observation unit 28 when the braking device 11 brakes the car 10 at the relevant position by the conversion unit 31 based on the diagnostic model. Determine abnormality.
- the determination unit 33 determines whether the result indicating the abnormal state is reproduced at the same position. Accordingly, the determination unit 33 can determine whether the result of the previous determination is due to an accidental factor. For example, when the result indicating the abnormal state is not reproduced, the determination unit 33 may determine that the result of the previous determination is due to an accidental factor.
- Accidental factors include, for example, electrical noise.
- the determination unit 33 causes the brake device 11 to be located at a position different from the position of the car 10 of the elevator 2 at the time when the determination is made. A signal for braking 10 is output.
- the determination unit 33 uses the state data obtained by converting the operation data acquired by the observation unit 28 when the braking device 11 brakes the car 10 at the relevant position by the conversion unit 31 based on the diagnostic model. Determine abnormality.
- the determination unit 33 determines whether the result indicating the abnormal state is reproduced at a different position. Accordingly, the determination unit 33 can determine whether the result of the previous determination is due to a local abnormality of the brake drum 15 or the brake shoe 16, for example. For example, when the result indicating the abnormal state is not reproduced, the determination unit 33 may determine that the result of the previous determination is due to a local abnormality of the brake drum 15 or the brake shoe 16. For example, when the result indicating the abnormal state is reproduced, the determination unit 33 may determine that the result of the previous determination is not due to a local abnormality of the brake drum 15 or the brake shoe 16.
- the determination unit 33 also outputs a signal to stop the operation of the elevator 2 when the result of the determination of the abnormality of the brake device 11 indicates that the elevator 2 cannot be operated.
- the elevator 2 stops immediately when an abnormality occurs that prevents the elevator 2 from operating. This ensures the safety of the user. Further, the deterioration of the abnormality of the brake device 11 is suppressed.
- the learning unit 32 may learn an abnormality diagnosis model of the brake device 11 by using an unsupervised learning method using the state data and the determination data.
- FIG. 5 is a diagram showing an example of abnormality diagnosis by the brake device abnormality diagnosis system according to the first embodiment.
- the data acquisition unit 29 When the brake device abnormality diagnosis system 1 starts learning, the data acquisition unit 29 generates a training data set. At this time, the training data set generated by the data acquisition unit 29 may not include the determination data.
- the conversion unit 31 converts a plurality of operation data classified by the classification unit 30 into a plurality of state data.
- Graph C shows an example of multiple converted state data.
- the horizontal axis of the graph C represents the number of times the brake device 11 has been operated.
- each point represents the state data converted from the operation data acquired by one operation of the brake device 11.
- the vertical axis of the graph C represents the value of the state data.
- the state data may be data of two or more components.
- the state data representing a normal state is represented by a white circle.
- the state data indicating an abnormal state is represented by a black circle.
- the learning unit 32 learns the diagnostic model for each classification by the classification unit 30 by the unsupervised learning method based on the plurality of state data.
- the unsupervised learning method is, for example, a linear or non-linear classification method.
- the unsupervised learning method is, for example, an outlier detection method.
- An unsupervised learning method is, for example, one-class SVM.
- the unsupervised learning method is, for example, the LOF (Local Outlier Factor) method.
- the unsupervised learning method is a classification method such as the k-means method.
- the learning unit 32 may learn the diagnostic model by determining the cluster as an outlier.
- the learning unit 32 learns the diagnostic model so that, for example, when the state data converted from the newly acquired motion data is determined to be an outlier, the state data represents an abnormal state.
- the learning unit 32 may detect the outlier by using the data converted from the state data.
- the learning unit 32 After learning the diagnostic model, the learning unit 32 saves the diagnostic model in a built-in storage area. Note that, for example, a label indicating the presence / absence of abnormality, the type of abnormality, or the degree of abnormality may be subsequently attached to the cluster classified by the diagnostic model.
- the determination unit 33 determines the abnormality of the brake device 11 based on the diagnostic model learned by the unsupervised learning method.
- the threshold for diagnosing abnormality is not required in advance. For this reason, the abnormality of the brake device 11 can be diagnosed based on the data whose threshold for diagnosing the abnormality is unknown. Further, the learning unit 32 does not need the determination data.
- the observation unit 28 can acquire various data as operation data.
- the learning unit 32 learns by a learning method with a teacher. Therefore, the learning unit 32 can learn the diagnostic model based on the complicated determination condition.
- the determination unit 33 can distinguish between a state corresponding to many types of abnormalities and a normal state. Further, the determination unit 33 can accurately detect a sudden abnormality such that the time until the abnormality occurs cannot be predicted by a single linear expression.
- the brake device abnormality diagnosis system 1 also includes a prediction unit 35 that predicts the deterioration time of the brake device 11 based on the operation data.
- the classification unit 30 may classify the operation data based on the environmental data and the deterioration time predicted by the prediction unit 35.
- the brake device 11 different kinds of abnormalities may occur depending on the period of use of parts to be replaced, for example. For example, at the beginning of the use period, an abnormality due to a manufacturing defect or the like may occur. For example, in the middle of the usage period, an abnormality may occur due to an accidental cause. For example, at the end of the usage period, an abnormality due to wear of parts may occur.
- the prediction of the deterioration time by the prediction unit 35 reflects the usage period of the component.
- the classification unit 30 classifies the operation data based on the prediction of the deterioration time by the prediction unit 35. Therefore, the learning unit 32 can learn the diagnostic model for determining an abnormality according to the usage period of the component. As a result, the accuracy of determination of abnormality by the determination unit 33 is improved.
- the conversion unit 31 may change the order of each process when converting operation data into state data.
- the conversion unit 31 may omit one or more steps in the conversion of operation data into state data.
- the converting unit 31 may calculate one abnormality degree component from a plurality of components of the standardized data in the abnormality degree calculation step. As a result, the brake device abnormality diagnosis system 1 can detect an abnormality that has occurred in the relationship between the plurality of components of the standardized data.
- the determination unit 33 may determine the threshold value for determining that an abnormality has occurred by using a ROC (Receiver Operating Characteristic) curve. For example, when the state data is multidimensional data, the determination unit 33 determines the abnormality using the component of the state data that maximizes the AUC (Area Under Curve) of the ROC curve. At this time, the threshold value for determining that an abnormality has occurred is, for example, a value at which Youindex becomes maximum.
- ROC Receiveiver Operating Characteristic
- the control panel 12 may suspend the operation test until the user gets off the car.
- the result of the determination performed by the determination unit 33 from the state data obtained by converting the operation data acquired by the observation unit 28 by the conversion unit 31 when the brake device 11 operates while suspending the operation test.
- the control panel 12 may cancel the operation test when does not indicate an abnormal state.
- the determination unit 33 may add data indicating that the operation test has been canceled to the determination result data.
- the determination unit 33 may add data indicating the possibility of being due to an accidental factor to the determination result data regarding the determination. Alternatively, when the determination result is determined to be due to an accidental factor, the determination unit 33 may cancel the determination result. At this time, the determination unit 33 may correct the result of the determination as a result indicating a normal state.
- the determination unit 33 When it is determined that the determination result is due to a local abnormality of the brake drum 15 or the brake shoe 16, for example, the determination unit 33 indicates in the determination result data regarding the determination that the determination result data is due to a local abnormality. Data may be added.
- the notification unit 37 may notify the maintenance staff of the content of the notification data by outputting the notification data to the maintenance terminal possessed by the maintenance staff.
- the notification unit 37 may notify by outputting the notification data to a plurality of output destinations at the same time.
- the notification unit 37 may notify the user of the content of the notification data by outputting the notification data to the display device 24 through the monitoring device 13 or the like.
- the display device 24 displays "This elevator cannot be used" or the like. Thereby, the user can be notified of the result of the determination as to whether or not the elevator 2 can be used.
- the brake system abnormality diagnosis system 1 can use information on the elevator 2 and other elevators. As a result, the accuracy of abnormality diagnosis of the brake device abnormality diagnosis system 1 is improved.
- Provision of the classification unit 30 in the information center 21 facilitates maintenance such as updating the algorithm for classifying operation data.
- Providing the conversion unit 31 in the information center 21 facilitates maintenance such as updating the algorithm for converting operation data.
- Providing the learning unit 32 in the information center 21 facilitates maintenance such as updating the algorithm for learning the diagnostic model.
- the maintenance support device 23 may be provided in the building 3. At this time, the maintenance support device 23 directly communicates with the control panel 12, for example.
- the maintenance support device 23 communicates with the data server 22 through the monitoring device 13, for example.
- the data server 22 may be provided in the building 3.
- a part or all of the functions of the brake device abnormality diagnosis system 1 may be realized by a device provided in the building 3.
- the determination unit 33 may be realized by a device provided in the building 3. At this time, the determination unit 33 can quickly determine the abnormality of the brake device 11 without being affected by the communication failure that may occur between the building 3 and the information center 21.
- the electrical connection between the system, device, device, part and the like in the first embodiment may be either direct or indirect connection.
- Communication of data and the like between the systems, devices, devices, parts and the like in the first embodiment may be either direct or indirect communication.
- FIG. 6 is a diagram showing a hardware configuration of main parts of the brake device abnormality diagnosis system according to the first embodiment.
- Each function of the brake device abnormality diagnosis system 1 can be realized by a processing circuit.
- the processing circuit includes at least one processor 1b and at least one memory 1c.
- the processing circuit may include at least one dedicated hardware 1a together with or as a substitute for the processor 1b and the memory 1c.
- each function of the brake device abnormality diagnosis system 1 is realized by software, firmware, or a combination of software and firmware. At least one of software and firmware is described as a program.
- the program is stored in the memory 1c.
- the processor 1b realizes each function of the brake device abnormality diagnosis system 1 by reading and executing the program stored in the memory 1c.
- the processor 1b is also called a CPU (Central Processing Unit), a processing device, a computing device, a microprocessor, a microcomputer, and a DSP.
- the memory 1c is configured by a nonvolatile or volatile semiconductor memory such as RAM, ROM, flash memory, EPROM, EEPROM, etc., a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, a DVD, etc.
- the processing circuit includes the dedicated hardware 1a
- the processing circuit is realized by, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof.
- Each function of the brake device abnormality diagnosis system 1 can be realized by a processing circuit.
- each function of the brake device abnormality diagnosis system 1 can be collectively realized by a processing circuit.
- Part of each function of the brake device abnormality diagnosis system 1 may be realized by dedicated hardware 1a, and the other part may be realized by software or firmware.
- the processing circuit realizes each function of the brake device abnormality diagnosis system 1 by the hardware 1a, the software, the firmware, or a combination thereof.
- the brake system abnormality diagnosis system according to the present invention can be applied to an elevator.
- 1 brake device abnormality diagnosis system 2 elevators, 3 buildings, 4 hoistways, 5 landings, 6 landing doors, 7 hoisting machines, 8 main ropes, 9 balancing weights, 10 baskets, 11 braking devices, 12 control panels, 13 monitoring devices, 14 car doors, 15 brake drums, 16 brake shoes, 17 coils, 18 plungers, 19 springs, 20 brake control devices, 21 information centers, 22 data servers, 23 maintenance support devices, 24 display devices, 25 observations Data storage unit, 26 attribute data storage unit, 27 abnormal data storage unit, 28 observation unit, 29 data acquisition unit, 30 classification unit, 31 conversion unit, 32 learning unit, 33 determination unit, 34 generation unit, 35 prediction unit 36 storage unit, 37 notification unit, 1a hardware, 1b processor, 1c memory
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Abstract
Description
図1は、実施の形態1に係るブレーキ装置異常診断システム1の構成図である。
図2は、実施の形態1に係るブレーキ装置異常診断システムによる異常診断の例を示す図である。
図3および図4は、実施の形態1に係るブレーキ装置異常診断システムの動作の例を示すフローチャートである。
図5は、実施の形態1に係るブレーキ装置異常診断システムによる異常診断の例を示す図である。
図6は、実施の形態1に係るブレーキ装置異常診断システムの主要部のハードウェア構成を示す図である。
Claims (9)
- エレベーターのかごを制動するブレーキ装置が動作するときに、前記ブレーキ装置の動作についての動作データを取得する観測部と、
前記観測部が取得した前記動作データを前記ブレーキ装置の故障現象に対応する状態データに変換する変換部と、
前記ブレーキ装置について異常を判定した判定データを取得するデータ取得部と、
前記状態データおよび前記判定データを用いて前記ブレーキ装置の異常の診断モデルを教師あり学習の手法によって学習する学習部と、
前記学習部による学習の後に前記観測部が取得した動作データを前記変換部が変換して得られる状態データから前記診断モデルに基づいて前記ブレーキ装置の異常を判定する判定部と、
を備えるエレベーターのブレーキ装置異常診断システム。 - エレベーターのかごを制動するブレーキ装置が動作するときに、前記ブレーキ装置の動作についての動作データを取得する観測部と、
前記観測部が取得した前記動作データを前記ブレーキ装置の故障現象に対応する状態データに変換する変換部と、
前記状態データを用いて前記ブレーキ装置の異常の診断モデルを教師なし学習の手法によって学習する学習部と、
前記学習部による学習の後に前記観測部が取得した動作データを前記変換部が変換して得られる状態データから前記診断モデルに基づいて前記ブレーキ装置の異常を判定する判定部と、
を備えるエレベーターのブレーキ装置異常診断システム。 - 前記ブレーキ装置の動作環境についての環境データに基づいて、前記動作データを分類する分類部
を備え、
前記学習部は、前記分類部による分類ごとに前記診断モデルを学習し、
前記判定部は、前記分類部による分類ごとに学習された前記診断モデルに基づいて前記ブレーキ装置の異常を判定する請求項1または請求項2に記載のエレベーターのブレーキ装置異常診断システム。 - 前記判定部による前記ブレーキ装置の異常の判定の結果を報知する報知部
を備える請求項1から請求項3のいずれか一項に記載のエレベーターのブレーキ装置異常診断システム。 - 前記判定部による前記ブレーキ装置の異常の判定の結果を記憶する記憶部
を備え、
前記報知部は、エレベーターの運転ができる状態を当該判定の結果が表すときに、当該判定の結果を報知しない請求項4に記載のエレベーターのブレーキ装置異常診断システム。 - 前記判定部は、前記ブレーキ装置の異常の判定の結果が正常ではない状態を表すときに、当該判定が行われたときのエレベーターのかごの位置と同じ位置で前記ブレーキ装置に前記かごを制動させる信号を出力し、前記ブレーキ装置が当該位置で前記かごを制動するときに前記観測部が取得する動作データを前記変換部が変換して得られる状態データから、前記診断モデルに基づいて前記ブレーキ装置の異常を判定する請求項1から請求項5のいずれか一項に記載のエレベーターのブレーキ装置異常診断システム。
- 前記判定部は、前記ブレーキ装置の異常の判定の結果が正常ではない状態を表すときに、当該判定が行われたときのエレベーターのかごの位置と異なる位置で前記ブレーキ装置に前記かごを制動させる信号を出力し、前記ブレーキ装置が当該位置で前記かごを制動するときに前記観測部が取得する動作データを前記変換部が変換して得られる状態データから、前記診断モデルに基づいて前記ブレーキ装置の異常を判定する請求項1から請求項6のいずれか一項に記載のエレベーターのブレーキ装置異常診断システム。
- 前記判定部は、エレベーターの運転ができない状態を前記ブレーキ装置の異常の判定の結果が表すときに、エレベーターの運転を停止させる信号を出力する請求項1から請求項7のいずれか一項に記載のエレベーターのブレーキ装置異常診断システム。
- 前記動作データに基づいて前記ブレーキ装置の劣化時期を予測する予測部
を備え、
前記分類部は、前記環境データと前記予測部が予測する前記劣化時期とに基づいて前記動作データを分類する請求項3に記載のエレベーターのブレーキ装置異常診断システム。
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KR1020217010536A KR102509840B1 (ko) | 2018-10-19 | 2018-10-19 | 엘리베이터의 브레이크 장치 이상 진단 시스템 |
JP2020551703A JP7056753B6 (ja) | 2018-10-19 | 2018-10-19 | エレベーターのブレーキ装置異常診断システム |
CN201880098453.9A CN112805233B (zh) | 2018-10-19 | 2018-10-19 | 电梯的制动装置异常诊断*** |
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WO2022259966A1 (ja) * | 2021-06-10 | 2022-12-15 | 国立大学法人東京大学 | 人工衛星監視装置、人工衛星監視方法及びプログラム |
WO2023058190A1 (ja) * | 2021-10-07 | 2023-04-13 | 三菱電機株式会社 | エレベーター制御検査システムおよびエレベーター制御検査方法 |
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JP7056753B6 (ja) | 2022-06-10 |
CN112805233A (zh) | 2021-05-14 |
KR20210055762A (ko) | 2021-05-17 |
KR102509840B1 (ko) | 2023-03-14 |
JPWO2020079842A1 (ja) | 2021-09-16 |
CN112805233B (zh) | 2023-01-31 |
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