The subject matter disclosed herein generally relates to elevator systems and, more particularly, to an elevator sensor calibration system for elevator sensor analytics and calibration.
An elevator system can include various sensors to detect the current state of system components and fault conditions. To perform certain types of fault or degradation detection, precise sensor calibration may be needed. Sensor systems as manufactured and installed can have some degree of variation. Sensor system responses can vary compared to an ideal system due to these sensor system differences and installation differences, such as elevator component characteristic variations in weight, structural features, and other installation effects.
According to some embodiments, an elevator sensor calibration system is provided. The elevator sensor calibration system includes one or more sensors operable to monitor an elevator system, an elevator sensor calibration device, and a computing system. The computing system includes a memory and a processor that collects a plurality of baseline sensor data from the one or more sensors during movement of an elevator component, collects a plurality of disturbance data from the one or more sensors while the elevator component is displaced responsive to contact with the elevator sensor calibration device during movement of the elevator component, and performs analytics model calibration to calibrate a trained model based on one or more response changes between the baseline sensor data and the disturbance data.
In addition to one or more of the features described above or below, or as an alternative, further embodiments may include where multiple movement speed profiles are applied to modify a rate of movement while collecting the baseline sensor data and the disturbance data.
In addition to one or more of the features described above or below, or as an alternative, further embodiments may include where more than one instance of the elevator sensor calibration device is contacted during movement of the elevator component.
In addition to one or more of the features described above or below, or as an alternative, further embodiments may include where the elevator sensor calibration device is sized to induce a first vibration profile upon impact between a first portion of the elevator sensor calibration device and the elevator component and to induce a second vibration profile upon impact between a second portion of the elevator sensor calibration device and the elevator component.
In addition to one or more of the features described above or below, or as an alternative, further embodiments may include where the elevator sensor calibration device comprises a rise ramp and a return ramp, and a first angle of the rise ramp is different from a second angle of the return ramp relative to a base portion of the elevator sensor calibration device.
In addition to one or more of the features described above or below, or as an alternative, further embodiments may include where the elevator component is a gib, and the elevator sensor calibration device is coupled to a sill including a sill groove that retains the gib to guide horizontal motion of an elevator door.
In addition to one or more of the features described above or below, or as an alternative, further embodiments may include where the elevator sensor calibration device contacts an elevated portion of the sill when coupled to the sill and positioned to impact the gib.
In addition to one or more of the features described above or below, or as an alternative, further embodiments may include where the elevator sensor calibration device fits at least partially within the sill groove when coupled to the sill and positioned to impact the gib.
In addition to one or more of the features described above or below, or as an alternative, further embodiments may include where the elevator component is a roller, and the elevator sensor calibration device is coupled to a door motion guidance track that guides horizontal motion of an elevator door hung by the roller on the door motion guidance track.
In addition to one or more of the features described above or below, or as an alternative, further embodiments may include where the elevator sensor calibration device wraps at least partially around the door motion guidance track.
According to some embodiments, a method of elevator sensor analytics and calibration is provided. The method includes collecting, by a computing system, a plurality of baseline sensor data from one or more sensors during movement of an elevator component. The computing system collects a plurality of disturbance data from the one or more sensors while the elevator component is displaced responsive to contact with an elevator sensor calibration device during movement of the elevator component. The computing system performs analytics model calibration to calibrate a trained model based on one or more response changes between the baseline sensor data and the disturbance data.
Technical effects of embodiments of the present disclosure include an elevator sensor calibration system with an elevator sensor calibration device for imparting an excitation force to an elevator component responsive to motion, detection of a response change in sensor data upon the elevator component contacting the elevator sensor calibration device, and calibration of a trained model based on the response change to improve fault detection accuracy.
The foregoing features and elements may be combined in various combinations without exclusivity, unless expressly indicated otherwise. These features and elements as well as the operation thereof will become more apparent in light of the following description and the accompanying drawings. It should be understood, however, that the following description and drawings are intended to be illustrative and explanatory in nature and non-limiting.
The present disclosure is illustrated by way of example and not limited in the accompanying figures in which like reference numerals indicate similar elements.
A detailed description of one or more embodiments of the disclosed apparatus and method are presented herein by way of exemplification and not limitation with reference to the Figures.
The load bearing members 107 engage the machine 111, which is part of an overhead structure of the elevator system 101. The machine 111 is configured to control movement between the elevator car 103 and the counterweight 105. The position encoder 113 may be mounted on an upper sheave of a speed-governor system 119 and may be configured to provide position signals related to a position of the elevator car 103 within the elevator shaft 117. In other embodiments, the position encoder 113 may be directly mounted to a moving component of the machine 111, or may be located in other positions and/or configurations as known in the art.
The elevator controller 115 is located, as shown, in a controller room 121 of the elevator shaft 117 and is configured to control the operation of the elevator system 101, and particularly the elevator car 103. For example, the elevator controller 115 may provide drive signals to the machine 111 to control the acceleration, deceleration, leveling, stopping, etc. of the elevator car 103. The elevator controller 115 may also be configured to receive position signals from the position encoder 113. When moving up or down within the elevator shaft 117 along guide rail 109, the elevator car 103 may stop at one or more landings 125 as controlled by the elevator controller 115. Although shown in a controller room 121, those of skill in the art will appreciate that the elevator controller 115 can be located and/or configured in other locations or positions within the elevator system 101. In some embodiments, the elevator controller 115 can be configured to control features within the elevator car 103, including, but not limited to, lighting, display screens, music, spoken audio words, etc.
The machine 111 may include a motor or similar driving mechanism and an optional braking system. In accordance with embodiments of the disclosure, the machine 111 is configured to include an electrically driven motor. The power supply for the motor may be any power source, including a power grid, which, in combination with other components, is supplied to the motor. Although shown and described with a rope-based load bearing system, elevator systems that employ other methods and mechanisms of moving an elevator car within an elevator shaft, such as hydraulics or any other methods, may employ embodiments of the present disclosure.
The elevator car 103 includes at least one elevator door assembly 130 operable to provide access between the each landing 125 and the interior (passenger portion) of the elevator car 103.
The sensors 214 can be any type of motion, position, force or acoustic sensor, such as an accelerometer, a velocity sensor, a position sensor, a force sensor, a microphone, or other such sensors known in the art. The elevator door controller 216 can collect data from the sensors 214 for control and/or diagnostic/prognostic uses. For example, when embodied as accelerometers, acceleration data (e.g., indicative of vibrations) from the sensors 214 can be analyzed for spectral content indicative of an impact event, component degradation, or a failure condition. Data gathered from different physical locations of the sensors 214 can be used to further isolate a physical location of a degradation condition or fault depending, for example, on the distribution of energy detected by each of the sensors 214. In some embodiments, disturbances associated with the door motion guidance track 202 can be manifested as vibrations on a horizontal axis (e.g., direction of door travel when opening and closing) and/or on a vertical axis (e.g., up and down motion of rollers 210 bouncing on the door motion guidance track 202). Disturbances associated with the sill 208 can be manifested as vibrations on the horizontal axis and/or on a depth axis (e.g., in and out movement between the interior of the elevator car 103 and an adjacent landing 125.
Embodiments are not limited to elevator door systems but can include any elevator sensor system within the elevator system 101 of
The elevator sensor calibration device 402 can be sized to wrap at least partially around the door motion guidance track 202. Sizing of the elevator sensor calibration device 402 may be determined based on the desired response characteristics at the point of initial impact of the rollers 210, an amount of desired deflection from the door motion guidance track 202, a length of the disturbance, and a rate of return to the door motion guidance track 202, among other factors. Accordingly, various profiles of the elevator sensor calibration device 402 can be created to induce different responses in the elevator door 204. For instance, as depicted in
The elevator sensor calibration device 602 can be sized to contact an elevated portion 306 (
Various profiles of the elevator sensor calibration device 602 can be created to induce different responses in the elevator door 204. For instance, as depicted in
In some embodiments, the first angle (Θ1) of the rise ramp 1010 is different from the second angle (Θ2) of the return ramp 1014 to induce different responses. In other embodiments, the first angle (Θ1) of the rise ramp 1010 is substantially the same as the second angle (Θ2) of the return ramp 1014 to prevent installation/user errors. In the example of
Referring now to
Further, as noted, the memory 1202 may store data 1206. The data 1206 may include, but is not limited to, elevator car data, elevator modes of operation, commands, or any other type(s) of data as will be appreciated by those of skill in the art. The instructions stored in the memory 1202 may be executed by one or more processors, such as a processor 1208. The processor 1208 may be operative on the data 1206.
The processor 1208, as shown, is coupled to one or more input/output (I/O) devices 1210. In some embodiments, the I/O device(s) 1210 may include one or more of a keyboard or keypad, a touchscreen or touch panel, a display screen, a microphone, a speaker, a mouse, a button, a remote control, a joystick, a printer, a telephone or mobile device (e.g., a smartphone), a sensor, etc. The I/O device(s) 1210, in some embodiments, include communication components, such as broadband or wireless communication elements.
The components of the computing system 1200 may be operably and/or communicably connected by one or more buses. The computing system 1200 may further include other features or components as known in the art. For example, the computing system 1200 may include one or more transceivers and/or devices configured to transmit and/or receive information or data from sources external to the computing system 1200 (e.g., part of the I/O devices 1210). For example, in some embodiments, the computing system 1200 may be configured to receive information over a network (wired or wireless) or through a cable or wireless connection with one or more devices remote from the computing system 1200 (e.g. direct connection to an elevator machine, etc.). The information received over the communication network can stored in the memory 1202 (e.g., as data 1206) and/or may be processed and/or employed by one or more programs or applications (e.g., program 1204) and/or the processor 1208.
The computing system 1200 is one example of a computing system, controller, and/or control system that is used to execute and/or perform embodiments and/or processes described herein. For example, the computing system 1200, when configured as part of an elevator control system, is used to receive commands and/or instructions and is configured to control operation of an elevator car through control of an elevator machine. For example, the computing system 1200 can be integrated into or separate from (but in communication therewith) an elevator controller and/or elevator machine and operate as a portion of a calibration system for sensors 214 of
The computing system 1200 is configured to operate and/or control calibration of the sensors 214 of
At block 1302, a computing system 1200 collects a plurality of baseline sensor data from one or more sensors 214 during movement of an elevator component 1032. For example, movement can include cycling an elevator door 204, 1104 between an open and a closed position and/or between a closed and open position one or more times.
At block 1304, the computing system 1200 collects a plurality of disturbance data from the one or more sensors 214 while the elevator component 1032 is displaced responsive to contact with an elevator sensor calibration device 402, 602, 1002 during movement of the elevator component 1032.
At block 1306, the computing system 1200 can perform analytics model calibration to calibrate a trained model based on one or more response changes between the baseline sensor data and the disturbance data. For example, time based and/or frequency based analysis can be used to determine how response changes between the baseline sensor data and the disturbance data differs from an expected performance profile. Various adjustments, such as gains, delays, and the like, can be made to account for in the field variations versus ideal performance characteristics. In some embodiments analytics model calibration applies one or more transfer learning algorithms, such as baseline relative feature extraction, baseline affine mean shifting, similarity-based feature transfer, covariate shifting by kernel mean matching, and/or other transfer learning techniques known in the art, to develop a transfer function for calibrating features of a trained model based on response changes between the baseline sensor data and the disturbance data. The trained model can establish a baseline designation, a fault designation, and one or more fault detection boundaries for the elevator component 1032. The result of applying a learned transfer function to the trained model can include calibration of a fault data signature and one or more detection boundary (e.g., defining fault/no fault classification criteria) according to the specific waveform propagation characteristics observed in the disturbance data. A calibrated fault detection boundary and a calibrated fault designation (i.e., data signature) can represent a calibrated analytics model. A fault designation can include, for instance, one or more of: a roller fault, a track fault, a sill fault, a door lock fault, a belt tension fault, a car door fault, a hall door fault, and other such faults associated with elevator system 101.
In some embodiments, multiple movement speed profiles can be applied to modify a rate of movement (e.g., opening/closing the elevator door 204, 1104) while collecting the baseline sensor data and the disturbance data. Changing the speed and/or acceleration of elevator component 1032 in various calibration tests can further enhance the ability reach particular frequency ranges when impacting the elevator sensor calibration device 402, 602, 1002. Further features may be observed by adjusting the placement position of the elevator sensor calibration device 402, 602, 1002 and/or contacting more than one instance of the elevator sensor calibration device 402, 602, 1002 during movement of the elevator component 1032.
As described herein, in some embodiments various functions or acts may take place at a given location and/or in connection with the operation of one or more apparatuses, systems, or devices. For example, in some embodiments, a portion of a given function or act may be performed at a first device or location, and the remainder of the function or act may be performed at one or more additional devices or locations.
Embodiments may be implemented using one or more technologies. In some embodiments, an apparatus or system may include one or more processors and memory storing instructions that, when executed by the one or more processors, cause the apparatus or system to perform one or more methodological acts as described herein. Various mechanical components known to those of skill in the art may be used in some embodiments.
Embodiments may be implemented as one or more apparatuses, systems, and/or methods. In some embodiments, instructions may be stored on one or more computer program products or computer-readable media, such as a transitory and/or non-transitory computer-readable medium. The instructions, when executed, may cause an entity (e.g., an apparatus or system) to perform one or more methodological acts as described herein.
The term “about” is intended to include the degree of error associated with measurement of the particular quantity based upon the equipment available at the time of filing the application. For example, “about” can include a range of ±8% or 5%, or 2% of a given value.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” and/or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, element components, and/or groups thereof.
While the present disclosure has been described with reference to an exemplary embodiment or embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present disclosure. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the present disclosure without departing from the essential scope thereof. Therefore, it is intended that the present disclosure not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this present disclosure, but that the present disclosure will include all embodiments falling within the scope of the claims.