System and method for detecting an inoperative state of an elevator system

Abstract

The present invention relates to a system for detecting an inoperative state of an elevator system. The system includes: a signaling sensor unit, at least one actuator sensor device, and a monitoring unit. The signaling sensor unit is configured to obtain signaling traffic data of at least one control system bus of the elevator system. The at least one actuator sensor device is configured to obtain actuator output data of at least one actuator entity of the elevator system after the obtained signaling traffic data. The monitoring unit is configured to: generate reference actuator output data by applying a machine learning module after the obtained signaling traffic data, and generate a signal indicating the inoperative state of the elevator system to an external computing entity in response to detecting a deviation between the obtained output data and the generated reference output data. The present invention also relates to a method for detecting an inoperative state of an elevator system.

Description

Technical Field

[0001] The present invention generally relates to the technical field of elevator systems. In particular, the present invention relates to monitoring the status of an elevator system. Background Art

[0002] For many different reasons, such as due to technical failures, vandalism, etc., an elevator system may stop operating. For example, the movement of an elevator car may stop. In order to minimize the impact on passengers when the elevator system is not working, it is necessary to generate a service request as soon as possible so that maintenance technicians can be dispatched to the site to repair the elevator system. It is possible to detect whether the elevator system has stopped working based on data collected from the elevator system. However, it may be difficult to accurately detect whether the elevator system has stopped working, such as whether the elevator car has truly stopped.

[0003] Typically, the condition of an elevator system can be monitored by directly monitoring the fault status and / or operating status of the elevator system from the elevator controller, such as by reading fault codes. At least one drawback of doing so is that, for example, in the case of an old elevator system and / or for parties other than the manufacturer of the elevator system, access for monitoring the fault / operating status may not be available. In addition, in all possible fault cases, it is not possible to infer the availability of the elevator from the fault codes with a sufficiently high coverage rate and accuracy.

[0004] Another typical way to monitor the condition of an elevator system may be to monitor one or more outputs of the elevator system with a retrofit monitoring unit with one or more additional sensors, such as the movement of the elevator car, the movement of one or more doors of the elevator system, the open / closed state of one or more doors of the elevator system, vibration, safety circuit status, the stop behavior of the elevator car, the position of the elevator car in the elevator shaft, and / or noise, etc. However, when data is collected by adding a monitoring unit to the elevator system, the accuracy of detection may be lower than when data is directly obtained from the elevator controller.

[0005] Therefore, a major drawback of the monitoring method with an added monitoring unit having additional sensors is inaccuracy, because it may be challenging to infer with high accuracy whether the elevator system is not working, which may lead to false positive alarms (which may result in repair costs without any problems) and / or false negative alarms, i.e., an actual fault event may be missed because everything seems normal, but the elevator is malfunctioning. Additionally, at least one drawback of monitoring the output of the elevator system is that it only allows the condition of the elevator system to be detected when the elevator car is moving, and the inoperative condition cannot be distinguished from the normal operation of the elevator system when the elevator car is stopped at a landing, because from the perspective of the monitoring unit, the condition of the elevator system may appear normal, but the elevator system may still be inoperative. Even three-quarters of the inoperative conditions may cause the elevator car to stop at a landing.

[0006] Alternatively, the condition of the elevator system can be monitored by generating a remote elevator call to one or more elevator cars when an unconventional low usage period is recognized and by monitoring the response of the elevator cars to the remote elevator call. If no movement of the elevator car in response to the remote elevator call is detected, it indicates that the elevator system may not be working. However, this results in unnecessary power consumption of the elevator system, the movement of the elevator in response to the remote elevator call may irritate passengers, and since the elevator car may move unexpectedly, this may also cause safety issues. Moreover, the possibility of generating random remote elevator calls may cause information security problems, such as malicious hackers may be able to generate a large amount of usage on the elevator system.

[0007] Therefore, there is a need to develop further solutions to at least partially improve the reliability of monitoring the state of the elevator system. SUMMARY OF THE INVENTION

[0008] The following presents a simplified overview in order to provide a basic understanding of certain aspects of various embodiments of the present invention. This overview is not an extensive overview of the present invention. It is neither intended to identify key or important elements of the present invention nor to depict the scope of the present invention. The following overview only presents some concepts of the present invention in a simplified form as a prelude to a more detailed description of the exemplary embodiments of the present invention.

[0009] An object of the present invention is to provide a system and method for detecting an inoperative state of an elevator system. Another object of the present invention is that the system and method for detecting an inoperative state of an elevator system at least partially improve the reliability of monitoring the condition of the elevator system.

[0010] The object of the present invention is achieved by the system and method defined by the respective independent claims.

[0011] According to a first aspect, a system for detecting a non-operating state of an elevator system is provided, wherein the system comprises: a signaling sensor unit configured to obtain signaling traffic data of at least one control system bus of the elevator system; at least one actuation sensor device configured to obtain actuation output data of at least one actuator entity of the elevator system after the obtained signaling traffic data; and a monitoring unit configured to: generate reference actuation output data by applying a machine learning module after the obtained signaling traffic data, and generate a signal indicating a non-operating state of the elevator system to an external computing entity in response to detecting a deviation between the obtained output data and the generated reference output data.

[0012] At least one actuator entity of the elevator system may include an elevator car, elevator doors, a hoisting system, a door controller, and / or an elevator car lighting system.

[0013] The signaling sensor unit may include one or more serial detection devices for obtaining signaling traffic data from a serial communication bus type control system bus.

[0014] Alternatively or additionally, the signaling sensor unit may include parallel detection devices for obtaining the signaling traffic data from a parallel communication type control system bus.

[0015] The signaling sensor unit may be configured to: wake up from a sleep mode in response to obtaining the signaling traffic data, provide the obtained signaling traffic data to the monitoring unit, and then return to the sleep mode.

[0016] The monitoring unit may also be configured to provide a remote command request to the signaling sensor unit to generate at least one remote command for controlling at least one actuation output of at least one actuator entity of the elevator system.

[0017] The machine learning module of the monitoring unit may be configured to receive the obtained signaling traffic data as its input data and generate the reference actuation output data as the output data of the machine learning module by applying one or more machine learning techniques.

[0018] The historical output data of at least one actuator entity of the elevator system collected by the at least one actuation sensor device, and the historical traffic data of at least one elevator control system bus collected by the signaling sensor unit may be used as training data to train the machine learning module.

[0019] According to a second aspect, a method for detecting a non-operational state of an elevator system is provided, wherein the method includes: obtaining signalized traffic data of at least one control system bus of the elevator system by a signalized sensor unit; obtaining actuation output data of at least one actuator entity of the elevator system by at least one actuation sensor device after obtaining the signalized traffic data; generating reference actuation output data by a monitoring unit by applying a machine learning module after obtaining the signalized traffic data; and generating a signal indicating the non-operational state of the elevator system to an external computing entity by the monitoring unit in response to detecting a deviation between the obtained actuation output data and the generated reference actuation output data.

[0020] At least one actuator of the elevator system may include an elevator car, elevator doors, a hoisting system, a door controller, and / or an elevator car lighting system.

[0021] The method may further include: waking up the signalized sensor unit from a sleep mode in response to obtaining the signalized traffic data, providing the obtained signalized traffic data to the monitoring unit, and then returning to the sleep mode.

[0022] Alternatively or additionally, the method may further include: providing a remote command request to the signalized sensor unit by the monitoring unit to generate at least one remote command for controlling at least one actuation output of at least one actuator entity of the elevator system.

[0023] Generating the reference actuation output data may include: receiving the obtained signalized traffic data as input data of the machine learning module; and generating the reference actuation output data as output data of the machine learning module by applying one or more machine learning techniques.

[0024] Alternatively or additionally, the method may include: collecting historical output data of at least one actuator entity of the elevator system by the at least one actuation sensor device, collecting historical traffic data of at least one elevator control system bus by the signalized sensor unit, and using the collected historical output data and historical traffic data as training data to train the machine learning module.

[0025] The various configurations and operating methods of the present invention and its various exemplary and non-limiting embodiments of additional objects and advantages will be best understood when reading the following description of specific exemplary and non-limiting embodiments in conjunction with the accompanying drawings.

[0026] The verbs "comprise" and "include" are used in this document as open limitations, neither excluding nor requiring the presence of features not recited. Unless otherwise expressly stated, the features recited in the dependent claims may be freely combined with one another. In addition, it should be understood that the use of "a" or "an" throughout the document, i.e., the singular form, does not exclude a plurality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In the drawings, embodiments of the invention are shown by way of example and not limitation.

[0028] Figure 1A and 1B A simple example of a system according to the invention is schematically shown.

[0029] Figure 2 An example elevator environment in which embodiments of the invention may be implemented is schematically shown.

[0030] Figures 3A - 3C An example of a connection between a signaling sensor unit and at least one control system bus of an elevator system is schematically shown.

[0031] Figure 4 An example of a method according to the invention is schematically shown.

[0032] Figure 5 Another example of a method according to the invention is schematically shown.

[0033] Figure 6 An example of components of a monitoring unit according to the invention is schematically shown. DETAILED DESCRIPTION

[0034] Figure 1A A simple example of a system 100 according to the invention for detecting an inoperative state of an elevator system is schematically shown. The term "inoperative state of an elevator system", i.e., a non-service state of an elevator system, refers throughout this application to any condition of an elevator system in which the elevator system cannot serve its purpose, e.g., an elevator car cannot serve an elevator call generated for that elevator car, elevator doors cannot open / close, etc. The inoperative state may be caused, for example, by a technical fault, vandalism, etc. System 100 includes a monitoring unit 102, at least one actuation sensor device 104 for obtaining output actuation data of at least one actuator entity of elevator system 200, and a signaling sensor unit 106 for obtaining signaling traffic data of at least one control system bus of elevator system 200.

[0035] At least one actuator entity of the elevator system 200 may include an elevator car 202, elevator doors, such as landing doors 216a - 216n or elevator car doors 212, a hoist system 204, a door control unit, and / or an elevator car lighting system. At least one actuation sensor device 104 may be an internal sensor device of the monitoring unit 102. Alternatively, at least one actuation sensor device 104 may be an external sensor device communicatively coupled to the monitoring unit 102 via wireless or wired technology. If the system 100 includes more than one actuation sensor device 104, some actuation sensor devices 104' may be internal sensor devices while some actuation sensor devices 104 may be external sensor devices. Figure 1B Another simple example of the system 100 according to the present invention is shown, where the system includes an internal actuator sensor device 104' and an external actuator sensor device 104. According to one example, the actuation sensor device for obtaining output actuation data of elevator doors such as landing doors 216a - 216n or elevator car doors 212 may preferably be an external sensor device. According to another example, the actuation sensor device for obtaining output actuation data of the elevator car 202 may be an internal sensor device of the monitoring unit 102, which may be arranged in the elevator car 200.

[0036] The system 100 may further include an external computing entity 108. The external computing entity 108 may be one of the following: a cloud server, a service center, a data center. The external entity here refers to an entity placed separately from the elevator system. The implementation of the external computing entity 108 may be accomplished as an independent entity or as a distributed computing environment among multiple independent devices (e.g., multiple servers providing distributed computing resources). The monitoring unit 102 and the external computing entity 108 are communicatively coupled to each other. The communication between the monitoring unit 102 and the external computing unit 108 may be based on one or more known wired or wireless communication technologies.

[0037] Figure 2 An example elevator environment is schematically shown, in which embodiments of the present invention may be implemented as will be described. Figure 2 The example elevator environment shown is an elevator system 200, which may include an elevator control system 210, an elevator car 202, and a hoist system 204 configured to drive the elevator car 202 between landings 208a - 208n along an elevator shaft 206. The elevator control system 210 may be configured to control the operation of the elevator system 200. In Figure 2 In, the elevator control system 210 is located in the machine room 211, but the elevator control system 210 may also be located in one of the landings 208a - 208n. The elevator car 202 may include an elevator car door 212 and a door control unit, such as a door operator (not shown for clarity inFigure 2 as shown

[0038] In addition, each landing 208a - 208n may include landing doors 216a - 216n. The elevator system 200 may further include a car operation panel 218 disposed inside the elevator car 202 and landing call panels 220a - 220n disposed at each landing 208a - 208n. The car operation panel 218 may include one or more elevator buttons 302 for controlling at least one operation of the elevator system 200, such as moving the elevator car 202 to a desired landing, opening or closing the elevator doors (landing doors 216a - 216n and / or elevator car door 212), generating an elevator alarm, making an emergency call, etc. The landing call panels 220a - 220n may include one or more elevator buttons 302 for controlling the operation of the elevator system, such as calling the elevator car 202 to a desired landing, i.e., the landing 208a - 208n in which the landing call panel 220a - 220n is resident. In Figure 2 the example elevator environment 200, the signaling sensor unit 106 is disposed inside the machine room 211. However, the physical location of the signaling sensor unit 106 in the elevator system 200 is not limited, and the signaling sensor unit 106 may also be located at any other location within the elevator system 200. In Figure 2 the example elevator environment 200, the monitoring unit 102 is disposed inside the elevator car 202 traveling between landings 206 in the elevator hoistway 204. However, the physical location of the monitoring unit 102 in the elevator system 200 is not limited, and the monitoring unit 102 may also be located at any other location within the elevator system 200. In Figure 2 the example elevator environment 200, at least one actuation sensor device 104 includes at least one external actuation sensor device 104 and at least one internal actuation sensor device 104'.

[0039] Preferably, the signaling sensor unit 106 may be configured to obtain signaling traffic data of the landing signal bus and / or the car signal bus. The landing signal bus is arranged between the landing call devices 220a - 220n and the elevator control system 210. The car signal bus is arranged between the car operation panel 218 and the elevator control system 210. The signaling traffic data of the landing signal bus represents one or more signal commands, such as landing calls or destination calls, generated in response to user interaction via the landing call devices 220a - 220n, for example, by pressing or touching one or more elevator buttons 302 of the landing call devices 220a - 220n. A landing call may include information about the direction in which the elevator car is desired to travel, i.e., up or down. A destination call may include information about the desired landing at which the elevator car is desired to travel. The signaling traffic data of the car signal bus represents one or more signal commands, such as car calls, generated in response to user interaction via the car operation panel 218, for example, by pressing or touching one or more user interface buttons of the car operation panel 218. A car call may include information about the landing at which the elevator car is desired to travel.

[0040] Alternatively or additionally, the signaling sensor unit 106 may be configured to obtain signaling traffic data of the control bus in the car cable, the control bus between the elevator control system 210 and the hoisting motion control system (e.g., the drive unit), the control bus between the elevator control system 210 and the door control unit, the control bus between the elevator control system 210 and the elevator group control system, and / or the debug port of the processing unit of the elevator control system 210, wherein the signaling traffic data includes one or more signal commands generated by the relevant signal system / control unit. For example, the signaling traffic data may include a signal command from the elevator control unit 210 to the hoisting motion control system to drive the elevator car 202 from one landing to one or more other landings. According to another example, the signaling traffic data may include a signal command from the elevator control unit 210 to the door control unit to open the elevator door.

[0041] One or more signal commands of the signaling traffic data may be individual signal commands. Alternatively, if the signaling traffic data includes more than one signal command, the more than one signal commands may form a sequence or pattern of signal commands.

[0042] The signaling sensor unit 106 is configured to obtain signaling traffic data of at least one control system bus of the elevator system 200, and at least one actuation sensor device 104, 104' is configured to obtain output actuation data of at least one actuator entity of the elevator system 200 after the obtained signaling traffic data. The signaling sensor unit 106 is configured to provide the obtained signaling traffic data to the monitoring unit 102, and at least one actuation sensor device 104, 104' is configured to provide the obtained output actuation data to the monitoring unit 102.

[0043] The actuation output data of the elevator car 202 as an actuator entity may be the movement or non-movement of the elevator car 202. The movement direction of the elevator car 202 may be upward or downward. The actuation output data of the elevator doors (such as landing doors 216a - 216n or elevator car door 212) as actuator entities may be the movement or non-movement of the elevator doors. The movement of the elevator doors may be opening or closing. The actuation output data of the hoisting system 204 as an actuator entity may be hoisting movement or non-hoisting movement. The actuation output data of the door control unit as an actuator entity may be the movement or non-movement of the elevator doors. The actuation output data of the elevator car lighting system as an actuator entity may be lighting on or off.

[0044] If the signaling traffic data includes more than one signaling command forming a sequence or pattern of signaling commands, after the signaling traffic data forming the sequence or pattern of signaling commands, the actuation output data may include one or more individual output functions or more than one output function forming a sequence or pattern of output functions.

[0045] At least one actuation sensor device 104, 104' may include, for example, an accelerometer, a magnetometer, a gyroscope, an inclinometer, a pressure sensor, a temperature sensor, a microphone, a current sensor, etc., for detecting at least one actuation output of the elevator system 200 and / or for providing actuation output data of the elevator system 200. For example, one or more accelerometers may be used to obtain data such as acceleration, position, speed, etc., to indicate the movement of the elevator car 202 and / or the elevator doors, such as landing doors 216a - 216n or car door 212.

[0046] The monitoring unit 102 is configured to receive the obtained actuation output data from at least one actuation sensor device 104, 104' and receive the signalized traffic data from the signalized sensor unit 106. In addition, the monitoring unit 102 is configured to generate reference output data by applying a machine learning module, namely the machine learning model 630, after the obtained traffic data. The machine learning module 630 receives the obtained signalized traffic data as its input data and generates reference actuation output data as the output data of the machine learning module 630 by applying one or more machine learning techniques. For example, one or more of the following known machine learning techniques can be applied: decision tree, support vector machine, neural network, or any suitable data-driven method. The monitoring unit 102 is capable of inferring from the input data (i.e., the obtained signalized traffic data) using the machine learning module 630 the typical reference output data of the machine learning model, i.e., what the actuation output data expected for the obtained input signalized traffic data is. In other words, the machine learning module 603 processes the input data, i.e., the obtained signalized traffic data, and provides the output data, i.e., the reference actuation output data. When the elevator system 200 operates as expected, each of one or more signal commands of the signalized traffic data is typically followed by actuation output data including specific one or more actuation output functions. For example, if the obtained input data, i.e., the signalized traffic data, indicates that an elevator call to one of the landings 208a - 208n has been generated, e.g., a passenger has pressed the elevator button 302a - 302n of the landing call device 220a - 220n at one of the landings 208a - 208n, the monitoring unit 102 can infer from the reference actuation output data of the machine learning module 630 that the elevator car 202 is expected to move to the landing 208a - 208n where the elevator call was generated. According to another example, if the obtained input data, i.e., the signalized traffic data, indicates that the elevator door is opened, e.g., the elevator control system 210 generates a door open command to the door control unit, the monitoring unit 102 can infer from the reference actuation output data of the machine learning module 630 that the elevator door is expected to open.

[0047] The machine learning module 630 can be trained by using the historical actuation output data of at least one actuator entity of the elevator system 200 and the historical signaling traffic data of at least one elevator control system bus as training data. The historical actuation output data of at least one actuator entity of the elevator system 200 can be collected by using at least one actuation sensor device 104, 104' over a long period during the operation of the elevator system 200. The historical signal communication volume data of at least one elevator control system bus can be collected by using the signaling sensor unit 106 over a long period during the operation of the elevator system 200. When the machine learning module 630 is properly trained, the accuracy of the generated reference actuation output data can be improved. To improve the training of the machine learning module 630, it is preferably to use general training data. For example, the training data includes the historical actuation output data of at least one actuator entity of the elevator system 200 and the historical signaling traffic data of at least one elevator control system bus from multiple different operating conditions of the elevator system 200. The accuracy of the generated reference actuation output data can also depend on the initial training data used to train the machine learning module 630.

[0048] If the elevator system 200 does not operate as expected, that is, the elevator system 200 is in a non-operating state due to some reason, the obtained actuation data deviates from, that is, is different from, the generated reference actuation output data. In other words, if the actual actuation output data obtained after the obtained signaling traffic data deviates from the reference actuation output data generated after the same obtained signaling traffic data, it indicates that the elevator system 200 is in a non-operating state. The monitoring unit 102 is configured to generate at least one signal indicating the non-operating state of the elevator system 200 to the external computing entity 108 in response to detecting a deviation between the obtained actuation output data and the generated reference actuation output data.

[0049] For example, if the obtained signaling traffic data indicates the generation of an elevator call to one of the landing stations 208a - 208n, for example, the monitoring unit 102 infers from the reference actuation output data of the machine learning module 630 that the elevator car 202 is expected to move to the landing station 208a - 208n where the elevator call is generated, and if the elevator car 202 does not move according to the actuation output data obtained from at least one actuation sensor device 104, 104', the monitoring unit 102 detects a deviation between the obtained actuation output data and the reference actuation output data and generates a signal indicating the non-operating state of the elevator system 200 to the external computing entity 108.

[0050] In response to receiving at least one signal indicating a non-operational state of elevator system 200, external computing entity 108 may be configured to generate an indication that elevator system 200 is non-operational to indicate to maintenance personnel for example for repair, i.e., to fix elevator system 200. This enables the repair of elevator system 200 to be expedited to improve the availability of elevator system 200, i.e., the time during which elevator system 200 is operating. According to one example, the non-operational indication may be provided directly from external computing entity 108 to a mobile terminal of the maintenance personnel, such as a mobile phone or a tablet computer.

[0051] Power for signaling sensor unit 106 may be provided from the mains via a plug or the like, but preferably, signaling sensor unit 106 may be powered by one or more batteries or capacitors to avoid cumbersome power supply from the mains and / or to enable the retrofit of signaling sensor unit 106 into an existing elevator system. However, this may limit the power available to the components of signaling sensor unit 106. Thus, to reduce the power consumption of signaling sensor unit 106, signaling sensor unit 106 may be configured to be mainly in a sleep mode. In the sleep mode, signaling sensor unit 106 may be arranged in a low-power mode or may be turned off. In the low-power mode, signaling sensor unit 106 may consume about a few microamperes or even less. Signaling sensor unit 106 may be configured to wake up from the sleep mode in response to detecting signaling traffic data and provide the obtained signaling traffic data to monitoring unit 102. This means that signaling sensor unit 106 is mainly in the sleep mode and waits for an interrupt signal indicating the detection of signaling traffic data. After providing the obtained signaling traffic data to monitoring unit 102, signaling sensor unit 106 may be configured to return to the sleep mode.

[0052] At least one control system bus of the elevator system 200 that can be monitored by the signaling sensor unit 106 can be of a serial communication bus type and / or a parallel communication type. In order to be able to monitor traffic data of one or more control system buses of the serial communication bus type, the signaling sensor unit 106 includes one or more serial detection devices 312a - 312n for obtaining signaling traffic data from the serial communication type control system bus. In order to be able to monitor traffic data of one or more control system buses of the parallel communication bus type, the signaling sensor unit 106 includes parallel detection means 304 for obtaining signaling traffic data from the parallel communication type control system bus. In order to be able to monitor traffic data of both types of control system buses with one signaling sensor unit 106, the signaling sensor unit 106 includes one or more serial detection devices 312a - 312n for obtaining signaling traffic data from the serial communication type control system bus, and parallel detection means 304 for obtaining signaling traffic data from the parallel communication type control system bus.

[0053] Figures 3A to 3C Examples of different connections between the signaling sensor unit 106 and at least one control system bus of the elevator system 200 are schematically shown for obtaining signaling traffic data from the serial communication type control system bus and / or the parallel communication type control system bus. Figures 3A - 3C Examples of components of the signaling sensor unit 106 according to the present invention are also schematically shown. In Figures 3A - 3C the example, at least one control system bus is a landing signal bus and / or a car signal bus. However, Figures 3A - 3C the example connections shown in Figures 3A - 3C the example can also be implemented between the signaling sensor unit 106 and any other at least one control system bus of the elevator system 200.

[0054] Figure 3A An example of the signaling sensor unit 106 according to the present invention connected to a parallel communication type control system bus is schematically shown. In Figure 3A the example, the control system bus is a landing signal bus, which includes individual signal lines 301a - 301n from the elevator control system 210 to each elevator button 302a - 302n of each landing call device 220a - 220n. In Figure 3AIn the example, the landing call device 220a at the bottom landing 208a includes an elevator button 302a, the landing call device 220n at the topmost landing 208n includes an elevator button 302n, and the landing call device 220b at the second landing 208b includes two elevator buttons 302b, 302c. The elevator buttons 302a - 302n can be implemented, for example, as switches as shown in Figures 3A - 3C The parallel detection device 304 of the signaling sensor unit 106 can be connected, i.e., coupled to one or more signaling lines 301a - 301n, to obtain signaling traffic data transmitted via one of the one or more signal lines 301a - 301n. In Figure 3A the example, the parallel detection device 304 is connected to the nth signal line 301n, which transmits traffic data between the elevator control unit 210 and the elevator button 302n of the landing call device 220n at the topmost landing 208n, and is connected to the third signal line 301c, which transmits traffic data between the elevator control unit 210 and the elevator button 302c of the landing call device 220b at the second landing 208n. Alternatively or additionally, compared to what is shown in the example of Figure 3A , the parallel detection device 304 can be connected to one or more other signal lines 301a - 301n, which transfer traffic data between the elevator control unit 210 and the elevator buttons 302a - 302n of the landing call devices 220a - 220n. The parallel detection device 304 of the signaling sensor unit 106 can be connected to one or more signal lines 301a - 301n, for example, by means of a wire connector or any other similar means.

[0055] The parallel detection device 304 can include a voltage isolator configured to obtain signaling traffic data by detecting a voltage change at the terminals of the switches of the elevator buttons 302a - 302n. In other words, the signaling traffic data can be detected as a change in the voltage at the terminals of the switches of the elevator buttons 302a - 302n. For example, in Figure 3AIn the example, when an elevator call has been generated, for example, via the elevator button 302n of the landing call device 220n at the topmost landing 208n, the voltage isolator of the nth signal line 301n of the elevator button 302n connected to the landing call device 220n at the topmost landing 208n detects a change in the voltage at the terminals of the switch of the elevator button 302n. In response to detecting the signalized traffic data, the voltage isolator generates an interrupt signal indicating the detected signalized traffic data to the microcontroller 316 of the signalized sensor unit 106. In response to the interrupt signal, the microcontroller wakes up and provides the obtained signalized traffic data to the monitoring unit 102. After providing the obtained signalized traffic data to the monitoring unit 102, the microcontroller instructs the signalized sensor unit 106 to return to the sleep mode.

[0056] The signalized sensor unit 106 may also include one or more serial detection devices 312a - 312n for obtaining signalized traffic data from a serial communication type control system bus. In Figure 3A the example, one or more serial detection devices 312a - 312n are not used and thus are not connected to any control system bus. One or more serial detection devices 312a - 312n may be one or more data recorder devices for obtaining signals from a serial communication control system bus based on different communication protocols. For example, the signalized sensor unit 106 may include one data recorder device 312a for a control system bus based on the Local Operating Network (LON) protocol, one data recorder device 312b for a control system bus based on the Controller Area Network (CAN) protocol, and / or one or more data recorder devices 312n for a control system bus based on any other protocol.

[0057] The signalized sensor unit 106 further includes a processing unit 316, which includes one or more processors for processing information and controlling the operation of the signalized sensor unit 106 and other tasks. Preferably, the processing unit 316 may be implemented as a microcontroller (MCU) with embedded software.

[0058] The signaling sensor unit 106 further includes a communication unit 318 that provides an interface for communicating with any external unit (e.g., the monitoring unit 102 and / or any external system). The communication unit 318 may include one or more communication devices, such as a radio transceiver, an antenna, etc. The communication unit 318 may be based on one or more known communication technologies to exchange information as described above. The communication unit 318 may preferably be based on one or more medium-range radio frequency technologies, such as sub-gigahertz frequency technologies, to enable long-distance communication with the monitoring unit 102 through concrete walls and / or floors. The sub-gigahertz frequency technology may be LoRa (Long Range) or any other sub-gigahertz frequency technology.

[0059] The signaling sensor unit 106 may further include a power supply unit 320. The power supply unit 320 may include a power source, such as one or more batteries or capacitors, for powering the components of the signaling sensor unit 106. Additionally, the power supply unit 320 may further include a power collector, such as one or more solar cells, for powering the components of the signaling sensor unit 106.

[0060] The signaling sensor unit 106 may optionally further include a remote command unit 310 that generates elevator commands for the elevator system 200 in response to receiving a remote command request from the monitoring unit 102, which will be described later in this application. The remote command unit 310 may include one or more switching devices 306a - 306n, such as relays, solid-state switches, microswitches, membrane switches, etc. Each of the one or more switching devices 306a - 306n of the remote command unit 310 may be connected to one of the one or more signal lines 301a - 301n. For example, in Figure 3A the example, the first switching device 306a is connected to the nth signal line 301n, which transmits traffic data between the elevator control unit 210 and the elevator button 302 of the landing call device 220n at the topmost landing 208n, and the nth switching device 306n is connected to the third signal line 301c, which transmits traffic data between the elevator control unit 210 and the elevator button 302c of the landing call device 220b at the second landing 208n. With Figure 3ACompared with the example shown, the remote command unit 310 of the signaling sensor unit 106 may also include only one switching device 306a - 306n or one or more additional switching devices 306a - 306n to connect to one or more other signal lines 301a - 301n. One or more switching devices 306a - 306n of the remote command unit 310 of the signaling sensor unit 106 may be connected to one or more signaling lines 301a - 301n respectively, for example, by wire joints or any other similar means. The remote command unit 310 may further include a switch control unit 308, such as a relay coil drive circuit, which is configured to control the operation of one or more switching devices 306a - 306n.

[0061] Figure 3B An example of a signaling sensor unit 106 connected to a serial communication type control system bus according to the present invention is schematically shown. Figure 3B The exemplary signaling sensor unit 106 of Figure 3A is similar to the exemplary signaling sensor unit, except that instead of connecting the parallel detection device 304 to one or more signal lines 301a - 301n, one or more serial detection devices 312a - 312n are connected to the serial communication type control system bus, which is the landing signal bus in Figure 3B the example. In Figure 3B the example, the parallel detection device 304 and the remote command unit 310 are not used and thus not connected to any control system bus. The serial communication type control system bus includes serial control units 322a - 322n for each landing call device 220a - 220n connected in series with each other. Each serial control unit 322a - 322n includes a processing unit, such as a microcontroller and a serial transceiver.

[0062] One or more serial detection devices 312a - 312n, i.e., one or more data recorder devices, are configured to obtain traffic data signaled on at least one serial communication type control system bus. One or more data recorder devices 312a - 312n may be connected to at least one serial communication type control system bus to monitor (i.e., listen to) the traffic data signaled such that one or more data recorder devices 312a - 312n do not interfere with at least one serial communication type control system bus. One or more data recorder devices 312a - 312n may continuously obtain traffic data signaled. Alternatively, in response to detecting traffic data signaled, one or more data recorder devices 312a - 312n generate an interrupt signal indicating the detected traffic data signaled to the microcontroller 316 of the traffic sensor unit 106. In response to the interrupt signal, the microcontroller 316 wakes up and provides the obtained traffic data signaled to the monitoring unit 102. The traffic sensor unit 106 may provide all the obtained traffic data signaled to the monitoring unit 102, or the microcontroller 316 may process the obtained traffic data signaled so as to provide only a portion of the traffic data signaled to the monitoring unit 102. The processing may include, for example, selection, conversion, etc. Providing all the obtained traffic data signaled to the monitoring unit 102 increases the amount of radio transmission (i.e., communication) from the traffic sensor unit 106 to the monitoring unit 102, which in turn increases the power consumption. Therefore, providing only a portion of the obtained traffic data signaled reduces the radio transmission, i.e., communication, from the traffic sensor unit 106 to the monitoring unit 102, thereby reducing the power consumption of the traffic sensor unit 106.

[0063] For example, in Figure 3B the example, when an elevator call has been generated, for example, via the elevator button 302n of the landing call device 220n at the topmost landing 208n, the data recorder device 312a obtains traffic data signaled. The traffic sensor unit 106 may provide the obtained traffic data signaled to the monitoring unit 102. Alternatively, in response to obtaining traffic data signaled, the data recorder device 312a generates an interrupt signal indicating the detected traffic data signaled to the microcontroller 316 of the traffic sensor unit 106, and the microcontroller 316 wakes up in response to the interrupt signal and provides the obtained traffic data signaled to the monitoring unit 102. After providing the obtained traffic data signaled to the monitoring unit 102, the microcontroller instructs the traffic sensor unit 106 to return to the sleep mode.

[0064] Figure 3C An example of a traffic sensor unit 106 connected to one serial communication type control system bus and one parallel communication type control system bus is schematically shown. In Figure 3CIn the example, one or more serial detection devices 312a - 312n (e.g., the first serial detection device 312a in this example) are connected to a serial communication type control system bus, which is a landing signal bus, in order to obtain the signalized traffic data of the landing signal bus, that is, the signalized traffic data transmitted between the elevator control system 210 and one or more elevator buttons 302a - 302n of one or more landing call devices 220a - 220n. Additionally, in Figure 3C the example, the parallel detection device 304 of the signalized sensor unit 106 is connected to one or more signal lines 301a - 301n in order to obtain the signalized traffic data of the car signal bus, that is, the signalized traffic data transmitted between the elevator control system and one or more elevator buttons 302d, 302e of the car operation panel 218. In Figure 3C the example, the signalized traffic data can be obtained as discussed above with reference to Figure 3A and 3B However, Figure 3C the signalized sensor unit 106 of

[0065] can monitor and obtain the traffic data of both the serial communication type control system bus and the parallel communication type control system with a single signalized sensor unit 106.

[0066] The monitoring unit 102 may be configured to provide a remote command request to the signaling sensor unit 106 in response to receiving an instruction from an external computing entity 108. The external computing entity 108 may be configured to instruct the monitoring unit 102 to provide a remote command request to the signaling sensor unit 106 in response to receiving at least one signal indicating a non-operational state of the elevator system 200 from the monitoring unit 102. Alternatively or additionally, the monitoring unit 102 may be configured to provide a remote command request to the signaling sensor unit 106 according to a predetermined time schedule (i.e., a time table). The predetermined time schedule may include regular intervals, such as once a year, once a month, once a week, etc., or irregular time intervals. This enables predetermined remote monitoring of the elevator system. Preferably, the monitoring unit 102 may be configured to provide a remote command request to the signaling sensor unit 106 when an unconventional low usage period of the elevator system 200 is identified.

[0067] The generated remote command may be a remote elevator command, for example, a landing call, a destination call, or a car call. If the generated remote elevator command is a landing call, a destination call, or a car call, the actuation output of at least one actuator entity of the elevator system 200 may be the movement of the elevator car 202. In other words, the signaling sensor unit 106 generates a landing call, a destination call, or a car call in response to receiving one or more control signals from the monitoring unit 102 to move the elevator car 202 according to the generated landing call, destination call, or car call. Alternatively or additionally, the generated remote command may be a remote elevator command, such as one of the following: an emergency call, an elevator alarm, an open or close command for elevator doors (e.g., landing doors 216a - 216n and / or elevator car door 212); the corresponding actuation output of the actuator entity of the elevator system 200 is at least one of the following: making an emergency call, generating an elevator alarm, opening or closing the elevator doors.

[0068] The signaling sensor unit 106 can be electrically connected via one or more signal lines 301a - 301n to bridge the switches of one or more elevator buttons 302a - 302n. The verb "bridge" means establishing an electrical connection between the terminals of the switches of the elevator buttons 302a - 302n to mimic the activation of the elevator buttons 302a - 302n, such as a push. One or more switching devices 306a - 306n of the remote command unit 310 of the signaling sensor unit 106 can be configured to provide bridging of the switches of one or more elevator buttons 302a - 302n. In other words, one or more switching devices 306a - 306n of the remote command unit 310 of the signaling sensor unit 106 can establish an electrical connection between the terminals of the switches of one or more elevator buttons 302a - 302n, thereby causing the switches of one or more elevator buttons 302a - 302n to be short - circuited to generate a command corresponding to the command generated in response to the activation of the elevator buttons 302a - 302n. The control signal received from the monitoring device 102 can be a simple on / off signal to change the state of one or more switching devices 306a - 306n from an open state to a closed state, or vice versa. For example, in response to receiving a signal from the monitoring device 102, one or more switching devices 306a - 306n can change their state to a closed state, where one or more switching devices 306a - 306n can establish an electrical connection between the terminals of the switches of one or more elevator buttons 302a - 302n. Alternatively, in response to receiving an open signal from the monitoring device 102, one or more switching devices 306a - 306n can change their state to an open state, where one or more switching devices 306a - 306n do not establish an electrical connection between the terminals of the switches of one or more elevator buttons 302a - 302n.

[0069] The signaling sensor unit 106 can be configured to wake up from the sleep mode at regular or irregular intervals to check for any pending remote command requests from the monitoring unit 102. If at least one pending remote command request is detected, the signaling sensor unit 106 can be configured to generate a remote command for controlling at least one actuating entity of the elevator system 200 based on the detected at least one remote command. Additionally, the signaling sensor unit 106 can be configured to return to the sleep mode after generating the remote command.

[0070] The monitoring unit 102 may further be configured to monitor the actuation output of at least one actuation device of the elevator system 102 to define whether the elevator system 200 responds to a remote command in a desired manner, for example by comparing the monitored response with a reference response. The response in the desired manner and / or the reference response may depend on the generated remote command. For example, if the generated remote command is a remote elevator command, such as a landing call or an elevator car call, the reference response with which the monitoring unit 102 may compare the monitored response is the movement of the elevator car 202. When the monitoring unit 102 detects, by means of at least one actuation sensor 104, 104', that the elevator car 202 is moving, it may be defined that the elevator car responds to the generated remote elevator command request in a desired manner. In the case where the monitoring unit 120 detects, by means of at least one actuation sensor 104, 104', that the elevator car 202 is not moving, it is defined that the elevator system 200 does not respond to the remote elevator command in a desired manner. In response to the definition that the elevator system 200 does not respond to the remote command in a desired manner, the monitoring unit 102 may further be configured to generate at least one second signal indicating that the elevator system is in a non-operating state to an external computing entity 108. The ability of the system 100 to generate remote elevator commands enables the detection of the non-operating state of the elevator system 200 to be verified based on the signaling traffic data and the above-mentioned actuation output data.

[0071] Above, the present invention has been described with respect to the system 100 of the present invention. Next, an example of a method for detecting a non-operating state of an elevator system according to the present invention will be described with reference to Figure 4 an example of a method for detecting a non-operating state of an elevator system according to the present invention will be described. Figure 4A flowchart of the present invention is schematically shown. At step 410, a signalized sensor unit 106 obtains signalized traffic data of at least one control system bus of an elevator system 200, and provides the obtained signalized traffic data to a monitoring unit 102. At least one control system bus of the elevator system 200 can be a serial communication bus type and / or a parallel communication type as described above. At step 420, at least one actuation sensor device 104, 104' obtains actuation output data of at least one actuator entity of the elevator system 200 after the obtained signalized traffic data. At least one actuator entity of the elevator system 200 can include an elevator car 202, elevator doors, such as landing doors 216a - 216n or an elevator car door 212, a hoisting system 204, a door control unit, and / or an elevator car lighting system, as described above. At step 430, the monitoring unit 102 generates reference actuation output data by applying a machine learning module after the obtained signalized traffic data, as described above. At step 450, in response to detecting a deviation between the obtained actuation output data and the generated reference actuation output data at step 440, the monitoring unit 102 generates at least one signal indicating a non-operating state of the elevator system 200 to an external computing entity 108.

[0072] Figure 5 Another example of a method according to the present invention is schematically shown. At step 510, in response to the signalized sensor unit 106 obtaining signalized traffic data by a parallel detection device 304 or one or more serial detection devices 312a - 312n at step 410, the signalized sensor unit 106 wakes up from a sleep mode. At step 520, the signalized sensor unit 106 provides the obtained signalized traffic data to the monitoring unit 102, and the signalized sensor unit 106 returns to the sleep mode. After providing the obtained signalized traffic data to the monitoring unit 102, the method continues from step 420 described above. Figure 4 continues with the steps described above.

[0073] The method according to the present invention may further include: providing a remote command request to the signalized sensor unit 106 by the monitoring unit to generate a remote command for controlling at least one actuation output of at least one actuator entity of the elevator system, as described above. The monitoring unit 102 can further monitor the actuation output of at least one actuation device of the elevator system 102 to define whether the elevator system 200 responds to the remote command in a desired manner, for example, by comparing the monitored response with a reference response, as described above. In response to defining that the elevator system 200 does not respond to the remote command in a desired manner, the monitoring unit 102 can further generate at least one second signal indicating a non-operating state of the elevator system to the external computing entity 108.

[0074] Figure 6An example of the components of the monitoring unit 102 according to the present invention is schematically shown. The monitoring unit 102 may include: a processing unit 610, which includes one or more processors; a memory unit 620, which includes one or more memories; a communication unit 640, which includes one or more communication devices; one or more sensor devices 650, 104', and possibly a user interface (UI) unit 660. The elements mentioned may be communicatively coupled to each other via, for example, an internal bus. One or more processors of the processing unit 610 may be any suitable processors for processing information and controlling the operation of the monitoring unit 102, etc. The memory unit 620 may store part of the computer program code 625, the machine learning module, i.e., the machine learning model 630, and any other data, and the processing unit 610 may cause the monitoring unit 120 to operate as described by executing at least some parts of the computer program code 625 stored in the memory unit 620. In addition, one or more memories of the memory unit 620 may be volatile or non-volatile. In addition, one or more memories are not limited to a certain type of memory, but any memory type suitable for storing the described information may be applied in the context of the present invention. The communication unit 640 may be based on at least one known wired or wireless communication technology in order to exchange information as described above. The communication unit 640 provides an interface for communicating with any external unit, such as at least one external actuating sensor device 104, a signaling sensor unit 106, an elevator control system 210, an external computing entity 108, a database, and / or any external system. The communication unit 640 may include one or more communication devices, such as a radio transceiver, an antenna, etc. As described above, the communication unit 640 may preferably be based on one or more mid-range radio frequency technologies, such as sub-gigahertz frequency technologies, in order to communicate with the signaling sensor unit 106. The sub-gigahertz frequency technology may be LoRa or any other sub-gigahertz frequency technology. One or more sensor devices 650 may include at least one internal actuating sensor device 104' and / or any other sensor devices, such as a pressure sensor, a temperature sensor, a microphone, a current sensor, etc., for detecting at least one operation of the elevator system 200 and / or providing operation data of the elevator system 200. The user interface 660 may include I / O devices for receiving input and outputting information, such as buttons, a keyboard, a touch screen, a microphone, a speaker, a display, etc. The power of the monitoring unit 102 may be provided from the mains via a plug, etc. Alternatively or additionally, the monitoring unit 102 may include a rechargeable battery, which provides power, for example, in the event of a power failure to enable the battery-powered monitoring unit to operate.

[0075] The signaling sensor unit 106 and / or the monitoring unit 102 can be implemented in any elevator system including a newly installed elevator system and an existing, i.e., operating elevator system. The signaling sensor unit 106 can be retrofitted to an existing elevator system and can be completely independent of the existing elevator system. In other words, the signaling sensor unit 106 can be arranged in an existing elevator system without communicatively coupling the signaling sensor unit 106 to one or more entities of the existing elevator system, such as a control unit. As described above, the sensor unit 104 can be only mechanically installed in a physical connection with the elevator system. Alternatively or additionally, the monitoring unit 102 and / or at least one actuating sensor device 104, 104' can be retrofitted to an existing elevator system and can be completely independent of the existing elevator system. In other words, the monitoring unit 102 and / or at least one actuating sensor device 104, 104' can be arranged in an existing, i.e., operating elevator system without communicatively coupling the monitoring unit 102 and / or at least one actuating sensor device 104, 104' to one or more entities of the existing elevator system, such as a control unit. As described above, the monitoring unit 102 and / or at least one actuating sensor device 104, 104' can be only physically and mechanically coupled to the elevator system. This enables the system 100 according to the invention to be implemented in a newly installed elevator system or an existing elevator system. By implementing the system 100 according to the invention in an existing elevator system, the condition of the existing elevator system can be monitored. In addition, this enables the entire system 100 according to the invention, at least one actuating sensor device 104, 104', the signaling sensor unit 106 and / or the monitoring unit 102 to have no requirements on the elevator system. Since the system 100 including the signaling sensor unit 106, at least one actuating sensor device 104, 104' and / or the monitoring unit 102 is completely independent of the elevator system, it enables the system 100 to be substantially easy to install into the elevator system 200.

[0076] The above-described system and method for detecting an inoperative state of an elevator system at least partially improve the reliability of monitoring the condition of the elevator system. In addition, the system and method according to the invention can be implemented in any new or existing elevator system, regardless of the manufacturer of the elevator system.

[0077] The specific examples provided in the above description should not be construed as limiting the applicability and / or interpretation of the appended claims. Unless otherwise expressly stated, the lists and groups of examples provided in the above description are not exhaustive.

Claims

1. A system (100) for detecting an inoperative state of an elevator system (200), the system (100) comprising: A signalized sensor unit (106) configured to obtain signalized traffic data of at least one control system bus; Obtain signalized traffic data of a control bus between an elevator control system and a hoisting motion control system, a control bus between the elevator control system and a door control unit, a control bus between the elevator control system and an elevator group control system, and / or a debug port of a processing unit of the elevator control system; Obtain signalized traffic data of a landing signal bus and / or a car signal bus, the landing signal bus being arranged between a landing call device and the elevator control system, and the car signal bus being arranged between a car operation panel and the elevator control system, At least one actuator sensor device (104, 104') configured to obtain actuator output data of at least one actuator entity of the elevator system (200) after obtaining the signalized traffic data, and An external computing entity, A monitoring unit (102) configured to: Generate reference actuator output data by applying a machine learning module (630) after obtaining the signalized traffic data, the machine learning module being stored in a memory unit of the monitoring unit, wherein the machine learning module is configured to receive the obtained signalized traffic data as its input data and generate the reference actuator output data as the output data of the machine learning module by applying one or more machine learning techniques, and Generate a signal indicating a non-operating state of the elevator system (200) to the external computing entity (108) in response to detecting a deviation between the obtained output data and the generated reference output data.

2. The system (100) according to claim 1, wherein, The at least one actuator entity of the elevator system (200) includes an elevator car (202), elevator doors (212, 216a - 216n), a hoisting system (204), a door control unit, and / or an elevator car lighting system.

3. The system (100) according to any one of the preceding claims, wherein, The signalized sensor unit (106) includes one or more serial detection devices (312a - 312n) for obtaining the signalized traffic data from a serial communication bus type control system bus.

4. The system (100) according to any one of the preceding claims, wherein, The signalized sensor unit (106) includes a parallel detection device (304) for obtaining the signalized traffic data from a parallel communication type control system bus.

5. The system (100) according to any one of the preceding claims, wherein, The signalized sensor unit (106) is configured to: wake up from a sleep mode in response to obtaining the signalized traffic data, provide the obtained signalized traffic data to the monitoring unit (102), and then return to the sleep mode.

6. The system (100) according to any one of the preceding claims, wherein, The monitoring unit (102) is further configured to provide a remote command request to the signalized sensor unit (106) to generate at least one remote command for controlling at least one actuator output of at least one actuator entity of the elevator system (200).

7. The system (100) according to any one of the preceding claims, wherein, The historical output data of at least one actuator entity of the elevator system (100) collected by the at least one actuator sensor device (104, 104'), and the historical traffic data of at least one elevator control system bus collected by the signalized sensor unit (106) are used as training data to train the machine learning module (630).

8. A method for detecting an inoperative state of an elevator system (200), the method comprising: Obtain the signalized traffic data of at least one control system bus through the signalized sensor unit (106); Obtain the signalized traffic data of the control bus between the elevator control system and the hoisting motion control system, the control bus between the elevator control system and the door control unit, the control bus between the elevator control system and the elevator group control system, and / or the debugging port of the processing unit of the elevator control system; Obtain the signalized traffic data of the landing signal bus and / or the car signal bus, where the landing signal bus is arranged between the landing call device and the elevator control system, and the car signal bus is arranged between the car operation panel and the elevator control system; After obtaining the signalized traffic data, obtain the actuation output data of at least one actuator entity of the elevator system (100) through at least one actuation sensor device (104, 104'); Through the monitoring unit (102), generate reference actuation output data by applying a machine learning module (630) after obtaining the signalized traffic data. The machine learning module is stored in the memory unit of the monitoring unit, where the machine learning module is configured to receive the obtained signalized traffic data as its input data and generate reference actuation output data as the output data of the machine learning module by applying one or more machine learning techniques, and Through the monitoring unit (102), in response to detecting a deviation between the obtained actuation output data and the generated reference actuation output data, generate a signal indicating the inoperative state of the elevator system (100) to an external computing entity (108).

9. The method according to claim 8, wherein, At least one actuator of the elevator system includes an elevator car (202), elevator doors (212, 216a - 216n), a hoisting system (204), a door control unit, and / or an elevator car lighting system.

10. The method according to claim 8 or 9, further comprising: In response to obtaining the signalized traffic data, wake up the signalized sensor unit (106) from the sleep mode; Provide the obtained signalized traffic data to the monitoring unit (102), and Return to the sleep mode.

11. The method according to any one of claims 8 to 10, further comprising: Provide a remote command request to the signalized sensor unit (106) through the monitoring unit (102) to generate at least one remote command for controlling the actuation output of at least one actuator entity of the elevator system (200).

12. The method according to any one of claims 8 to 11, comprising: Collect the historical actuation output data of at least one actuator entity of the elevator system (200) using at least one actuation sensor device (104, 104'); Collect the historical signalized traffic data of at least one elevator control system bus using the signalized sensor unit (106), and Use the collected historical output data and historical traffic data as training data to train the machine learning module (630).

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