Elevator status acquisition and diagnosis edge device and system

Abstract

The present application discloses an elevator state acquisition and diagnosis edge device and system, the device includes: multiple data acquisition modules, conversion coding modules and controllers; multiple data acquisition modules, used to collect image data in the elevator shaft and elevator car, elevator car motion data and elevator car position data and elevator brake coil current data; conversion coding module, connected to multiple data acquisition modules and controllers, used to convert image data, elevator car motion data, elevator car position data and current data into a unified data format; controller, used to receive the converted data, divide the converted data into edge-end processing data and server-end processing data according to a preset edge algorithm, analyze the edge-end processing data for fault warning and unload the server-end processing data to the server. The present application solves the problem that the elevator operation status and fault monitoring types in the prior art are relatively incomplete.

Description

Technical Field

[0001] The present application relates to the technical field of elevator data collection and fault diagnosis, and in particular to an elevator status collection and diagnosis edge device and system. Background Art

[0002] With the rapid development of my country's urbanization process, the number of elevators continues to double and they are used frequently. The failure rate of elevators is also rising. The safety of elevator operation is directly related to the life safety and quality of life of the people. Therefore, the operation performance and safety performance of elevators have received great attention. In order to ensure the safety of elevator operation, it is necessary to monitor the operation status of the elevator and issue a real-time alarm when an elevator fails.

[0003] At present, the methods for monitoring the operation status of an elevator and making a real-time alarm when an elevator fails mainly include the following: one is to collect data related to the abnormal operation of the elevator from the elevator controller interface through the elevator monitoring system; the other is to connect an elevator sensor to the elevator and collect data related to the abnormal operation of the elevator through the external sensor; however, since there are many key symptom parameters involved in the elevator abnormality, in the prior art, whether it is collecting data related to the abnormal operation of the elevator through the elevator monitoring system or collecting data related to the abnormal operation of the elevator through the external sensor, the types of data related to the abnormal operation collected are limited and incomplete, and it can only be judged whether the elevator has a fault based on the collected data related to the abnormal operation of the elevator, and the health status of the elevator cannot be predicted, resulting in incomplete monitoring of the elevator operation status and faults. Summary of the invention

[0004] The technical problem solved by the present application is: the existing technology is not comprehensive in monitoring the elevator operation status and faults. The present application provides an elevator status acquisition and diagnosis edge device and system. In the solution provided by the embodiment of the present application, on the one hand, multiple data acquisition modules are used to collect image data in the elevator shaft and elevator car, elevator car motion data and elevator car position data, and elevator brake coil current data, so as to realize the collection of multiple key symptom parameters involved in elevator abnormalities, so as to make data collection comprehensive, thereby improving the comprehensiveness of elevator operation status and fault monitoring; on the other hand, the controller divides the data collected by multiple data acquisition modules into edge-end processing data and server-end processing data according to the preset edge algorithm, analyzes the edge-end processing data for fault warning, and unloads the server-end processing data to the server, which can not only warn of faults according to the collected data, but also cooperate with the server to realize fault warning and analysis, and improve fault warning and analysis efficiency.

[0005] In a first aspect, an embodiment of the present application provides an elevator status acquisition and diagnosis edge device, the device comprising: a plurality of data acquisition modules, a conversion encoding module and a controller; wherein:

[0006] The multiple data acquisition modules are used to collect image data in the elevator shaft and elevator car, elevator car motion data, elevator car position data and elevator brake coil current data, wherein the elevator car motion data includes speed, acceleration and vibration signals;

[0007] The conversion encoding module is connected to the multiple data acquisition modules and the controller, and is used to convert the image data, the elevator car motion data, the elevator car position data and the elevator brake coil current data into a unified data format;

[0008] The controller is used to receive the converted data, divide the converted data into edge-side processing data and server-side processing data according to a preset edge algorithm, analyze the edge-side processing data for fault warning, and unload the server-side processing data to the server, so that the server can perform refined fault analysis based on the server-side processing data.

[0009] In the solution provided in the embodiment of the present application, on the one hand, multiple data acquisition modules are used to collect image data in the elevator shaft and elevator car, elevator car motion data and elevator car position data, so as to realize the collection of various key sign parameters involved in elevator abnormalities, thereby improving the comprehensiveness of data collection and further improving the comprehensiveness of elevator operation status and fault monitoring; on the other hand, the controller divides the data collected by multiple data acquisition modules into edge-end processing data and server-end processing data according to a preset edge algorithm, analyzes the edge-end processing data for fault warning and unloads the server-end processing data to the server, which can not only warn of faults based on the collected data, but also cooperate with the server to realize fault warning and analysis, thereby improving fault warning and analysis efficiency.

[0010] Optionally, the multiple data acquisition modules include: an image acquisition module, a vibration signal acquisition module, an acceleration sensor, an infrared human body sensor, an RFID radio frequency maintenance module, a GPS / Beidou positioning module, a magnetic switch sensor, and a brake coil current acquisition module; wherein,

[0011] The image acquisition module includes a first image acquisition module arranged in the elevator car and a second image acquisition module arranged in the elevator shaft, wherein the first image acquisition module is used to acquire image data in the elevator car, and the second image acquisition module is used to acquire image data of the traction wheel and wire rope state of the elevator shaft and video image data of the maintenance operation process;

[0012] The vibration signal acquisition module is used to collect vibration signals; the acceleration sensor is used to collect the acceleration of the elevator car; the infrared human body sensor is used to determine whether there is someone in the elevator car; the RFID radio frequency maintenance module is used to record elevator maintenance information, wherein the elevator maintenance information includes maintenance time, maintenance personnel and maintenance elevator; the GPS / Beidou positioning module is used to obtain time information and elevator location information, and update the local clock of the device according to the time information;

[0013] The magnetic switch sensors include upper and lower leveling magnetic switch sensors, base station magnetic switch sensors, and car door magnetic switch sensors, which are used to obtain elevator car position arrival signals.

[0014] The brake holding coil current acquisition module is used to acquire elevator brake holding coil current data in real time and upload the current data to the controller.

[0015] Optionally, the vibration signal acquisition module includes: a vibration conditioning circuit, a vibration sensor and an external high-speed A / D sampling circuit, wherein:

[0016] The vibration conditioning circuit is used to generate a constant current signal and send the constant current signal to the vibration sensor;

[0017] The vibration sensor is used to receive the constant current signal, generate a voltage signal that varies with the vibration acceleration according to the constant current signal, and send the voltage signal to the external high-speed A / D sampling circuit;

[0018] The external high-speed A / D sampling circuit is used to receive the voltage signal and send the voltage signal to the conversion coding module.

[0019] Optionally, the conversion encoding module includes: a current signal conditioning circuit, a voltage signal conditioning circuit, a multi-channel digital-to-analog converter, a transmission message encoder, an isolation transmitter, and an impedance converter; wherein,

[0020] The current signal conditioning circuit is used to isolate, amplify or attenuate the current signal; the voltage signal conditioning circuit is used to isolate, amplify or attenuate the voltage signal;

[0021] The multi-channel digital-to-analog converter is used to perform A / D digital-to-analog conversion on the signals collected by the multiple data collection modules;

[0022] The transmission message encoder is used to serialize the data from the multi-channel analog-to-digital converter according to a preset frame format standard and a preset mapping order to obtain a communication message, and transmit the communication to the isolation transmitter;

[0023] The isolation transmitter is used to perform signal anti-interference processing on the signals collected by the multiple data acquisition modules; the impedance converter is used to perform impedance matching.

[0024] Optionally, it also includes a multi-party intercom module; the multi-party intercom module is connected to the conversion coding module, and is used to communicate with the call modules installed at the management center host, the elevator car, the elevator room, the top of the elevator, and the bottom of the elevator to enable multi-party conversations.

[0025] Optionally, it also includes: a communication module and an interface module; wherein the communication module is connected to the controller and used for communication between the controller and an external device; the interface module is used to connect to the controller and connect the controller to an external device.

[0026] Optionally, the communication module includes: a NB-IOT wireless communication module and an Ethernet communication module.

[0027] Optionally, the controller is specifically used to:

[0028] Analyze the vibration signal to obtain a digital vibration signal corresponding to the vibration amplitude and the vibration severity, perform modal decomposition on the vibration signal according to a preset EMD algorithm to obtain a complex signal, and perform fault warning on the traction machine motor according to the digital vibration signal and the complex signal; or

[0029] Receive the video image data collected by the second image acquisition module, and determine the state image data of the traction wheel and the wire rope at a preset viewing angle according to the video image data; perform feature point extraction, comparison and identification according to the state image data and a preset machine vision algorithm, predict the fault of the traction wheel at a preset viewing angle according to the comparison and identification results, and send the prediction result to the server, so that the server issues a fault warning according to the prediction result; or

[0030] The elevator brake holding coil current data is received in real time, the elevator brake holding coil current data is monitored in real time to obtain a monitoring result, and a brake fault warning is issued according to the monitoring result.

[0031] In a second aspect, an embodiment of the present application provides an elevator status collection and diagnosis system, the system comprising: an edge device and a server as described in the first aspect; wherein:

[0032] The edge device is used to collect image data in the elevator shaft and elevator car, elevator car motion data, elevator car position data, and elevator brake coil current data of at least one elevator, and divide the image data, the motion data, the position data, and the current data into edge-end processing data and server-end processing data according to a preset edge algorithm, analyze the edge-end processing data for fault warning, and unload the server-end processing data to a server;

[0033] The server is used to receive the server-side processed data and perform refined fault analysis based on the server-side processed data.

[0034] Optionally, the edge device communicates with the server via a NB-IOT wireless network and an Ethernet network. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of the structure of an elevator status acquisition and diagnosis edge device provided in an embodiment of the present application;

[0036] Figure 2 A schematic diagram of the structure of a vibration signal acquisition module provided in an embodiment of the present application;

[0037] Figure 3 A schematic diagram of the structure of a conversion coding module provided in an embodiment of the present application;

[0038] Figure 4 A schematic diagram of the structure of an elevator status acquisition and diagnosis system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] In the solutions provided in the embodiments of this application, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] In order to better understand the above technical scheme, the technical scheme of the present application is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical scheme of the present application, rather than limitations on the technical scheme of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.

[0041] See also Figure 1 , an elevator status acquisition and diagnosis edge device provided in an embodiment of the present application, the device comprises: a plurality of data acquisition modules 1, a conversion encoding module 2 and a controller 3; wherein,

[0042] The multiple data acquisition modules 1 are used to collect image data in the elevator shaft and elevator car, elevator car motion data, elevator car position data and elevator brake coil current data, wherein the elevator car motion data includes speed, acceleration and vibration signals;

[0043] The conversion encoding module 2 is connected to the multiple data acquisition modules 1 and the controller 3, and is used to convert the image data, the elevator car motion data, the elevator car position data and the elevator brake coil current data into a unified data format;

[0044] The controller 3 is used to receive the converted data, divide the converted data into edge-side processing data and server-side processing data according to a preset edge algorithm, analyze the edge-side processing data for fault warning, and unload the server-side processing data to the server, so that the server can perform refined fault analysis based on the server-side processing data.

[0045] Further, in a possible implementation, the multiple data acquisition modules 1 include: an image acquisition module 11, a vibration signal acquisition module 12, an acceleration sensor 13, an infrared human body sensor 14, an RFID radio frequency maintenance module 15, a GPS / Beidou positioning module 16, a magnetic switch sensor 17 and a brake holding coil current acquisition module 18; wherein,

[0046] The image acquisition module 11 includes a first image acquisition module 111 disposed in the elevator car and a second image acquisition module 112 disposed in the elevator shaft, wherein the first image acquisition module 111 is used to acquire image data in the elevator car, and the second image acquisition module 112 is used to acquire image data of the traction wheel and wire rope status of the elevator shaft and video image data of the maintenance operation process;

[0047] The vibration signal acquisition module 12 is used to collect vibration signals; the acceleration sensor 13 is used to collect the acceleration of the elevator car; the infrared human body sensor 14 is used to determine whether there is someone in the elevator car; the RFID radio frequency maintenance module 15 is used to record elevator maintenance information, wherein the elevator maintenance information includes maintenance time, maintenance personnel and maintenance elevator; the GPS / Beidou positioning module 16 is used to obtain time information and elevator location information, and update the local clock of the device according to the time information;

[0048] The magnetic switch sensor 17 includes upper and lower leveling magnetic switch sensors 171, a base station magnetic switch sensor 172, and a car door magnetic switch sensor 173, which are used to obtain the elevator car position arrival signal.

[0049] The brake holding coil current acquisition module 18 is used to acquire elevator brake holding coil current data in real time and upload the current data to the controller.

[0050] Specifically, in the solution provided in the embodiment of the present application, the edge device realizes the collection of multiple types of information through peripheral multi-source heterogeneous sensors and supporting collection circuits, wherein the multi-source heterogeneous sensors and supporting collection circuits include an image collection module 11, a vibration signal collection module 12, an acceleration sensor 13, an infrared human body sensor 14, an RFID radio frequency maintenance module 15, a GPS / Beidou positioning module 16, a magnetic switch sensor 17, and a brake holding coil current collection module 18. For ease of understanding, the functions of each sensor and supporting collection circuit are briefly introduced below.

[0051] 1. Image acquisition module 11

[0052] Specifically, in the solution provided in the embodiment of the present application, the image acquisition module 11 can be a camera, a still camera or other equipment with image data acquisition function, which is not limited here. In order to facilitate real-time monitoring of the elevator shaft and the elevator car, a first image acquisition module 111 is set in the elevator car, and a second image acquisition module 112 is set in the elevator shaft, wherein the first image acquisition module 111 is used to collect image data in the elevator car, so as to analyze whether there are passengers in the elevator car and whether the passengers have abnormal behavior according to the image data in the elevator car; the second image acquisition module 112 is used to collect the image data of the traction wheel and wire rope state of the elevator shaft and the video image data of the maintenance operation process, so that the controller can extract, compare and identify feature points based on the state image of the preset traction wheel fixed key perspective through the machine vision algorithm embedded in the running edge device, and when there are signs of abnormality in this part, the report server issues an early warning.

[0053] 2. Vibration signal acquisition module 12

[0054] See also Figure 2 In a possible implementation, the vibration signal acquisition module 12 includes: a vibration conditioning circuit 121, a vibration sensor 122 and an external high-speed A / D sampling circuit 123, wherein:

[0055] The vibration conditioning circuit 121 is used to generate a constant current signal and send the constant current signal to the vibration sensor 122;

[0056] The vibration sensor 122 is used to receive the constant current signal, generate a voltage signal that varies with the vibration acceleration according to the constant current signal, and send the voltage signal to the external high-speed A / D sampling circuit 123;

[0057] The external high-speed A / D sampling circuit 123 is used to receive the voltage signal and send the voltage signal to the conversion coding module 2.

[0058] 3. Acceleration sensor 13

[0059] Specifically, in the solution provided in the embodiment of the present application, the acceleration sensor 13 is arranged on the elevator to collect parameters such as acceleration, speed, displacement, etc. of the elevator car, so that the controller 3 can determine whether the state of the car running up and down the shaft is normal based on the acceleration, speed, displacement, etc.

[0060] 4. Infrared human body sensor 14

[0061] Specifically, in the solution provided in the embodiment of the present application, the infrared human body sensor 14 is arranged in the elevator car to collect infrared signals in the elevator car, so that the controller 3 determines whether there are passengers in the car according to the infrared signals.

[0062] 5. RFID radio frequency maintenance module 15

[0063] Specifically, in the solution provided in the embodiment of the present application, an elevator maintenance RFID radio frequency module 15 is built into the elevator signal collection box in the hoistway. When the elevator maintenance personnel completes the maintenance work, by swiping the RFID maintenance card on the module, the system automatically stores the maintenance record and uploads it to the server database.

[0064] 6. GPS / Beidou positioning module 16

[0065] Specifically, the GPS / Beidou positioning module 16 can obtain time information and update the local clock of the device. At the same time, the geographic location information is automatically added to the basic information of the elevator and uploaded to the management system, thereby assisting in determining the unique identification of the elevator. At the same time, Beidou can also realize the positioning function. When a specific elevator fails, it can be accurately located so that maintenance personnel can arrive in time.

[0066] 7. Magnetic switch sensor 17

[0067] Specifically, in the scheme provided in the embodiment of the present application, the magnetic switch sensor 17 includes an upper and lower leveling magnetic switch sensor 171, a base station magnetic switch sensor 172, and a car door magnetic switch sensor 173, wherein the upper and lower leveling magnetic switch sensor 171 is used to collect the elevator car top position arrival signal and the bottom position arrival signal; the base station magnetic switch sensor 172 is used to collect the elevator parking base station signal, specifically, the base station sensor is installed on the car top beam column near the guide rail side, and a high-density magnetic strip is installed on the guide rail at the base station, which does not affect the normal operation of the elevator. When the base station sensor runs to the magnetic strip area with the elevator, the sensor monitors the car parking base station (the floor where the elevator stops when the elevator is closed (parked)) arrival signal; the car door magnetic switch sensor 173 is used to collect the car door opening or closing arrival signal. Specifically, by ensuring that the car door lock is fully engaged and the car door lock contacts are fully in contact at the appropriate position of the car door, it is ensured that there is no scratching when the elevator opens and closes the door, and the switch action is sensitive and reliable, and a bistable electromagnetic switch sensor is installed to collect the car door opening or closing arrival signal. The controller 3 detects whether the elevator has any faults such as hitting the top, squatting at the bottom, or stopping outside the door area based on the arrival signals collected by the upper and lower leveling magnetic switch sensors 171, the base station magnetic switch sensor 172, and the car door magnetic switch sensor 173.

[0068] 8. Brake coil current acquisition module 18

[0069] Specifically, since the brake is a key component of the elevator, its working reliability directly affects the safe operation of the elevator. The brake coil current acquisition module collects the elevator brake coil current data in real time and uploads it to the edge device controller, which monitors the change value in real time to timely discover the hidden dangers of brake failure.

[0070] For further information, see Figure 3 In a possible implementation, the conversion coding module 2 includes: a current signal conditioning circuit 21, a voltage signal conditioning circuit 22, a multi-channel digital-to-analog converter 23, a transmission message encoder 24, an isolation transmitter 25, and an impedance converter 26; wherein,

[0071] The current signal conditioning circuit 21 is used to isolate, amplify or attenuate the current signal; the voltage signal conditioning circuit 22 is used to isolate, amplify or attenuate the voltage signal;

[0072] The multi-channel digital-to-analog converter 23 is used to perform A / D digital-to-analog conversion on the signals collected by the multiple data collection modules;

[0073] The transmission message encoder 24 is used to serialize the data from the multi-channel analog-to-digital converter according to a preset frame format standard and a preset mapping order to obtain a communication message, and transmit the communication to the isolation transmitter;

[0074] The isolation transmitter 25 is used to perform signal anti-interference processing on the signals collected by the multiple data collection modules; the impedance converter 26 is used to perform impedance matching.

[0075] Specifically, in the solution provided in the embodiment of the present application, the transmission standards, transmission interfaces and data formats of different types of elevator data are inconsistent. In order to solve the multi-source and heterogeneous nature of elevator monitoring data, it is necessary to input the collected various types of elevator data into the conversion coding module 2, and then convert the multi-source data through the conversion coding module 2.

[0076] Furthermore, in the solution provided in the embodiment of the present application, the current signal and the voltage signal are isolated, amplified or attenuated respectively by the current signal conditioning circuit 21 and the voltage signal conditioning circuit 22 to ensure the accuracy of signal sampling, avoid interference and errors caused by power supply noise, and ultimately meet the requirements of signal transmission accuracy and stability; and the signal is isolated, impedance transformed, linearized and filtered by the isolation transmitter 25 and the impedance converter 26 to convert the electrical signal output by the sensor into a standard signal output as undistorted as possible, including filtering circuits, linearization processing and conversion circuits between electrical parameters.

[0077] Furthermore, in order to ensure timely and efficient rescue of faults, in one possible implementation method, it also includes a multi-party intercom module 4; the multi-party intercom module 4 is connected to the conversion coding module 2, and is used to communicate with the call modules installed at the management center host, the elevator car, the elevator room, the top of the elevator, and the bottom of the elevator, so as to realize multi-party conversation.

[0078] Specifically, in the solution provided in the embodiment of the present application, multi-party intercom refers to the conversation between the five parties in the elevator intercom system: the management center host, the elevator car, the elevator machine room, the top of the elevator, and the bottom of the elevator. In actual applications, the elevator five-party intercom system is often connected to the property department telephone through a telephone line, which is used for passengers trapped in the elevator to contact the outside world. After the elevator breaks down, the passenger manually presses the emergency button in the elevator car to contact the property department, and the property department then informs the maintenance company to come and carry out emergency repairs. However, this communication system has great limitations. If there is no on-duty personnel waiting next to the landline, the trapped people in the elevator will not be able to get in touch with the outside world in time.

[0079] The five-party intercom module is connected to the five-party intercom system inside the elevator, and the maintenance personnel's contact number is stored in the monitoring system. Trapped passengers can directly contact the maintenance personnel through the elevator's internal phone, and the maintenance personnel can greatly shorten the rescue time and provide end-to-end real-time rescue services. In addition, the system can set multiple contacts and call priorities, and automatically track and promote the entire process to ensure efficient and timely rescue.

[0080] Furthermore, in order to facilitate connection with other external devices, in a possible implementation method, it also includes: a communication module 5 and an interface module 6; wherein the communication module 5 is connected to the controller 3 and is used for communication connection between the controller 3 and the external device; the interface module 6 is used to connect to the controller 3 and is used to connect the controller 3 to the external device.

[0081] Further, in a possible implementation, the communication module 5 includes: a NB-IOT wireless communication module 51 and an Ethernet communication module 52.

[0082] Specifically, in the solution provided in the embodiment of the present application, the NB-IoT wireless communication module 51 can maintain the normal operation of the monitoring device while consuming relatively low power. Its battery life is generally more than 10 years, and it has greatly improved the security and reliability of information, reducing many unnecessary interference problems, and can be well suited for long-term communication of elevator remote monitoring systems. At the same time, the NB-IoT technology signal has a wide coverage range and strong penetration, and can cover underground garages, basements, underground corridors and other places where ordinary wireless network signals are difficult to reach. It is particularly suitable for multi-corridor operating environments such as elevator Internet of Things. In addition, because NB-IoT technology is not sensitive to service delays, it can connect more users, and a large number of terminals are in a dormant state. Once data is sent, it can quickly enter a connected state, which is well suited for large-scale elevator Internet of Things communications.

[0083] Further, in a possible implementation manner, the controller 3 is specifically configured to:

[0084] Analyze the vibration signal to obtain a digital vibration signal corresponding to the vibration amplitude and the vibration severity, perform modal decomposition on the vibration signal according to a preset EMD algorithm to obtain a complex signal, and perform fault warning on the traction machine motor according to the digital vibration signal and the complex signal; or

[0085] Receive the video image data collected by the second image acquisition module, and determine the state image data of the traction wheel and the wire rope at a preset viewing angle according to the video image data; perform feature point extraction, comparison and identification according to the state image data and a preset machine vision algorithm, predict the fault of the traction wheel at a preset viewing angle according to the comparison and identification results, and send the prediction result to the server, so that the server issues a fault warning according to the prediction result; or

[0086] The elevator brake holding coil current data is received in real time, the elevator brake holding coil current data is monitored in real time to obtain a monitoring result, and a brake fault warning is issued according to the monitoring result.

[0087] Specifically, in the solution provided in the embodiment of the present application, the edge device filters the vibration signal and performs data analysis to obtain intuitive vibration digital signals such as vibration amplitude and vibration severity. The vibration signal is modally decomposed using the empirical mode EMD algorithm, and then the intrinsic mode function IMF obtained by the decomposition is subjected to HHT Hilbert transform. After the complex signal is obtained, the traction motor fault is diagnosed according to the characteristic frequency in the amplitude spectrum diagram. Through a series of tests such as vibration frequency, amplitude, trend, etc., the current status of the elevator's key components, the traction motor and brake, is mastered. If there is a sign of a fault, an alarm can be promptly detected and repaired immediately.

[0088] Furthermore, in the solution provided in the embodiment of the present application, in order to ensure the normal operation of the elevator status acquisition and diagnosis edge device, the elevator status acquisition and diagnosis edge device also includes a storage module and a power supply and charging voltage stabilization circuit.

[0089] In the solution provided in the embodiment of the present application, on the one hand, multiple data acquisition modules 1 are used to collect image data in the elevator shaft and elevator car, elevator car motion data and elevator car position data, so as to realize the collection of various key sign parameters involved in elevator abnormalities, thereby improving the comprehensiveness of data collection and further improving the comprehensiveness of elevator operation status and fault monitoring; on the other hand, the controller 3 divides the data collected by the multiple data acquisition modules 1 into edge-end processing data and server-end processing data according to a preset edge algorithm, analyzes the edge-end processing data for fault warning and unloads the server-end processing data to the server, which can not only warn of faults based on the collected data, but also cooperate with the server to realize fault warning and analysis, thereby improving fault warning and analysis efficiency.

[0090] See also Figure 4 The embodiment of the present application provides an elevator status acquisition and diagnosis system, the system comprising: Figure 1 The edge device and the server; wherein,

[0091] The edge device is used to collect image data in the elevator shaft and elevator car, elevator car motion data, elevator car position data, and elevator brake coil current data of at least one elevator, and divide the image data, the motion data, the position data, and the current data into edge-end processing data and server-end processing data according to a preset edge algorithm, analyze the edge-end processing data for fault warning, and unload the server-end processing data to a server;

[0092] The server is used to receive the server-side processed data and perform refined fault analysis based on the server-side processed data.

[0093] In a possible implementation, the edge device communicates with the server via a NB-IOT wireless network and an Ethernet network.

[0094] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0095] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0096] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0097] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0098] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. An elevator status acquisition and diagnosis edge device, characterized in that: include: Multiple data acquisition modules, conversion encoding modules and controllers; wherein, The multiple data acquisition modules are used to collect image data in the elevator shaft and elevator car, elevator car motion data, elevator car position data and elevator brake coil current data, wherein the elevator car motion data includes speed, acceleration and vibration signals; The conversion encoding module is connected to the multiple data acquisition modules and the controller, and is used to convert the image data, the elevator car motion data and the elevator car position data into a unified data format; The controller is used to receive the converted data, divide the converted data into edge-end processing data and server-end processing data according to a preset edge algorithm, analyze the edge-end processing data for fault warning, and unload the server-end processing data to the server, so that the server performs refined fault analysis according to the server-end processing data; The multiple data acquisition modules include: image acquisition module, vibration signal acquisition module, acceleration sensor, infrared human body sensor, RFID radio frequency maintenance module, GPS / Beidou positioning module, magnetic switch sensor and brake coil current acquisition module; wherein, The image acquisition module includes a first image acquisition module arranged in the elevator car and a second image acquisition module arranged in the elevator shaft, wherein the first image acquisition module is used to acquire image data in the elevator car, and the second image acquisition module is used to acquire image data of the traction wheel and wire rope state of the elevator shaft and video image data of the maintenance operation process; The vibration signal acquisition module is used to collect vibration signals; the acceleration sensor is used to collect the acceleration of the elevator car; the infrared human body sensor is used to determine whether there is someone in the elevator car; the RFID radio frequency maintenance module is used to record elevator maintenance information, wherein the elevator maintenance information includes maintenance time, maintenance personnel and maintenance elevator; the GPS / Beidou positioning module is used to obtain time information and elevator location information, and update the local clock of the device according to the time information; The magnetic switch sensors include upper and lower leveling magnetic switch sensors, base station magnetic switch sensors, and car door magnetic switch sensors, which are used to obtain elevator car position arrival signals; The brake holding coil current acquisition module is used to collect elevator brake holding coil current data in real time and upload the current data to the controller; The vibration signal acquisition module includes: a vibration conditioning circuit, a vibration sensor and an external high-speed A / D sampling circuit, wherein: The vibration conditioning circuit is used to generate a constant current signal and send the constant current signal to the vibration sensor; The vibration sensor is used to receive the constant current signal, generate a voltage signal that varies with the vibration acceleration according to the constant current signal, and send the voltage signal to the external high-speed A / D sampling circuit; The external high-speed A / D sampling circuit is used to receive the voltage signal and send the voltage signal to the conversion coding module; The conversion coding module includes: a current signal conditioning circuit, a voltage signal conditioning circuit, a multi-channel digital-to-analog converter, a transmission message encoder, an isolation transmitter, and an impedance converter; wherein, The current signal conditioning circuit is used to isolate, amplify or attenuate the current signal; the voltage signal conditioning circuit is used to isolate, amplify or attenuate the voltage signal; The multi-channel digital-to-analog converter is used to perform A / D digital-to-analog conversion on the signals collected by the multiple data collection modules; The transmission message encoder is used to serialize the data from the multi-channel digital-to-analog converter according to a preset frame format standard and a preset mapping order to obtain a communication message, and transmit the communication to the isolation transmitter; The isolation transmitter is used to perform signal anti-interference processing on the signals collected by the multiple data acquisition modules; the impedance converter is used to perform impedance matching; The device also includes a multi-party intercom module, which is used to communicate with the management center host, the elevator car, the elevator room, the elevator top, and the call module installed at the bottom of the elevator to enable multi-party conversations; The controller is specifically used for: Analyze the vibration signal to obtain a digital vibration signal corresponding to the vibration amplitude and the vibration severity, perform modal decomposition on the vibration signal according to a preset EMD algorithm to obtain a complex signal, and perform fault warning on the traction machine motor according to the digital vibration signal and the complex signal; or Receive the video image data collected by the second image acquisition module, and determine the state image data of the traction wheel and the wire rope at a preset viewing angle according to the video image data; perform feature point extraction, comparison and identification according to the state image data and a preset machine vision algorithm, predict the fault of the traction wheel at a preset viewing angle according to the comparison and identification results, and send the prediction result to the server, so that the server issues a fault warning according to the prediction result; or The elevator brake holding coil current data is received in real time, the elevator brake holding coil current data is monitored in real time to obtain a monitoring result, and a brake fault warning is issued according to the monitoring result.

2. The device according to claim 1, characterized in that Also includes: A communication module and an interface module; wherein the communication module is connected to the controller and is used for communication between the controller and an external device; The interface module is used to connect with the controller and to connect the controller with an external device.

3. The device according to claim 2, characterized in that The communication module includes: an NB-IOT wireless communication module and an Ethernet communication module.

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