Intelligent monitoring system for escalator and escalator

Abstract

The intelligent monitoring system comprises a sensor assembly, a terminal controller and a man-machine interaction device, the sensor assembly comprises an infrared thermal imaging sensor, a microswitch sensor and a rotary encoder, the infrared thermal imaging sensor is arranged on a truss of a machine room of the escalator, the microswitch sensor is arranged on the truss of the machine room of the escalator, and the rotary encoder is arranged on the terminal controller. The microswitch sensor is arranged on the brake, and the rotary encoder is arranged on the driving wheel. The terminal controller comprises a power supply module, an MCU board, an RS485 / TTL module and an optical coupler isolation module, the power supply module is connected with the MCU board, the RS485 / TTL module is connected with the MCU board, the optical coupler isolation module is connected with the MCU board, the man-machine interaction device comprises a display screen, and the display screen is arranged in a monitoring room; the escalator comprises the intelligent monitoring system and further comprises a footpath, a driving device and handrails. The escalator brake state monitoring device has the advantages that the state of the escalator brake can be accurately monitored, manual operation is not needed, and interference and damage risks to the brake are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of monitoring systems, and more specifically, it relates to an intelligent monitoring system and an escalator for escalators. Background Art

[0002] In large public places such as shopping malls, subways, and airports, escalators are important in-building transportation equipment. The escalators commonly used in public places can be divided into moving escalators and moving walkways. As the core safety component of the escalator, the brake can quickly and effectively stop the movement of the steps or walkway in case of an emergency, thus protecting the safety of passengers.

[0003] The following defects exist in the prior art: The safety detection of escalators still relies on manual operation. The traditional brake detection method is usually carried out when the equipment is shut down or in a low-load state, and it is impossible to monitor the performance of the brake in a high-load or emergency situation in real time. Therefore, once a problem occurs with the brake during peak hours or in an emergency, it may not be discovered and handled in time. Summary of the Utility Model

[0004] In order to overcome the above technical defects, the utility model provides an intelligent monitoring system and an escalator for escalators.

[0005] To solve the above problems, the utility model is implemented according to the following technical solutions: An intelligent monitoring system for an escalator, comprising:

[0006] A sensor assembly, the sensor assembly includes an infrared thermal imaging sensor, a microswitch sensor, and a rotary encoder. The infrared thermal imaging sensor is arranged on the escalator machine room truss, the microswitch sensor is arranged on the brake, and the rotary encoder is arranged on the drive wheel;

[0007] A terminal controller, the terminal controller includes a power module, an MCU board, an RS485 / TTL module, and an opto-isolation module, and is used to collect, store, and analyze the data monitored by the sensor assembly. Among them, the power module is connected to the MCU board, the RS485 / TTL module is connected to the MCU board, and the opto-isolation module is connected to the MCU board;

[0008] A human-machine interaction device, the human-machine interaction device includes a display screen, and is used to receive the escalator operation data processed by the terminal controller. Among them, the display screen is arranged in the monitoring room.

[0009] In some of the embodiments, the sensor assembly further includes a noise sensor, and the noise sensor is arranged on the escalator machine room truss.

[0010] In some of these embodiments, the sensor assembly further includes an AC current transducer for monitoring the output current of the escalator motor.

[0011] In some of these embodiments, the sensor assembly further includes a DC voltage and current sensor for monitoring the voltage and current on the brake circuit.

[0012] In some of these embodiments, both the AC current transducer and the DC voltage and current sensor are connected to the RS485 / TTL module through an A / D acquisition module.

[0013] In some of these embodiments, the terminal controller further includes a relay module connected to the MCU board.

[0014] In some of these embodiments, the human-machine interaction device further includes a building system server connected to the display screen.

[0015] In some of these embodiments, the terminal controller is connected to the human-machine interaction device through a LoRa module.

[0016] The present utility model also provides an escalator, including the intelligent monitoring system for escalators, and further including a walkway, a driving device, and handrails.

[0017] Compared with the prior art, the beneficial effects of the present utility model are:

[0018] 1. The intelligent monitoring system for escalators includes a sensor assembly, a terminal controller, and a human-machine interaction device. The sensor assembly includes an infrared thermal imaging sensor, a microswitch sensor, and a rotary encoder. The infrared thermal imaging sensor is disposed on the escalator machine room truss, the microswitch sensor is disposed on the brake, and the rotary encoder is disposed on the driving wheel. The terminal controller includes a power module, an MCU board, an RS485 / TTL module, and an opto-isolation module, and is used for summarizing, storing, and analyzing the data monitored by the sensor assembly. The power module is connected to the MCU board, the RS485 / TTL module is connected to the MCU board, and the opto-isolation module is connected to the MCU board. The human-machine interaction device includes a display screen and is used for receiving the escalator operation data processed by the terminal controller. The display screen is disposed in the monitoring room. Through the above intelligent monitoring system, accurate monitoring of the escalator brake state can be achieved without manual operation, reducing the risk of interference and damage to the brake.

[0019] 2. The escalator includes the above intelligent monitoring system, and further includes a walkway, a driving device, and handrails, and can monitor the escalator operation state in real time, thereby improving the safety performance of the escalator. Description of the Drawings

[0020] The following further elaborates on the specific embodiments of the present utility model in conjunction with the accompanying drawings, where:

[0021] Figure 1 It is a layout schematic diagram of the sensor assembly inside the escalator;

[0022] Figure 2 It is a principle block diagram of the intelligent monitoring system.

[0023] In the figure:

[0024] 1. Terminal controller; 2. Human-machine interaction device; 3. Infrared thermal imaging sensor; 4. Microswitch sensor; 5. Rotary encoder; 6. Power supply module; 7. MCU board; 8. RS485 / TTL module; 9. Optocoupler isolation module; 10. Noise sensor; 11. AC current transmitter; 12. DC voltage and current sensor; 13. A / D acquisition module; 14. Relay module; 15. LoRa module. Specific embodiments

[0025] The following describes the preferred embodiments of the present utility model in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model. The orientation terms such as "upper" and "lower" involved herein are relative to the perspective of the drawings, and are only for convenience of description and should not be construed as a limitation to the technical solution. The "first, second,..." used herein are only for differentiating names and do not represent specific quantities and orders.

[0026] Such as Figure 1 And Figure 2As shown in the figure, the present utility model provides an intelligent monitoring system for an escalator. The intelligent monitoring system for an escalator includes a sensor assembly, a terminal controller 1, and a human-machine interaction device 2. The sensor assembly is used to collect the working parameters of the brake and the operation status information of the escalator in real time. Specifically, the sensor assembly includes an infrared thermal imaging sensor 3, a microswitch sensor 4, and a rotary encoder 5. The infrared thermal imaging sensor 3 is fixedly installed on the escalator machine room truss, and the camera angle is adjusted so that the motor, especially the brake, completely appears in the monitoring screen. The infrared thermal imaging sensor 3 adopts the MI48x3 model with a model having 80H×62V temperature measurement pixels, which is used to record the temperature change of the brake wheel, effectively monitor whether the brake is running with the brake engaged, and the abnormal temperature of the motor during operation. The microswitch sensor 4 is arranged on the brake. The microswitch sensor adopts the 4WQ18-SD model. The action signal of the brake is collected through the microswitch sensor 4. At the same time, by combining the monitoring of the brake power-off signal, the braking response time is measured by comparing the time difference between the two signals. As the wear amount of the brake shoe accumulates, the brake shoe gap continuously increases, and the time required to reach the rated braking torque also increases accordingly, which will cause the braking response time to exceed the limit, so as to be used to detect and judge the brake shoe gap and the wear amount of the brake shoe. The rotary encoder 5 is arranged on the drive wheel. The rotary encoder 5 adopts the DBS36E model, which is used to detect the operation status and position information of the escalator brake. The operation status includes parameters such as the running speed and acceleration of the escalator brake, and these information are converted into electrical signals for output, and supplied to the terminal controller 1 for analysis and processing. The terminal controller 1 is used to summarize, store, and analyze the data monitored by the sensor assembly. Specifically, the terminal controller 1 includes a power supply module 6, an MCU board 7, an RS485 / TTL module 8, and an opto-isolation module 9. The MCU board 7 is also called a microcontroller unit board and has an STM32F407 chip. The power supply module 6 is connected to the MCU board 7, and the power supply module 6 provides power for the terminal controller 1. The RS485 / TTL module 8 is used for the conversion between 485 and TTL signals. The RS485 / TTL module 8 is connected to the MCU board 7, and the infrared thermal imaging sensor 3 is connected to the MCU board 7 through the RS485 / TTL module 8, so as to perform data transmission and data interaction. The opto-isolation module 9 is connected to the MCU board 7, and the microswitch sensor 4 is connected to the MCU board 7 through the opto-isolation module 9. Under the action of the opto-isolation module 9, it is convenient for the MCU board 7 to judge the brake engagement and release actions of the brake. The opto-isolation module 9 preferably uses an optoelectronic coupling element. In addition, the rotary encoder 5 is directly connected to the MCU board 7 and can perform data transmission and data interaction. The human-machine interaction device 2 is used to receive the escalator operation data processed by the terminal controller 1, display the fault code and operation and maintenance interaction information. Specifically, the human-machine interaction device 2 includes a display screen. The display screen is arranged in the monitoring room, and a visual user interface is provided through the display screen, which is convenient for the operation and maintenance personnel to observe the operation status of the escalator in real time.Therefore, through the above intelligent monitoring system, the accurate monitoring of the escalator brake status can be achieved without manual operation, reducing the risk of interference and damage to the brake.

[0027] In a specific embodiment, the sensor assembly further includes a noise sensor 10. The noise sensor 10 is disposed on the escalator machine room truss. The noise sensor 10 adopts the XM8765 model and directionally collects the machine room noise through a capacitive microphone, which is used to detect abnormal noise caused by brake shoe wear or abnormal vibration. Based on the fault diagnosis model of the vibration noise signal, signal data preprocessing is performed. Finally, the processed noise signal is subjected to fault diagnosis, and by designing an alarm threshold, the monitoring and early warning of braking noise are realized. More specifically, the noise sensor 10 is connected to the MCU board 7 through the RS485 / TTL module 8, so as to perform data transmission and data interaction.

[0028] In a specific embodiment, the sensor assembly further includes an AC current transmitter 11, and the AC current transmitter 11 is used to monitor the output current of the escalator motor. The sensor assembly further includes a DC voltage and current sensor 12, and the DC voltage and current sensor 12 monitors the voltage and current on the brake circuit. More specifically, both the AC current transmitter 11 and the DC voltage and current sensor 12 are connected to the RS485 / TTL module 8 through the A / D acquisition module 13. The 8-channel A / D processing module is used to receive, collect and process the analog quantities measured by the AC current transmitter 11 and the DC voltage and current sensor 12, so as to realize the data transmission and data interaction between the AC current transmitter 11, the DC voltage and current sensor 12 and the MCU board 7.

[0029] In a specific embodiment, the terminal controller 1 further includes a relay module 14. The relay module 14 is connected to the MCU board 7. The relay module 14 serves as an output execution unit and is connected in series in the safety circuit. When a fault shutdown signal is output, the safety circuit is automatically disconnected and the system is powered off to enter a safe state.

[0030] In a specific embodiment, the human-computer interaction device 2 further includes a building system server, which is connected to the display screen. More specifically, the building system server includes hardware devices, an operating system, building management software, a database, and backup and redundancy devices. The hardware devices include a server host, a processor, a memory, a hard disk, and a network interface, so as to provide computing and storage capabilities. The building management software is specific software installed on the server, providing functions such as real-time data monitoring, alarm processing, and device control. The database is used to store the data collected by the building system server, and the data includes sensor data and device status. The backup and redundancy devices are for ensuring the reliability and fault tolerance of the server to prevent system interruption caused by a single point of failure. In the present utility model, the building system server uses the MySQL database and the C# language to dock the front-end and background programs of the escalator monitoring platform. It can not only receive the data actively reported by the terminal, store it in the database, analyze the data, analyze the brake braking conditions under different working conditions in combination with the model of AI simulation training, display various real-time operation data of the escalator on the web page and the pop-up alarm function, but also can more accurately predict the remaining service life of the brake, thereby calculating the possible faults of the brake and giving an early warning before the faults occur. This enables maintenance personnel to perform maintenance in advance according to the prediction results and avoid accidents caused by brake failures.

[0031] In a specific embodiment, the connection mode between the terminal controller 1 and the human-computer interaction device 2 can be through a wired network or wireless communication technology. However, since the control cabinet of the escalator is generally placed inside the machine room truss, there are objective difficulties in wiring when using a wired network on the escalator. Therefore, the present utility model preferably uses wireless communication technology. More specifically, the terminal controller 1 is connected to the human-computer interaction device 2 through a LoRa module 15, and data interaction and transmission between the terminal controller 1 and the human-computer interaction device 2 are realized through the LoRa method.

[0032] The present utility model also provides an escalator, including the intelligent monitoring system for the escalator, and further including a walkway, a driving device, and handrails. The intelligent monitoring system is mainly used to monitor the operating state of the driving device of the escalator. By real-time monitoring of the operating state of the escalator, the safety performance of the escalator is improved. It should be noted that the walkway, the driving device, and the handrails belong to the prior art in this field, so they will not be described in detail in this article.

[0033] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Therefore, any modification, equivalent change, and modification made to the above embodiments according to the technical essence of the present utility model without departing from the content of the technical solution of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. An intelligent monitoring system for escalators, characterized in that: include: A sensor assembly, wherein the sensor assembly includes an infrared thermal imaging sensor, a micro switch sensor and a rotary encoder, wherein the infrared thermal imaging sensor is arranged on the truss of the escalator machine room, the micro switch sensor is arranged on the brake, and the rotary encoder is arranged on the driving wheel; A terminal controller, the terminal controller includes a power module, an MCU board, an RS485 / TTL module and an optocoupler isolation module, and is used to summarize, store and analyze the data monitored by the sensor assembly, wherein the power module is connected to the MCU board, the RS485 / TTL module is connected to the MCU board, and the optocoupler isolation module is connected to the MCU board; A human-computer interaction device includes a display screen and is used to receive escalator operation data processed by the terminal controller, wherein the display screen is arranged in a monitoring room.

2. The intelligent monitoring system for escalators according to claim 1 is characterized in that the sensor assembly also includes a noise sensor, and the noise sensor is arranged on the truss of the escalator machine room.

3. The intelligent monitoring system for escalators according to claim 1 is characterized in that the sensor component also includes an AC current transmitter, and the AC current transmitter is used to monitor the output current of the escalator motor.

4. The intelligent monitoring system for escalators according to claim 3 is characterized in that the sensor component also includes a DC voltage and current sensor, which monitors the voltage and current on the brake circuit.

5. The intelligent monitoring system for escalators according to claim 4, characterized in that: The AC current transmitter and the DC voltage and current sensor are both connected to the RS485 / TTL module via an A\D acquisition module.

6. The intelligent monitoring system for escalators according to claim 1, characterized in that: The terminal controller also includes a relay module, and the relay module is connected to the MCU board.

7. The intelligent monitoring system for escalators according to claim 1, characterized in that: The human-computer interaction device also includes a building system server, and the building system server is connected to the display screen.

8. The intelligent monitoring system for escalators according to claim 7, characterized in that: The terminal controller is connected to the human-computer interaction device via a LoRa module.

9. An escalator, characterized in that: The intelligent monitoring system for an escalator comprises the intelligent monitoring system for an escalator as described in any one of claims 1 to 8, and also comprises a walkway, a driving device and a handrail.

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