Escalator safety detection device

Abstract

The utility model relates to the technical field of escalator safety detection, in particular to an escalator safety detection device which comprises an escalator main body, a second detection device is arranged at the other end of the escalator main body, the first detection device and the second detection device comprise mounting columns which are symmetrically arranged, and a binocular camera is arranged at the top end of one mounting column. An infrared TOF sensor is arranged on one side of the binocular camera, a warning broadcasting assembly is arranged on one side of the laser projection, an infrared light curtain array is arranged on the first detection device, the escalator body comprises a supporting structure, a stair system, a guide rail system and an electric control system, an edge pressure sensor is arranged on the stair system, an edge vibration sensor is arranged on the supporting structure, and a laser light source is arranged on the guide rail system. By means of the structure of the mounting column, the binocular camera and the infrared TOF sensor, the problems that an existing escalator safety system always focuses on monitoring and early warning on mechanical faults and electrical faults of an escalator and is insufficient in passenger behavior monitoring and control capacity are solved.

Description

Technical Field

[0001] This utility model relates to the field of escalator safety testing technology, specifically to a safety testing device for electric escalators. Background Technology

[0002] Escalators, an indispensable mode of transportation in modern urban life, are increasingly prevalent in public places such as shopping malls, airports, and subway stations, providing great convenience for people's travel. However, with the widespread use of escalators, their safety issues have gradually become prominent, becoming a focus of attention for all sectors of society. Although escalators have taken various safety measures into account in their design, some potential defects and risks still exist in actual operation. One of the most prominent problems is the insufficient monitoring and control capabilities of escalators for passenger behavior. Many passengers, especially children and those lacking safety awareness, often engage in dangerous behaviors while riding escalators, such as running, jumping, and walking in the wrong direction. These behaviors can easily lead to falls, injuries, and other safety accidents. Existing escalator safety systems often focus on monitoring and warning of mechanical and electrical faults in the escalator itself, but lack effective identification and response measures for safety risks caused by passenger behavior. Although some escalators are equipped with safety facilities such as emergency stop buttons and anti-slip devices, in actual situations, these facilities are often difficult to trigger in a timely manner or function effectively.

[0003] Existing escalator safety systems often focus on monitoring and warning of mechanical and electrical faults in the escalator itself, but lack the ability to monitor and control passenger behavior.

[0004] Therefore, it is particularly important to design a safety detection device for escalators to overcome the above-mentioned technical defects and improve overall practicality. Utility Model Content

[0005] The purpose of this invention is to provide a safety detection device for escalators to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An escalator safety detection device includes an escalator body, a first detection device at one end of the escalator body, and a second detection device at the other end of the escalator body. The first and second detection devices include symmetrically arranged mounting columns. A binocular camera is mounted at the top of one of the mounting columns, and an infrared TOF sensor is mounted on one side of the binocular camera. A laser projector is mounted near the top of the mounting column, and a warning broadcast component is mounted on one side of the laser projector. An infrared light curtain array is mounted on the first detection device. The escalator body includes a support structure, a step system, a guide rail system, a handrail system, a handrail device, a safety protection system, and an electrical control system. An edge pressure sensor is mounted on the step system, and an edge vibration sensor is mounted on the support structure.

[0008] As a preferred embodiment of this utility model, the edge pressure sensor is a piezoelectric thin film sensor, and is evenly distributed along both sides of the edge of the ladder system, covering 80%-90% of the total length of the ladder. The surface of the edge pressure sensor is provided with a wear-resistant insulating coating.

[0009] As a preferred embodiment of this utility model, the edge vibration sensor is a triaxial MEMS accelerometer, which is fixed at the truss connection of the support structure and the docking node of the guide rail system, and is used to monitor abnormal vibration of the escalator body.

[0010] As a preferred embodiment of this utility model, the data output terminals of the binocular camera and the infrared TOF sensor are connected to the edge computing unit. The edge computing unit has a built-in multi-source data fusion algorithm, which includes a deep information fusion module based on Kalman filtering and a behavior recognition module. The behavior recognition module detects passenger falls, wrong-way walking, or children being alone using the YOLOv5s model. The edge computing unit is connected to the cloud server via a 5G module. The electrical control system has a main control module, and the edge computing unit is connected to the main control module via a CAN bus.

[0011] As a preferred embodiment of this utility model, the first detection device and the second detection device are connected via a dual-channel industrial Ethernet and CAN bus, and the infrared light curtain array includes two sets of through-beam infrared beams, which are used to detect children entering the escalator area alone and to count passenger flow density.

[0012] As a preferred embodiment of this utility model, the warning broadcast component includes a directional sound wave speaker and a strobe LED light strip. The strobe LED light strip is installed on the side of the handrail device. The trigger signals of the directional sound wave speaker and the strobe LED light strip are synchronously controlled by the edge computing unit according to the behavior recognition results. The directional sound wave speaker is installed inside the mounting column.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model utilizes a structure consisting of a mounting column, a binocular camera, an infrared TOF sensor, a laser projection, a warning broadcast component, and an infrared light curtain array to install an escalator safety detection device. This device monitors passenger weight in real time via edge pressure sensors on both sides of the step system, and collects vibration data via edge vibration sensors on the supporting structure. The binocular camera and infrared sensor of the first and second detection devices simultaneously capture passenger behavior and depth information. This information is processed by a multi-source data fusion algorithm of the edge computing unit, combined with Kalman-filtered 3D point cloud and model behavior recognition, to determine the risks of falls, reverse travel, and children being alone. Upon detecting abnormalities or excessive step pressure, the main control module is instructed via a bus to trigger the safety protection system. This system provides warnings via laser projection, directional sound wave speakers, and flashing light strips, and adjusts the escalator speed or brakes according to the risk. This solves the problem that existing escalator safety systems often focus on monitoring and warning of mechanical and electrical faults in the escalator itself, lacking sufficient monitoring and control capabilities for passenger behavior. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the entire utility model;

[0016] Figure 2 This is a schematic diagram of the overall modular structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the mounting column of this utility model.

[0018] In the diagram: 1. Escalator main body; 101. Support structure; 1011. Edge vibration sensor; 102. Step system; 1021. Edge pressure sensor; 103. Guide rail system; 104. Handrail system; 105. Handrail device; 106. Safety protection system; 107. Electrical control system; 2. First detection device; 3. Second detection device; 4. Mounting column; 401. Binocular camera; 402. Infrared TOF sensor; 403. Laser projection; 404. Warning broadcast component; 405. Infrared light curtain array. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are provided. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0021] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] For examples, please refer to Figure 1-3 This utility model provides a technical solution:

[0024] An escalator safety detection device includes an escalator body 1, a first detection device 2 at one end of the escalator body 1, and a second detection device 3 at the other end of the escalator body 1. The first detection device 2 and the second detection device 3 include symmetrically arranged mounting columns 4. A binocular camera 401 is mounted at the top of one of the mounting columns 4, an infrared TOF sensor 402 is mounted on one side of the binocular camera 401, a laser projector 403 is mounted near the top of the mounting column 4, and a warning broadcast component 404 is mounted on one side of the laser projector 403. An infrared light curtain array 4 is mounted on the first detection device 2. 05. The escalator body 1 includes a support structure 101, a step system 102, a guide rail system 103, a handrail belt system 104, a handrail device 105, a safety protection system 106, and an electrical control system 107. An edge pressure sensor 1021 is installed on the step system 102, and an edge vibration sensor 1011 is installed on the support structure 101. During the operation of the escalator safety detection device, the edge pressure sensors 1021 distributed on both sides of the step system 102 monitor the passenger weight distribution in real time, while the edge vibration sensors 1011 on the support structure 101... The system collects mechanical vibration spectrum data of the escalator. The binocular camera 401 of the first detection device 2 and the second detection device 3, along with the infrared TOF sensor 402, simultaneously capture passenger behavior and depth information. After processing by the multi-source data fusion algorithm of the edge computing unit, combined with the 3D point cloud data optimized by Kalman filtering and the behavior recognition results of the YOLOv5s model, it determines whether there is a risk of falling, going against the flow, or children being alone. If abnormal behavior or excessive step pressure is detected, the edge computing unit sends a command to the main control module via the CAN bus to trigger the safety protection system 106 to respond. First, a warning sign is projected on the ground by the laser projection 403, while a directional sound wave speaker plays a voice reminder. The flashing LED light strip emits a visual alarm. At the same time, the escalator is controlled to slow down or brake in an emergency according to the risk level. The infrared light curtain array 405 monitors children entering alone and passenger flow in real time according to the different heights of the two sets of light curtains. The data is transmitted to the main control module via industrial Ethernet and CAN bus dual channels for dynamically adjusting the escalator operation strategy. All sensor data and event logs are uploaded to the cloud server via the 5G module for remote operation and maintenance analysis and algorithm model iteration updates.

[0025] The edge pressure sensor 1021 is a piezoelectric thin film sensor, evenly distributed along both sides of the steps of the escalator system 102, covering 80%-90% of the total length of the steps. The surface of the edge pressure sensor 1021 is coated with a wear-resistant insulating layer, comprehensively monitoring the distribution of passengers on the steps and improving the accuracy of safety detection. The edge vibration sensor 1011 is a triaxial MEMS accelerometer, fixed to the truss connection of the support structure 101 and the docking node of the guide rail system 103, used to monitor abnormal vibrations of the escalator body 1, promptly identifying potential safety hazards. The data output terminals of the binocular camera 401 and the infrared TOF sensor 402 are connected to the edge computing unit. The edge computing unit has a built-in multi-source data fusion algorithm, including a Kalman filter-based deep information fusion module and a behavior recognition module. The behavior recognition module uses a YOLOv5s model to detect passenger falls, wrong-way movement, or children being alone. The edge computing unit is connected to the cloud server via a 5G module. Electrical control... The system 107 is equipped with a main control module. The edge computing unit is connected to the main control module via a CAN bus. The behavior recognition module can accurately detect passenger falls, reverse movement, or children being alone, providing strong support for timely safety measures. The edge computing unit is connected to the cloud server via a 5G module, realizing remote data storage and analysis, which facilitates continuous monitoring and management of the escalator's safety status. The first detection device 2 and the second detection device 3 are connected via a dual-channel industrial Ethernet and CAN bus. The infrared light curtain array 405 contains two sets of through-beam infrared beams, which are used to detect children entering the escalator area alone and to count passenger flow density, respectively, enhancing the safety and management efficiency of the escalator. The warning broadcast component 404 includes a directional sound wave speaker and a strobe LED light strip. The strobe LED light strip is installed on the side of the handrail device 105. The trigger signals of the directional sound wave speaker and the strobe LED light strip are synchronously controlled by the edge computing unit according to the behavior recognition results. The directional sound wave speaker is set in the mounting column 4 to promptly remind passengers and staff to pay attention to safety.

[0026] The working process of this utility model is as follows: When using this type of escalator safety detection device, firstly, during the operation of the escalator safety detection device, the edge pressure sensors 1021 distributed on both sides of the step system 102 monitor the passenger weight distribution in real time. At the same time, the edge vibration sensors 1011 on the support structure 101 collect the mechanical vibration spectrum data of the escalator. The binocular cameras 401 of the first detection device 2 and the second detection device 3, along with the infrared TOF sensor 402, synchronously capture passenger behavior and depth information. After processing by the multi-source data fusion algorithm of the edge computing unit, combined with the 3D point cloud data optimized by Kalman filtering and the behavior recognition results of the YOLOv5s model, it is determined whether there is a risk of falling, going against the flow, or a child being alone. If the detection is successful... Upon detecting abnormal behavior or excessive step pressure, the edge computing unit sends a command to the main control module via the CAN bus, triggering the safety protection system 106 to respond. First, a warning sign is projected onto the ground via laser projection 403, while a directional sound wave speaker plays a voice reminder. A flashing LED light strip emits a visual alarm. Simultaneously, the escalator is slowed down or braked in an emergency according to the risk level. The infrared light curtain array 405 monitors children entering alone and passenger flow in real time, depending on the different heights of the two sets of light curtains. The data is transmitted to the main control module via industrial Ethernet and CAN bus dual channels for dynamically adjusting the escalator operation strategy. All sensor data and event logs are uploaded to the cloud server via the 5G module for remote operation and maintenance analysis and algorithm model iteration updates.

[0027] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The main body of the escalator is already a mature technology and equipment. The control method is to control it through an electrical control system. Its control circuit can be implemented by those skilled in the art and is common knowledge in the field. Therefore, this application will not explain the control method and circuit connection in detail.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An escalator safety detection device comprising an escalator body (1), characterized in that: One end of the escalator body (1) is provided with a first detection device (2), the other end of the escalator body (1) is provided with a second detection device (3), the first detection device (2), the second detection device (3) includes symmetrically arranged mounting column (4), one end of the mounting column (4) is provided with binocular camera (401), one side of the binocular camera (401) is provided with infrared TOF sensor (402), the near top of the mounting column (4) is provided with laser projection (403), one side of the laser projection (403) is provided with warning broadcast assembly (404), the first detection device (2) is provided with infrared light curtain array (405), the escalator body (1) includes support structure (101), step system (102), guide rail system (103), handrail belt system (104), handrail device (105), safety protection system (106), electrical control system (107), the step system (102) is provided with edge pressure sensor (1021), the support structure (101) is provided with edge vibration sensor (1011).

2. The escalator safety detection device according to claim 1, wherein: The edge pressure sensor (1021) is a piezoelectric film sensor, and is distributed along the edges of the two sides of the step system (102) at equal intervals, covering 80%-90% of the full length of the step, and the surface of the edge pressure sensor (1021) is provided with a wear-resistant insulating coating.

3. The escalator safety detection device of claim 1, wherein: The edge vibration sensor (1011) is a three-axis MEMS accelerometer, which is fixed to the truss connection of the support structure (101) and the butt joint node of the guide rail system (103), and is used for monitoring the abnormal vibration of the escalator body (1).

4. The escalator safety detection device of claim 1, wherein: The data output ends of the binocular camera (401) and the infrared TOF sensor (402) are connected to an edge computing unit, the edge computing unit is built-in multi-source data fusion algorithm, the multi-source data fusion algorithm includes a depth information fusion module based on Kalman filtering and a behavior recognition module, the behavior recognition module detects passenger falling, reverse or child alone behavior through a YOLOv5s model, the edge computing unit is connected with a cloud server through a 5G module, and a main control module is arranged in the electrical control system (107), and the edge computing unit is connected with the main control module through a CAN bus.

5. The escalator safety detection device of claim 1, wherein: The first detection device (2) and the second detection device (3) are connected through industrial Ethernet and CAN bus double channels, and the infrared light curtain array (405) includes two groups of infrared beams, which are used for detecting that a child alone enters the escalator area and counting passenger flow density.

6. A safety detection device for an escalator according to any one of claims 1-5, characterized in that: The warning broadcast assembly (404) includes a directional sound wave speaker and a stroboscopic LED light belt, the stroboscopic LED light belt is installed on the side of the handrail device (105), the trigger signals of the directional sound wave speaker and the stroboscopic LED light belt are synchronously controlled by the edge computing unit according to the behavior recognition result, and the directional sound wave speaker is arranged in the mounting column (4).

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