Construction personnel safety protection device based on machine vision and radar technology

Abstract

The utility model belongs to the technical field of railways, particularly relates to a constructor safety protection device based on machine vision and radar technology, and aims to solve the problems of potential safety hazards caused by dependence on personnel reliability in the traditional protection technology and double technical defects of early warning lag in a complex environment caused by limitation of human eye observation and response speed. The system comprises a main station monitoring device and an auxiliary station alarm device. The master station monitoring equipment comprises a visual detection unit and a radar detection unit which are installed on a monitoring point position, the visual detection unit is an image sensor with a vehicle identification function, and the radar detection unit is a radar sensor; the auxiliary station alarm device comprises an alarm unit installed on a construction point position, the main station monitoring device and the auxiliary station alarm device establish communication connection through a data communication transmission unit, and the alarm unit is used for giving an alarm according to data monitored by the image sensor and the radar sensor. According to the utility model, potential safety hazards of personnel are eliminated, and the accuracy of early warning is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to railway technical field, concretely relates to a construction personnel safety protection device based on machine vision and radar technique. BACKGROUND

[0002] In the field of railway construction safety protection, the traditional technology mainly relies on artificial protection system, that is, setting up station liaison officers in the station, configuring protection officers at the remote and near ends of the construction site, and realizing train approaching early warning and construction area protection through manual operation. However, this mode has significant defects: first, its protection effectiveness is highly dependent on the professionalism and working state of personnel. Once the protection officer is off duty, distracted or misses information, the construction personnel will be directly exposed to the threat of high-speed trains, and the safety risk is great; second, artificial protection is limited by the observation range and reaction speed of the human eye, especially in complex terrain such as curves and tunnels or in adverse weather conditions, it is difficult to discover and transmit train approaching information in time, resulting in delayed warning and increased safety risk.

[0003] Based on this, the utility model provides a construction personnel safety protection device based on machine vision and radar technology. CONTENT OF UTILITY MODEL

[0004] In order to solve the above problems in the prior art, that is, the dual technical defects of the traditional railway construction safety protection technology, that is, the high dependence on personnel reliability leads to safety hazards, and the observation and reaction speed of the human eye is limited, causing delayed warning in complex environments, the utility model provides a construction personnel safety protection device based on machine vision and radar technology, which comprises a master station monitoring device and a vice station alarm device;

[0005] The master station monitoring device comprises a visual detection unit and a radar detection unit installed on the monitoring point, the visual detection unit is an image sensor with vehicle recognition function, and the radar detection unit is a radar sensor;

[0006] The vice station alarm device comprises an alarm unit installed on the construction point, the master station monitoring device and the vice station alarm device are connected through a data communication transmission unit, and the alarm unit is used for alarming according to the data monitored by the image sensor and the radar sensor.

[0007] Further, the master station monitoring device comprises a first central processing unit and a first data communication transmission unit;

[0008] Both the image sensor and the radar sensor are electrically connected to the first central processing unit, and the first central processing unit is electrically connected to the first data communication transmission unit. The first central processing unit is used to acquire the data detected by the image sensor and the radar sensor, generate an alarm signal, and send it to the substation alarm device based on the first data communication transmission unit.

[0009] Furthermore, the secondary station alarm device includes a second central processing unit and a second data communication transmission unit;

[0010] The first data communication transmission unit is installed at the construction site and is electrically connected to the second data communication transmission unit. The second data communication transmission unit is electrically connected to the second central processing unit. The second central processing unit is electrically connected to the alarm unit. The second central processing unit is used to receive the alarm signal and send it to the alarm unit.

[0011] Furthermore, a first data format conversion unit is electrically connected between the first central processing unit and the first data communication transmission unit. The first format conversion unit is used to convert the alarm signal into the format required by the substation alarm device.

[0012] Furthermore, a second data format conversion unit is electrically connected between the second central processing unit and the second data communication transmission unit. The second data format conversion unit is used to convert the received alarm signal into the format required by the alarm unit.

[0013] Furthermore, both the main station monitoring equipment and the secondary station alarm equipment include a power management system, which includes a power management unit, a battery, and a step-down unit.

[0014] The power management unit is electrically connected to the buck unit, and the buck unit is electrically connected to the first central processing unit and the second central processing unit.

[0015] The power management unit is also electrically connected to the battery and the radar sensor.

[0016] Furthermore, the battery is electrically connected to the power display unit.

[0017] Furthermore, the unit management unit in the secondary station alarm device is electrically connected to the alarm power control unit, and the alarm power control unit is electrically connected to the second central processing unit and the alarm unit.

[0018] Furthermore, the first central processing unit is also electrically connected to a tilt sensor, which is used to detect the vehicle's tilt information and send a tilt signal;

[0019] The first central processing unit is also electrically connected to an attitude alarm unit, which is used to issue an attitude tilt alarm.

[0020] Furthermore, the first central processing unit and the second central processing unit are respectively connected to two different network alarm units. When the connection between the first data communication transmission unit and the second data communication transmission unit is abnormal, a network abnormality alarm signal is issued.

[0021] The beneficial effects of this utility model are:

[0022] Eliminating safety hazards caused by human factors: By automatically identifying the train's operating status through machine vision and radar detection units, the absolute dependence on the working status of human safety personnel is eliminated, effectively avoiding safety protection failures caused by absenteeism, distraction, or information omissions, and significantly improving the reliability of safety protection in railway construction areas.

[0023] Breaking through the bottleneck of complex environment monitoring: Integrating visual detection and radar sensing technologies, it can realize all-weather, multi-scenario train proximity monitoring, overcome the blind spots and reaction delays of human eye observation in curves, tunnels and bad weather, and ensure that train dynamics can be quickly captured and timely warnings can be issued under complex terrain and weather conditions.

[0024] Enhance the real-time performance and accuracy of early warnings: Based on the multi-sensor collaborative detection of the main station monitoring equipment, combined with the linkage mechanism between the data communication transmission unit and the auxiliary station alarm equipment, the train position and speed information can be analyzed simultaneously and accurate alarms can be triggered, which can significantly shorten the early warning response time and reduce the probability of construction personnel being exposed to the risks of train operation. Attached Figure Description

[0025] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0026] Figure 1 This is a schematic diagram of the connection relationship of the main station monitoring equipment of a construction worker safety protection device based on machine vision and radar technology according to this utility model;

[0027] Figure 2 This is a schematic diagram of the connection relationship of the auxiliary station alarm equipment of a construction worker safety protection device based on machine vision and radar technology according to this utility model. Detailed Implementation

[0028] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] like Figures 1-2 As shown, this utility model provides a safety protection device for construction workers based on machine vision and radar technology. The device includes a main station monitoring device and a secondary station alarm device.

[0031] The main station monitoring equipment includes a visual detection unit and a radar detection unit installed at the monitoring point. The visual detection unit is an image sensor with vehicle recognition function, and the radar detection unit is a radar sensor.

[0032] The auxiliary station alarm device includes an alarm unit installed at the construction site. The main station monitoring device and the auxiliary station alarm device establish a communication connection through a data communication transmission unit. The alarm unit is used to trigger an alarm based on the data monitored by the image sensor and the radar sensor.

[0033] In this embodiment, the image sensor is preferably a CMOS sensor.

[0034] The monitoring points are arranged along the track, and the image sensor adopts image vision detection technology. It calculates detection parameters through an intelligent image recognition algorithm based on real-time uniform speed and high precision image feature detection, and collects and analyzes vehicle passage information in real time.

[0035] The radar sensor is mounted next to the vision detection unit. It detects and identifies vehicles on the track using radar and performs data correction with the detection results of the vision detection unit to obtain accurate early warning results.

[0036] The early warning unit is located at the construction site and can be installed at multiple points. When an early warning message arrives, it can trigger sound and light alarms. It provides early warning to construction workers through audible and visual alarms, and also has data forwarding capabilities, enabling unified early warning and protection during large-scale, long-distance construction.

[0037] The main station monitoring equipment in this embodiment also includes a data transfer unit, which can store the collected and detected information and enable remote download and viewing of the data.

[0038] See Figure 1 The main station monitoring equipment in this embodiment includes a first central processing unit and a first data communication transmission unit;

[0039] Both the image sensor and the radar sensor are electrically connected to the first central processing unit, and the first central processing unit is electrically connected to the first data communication transmission unit. The first central processing unit is used to acquire the data detected by the image sensor and the radar sensor, generate an alarm signal, and send it to the substation alarm device based on the first data communication transmission unit.

[0040] A first data format conversion unit is electrically connected between the first central processing unit and the first data communication transmission unit. The first format conversion unit is used to convert the alarm signal into the format required by the substation alarm device.

[0041] Both the image sensor and the radar sensor are electrically connected to the first central processing unit, specifically:

[0042] The image sensor is connected to the first central processing unit via USB, and the radar sensor is connected to the first central processing unit via a USB to RS232 module.

[0043] See Figure 2 The auxiliary station alarm device includes a second central processing unit and a second data communication transmission unit;

[0044] The first data communication transmission unit is installed at the construction site and is electrically connected to the second data communication transmission unit. The second data communication transmission unit is electrically connected to the second central processing unit. The second central processing unit is electrically connected to the alarm unit. The second central processing unit is used to receive the alarm signal and send it to the alarm unit.

[0045] A second data format conversion unit is electrically connected between the second central processing unit and the second data communication transmission unit. The second data format conversion unit is used to convert the received alarm signal into the format required by the alarm unit.

[0046] Both the first central processing unit and the second central processing unit use Linux-based embedded central processing units.

[0047] The first data communication transmission unit and the second data communication transmission unit are located at the monitoring point and the construction point, respectively. They achieve stable transmission and reception of long-distance early warning information through 900MHz wireless transmission technology. They have the characteristics of low power consumption, fast response, stable signal, and adaptability to data transmission, ensuring range early warning in long-distance construction environments.

[0048] The antenna is 2 meters high.

[0049] See Figure 1 and Figure 2In this embodiment, both the main station monitoring device and the secondary station alarm device include a power management system, which includes a power management unit, a battery, and a step-down unit.

[0050] The power management unit is electrically connected to the buck unit, and the buck unit is electrically connected to the first central processing unit and the second central processing unit.

[0051] The power management unit is also electrically connected to the battery and the radar sensor.

[0052] The power management unit is connected to the power switch, which is used to turn the power on and off.

[0053] The step-down unit is electrically connected to the first central processing unit and the second central processing unit. Specifically:

[0054] The step-down unit in the main station monitoring equipment is connected to the first central processing unit, and the alarm equipment in the secondary station is connected to the second central processing unit.

[0055] The battery is a 12V / 8AH battery, and the step-down unit is used to convert the 12V voltage to 5V.

[0056] The battery is electrically connected to the power display unit to display the battery level. The battery is removable and can be easily replaced.

[0057] The battery may also be a rechargeable battery, but this utility model does not make any specific limitation here.

[0058] See Figure 2 In this embodiment, the unit management unit in the secondary station alarm device is electrically connected to the alarm power control unit, and the alarm power control unit is electrically connected to the second central processing unit and the alarm unit.

[0059] The second central processing unit is connected to the alarm deactivation unit, and the alarm deactivation unit is a button-operated unit for user convenience.

[0060] The first central processing unit is also electrically connected to a tilt sensor, which is used to detect the vehicle's tilt information and send a tilt signal;

[0061] The first central processing unit is also electrically connected to an attitude alarm unit, which is used to issue an attitude tilt alarm.

[0062] This embodiment uses a MEMS triaxial tilt sensor (range ±90°, accuracy 0.01°) to continuously collect the tilt angles of the vehicle's X / Y / Z axes; dynamically detects the real-time attitude parameters of the construction vehicle in complex terrain (such as slopes and soft soil sections), and triggers an early warning when the lateral tilt angle is >5° or the longitudinal pitch angle is >8°.

[0063] This invention solves the monitoring blind spots of image sensors in low light and rainy / foggy weather, and overcomes the detection errors of radar on non-rigid objects (such as soft soil).

[0064] The first central processing unit is connected to the power control unit, and the power control unit is connected to the angle reference laser.

[0065] The power control unit connects to the first central processing unit and the angle reference laser, and is responsible for managing the laser's power supply. This includes turning the laser on or off according to instructions from the central processing unit, and adjusting the laser power to extend its lifespan. Furthermore, the power control unit has overload protection and voltage stabilization functions to ensure reliable operation of the laser equipment under complex conditions.

[0066] Among them, the angle reference laser provides an external absolute angle reference, which is installed at the monitoring point.

[0067] In this embodiment, the first central processing unit and the second central processing unit are respectively connected to two different network alarm units. When the connection between the first data communication transmission unit and the second data communication transmission unit is abnormal, a network abnormality alarm signal is issued.

[0068] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0069] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0070] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0071] The technical solution of this utility model has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A construction worker safety protection device based on machine vision and radar technology, characterized in that, The device comprises a main station monitoring device and a secondary station alarm device; The main station monitoring device comprises a visual detection unit and a radar detection unit installed at a monitoring point, the visual detection unit is an image sensor with vehicle identification function, and the radar detection unit is a radar sensor; The secondary station alarm device comprises an alarm unit installed at a construction point, the main station monitoring device and the secondary station alarm device are connected through a data communication transmission unit, and the alarm unit is used for alarming according to the data monitored by the image sensor and the radar sensor.

2. A construction worker safety protection device based on machine vision and radar technology according to claim 1, characterized in that, The main station monitoring device comprises a first central processing unit and a first data communication transmission unit; The image sensor and the radar sensor are electrically connected with the first central processing unit, the first central processing unit is electrically connected with the first data communication transmission unit, the first central processing unit is used for acquiring the data detected by the image sensor and the radar sensor, generating an alarm signal, and sending the alarm signal to the secondary station alarm device based on the first data communication transmission unit.

3. A construction worker safety protection device based on machine vision and radar technology according to claim 2, characterized in that, The secondary station alarm device comprises a second central processing unit and a second data communication transmission unit; The first data communication transmission unit is installed at a construction point and is electrically connected with the second data communication transmission unit, the second data communication transmission unit is electrically connected with the second central processing unit, the second central processing unit is electrically connected with the alarm unit, and the second central processing unit is used for receiving the alarm signal and sending the alarm signal to the alarm unit.

4. The construction worker safety protection device based on machine vision and radar technology according to claim 2, characterized in that, A first data format conversion unit is electrically connected between the first central processing unit and the first data communication transmission unit, and the first data format conversion unit is used for converting the alarm signal into a format required by the secondary station alarm device.

5. The construction worker safety protection device based on machine vision and radar technology according to claim 3, characterized in that, A second data format conversion unit is electrically connected between the second central processing unit and the second data communication transmission unit, and the second data format conversion unit is used for converting the received alarm signal into a format required by the alarm unit.

6. The construction worker safety protection device based on machine vision and radar technology according to claim 3, characterized in that, The main station monitoring device and the secondary station alarm device each comprise a power management system, the power management system comprises a power management unit, a battery and a voltage reduction unit; The power management unit is electrically connected with the voltage reduction unit, and the voltage reduction unit is electrically connected with the first central processing unit and the second central processing unit; The power management unit is also electrically connected with the battery and the radar sensor.

7. A construction worker safety protection device based on machine vision and radar technology according to claim 6, characterized in that, The battery is electrically connected with a power display unit.

8. The construction worker safety protection device based on machine vision and radar technology according to claim 6, characterized in that, A unit management unit in the secondary station alarm device is electrically connected with an alarm power control unit, the alarm power control unit is electrically connected with the second central processing unit and the alarm unit.

9. The construction worker safety protection device based on machine vision and radar technology according to claim 2, characterized in that, The first central processing unit is also electrically connected with an inclination sensor, the inclination sensor is used for detecting inclination information of a vehicle and sending an inclination signal; The first central processing unit is also electrically connected with a posture alarm unit, and the posture alarm unit is used for sending a posture inclination alarm.

10. The construction worker safety protection device based on machine vision and radar technology according to claim 3, characterized in that, The first central processing unit and the second central processing unit are connected with two different network alarm units respectively, and network abnormal alarm signals are sent when the first data communication transmission unit and the second data communication transmission unit are connected abnormally.

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