Safety helmet detection device and method

Abstract

The present invention discloses a helmet detection device and method, including a detection channel, a warning system is provided in the detection channel, a cooling area and a detection area are sequentially provided in the detection channel, an air cooling component is provided in the cooling area, a thermal camera and a light source camera are provided in the detection area, the thermal camera and the light source camera take pictures of the human head area at the same time, and the captured images are used to determine whether a helmet is worn through an image detection module. The light source camera and the thermal camera are set to take pictures and collect image information at the same time, and the different imaging modes of the two cameras are used to ensure the accuracy of image collection; and the images collected by the light source camera and the thermal camera are detected at the same time, that is, two identical detection paths, and the accuracy of the detection results is ensured through a double detection method.

Description

Technical Field

[0001] The present invention relates to the technical field of safety equipment detection, and more specifically, to a safety helmet detection device and method. Background Art

[0002] With the development of social economy, the construction industry is developing faster and faster. Correspondingly, the potential safety hazards brought by the construction industry are becoming more and more noticeable. There are many on-site operations in the construction site, which will inevitably bring some safety problems, such as falling objects from high altitudes. Operators and construction site workers urgently need some safety protection measures, such as wearing safety helmets, to effectively prevent safety accidents. Safety accidents occur repeatedly due to the low safety awareness of the staff or due to some external factors that cause the staff to enter the workplace without wearing safety helmets.

[0003] It can be seen that accurate detection of safety helmets can help to avoid safety accidents to a certain extent by reminding workers who are not wearing safety helmets to wear them. Existing safety helmet detection mostly uses a single ordinary light-sensitive camera to take pictures of the workers' heads. Due to the influence of lighting conditions and the camera's own functions, shooting errors are inevitable, which ultimately lead to incorrect detection results. Summary of the invention

[0004] The object of the present invention is to provide a helmet detection device and method, which can improve the accuracy of obtaining operator head image information and increase the accuracy of helmet detection, so as to solve the technical problems existing in the above-mentioned background technology.

[0005] The new technical solution of the present invention is a helmet detection device, including a detection channel, a warning system is provided in the detection channel, a cooling area and a detection area are sequentially arranged in the detection channel, an air cooling component is arranged in the cooling area, a thermal camera and a light source camera are arranged in the detection area, the thermal camera and the light source camera take pictures of the human head area at the same time, and the taken image is used to determine whether the helmet is worn through an image detection module.

[0006] In a preferred embodiment, the air cooling assembly includes an air cooler and an air guide hood fixedly connected to the air outlet of the air cooler, the air guide hood is provided with a sealing plate away from the air outlet, and the sealing plate is provided with a plurality of air cooling channels.

[0007] In a preferred embodiment, the light source camera and the thermal camera are rotatably fixed at the exit of the detection channel by a fixed bracket and are aligned with the inside of the detection channel. A rotating rod for controlling the rotation angle of the camera is connected to the fixed bracket.

[0008] In a preferred embodiment, the image detection module includes an information storage unit, a head detection unit, a helmet detection unit and a head-helmet combined state determination unit, and the head-helmet combined state determination unit transmits the detection signal to the warning system.

[0009] In a preferred embodiment, the warning system includes a main control unit, an access control unit and an alarm unit. The main control unit receives a detection signal from a human head and helmet joint status determination unit, and the access control unit and the alarm unit receive control signals from the main control unit respectively.

[0010] A safety helmet detection method, comprising:

[0011] Workers entering the safety passage will have their helmets cooled in the cooling area;

[0012] Use a light source camera and a thermal camera to obtain images of the head area of ​​the workers entering the inspection, and transmit the obtained image information to the image detection module at the same time;

[0013] The images taken by the light source camera and the thermal camera are respectively identified through two identical detection paths;

[0014] The two identical detection paths are: first, the head detection unit detects the captured image according to the head detection model to obtain the head area; then, the helmet detection unit detects the captured image according to the helmet position detection model to obtain the helmet area; finally, the head-helmet joint state determination unit obtains the head-helmet joint state according to the distance and overlapping area between the head area and the helmet area, and transmits the detection signal to the main control unit;

[0015] If the detection results of the two detection paths are both that a safety helmet is worn, the main control unit transmits a signal to the access control unit to control the door to open; if the detection results of the two detection paths are different, the main control unit transmits a signal to the alarm unit.

[0016] The beneficial effects of the technical solution of the present invention are:

[0017] 1. By setting the light source camera and the thermal camera to take pictures and collect image information at the same time, the accuracy of image acquisition is guaranteed by taking advantage of the different imaging methods of the two cameras; and the images collected by the light source camera and the thermal camera are detected at the same time, that is, two identical detection paths, and the accuracy of the detection results is guaranteed through the dual detection method.

[0018] 2. By setting up a cooling area in the detection channel, the temperature of the outer surface of the helmet is ensured to be lower than the human body temperature, which facilitates the clarity of the pictures taken by the photosensitive camera. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a side view of the overall structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of the air cooling component of the present invention.

[0021] Figure 3 This is a diagram for fixing the thermal camera and the light source camera of the present invention.

[0022] Figure 4 This is the structure diagram of the image detection module.

[0023] Explanation of the reference numerals: 1 detection channel, 2 cooling area, 3 detection area, 4 air cooling assembly, 5 air cooler, 6 air guide cover, 7 air cooling channel, 8 light source camera, 9 thermal camera, 10 fixed bracket, 11 rotating rod, 12 mounting plate, 13 channel door, 14 alarm. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0025] like Figure 1 As shown, the technical solution of the present invention is a helmet detection device, including a detection channel 1, a warning system is provided in the detection channel 1, a cooling area 2 and a detection area 3 are sequentially arranged in the detection channel 1, an air cooling component 4 is provided in the cooling area, and a thermal camera 9 and a light source camera 8 are provided in the detection area. The thermal camera 9 and the light source camera 8 take pictures of the human head area at the same time, and the captured image is used to determine whether a helmet is worn through an image detection module. The light source camera 8 is an ordinary camera that can take pictures under light, and the thermal camera 9 is an ultraviolet camera that recognizes the contour of the human body through ultraviolet rays. By setting the light source camera 8 and the thermal camera 9 to take pictures and collect image information at the same time, the accuracy of image collection is guaranteed by using the different imaging methods of the two cameras; and the images collected by the light source camera 8 and the thermal camera 9 are detected simultaneously, that is, two identical detection paths, and the accuracy of the detection results is guaranteed by a double detection method.

[0026] like Figure 2As shown, the air cooling component 4 includes an air cooler 5 and an air guide cover 6 fixedly connected to the air outlet of the air cooler 5. The air guide cover 6 is provided with a sealing plate away from the air outlet, and a plurality of air cooling channels 7 are provided on the sealing plate. The cold air blown out by the air cooler 5 is first gathered in the air guide cover 6 through the air guide cover 6, and then discharged through the air cooling channels 7 provided on the sealing plate, which makes the discharged cold air have a relatively high wind speed. When the worker enters the reduced area 2 where the air cooling component 4 is located, the cold air is blown onto the worker's helmet through the air cooling channels 7 to cool the helmet, thereby ensuring that when the worker enters the detection area 3, the external temperature of the helmet is lower than the human body temperature.

[0027] like Figure 3 As shown, the light source camera 8 and the thermal camera 9 are rotatably fixed at the exit of the detection channel 1 through a fixed bracket 10, and the fixed bracket 10 is fixed on the mounting plate 12 on the top of the detection door and is aligned with the inside of the detection channel 1. A rotating rod 11 for controlling the rotation angle of the camera is connected to the fixed bracket 10. One end of the rotating rod 11 is rotatably connected to the fixed bracket 10, and the other end is rotatably fixed to the detection channel 1. The rotating rod 11 can be extended and retracted, and the fixed bracket 10 is rotated by extension and retraction, thereby adjusting the tilt angle of the camera.

[0028] like Figure 4 As shown, the image detection module includes an information storage unit, a head detection unit, a helmet detection unit and a head-helmet joint state determination unit, and the head-helmet joint state determination unit transmits the detection signal to the warning system. The warning system includes a main control unit, an access control unit and an alarm unit. The main control unit receives the detection signal of the head-helmet joint state determination unit, and the access control unit and the alarm unit receive the control signal of the main control unit respectively. The main control unit detects the signal through the head-helmet joint state determination unit. If the result is passed, the detection signal is transmitted to the access control unit to control the channel door 13 to open. If it fails to pass the inspection, the detection signal is transmitted to the alarm unit, and the alarm 14 alarms, prompting that the helmet is not worn. .

[0029] A safety helmet detection method, comprising:

[0030] The workers entering the safety passage will have their helmets cooled down in the cooling area 2;

[0031] The light source camera 8 and the thermal camera 9 are used to obtain images of the head area of ​​the workers entering the inspection, and the obtained image information is simultaneously transmitted to the image detection module;

[0032] The images captured by the light source camera 8 and the thermal camera 9 are respectively identified through two identical detection paths;

[0033] The two identical detection paths are: first, the head detection unit detects the captured image according to the head detection model to obtain the head area; then, the helmet detection unit detects the captured image according to the helmet position detection model to obtain the helmet area; finally, the head-helmet joint state determination unit obtains the head-helmet joint state according to the distance and overlapping area between the head area and the helmet area, and transmits the detection signal to the main control unit;

[0034] If the detection results of the two detection paths are both that a safety helmet is worn, the main control unit transmits a signal to the access control unit to control the door to open; if the detection results of the two detection paths are different, the main control unit transmits a signal to the alarm unit.

[0035] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A helmet detection device, comprising a detection channel, wherein a warning system is provided in the detection channel, characterized in that: A cooling area and a detection area are sequentially arranged in the detection channel, an air cooling component is arranged in the cooling area, and a thermal camera and a light source camera are arranged in the detection area. The thermal camera and the light source camera take pictures of the human head area at the same time, and the taken image is used to determine whether a safety helmet is worn through an image detection module; when a worker enters the cooling area where the air cooling component is located, cold air is blown onto the worker's safety helmet through the air cooling channel to cool the safety helmet, thereby ensuring that the external temperature of the safety helmet is lower than the human body temperature when the worker enters the detection area.

2. A safety helmet detection device according to claim 1, characterized in that: The air cooling assembly includes an air cooler and an air guide hood fixedly connected to the air outlet of the air cooler. A sealing plate is arranged on the side of the air guide hood away from the air outlet, and a plurality of air cooling channels are arranged on the sealing plate.

3. A safety helmet detection device according to claim 1, characterized in that: The light source camera and the thermal camera are rotatably fixed at the exit of the detection channel through a fixed bracket and are aligned with the inside of the detection channel. A rotating rod for controlling the rotation angle of the camera is connected to the fixed bracket.

4. A safety helmet detection device according to claim 1, characterized in that: The image detection module includes an information storage unit, a head detection unit, a helmet detection unit and a head-helmet combined state determination unit, and the head-helmet combined state determination unit transmits a detection signal to a warning system.

5. A safety helmet detection device according to claim 1, characterized in that: The warning system includes a main control unit, an access control unit and an alarm unit. The main control unit receives a detection signal from a human head and helmet combined state determination unit, and the access control unit and the alarm unit receive control signals from the main control unit respectively.

6. The helmet detection method according to any one of claims 1 to 5, characterized in that: include: Workers entering the safety passage will have their helmets cooled in the cooling area; Use a light source camera and a thermal camera to obtain images of the head area of ​​the workers entering the inspection, and transmit the obtained image information to the image detection module at the same time; The images taken by the light source camera and the thermal camera are respectively identified through two identical detection paths; The two identical detection paths are: first, the head detection unit detects the captured image according to the head detection model to obtain the head area; then, the helmet detection unit detects the captured image according to the helmet position detection model to obtain the helmet area; finally, the head-helmet joint state determination unit obtains the head-helmet joint state according to the distance and overlapping area between the head area and the helmet area, and transmits the detection signal to the main control unit; If the detection results of the two detection paths are both that a safety helmet is worn, the main control unit transmits a signal to the access control unit to control the door to open; if the detection results of the two detection paths are different, the main control unit transmits a signal to the alarm unit.

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