CN111738222A - A safety helmet detection device and method - Google Patents

Abstract

The invention discloses a safety helmet detection device and a safety helmet detection method, which comprise a detection channel, wherein a warning system is arranged in the detection channel, a cooling area and a detection area are sequentially arranged in the detection channel, an air cooling assembly 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 simultaneously take pictures of the head area of a human body, and the shot pictures are used for judging whether a safety helmet is worn through an image detection module. The light source camera and the thermal camera are arranged to shoot simultaneously to acquire image information, and the accuracy of image acquisition is ensured by utilizing different imaging modes of the two cameras; and the images collected by the light source camera and the thermal camera are detected simultaneously, namely the two same detection paths ensure the accuracy of the detection result through a dual detection mode.

Description

A safety helmet detection device and method

technical field

The present invention relates to the technical field of safety equipment detection, and more particularly, to a safety helmet detection device, method and method.

Background technique

With the development of the social economy, the construction industry is developing faster and faster, and accordingly, the 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, operators and construction site staff urgently need some safety protection measures, such as wearing safety helmets, to effectively prevent the occurrence of safety accidents . Due to the low safety awareness of the staff, or due to some external factors, the staff did not wear safety helmets when entering the workplace, resulting in frequent safety accidents.

It can be seen that the accurate detection of the safety helmet to remind the staff who do not wear the safety helmet to wear it is beneficial to avoid the occurrence of safety accidents to a certain extent. Existing helmet detection mostly uses a single ordinary light-sensing camera to take pictures of the operator's head. Due to the influence of light conditions and the function of the camera itself, it is inevitable that there will be shooting errors, which will eventually lead to incorrect detection results.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a safety helmet detection device and method, which can improve the accuracy of the safety helmet detection by improving the accuracy of the operator's head image information acquisition, so as to solve the technical problems existing in the background art.

The novel technical solution of the present invention is a safety helmet detection device, comprising a detection channel, a warning system is arranged in the detection channel, a cooling area and a detection area are arranged in sequence in the detection channel, and an air cooling component is arranged in the cooling area , the detection area is provided with a thermal camera and a light source camera, the thermal camera and the light source camera simultaneously take pictures of the head area of the human body, and the taken images are judged by the image detection module whether a safety helmet is worn.

In a preferred embodiment, the air-cooling assembly includes an air cooler and an air guide cover fixedly connected to the air outlet of the air cooler, a sealing plate is provided on the side of the air guide cover away from the air outlet, and the air guide cover is provided with a sealing plate. There are several air cooling channels on the board.

In a preferred embodiment, the light source camera and the thermal camera are rotated and fixed at the outlet of the detection channel through a fixed bracket, and are aligned with the inside of the detection channel, and the fixed bracket is connected with a rotation for controlling the rotation angle of the camera. rod.

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

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 of the joint state determination unit of the head helmet, and the access control unit and the alarm unit respectively receive the main control unit Unit control signal.

A safety helmet detection method, comprising:

Cool the safety helmets for workers entering the safe passage through the cooling area;

The light source camera and the thermal camera are used to obtain images of the head area of the workers entering the inspection, and the obtained image information is transmitted to the image inspection module at the same time;

Distinguish the images captured by the light source camera and the thermal camera through two identical detection paths;

The two identical detection paths are: firstly, 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; The unit for determining the joint state of the human head safety helmet obtains the joint state of the human head safety helmet according to the distance and overlapping area between the head area and the safety helmet area, and transmits the detection signal to the main control unit;

If the detection results of the two paths are wearing helmets, the main control unit transmits the signal to the access control unit to control the door to open; if the detection results of the two detection paths are similar and different, the main control unit transmits the signal to the alarm unit.

The beneficial effects of the technical solution of the present invention are:

1. By setting the light source camera and the thermal camera to take pictures and collect image information at the same time, the imaging methods of the two cameras are different to ensure the accuracy of image acquisition; and the images collected by the light source camera and the thermal camera are detected at the same time, that is, two identical images. The detection path, through the double detection method, ensures the accuracy of the detection results.

2. By setting a cooling area in the detection channel, it is ensured that the temperature of the outer surface of the helmet is lower than the temperature of the human body, which is convenient for the clarity of the pictures taken by the photosensitive camera.

Description of drawings

1 is a side view of the overall structure of the present invention,

Figure 2 is a schematic structural diagram of the air-cooled assembly of the present invention,

FIG. 3 is a fixed diagram of the thermal camera and the light source camera of the present invention,

Figure 4 is a structural diagram of an image detection module.

Description of reference numerals: 1 detection channel, 2 cooling area, 3 detection area, 4 air cooling components, 5 cooling fan, 6 air guide hood, 7 air cooling channel, 8 light source camera, 9 thermal camera, 10 fixing bracket, 11 Swivel lever, 12 mounting plates, 13 access doors, 14 alarms.

Detailed ways

The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are presented for purposes of illustration and description, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to better explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use.

As shown in FIG. 1 , the technical solution of the present invention is a safety helmet detection device, comprising a detection channel 1, a warning system is arranged in the detection channel 1, and a cooling area 2 and a detection area 3 are sequentially arranged in the detection channel 1, An air cooling assembly 4 is arranged in the cooling area, and a thermal camera 9 and a light source camera 8 are arranged in the detection area. The thermal camera 9 and the light source camera 8 simultaneously take pictures of the head area of the human body, and The image is judged by the image detection module whether to wear a helmet. 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 outline of a 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 imaging methods of the two cameras are different to ensure the accuracy of image acquisition; and the images collected by the light source camera 8 and the thermal camera 9 are detected simultaneously, that is, two The same detection path, through the double detection method, ensures the accuracy of the detection results.

As shown in FIG. 2 , the air cooling assembly 4 includes an air cooler 5 and an air guide hood 6 fixedly connected to the air outlet of the air cooler 5. The air guide hood 6 is provided with a sealing plate on the side away from the air outlet. The sealing plate There are several air cooling channels 7 on each. The cold air blown out by the air cooler 5 is first collected in the air guide hood 6 through the air guide hood 6, and then discharged through the air cooling channel 7 arranged on the sealing plate, which makes the exhausted cold air have a higher wind speed. When the worker enters the air cooling assembly When the location of 4 is reduced to area 2, the cold air will blow the cold air to the safety helmet of the worker through the air cooling channel 7 to cool the safety helmet to ensure that when the worker enters the detection area 3, the external temperature of the safety helmet is lower than the temperature of the human body. .

As shown in FIG. 3 , the light source camera 8 and the thermal camera 9 are rotated and fixed at the exit of the detection channel 1 through a fixing bracket 10, and the fixing bracket 10 is fixed on the mounting plate 12 on the top of the detection door, and is aligned with the detection channel 1. Inside, the fixed bracket 10 is connected with a rotation rod 11 for controlling the rotation angle of the camera. One end of the rotating rod 11 is rotatably connected with the fixed bracket 10 , and the other end is rotated and fixed on the detection channel 1 .

As shown in FIG. 4 , the image detection module includes an information storage unit, a human head detection unit, a helmet detection unit, and a combined state determination unit of a human head helmet and a helmet, and the combined state determination unit of the human head helmet and helmet transmits a 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 joint state determination unit of the human head safety helmet, and the access control unit and the alarm unit respectively receive the control signal of the main control unit. The main control unit determines the unit detection signal through the joint state of the human head helmet. If the result is to pass the inspection, the detection signal is transmitted to the access control unit to control the passage door 13 to open. If the inspection is not passed, the detection signal is transmitted to the alarm unit. The alarm 14 performs Alarm, indicating that the helmet is not worn. .

A safety helmet detection method, comprising:

Workers entering the safe passage are cooled down through the cooling zone 2;

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

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

The two identical detection paths are: firstly, 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; The unit for determining the joint state of the human head safety helmet obtains the joint state of the human head safety helmet according to the distance and overlapping area between the head area and the safety helmet area, and transmits the detection signal to the main control unit;

If the detection results of the two paths are wearing helmets, the main control unit transmits the signal to the access control unit to control the door to open; if the detection results of the two detection paths are similar and different, the main control unit transmits the signal to the alarm unit.

Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art and related fields without creative work shall fall within the protection scope of the present invention. The structures, devices and operation methods that are not specifically described and explained in the present invention are implemented according to conventional means in the art unless otherwise specified and limited.

Claims (6)

1. The utility model provides a safety helmet detection device, includes the testing channel, be equipped with warning system in the testing channel, its characterized in that: the safety helmet is characterized in that a cooling area and a detection area are sequentially arranged in the detection channel, an air cooling assembly is arranged in the cooling area, a heat-sensitive camera and a light source camera are arranged in the detection area, the heat-sensitive camera and the light source camera shoot the head area of the human body at the same time, and whether the safety helmet is worn or not is judged through an image detection module according to shot images.

2. A safety helmet detection apparatus as claimed in claim 1, wherein: the air cooling component comprises an air cooler and an air guide cover fixedly connected with an air outlet of the air cooler, a sealing plate is arranged on the side, away from the air outlet, of the air guide cover, and a plurality of air cooling channels are arranged on the sealing plate.

3. A safety helmet detection apparatus as claimed in claim 1, wherein: the light source camera with the temperature sensing camera passes through the fixed bolster rotation to be fixed in the detection passageway exit, and aims at inside the detection passageway, be connected with the dwang that is used for controlling camera turned angle on the fixed bolster.

4. A safety helmet detection apparatus as claimed in claim 1, wherein: the image detection module comprises an information storage unit, a head detection unit, a safety helmet detection unit and a head safety helmet joint state determination unit, and the head safety helmet joint state determination unit transmits a detection signal to the warning system.

5. A safety helmet detection apparatus as claimed in claim 1, wherein: the warning system comprises a main control unit, an entrance guard unit and an alarm unit, wherein the main control unit receives the detection signal of the head helmet combined state determining unit, and the entrance guard unit and the alarm unit respectively receive the control signal of the main control unit.

6. A method of detecting safety helmets according to any of claims 1 to 6, comprising:

cooling the safety helmet by workers entering the safety channel through the cooling area;

respectively acquiring head area images of workers entering the detection by adopting a light source camera and a thermal camera, and simultaneously transmitting the acquired image information to an image detection module;

distinguishing the images shot by the light source camera and the thermal camera respectively through two same detection paths;

the two identical detection paths are: firstly, detecting a shot image according to a human head detection model by a human head detection unit to obtain a human head area; then, detecting the shot image through a safety helmet detection unit according to the safety helmet position detection model to obtain a safety helmet area; finally, obtaining the head safety helmet joint state according to the distance and the overlapping area of the head area and the safety helmet area through a head safety helmet joint state determining unit, and transmitting a detection signal to a main control unit;

if the detection results of the two paths are both wearing the safety helmet, the main control unit transmits a signal to the access control unit to control the door to be opened; 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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