Real-time alarm method, alarm device and storage medium for hot work

Abstract

The embodiments of the present application relate to the technical field of hot work special operations, and disclose a real-time alarm method, alarm device, and computer-readable storage medium for hot work special operations. The method includes: acquiring an operation image of a target hot work special operation site in real time, and determining the hot work fire source in the operation image; determining a target detection area in the operation image with the hot work fire source as the center; determining the fire occurrence value of the target hot work special operation site based on the target detection area; if the fire occurrence value is greater than a preset safety threshold, issuing an alarm prompt for the target hot work special operation site. The real-time alarm method for hot work special operations provided by the embodiments of the present application can monitor the safety of the hot work special operation site in real time, comprehensively, and automatically, and greatly improve the safety of hot work special operations.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of hot work special operations, and in particular to a real-time alarm method, alarm device and storage medium for hot work special operations. Background Art

[0002] Hot work refers to unconventional operations that can directly or indirectly generate open flames, including but not limited to various welding and cutting operations; operations using open flames such as blowtorches, stoves, liquefied gas furnaces, and electric furnaces; construction operations such as pipe simmering, boiling asphalt, and frying sand; operations that generate or may generate sparks, such as grinding, sandblasting, and hammering; operations that require temporary use of electricity or non-explosion-proof power tools; operations involving blasting using detonators and explosives; and the use of non-explosion-proof communication and electrical equipment in flammable and explosive areas. Failure to conduct hot work safely can result in burns to workers' skin and eyes, at best, and electric shock, fire, and explosion, at worst.

[0003] In order to protect the safety of workers performing special operations involving hot work, the industry has formulated strict operating prohibitions and operating specifications. Workers must hold a special operating permit for hot work, and a full-time safety supervisor must be arranged at the work site. However, safety supervisors will inevitably become lazy and careless when working for long periods of time, making it difficult to ensure highly centralized monitoring of the safety of each work site. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a real-time alarm method, alarm device and computer-readable storage medium for special hot work operations, which can monitor the safety of special hot work operations in real time, comprehensively and automatically, and greatly improve the safety of special hot work operations.

[0005] To solve the above technical problems, an embodiment of the present application provides a real-time alarm method for special operations involving hot fire, comprising the following steps: acquiring an operation image of a target special operation site involving hot fire in real time, and determining a source of the hot fire in the operation image; determining a target detection area in the operation image with the source of the hot fire as the center; determining a fire occurrence value of the target special operation site involving hot fire based on the target detection area; and issuing an alarm prompt for the target special operation site involving hot fire if the fire occurrence value is greater than a preset safety threshold.

[0006] An embodiment of the present application also provides an alarm device, including a camera, a positioning module, a detection module, an execution module and a sound device; the camera is used to obtain an operation image of a target hot work special operation site in real time; the positioning module is used to determine the source of the hot work fire in the operation image, and determine a target detection area in the operation image with the hot work fire source as the center; the detection module is used to determine the fire occurrence value of the target hot work special operation site based on the target detection area; the execution module is used to instruct the sound device to issue an alarm prompt for the target hot work special operation site when it is determined that the fire occurrence value is greater than a preset safety threshold.

[0007] An embodiment of the present application further provides a storage medium storing a computer program, which, when executed by a processor, implements the above-mentioned real-time alarm method for special hot work operations.

[0008] The embodiments of the present application provide a real-time alarm method, alarm device, and computer-readable storage medium for hot work. The alarm device acquires an operation image of the target hot work site in real time, and determines the hot work source in the acquired operation image. Then, with the hot work source as the center, a target detection area is determined in the operation image. Then, based on the determined target detection area, the fire occurrence value of the target hot work site is determined. If the alarm device determines that the fire occurrence value of the target hot work site is greater than a preset safety threshold, an alarm prompt for the target hot work site is issued. Considering that the risk factor of hot work is relatively high, in order to ensure the safety of the operators, not only do the operators need to be certified to work, but they must also strictly abide by the operation prohibitions and operation specifications during the operation. A full-time safety monitor must also be arranged at the operation site. However, it is difficult for the safety monitor to ensure that he / she is focused on monitoring the safety of each operation site at all times during long hours of work. The embodiment of the present application designs a professional alarm device for the work site, which can monitor and analyze the area near the hot fire source at the hot fire operation site in real time, comprehensively and automatically. Once it is determined that there is a high probability of fire at the work site, an alarm prompt can be issued to guide the workers and safety supervisors to stop the hot fire operation and deal with possible dangerous situations, thereby greatly improving the safety of special hot fire operations.

[0009] In addition, the operation image is an operation grayscale image, and determining the hot fire source in the operation image includes: traversing the brightness values ​​of each pixel in the operation grayscale image, and determining the pixel with the largest brightness value as the first reference point; obtaining a first window area centered on the reference point according to a preset size in the operation grayscale image; and determining the first window area as the hot fire source. Considering that special hot fire operations such as welding and cutting will produce sparks, the brightness of the sparks will be significantly higher than that of normal areas, and the location of the hot fire source will continuously produce sparks, the brightness of the hot fire source location is the highest in the entire operation grayscale image. The alarm can quickly and accurately determine the location of the hot fire source based on the brightness value of each pixel.

[0010] In addition, the operation image is an operation thermal image, and determining the source of the hot fire in the operation image includes: traversing the temperature values ​​of each pixel in the operation thermal image, determining the pixel with the largest temperature value as a second reference point; obtaining a second window area centered on the reference point according to a preset size in the operation thermal image; and determining the second window area as the source of the hot fire. Considering that some special operations involving hot fires do not normally produce open flames, but may produce open flames in the event of an accident, it is impossible to measure the potential danger from the brightness level. However, the location where open flames will be produced in the event of an accident should normally be the location with the highest temperature, and can also be considered a "hot fire source." Therefore, the alarm is based on the temperature value of each pixel, and can quickly and accurately predict the location of the "hot fire source" after the fire accident, further improving the safety of special operations involving hot fires.

[0011] In addition, the preset safety threshold includes a preset first brightness mean threshold, and the determination of the fire occurrence value of the target hot work special operation site based on the target detection area includes: calculating the brightness mean of the target detection area based on the brightness value of each pixel in the target detection area, and using the brightness mean as the fire occurrence value of the target hot work special operation site; if the fire occurrence value is greater than the preset safety threshold, issuing an alarm for the target hot work special operation site, including: issuing an alarm for the target hot work special operation site if the brightness mean is greater than the first brightness mean threshold. The range of spark splashing is a major factor affecting whether a fire will occur at the hot work special operation site. A wide range of spark splashing and a large number of sparks generated are reflected in the target detection area as an extra high brightness mean. Therefore, it is more scientific and reasonable to judge the possibility of a fire occurring at the site based on the brightness mean of the target detection area, thereby further improving the safety of the hot work special operation.

[0012] In addition, the operation image includes N consecutive operation images in time sequence, where N is an integer greater than 1, and the preset safety threshold includes a preset second brightness mean threshold and a preset image number threshold, wherein the second brightness mean threshold is less than the first brightness mean threshold; if the fire occurrence value is greater than the preset safety threshold, an alarm prompt is issued for the target hot work special operation site, including: if the average brightness value of the target detection area in the N operation images is less than or equal to the first brightness mean threshold, and the number of operation images whose average brightness value of the target detection area is greater than the second brightness mean threshold is greater than the image number threshold, an alarm prompt is issued for the target hot work special operation site. Spark splash time is another major factor affecting whether a fire will occur at a hot work special operation site. Although the spark splash range is small, it lasts for a long time and may also cause a fire. Therefore, the alarm device detects N consecutive operation images in time sequence to analyze whether a fire will occur at the operation site, which can further improve the safety of hot work special operations.

[0013] In addition, determining the target detection area in the operation image with the hot fire source as the center includes: obtaining a first target detection area to the left of the hot fire source, a second target detection area to the right of the hot fire source, and a third target detection area below the hot fire source based on a preset detection range in the operation image. At a hot fire operation site, flammable and explosive items are usually located to the left, right, and below the hot fire source, while the area above the hot fire source is usually empty. Therefore, the alarm uses the left, right, and below the hot fire source as target detection areas, which is reliable, scientific, and reasonable.

[0014] In addition, after the real-time acquisition of the operation image of the target hot work special operation site, the method further includes: sending the operation image to other terminal devices that have established a communication connection with the alarm; and after the issuance of the alarm prompt for the target hot work special operation site, the method further includes: sending the alarm prompt to other terminal devices that have established a communication connection with the alarm. After the alarm acquires the operation image of the target hot work special operation site in real time, the alarm can send the operation image to a remote device for monitoring and analysis by the remote device. After issuing the alarm prompt, the alarm can also send the alarm prompt to the remote device for the remote device to handle potential dangers.

[0015] Alternatively, the alarm device can be worn on the work clothes of the hot work operator and / or safety supervisor; or, alternatively, fixed via a bracket directly above the target hot work site. Hot work operators and safety supervisors are often close to the source of the fire during their work. Wearing the alarm device on their work clothes allows for more timely prediction of potential hazards. The wide field of view directly above the target hot work site allows for effective monitoring of the entire site. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily described by the figures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments.

[0017] Figure 1 This is the process of a real-time alarm method for hot work special operations provided by an embodiment of the present application Figure 1 ;

[0018] Figure 2 In one embodiment of the present application, the process of determining the source of a hot fire in an operation image is as follows: Figure 1 ;

[0019] Figure 3 In another embodiment of the present application, the process of determining the source of a hot fire in an operation image is Figure 2 ;

[0020] Figure 4 This is the process of the real-time alarm method for hot work special operations provided by another embodiment of the present application Figure 2 ;

[0021] Figure 5 This is the process of the real-time alarm method for hot work special operations provided by another embodiment of the present application Figure 3 ;

[0022] Figure 6 This is a schematic diagram of an alarm provided by an embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, each embodiment of the present application will be described in detail below with reference to the accompanying drawings. However, it will be understood by those skilled in the art that in each embodiment of the present application, many technical details are proposed to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present application can be implemented. The division of the following embodiments is for convenience of description and should not constitute any limitation on the specific implementation of the present application. The various embodiments can be combined and referenced with each other under the premise of no contradiction.

[0024] An embodiment of the present application relates to a real-time alarm method for special fire operations, which is applied to an alarm device. The implementation details of the real-time alarm method for special fire operations in this embodiment are specifically described below. The following content is only the implementation details provided for easy understanding and is not necessary for the implementation of this solution.

[0025] The specific process of the real-time alarm method for hot work in this embodiment can be as follows: Figure 1 As shown, including:

[0026] Step 101 : Acquire an operation image of a target hot work special operation site in real time, and determine the hot work fire source in the operation image.

[0027] Specifically, the alarm device can obtain the operation image of the target hot work special operation site in real time, and determine the location of the hot work fire source in the obtained operation image.

[0028] In one example, the alarm device is provided with a camera, which can shoot the target hot work special operation site in real time to obtain the operation image of the target hot work special operation site. The operation image shot can be multiple images continuous in time sequence, or the operation video of the target hot work special operation site can be directly shot.

[0029] In one example, the working position of hot work is usually a hot work source, such as the cutting position of electric welding. The alarm can determine the working position of the hot work in the working image and identify the working position as a hot work source.

[0030] In a specific implementation, the real-time alarm method for special hot work operations provided in this embodiment is applied to an alarm device, which can be worn on the work clothes of the special hot work operator and / or the safety supervisor, or fixed directly above the target special hot work operation site through a bracket. The special hot work operator and the safety supervisor are close to the source of the hot work fire during the operation. Wearing the alarm device on the work clothes of the special hot work operator and the safety supervisor can predict possible dangerous situations more timely, and the field of view directly above the target special hot work operation site is wide, which can well monitor the entire special hot work operation site.

[0031] In one example, the alarm device can be worn on the shoulder of the work clothes of the hot work operator and / or the safety supervisor, or can also be worn on the safety helmet of the hot work operator and / or the safety supervisor.

[0032] Step 102: Determine a target detection area in the operation image with the fire source as the center.

[0033] Specifically, after the alarm device determines the fire source in the operation image, it can determine the target detection area in the operation image with the fire source as the center. The target detection area is the area where a fire hazard may occur.

[0034] In one example, after the alarm determines the source of a fire in the operation image, the eight neighborhoods around the source of the fire can be used to determine the target detection areas, namely the left neighborhood, the right neighborhood, the upper neighborhood, the lower neighborhood, the upper left neighborhood, the upper right neighborhood, the lower left neighborhood, and the lower right neighborhood.

[0035] In one example, the alarm can obtain a first target detection area on the left side of the dynamic fire source, a second target detection area on the right side of the dynamic fire source, and a third target detection area below the dynamic fire source according to a preset detection range in the operation image. The preset detection range can be set by technicians in this field according to actual needs, and this embodiment does not make any specific limitations on this.

[0036] Step 103: Determine the fire occurrence value of the target hot work special operation site according to the target detection area.

[0037] Specifically, after the alarm device determines the target detection area in the operation image, it can determine the fire occurrence value of the target hot work special operation site based on the target detection area.

[0038] In one example, the alarm device can determine the size of the flame area in the target detection area, and use the ratio of the flame area to the area of ​​the target detection area as the fire occurrence value at the target hot work special operation site.

[0039] Step 104: If the fire occurrence value is greater than a preset safety threshold, an alarm prompt is issued for the target hot work special operation site.

[0040] In a specific implementation, after determining the fire occurrence value of the target hot fire special operation site, the alarm can determine whether the fire occurrence value of the target hot fire special operation site is greater than a preset safety threshold. If the fire occurrence value of the target hot fire special operation site is greater than the preset safety threshold, it means that the possibility of a fire occurring at the target hot fire special operation site is relatively high, and the alarm can issue an alarm prompt for the target hot fire special operation site; if the fire occurrence value of the target hot fire special operation site is less than or equal to the preset safety threshold, it means that the target hot fire special operation site is safe and no alarm is needed. The preset safety threshold can be set by technical personnel in this field according to actual needs, and this embodiment does not make specific limitations on this.

[0041] In one example, the alarm device is provided with a sound, a buzzer and a warning light. The alarm prompts issued by the alarm device for the target hot work special operation site may include alarm voice broadcasts, buzzer sounds and warning light flashing signals.

[0042] In this embodiment, the alarm device can acquire the operation image of the target hot work special operation site in real time, and determine the hot work fire source in the acquired operation image, and then determine the target detection area in the operation image with the hot work fire source as the center, and then determine the fire occurrence value of the target hot work special operation site based on the determined target detection area. If the alarm device determines that the fire occurrence value of the target hot work special operation site is greater than the preset safety threshold, it will issue an alarm prompt for the target hot work special operation site. Considering that the risk factor of hot work special operation is relatively high, in order to ensure the safety of the operators, not only do the operators need to be certified to work, and strictly abide by the operation prohibitions and operation specifications during the operation, but the operation site must also arrange a full-time safety monitor. However, it is difficult for the safety monitor to ensure that he concentrates on monitoring the safety of each operation site at all times during long work hours. The embodiment of the present application designs a professional alarm device for the work site, which can monitor and analyze the area near the hot fire source at the hot fire operation site in real time, comprehensively and automatically. Once it is determined that there is a high probability of fire at the work site, an alarm prompt can be issued to guide the workers and safety supervisors to stop the hot fire operation and deal with possible dangerous situations, thereby greatly improving the safety of special hot fire operations.

[0043] In one embodiment, the operation image of the target hot work site obtained by the alarm device is an operation grayscale image. The alarm device can determine the source of the hot work in the operation image by Figure 2 The steps shown in the figure are as follows:

[0044] Step 201 traverses the brightness values ​​of each pixel in the operation grayscale image, and determines the pixel with the largest brightness value as the first reference point.

[0045] Specifically, after obtaining the operation grayscale map of the target special fire operation site, the alarm can traverse the brightness value of each pixel in the operation grayscale map, determine the maximum brightness value of each pixel in the operation grayscale map, and determine the pixel with the largest brightness value as the first reference point.

[0046] Step 202: Obtain a first window area centered at a reference point in the operation grayscale image according to a preset size.

[0047] Step 203: Determine the first window area as a hot fire source.

[0048] Specifically, after the alarm determines the first reference point, it can obtain a first window area centered on the reference point according to a preset size in the operation grayscale image, and determine the first window area as the source of the fire. The preset size can be set by technicians in this field as needed, and the embodiments of the present application do not make specific limitations on this.

[0049] In this embodiment, considering that hot work such as welding and cutting will generate sparks, the brightness of the sparks will be significantly higher than that of normal areas, and the location of the hot work source will continue to generate sparks. Therefore, the brightness of the location of the hot work source is the highest in the entire operation grayscale image. The alarm is based on the brightness value of each pixel point, and can quickly and accurately determine the location of the hot work source.

[0050] In another embodiment, the operation image of the target hot work site acquired by the alarm device is an operation thermal image. The alarm device can determine the source of the hot work in the operation image by Figure 3 The steps shown in the figure are as follows:

[0051] Step 301 traverses the brightness values ​​of each pixel in the operation thermal imaging image, and determines the pixel with the largest temperature value as the second reference point.

[0052] Specifically, after obtaining the target hot work special operation site's thermal imaging image, the alarm device can traverse the temperature values ​​of each pixel in the thermal imaging image, determine the maximum temperature value of each pixel in the thermal imaging image, and determine the pixel with the largest temperature value as the second reference point.

[0053] Step 302: Obtain a second window area centered at the reference point in the operation grayscale image according to a preset size.

[0054] Step 303: Determine the second window area as a hot fire source.

[0055] Specifically, after the alarm determines the second reference point, it can obtain a second window area centered on the reference point according to a preset size in the operation grayscale image, and determine the second window area as the source of the fire. The preset size can be set by technicians in this field as needed, and the embodiments of the present application do not make specific limitations on this.

[0056] In this embodiment, it is considered that some special operations involving hot work will not produce open flames normally, but open flames may be produced when an accident occurs. Therefore, it is impossible to measure the potential danger from the brightness level. However, the location where the open flame will be produced when an accident occurs should be the location with the highest temperature under normal circumstances, and can also be considered as the "hot work source". Therefore, the alarm is based on the temperature value of each pixel point, and can quickly and accurately predict the location of the "hot work source" after the fire accident, thereby further improving the safety of special operations involving hot work.

[0057] An embodiment of the present application relates to a real-time alarm method for special operations involving hot work, which is applied to an alarm device. The implementation details of the real-time alarm method for special operations involving hot work in this embodiment are specifically described below. The following content is only for the convenience of understanding the implementation details and is not necessary for the implementation of this solution. The preset safety threshold in this embodiment includes a preset first brightness mean threshold. The specific process of the real-time alarm method for special operations involving hot work in this embodiment can be as follows: Figure 4 As shown, including:

[0058] Step 401 : Acquire an operation image of a target hot work special operation site in real time, and determine the hot work fire source in the operation image.

[0059] Step 402 : determining a target detection area in the operation image with the fire source as the center.

[0060] Among them, steps 401 to 402 are substantially the same as steps 101 to 102 and are not described again here.

[0061] Step 403 , calculating the average brightness value of the target detection area according to the brightness value of each pixel point in the target detection area, and using the average brightness value as the fire occurrence value of the target hot work special operation site.

[0062] In a specific implementation, after the alarm determines the target detection area in the operation image, it can calculate the average brightness value of the target detection area based on the brightness value of each pixel point in the target detection area, and use the average brightness value as the fire occurrence value of the target hot work special operation site.

[0063] Step 404: If the brightness mean is greater than a first brightness mean threshold, an alarm is issued for the target hot work special operation site.

[0064] In a specific implementation, after calculating the average brightness value of the target detection area, the alarm can determine whether the average brightness value of the target detection area is greater than the first brightness average threshold. If the average brightness value of the target detection area is greater than the first brightness average threshold, it means that the possibility of a fire occurring at the target special fire operation site is relatively high, and the alarm can issue an alarm prompt for the target special fire operation site; if the average brightness value of the target detection area is less than or equal to the first brightness average threshold, it means that the target special fire operation site is safe and no alarm needs to be issued. Among them, the first brightness average threshold can be set by technical personnel in this field according to actual needs, and this embodiment does not make specific limitations on this.

[0065] In this embodiment, it is considered that the range of spark splashing is a major factor affecting whether a fire will occur at the site of special hot work. The wide range of spark splashing and the large number of sparks generated are reflected in the extra high average brightness value in the target detection area. Therefore, it is more scientific and reasonable to judge the possibility of fire at the site based on the average brightness value of the target detection area, thereby further improving the safety of special hot work.

[0066] In another embodiment, the operation images acquired by the alarm include N operation images that are continuous in time sequence, where N is an integer greater than 1, and the preset safety threshold includes a preset second brightness mean threshold and a preset image quantity threshold, where the second brightness mean threshold is less than the first brightness mean threshold. If the alarm determines that the brightness mean values ​​of the target detection area in the N operation images are all less than or equal to the first brightness mean threshold, and the number of operation images in which the brightness mean value of the target detection area is greater than the second brightness mean threshold is greater than the image quantity threshold, then an alarm prompt is issued for the target hot work special operation site; wherein, the preset second brightness mean threshold and the preset image quantity threshold can be set by a person skilled in the art according to actual needs, and this embodiment does not specifically limit this.

[0067] In this embodiment, the spark splashing time is another major factor affecting whether a fire will occur at the hot work site. Although the spark splashing range is small but the duration is long, it may also cause a fire. Therefore, the alarm detects N consecutive operation images in time sequence to analyze whether a fire will occur at the operation site, which can further improve the safety of the hot work.

[0068] An embodiment of the present application relates to a real-time alarm method for special operations involving hot work, which is applied to an alarm device. The implementation details of the real-time alarm method for special operations involving hot work in this embodiment are specifically described below. The following content is only for the convenience of understanding the implementation details and is not necessary for the implementation of this solution. The preset safety threshold in this embodiment includes a preset first brightness mean threshold. The specific process of the real-time alarm method for special operations involving hot work in this embodiment can be as follows: Figure 5 As shown, including:

[0069] Step 501 : Acquire an operation image of a target hot work special operation site in real time, and determine the hot work fire source in the operation image.

[0070] Among them, step 501 is substantially the same as step 101 and will not be described again here.

[0071] Step 502: Send the operation image to other terminal devices that have established a communication connection with the alarm.

[0072] In a specific implementation, after the alarm device obtains the operation image of the target hot work special operation site, it can send the operation image to the remote device for monitoring and analysis by the remote device.

[0073] Step 503: Determine a target detection area in the operation image with the fire source as the center.

[0074] Step 504: Determine the fire occurrence value of the target hot work special operation site according to the target detection area.

[0075] Step 505: If the fire occurrence value is greater than a preset safety threshold, an alarm prompt is issued for the target hot work special operation site.

[0076] Among them, steps 503 to 505 are substantially the same as steps 102 to 104 and are not described again here.

[0077] Step 506: Send the alarm prompt to other terminal devices that have established a communication connection with the alarm device.

[0078] In a specific implementation, after the alarm device issues an alarm prompt for the target hot work special operation site, the alarm prompt can be sent to a remote device for the remote device to handle potential dangers.

[0079] The steps of the various methods above are divided only for the purpose of clear description. During implementation, they can be combined into one step or some steps can be split and decomposed into multiple steps. As long as they include the same logical relationship, they are all within the scope of protection of this patent. Adding insignificant modifications or introducing insignificant designs to the algorithm or process without changing the core design of the algorithm and process are all within the scope of protection of this patent.

[0080] Another embodiment of the present application relates to an alarm. The implementation details of the alarm of this embodiment are described in detail below. The following content is only for the convenience of understanding the implementation details and is not necessary for the implementation of this solution. The schematic diagram of the alarm of this embodiment can be as follows: Figure 6 As shown, it includes a camera 601, a positioning module 602, a detection module 603, an execution module 604 and a speaker 605.

[0081] The camera 601 is used to obtain real-time operation images of the target hot work special operation site.

[0082] The positioning module 602 is used to determine the source of the hot fire in the operation image, and determine the target detection area in the operation image with the hot fire source as the center.

[0083] The detection module 603 is used to determine the fire occurrence value of the target hot work special operation site according to the target detection area.

[0084] When the execution module 604 determines that the fire occurrence value is greater than the preset safety threshold, it instructs the audio 605 to issue an alarm prompt for the target hot work special operation site.

[0085] It is worth mentioning that all modules involved in this embodiment are logical modules. In actual applications, a logical unit can be a physical unit, a part of a physical unit, or a combination of multiple physical units. In addition, to highlight the innovation of this application, this embodiment does not include units that are not closely related to solving the technical problem proposed by this application. However, this does not mean that other units do not exist in this embodiment.

[0086] Another embodiment of the present application relates to a computer-readable storage medium storing a computer program, which implements the above method embodiment when executed by a processor.

[0087] That is, those skilled in the art will understand that all or part of the steps in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a program, which is stored in a storage medium and includes a number of instructions for causing a device (which may be a single-chip microcomputer, chip, etc.) or a processor to execute all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc., various media that can store program code.

[0088] Those skilled in the art will appreciate that the above embodiments are specific embodiments for implementing the present application, and that in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present application.

Claims

1. A real-time alarm method for hot work, characterized in that: Applied to alarms, including: Acquire an operation image of a target hot work special operation site in real time, and determine the hot work fire source in the operation image; Determine a target detection area in the operation image with the hot fire source as the center; Determining a fire occurrence value at the target hot work special operation site according to the target detection area; If the fire occurrence value is greater than a preset safety threshold, an alarm prompt is issued for the target hot work special operation site; The determining of the target detection area in the operation image with the hot fire source as the center includes: obtaining, in the operation image, a first target detection area to the left of the hot fire source, a second target detection area to the right of the hot fire source, and a third target detection area below the hot fire source according to a preset detection range; Among them, determining the fire occurrence value of the target hot work special operation site based on the target detection area includes: calculating the average brightness value of the target detection area based on the brightness value of each pixel point in the target detection area, and using the average brightness value as the fire occurrence value of the target hot work special operation site.

2. The real-time alarm method for hot work according to claim 1 is characterized in that: The operation image is an operation grayscale image, and determining the hot work fire source in the operation image includes: Traversing the brightness values ​​of each pixel in the operation grayscale image, and determining the pixel with the largest brightness value as the first reference point; Acquire a first window area centered at the first reference point in the operation grayscale image according to a preset size; The first window area is determined as a hot fire source.

3. The real-time alarm method for hot work according to claim 1 is characterized in that: The operation image is an operation thermal image, and determining the source of the hot work fire in the operation image includes: Traversing the temperature values ​​of each pixel in the operation thermal imaging image, and determining the pixel with the largest temperature value as the second reference point; Acquire a second window area centered at the second reference point in the operation thermal image according to a preset size; The second window area is determined as a hot fire source.

4. The real-time alarm method for hot work according to claim 2 is characterized in that: The preset safety threshold includes a preset first brightness mean threshold, and if the fire occurrence value is greater than the preset safety threshold, an alarm prompt is issued for the target hot work special operation site, including: If the brightness mean is greater than the first brightness mean threshold, an alarm is issued for the target hot work special operation site.

5. The real-time alarm method for hot work according to claim 4 is characterized in that: The job image includes N job images that are continuous in time sequence, where N is an integer greater than 1, and the preset safety threshold includes a preset second average brightness threshold and a preset image quantity threshold, and the second average brightness threshold is less than the first average brightness threshold; If the fire occurrence value is greater than a preset safety threshold, an alarm prompt is issued for the target hot work special operation site, including: If the average brightness values ​​of the target detection areas in the N operation images are all less than or equal to the first brightness average threshold, and the number of operation images in which the average brightness values ​​of the target detection areas are greater than the second brightness average threshold is greater than the image number threshold, an alarm prompt is issued for the target special fire operation site.

6. The real-time alarm method for hot work according to any one of claims 1 to 5, characterized in that: After obtaining the real-time operation image of the target hot work special operation site, the method further includes: Sending the operation image to other terminal devices that have established a communication connection with the alarm device; After issuing the warning prompt for the target hot work special operation site, the method further includes: The alarm prompt is sent to other terminal devices that have established a communication connection with the alarm device.

7. The real-time alarm method for hot work according to any one of claims 1 to 5, characterized in that: The alarm device is worn on the work clothes of the hot work personnel and / or safety supervisors; Alternatively, it is fixed directly above the target hot work special operation site through a bracket.

8. An alarm device, characterized in that: Including camera, positioning module, detection module, execution module and audio; The camera is used to obtain real-time operation images of the target hot work special operation site; The positioning module is used to determine the hot fire source in the operation image, and determine the target detection area in the operation image with the hot fire source as the center; The positioning module is further specifically configured to obtain, in the operation image, according to a preset detection range, a first target detection area on the left side of the hot fire source, a second target detection area on the right side of the hot fire source, and a third target detection area below the hot fire source; The detection module is used to determine the fire occurrence value of the target hot work special operation site according to the target detection area; The detection module is further specifically configured to calculate an average brightness value of the target detection area based on the brightness value of each pixel point in the target detection area, and use the average brightness value as the fire occurrence value of the target hot work special operation site; The execution module is used to instruct the audio to issue an alarm prompt for the target hot work special operation site when it is determined that the fire occurrence value is greater than a preset safety threshold.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the real-time alarm method for hot work special operations according to any one of claims 1 to 7 is implemented.

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