Method, device and equipment for evaluating fitness of firefighter and firefighter uniform and medium

Abstract

The invention relates to the technical field of safety protection, and discloses a firefighter and firefighter uniform fitness evaluation method, device and equipment and a medium. The method comprises the following steps: performing three-dimensional scanning on a human body of a firefighter who does not wear any clothes and a human body of the firefighter who wears a firefighter uniform to obtain a three-dimensional net body model and a wearing human body model of the firefighter; according to the three-dimensional clean body model and the dressing human body model, obtaining a skin area where the firefighter body is in direct contact with the firefighter uniform and a skin area where the firefighter body is covered by the firefighter uniform, and determining a ratio coefficient of a contact area between the firefighter uniform and the human body skin surface when the firefighter wears the firefighter uniform; determining the thickness of an air layer between the firefighter uniform and the surface of human skin when the firefighter wears the firefighter uniform; the fitness of the firefighter and the firefighter uniform is evaluated by combining the ratio coefficient of the contact area between the firefighter uniform and the human skin surface when the firefighter wears the firefighter uniform and the thickness of the air layer between the firefighter uniform and the human skin surface, and the evaluation efficiency and accuracy are high.

Description

Technical Field

[0001] The present invention relates to the field of safety protection technology, and in particular to a method, device, equipment and medium for evaluating the fit between a firefighter and a fire suit. Background Art

[0002] With the continuous development of firefighting technology, the protective performance of firefighting protective clothing (i.e., firefighting clothing) has been significantly improved. In recent years, some researchers have begun to focus on improving the comfort performance of firefighting protective clothing. However, the contradiction between protection and ergonomics has long existed, which greatly limits the rescue efficiency and even threatens the lives of rescuers. In recent years, some researchers have begun to focus on how to improve the comfort of firefighting protective clothing, especially in terms of improving wearing comfort and flexibility. However, the contradiction between protection and ergonomics has long existed: highly protective clothing is usually thicker and heavier, which limits the range of activities and flexibility of rescuers; and designs that focus on comfort and flexibility may have some discounts on protection. This contradiction not only affects the efficiency of rescuers at the disaster site, but may also threaten their lives under certain extreme conditions. Therefore, how to find a balance between protection and ergonomics has become a major challenge in the design of firefighting protective clothing.

[0003] In order to meet this challenge, the study of ergonomics or fit has gradually become one of the important research contents to ensure the safety of rescue workers and improve disaster response capabilities. By optimizing the fit of protective clothing, the comfort and flexibility of rescue workers can be effectively improved, so that they can maintain high work efficiency when performing tasks. However, at present, in the evaluation of the fit and ergonomics of fire-fighting protective clothing, most of them rely on expert experience or limited experimental data, and the evaluation accuracy is not high; or based on the contact area between the fire-fighting protective clothing and the human body, for example, a threshold is set, and if the contact area is greater than this threshold, it is judged to be fit, and if it is less than or equal to this threshold, it is judged to be unfit. However, the basis for judging the fit of different parts of the human body is different. This method is based on the overall judgment, so the evaluation accuracy of this method is also low. Summary of the invention

[0004] The purpose of the present invention is to provide a method, device, equipment and medium for evaluating the fit between a firefighter and a fire suit, which can quickly and accurately determine the adaptability and fit between the fire suit and the firefighter's body.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a method for evaluating the fit between a firefighter and a fire uniform, comprising the following steps:

[0006] The firefighter's body without any clothes and the firefighter's body in fire suit are scanned in three dimensions to obtain a three-dimensional clean body model and a dressed body model of the firefighter;

[0007] The skin area of ​​each part of the firefighter's body that is in direct contact with the fire suit and the skin area of ​​each part of the firefighter's body that is covered by the fire suit are obtained based on the three-dimensional net body model and the dressed body model, so as to determine the ratio coefficient of the contact area between the firefighter's clothes and the skin surface of each part of the body when the firefighter wears the fire suit;

[0008] Obtaining a first volume and a first side surface area of ​​each part of the human body when the firefighter is not wearing any clothes according to the three-dimensional net body model, and obtaining a second volume and a second side surface area of ​​each part of the human body when the firefighter is wearing a fire suit according to the dressed human body model;

[0009] Determine the thickness of the air layer between the firefighter's clothes and the skin surface of each part of the human body when the firefighter wears the fire suit through the first volume, the first side surface area, the second volume and the second side surface area of ​​each part of the human body of the firefighter;

[0010] The fit of the firefighter and the fire suit is evaluated based on the ratio coefficient of the contact area between the clothes and the skin surface of various parts of the human body when the firefighter wears the fire suit, as well as the thickness of the air layer between the clothes and the skin surface of various parts of the human body.

[0011] In some optional embodiments, the three-dimensional scanning of the firefighter's body when not wearing any clothes and the firefighter's body when wearing firefighter clothing is performed respectively to obtain the three-dimensional net body model and the dressed body model of the firefighter includes:

[0012] Perform three-dimensional scanning on the body of the firefighter when not wearing any clothes and when wearing fire suits, and obtain the corresponding three-dimensional point cloud data of the two;

[0013] Encapsulate the three-dimensional point cloud data corresponding to each of the two into two polygonal models respectively;

[0014] The mesh doctor of Geomagic software was used to detect and repair the holes, sharp edges and irregularities in the two polygonal models. The two repaired polygonal models were used as the firefighter's three-dimensional clean body model and dressed body model respectively.

[0015] In some optional embodiments, the mesh doctor detection using Geomagic software to repair holes, sharp edges and irregularities in the two polygonal models respectively includes:

[0016] For small holes, curvature filling is used to repair them;

[0017] For large holes, the bridging tool is used to convert the large holes into small holes, and then the curvature filling method is used to repair them.

[0018] In some optional embodiments, before respectively encapsulating the three-dimensional point cloud data corresponding to the two into two polygonal models, the method further includes:

[0019] Eliminate the clutter and noise in the three-dimensional point cloud data corresponding to each other;

[0020] A non-uniform curvature sampling method is adopted. According to the curvature of various parts of the firefighter's body, sampling points are added to the area where the curvature is greater than the preset threshold in the three-dimensional point cloud data corresponding to the two, and sampling points are reduced in the area where the curvature is less than or equal to the preset threshold, so as to obtain the optimized three-dimensional point cloud data corresponding to the two.

[0021] In some optional embodiments, the step of obtaining the skin areas of various parts of the firefighter's body that are in direct contact with the fire suit and the areas of various parts of the firefighter's body that are covered by the fire suit based on the three-dimensional clean body model and the dressed body model includes:

[0022] Perform color spectrum deviation analysis on 3D net body models and clothed mannequins to show the differences between 3D net body models and clothed mannequins through color coding;

[0023] The difference results between the three-dimensional clean body model and the clothed body model displayed by color coding are used to obtain the skin area of ​​each part of the firefighter's body that is in direct contact with the fire suit and the area of ​​each part of the firefighter's body that is covered by the fire suit.

[0024] In some optional embodiments, the thickness of the air layer between the firefighter's clothing and the skin surface of each part of the human body when the firefighter wears the fire suit is expressed by the following formula:

[0025]

[0026] In the formula, D represents the thickness of the air layer, V1 represents the first volume, V2 represents the second volume, S1 represents the first side surface area, and S2 represents the second side surface area.

[0027] In some optional embodiments, the fit between the firefighter and the fire suit is evaluated by the following formula:

[0028]

[0029] In the formula, F fit represents the result of fit evaluation, w i represents the preset weight of the i-th human body part, R i The ratio coefficient representing the contact area of ​​the i-th human body part, D air,i Represents the thickness of the air layer at the i-th body part.

[0030] An embodiment of the present invention further provides a device for evaluating the fit between a firefighter and a fire suit, comprising:

[0031] The model building module is used to perform three-dimensional scanning on the human body of the firefighter when not wearing any clothes and when wearing firefighter uniforms, respectively, to obtain a three-dimensional net body model and a dressed human body model of the firefighter;

[0032] The first parameter acquisition module is used to obtain the skin area of ​​each part of the firefighter's body that is in direct contact with the fire suit and the skin area of ​​each part of the firefighter's body that is covered by the fire suit based on the three-dimensional clean body model and the dressed body model, so as to determine the ratio coefficient of the contact area between the clothes and the skin surface of each part of the body when the firefighter wears the fire suit;

[0033] A second parameter acquisition module is used to acquire a first volume and a first side surface area of ​​each part of the human body when the firefighter is not wearing any clothes according to the three-dimensional net body model, and to acquire a second volume and a second side surface area of ​​each part of the human body when the firefighter is wearing a fire suit according to the dressed human body model;

[0034] Determine the thickness of the air layer between the firefighter's clothes and the skin surface of each part of the human body when the firefighter wears the fire suit through the first volume, the first side surface area, the second volume and the second side surface area of ​​each part of the human body of the firefighter;

[0035] The fit evaluation module is used to determine the thickness of the air layer between the firefighter's clothing and the skin surface of various parts of the human body when the firefighter wears the fire suit, so as to evaluate the fit between the firefighter and the fire suit.

[0036] An embodiment of the present invention also provides a computer device, comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the above-mentioned method of the fit of firefighters and fire uniforms.

[0037] An embodiment of the present invention further provides a computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the above-mentioned method for achieving fit between a firefighter and a fire suit.

[0038] The method for fitting a firefighter and a fire suit provided by the present invention has at least the following beneficial effects:

[0039] First, the three-dimensional human body models of firefighters without any clothes and wearing fire suits were established respectively. The differences between firefighters wearing fire suits and not wearing any clothes reflected by these two three-dimensional models include the contact area between the clothes and the skin surface of each part of the human body when the firefighters wear fire suits, and the thickness of the air layer between the clothes and the skin surface of each part of the human body. Among them, the size of the space under the clothes (i.e., the thickness of the air layer) is an important factor affecting the fit of the clothes. If the air layer under the clothes is too small, the heat flow is easy to pass through. If the air layer is too large, convection is easy to occur. Therefore, the present invention determines the thickness of the air layer between the clothes and the skin surface of each part of the human body when the firefighters wear fire suits, and combines the contact area between the clothes and the skin surface of each part of the human body when the firefighters wear fire suits to evaluate the fit of the firefighters and the fire suits, which can effectively improve the evaluation effect. In addition, when judging the fit based on the thickness of the air layer and the contact area, different parts of the human body are judged separately, which can further improve the fit evaluation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] One or more embodiments are exemplarily described by the pictures in the corresponding drawings, and these exemplary descriptions do not constitute limitations on the embodiments.

[0041] Figure 1 is a flow chart of a method for evaluating the fit between a firefighter and a fire suit provided according to an embodiment of the present invention;

[0042] Figure 2 is a schematic diagram of calculating the thickness of an air layer according to an embodiment of the present invention;

[0043] Figure 3 A firefighter and fire suit fit evaluation diagram according to an embodiment of the present invention is provided. Figure 1 ;

[0044] Figure 4 A firefighter and fire suit fit evaluation diagram according to an embodiment of the present invention is provided. Figure 2 ;

[0045] Figure 5 is a schematic diagram of a device for evaluating the fit between a firefighter and a fire suit provided according to an embodiment of the present invention;

[0046] Figure 6 It is a structural schematic diagram of a computer device provided according to an embodiment of the present invention. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. However, it will be appreciated by those skilled in the art that in the embodiments of the present invention, many technical details are proposed in order to enable the reader to better understand the present invention. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present invention can be implemented. The division of the following embodiments is for the convenience of description and should not constitute any limitation on the specific implementation of the present invention. The various embodiments can be combined and referenced with each other without contradiction.

[0048] One embodiment of the present invention relates to a method for evaluating the fit of a firefighter and a fire suit. The implementation details of the method for evaluating the fit of a firefighter and a fire suit of this embodiment are described in detail below. The following content is only the implementation details provided for ease of understanding and is not necessary for implementing this solution.

[0049] The specific process of the method for evaluating the fit between a firefighter and a fire suit in this embodiment can be as follows: Figure 1 As shown, including:

[0050] Step 101 , three-dimensional scanning is performed on the body of the firefighter when the firefighter is not wearing any clothes and when the firefighter is wearing a fire suit, to obtain a three-dimensional clean body model and a dressed body model of the firefighter.

[0051] Specifically, a 3D scanner is used to scan the body of a firefighter without any clothes to obtain a 3D net body model of the firefighter, and a 3D scanner is used to scan the body of a firefighter wearing a fire suit to obtain a dressed body model of the firefighter. When scanning the body of a firefighter without any clothes and the body of a firefighter wearing a fire suit, the firefighter is in the same posture.

[0052] In the specific implementation, such as Figure 2 As shown, when performing three-dimensional scanning on the human body of a firefighter without any clothes and the human body in a fire suit respectively, the three-dimensional point cloud data of the corresponding models of the two are first obtained, and then the three-dimensional point cloud data corresponding to the two are respectively encapsulated into two polygonal models, and the mesh doctor of Geomagic software is used for detection, and the holes, sharp edges and irregularities in the two polygonal models are repaired respectively. After the repair, the mesh doctor is used for detection again. If there are still missing parts, the above method is used to repair them again until the model is completely repaired. Finally, the two repaired polygonal models are used as the three-dimensional net body model and the clothed human body model of the firefighter respectively, so that the subsequent data can be calculated based on these two models.

[0053] Among them, when using the Geomagic software's Mesh Doctor to detect and repair the holes in the two polygonal models, small holes are repaired by curvature filling, and large holes are repaired by using the bridging tool to turn the large holes into small holes and then using the curvature filling method.

[0054] In one example, before the three-dimensional point cloud data corresponding to the two are respectively encapsulated into two polygonal models, the miscellaneous points and noise points in the three-dimensional point cloud data corresponding to the two are first eliminated, and a non-uniform curvature sampling method is used. According to the curvature of various parts of the firefighter's body, the sampling points are increased in the area where the curvature is greater than a preset threshold in the three-dimensional point cloud data corresponding to the two, and the sampling points are reduced in the area where the curvature is less than or equal to the preset threshold, so as to obtain the optimized three-dimensional point cloud data corresponding to the two, and complete the dual optimization processing of the quality and quantity of the three-dimensional point cloud data.

[0055] Step 102, obtaining the skin area of ​​each part of the firefighter's body that is in direct contact with the fire suit and the skin area of ​​each part of the firefighter's body that is covered by the fire suit based on the three-dimensional net body model and the clothed body model, so as to determine the ratio coefficient of the contact area between the firefighter's clothes and the skin surface of each part of the body when the firefighter wears the fire suit.

[0056] Specifically, a chromatographic deviation analysis is first performed on the three-dimensional clean body model and the dressed human body model. The chromatographic deviation analysis can display the difference between the three-dimensional clean body model and the dressed human body model through color coding, so as to obtain the skin area of ​​each part of the firefighter's body that is in direct contact with the fire suit and the skin area of ​​each part of the firefighter's body that is covered by the fire suit through the difference results between the three-dimensional clean body model and the dressed human body model displayed by color coding, and then obtain the ratio coefficient of the contact area between the clothes and the skin surface of each part of the body when the firefighter wears the fire suit.

[0057] Among them, the ratio coefficient of the contact area between the firefighter's clothing and the skin surface of each part of the human body when the firefighter wears the fire suit is expressed by the following formula:

[0058]

[0059] Where Acontact represents the skin area of ​​a certain part of the firefighter's body that is in direct contact with the fire suit, and Acovered represents the skin area of ​​a certain part of the firefighter's body that is covered by the fire suit.

[0060] Table 1 of this embodiment shows specific values ​​of the ratio coefficients of the skin area of ​​each part of the firefighter's body that is in direct contact with the fire suit, the skin area of ​​each part of the firefighter's body that is covered by the fire suit, and the contact area between the firefighter's clothes and the skin surface of each part of the body when the firefighter wears the fire suit:

[0061] Table 1

[0062] Human body parts Acontact(cm2) Acovered(cm2) CA Chest 1600 2000 0.80 waist 1200 1800 0.67 arm 500 800 0.63 thigh 1000 1500 0.67 Calf 600 1200 0.50

[0063] Step 103, obtaining the first volume and the first side surface area of ​​each part of the human body when the firefighter is not wearing any clothes according to the three-dimensional net body model, and obtaining the second volume and the second side surface area of ​​each part of the human body when the firefighter is wearing a fire suit according to the dressed human body model.

[0064] Specifically, the above-mentioned chromatographic deviation analysis is used to display the difference results between the three-dimensional clean body model and the dressed body model through color coding, so that the three-dimensional clean body model and the dressed body model can be divided into different areas, so as to obtain the first volume and first side surface area of ​​each part of the human body when the firefighter is not wearing any clothes, and obtain the second volume and second side surface area of ​​each part of the human body when the firefighter wears fire suits based on the dressed body model.

[0065] Step 104, determining the thickness of the air layer between the firefighter's clothes and the skin surface of each part of the body when the firefighter wears the fire suit through the first volume, the first side surface area, the second volume and the second side surface area of ​​each part of the body of the firefighter.

[0066] Among them, the thickness of the air layer between the firefighter's clothes and the skin surface of each part of the human body when the firefighter wears the fire suit is expressed by the following formula:

[0067]

[0068] In the formula, D represents the thickness of the air layer, V1 represents the first volume, V2 represents the second volume, S1 represents the first side surface area, and S2 represents the second side surface area.

[0069] Table 1 of this embodiment shows the first volume, first side surface area, second volume, second side surface area of ​​various parts of the human body of a firefighter, and the thickness of the air layer between the clothes and the skin surface of various parts of the human body when the firefighter wears the fire suit:

[0070] Table 2

[0071] Location <![CDATA[V1(cm3)]]> <![CDATA[V2(cm3)]]> <![CDATA[S1(cm3)]]> <![CDATA[S2(cm3)]]> D(cm) Chest 8500 8000 2000 1900 6.67 waist 6000 5800 1800 1700 6.67 arm 1200 1100 800 750 4.00 thigh 5000 4800 1500 1400 6.67 Calf 3000 2800 1200 1150 4.44

[0072] In one example, before executing the above steps 102 to 104 , the 3D clean body model and the clothed body model are first imported into Geomagic Wrap to manually align the 3D clean body model and the clothed body model according to the marker points or feature points in the 3D clean body model and the clothed body model.

[0073] Step 105, evaluating the fit of the firefighter and the fire suit based on the ratio coefficient of the contact area between the fire suit and the skin surface of each part of the human body when the firefighter wears the fire suit, and the thickness of the air layer between the fire suit and the skin surface of each part of the human body.

[0074] Specifically, the fit assessment process for firefighters and fire suits can be found in Figure 3 and Figure 4 After obtaining the ratio coefficient of the contact area between the firefighters' fire suits and the skin surface of various parts of the human body, it is compared with the standard when the firefighters' fire suits are loose and the standard when the firefighters' fire suits are tight, so as to evaluate the fit between the firefighters and the fire suits.

[0075] In this embodiment, the fit between the firefighter and the fire suit is evaluated by the following formula:

[0076]

[0077] In the formula, F fit represents the result of fit evaluation, w i represents the preset weight of the i-th human body part, and the preset weight of each human body part is set according to the importance of the part. For example, the chest and back have higher weights than shoulders and limbs. i The ratio coefficient representing the contact area of ​​the i-th human body part, D air,i Represents the thickness of the air layer at the i-th body part.

[0078] In this embodiment, firstly, a three-dimensional human body model of a firefighter without any clothes and a firefighter wearing a fire suit is established respectively. The difference between the firefighter wearing a fire suit and not wearing any clothes reflected by these two three-dimensional models is used to determine the contact area between the clothes and the skin surface of each part of the human body when the firefighter wears the fire suit and the thickness of the air layer between the clothes and the skin surface of each part of the human body. Among them, the size of the space under the clothes is an important factor affecting the fit of the clothes. If the air layer under the clothes is too small, the heat flow can easily pass through. If the air layer is too large, convection is easy to occur. Therefore, this embodiment determines the thickness of the air layer between the clothes and the skin surface of each part of the human body when the firefighter wears the fire suit, and combines the contact area between the clothes and the skin surface of each part of the human body when the firefighter wears the fire suit to evaluate the fit of the firefighter and the fire suit, which can effectively improve the evaluation effect. In addition, when judging the fit based on the air layer thickness and the contact area, different parts of the human body are judged separately, which can further improve the fit evaluation effect.

[0079] In some embodiments, after obtaining the fit assessment results of the firefighter and the fire suit through the scheme of the above embodiment, it can be combined with the subjective assessment results of the fit of the firefighter and the fire suit to realize the fit assessment of the firefighter and the fire suit, so as to further improve the assessment accuracy.

[0080] It is understandable that the method for evaluating the fit between a firefighter and a fire uniform described in any of the above embodiments can also be used to evaluate the fit between other types of clothing and the human body, and has a wide range of usage scenarios.

[0081] The step division of the various methods above is only for clear description. When implemented, 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 protection scope of the present invention. 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 protection scope of the invention.

[0082] Another embodiment of the present invention relates to a device for evaluating the fit of a firefighter and a fire suit. The implementation details of the device for evaluating the fit of a firefighter and a fire suit of this embodiment are described in detail below. The following content is only provided for the convenience of understanding the implementation details and is not necessary for implementing this solution. The schematic diagram of the device for evaluating the fit of a firefighter and a fire suit of this embodiment can be as follows: Figure 5 As shown, it includes: a model building module 501, a first parameter acquisition module 502, a second parameter acquisition module 503 and a fit evaluation module 504.

[0083] Specifically, the model building module 501 is used to perform three-dimensional scanning on the body of the firefighter when not wearing any clothes and when wearing firefighter uniforms, respectively, to obtain a three-dimensional net body model and a clothed body model of the firefighter.

[0084] The first parameter acquisition module 502 is used to obtain the skin area of ​​each part of the firefighter's body that is in direct contact with the fire suit and the skin area of ​​each part of the firefighter's body that is covered by the fire suit based on the three-dimensional net body model and the clothed body model, so as to determine the ratio coefficient of the contact area between the clothes and the skin surface of each part of the body when the firefighter wears the fire suit.

[0085] The second parameter acquisition module 503 is used to acquire the first volume and the first side surface area of ​​each part of the human body when the firefighter is not wearing any clothes according to the three-dimensional net body model, and acquire the second volume and the second side surface area of ​​each part of the human body when the firefighter is wearing a fire suit according to the dressed human body model;

[0086] The thickness of the air layer between the clothes and the skin surface of various parts of the firefighter's body when the firefighter wears the fire suit is determined by the first volume, the first side surface area, the second volume and the second side surface area of ​​various parts of the firefighter's body.

[0087] The fit evaluation module 504 is used to determine the thickness of the air layer between the firefighter's clothing and the skin surface of various parts of the human body when the firefighter wears the fire suit, so as to evaluate the fit between the firefighter and the fire suit.

[0088] It is not difficult to find that this embodiment is a device embodiment corresponding to the above method embodiment, and this embodiment can be implemented in conjunction with the above method embodiment. The relevant technical details and technical effects mentioned in the above embodiment are still valid in this embodiment, and in order to reduce repetition, they are not repeated here. Accordingly, the relevant technical details mentioned in this embodiment can also be applied in the above embodiment.

[0089] It is worth mentioning that all modules involved in this embodiment are logic modules. In practical applications, a logic unit can be a physical unit, a part of a physical unit, or a combination of multiple physical units. In addition, in order to highlight the innovative part of the present invention, this embodiment does not introduce units that are not closely related to solving the technical problem proposed by the present invention, but this does not mean that there are no other units in this embodiment.

[0090] Another embodiment of the present invention relates to a computer device, such as Figure 6 As shown, it includes: at least one processor 601; and a memory 602 that is communicatively connected to the at least one processor 601; wherein the memory 602 stores instructions that can be executed by the at least one processor 601, and the instructions are executed by the at least one processor 601 so that the at least one processor 601 can execute the method for evaluating the fit between a firefighter and a fire suit in the above-mentioned embodiments.

[0091] Among them, the memory and the processor are connected in a bus manner, and the bus may include any number of interconnected buses and bridges, and the bus connects various circuits of one or more processors and memories together. The bus can also connect various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface between the bus and the transceiver. The transceiver can be one element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on a transmission medium. The data processed by the processor is transmitted on a wireless medium via an antenna, and further, the antenna also receives data and transmits the data to the processor.

[0092] The processor is responsible for managing the bus and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions. Memory can be used to store data used by the processor when performing operations.

[0093] Another embodiment of the present invention relates to a computer-readable storage medium storing a computer program, which implements the above method embodiment when executed by a processor.

[0094] That is, those skilled in the art can understand that all or part of the steps in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a program, and the program is stored in a storage medium, including a number of instructions for a device (which can be a single-chip microcomputer, chip, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as: ROM), random access memory (Random Access Memory, referred to as: RAM), disk or optical disk and other media that can store program codes.

[0095] Those skilled in the art will appreciate that the above embodiments are specific embodiments for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A method for evaluating the fit between a firefighter and a fire suit, characterized in that: include: The firefighter's body without any clothes and the firefighter's body in fire suit are scanned in three dimensions to obtain a three-dimensional clean body model and a dressed body model of the firefighter; The skin area of ​​each part of the firefighter's body that is in direct contact with the fire suit and the skin area of ​​each part of the firefighter's body that is covered by the fire suit are obtained based on the three-dimensional net body model and the dressed body model, so as to determine the ratio coefficient of the contact area between the firefighter's clothes and the skin surface of each part of the body when the firefighter wears the fire suit; Obtaining a first volume and a first side surface area of ​​each part of the human body when the firefighter is not wearing any clothes according to the three-dimensional net body model, and obtaining a second volume and a second side surface area of ​​each part of the human body when the firefighter is wearing a fire suit according to the dressed human body model; Determine the thickness of the air layer between the firefighter's clothes and the skin surface of each part of the human body when the firefighter wears the fire suit through the first volume, the first side surface area, the second volume and the second side surface area of ​​each part of the human body of the firefighter; The fit of the firefighter and the fire suit is evaluated based on the ratio coefficient of the contact area between the clothes and the skin surface of various parts of the human body when the firefighter wears the fire suit, as well as the thickness of the air layer between the clothes and the skin surface of various parts of the human body.

2. The method for evaluating the fit between a firefighter and a fire suit according to claim 1, characterized in that: The three-dimensional scanning of the firefighter's body when not wearing any clothes and the firefighter's body when wearing firefighting clothes is performed respectively to obtain the firefighter's three-dimensional clean body model and the dressed body model, including: Perform three-dimensional scanning on the body of the firefighter when not wearing any clothes and when wearing fire suits, and obtain the corresponding three-dimensional point cloud data of the two; Encapsulate the three-dimensional point cloud data corresponding to each of the two into two polygonal models respectively; The mesh doctor of Geomagic software was used to detect and repair the holes, sharp edges and irregularities in the two polygonal models. The two repaired polygonal models were used as the firefighter's three-dimensional clean body model and dressed body model respectively.

3. The method for evaluating the fit between a firefighter and a fire suit according to claim 2, characterized in that: The mesh doctor inspection using Geomagic software repairs holes, sharp edges and irregularities in the two polygonal models, including: For small holes, curvature filling is used to repair them; For large holes, the bridging tool is used to convert the large holes into small holes, and then the curvature filling method is used to repair them.

4. The method for evaluating the fit between a firefighter and a fire suit according to claim 3, characterized in that: Before respectively encapsulating the three-dimensional point cloud data corresponding to the two into two polygonal models, the method further includes: Eliminate the clutter and noise in the three-dimensional point cloud data corresponding to each other; A non-uniform curvature sampling method is adopted. According to the curvature of various parts of the firefighter's body, sampling points are added to the area where the curvature is greater than the preset threshold in the three-dimensional point cloud data corresponding to the two, and sampling points are reduced in the area where the curvature is less than or equal to the preset threshold, so as to obtain the optimized three-dimensional point cloud data corresponding to the two.

5. The method for evaluating the fit between a firefighter and a fire suit according to claim 1, characterized in that: The method of obtaining the skin area of ​​each part of the firefighter's body that is in direct contact with the fire suit and the area of ​​each part of the firefighter's body that is covered by the fire suit based on the three-dimensional clean body model and the dressed body model includes: Perform color spectrum deviation analysis on 3D net body models and clothed mannequins to show the differences between 3D net body models and clothed mannequins through color coding; The difference results between the three-dimensional clean body model and the clothed body model displayed by color coding are used to obtain the skin area of ​​each part of the firefighter's body that is in direct contact with the fire suit and the area of ​​each part of the firefighter's body that is covered by the fire suit.

6. The method for evaluating the fit between a firefighter and a fire suit according to claim 1, characterized in that: The thickness of the air layer between the firefighter's clothing and the skin surface of each part of the human body when the firefighter wears the fire suit is expressed by the following formula: In the formula, D represents the thickness of the air layer, V1 represents the first volume, V2 represents the second volume, S1 represents the first side surface area, and S2 represents the second side surface area.

7. The method for evaluating the fit between a firefighter and a fire suit according to claim 1, characterized in that: The fit of the firefighter and the fire suit is evaluated using the following formula: In the formula, F fit represents the result of fit evaluation, w i represents the preset weight of the i-th human body part, R i The ratio coefficient representing the contact area of ​​the i-th human body part, D air,i Represents the thickness of the air layer at the i-th body part.

8. A device for evaluating the fit between a firefighter and a fire suit, characterized in that: include: The model building module is used to perform three-dimensional scanning on the human body of the firefighter when not wearing any clothes and when wearing firefighter uniforms, respectively, to obtain a three-dimensional net body model and a dressed human body model of the firefighter; The first parameter acquisition module is used to obtain the skin area of ​​each part of the firefighter's body that is in direct contact with the fire suit and the skin area of ​​each part of the firefighter's body that is covered by the fire suit based on the three-dimensional clean body model and the dressed body model, so as to determine the ratio coefficient of the contact area between the clothes and the skin surface of each part of the body when the firefighter wears the fire suit; A second parameter acquisition module is used to acquire a first volume and a first side surface area of ​​each part of the human body when the firefighter is not wearing any clothes according to the three-dimensional net body model, and to acquire a second volume and a second side surface area of ​​each part of the human body when the firefighter is wearing a fire suit according to the dressed human body model; Determine the thickness of the air layer between the firefighter's clothes and the skin surface of each part of the human body when the firefighter wears the fire suit through the first volume, the first side surface area, the second volume and the second side surface area of ​​each part of the human body of the firefighter; The fit evaluation module is used to determine the thickness of the air layer between the firefighter's clothing and the skin surface of various parts of the human body when the firefighter wears the fire suit, so as to evaluate the fit between the firefighter and the fire suit.

9. A computer device, characterized in that: include: at least one processor; And, a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the method for the fit of a firefighter and a fire suit as described in any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method for achieving fit between a firefighter and a firefighter uniform according to any one of claims 1 to 7 is implemented.

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