A bionic evaluation method and system for comfort of a car seat

Abstract

The application provides a bionic evaluation method and system for the comfort of an automobile seat. Joint angle, pressure value and temperature value of the bionic evaluation system for the comfort of the automobile seat on the automobile seat to be evaluated are collected, and joint angle evaluation indexes, pressure distribution evaluation indexes and regional temperature evaluation indexes are calculated. The comfort of the automobile seat to be evaluated is determined based on the joint angle evaluation indexes, the pressure distribution evaluation indexes and the regional temperature evaluation indexes. That is, the joint angle evaluation indexes, the pressure distribution evaluation indexes and the regional temperature evaluation indexes of the automobile seat to be evaluated are actually detected by the bionic evaluation device, and the comfort of the automobile seat to be evaluated is calculated by comprehensively considering the joint angle evaluation indexes, the pressure distribution evaluation indexes and the regional temperature evaluation indexes, so that the accuracy of the comfort evaluation of the automobile seat to be evaluated is improved.

Description

Technical Field

[0001] This application relates to the field of automotive seat testing technology, specifically to a biomimetic evaluation method and system for automotive seat comfort. Background Technology

[0002] With the increasing popularity of automobiles, cars have become one of the main tools for people's daily travel. Seat comfort has a significant impact on the long-distance driving experience and can even affect people's impression of the vehicle brand. Therefore, car seat comfort has become an important factor influencing consumers' car purchase decisions.

[0003] From a driving experience perspective, during long drives, drivers need to maintain a seated posture for extended periods. If the seat is not comfortable, it can easily cause discomfort in various parts of the body. For example, an improperly positioned headrest can cause continuous tension in the driver's neck muscles, leading to neck pain. Furthermore, during sudden braking or acceleration, it can impact the cervical spine, affecting concentration and reducing driving enjoyment. In terms of fatigue relief, a comfortable seat, through its reasonable support and ergonomic design, effectively distributes body pressure and reduces muscle fatigue. The role of car seat comfort in ensuring driving safety is also undeniable. In short, seat comfort has become a crucial factor influencing driving experience, fatigue relief, and driving safety.

[0004] Traditional testing equipment for car seat comfort is scarce, and testing methods have many drawbacks. Currently, most tests rely heavily on subjective feedback from testers. Due to differences in physical conditions (height, weight, body type, etc.) and subjective feelings among different testers, the evaluation criteria for seat comfort vary. This makes the test results susceptible to individual differences, lacking consistency and accuracy, and failing to truly reflect the actual comfort level of the seat. Furthermore, traditional testing methods lack precise and objective quantitative indicators. In actual riding, different parts of the cervical spine experience varying pressure, and the uniformity of pressure distribution is crucial for cervical spine comfort. However, traditional methods struggle to obtain this detailed data, making it impossible to accurately determine the performance of the seat in terms of pressure support. Therefore, there is an urgent need for a method that can quantitatively and accurately evaluate seat comfort. Summary of the Invention

[0005] To address the aforementioned technical problems, this application is proposed. Embodiments of this application provide a biomimetic evaluation method and system for automobile seat comfort.

[0006] According to one aspect of this application, a biomimetic evaluation method for automobile seat comfort is provided, applied to a biomimetic evaluation system for automobile seat comfort. The biomimetic evaluation system for automobile seat comfort includes: a cervical spine exoskeleton module, a cervical spine silicone muscle module, a cervical spine mid-axis skeleton module, an angle sensor module, a pressure sensor module, and a temperature sensor module. The cervical spine exoskeleton module is used to biomimeticly mimic the flexible flexion of the cervical spine. The cervical spine silicone muscle module is embedded within the cervical spine exoskeleton module to simulate neck muscle support and tissue slack. The cervical spine mid-axis skeleton module is connected to the cervical spine exoskeleton module to achieve synchronous torsion between the cervical spine mid-axis skeleton module and the cervical spine exoskeleton module. The angle sensor module, the pressure sensor module, and the temperature sensor module respectively collect angle values, pressure values, and temperature values ​​of corresponding areas. The automobile seat comfort... The biomimetic evaluation method includes: collecting the cervical pivot joint angle and cervical inferior pivot joint angle of the biomimetic evaluation system for car seat comfort on the car seat to be evaluated; calculating the joint angle evaluation index of the car seat to be evaluated based on the cervical pivot joint angle and the cervical inferior pivot joint angle; collecting the pressure value of the biomimetic evaluation system for car seat comfort on the car seat to be evaluated; calculating the pressure distribution evaluation index of the car seat to be evaluated based on the pressure value; collecting the temperature value of the contact area between the biomimetic evaluation system for car seat comfort and the car seat to be evaluated; calculating the regional temperature evaluation index of the car seat to be evaluated based on the temperature value; and determining the comfort level of the car seat to be evaluated based on the joint angle evaluation index, the pressure distribution evaluation index, and the regional temperature evaluation index.

[0007] In one embodiment, the bionic evaluation system for collecting the comfort of the car seat on the car seat to be evaluated includes: collecting the pressure values ​​of the bionic evaluation system for the comfort of the car seat at multiple different locations on the car seat to be evaluated; and calculating the pressure distribution evaluation index based on the pressure values ​​at the multiple different locations.

[0008] In one embodiment, calculating the pressure distribution evaluation index based on the pressure values ​​at the plurality of different locations includes: the calculation formula for the pressure distribution evaluation index is: ; in, P As an evaluation index for pressure distribution, P j For the first j The actual pressure value detected by the pressure sensor. For the first j The maximum pressure value that a corresponding part of the pressure sensor may withstand. For the first j The weight of pressure in each part.

[0009] In one embodiment, calculating the regional temperature evaluation index of the car seat to be evaluated based on the temperature value includes: the calculation formula for the regional temperature evaluation index is: ; in, S As a regional temperature evaluation index, T This refers to the real-time temperature detected by a regional temperature sensor. T mid For the ideal intermediate temperature, T max and T min These represent the upper and lower limits of the comfortable temperature range for the cervical spine.

[0010] In one embodiment, determining the comfort level of the car seat to be evaluated based on the joint angle evaluation index, the pressure distribution evaluation index, and the regional temperature evaluation index includes: if any one of the joint angle evaluation index, the pressure distribution evaluation index, and the regional temperature evaluation index is less than a corresponding set threshold, then the comfort level of the car seat to be evaluated is determined to be poor.

[0011] In one embodiment, determining the comfort level of the car seat to be evaluated based on the joint angle evaluation index, the pressure distribution evaluation index, and the regional temperature evaluation index includes: weighted summation of the joint angle evaluation index, the pressure distribution evaluation index, and the regional temperature evaluation index to obtain the comfort level of the car seat to be evaluated.

[0012] According to another aspect of this application, a biomimetic evaluation system for automotive seat comfort is provided, comprising: a cervical exoskeleton module for biomimetic flexible flexion of the cervical spine; a cervical silicone muscle module embedded within the cervical exoskeleton module for simulating neck muscle support and tissue slack; a cervical mid-axis skeleton module connected to the cervical exoskeleton module for synchronous torsion of the cervical mid-axis skeleton module and the cervical exoskeleton module; an angle sensor module disposed at the cervical mid-axis skeleton module for collecting angle values ​​of corresponding areas; a pressure sensor module disposed at the cervical exoskeleton module for collecting pressure values ​​of corresponding areas; a temperature sensor module disposed at the cervical exoskeleton module for collecting temperature values ​​of corresponding areas; and a control module connected to the angle sensor module, the pressure sensor module, and the temperature sensor module for executing the method described in any of the above embodiments.

[0013] This application provides a biomimetic evaluation method and system for automobile seat comfort. The biomimetic evaluation system for automobile seat comfort includes: a cervical spine exoskeleton module, a cervical spine silicone muscle module, a cervical spine central axis skeleton module, an angle sensor module, a pressure sensor module, and a temperature sensor module. The cervical spine exoskeleton module is used to mimic the flexible flexion of the cervical spine. The cervical spine silicone muscle module is embedded within the cervical spine exoskeleton module to simulate neck muscle support and tissue lag. The cervical spine central axis skeleton module is connected to the cervical spine exoskeleton module to achieve synchronous torsion between the two modules. The angle sensor module, pressure sensor module, and temperature sensor module respectively collect angle values, pressure values, and temperature values ​​for corresponding areas. The biomimetic evaluation method for automobile seat comfort includes: collecting the cervical central axis joint angle and cervical inferior axis joint angle of the biomimetic evaluation system on the automobile seat to be evaluated. The evaluation process involves three key aspects: First, the joint angle evaluation index of the car seat to be evaluated is calculated based on the cervical pivot joint angle and the cervical subpivot joint angle. Second, the pressure values ​​of the car seat comfort evaluation system on the car seat are collected. Third, the pressure distribution evaluation index of the car seat is calculated based on the pressure values. Fourth, the temperature values ​​of the contact area between the car seat comfort evaluation system and the car seat are collected. Fifth, the regional temperature evaluation index of the car seat is calculated based on the temperature values. Finally, the comfort level of the car seat is determined based on the joint angle evaluation index, pressure distribution evaluation index, and regional temperature evaluation index. In other words, the joint angle evaluation index, pressure distribution evaluation index, and regional temperature evaluation index of the car seat to be evaluated are actually detected by the bionic evaluation device, and the comfort level of the car seat is calculated by combining these three indicators, thereby improving the accuracy of the comfort evaluation of the car seat. Attached Figure Description

[0014] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0015] Figure 1 This is a schematic diagram of the overall structure of a biomimetic evaluation system for automobile seat comfort provided in an exemplary embodiment of this application.

[0016] Figure 2 This is a partial three-dimensional structural schematic diagram of a biomimetic evaluation system for automobile seat comfort provided in an exemplary embodiment of this application.

[0017] Figure 3This is a partial cross-sectional structural schematic diagram of a biomimetic evaluation system for automobile seat comfort provided in an exemplary embodiment of this application.

[0018] Figure 4 This is a partially exploded structural diagram of a biomimetic evaluation system for automobile seat comfort provided in an exemplary embodiment of this application.

[0019] Figure 5 This is a schematic diagram of the cervical spine central axis skeleton module of a biomimetic evaluation system for automobile seat comfort provided in an exemplary embodiment of this application.

[0020] Figure 6 This is a flowchart illustrating a biomimetic evaluation method for automobile seat comfort provided in an exemplary embodiment of this application. Detailed Implementation

[0021] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein.

[0022] Figure 1 This is a schematic diagram of the overall structure of a biomimetic evaluation system for automobile seat comfort provided in an exemplary embodiment of this application. Figure 2 This is a partial three-dimensional structural schematic diagram of a biomimetic evaluation system for automobile seat comfort provided in an exemplary embodiment of this application. Figure 3 This is a partial cross-sectional structural schematic diagram of a biomimetic evaluation system for automobile seat comfort provided in an exemplary embodiment of this application. Figure 4 This is a partially exploded structural diagram of a biomimetic evaluation system for automobile seat comfort provided in an exemplary embodiment of this application. Figure 5 This is a schematic diagram of the cervical spine central axis skeleton module of a biomimetic evaluation system for automobile seat comfort provided in an exemplary embodiment of this application. Figure 1-5As shown, the biomimetic evaluation system for car seat comfort includes: a cervical exoskeleton module 1, a cervical silicone muscle module 2, a cervical mid-axis skeleton module 3, an angle sensor module 4, a pressure sensor module 5, and a temperature sensor module 6. The cervical exoskeleton module 1 is used to mimic the flexible flexion of the cervical spine. The cervical silicone muscle module 2 is embedded within the cervical exoskeleton module 1 to simulate neck muscle support and tissue slack. The cervical mid-axis skeleton module 3 connects to the cervical exoskeleton module 1 to achieve synchronous torsion between the cervical mid-axis skeleton module and the cervical exoskeleton module. The angle sensor module 4 is located within the cervical spine... The axial skeleton module 3 is used to collect the angle value of the corresponding area. The pressure sensor module 5 is set at the cervical spine exoskeleton module 1 to collect the pressure value of the corresponding area. The temperature sensor module 6 is set at the cervical spine exoskeleton module 1 to collect the temperature value of the corresponding area. The control module (not shown in the figure, but may be a controller or computer or other device capable of outputting control commands and performing calculations) is connected to the angle sensor module 4, pressure sensor module 5 and temperature sensor module 6 and is used to control the angle sensor module 4, pressure sensor module 5 and temperature sensor module 6 to perform corresponding actions.

[0023] Furthermore, such as Figure 2-5As shown, the cervical exoskeleton module 1 includes a cervical top joint 1-1, a cervical hinge 1-2, a cervical joint 1-3, a cervical upper central joint 1-4, a central joint bearing 1-5, a cervical lower central joint 1-6, a cervical base joint 1-7, a cervical base bearing 1-8, a central axial bone base bearing 1-9, and a cervical connecting base 1-10. The cervical connecting base 1-10 is fixed to the cervical base on the thoracic vertebrae of the dummy. The cervical top joint 1-1 is connected to the cervical central axial skeleton module 3, and thus to the head. The cervical top joint 1-1, cervical hinge 1-2, and cervical joint 1-3... 3. The hinged joints of the upper cervical central joints 1-4, lower cervical central joints 1-5, and cervical base joints 1-6 enable flexible flexion of the biomimetic cervical spine for testing. The cervical exoskeleton module 1 is divided into upper and lower parts based on the cervical central joints. The upper cervical central joint 1-4, under the action of the lower joint bearing 1-5, works with the lower cervical central joint 1-6 to drive the upper cervical spine to rotate around its axis. The cervical base joint 1-7 works with the cervical base bearing 1-8 to drive the entire biomimetic cervical spine to rotate around its axis. The coordination of these two rotating joints simulates the torsional movement of the entire head and neck, ensuring the biomimetic nature of the cervical spine structure. The flexible flexion damping structure of the cervical spine silicone muscle module 2 enables the bending and stretching movements of the biomimetic cervical spine, effectively ensuring the biomimetic nature of the cervical spine tissue and structure. The cervical spine axial skeleton module 3 includes 3-1 a cervical connecting top cover, 3-2 a cervical upper pivot joint, 3-3 an upper damping axial bone, 3-4 a cervical central pivot joint, 3-5 a lower damping axial bone, 3-6 a cervical lower pivot joint, and 3-7 a central pivot base. The cervical top cover joint 1-1 is connected to the cervical connecting top cover 3-1. The cervical spine axial skeleton module 3 is connected to the cervical spine exoskeleton module 1 with the cooperation of the central pivot base 3-7 and the central pivot base bearing 1-9, realizing synchronous torsion of the cervical spine axial skeleton module 3 and the cervical spine exoskeleton module 1. This ensures the accuracy of the angle sensor module 4 in measuring the angles of two important joints (central axis and lower pivot joint) in the bending direction. The upper cervical spine is closely connected to the head, and comfort is mainly affected by the weight of the head. Therefore, the influence of the upper pivot joint angle on comfort is negligible. The angle sensor module 4 consists of a first angle sensor 4-1 and a second angle sensor 4-2 for acquiring the tilt angle. The pressure sensor module 5 consists of an upper pressure sensor 5-1, a middle pressure sensor 5-2, and a lower pressure sensor 5-3.The upper pressure sensor 5-1 in pressure sensor module 5 measures pressure in a direction perpendicular to the contact plane between the sensor and the upper cervical spine. It is used to detect the pressure distribution of head weight on the upper cervical spine under seat constraints (i.e., different driving postures). The middle pressure sensor 5-2 also measures pressure in a direction perpendicular to the contact plane between the sensor and the middle cervical spine. This area includes forces from head weight transmission and neck muscle support, making it a region where neck stress is concentrated. Due to the influence of different neck postures such as flexion and extension, the pressure distribution in this area has a significant impact on neck comfort. The lower pressure sensor 5-3 is located near the thoracic spine and mainly monitors pressure changes in the contact area between the lower cervical spine and the seat back. This area is the support point for the entire head and neck and is also a high-incidence area for driver's shoulder and neck fatigue and muscle soreness, so it also needs to be monitored closely. Its measured pressure direction is perpendicular to the plane between the sensor and this contact area and points towards the cervical spine. When the shape and angle of the seat back change, or when the human sitting posture is adjusted, the sensor pressure direction will also change dynamically to reflect the actual stress in this area. Temperature sensor module 6 is a regional temperature sensor located at the junction of the neck and shoulder behind the cervical spine. It is used to detect temperature changes on the seat surface and then evaluate the heat dissipation and heat preservation performance of the seat to ensure that the cervical spine is at a comfortable temperature.

[0024] Figure 6 This is a flowchart illustrating a biomimetic evaluation method for automobile seat comfort provided in an exemplary embodiment of this application. This biomimetic evaluation method for automobile seat comfort is applied to the aforementioned biomimetic evaluation system for automobile seat comfort, such as... Figure 6 As shown, the biomimetic evaluation method for car seat comfort includes the following steps: Step 110: Collect the cervical pivot joint angle and cervical inferior pivot joint angle on the car seat to be evaluated using a bionic evaluation system for car seat comfort.

[0025] This application uses a bionic evaluation system for car seat comfort to collect the cervical pivot joint angle and cervical subpivot joint angle on the car seat to be evaluated, in order to determine the angles of two important joints of the human cervical spine in a comfortable sitting posture.

[0026] Step 120: Calculate the joint angle evaluation index of the car seat to be evaluated based on the cervical central axis joint angle and the cervical inferior axis joint angle.

[0027] This application evaluates the comfort of a car seat by collecting data on the cervical pivot joint angle and the cervical inferior pivot joint angle, and by calculating the joint angle evaluation index of the car seat to be evaluated based on the cervical pivot joint angle and the cervical inferior pivot joint angle. The bionic evaluation system evaluates the degree of curvature of the car seat to be evaluated, thereby evaluating its comfort.

[0028] Step 130: Collect the pressure values ​​of the bionic evaluation system for car seat comfort on the car seat to be evaluated.

[0029] This application obtains the pressure values ​​of the bionic evaluation system for car seat comfort on the car seat to be evaluated, in order to know the distribution of the support pressure of the car seat on the bionic evaluation system for car seat comfort when the bionic evaluation system for car seat comfort is on the car seat to be evaluated.

[0030] Step 140: Calculate the pressure distribution evaluation index of the car seat to be evaluated based on the pressure value.

[0031] This application calculates the pressure distribution evaluation index of the car seat to be evaluated based on the pressure value distribution on the car seat to be evaluated by the bionic evaluation system for car seat comfort, so as to evaluate the force situation of the bionic evaluation system for car seat comfort on the car seat to be evaluated, thereby evaluating its comfort.

[0032] Step 150: Collect the temperature values ​​of the contact area between the bionic evaluation system for car seat comfort and the car seat to be evaluated.

[0033] This application obtains the temperature value of the contact area between the bionic evaluation system for car seat comfort and the car seat to be evaluated in order to understand the heat dissipation between the bionic evaluation system for car seat comfort and the car seat to be evaluated.

[0034] Step 160: Calculate the regional temperature evaluation index of the car seat to be evaluated based on the temperature value.

[0035] This application calculates the temperature evaluation index of the car seat to be evaluated based on the temperature value of the contact area between the bionic evaluation system for car seat comfort and the car seat to be evaluated, so as to evaluate the heat dissipation between the bionic evaluation system for car seat comfort and the car seat to be evaluated, thereby evaluating its comfort.

[0036] Step 170: Determine the comfort level of the car seat to be evaluated based on the joint angle evaluation index, pressure distribution evaluation index, and regional temperature evaluation index.

[0037] This application integrates multiple evaluation indicators, including joint angle evaluation index, pressure distribution evaluation index, and regional temperature evaluation index, to determine the comfort of the car seat to be evaluated. This allows for a quantitative evaluation of the comfort of the car seat from multiple dimensions, thereby improving its accuracy.

[0038] This application provides a biomimetic evaluation method for automobile seat comfort, applied to a biomimetic evaluation system for automobile seat comfort. The biomimetic evaluation system includes: a cervical spine exoskeleton module, a cervical spine silicone muscle module, a cervical spine central axis skeleton module, an angle sensor module, a pressure sensor module, and a temperature sensor module. The cervical spine exoskeleton module is used to mimic the flexible flexion of the cervical spine. The cervical spine silicone muscle module is embedded within the cervical spine exoskeleton module to simulate neck muscle support and tissue lag. The cervical spine central axis skeleton module is connected to the cervical spine exoskeleton module to achieve synchronous torsion between the two modules. The angle sensor module, pressure sensor module, and temperature sensor module respectively collect angle, pressure, and temperature values ​​for corresponding areas. The biomimetic evaluation method for automobile seat comfort includes: collecting the cervical central axis joint angle and cervical inferior axis joint angle of the biomimetic evaluation system on the automobile seat to be evaluated. Based on the cervical central axis joint angle and the cervical inferior axis joint angle, the joint angle evaluation index of the car seat to be evaluated is calculated; the pressure value of the bionic evaluation system for car seat comfort on the car seat to be evaluated is collected; based on the pressure value, the pressure distribution evaluation index of the car seat to be evaluated is calculated; the temperature value of the contact area between the bionic evaluation system for car seat comfort and the car seat to be evaluated is collected; based on the temperature value, the regional temperature evaluation index of the car seat to be evaluated is calculated; based on the joint angle evaluation index, pressure distribution evaluation index, and regional temperature evaluation index, the comfort level of the car seat to be evaluated is determined; that is, by actually detecting the joint angle evaluation index, pressure distribution evaluation index, and regional temperature evaluation index of the car seat to be evaluated through a bionic evaluation device, and comprehensively calculating the comfort level of the car seat to be evaluated, thereby improving the accuracy of the comfort evaluation of the car seat to be evaluated.

[0039] In one embodiment, step 130 can be implemented by: collecting pressure values ​​at multiple different locations on the car seat to be evaluated using a bionic evaluation system for car seat comfort; and calculating a pressure distribution evaluation index based on the pressure values ​​at multiple different locations.

[0040] This application uses pressure sensors placed at three different locations on the upper, middle, and lower cervical spine to collect pressure values ​​at these three locations, thereby determining the pressure value distribution between the bionic evaluation system for car seat comfort and the car seat to be evaluated when the system is in use.

[0041] In one embodiment, step 140 can be specifically implemented as follows: the calculation formula for the pressure distribution evaluation index is: ; in, P As an evaluation index for pressure distribution,P j For the first j The actual pressure value detected by the pressure sensor. For the first j The maximum pressure value that a corresponding part of the pressure sensor may withstand. For the first j The weight of pressure in each part.

[0042] This application collects pressure values ​​from three different locations on the upper, middle, and lower cervical spine, pre-sets the maximum pressure value that each part can withstand (which can be determined through experiments or theoretical calculations) and the corresponding pressure value weights, and calculates a pressure distribution evaluation index based on the three pressure values ​​to determine whether the pressure value distribution between the bionic evaluation system for car seat comfort and the car seat to be evaluated is reasonable, thereby achieving an evaluation of comfort from the perspective of pressure distribution.

[0043] In one embodiment, step 160 can be specifically implemented as follows: the calculation formula for the regional temperature evaluation index is: ; in, S As a regional temperature evaluation index, T This refers to the real-time temperature detected by a regional temperature sensor. T mid For the ideal intermediate temperature, T max and T min These represent the upper and lower limits of the comfortable temperature range for the cervical spine.

[0044] Based on research into human physiological needs and comfort, this application determines the comfortable temperature range for the contact area between the cervical spine and the seat: [ Furthermore, the temperature evaluation index is quantitatively calculated using the above formula to determine the degree of deviation between the real-time temperature and the upper and lower limits of the comfort temperature range, thereby enabling the evaluation of comfort from the perspective of temperature.

[0045] In one embodiment, step 170 can be implemented as follows: if any of the joint angle evaluation index, pressure distribution evaluation index, and regional temperature evaluation index is less than the corresponding set threshold, then the comfort level of the car seat to be evaluated is determined to be poor.

[0046] Specifically, when evaluating joint angle indicators J When the value is ≥0.8, the car seat being evaluated is considered to meet the comfort index of the cervical spine joint angle; when... P When the value is ≥0.9, the car seat to be evaluated is considered to meet the comfort index of cervical spine pressure distribution. TA value of ≥0.7 indicates that the car seat being evaluated meets the temperature comfort index for the cervical spine.

[0047] In one embodiment, step 170 can be implemented by weighted summation of joint angle evaluation index, pressure distribution evaluation index, and regional temperature evaluation index to obtain the comfort level of the car seat to be evaluated.

[0048] Specifically, in order to comprehensively consider the impact of joint angle, pressure distribution, and regional temperature on cervical spine comfort, this application constructs a comprehensive evaluation index. C The weighted average method was used to calculate the following: ; in, α, β, γ The weights for the joint angle evaluation index, pressure distribution evaluation index, and regional temperature evaluation index are determined based on their importance to cervical spine comfort. For example: α =0.4, β =0.4, γ =0.2. C The value ranges from 0 to 1, with a value closer to 1 indicating higher comfort for the cervical spine. To construct a complete quantitative evaluation system, the following evaluation criteria were determined through experiments: ; When comprehensive evaluation indicators C When the comprehensive evaluation index is <0.6, the car seat being evaluated is considered to have extremely poor cervical spine comfort, easily causing cervical spine fatigue, indicating a major design flaw that affects the driving and riding experience; when the comprehensive evaluation index is 0.6 ≤ C When the index is <0.8, the car seat being evaluated is considered to have a moderate effect on cervical spine comfort, indicating a relatively good performance, but further design and optimization are possible; when the comprehensive evaluation index is <0.8, the car seat being evaluated is considered to have a relatively good performance, but further design and optimization are possible. C A value of ≥0.8 indicates that the car seat being evaluated provides excellent comfort for the cervical spine.

[0049] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0050] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0051] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0052] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0053] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A biomimetic evaluation method for automobile seat comfort, characterized in that, A biomimetic evaluation system for automotive seat comfort includes: a cervical spine exoskeleton module, a cervical spine silicone muscle module, a cervical spine central axis skeleton module, an angle sensor module, a pressure sensor module, and a temperature sensor module. The cervical spine exoskeleton module is used to mimic the flexible flexion of the cervical spine. The cervical spine silicone muscle module is embedded within the cervical spine exoskeleton module to simulate neck muscle support and tissue slack. The cervical spine central axis skeleton module connects to the cervical spine exoskeleton module to achieve synchronous torsion between the two modules. The angle sensor module, pressure sensor module, and temperature sensor module respectively collect angle, pressure, and temperature values ​​for corresponding areas. The cervical spine exoskeleton module includes a cervical top joint, a cervical spine hinge, a cervical joint, a cervical upper central joint, a central joint bearing, a cervical lower central joint, a cervical base joint, a cervical base bearing, a central axis bone base bearing, and a cervical connecting base. The cervical connecting base is fixed to the cervical base on the thoracic spine of the dummy. The cervical top joint is connected to the cervical spine central axis skeleton module. This is then connected to the head. The hinged joints of the cervical top cap, cervical spine hinge, cervical joint, upper cervical central joint, lower cervical central joint, and cervical base joint enable flexible flexion of the cervical spine for biomimetic testing. The cervical exoskeleton module is divided into upper and lower parts based on the upper and lower cervical central joints. The upper cervical central joint, under the action of the central joint bearing, cooperates with the lower cervical central joint to drive the upper cervical spine to achieve axial rotation. The cervical base joint, in cooperation with the cervical base bearing, drives... The entire bionic cervical spine rotates around an axis; the cervical spine central axis skeleton module includes a cervical connecting top cover, a cervical upper pivot joint, an upper damped central axis bone, a cervical central axis joint, a lower damped central axis bone, a cervical lower pivot joint, and a central axis bone base. The cervical top cover joint is connected to the cervical connecting top cover. The cervical spine central axis skeleton module is connected to the cervical spine exoskeleton module under the cooperation of the central axis bone base and the central axis bone base bearings, and realizes the synchronous torsion of the cervical spine central axis skeleton module and the cervical spine exoskeleton module; the bionic evaluation method for the comfort of the car seat includes: The bionic evaluation system for car seat comfort collects the cervical pivot joint angle and cervical inferior pivot joint angle on the car seat to be evaluated. Based on the cervical central axis joint angle and the cervical inferior axis joint angle, calculate the joint angle evaluation index of the car seat to be evaluated; The bionic evaluation system for assessing car seat comfort collects pressure values ​​on the car seat to be evaluated. Based on the pressure value, calculate the pressure distribution evaluation index of the car seat to be evaluated; The temperature values ​​of the contact area between the bionic evaluation system for car seat comfort and the car seat to be evaluated are collected. Based on the temperature value, calculate the regional temperature evaluation index of the car seat to be evaluated; The comfort level of the car seat to be evaluated is determined based on the joint angle evaluation index, the pressure distribution evaluation index, and the regional temperature evaluation index.

2. The biomimetic evaluation method for automobile seat comfort according to claim 1, characterized in that, The bionic evaluation system for collecting the comfort of the car seat includes the pressure values ​​on the car seat to be evaluated, including: The bionic evaluation system for car seat comfort collects pressure values ​​at multiple different locations on the car seat to be evaluated. The pressure distribution evaluation index is calculated based on the pressure values ​​at the multiple different locations.

3. The biomimetic evaluation method for automobile seat comfort according to claim 2, characterized in that, The calculation of the pressure distribution evaluation index based on the pressure values ​​at the multiple different locations includes: The calculation formula for the pressure distribution evaluation index is as follows: ； in, P As an evaluation index for pressure distribution, P j For the first j The actual pressure value detected by the pressure sensor. For the first j The maximum pressure value that a corresponding part of the pressure sensor may withstand. For the first j The weight of pressure in each part.

4. The biomimetic evaluation method for automobile seat comfort according to claim 1, characterized in that, The calculation of the regional temperature evaluation index of the car seat to be evaluated based on the temperature value includes: The formula for calculating the regional temperature evaluation index is as follows: ； in, S As a regional temperature evaluation index, T This refers to the real-time temperature detected by a regional temperature sensor. T mid For the ideal intermediate temperature, T max and T min These represent the upper and lower limits of the comfortable temperature range for the cervical spine.

5. The biomimetic evaluation method for automobile seat comfort according to claim 1, characterized in that, The process of determining the comfort level of the car seat to be evaluated based on the joint angle evaluation index, the pressure distribution evaluation index, and the regional temperature evaluation index includes: If any of the joint angle evaluation index, the pressure distribution evaluation index, and the regional temperature evaluation index is less than the corresponding set threshold, then the comfort level of the car seat to be evaluated is determined to be poor.

6. The biomimetic evaluation method for automobile seat comfort according to claim 1, characterized in that, The process of determining the comfort level of the car seat to be evaluated based on the joint angle evaluation index, the pressure distribution evaluation index, and the regional temperature evaluation index includes: The comfort level of the car seat to be evaluated is obtained by weighted summing of the joint angle evaluation index, the pressure distribution evaluation index, and the regional temperature evaluation index.

7. A biomimetic evaluation system for automobile seat comfort, characterized in that, include: A cervical exoskeleton module for biomimetic flexible flexion of the cervical spine; A cervical spine silicone muscle module, which is embedded within the cervical spine exoskeleton module, is used to simulate neck muscle support and tissue sluggishness. A cervical spine central axis skeleton module, which is connected to the cervical spine external skeleton module, is used to realize synchronous torsion of the cervical spine central axis skeleton module and the cervical spine external skeleton module; An angle sensor module is disposed at the cervical spine axial skeleton module and is used to collect angle values ​​of the corresponding area. A pressure sensor module is disposed at the cervical spine exoskeleton module and is used to collect pressure values ​​in the corresponding area. A temperature sensor module is disposed at the cervical spine exoskeleton module and is used to collect temperature values ​​of the corresponding area. A control module, connected to the angle sensor module, the pressure sensor module, and the temperature sensor module, is used to execute the method according to any one of claims 1-6.

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