A method and device for simulating a jacking device, a terminal and a storage medium

Abstract

This invention discloses a simulation method, device, terminal, and storage medium for a lifting device, belonging to the field of simulation analysis technology. A refined simulation model of the lifting device is established based on its structural information parameters. Based on the airbag model, refined simulation curves of displacement and lifting force are obtained by adjusting the airbag deflation characteristic parameters. These refined simulation curves are compared with experimental curves of displacement and lifting force obtained during actual testing. A refined simulation model of the lifting device is also established based on the airbag deflation characteristic parameters obtained from the refined simulation model. Refined simulation curves of time and acceleration are obtained by adjusting the friction coefficient between the limiting ring and the sleeve. These refined simulation curves are also compared with experimental curves of time and acceleration obtained during actual testing. This patent uses the airbag method (*AIRBAG) for refined modeling to simulate the lifting device, which effectively improves simulation accuracy.

Description

Technical Field

[0001] This invention discloses a simulation method, device, terminal, and storage medium for a lifting device, belonging to the field of simulation analysis technology. Background Technology

[0002] With the increasing number of motor vehicles in China, pedestrian accidents on roads are becoming increasingly prominent. To improve pedestrian protection and reduce head injuries, active pop-up hood systems have emerged as a new technology and are being used more and more widely. An active pop-up hood consists of two main systems: a sensing system and an actuator. The actuator is the power system responsible for lifting the hood to a set height. Figure 1 The current mainstream lifting device is the gunpowder lifting device, which uses gunpowder explosion to quickly lift the hood system to a set height, increasing the distance between the hood surface and the hard point under the airport, thereby reducing head injuries to pedestrians. Figure 2 In the development of an active launcher, the performance of the actuator needs to be accurately simulated through high-precision simulation during the design phase. This simulation aims to identify the achieved lifting height and timing, and to identify and improve design risks. Furthermore, the operational characteristics of the lifter are also a key factor affecting the accuracy of subsequent active launcher head shape simulation. Therefore, a high-precision lifter simulation method is needed to effectively identify design risks, reduce the number of rounds of design and experimental verification, and help reduce the development cost of the active launcher system. The propellant lifter consists of components such as an igniter, lifting rod, sleeve, and fixing flange (e.g., Figure 3 Upon receiving the ignition signal from the ECU, the propellant is detonated, causing the lifting rod to rise instantaneously, thereby raising the launcher cover to the lifting position. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention proposes a simulation method, device, terminal, and storage medium for a lifting device. By simulating the lifting process of a gunpowder lifting device, the accuracy of simulation and testing is greatly improved. Furthermore, by using the friction coefficient between the lifting rod and the sleeve as an adjustment variable, the unloading characteristics of the lifting device under head-shaped impact can be effectively realized, thereby improving the accuracy of head-shaped injury prediction under active launcher action. This solves the problems of traditional simulation methods that use spring units to simulate the lifting process, where the lifting rod's motion characteristics during loading differ from the actual process, and where the lifting device provides some support for the launcher's downward movement due to incomplete air pressure unloading during head-shaped impact, making it difficult to simulate the unloading process of the lifting device under head-shaped impact using spring units.

[0004] The technical solution of the present invention is as follows:

[0005] According to a first aspect of the present invention, a simulation method for a lifting device is provided, characterized in that it includes:

[0006] Obtain the structural information parameters of the lifting device, establish a fine simulation model of the lifting device based on the structural information parameters, and establish an airbag model at the gunpowder position of the lifting device using a simplified method, and establish an airbag characteristic card corresponding to the gunpowder characteristics; obtain fine simulation curves of displacement and lifting force based on the airbag model and by adjusting the airbag deflation characteristic parameters, compare the fine simulation curves with the test curves of displacement and lifting force obtained in the actual test, if the accuracy of the two is greater than or equal to a first preset value, continue to the next step, otherwise adjust the airbag deflation characteristic parameters; based on the airbag deflation characteristic parameters obtained from the fine simulation model of the lifting device, obtain fine simulation curves of time and acceleration by adjusting the friction coefficient between the limiting ring and the sleeve, compare the fine simulation curves with the test curves of time and acceleration obtained in the actual test, if the accuracy of the two is greater than or equal to a second preset value, predict the degree of head injury in the lowering cover area, otherwise adjust the friction coefficient between the limiting ring and the sleeve.

[0007] Preferably, the information parameters include at least: installation method, material, and thickness.

[0008] Preferably, the airbag characteristic card includes: component information parameters, airbag burst characteristic parameters, and airbag deflation characteristic parameters.

[0009] Preferably, the fine simulation curves of displacement and lifting force are obtained based on the airbag model and by adjusting the airbag deflation characteristic parameters, including: establishing a lifting force test device model consistent with the actual test conditions, and mounting the fine simulation model of the lifting device on the lifting force test device model; performing a lifting force test on the fine simulation model of the lifting device on the lifting force test device model to obtain fine simulation curves of displacement and lifting force.

[0010] Preferably, the step of obtaining the fine simulation curves of time and acceleration by adjusting the friction coefficient between the limiting ring and the sleeve includes: establishing a subsystem test device model consistent with the actual test conditions, and mounting the fine simulation model of the lifting device on the subsystem test device model; and conducting a pedestrian protection head shape test on the fine simulation model of the lifting device on the subsystem test device model to obtain the fine simulation curves of time and acceleration.

[0011] Preferably, the first preset value is 90% and the second preset value is 85%.

[0012] Preferably, the prediction of the degree of head injury in the lower cover area includes: when the accuracy of the fine simulation curve and the test curve of displacement and lifting force obtained in the actual test is greater than or equal to the second preset value, obtaining the fine simulation curve of time and acceleration corresponding to the friction coefficient between the limiting ring and the sleeve at this time;

[0013] The HIC value of head injury is obtained based on the fine simulation curve of the time and acceleration corresponding to the friction coefficient between the limiting ring and the sleeve at this time; the degree of head injury in the area of ​​the active pop-up head cover system under the deployed head cover is determined based on the HIC value of head injury.

[0014] According to a second aspect of the present invention, a simulation device for a lifting device is provided, comprising:

[0015] A model building module is established to obtain structural information parameters of the lifting device. A fine simulation model of the lifting device is built based on the structural information parameters of the lifting device. A simplified method is used to build an airbag model at the gunpowder position of the lifting device, and an airbag characteristic card corresponding to the gunpowder characteristics is built.

[0016] The first calibration module is used to obtain a fine simulation curve of displacement and lifting force based on the airbag model and by adjusting the airbag deflation characteristic parameters. The fine simulation curve is compared with the test curve of displacement and lifting force obtained in the actual test. If the accuracy of the two is greater than or equal to the first preset value, the next step is continued; otherwise, the airbag deflation characteristic parameters are adjusted.

[0017] The second calibration module is used to obtain the airbag deflation characteristic parameters of the lifter based on the fine simulation model of the lifter, and to obtain the fine simulation curves of time and acceleration by adjusting the friction coefficient between the limiting ring and the sleeve. The fine simulation curves are compared with the test curves of time and acceleration obtained in the actual test. If the accuracy of the two is greater than or equal to the second preset value, the degree of head injury in the lower cover area is predicted; otherwise, the friction coefficient between the limiting ring and the sleeve is adjusted.

[0018] According to a third aspect of the present invention, a terminal is provided, comprising:

[0019] One or more processors;

[0020] Memory for storing the one or more processor-executable instructions;

[0021] Wherein, the one or more processors are configured as follows:

[0022] Perform the method described in the first aspect of the embodiments of the present invention.

[0023] According to a fourth aspect of the present invention, a non-transitory computer-readable storage medium is provided, wherein instructions in the storage medium are sent by a terminal.

[0024] When the processor executes, it enables the terminal to execute the method described in the first aspect of the embodiments of the present invention.

[0025] According to a fifth aspect of the present invention, an application product is provided that, when the application product is running on a terminal, causes the terminal to execute...

[0026] The method described in the first aspect of the present invention.

[0027] The beneficial effects of this invention are as follows:

[0028] This patent provides a simulation method, device, terminal, and storage medium for a lifter. The invention employs a refined construction method using the airbag technique (*AIRBAG).

[0029] The simulation of the lifting device using a model method can effectively solve the problem that the traditional method of using a spring (*ELEMENT_DISCRETE) cannot accurately describe the top of the lifting rod.

[0030] The simulation of the support process during the lifting and unloading processes in the head-shaped impact phase improves simulation accuracy, enabling full identification of design risks and target achievement during the design phase.

[0031] This reduces the number of design and testing rounds, shortening development costs and timelines. The use of a flexible sleeve allows for better control of friction between the sleeve and the lifting rod.

[0032] The system enables localized adjustment of the lifting force of the jacking device, providing an adjustable parameter for subsequent head injury simulation calibration and effectively improving the performance of the active jacking device.

[0033] Accuracy of injury prediction for head impact in the head-shaped area of ​​vehicle headliner. Attached Figure Description

[0034] Figure 1 This is a flowchart illustrating a simulation method for a lifter according to an exemplary embodiment;

[0035] Figure 2 This is a flowchart illustrating a simulation method for a lifter according to an exemplary embodiment;

[0036] Figure 3 This is a schematic diagram of the jack simulation analysis model when it is not ejected in a jack simulation method according to an exemplary embodiment;

[0037] Figure 4 This is a schematic diagram of the lifting state of the jacking device simulation analysis model in a jacking device simulation method according to an exemplary embodiment;

[0038] Figure 5 This is an example diagram illustrating the airbag characteristic card setting in a simulation method for a lifter according to an exemplary embodiment;

[0039] Figure 6This is a schematic diagram of a jacking force testing device in a jacking simulation method according to an exemplary embodiment;

[0040] Figure 7 This is a simulation comparison example curve of the jack test curve in a jack simulation method according to an exemplary embodiment;

[0041] Figure 8 This is an example diagram illustrating the impact simulation of the head shape of the jack in a jacking position according to an exemplary embodiment.

[0042] Figure 9 This is an example diagram illustrating the difference in impact injury curves at the upper projection point of a lifter in a simulation method for a lifter according to an exemplary embodiment;

[0043] Figure 10 This is a simulation of a jacking device simulation method according to an exemplary embodiment, illustrating a pedestrian head protection simulation condition under the active jacking action.

[0044] Schematic diagram;

[0045] Figure 11 This is a schematic block diagram illustrating the structure of a simulation device for a lifter according to an exemplary embodiment;

[0046] Figure 12 This is a schematic block diagram of a terminal structure according to an exemplary embodiment. Detailed Implementation

[0047] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, those skilled in the art can make informed decisions without creative effort.

[0048] All other embodiments described herein are within the scope of protection of this invention.

[0049] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. For the purposes of this invention...

[0050] For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0051] This invention provides a simulation method for a lifting device, which is implemented by a terminal, such as a smartphone, desktop computer, or...

[0052] Laptops and other similar devices; terminals include at least a CPU. Example

[0053] Figure 1-2 This is a flowchart illustrating a simulation method for a lifter according to an exemplary embodiment. The method is used in a terminal.

[0054] Includes the following steps:

[0055] Step S101: Obtain the structural information parameters of the lifting device, establish a detailed simulation model of the lifting device based on the structural information parameters, and establish an airbag model at the gunpowder position of the lifting device using a simplified method, and establish an airbag characteristic card corresponding to the gunpowder characteristics. The specific content is as follows:

[0056] Information parameters should include at least: installation method, materials, and thickness. A detailed simulation model of the jacking device should be built using *AIRBAG, such as... Figure 3 As shown, the detailed simulation model of the lifting device includes: a rubber cap 101, a flange 102, a sleeve 103, a lifting rod 104, a cartridge case 106, a ring shell 201, a limiting ring 202, gunpowder 203, and a propellant production chamber 204. The core components for the lifting function of the lifting device include the gunpowder 203 and the lifting rod 104. Together, they achieve the lifting function: the instantaneous detonation of the gunpowder generates gas pressure, which lifts the lifting rod. The force generated by the lifting rod's rebound lifts the upper contact components, such as... Figure 4As shown, the conventional type is the active hinge and assembly, which generally includes a subsystem of the actuator consisting of the cover assembly, active hinge, gas spring, and latch.

[0057] The *AIRBAG method uses an airbag to simulate the pressure generated by gunpowder. An example of the device card setup is shown below. Figure 5 As shown, airbag feature card

[0058] As shown in Table 1 below.

[0059] Table 1. Airbag Characteristic Card Parameter Table

[0060] Parameter name Parameter Explanation SID1 Component / assembly number, can be defined as a component or component set, that is, the set of parts that constitute the airbag system. STYPE1 =0 indicates a component; =1 indicates a collection of components. NP Total number of particles (defined using particle method to simulate an airbag) TATM Ambient temperature PATM Atmospheric pressure NVENT Airbag definition: number of vent holes TSW Control volume calculation conversion time IAIR Whether to consider the remaining gas in the gas belt: =0 - not considered; =1 - considered (using the lift-up control method); =2 - considered (particle method). NGAS Gas components NORIF Number of pores SID3(1) Define the component number (component ID) for the vent. LCTC23 Degassing characteristics - time curve number (ID) XMAIR Molar mass of the gas inside the gas bag AAIR / BAIR Heat capacity parameters NP_AIR Number of particles in gas NP_RELAX Number of cycles to reach thermal equilibrium LCM(1) Mass flow curves of gas components LCT(1) Temperature flow curves of gas components XM(1) molar mass of gas A(1), B(1), C(1) Heat capacity parameters of each gas component NID(1) Vent location VD(1) Vector ID that defines the direction

[0061] The airbag characteristic card includes: component information parameters, airbag burst characteristic parameters and airbag deflation characteristic parameters. Among them, the component information parameters are: SID1, STYPE1; the environmental characteristic parameters are: TATM; the airbag burst characteristic parameters are: NP, PATM, NGAS, IAIR, XMAIR, AAIR / BAIR, NP_AIR, NP_RELAX, LCM(1), LCT(1), XM(1), A(1), B(1), C(1), VD(1); the airbag deflation characteristic parameters are: NVENT, NORIF, SID3(1), LCTC23, NID(1); and the control parameter is: TSW.

[0062] Step S102: Based on the airbag model, a fine simulation curve of displacement and lifting force is obtained by adjusting the airbag deflation characteristic parameters. The fine simulation curve is compared with the experimental curve of displacement and lifting force obtained during the actual test. If the accuracy of the two is greater than or equal to the first preset value, the next step is continued; otherwise, the airbag deflation characteristic parameters are adjusted. The specific content is as follows:

[0063] First, a lifting test was conducted under the counterweight of the jacking device, and then the accuracy of the lifting process was calibrated by simulating the *AIRBAG parameters.

[0064] Establish a model of the lifting force testing device that matches the actual test conditions, such as... Figure 6 As shown, the model of the lifting force test device includes: a height adjustment guide rail 3001, a height adjustment and counterweight fixing platform 3002, a base 3003, a fixing device, a lifting device fixing seat 3005, a lifting device fixing device 3006, a lateral counterweight 3007, a lifting device counterweight 3008, and a height blocking block 3009.

[0065] A detailed simulation model A101 of the lifting device was mounted on the lifting force testing device model, and the distance B001 between the upper part of the lifting device and the counterweight 3008 was set to 7~10mm. The weight of the counterweight 3008 was set with reference to M=λM. d In the formula, M is the mass of the counterweight. d The lifting mass is designed for the vehicle model, and the number of lifters needs to be considered, where λ is defined as 1.1~1.2. The distance from the top of the counterweight B002 to the height blocking block is set to the lifting height set by the lifters.

[0066] A detailed simulation curve of displacement and lifting force was obtained by performing a lifting force test on the lifting force test device model of the lifting device. The displacement-lifting force obtained from the lifting force test was then used for simulation calibration. Since the gas pressure characteristics of gunpowder are simulated using the airbag method, it is necessary to achieve consistency between the simulation and the experiment through venting characteristic simulation calibration. The simulation calibration parameters include: airbag definition, number of vent holes (NVENT), number of vent holes (NORIF), venting characteristic-time curve (LCTC23), and vent hole position (NID) (1).

[0067] Because an upward thrust is generated instantaneously during the explosion of a real lifting device, gas will leak from the assembly components during the actual lifting process, which will be reflected in the pressure change during the dynamic lifting process. However, it is impossible to accurately obtain the changes in the gas leakage characteristics in actual tests. The gas leakage characteristics can only be inferred from the macroscopic indicators of lifting force and lifting displacement. Therefore, it is necessary to obtain the accurate parameters of the lifting device by reverse calibration of the relevant parameters of gas leakage characteristics.

[0068] The refined simulation curves are compared with the experimental curves of displacement and lifting force obtained during actual experiments, such as... Figure 7 As shown, if the accuracy of both is greater than or equal to the first preset value, proceed to the next step; otherwise, adjust the airbag deflation characteristic parameters. The first preset value is 90%.

[0069] Step S103: Based on the airbag deflation characteristic parameters obtained from the refined simulation model of the lifter, the refined simulation curves of time and acceleration are obtained by adjusting the friction coefficient between the limiting ring and the sleeve. The refined simulation curves are compared with the experimental curves of time and acceleration obtained during the actual test. If the accuracy of the two is greater than or equal to the second preset value, the degree of head injury in the lower area of ​​the active pop-up shield system is predicted; otherwise, the friction coefficient between the limiting ring and the sleeve is adjusted. The specific details are as follows:

[0070] A head-type impact test was conducted on the execution subsystem to calibrate the unloading characteristics of the lifter under impact using the friction coefficient. A detailed model of the limiting ring 202 was created in the fine modeling of the lifter, and a flexible material was assigned to it (referring to a deformable material other than MAT20). Separate contact between the limiting ring and the sleeve 103 was established. The Ls-dyna control card is *AUTOMATIC_SURFACE_TO_SURFACE. First, a subsystem test device model consistent with the actual test conditions was established. The pedestrian protection head-type impact point was selected as the upper projection point A104 of the lifter. Figure 8 and Figure 10 As shown, the detailed simulation model of the jacking device is mounted on the subsystem test device model. Figure 8 In the model, the fine simulation model A101 of the lifter is matched with the raised head cover A102 after lifting, and the head shape A2 corresponds to the projection point A104. Under the simulated working condition of pedestrian protection head shape under the action of active head cover lifting, the fine simulation model A101 of the lifter is matched with the raised head cover A102 on the vehicle body model A1.

[0071] The friction coefficient between the limiting ring and the sleeve includes the static friction coefficient FS and the dynamic friction coefficient FD. The unloading characteristics are simulated and calibrated by adjusting the friction coefficient between the limiting ring and the sleeve. A pedestrian head protection test is conducted on the fine simulation model of the jacking device on the subsystem test device model to obtain fine simulation curves of time and acceleration. These fine simulation curves are then compared with the actual time and acceleration test curves obtained during the test. Figure 9 As shown, if the accuracy of both is greater than or equal to the second preset value, the degree of head injury in the area where the active pop-up shield system unfolds is predicted; otherwise, the friction coefficient between the limiting ring and the sleeve is adjusted. The second preset value is 85%.

[0072] When the accuracy of the fine simulation curve and the test curve of displacement and lifting force obtained during the actual test is greater than or equal to the second preset value, a fine simulation curve of the time and acceleration corresponding to the friction coefficient between the limiting ring and the sleeve is obtained; the HIC value of head injury is obtained based on the fine simulation curve of the time and acceleration corresponding to the friction coefficient between the limiting ring and the sleeve; the degree of head injury in the lower area of ​​the active pop-up head cover system is determined based on the HIC value of head injury, thereby simulating, verifying and optimizing the structure and function of the entire system. Example

[0073] In an exemplary embodiment, a simulation device for a lifting device is also provided, such as... Figure 11 As shown, it includes:

[0074] Model module 210 is used to obtain the structural information parameters of the lifting device, establish a fine simulation model of the lifting device based on the structural information parameters of the lifting device, and establish an airbag model at the gunpowder position of the lifting device using a simplified method, and establish an airbag characteristic card corresponding to the characteristics of the gunpowder.

[0075] The first calibration module 220 is used to obtain a fine simulation curve of displacement and lifting force based on the airbag model and by adjusting the airbag deflation characteristic parameters. The fine simulation curve is compared with the test curve of displacement and lifting force obtained in the actual test. If the accuracy of the two is greater than or equal to the first preset value, the next step is continued; otherwise, the airbag deflation characteristic parameters are adjusted.

[0076] The second calibration module 230 is used to obtain the fine simulation curves of time and acceleration based on the airbag deflation characteristic parameters obtained from the fine simulation model of the lifter, by adjusting the friction coefficient between the limiting ring and the sleeve, and compare the fine simulation curves with the test curves of time and acceleration obtained in the actual test. If the accuracy of the two is greater than or equal to the second preset value, the degree of head injury in the area of ​​the active pop-up hood system when it is deployed is predicted; otherwise, the friction coefficient between the limiting ring and the sleeve is adjusted.

[0077] This invention employs a refined modeling approach using the airbag method (*AIRBAG) to simulate the lifting device. This effectively addresses the limitations of traditional spring-based methods (*ELEMENT_DISCRETE) in accurately describing the lifting process of the lifting rod and the unloading process during head impact. This improves simulation accuracy, allows for full identification of design risks and target achievement during the design phase, reduces design and testing cycles, and shortens development costs and timelines. The use of a flexible sleeve allows for localized adjustment of the lifting force through the friction coefficient between the sleeve and the lifting rod. This provides an adjustable parameter for subsequent head impact simulation calibration, effectively improving the accuracy of head impact injury prediction in the head impact area of ​​vehicles with active head-mounted hoods. Example

[0078] Figure 12 This is a structural block diagram of a terminal provided in an embodiment of this application. The terminal can be the terminal in the above embodiments. The terminal 300 can be a portable mobile terminal, such as a smartphone or tablet computer. The terminal 300 may also be referred to as user equipment, portable terminal, or other names.

[0079] Typically, terminal 300 includes a processor 301 and a memory 302.

[0080] Processor 301 may include one or more processing cores, such as a quad-core processor, an octa-core processor, etc. Processor 301 may be implemented using at least one hardware form selected from DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), and PLA (Programmable Logic Array). Processor 301 may also include a main processor and a coprocessor. The main processor, also known as a CPU (Central Processing Unit), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, processor 301 may integrate a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the screen. In some embodiments, processor 301 may also include an AI (Artificial Intelligence) processor, which is used to handle computational operations related to machine learning.

[0081] Memory 302 may include one or more computer-readable storage media, which may be tangible and non-transitory. Memory 302 may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In some embodiments, the non-transitory computer-readable storage media in memory 302 is used to store at least one instruction, which is executed by processor 301 to implement a jack simulation method provided in this application.

[0082] In some embodiments, the terminal 300 may also optionally include: a peripheral device interface 303 and at least one peripheral device. Specifically, the peripheral device includes at least one of: a radio frequency circuit 304, a touch display screen 305, a camera 306, an audio circuit 307, a positioning component 308, and a power supply 309.

[0083] Peripheral device interface 303 can be used to connect at least one I / O (Input / Output) related peripheral device to processor 301 and memory 302. In some embodiments, processor 301, memory 302 and peripheral device interface 303 are integrated on the same chip or circuit board; in some other embodiments, any one or two of processor 301, memory 302 and peripheral device interface 303 can be implemented on separate chips or circuit boards, which is not limited in this embodiment.

[0084] The radio frequency (RF) circuit 304 is used to receive and transmit RF (Radio Frequency) signals, also known as electromagnetic signals. The RF circuit 304 communicates with communication networks and other communication devices via electromagnetic signals. The RF circuit 304 converts electrical signals into electromagnetic signals for transmission, or converts received electromagnetic signals back into electrical signals. Optionally, the RF circuit 304 includes: an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a user identity module card, etc. The RF circuit 304 can communicate with other terminals through at least one wireless communication protocol. This wireless communication protocol includes, but is not limited to: the World Wide Web, metropolitan area networks, intranets, various generations of mobile communication networks (2G, 3G, 4G, and 5G), wireless local area networks, and / or WiFi (Wireless Fidelity) networks. In some embodiments, the RF circuit 304 may also include circuitry related to NFC (Near Field Communication), which is not limited in this application.

[0085] The touch display screen 305 is used to display a UI (User Interface). This UI may include graphics, text, icons, videos, and any combination thereof. The touch display screen 305 also has the ability to collect touch signals on or above its surface. These touch signals can be input as control signals to the processor 301 for processing. The touch display screen 305 is used to provide virtual buttons and / or a virtual keyboard, also known as soft buttons and / or a soft keyboard. In some embodiments, there may be one touch display screen 305, positioned on the front panel of the terminal 300; in other embodiments, there may be at least two touch display screens, respectively positioned on different surfaces of the terminal 300 or in a folded design; in still other embodiments, the touch display screen 305 may be a flexible display screen, positioned on a curved or folded surface of the terminal 300. Furthermore, the touch display screen 305 may be configured as a non-rectangular, irregular shape, i.e., a non-rectangular screen. The touch display screen 305 may be made of materials such as LCD (Liquid Crystal Display) or OLED (Organic Light-Emitting Diode).

[0086] Camera assembly 306 is used to acquire images or videos. Optionally, camera assembly 306 includes a front-facing camera and a rear-facing camera. Typically, the front-facing camera is used for video calls or selfies, and the rear-facing camera is used for taking photos or videos. In some embodiments, there are at least two rear-facing cameras, which are any one of a main camera, a depth-sensing camera, and a wide-angle camera, to achieve background blurring by fusion of the main camera and the depth-sensing camera, and panoramic shooting and VR (Virtual Reality) shooting by fusion of the main camera and the wide-angle camera. In some embodiments, camera assembly 306 may also include a flash. The flash can be a single-color temperature flash or a dual-color temperature flash. A dual-color temperature flash is a combination of a warm light flash and a cool light flash, which can be used for light compensation at different color temperatures.

[0087] Audio circuit 307 provides an audio interface between the user and terminal 300. Audio circuit 307 may include a microphone and a speaker. The microphone is used to collect sound waves from the user and the environment, converting the sound waves into electrical signals that are input to processor 301 for processing, or input to radio frequency circuit 304 for voice communication. For stereo sound acquisition or noise reduction purposes, multiple microphones may be used, each located at a different part of terminal 300. The microphone may also be an array microphone or an omnidirectional microphone. The speaker is used to convert electrical signals from processor 301 or radio frequency circuit 304 into sound waves. The speaker may be a conventional diaphragm speaker or a piezoelectric ceramic speaker. When the speaker is a piezoelectric ceramic speaker, it can convert electrical signals not only into audible sound waves but also into inaudible sound waves for purposes such as distance measurement. In some embodiments, audio circuit 307 may also include a headphone jack.

[0088] The positioning component 308 is used to determine the current geographic location of the terminal 300 in order to enable navigation or LBS (Location Based Service). The positioning component 308 can be a positioning component based on the US GPS (Global Positioning System), China's BeiDou system, or Russia's Galileo system.

[0089] The power supply 309 is used to power the various components in the terminal 300. The power supply 309 can be AC ​​power, DC power, a disposable battery, or a rechargeable battery. When the power supply 309 includes a rechargeable battery, the rechargeable battery can be a wired rechargeable battery or a wireless rechargeable battery. A wired rechargeable battery is a battery that is charged via a wired connection, while a wireless rechargeable battery is a battery that is charged via a wireless coil. The rechargeable battery can also be used to support fast charging technology.

[0090] In some embodiments, the terminal 300 further includes one or more sensors 310. The one or more sensors 310 include, but are not limited to: an accelerometer 311, a gyroscope 312, a pressure sensor 313, a fingerprint sensor 314, an optical sensor 315, and a proximity sensor 316.

[0091] Accelerometer 311 can detect the magnitude of acceleration along the three coordinate axes of a coordinate system established with terminal 300. For example, accelerometer 311 can be used to detect the components of gravitational acceleration along the three coordinate axes. Processor 301 can control touchscreen 305 to display the user interface in landscape or portrait view based on the gravitational acceleration signal acquired by accelerometer 311. Accelerometer 311 can also be used for games or for acquiring user motion data.

[0092] The gyroscope sensor 312 can detect the orientation and rotation angle of the terminal 300. The gyroscope sensor 312, in conjunction with the accelerometer sensor 311, can collect the user's 3D (3-dimensional) movements on the terminal 300. Based on the data collected by the gyroscope sensor 312, the processor 301 can perform the following functions: motion sensing (e.g., changing the UI based on the user's tilt), image stabilization during shooting, game control, and inertial navigation.

[0093] The pressure sensor 313 can be disposed on the side bezel of the terminal 300 and / or on the lower layer of the touch display screen 305. When the pressure sensor 313 is disposed on the side bezel of the terminal 300, it can detect the user's grip signal on the terminal 300 and perform left / right hand recognition or quick operation based on the grip signal. When the pressure sensor 313 is disposed on the lower layer of the touch display screen 305, it can control the operable controls on the UI interface based on the user's pressure operation on the touch display screen 305. The operable controls include at least one of button controls, scroll bar controls, icon controls, and menu controls.

[0094] The fingerprint sensor 314 is used to collect a user's fingerprint to identify the user's identity. When the user's identity is identified as trusted, the processor 301 authorizes the user to perform relevant sensitive operations, including unlocking the screen, viewing encrypted information, downloading software, making payments, and changing settings. The fingerprint sensor 314 can be located on the front, back, or side of the terminal 300. When the terminal 300 has physical buttons or a manufacturer's logo, the fingerprint sensor 314 can be integrated with the physical buttons or manufacturer's logo.

[0095] An optical sensor 315 is used to collect ambient light intensity. In one embodiment, the processor 301 can control the display brightness of the touch screen 305 based on the ambient light intensity collected by the optical sensor 315. Specifically, when the ambient light intensity is high, the display brightness of the touch screen 305 is increased; when the ambient light intensity is low, the display brightness of the touch screen 305 is decreased. In another embodiment, the processor 301 can also dynamically adjust the shooting parameters of the camera assembly 306 based on the ambient light intensity collected by the optical sensor 315.

[0096] The proximity sensor 316, also known as a distance sensor, is typically located on the front of the terminal 300. The proximity sensor 316 is used to detect the distance between the user and the front of the terminal 300. In one embodiment, when the proximity sensor 316 detects that the distance between the user and the front of the terminal 300 is gradually decreasing, the processor 301 controls the touchscreen display 305 to switch from a screen-on state to a screen-off state; when the proximity sensor 316 detects that the distance between the user and the front of the terminal 300 is gradually increasing, the processor 301 controls the touchscreen display 305 to switch from a screen-off state to a screen-on state.

[0097] Those skilled in the art will understand that Figure 12 The structure shown does not constitute a limitation on terminal 300, and may include more or fewer components than shown, or combine certain components, or use different component arrangements. Example

[0098] In an exemplary embodiment, a computer-readable storage medium is also provided, on which a computer program is stored, which, when executed by a processor, implements a jacking simulation method as provided in all embodiments of the present application.

[0099] Any combination of one or more computer-readable media may be used. A computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. A computer-readable storage medium can be, for example—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this document, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in connection with an instruction execution system, apparatus, or device.

[0100] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including—but not limited to—electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, capable of transmitting, propagating, or transmitting programs for use by or in connection with an instruction execution system, apparatus, or device.

[0101] The program code contained on a computer-readable medium may be transmitted using any suitable medium, including—but not limited to—wireless, wire, optical fiber, RF, etc., or any suitable combination thereof.

[0102] Computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider). Example

[0103] In an exemplary embodiment, an application product is also provided, including one or more instructions that can be executed by the processor 301 of the aforementioned device to complete the aforementioned simulation method for a lifter.

[0104] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for the present invention. Other modifications can be readily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and examples shown and described herein.

Claims

1. A simulation method for a lifting device, characterized in that, include: Obtain the structural information parameters of the lifting device, establish a fine simulation model of the lifting device based on the structural information parameters of the lifting device, and establish an airbag model at the gunpowder position of the lifting device using a simplified method, and establish an airbag characteristic card corresponding to the characteristics of the gunpowder. Based on the airbag model, and by adjusting the airbag deflation characteristic parameters, a fine simulation curve of displacement and lifting force is obtained. This fine simulation curve is then compared with the experimental curves of displacement and lifting force obtained during actual testing. If the accuracy of both is greater than or equal to a first preset value, the process continues to the next step. Otherwise, adjust the airbag deflation characteristic parameters; Based on the airbag deflation characteristic parameters obtained from the refined simulation model of the lifting device, a refined simulation curve of time and acceleration was obtained by adjusting the friction coefficient between the limiting ring and the sleeve. This refined simulation curve was then compared with the time and acceleration data obtained during actual testing. The test curves are compared. If the accuracy of the two is greater than or equal to the second preset value, the degree of head injury in the lower cover area is predicted; otherwise, the friction coefficient between the limiting ring and the sleeve is adjusted.

2. The simulation method for a lifting device according to claim 1, characterized in that, The information parameters include at least: installation method, material, and thickness.

3. The simulation method for a lifting device according to claim 2, characterized in that, The airbag characteristic card includes: component information parameters, airbag burst characteristic parameters, and airbag deflation characteristic parameters.

4. The simulation method for a lifting device according to claim 3, characterized in that, Based on the airbag model and by adjusting the airbag deflation characteristic parameters, a fine simulation curve of displacement and lifting force is obtained, including: establishing a lifting force test device model consistent with the actual test conditions, and mounting the fine simulation model of the lifting device on the lifting force test device model; performing a lifting force test on the fine simulation model of the lifting device on the lifting force test device model to obtain a fine simulation curve of displacement and lifting force.

5. A simulation method for a lifting device according to claim 4, characterized in that, The process of obtaining the fine simulation curves of time and acceleration by adjusting the friction coefficient between the limiting ring and the sleeve includes: establishing a subsystem test device model consistent with the actual test conditions, and mounting the fine simulation model of the lifting device on the subsystem test device model; and conducting a pedestrian protection head shape test on the fine simulation model of the lifting device on the subsystem test device model to obtain the fine simulation curves of time and acceleration.

6. A simulation method for a lifting device according to claim 5, characterized in that, The first preset value is 90%, and the second preset value is 85%.

7. A simulation method for a lifting device according to claim 6, characterized in that, The method for predicting the degree of head injury in the lower shield area includes: obtaining a fine simulation curve of time and acceleration corresponding to the friction coefficient between the limiting ring and the sleeve when the accuracy of the fine simulation curve and the test curve of time and acceleration obtained during the actual test is greater than or equal to a second preset value; obtaining the HIC value of head injury based on the fine simulation curve of time and acceleration corresponding to the friction coefficient between the limiting ring and the sleeve; and determining the degree of head injury in the lower shield area when the active pop-up shield system is deployed based on the HIC value of head injury.

8. A simulation device for a lifting device, characterized in that, include: A model building module is used to acquire structural information parameters of the lifting device, build a fine simulation model of the lifting device based on the structural information parameters, and build an airbag model at the gunpowder position of the lifting device using a simplified method, and build an airbag characteristic card corresponding to the gunpowder characteristics; a first calibration module is used to obtain fine simulation curves of displacement and lifting force based on the airbag model and by adjusting the airbag deflation characteristic parameters, compare the fine simulation curves with the test curves of displacement and lifting force obtained in the actual test, if the accuracy of the two is greater than or equal to a first preset value, continue to the next step; otherwise, adjust the airbag deflation characteristic parameters; The second calibration module is used to obtain fine simulation curves of time and acceleration based on the airbag deflation characteristic parameters obtained from the fine simulation model of the lifter, by adjusting the friction coefficient between the limiting ring and the sleeve. These fine simulation curves are then compared with those obtained during actual testing. The test curves of time and acceleration are compared. If the accuracy of the two is greater than or equal to the second preset value, the degree of head injury in the lower cover area is predicted; otherwise, the friction coefficient between the limiting ring and the sleeve is adjusted.

9. A terminal, characterized in that, include: One or more processors; Memory for storing the one or more processor-executable instructions; Wherein, the one or more processors are configured as follows: Perform a simulation method for a lifting device as described in any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium, characterized in that, When the instructions in the storage medium are executed by the terminal's processor, This enables the terminal to execute a simulation method for a lifter as described in any one of claims 1 to 7.

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