Automatic driving device for simulating high-altitude air pressure
By simulating high-altitude air pressure in an autonomous driving device, using a vacuum pump and pressure sensor to regulate air pressure, and combining it with a six-degree-of-freedom driving simulation platform, the problem of testing in-vehicle comfort systems in high-altitude environments has been solved, achieving efficient and accurate testing and calibration.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN JINBO TECH CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-04-28
AI Technical Summary
Existing technologies for testing in-vehicle comfort systems in high-altitude, low-pressure environments require long-distance driving, resulting in high costs and uncontrollable factors that affect the accuracy and reliability of test results.
Design an autonomous driving device that simulates high-altitude air pressure, including an air pressure simulation chamber and a driving simulation platform. The air pressure is regulated by a vacuum pump and pressure sensors. Combined with a six-degree-of-freedom driving simulation platform, it can accurately simulate different atmospheric pressures and driving postures and detect the working status of car seat components.
It significantly reduces testing costs, improves the accuracy and reliability of test results, provides precise calibration data for in-vehicle comfort systems, and reduces fuel consumption and vehicle wear and tear.
Smart Images
Figure CN224176113U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of autonomous driving device technology, and in particular to an autonomous driving device that simulates high-altitude air pressure. Background Technology
[0002] The automotive industry is undergoing rapid development and transformation. With the widespread adoption of automotive electrification technology, consumer demand for cars is no longer limited to basic transportation functions. The pursuit of a high-quality lifestyle has led to in-vehicle comfort systems gradually becoming standard features. Among these, in-vehicle massage systems, as an important component for enhancing driving comfort, need to ensure their reliability in different usage scenarios. In particular, their operation may be significantly affected in high-altitude, low-pressure conditions.
[0003] However, existing technologies for verifying and testing in-vehicle comfort systems in high-altitude, low-pressure environments have many shortcomings. Traditional testing methods often require drivers to drive the car to actual high-altitude environments for testing. This approach is not only time-consuming and costly, but also results in high testing costs due to fuel consumption, vehicle wear and tear, and labor costs incurred during long-distance driving. Furthermore, actual high-altitude environment testing faces many uncontrollable factors, such as weather changes and road condition variations, which can interfere with the accuracy and reliability of test results, making it impossible to accurately adjust the in-vehicle comfort system. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an autonomous driving device that simulates high-altitude air pressure. This autonomous driving device focuses on the performance testing of components such as the car seat comfort system. By constructing different atmospheric pressure environments and driving posture scenarios, it accurately obtains the working status data of the components.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] An autonomous driving device simulating high-altitude air pressure includes a controller and a detection component, the autonomous driving device further including:
[0007] A pressure simulation chamber, configured to simulate different atmospheric pressure environments, and
[0008] A driving simulator platform is configured to simulate different driving postures within the pressure simulation chamber.
[0009] The simulated driving platform includes a car seat, which includes a back airbag, side airbags, and an air supply source.
[0010] The controller simulates different road conditions under different atmospheric pressures by adjusting the air pressure value of the air pressure simulation chamber and controlling different postures of the simulated driving platform. The detection component is used to detect the working status of the back airbag, side airbags and air supply source under different environments.
[0011] Furthermore, the operating conditions include the height of the back airbag in high-altitude environments, the response time of the side wing support during cornering, and the operating electrical performance of the air pump.
[0012] Furthermore, the pressure inside the pressure simulation chamber is regulated by a vacuum pump, and the pressure inside the pressure simulation chamber is detected by a pressure sensor.
[0013] Furthermore, the pressure simulation chamber includes a chamber body and a door that is hinged to the chamber body, and the door is equipped with a transparent viewing window.
[0014] Furthermore, a sealing ring is provided on the cabin body, and the sealing ring is disposed between the cabin door and the cabin body.
[0015] Furthermore, the driving simulation platform is a six-degree-of-freedom platform, which includes a chassis and at least three degree-of-freedom adjustment components configured on the chassis. The degree-of-freedom adjustment components are equipped with mounting platforms, and the car seat is configured on the mounting platforms.
[0016] Furthermore, the degree-of-freedom adjustment assembly includes a first hinge seat mounted on the bottom of the mounting platform, a second hinge seat mounted on the top of the chassis, and a linear drive device disposed between the first hinge seat and the second hinge seat.
[0017] Furthermore, the hatch includes a hatch frame, and the transparent window is disposed on the outside of the hatch frame.
[0018] Furthermore, the hatch frame is fitted with sealed glass located inside the transparent viewing window.
[0019] Furthermore, a control panel is provided outside the air pressure simulation chamber, and the controller is installed inside the control panel.
[0020] Due to the adoption of the above technical solutions, this utility model has the following beneficial effects:
[0021] 1. This invention, through a vacuum pump and pressure sensor in conjunction with a controller, can precisely adjust and maintain the target air pressure value within the air pressure simulation chamber, simulating a low atmospheric pressure environment. Compared to the traditional method of driving a car to a high-altitude area for testing, this eliminates the need for long-distance driving, significantly reducing fuel consumption, vehicle wear and tear, and labor costs, thus significantly lowering the cost of comfort system testing. The simulated driving platform adopts a six-degree-of-freedom design, enabling movement in six dimensions: pitch, roll, yaw, longitudinal translation, lateral translation, and vertical displacement, accurately simulating driving postures under different road conditions. Combined with the high-altitude environment created by the air pressure simulation chamber, it can comprehensively simulate the real operating conditions of a car driving in high-altitude areas. This makes the data obtained by the testing components, such as the back airbag deployment height, side wing support response time, and air pump operating electrical performance, more closely resemble actual usage conditions, effectively improving the accuracy and reliability of the test results and providing a strong basis for the precise calibration of the vehicle comfort system.
[0022] The air pressure simulation chamber of this utility model uses high-strength materials for its body, combined with sealing rings and reinforcing ribs, which enhances the chamber's pressure resistance and structural stability under high and low air pressure environments, ensuring a stable air pressure environment inside the chamber. The double-layered glass (transparent window and sealed glass) and door frame design of the door not only ensure a good field of vision but also improve sealing performance. The reasonable layout and selection of the chassis and degree-of-freedom adjustment components of the simulated driving platform make the platform move stably and accurately. Attached Figure Description
[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of this utility model, and are not intended to limit this utility model.
[0024] Figure 1 This is a planar structural diagram of the present invention.
[0025] Figure 2 This is a three-dimensional structural diagram of the present invention.
[0026] Figure 3 This is an exploded view of the structure of this utility model.
[0027] Figure 4 This is the first cross-sectional view of this utility model.
[0028] Figure 5 This is the second cross-sectional view of the present invention.
[0029] Figure 6 This is an enlarged view of the hatch structure of this utility model.
[0030] Figure 7 This is the first structural diagram of the simulated driving platform of this utility model.
[0031] Figure 8 This is the second structural diagram of the simulated driving platform of this utility model.
[0032] Figure label:
[0033] In the diagram, 100. Pressure simulation chamber; 110. Chamber body; 111. Sealing ring; 112. Reinforcing rib; 120. Door; 121. Transparent window; 122. Door frame; 123. Sealed glass; 124. Handle; 200. Driving simulation platform; 210. Car seat; 211. Back airbag; 212. Side airbag; 220. Chassis; 230. Degree of freedom adjustment assembly; 231. First articulation seat; 232. Second articulation seat; 233. Linear drive device; 240. Mounting platform; 300. Control panel. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. The apparatus of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0036] Unless otherwise defined, the technical or scientific terms used in this patent document shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model patent specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an," "a," or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" indicate that the element or object preceding "comprising" encompasses the element or object listed following "comprising" or its equivalents, and do not exclude other elements or objects. Terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are used only to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. They are only for the convenience of describing this utility model 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 this utility model.
[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0038] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the features in the following embodiments can be combined with each other.
[0039] This utility model discloses an autonomous driving device that simulates high-altitude air pressure. The device includes a pressure simulation chamber 100, a driving simulator 200, a controller, detection components, and a control panel 300. The pressure simulation chamber 100, as the core space for environmental simulation, can simulate atmospheric pressure environments up to 6000 meters above sea level thanks to its unique design. The driving simulator 200, housed within the chamber, simulates various driving postures through multi-dimensional movement. The controller within the control panel 300 acts as the "brain" of the entire device, coordinating the collaborative operation of the pressure simulation chamber 100 and the driving simulator 200. Simultaneously, the detection components monitor the working status of relevant components of the car seat 210 in real time, providing a scientific basis for product performance evaluation.
[0040] Please see Figures 1-6The pressure simulation chamber 100 includes a chamber body 110 and a door 120. The chamber body 110, as the main body of the pressure simulation chamber 100, ensures that the internal space meets equipment installation requirements while effectively controlling the overall volume of the chamber. The door 120 is supported by a door frame 122, with a transparent viewing window 121 installed on the outside of the door frame 122. The door 120 uses double-layered laminated glass. This structural design not only gives the transparent viewing window 121 good light transmission, facilitating real-time observation of the interior by operators, but also provides excellent pressure resistance, enabling it to withstand pressure shocks from changes in internal air pressure without breaking. Inside the door frame 122, corresponding to the transparent viewing window 121, a sealed glass 123 is installed. The sealed glass 123 is also made of high-strength glass and is sealed to the door frame 122 using silicone sealant. The handle 124 on the outside of the hatch is made of engineering plastic with a non-slip textured surface. Its ergonomic design allows operators to easily open the hatch for equipment installation, debugging, and maintenance. A reinforcing rib 112 is added to the hatch body 110 near the hatch door. This not only enhances the hatch's ability to withstand pressure in high-altitude, low-pressure environments but also improves the structural stability of the hatch, preventing deformation caused by frequent opening and closing of the hatch and ensuring long-term reliable operation. A sealing ring 111 is installed at the junction of the hatch body 110 and the hatch door 120. The sealing ring 111 is made of fluororubber, a material with excellent aging resistance, high and low temperature resistance, and high elasticity. The sealing ring 111 is precisely embedded in the pre-processed sealing groove on the edge of the cabin 110. When the cabin door 120 is closed, under the action of the cabin door's own weight and the locking mechanism, the sealing ring 111 undergoes elastic deformation, tightly fitting the contact surface between the cabin door and the cabin body, forming a tight gas barrier, effectively preventing gas leakage inside the cabin, and ensuring the accuracy and stability of the air pressure simulation environment.
[0041] Please see Figure 7 , Figure 8The chassis 220 of the degree-of-freedom adjustment assembly 230 has six degree-of-freedom adjustment assemblies 230 evenly distributed. Each degree-of-freedom adjustment assembly 230 has a mounting platform 240 on its top. The car seat 210 is fixedly mounted on the mounting platform 240 with high-strength bolts. The core component of the degree-of-freedom adjustment assembly 230 is a servo electric cylinder, whose two ends are hinged to the first hinge seat 231 and the second hinge seat 232, respectively. The first hinge seat 231 is fixedly mounted on the bottom of the mounting platform 240 with bolts, while the second hinge seat 232 is fixedly mounted on the top of the chassis 220. The servo electric cylinder has a built-in high-precision displacement sensor and encoder, which can provide real-time feedback on the extension and retraction displacement and movement speed of the piston rod. Taking the roll motion during a simulated vehicle turn as an example, when the controller receives the simulated turn command, it sends a control signal to the servo electric cylinder at the corresponding position according to the preset roll angle parameters. The motor driving the lead screw of the servo electric cylinder rotates, causing the piston rod to extend and retract. Through the hinge action of the first hinge seat 231 and the second hinge seat 232, the mounting platform 240 rotates around the X-axis, thereby realizing the roll motion of the car seat 210. Throughout the entire movement, the displacement sensor and encoder of the servo electric cylinder feed back the displacement and speed data of the piston rod to the controller in real time. The controller adjusts the operating state of the servo electric cylinder in real time based on the feedback data to ensure that the angle and speed of the roll motion are highly consistent with the preset parameters, accurately simulating the roll posture in real driving scenarios. Similarly, when simulating the vertical displacement of the vehicle on a bumpy road surface, the controller controls the corresponding servo electric cylinder to work together, causing the mounting platform 240 to move up and down in the vertical direction, simulating the vertical displacement of the seat when the vehicle is bumpy. Through the coordinated control of six servo electric cylinders, the simulated driving platform 200 can achieve precise movement in six degrees of freedom: pitch (±15°), roll (±15°), yaw (±15°), longitudinal translation (±50mm), lateral translation (±50mm), and vertical displacement (±50mm), providing a rich variety of driving posture simulation scenarios for testing automotive seat comfort systems.
[0042] The car seat 210 is made of the same material as an actual car seat, combining genuine leather with high-elasticity foam to ensure the realism and reliability of the simulation test. The seat is equipped with a back airbag 211 and side airbags 212. The air supply is an air pump. During simulated high-altitude environment testing, as the air pressure inside the pressure simulation chamber 100 gradually decreases, the controller activates the air pump according to a preset program, inflating the back airbag 211. Due to the decrease in external air pressure, the internal gas pressure of the back airbag 211 relatively increases, causing the airbag to gradually push outwards. A displacement sensor installed on the back of the seat detects the extension height of the back airbag 211 in real time and transmits the data to a detection component, which then sends it to the controller for recording and analysis. When the simulated vehicle turns, the controller, while controlling the simulated driving platform 200 to perform a roll motion, sends a command to the air pump, causing it to rapidly inflate the side airbags 212. Pressure sensors mounted on the side airbags 212 monitor pressure changes within the airbags in real time. By detecting the time required for the airbag pressure to rise from its initial state to reach effective support pressure, the side airbag support response time is calculated, and the data is transmitted to the controller. Furthermore, the detection assembly also uses current and voltage sensors to monitor the air pump's operating voltage, current, and power, providing comprehensive data support for air pump performance evaluation and fault diagnosis.
[0043] The air pressure regulation of the pressure simulation chamber 100 relies on the coordinated operation of a vacuum pump and a pressure sensor. The vacuum pump is a high-vacuum, high-pumping-rate rotary vane vacuum pump, connected to the interior of the chamber 110 via a high-pressure resistant rubber tube. When simulating a high-altitude, low-pressure environment, the vacuum pump activates, rapidly extracting air from the chamber and quickly reducing the pressure to a negative pressure state. The pressure sensor is a high-precision diffused silicon pressure sensor, installed on the inner wall of the chamber 110, capable of real-time and accurate detection of air pressure changes and transmitting the pressure data to the controller in the form of an electrical signal. The controller is configured to receive the data from the pressure sensor and compare it with a preset target air pressure value. When the cabin pressure is higher than the target value, the controller increases the operating power of the vacuum pump to accelerate the pumping speed; when the cabin pressure is lower than the target value, the controller reduces the operating power of the vacuum pump or briefly shuts it off. Simultaneously, it controls the air supply valve to open as needed, adding a small amount of air to the cabin. This achieves precise regulation and stable maintenance of the air pressure within the pressure simulation chamber 100, ensuring that the simulated environment closely matches the real high-altitude air pressure environment. The driving simulation platform 200 adopts a six-degree-of-freedom platform design, capable of simulating various motion postures of a vehicle during actual driving.
[0044] The controller uses a high-performance ARM microprocessor as its core, coupled with a rich array of interface circuits, including analog signal input interfaces, digital signal input / output interfaces, and communication interfaces. Through the analog signal input interface, the controller connects to pressure sensors within the pressure simulation chamber 100, and displacement and pressure sensors on the car seat 210, to collect various analog signal data in real time. Through the digital signal input / output interface, the controller controls the start / stop and adjusts the operating parameters of equipment such as the vacuum pump, servo electric cylinder, and air pump. Through the communication interface, the controller communicates with a host computer, receiving test commands and parameter settings from the host computer, and simultaneously uploading the test data to the host computer for storage and analysis.
[0045] The controller can simultaneously handle multiple tasks, including air pressure regulation, driving posture simulation, and data acquisition and analysis. During air pressure regulation, the controller precisely controls the vacuum pump based on feedback data from pressure sensors to ensure the cabin air pressure remains stable at the target value. During driving posture simulation, the controller generates corresponding motion control commands according to the test scenario requirements, controlling the movement of servo electric cylinders to achieve six degrees of freedom motion of the simulated driving platform 200. In terms of data acquisition and analysis, the controller performs filtering, calibration, and other preprocessing on the data transmitted from the detection components. Then, combined with preset performance evaluation standards, it monitors and judges the working status of relevant automotive seat components in real time. Once abnormal data is detected, an alarm signal is immediately issued, and fault information is displayed on the control panel 300's screen, reminding the operator to check and handle the issue. The detection components consist of various sensors and data acquisition modules.
[0046] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. An autonomous driving device simulating high-altitude air pressure, comprising a controller and a detection component, characterized in that, The autonomous driving device also includes: A pressure simulation chamber, configured to simulate different atmospheric pressure environments, and A driving simulator platform is configured to simulate different driving postures within the pressure simulation chamber. The simulated driving platform includes a car seat, which includes a back airbag, side airbags, and an air supply source. The controller simulates different road conditions under different atmospheric pressures by adjusting the air pressure value of the air pressure simulation chamber and controlling different postures of the simulated driving platform. The detection component is used to detect the working status of the back airbag, side airbags and air supply source under different environments.
2. The automatic driving device according to claim 1, characterized in that, The operating conditions include the height of the back airbag in high-altitude environments, the response time of the side wing support during turns, and the operating electrical performance of the air pump.
3. The automatic driving device according to claim 1, characterized in that, The pressure inside the pressure simulation chamber is regulated by a vacuum pump, and the pressure inside the chamber is detected by a pressure sensor.
4. The automatic driving device according to claim 1, characterized in that, The pressure simulation chamber includes a chamber body and a door that is hinged to the chamber body, and the door is equipped with a transparent viewing window.
5. The automatic driving device according to claim 4, characterized in that, The cabin is equipped with a sealing ring, which is disposed between the cabin door and the cabin.
6. The automatic driving device according to claim 1, characterized in that, The driving simulation platform is a six-degree-of-freedom platform, which includes a chassis and at least three degree-of-freedom adjustment components configured on the chassis. The degree-of-freedom adjustment components are equipped with mounting platforms, and the car seat is configured on the mounting platforms.
7. The automatic driving device according to claim 6, characterized in that, The degree-of-freedom adjustment assembly includes a first hinge seat mounted on the bottom of the mounting platform, a second hinge seat mounted on the top of the chassis, and a linear drive device disposed between the first hinge seat and the second hinge seat.
8. The automatic driving device according to claim 4, characterized in that, The hatch includes a hatch frame, and the transparent window is disposed on the outside of the hatch frame.
9. The automatic driving device according to claim 8, characterized in that, The door frame is fitted with sealed glass on the inside of the transparent viewing window.
10. The automatic driving device according to claim 1, characterized in that, The pressure simulation chamber is equipped with a control panel outside, and the controller is installed inside the control panel.