Anti-hopping system for a vehicle based on pressure sensitive sensors and vehicle

Abstract

The application discloses a kind of based on pressure sensor's automobile anti bottoming system and automobile, including first pressure sensor, control module and warning module, wherein first pressure sensor is used to install in automobile bottom position, detect first pressure signal, control module is used to generate warning instruction according to first pressure signal, warning module is used to issue warning signal under the control of warning instruction, based on pressure sensor's automobile anti bottoming system can be installed on car.The application based on pressure sensor's automobile anti bottoming system, by first pressure sensor detects the risk of automobile and speed bump or road shoulder stone etc. Road surface protruding object collision, when there is bottoming risk, warning signal is issued, to remind driver etc. In-vehicle personnel pay attention to bottoming risk, so as to take safety measures, reduce bottoming risk, maintain automobile use safety, while having the advantages of low use and maintenance cost, durable and reliable, strong anti-interference capability.The application is widely applied in the field of automobile technology.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and in particular to an anti-bottoming system for automobiles based on pressure-sensitive sensors and an automobile. Background Technology

[0002] When a car encounters a speed bump or curb while driving, if the ground clearance is less than the height of the bump, the chassis may collide with it, a phenomenon commonly known as bottoming out. Botting out can damage the car's chassis, creating safety hazards or even causing an accident. This is especially true for electric vehicles, where the battery pack is typically located under the vehicle; bottoming out can damage the battery pack, causing serious property damage, and even leading to fires or explosions. Summary of the Invention

[0003] In view of the technical problems such as the risk of cars bottoming out, the purpose of this invention is to provide a car bottoming-out prevention system and a car based on pressure-sensitive sensors.

[0004] On one hand, embodiments of the present invention include a vehicle bottom-scraping prevention system based on a pressure-sensitive sensor, the vehicle bottom-scraping prevention system based on a pressure-sensitive sensor comprising:

[0005] A first pressure-sensitive sensor; the first pressure-sensitive sensor is installed at the bottom of the car and is used to detect a first pressure signal;

[0006] Control module; the control module is used to generate a warning command based on the first pressure signal;

[0007] Warning module; the warning module is used to issue a warning signal under the control of the warning command.

[0008] Further, generating a warning command based on the first pressure signal includes:

[0009] The magnitude of the first pressure is determined based on the first pressure signal;

[0010] When the first pressure reaches the pressure threshold, the warning instruction is generated.

[0011] Furthermore, the pressure-sensitive sensor-based vehicle bottom-out protection system also includes a variable suspension module;

[0012] The control module is used to generate a first control command based on the first pressure signal;

[0013] The variable suspension module is used to adjust the suspension height under the control of the first control command.

[0014] Further, generating a warning command based on the first pressure signal includes:

[0015] The magnitude of the first pressure is determined based on the first pressure signal;

[0016] Obtain the second pressure magnitude;

[0017] When the pressure difference between the first pressure magnitude and the second pressure magnitude reaches the pressure threshold, the warning instruction is generated.

[0018] Further, generating the first control command based on the first pressure signal includes:

[0019] The magnitude of the first pressure is determined based on the first pressure signal;

[0020] Obtain the second pressure magnitude;

[0021] The target height is determined based on the pressure difference between the first pressure magnitude and the second pressure magnitude; the target height is positively correlated with the absolute value of the pressure difference.

[0022] Based on the target height, the first control command is generated; the first control command is used to control the variable suspension module to adjust the suspension height to the target height.

[0023] Furthermore, the pressure-sensitive sensor-based vehicle bottom-scraping prevention system also includes a second pressure-sensitive sensor; the second pressure-sensitive sensor is used to be installed on the vehicle body at a position higher than the bottom of the vehicle.

[0024] The process of obtaining the second pressure magnitude includes:

[0025] The second pressure signal is detected by the second pressure sensor;

[0026] The magnitude of the second pressure is determined based on the second pressure signal.

[0027] Furthermore, the vehicle bottom-out protection system based on pressure-sensitive sensors also includes a vehicle speed sensor;

[0028] The process of obtaining the second pressure magnitude includes:

[0029] The vehicle speed is detected by the vehicle speed sensor;

[0030] The magnitude of the second pressure is determined based on the vehicle speed.

[0031] Furthermore, the pressure-sensitive sensor-based vehicle bottom-scraping prevention system also includes a positioning module;

[0032] The control module is also used to obtain the location of the vehicle when the first control command is generated through the positioning module, and record the location of the vehicle as the target location.

[0033] Furthermore, the control module is also used to obtain the real-time position of the vehicle through the positioning module, and generate a second control command based on the real-time position and the target position;

[0034] The variable suspension module is used to adjust the suspension height under the control of the second control command.

[0035] On the other hand, embodiments of the present invention also include a vehicle equipped with a vehicle anti-bottoming system based on a pressure-sensitive sensor as described in the embodiments.

[0036] The beneficial effects of this invention are as follows: The car bottoming-out prevention system based on pressure-sensitive sensors in the embodiments can detect the risk of collision between the car and road protrusions such as speed bumps or curbs through a first pressure-sensitive sensor. When there is a risk of bottoming out, a warning signal is issued to remind the driver and other occupants of the car to pay attention to the risk of bottoming out, thereby taking safety measures to reduce the risk of bottoming out and maintain the safety of car use. The first pressure-sensitive sensor used has the advantages of low use and maintenance costs, durability and reliability, and strong anti-interference ability, thereby making the car bottoming-out prevention system based on pressure-sensitive sensors highly reliable. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the vehicle bottom-out protection system based on a pressure-sensitive sensor in the embodiment;

[0038] Figure 2 A schematic diagram of a car structure that can be used to apply a pressure-sensitive sensor-based car bottom-scraping system;

[0039] Figure 3 and Figure 4 This is a schematic diagram illustrating the effect of the car anti-bottoming system based on a pressure-sensitive sensor in the embodiment. Detailed Implementation

[0040] In this embodiment, refer to Figure 1 The pressure-sensitive sensor-based vehicle bottom-out protection system comprises a control module, a first pressure-sensitive sensor, a warning module, a variable suspension module, a second pressure-sensitive sensor, a vehicle speed sensor, and a positioning module. These components, including the first pressure-sensitive sensor, warning module, variable suspension module, second pressure-sensitive sensor, vehicle speed sensor, and positioning module, are connected to the control module via a CAN bus, and data and commands are transmitted between the components via the CAN bus.

[0041] In this embodiment, the basic functions of a pressure-sensitive sensor-based vehicle bottom-out protection system can be achieved through the combination of a control module, a first pressure-sensitive sensor, and a warning module. Furthermore, more functions can be implemented using a variable suspension module, a second pressure-sensitive sensor, a vehicle speed sensor, and a positioning module.

[0042] In this embodiment, the pressure-sensitive sensor-based vehicle bottom-scraping prevention system can be applied to... Figure 2 On the car structure shown. (Refer to...) Figure 2 The first pressure-sensitive sensor is installed under the car, specifically on the car's underbody spoiler. The underbody spoiler can be closer to the ground than the car chassis, and the installation position of the first pressure-sensitive sensor can be flush with the chassis or closer to the ground than the chassis.

[0043] The first pressure sensor can detect pressure generated by contact with a foreign object or by airflow. In this embodiment, the indicator detected by the first pressure sensor can also be pressure intensity; there is no distinction between "pressure" and "pressure intensity".

[0044] In this embodiment, the pressure signal detected by the first pressure sensor is referred to as the first pressure signal. The first pressure sensor sends the first pressure signal to the control module.

[0045] After receiving the first pressure signal, the control module analyzes the first pressure signal to determine the pressure magnitude detected by the first pressure sensor, i.e., the first pressure magnitude.

[0046] In this embodiment, a pressure threshold is preset in the control module. The control module compares the first pressure magnitude with the pressure threshold. When the first pressure magnitude reaches the pressure threshold, it can be determined that the first pressure magnitude has reached a large level, and it can be determined that the first pressure sensor installed on the underbody spoiler has been hit by a road protrusion such as a speed bump or curb, that is, it is determined that there is a risk of bottoming out, and the control module generates a warning command.

[0047] The control module sends a warning command to the warning module. In this embodiment, the warning module can be an indicator light or a buzzer, and it can be installed on the dashboard or other locations. Upon receiving the warning command, the warning module can issue a warning signal through flashing lights or an alarm sound. This warning signal alerts the driver and other occupants to the risk of the vehicle bottoming out, prompting them to take measures such as slowing down, braking, getting out to check, changing lanes, or abandoning the attempt to proceed, thereby reducing the risk of bottoming out and ensuring vehicle safety.

[0048] In this embodiment, refer to Figure 2 , Figure 3 and Figure 4 The pressure-sensitive sensor-based vehicle bottom-out protection system also includes a variable suspension module. Specifically, the variable suspension module can be an air suspension that can adjust the suspension height according to control commands, thereby adjusting the chassis's ground clearance.

[0049] In this embodiment, after receiving the first pressure signal, the control module can generate a first control command triggered by the first pressure signal and send the first control command to the variable suspension module. Triggered by the first control command, the variable suspension module adjusts the suspension height, for example, adjusting the suspension height to the highest position or a fixed value, thereby increasing the chassis's ground clearance and reducing the risk of bottoming out.

[0050] For example, Figure 3 Before adjusting the suspension height, the chassis of the CRRC's variable suspension module had a low ground clearance, posing a risk of bottoming out. After adjusting the suspension height, as... Figure 4 As shown, the increased ground clearance of the chassis reduces or even eliminates the risk of bottoming out.

[0051] In this embodiment, when the control module generates a warning command based on the first pressure signal, it can perform the following steps:

[0052] P1. Determine the magnitude of the first pressure based on the first pressure signal;

[0053] P2. Obtain the magnitude of the second pressure;

[0054] P3. When the pressure difference between the first pressure magnitude and the second pressure magnitude reaches the pressure threshold, a warning command is generated.

[0055] In step P1, the control module analyzes the first pressure signal to determine the pressure magnitude detected by the first pressure sensor, i.e., the first pressure magnitude.

[0056] In step P2, the control module can obtain the second pressure magnitude in two ways: (1) by using a second pressure sensor installed on the car body at a position higher than the bottom of the car (such as the air intake grille, A-pillar, or roof), the second pressure signal is detected, the second pressure signal is analyzed, and the pressure magnitude detected by the second pressure sensor is determined, i.e., the second pressure magnitude; (2) by using a vehicle speed sensor (specifically, a wheel speed sensor or an onboard satellite navigation system) to detect the vehicle speed, and by querying the data table stored locally based on the vehicle speed to obtain the second pressure magnitude.

[0057] In step P2, in the first method, since the second pressure sensor is installed on the vehicle body in a position not affected by road protrusions, the second pressure obtained by the first method is the pressure generated by the airflow facing the vehicle during actual driving. In the second method, the correspondence between vehicle speed and airflow pressure can be detected in advance through wind tunnel tests and other methods, and then stored in a data table. The corresponding airflow pressure can be read from the data table by the measured vehicle speed. Therefore, the second pressure obtained by the second method is the pressure generated by the airflow that the vehicle theoretically faces at a certain driving speed.

[0058] In step P3, the control module calculates the absolute value of the pressure difference between the first pressure magnitude and the second pressure magnitude. When the absolute value reaches the pressure threshold, it can be determined that the difference between the first pressure magnitude and the second pressure magnitude is large. The control module generates a warning command and controls the warning module to issue a warning signal.

[0059] The principle behind steps P1-P3 is as follows: The second pressure magnitude obtained in step P2 is the pressure generated by the airflow facing the car body during driving. The first pressure sensor installed under the car also faces the airflow during driving. Therefore, when the first pressure sensor does not touch the road protrusion, the first pressure magnitude detected by the first pressure sensor is the pressure generated by the airflow facing the car's underside during driving. When there is no road protrusion or the distance to the road protrusion is far, the difference in pressure between the airflow facing the car body and the underside is small. When the pressure difference between the first and second pressure magnitudes reaches the pressure threshold, it can be determined that the airflow facing the car's underside has been affected by the road protrusion and changed. Therefore, it can be determined that the car is close to the road protrusion and there is a risk of bottoming out. A warning command is generated to issue a warning so that the driver can take timely safety measures to protect driving safety.

[0060] In this embodiment, when the control module generates a first control command based on the first pressure signal, it can perform the following steps:

[0061] P4. Determine the magnitude of the first pressure based on the first pressure signal;

[0062] P5. Obtain the magnitude of the second pressure;

[0063] P6. Determine the target height based on the pressure difference between the first and second pressure magnitudes;

[0064] P7. Generate the first control command based on the target altitude.

[0065] Step P4 is the same as step P1. Step P5 is the same as step P2, and the second pressure magnitude can also be obtained through either method (1) or method (2).

[0066] In step P6, the control module calculates the absolute value of the pressure difference between the first pressure magnitude and the second pressure magnitude, sets a positive correlation function (e.g., a direct proportional function), uses the absolute value of the pressure difference between the first pressure magnitude and the second pressure magnitude as the independent variable, and substitutes it into the positive correlation function to calculate the target height. Therefore, the larger the absolute value of the pressure difference between the first pressure magnitude and the second pressure magnitude, the larger the target height.

[0067] In step P7, the control module generates a first control command based on the target height. After the first control command is sent to the variable suspension module, the variable suspension module can adjust the suspension height to the target height according to the first control command.

[0068] Similar to steps P1-P3, the principle of steps P4-P7 is as follows: The second pressure magnitude obtained in step P5 is the pressure generated by the airflow facing the car body during driving. The first pressure sensor installed under the car also faces the airflow during driving. Therefore, when the first pressure sensor does not touch the road bump, the first pressure magnitude detected by the first pressure sensor is the pressure generated by the airflow facing the car bottom during driving. When there are no road bumps or the distance to road bumps is far, the difference in pressure between the airflow facing the car body and the car bottom is small. However, the closer to the road bump and the higher the road bump, the greater the influence of the road bump on the pressure of the airflow on the first pressure sensor, and the greater the difference in pressure between the airflow facing the car body and the car bottom. Accordingly, a larger target height is determined in step P6, so that when executing step P7, the variable suspension module can be controlled to adjust to a larger suspension height, reducing the risk of bottoming out by nearby and higher road bumps and protecting driving safety.

[0069] By executing steps P1-P3 and / or steps P4-P7, the presence of road bumps can be detected when the vehicle is far from the road bump, thereby predicting the risk of bottoming out in advance and implementing safety measures to protect driving safety. On the other hand, the presence of road bumps can be detected without the first pressure sensor actually colliding with the road bump, which helps to extend the service life of the pressure sensor-based vehicle bottoming-out prevention system.

[0070] In this embodiment, the positioning module can be an in-vehicle satellite navigation system. The positioning module can detect the vehicle's position at various times and send the detected position to the control module in real time.

[0071] When the control module executes the step of "generating the first control command based on the first pressure signal" (for example, executing any step P4-P7), it records the current position of the vehicle as the target position. Based on the principle of steps P4-P7, when executing the step of "generating the first control command based on the first pressure signal," the vehicle encounters or is about to encounter a road bump; the recorded target position at this time indicates the location of the road bump.

[0072] Based on the target position recorded by the control module, the control module can obtain the real-time position of the vehicle through the positioning module and calculate the distance between the real-time position and the target position. When the distance between the real-time position and the target position reaches a distance threshold, the control module generates a second control command and sends it to the variable suspension module. Under the control of the second control command, the variable suspension module can adjust the suspension height in advance when there is a certain distance between the vehicle and road bumps, thereby increasing the ground clearance of the chassis and reducing the risk of bottoming out. The process of adjusting the suspension height can be gradually performed as the vehicle approaches the target position, making the adjustment process smoother, improving driving and riding comfort, and also helping to reduce vehicle wear and tear.

[0073] The pressure-sensitive sensor-based vehicle bottom-out protection system in this embodiment can be installed on a vehicle, thereby giving the vehicle advantages such as low bottom-out risk, good safety performance, and high driving and riding comfort.

[0074] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," and "right" used in this disclosure are only relative to the relative positional relationships of the various components of this disclosure in the accompanying drawings. The singular forms "a," "described," and "the" used in this disclosure are also intended to include the plural forms, unless the context clearly indicates otherwise. Moreover, unless otherwise defined, all technical and scientific terms used in this embodiment have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this embodiment specification is only for describing particular embodiments and is not intended to limit the invention. The term "and / or" as used in this embodiment includes any combination of one or more of the associated listed items.

[0075] It should be understood that although the terms first, second, third, etc., may be used to describe various elements in this disclosure, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from each other. For example, a first element may also be referred to as a second element without departing from the scope of this disclosure, and similarly, a second element may also be referred to as a first element. The use of any and all instances or exemplary language (“e.g.,” “such as,” etc.) provided in this embodiment is intended only to better illustrate embodiments of the invention and, unless otherwise required, does not impose a limitation on the scope of the invention.

[0076] It should be recognized that embodiments of the present invention can be implemented or carried out by computer hardware, a combination of hardware and software, or by computer instructions stored in a non-transitory computer-readable storage medium. The method can be implemented using standard programming techniques—including a non-transitory computer-readable storage medium configured with a computer program, wherein such a storage medium causes the computer to operate in a specific and predefined manner—according to the methods and drawings described in the specific embodiments. Each program can be implemented in a high-level procedural or object-oriented programming language to communicate with the computer system. However, if desired, the program can be implemented in assembly or machine language. In any case, the language can be a compiled or interpreted language. Furthermore, for this purpose, the program can run on a programmed application-specific integrated circuit (ASIC).

[0077] Furthermore, the procedures described in this embodiment can be performed in any suitable order unless otherwise indicated by this embodiment or clearly contradicted by the context. The procedures (or variations and / or combinations thereof) described in this embodiment can be executed under the control of one or more computer systems configured with executable instructions, and can be implemented by hardware or a combination thereof as code (e.g., executable instructions, one or more computer programs, or one or more applications) that commonly executes on one or more processors. The computer program includes a plurality of instructions executable by one or more processors.

[0078] Furthermore, the method can be implemented in any suitable type of computing platform, including but not limited to personal computers, minicomputers, mainframes, workstations, networked or distributed computing environments, standalone or integrated computer platforms, or in communication with charged particle tools or other imaging devices. Aspects of the invention can be implemented as machine-readable code stored on a non-transitory storage medium or device, whether removable or integrated into a computing platform, such as a hard disk, optical read and / or write storage medium, RAM, ROM, etc., such that it is readable by a programmable computer, and when the storage medium or device is read by the computer, it can be used to configure and operate the computer to perform the processes described herein. Furthermore, the machine-readable code, or portions thereof, can be transmitted via wired or wireless networks. The invention described in this embodiment includes these and other different types of non-transitory computer-readable storage media when such media comprises instructions or programs that implement the steps described above in conjunction with a microprocessor or other data processor. When programmed according to the methods and techniques described in the invention, the invention also includes the computer itself.

[0079] A computer program can be applied to input data to perform the functions described in this embodiment, thereby transforming the input data to generate output data stored in non-volatile memory. The output information can also be applied to one or more output devices, such as a display. In a preferred embodiment of the invention, the transformed data represents physical and tangible objects, including specific visual depictions of physical and tangible objects generated on the display.

[0080] The above description is merely a preferred embodiment of the present invention. The present invention is not limited to the above-described embodiments. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention, as long as they achieve the technical effects of the present invention by the same means, should be included within the scope of protection of the present invention. Within the scope of protection of the present invention, the technical solutions and / or implementation methods can have various modifications and variations.

Claims

1. A vehicle bottom-scraping prevention system based on a pressure-sensitive sensor, characterized in that, The pressure-sensitive sensor-based vehicle bottom-scraping prevention system includes: A first pressure-sensitive sensor; the first pressure-sensitive sensor is installed at the bottom of the car and is used to detect a first pressure signal; Control module; the control module is used to generate a warning command based on the first pressure signal; Warning module; the warning module is used to issue a warning signal under the control of the warning command; A variable suspension module; the control module is used to generate a first control command based on the first pressure signal, and the variable suspension module is used to adjust the suspension height under the control of the first control command; The step of generating a first control command based on the first pressure signal includes: The magnitude of the first pressure is determined based on the first pressure signal; Obtain the second pressure magnitude; The target height is determined based on the pressure difference between the first pressure magnitude and the second pressure magnitude; the target height is positively correlated with the absolute value of the pressure difference. Based on the target height, the first control command is generated; the first control command is used to control the variable suspension module to adjust the suspension height to the target height.

2. The vehicle bottom-out protection system based on a pressure-sensitive sensor according to claim 1, characterized in that, The step of generating a warning command based on the first pressure signal includes: The magnitude of the first pressure is determined based on the first pressure signal; When the first pressure reaches the pressure threshold, the warning instruction is generated.

3. The vehicle bottom-out protection system based on a pressure-sensitive sensor according to claim 1, characterized in that, The step of generating a warning command based on the first pressure signal includes: The magnitude of the first pressure is determined based on the first pressure signal; Obtain the second pressure magnitude; When the pressure difference between the first pressure magnitude and the second pressure magnitude reaches the pressure threshold, the warning instruction is generated.

4. The vehicle bottom-out protection system based on a pressure-sensitive sensor according to any one of claims 1-3, characterized in that, The pressure-sensitive sensor-based vehicle bottom-scraping system also includes a second pressure-sensitive sensor; the second pressure-sensitive sensor is used to be installed on the vehicle body at a position higher than the bottom of the vehicle. The process of obtaining the second pressure magnitude includes: The second pressure signal is detected by the second pressure sensor; The magnitude of the second pressure is determined based on the second pressure signal.

5. The vehicle bottom-out protection system based on a pressure-sensitive sensor according to any one of claims 1-3, characterized in that, The pressure-sensitive sensor-based vehicle bottom-scraping system also includes a vehicle speed sensor; The process of obtaining the second pressure magnitude includes: The vehicle speed is detected by the vehicle speed sensor; The magnitude of the second pressure is determined based on the vehicle speed.

6. The vehicle bottom-scraping prevention system based on a pressure-sensitive sensor according to claim 1, characterized in that, The pressure-sensitive sensor-based vehicle bottom-scraping prevention system also includes a positioning module; The control module is also used to obtain the location of the vehicle when the first control command is generated through the positioning module, and record the location of the vehicle as the target location.

7. The vehicle bottoming-out prevention system based on a pressure-sensitive sensor according to claim 6, characterized in that: The control module is also used to obtain the real-time position of the vehicle through the positioning module, and generate a second control command based on the real-time position and the target position; The variable suspension module is used to adjust the suspension height under the control of the second control command.

8. A car, characterized in that, The vehicle is equipped with a vehicle anti-bottoming system based on a pressure-sensitive sensor as described in any one of claims 1-7.

Images