CN112440631A - Tire pressure adjusting device, method and system and vehicle - Google Patents
Tire pressure adjusting device, method and system and vehicle Download PDFInfo
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- CN112440631A CN112440631A CN202011205436.6A CN202011205436A CN112440631A CN 112440631 A CN112440631 A CN 112440631A CN 202011205436 A CN202011205436 A CN 202011205436A CN 112440631 A CN112440631 A CN 112440631A
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- tire pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/16—Arrangement of air tanks mounted on vehicles
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- Mechanical Engineering (AREA)
- Tires In General (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
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Abstract
The application provides a device, a method and a system for adjusting tire pressure and a vehicle, and relates to the technical field of vehicles. According to the weather state, the road surface condition and the running speed of the vehicle, the tire pressure of the vehicle is regulated in the running process of the vehicle, the vehicle is guaranteed to run with the optimal tire pressure, and the running safety and the running economy are further guaranteed. The tire pressure regulating device includes: the device comprises a tire inflation tube, a travelling crane inflation mechanism and a drive control mechanism; the air outlet end of the tire inflation tube is connected with the inner side of a tire of the vehicle through a one-way valve, and the air inlet end of the tire inflation tube is connected with the driving inflation mechanism; when the drive control mechanism receives an inflation signal, the one-way valve is opened, and the drive control mechanism drives the travelling crane inflation mechanism to do work so as to inflate the tire through the tire inflation tube.
Description
Technical Field
The application relates to the technical field of vehicles, in particular to a device, a method and a system for adjusting tire pressure and a vehicle.
Background
With the increase of income of people and the continuous decline of automobile selling price, the automobile is gradually popularized and increased as a tool for riding instead of walk of people, and more people can select to drive by themselves during holidays. However, with the popularization of automobiles, various driving accidents are also increasing, including the occurrence of tire burst during the driving process of the automobile. The driving mileage of the self-driving traveling vehicle is increased, and the service life of the tire is reduced due to poor steep road conditions.
The tire pressure of the automobile tire is very important to the safety of the automobile and the driving economy, the proper tire pressure can ensure the optimal ground gripping force of the automobile, the braking capacity of the automobile is improved, the braking distance is reduced, and the service life of the tire is ensured. Therefore, how to ensure the tire pressure of the automobile to be in a proper range is an urgent problem to be solved.
Disclosure of Invention
The embodiment of the application provides a tire pressure adjusting device, a method, a system and a vehicle, according to the running weather state, the road condition and the running speed of the vehicle, the tire pressure of the vehicle is adjusted in the running process of the vehicle, the vehicle is guaranteed to run with the best tire pressure, and then the running safety and the running economy are guaranteed.
A first aspect of embodiments of the present application provides a tire pressure regulating device, which is installed on a hub of a vehicle, the tire pressure regulating device including:
the device comprises a tire inflation tube, a travelling crane inflation mechanism and a drive control mechanism;
the air outlet end of the tire inflation tube is connected with the inner side of a tire of the vehicle through a one-way valve, and the air inlet end of the tire inflation tube is connected with the driving inflation mechanism;
when the drive control mechanism receives an inflation signal, the one-way valve is opened, and the drive control mechanism drives the travelling crane inflation mechanism to do work so as to inflate the tire through the tire inflation tube.
Optionally, an inflation tank is further arranged between the tire inflation tube and the travelling crane inflation mechanism;
the inflation tank is provided with a pressure limiting valve, an inflation valve and a first air inlet; (ii) a
The inflation valve is connected with the air inlet end of the tire inflation tube, and the first air inlet is connected with the travelling crane inflation mechanism;
when the driving control mechanism receives an inflation signal, the inflation valve and the one-way valve are opened so as to input the gas stored in the inflation tank into the tire through the tire inflation pipe, and the driving control mechanism drives the travelling crane inflation mechanism to do work so as to inflate the inflation tank through the first air inlet;
and when the pressure limiting valve detects that the air pressure in the inflation tank exceeds the safe air pressure, the pressure limiting valve is opened to exhaust the inflation tank.
Optionally, the inflator can is annular, is coaxially mounted on the hub and is matched with the hub in shape;
the travelling crane inflation mechanism comprises a plurality of inflation cylinders which are arranged at equal intervals along the circumferential direction of the inflation tank to form a circumferential structure coaxial with the inflation tank;
one end of each inflation cylinder is connected with the inflation tank, the other end of each inflation cylinder is provided with a jacking inclined plane, and a prepressing jacking pin is arranged on the circumferential wall of each inflation cylinder;
in the rotation process of the tire, the prepressing ejector pins of any two adjacent inflation cylinders are in contact, so that the ejection inclined planes of the two inflation cylinders are connected into a plane, and the driving control mechanism is in smooth transition on the ejection inclined planes when driving the travelling crane inflation mechanism to do work.
Optionally, the charge cylinder further comprises: the cylinder comprises a rebound spring, a second air inlet, a third air inlet, a cylinder body and a cylinder ejector rod;
one end of the rebound spring is connected with the bottom of the cylinder body of the air cylinder, the other end of the rebound spring is connected with the air cylinder ejector rod, and the air cylinder ejector rod is connected with the jacking inclined plane;
when the driving control mechanism receives an inflation signal, the driving control mechanism acts on the jacking inclined plane to enable the cylinder ejector rod to compress gas in the cylinder body of the cylinder and inflate the inflation tank through the second air inlet;
when the driving control mechanism leaves the jacking inclined surface, the rebound spring is reset so as to inflate the cylinder body through the third air inlet.
A second aspect of embodiments of the present application provides a method of regulating tire pressure, the method including:
when the vehicle is in a running state, receiving weather parameters, road condition parameters, vehicle running speed and current tire pressure of the vehicle;
calculating the optimal tire pressure of the vehicle according to the weather parameters, the road condition parameters and the vehicle running speed;
according to the size relationship between the optimal tire pressure and the current tire pressure, issuing a control instruction to a tire pressure adjusting device or a variable exhaust pressure limiting valve arranged on a tire of the vehicle so as to adjust the tire pressure of the vehicle to be matched with the optimal tire pressure through the tire pressure adjusting device or the variable exhaust pressure limiting valve; the tire pressure adjusting device is the tire pressure adjusting device according to the first aspect of the present application.
Optionally, the receiving the weather parameter, the road condition parameter, the vehicle driving speed and the current tire pressure of the vehicle when the vehicle is in a driving state includes:
receiving a luminous flux signal sent by a rainfall light sensor, a road condition image sent by a road surface identification camera and a first temperature signal sent by an external temperature sensor;
identifying and obtaining the weather parameters in a database according to the luminous flux signal, the road condition image and the first temperature signal;
identifying and obtaining the road condition parameters in the database according to the road condition image;
receiving the wheel rotating speed sent by a wheel speed sensor, and correcting the wheel rotating speed by using a Beidou positioning system to obtain the vehicle running speed;
and receiving the current tire pressure transmitted by the tire pressure monitoring receiver.
Optionally, identifying the road condition parameters in the database according to the road condition image includes:
when the road condition parameters matched with the road condition image cannot be obtained in the database, obtaining the current driving mode sent by the driving mode sensor;
and selecting the road condition parameters according to the current driving mode.
Optionally, issuing a control command to an adjusting tire pressure device or a variable exhaust pressure limiting valve installed on a tire of the vehicle according to a magnitude relationship between the optimal tire pressure and the current tire pressure to adjust the tire pressure of the vehicle to match the optimal tire pressure through the adjusting tire pressure device or the variable exhaust pressure limiting valve, includes:
when the optimal tire pressure is larger than the current tire pressure, the control instruction is to control the tire pressure regulating device to inflate the wheel tire;
and when the optimal tire pressure is smaller than the current tire pressure, the control instruction is to control the tire pressure regulating device to exhaust the tire of the wheel.
A third aspect of embodiments of the present application provides a tire pressure regulating system including: the system comprises a sensing system, a tire pressure monitoring system, a tire pressure controller, a tire pressure regulating device and a variable exhaust pressure limiting valve arranged on a tire of the vehicle; wherein the tire pressure regulating device is the tire pressure regulating device of the first aspect of the present application;
the sensing system includes: the system comprises a rainfall light sensor, a driving mode sensor, a road surface identification camera, a wheel speed sensor, an infrared temperature sensor, a tire temperature sensor and an outside vehicle temperature sensor;
the tire pressure monitoring system includes: a tire pressure monitoring receiver and a tire pressure monitoring sensor;
the tire pressure controller is respectively connected with the sensing system, the tire pressure monitoring system, the tire pressure regulating device and the variable exhaust pressure limiting valve, and is used for receiving signals sent by the sensing system and the tire pressure monitoring system and executing steps in the method for regulating the tire pressure according to the signals.
A fourth aspect of the embodiments of the present application provides a vehicle provided with a regulated tire pressure system according to the third aspect of the present application.
According to the embodiment of the application, the tire pressure controller is respectively connected with the sensing system, the tire pressure monitoring system, the variable exhaust pressure limiting valve, the tire pressure controller and the tire pressure adjusting device, and weather parameters in the vehicle running process are calculated according to real-time detection information sent by a rainfall light sensor, a road surface identification camera and an external temperature sensor in the sensing system; calculating road condition parameters in the driving process of the vehicle according to real-time detection information sent by a road surface identification camera and a driving mode sensor in a sensing system; calculating to obtain the running speed of the vehicle according to real-time detection information sent by a wheel speed sensor in a sensing system and a Beidou positioning system; and calculating to obtain the optimal tire pressure suitable for the current driving condition of the vehicle by combining the weather parameters, the road condition parameters and the vehicle driving speed. Meanwhile, the tire pressure controller receives the current tire pressure sent by the tire pressure monitoring system, and when the optimal tire pressure is greater than the current tire pressure, the tire pressure controller sends an exhaust signal to the variable exhaust pressure limiting valve to control the variable exhaust pressure limiting valve to exhaust the vehicle tire so as to reduce the tire pressure to the optimal tire pressure; when the optimal tire pressure is smaller than the current tire pressure, the tire pressure controller sends inflation signals to a driving control mechanism, an inflation valve and a one-way valve of the tire pressure adjusting device, controls the extension of a telescopic rod of the driving control mechanism, acts on a driving inflation mechanism, enables the driving inflation mechanism to work, and supplements compressed gas stored in an inflation tank; the inflation valve and the check valve are opened, compressed gas in the inflation tank enters the vehicle tire, the vehicle tire is rapidly inflated, and then the tire pressure of the vehicle tire is dynamically adjusted according to the objective condition of vehicle running in the vehicle running process, so that the tire pressure of the vehicle tire is kept at the optimal value of the most appropriate current temperature, road condition, weather and vehicle speed, and the vehicle running safety and the vehicle running economy are further ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural view of a tire pressure regulating device according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a tire pressure regulating device and a tire in an embodiment of the present application;
fig. 3 is a schematic structural view of a tire pressure regulating system according to an embodiment of the present application;
fig. 4 is a flowchart illustrating steps of a method for regulating tire pressure according to an embodiment of the present disclosure.
Reference numerals: a tire inflation tube-1; a one-way valve-11; a travelling crane inflating mechanism-2; a charging cylinder-21; pressing the inclined plane to be-211; prepressing the knock pin-212; a rebound spring-213; a second air inlet-214; a third air inlet-215; a cylinder block-216; a cylinder top rod-217; a drive control mechanism-3; an inflation tank-4; a pressure limiting valve-41; an inflation valve-42; a first air inlet-43; a variable exhaust pressure limiting valve-5; tire-6.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The tire pressure of the automobile tire is very important to the safety of the automobile and the driving economy, and the proper tire pressure can ensure the optimal ground gripping force of the automobile, improve the braking capacity of the automobile and reduce the braking distance. Too low tire pressure can greatly damage the service life of the tire, and too high tire pressure is easy to cause traffic accidents due to tire burst. The reasonable tire pressure can effectively reduce energy loss and improve the fuel economy of the automobile.
In the prior art, the alarm can be given only in a mode of monitoring the tire pressure when the tire pressure is too low or too high. The driver needs to stop the vehicle to inflate or exhaust the automobile tire and adjust the tire pressure. However, in some situations, for example, in a highway driving project, the tire pressure is too low, and the tire pressure needs to be adjusted only by driving to a safe area with the too low tire pressure, which is inconvenient due to labor consumption.
In addition, in the running process of the vehicle, the tire pressure monitoring always takes a fixed value as an alarm threshold value, and the tire pressure monitoring device cannot be suitable for different external conditions, such as rain and snow weather, mountain roads and the like.
In view of the above problems, the embodiments of the present application provide a method for adjusting tire pressure, which adjusts tire pressure of a vehicle during vehicle driving according to a weather state of the vehicle, a road surface condition, and a speed of the vehicle driving, so as to ensure that the vehicle drives with optimal tire pressure.
The method for regulating the tire pressure is applied to a system for regulating the tire pressure. The tire pressure regulating system includes: the system comprises a sensing system, a tire pressure monitoring system, a tire pressure controller, a tire pressure regulating device and a variable exhaust pressure limiting valve arranged on a tire of the vehicle.
Fig. 1 is a schematic structural view of a tire pressure regulating device according to an embodiment of the present application. An embodiment of the application provides a structure of adjusting tire pressure device, adjusts tire pressure device and installs on the wheel hub of vehicle, and the vehicle in-process of going adjusts tire pressure device and rotates along with the wheel hub. The reference number of the tire in fig. 1 is 6. As shown in fig. 1: the tire pressure regulating device comprises: the device comprises a tire inflation tube 1, a driving inflation mechanism 2 and a driving control mechanism 3.
The air outlet end of the tire inflation tube 1 is connected with the inner side of a tire of the vehicle through a one-way valve 11, and the air inlet end is connected with the driving inflation mechanism 2;
the check valve may refer to an air inlet capable of one-way ventilation only, and the ventilation direction of the check valve 11 is from the outside of the tire to the inside of the tire.
When the drive control mechanism 3 receives an inflation signal, the one-way valve 11 is opened, and the drive control mechanism 3 drives the driving inflation mechanism 2 to do work so as to inflate the tire through the tire inflation tube 1.
The check valve 11 is internally provided with an independent battery and a single chip microcomputer, and is communicated with the tire pressure controller through a Bluetooth signal, and when the tire pressure controller sends an inflation signal, the check valve 11 is opened.
The driving control mechanism 3 can comprise a driving motor and a telescopic rod, the telescopic rod can adopt a hydraulic telescopic rod, and the end part of the telescopic rod can be provided with a roller device. The drive control mechanism 3 may receive the inflation signal sent by the tire pressure Controller through a Controller Area Network (CAN) bus (CAN fd Controller Area Network with Flexible Data-Rate), or may receive the inflation signal sent by the tire pressure Controller through wireless communication.
When the drive control mechanism 3 receives the inflation signal, the telescopic rod of the drive control mechanism 3 extends out, and when the inflation is stopped, the telescopic rod of the drive control mechanism 3 is retracted.
When the drive control mechanism 3 receives the inflation signal, the telescopic rod is controlled to extend to contact the travelling crane inflation mechanism 2, so that the travelling crane inflation mechanism 2 does work.
In another embodiment of the present application, an inflator 4 is further disposed between the tire inflation tube 1 and the driving inflation mechanism 2. The compressed air stored in the inflator 4 is supplemented by the travelling crane inflation mechanism 2.
The inflation tank 4 is provided with a pressure limiting valve 41, an inflation valve 42 and a first air inlet 43; the inflation valve 42 is connected with the air inlet end of the tire inflation tube 1, and the first air inlet 43 is connected with the driving inflation mechanism 2;
independent batteries and a single chip microcomputer are arranged in the pressure limiting valve 41 and the inflation valve 42 and are communicated with the tire pressure controller through Bluetooth signals. The pressure limiting valve 41 and the inflation valve 42 are disposed inside the inflation tank 4, i.e., on the inner circumferential wall of the inflation tank 4.
When the driving control mechanism 3 receives an inflation signal, the inflation valve 42 and the one-way valve 11 are opened to input the gas stored in the inflation tank 4 into the tire through the tire inflation tube 1, and the driving control mechanism 3 drives the driving inflation mechanism 2 to do work to inflate the inflation tank 4 through the first air inlet 43;
when the driving control mechanism 3 receives an inflation signal, the inflation valve 42 and the check valve 11 receive the inflation signal at the same time, when the inflation valve 42 receives the inflation signal and the air storage tank meets the inflation air pressure, the inflation valve 42 is opened, when the check valve 11 receives the inflation signal and the air inlet on the outer side of the check valve 11 meets the inflation air pressure, the check valve 11 is opened, and the air in the inflation tank 4 enters the tire through the tire inflation tube 1.
When the pressure of the inflator 4 is too low and does not satisfy the inflation pressure, the inflation valve 42 is closed, and when the air inlet at the outer side of the check valve 11 does not satisfy the inflation pressure, the check valve 11 is closed, thereby preventing the tire from being leaked and over inflated.
When the pressure limiting valve 41 detects that the air pressure in the inflation tank 4 exceeds the safety air pressure, the pressure limiting valve 41 is opened to exhaust the inflation tank 4.
The pressure limiting valve 41 detects the pressure of the gas in the inflation tank 4 in real time and sends the pressure to the tire pressure controller, and when the pressure of the inflation tank 4 is too high to exceed the safe pressure, the pressure limiting valve 41 automatically opens to exhaust and reduce the pressure to the safe pressure.
An inflation tank 4 is arranged between the driving inflation mechanism 2 and the tire inflation tube 1, so that the gas supplemented by the driving inflation mechanism 2 can not directly enter the vehicle tire, and the excessive inflation of the tire under the limit condition is avoided. Compressed gas is stored in the inflation tank 4, when an inflation signal is received, the tire can be inflated in time, and the driving inflation mechanism 2 compresses to do work to continuously supplement the gas of the inflation tank 4.
In another embodiment of the present application, fig. 2 is a schematic structural diagram of a tire pressure regulating device and a tire in an embodiment of the present application. As shown in fig. 2: the inflation tank 4 is annular, is coaxially arranged on the hub and is matched with the hub in shape.
The travelling crane inflation mechanism 2 comprises a plurality of inflation cylinders 21, and the inflation cylinders 21 are arranged at equal intervals along the circumferential direction of the inflation tank 4 to form a circumferential structure coaxial with the inflation tank 4;
the travelling crane inflation mechanism 2 comprises a plurality of inflation cylinders 21, and the inflation cylinders 21 are arranged at equal intervals along the circumferential direction of the inflation tank 4 to form a circumferential structure coaxial with the inflation tank 4;
the driving control mechanism 3 can be fixed on safety tongs of a wheel hub and does not rotate along with the wheel hub, in the rotating process of the wheel, the inflation tank 4 and the inflation cylinders 21 arranged in the circumferential direction of the inflation tank 4 rotate along with the wheel hub, and the driving control mechanism 3 can act on each inflation cylinder 21 one by one to enable each inflation cylinder 21 to compress gas circularly to inflate the inflation tank 4. The cylinder push rods 217 of the plurality of inflation cylinders 21 are circularly pressed down and reset to complete the inflation of the inflation tank 4 along with the rotation of the wheels.
Because the adjacent inflation cylinders 21 are in the transition of the oblique angle of the jacking inclined surface 211, the pre-pressing jacking pin 212 is retracted without influencing the resetting of the rebound spring 213.
One end of each inflation cylinder 21 is respectively connected with the inflation tank 4, the other end of each inflation cylinder is provided with a jacking inclined surface 211, and the circumferential wall of each inflation cylinder is provided with a prepressing jacking pin 212; the top pressure inclined surface 211 is a smooth inclined surface, so that the friction and the abrasion with the roller can be reduced. The pre-pressing top pin 212 is of a spring fixed pin structure.
In the tire rotation process, the pre-pressing knock pins 212 of any two adjacent inflation cylinders 21 are in contact, so that the knock slopes 211 of the two adjacent inflation cylinders are connected to form a plane, and further, when the driving control mechanism 3 drives the travelling crane inflation mechanism 2 to do work, the driving control mechanism 3 makes a smooth transition on the knock slope 211, that is, when the roller of the telescopic rod of the driving control mechanism slides from the knock slope of one inflation cylinder to the knock slope of the other inflation cylinder, the roller does not slide through the gap between the two adjacent inflation cylinders.
The charge cylinder 21 further includes: rebound spring 213, second air inlet 214, third air inlet 215, cylinder block 216 and cylinder top rod 217.
The second intake port 214 may be an intake check valve, the third intake port 215 may be an intake check valve, the second intake port 214 is vented from the cylinder block 216 to the canister 4, and the third intake port 215 is vented from the outside air to the cylinder block 216. When the pressure of the compressed air in the cylinder block 216 is higher than the pressure in the charging tank 4, the second air inlet 214 is opened, and the third air inlet 215 is closed; when the vehicle tire rotates, the top pressure inclined surface 211 leaves the top end of the telescopic rod of the driving control mechanism 3, the cylinder ejector rod 217 returns to the original position under the action of the rebound spring 213, at the moment, the second air inlet 214 is closed, the third air inlet 215 is opened, and air is supplemented to the cylinder body 216.
The second air inlet 214 communicates with the inside of the inflator 4, and the third air inlet 215 communicates with the outside air. The pre-pressing knock pin 212 is fixed on the cylinder top rod 217.
One end of the rebound spring 213 is connected with the bottom of the cylinder body 216 of the cylinder, the other end of the rebound spring 213 is connected with the cylinder top rod 217, and the cylinder top rod 217 is connected with the top pressure inclined plane 211;
the cylinder rod 217 is installed in the cylinder block 216 to compress air in the cylinder block 216 so that the air is introduced into the charge tank 4 through the second air inlet 214.
When the driving control mechanism 3 receives an inflation signal, the driving control mechanism 3 acts on the top pressure inclined surface 211, so that the cylinder top rod 217 compresses the gas in the cylinder body 216, and the inflation tank 4 is inflated through the second air inlet 214;
when the drive control mechanism 3 leaves the top pressure slope 211, the rebound spring 213 is reset to inflate the cylinder block 216 through the third intake port 215.
The variable exhaust pressure limiting valve 5 for adjusting the tire pressure system is arranged on the inner side of a vehicle tire, is internally provided with an independent battery and a single chip microcomputer, and is communicated with a tire pressure controller through a Bluetooth signal. The variable exhaust pressure limiting valve 5 can detect the air pressure in the tire in real time, and when the air pressure in the tire is greater than the highest safe pressure limiting value, the variable exhaust pressure limiting valve 5 is opened to exhaust the tire, so that the tire pressure is reduced to a safe range, and the risk of tire burst caused by excessive rise of the tire pressure in summer midday exposure is reduced.
Fig. 3 is a schematic structural diagram of a tire pressure regulating system according to an embodiment of the present application. The rain light sensor, the driving mode sensor, the road surface identification camera, the wheel speed sensor, the infrared temperature sensor, the tire temperature sensor and the external temperature sensor of the vehicle detect information in real time and send the information to the tire pressure controller.
The tire pressure monitoring system includes: a tire pressure monitoring receiver and a tire pressure monitoring sensor;
the tire pressure controller is respectively connected with the sensing system, the tire pressure monitoring system, the tire pressure regulating device and the variable exhaust pressure limiting valve, and is used for receiving signals sent by the sensing system and the tire pressure monitoring system and executing steps in the method for regulating the tire pressure provided by the embodiment of the application according to the signals.
The signals transmitted by the sensing system and the tire pressure monitoring system comprise: the system comprises a luminous flux signal, a road condition image, a first temperature signal, wheel rotating speed and the like which are sent by a sensing system; and the current tire pressure transmitted by the tire pressure monitoring system.
Specifically, a method for regulating tire pressure according to real-time detection information transmitted by a sensing system is shown in fig. 4, and fig. 4 is a flow chart of steps of the method for regulating tire pressure according to the embodiment of the present application.
Step S41: when the vehicle is in a running state, receiving weather parameters, road condition parameters, vehicle running speed and current tire pressure of the vehicle;
in the embodiment of the application, the weather parameters are obtained through the information sent by the rainfall light sensor, the road surface identification camera and the external temperature sensor in the sensing system.
Receiving a luminous flux signal sent by a rainfall light sensor, a road condition image sent by a road surface identification camera and a first temperature signal sent by an external temperature sensor; identifying and obtaining the weather parameters in a database according to the luminous flux signal, the road condition image and the first temperature signal;
the weather parameter may be an identification representing various weather conditions, such as A1-medium rain, A2-light rain, A3-medium snow, A4-heavy snow, and the like.
The first temperature signal is an air temperature outside the vehicle. The database can store a plurality of weather parameters, and luminous flux signals, road condition images and outdoor temperature values corresponding to the weather parameters in advance. The weather parameters in the database may be stored in the form of key value pairs, or in the form of a table, for example, < medium rain weather-luminous flux 59% -road condition image 1-outdoor temperature 16 >.
The rainfall light sensor can be arranged at the position of a vehicle windshield, and a luminous flux signal can be obtained according to the reflection amount of the vehicle windshield to infrared light through an infrared light technology and can reflect the light transmittance of the windshield. Generally, in rainy and snowy weather, the light transmittance of the windshield is low, and in sunny weather, the light transmittance of the windshield is high. The light flux signal of the rainfall light sensor is used as one of factors for determining weather parameters, so that the accuracy of identifying the weather of rain and snow can be improved, and the tire pressure obtained through calculation is ensured to be suitable for running on the road surface with accumulated rain and snow.
The road surface identification camera shooting can be arranged outside the vehicle, and can acquire road condition images in real time, identify the road condition images and determine whether snow or accumulated water exists on the road surface. The recognition mode can use a neural network classification method to extract features of the road condition image and calculate possible road conditions (accumulated water, accumulated snow or dryness).
The external temperature sensor detects the external temperature of the vehicle in real time and optimizes the final weather parameters. For example, assuming that the temperature obtained by the temperature sensor outside the vehicle is 28 degrees, the real-time weather is unlikely to be snowing, and the final weather parameter may be other factors causing the road surface to be smooth, so that the accuracy of weather identification is improved.
According to the embodiment of the application, road condition parameters are obtained through a road surface identification camera and a driving mode sensor in a sensing system.
Identifying and obtaining the road condition parameters in the database according to the road condition image; when the road condition parameters matched with the road condition image cannot be obtained in the database, obtaining the current driving mode sent by the driving mode sensor; and selecting the road condition parameters according to the current driving mode.
The road condition parameter may be an indication of various road conditions, such as B1-cobblestone pavement, B2-gravel pavement, B3-asphalt pavement, etc.
The driving mode may refer to an economy mode or a sport mode selected by the user.
When the database does not have the road condition parameters corresponding to the road condition images, the current road condition parameters can be judged according to the driving mode, for example, when the driving mode is the motion mode, the current road condition parameters are rough roads such as cobblestone roads with small probability, and are asphalt roads with large probability. The current road surface condition is obtained as much as possible, and the tire pressure controller is supported to calculate the optimal tire pressure which is most suitable for the objective conditions (weather condition, road surface condition and the like) of the current vehicle running.
The road condition image can reflect the accumulated snow and water conditions of the road surface and can also reflect the roughness of the road surface. Through the road condition image, the road surface on which the vehicle can be identified to run is a cement road surface, a cobblestone road surface or a muddy road surface. The specific recognition image can be obtained by a machine learning method, a large amount of road condition image training sets are collected firstly, and the classification model is trained, wherein the training method is not limited in the application.
In the embodiment of the application, the running speed of the vehicle is obtained through a wheel speed sensor and a Beidou positioning system in a sensing system. The wheel rotating speed sent by the wheel speed sensor is received, the wheel rotating speed is corrected by using a Beidou positioning system, the vehicle running speed is obtained, and the accuracy of the obtained vehicle running speed is ensured.
Step S42: calculating the optimal tire pressure of the vehicle according to the weather parameters, the road condition parameters and the vehicle running speed;
and receiving the current tire pressure transmitted by the tire pressure monitoring receiver. The tire pressure monitoring receiver is located the tire pressure monitoring system, connects the tire pressure monitoring sensor, and the tire pressure monitoring sensor real-time detection tire pressure is forwarded to the tire pressure controller through the tire pressure monitoring receiver.
Calculating the optimal tire pressure for the vehicle may employ data that is compared to the tire pressure data in the database.
The database can pre-store the optimal value of the tire pressure under different weather parameters, road condition parameters and vehicle running speeds.
Step S43: according to the size relationship between the optimal tire pressure and the current tire pressure, issuing a control instruction to a tire pressure adjusting device or a variable exhaust pressure limiting valve arranged on a tire of the vehicle so as to adjust the tire pressure of the vehicle to be matched with the optimal tire pressure through the tire pressure adjusting device or the variable exhaust pressure limiting valve; the tire pressure adjusting device is the tire pressure adjusting device mentioned in the embodiments of the present application.
Matching the optimum tire air pressure may mean that the tire air pressure is adjusted to be greater than C1 and less than C2 when the optimum tire air pressure calculated by the tire pressure controller is in the numerical range < C1-C2>, and C1 and C2 are arbitrary natural numbers. And when the optimal tire pressure calculated by the tire pressure controller is a fixed value, adjusting the tire pressure of the tire to be equal to the fixed value.
When the optimal tire pressure is larger than the current tire pressure, sending an inflation signal to a tire pressure regulating device, and controlling the tire pressure regulating device to inflate the wheel tire; and when the optimal tire pressure is smaller than the current tire pressure, sending an exhaust signal to a tire pressure regulating device, and controlling the tire pressure regulating device to exhaust the tire of the wheel.
In another embodiment of the application, the speed of the vehicle can be predicted according to the traffic condition of the planned path, and the optimal tire pressure is optimized. Acquiring real-time traffic road conditions, and predicting a preset driving speed of a vehicle driving according to a planned path; calculating the optimal tire pressure of the vehicle according to the weather parameters, the road condition parameters and the vehicle running speed, wherein the optimal tire pressure of the vehicle comprises the following steps: and calculating the optimal tire pressure of the vehicle according to the weather parameters, the road condition parameters, the vehicle running speed and the preset running speed.
The user can obtain a planned path by inputting a destination at the mobile terminal and combining the navigation system to obtain the traffic condition of the planned path, when the traffic jam occurs, the future vehicle speed of the vehicle is slow, the current optimal tire pressure is assumed to be low, but the low tire pressure is not suitable for low-speed running and can cause the abrasion of the tire, the optimal tire pressure is optimized through the tire pressure controller, the optimal tire pressure with the high tire pressure value is obtained, and the method is more suitable for the vehicle running of the whole planned path.
In another embodiment of the present application, the optimal tire pressure may also be optimized according to the road surface temperature and the tire temperature.
Obtaining a second temperature signal sent by an infrared temperature sensor and a third temperature signal sent by a tire temperature sensor; calculating the optimal tire pressure of the vehicle according to the weather parameters, the road condition parameters and the vehicle running speed, wherein the optimal tire pressure of the vehicle comprises the following steps: and calculating the optimal tire pressure of the vehicle according to the weather parameter, the road condition parameter, the vehicle running speed, the second temperature signal and the third temperature signal.
The infrared temperature sensor detects the temperature of the road surface, the tire temperature sensor monitors the temperature of the tire in real time, and two temperature signals are transmitted to the tire pressure controller, so that the tire pressure controller comprehensively considers the influence of the temperature on the tire pressure of the tire.
According to the embodiment of the application, the tire pressure controller is respectively connected with the sensing system, the tire pressure monitoring system, the variable exhaust pressure limiting valve, the tire pressure controller and the tire pressure adjusting device, and weather parameters in the vehicle running process are calculated according to real-time detection information sent by a rainfall light sensor, a road surface identification camera and an external temperature sensor in the sensing system; calculating road condition parameters in the driving process of the vehicle according to real-time detection information sent by a road surface identification camera and a driving mode sensor in a sensing system; calculating to obtain the running speed of the vehicle according to real-time detection information sent by a wheel speed sensor in a sensing system and a Beidou positioning system; and calculating to obtain the optimal tire pressure suitable for the current driving condition of the vehicle by combining the weather parameters, the road condition parameters and the vehicle driving speed. Meanwhile, the tire pressure controller receives the current tire pressure sent by the tire pressure monitoring system, and when the optimal tire pressure is greater than the current tire pressure, the tire pressure controller sends an exhaust signal to the variable exhaust pressure limiting valve to control the variable exhaust pressure limiting valve to exhaust the vehicle tire so as to reduce the tire pressure to the optimal tire pressure; when the optimal tire pressure is smaller than the current tire pressure, the tire pressure controller sends inflation signals to a driving control mechanism, an inflation valve and a one-way valve of the tire pressure adjusting device, controls the extension of a telescopic rod of the driving control mechanism, acts on a driving inflation mechanism, enables the driving inflation mechanism to work, and supplements compressed gas stored in an inflation tank; the inflation valve and the check valve are opened, compressed gas in the inflation tank enters the vehicle tire, the vehicle tire is rapidly inflated, and then the tire pressure of the vehicle tire is dynamically adjusted according to the objective condition of vehicle running in the vehicle running process, so that the tire pressure of the vehicle tire is kept at the optimal value of the most appropriate current temperature, road condition, weather and vehicle speed, and the vehicle running safety and the vehicle running economy are further ensured.
The tire pressure controller for regulating a tire pressure system may also integrate a plurality of modules for performing the methods proposed by the embodiments of the present application. Specifically, the following modules may be included:
the receiving module is used for receiving weather parameters, road condition parameters, vehicle running speed and current tire pressure of the vehicle when the vehicle is in a running state;
the calculation module is used for calculating the optimal tire pressure of the vehicle according to the weather parameters, the road condition parameters and the vehicle running speed;
the adjusting module is used for issuing a control instruction to an adjusting tire pressure device or a variable exhaust pressure limiting valve arranged on a tire of the vehicle according to the size relation between the optimal tire pressure and the current tire pressure so as to adjust the tire pressure of the vehicle to be matched with the optimal tire pressure through the adjusting tire pressure device or the variable exhaust pressure limiting valve; the tire pressure adjusting device is the tire pressure adjusting device provided by the embodiment of the application.
Optionally, the obtaining module includes:
the first receiving submodule is used for receiving a luminous flux signal sent by the rainfall light sensor, a road condition image sent by the road surface identification camera and a first temperature signal sent by the temperature sensor outside the vehicle;
the first identification submodule is used for identifying and obtaining the weather parameters in a database according to the luminous flux signal, the road condition image and the first temperature signal;
the second identification submodule is used for identifying and obtaining the road condition parameters in the database according to the road condition image;
the correction module is used for receiving the wheel rotating speed sent by the wheel speed sensor, correcting the wheel rotating speed by using a Beidou positioning system and obtaining the vehicle running speed;
and the second receiving submodule is used for receiving the current tire pressure sent by the tire pressure monitoring receiver.
Optionally, the second identification submodule includes:
an obtaining subunit, configured to obtain a current driving mode sent by the driving mode sensor when a road condition parameter matching the road condition image cannot be obtained in the database;
and the selecting subunit is used for selecting the road condition parameters according to the current driving mode.
The adjustment module includes:
the inflation submodule is used for enabling the control instruction to control the tire pressure adjusting device to inflate the wheel tire when the optimal tire pressure is larger than the current tire pressure;
and the exhaust submodule is used for enabling the control instruction to control the tire pressure regulating device to exhaust the wheel tire when the optimal tire pressure is smaller than the current tire pressure.
Based on the same inventive concept, another embodiment of the present application provides a vehicle provided with the tire pressure regulating system proposed in the embodiment of the present application.
The embodiments in the present specification are described in a progressive or descriptive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one of skill in the art, embodiments of the present application may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus, and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the true scope of the embodiments of the application.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The device, the method, the system and the vehicle for regulating tire pressure provided by the application are described in detail, and the description of the embodiment is only used for helping to understand the method and the core idea of the application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A tire pressure regulating device, the tire pressure regulating device being mounted on a hub of a vehicle, the tire pressure regulating device comprising:
the device comprises a tire inflation tube, a travelling crane inflation mechanism and a drive control mechanism;
the air outlet end of the tire inflation tube is connected with the inner side of a tire of the vehicle through a one-way valve, and the air inlet end of the tire inflation tube is connected with the driving inflation mechanism;
when the drive control mechanism receives an inflation signal, the one-way valve is opened, and the drive control mechanism drives the travelling crane inflation mechanism to do work so as to inflate the tire through the tire inflation tube.
2. The tire pressure regulating device of claim 1, wherein an inflator is further provided between the tire inflation tube and the vehicle inflation mechanism;
the inflation tank is provided with a pressure limiting valve, an inflation valve and a first air inlet;
the inflation valve is connected with the air inlet end of the tire inflation tube, and the first air inlet is connected with the travelling crane inflation mechanism;
when the driving control mechanism receives an inflation signal, the inflation valve and the one-way valve are opened so as to input the gas stored in the inflation tank into the tire through the tire inflation pipe, and the driving control mechanism drives the travelling crane inflation mechanism to do work so as to inflate the inflation tank through the first air inlet;
and when the pressure limiting valve detects that the air pressure in the inflation tank exceeds the safe air pressure, the pressure limiting valve is opened to exhaust the inflation tank.
3. The service inflator of claim 2, wherein the inflator is annular, is coaxially mounted on the hub, and is shaped to match the hub;
the travelling crane inflation mechanism comprises a plurality of inflation cylinders which are arranged at equal intervals along the circumferential direction of the inflation tank to form a circumferential structure coaxial with the inflation tank;
one end of each inflation cylinder is connected with the inflation tank, the other end of each inflation cylinder is provided with a jacking inclined plane, and a prepressing jacking pin is arranged on the circumferential wall of each inflation cylinder;
in the rotation process of the tire, the prepressing ejector pins of any two adjacent inflation cylinders are in contact, so that the ejection inclined planes of the two inflation cylinders are connected into a plane, and the driving control mechanism is in smooth transition on the ejection inclined planes when driving the travelling crane inflation mechanism to do work.
4. A service charging device as recited in claim 3, wherein said charging cylinder further comprises: the cylinder comprises a rebound spring, a second air inlet, a third air inlet, a cylinder body and a cylinder ejector rod;
one end of the rebound spring is connected with the bottom of the cylinder body of the air cylinder, the other end of the rebound spring is connected with the air cylinder ejector rod, and the air cylinder ejector rod is connected with the jacking inclined plane;
when the driving control mechanism receives an inflation signal, the driving control mechanism acts on the jacking inclined plane to enable the cylinder ejector rod to compress gas in the cylinder body of the cylinder and inflate the inflation tank through the second air inlet;
when the driving control mechanism leaves the jacking inclined surface, the rebound spring is reset so as to inflate the cylinder body through the third air inlet.
5. A method of regulating tire pressure, the method comprising:
when the vehicle is in a running state, receiving weather parameters, road condition parameters, vehicle running speed and current tire pressure of the vehicle;
calculating the optimal tire pressure of the vehicle according to the weather parameters, the road condition parameters and the vehicle running speed;
according to the size relationship between the optimal tire pressure and the current tire pressure, issuing a control instruction to a tire pressure adjusting device or a variable exhaust pressure limiting valve arranged on a tire of the vehicle so as to adjust the tire pressure of the vehicle to be matched with the optimal tire pressure through the tire pressure adjusting device or the variable exhaust pressure limiting valve; wherein the tire pressure regulating device is the tire pressure regulating device of any one of claims 1 to 4.
6. The method of claim 5, wherein receiving the weather parameter, the road condition parameter, the vehicle driving speed, and the current tire pressure of the vehicle while the vehicle is in a driving state comprises:
receiving a luminous flux signal sent by a rainfall light sensor, a road condition image sent by a road surface identification camera and a first temperature signal sent by an external temperature sensor;
identifying and obtaining the weather parameters in a database according to the luminous flux signal, the road condition image and the first temperature signal;
identifying and obtaining the road condition parameters in the database according to the road condition image;
receiving the wheel rotating speed sent by a wheel speed sensor, and correcting the wheel rotating speed by using a Beidou positioning system to obtain the vehicle running speed;
and receiving the current tire pressure transmitted by the tire pressure monitoring receiver.
7. The method as claimed in claim 6, wherein identifying the road condition parameters in the database according to the road condition image comprises:
when the road condition parameters matched with the road condition image cannot be obtained in the database, obtaining the current driving mode sent by the driving mode sensor;
and selecting the road condition parameters according to the current driving mode.
8. The method according to claim 5, wherein issuing a control command to a variable exhaust pressure limiting valve that adjusts a tire pressure device or is mounted on a tire of the vehicle to adjust the tire pressure of the vehicle to match the optimal tire pressure through the tire pressure adjusting device or the variable exhaust pressure limiting valve according to a magnitude relationship between the optimal tire pressure and the current tire pressure comprises:
when the optimal tire pressure is larger than the current tire pressure, the control instruction is to control the tire pressure regulating device to inflate the wheel tire;
and when the optimal tire pressure is smaller than the current tire pressure, the control instruction is to control the tire pressure regulating device to exhaust the tire of the wheel.
9. A regulated tire pressure system, comprising: the system comprises a sensing system, a tire pressure monitoring system, a tire pressure controller, a tire pressure regulating device and a variable exhaust pressure limiting valve arranged on a tire of the vehicle; wherein the tire pressure regulating device is the tire pressure regulating device of any one of claims 1 to 4;
the sensing system includes: the system comprises a rainfall light sensor, a driving mode sensor, a road surface identification camera, a wheel speed sensor, an infrared temperature sensor, a tire temperature sensor and an outside vehicle temperature sensor;
the tire pressure monitoring system includes: a tire pressure monitoring receiver and a tire pressure monitoring sensor;
the tire pressure controller is respectively connected with the sensing system, the tire pressure monitoring system, the tire pressure regulating device and the variable exhaust pressure limiting valve, and is used for receiving signals sent by the sensing system and the tire pressure monitoring system and executing the steps in the method for regulating tire pressure according to any one of claims 5 to 8 according to the signals.
10. A vehicle, characterized in that the vehicle is provided with a regulated tire pressure system according to claim 9.
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| CN202011205436.6A CN112440631B (en) | 2020-11-02 | 2020-11-02 | Tire pressure adjusting device, method and system and vehicle |
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| CN202011205436.6A CN112440631B (en) | 2020-11-02 | 2020-11-02 | Tire pressure adjusting device, method and system and vehicle |
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| CN112440631B (en) | 2022-09-13 |
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