CN112477529A - Tire pressure compensation device, method and system - Google Patents
Tire pressure compensation device, method and system Download PDFInfo
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- CN112477529A CN112477529A CN202011377959.9A CN202011377959A CN112477529A CN 112477529 A CN112477529 A CN 112477529A CN 202011377959 A CN202011377959 A CN 202011377959A CN 112477529 A CN112477529 A CN 112477529A
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- 230000001133 acceleration Effects 0.000 claims description 39
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- 239000013589 supplement Substances 0.000 claims description 9
- 239000000446 fuel Substances 0.000 abstract description 7
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
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- 208000012661 Dyskinesia Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
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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
- B60C23/10—Arrangement of tyre-inflating pumps mounted on vehicles
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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
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
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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
- B60C23/20—Devices for measuring or signalling tyre temperature only
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
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Abstract
The invention provides a tire pressure compensation device, which comprises a cylinder, a first vent pipe, a second vent pipe, a piston, a first valve, a second valve, a third valve and a driving assembly, wherein the cylinder is arranged on the cylinder; the first vent pipe is used for communicating the cylinder with a vehicle tire valve; the second breather pipe is used for connecting the cylinder and the first breather pipe; the piston is at least partially arranged in the cylinder; the first valve is arranged on the second vent pipe; the second valve is arranged on the cylinder and is used for communicating the cylinder with the atmosphere; the third valve is arranged on the first vent pipe; the driving assembly is used for controlling the piston to move and is also used for controlling the opening and closing of the first valve, the second valve and the third valve; the invention can monitor the tire pressure of each tire in real time, compensate the tire pressure of the tire when the tire pressure is monitored improperly, ensure that the tire pressure of the tire is in a good range, is favorable for improving the fuel economy of the whole vehicle and the driving comfort, can prolong the service life of the tire and improve the user experience.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a tire pressure compensation device, method and system.
Background
With the rapid development of economy in recent years, the automobile industry in China develops rapidly, and the automobile demand is expected to be increased in a long period of time in the future. However, the problems of energy shortage and environmental pollution caused by the energy shortage are more and more prominent, and the regulations on oil consumption and emission are tightened year by year, which provides greater challenges for the oil saving work of the whole vehicle.
In the prior art, in order to achieve the purpose of energy conservation and emission reduction, an engine, a clutch, a tail gas exhaust pipe and the like are generally improved, for example: the ignition angle and the torque output of the engine are refined, the tail gas purification efficiency is improved, and the like, and the influence of the tire pressure on the oil consumption of the whole vehicle is usually ignored. When the pressure of the tire is too small, the contact area between the tire and the ground is increased, the running resistance is increased, and then the fuel consumption of the vehicle is naturally increased, so that the fuel economy of the whole vehicle is reduced. When the pressure of the tire is too high, the contact area between the tire and the ground is reduced, the resistance between the tire and the ground is reduced, but the pressure born by the unit area of the tire is increased, and the abrasion of the tire is also possibly intensified; when the vehicle runs to a protrusion (such as a deceleration strip) or a depression, the bounce of the vehicle is increased, the driving experience of drivers and passengers is reduced, and meanwhile, the damage to a vehicle suspension system is easily caused; in addition, the brake is easy to be out of control, and the driving safety is affected.
Therefore, it is important whether the tire pressure is appropriate. However, in the prior art, when the pressure of the tire of the vehicle is insufficient or even the tire leaks quickly, a driver often cannot find a service point or a maintenance station to maintain or replace the tire in time, which brings inconvenience to the use of the vehicle.
Aiming at the defects in the prior art, the application aims to provide a tire pressure compensation device, a tire pressure compensation method and a tire pressure compensation system, which can monitor the tire pressure of a tire in real time, adjust the tire pressure of the tire to a proper range according to the actual running working condition of a vehicle, take the running smoothness and driving comfort of the whole vehicle into consideration, realize energy conservation and emission reduction, improve the fuel economy of the whole vehicle and improve the driving safety.
Disclosure of Invention
In view of the above problems in the prior art, an object of the present invention is to provide a tire pressure compensating device, which includes a cylinder, a first vent pipe, a second vent pipe, a piston, a first valve, a second valve, a third valve, and a driving assembly;
one end of the first vent pipe is communicated with the cylinder, and the other end of the first vent pipe is communicated with a vehicle tire valve;
the second breather pipe is used for connecting the cylinder and the first breather pipe;
the piston is at least partially disposed within the cylinder;
the first valve is arranged on the second vent pipe;
the second valve is arranged on the cylinder and is used for communicating the cylinder with the atmosphere;
the third valve is arranged on the first vent pipe and is used for communicating the first vent pipe with vehicle tires;
the driving assembly is used for driving the piston to move, and the driving assembly is also used for driving the first valve, the second valve and the third valve to be opened and closed.
Further, the piston comprises a first piston, a second piston and a piston rod, the first piston is arranged in the cylinder, the second piston is arranged in the first vent pipe, and the first piston and the second piston are connected through the piston rod.
Specifically, the second breather pipe comprises a first port and a second port, the first port is used for being communicated with the cylinder, and the second port is used for being connected with the first breather pipe;
the distance between the second port and the cylinder is larger than the stroke of the second piston;
the distance between the first port and the second vent pipe is greater than the stroke of the first piston.
Specifically, the device further comprises a first limiting structure and a second limiting structure;
the first limiting structure is arranged on one side, close to the first vent pipe, of the first port, and the first limiting structure is used for limiting the stroke of the first piston;
the second limiting structure is arranged on one side, close to the cylinder, of the second port, and the second limiting structure is used for limiting the stroke of the second piston.
In another aspect, the present invention provides a tire pressure compensation method, which is based on the above technical solution, and the method includes:
acquiring the running condition of a vehicle, the real-time tire pressure of each tire of the vehicle and the real-time temperature of each tire of the vehicle;
acquiring ideal tire pressure values corresponding to the tires according to the positions of the wheels, the running conditions of the vehicle and the real-time temperature of each tire of the vehicle;
comparing the real-time tire pressure of each tire of the vehicle with the corresponding tire pressure ideal value;
when the real-time tire pressure is smaller than the tire pressure ideal value corresponding to the real-time tire pressure, controlling the tire pressure compensation device to supplement air to the tire;
and when the real-time tire pressure is greater than the tire pressure ideal value corresponding to the real-time tire pressure, controlling the tire pressure compensation device to enable the tire to release pressure and exhaust.
Preferably, before obtaining the tire pressure ideal value corresponding to each tire according to the wheel position, the vehicle operating condition and the tire real-time temperature of each wheel of the vehicle, the method further includes:
acquiring the real-time change rate of the tire pressure of each tire of the vehicle;
comparing the real-time change rate with a preset tire pressure change rate threshold value;
and when the real-time change rate of the tire pressure is greater than or equal to the tire pressure change rate threshold value, sending reminding information.
Specifically, the control the tire pressure compensation device supplements air to the tire, and includes:
calculating a first stroke of the piston according to the real-time tire pressure and the tire pressure ideal value;
controlling the first valve and the second valve to close, controlling the third valve to open, and controlling the piston to move from the initial position to the direction close to the third valve;
when the piston stroke reaches the first stroke, controlling the closing of a third valve;
controlling the first valve and the second valve to be opened so that the piston returns to the initial position;
when the piston returns to the initial position, the first valve and the second valve are controlled to be closed.
Specifically, the controlling the tire pressure compensating device to release pressure and exhaust air of the tire comprises the following steps:
calculating a second stroke of the piston according to the real-time tire pressure and the tire pressure ideal value;
controlling the third valve to open, and the tire releases pressure and exhausts air and pushes the piston to move from the initial position to the direction far away from the third valve;
when the piston stroke reaches the second stroke, controlling a third valve to close;
controlling the first valve and the second valve to be opened so that the piston returns to the initial position;
when the piston returns to the initial position, the first valve and the second valve are controlled to be closed.
Further, the vehicle running condition is obtained through the following steps of:
acquiring vehicle running speed and vehicle running acceleration, wherein the vehicle running acceleration comprises forward acceleration, transverse acceleration and vertical acceleration;
and acquiring the running condition of the vehicle according to the running speed, the forward acceleration, the transverse acceleration and the vertical acceleration of the vehicle.
Another aspect of the present invention is directed to a tire pressure compensating system for controlling a tire pressure compensating device according to the above technical solution, including:
the first acquisition module is used for acquiring the running condition of the vehicle, the real-time tire pressure of each tire of the vehicle and the real-time temperature of each tire of the vehicle;
the second acquisition module is used for acquiring the tire pressure ideal value corresponding to each tire according to the wheel position, the vehicle running condition and the real-time temperature of each tire of the vehicle;
the first comparison module is used for comparing the real-time tire pressure of each tire of the vehicle with the tire pressure ideal value corresponding to the real-time tire pressure;
the first control module is used for controlling the tire pressure compensation device to supplement air to the tire when the real-time tire pressure is smaller than the tire pressure ideal value corresponding to the real-time tire pressure;
and the second control module is used for controlling the tire pressure compensation device to enable the tire to release pressure and exhaust when the real-time tire pressure is greater than the tire pressure ideal value corresponding to the real-time tire pressure.
Due to the technical scheme, the invention has the following beneficial effects:
1) the tire pressure compensation device, the method and the system can monitor the tire pressure, and when the monitored tire pressure is not suitable for the current driving working condition, the real-time tire pressure of the tire is compensated by the calculated tire pressure ideal value, so that the tire pressure of the tire is in a good numerical range, the fuel economy of the whole vehicle is improved, the smoothness and the comfort of driving are improved, the service life of the tire can be prolonged, and the user experience is improved.
2) The tire pressure compensation device, the tire pressure compensation method and the tire pressure compensation system can timely perform air compensation operation on tires, and solve the problem that a vehicle cannot be timely transported to a maintenance station for maintenance or replacement in the prior art; the air leakage operation can be performed on the tire with the overhigh tire pressure, so that the problem of inaccurate tire pressure caused by manual pressure relief in the prior art is solved; thereby avoiding the danger caused by the driving on the road under the condition of improper tire pressure.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram of a tire pressure compensating device according to an embodiment of the present invention;
FIG. 2 is a schematic view of the tire pressure compensating device during tire inflation;
FIG. 3 is a schematic diagram of the tire pressure compensating device during pressure relief and air exhaust of a tire;
FIG. 4 is a schematic structural diagram of a vehicle according to an embodiment of the present invention;
fig. 5 is a flowchart of a tire pressure compensation method according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a tire pressure compensating system according to an embodiment of the present invention.
In the figure: 10-cylinder, 20-first vent pipe, 30-second vent pipe, 40-piston, 41-first piston, 42-second piston, 43-piston rod, 50-first valve, 60-second valve, 70-third valve, 81-first pressure sensor, 82-second pressure sensor, 83-temperature sensor, 90-tire.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
Example 1
Referring to fig. 1 to 6, the present embodiment provides a tire pressure compensating device including a cylinder 10, a first vent pipe 20, a second vent pipe 30, a piston 40, a first valve 50, a second valve 60, a third valve 70, and a driving assembly;
one end of the first vent pipe 20 is used for being communicated with the cylinder 10, and the other end of the first vent pipe 20 is used for being communicated with a vehicle tire valve;
the second breather pipe 30 is used for connecting the cylinder 10 and the first breather pipe 20;
the piston 40 is at least partially disposed within the cylinder 10;
the first valve 50 is disposed on the second vent pipe 30; the second valve 60 is arranged on the cylinder 10, and the second valve 60 is used for communicating the cylinder 10 with the atmosphere; the third valve 70 is disposed on the first breather pipe 20, and the third valve 70 is used for communicating the first breather pipe 20 with vehicle tires;
the driving assembly is used for driving the movement of the piston, and the driving assembly is also used for driving the opening and closing of the first valve 50, the second valve 60 and the third valve 70.
Embodiments of the present disclosure provide a tire pressure compensating device, wherein a driving assembly is capable of driving movement of a piston under the control of a tire pressure compensating system, and driving opening and closing of a first valve, a second valve and a third valve under the control of the tire pressure compensating system.
Specifically, when the tire pressure is detected to be insufficient, the third valve is driven to open, and the piston is driven to move towards the direction close to the third valve, so that the gas in the first vent pipe 20 is supplemented into the tire;
and when the tire pressure of the tire is high, the third valve is driven to be opened, the surplus gas in the tire is released, the gas pushes the piston to move towards the direction far away from the third valve, and when the piston moves to a proper position, the driving assembly drives the third valve to be closed so as to ensure that the tire pressure in the tire is proper.
After the air supply work or the pressure relief and exhaust work is completed, the driving assembly controls the first valve and the second valve to be opened again, so that the air pressures on the two sides of the piston are consistent, the piston returns to the initial position, and finally the first valve and the second valve are controlled to be closed to prepare for the next air supply and exhaust work.
It should be noted that the driving assembly may be a driving module integrated into a whole, or may be a plurality of driving mechanisms distributed, for example: the driving mechanism is used for driving the piston to move, the first driving mechanism is used for driving the first valve to open or close, the second driving mechanism is used for driving the second valve to open or close, and the third driving mechanism is used for driving the third valve to open or close.
Therefore, the tire pressure compensation device provided by the embodiment of the specification can timely perform air repair and release operations on the tire, so that the tire pressure of the tire is in a proper air pressure range, the tire and the ground have a proper contact area, and the phenomenon that the fuel economy of the whole vehicle is influenced by overlarge friction or the bouncing sense of vibration caused by undersize friction is obvious is avoided.
The piston includes a first piston 41, a second piston 42 and a piston rod 43, the first piston 41 is disposed in the cylinder 10, the second piston 42 is disposed in the first vent pipe 20, and the first piston 41 and the second piston 42 are connected by the piston rod 43. I.e. the second piston is located outside the cylinder 10.
It should be noted that the size of the first piston is matched with the inner diameter of the cylinder 10, the first piston abuts against the inner wall of the cylinder 10, and the first piston 10 reciprocates along the axial direction of the cylinder 10;
the size of the second piston is matched with the inner diameter of the first vent pipe 20, the second piston is abutted against the inner wall of the second vent pipe 20, and the second piston reciprocates along the axial direction of the second vent pipe 20.
It should be noted that in the embodiment of the present disclosure, the inner diameter of the cylinder 10 is larger than the inner diameter of the first vent pipe 20, that is, the sectional area of the first vent pipe 20 is smaller, so that the volume of gas required by the inflation operation can be accurately quantified through the travel of the second piston along the first vent pipe 20, and thus the piston is finely controlled when the piston is controlled to move. And the cross-sectional area of the cylinder 10 is larger to facilitate the application of force at the first piston to drive the piston to move. The moving stroke of the piston is similar to the pressure relief operation.
In the embodiment of the present disclosure, the first piston 41, the second piston 42 and the piston rod 43 may be integrally formed, or may be integrally formed by assembling, and the first piston and the second piston can move synchronously under the driving of the driving assembly.
The second breather pipe 30 includes a first port for communicating with the cylinder 10 and a second port for connecting with the first breather pipe 20;
the distance between the second port and the cylinder 10 is greater than the stroke of the second piston 42; the distance between the first port and the second vent pipe 20 is greater than the stroke of the first piston 41. The first port and the second port are arranged at positions such that the piston does not hinder the recovery of air pressure on both sides of the piston after moving corresponding strokes.
The tire pressure compensation device further comprises a first limiting structure and a second limiting structure; the first limit structure is arranged at one side of the first port close to the first breather pipe 20, and the first limit structure is used for limiting the stroke of the first piston 41; the second limit structure is arranged at one side of the second port close to the cylinder 10, and the second limit structure is used for limiting the stroke of the second piston.
Specifically, in the embodiment of the present specification, the first limit structure may be an annular or block-shaped protrusion disposed on the inner wall of the cylinder 10, and the first limit structure enables the first piston not to excessively move toward the direction close to the second valve 60, so as to avoid the first piston blocking the first port of the second vent pipe 30; and because the inner diameter of the cylinder 10 is larger than the inner diameter of the first vent pipe 10, that is, the size of the first piston 41 is larger than the size of the second piston 42, limiting the stroke of the first piston 41 is also beneficial to avoiding the second piston 42 from separating from the first vent pipe 20, avoiding piston movement failure, and ensuring the reliability of the tire pressure compensating device.
The second limit structure is similar to the first limit structure, and the second limit structure can prevent the second piston from excessively moving towards the direction close to the third valve, so that the first piston is prevented from excessively extruding the first vent pipe or extending into the first vent pipe 20 to damage the first vent pipe 20.
Preferably, the tire pressure compensating device is further provided with a first pressure sensor disposed on a side of the second piston 42 remote from the first piston, the first pressure sensor being configured to detect the air pressure in the first vent pipe 20 from the second piston to the third valve section.
As shown in fig. 4, an embodiment of the present disclosure further provides a vehicle, which includes a tire 90 and the tire pressure compensating device provided in the foregoing technical solution, where an air valve is disposed on the tire 90, and the tire 90 and the tire pressure compensating device are connected to the first air pipe 20 through the air valve. The tire 90 is internally provided with a second pressure sensor 82 and a temperature sensor 83, the second pressure sensor 82 is used for detecting the real-time tire pressure of the tire, the temperature sensor 83 is used for detecting the real-time temperature of the tire, and the second pressure sensor 82 and the temperature sensor 83 are electrically connected with a tire pressure compensation system.
The second pressure sensor 82 and the temperature sensor 83 are respectively configured to transmit the acquired real-time tire pressure information and real-time temperature information of each tire to the tire pressure compensation system, so that the tire pressure compensation system can process the real-time tire pressure information of each tire according to the real-time temperature information of each tire and the real-time tire pressure information of each tire (and in combination with the vehicle operation condition) and then output a control signal to control the driving assembly to control the piston, the first valve, the second valve, and the third valve.
An embodiment of the present specification further provides a tire pressure compensation method, where the tire pressure compensation device provided by the method based on the above technical solution includes the following steps:
s100: and acquiring the running condition of the vehicle, the real-time tire pressure of each tire of the vehicle and the real-time temperature of each tire of the vehicle.
The vehicle running condition is obtained according to the vehicle running speed and the vehicle running acceleration, the vehicle running speed is obtained through a speed sensor, the vehicle running acceleration is obtained through an acceleration sensor, and the vehicle running acceleration comprises the forward acceleration, the transverse acceleration and the vertical acceleration.
In the embodiment of the present specification, the acceleration is a vector having a magnitude and a direction, and is used to indicate the speed of the speed change. The forward acceleration is used for representing the change of the speed along the forward direction of the vehicle, the forward acceleration can be any value which is larger than zero, equal to zero or smaller than zero, and when the forward acceleration is equal to zero, the vehicle is meant to run at a constant speed. When the acceleration sensor detects that the change frequency of the forward acceleration of the vehicle is high or the change amplitude is large, the acceleration and deceleration times in the running process of the vehicle can be represented to be large.
The lateral acceleration is used to characterize the change in velocity in the left-right direction along the vehicle body, for example: when the acceleration sensor detects that the change frequency of the lateral acceleration of the vehicle is higher or the change amplitude is larger, the vehicle can be represented to run on a road with more curves, such as a road on a disc.
The longitudinal acceleration, which is used to characterize the change in speed in the vertical direction of the vehicle body, can characterize a state of jerkiness in the driving state of the vehicle, for example: when the acceleration sensor detects that the vertical acceleration of the vehicle has a high change frequency or a large change amplitude, it can be said that the vehicle is running on a bumpy road section.
The real-time tire pressures of the respective tires of the vehicle can be obtained by the second pressure sensors 82 built in the respective tires; the real-time temperature of the tire of the vehicle is obtained by the temperature sensor 83 built in each tire.
The tire pressure compensation method provided by the embodiment of the specification can monitor the temperature of the tire through the temperature sensor 83 arranged in the tire, and when the real-time temperature of the tire is monitored to exceed the preset temperature range, warning information is sent to a user.
After the real-time tire pressure of each tire of the vehicle is acquired, the method further comprises the following steps:
s200: and judging whether the tire has a damage risk.
Specifically, the method may include step S210: acquiring the real-time change rate of the tire pressure of each tire of the vehicle;
the real-time rate of change of the tire pressure of each tire may be calculated by using the data acquired by the second pressure sensor 82.
S220: comparing the real-time change rate with a preset tire pressure change rate threshold value;
s230: and when the real-time change rate of the tire pressure is greater than or equal to the preset tire pressure change rate threshold value, judging that the tire has a damage risk, and sending a reminding message to a user.
The reminding information is used for reminding a user that the tire is damaged, avoiding driving on the road and overhauling as soon as possible. It should be noted that, in the embodiment of the present specification, a manner of transmitting the reminding information to the user is not specifically limited, and the reminding information may be transmitted to the user through a vehicle-mounted display screen, a vehicle-mounted voice broadcast, a warning light, and the like; the short message with the related reminding content can be sent to a mobile phone of the user through the Internet of vehicles big data platform, or the mail with the related reminding content is sent to a mailbox of the user, and the like; in addition to this, information related to the reminder information may be sent to a nearby maintenance station or the like so that the user and maintenance personnel can cope with the vehicle at risk of malfunction in a timely manner.
If the real-time tire pressure change rate is smaller than the preset tire pressure change rate threshold value, judging that the tire is not damaged and separated, and executing S300: and acquiring the tire pressure ideal value corresponding to each tire according to the position of the wheel, the running condition of the vehicle and the real-time temperature of each tire of the vehicle.
The wheel positions refer to the positions of the tires, and the front wheel and the rear wheel of the vehicle can have different tire pressures; and the position of the drive wheel, the tire pressure of the vehicle drive wheel may also be different from the tire pressure of the vehicle non-drive wheel.
When the vehicle runs on a bumpy road section, if the tire pressure of the tire is too high, drivers and passengers can easily feel obvious vibration; when the vehicle runs on a rugged mountain road, the vehicle frequently turns left and right, and if the tire pressure of the tire is too high, the vehicle obviously shakes during running, drivers and passengers easily feel carsick, and the user experience is poor. The real-time temperature of each tire is detected through the temperature sensor, so that the influence of seasonality on the ideal tire pressure of the tire can be considered, and the condition that the real-time temperature of the tire is increased due to heat generation after the vehicle works for a long time can be considered. Therefore, according to the tire pressure compensation method provided by the embodiment of the specification, the vehicle running condition is judged through the vehicle forward acceleration, the lateral acceleration, the vertical acceleration and the like, and on the basis, the tire pressure ideal value of each tire is obtained by combining the real-time temperature and other factors of each tire, so that the current vehicle running requirement can be better met, and the driving comfort and the fuel economy can be well considered.
Preferably, the tire pressure ideal value of each tire can also take into account the current actual load of the vehicle. That is, the ideal value of the tire pressure of each tire is preferably calculated according to the wheel position, the vehicle operation condition, the vehicle real-time load, the vehicle operation disclosure and the real-time temperature of each tire of the vehicle.
In addition, the driving habits and styles of the users can be used as one of the reference indexes, and the driving habits and styles can be obtained through historical data analysis of an accelerator and a brake pedal.
S400: and comparing the real-time tire pressure of each tire of the vehicle with the corresponding ideal tire pressure value.
S410: when the real-time tire pressure is smaller than the tire pressure ideal value corresponding to the real-time tire pressure, controlling the tire pressure compensation device to supplement air to the tire;
specifically, the method comprises the following operations:
calculating a first stroke of the piston according to the real-time tire pressure of each tire and the tire pressure ideal value corresponding to each tire (as shown in fig. 2, a first stroke L1);
controlling the first valve and the second valve to close, controlling the third valve to open, and controlling the piston to move from the initial position to the direction close to the third valve;
when the piston stroke is monitored to reach the first stroke, controlling a third valve to close;
after the third valve is closed, the first valve and the second valve are controlled to be opened, so that the second vent pipe is communicated with the external atmospheric environment, and the piston is restored to the initial position;
when the piston returns to the initial position, the first valve and the second valve are controlled to be closed.
It should be noted that, because the stroke of the piston moving towards the third valve is restricted by the second limit structure, when one piston movement (to its maximum stroke) cannot meet the air supplement requirement, the piston can be controlled to move towards the direction close to the third valve again after returning to its initial position, so that the stroke of the piston is accumulated to reach the required first stroke.
S420: when the real-time tire pressure is larger than the tire pressure ideal value corresponding to the real-time tire pressure, controlling the tire pressure compensation device to enable the tire to release pressure and exhaust air;
specifically, the method comprises the following steps:
calculating a second stroke of the piston according to the real-time tire pressure of each tire and the tire pressure ideal value corresponding to each tire;
controlling the third valve to open so that the tire is decompressed and exhausted, and the exhausted gas pushes the piston to move from the initial position to the direction far away from the third valve;
when the stroke of the piston reaching the second stroke (as shown in FIG. 3, the second stroke L2), controlling the closing of the third valve;
at the moment, the first valve and the second valve are controlled to be opened, so that the second vent pipe is communicated with the atmospheric environment, and the piston is returned to the initial position;
when the piston returns to the initial position, the first valve and the second valve are controlled to be closed.
Similarly to the inflation process, when the piston moves away from the third valve to the maximum of the stroke and still cannot meet the pressure relief and exhaust requirements, the piston returning to the initial position can be controlled to move away from the third valve again, and the stroke is accumulated until the required first stroke is reached.
Embodiments of the present specification further provide a tire pressure compensation system, where the tire pressure compensation system is configured to control a tire pressure compensation device provided in the above technical solution, and the tire pressure compensation system includes:
the first acquisition module is used for acquiring the running condition of the vehicle, the real-time tire pressure of each tire of the vehicle and the real-time temperature of each tire of the vehicle;
the second acquisition module is used for acquiring the tire pressure ideal value corresponding to each tire according to the wheel position, the vehicle running condition and the real-time temperature of each tire of the vehicle;
the first comparison module is used for comparing the real-time tire pressure of each tire of the vehicle with the tire pressure ideal value corresponding to the real-time tire pressure;
the first control module is used for controlling the tire pressure compensation device to supplement air to the tire when the real-time tire pressure is smaller than the tire pressure ideal value corresponding to the real-time tire pressure;
and the second control module is used for controlling the tire pressure compensation device to enable the tire to release pressure and exhaust when the real-time tire pressure is greater than the tire pressure ideal value corresponding to the real-time tire pressure.
The tire pressure compensating system further includes:
the third acquisition module is used for acquiring the real-time change rate of the tire pressure of each tire of the vehicle;
the second comparison module is used for comparing the real-time change rate with a preset tire pressure change rate threshold value;
and the reminding information sending module is used for sending reminding information when the real-time change rate of the tire pressure is greater than or equal to the tire pressure change rate threshold value.
While the invention has been described with reference to specific embodiments, it will be appreciated by those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the invention can be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Also, in some cases, the actions or steps recited in the claims can be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results.
Claims (10)
1. The tire pressure compensation device is characterized by comprising a cylinder (10), a first vent pipe (20), a second vent pipe (30), a piston, a first valve (50), a second valve (60), a third valve (70) and a driving component;
one end of the first vent pipe (20) is communicated with the cylinder (10), and the other end of the first vent pipe (20) is communicated with a vehicle tire valve;
the second vent pipe (30) is used for connecting the cylinder (10) and the first vent pipe (20);
the piston being at least partially disposed within the cylinder (10);
the first valve (50) is arranged on the second vent pipe (30);
the second valve (60) is arranged on the cylinder (10), and the second valve (60) is used for communicating the cylinder (10) with the atmosphere;
the third valve (70) is arranged on the first breather pipe (20), and the third valve (70) is used for communicating the first breather pipe (20) with vehicle tires;
the driving assembly is used for driving the piston to move, and the driving assembly is also used for driving the first valve (50), the second valve (60) and the third valve (70) to open and close.
2. A tire pressure compensating device according to claim 1, wherein the piston comprises a first piston (41), a second piston (42) and a piston rod (43), the first piston (41) being arranged in the cylinder (10), the second piston (42) being arranged in the first vent tube (20), the first piston (41) and the second piston (42) being connected by the piston rod (43).
3. A tire pressure compensating device according to claim 2, wherein the second vent pipe (30) comprises a first port for communicating with the cylinder (10) and a second port for connecting with the first vent pipe (20);
the distance between the second port and the cylinder (10) is larger than the stroke of the second piston (42);
the distance between the first port and the second vent pipe (20) is larger than the stroke of the first piston (41).
4. The tire pressure compensating device of claim 2, further comprising a first limit structure and a second limit structure;
the first limiting structure is arranged on one side, close to the first vent pipe (20), of the first port and is used for limiting the stroke of the first piston;
the second limiting structure is arranged on one side, close to the cylinder (10), of the second port and is used for limiting the stroke of the second piston.
5. A tire pressure compensating method, characterized in that the method is based on the tire pressure compensating device of any of claims 1 to 4, comprising:
acquiring the running condition of a vehicle, the real-time tire pressure of each tire of the vehicle and the real-time temperature of each tire of the vehicle;
acquiring ideal tire pressure values corresponding to the tires according to the positions of the wheels, the running conditions of the vehicle and the real-time temperature of each tire of the vehicle;
comparing the real-time tire pressure of each tire of the vehicle with the corresponding tire pressure ideal value;
when the real-time tire pressure is smaller than the tire pressure ideal value corresponding to the real-time tire pressure, controlling the tire pressure compensation device to supplement air to the tire;
and when the real-time tire pressure is greater than the tire pressure ideal value corresponding to the real-time tire pressure, controlling the tire pressure compensation device to enable the tire to release pressure and exhaust.
6. The tire pressure compensation method according to claim 5, wherein before obtaining the tire pressure ideal value corresponding to each tire according to the wheel position, the vehicle operation condition and the tire real-time temperature of each wheel of the vehicle, the method further comprises:
acquiring the real-time change rate of the tire pressure of each tire of the vehicle;
comparing the real-time change rate with a preset tire pressure change rate threshold value;
and when the real-time change rate of the tire pressure is greater than or equal to the tire pressure change rate threshold value, sending reminding information.
7. The tire pressure compensation method according to claim 5, wherein the controlling the tire pressure compensation device to supplement air to the tire includes:
calculating a first stroke of the piston according to the real-time tire pressure and the tire pressure ideal value;
controlling the first valve and the second valve to close, controlling the third valve to open, and controlling the piston to move from the initial position to the direction close to the third valve;
when the piston stroke reaches the first stroke, controlling the closing of a third valve;
controlling the first valve and the second valve to be opened so that the piston returns to the initial position;
when the piston returns to the initial position, the first valve and the second valve are controlled to be closed.
8. The tire pressure compensating method according to claim 6, wherein the controlling the tire pressure compensating device so that the tire is depressurized and exhausted includes:
calculating a second stroke of the piston according to the real-time tire pressure and the tire pressure ideal value;
controlling the third valve to open, and the tire releases pressure and exhausts air and pushes the piston to move from the initial position to the direction far away from the third valve;
when the piston stroke reaches the second stroke, controlling a third valve to close;
controlling the first valve and the second valve to be opened so that the piston returns to the initial position;
when the piston returns to the initial position, the first valve and the second valve are controlled to be closed.
9. The tire pressure compensation method according to claim 4, wherein the vehicle operating condition is obtained by the steps comprising:
acquiring vehicle running speed and vehicle running acceleration, wherein the vehicle running acceleration comprises forward acceleration, transverse acceleration and vertical acceleration;
and acquiring the running condition of the vehicle according to the running speed, the forward acceleration, the transverse acceleration and the vertical acceleration of the vehicle.
10. A tire pressure compensating system for controlling the tire pressure compensating device according to any one of claims 1 to 4, comprising:
the first acquisition module is used for acquiring the running condition of the vehicle, the real-time tire pressure of each tire of the vehicle and the real-time temperature of each tire of the vehicle;
the second acquisition module is used for acquiring the tire pressure ideal value corresponding to each tire according to the wheel position, the vehicle running condition and the real-time temperature of each tire of the vehicle;
the first comparison module is used for comparing the real-time tire pressure of each tire of the vehicle with the tire pressure ideal value corresponding to the real-time tire pressure;
the first control module is used for controlling the tire pressure compensation device to supplement air to the tire when the real-time tire pressure is smaller than the tire pressure ideal value corresponding to the real-time tire pressure;
and the second control module is used for controlling the tire pressure compensation device to enable the tire to release pressure and exhaust when the real-time tire pressure is greater than the tire pressure ideal value corresponding to the real-time tire pressure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011377959.9A CN112477529A (en) | 2020-11-30 | 2020-11-30 | Tire pressure compensation device, method and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011377959.9A CN112477529A (en) | 2020-11-30 | 2020-11-30 | Tire pressure compensation device, method and system |
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| CN112477529A true CN112477529A (en) | 2021-03-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113524989A (en) * | 2021-08-11 | 2021-10-22 | 深圳市其利天下技术开发有限公司 | Tire pressure information acquisition equipment and operation system thereof |
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Application publication date: 20210312 |