KR100408802B1 - A method for controlling air-pressure of a tyre and a system thereof - Google Patents

Abstract

If the pressure in the tire is greater than or less than the standard value range, the tire is automatically controlled to fall within the standard value range. For the purpose of providing;

Sensing means comprising a tire pressure sensor and a tank pressure sensor capable of sensing tire internal pressure and internal pressure of a pneumatic tank disposed inside the tire;

A controller for comparing and analyzing information on the pressure sent from the sensing means according to a previously input program;

An actuator for selectively operating the filling valve disposed in the pneumatic tank under the control of the controller to fill the air in the pneumatic tank into the tire;

It provides a tire pressure management system and a control method comprising a receiver for operating the display and the alarm means in accordance with the information wirelessly communicated from the controller.

Description

Tire pressure control system and its control method {A METHOD FOR CONTROLLING AIR-PRESSURE OF A TIRE AND A SYSTEM THEREOF}

The present invention relates to a system for maintaining a tire pressure of a wheel applied to various land transportation means and a control method thereof, and more particularly, to effectively manage tire pressure and prevent accidents that may occur due to a decrease in pressure. A tire pneumatic pressure keeping system and a control method thereof are provided.

For example, the tire is coupled to the wheel to absorb the shock transmitted from the road surface while integrally rotating, transmits the driving force and the braking force to the road surface, and generates a cornering force corresponding to the steering angle to perform the function of delivering to the road surface.

Accordingly, the air pressure filled in the tire must be maintained at an appropriate pressure to properly perform this function as well as to ensure driver and passenger safety.

However, even if there is no abnormality in the tire, if it is left unchecked, the air naturally penetrates the rubber due to the crossover or the change of seasons. This follows, and in recent years, the means which can alert when the air pressure falls is proposed.

That is, to alert the drop of air pressure by the color development, light emission, and sounding means at the valve position, to display the air pressure in the driver's seat and to alarm the drop, to control the air pressure to an arbitrary set value, and to provide an alarm device. Etc.

Looking at the example, a number of public utility model publication No. 93-25337, No. 95-12281, No. 97-61126 and the like have been proposed in a number.

However, in the proposed technique as described above, a method of calculating tire pressure is difficult, and the structure is not only complicated, but is proposed only as an abstract concept without specific examples, and thus has many problems in application to automobiles.

In the case of the latter publication No. 97-6112, when a tire pressure drops below a certain value, a simple method of detecting the pressure by a sensor and wirelessly supplying it to a controller is adopted. Even if it doesn't help much, there is a problem.

Therefore, the present invention was invented to solve the above problems, the object of the present invention is to automatically control when the pressure in the tire is greater than or less than the standard value range to enter the standard value range, traffic accidents due to air pressure drop It is an object of the present invention to provide a tire inflation pressure maintaining system and a control method thereof that can solve the problems associated with the occurrence of the same.

1 is a block diagram schematically showing a holding system of the present invention;

Figure 2 is a side view of the wheel in the state the present invention is applied.

3 is a cross-sectional view taken along the line II of FIG. 2.

4 is a cross-sectional view of the connection portion of the pneumatic tank.

Figure 5 is a cross-sectional view of the air valve applied to the present invention.

6 is an enlarged cross-sectional view of the main portion of the present invention.

7 is an operational flowchart of the first embodiment according to the present invention;

8 is an operational flowchart of a second embodiment according to the present invention.

In order to realize this, the present invention includes a tire pressure sensor and a tank pressure sensor for detecting the tire pressure and the internal pressure of the pneumatic tank disposed inside the tire;

A controller for comparing and analyzing information on the pressure sent from the sensing means according to a previously input program;

An actuator for selectively operating the filling valve disposed in the pneumatic tank under the control of the controller to fill the air in the pneumatic tank into the tire;

It provides a tire pressure maintaining system comprising a receiver for operating the display and the alarm means in accordance with information wirelessly communicated from the controller.

The pneumatic tank is fixedly arranged in a pair of left and right in the middle concave portion of the rim outer circumferential surface of the wheel, and one side portion is communicated with each other through the union joint pipe, and has a filling air valve to fill the pneumatic pressure from the outside at a predetermined position, A filling air valve for selectively supplying the air pressure in the pneumatic tank to the inside of the tire is disposed on one side of the opposite side of the union joint pipe, and provides a tire air pressure maintaining system having a tank pressure sensor therein.

The actuator is composed of a solenoid operated in one direction to provide a tire air pressure maintaining system disposed adjacent to the filling air valve so that the operating rod thereof can press the mandrel of the filling air valve under the control of the controller.

In addition, a drain air valve for discharging the tire pressure at a predetermined interval from the filling air valve is disposed, the actuator for operating the filling air valve and the drain air valve selectively while the two-way operation is made between them A tire pneumatic pressure retention system is provided.

The controller is concealed and protected in one small case, the battery is used as a power source for the actuator inside the case, the transmitter is provided for the wireless transmission to the receiver disposed on the outside of the rim closest to the actuator To provide a tire pressure maintaining system.

And a first step of detecting the tank pressure and the tire pressure according to the signals input from the pressure sensor in the pneumatic tank and the tire pressure sensor.

A second step of, when the tank pressure and the tire pressure are detected in the first step, inputting the information to the receiver so that the information is displayed on the display and determining whether the tire pressure is less than the reference value range;

A third step of confirming whether the tire pressure is within the reference value range while opening the filling valve of the pneumatic tank to fill the air when it is determined that the tire pressure is less than the reference value range in the second step;

A fourth step of returning to the third step if the tire pressure is not within the reference value range in the third step, closing the filling valve if the tire pressure is within the reference value range, and determining whether the pressure in the pneumatic tank is equal to or less than the reference value;

In the fourth step, if the pneumatic tank pressure is greater than or equal to the reference value, and terminates, and if determined to be less, it provides a tire pneumatic pressure maintenance control method comprising the step of transmitting a signal to the receiver to alert the receiver. .

In addition, the first step of detecting the tank pressure and the tire pressure in accordance with the signals input from the pressure sensor and the tire pressure sensor in the pneumatic tank;

If the tank pressure and the tire pressure are detected in the first step, a second step of determining whether the tire pressure is within a reference value while inputting the information to the receiver to be displayed on the display;

A third step of determining whether the tire pressure is less than the reference value range when it is determined that the tire pressure is not within the reference value range in the second step;

In the third step, if it is determined that the tire pressure is smaller than the reference value range, the opening time of the filling valve is calculated to control the opening of the filling valve by that time, and if it is determined that the tire pressure is larger than the reference value range, the opening time of the drain valve. Calculating a fourth step of controlling the opening of the drain valve by the time;

A fifth step of determining whether the pressure in the pneumatic tank is equal to or less than the reference value after the fourth step is completed;

In the fifth step, if the pneumatic tank pressure is greater than or equal to the reference value, and terminates, if determined to be less, it provides a tire air pressure maintenance control method comprising a sixth step of transmitting a signal to the receiver to alert the receiver.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

1 is a block diagram schematically showing the configuration of the system according to the present invention, in which the controller ECU receives information on the air pressure from the tire pressure sensor 2 and the pneumatic tank pressure sensor 4, which are sensing means. .

In addition, the information on the air pressure is compared with the previously input information to control the actuator 6 to supplement or discharge the tire pressure so that the tire pressure can be maintained at an appropriate value.

In addition, when information about the tire pressure or the pneumatic tank pressure input to the controller ECU is input to the receiver 8 arranged at a predetermined position of the vehicle body through wireless communication, the receiver 8 of the receiver 8 transmits the information to the driver's seat instrument panel. It is installed to display the pressure on the display 10, in some cases by operating the alarm means 12 consisting of an alarm sound, alarm lamp, etc. to let the driver recognize the degree of danger of the current tire pressure.

2 and 3 are sectional views showing the configuration of the main part of the present invention, and reference numeral 14 denotes a wheel generically.

The wheel 14 is composed of a rim 16 and a tire 18, and fixedly arranged in a pair of left and right pneumatic tanks 22 and 24 on the middle concave portion 20 of the outer peripheral surface of the rim 16 It was.

The pneumatic tanks 22 and 24 communicate with any one of two parts facing each other through the union joint pipe 26 as shown in FIG. It is formed by two pneumatic tanks in consideration of the whole balance of 14), and may be formed as one tank if there is no problem in balance.

In addition, the height of the pneumatic tanks 22 and 24 should be formed smaller than the outer height of the rim 16 in consideration of the puncture time.

In addition, one side pneumatic tank 22 is provided with an air valve 28 so as to fill air pressure from the outside, so that when the air pressure in the pneumatic tank 22, 24 is exhausted to the reference value or less, it can be filled.

As described above, the air valve 28 is a general air valve as shown in FIG. 5, and when the mandrel 30 is pressed, the air valve 28 is well-known to have a structure in which the outside and the pneumatic tank 22 communicate with each other to inject air. Will be omitted.

On one side of the pneumatic tanks 22, 24 facing each other on the opposite side of the union joint pipe 26, as shown in Figure 6, the filling air valve 32 is disposed, the filling air valve 32 A drain air valve 34 is disposed in front of one side of the other side, that is, the front side of the other side pneumatic tank 24.

The filling air valve 32 and the drain air valve 34 has the same structure as the air valve 28, and the outer end portions of the mutual core rods 36 and 38 face each other. .

Therefore, when the core rod 36 of the filling air valve 32 is pressed, the pneumatic tank 22 and the tire 18 are communicated with each other. When the core rod 38 of the drain air valve 34 is pressed, the tire 18 As the outside communicates, the tire pressure can be released.

And an actuator 6 is disposed between the filling air valve 32 and the drain air valve 34, the actuator 6 is a solenoid that can operate the operating rod 40 in both directions, operating rod When the 40 is operated to the left in the drawing, the high pressure air in the pneumatic tank 22 is replenished into the tire 18 by pressing the core rod 36 of the discharge air valve 32.

In addition, in contrast to the above, when the operating rod 40 is moved to the right in the drawing, the pressure in the tire 18 is discharged to the outside by pressing the core rod 38 of the drain valve 34.

Actuator 6 that is operated as described above is known in the operation direction of the operating rod 40 is changed according to the power supplied to the coil not shown is arranged on both sides, the detailed description of the configuration and operation is omitted Let's do it.

And the pressure sensor (2) capable of sensing the internal pressure in any one of the pneumatic tanks (22, 24) of the tank (24), the pressure sensor (4) is also disposed inside the tire (18), In the present invention, the arrangement is shown outside the actuator 6.

The pressure sensor (2) (4) is connected to the controller (ECU) disposed on the outside of the rim 16 by wire or wireless to detect the tank pressure and tire pressure to be delivered to the controller (ECU).

In addition, since the actuator 6 needs to be supplied with power, the actuator 6 is inevitably connected to the controller ECU, and the wire 42 connecting the actuator 6 and the controller ECU is as shown in FIG. 6. A hole was drilled in the rim 16, and the connection was made using a packing 44 through which the wire 42 penetrated.

The controller ECU is concealed and protected in one small case 46, and a battery used as a power source of the actuator 6 is embedded in the case 46, and wireless transmission is performed to the receiver 8. The sending part 48 is provided.

Accordingly, since the controller case 46 including the controller ECU is preferably made as small as possible, it is preferable to apply a battery having a minimum size and weight to the battery embedded therein, and according to the capacity of the battery, the actuator 6 may also be used. It is good to be the smallest.

The receiver 8, which receives information from the transmitter 48, is disposed in the vehicle body near the wheel 14, and its position is easily from the transmitter 48 of the controller ECU that rotates together with the wheel 14. It doesn't matter wherever you can get information.

The display 10 and the alarm means 12 to easily recognize the driver according to the signal transmitted from the receiver 8 is disposed close to the driver's seat so that the driver can easily check even during the driving process. It is preferable.

According to the present invention made as described above, the pneumatic tanks (22) and (24) are operated in a state filled with high pressure air of the tire specified pressure in a state where the tire pressure is normally maintained.

When the tire pressure is lowered in such a state, when the controller ECU determines that the pressure is actually lowered based on the signal input from the pressure sensor 4, the operating rod 40 of the actuator 6 is shown in the drawing. It will be controlled to operate to the left.

Then, the operating rod pushes the core rod 36 of the filling air valve 32, so that the high pressure air in the pneumatic tanks 22 and 24 is filled into the tire to maintain normal tire pressure.

On the contrary, when the tire pressure is too high, it is possible to maintain the proper tire pressure by reducing the tire pressure by operating the drain air valve 34.

Of course, since the tire pressure is rarely higher than the prescribed value, the drain air valve 34 may be omitted, and in the case where the drain air valve 34 is omitted, the actuator 6 and the one-way actuator 6 may be omitted. Will be applied.

Looking at the operating flow of the present invention operated as described above, Figure 7 is an automatic flow when the drain valve is not applied.

First, when the vehicle is started and starts to operate, the controller ECU detects the tank pressure and the tire pressure according to signals input from the tank pressure sensor 2 and the tire pressure sensor 4 (S100).

When the tank pressure and tire pressure are detected as described above, the information is input to the receiver (S110) to be displayed on the display (S120), and on the other hand, it is determined whether the tire pressure is below the reference range (S130).

When the tire pressure is determined to be equal to or less than the reference value in step S130, the controller ECU drives the actuator 6 to open the filling valve 32 so that air is filled (S140), and the tire pressure is within the reference value range. I will check my authorization (S150).

If the tire pressure is not within the reference value range in step S150, the flow is returned to step S140. If the tire pressure is within the reference value range, the filling valve 32 is closed (S160), and it is determined whether the pressure in the pneumatic tanks 22 and 24 is equal to or less than the reference value. It is made (S170).

In the above, the pressure reference in the pneumatic tanks 22 and 24 should be at least greater than the tire pressure because the pressure must be high for filling when the tire pressure is lowered.

If it is determined in step S170 that the tank pressure is less than the reference value, it is input to the receiver (S180), and the alarm means 12 is terminated after the alarm means 12 by the signal (S190).

If the tank pressure is greater than the reference value in step S170, of course it ends immediately.

In the same process as described above will be controlled automatically when the tire pressure is reduced.

FIG. 8 shows the operation flow when the drain air valve 34 is applied. First, when the vehicle is started and the operation is started, the controller ECU shows the tank pressure sensor 2 and the tire pressure sensor 4. Tank pressure and tire pressure are detected in accordance with the signal input from the (S200).

When the tank pressure and tire pressure are detected as described above, the information is input to the receiver (S210) to be displayed on the display (S220), and on the other hand, it is determined whether the tire pressure is below the reference value range (S130).

If it is determined in step S230 that the tire pressure is less than the reference value range, it is determined whether the tire pressure is smaller than the reference value range (S240), if it is determined that the opening time of the filling valve 32 is calculated according to the previously input data At step S250, the filling valve 32 is controlled to replenish air at the calculated time period at step S260.

And if it is determined that it is not small, after all, since the tire pressure is the reference value range is large, the opening time of the drain valve 34 is calculated according to the previously input data (S270), and the drain valve 34 is controlled by the calculated time zone. The air is discharged (S280).

After filling and discharging the air by controlling the filling and drain valves in steps S260 and S280 to be within the reference value range, the controller ECU determines whether the pressure in the pneumatic tanks 22 and 24 is lower than the reference value (S290). ).

In the above, the pressure reference in the pneumatic tanks 22 and 24 should be at least greater than the tire pressure because the pressure must be high for filling when the tire pressure is lowered.

If it is determined in step S290 that the tank pressure is equal to or less than the reference value, it is input to the receiver (S300), and the alarm means 12 is terminated after the alarm means 12 by the signal (S310).

If the tank pressure in the step S290 or more than the reference value, of course it is terminated immediately.

In the above embodiments, the present invention is not limited, and includes all inventions that can be easily implemented from the embodiments.

As described above, according to the present invention, when the pressure in the tire is larger or smaller than the reference value range, the inventor automatically controls it to fall within the reference value range, thereby preventing the occurrence of traffic accidents and other problems caused by air pressure drop. will be.

Claims (8)

Sensing means comprising a tire pressure sensor and a tank pressure sensor capable of sensing tire internal pressure and internal pressure of a pneumatic tank disposed inside the tire; A controller for comparing and analyzing information on the pressure sent from the sensing means according to a previously input program; An actuator for selectively operating the filling valve disposed in the pneumatic tank under the control of the controller to fill the air in the pneumatic tank into the tire; It comprises a receiver for operating the display and alarm means in accordance with the information wirelessly communicated from the controller, The pneumatic tank is fixedly arranged in a pair of left and right in the middle concave portion of the rim outer circumferential surface of the wheel, one side portion is in communication with the union joint pipe, and has a filling air valve for filling the pneumatic pressure from the outside at a predetermined position, the A tire air pressure maintaining system, comprising a filling air valve for selectively supplying air pressure in the pneumatic tank to the inside of the tire on one side of the opposite side of the union joint pipe, and having a tank pressure sensor therein. delete The method of claim 1, wherein the actuator is made of a solenoid operated in one direction, the operating rod is maintained in the tire pneumatic pressure, characterized in that disposed adjacent to the filling air valve to press the mandrel of the filling air valve under the control of the controller system. According to claim 1, wherein the front of the filling air valve is disposed in the drain air valve for discharging the tire pressure at a predetermined interval, and the bi-directional operation between the filling air valve and the drain air valve is selectively A tire pneumatic pressure retention system, characterized in that the actuator is arranged to operate the filling air valve and the drain air valve. The rim of claim 1, wherein the controller is concealed and protected in one small case, and a battery used as a power source for an actuator is embedded in the case, and a rim closest to the actuator is provided by a transmitter for wireless transmission to a receiver. A tire pneumatic pressure retention system, characterized in that disposed on the outside of the. 2. The tire pneumatic pressure retention system according to claim 1, wherein the actuator and the controller are connected by wires that penetrate the rim and pass through the packing to block the rim. delete A first step of detecting tank pressure and tire pressure according to signals input from a pressure sensor in the pneumatic tank and a tire pressure sensor; If the tank pressure and the tire pressure are detected in the first step, a second step of determining whether the tire pressure is within a reference value while inputting the information to the receiver to be displayed on the display; A third step of determining whether the tire pressure is less than the reference value range when it is determined that the tire pressure is not within the reference value range in the second step; In the third step, if it is determined that the tire pressure is smaller than the reference value range, the opening time of the filling valve is calculated to control the opening of the filling valve by that time, and if it is determined that the tire pressure is larger than the reference value range, the opening time of the drain valve. Calculating a fourth step of controlling the opening of the drain valve by the time; A fifth step of determining whether the pressure in the pneumatic tank is equal to or less than the reference value after the fourth step is completed; In the fifth step, if the pneumatic tank pressure is greater than or equal to the reference value, and terminates, if determined to be less, the tire pneumatic pressure maintenance control method comprising the step of transmitting a signal to the receiver to perform an alarm in the receiver.