KR100811992B1 - Method and Apparatus for Tire Auto Location of Tire Pressure Monitoring System - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for automatically positioning a tire in a tire pressure monitoring system. Particularly, when a tire of a vehicle is cross-exchanged, a tire-specific identifier (ID) corresponding to a vehicle model is carried on an RF signal. The tire position can be automatically reset by sending the tire pressure of the tire to the transmitter which sends the tire identification data and tire positioning data to the receiver to determine whether the tire pressure is normal. And a method and apparatus for automatically positioning a tire in a tire pressure monitoring system.

In the present invention, even when the tires of the vehicle are cross-changed or replaced, the receiver detects the pressure of each tire of the vehicle and resets the tire position so that the receiver recognizes the ID of the transmitter. It is possible to monitor the tire pressure condition by properly detecting the tire pressure condition, and by accurately monitoring the tire pressure condition of the vehicle, it is possible to prevent a safety accident that may be caused by the tire pressure being out of the specified pressure.

Transmitter, Receiver, Display, Mode Switch, Microcontroller

Description

Method and apparatus for automatic tire positioning in tire pressure monitoring system {Method and Apparatus for Tire Auto Location of Tire Pressure Monitoring System}             

1 is a flowchart for automatic tire positioning in a tire pressure monitoring system according to the present invention.

2 is a block diagram of a transmitter for auto tire positioning in a tire pressure monitoring system according to the present invention.

3 is a block diagram of a data format transmitted from a transmitter to a receiver in FIG.

Figure 4 is a block diagram of the receiver for automatic tire positioning in the tire pressure monitoring system according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: transmitting unit 11: pressure sensor

12: temperature sensor 13: rolling switch

14: MICOM of the transmitter 15: RF transceiver

16: bidirectional RF antenna 17: power supply

20: receiver 21: bidirectional RF antenna                 

22: RF transceiver 23: MICOM of the receiver

24: mode switch 25: power circuit

26: can controller 30: display unit

31: display drive

The present invention relates to a method and apparatus for automatically positioning a tire in a tire pressure monitoring system. More particularly, when a tire of a vehicle is cross-exchanged, a tire unique identifier (ID) according to a vehicle type is converted into an RF signal. The tire position is automatically sent to the transmitter for sensing each tire pressure, and the tire unique identifier (ID) and positioning data are loaded on the RF signal to the receiver for determining whether the tire pressure is normal. A method and apparatus for automatically positioning a tire in a tire pressure monitoring system that can be reset.

The car tire is the only part where the road surface is in contact with the car, and supports the load of the car, transmits the driving force and the braking force of the car to the road surface, and functions to alleviate the impact from the road surface and change or maintain the direction of the car. When the pressure of the car tire is higher than the proper pressure, the feeling of ride becomes worse and the tire wears faster, and when the pressure of the tire is low, the operability of the car is deteriorated, which may cause safety accidents and fuel economy. . Therefore, tires for automobiles should always maintain the specified pressure.

A tire pressure monitoring device is used to check whether the air pressure of such automobile tires is maintaining a prescribed pressure. The monitoring device includes a transmitter installed inside each tire and a receiver mounted to the body of the vehicle. Each transmitter measures the air pressure of the tire and sends data containing the measured pressure value. The receiver receives the data transmitted from the transmitter and displays information about the air pressure of each tire on a display located in the driver's seat.

However, such a tire pressure monitoring system initially registers a tire unique identifier (ID) and tire positioning data according to the vehicle model. This initial registration is usually performed when the tire is first installed on the vehicle. Therefore, when the tires of the vehicle are cross-exchanged or replaced, the receiver cannot recognize the tire ID position and the ID of the transmitter that detects the pressure of each tire of the vehicle and cannot accurately monitor the tire pressure. There is a problem.

In addition, when the tire pressure is lower than the prescribed pressure because the pressure state of the tire is not accurately monitored, there is a problem that can cause a safety accident due to the deterioration of the operability of the car.

The present invention has been made to solve the conventional problems as described above, and when the tires of the vehicle is cross-exchanged, the tire unique identification code (ID) according to the vehicle type to the RF signal to each tire pressure Tire pressure monitoring, which transmits the sensing unit and re-sends the tire's unique identifier (ID) and positioning data on the RF signal to the receiving unit to determine whether the tire pressure is normal. It is an object of the present invention to provide a method and apparatus for automatically positioning tires in a system.

In the tire pressure monitoring system of the present invention for achieving the above object, the automatic tire position setting method comprises the steps of: switching to a tire position setting mode via a mode changeover switch attached to a receiver by a driver; A receiving unit is switched to a transmitting mode by the mode switching switch and transmits a tire-specific identifier (ID) according to a vehicle type to an RF signal to each transmitting unit through a plurality of bidirectional RF antennas; Recognizing a tire-specific identifier (ID) transmitted from the receiver by transmitting the transmitter to a reception mode, and re-transmitting the identifier (ID) and the tire position signal to the receiver through a bidirectional RF antenna; Storing the identification code (ID) and the tire position signal transmitted from the transmitter to the receiver; Determining, by the receiver, whether all identification codes (ID) and tire position signals of all transmitters are stored; And continuously transmitting the RF signal including the tire-specific identifier (ID) according to the vehicle model until the transmitter responds according to the determination.                     

In the tire pressure monitoring system of the present invention, an automatic tire positioning apparatus includes a plurality of wireless transmitters for sensing a tire pressure and wirelessly transmitting the pressure data, and pressure data of tires respectively transmitted from the plurality of transmitters. And a display unit for displaying the plurality of tire pressure data demodulated by the radio receiver.

The plurality of wireless transmitters may be configured to identify tires unique to tires according to a preset vehicle type by receiving a tire detection signal detected from a pressure sensor, a temperature sensor, a rolling switch, and the pressure sensor to detect pressure, temperature, and shaking of the tire. MICOM of the transmitter for converting and outputting the symbol ID and positioning data into a predetermined data format, and RF of the transmitter for modulating the formatted data received from the microcomputer and transmitting it wirelessly through the bidirectional RF antenna. It is preferred to be composed of a transceiver.

The plurality of radio receivers include a plurality of bidirectional RF antennas for receiving data transmitted wirelessly from a transmitter, an RF transceiver for receiving, detecting and outputting radio data received from the plurality of RF antennas, respectively; Receives the detected signal from the RF transceiver and compares the pressure and temperature data of the prescribed tire to generate an alarm control signal when the specified pressure and temperature data is exceeded, and to control to display respective tire pressure and temperature data. It is preferable that the receiver is configured with a MICOM and a mode change switch connected with the MICOM to set a tire unique identifier ID and position according to the vehicle type.                     

In the present invention, when the tire of the vehicle is cross-exchanged or replaced, the driver operates the mode changeover switch for setting the tire position, and puts a tire unique identifier (ID) according to the vehicle type on the RF signal. The tire position can be automatically reset by sending the tire pressure sensing unit and re-sending the tire's unique identifier (ID) and positioning data on the RF signal to the receiving unit to determine whether the tire pressure is normal. will be.

Therefore, even when the tires of the vehicle are cross-exchanged or replaced, the receiver recognizes the identifier ID of the transmitter normally by resetting the identifier ID and the tire position of the transmitter, which detects the pressure of each tire of the vehicle. The tire pressure can be monitored at all times.

In addition, by accurately monitoring whether the tire pressure is higher or lower than the specified pressure, it is possible to prevent safety accidents that may occur.

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

1 is a flowchart for automatic tire positioning in a tire pressure monitoring system according to the present invention.

Explaining an example where a car tire is cross-changed and tire auto positioning is required in the tire pressure monitoring system,

As shown in FIG. 1, first, a mode switching switch 24 attached to a receiver 20 by a driver is switched to a mode for resetting a tire position (S1). By the operation of the mode switching switch 24, the receiver 20 is switched to the transmission mode, and the tire-specific identifier (ID) according to the vehicle model is loaded on the RF signal to each tire through a plurality of two-way RF antennas 21. It transmits to the installed transmission part 10 (S2).

The transmitter 10 switches to a reception mode and recognizes a tire unique identifier (ID) transmitted from the receiver 20, and puts the identifier ID of the transmitter on an RF signal through a bidirectional RF antenna 16. Upon retransmission to the receiver 20 (S3), the receiver 20 stores the identifier (ID) and the position of the transmitter transmitted from the transmitter 10 (S4).

Subsequently, the receiver 20 determines whether the IDs and positions of all the transmitters 10 are stored in the memory (S5), and puts a tire-specific identifier (ID) according to the vehicle model on the RF signal. By continuously transmitting (S6) to the transmitter, the resetting of the tire position in the tire pressure monitoring system by a simple operation of the user mode switching switch 24 (S7).

That is, when the tire of the vehicle is cross-exchanged or replaced, the driver first operates the mode changeover switch 24 connected to the receiver 20 to reset the tire position. Is converted into a tire unique identification code (ID) according to the vehicle model is transmitted to the transmitter 10 for sensing each tire pressure and temperature, etc. via a plurality of bi-directional RF antenna 16, the transmitter is a unique The identification code (ID) and tire positioning data are loaded on the RF signal and retransmitted to the receiver through the RF antenna 16, and it is determined whether the identification code (ID) and the positions of all the transmitters 10 are stored in the memory. The tire unique identifier (ID) in accordance with the RF signal is transmitted to the transmitter continuously to reset the position of the tire automatically.

2 is a block diagram of a transmitter for automatic tire position setting in the tire pressure monitoring system according to the present invention, and FIG. 3 is a block diagram of a data format transmitted from the transmitter of FIG. 2 to the receiver.

The apparatus for automatic tire positioning in the tire pressure monitoring system of the present invention includes a plurality of wireless transmitters 10 for sensing tire pressure and wirelessly transmitting the pressure data, and the plurality of transmitters 10, respectively. And a display unit 30 for displaying the plurality of tire pressure data demodulated by the wireless receiving unit 20, and a wireless receiving unit 20 for controlling to sequentially receive and demodulate the transmitted pressure data of the tire.

As shown in FIG. 2, the plurality of wireless transmitters 10 include a pressure sensor 11, a temperature sensor 12, a rolling switch 13 for detecting pressure, temperature, and shaking of the tire, and A MICOM 14 of a transmitter for receiving a tire detection signal detected from a pressure sensor or the like and converting and outputting a tire-specific identifier (ID) and positioning data according to a preset vehicle type into a predetermined data format; It consists of an RF transceiver (15) of a transmitter for modulating the formatted data received from the microcomputer (14) and transmitting it wirelessly through the bidirectional RF antenna (16). In addition, a power supply unit 17 such as a battery for supplying power to the transmitter 10 is connected.

Here, as shown in FIG. 3, the tire unique identification code (ID) and positioning data according to the vehicle type are converted into a synchronization signal (SYNC), an ID signal for distinguishing a vehicle, a tire position signal, and a tire. It consists of a pressure signal, a tire temperature signal, a power supply voltage signal and an error check signal (CRC).

4 is a block diagram of a receiver for automatic tire positioning in a tire pressure monitoring system according to the present invention.

As shown in FIG. 4, the plurality of radio receivers 20 receive a plurality of bidirectional RF antennas 21 for receiving data transmitted wirelessly from the transmitter 10 and the plurality of RF antennas 21. RF transceiver 22 for receiving, detecting and outputting the received wireless data, and receiving the detected signal from the RF transceiver 22, and comparing the prescribed pressure and temperature data of the prescribed tire with the prescribed pressure and When the temperature data is exceeded, an alarm control signal is generated, and it is connected to the MICOM 23 of the receiver for controlling to display respective tire pressure and temperature data, and the MICOM 23 connected to the vehicle model. It is composed of a mode switching switch 24 for setting the tire unique identifier (ID) and position according. At this time, the mode switching switch 24 is connected to the microcomputer 23 through a CAN (Controller area network) and the can drive 27 to perform a mode switching to reset the position of the car tire by the user's operation. In addition, the receiving unit 20 is connected to a power supply circuit 25 for supplying power.

As shown in FIG. 4, the display unit 30 is located in a car interior and displays a state such as a tire pressure, temperature, and rolling to a user, and can display warnings by sound and LEDs. Consists of BUZZER, etc. At this time, the LCD, LED, and BUZZER are connected to the microcomputer 23 of the receiver 20 through the display unit drive 31 to display the state of the tire.

In the present invention as described above, when the tire of the vehicle is cross-exchanged or replaced, the driver operates the mode switching switch 24 connected to the receiver 20 to reset the tire position, whereby the receiver 20 transmits the transmission mode. Is converted into a tire, and the tire unique identification code (ID) according to the vehicle model is loaded on the RF signal and transmitted to the transmitter 10 which senses each tire pressure and temperature through a plurality of bidirectional RF antennas 16, and the transmitter is unique By re-sending the identification code (ID) and tire positioning data of the RF signal to the receiver via the RF antenna 16, the position of the tire is automatically reset.

As described above, the tire pressure monitoring system according to the present invention by resetting the identification position (ID) and the tire position of the transmitter for detecting the pressure of each tire of the vehicle even when the tire of the vehicle is cross-exchanged or replaced The receiver can recognize the ID of the transmitter and monitor the tire pressure condition normally.

In addition, by accurately monitoring the tire pressure state of the vehicle, it is possible to prevent a safety accident that may occur due to the tire pressure is out of the specified pressure.

Claims (4)

Switching to a tire position setting mode through a mode change switch attached to a receiver by a driver; A receiving unit is switched to a transmitting mode by the mode switching switch and transmits a tire-specific identifier (ID) according to a vehicle type to an RF signal to each transmitting unit through a plurality of bidirectional RF antennas; Recognizing a tire-specific identifier (ID) transmitted from the receiver by transmitting the transmitter to a reception mode, and re-transmitting the identifier (ID) and the tire position signal to the receiver through a bidirectional RF antenna; Storing the identification code (ID) and the tire position signal transmitted from the transmitter to the receiver; Determining, by the receiver, whether all identification codes (ID) and tire position signals of all transmitters are stored; Automatically positioning the tire in the tire pressure monitoring system, characterized in that it comprises the step of continuously transmitting the RF signal containing the identification code (ID) unique to the tire according to the determination until the transmitter responds. How to set up. A plurality of wireless transmitters for detecting a tire pressure and wirelessly transmitting the pressure data and transmitting a unique identifier and a tire position signal when a tire-specific identifier is received according to a vehicle type; After receiving and demodulating and displaying the pressure data of the tires respectively transmitted from the plurality of transmitters in sequence, switching from the tire position setting mode to the transmission mode and transmitting a tire unique identifier according to the vehicle type, the tire unique A wireless receiver configured to reset the tire position by storing a unique identifier and a tire position signal of each of the wireless transmitters received in response to the identification code transmission of the wireless transmitter; And a display unit for displaying the plurality of tire pressure data demodulated by the tire position stored in the wireless receiving unit for the corresponding tire. The method of claim 2, The plurality of wireless transmitters, the pressure sensor for detecting the pressure, temperature, shaking of the tire, temperature sensor, rolling switch and; Receiving a tire detection signal detected from the pressure sensor and the temperature sensor and converts the tire-specific identification code (ID) and positioning data according to a preset vehicle type into a predetermined data format and outputs, the vehicle model transmitted from the wireless transmitter A transmitter MICOM for transmitting a unique identifier and a tire position signal stored in advance when the tire-specific identifier is received, Modulates the formatted data received from the microcomputer and transmits it wirelessly through the bidirectional RF antenna, receives a unique identifier of the tire according to the vehicle model transmitted by the wireless receiver through the bidirectional RF antenna, and outputs the output to the transmitter microcomputer. Automatic tire positioning device in the tire pressure monitoring system, characterized in that consisting of a transmitter RF transceiver. The method of claim 2, Each of the plurality of radio receivers receives data transmitted wirelessly from a transmitter, and transmits radio data including a tire-specific identifier according to the vehicle type in a transmission mode; A receiver RF transceiver for receiving, detecting and outputting wireless data received from the plurality of RF antennas, and transmitting tire identification symbols according to the vehicle type through corresponding bidirectional RF antennas; Receives the detected signal from the RF transceiver and compares the pressure and temperature data of the prescribed tire to generate an alarm control signal when the specified pressure and temperature data is exceeded, and controls to display respective tire pressure and temperature data. And switching from the tire position setting mode to a transmission mode to transmit a tire identifier according to the vehicle type through the RF transceiver and a two-way RF antenna, and from each of the wireless transmitters in response to the transmission of the tire identifier. Receiving unit MICOM (MICOM) for receiving and storing each unique identifier and tire position signal to reset the tire position, The tire auto-positioning device in the tire pressure monitoring system, characterized in that it is connected to the microcomputer (MICOM) and configured with a mode switching switch for setting a unique identifier (ID) and position according to the vehicle type.

Images