KR100962841B1 - Limp home operation maintenance system and method using telematics - Google Patents

Abstract

The present invention discloses a lymphatic groove operation maintaining system using telematics in a vehicle having an immobilizer function and a method of maintaining the same.

The lymphatic home operation maintenance system using the telematics of the present invention receives the lymphatic home maintenance information including the lymphatic home password from an external telematics server through wireless communication, and stores the lymphatic home password for a predetermined time, and stores the lymphatic home password when receiving a lymphhome password request signal. Telematics unit to provide; And an engine ECU that receives the lymphhome password by transmitting the lymphhome password request signal to the telematics unit when the immobilizer is broken, and permits the engine to start when the lymphhome password matches the previously registered lymphhome password. In addition, by allowing the lymphatic groove to be maintained for a certain period of time without the driver's direct lymphatic home password entry process, it is possible to minimize the discomfort of the operator in using the lymph groove function.

Description

Limp home operation maintenance system and method using telematics

1 is a block diagram showing the configuration of a general immobilizer system.

Figure 2 is a block diagram showing the configuration of a lymphatic home operation maintenance system using telematics according to the present invention.

3 is a configuration diagram showing in more detail the configuration of the telematics unit in FIG.

Figure 4 is a view showing a state in which a lymphatic home operation system using the telematics of the present invention is applied to a real vehicle.

Figure 5 is a flow chart for explaining the operation of the lymphatic home motion maintenance system using the telematics of the present invention.

Figure 6 is a flow chart illustrating a process of storing and managing data for maintaining the lymph groove operation in the telematics unit of the present invention.

The present invention relates to a limp home function of a vehicle, and more particularly, a lymphatic home password provided using a vehicle telematics and stored for a predetermined period of time, and a lymphatic home provided through a telematics during the corresponding period. The present invention relates to a limp home operation maintaining system and a method of maintaining the limp home password by allowing a driver to start a vehicle by using a password.

In general, an immobilizer system prevents theft of a vehicle by a third party by enabling the engine to start only when a key code transmitted wirelessly from the ignition key matches a previously stored password when the engine is started. The following system. In addition, the lymph groove is a function for temporarily starting to operate to the nearest repair shop when a problem occurs due to a failure of such an immobilizer system and a normal start does not occur.

1 is a configuration diagram showing the configuration of a general immobilizer system.

The starter key 10 is provided with a transponder 12 for generating a specific radio wave, and the key cylinder 20 has an antenna 22 for receiving the radio wave generated from the transponder 12 and transmitting it to the immobilizer 30. Is installed.

When the driver inserts the ignition key 10 into the key cylinder 20 and " on " the switching contact, the transponder 12 transmits the key code (password) via wireless communication using a specific frequency (12 kHz). The radio signal transmitted from the transponder 12 is received through the antenna 22 and applied to the immobilizer 30, and the immobilizer 30 transmits the received key code to the engine ECU (Electronic Control Unit) 40. .

The engine ECU 40 compares the key code received through the immobilizer 30 with a previously stored password to drive the engine only when the two values are the same.

In this conventional immobilizer system, when an abnormality occurs in the immobilizer 30 and the key code is not provided, the engine ECU 40 enters the limp home mode and is operated by directly operating the ignition key 10 from the driver until the vehicle is repaired. LIMP HOME password was entered to allow the vehicle to start. That is, when the driver performs a continuous " on " " off " Compared to the password, the engine was allowed to start even if the two values match.

However, the conventional limp home password input method has a problem that not only takes a lot of password input time but also has a lot of difficulty in inputting, making it inconvenient for drivers to use.

Therefore, an object of the present invention for solving the above-mentioned problems is to improve the input method of the lymph groove password when a fault occurs in the immobilizer to allow the driver to use the lymph groove function more conveniently and safely.

Lymphhome operation maintenance system using the telematics of the present invention for achieving the above object, receiving the lymphatic groove maintenance information including the lymphatic home password from the external telematics server through the wireless communication for a certain period of time and stores the lymphatic home password request signal Telematics unit for providing the stored lymphatic home password when received; And when the mobile device is broken, receiving the lymph home password by transmitting the lymphhome password request signal to the telematics unit, and allowing the engine to start when the lymphhome password provided matches the previously registered lymphhome password. An engine ECU is provided.

Lymphhome operation maintenance method using the telematics of the present invention comprises a first step of receiving the lymphatic groove maintenance information including the lymphatic home password via a wireless communication from a predetermined external telematics server for a certain period of time; A second step of determining whether the immobilizer is broken when a driver starts the engine; And a third step of starting the engine by using the lymphhome password provided in the first step during the lymphhome service maintenance day when the immobilizer fails.

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

Figure 2 is a block diagram showing the configuration of a lymphatic home operation maintenance system using telematics according to the present invention. In FIG. 2, components that perform the same functions as those of FIG. 1 will be described with the same reference numerals.

The lymphatic home operation maintenance system using the telematics of FIG. 2 includes an immobilizer 30, an engine ECU 50, and a telematics unit 60.

The immobilizer 30 operates when the driver inserts the ignition key 10 into the key cylinder 20 and rotates the key to supply power. At this time, the immobilizer 30 is started through the antenna coil 22 provided in the key cylinder 20. The key code transmitted from the transponder 12 embedded in the key 10 is received and then transmitted to the engine ECU 50.                     

When the immobilizer 30 receives the key code from the immobilizer 30 in the normal operation, the engine ECU 50 compares the key code with the registered password and drives the engine when the received key code matches the registered password. . However, when the immobilizer 30 does not operate normally and does not receive a key code from the immobilizer 30, the engine ECU 50 checks whether the password is stored in the telematics unit 60 and stores the password. In the case of receiving a password from the telematics unit 60 through a predetermined authentication process to drive the engine. That is, the engine ECU 50 does not immediately enter the lymphatic home mode when an abnormality occurs in the immobilizer 30, and first checks whether the lymphatic home password is stored in the telematics unit 60, and then, depending on whether the engine ECU 50 is stored in the lymphhome mode. It enters or receives a password from the telematics unit 60 to drive the engine.

The telematics unit 60 receives a variety of information required while driving the vehicle, such as a route guidance for a destination set during operation and traffic information on a road to be driven from a telematics server (not shown) installed in an external predetermined center using wireless communication. To the driver through the screen. In particular, the telematics unit 60 according to the present invention receives and stores lymphatic home maintenance information including a lymphatic home password from a telematics server (not shown) when the immobilizer 30 breaks down at a driver's request. When the request from the engine ECU 50 sends the stored lymphatic home password to the engine ECU 50, the limp home operation can be performed even if the driver does not directly enter the password using the ignition key 10. To make it work. In this case, as a method of receiving a lymphatic home password from a telematics server (not shown), the driver informs Mozen counselors of the lymphhome password and service period using a MOZEN service, and then the corresponding information (lymphhome). Maintenance information) is provided as a form of wireless communication data. The telematics unit 60 deletes the stored password when the specified period ends.

3 is a configuration diagram showing the configuration of the telematics unit 60 in FIG. 2 in more detail.

The telematics unit 60 includes an MTS antenna 61, a main CPU 62, a display unit 63, a navigation unit 64, an input unit 65, a communication interface unit 66, a sub CPU 67, and a memory ( 68, a clock generator 69, and a device authenticator 70.

The MTS antenna 61 receives data transmitted through wireless communication from an external telematics server (not shown).

The main CPU 62 controls the operation of the telematics unit 60 as a whole, and processes the data received through the MTS antenna 61 so that the driver can use the telematics service. In particular, the main CPU 62 of the present invention requests and receives the lymphatic home maintenance information from the telematics server (not shown) according to the driver's request through the Mogen service, and transmits it to the sub CPU 67.

The display unit 63 displays a navigation screen, a telematics service screen, and a limp home operation screen according to the present invention under the control of the main CPU 62.

The navigation unit 64 guides the driving route to the destination set by the driver and the traffic information on the road to be driven.                     

The input unit 65 is a user interface means having a plurality of input keys to input information necessary for the driver to use the telematics service. In particular, the input unit 65 is provided with a button for using the MOZEN service, so that the user can be connected to the counselor by pressing the corresponding button.

The communication interface 66 allows the sub CPU 67 to communicate with the engine ECU 50.

The sub CPU 67 receives the lymph groove password and the period information on the lymph groove password as the lymph groove maintenance information from the main CPU 62 and stores it in the memory 68 for a specified period, and generates the clock from the clock generator 69. The validity period is calculated using the clock, and the password stored in the memory 68 is deleted when the specified period ends. When the sub CPU 67 receives a request for providing a password from the engine ECU 50 through the communication interface 66, the sub CPU 67 transmits the corresponding password to the engine ECU 50 and displays the related information through the main CPU 62. This is shown in part 63.

The memory 68 stores period information on the lymphatic home password and the lymphhome password provided by the sub CPU 67 from the main CPU 62. Information stored at this time includes the date of receiving the lymphhome password from the telematics server (not shown) as shown in Table 1, the Lymphhome service period (password retention date) requested by the driver through the MOZEN agent, and the initial reception of the password. The elapsed date from one day, the limp home password of the vehicle the driver gave to the Mozen counselor.

Password received date Password retention date Password elapsed date Lymph Home Password Etc

At this time, the password retention date is cut and stored in units of days to reduce confusion of the driver. For example, if the driver asks to use the service for three days and the requested time is 10 am, the service does not end at 10 am three days after 72 hours elapsed from the request time, and the service is until 12 pm three days later. Make it available.

The clock generator 69 generates a clock of a predetermined period, calculates a time using the clock, and provides the sub CPU 67 with information about the current time. That is, in general, telematics may be provided with date and time information from a telematics server (not shown). However, when the lymphatic password retention period is calculated using the date and time information provided from the outside, the vehicle may be used by a vehicle taker. Since date and time information can be manipulated, a separate clock is generated internally for time calculation and the time and date are calculated through this.

The device authentication unit 70 is composed of an authentication chip for engine ECU authentication, and communicates with the engine ECU 50 before the lymphatic home password is transmitted from the sub CPU 67 to the engine ECU 50. The authentication procedure is performed so as to confirm whether or not the telematics is registered in the engine ECU 50. As such an authentication method, when using the immobilizer 30, authentication may be performed through mutual password verification in a manner similar to that performed by the transponder 12 of the ignition key 10. Of course, the authentication method is not limited to a specific method and may be performed by selecting any one of the authentication methods that are conventionally used.                     

4 is a view showing a state in which the lymphatic home operation system using the telematics of the present invention is applied to a real vehicle.

5 is a flow chart for explaining the operation of the lymphatic home operation maintenance system using the telematics of the present invention having the above-described configuration.

When the driver inserts the ignition key 10 into the key cylinder 20 and turns the ignition key 10 to the IGN “ON” position to start the ignition, the immobilizer 30 and the telematics unit 60 receive power. Driven.

The engine ECU 50 checks whether the immobilizer 30 has failed (step 511). That is, the engine ECU 50 determines that the immobilizer 30 is broken when the power is supplied but the key code for the start permission is not transmitted from the immobilizer 30 for a predetermined time.

When the engine ECU 50 determines that the immobilizer 30 is broken, the engine ECU 50 blinks the immobilizer lamp 5 times without immediately entering the limp home mode, and informs the driver that an abnormality of the immobilizer 30 occurs, and then the communication interface unit 66. Is transmitted to the sub CPU 67 to confirm whether the lymphhome password is stored (step 513).

Upon receiving the confirmation request signal, the sub CPU 67 checks whether or not the period information shown in Table 1 exists in the memory 68 (step 514).

If the period information exists, the sub CPU 67 compares the maintenance date with the elapsed date in the period information (step 515).

As a result of the comparison, if the maintenance date is greater than the elapsed date, the sub CPU 67 displays the request customer name, the function request date, the function end date, and the remaining valid days to the driver through the display unit 63, and the maintenance date has elapsed. If it is equal to the day, if the immobilizer 30 is not maintained until the requested customer name, the function request date, the function end date, the remaining valid days, and the requested period of time, problems may occur in the vehicle operation from the next day. Present the message to the driver (step 516).

However, as a result of the comparison in step 515, if the maintenance date is less than the elapsed date, it is again checked whether the maintenance date is within 2 days or more than 3 days after the password is deleted. As a result of the check, if the maintenance date has not elapsed two days since the password is deleted, the sub CPU 67 may not know the fact that the function is terminated or may not remember the fact. 63) to notify the end of the function. If the maintenance date is 3 days or more after the password is deleted, it is determined that the driver has sufficiently recognized that the function is terminated, and the sub CPU 67 deletes the period information without notifying the driver separately (step 517).

Next, the sub CPU 67 transmits, to the engine ECU 50, whether or not the password is stored (step 518). At this time, if the period information does not exist in step 514 and the maintenance date is less than the elapsed date in step 515, the password is not already stored in the memory 68, so that the sub CPU 67 does not store the password. Notifying the engine ECU 50, and notifying the engine ECU 50 that the password is stored when the maintenance date is greater than or equal to the elapsed date.

When the engine ECU 50 receives the notification that the password does not exist from the sub CPU 67 (step 519), the engine ECU 50 enters the lymph groove mode and waits for the lymph groove password input by operating the start key 10 (step). 520).

On the other hand, upon receiving notification that the password exists from the sub CPU 67 (step 519), the engine ECU 50 first authenticates whether the telematics unit 60 is a registered device before receiving the password. The authentication procedure is performed (step 521). That is, the engine ECU 50 communicates with the device authentication unit 70 to confirm whether or not the device is registered through a predetermined authentication procedure.

As a result of the authentication, when it is confirmed that the telematics unit 60 is not registered in the engine ECU 50, the engine ECU 50 is not authenticated and informs the driver that the corresponding function cannot be used, and then enters the lymph home mode. In step 522, the user enters the home password and enters the home password.

On the other hand, if authentication is normally completed, the engine ECU 50 requests the password transmission to the sub CPU 67 to receive the password (step 523).

The engine ECU 50 provided with the password compares the provided password with a previously stored password and checks whether there is a match (step 524).

As a result of the check, if the two passwords match, the engine ECU 50 turns on the immobilizer lamp to switch to the startable state (step 527).

On the other hand, when the two passwords do not match, the engine ECU 50 flashes the immobilizer lamp five times and notifies the driver that a password input error has occurred through the display unit 63. Then, the engine ECU 50 enters the limp home mode and waits for a limp home password input by operating the start key 10 (step 525).

Next, when the driver recognizes that the lymphatic motion using telematics is impossible through the message display, the driver returns to the initial state by rotating the ignition key to the IGN 'OFF' position. Otherwise, the ignition key is performed as in step 522. (10) The Lymp Home Password Input Waiting State is maintained by operation (Step 525).

6 is a flowchart illustrating a process of storing and managing data for maintaining lymphatic home operation in the telematics unit 60 of the present invention.

When the ignition key 10 returns to the IGN 'ON' position and power is supplied to the telematics unit 60, the main CPU 62 transmits information for providing a telematics service through the MTS antenna 61. (Step 611).

The main CPU 62 checks whether the received data is information for maintaining the lymphatic home function according to the present invention or information for providing another telematics service (step 612).

When the received data is information for maintaining the lymphatic home function, the received data is transmitted to the sub CPU 67, and the sub CPU 67 transmits the corresponding information (password reception date, password maintenance date, lymph home password). Is stored in the memory 68 (step 613).

Next, the sub CPU 67 checks the current time using the clock signal of the clock generator 69, and if the current time (receive time) is close to midnight, increases the day more than the day the driver requests the password retention date. The driver's confusion and complaints are resolved (step 614).

If the starter key 10 moves to the IGN 'OFF' position in step 615 (step 615), the telematics unit 60 is cut off from the power supply and the function is stopped (step 616). At this time, the telematics unit 60 includes an internal battery (not shown) to continuously check the clock signal of the clock generator 69 even if the power supplied from the outside is cut off to check the passage of time, and the time is midnight ( 00:00) (step 617), the elapsed date stored in the memory 68 is updated (step 618).

Even when the ignition key 10 does not move to the IGN 'OFF' position, the sub CPU 67 also checks the passage of time using the internal clock of the clock generator 69, and the time is midnight (00:00). If so (step 617), the elapsed day stored in the memory 68 is updated (step 618).

The sub CPU 67 continuously compares the maintenance date with the elapsed date, and if the maintenance date is greater than or equal to the elapsed date, i.e., if the service period requested by the customer has not yet elapsed, the operation time from step 617 is increased. The process is repeated (step 619).

In step 619, if the elapsed date is greater than the maintenance date, the sub CPU 67 deletes the lymphhome password stored in the memory 68 because the service period requested by the customer has passed (step 620). At this time, the period information is not immediately deleted and is further stored for a predetermined period as in step 517 of FIG. 5 to be used for providing the driver with relevant information through the screen.

As described above, the lymphatic home operation maintaining system using the telematics of the present invention is provided with the lymphatic home password stored in the wireless communication using the telematics, and then the lymphatic home operation can be maintained by using the lymphatic home for a certain period of time. The driver's inconvenience in using the home function can be minimized.

Claims (13)

In a system for driving an engine using an immobilizer function, A telematics unit receiving lymphatic home maintenance information including a lymphatic home password from an external telematics server through wireless communication and storing the lymphatic home password for a predetermined period of time, and providing the lymphatic home password stored when a lymphatic home password request signal is received; And When the immobilizer breaks down, it transmits the lymph home password request signal to the telematics unit to receive the lymph home password, and when the provided lymph home password matches the pre-registered lymph home password, the engine ECU allows the engine to start. Lymph groove operation maintenance system using a telematics provided. The method of claim 1, wherein the telematics unit Lymphhome operation maintenance system using a telematics, characterized in that receiving the lymphatic groove maintenance information using a Mogen service. The method of claim 2, wherein the lymphatic groove maintenance information is The lymphatic home password maintenance system using a telematics, characterized in that it comprises the lymph home password of the vehicle that the driver delivered to the Mozen counselor and the date of maintenance of the lymphhome password requested by the driver through the Mozen counselor. The method of claim 3, wherein the telematics unit When the maintenance date has elapsed, the stored lymphatic home password is first deleted, and when the lymphatic home password is deleted, a certain period of time after which the lymphatic home operation using the telematics characterized in that to delete the period information associated with the lymphatic home password Maintenance system. The method of claim 1 wherein the engine ECU is When the immobilizer is broken, first check whether the lymphatic home password is stored in the telematics unit, and if the lymphatic home password is stored, check whether the telematics unit is a registered device, and if the device is a registered device, the lymph Lymphhome operation maintenance system using a telematics, characterized in that for transmitting a home password request signal to the telematics unit. 6. The engine ECU of claim 5 wherein the engine ECU is When the lymphatic home password is not stored in the telematics unit or the telematics unit is not registered device, the lymphatic home operation maintenance system using the telematics, characterized in that the entry into the limp home password input standby mode using the ignition key. The method of claim 1, wherein the telematics unit An MTS antenna for receiving the lymphatic groove maintenance information from the telematics server through wireless communication; A main CPU which controls the operation of the telematics unit as a whole and transmits the lymph groove maintenance information received through the MTS antenna to a sub CPU; An input unit having a plurality of input keys to receive data for receiving the lymphatic groove maintenance information from a driver; A communication interface to enable data communication with the engine ECU; A sub-CPU receiving the lymph groove maintenance information from the main CPU and storing the lymph groove maintenance information in a memory and providing the stored lymph groove password when receiving the lymphhome password request signal from the engine ECU; And And a device authentication unit which communicates with the engine ECU and authenticates whether the telematics unit is registered with the engine ECU. The method of claim 7, wherein Further comprising a clock generator for generating a clock signal of a predetermined period, Lymph groove operation maintenance system using a telematics, characterized in that for managing the lymph groove maintenance information for the predetermined period by calculating the time and date according to the clock signal of the clock generator. The method of claim 8, wherein the sub CPU is Lymphhome operation maintenance system using a telematics, characterized in that for deleting the lymph home password stored in the memory when the period for requesting the service maintenance elapses by calculating the time and date using the clock signal. In the method for starting the engine using the immobilizer function, A first step of receiving lymphatic home maintenance information including a lymphatic home password through wireless communication from a predetermined external telematics server for a predetermined period of time; A second step of determining whether the immobilizer is broken when a driver starts the engine; And And a third step of starting an engine using the lymphhome password provided in the first step during the lymphhome service maintenance day when the immobilizer fails. The method of claim 10, And a fourth step of deleting the stored lymph home password when the service maintenance date has elapsed. 12. The method of claim 10 or 11, wherein the third step is The method for maintaining lymphatic home operation using telematics according to claim 1, wherein the engine ECU is allowed to start the engine when the two numbers match by comparing the previously registered password with the lymphatic home password provided in the first step. The method of claim 10, wherein the first step Using a Mozen service to inform the Mozen counselor lymph home password and service maintenance date, the lymphatic home operation maintenance method using a telematics, characterized in that receiving the lymphatic groove maintenance information in a certain format of wireless communication data.

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