KR101832278B1 - Method for diagnosing engine off timer - Google Patents

Method for diagnosing engine off timer Download PDF

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Publication number
KR101832278B1
KR101832278B1 KR1020110106557A KR20110106557A KR101832278B1 KR 101832278 B1 KR101832278 B1 KR 101832278B1 KR 1020110106557 A KR1020110106557 A KR 1020110106557A KR 20110106557 A KR20110106557 A KR 20110106557A KR 101832278 B1 KR101832278 B1 KR 101832278B1
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KR
South Korea
Prior art keywords
timer
engine
main controller
value
power
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KR1020110106557A
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Korean (ko)
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KR20130042317A (en
Inventor
이민수
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콘티넨탈 오토모티브 시스템 주식회사
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Priority to KR1020110106557A priority Critical patent/KR101832278B1/en
Publication of KR20130042317A publication Critical patent/KR20130042317A/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Abstract

The present invention discloses a method of diagnosing an engine off timer. The diagnostic method of the engine off timer according to the present invention is configured to diagnose the abnormality of the engine off timer built in the main controller which is the engine control device of the vehicle in the off state of the main controller. Therefore, the present invention is not limited to detecting an error on the communication line between the engine off-timer and the main controller, and can perform a check on the inherent function of the engine off-timer. The normal operation It is possible to determine whether or not the engine off timer is normally operated.

Description

METHOD FOR DIAGNOSING ENGINE OFF TIMER [0001]

The present invention relates to a method of diagnosing an engine off timer, and more particularly, to a method of diagnosing an engine off timer for diagnosing an abnormality of an engine off timer built in a main controller, ≪ / RTI >

Normally, the engine off timer in the vehicle performs a function of measuring the time from when the engine of the vehicle is turned off to how long the engine has been turned off.

Such an engine off timer is configured in the form of a small microcontroller or an independent IC element having the above-mentioned functions.

Further, it is possible to diagnose whether or not the engine off timer performing the above-mentioned function works normally during the period from when the driver completes the driving to the time when the key is pulled out from the vehicle and then the key is inserted again into the starter box for the next driving There is a prior art for this.

One such prior art technique involves passing a predetermined value on the SPI line to verify only the SPI communication line between the main controller, the engine off timer (i.e., implemented as a small microcontroller or IC device) If the latter receives the same value from the main controller, it verifies that there is no abnormality on the SPI line.

This method has a problem that it is only possible to detect the presence or absence of an error in the SPI line, and it can not be confirmed whether or not the inherent function of the engine off timer operates correctly.

Meanwhile, another conventional technique is to compare the increase of the engine off timer value during the normal operation with the increase of the internal timer value of the main controller. In this method, There is a disadvantage that it can not be judged.

In addition, all of the above-mentioned prior arts have a limitation that it is possible to determine whether or not the engine off timer is normally operated only when normal operation of the main controller is possible.

That is, when the operation of the main controller is impossible due to the fact that power is not supplied to the main controller, it is impossible to determine whether the engine off timer is normally operated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide an engine control system for diagnosing an abnormality of an engine off timer built in a main controller, And the engine off timer is provided with a function of controlling on / off of a power regulator that is responsible for supplying power to the main controller.

According to an aspect of the present invention, there is provided a method of diagnosing an engine off timer, the method comprising: a main controller configured to perform a wake-up operation to supply power to the main controller at a predetermined time interval when the main controller is powered off; Setting the engine off timer to the engine off timer and instructing the engine off timer to perform an operation for the wakeup setting; starting power supply to the main controller based on the time interval in the engine off timer; Reading the current timer value from the engine off timer after the main controller is reset to a power-on state, comparing the current timer value with a last stored timer value, and comparing the current timer value with the last stored timer value in the main controller One result And determining whether the engine off timer is abnormal by using the engine off timer.

Preferably, the method of diagnosing the engine off timer further includes the step of determining whether the engine off timer is abnormal in the main controller, storing the determination result, and re-executing the wakeup setting for the engine off timer .

Preferably, the method of diagnosing the engine off timer comprises the steps of: when the main controller operates in a normal mode in which the wakeup setting is not performed, when the main controller is powered off, And determining whether there is an abnormality in the engine off timer after the switching.

Preferably, the method of diagnosing the engine off timer includes determining whether the engine is turned off when the main controller is reset to a power-on state by power supply started from the engine off timer or by using an ignition key And when the determination is that the power supply is started from the engine off timer, the diagnosis process for the engine off timer is executed.

Preferably, the main controller determines that the operation of the engine off timer is normal if the current timer value is greater than a predetermined range from the last stored timer value.

Preferably, the main controller determines that the operation of the engine off timer is abnormal if the current timer value is not equal to or less than a predetermined range lower than the last stored timer value.

Preferably, the main controller and the engine off timer communicate through a serial to parallel interface (SPI) line.

Preferably, the engine off timer starts power supply to the main controller using a regulator control line.

Preferably, the wake-up setting of the main controller is executed at the time of storing the related data in the nonvolatile memory after the start-off.

The method of diagnosing the engine off timer may further include determining that the battery is detached if the current timer value is '0' in the main controller.

Therefore, in the present invention, in order to diagnose the abnormality of the engine off timer built in the main controller, which is the engine control device of the vehicle, in the off state of the main controller, a power regulator It is possible to perform a check on a unique function of the engine off timer not only to detect an error on a communication line between the engine off timer and the main controller, There is an advantage in that it is possible to determine whether or not the engine off timer is normally operated.

Brief Description of the Drawings Fig. 1 is a diagram showing a diagnostic system for an engine off timer according to an embodiment of the present invention,
FIG. 2 is a diagram showing an operation procedure for the diagnosis system of the engine off timer shown in FIG. 1 as one embodiment, and FIG.
FIG. 3 is a flowchart illustrating an operation of the engine off timer diagnostic system shown in FIG. 1 according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of a diagnostic system for an engine off timer 200 according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram showing a diagnostic system of an engine off timer 200 according to an embodiment of the present invention. 1, the diagnosis system of the engine off-timer 200 detects the abnormality of the engine off-timer 200, which is built in the main controller 100, which is the engine control device of the vehicle, The diagnosis is made in the off state.

That is, the diagnosis system of the engine off-timer 200 mainly includes a battery and an electronic control unit (ECU), and the main controller 100 in the electronic control unit is turned off (for example, So that the diagnosis of the engine off timer 200 is made.

Specifically, in the present invention, a function of performing ON / OFF control of a regulator for supplying power to the main controller 100 in addition to a function of measuring the time after the engine is stopped, which is the main function of the engine OFF timer 200, The abnormality of the engine off timer 200 can be checked even when the normal operation of the main controller 100 is impossible (e.g., the power supply is not being supplied).

In other words, the engine off timer 200 has a function to continuously increase the timer value while the power is continuously supplied even if the driver turns off the power and unlocks the key. It is impossible to count the timers through the main controller 100. Therefore, the engine off timer 200, which operates by directly supplying the vehicle power to the electronic control unit regardless of the presence or absence of the ignition key, To continue.

When the electronic control unit is detached from the vehicle, the engine off timer 200 is also disconnected from the power source, so that the timer counting function can not be performed. Accordingly, when the electronic control unit is attached to the vehicle again, The value can also be initialized.

In order to realize such a function (that is, a wake up function), it is performed based on the communication link between the main controller 100 and the engine off timer 200.

In other words, the main controller 100 executes a wakeup setting to cause the main controller 100 to be powered on the engine off timer 200 at a desired time interval in accordance with the engine stop time.

Thereafter, when the operation of the wake-up setting is instructed in the main controller 100, the engine off-timer 200 linked to the operation of the wake-up setting is operated in the wake- The switching control is performed.

That is, the engine off-timer 200 operates the switching control module for the regulator using the regulator control line, and determines whether or not the main controller 100 is powered.

FIG. 2 is a diagram illustrating an operation process of the engine off timer 200 shown in FIG. 1 for a diagnostic system according to an embodiment of the present invention. As shown by way of example only in FIG. 2, the method of diagnosing the engine off timer 200 is such that the main controller 100 performs the wakeup setting at a point of time when the engine stop is controlled (S100).

After the wake-up setting is performed so that power supply to the main controller 100 is performed at a predetermined time interval when the main controller 100 is powered off by the main controller 100 in step S100, And instructs the execution of the wake-up setting set in the wake-up control unit 200 (S102).

Thereafter, when the main controller 100 is powered off, the engine off timer 200 executes the wake-up function.

The engine off timer 200 performs control to supply power to the main controller 100 in a power-off state (S108) when a preset operation time comes through execution of the wake-up function (S106).

That is, the engine off-timer 200 executes the switching control for the regulator using the regulator communication line. It is possible to supply power to the main controller 100 through this.

Accordingly, the main controller 100 receives the power supplied through the battery and the regulator, and is reset to the power-on state (S110).

After the current timer value is read from the engine off timer 200, the main controller 100 determines whether the current timer value read from the engine off timer 200 corresponds to the sum of the last stored timer value and the wake up time The operation of the engine off timer 200 is determined to be normal (S112 to S116).

Here, the current timer value may be larger or smaller than a sum of the last stored timer value and the wake-up time (i.e., the time in the wakeup mode), and it is determined whether or not this portion is within a predetermined error range It is preferable to determine whether or not the operation of the engine off timer 200 is normal.

Thereafter, when the engine off timer 200 is normal, the main controller 100 stores the current timer value read from the engine off timer 200 (S118).

If the starting state of the vehicle is not switched to the on state, the above-mentioned processes are repeated (S120).

Further, when the current timer value is different from the sum of the last stored timer value and the wake up time (i.e., the time in the wakeup mode) (i.e., outside the above-mentioned error range) It is determined that there is an abnormality and the result is output (S124).

Thereafter, the processes for diagnosing the engine off-timer 200 are also ended when the start-up of the vehicle is turned on (S126).

FIG. 3 is a flowchart illustrating an operation of the engine off timer 200 shown in FIG. 1 according to another embodiment of the present invention. 3, when the main controller 100 is powered on and does not operate in the above-described wake-up mode (i.e., the normal mode), the diagnosis method of the engine off timer 200, , It proceeds to check whether the engine off timer 200 is normal during power off of the main controller 100 (S200 and S202).

That is, when the main controller 100 satisfies predetermined conditions to operate in the wake-up mode, the main controller 100 operates in the wake-up mode. Otherwise, the main controller 100 operates in the normal mode.

If it is determined in step S202 that the engine off timer 200 is normal (S204), the main controller 100 reads the current timer value from the engine off timer 200 and uses it as vehicle driving information (S204 to S208 ).

In this case, the engine off timer 200 is diagnosed (S210) because an engine stop situation may occur during the operation of the main controller 100. [

If the engine off timer 200 is determined to be normal in step S210, the main controller 100 reads the current timer value from the engine off timer 200 and uses the current timer value as vehicle driving information (S212 to S216).

Thereafter, when the vehicle start key is turned off, the value of the last engine off timer 200 that is read at this time is stored (S218 and S220).

On the other hand, if it is determined in step S204 that there is an abnormality in the engine off timer 200, the main controller 100 performs a processing function such as outputting a record of the abnormality to the engine off timer 200, Value is not utilized for system control (S222 and S224).

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims It can be understood that

Further, since the present invention is for diagnosing the abnormality of the engine off timer built in the main controller, which is the engine control device of the vehicle, in the off state of the main controller, the possibility of commercialization or sales is sufficient, This is an invention that is industrially usable because it is possible.

100: main controller 200: engine off timer

Claims (10)

The main controller executes a wake-up setting for the engine off timer so that power is supplied to the main controller at a predetermined time interval when the main controller is in the power off state, and the operation for the wake- Instructing a timer;
Starting power supply to the main controller based on the time interval in the engine off timer;
Reading the current timer value from the engine off timer after the main controller is reset to power on, and comparing the current timer value with a last stored timer value; And
And determining whether the engine off timer is abnormal using the result of comparing the current timer value and the last stored timer value in the main controller. The method according to claim 1,
The method for diagnosing the engine off timer further includes the steps of: determining whether the engine off timer is abnormal in the main controller, storing the determination result, and re-executing the wakeup setting for the engine off timer Of the engine off timer. The method according to claim 1,
Wherein when the main controller is operated in a normal mode in which the wake-up setting is not performed in the main controller, when the main controller is in a power-off state, Further comprising the step of determining whether the engine off timer is abnormal or not. The method according to claim 1,
The method further comprising the step of determining whether the engine off timer is caused by a power supply started from the engine off timer or by starting by using an ignition key when the main controller is reset to a power on state,
And when the determination is that the power supply is started from the engine off timer, the diagnosis process for the engine off timer is executed. 5. The method according to any one of claims 1 to 4,
Wherein the main controller determines that the operation of the engine off timer is normal if the current timer value is greater than the last stored timer value by a value within a predetermined range. 5. The method according to any one of claims 1 to 4,
Wherein the main controller determines that there is an abnormality in the operation of the engine off timer if the current timer value is larger than the last stored timer value by a value out of a predetermined range. 5. The method according to any one of claims 1 to 4,
Wherein the main controller and the engine off timer communicate via an SPI (Serial to Parallel Interface) line. 5. The method according to any one of claims 1 to 4,
Wherein the engine off timer starts power supply to the main controller using a regulator control line. 5. The method according to any one of claims 1 to 4,
Wherein the wake-up setting of the main controller is executed at the time of storing the related data in the nonvolatile memory after the start-off. 5. The method according to any one of claims 1 to 4,
Further comprising the step of determining that the battery has been removed if the current timer value is " 0 " in the main controller.
KR1020110106557A 2011-10-18 2011-10-18 Method for diagnosing engine off timer KR101832278B1 (en)

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Publication number Priority date Publication date Assignee Title
KR102335532B1 (en) * 2017-09-12 2021-12-03 현대자동차주식회사 Fault diagnosis of timer for engine off time monitoring
KR102420666B1 (en) 2017-12-21 2022-07-14 현대자동차주식회사 Vehicle and engine off timer diagnosis method thereof
KR102364080B1 (en) * 2021-10-20 2022-02-16 비테스코 테크놀로지스 게엠베하 Apparatus for calibrating and fault diagnosis of vehicle timer and method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005023843A (en) 2003-07-02 2005-01-27 Toyota Motor Corp Abnormality diagnostic device for automatic start timer circuit
JP2005301615A (en) 2004-04-09 2005-10-27 Denso Corp Electronic control apparatus equipped with soak timer
JP2010176541A (en) 2009-01-30 2010-08-12 Hitachi Automotive Systems Ltd Electronic control device for vehicle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005023843A (en) 2003-07-02 2005-01-27 Toyota Motor Corp Abnormality diagnostic device for automatic start timer circuit
JP2005301615A (en) 2004-04-09 2005-10-27 Denso Corp Electronic control apparatus equipped with soak timer
JP2010176541A (en) 2009-01-30 2010-08-12 Hitachi Automotive Systems Ltd Electronic control device for vehicle

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