KR102364080B1 - Apparatus for calibrating and fault diagnosis of vehicle timer and method thereof - Google Patents

Abstract

The present invention relates to an apparatus for calibration and diagnosis of a timer for a vehicle, comprising: a control unit of a controller which integrates and controls functions of the hybrid vehicle; and a power drive unit which applies power to the control unit to wake up the same. The power drive unit has a timer therein, and when a wake-up time set on the timer is reached, applies power to the control unit to wake up the same. The control unit sets the wake-up time on the timer based on real time clock (RTC) information and specified default wake-up time information. The apparatus calibrates the timer and diagnoses a failure by using the RTC information of an external device.

Description

Apparatus and method for calibration and fault diagnosis of vehicle timer

The present invention relates to an apparatus and method for calibrating and diagnosing a vehicle timer, and more particularly, to a controller of a plug-in hybrid electric vehicle (PHEV) in real time with a relatively simple and inexpensive timer. It replaces expensive RTC (Real Time Clock) because it can time time, and uses RTC information of an external device (AVN, Audio Video Navigation) to correct the timer and diagnose a malfunction. It relates to an apparatus and method for correcting a timer and diagnosing a malfunction.

In general, a plug-in hybrid electric vehicle (PHEV) (or hybrid vehicle) is a vehicle in which the battery can be recharged by connecting to an external power source and also through an onboard engine and generator.

The plug-in hybrid electric vehicle (PHEV) includes an engine control unit (ECU) for engine control and a hybrid control unit (HCU) for hybrid control.

Here, the engine controller (ECU) includes a plurality of timers (eg, Engine Off Timer, Power Off Timer, Wake up Time, etc.) for measuring the time when the engine is turned off. In addition, the hybrid controller (HCU) includes a Real Time Clock (RTC) for controlling a relay for supplying power for reserved charging of the vehicle.

In this case, the RTC is a device that can time time in real time in terms of function compared to the timer and is relatively expensive.

Meanwhile, a plurality of controllers (eg, ECU, HCU, Charging Control Unit, etc.) included in the plug-in hybrid electric vehicle (PHEV) may be implemented as one integrated controller in order to reduce unit cost. Therefore, hereinafter, the plurality of controllers or Note that the integrated controller may only be referred to as a controller.

When the integrated controller is implemented, a plurality of timers exist according to each function in the function of the existing engine control unit (ECU) and the hybrid controller (HCU). Therefore, in order to increase the efficiency of the integrated control device, it is necessary to use a single timer to design according to the function of each control device.

In addition, research is being conducted to use only the timer after removing the RTC from the controller, and even if only the timer is used, the same controller functions as before (eg, temperature modeling of engine control unit, reserved charging function of hybrid controller or charge controller, calendar function) etc.) is a situation that requires technology to operate normally. In addition, although the diagnosis of the function for reserved charging was not important in the past, a diagnosis function for preventing charging at an undesired time is also required.

The background technology of the present invention is disclosed in Korean Patent Application Laid-Open No. 10-1998-034747 (published on Aug. 5, 1998, a method for controlling car audio having a timer function).

According to one aspect of the present invention, the present invention was created to solve the above problems, and the controller of a plug-in hybrid electric vehicle (PHEV) has a relatively simple function and includes only a cheap timer and an expensive RTC ( Real Time Clock), using RTC information of an external device (AVN) to correct the timer and diagnose a failure it has its purpose

According to an aspect of the present invention, there is provided an apparatus for correcting and diagnosing a malfunction of a vehicle timer; and a power driving unit for waking up by applying power to the control unit, wherein the power driving unit has a built-in timer, and when the wake-up time set in the timer is reached, power is applied to the control unit to wake up, The control unit sets a wakeup time to the timer based on Real Time Clock (RTC) information and specified default wakeup time information, and after waking up, the current wakeup time and the default wakeup time are not the same In this case, it is characterized in that a corrected wake-up time is set in the timer.

In the present invention, the timer starts time counting after the wake-up time is set, and outputs the time count value to the wake-up controller.

In the present invention, the wake-up time means a time set in the timer to wake-up by applying power to the controller when the time count is finished, and a time count value counted by the timer corresponding to the actual time characterized in that it corresponds to

In the present invention, the default wake-up time means information about the actual time that the controller needs to wake up and execute a specified function, and is set directly by the user through an external device connected through CAN communication, or in the vehicle manufacturing stage. It can be set as a default, and it is characterized in that it can be set in plurality according to the function to be executed.

In the present invention, the control unit communicates with a designated external device to receive RTC (Real Time Clock) information, wherein the external device includes an AVN (Audio Video Navigation) device or an infotainment system. do.

In the present invention, when the current wake-up time is not the default wake-up time after the wake-up, the controller sets a corrected wake-up time to the timer, and the number of corrections for the wake-up time for the timer is It is characterized in that a diagnostic error is output when it exceeds a specified threshold.

In the present invention, in the wake-up state, the controller sets a wake-up time in the timer based on the default wake-up time and RTC information and then sleeps, and when waking up by the timer, RTC from a designated external device Receive information, receive time count information from the timer, and when the current time when waking up is not the same as the default wake-up time within an error range, based on the RTC information and the default wake-up time information and calculating a corrected wake-up time to be set in the timer, setting the calculated corrected wake-up time in the timer, and then sleeping.

In the present invention, the controller calculates the remaining time from the wake-up time to the default wake-up time, and sets the wake-up time in the timer before waking up until the current wake-up time. Calculates the elapsed time of , calculates a time count value per minute from the elapsed time corresponding to the time count value output from the timer, and multiplies the time count per minute corresponding to the remaining time to calculate a corrected wakeup time characterized in that

In the present invention, the control unit counts the number of corrections when setting the corrected wake-up time in the timer, and when the correction number of the wake-up time for the timer is greater than or equal to a specified threshold, at least one of a timer or RTC of an external device It is characterized by diagnosing that there is an error, outputting a diagnostic error and preventing charging at an undesired time.

According to another aspect of the present invention, there is provided a method for correcting and diagnosing a malfunction of a vehicle timer, comprising: a controller of a controller that integrates and controls functions of a hybrid vehicle; and a power driving unit having a built-in timer and waking up by applying power to the control unit; setting a wake-up time in the timer based on default wake-up time information; when the wake-up time set in the timer comes, the power driving unit applies power to the control unit to wake up; and setting, by the controller, a corrected wake-up time in the timer when the current wake-up time and the default wake-up time are not the same after the controller wakes up.

In the present invention, in the step of setting the wake-up time in the timer, the timer starts time counting after the wake-up time is set, and outputs the time count value to the wake-up controller.

In the present invention, the wake-up time means a time set in the timer to wake-up by applying power to the controller when the time count is finished, and a time count value counted by the timer corresponding to the actual time characterized in that it corresponds to

In the present invention, the default wake-up time means information about the actual time that the controller needs to wake up and execute a specified function, and is set directly by the user through an external device connected through CAN communication, or in the vehicle manufacturing stage. It can be set as a default, and it is characterized in that it can be set in plurality according to the function to be executed.

In the present invention, in the step of setting the wake-up time in the timer, the controller receives Real Time Clock (RTC) information by communicating with a designated external device, wherein the external device is an AVN (Audio Video Navigation) device or It is characterized in that it includes an infotainment system (Infotainment System).

In the present invention, after the step of setting the corrected wake-up time in the timer, the control unit, outputting a diagnostic error when the number of corrections of the wake-up time for the timer is greater than or equal to a specified threshold; characterized in that

In the present invention, in the step of setting the corrected wake-up time in the timer, the control unit, when waking up, receiving RTC information from a designated external device, and receiving time count information from the timer; calculating a corrected wake-up time to be set in the timer based on the RTC information and the default wake-up time information when the current time when waking up is not the same as the default wake-up time within an error range; and setting the calculated corrected wake-up time in the timer and then sleeping.

In the present invention, in the step of calculating the corrected wake-up time to be set in the timer, the control unit calculates the remaining time from the wake-up time to the default wake-up time, and returns the time to the timer before waking up. Calculates the elapsed time from the set wake-up time to the current wake-up, calculates a time count value per minute from the elapsed time corresponding to the time count value output from the timer, and corresponds to the remaining time It is characterized in that the corrected wake-up time is calculated by multiplying the time count value per minute.

In the present invention, in the step of setting the calculated corrected wake-up time to the timer and then sleeping, the controller may include: counting the number of corrections when setting the corrected wake-up time in the timer; and outputting a diagnostic error by diagnosing that there is an error in at least one of a timer or an RTC of an external device when the number of corrections of the wake-up time for the timer is greater than or equal to a specified threshold.

According to one aspect of the present invention, after configuring the controller of a plug-in hybrid electric vehicle (PHEV) to include only a relatively simple and inexpensive timer and not to include a relatively expensive RTC (Real Time Clock), , by using the RTC information of the external device (AVN), the timer is corrected and a failure can be diagnosed.

1 is an exemplary diagram illustrating a schematic configuration of an apparatus for correcting a vehicle timer and diagnosing a malfunction according to an embodiment of the present invention;
2 is a flowchart illustrating a method for correcting a vehicle timer according to an embodiment of the present invention.
3 is a flowchart illustrating a method for diagnosing a failure of a vehicle timer in FIG. 2 ;

Hereinafter, an embodiment of an apparatus and method for correcting a timer for a vehicle and diagnosing a malfunction according to the present invention will be described with reference to the accompanying drawings.

In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of the user or operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

The present invention includes a relatively inexpensive timer instead of implementing a function that the controller of a plug-in hybrid electric vehicle (PHEV) previously performed using RTC, and uses the timer and RTC information of an external device (AVN). In order to implement the previously performed functions (eg, temperature modeling, reserved charging function, calendar function, etc.), the timer is corrected and a failure can be diagnosed.

As already described above, a plurality of controllers (eg, ECU, HCU, VCU, etc.) included in the plug-in hybrid electric vehicle (PHEV) may be implemented as one integrated controller, and therefore, hereinafter, the plurality of controllers or the integrated controller Note that can only be described as a controller (or control unit).

1 is an exemplary diagram illustrating a schematic configuration of an apparatus for correcting a vehicle timer and diagnosing a malfunction according to an embodiment of the present invention.

As shown in FIG. 1 , the apparatus 100 for correcting and diagnosing a malfunction of a vehicle timer according to the present embodiment may be referred to as a controller (or an integrated controller), and a power driving unit 110 and a control unit 120 (eg, : MICOM).

And the key input unit (Key) means the ignition key.

The power driving unit 110 has a built-in timer, and when the wake up time set in the timer comes, power is applied to the control unit 120 to wake up. .

Also, the timer starts counting the time after the wake-up time is set, and outputs the time count value to the controller 120 .

For example, the time count does not mean time (ie, hours, minutes, seconds), but means a count value corresponding to a specified time (eg, a count value 100 corresponding to 10 minutes), for example, wake up When 10 minutes is set as the time, the time count starts to count up from 0 based on the timer's internal clock and ends when it reaches 100 (or starts counting down from 100 and becomes 0).

The controller 120 stores the default wake-up time information in an internal memory (not shown).

Here, the default wake-up time information refers to actual time information that needs to wake up and execute a specified function (eg, temperature modeling, reserved charging function, calendar function, etc.). The default wake-up time information may be directly set by a user through a key (eg, a touch key, a button, etc.) of the external device 210 connected through CAN communication, or may be set as a default in the vehicle manufacturing stage. In addition, a plurality of the default wake-up time information may be set according to a function to be executed.

Also, the controller 120 may receive Real Time Clock (RTC) information by communicating with an external device 210 (eg, AVN, infotainment system) using a designated communication method (eg, CAN communication).

In addition, the controller 120 may set a wake-up time in the timer, and in consideration of the decrease in accuracy of the timer, a corrected wake-up time based on the RTC information. By calculating, the wake-up time may be reset in the timer.

In addition, when resetting the corrected wakeup time in the timer, the controller 120 may count the number of resets (that is, the number of corrections of the wakeup time for the timer), and if the reset number is specified When the threshold is exceeded, a diagnostic error (ie, an alarm indicating that there is an error in at least one of a timer or RTC of an external device) is output to prevent charging at an undesired time or to allow maintenance.

For example, you may have made a reservation to charge during a time when electricity rates are low, but if you charge at an unwanted time, you may have to pay high electricity rates. At this time, an error may be output, and the user may reset and use the RTC of the AVN, or display a method for correcting a malfunction.

Hereinafter, the operation of the control unit 120 will be described with reference to the flowcharts of FIGS. 2 to 3 .

FIG. 2 is a flowchart illustrating a method of correcting a vehicle timer according to an embodiment of the present invention, and FIG. 3 is a flowchart illustrating a failure diagnosis method of a vehicle timer in FIG. 2 .

Referring to FIG. 2 , in the wake-up state, the controller 120 sets a wake-up time in a timer based on the default wake-up time and RTC information (RTC information received from an external device) and then goes to sleep ( S101).

Here, the wake-up time refers to a time for waking up by applying power to the control unit 120 when the time count is terminated after being set in a timer. That is, the wake-up time means a time count value counted by the timer corresponding to the actual time. For example, assuming a timer whose time count value corresponding to 10 minutes is 100, when 30 minutes is set as the wake-up time, when the time count value of 300 is counted, power is supplied to the controller 120 to wake up. .

In addition, the default wake-up time refers to actual time information for which a specified function (eg, temperature modeling, reserved charging function, calendar function, etc.) must be executed after being woken up. In this case, the default wake-up time information may be directly set by the user through the external device 210 connected through CAN communication, or may be set as a default in the vehicle manufacturing stage. In addition, a plurality of the default wake-up time information may be set according to a function to be executed.

Accordingly, when the timer wakes up the controller 120, that is, when a wakeup occurs by the timer (Yes in S102), the controller 120 controls the external device 210 (eg, AVN). , receives RTC information from the Infotainment System, and receives time count information (ie, time count value) from the timer (S103).

In addition, the controller 120 compares the received RTC information, the time count information, and the default wakeup time information stored in an internal memory (not shown) (S105).

By comparing the RTC information, the time count information, and the default wake-up time information, the controller 120 sets the wake-up time in the timer before waking up until the current wake-up. can calculate the elapsed time of , and also calculate the remaining time from the current wake-up time to the default wake-up time.

Also, based on the received RTC information, the controller 120 checks whether the current wake-up time is the same as the default wake-up time within an error range (eg, ±10 seconds) (S105).

Accordingly, if the current wake-up time is the same as the default wake-up time and within an error range (eg, ± 10 seconds) (Yes in S105), the controller 120 controls the function (eg, temperature) specified in the wake-up state. modeling, reservation charging function, calendar function, etc.) (S109).

However, if the current wake-up time is not the same as the default wake-up time and within an error range (eg, ± 10 seconds) (No in S105), the controller 120 controls the RTC information and the default wake-up time information based on the to calculate a corrected wake-up time to be set in the timer (S106).

For example, the controller 120 calculates the remaining time (eg, 10 minutes) from the current wake-up time to the default wake-up time, and sets the wake-up time in the timer before waking up. Calculate the elapsed time (eg 30 minutes) from the time to the current wake-up, and from the elapsed time (eg 30 minutes) corresponding to the time count value (eg 400) output from the timer After calculating the time count value per minute, the corrected wake-up time corresponding to the remaining time (eg, 10 minutes) (ie, as a time count value corresponding to 10 minutes, time count value per minute * 10 minutes) is calculated do.

When the corrected wake-up time is calculated as described above, the controller 120 sets the calculated corrected wake-up time in the timer and then goes to sleep (S107).

At this time, when a correction wake-up time is set in the timer, the control unit 120 counts the number of corrections (S108).

Counting the number of corrections as described above is for diagnosing whether there is an error in at least one of a timer or RTC of an external device.

Referring to FIG. 3 , the control unit 120 checks the number of corrections (that is, the number of corrections of wake-up time for the timer) (S201), and when the number of corrections is equal to or greater than a specified threshold (Yes in S202), the timer Alternatively, it is diagnosed that there is an error in at least one of the RTCs of the external device and a diagnostic error is output (S203).

When the diagnostic error is output as described above, the user (driver) can maintain the vehicle.

As described above, in the present embodiment, the controller of the plug-in hybrid electric vehicle (PHEV) is configured to include only a relatively cheap timer and not include an expensive RTC (Real Time Clock), and then the external device (AVN, Infotainment System) There is an effect of correcting the timer and diagnosing a failure by using the RTC information.

As described above, the present invention has been described with reference to the embodiment shown in the drawings, but this is merely exemplary, and various modifications and equivalent other embodiments are possible therefrom by those skilled in the art to which the art pertains. will understand the point. Therefore, the technical protection scope of the present invention should be defined by the following claims. Implementations described herein may also be implemented as, for example, a method or process, an apparatus, a software program, a data stream, or a signal. Although discussed only in the context of a single form of implementation (eg, discussed only as a method), implementations of the discussed features may also be implemented in other forms (eg, as an apparatus or program). The apparatus may be implemented in suitable hardware, software and firmware, and the like. A method may be implemented in an apparatus such as, for example, a processor, which generally refers to a computer, a microprocessor, a processing device, including an integrated circuit or programmable logic device, and the like. Processors also include communication devices such as computers, cell phones, portable/personal digital assistants (“PDA”) and other devices that facilitate communication of information between end-users.

100: Calibration and fault diagnosis device for vehicle timer
110: power driving unit
120: control unit
210: external device
Key : key input part

Claims (18)

a control unit of a controller that integrates and controls functions of the hybrid vehicle; and
and a power driving unit for waking up by applying power to the control unit;
The power driving unit,
A timer is built in, and when the wake-up time set in the timer comes, power is applied to the control unit to wake up,
The control unit is
A wakeup time is set in the timer based on RTC (Real Time Clock) information and specified default wakeup time information. After waking up, if the current wakeup time and the default wakeup time are not the same, the timer Calibration and fault diagnosis device for a vehicle timer, characterized in that setting a corrected wake-up time in the .
The method of claim 1, wherein the timer comprises:
Start counting time after wakeup time is set,
A device for correcting and diagnosing a vehicle timer, characterized in that outputting a time count value to a wake-up controller.
According to claim 1, wherein the wake-up time,
Calibration of the timer for a vehicle, which is set in the timer and refers to a time for waking up by applying power to the control unit when the time count is finished, which corresponds to a time count value counted by the timer in response to the actual time and fault diagnosis devices.
The method of claim 1, wherein the default wake-up time is:
As meaning the actual time information that the control unit needs to wake up and execute a specified function,
A device for calibrating and diagnosing a malfunction of a timer for a vehicle, characterized in that it may be set directly by the user through an external device connected through CAN communication, or may be set as a default in the vehicle manufacturing stage, and may be set in plurality according to a function to be executed.
According to claim 1, wherein the control unit,
Receive RTC (Real Time Clock) information by communicating with a specified external device,
The external device is an audio video navigation (AVN) device or an infotainment system (Infotainment System).
According to claim 1, wherein the control unit,
After waking up, if the current wake-up time is not the default wake-up time, a corrected wake-up time is set in the timer,
The apparatus for correcting and diagnosing a vehicle timer, characterized in that outputting a diagnosis error when the number of corrections of the wake-up time for the timer is greater than or equal to a specified threshold.
According to claim 1, wherein the control unit,
In the wake-up state, the wake-up time is set in the timer based on the default wake-up time and RTC information and then sleeps,
When waking up by the timer, RTC information is received from a designated external device, and time count information is received from the timer,
If the current time when waking up is not the same as the default wake-up time within an error range, calculating a corrected wake-up time to be set in the timer based on the RTC information and the default wake-up time information,
The apparatus for correcting and diagnosing a malfunction of a timer for a vehicle, characterized in that it sleeps after setting the calculated corrected wake-up time in the timer.
According to claim 7, wherein the control unit,
Calculating the remaining time from the wake-up time to the default wake-up time, and calculating the elapsed time from the time the wake-up time is set in the timer before the wake-up to the current wake-up time,
Timer for vehicle, characterized in that calculating a time count value per minute from the elapsed time corresponding to the time count value output from the timer, and multiplying the time count value per minute corresponding to the remaining time to calculate a corrected wakeup time of calibration and troubleshooting devices.
According to claim 7, wherein the control unit,
When the compensation wake-up time is set in the timer, the number of corrections is counted. If the number of corrections of the wake-up time for the timer is greater than or equal to a specified threshold, it is diagnosed that there is an error in at least one of the timer or the RTC of an external device. Calibration and fault diagnosis device for a vehicle timer, characterized in that it outputs and prevents charging at an undesired time.
a control unit of a controller that integrates and controls functions of the hybrid vehicle; And a built-in timer and a power driving unit for waking up by applying power to the control unit;
setting, by the controller, a wake-up time in the timer based on Real Time Clock (RTC) information and designated default wake-up time information;
when the wake-up time set in the timer comes, the power driving unit applies power to the control unit to wake up; and
After the controller wakes up, if the current wakeup time and the default wakeup time are not the same, setting a corrected wakeup time in the timer method.
The method of claim 10, wherein in the step of setting a wake-up time in the timer,
The timer is
Start counting time after wakeup time is set,
A method for correcting and diagnosing a malfunction of a vehicle timer, characterized in that outputting a time count value to a wake-up controller.
11. The method of claim 10, wherein the wake-up time,
Calibration of the timer for a vehicle, which is set in the timer and refers to a time for waking up by applying power to the control unit when the time count is finished, which corresponds to a time count value counted by the timer in response to the actual time and fault diagnosis methods.
The method of claim 10, wherein the default wake-up time is:
As meaning the actual time information that the control unit needs to wake up and execute a specified function,
A method of calibrating and diagnosing a malfunction of a timer for a vehicle, characterized in that it may be set directly by a user through an external device connected through CAN communication, or may be set as a default in the vehicle manufacturing stage, and may be set in plurality according to a function to be executed.
The method of claim 10, wherein in the step of setting a wake-up time in the timer,
The control unit is
Receive RTC (Real Time Clock) information by communicating with a specified external device,
The external device is an audio video navigation (AVN) device or an infotainment system (Infotainment System).
11. The method of claim 10,
After setting a corrected wake-up time in the timer,
The control unit is
Outputting a diagnosis error when the number of corrections of the wake-up time for the timer is greater than or equal to a specified threshold.
11. The method of claim 10,
In the step of setting a corrected wake-up time to the timer,
The control unit is
receiving RTC information from a designated external device when waking up, and receiving time count information from the timer;
calculating a corrected wake-up time to be set in the timer based on the RTC information and the default wake-up time information when the current time when waking up is not the same as the default wake-up time within an error range; and
and setting the calculated corrected wake-up time in the timer and then sleeping.
17. The method of claim 16,
In the step of calculating the corrected wake-up time to be set in the timer,
The control unit is
Calculating the remaining time from the wake-up time to the default wake-up time, and calculating the elapsed time from the time the wake-up time is set in the timer before the wake-up to the current wake-up time,
Timer for vehicle, characterized in that calculating a time count value per minute from the elapsed time corresponding to the time count value output from the timer, and multiplying the time count value per minute corresponding to the remaining time to calculate a corrected wakeup time of calibration and troubleshooting methods.
The method of claim 16, wherein in the step of setting the calculated corrected wake-up time to the timer and then sleeping,
The control unit is
counting the number of corrections when a correction wake-up time is set in the timer; and
and outputting a diagnostic error by diagnosing that there is an error in at least one of a timer or an RTC of an external device when the number of corrections of the wake-up time for the timer is greater than or equal to a specified threshold. and fault diagnosis methods.

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