KR101693885B1 - Device and method for diagnosis dark current generating electronic unit - Google Patents

Abstract

The present invention relates to an apparatus and a method for diagnosing a dark current generating unit using can communication in which a dark current generating electronic unit such as a body, a chassis, a multimedia control module, etc. of a vehicle can be easily diagnosed will be.
That is, the present invention monitors a can communication state in a slip state after a start-off after connecting a body, a chassis, a multimedia control module, etc. of the vehicle with a smart junction box and a network based on a can communication, And a method of diagnosing a dark current generating unit using a can communication in which a chassis, an electronic module for multimedia control, etc., can be easily diagnosed whether or not a fault has occurred.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a device and a method for diagnosing a dark current generating unit using a can communication,

The present invention relates to an apparatus and method for diagnosing a dark current generating unit using can communication, and more particularly, to a method and apparatus for diagnosing a dark current generating unit such as a body, a chassis, a multimedia control module of a vehicle, And more particularly, to a device and method for diagnosing a dark current generating unit using a can communication.

A controller for controlling various electronic modules mounted on an automobile, that is, various electric devices, is provided with a battery (B +) power source (constant power source) in a key off state for the purpose of data recording, periodic status check, Continuously supplied.

At this time, the current consumed by various electronic modules in the key off state is referred to as a dark current, and since the dark current is not started, power is supplied from the battery and consumed as described above.

Therefore, the lower the consumption of the dark current, the better the engine startability and the life of the battery. In view of this, a series of developments and attempts to reduce the dark current minimize the dark current consumed in each electronic module. Nevertheless, Excessive dark current may occur due to unexpected failure and abnormal operation of the module.

In particular, as a vehicle is advanced and electronic technologies are developed, many electronic modules are mounted. CAN communication is used for exchanging information between the electronic modules, and each electronic module connected by CAN (Master) to monitor the operation status of different electronic modules.

As a result of monitoring the operation states of different electronic modules using can communication, if one electronic module fails to enter a sleep state due to a problem (malfunction or abnormal operation), other electronic modules are interlocked So that it is impossible to enter the sleep state, and consequently, many dark currents are generated.

As an example for reducing the dark current, a system for automatically shutting off an electrical load using a switching device after a certain period of time has elapsed after the start-up of a vehicle has been applied, but this has a drawback in that it is impossible to detect a fault related to a dark current for an electronic module.

As another example for reducing the dark current, there is a method of sequentially determining the battery state through a battery sensor or the like to block the electrical load. However, if the determination condition for blocking the dark current is a sleep of the entire electronic module, And there is a disadvantage in that it is impossible to diagnose an electronic module which malfunctions or operates abnormally.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a smart junction box and a can communication-based network that connect a body, a chassis, The present invention provides an apparatus and method for diagnosing a dark current generation unit using can communication that can easily diagnose whether or not a dark current generation unit such as a body, a chassis, an electronic module for multimedia control, etc. of a vehicle has failed due to an excessive dark current It has its purpose.

According to another aspect of the present invention, there is provided an electronic device, comprising: a body can module for inspecting a plurality of body control electronic modules; A chassis can module that is embedded in a plurality of chassis control electronic modules for can communication confirmation; A multimedia can module that is embedded in a plurality of multimedia control electronic modules for can communication confirmation; A local switch for detecting whether the door and the luggage compartment lid are open or closed; A smart junction box connected to the body can module, the chassis can module, and the multimedia can module so as to be able to transmit and receive the electronic module for chassis control and the failure diagnosis and power off logic for the electronic control module for multimedia control; The apparatus for diagnosing a dark current generating unit using can communication is provided.

In one embodiment of the present invention, the smart junction box comprises: a body can transceiver coupled to be able to communicate with a plurality of body can modules; A chassis can transceiver connected to the plurality of chassis can modules so as to be able to communicate with each other; A multimedia can transceiver connected to the plurality of multimedia can modules so as to be able to communicate with each other; A local switch input module for receiving a switching signal of a local switch; An MCU performing fault diagnosis and power down logic; A switching module for shutting off power to each electronic module load group according to an instruction of the MCU; . ≪ / RTI >

According to another aspect of the present invention, there is provided a vehicular drive system including: a slip condition determining step of determining a start-off state of a vehicle and an off state of a local switch; Diagnosing a current operation state of the chassis can module and the multimedia can module including the body can module connected to the can communication network from the smart junction box when the slip condition is satisfied; Determining whether the chassis control electronic module and the multimedia control electronic module including the body control electronic module fail, based on the diagnosis result; The present invention provides a method of diagnosing a dark current generating unit using can communication.

In another embodiment of the present invention, the diagnosis and failure determination of the body control electronic module may include: a process of the electronic control module for body control entering a slip state; Monitoring a current operation state of a plurality of body can modules connected to the can communication network in the smart junction box and determining whether a communication frame connected to each body can module operates; Determining whether a slip signal is activated in a communication frame in operation when a specific communication frame connected to each body can module operates; Determining that an electronic module for body control having a body can module connected to an active communication frame consumes a large amount of dark current and has failed if a slip signal is activated in an active communication frame; .

In another embodiment of the present invention, the diagnosis and failure determination of the multimedia control electronic module may include: a step of the electronic control module for multimedia control entering a sleep state; Monitoring a current operation state of a plurality of multimedia can modules connected to the can communication network through the smart junction box and determining whether a communication frame connected to each multimedia can module operates; Determining whether a burst signal is activated in a communication frame in operation when a specific communication frame connected to each multimedia can module operates; Determining that an electronic module for multimedia control having a multimedia can module connected to an active communication frame consumes a large amount of dark current and has failed if a slip signal is activated in an active communication frame; .

In another embodiment of the present invention, the diagnosis and failure determination of the electronic module for chassis control may include: a step of the electronic module for chassis control entering a slip state; Monitoring a current operation state of a plurality of chassis can modules connected to the can communication network in the smart junction box and determining whether a can message is received from each chassis can module; Shutting down power to an electronic module for chassis control having a chassis can module that transmits a can message; A step of determining that the electronic module for chassis control having the chassis can module that transmits the can message consume a large amount of dark current and has failed; .

Through the above-mentioned means for solving the problems, the present invention provides the following effects.

According to the present invention, by incorporating a communication module capable of communicating with the electronic control module for multimedia control and the electronic control module for chassis control, including the body control electronic module mounted on the vehicle, and monitoring each communication module in a state satisfying the slip condition, The electronic module in which the dark current is generated can be easily found.

Also, by determining and recording the electronic module consuming excessive dark current as a failure, it is possible to present the ground data for blocking the dark current and to utilize it as data for improving the dark current generation unit, and to determine which electronic module Can be clearly understood and can provide ease of maintenance.

1 is a configuration diagram showing a dark current generating unit diagnostic apparatus using can communication according to the present invention;
2 is a flowchart illustrating a method of diagnosing a dark current generating unit using can communication according to the present invention,
3 is a flowchart for explaining a diagnostic method for an electronic module for body control in a dark current generating unit diagnostic method using can communication according to the present invention,
4 is a flowchart illustrating a diagnostic method for an electronic module for multimedia control among the dark current generating unit diagnostic method using can communication according to the present invention.
5 is a flowchart for explaining a diagnostic method for an electronic module for chassis control in a dark current generating unit diagnostic method using can communication according to the present invention.

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

The present invention monitors a can communication state of various electronic modules of a vehicle, that is, CAN, and communicates with various controllers, and diagnoses and diagnoses a controller that generates excessive dark current. .

To this end, a can communication module is embedded in various electronic modules of a vehicle, and a can communication module is connected to a smart junction box (a smart junction box) which controls a kind of can communication module and controls power cut- .

More specifically, as shown in FIG. 1, a body can module 12 for can communication is built in an electronic module for controlling each body (electric side mirror, power window, etc.) of a vehicle, and each chassis (suspension, (For example, an AVN system including navigation, audio, and the like), and a multimedia can module (not shown) for can communication with the electronic module for controlling each multimedia (16) so as to be communicably connected to the smart junction box (10).

At this time, a local switch 18 for detecting whether the doors and the luggage compartment lid are open or closed is also communicably connected to the smart junction box 10.

The smart junction box 10 is connected to the body can module 12, the chassis can module 14 and the multimedia can module 16 via can communication so as to be able to transmit and receive electronic modules for body control, The fault diagnosis and the power-off logic according to the dark current are performed for the multimedia control electronic module.

The configuration of the smart junction box 10 having such a function includes a body can transceiver 22 connected to a plurality of body can modules 12 so as to be able to communicate with each other and a can communicate with a plurality of the chassis can modules 14 A multichannel can transceiver 26 connected to the multimedia can module 16 so as to communicate with the plurality of multimedia can modules 16 and a local switch input module (not shown) for receiving the switching signal of the local switch 18 28).

Particularly, the smart junction box 10 includes a result of monitoring the body can module 12 from the body can transceiver 22, a result of monitoring the chassis can module 14 from the chassis can transceiver 24, An MCU 20 for performing a fault diagnosis and a power-off logic by a dark current on an electronic module for body control, an electronic module for chassis control, and an electronic module for multimedia control, based on the result of monitoring the multimedia can module 16 from the transceiver 26 ).

The smart junction box 10 is also connected to the smart junction box 10 by shutting off the battery 30 power supply to each electronic module load group (body control electronic module, chassis control electronic module, multimedia control electronic module, etc.) A switching module 29 is included.

Hereinafter, a method for diagnosing a dark current generating unit using can communication according to the present invention based on the above configuration will be described with reference to FIG.

First, it is determined whether or not each electronic module enters the slip state in the MCU 20 built in the smart junction box 10.

That is, it is determined whether or not the chassis control electronic module including the body control electronic module and the multimedia control electronic module enter the slip state. When the vehicle is turned off and the local switch 18 indicating the closed state of the door and the trunk lid is turned off It is determined that each electronic module has entered the slip state.

At this time, when the chassis control electronic module and the multimedia control electronic module including the body control electronic module enter the slip state, the chassis control electronic module including the body control electronic module and the multimedia control electronic modules are disconnected from the battery 30 The power supply is always supplied.

Of course, the power supplied from the battery for maintaining the memory is also the dark current, but if the dark current for maintaining the memory is consumed in each of the electronic modules, excessive dark current is generated.

According to the present invention, when the slipping condition of each electronic module is satisfied, the chassis can module 14 and the multimedia can module 16 (including the body can module 12 connected to the can communication network in the smart junction box 10) The electronic control module for chassis control and the electronic control module for multimedia control including the electronic control module for body control based on the monitoring result are judged to be faulty due to the dark current and recorded.

Hereinafter, referring to FIG. 3, which is a diagnosis and failure determination process for an electronic module for body control, will be described.

First, it is determined whether or not the body control electronic module has entered the slip state (S101).

That is, when the vehicle is turned off and the local switch 18 indicating the closed state of the door and the luggage compartment lid is in the OFF state, the electronic control module for body control enters the slip state in the MCU 20 of the smart junction box 10 .

If it is determined that the body control electronic module has entered the slip state, the MCU 20 of the smart junction box 10 monitors the current operation state of the body control electronic module through the can communication (S102).

More specifically, the current operation state of the body can module 12, which is incorporated in each of the plurality of body can modules 12 connected to the can communication network in the smart junction box 10, that is, the plurality of body control electronic modules, , And determines whether a communication frame connected to each body can module 12 operates (S103).

Next, it is determined whether a communication frame connected to the body can module 12, that is, a communication frame of the can network connected between the body can module 12 and the body can transceiver 22, is operating, , The MCU 20 of the smart junction box 10 determines whether a slip signal is activated in a communication frame currently being operated (S104).

If a burst signal is activated while a communication frame connected to the specific body can module 12 among the body can modules 12 contained in the plurality of body control electronic modules is activated, Because the electronic control module for body control consumes a large amount of dark current.

In other words, if the body control electronic module having the specific body can module 12 is continuously maintained in the slip state, there is no slip signal in the communication frame connected to the specific body can module 12, The body control electronic module having the specific body can module 12 consumes a large amount of the dark current, so that the body control electronic module having the specific body can module 12 is operated in the abnormal state It can be judged that it is operating or broken.

Therefore, the result of the determination that the body control electronic module having the specific body can module 12 is abnormal or malfunction is recorded in the MCU 20 of the smart junction box 10 (S105).

Finally, after confirming whether all the body can modules 12 have been subjected to the above-described series of diagnostic procedures (S106), the diagnostic and failure determination process for the electronic module for body control is terminated.

Hereinafter, referring to FIG. 4, which is a diagnosis and failure judgment process for an electronic module for multimedia control, the following will be described.

First, it is determined whether the multimedia control electronic module has entered the slip state (S201).

That is, when the vehicle is turned off and the local switch 18 indicating the closed state of the door and the trunk lid is in the off state, the multimedia control electronic module enters the slip state in the MCU 20 of the smart junction box 10 .

If it is determined that the multimedia control electronic module has entered the sleep state, the MCU 20 of the smart junction box 10 monitors the current operation state of the multimedia control electronic module through the can communication (S202).

More specifically, the current operation state of the multimedia can module 12, which is embedded in each of the plurality of multimedia can modules 12 connected to the can communication network in the smart junction box 10, , And determines whether or not a communication frame connected to each multimedia can module 12 operates (S203).

Next, it is determined whether a communication frame connected to the multimedia can module 12, that is, a communication frame of the can network connected between the multimedia can module 12 and the multimedia can transceiver 22, is operating, , The MCU 20 of the smart junction box 10 determines whether a slip signal is activated in a communication frame currently being operated (S204).

At this time, if the communication frame connected to the specific multimedia can module 12 among the multimedia can modules 12 incorporated in the plurality of multimedia control electronic modules is activated and the spill signal is activated, Because the electronic module for multimedia control consumes a large amount of dark current.

In other words, if the multimedia control electronic module having the specific multimedia can module 12 is continuously maintained in the slip state, there is no slip signal in the communication frame connected to the specific multimedia can module 12, but the specific multimedia can module 12 The multimedia control electronic module having the specific multimedia can module 12 consumes a large amount of the dark current. Therefore, if the multimedia control electronic module having the specific multimedia can module 12 is abnormal It can be judged that it is operating or broken.

Accordingly, the result of the determination that the multimedia control electronic module having the specific multimedia can module 12 is abnormal or malfunctioning is recorded in the MCU 20 of the smart junction box 10 (S205).

Finally, after checking whether all the multimedia can modules 12 have been subjected to the above-described series of diagnostic procedures (S206), the diagnosis and failure determination process for the multimedia control electronic module is terminated.

Hereinafter, referring to FIG. 5, which is a diagnosis and failure judgment process for an electronic module for chassis control, will be described.

First, it is determined whether or not the electronic control module for chassis control has entered the slip state (S301).

That is, when the vehicle is turned off and the local switch 18 indicating the closed state of the door and the luggage compartment lid is off, the electronic control module for chassis control enters the slip state in the MCU 20 of the smart junction box 10 .

If it is determined that the electronic module for chassis control has entered the slip state, the MCU 20 of the smart junction box 10 monitors the current operation state of the electronic module for chassis control through can communication (S302).

Next, the current operation state of the plurality of chassis can modules 14 is monitored, and it is determined whether a can message is received from each chassis can module 14 (S303).

At this time, the electronic control module for chassis control does not have a plurality of communication frames in the can network due to its characteristics. Therefore, it can directly receive the can message from the chassis can module 14 mounted on the electronic module for chassis control without monitoring the operation state of the communication frame .

That is, when the MCU 20 of the smart junction box 10 receives the can message from the specific chassis can module 14, the chassis control electronic module having the specified chassis can module 14 is in the bis-lipped state The power supply to the electronic module for chassis control having the specific chassis can module 14 is cut off.

In other words, the switching module 29 operates according to the command of the MCU 20 to shut off the power of the battery 30 supplied to the chassis control electronic module having the specific chassis can module 14 (S304).

Then, it is checked whether a can message is received from the chassis can module 14 mounted on another chassis control electronic module, that is, whether it is in a non-sleep state in which a can message is received or in a slip state in which a can message is not received (S305) .

Finally, the electronic control module for chassis control having the specific chassis can module 14 that has transmitted the CAN message as described above is determined to have failed due to a large amount of dark current, and the result is recorded in the MCU 20 of the smart junction box 10 (S306).

In this way, a communication module capable of communicating with the electronic control module for multimedia control and the electronic control module for chassis control, as well as the body control electronic module mounted on the vehicle, is built in, and the electronic module consuming excessive dark current can be accurately grasped .

10: Smart Junction Box
12: Body can module
14: Chassis can module
16: Multimedia can module
18: Local switch
20: MCU
22: Body can transceiver
24: chassis can transceiver
26: Multimedia cans transceiver
28: Local switch input module
29: Switching module
30: Battery

Claims (6)

delete delete A slip condition judging step of confirming a start-off state of the vehicle and an off state of the local switch;
Diagnosing the current operation state of the chassis can module 14 and the multimedia can module 16, including the body can module 12 connected to the can communication network in the smart junction box 10, when the slip condition is satisfied;
Determining whether the chassis control electronic module and the multimedia control electronic module including the body control electronic module fail, based on the diagnosis result;
Wherein the dark current generation unit diagnosis method comprises:
The method of claim 3,
The diagnosis and failure determination of the electronic module for body control may be made by:
A process in which the body control electronic module enters a slip state;
Monitoring a current operation state of a plurality of body can modules (12) connected to the can communication network in the smart junction box (10), and determining whether a communication frame connected to each body can module (12) operates;
Determining whether a slip signal is activated in a communication frame in operation when a specific communication frame connected to each body can module 12 is operated;
Determining that a body control electronic module having a body can module (12) connected to an active communication frame consumes a large amount of dark current and has failed if a slip signal is activated in an active communication frame;
Wherein the dark current generation unit diagnosis method comprises:
The method of claim 3,
The diagnosis and failure determination of the multimedia control electronic module may include:
A process in which the multimedia control electronic module enters a slip state;
Monitoring a current operation state of a plurality of multimedia can modules (16) connected to the can communication network in the smart junction box (10), and determining whether a communication frame connected to each of the multimedia can modules (16) is operating;
Determining whether a burst signal is activated in a communication frame in operation when a specific communication frame connected to each multimedia can module 16 is operated;
Determining that an electronic module for multimedia control having a multimedia can module (16) connected to an active communication frame consumes a large amount of dark current and has failed if a slip signal is activated in an active communication frame;
Wherein the dark current generation unit diagnosis method comprises:
The method of claim 3,
The diagnosis and failure determination of the electronic module for chassis control may be made by:
A process in which an electronic module for chassis control enters a slip state;
Monitoring a current operation state of a plurality of chassis can modules (14) connected to the can communication network in the smart junction box (10) and determining whether a can message is received from each chassis can module (14);
Shutting off power to an electronic module for chassis control having a chassis can module (14) which transmits a can message;
Determining that the electronic module for chassis control having the chassis can module (14) which has transmitted the can message consume a large amount of dark current and is malfunctioning;
Wherein the dark current generation unit diagnosis method comprises:

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