KR102443076B1 - Vehicle, electronic control device and electronic control device control method - Google Patents

Abstract

One aspect of the disclosed invention provides an electronic control device and a method for controlling an electronic control device capable of preventing malfunction of the electronic control device by checking a short-circuit state of the ground portion of the electronic control device using a simple resistance element.
An electronic control device according to an embodiment includes: a first ground unit connected to a power source and connected to a first current terminal for supplying a first current to an electronic control unit (ECU);
a second ground unit connected to the power source and connected to a second current terminal for supplying a second current to the electronic control device;
a short circuit resistor connecting the first ground part and the second ground part; and
and a controller configured to determine whether at least one of the first grounding unit and the second grounding unit is short-circuited based on the magnitude of the diagnostic current flowing through the short-circuit resistor.

Description

VEHICLE, ELECTRONIC CONTROL UNIT AND METHOD OF CONTROLLING THE ELECTRONIC CONTROL UNIT

The published invention relates to an electronic control device and a method for controlling the electronic control device, and to a technology capable of preventing malfunction of the electronic control device.

An electronic control unit is a processor that controls various components provided in a vehicle based on various electrical signals within the vehicle.

In the case of electronic control devices that drive valves and motors, two current supply parts and two ground parts are used to prevent the inflow of current capacity of wiring and connectors and noise from the driving device.

On the other hand, when an error occurs in the operation of at least one of the two grounding units, a voltage drop occurs due to the resistance of wires and connectors provided in each of the grounding units.

In addition, in this case, the current supplied to the electronic control device is concentrated in one current supply unit, so that the size of the available current of the electronic control device is exceeded, so that the electronic control device cannot operate normally.

In order to solve this problem, research on detecting a malfunction of a circuit constituting an electronic control device is continued, but research on a technology for determining a short-circuit state of the ground part is insufficient.

One aspect of the disclosed invention provides an electronic control device and a method for controlling an electronic control device capable of preventing malfunction of the electronic control device by checking a short-circuit state of the ground portion of the electronic control device using a simple resistance element.

An electronic control device according to an embodiment includes: a first ground unit connected to a power source and connected to a first current terminal for supplying a first current to an electronic control unit (ECU); a second ground unit connected to the power source and connected to a second current terminal for supplying a second current to the electronic control device;

a short circuit resistor connecting the first ground part and the second ground part; and a control unit configured to determine whether at least one of the first grounding unit and the second grounding unit is short-circuited based on the magnitude of the diagnostic current flowing through the short-circuit resistance.

The control unit obtains a magnitude of the diagnostic current flowing through the short circuit resistor, compares magnitudes of the first and second currents with magnitudes of the diagnostic current, and compares magnitudes of the diagnostic currents with the magnitudes of the first and second grounding parts. At least one short circuit can be determined.

The control unit obtains the magnitude of the diagnostic current flowing through the short circuit resistor, calculates a difference between the magnitude of the first current or the second current and the magnitude of the diagnostic current, and when the difference is less than or equal to a predetermined value, At least one of the first grounding part and the second grounding part may be determined to be in a short circuit state.

The electronic control device according to an embodiment further includes a sensor unit configured to obtain a short-circuit voltage between the first grounding unit and the second grounding unit,

The controller may calculate the diagnosis current based on the short-circuit voltage.

When it is determined that at least one of the first grounding unit and the second grounding unit is short-circuited, the controller may reduce the magnitudes of the first current and the second current to predetermined values.

The controller may generate a warning signal when it is determined that at least one of the first grounding unit and the second grounding unit is short-circuited.

In an electronic control device control method according to an embodiment, a first current is supplied to an electronic control unit (ECU) by being connected to a power source, a second current is supplied to the electronic control device by being connected to the power supply, and the first current is supplied to the electronic control unit (ECU). Determining whether at least one of the first grounding part and the second grounding part is short-circuited based on the magnitude of a diagnostic current flowing through a short circuit resistor connecting the first grounding part through which the current flows and the second grounding part through which the second current flows includes doing

Determining whether at least one of the first grounding unit and the second grounding unit is short-circuited may include obtaining the magnitude of the diagnostic current flowing through the short-circuit resistance, and determining the magnitude of the first current and the second current and the diagnosis. It may include determining whether at least one of the first grounding part and the second grounding part is shorted by comparing the magnitude of the current.

Determining whether at least one of the first grounding unit and the second grounding unit is short-circuited may include obtaining the magnitude of the diagnostic current flowing through the short-circuit resistance, and determining the magnitude of the first current or the second current and the diagnosis. and calculating a difference in the magnitude of the current, and when the difference is less than or equal to a predetermined value, determining that at least one of the first grounding unit and the second grounding unit is in a short-circuit state.

The first ground portion is connected to a first resistor,

The second ground portion is connected to a second resistor,

Determining whether at least one of the first ground unit and the second ground unit is shorted may include calculating the diagnosis current based on the first resistance, the second resistance, the first current, and the second current. may include

The method for controlling an electronic control device according to an embodiment further comprises obtaining a short-circuit voltage between the first grounding part and the second grounding part,

Determining whether at least one of the first grounding unit and the second grounding unit is short-circuited may include calculating the diagnosis current based on the short-circuit voltage.

An electronic device control method according to an embodiment,

The method may further include reducing the magnitudes of the first current and the second current to predetermined values when it is determined that at least one of the first grounding part and the second grounding part is short-circuited.

The method for controlling an electronic device according to an embodiment may further include generating a warning signal when it is determined that at least one of the first grounding unit and the second grounding unit is short-circuited.

A vehicle according to an embodiment includes a power supply for supplying current; an output unit for outputting an operating state of an electronic control device driven by receiving a first current and a second current from the power source; and an electronic control device that is driven by receiving the first current and the second current from the power source and outputs a warning message to the output unit when at least one part of a circuit constituting the electronic control device is in a short circuit state. and a first grounding part connected to a first current terminal connected to the power supply and supplying a first current to the electronic control device; a second ground unit connected to the power source and connected to a second current terminal for supplying a second current to the electronic control device; a short circuit resistor connecting the first ground part and the second ground part; and a control unit configured to determine whether at least one of the first grounding unit and the second grounding unit is short-circuited based on the magnitude of the diagnostic current flowing through the short-circuit resistance.

According to an electronic control device and a method for controlling an electronic control device according to an aspect, a malfunction of the electronic control device can be prevented by checking a short circuit state of the ground portion of the electronic control device using a simple resistance element.

1 is an external view of a vehicle according to an embodiment of the present invention.
2 is an external view of the front of a vehicle according to an embodiment of the present invention.
3 is a control block diagram according to an embodiment of the present invention.
4 is a circuit diagram of an electronic control device according to an embodiment of the present invention.
5 is a circuit diagram of an electronic control device for controlling an amount of current according to an embodiment of the present invention.
6 illustrates output of a warning message according to an embodiment of the present invention.
7 is a flowchart according to an embodiment of the present invention.

Like reference numerals refer to like elements throughout. This specification does not describe all elements of the embodiments, and general content in the technical field to which the present invention pertains or content that overlaps between the embodiments is omitted. The term 'part, module, member, block' used in the specification may be implemented in software or hardware, and according to embodiments, a plurality of 'part, module, member, block' may be implemented as a single component, It is also possible for one 'part, module, member, block' to include a plurality of components.

Throughout the specification, when a part is "connected" with another part, this includes not only direct connection but also indirect connection, and indirect connection includes connection through a wireless communication network. do.

Also, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

Throughout the specification, when a member is said to be located "on" another member, this includes not only a case in which a member is in contact with another member but also a case in which another member exists between the two members.

Terms such as first, second, etc. are used to distinguish one component from another, and the component is not limited by the above-mentioned terms.

The singular expression includes the plural expression unless the context clearly dictates otherwise.

In each step, the identification code is used for convenience of description, and the identification code does not describe the order of each step, and each step may be performed differently from the specified order unless the specific order is clearly stated in the context. have.

Hereinafter, the working principle and embodiments of the present invention will be described with reference to the accompanying drawings.

1 is an external view of a vehicle according to an embodiment of the present invention.

Referring to FIG. 1 , a vehicle 1 includes a vehicle body 2 forming an exterior of the vehicle 1 , and wheels 13 and 14 for moving the vehicle 1 . The vehicle body 2 includes a hood 3 , a front fender 4 , a door 5 , a trunk lid 6 , a quarter panel 7 , and the like.

In addition, a front window 8 installed on the front side of the vehicle body 2 to provide a view in front of the vehicle 1, a side window 9 providing a side view, and a door 5 are installed outside the vehicle body 2 ) installed on the side mirrors 11 and 12 to provide a view of the rear and side of the vehicle 1, and a rear window 10 installed on the rear side of the vehicle body 2 to provide a view of the rear of the vehicle 1 can be provided.

The wheels 13 and 14 include a front wheel 13 provided at the front of the vehicle and a rear wheel 14 provided at the rear of the vehicle. It provides rotational force to the front wheel 13 or the rear wheel 14 . Such a driving device may employ an engine for generating rotational force by burning fossil fuel or a motor for generating rotational force by receiving power from a capacitor.

2 is an internal structural diagram of a vehicle according to an embodiment of the present invention.

Referring to FIG. 2 , the interior of the vehicle 1 includes a seat 20 on which an occupant sits, a dashboard 33, and a tachometer, a speedometer, a coolant thermometer, a fuel gauge, a turn indicator, and a high beam. Indicator lights, warning lights, seat belt warning lights, odometer, odometer, automatic shift selector light, door open warning light, engine oil warning light, low fuel warning light are arranged on the instrument panel (i.e. cluster 30), and It includes a steering wheel 31 , a center fascia 35 on which a vent and a control plate of the air conditioner are disposed and an audio device is disposed.

Meanwhile, the center console 37 may be provided with a jog shuttle type or a hard key type center input unit. The center console 37 is positioned between the driver's seat 21 and the front passenger's seat 22 to mean a portion where the gear operation lever 38 and the tray 40 are formed.

The seat 20 includes a driver's seat 21 on which the driver sits, an auxiliary seat 22 on which a passenger sits, and a rear seat located at the rear of the vehicle.

The cluster 30 may be implemented digitally. That is, the digital cluster 30 displays vehicle information and driving information as images.

The center fascia 35 is a portion of the dashboard 33 positioned between the driver's seat 21 and the passenger seat 22 , and a vent, a cigar jack, etc. may be installed in the center fascia 35 .

An AVN device (Audio Video Navigation, 121) may be provided inside the vehicle 1 . The AVN device 121 refers to a terminal capable of providing a navigation function that provides a route to a destination to a user, as well as providing an audio and video function in an integrated manner.

The AVN device 121 may selectively display at least one of an audio screen, a video screen, and a navigation screen through the display 120 , and may also display a screen related to an additional function related to the control of the vehicle 1 . have.

Meanwhile, the display 120 may be located in the center fascia 35 that is the central area of the dashboard 33 . According to an embodiment, the display 120 may be implemented as a liquid crystal display (LCD), a light emitting diode (LED), a plasma display panel (PDP), an organic light emitting diode (OLED), a cathode ray tube (CRT), etc. can, but is not limited thereto.

The center console 37 may be provided with a center input unit 39 of a jog shuttle type or a hard key type. The center input unit 39 may perform all or some functions of the AVN device 121 .

3 is a control block diagram of a vehicle according to an embodiment of the present invention.

Referring to FIG. 3 , a vehicle according to an exemplary embodiment may include a power source 200 , an electronic control device 100 , and an output unit 300 .

The power source 200 may produce electric energy and supply electric energy to elements constituting the vehicle. The power source 200 may supply current to the electronic control device 100 . The power source 200 may supply the power source 200 to the electronic control device 100 through at least one path, but in FIG. 3 , the current is supplied through the first current terminal 101 and the second current terminal 102 . can do.

The electronic control device 100 may include a control unit 106 , a sensor unit 105 , and a short circuit resistor 104 . The first current terminal 101 , the second current terminal 102 , the first ground unit 401 and the second ground unit 402 shown in FIG. 3 are at least a part of a circuit constituting the electronic control device 100 . is intended to refer to

The current generated from the power source 200 may be supplied to the electronic control device 100 through the first current terminal 101 , or may be supplied to the electronic control device 100 through the second current terminal 102 . . The electronic control device 100 may include a circuit driven by receiving a current from the first current terminal 101 and a circuit 103 driven by receiving a current from the second current terminal 102 , the circuit 103 ) may include a first ground portion 401 corresponding to the first current terminal 101 and a second ground portion 402 corresponding to the second current terminal 102 .

Specifically, the first current supplied through the first current terminal 101 may drive the circuit 103 connected to the first current terminal 101 and flow to the first ground unit 401, and the second The second current supplied through the current terminal may drive the circuit 103 connected to the second current terminal 102 and flow to the second ground unit 402 .

The sensor unit 105 may acquire the magnitude of a short-circuit voltage that is a voltage between the first ground unit 401 and the second ground unit 402 . Also, the sensor unit 105 may acquire the voltage of the short circuit resistor 104 provided between the first grounding unit 401 and the second grounding unit 402 . In addition, according to an embodiment, the sensor unit 105 may include an operational amplifier (OP-amp), and amplify the voltage between the first ground unit 401 and the second ground unit 402 to obtain a value of the short-circuit voltage. can be obtained.

The first ground portion 401 and the second ground portion 402 are ground portions through which the first current and the second current supplied from the first current terminal 101 and the second current terminal 102, respectively, flow. The first grounding unit 401 and the second grounding unit 402 may be connected to the substrate provided with the electronic control device 100 to form a ground and serve as a voltage reference. The first grounding unit 401 and the second grounding unit 402 may include a wiring resistance component due to wiring and a resistance component due to a connector on the board.

The short circuit resistor 104 may be provided between the first grounding part 401 and the second grounding part 402 . The short-circuit resistor 104 may be provided to derive a short-circuit voltage between the first grounding unit 401 and the second grounding unit 402, and may be used to derive a short-circuit current based on the short-circuit voltage as will be described later. can According to an exemplary embodiment of the present invention, the short-circuit resistance 104 may be provided with a resistance of 1 mΩ or less.

The controller 106 may determine whether the first grounding unit 401 or the second grounding unit 402 is shorted based on the magnitude of the diagnostic current flowing through the short circuit resistor 104 .

The diagnostic current is a current flowing through the above-described short-circuit resistor 104 and is a current capable of determining the short-circuit state of the first grounding unit 401 and the second grounding unit 402 . The diagnostic current may be derived by the control unit 106 as a resistance value provided in the electronic control device 100 . In addition, the control unit 106 may derive a diagnostic current based on the short-circuit voltage and the short-circuit resistance 104 value obtained by the sensor unit 105 as described above and below. The controller 106 may determine the short-circuit state of at least one of the first grounding unit 401 and the second grounding unit 402 based on the magnitude of the diagnostic current. Specifically, the controller 106 may derive a difference between the magnitude of the diagnostic current and the magnitude of the first or second current, and when the difference is less than or equal to a value predetermined by the user, the first grounding unit 401 and the second grounding unit It can be determined that at least one of (402) is short-circuited. For example, a normal operation is that a current of 1A is supplied through the first current terminal 101 and a current of 1A flows through the second current terminal 102 , and the first contact connected to the first current terminal 101 is When the branch 401 is short-circuited, 2A may flow through the second current terminal 102 . In a normal case, the circuit connected to the second current terminal 102 is designed so that a current of 1A flows, so when a current of 2A flows in the circuit connected to the second current terminal 102, the circuit connected to the second current terminal 102 Too much current flows in the circuit, making it difficult for the current control device to operate normally.

Meanwhile, when it is determined that at least one of the first grounding unit 401 and the second grounding unit 402 is short-circuited, the control unit 106 may generate a warning signal. Furthermore, the electronic control device 100 may output a warning signal to the output unit 300 provided in the vehicle based on the formed warning signal.

Also, in this case, the controller 106 may adjust the amount of current supplied from the power source 200 . In the above-described example, when the first ground unit 401 is short-circuited and a current of 2A flows in the circuit connected to the second current terminal 102, the control unit 106 controls the circuit connected to the second current terminal 102 of 1A. It is also possible to control the flow of current. Controlling the amount of current connected to the first current terminal 101 and the second current terminal 102 by the control unit 106 is a technique that is obvious to those skilled in the art, such as using a current distribution law, detailed description will be omitted. .

Meanwhile, the vehicle may further include an output unit 300 . The output unit 300 may output a warning message when an error occurs in the circuit operation constituting the electronic control device 100 as described above. According to an embodiment, the output unit 300 may be implemented as a display that the user can visually recognize, or a speaker that the user can recognize aurally, and the user can use the electronic control device 100 . As long as it is a means that can detect a malfunction, the type and implementation form are not limited.

At least one component may be added or deleted according to the performance of the components of the vehicle illustrated in FIG. 3 . In addition, it will be readily understood by those of ordinary skill in the art that the mutual positions of the components may be changed corresponding to the performance or structure of the system.

Meanwhile, each component shown in FIG. 3 means a hardware component such as software and/or a Field Programmable Gate Array (FPGA) and an Application Specific Integrated Circuit (ASIC).

4 is a circuit diagram of an electronic control device 100 according to an embodiment of the present invention.

Referring to FIG. 4 , FIG. 4 shows some circuits of the electronic control device 100 and the power source 200 . The power source 200 may supply current to the electronic control device 100 through two paths as described above. The power source 200 and the electronic control device 100 may be connected by a wire, and the wire may have a resistance component. In FIG. 4 , the resistance of the wire connected to the first current terminal 101 is indicated by Rb1 , and the resistance of the electric wire connected to the second current terminal 102 is indicated by Rb2 . Rb1 and Rb2 are resistances created by wires. In addition, in FIG. 4, the current flowing through the first current terminal 101 and the second current terminal of the electronic control device 100 is expressed as I1 and I2, respectively.

Meanwhile, the electronic control device 100 may include a first grounding unit 401 and a second grounding unit 402 . The first grounding unit 401 and the second grounding unit 402 may have a reference potential by being connected to the substrate on which the electronic control device 100 is provided. In the circuit shown in FIG. 4, the circuit connected to the first current terminal 101 is connected to the first grounding unit 401 through Rg1, and the circuit connected to the second current terminal is connected to the second grounding unit 402 through Rg2. to form a circuit. In addition, each of the first ground portion 401 and the second ground portion 402 may be connected to the power source 200 including Rg11 and Rg22.

Also, the front ends P1 and P2 of Rg1 and Rg2 may be connected to the short circuit resistor 104 . The short-circuit resistor 104 is a resistance element for determining whether a circuit connected to the ground is short-circuited as described above. According to an embodiment, the short-circuit resistor 104 may have a resistance of 1 mΩ or less. In addition, when I2 according to an embodiment is higher than I1, the potential difference between the first grounding unit 401 and the second grounding unit 402 may be derived by the following equation.

V21 means the potential difference between the points P2 and P1. The electronic control device 100 may be connected to a substrate provided with the electronic control device 100 to form a grounding point. The voltage between the two ground points can be derived by the above equation. In addition, the electronic control device 100 further includes a sensor unit 105 , so that the voltage between the two ground points can be obtained through the sensor unit 105 . In addition, the current flowing through the short-circuit resistor 104 can be derived by the following equation.

Referring to Equation 2, Ish denotes a diagnostic current flowing through the short circuit resistor 104 , and Rsh denotes the short circuit resistor 104 . In addition, the expression located in the numerator of Equation 2 is a value indicating V21 in Equation 1 and is a value indicating the potential difference of the short-circuit resistance. Since the Rsh value is a resistance value set to an arbitrary value desired by the user, the controller (not shown) of the electronic control device 100 may derive Ish based on V21. Also, the control unit may derive the Ish value based on the given resistance value.

Meanwhile, the controller may determine the state when the first grounding unit 401 or the second grounding unit 402 is short-circuited based on the Ish value. For example, when the first ground portion 401 is short-circuited, no current flows through the first current terminal 101 and Rg1 and Rg11, so that the current flows only in the circuit connected to the second current terminal 102, and eventually All currents of the two currents flow through the short circuit resistor. Therefore, the control unit can determine that the grounding part is short-circuited when the following equation is satisfied.

In the above example, the first grounding unit 401 is short-circuited to make the second current equal to the diagnostic current. , when the diagnostic current Ish is equal to the first current or the second current, the controller may determine that the first grounding unit 401 or the second grounding unit 402 is short-circuited.

In addition, if one of the ground parts is short-circuited and all current flows to one current terminal, the electronic control circuit may be operated unreasonably. For example, when the first ground unit 401 connected to I1 is short-circuited, all current generated by the power source 200 goes to the circuit connected to the second current terminal 102 because no current flows through the shorted Rg1 and Rg11. will flow When the current supplied by the power source 200 corresponds to 2A from the beginning, I1 and I2 are driven by corresponding to 1A, respectively, but when the first ground unit 401 is short-circuited, I1 and I2 are combined to form Rg2 and Rg22 A current of 2A can flow through it. In this case, in the circuit driven by I2, when 1A flows and 2A flows, more current flows than the rated current of the circuit. Therefore, the circuit may be overloaded by receiving a current exceeding the rated value. In this case, the control unit may generate a warning signal, and may output a warning message through an output unit of the vehicle as will be described later.

5 is a circuit diagram of an electronic control device 100 for controlling an amount of current according to an embodiment of the present invention.

Referring to FIG. 5 , a case in which the first ground unit 401 is shorted is shown according to an exemplary embodiment. 4 and 5 together, when the first grounding part 401 is short-circuited, all current flows in through the grounding part of the second current terminal 102 and exits to the second grounding part 402, so that the second An overload may be applied to the circuit connected through the current terminal 102 . According to an embodiment, the electronic control circuit may include a dispersion resistor Rt capable of distributing the current in the circuit flowing to the second current terminal 102 .

The distributed resistor is provided around the second grounding part 402 of the circuit driven by the second current terminal 102 to perform a switching operation when at least one of the first grounding part 401 and the second grounding part 402 is short-circuited. It can be used to distribute current. As in the example of FIG. 4 , when the first ground unit 401 is short-circuited, all current supplied from the power source flows to the circuit driven by receiving the current from the second current terminal 102 , that is, Rg2 . At this time, the controller may control the amount of current flowing through Rg2 by connecting Rt. The amount of current (I2') flowing through Rg2 can be derived from the following equation.

Referring to Equation 4, Rt is a distributed resistance value for dispersing the current value as described above, Rg2 is a resistance value of the ground portion of the circuit connected to the second current terminal 102, and I2' is the first It means a current flowing in the circuit connected to the second current terminal 102 when the ground unit 401 is short-circuited. The control unit determines the short-circuit state of the ground unit based on the above-described operation, and when the first ground unit 401 is short-circuited, the second current terminal 102 adjusts the amount of current supplied to the electronic control device 100 and , when the second ground unit 402 is short-circuited, the amount of current supplied by the first current terminal 101 to the electronic control device 100 may be adjusted. In addition, Equation 4 is related to the amount of current when the first grounding unit 401 is short-circuited, but even when the second grounding unit 402 is short-circuited, it can be implemented within the range apparent to those skilled in the art. Of course.

6 illustrates output of a warning message according to an embodiment of the present invention.

Referring to FIG. 6 , when the control unit of the electronic control device determines that the electronic control device cannot operate normally due to a short circuit to the ground based on the above-described operation, a warning message may be output to the output unit 300 provided in the vehicle. have. The output unit 300 provided in the vehicle may be provided as the cluster 30 and the display 121 included in the AVN device 120 . Although it is shown that a warning message is output to the cluster 30 in FIG. 6 , the type of the output unit 300 is not limited as long as the user can detect a malfunction of the electronic control device.

7 is a flowchart according to an embodiment of the present invention.

Referring to FIG. 7 , the control unit of the electronic control device may derive the voltage of the short circuit resistor ( 1001 ). The voltage of the short-circuit resistance may be derived through calculation by the control unit or may be derived through a sensor unit provided in the electronic control device. Based on the derived voltage of the short-circuit resistor, the controller may derive a current flowing through the short-circuit resistor ( 1002 ). According to an embodiment, when the current flowing through the short-circuit resistor is similar to the current flowing through the first current terminal or the second current terminal, the controller may determine that the first or second grounding unit is short-circuited ( 1003 ). When it is determined that the first grounding part or the second grounding part is short-circuited, the control unit of the electronic control device may generate a warning signal and adjust the amount of current ( 1005 ). The warning signal generated by the control unit is transmitted to the output unit provided in the vehicle so that the driver can recognize the error of the electronic control unit. In addition, the control unit may control the amount of current flowing in the circuit connected to the first current terminal and the second current terminal so that the circuit in the electronic control device operates well.

Meanwhile, the disclosed embodiments may be implemented in the form of a recording medium storing instructions executable by a computer. Instructions may be stored in the form of program code, and when executed by a processor, may generate program modules to perform operations of the disclosed embodiments. The recording medium may be implemented as a computer-readable recording medium.

The computer-readable recording medium includes any type of recording medium in which instructions readable by the computer are stored. For example, there may be a read only memory (ROM), a random access memory (RAM), a magnetic tape, a magnetic disk, a flash memory, an optical data storage device, and the like.

The disclosed embodiments have been described with reference to the accompanying drawings as described above. Those of ordinary skill in the art to which the present invention pertains will understand that the present invention may be practiced in other forms than the disclosed embodiments without changing the technical spirit or essential features of the present invention. The disclosed embodiments are illustrative and should not be construed as limiting.

1: vehicle
100: electronic control device
104: short circuit resistance
105: sensor unit
106: control unit

Claims (14)

a first ground unit connected to a power source and connected to a first current terminal for supplying a first current to an electronic control unit (ECU);
a second ground unit connected to the power source and connected to a second current terminal for supplying a second current to the electronic control device;
a short circuit resistor connecting the first ground part and the second ground part; and
and a controller configured to determine whether at least one of the first grounding unit and the second grounding unit is short-circuited based on the magnitude of the diagnostic current flowing through the short-circuit resistance.
According to claim 1,
The control unit is
The magnitude of the diagnostic current flowing through the short circuit resistor is obtained, and the magnitude of the first current and the second current are compared with the magnitude of the diagnostic current to short-circuit at least one of the first and second ground parts. Electronic control device to determine whether or not.
According to claim 1,
The control unit is
obtaining the magnitude of the diagnostic current flowing through the short-circuit resistance;
calculating a difference between the magnitude of the first current or the second current and the magnitude of the diagnosis current;
When the difference is equal to or less than a predetermined value, the electronic control device determines that at least one of the first grounding unit and the second grounding unit is in a short-circuited state.
According to claim 1,
Further comprising; a sensor unit for obtaining a short-circuit voltage between the first and second grounding units,
The control unit is
An electronic control device for calculating the diagnostic current based on the short-circuit voltage.
According to claim 1,
The control unit is
When it is determined that at least one of the first grounding part and the second grounding part is short-circuited,
An electronic control device for reducing the magnitudes of the first current and the second current to predetermined values.
According to claim 1,
The control unit is
When it is determined that at least one of the first grounding part and the second grounding part is short-circuited,
An electronic control unit that generates a warning signal.
It is connected to the power supply to supply the first current to the electronic control unit (ECU),
It is connected to the power supply to supply a second current to the electronic control device,
Short-circuiting at least one of the first grounding part and the second grounding part based on the magnitude of a diagnostic current flowing through a short circuit resistor connecting the first grounding part through which the first current flows and the second grounding part through which the second current flows. Electronic control device control method comprising determining whether or not.
8. The method of claim 7,
Determining whether at least one of the first grounding part and the second grounding part is shorted comprises:
obtaining the magnitude of the diagnostic current flowing through the short-circuit resistance;
and determining whether at least one of the first grounding unit and the second grounding unit is short-circuited by comparing the magnitudes of the first and second currents with the magnitudes of the diagnostic current.
8. The method of claim 7,
Determining whether at least one of the first grounding part and the second grounding part is shorted comprises:
obtaining the magnitude of the diagnostic current flowing through the short-circuit resistance;
calculating a difference between the magnitude of the first current or the second current and the magnitude of the diagnosis current;
When the difference is equal to or less than a predetermined value, the electronic control device control method for determining that at least one of the first grounding part and the second grounding part is in a short circuit state.
8. The method of claim 7,
The first ground part,
connected to the first resistor,
The second ground part,
connected to the second resistor,
Determining whether at least one of the first grounding part and the second grounding part is shorted comprises:
and calculating the diagnostic current based on the first resistance, the second resistance, the first current, and the second current.
8. The method of claim 7,
Further comprising obtaining a short-circuit voltage between the first ground portion and the second ground portion,
Determining whether at least one of the first grounding part and the second grounding part is shorted comprises:
and calculating the diagnostic current based on the short-circuit voltage.
8. The method of claim 7,
When it is determined that at least one of the first grounding part and the second grounding part is short-circuited,
The method further comprising reducing the magnitudes of the first current and the second current to predetermined values.
8. The method of claim 7,
When it is determined that at least one of the first grounding part and the second grounding part is short-circuited,
The method of controlling an electronic control device further comprising generating a warning signal.
power supply that supplies current;
an output unit for outputting an operating state of an electronic control device driven by receiving a first current and a second current from the power source; and
and an electronic control device that is driven by receiving the first current and the second current from the power source, and outputs a warning message to the output unit when at least one part of a circuit constituting the electronic control device is in a short circuit state; and ,
The electronic control device is
a first ground unit connected to the power source and connected to a first current terminal for supplying a first current to the electronic control device;
a second ground unit connected to the power source and connected to a second current terminal for supplying a second current to the electronic control device;
a short circuit resistor connecting the first ground part and the second ground part; and
and a controller configured to determine whether at least one of the first grounding unit and the second grounding unit is short-circuited based on the magnitude of the diagnostic current flowing through the short-circuit resistance.

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