KR101044460B1 - Apparatus for judging driving fault of ramp - Google Patents

Abstract

The present invention discloses an apparatus for determining driving error of a lamp. The apparatus for determining a driving error of a lamp according to the present invention comprises: a first determination for forming and outputting lamp on / off information by determining an input voltage of a power input from an external source and each node of a circuit for turning on / off a lamp; A second determination unit and lamp on / off information for determining an output voltage to an output terminal of a lamp driver for outputting an on / off switching control signal to the lamp, and for forming and outputting a potential difference information between the output voltage and the input voltage. And a controller for determining whether or not a driving error occurs for the lamp based on the potential difference information. Therefore, the present invention, when a failure occurs in the lamp or the lamp driver for driving the lamp, not only can easily determine whether the failure, but also quickly and accurately determine the cause of the failure, thereby maintaining the lamp driving error The time it takes to do so can be significantly shortened.

Lamp, lamp driver, breakdown

Description

Device for determining driving error of lamp {APPARATUS FOR JUDGING DRIVING FAULT OF RAMP}

The present invention relates to a device for determining a driving error of a lamp, and more particularly, when a failure occurs in the lamp or a lamp driver driving the lamp, not only the failure can be easily determined, but also the cause of the failure can be determined. The present invention relates to a driving error determining apparatus for a lamp.

In general, a vehicle is provided with various lamps for indicating the driving state of the vehicle and informing the drivers of other vehicles.

For example, both sides of the rear of the vehicle are provided with a vehicle headlight and a brake light, and when driving at night, the vehicle lights are turned on to inform the driver of another vehicle running behind the vehicle and the vehicle is braked. The brake light is turned on to notify the braking of the vehicle.

In addition, the left and right sides of the front and rear of the vehicle are provided with direction indicators, and when the vehicle is turned left and right, the direction indicators provided on the left and right sides of the vehicle are selectively lit to indicate the driving direction of the vehicle. .

As described above, when an abnormality such as a disconnection occurs in various lamps provided in the vehicle and it is not turned on according to the driving state of the vehicle, the driver of the other vehicle cannot accurately inform the driving state of the vehicle. Various safety accidents such as collision accidents occur.

Therefore, in order to check the state of the various lamps provided in the vehicle, the driver has to operate the predetermined switch to turn on the lamp and then get off the vehicle and visually confirm that there is a problem that gives the driver a lot of inconvenience and hassle. .

Such a conventional lamp lighting system includes a microprocessor for controlling the on / off of the lamp, a lamp driver for switching the lamp by switching the control signal received from the microprocessor, a lamp that is turned on or off according to the output of the lamp driver do.

In such a configuration, when the output line of the lamp driver (that is, the electric circuit line connected to the lamp) is broken, the lamp is turned off and thus the lamp driver is not operated. Therefore, when the manager wants to identify the cause of the failure, there is a problem that it takes a long time to maintain the maintenance of various components of the lamp lighting system.

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to easily determine whether a failure occurs as well as the cause of the failure when a failure occurs in the lamp or the lamp driver driving the lamp. To provide a device for determining the driving error of the lamp to determine the.

Device for determining a driving error of a lamp according to an aspect of the present invention for achieving the above object, the lamp on / off information through the identification of the input voltage of the power input from the outside and the circuit of the circuit for turning on / off the lamp A first judging unit for forming and outputting an output voltage, for determining an output voltage of an output terminal of a lamp driver for outputting an on / off switching control signal to the lamp, and for forming and outputting a potential difference information between the output voltage and the input voltage; And a second determining unit and a controller for determining whether or not a driving error occurs for the lamp based on the lamp on / off information and the potential difference information.

Preferably, the controller maps the lamp on / off information and the potential difference information to a predetermined lamp driving error determination table, and then determines whether a driving error occurs for the lamp through the information of the mapping result. do.

Preferably, when the driving error occurs for the lamp, the control unit is characterized in that it includes information indicating the cause of the driving error in the information of the mapping result.

Preferably, the information indicating the cause of the driving error includes any one of a battery short circuit, a ground short, a circuit disconnection line between the lamp and the lamp driver, the lamp open, and the lamp short. do.

Accordingly, in the present invention, when a failure occurs in the lamp or the lamp driver driving the lamp, not only the failure can be easily determined, but also the cause of the failure can be determined quickly and accurately, thereby maintaining the lamp driving error. This has the advantage of significantly reducing the time it takes to do so.

Hereinafter, a preferred embodiment of the driving error determination apparatus 100 for a lamp according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an apparatus 100 for determining driving error of a lamp according to an exemplary embodiment of the present invention. As shown only as an example in FIG. 1, the driving error determination apparatus 100 of the lamp is based on the basis of discriminating voltage values and current values for various nodes on a circuit for turning on / off the power input from the outside and the lamp. A first determination unit 110 for forming and outputting lamp on / off information, and determining an output voltage of a node formed at an output terminal of a lamp driver for outputting an on / off switching control signal to the lamp, The second determination unit 120 for forming and outputting the potential difference information between the input voltages of the power input from the outside, and whether there is a driving error for the lamp based on the lamp on / off information and the potential difference information; If there is, it includes a control unit 130 for determining and outputting information on what caused the occurrence.

Herein, the controller 130 may provide the mapping result information corresponding to the lamp on / off information and the potential difference information transmitted from the first determination unit 110 and the second determination unit 120 based on the preset lamp driving error determination table. After the extraction, whether or not a driving error has occurred through the information of the extracted mapping result, and if the information corresponding to the cause outputs the notification information.

FIG. 2 is a table illustrating a lamp driving error determination table utilized by the controller 130 shown in FIG. 1. As shown only as an example in FIG. 2, the lamp driving error determination table is the basis data for the controller 130 to determine the driving error of the lamp, and the contents of the table will be described in more detail as follows.

When the lamp driver sends a control signal for controlling the switching on state to the lamp, the first determination unit 110 forms the lamp on / off information by determining the input voltage of the power input from the outside and the node on the circuit. The control unit 130 transmits the second determination unit 120 to the control unit 130.

In this process, the second determination unit 120 refers to a node-specific voltage value and a current value provided from the first determination unit 110, and a node formed at an output terminal of the lamp driver by referring to an input voltage of a power input from the outside. After determining the output voltage, the potential difference information between the input voltage and the output voltage of the power input from the outside is formed, and then transferred to the controller 130.

Accordingly, the controller 130 transmits a control signal of a switched-on state in which the lamp driver not only drives the switched-on state, but also the 'normal state of the lamp' when the potential difference information is a voltage value corresponding to a preset normal state. Check that it is.

In addition, when the lamp driver controls the switching on operation of the lamp and the operation of the lamp is switched off, the controller 130 may determine that the voltage value included in the potential difference information is equal to the magnitude of the input voltage of the power input from the outside. Check if the lamp is abnormal due to battery short circuit.

In addition, when the lamp driver controls the switching-on operation of the lamp and the lamp operates in the switching-on state, but the voltage value included in the potential difference information is 0V and the current value required for the lamp is a ground short, the controller 130 confirms that the lamp is abnormal due to a ground short.

In other cases, the lamp driver controls the switching-on operation of the lamp and thus the lamp operates in the switching-on state, but the voltage value included in the potential difference information is 0V and the current value of the lamp is a circuit break between the lamp and the lamp driver. If the value corresponds to the case, the controller 130 determines that the lamp is abnormal due to disconnection of the circuit connection line of the output terminal of the lamp driver.

In another case, when the lamp driver controls the switching on operation of the lamp and the lamp operates in the switching off state and the voltage value included in the potential difference information is 0 V, the lamp on the circuit is opened (that is, no electrical connection is made or Check if there is a problem with the lamp that causes the lamp socket to come off).

On the other hand, when the lamp driver controls the switching-off operation to the lamp can be determined through the above description, a separate description will be omitted.

3 is a circuit diagram illustrating an example of a circuit connected to the lamp illustrated in FIG. 1. As shown by way of example only in FIG. 3, a circuit diagram around the lamp for operating the switching on / off of the lamp is provided on the cathode side of the diode, the diode which rectifies the external voltage supplied when the lamp driver is operating on switching on. The lamp driver is connected between the output side of R3 and R3 and the output side of the lamp driver which are connected to bias the output voltage of the diode, and are turned on or off by the difference between the output voltage of R3 and the output voltage of the lamp driver and the lamp driver according to the potential of the charging voltage. And a capacitor for charging a potential difference between the both ends of the lamp to determine an electrical error of R1 and R2 connected to the output side of the lamp and the output side of R3, respectively, to bias the output current of the lamp and the output current of R3.

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

In addition, when the failure occurs in the lamp or the lamp driver driving the lamp, the present invention is not only to determine whether the failure, but also to determine the cause of the failure, the possibility of commercial or commercial This is not only sufficient but also practically evident, and thus it is an invention with industrial applicability.

1 is a block diagram of an apparatus for determining driving error of a lamp according to an embodiment of the present invention;

2 is a table illustrating a lamp driving error determination table utilized in the controller shown in FIG. 1;

3 is a circuit diagram illustrating an example of a circuit connected to the lamp illustrated in FIG. 1.

<Description of Symbols for Main Parts of Drawings>

100: driving error determination device of the lamp 110: first determination unit

120: second determination unit 130: control unit

Claims (4)

A first judging unit for forming and outputting lamp on / off information by determining an input voltage of a power input from an external source and a voltage value or a current value of each node of a circuit for turning on / off a lamp; A second determination unit for determining an output voltage of an output terminal of a lamp driver which outputs an on / off switching control signal to the lamp, and for forming and outputting a potential difference information between the output voltage and the input voltage; And And a controller for determining a cause of occurrence of a driving error for the lamp and outputting the determined result based on the lamp on / off information and the potential difference information. The control unit maps the lamp on / off information and the potential difference information to a predetermined lamp driving error determination table, and then determines whether a driving error occurs for the lamp based on the mapping result information. Error judgment device. delete The method of claim 1, wherein the control unit And a driving error for the lamp, wherein the information on the mapping result includes information indicating a cause of the driving error. The method of claim 3, wherein the information indicating the cause of the driving error is And a battery short circuit, a ground short, a circuit disconnection line between the lamp and the lamp driver, the lamp is open, and the lamp short.

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