WO2015167075A1

WO2015167075A1 - Electronic device for vehicle

Info

Publication number: WO2015167075A1
Application number: PCT/KR2014/007063
Authority: WO
Inventors: 원재선
Original assignee: 현대엠엔소프트 주식회사
Priority date: 2014-04-30
Filing date: 2014-07-31
Publication date: 2015-11-05
Also published as: KR20150125795A; KR102156019B1

Abstract

The present invention relates to an electronic device for a vehicle, comprising: a connector for receiving two or more operation information signals from the vehicle so as to output signals of different voltages in response to the respective operation information signals; a voltage detection unit for detecting an output signal voltage of a first output end of the connector; and a control unit for detecting operation information of the vehicle on the basis of the voltage detected by the voltage detection unit so as to store the detected operation information in a memory unit.

Description

Automotive electronics

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle electronic device, and more particularly, to a vehicle electronic device capable of detecting and recording various operation state information of a vehicle without adding a separate signal line or connector in detecting an operation state or operation history of the vehicle. .

In general, a black box mounted on an airplane is a device that stores the operating state of the plane at the moment of an accident, the physical state of the operator, and voice data exchanged between the operators at the moment of an accident in an internal memory. So, if you collect and analyze a black box after an accident, you can trace back the state of the moment.

Similarly, the vehicle black box is a device for obtaining information necessary to determine how the accident occurred when the accident occurred while driving the vehicle. The black box for a vehicle not only records and records various situations occurring while the vehicle is running, but also monitors whether a vehicle burns out through the always recording mode even in a parking state.

In general, a vehicle electronic device such as a black box uses a power connector having two signal lines (battery voltage and ground voltage) in addition to one signal line for determining an operation state of the vehicle. In general, the one signal line is used to determine the state of the accessory power supply, but may also be used to determine whether the brake light is blinking.

However, in a vehicle electronic device such as a conventional black box, only one signal can be input through the signal line using only one signal line as described above. Therefore, it is necessary to determine the use of the accessory power supply or whether the brake or the like is blinking. There was a limitation that could be used for only one of the uses. In addition, in addition to whether the accessory power supply input, whether the brake flashes, etc., it was difficult to expand to grasp whether the left / right lane change alarm flashes or other various vehicle operations.

In order to obtain various vehicle operation state information as described above, an additional signal line or an additional connector must be added, but there is a problem in that such signal line or connector cannot be added arbitrarily in order to meet the standard specification of the power connector. Of course, it is possible to use the existing OBD (on board diagnotics) -II system to obtain the operating state information of the vehicle, but in this case, the system is complicated and the cost is increased because additional systems or devices must be added. there was.

Background art of the present invention is disclosed in Korean Laid-Open Patent Publication No. 2012-0019881 (published on March 7, 2012).

SUMMARY OF THE INVENTION The present invention provides a vehicle electronic device capable of detecting and recording various operating state information of a vehicle without detecting a separate signal line or connector in hardware in detecting the operating state or operation history of the vehicle. To provide.

According to an aspect of the present invention, the present invention comprises a connector for receiving two or more operation information signals from the vehicle, and outputs signals of different voltages corresponding to the respective operation information signals; A voltage sensing unit sensing a voltage of an output signal of the first output terminal of the connector; And a controller configured to detect operation information of the vehicle based on the voltage detected by the voltage detector and store the operation information of the vehicle.

The present invention further includes a reference resistor installed between the first output terminal and the ground terminal of the connector, wherein the voltage sensed by the voltage sensing unit is determined by voltage distribution between the connector and the reference resistor. .

In the present invention, the connector includes two or more resistors each connected to a plurality of input terminals to which the two or more operation information signals are respectively input, wherein the two or more resistors are connected in parallel to the reference resistance and the resistance values are different from each other. It features.

In the present invention, the control unit, when the combined resistance of the two or more resistors included in the connector is the minimum, the voltage of the output signal of the first output terminal of the connector as a reference voltage, the output voltage of the first output terminal and the reference And detecting operation information of the vehicle by a ratio between voltages.

In the present invention, the control unit is characterized in that for detecting the operation information of the vehicle by the ratio between the voltage sensed by the voltage sensing unit and the battery voltage of the vehicle.

In the present invention, the connector further includes a second output terminal for outputting a battery voltage from the vehicle, and a third output terminal for outputting a ground voltage from the vehicle, wherein the vehicle electronics device is connected to the second output terminal; And a second resistor connected between the first resistor and the third output terminal, wherein the controller is configured to adjust the battery voltage of the vehicle by the voltage divided by the first resistor and the second resistor. It is characterized by judging.

In the present invention, the two or more operation information signals are characterized in that it comprises at least a vehicle accessory voltage signal, a brake light flashing information signal, a lane change alarm signal.

The voltage sensing unit may be an analog-digital converter for digitally converting a voltage of an output signal of the first output terminal and outputting the digital signal to the controller.

In the present invention, the vehicle electronic device is a vehicle black box for recording the image information including the driving state of the vehicle and various operation information of the vehicle.

The present invention converts the operation information signal into a battery voltage or an open state voltage and provides it to the connector when two or more operation information signals inputted from the vehicle are input to the battery voltage or the ground voltage according to whether each signal is activated. Characterized in that it further comprises a signal conversion unit.

The electronic device for a vehicle according to the present invention uses a voltage distribution action by a plurality of resistors having different resistance values without adding a separate signal line or connector in hardware in detecting an operation state or operation history of the vehicle. Status information can be detected and recorded, respectively, so that the operation history of the vehicle can be accurately grasped in case of an accident in the future.

An electronic device for a vehicle according to the present invention has an advantage in that it can be implemented by simply adding a resistor and performing software processing without additionally installing an expensive separate analyzer.

1 is a block diagram illustrating a configuration of an electronic device for a vehicle according to an exemplary embodiment of the present disclosure.

2 shows the configuration of the connector included in this embodiment.

FIG. 3A is a table illustrating various ratio information including a voltage sensed by a voltage sensing unit according to each operation information signal input from a vehicle in this embodiment.

3B is a graph illustrating a transition of the voltage detected by the voltage detector according to each operation information signal input from the vehicle.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted for simplicity of explanation, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, not to exclude other components, unless specifically stated otherwise.

1 is a block diagram showing a configuration of an electronic device for a vehicle according to an embodiment of the present invention, FIG. 2 is a diagram showing a configuration of a connector included in the present embodiment, and FIG. 3A is input from a vehicle in this embodiment. Table showing various ratio information including the voltage detected by the voltage sensing unit according to each operation information signal, Figure 3b is a graph showing the transition of the voltage detected by the voltage sensing unit according to each operation information signal input from the vehicle, Referring to this, a vehicle electronic device according to the present embodiment will be described.

In the present embodiment, the vehicle electronic device 100 may be a vehicle black box for recording image information including the driving state of the vehicle and various operation information of the vehicle. However, the vehicle electronic device 100 of the present embodiment may be stored in the black box. The present invention is not limited thereto, and is used as a concept including all kinds of electronic devices capable of detecting various state information of a vehicle.

As shown in FIG. 1, the vehicle electronic apparatus 100 according to the present exemplary embodiment receives a plurality of operation information signals B, S, and A from a vehicle, and outputs the operation information signals B, S, and A, respectively. Connectors 150 for outputting signals of different voltages in correspondence with each other; A voltage sensing unit 130 sensing a voltage Va of the output signal of the first output terminal OUT1 of the connector 150; And a controller 110 that detects operation information of the vehicle based on the voltage Va sensed by the voltage detector 130 and stores the operation information of the vehicle in the memory 120. Here, the signal (B) is a brake light blinking information signal, the signal (S) is a lane change alarm signal, the signal (A) is an accessory voltage signal of the vehicle, and other various types of vehicle operation information signals may be extended. Can be.

As shown in FIG. 2, the connector 150 includes a plurality of resistors R1, R2, and R3 respectively connected to a plurality of input terminals to which the plurality of operation information signals B, S, and A are respectively input. . The plurality of resistors R1, R2, and R3 are connected in parallel to the reference resistor Ra, and their resistance values are applied to different values. The voltage sensed by the voltage sensing unit 130 is determined by the voltage distribution between the connector 150 and the reference resistor Ra.

The connector 150 further includes a second output terminal OUT2 for outputting the battery voltage VCC from the vehicle, and a third output terminal OUT3 for outputting the ground voltage GND from the vehicle. The vehicle electronic device 100 further includes a first resistor Rc connected to the second output terminal OUT2 and a second resistor Rb connected between the first resistor Rc and the third output terminal OUT3. It may include. The controller 110 may determine the battery voltage VCC of the vehicle based on the voltage divided by the first resistor Rc and the second resistor Rb.

In the present exemplary embodiment, an analog-digital converter for digitally converting the voltage Va of the output signal of the first output terminal OUT1 and outputting the converted voltage to the controller 110 may be employed. Various types of voltage sensing devices capable of detecting and providing the sensing information may be applied.

The operation and operation of this embodiment configured as described above will be described in detail with reference to FIGS. 1 to 3B.

The vehicle electronic device 100 according to the present exemplary embodiment receives operation information signals B, S, and A relating to each operation state of the vehicle from the fuse box 200 of the vehicle through the connector 150, and together with the battery of the vehicle. The voltage VCC and the ground voltage GND are also input.

Here, the three operation information signals B, S, and A are applied as examples of the vehicle operation information signals, and only two of them may be used, or more may be used. The signal B is a brake light blinking information signal, the signal S is a lane change alarm signal, the signal A is an accessory voltage signal of the vehicle, and these signals are an embodiment of the operation information signal indicating the state information of the vehicle. It is to be understood that the present invention can be extended to other various types of vehicle operation information signals without being limited thereto.

In addition, the fuse box 200 of the vehicle has been cited as an example of a signal provider for providing the various operation information signals B, S, and A, and may provide the operation information signals B, S, and A. It may be another type of module or device.

Typically, these operation information signals have the same voltage value as the battery voltage VCC of the vehicle, and may have different voltage values depending on the embodiment. In the present embodiment, it is assumed that the operation information signals B, S and A have a voltage value of 14 [V] equal to the battery voltage VCC of the vehicle.

The battery voltage VCC, the operation information signals B, S, and A, and the ground voltage GND input as described above are used to connect the first to third output terminals OUT1 to OUT3 of the connector 150 shown in FIG. 2. It is transmitted to each component of the vehicle electronic device 100 through. The battery voltage VCC of the vehicle is transmitted to the power supply unit 140 through the connector 150 to be used as a power source for each component in the vehicle electronic device 100, and the operation information signals B, S, and A are respectively resistances ( It is output to the first output terminal OUT1 through R1), resistor R2, and resistor R3. The ground voltage GND is output through the third output terminal OUT3.

Here, the resistor R1, the resistor R2, and the resistor R3 have different voltage values of the voltage Va of the first output terminal OUT1 due to voltage division with the reference resistor Ra, which will be described later. In order to have a different resistance value, it is connected in parallel with the reference resistance (Ra). That is, when the resistance values of the resistors R1, R2, and R3 connected to the same reference resistor Ra are different from each other, the voltage is determined depending on whether the respective operation information signals B, S, and A are activated. The voltage Va of the first output terminal OUT1 to be distributed uses properties that vary. In this embodiment, as shown in Fig. 3A, a resistance of 1.2 [kW] is used as the reference resistance Ra, and 18 [kW] and 9 [kW are used as the resistors R1, R2, and R3. ] And 33 [Ω], respectively, and of course, different resistance values can be used depending on the intention of the system designer.

Subsequently, the voltage detector 130 detects the voltage Va of the signal output to the first output terminal OUT1 of the connector 150 and transmits the detected voltage Va to the controller 110.

In addition, the controller 110 may determine which operation information signal is input based on the voltage Va sensed by the voltage detection unit 130, and may also identify which operation is performed in the vehicle correspondingly. The information is stored in the memory unit 120.

As described above, since the resistors R1, R2, and R3 have different resistance values, even if the operation information signals B, S, and A are input at the same voltage, which operation information signals are input. The value of the voltage Va sensed by the voltage sensing unit 130 varies depending on whether or not is input. For example, when only the accessory power signal A is input as shown in FIGS. 3A and 3B, the value of the voltage Va divided by the resistor R3 and the reference resistor Ra is represented by Equation 1 below. It becomes 0.49 [V] as follows.

Equation 1

3A and 3B, when the brake lamp blinking information signal B and the lane change alarm signal S are input at the same time, the combined resistance of the resistors R1 and R2 and the reference resistor are simultaneously input. The value of the voltage Va divided by the voltage Ra is 2.33 [V] as shown in Equation 2 below.

Equation 2

For reference, in the table of FIG. 3A, when the resistance value is displayed as 100000000 [Ω], it means that the signal is open because no signal is input to the resistor.

As such, the controller 110 may determine which operation information signal is input based on the voltage Va sensed by the voltage detector 130. In particular, the controller 110 may be connected to the voltage detector 130. The operation information of the vehicle may be detected by a ratio between the voltage Va sensed by the battery voltage and the battery voltage VCC of the vehicle.

In general, although the rated voltage of the battery voltage VCC is determined in the vehicle, the voltage value of the battery voltage VCC and the operation information signals B, S, and A obtained therefrom is determined by the vehicle starting on / off state or It may vary depending on the operating state of the generator. However, despite the change in the battery voltage VCC, the ratio between the sensing voltage Va and the battery voltage VCC is kept constant. Therefore, in consideration of the case where the absolute value of the voltage Va sensed by the voltage sensing unit 130 is changed, the sensing voltage Va and the battery voltage VCC as shown in FIG. 3A for more accurate information detection. The operation information of the vehicle can be detected depending on the ratio of the liver. That is, as illustrated in FIG. 3A, when the ratio between the sensing voltage Va and the battery voltage VCC is 0.06, it may be detected that the brake lamp is blinking.

In addition, the controller 110 refers to a voltage when the combined resistance of the resistor R1, the resistor R2, and the resistor R2 is the minimum, as a reference voltage, and the sensing voltage Va and the reference voltage as shown in FIG. 3A. The operation information of the vehicle may be detected depending on the ratio between the voltages ("output ratio" in FIG. 3A). That is, as illustrated in FIG. 3A, when the ratio between the sensing voltage Va and the reference voltage is 0.76, the lane change alarm may blink and the accessory power may be detected.

Therefore, the controller 110 monitors the ratio between the sensing voltage Va and the battery voltage VCC or the ratio between the sensing voltage Va and the reference voltage, thereby accurately operating the vehicle even when the battery voltage VCC is changed. Information can be detected.

As such, the controller 110 may check which operation information signal is input based on the voltage Va sensed by the voltage detector 130 to determine which operation is performed in the vehicle. This information is stored in the memory unit 120 to check the history stored in the memory unit 120 in the event of an accident or the like in the future so that it is possible to check what operation was performed while driving.

For example, in the past, even if a sudden accident occurred in a vehicle, the situation could not be recorded, so it was difficult to prove whether the sudden acceleration occurred later. However, according to the present exemplary embodiment, if the user presses the brake in a situation in which the sudden start occurs, the vehicle electronic device 100 records in the memory unit 120 that the brake lamp blinking information signal B has been input to determine whether the sudden start occurs later. Make sure that

In addition, when a contact accident occurs in connection with changing the direction of the vehicle while driving, by checking the input history of the lane change alarm signal (S) recorded in the electronic device 100 for a vehicle according to the present embodiment, You can check the driver's compliance with the driving rules.

Meanwhile, the connector 150 may include a second output terminal OUT2 for outputting the battery voltage VCC from the vehicle, and a third output terminal OUT3 for outputting the ground voltage GND from the vehicle. The electronic device 100 may include a first resistor Rc connected to the second output terminal OUT2 and a second resistor Rb connected between the first resistor Rc and the third output terminal OUT3. have. The voltage detector 130 detects and provides a voltage Vb divided by the first resistor Rc and the second resistor Rb to the controller 110, and the controller 110 controls the vehicle by the voltage. The battery voltage VCC can be calculated.

In the present exemplary embodiment, as the voltage sensing unit 130, an analog-digital converter for digitally converting the voltage Va of the output signal of the first output terminal OUT1 and outputting the converted voltage to the controller 110 may be employed. Various types of voltage sensing devices capable of detecting and providing the sensing information may be applied.

Meanwhile, in the above-described embodiment, a case in which a signal input from the fuse box 200 of the vehicle or the like is input as a battery voltage or an open state voltage according to whether each signal is activated is described as an example. Therefore, each signal may be input as a battery voltage or a ground voltage depending on whether the signal is input. Therefore, for this case, the vehicle electronic device 100 according to the present embodiment has a separate signal conversion unit (not shown) between the fuse box 200 and the connector 150 of the vehicle, that is, at the front end of the connector 150. It may further include. The signal converting unit (not shown) is a device for converting the signal input from the fuse box 200 of the vehicle, such as the battery voltage or the ground voltage according to whether the input of each signal to a battery voltage or an open state voltage. .

As described above, the on-vehicle electronic device according to the present embodiment has a voltage distribution action by a plurality of resistors having different resistance values without adding a separate signal line or connector in hardware in detecting the operation state or operation history of the vehicle. Various operating state information of the vehicle may be detected and recorded using the above, and thus, the user may accurately grasp the operation history of the vehicle in case of an accident such as a later occurrence. In addition, the electronic device for a vehicle according to the present embodiment may be implemented by simply adding a resistor and performing software processing without additionally installing an expensive separate analyzer.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

Claims

A connector that receives two or more operation information signals from a vehicle and outputs signals having different voltages corresponding to the operation information signals;

A voltage sensing unit sensing a voltage of an output signal of the first output terminal of the connector; And

And a controller configured to detect operation information of the vehicle based on the voltage sensed by the voltage detector and store the operation information of the vehicle.
The method of claim 1,

Further comprising a reference resistor is installed between the first output terminal and the ground terminal of the connector,

The voltage sensed by the voltage sensing unit is determined by the voltage distribution between the connector and the reference resistor.
The method of claim 2,

The connector includes two or more resistors each connected to a plurality of input terminals to which the two or more operation information signals are respectively input.

And the two or more resistors are connected in parallel with the reference resistor and have different resistance values.
The method of claim 3, wherein

The controller may be configured to provide a reference voltage based on a voltage of an output signal of the first output terminal of the connector when the combined resistance of two or more resistors included in the connector is minimum, and to determine a ratio between the output voltage of the first output terminal and the reference voltage. And detecting operation information of the vehicle.
The method of claim 1,

And the controller detects operation information of the vehicle by a ratio between the voltage sensed by the voltage detector and the battery voltage of the vehicle.
The method of claim 5,

The connector further includes a second output terminal for outputting a battery voltage from the vehicle, and a third output terminal for outputting a ground voltage from the vehicle,

The vehicle electronic device further includes a first resistor connected to the second output terminal, and a second resistor connected between the first resistor and the third output terminal,

And the control unit determines the battery voltage of the vehicle based on the voltage divided by the first and second resistors.
The method of claim 1,

The at least two operation information signals include at least a vehicle accessory voltage signal, a brake light blinking information signal, and a lane change alarm signal.
The method of claim 1,

And the voltage sensing unit is an analog-digital converter for digitally converting a voltage of an output signal of the first output terminal and outputting the converted voltage to the controller.
The method of claim 1,

The vehicle electronic device is a vehicle electronic box, characterized in that the vehicle black box for recording the image information including the driving state of the vehicle and the various operation information of the vehicle.
The method of claim 1,

When two or more operation information signals input from the vehicle are input as battery voltage or ground voltage according to whether each signal is activated, a signal conversion for converting the operation information signal into a battery voltage or an open state voltage and providing the same to the connector. Vehicle electronic device further comprises a wealth.